diff --git a/appveyor.yml b/.appveyor/config.yml
similarity index 95%
rename from appveyor.yml
rename to .appveyor/config.yml
index c41066d86eca60..85b77e9664a251 100644
--- a/appveyor.yml
+++ b/.appveyor/config.yml
@@ -1,8 +1,8 @@
 environment:
     ANDROID_HOME: "C:\\android-sdk-windows"
     ANDROID_NDK: "C:\\android-sdk-windows\\android-ndk-r17c"
-    ANDROID_BUILD_VERSION: 27
-    ANDROID_TOOLS_VERSION: 27.0.3
+    ANDROID_BUILD_VERSION: 28
+    ANDROID_TOOLS_VERSION: 28.0.3
 
     GRADLE_OPTS: -Dorg.gradle.daemon=false
 
diff --git a/.buckconfig b/.buckconfig
index 18bc1909ec0766..de7e1f2e3895c1 100644
--- a/.buckconfig
+++ b/.buckconfig
@@ -7,7 +7,7 @@
 
 [maven_repositories]
   central = https://repo1.maven.org/maven2
-  google = https://maven.google.com
+  google = https://dl.google.com/dl/android/maven2/
 
 [alias]
   rntester = //RNTester/android/app:app
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 65770d6a99a83f..ab5385eecfd72d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ aliases:
   - &restore-yarn-cache
     keys:
       - v1-yarn-cache-{{ arch }}-{{ checksum "package.json" }}
-      - v1-yarn-cache-{{ arch }}
+      - v1-yarn-cache-{{ arch }}-fixed
   - &save-yarn-cache
     paths:
       - ~/.cache/yarn
@@ -36,16 +36,14 @@ aliases:
 
   - &restore-cache-gradle
     keys:
-      - v1-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-{{ checksum "ReactAndroid/build.gradle" }}
+      - v2-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-{{ checksum "ReactAndroid/build.gradle" }}
       # Fallback in case checksum fails
-      - v1-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-
-      - v1-gradle-{{ .Branch }}-
-      # Fallback in case this is a first-time run on a fork
-      - v1-gradle-master-
+      - v2-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-
+      - v2-gradle-{{ .Branch }}-fixed
   - &save-cache-gradle
     paths:
       - ~/.gradle
-    key: v1-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-{{ checksum "ReactAndroid/build.gradle" }}
+    key: v2-gradle-{{ .Branch }}-{{ checksum "build.gradle" }}-{{ checksum "ReactAndroid/build.gradle" }}
 
   - &restore-cache-ndk
     keys:
@@ -57,13 +55,13 @@ aliases:
 
   - &restore-cache-downloads-buck
     keys:
-      - v3-buck-v2018.07.23.01-{{ checksum "scripts/circleci/buck_fetch.sh" }}}
-      - v3-buck-v2018.07.23.01-
+      - v3-buck-v2018.10.29.01-{{ checksum "scripts/circleci/buck_fetch.sh" }}}
+      - v3-buck-v2018.10.29.01-fixed
   - &save-cache-downloads-buck
     paths:
       - ~/buck
       - ~/okbuck
-    key: v3-buck-v2018.07.23.01-{{ checksum "scripts/circleci/buck_fetch.sh" }}
+    key: v3-buck-v2018.10.29.01-{{ checksum "scripts/circleci/buck_fetch.sh" }}
 
   - &restore-cache-watchman
     keys:
@@ -75,14 +73,22 @@ aliases:
 
   - &restore-cache-downloads-gradle
     keys:
-      - v1-gradle-{{ checksum "ReactAndroid/build.gradle" }}-{{ checksum "scripts/circleci/gradle_download_deps.sh" }}
-      - v1-gradle-
+      - v2-gradle-{{ checksum "ReactAndroid/build.gradle" }}-{{ checksum "scripts/circleci/gradle_download_deps.sh" }}
+      - v2-gradle-fixed
   - &save-cache-downloads-gradle
     paths:
       - ~/.gradle
       - ReactAndroid/build/downloads
       - ReactAndroid/build/third-party-ndk
-    key: v1-gradle-{{ checksum "ReactAndroid/build.gradle" }}-{{ checksum "scripts/circleci/gradle_download_deps.sh" }}
+    key: v2-gradle-{{ checksum "ReactAndroid/build.gradle" }}-{{ checksum "scripts/circleci/gradle_download_deps.sh" }}
+
+  - &restore-cache-homebrew
+    keys:
+      - v1-homebrew-fixed
+  - &save-cache-homebrew
+    paths:
+      - /usr/local/Homebrew
+    key: v1-homebrew
 
   # Branch Filtering
   - &filter-only-master-stable
@@ -132,7 +138,7 @@ aliases:
     name: Install BUCK
     command: |
       if [[ ! -e ~/buck ]]; then
-        git clone https://github.com/facebook/buck.git ~/buck --branch v2018.07.23.01 --depth=1
+        git clone https://github.com/facebook/buck.git ~/buck --branch v2018.10.29.01 --depth=1
       fi
       cd ~/buck && ant
       buck --version
@@ -185,15 +191,19 @@ aliases:
     name: Lint code
     command: scripts/circleci/exec_swallow_error.sh yarn lint --format junit -o ~/react-native/reports/junit/eslint/results.xml
 
-  - &run-flow-checks
-    name: Check for errors in code using Flow
-    command: yarn flow check
+  - &run-flow-checks-ios
+    name: Check for errors in code using Flow (iOS)
+    command: yarn flow-check-ios
+
+  - &run-flow-checks-android
+    name: Check for errors in code using Flow (Android)
+    command: yarn flow-check-android
 
   - &run-sanity-checks
     name: Sanity checks
     command: |
       ./scripts/circleci/check_license.sh
-      ./scripts/circleci/check_cache.sh
+      ./scripts/circleci/validate_yarn_lockfile.sh
     when: always
 
   - &download-dependencies-gradle
@@ -229,7 +239,7 @@ aliases:
 
   - &compile-native-libs
     name: Compile Native Libs for Unit and Integration Tests
-    command: ./gradlew :ReactAndroid:packageReactNdkLibsForBuck -Pjobs=$BUILD_THREADS -Pcom.android.build.threadPoolSize=1
+    command: ./gradlew :ReactAndroid:packageReactNdkLibsForBuck -Pjobs=$BUILD_THREADS
     no_output_timeout: 6m
 
   - &run-android-unit-tests
@@ -273,20 +283,12 @@ aliases:
 
   - &boot-simulator-iphone
     name: Boot iPhone Simulator
-    command: xcrun simctl boot "iPhone 5s" || true
-
-  - &boot-simulator-appletv
-    name: Boot Apple TV Simulator
-    command: xcrun simctl boot "Apple TV" || true
+    command: source scripts/.tests.env && xcrun simctl boot "$IOS_DEVICE" || true
 
   - &run-objc-ios-tests
     name: iOS Test Suite
     command: ./scripts/objc-test-ios.sh test
 
-  - &run-objc-tvos-tests
-    name: tvOS Test Suite
-    command: ./scripts/objc-test-tvos.sh test
-
   - &display-broken-tests-warning
     name: Running broken tests (Ignore any failures past this point)
     command: |
@@ -300,16 +302,12 @@ aliases:
 
   - &run-e2e-tests
     name: End-to-End Test Suite (Disabled)
-    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --ios --tvos --js --retries 3;
+    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --ios --js --retries 3;
 
   - &run-objc-ios-e2e-tests
     name: iOS End-to-End Test Suite (Disabled)
     command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --ios --retries 3;
 
-  - &run-objc-tvos-e2e-tests
-    name: tvOS End-to-End Test Suite (Disabled)
-    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --tvos --js --retries 3;
-
   - &run-android-e2e-tests
     name: Android End-to-End Test Suite (Disabled)
     command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --retries 3;
@@ -346,7 +344,7 @@ android_defaults: &android_defaults
 macos_defaults: &macos_defaults
   <<: *defaults
   macos:
-    xcode: "9.4.0"
+    xcode: "10.1.0"
 
 version: 2
 jobs:
@@ -377,7 +375,8 @@ jobs:
           at: ~/react-native
 
       - run: *run-lint-checks
-      - run: *run-flow-checks
+      - run: *run-flow-checks-ios
+      - run: *run-flow-checks-android
 
       - store_test_results:
           path: ~/react-native/reports/junit
@@ -411,25 +410,19 @@ jobs:
       - store_test_results:
           path: ~/react-native/reports/junit
 
-  # Runs unit tests on iOS and Apple TV devices
-  test_objc:
+  # Runs unit tests on iOS devices
+  test_ios:
     <<: *macos_defaults
     steps:
       - attach_workspace:
           at: ~/react-native
 
       - run: *boot-simulator-iphone
-      - run: *boot-simulator-appletv
-      - run: *brew-install-watchman
 
+      - restore-cache: *restore-cache-homebrew
+      - run: *brew-install-watchman
+      - save-cache: *save-cache-homebrew
       - run: *run-objc-ios-tests
-      - run: *run-objc-tvos-tests
-
-      # TODO: Fix these failing tests.
-      - run: *display-broken-tests-warning
-      - run: *run-podspec-tests
-      - run: *run-objc-ios-e2e-tests
-      - run: *run-objc-tvos-e2e-tests
 
       - store_test_results:
           path: ~/react-native/reports/junit
@@ -538,12 +531,18 @@ jobs:
   # Analyze pull request and raise any lint/flow issues.
   # Issues will be posted to the PR itself via GitHub bots.
   # This workflow should only fail if the bots fail to run.
+  # The public github tokens are publicly visible by design
   analyze_pr:
     <<: *defaults
     docker:
       - image: circleci/node:10
     environment:
       - PATH: "/opt/yarn/yarn-v1.5.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+      - PUBLIC_PULLBOT_GITHUB_TOKEN_A: "a6edf8e8d40ce4e8b11a"
+      - PUBLIC_PULLBOT_GITHUB_TOKEN_B: "150e1341f4dd9c944d2a"
+      - PUBLIC_ANALYSISBOT_GITHUB_TOKEN_A: "78a72af35445ca3f8180"
+      - PUBLIC_ANALYSISBOT_GITHUB_TOKEN_B: "b1a98e0bbd56ff1ccba1"
+
     steps:
       - checkout
       - run: *setup-artifacts
@@ -552,29 +551,41 @@ jobs:
       - run: *yarn
 
       - run:
-          name: Analyze Code
+          name: Analyze Shell Scripts
           command: |
-            # GITHUB_TOKEN=eslint-bot public_repo access token
-            if [ -n "$CIRCLE_PR_NUMBER" ]; then
-              echo -e "\\x1B[36mInstalling additional dependencies\\x1B[0m"; yarn add @octokit/rest@15.10.0
-              echo -e "\\x1B[36mAnalyzing code\\x1B[0m"; GITHUB_TOKEN="af6ef0d15709bc91d""06a6217a5a826a226fb57b7" ./scripts/circleci/analyze_code.sh
-            else
-              echo "Skipping code analysis."
-            fi
+            echo -e "\\x1B[36mInstalling additional dependencies\\x1B[0m"
+            sudo apt-get install -y shellcheck
+            yarn add @octokit/rest@15.10.0
+            echo -e "\\x1B[36mAnalyzing shell scripts\\x1B[0m"; \
+            GITHUB_TOKEN="$PUBLIC_ANALYSISBOT_GITHUB_TOKEN_A""$PUBLIC_ANALYSISBOT_GITHUB_TOKEN_B" \
+            GITHUB_OWNER="$CIRCLE_PROJECT_USERNAME" \
+            GITHUB_REPO="$CIRCLE_PROJECT_REPONAME" \
+            GITHUB_PR_NUMBER="$CIRCLE_PR_NUMBER" \
+            ./scripts/circleci/analyze_scripts.sh
           when: always
 
       - restore-cache: *restore-cache-analysis
+      - run:
+          name: Analyze Code
+          command: |
+            echo -e "\\x1B[36mInstalling additional dependencies\\x1B[0m"; yarn add @octokit/rest@15.10.0
+            echo -e "\\x1B[36mAnalyzing code\\x1B[0m"; \
+            GITHUB_TOKEN="$PUBLIC_ANALYSISBOT_GITHUB_TOKEN_A""$PUBLIC_ANALYSISBOT_GITHUB_TOKEN_B" \
+            GITHUB_OWNER="$CIRCLE_PROJECT_USERNAME" \
+            GITHUB_REPO="$CIRCLE_PROJECT_REPONAME" \
+            GITHUB_PR_NUMBER="$CIRCLE_PR_NUMBER" \
+            ./scripts/circleci/analyze_code.sh
+          when: always
+
       - run:
           name: Analyze Pull Request
           command: |
-            # DANGER_GITHUB_API_TOKEN=React-Linter public_repo access token
-            if [ -n "$CIRCLE_PR_NUMBER" ]; then
-              cd bots
-              yarn install --non-interactive --cache-folder ~/.cache/yarn
-              DANGER_GITHUB_API_TOKEN="80aa64c50f38a267e9ba""575d41d528f9c234edb8" yarn danger
-            else
-              echo "Skipping pull request analysis."
-            fi
+            echo -e "\\x1B[36mInstalling additional dependencies\\x1B[0m"
+            cd bots
+            yarn install --non-interactive --cache-folder ~/.cache/yarn
+            echo -e "\\x1B[36mAnalyzing pull request\\x1B[0m"; \
+            DANGER_GITHUB_API_TOKEN="$PUBLIC_PULLBOT_GITHUB_TOKEN_A""$PUBLIC_PULLBOT_GITHUB_TOKEN_B" \
+            yarn danger
           when: always
       - save-cache: *save-cache-analysis
 
@@ -659,8 +670,8 @@ workflows:
           requires:
             - checkout_code
 
-      # Test iOS & tvOS
-      - test_objc:
+      # Test iOS
+      - test_ios:
           filters: *filter-ignore-gh-pages
           requires:
             - checkout_code
@@ -670,15 +681,22 @@ workflows:
           requires:
             - checkout_code
 
+      # Tooling Compatibility Checks
+      - test_node10:
+          filters: *filter-ignore-gh-pages
+
       # Only runs on vX.X.X tags if all tests are green
       - publish_npm_package:
           filters:
+            # ignore any commit on any branch by default
             branches:
-              only:
-                - /.*-stable/
+              ignore: /.*/
+            # only act on version tags
             tags:
               only: /v[0-9]+(\.[0-9]+)*(\-rc(\.[0-9]+)?)?/
 
-      # Run code checks
+      # Run code checks on PRs from forks
       - analyze_pr:
-          filters: *filter-ignore-master-stable
+          filters:
+            branches:
+              only: /^pull\/.*$/
diff --git a/.editorconfig b/.editorconfig
index 4cde30709106fc..dadac3a2b6d50b 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -12,3 +12,6 @@ indent_size = 2
 
 [*.gradle]
 indent_size = 4
+
+[BUCK]
+indent_size = 4
diff --git a/.eslintrc b/.eslintrc
index 01842b1bcd0e5f..983395c9806b15 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -65,6 +65,7 @@
     "no-constant-condition": 0,      // disallow use of constant expressions in conditions
     "no-control-regex": 1,           // disallow control characters in regular expressions
     "no-debugger": 1,                // disallow use of debugger
+    "no-dupe-class-members": 2,      // Disallow duplicate name in class members
     "no-dupe-keys": 2,               // disallow duplicate keys when creating object literals
     "no-empty": 0,                   // disallow empty statements
     "no-ex-assign": 1,               // disallow assigning to the exception in a catch block
diff --git a/.flowconfig b/.flowconfig
index 5318fc23f4bfcd..90fe54c3f4b959 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -63,6 +63,7 @@ module.system.haste.paths.blacklist=.*/__mocks__/.*
 module.system.haste.paths.whitelist=<PROJECT_ROOT>/Libraries/.*
 module.system.haste.paths.whitelist=<PROJECT_ROOT>/RNTester/.*
 module.system.haste.paths.whitelist=<PROJECT_ROOT>/IntegrationTests/.*
+module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/react-native/react-native-implementation.js
 module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/Animated/src/polyfills/.*
 
 munge_underscores=true
@@ -75,8 +76,8 @@ suppress_type=$FlowFixMe
 suppress_type=$FlowFixMeProps
 suppress_type=$FlowFixMeState
 
-suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*[react_native\\(_ios\\)?_oss|react_native\\(_ios\\)?_fb][a-z,_]*\\)?)\\)
-suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*[react_native\\(_ios\\)?_oss|react_native\\(_ios\\)?_fb][a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
 suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
 suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
 
@@ -105,4 +106,7 @@ untyped-import
 untyped-type-import
 
 [version]
-^0.78.0
+^0.86.0
+
+[untyped]
+.*/node_modules/metro/.*
diff --git a/.flowconfig.android b/.flowconfig.android
new file mode 100644
index 00000000000000..49de66e3b9fa40
--- /dev/null
+++ b/.flowconfig.android
@@ -0,0 +1,104 @@
+[ignore]
+; We fork some components by platform
+.*/*[.]ios.js
+
+; Ignore templates for 'react-native init'
+.*/local-cli/templates/.*
+
+; Ignore the Dangerfile
+<PROJECT_ROOT>/bots/dangerfile.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; Ignore unexpected extra "@providesModule"
+.*/node_modules/.*/node_modules/fbjs/.*
+
+; Ignore duplicate module providers
+; For RN Apps installed via npm, "Libraries" folder is inside
+; "node_modules/react-native" but in the source repo it is in the root
+.*/Libraries/react-native/React.js
+
+; Ignore polyfills
+.*/Libraries/polyfills/.*
+
+; These should not be required directly
+; require from fbjs/lib instead: require('fbjs/lib/invariant')
+.*/node_modules/invariant/.*
+.*/node_modules/warning/.*
+
+[include]
+
+[libs]
+Libraries/react-native/react-native-interface.js
+flow/
+flow-github/
+
+[options]
+emoji=true
+
+esproposal.optional_chaining=enable
+esproposal.nullish_coalescing=enable
+
+module.system=haste
+module.system.haste.use_name_reducers=true
+# keep the following in sync with server/haste/hasteImpl.js
+# get basename
+module.system.haste.name_reducers='^.*/\([a-zA-Z0-9$_.-]+\.js\(\.flow\)?\)$' -> '\1'
+# strip .js or .js.flow suffix
+module.system.haste.name_reducers='^\(.*\)\.js\(\.flow\)?$' -> '\1'
+# strip .android suffix
+module.system.haste.name_reducers='^\(.*\)\.android$' -> '\1'
+module.system.haste.name_reducers='^\(.*\)\.ios$' -> '\1'
+module.system.haste.name_reducers='^\(.*\)\.native$' -> '\1'
+module.system.haste.paths.blacklist=.*/__tests__/.*
+module.system.haste.paths.blacklist=.*/__mocks__/.*
+module.system.haste.paths.whitelist=<PROJECT_ROOT>/Libraries/.*
+module.system.haste.paths.whitelist=<PROJECT_ROOT>/RNTester/.*
+module.system.haste.paths.whitelist=<PROJECT_ROOT>/IntegrationTests/.*
+module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/react-native/react-native-implementation.js
+module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/Animated/src/polyfills/.*
+
+munge_underscores=true
+
+module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FlowFixMeProps
+suppress_type=$FlowFixMeState
+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_android\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_android\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
+
+[lints]
+all=warn
+unnecessary-optional-chain=off
+
+# There is an ESLint rule for this
+unclear-type=off
+
+sketchy-null=off
+sketchy-null-number=warn
+sketchy-null-mixed=warn
+
+# This is noisy for now. We *do* still want to warn on importing types
+# from untyped files, which is covered by untyped-type-import
+untyped-import=off
+
+[strict]
+deprecated-type
+nonstrict-import
+sketchy-null
+unclear-type
+unsafe-getters-setters
+untyped-import
+untyped-type-import
+
+[version]
+^0.86.0
+
+[untyped]
+.*/node_modules/metro/.*
diff --git a/.github/ISSUE_TEMPLATE/discussion.md b/.github/ISSUE_TEMPLATE/discussion.md
index 4bd6a92cfc6e71..b83e727da0a269 100644
--- a/.github/ISSUE_TEMPLATE/discussion.md
+++ b/.github/ISSUE_TEMPLATE/discussion.md
@@ -3,15 +3,16 @@ name: 🗣 Start a Discussion
 about: Use https://github.com/react-native-community/discussions-and-proposals to propose changes or discuss feature requests.
 ---
 
-Please use https://github.com/react-native-community/discussions-and-proposals to propose changes or discuss feature requests.
+Use https://github.com/react-native-community/discussions-and-proposals to propose changes or discuss feature requests. This helps us ensure bug reports and regressions are given the priority they require.
 
-We kindly ask that issues of this type are kept in that dedicated repo, to ensure bug reports and regressions are given the priority they require.
-
-Maintainers may flag an issue for Stack Overflow or kindly ask you to move the discussion to https://github.com/react-native-community/discussions-and-proposals at their own discretion.
+You may also use https://discuss.reactjs.org/ for discussions on topics that are not necessarily served by the Bug Report template.
 
 ---
 
 # For Discussion
 
-<!-- Describe your issue in detail. -->
+<!--
+  If you feel strongly about having your discussion in the main React Native repository, you may write your proposal here.
 
+  Please note that there is a high probability your issue will be closed by a maintainer, who may kindly ask you to move the discussion elsewhere.
+-->
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index dc039073dc9822..7c1323d0314fb5 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -23,6 +23,3 @@ If you are making a new change then one of the following should be done:
 #### Focus areas to test
 
 (optional)
-
-
-
diff --git a/.github/stale.yml b/.github/stale.yml
index 538514d6469695..4e334d27a425b0 100644
--- a/.github/stale.yml
+++ b/.github/stale.yml
@@ -2,7 +2,7 @@
 # Number of days of inactivity before an issue becomes stale
 daysUntilStale: 90
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 30
+daysUntilClose: 7
 # Issues with these labels will never be considered stale
 exemptLabels:
   - Good first issue
@@ -10,6 +10,7 @@ exemptLabels:
   - Core Team
   - "Help Wanted :octocat:"
   - ":warning:Regression"
+  - ":clock1:PR Pending"
 # Label to use when marking an issue as stale
 staleLabel: Stale 
 # Comment to post when marking an issue as stale. Set to `false` to disable
diff --git a/.gitignore b/.gitignore
index 76e86e6bc8c90f..ef7a07a6cd91aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -68,11 +68,9 @@ package-lock.json
 /third-party
 /packages/
 
-/third-party
-
 # Root dir shouldn't have Xcode project
 /*.xcodeproj
 
 # ReactCommon subdir shouldn't have Xcode project
 /ReactCommon/**/*.xcodeproj
-RNTester/build
\ No newline at end of file
+RNTester/build
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
index 062c7ca1df5c2d..0f7ad8bfc173ea 100644
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -1,43 +1,5 @@
-# [Open Source Code of Conduct](https://code.facebook.com/codeofconduct)
+# Code of Conduct
 
-This code of conduct outlines our expectations for participants within the **Facebook Open Source** community, as well as steps to reporting unacceptable behavior. We are committed to providing a welcoming and inspiring community for all and expect our code of conduct to be honored. Anyone who violates this code of conduct may be banned from the community.
-
-Our open source community strives to:
-
-* **Be friendly and patient.**
-* **Be welcoming:** We strive to be a community that welcomes and supports people of all backgrounds and identities. This includes, but is not limited to members of any race, ethnicity, culture, national origin, colour, immigration status, social and economic class, educational level, sex, sexual orientation, gender identity and expression, age, size, family status, political belief, religion, and mental and physical ability.
-* **Be considerate:** Your work will be used by other people, and you in turn will depend on the work of others. Any decision you take will affect users and colleagues, and you should take those consequences into account when making decisions. Remember that we’re a world-wide community, so you might not be communicating in someone else’s primary language.
-* **Be respectful:** Not all of us will agree all the time, but disagreement is no excuse for poor behavior and poor manners. We might all experience some frustration now and then, but we cannot allow that frustration to turn into a personal attack. It’s important to remember that a community where people feel uncomfortable or threatened is not a productive one.
-* **Be careful in the words that you choose:** we are a community of professionals, and we conduct ourselves professionally. Be kind to others. Do not insult or put down other participants. Harassment and other exclusionary behavior aren’t acceptable. This includes, but is not limited to:
-  * Violent threats or language directed against another person.
-  * Discriminatory jokes and language.
-  * Posting sexually explicit or violent material.
-  * Posting (or threatening to post) other people’s personally identifying information (“doxing”).
-  * Personal insults, especially those using racist or sexist terms.
-  * Unwelcome sexual attention.
-  * Advocating for, or encouraging, any of the above behavior.
-  * Repeated harassment of others. In general, if someone asks you to stop, then stop.
-* **When we disagree, try to understand why:** Disagreements, both social and technical, happen all the time. It is important that we resolve disagreements and differing views constructively.
-* **Remember that we’re different.** The strength of our community comes from its diversity, people from a wide range of backgrounds. Different people have different perspectives on issues. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere. Instead, focus on helping to resolve issues and learning from mistakes.
-
-This code is not exhaustive or complete. It serves to distill our common understanding of a collaborative, shared environment, and goals. We expect it to be followed in spirit as much as in the letter.
-
-## Diversity Statement
-
-We encourage everyone to participate and are committed to building a community for all. Although we may not be able to satisfy everyone, we all agree that everyone is equal. Whenever a participant has made a mistake, we expect them to take responsibility for it. If someone has been harmed or offended, it is our responsibility to listen carefully and respectfully, and do our best to right the wrong.
-
-Although this list cannot be exhaustive, we explicitly honor diversity in age, gender, gender identity or expression, culture, ethnicity, language, national origin, political beliefs, profession, race, religion, sexual orientation, socioeconomic status, and technical ability. We will not tolerate discrimination based on any of the protected characteristics above, including participants with disabilities.
-
-## Reporting Issues
-
-If you experience or witness unacceptable behavior—or have any other concerns—please report it by contacting us via opensource@fb.com. All reports will be handled with discretion. In your report please include:
-
-* Your contact information.
-* Names (real, nicknames, or pseudonyms) of any individuals involved. If there are additional witnesses, please include them as well. Your account of what occurred, and if you believe the incident is ongoing. If there is a publicly available record (e.g. a mailing list archive or a public IRC logger), please include a link.
-* Any additional information that may be helpful.
-
-After filing a report, a representative will contact you personally. If the person who is harassing you is part of the response team, they will recuse themselves from handling your incident. A representative will then review the incident, follow up with any additional questions, and make a decision as to how to respond. We will respect confidentiality requests for the purpose of protecting victims of abuse.
-
-Anyone asked to stop unacceptable behavior is expected to comply immediately. If an individual engages in unacceptable behavior, the representative may take any action they deem appropriate, up to and including a permanent ban from our community without warning.
-
-_This Code Of Conduct follows the [template](http://todogroup.org/opencodeofconduct/) established by the [TODO Group](http://todogroup.org/)._
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to.
+Please read the [full text](https://code.fb.com/codeofconduct/)
+so that you can understand what actions will and will not be tolerated.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 25ba2d5c1e1d51..743a6db7f3cecc 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,192 +1,41 @@
 # Contributing to React Native
 
-<!-- generated_contributing_start -->
-React Native is one of Facebook's first open source projects that is both under very active development and is also being used to ship code to everybody using Facebook's mobile apps. If you're interested in contributing to React Native, hopefully this document makes the process for contributing clear.
+We want to make contributing to this project as easy and transparent as possible. Read on to learn more about our development process and how to propose bug fixes and improvements. The [How to Contribute](https://facebook.github.io/react-native/docs/contributing.html) guide on the website goes into more detail for each of these areas.
 
-## [Code of Conduct](https://code.facebook.com/codeofconduct)
+## Our Development Process
 
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read [the full text](https://code.facebook.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
+Most changes from engineers at Facebook will sync to [GitHub](https://github.com/facebook/react-native) through a bridge with Facebook's internal source control. Changes from the community are handled through GitHub pull requests. Once a change made on GitHub is approved, it will first be imported into Facebook's internal source control. The change will eventually sync back to GitHub as a single commit once it has passed Facebook's internal tests.
 
-## Get involved
-
-There are many ways to contribute to React Native, and many of them do not involve writing any code. Here's a few ideas to get started:
-
-* Simply start using React Native. Go through the [Getting Started](https://facebook.github.io/react-native/docs/getting-started.html) guide. Does everything work as expected? If not, we're always looking for improvements. Let us know by [opening an issue](https://facebook.github.io/react-native/docs/contributing.html#reporting-new-issues).
-* Look through the [open issues](https://github.com/facebook/react-native/issues). Provide workarounds, ask for clarification, or suggest labels. Help [triage issues](https://facebook.github.io/react-native/docs/contributing.html#triaging-issues-and-pull-requests).
-* If you find an issue you would like to fix, [open a pull request](https://facebook.github.io/react-native/docs/contributing.html#your-first-pull-request). Issues tagged as [_Good first issue_](https://github.com/facebook/react-native/labels/Good%20first%20issue) are a good place to get started.
-* Read through the [React Native docs](https://facebook.github.io/react-native/docs/getting-started.html). If you find anything that is confusing or can be improved, you can make edits by clicking the "EDIT" button in the top-right corner of most docs.
-* Browse [Stack Overflow](https://stackoverflow.com/questions/tagged/react-native) and answer questions. This will help you get familiarized with common pitfalls or misunderstandings, which can be useful when contributing updates to the documentation.
-* Take a look at the [features requested](https://react-native.canny.io/feature-requests) by others in the community and consider opening a pull request if you see something you want to work on.
-
-Contributions are very welcome. If you think you need help planning your contribution, please hop into [#react-native](https://discord.gg/0ZcbPKXt5bZjGY5n) and let people know you're looking for a mentor.
-
-Core contributors to React Native meet monthly and post their meeting notes on the [React Native blog](https://facebook.github.io/react-native/blog). You can also find ad hoc discussions in the [React Native Core Contributors](https://www.facebook.com/groups/reactnativeoss/) Facebook group.
-
-### Triaging issues and pull requests
-
-One great way you can contribute to the project without writing any code is to help triage issues and pull requests as they come in.
-
-* Ask for more information if the issue does not provide all the details required by the template.
-* Suggest [labels](https://github.com/facebook/react-native/labels) that can help categorize issues.
-* Flag issues that are stale or that should be closed.
-* Ask for test plans and review code.
-
-You can learn more about handling issues in the [maintainer's guide](docs/maintainers.html#handling-issues).
-
-## Our development process
-
-Some of the core team will be working directly on [GitHub](https://github.com/facebook/react-native). These changes will be public from the beginning. Other changesets will come via a bridge with Facebook's internal source control. This is a necessity as it allows engineers at Facebook outside of the core team to move fast and contribute from an environment they are comfortable in.
-
-When a change made on GitHub is approved, it will first be imported into Facebook's internal source control. The change will eventually sync back to GitHub as a single commit once it has passed all internal tests.
-
-### Branch organization
-
-We will do our best to keep `master` in good shape, with tests passing at all times. But in order to move fast, we will make API changes that your application might not be compatible with. We will do our best to [communicate these changes](https://github.com/facebook/react-native/releases) and version appropriately so you can lock into a specific version if need be.
-
-To see what changes are coming and provide better feedback to React Native contributors, use the [latest release candidate](https://facebook.github.io/react-native/versions.html) when possible. By the time a release candidate is released, the changes it contains will have been shipped in production Facebook apps for over two weeks.
-
-## Bugs
-
-We use [GitHub Issues](https://github.com/facebook/react-native/issues) for our public bugs. If you would like to report a problem, take a look around and see if someone already opened an issue about it. If you a are certain this is a new, unreported bug, you can submit a [bug report](https://facebook.github.io/react-native/docs/contributing.html#reporting-new-issues).
-
-If you have questions about using React Native, the [Community page](https://facebook.github.io/react-native/help.html) list various resources that should help you get started.
-
-We also have a [place where you can request features or enhancements](https://react-native.canny.io/feature-requests). If you see anything you'd like to be implemented, vote it up and explain your use case.
-
-## Reporting new issues
-
-When [opening a new issue](https://github.com/facebook/react-native/issues/new), always make sure to fill out the [issue template](https://raw.githubusercontent.com/facebook/react-native/master/.github/ISSUE_TEMPLATE.md). **This step is very important!** Not doing so may result in your issue getting closed. Don't take this personally if this happens, and feel free to open a new issue once you've gathered all the information required by the template.
-
-* **One issue, one bug:** Please report a single bug per issue.
-* **Provide a Snack:** The best way to get attention on your issue is to provide a reduced test case. You can use [Snack](https://snack.expo.io/) to demonstrate the issue.
-* **Provide reproduction steps:** List all the steps necessary to reproduce the issue. Provide a Snack or upload a sample project to GitHub. The person reading your bug report should be able to follow these steps to reproduce your issue with minimal effort.
-* **Try out the latest version:** Verify that the issue can be reproduced locally by updating your project to use [React Native from `master`](https://facebook.github.io/react-native/versions.html). The bug may have already been fixed!
-
-We're not able to provide support through GitHub Issues. If you're looking for help with your code, consider asking on [Stack Overflow](https://stackoverflow.com/questions/tagged/react-native) or reaching out to the community through [other channels](https://facebook.github.io/react-native/support.html).
-
-### Security bugs
-
-Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe disclosure of security bugs. With that in mind, please do not file public issues; go through the process outlined on that page.
-
-## Pull requests
-
-### Your first pull request
-
-So you have decided to contribute code back to upstream by opening a pull request. You've invested a good chunk of time, and we appreciate it. We will do our best to work with you and get the PR looked at.
-
-Working on your first Pull Request? You can learn how from this free video series:
-
-[**How to Contribute to an Open Source Project on GitHub**](https://egghead.io/courses/how-to-contribute-to-an-open-source-project-on-github)
-
-We have a list of [beginner friendly issues](https://github.com/facebook/react-native/labels/Good%20first%20issue) to help you get your feet wet in the React Native codebase and familiar with our contribution process. This is a great place to get started.
-
-### Proposing a change
-
-If you would like to request a new feature or enhancement but are not yet thinking about opening a pull request, we have a [place to track feature requests](https://react-native.canny.io/feature-requests).
-
-If you intend to change the public API, or make any non-trivial changes to the implementation, we recommend [filing an issue](https://github.com/facebook/react-native/issues/new?title=%5BProposal%5D) that includes `[Proposal]` in the title. This lets us reach an agreement on your proposal before you put significant effort into it. These types of issues should be rare. If you have been contributing to the project long enough, you will probably already have access to the [React Native Core Contributors](https://www.facebook.com/groups/reactnativeoss/) Facebook Group, where this sort of discussion is usually held.
-
-If you're only fixing a bug, it's fine to submit a pull request right away but we still recommend to file an issue detailing what you're fixing. This is helpful in case we don't accept that specific fix but want to keep track of the issue.
-
-### Sending a pull request
-
-Small pull requests are much easier to review and more likely to get merged. Make sure the PR does only one thing, otherwise please split it.
+## Pull Requests
 
 Please make sure the following is done when submitting a pull request:
 
-1. Fork [the repository](https://github.com/facebook/react-native) and create your branch from `master`.
-2. Add the copyright notice to the top of any new files you've added.
-3. Describe your [**test plan**](https://facebook.github.io/react-native/docs/contributing.html#test-plan) in your pull request description. Make sure to [test your changes](https://facebook.github.io/react-native/docs/testing.html)!
-4. Make sure your code lints (`npm run lint`).
-5. If you haven't already, [sign the CLA](https://code.facebook.com/cla).
-
-All pull requests should be opened against the `master` branch. After opening your pull request, ensure [**all tests pass**](https://facebook.github.io/react-native/docs/contributing.html#contrinuous-integration-tests) on Circle CI. If a test fails and you believe it is unrelated to your change, leave a comment on the pull request explaining why.
-
-> **Note:** It is not necessary to keep clicking `Merge master to your branch` on the PR page. You would want to merge master if there are conflicts or tests are failing. The Facebook-GitHub-Bot ultimately squashes all commits to a single one before merging your PR.
-
-#### Test plan
-
-A good test plan has the exact commands you ran and their output, provides screenshots or videos if the pull request changes UI.
-
-* If you've added code that should be tested, add tests!
-* If you've changed APIs, update the documentation.
-
-See [What is a Test Plan?](https://medium.com/@martinkonicek/what-is-a-test-plan-8bfc840ec171#.y9lcuqqi9) to learn more.
-
-#### Continuous integration tests
-
-Make sure all **tests pass** on [Circle CI][circle]. PRs that break tests are unlikely to be merged. Learn more about [testing your changes here](https://facebook.github.io/react-native/docs/testing.html).
-
-[circle]: https://circleci.com/gh/facebook/react-native
+1. Fork the repo and create your branch from `master`.
+2. If you've added code that should be tested, add tests.
+3. If you've changed APIs, update the documentation.
+4. Ensure the test suite passes.
+5. Make sure your code lints.
+6. If you haven't already, complete the Contributor License Agreement ("CLA").
 
-#### Breaking changes
+## Contributor License Agreement ("CLA")
 
-When adding a new breaking change, follow this template in your pull request:
+In order to accept your pull request, we need you to submit a CLA. You only need to do this once to work on any of Facebook's open source projects.
 
-```
-### New breaking change here
+Complete your CLA here: <https://code.facebook.com/cla>
 
-* **Who does this affect**:
-* **How to migrate**:
-* **Why make this breaking change**:
-* **Severity (number of people affected x effort)**:
-```
+## Issues
 
-If your pull request is merged, a core contributor will update the [list of breaking changes](https://github.com/facebook/react-native/wiki/Breaking-Changes) which is then used to populate the release notes.
+We use GitHub issues to track public bugs. Please ensure your description is clear and has sufficient instructions to be able to reproduce the issue.
 
-#### Copyright Notice for files
+Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe disclosure of security bugs. In those cases, please go through the process outlined on that page and do not file a public issue.
 
-Copy and paste this to the top of your new file(s):
+## Coding Style
 
-```JS
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-```
+We use Prettier to format our JavaScript code. This saves you time and energy as you can let Prettier fix up any formatting issues automatically through its editor integrations, or by manually running `npm run prettier`. We also use a linter to catch styling issues that may exist in your code. You can check the status of your code styling by simply running `npm run lint`.
 
-#### Contributor License Agreement (CLA)
+However, there are still some styles that the linter cannot pick up, notably in Java or Objective-C code.
 
-In order to accept your pull request, we need you to submit a CLA. You only need to do this once, so if you've done this for another Facebook open source project, you're good to go. If you are submitting a pull request for the first time, the Facebook GitHub Bot will reply with a link to the CLA form. You may also [complete your CLA here](https://code.facebook.com/cla).
-
-### What happens next?
-
-The core team will be monitoring for pull requests. Read [what to expect from maintainers](https://facebook.github.io/react-native/docs/maintainers.html#handling-pull-requests) to understand what may happen after you open a pull request.
-
-## Style Guide
-
-Our linter will catch most styling issues that may exist in your code. You can check the status of your code styling by simply running `npm run lint`.
-
-However, there are still some styles that the linter cannot pick up.
-
-### Code Conventions
-
-#### General
-
-* **Most important: Look around.** Match the style you see used in the rest of the project. This includes formatting, naming things in code, naming things in documentation.
-* Add trailing commas,
-* 2 spaces for indentation (no tabs)
-* "Attractive"
-
-#### JavaScript
-
-* Use semicolons;
-* ES6 standards
-* Prefer `'` over `"`
-* Do not use the optional parameters of `setTimeout` and `setInterval`
-* 80 character line length
-
-#### JSX
-
-* Prefer `"` over `'` for string literal props
-* When wrapping opening tags over multiple lines, place one prop per line
-* `{}` of props should hug their values (no spaces)
-* Place the closing `>` of opening tags on the same line as the last prop
-* Place the closing `/>` of self-closing tags on their own line and left-align them with the opening `<`
-
-#### Objective-C
+**Objective-C:**
 
 * Space after `@property` declarations
 * Brackets on *every* `if`, on the *same* line
@@ -194,17 +43,13 @@ However, there are still some styles that the linter cannot pick up.
 * *Try* to keep it around 80 characters line length (sometimes it's just not possible...)
 * `*` operator goes with the variable name (e.g. `NSObject *variableName;`)
 
-#### Java
+**Java:**
 
 * If a method call spans multiple lines closing bracket is on the same line as the last argument.
 * If a method header doesn't fit on one line each argument goes on a separate line.
 * 100 character line length
 
-### Documentation
-
-* Do not wrap lines at 80 characters - configure your editor to soft-wrap when editing documentation.
-
 ## License
 
-By contributing to React Native, you agree that your contributions will be licensed under its MIT license.
-<!-- generated_contributing_end -->
+By contributing to React Native, you agree that your contributions will be licensed
+under the LICENSE file in the root directory of this source tree.
diff --git a/ContainerShip/Dockerfile.android b/ContainerShip/Dockerfile.android
index 881957d324def5..33ab9da509be6a 100644
--- a/ContainerShip/Dockerfile.android
+++ b/ContainerShip/Dockerfile.android
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # React Native Android Unit Tests
 #
 # This image builds upon the React Native Base Android Development Environment
@@ -52,7 +57,7 @@ ADD build.gradle /app/build.gradle
 ADD react.gradle /app/react.gradle
 
 # compile native libs with Gradle script, we need bridge for unit and integration tests
-RUN ./gradlew :ReactAndroid:packageReactNdkLibsForBuck -Pjobs=1 -Pcom.android.build.threadPoolSize=1
+RUN ./gradlew :ReactAndroid:packageReactNdkLibsForBuck -Pjobs=1
 
 # add all react-native code
 ADD . /app
diff --git a/ContainerShip/Dockerfile.android-base b/ContainerShip/Dockerfile.android-base
index ab9e86dd27c7ad..b07bcd2cf063a3 100644
--- a/ContainerShip/Dockerfile.android-base
+++ b/ContainerShip/Dockerfile.android-base
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # React Native Base Android Development Environment
 #
 # This image provides a base Android development environment for React Native,
@@ -18,10 +23,10 @@ LABEL maintainer="Héctor Ramos <hector@fb.com>"
 
 # set default build arguments
 ARG SDK_VERSION=sdk-tools-linux-3859397.zip
-ARG ANDROID_BUILD_VERSION=27
-ARG ANDROID_TOOLS_VERSION=27.0.3
-ARG BUCK_VERSION=v2018.07.23.01
-ARG NDK_VERSION=17b
+ARG ANDROID_BUILD_VERSION=28
+ARG ANDROID_TOOLS_VERSION=28.0.3
+ARG BUCK_VERSION=v2018.10.29.01
+ARG NDK_VERSION=17c
 ARG NODE_VERSION=8.10.0
 ARG WATCHMAN_VERSION=4.9.0
 
diff --git a/ContainerShip/Dockerfile.javascript b/ContainerShip/Dockerfile.javascript
index 7c1e14bb9b845b..5e077f972318c9 100644
--- a/ContainerShip/Dockerfile.javascript
+++ b/ContainerShip/Dockerfile.javascript
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 FROM library/node:6.9.2
 
 ENV YARN_VERSION=0.27.5
diff --git a/ContainerShip/scripts/run-android-ci-instrumentation-tests.js b/ContainerShip/scripts/run-android-ci-instrumentation-tests.js
index c16c7990ed317d..a788bf19b80a26 100644
--- a/ContainerShip/scripts/run-android-ci-instrumentation-tests.js
+++ b/ContainerShip/scripts/run-android-ci-instrumentation-tests.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -38,7 +38,7 @@ const test_opts = {
     PATH: argv.path || './ReactAndroid/src/androidTest/java/com/facebook/react/tests',
     RETRIES: parseInt(argv.retries || 2, 10),
 
-    TEST_TIMEOUT: parseInt(argv['test-timeout'] || 1000 * 60 * 10),
+    TEST_TIMEOUT: parseInt(argv['test-timeout'] || 1000 * 60 * 10, 10),
 
     OFFSET: argv.offset,
     COUNT: argv.count,
@@ -68,7 +68,6 @@ testClasses = testClasses.map((clazz) => {
 
 // only process subset of the tests at corresponding offset and count if args provided
 if (test_opts.COUNT != null && test_opts.OFFSET != null) {
-    const testCount = testClasses.length;
     const start = test_opts.COUNT * test_opts.OFFSET;
     const end = start + test_opts.COUNT;
 
diff --git a/ContainerShip/scripts/run-android-docker-instrumentation-tests.sh b/ContainerShip/scripts/run-android-docker-instrumentation-tests.sh
index ed7183dec9d5fc..63ee31b47cf2d6 100644
--- a/ContainerShip/scripts/run-android-docker-instrumentation-tests.sh
+++ b/ContainerShip/scripts/run-android-docker-instrumentation-tests.sh
@@ -1,4 +1,10 @@
 #!/bin/bash
+#
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 
 # for buck gen
 mount -o remount,exec /dev/shm
@@ -6,7 +12,7 @@ mount -o remount,exec /dev/shm
 AVD_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 8 | head -n 1)
 
 # create virtual device
-echo no | android create avd -n $AVD_UUID -f -t android-19 --abi default/armeabi-v7a
+echo no | android create avd -n "$AVD_UUID" -f -t android-19 --abi default/armeabi-v7a
 
 # emulator setup
 emulator64-arm -avd $AVD_UUID -no-skin -no-audio -no-window -no-boot-anim &
@@ -28,8 +34,9 @@ watchman shutdown-server
 node local-cli/cli.js bundle --platform android --dev true --entry-file ReactAndroid/src/androidTest/js/TestBundle.js --bundle-output ReactAndroid/src/androidTest/assets/AndroidTestBundle.js
 
 # build test APK
+# shellcheck disable=SC1091
 source ./scripts/android-setup.sh && NO_BUCKD=1 retry3 buck install ReactAndroid/src/androidTest/buck-runner:instrumentation-tests --config build.threads=1
 
 # run installed apk with tests
-node ./ContainerShip/scripts/run-android-ci-instrumentation-tests.js $*
+node ./ContainerShip/scripts/run-android-ci-instrumentation-tests.js "$*"
 exit $?
diff --git a/ContainerShip/scripts/run-android-docker-unit-tests.sh b/ContainerShip/scripts/run-android-docker-unit-tests.sh
index 5a58bb352e5421..8653ccd9d19555 100644
--- a/ContainerShip/scripts/run-android-docker-unit-tests.sh
+++ b/ContainerShip/scripts/run-android-docker-unit-tests.sh
@@ -1,4 +1,10 @@
 #!/bin/bash
+#
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 
 # set default environment variables
 UNIT_TESTS_BUILD_THREADS="${UNIT_TESTS_BUILD_THREADS:-1}"
@@ -9,4 +15,4 @@ mount -o remount,exec /dev/shm
 set -x
 
 # run unit tests
-buck test ReactAndroid/src/test/... --config build.threads=$UNIT_TESTS_BUILD_THREADS
+buck test ReactAndroid/src/test/... --config build.threads="$UNIT_TESTS_BUILD_THREADS"
diff --git a/ContainerShip/scripts/run-ci-e2e-tests.sh b/ContainerShip/scripts/run-ci-e2e-tests.sh
index de2b97edb5bb7a..aead257ffce6b4 100755
--- a/ContainerShip/scripts/run-ci-e2e-tests.sh
+++ b/ContainerShip/scripts/run-ci-e2e-tests.sh
@@ -1,4 +1,10 @@
 #!/bin/bash
+#
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 
 set -ex
 
@@ -12,11 +18,12 @@ RUN_IOS=0
 RUN_JS=0
 
 RETRY_COUNT=${RETRY_COUNT:-2}
-AVD_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 8 | head -n 1)
-
+AVD_UUID=$(< /dev/urandom tr -dc 'a-zA-Z0-9' | fold -w 8 | head -n 1)
 ANDROID_NPM_DEPS="appium@1.5.1 mocha@2.4.5 wd@0.3.11 colors@1.0.3 pretty-data2@0.40.1"
-CLI_PACKAGE=$ROOT/react-native-cli/react-native-cli-*.tgz
-PACKAGE=$ROOT/react-native-*.tgz
+CLI_PACKAGE="$ROOT/react-native-cli/react-native-cli-*.tgz"
+PACKAGE="$ROOT/react-native-*.tgz"
+# Version of react-native-dummy to test against
+REACT_DUMMY_PLATFORM=react-native-dummy@0.1.0
 
 # solve issue with max user watches limit
 echo 65536 | tee -a /proc/sys/fs/inotify/max_user_watches
@@ -27,7 +34,7 @@ watchman shutdown-server
 # $2 -- command to run
 function retry() {
     local -r -i max_attempts="$1"; shift
-    local -r cmd="$@"
+    local -r cmd="$*"
     local -i attempt_num=1
 
     until $cmd; do
@@ -75,7 +82,7 @@ while :; do
 done
 
 function e2e_suite() {
-    cd $ROOT
+    cd "$ROOT"
 
     if [ $RUN_ANDROID -eq 0 ] && [ $RUN_IOS -eq 0 ] && [ $RUN_JS -eq 0 ]; then
       echo "No e2e tests specified!"
@@ -88,8 +95,8 @@ function e2e_suite() {
     # To make sure we actually installed the local version
     # of react-native, we will create a temp file inside the template
     # and check that it exists after `react-native init
-    IOS_MARKER=$(mktemp $ROOT/local-cli/templates/HelloWorld/ios/HelloWorld/XXXXXXXX)
-    ANDROID_MARKER=$(mktemp ${ROOT}/local-cli/templates/HelloWorld/android/XXXXXXXX)
+    IOS_MARKER="$(mktemp "$ROOT"/local-cli/templates/HelloWorld/ios/HelloWorld/XXXXXXXX)"
+    ANDROID_MARKER="$(mktemp "$ROOT"/local-cli/templates/HelloWorld/android/XXXXXXXX)"
 
     # install CLI
     cd react-native-cli
@@ -98,8 +105,8 @@ function e2e_suite() {
 
     # can skip cli install for non sudo mode
     if [ $RUN_CLI_INSTALL -ne 0 ]; then
-      npm install -g $CLI_PACKAGE
-      if [ $? -ne 0 ]; then
+      if ! npm install -g "$CLI_PACKAGE"
+      then
         echo "Could not install react-native-cli globally, please run in su mode"
         echo "Or with --skip-cli-install to skip this step"
         return 1
@@ -111,7 +118,7 @@ function e2e_suite() {
 
         # create virtual device
         if ! android list avd | grep "$AVD_UUID" > /dev/null; then
-            echo no | android create avd -n $AVD_UUID -f -t android-19 --abi default/armeabi-v7a
+            echo no | android create avd -n "$AVD_UUID" -f -t android-19 --abi default/armeabi-v7a
         fi
 
         # newline at end of adb devices call and first line is headers
@@ -124,9 +131,10 @@ function e2e_suite() {
         fi
 
         # emulator setup
-        emulator64-arm -avd $AVD_UUID -no-skin -no-audio -no-window -no-boot-anim &
+        emulator64-arm -avd "$AVD_UUID" -no-skin -no-audio -no-window -no-boot-anim &
 
         bootanim=""
+        # shellcheck disable=SC2076
         until [[ "$bootanim" =~ "stopped" ]]; do
             sleep 5
             bootanim=$(adb -e shell getprop init.svc.bootanim 2>&1)
@@ -135,23 +143,23 @@ function e2e_suite() {
 
         set -ex
 
-      ./gradlew :ReactAndroid:installArchives -Pjobs=1 -Dorg.gradle.jvmargs="-Xmx512m -XX:+HeapDumpOnOutOfMemoryError"
-      if [ $? -ne 0 ]; then
+      if ! ./gradlew :ReactAndroid:installArchives -Pjobs=1 -Dorg.gradle.jvmargs="-Xmx512m -XX:+HeapDumpOnOutOfMemoryError"
+      then
         echo "Failed to compile Android binaries"
         return 1
       fi
     fi
 
-    npm pack
-    if [ $? -ne 0 ]; then
+    if ! npm pack
+    then
       echo "Failed to pack react-native"
       return 1
     fi
 
-    cd $TEMP_DIR
+    cd "$TEMP_DIR"
 
-    retry $RETRY_COUNT react-native init EndToEndTest --version $PACKAGE --npm
-    if [ $? -ne 0 ]; then
+    if ! retry "$RETRY_COUNT" react-native init EndToEndTest --version "$PACKAGE" --npm
+    then
       echo "Failed to execute react-native init"
       echo "Most common reason is npm registry connectivity, try again"
       return 1
@@ -164,20 +172,21 @@ function e2e_suite() {
       echo "Running an Android e2e test"
       echo "Installing e2e framework"
 
-      retry $RETRY_COUNT npm install --save-dev $ANDROID_NPM_DEPS --silent >> /dev/null
-      if [ $? -ne 0 ]; then
+      if ! retry "$RETRY_COUNT" npm install --save-dev "$ANDROID_NPM_DEPS" --silent >> /dev/null
+      then
         echo "Failed to install appium"
         echo "Most common reason is npm registry connectivity, try again"
         return 1
       fi
 
-      cp $SCRIPTS/android-e2e-test.js android-e2e-test.js
+      cp "$SCRIPTS/android-e2e-test.js" android-e2e-test.js
 
-      cd android
+      (
+      cd android || exit
       echo "Downloading Maven deps"
       ./gradlew :app:copyDownloadableDepsToLibs
+      )
 
-      cd ..
       keytool -genkey -v -keystore android/keystores/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"
 
       node ./node_modules/.bin/appium >> /dev/null &
@@ -188,9 +197,8 @@ function e2e_suite() {
       buck build android/app
 
       # hack to get node unhung (kill buckd)
-      kill -9 $(pgrep java)
-
-      if [ $? -ne 0 ]; then
+      if ! kill -9 "$(pgrep java)"
+      then
         echo "could not execute Buck build, is it installed and in PATH?"
         return 1
       fi
@@ -201,23 +209,23 @@ function e2e_suite() {
       sleep 15
 
       echo "Executing android e2e test"
-      retry $RETRY_COUNT node node_modules/.bin/_mocha android-e2e-test.js
-      if [ $? -ne 0 ]; then
+      if ! retry "$RETRY_COUNT" node node_modules/.bin/_mocha android-e2e-test.js
+      then
         echo "Failed to run Android e2e tests"
         echo "Most likely the code is broken"
         return 1
       fi
 
       # kill packager process
-      if kill -0 $SERVER_PID; then
+      if kill -0 "$SERVER_PID"; then
         echo "Killing packager $SERVER_PID"
-        kill -9 $SERVER_PID
+        kill -9 "$SERVER_PID"
       fi
 
       # kill appium process
-      if kill -0 $APPIUM_PID; then
+      if kill -0 "$APPIUM_PID"; then
         echo "Killing appium $APPIUM_PID"
-        kill -9 $APPIUM_PID
+        kill -9 "$APPIUM_PID"
       fi
 
     fi
@@ -230,24 +238,37 @@ function e2e_suite() {
     # js tests
     if [ $RUN_JS -ne 0 ]; then
       # Check the packager produces a bundle (doesn't throw an error)
-      react-native bundle --max-workers 1 --platform android --dev true --entry-file index.js --bundle-output android-bundle.js
-      if [ $? -ne 0 ]; then
+      if ! react-native bundle --max-workers 1 --platform android --dev true --entry-file index.js --bundle-output android-bundle.js
+      then
         echo "Could not build android bundle"
         return 1
       fi
 
-      react-native bundle --max-workers 1 --platform ios --dev true --entry-file index.js --bundle-output ios-bundle.js
-      if [ $? -ne 0 ]; then
+      if ! react-native bundle --max-workers 1 --platform ios --dev true --entry-file index.js --bundle-output ios-bundle.js
+      then
         echo "Could not build iOS bundle"
         return 1
       fi
+
+      if ! retry "$RETRY_COUNT" npm install --save "$REACT_DUMMY_PLATFORM" --silent >> /dev/null
+      then
+        echo "Failed to install react-native-dummy"
+        echo "Most common reason is npm registry connectivity, try again"
+        return 1
+      fi
+
+      if ! react-native bundle --max-workers 1 --platform dummy --dev true --entry-file index.js --bundle-output dummy-bundle.js
+      then
+        echo "Could not build dummy bundle"
+        return 1
+      fi
     fi
 
     # directory cleanup
-    rm $IOS_MARKER
-    rm $ANDROID_MARKER
+    rm "$IOS_MARKER"
+    rm "$ANDROID_MARKER"
 
     return 0
 }
 
-retry $RETRY_COUNT e2e_suite
+retry "$RETRY_COUNT" e2e_suite
diff --git a/ContainerShip/scripts/run-instrumentation-tests-via-adb-shell.sh b/ContainerShip/scripts/run-instrumentation-tests-via-adb-shell.sh
index 5a9a976a97da4e..d2b4b9ee275a12 100755
--- a/ContainerShip/scripts/run-instrumentation-tests-via-adb-shell.sh
+++ b/ContainerShip/scripts/run-instrumentation-tests-via-adb-shell.sh
@@ -1,5 +1,12 @@
 #!/bin/bash
+#
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 
+# shellcheck disable=SC1117
 # Python script to run instrumentation tests, copied from https://github.com/circleci/circle-dummy-android
 # Example: ./scripts/run-android-instrumentation-tests.sh com.facebook.react.tests com.facebook.react.tests.ReactPickerTestCase
 #
@@ -9,7 +16,7 @@ export PATH="$ANDROID_HOME/platform-tools:$ANDROID_HOME/tools:$PATH"
 adb logcat -c
 
 # run tests and check output
-python - $1 $2 << END
+python - "$1" "$2" << END
 
 import re
 import subprocess as sp
@@ -24,7 +31,7 @@ test_class = None
 
 if len(sys.argv) > 2:
   test_class = sys.argv[2]
-  
+
 def update():
   # prevent CircleCI from killing the process for inactivity
   while not done:
@@ -38,10 +45,10 @@ t.start()
 def run():
   sp.Popen(['adb', 'wait-for-device']).communicate()
   if (test_class != None):
-    p = sp.Popen('adb shell am instrument -w -e class %s %s/android.support.test.runner.AndroidJUnitRunner' 
+    p = sp.Popen('adb shell am instrument -w -e class %s %s/android.support.test.runner.AndroidJUnitRunner'
       % (test_class, test_app), shell=True, stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
   else :
-    p = sp.Popen('adb shell am instrument -w %s/android.support.test.runner.AndroidJUnitRunner' 
+    p = sp.Popen('adb shell am instrument -w %s/android.support.test.runner.AndroidJUnitRunner'
       % (test_app), shell=True, stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
   return p.communicate()
 
diff --git a/DockerTests.md b/DockerTests.md
index f1714db87a0a05..429e312ceb31be 100644
--- a/DockerTests.md
+++ b/DockerTests.md
@@ -12,9 +12,9 @@ See <https://docs.docker.com/engine/installation/> for more information on how t
 
 We have added a number of default run scripts to the `package.json` file to simplify building and running your tests.
 
-`npm run test-android-setup` - Pulls down the base android docker image used for running the tests
+`npm run docker-setup-android` - Pulls down the base android docker image used for running the tests
 
-`npm run test-android-build` - Builds the docker image used to run the tests
+`npm run docker-build-android` - Builds the docker image used to run the tests
 
 `npm run test-android-run-unit` - Runs all the unit tests that have been built in the latest react/android docker image (note: you need to run test-android-build before executing this, if the image does not exist it will fail)
 
diff --git a/IntegrationTests/AccessibilityManagerTest.js b/IntegrationTests/AccessibilityManagerTest.js
index 50c2c1c2c301e5..0a059d99c27c24 100644
--- a/IntegrationTests/AccessibilityManagerTest.js
+++ b/IntegrationTests/AccessibilityManagerTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/AppEventsTest.js b/IntegrationTests/AppEventsTest.js
index 90da0bd87c1ac2..e88e97909d35e9 100644
--- a/IntegrationTests/AppEventsTest.js
+++ b/IntegrationTests/AppEventsTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/AsyncStorageTest.js b/IntegrationTests/AsyncStorageTest.js
index cc001bc54dea8b..3e3fc02343d2cc 100644
--- a/IntegrationTests/AsyncStorageTest.js
+++ b/IntegrationTests/AsyncStorageTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 
 const React = require('react');
 const ReactNative = require('react-native');
-const {AsyncStorage, Text, View} = ReactNative;
+const {AsyncStorage, Text, View, StyleSheet} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
 const deepDiffer = require('deepDiffer');
@@ -196,7 +196,7 @@ class AsyncStorageTest extends React.Component<{}, $FlowFixMeState> {
 
   render() {
     return (
-      <View style={{backgroundColor: 'white', padding: 40}}>
+      <View style={styles.container}>
         <Text>
           {/* $FlowFixMe(>=0.54.0 site=react_native_fb,react_native_oss) This
              * comment suppresses an error found when Flow v0.54 was deployed.
@@ -210,6 +210,13 @@ class AsyncStorageTest extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
+const styles = StyleSheet.create({
+  container: {
+    backgroundColor: 'white',
+    padding: 40,
+  },
+});
+
 AsyncStorageTest.displayName = 'AsyncStorageTest';
 
 module.exports = AsyncStorageTest;
diff --git a/IntegrationTests/ImageCachePolicyTest.js b/IntegrationTests/ImageCachePolicyTest.js
index 52d1be1d03ea03..0dae9812cf6e24 100644
--- a/IntegrationTests/ImageCachePolicyTest.js
+++ b/IntegrationTests/ImageCachePolicyTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -58,7 +58,7 @@ class ImageCachePolicyTest extends React.Component<Props, $FlowFixMeState> {
 
   render() {
     return (
-      <View style={{flex: 1}}>
+      <View style={styles.container}>
         <Text>Hello</Text>
         <Image
           source={{
@@ -110,6 +110,9 @@ class ImageCachePolicyTest extends React.Component<Props, $FlowFixMeState> {
 }
 
 const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+  },
   base: {
     width: 100,
     height: 100,
diff --git a/IntegrationTests/ImageSnapshotTest.js b/IntegrationTests/ImageSnapshotTest.js
index 0da33f62718a3f..c4ffaae51c2ec4 100644
--- a/IntegrationTests/ImageSnapshotTest.js
+++ b/IntegrationTests/ImageSnapshotTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 
 const React = require('react');
 const ReactNative = require('react-native');
-const {Image, View} = ReactNative;
+const {Image} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
 class ImageSnapshotTest extends React.Component<{}> {
diff --git a/IntegrationTests/IntegrationTestHarnessTest.js b/IntegrationTests/IntegrationTestHarnessTest.js
index 045d2e7e1eae1e..efe6cd4cd2f643 100644
--- a/IntegrationTests/IntegrationTestHarnessTest.js
+++ b/IntegrationTests/IntegrationTestHarnessTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,28 +10,22 @@
 
 'use strict';
 
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
 const requestAnimationFrame = require('fbjs/lib/requestAnimationFrame');
 const React = require('react');
-const PropTypes = require('prop-types');
 const ReactNative = require('react-native');
-const {Text, View} = ReactNative;
+const {Text, View, StyleSheet} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
-class IntegrationTestHarnessTest extends React.Component<
-  {
-    shouldThrow?: boolean,
-    waitOneFrame?: boolean,
-  },
-  $FlowFixMeState,
-> {
-  static propTypes = {
-    shouldThrow: PropTypes.bool,
-    waitOneFrame: PropTypes.bool,
-  };
+type Props = $ReadOnly<{|
+  shouldThrow?: boolean,
+  waitOneFrame?: boolean,
+|}>;
+
+type State = {|
+  done: boolean,
+|};
 
+class IntegrationTestHarnessTest extends React.Component<Props, State> {
   state = {
     done: false,
   };
@@ -60,7 +54,7 @@ class IntegrationTestHarnessTest extends React.Component<
 
   render() {
     return (
-      <View style={{backgroundColor: 'white', padding: 40}}>
+      <View style={styles.container}>
         <Text>
           {/* $FlowFixMe(>=0.54.0 site=react_native_fb,react_native_oss) This
              * comment suppresses an error found when Flow v0.54 was deployed.
@@ -73,6 +67,13 @@ class IntegrationTestHarnessTest extends React.Component<
   }
 }
 
+const styles = StyleSheet.create({
+  container: {
+    backgroundColor: 'white',
+    padding: 40,
+  },
+});
+
 IntegrationTestHarnessTest.displayName = 'IntegrationTestHarnessTest';
 
 module.exports = IntegrationTestHarnessTest;
diff --git a/IntegrationTests/IntegrationTestsApp.js b/IntegrationTests/IntegrationTestsApp.js
index 421b4f6abe2b19..348d0867e73e97 100644
--- a/IntegrationTests/IntegrationTestsApp.js
+++ b/IntegrationTests/IntegrationTestsApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/LayoutEventsTest.js b/IntegrationTests/LayoutEventsTest.js
index b51d5dc06cee42..af828d6f122ae7 100644
--- a/IntegrationTests/LayoutEventsTest.js
+++ b/IntegrationTests/LayoutEventsTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,11 +12,12 @@
 
 const Platform = require('Platform');
 const React = require('react');
-const createReactClass = require('create-react-class');
 const ReactNative = require('react-native');
 const {Image, LayoutAnimation, StyleSheet, Text, View} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
+import type {ViewStyleProp} from 'StyleSheet';
+
 const deepDiffer = require('deepDiffer');
 
 function debug(...args) {
@@ -24,14 +25,8 @@ function debug(...args) {
 }
 
 import type {Layout, LayoutEvent} from 'CoreEventTypes';
-type Style = {
-  margin?: number,
-  padding?: number,
-  borderColor?: string,
-  borderWidth?: number,
-  backgroundColor?: string,
-  width?: number,
-};
+
+type Props = $ReadOnly<{||}>;
 
 type State = {
   didAnimation: boolean,
@@ -39,18 +34,20 @@ type State = {
   imageLayout?: Layout,
   textLayout?: Layout,
   viewLayout?: Layout,
-  viewStyle?: Style,
-  containerStyle?: Style,
+  viewStyle?: ViewStyleProp,
+  containerStyle?: ViewStyleProp,
 };
 
-const LayoutEventsTest = createReactClass({
-  displayName: 'LayoutEventsTest',
-  getInitialState(): State {
-    return {
-      didAnimation: false,
-    };
-  },
-  animateViewLayout: function() {
+class LayoutEventsTest extends React.Component<Props, State> {
+  _view: ?React.ElementRef<typeof View>;
+  _img: ?React.ElementRef<typeof Image>;
+  _txt: ?React.ElementRef<typeof Text>;
+
+  state: State = {
+    didAnimation: false,
+  };
+
+  animateViewLayout() {
     debug('animateViewLayout invoked');
     LayoutAnimation.configureNext(
       Platform.OS === 'macos'
@@ -62,26 +59,38 @@ const LayoutEventsTest = createReactClass({
       },
     );
     this.setState({viewStyle: {margin: 60}});
-  },
-  addWrapText: function() {
+  }
+
+  addWrapText = () => {
     debug('addWrapText invoked');
     this.setState(
       {extraText: '  And a bunch more text to wrap around a few lines.'},
       () => this.checkLayout(this.changeContainer),
     );
-  },
-  changeContainer: function() {
+  };
+
+  changeContainer = () => {
     debug('changeContainer invoked');
     this.setState({containerStyle: {width: 280}}, () =>
       this.checkLayout(TestModule.markTestCompleted),
     );
-  },
-  checkLayout: function(next?: ?Function) {
-    if (!this.isMounted()) {
+  };
+
+  checkLayout = (next?: ?() => void) => {
+    const view = this._view;
+    const txt = this._txt;
+    const img = this._img;
+
+    if (view == null || txt == null || img == null) {
       return;
     }
-    this.refs.view.measure((x, y, width, height) => {
-      this.compare('view', {x, y, width, height}, this.state.viewLayout);
+
+    view.measure((x, y, width, height) => {
+      this.compare(
+        'view',
+        {x, y, width, height},
+        this.state.viewLayout || null,
+      );
       if (typeof next === 'function') {
         next();
       } else if (!this.state.didAnimation) {
@@ -90,14 +99,17 @@ const LayoutEventsTest = createReactClass({
         this.state.didAnimation = true;
       }
     });
-    this.refs.txt.measure((x, y, width, height) => {
+
+    txt.measure((x, y, width, height) => {
       this.compare('txt', {x, y, width, height}, this.state.textLayout);
     });
-    this.refs.img.measure((x, y, width, height) => {
+
+    img.measure((x, y, width, height) => {
       this.compare('img', {x, y, width, height}, this.state.imageLayout);
     });
-  },
-  compare: function(node: string, measured: any, onLayout: any): void {
+  };
+
+  compare(node: string, measured: Layout, onLayout?: ?Layout): void {
     if (deepDiffer(measured, onLayout)) {
       const data = {measured, onLayout};
       throw new Error(
@@ -106,34 +118,50 @@ const LayoutEventsTest = createReactClass({
           JSON.stringify(data, null, '  '),
       );
     }
-  },
-  onViewLayout: function(e: LayoutEvent) {
+  }
+
+  onViewLayout = (e: LayoutEvent) => {
     debug('received view layout event\n', e.nativeEvent);
     this.setState({viewLayout: e.nativeEvent.layout}, this.checkLayout);
-  },
-  onTextLayout: function(e: LayoutEvent) {
+  };
+
+  onTextLayout = (e: LayoutEvent) => {
     debug('received text layout event\n', e.nativeEvent);
     this.setState({textLayout: e.nativeEvent.layout}, this.checkLayout);
-  },
-  onImageLayout: function(e: LayoutEvent) {
+  };
+
+  onImageLayout = (e: LayoutEvent) => {
     debug('received image layout event\n', e.nativeEvent);
     this.setState({imageLayout: e.nativeEvent.layout}, this.checkLayout);
-  },
-  render: function() {
+  };
+
+  render() {
     const viewStyle = [styles.view, this.state.viewStyle];
     const textLayout = this.state.textLayout || {width: '?', height: '?'};
     const imageLayout = this.state.imageLayout || {x: '?', y: '?'};
     debug('viewLayout', this.state.viewLayout);
     return (
       <View style={[styles.container, this.state.containerStyle]}>
-        <View ref="view" onLayout={this.onViewLayout} style={viewStyle}>
+        <View
+          ref={ref => {
+            this._view = ref;
+          }}
+          onLayout={this.onViewLayout}
+          style={viewStyle}>
           <Image
-            ref="img"
+            ref={ref => {
+              this._img = ref;
+            }}
             onLayout={this.onImageLayout}
             style={styles.image}
             source={{uri: 'uie_thumb_big.png'}}
           />
-          <Text ref="txt" onLayout={this.onTextLayout} style={styles.text}>
+          <Text
+            ref={ref => {
+              this._txt = ref;
+            }}
+            onLayout={this.onTextLayout}
+            style={styles.text}>
             A simple piece of text.{this.state.extraText}
           </Text>
           <Text>
@@ -144,8 +172,8 @@ const LayoutEventsTest = createReactClass({
         </View>
       </View>
     );
-  },
-});
+  }
+}
 
 const styles = StyleSheet.create({
   container: {
@@ -171,6 +199,4 @@ const styles = StyleSheet.create({
   },
 });
 
-LayoutEventsTest.displayName = 'LayoutEventsTest';
-
 module.exports = LayoutEventsTest;
diff --git a/IntegrationTests/LoggingTestModule.js b/IntegrationTests/LoggingTestModule.js
index 905abee400828d..32a049f8866265 100644
--- a/IntegrationTests/LoggingTestModule.js
+++ b/IntegrationTests/LoggingTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/PromiseTest.js b/IntegrationTests/PromiseTest.js
index facf8b45cdc746..c36d3beb017b69 100644
--- a/IntegrationTests/PromiseTest.js
+++ b/IntegrationTests/PromiseTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/PropertiesUpdateTest.js b/IntegrationTests/PropertiesUpdateTest.js
index 33d17da5e5c442..8c61685bf8848e 100644
--- a/IntegrationTests/PropertiesUpdateTest.js
+++ b/IntegrationTests/PropertiesUpdateTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/RCTRootViewIntegrationTestApp.js b/IntegrationTests/RCTRootViewIntegrationTestApp.js
index 6afda59cd688c1..2466b6378586eb 100644
--- a/IntegrationTests/RCTRootViewIntegrationTestApp.js
+++ b/IntegrationTests/RCTRootViewIntegrationTestApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,6 @@
 
 'use strict';
 
-require('regenerator-runtime/runtime');
-
 const React = require('react');
 const ReactNative = require('react-native');
 
diff --git a/IntegrationTests/ReactContentSizeUpdateTest.js b/IntegrationTests/ReactContentSizeUpdateTest.js
index be0b06b6abf56b..707abc6cb727e3 100644
--- a/IntegrationTests/ReactContentSizeUpdateTest.js
+++ b/IntegrationTests/ReactContentSizeUpdateTest.js
@@ -1,78 +1,89 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
+ * @flow
  */
 
 'use strict';
 
 const React = require('react');
-const createReactClass = require('create-react-class');
 const ReactNative = require('react-native');
 const RCTNativeAppEventEmitter = require('RCTNativeAppEventEmitter');
-const Subscribable = require('Subscribable');
-const TimerMixin = require('react-timer-mixin');
 
 const {View} = ReactNative;
 
 const {TestModule} = ReactNative.NativeModules;
+import type EmitterSubscription from 'EmitterSubscription';
 
 const reactViewWidth = 101;
 const reactViewHeight = 102;
 const newReactViewWidth = 201;
 const newReactViewHeight = 202;
 
-const ReactContentSizeUpdateTest = createReactClass({
-  displayName: 'ReactContentSizeUpdateTest',
-  mixins: [Subscribable.Mixin, TimerMixin],
+type Props = {||};
 
-  UNSAFE_componentWillMount: function() {
-    this.addListenerOn(
-      RCTNativeAppEventEmitter,
+type State = {|
+  height: number,
+  width: number,
+|};
+
+class ReactContentSizeUpdateTest extends React.Component<Props, State> {
+  _timeoutID: ?TimeoutID = null;
+  _subscription: ?EmitterSubscription = null;
+
+  state = {
+    height: reactViewHeight,
+    width: reactViewWidth,
+  };
+
+  UNSAFE_componentWillMount() {
+    this._subscription = RCTNativeAppEventEmitter.addListener(
       'rootViewDidChangeIntrinsicSize',
       this.rootViewDidChangeIntrinsicSize,
     );
-  },
+  }
 
-  getInitialState: function() {
-    return {
-      height: reactViewHeight,
-      width: reactViewWidth,
-    };
-  },
+  componentDidMount() {
+    this._timeoutID = setTimeout(() => {
+      this.updateViewSize();
+    }, 1000);
+  }
+
+  componentWillUnmount() {
+    if (this._timeoutID != null) {
+      clearTimeout(this._timeoutID);
+    }
 
-  updateViewSize: function() {
+    if (this._subscription != null) {
+      this._subscription.remove();
+    }
+  }
+
+  updateViewSize() {
     this.setState({
       height: newReactViewHeight,
       width: newReactViewWidth,
     });
-  },
-
-  componentDidMount: function() {
-    this.setTimeout(() => {
-      this.updateViewSize();
-    }, 1000);
-  },
+  }
 
-  rootViewDidChangeIntrinsicSize: function(intrinsicSize) {
+  rootViewDidChangeIntrinsicSize = (intrinsicSize: State) => {
     if (
       intrinsicSize.height === newReactViewHeight &&
       intrinsicSize.width === newReactViewWidth
     ) {
       TestModule.markTestPassed(true);
     }
-  },
+  };
 
   render() {
     return (
       <View style={{height: this.state.height, width: this.state.width}} />
     );
-  },
-});
-
-ReactContentSizeUpdateTest.displayName = 'ReactContentSizeUpdateTest';
+  }
+}
 
 module.exports = ReactContentSizeUpdateTest;
diff --git a/IntegrationTests/SimpleSnapshotTest.js b/IntegrationTests/SimpleSnapshotTest.js
index 2857f3f41b492a..fef8377373d0f6 100644
--- a/IntegrationTests/SimpleSnapshotTest.js
+++ b/IntegrationTests/SimpleSnapshotTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -34,7 +34,7 @@ class SimpleSnapshotTest extends React.Component<{}> {
 
   render() {
     return (
-      <View style={{backgroundColor: 'white', padding: 100}}>
+      <View style={styles.container}>
         <View style={styles.box1} />
         <View style={styles.box2} />
       </View>
@@ -43,6 +43,10 @@ class SimpleSnapshotTest extends React.Component<{}> {
 }
 
 const styles = StyleSheet.create({
+  container: {
+    backgroundColor: 'white',
+    padding: 100,
+  },
   box1: {
     width: 80,
     height: 50,
diff --git a/IntegrationTests/SizeFlexibilityUpdateTest.js b/IntegrationTests/SizeFlexibilityUpdateTest.js
index 0d0ebd4bfc20f3..42ce5bf5fb8173 100644
--- a/IntegrationTests/SizeFlexibilityUpdateTest.js
+++ b/IntegrationTests/SizeFlexibilityUpdateTest.js
@@ -1,46 +1,60 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
+ * @flow
  */
 
 'use strict';
 
 const React = require('react');
-const createReactClass = require('create-react-class');
 const ReactNative = require('react-native');
 const RCTNativeAppEventEmitter = require('RCTNativeAppEventEmitter');
-const Subscribable = require('Subscribable');
 const {View} = ReactNative;
 
 const {TestModule} = ReactNative.NativeModules;
+import type EmitterSubscription from 'EmitterSubscription';
 
 const reactViewWidth = 111;
 const reactViewHeight = 222;
 
 let finalState = false;
 
-const SizeFlexibilityUpdateTest = createReactClass({
-  displayName: 'SizeFlexibilityUpdateTest',
-  mixins: [Subscribable.Mixin],
+type Props = $ReadOnly<{|
+  width: boolean,
+  height: boolean,
+  both: boolean,
+  none: boolean,
+|}>;
 
-  UNSAFE_componentWillMount: function() {
-    this.addListenerOn(
-      RCTNativeAppEventEmitter,
+class SizeFlexibilityUpdateTest extends React.Component<Props> {
+  _subscription: ?EmitterSubscription = null;
+
+  UNSAFE_componentWillMount() {
+    this._subscription = RCTNativeAppEventEmitter.addListener(
       'rootViewDidChangeIntrinsicSize',
       this.rootViewDidChangeIntrinsicSize,
     );
-  },
+  }
+
+  componentWillUnmount() {
+    if (this._subscription != null) {
+      this._subscription.remove();
+    }
+  }
 
-  markPassed: function() {
+  markPassed = () => {
     TestModule.markTestPassed(true);
     finalState = true;
-  },
+  };
 
-  rootViewDidChangeIntrinsicSize: function(intrinsicSize) {
+  rootViewDidChangeIntrinsicSize = (intrinsicSize: {
+    width: number,
+    height: number,
+  }) => {
     if (finalState) {
       // If a test reaches its final state, it is not expected to do anything more
       TestModule.markTestPassed(false);
@@ -83,13 +97,11 @@ const SizeFlexibilityUpdateTest = createReactClass({
         return;
       }
     }
-  },
+  };
 
   render() {
     return <View style={{height: reactViewHeight, width: reactViewWidth}} />;
-  },
-});
-
-SizeFlexibilityUpdateTest.displayName = 'SizeFlexibilityUpdateTest';
+  }
+}
 
 module.exports = SizeFlexibilityUpdateTest;
diff --git a/IntegrationTests/SyncMethodTest.js b/IntegrationTests/SyncMethodTest.js
index 0b912396813027..d618ced4761585 100644
--- a/IntegrationTests/SyncMethodTest.js
+++ b/IntegrationTests/SyncMethodTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/TimersTest.js b/IntegrationTests/TimersTest.js
index 15d42c4c852a1c..c7eefb915333c3 100644
--- a/IntegrationTests/TimersTest.js
+++ b/IntegrationTests/TimersTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,75 +11,136 @@
 'use strict';
 
 const React = require('react');
-const createReactClass = require('create-react-class');
 const ReactNative = require('react-native');
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const TimerMixin = require('react-timer-mixin');
-
 const {StyleSheet, Text, View} = ReactNative;
 const {TestModule} = ReactNative.NativeModules;
 
-const TimersTest = createReactClass({
-  displayName: 'TimersTest',
-  mixins: [TimerMixin],
+type Props = $ReadOnly<{||}>;
 
-  _nextTest: () => {},
-  _interval: -1,
+type State = {|
+  count: number,
+  done: boolean,
+|};
 
-  getInitialState() {
-    return {
-      count: 0,
-      done: false,
-    };
-  },
+type ImmediateID = Object;
+
+class TimersTest extends React.Component<Props, State> {
+  _nextTest = () => {};
+  _interval: ?IntervalID = null;
+
+  _timeoutIDs: Set<TimeoutID> = new Set();
+  _intervalIDs: Set<IntervalID> = new Set();
+  _immediateIDs: Set<ImmediateID> = new Set();
+  _animationFrameIDs: Set<AnimationFrameID> = new Set();
+
+  state = {
+    count: 0,
+    done: false,
+  };
+
+  setTimeout(fn: () => void, time: number): TimeoutID {
+    const id = setTimeout(() => {
+      this._timeoutIDs.delete(id);
+      fn();
+    }, time);
+
+    this._timeoutIDs.add(id);
+
+    return id;
+  }
+
+  clearTimeout(id: TimeoutID) {
+    this._timeoutIDs.delete(id);
+    clearTimeout(id);
+  }
+
+  setInterval(fn: () => void, time: number): IntervalID {
+    const id = setInterval(() => {
+      fn();
+    }, time);
+
+    this._intervalIDs.add(id);
+
+    return id;
+  }
+
+  clearInterval(id: IntervalID) {
+    this._intervalIDs.delete(id);
+    clearInterval(id);
+  }
+
+  setImmediate(fn: () => void): ImmediateID {
+    const id = setImmediate(() => {
+      this._immediateIDs.delete(id);
+      fn();
+    });
+
+    this._immediateIDs.add(id);
+
+    return id;
+  }
+
+  requestAnimationFrame(fn: () => void): AnimationFrameID {
+    const id = requestAnimationFrame(() => {
+      this._animationFrameIDs.delete(id);
+      fn();
+    });
+
+    this._animationFrameIDs.add(id);
+
+    return id;
+  }
+
+  cancelAnimationFrame(id: AnimationFrameID): void {
+    this._animationFrameIDs.delete(id);
+    cancelAnimationFrame(id);
+  }
 
   componentDidMount() {
     this.setTimeout(this.testSetTimeout0, 1000);
-  },
+  }
 
   testSetTimeout0() {
     this.setTimeout(this.testSetTimeout1, 0);
-  },
+  }
 
   testSetTimeout1() {
     this.setTimeout(this.testSetTimeout50, 1);
-  },
+  }
 
   testSetTimeout50() {
     this.setTimeout(this.testRequestAnimationFrame, 50);
-  },
+  }
 
   testRequestAnimationFrame() {
     this.requestAnimationFrame(this.testSetInterval0);
-  },
+  }
 
   testSetInterval0() {
     this._nextTest = this.testSetInterval20;
     this._interval = this.setInterval(this._incrementInterval, 0);
-  },
+  }
 
   testSetInterval20() {
     this._nextTest = this.testSetImmediate;
     this._interval = this.setInterval(this._incrementInterval, 20);
-  },
+  }
 
   testSetImmediate() {
     this.setImmediate(this.testClearTimeout0);
-  },
+  }
 
   testClearTimeout0() {
     const timeout = this.setTimeout(() => this._fail('testClearTimeout0'), 0);
     this.clearTimeout(timeout);
     this.testClearTimeout30();
-  },
+  }
 
   testClearTimeout30() {
     const timeout = this.setTimeout(() => this._fail('testClearTimeout30'), 30);
     this.clearTimeout(timeout);
     this.setTimeout(this.testClearMulti, 50);
-  },
+  }
 
   testClearMulti() {
     const fails = [];
@@ -96,7 +157,7 @@ const TimersTest = createReactClass({
     this.setTimeout(() => this.clearTimeout(delayClear), 20);
 
     this.setTimeout(this.testOrdering, 50);
-  },
+  }
 
   testOrdering() {
     // Clear timers are set first because it's more likely to uncover bugs.
@@ -131,42 +192,73 @@ const TimersTest = createReactClass({
       25,
     );
     this.setTimeout(this.done, 50);
-  },
+  }
 
   done() {
     this.setState({done: true}, () => {
       TestModule.markTestCompleted();
     });
-  },
+  }
+
+  componentWillUnmount() {
+    for (const timeoutID of this._timeoutIDs) {
+      clearTimeout(timeoutID);
+    }
+
+    for (const intervalID of this._intervalIDs) {
+      clearInterval(intervalID);
+    }
+
+    for (const requestAnimationFrameID of this._animationFrameIDs) {
+      cancelAnimationFrame(requestAnimationFrameID);
+    }
+
+    for (const immediateID of this._immediateIDs) {
+      clearImmediate(immediateID);
+    }
+
+    this._timeoutIDs = new Set();
+    this._intervalIDs = new Set();
+    this._animationFrameIDs = new Set();
+    this._immediateIDs = new Set();
+
+    if (this._interval != null) {
+      clearInterval(this._interval);
+      this._interval = null;
+    }
+  }
 
   render() {
     return (
       <View style={styles.container}>
         <Text>
-          {this.constructor.displayName + ': \n'}
+          {this.constructor.name + ': \n'}
           Intervals: {this.state.count + '\n'}
           {this.state.done ? 'Done' : 'Testing...'}
         </Text>
       </View>
     );
-  },
+  }
 
   _incrementInterval() {
     if (this.state.count > 3) {
       throw new Error('interval incremented past end.');
     }
     if (this.state.count === 3) {
-      this.clearInterval(this._interval);
+      if (this._interval != null) {
+        this.clearInterval(this._interval);
+        this._interval = null;
+      }
       this.setState({count: 0}, this._nextTest);
       return;
     }
     this.setState({count: this.state.count + 1});
-  },
+  }
 
   _fail(caller: string): void {
     throw new Error('_fail called by ' + caller);
-  },
-});
+  }
+}
 
 const styles = StyleSheet.create({
   container: {
@@ -175,6 +267,4 @@ const styles = StyleSheet.create({
   },
 });
 
-TimersTest.displayName = 'TimersTest';
-
 module.exports = TimersTest;
diff --git a/IntegrationTests/WebSocketTest.js b/IntegrationTests/WebSocketTest.js
index f2478cbcb68539..0d2cd5e0b4d9e7 100644
--- a/IntegrationTests/WebSocketTest.js
+++ b/IntegrationTests/WebSocketTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,12 +18,6 @@ const {TestModule} = ReactNative.NativeModules;
 const DEFAULT_WS_URL = 'ws://localhost:5555/';
 
 const WS_EVENTS = ['close', 'error', 'message', 'open'];
-const WS_STATES = [
-  /* 0 */ 'CONNECTING',
-  /* 1 */ 'OPEN',
-  /* 2 */ 'CLOSING',
-  /* 3 */ 'CLOSED',
-];
 
 type State = {
   url: string,
@@ -50,7 +44,6 @@ class WebSocketTest extends React.Component<{}, State> {
 
   _waitFor = (condition: any, timeout: any, callback: any) => {
     let remaining = timeout;
-    let t;
     const timeoutFunction = function() {
       if (condition()) {
         callback(true);
@@ -60,10 +53,10 @@ class WebSocketTest extends React.Component<{}, State> {
       if (remaining === 0) {
         callback(false);
       } else {
-        t = setTimeout(timeoutFunction, 1000);
+        setTimeout(timeoutFunction, 1000);
       }
     };
-    t = setTimeout(timeoutFunction, 1000);
+    setTimeout(timeoutFunction, 1000);
   };
 
   _connect = () => {
@@ -121,39 +114,30 @@ class WebSocketTest extends React.Component<{}, State> {
   }
 
   testConnect = () => {
-    const component = this;
-    component._connect();
-    component._waitFor(component._socketIsConnected, 5, function(
-      connectSucceeded,
-    ) {
+    this._connect();
+    this._waitFor(this._socketIsConnected, 5, connectSucceeded => {
       if (!connectSucceeded) {
         TestModule.markTestPassed(false);
         return;
       }
-      component.testSendAndReceive();
+      this.testSendAndReceive();
     });
   };
 
   testSendAndReceive = () => {
-    const component = this;
-    component._sendTestMessage();
-    component._waitFor(component._receivedTestExpectedResponse, 5, function(
-      messageReceived,
-    ) {
+    this._sendTestMessage();
+    this._waitFor(this._receivedTestExpectedResponse, 5, messageReceived => {
       if (!messageReceived) {
         TestModule.markTestPassed(false);
         return;
       }
-      component.testDisconnect();
+      this.testDisconnect();
     });
   };
 
   testDisconnect = () => {
-    const component = this;
-    component._disconnect();
-    component._waitFor(component._socketIsDisconnected, 5, function(
-      disconnectSucceeded,
-    ) {
+    this._disconnect();
+    this._waitFor(this._socketIsDisconnected, 5, disconnectSucceeded => {
       TestModule.markTestPassed(disconnectSucceeded);
     });
   };
diff --git a/IntegrationTests/WebViewTest.js b/IntegrationTests/WebViewTest.js
index 74dbeddec6b5ce..269b9d24bdee81 100644
--- a/IntegrationTests/WebViewTest.js
+++ b/IntegrationTests/WebViewTest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/launchWebSocketServer.command b/IntegrationTests/launchWebSocketServer.command
index 1155f28946a284..a7c7ef25c9b487 100755
--- a/IntegrationTests/launchWebSocketServer.command
+++ b/IntegrationTests/launchWebSocketServer.command
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# Copyright (c) 2015-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
diff --git a/IntegrationTests/websocket_integration_test_server.js b/IntegrationTests/websocket_integration_test_server.js
index 2044c4de9da37a..75c799515d726f 100755
--- a/IntegrationTests/websocket_integration_test_server.js
+++ b/IntegrationTests/websocket_integration_test_server.js
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/LICENSE b/LICENSE
index 9e051010d82dc6..b96dcb0480a0b0 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2015-present, Facebook, Inc.
+Copyright (c) Facebook, Inc. and its affiliates.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/Libraries/ART/ARTCGFloatArray.h b/Libraries/ART/ARTCGFloatArray.h
index 72286a50527e84..a607904e0be1ed 100644
--- a/Libraries/ART/ARTCGFloatArray.h
+++ b/Libraries/ART/ARTCGFloatArray.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTContainer.h b/Libraries/ART/ARTContainer.h
index 532145825bd74b..5439d9fb1d2176 100644
--- a/Libraries/ART/ARTContainer.h
+++ b/Libraries/ART/ARTContainer.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTGroup.h b/Libraries/ART/ARTGroup.h
index d9dcb48c87b180..31edddde7b664f 100644
--- a/Libraries/ART/ARTGroup.h
+++ b/Libraries/ART/ARTGroup.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTGroup.m b/Libraries/ART/ARTGroup.m
index 1bc70725c030e8..56699114f4a3f2 100644
--- a/Libraries/ART/ARTGroup.m
+++ b/Libraries/ART/ARTGroup.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTNode.h b/Libraries/ART/ARTNode.h
index 8b66c205ef2440..9f381115a7646e 100644
--- a/Libraries/ART/ARTNode.h
+++ b/Libraries/ART/ARTNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTNode.m b/Libraries/ART/ARTNode.m
index b27b014b9e7d0e..ae1a152a7d7626 100644
--- a/Libraries/ART/ARTNode.m
+++ b/Libraries/ART/ARTNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTRenderable.h b/Libraries/ART/ARTRenderable.h
index e5735a1fbd81ef..077d47ec2c6c32 100644
--- a/Libraries/ART/ARTRenderable.h
+++ b/Libraries/ART/ARTRenderable.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTRenderable.m b/Libraries/ART/ARTRenderable.m
index d7a3115586f3dd..88349f8296e7b0 100644
--- a/Libraries/ART/ARTRenderable.m
+++ b/Libraries/ART/ARTRenderable.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTSerializablePath.js b/Libraries/ART/ARTSerializablePath.js
index 9c2d98e033fcc3..aafb74c45d065c 100644
--- a/Libraries/ART/ARTSerializablePath.js
+++ b/Libraries/ART/ARTSerializablePath.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTShape.h b/Libraries/ART/ARTShape.h
index ce685c564b06be..1a1fd429a8bf1a 100644
--- a/Libraries/ART/ARTShape.h
+++ b/Libraries/ART/ARTShape.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTShape.m b/Libraries/ART/ARTShape.m
index 935c8894994a2b..8a1a7d6979f3e9 100644
--- a/Libraries/ART/ARTShape.m
+++ b/Libraries/ART/ARTShape.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTSurfaceView.h b/Libraries/ART/ARTSurfaceView.h
index 9420ed07fbf107..e9bcd50293de84 100644
--- a/Libraries/ART/ARTSurfaceView.h
+++ b/Libraries/ART/ARTSurfaceView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTSurfaceView.m b/Libraries/ART/ARTSurfaceView.m
index 2d45083caea7c6..a5a2ff9135c5e3 100644
--- a/Libraries/ART/ARTSurfaceView.m
+++ b/Libraries/ART/ARTSurfaceView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTText.h b/Libraries/ART/ARTText.h
index cdf8393a137629..1431fc5e181c5e 100644
--- a/Libraries/ART/ARTText.h
+++ b/Libraries/ART/ARTText.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTText.m b/Libraries/ART/ARTText.m
index 0953c850dc293e..5bcebdf5559942 100644
--- a/Libraries/ART/ARTText.m
+++ b/Libraries/ART/ARTText.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ARTTextFrame.h b/Libraries/ART/ARTTextFrame.h
index 8ad06e0a01baed..1c02d3e04260b0 100644
--- a/Libraries/ART/ARTTextFrame.h
+++ b/Libraries/ART/ARTTextFrame.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTBrush.h b/Libraries/ART/Brushes/ARTBrush.h
index 95709e65f19bc9..f6e39e861f737c 100644
--- a/Libraries/ART/Brushes/ARTBrush.h
+++ b/Libraries/ART/Brushes/ARTBrush.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTBrush.m b/Libraries/ART/Brushes/ARTBrush.m
index 4ade2c221143f7..969ad5d7edb363 100644
--- a/Libraries/ART/Brushes/ARTBrush.m
+++ b/Libraries/ART/Brushes/ARTBrush.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTLinearGradient.h b/Libraries/ART/Brushes/ARTLinearGradient.h
index 8e6abbc5fbbfde..d289b192a51b1e 100644
--- a/Libraries/ART/Brushes/ARTLinearGradient.h
+++ b/Libraries/ART/Brushes/ARTLinearGradient.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTLinearGradient.m b/Libraries/ART/Brushes/ARTLinearGradient.m
index 1415a6ffcbc80f..20bd1af6233b4e 100644
--- a/Libraries/ART/Brushes/ARTLinearGradient.m
+++ b/Libraries/ART/Brushes/ARTLinearGradient.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTPattern.h b/Libraries/ART/Brushes/ARTPattern.h
index ce1767cc9b0bc8..11fa9354de29d0 100644
--- a/Libraries/ART/Brushes/ARTPattern.h
+++ b/Libraries/ART/Brushes/ARTPattern.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTPattern.m b/Libraries/ART/Brushes/ARTPattern.m
index 5c43586452d198..70e0bd25f367b7 100644
--- a/Libraries/ART/Brushes/ARTPattern.m
+++ b/Libraries/ART/Brushes/ARTPattern.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTRadialGradient.h b/Libraries/ART/Brushes/ARTRadialGradient.h
index d7895f8b74d084..98bec026385014 100644
--- a/Libraries/ART/Brushes/ARTRadialGradient.h
+++ b/Libraries/ART/Brushes/ARTRadialGradient.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTRadialGradient.m b/Libraries/ART/Brushes/ARTRadialGradient.m
index 19db9cb97b567a..c36f6ce57fc1fc 100644
--- a/Libraries/ART/Brushes/ARTRadialGradient.m
+++ b/Libraries/ART/Brushes/ARTRadialGradient.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTSolidColor.h b/Libraries/ART/Brushes/ARTSolidColor.h
index a16c2b915c72f8..9880cfd61675ff 100644
--- a/Libraries/ART/Brushes/ARTSolidColor.h
+++ b/Libraries/ART/Brushes/ARTSolidColor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/Brushes/ARTSolidColor.m b/Libraries/ART/Brushes/ARTSolidColor.m
index 096c4e043ed429..2ef02d43d98592 100644
--- a/Libraries/ART/Brushes/ARTSolidColor.m
+++ b/Libraries/ART/Brushes/ARTSolidColor.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/RCTConvert+ART.h b/Libraries/ART/RCTConvert+ART.h
index 1deb3c600176ab..ffc1deafe4e6e7 100644
--- a/Libraries/ART/RCTConvert+ART.h
+++ b/Libraries/ART/RCTConvert+ART.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/RCTConvert+ART.m b/Libraries/ART/RCTConvert+ART.m
index ea22d5426f18f9..3312e319436369 100644
--- a/Libraries/ART/RCTConvert+ART.m
+++ b/Libraries/ART/RCTConvert+ART.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ReactNativeART.js b/Libraries/ART/ReactNativeART.js
index 5a08e748c8382c..ae2d0e58a377ee 100644
--- a/Libraries/ART/ReactNativeART.js
+++ b/Libraries/ART/ReactNativeART.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -399,7 +399,19 @@ function extractStrokeJoin(strokeJoin) {
 // Note: ART has a notion of width and height on Shape but AFAIK it's a noop in
 // ReactART.
 
-class Shape extends React.Component {
+export type ShapeProps = {|
+  fill?: mixed,
+  stroke?: mixed,
+  strokeCap?: mixed,
+  strokeDash?: mixed,
+  strokeJoin?: mixed,
+  strokeWidth?: mixed,
+  x?: number,
+  y?: number,
+  opacity?: mixed,
+|};
+
+class Shape extends React.Component<ShapeProps> {
   render() {
     const props = this.props;
     const path = props.d || childrenAsString(props.children);
diff --git a/Libraries/ART/ViewManagers/ARTGroupManager.h b/Libraries/ART/ViewManagers/ARTGroupManager.h
index a35e09481be639..f518cf0efbdbb3 100644
--- a/Libraries/ART/ViewManagers/ARTGroupManager.h
+++ b/Libraries/ART/ViewManagers/ARTGroupManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTGroupManager.m b/Libraries/ART/ViewManagers/ARTGroupManager.m
index 2de0d0e5688739..9fb45d71bbdf4d 100644
--- a/Libraries/ART/ViewManagers/ARTGroupManager.m
+++ b/Libraries/ART/ViewManagers/ARTGroupManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTNodeManager.h b/Libraries/ART/ViewManagers/ARTNodeManager.h
index 3a8f99e7abdc7a..84ef8fb01cf3d4 100644
--- a/Libraries/ART/ViewManagers/ARTNodeManager.h
+++ b/Libraries/ART/ViewManagers/ARTNodeManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTNodeManager.m b/Libraries/ART/ViewManagers/ARTNodeManager.m
index 8e568ce6d8efd4..62680975ba1033 100644
--- a/Libraries/ART/ViewManagers/ARTNodeManager.m
+++ b/Libraries/ART/ViewManagers/ARTNodeManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTRenderableManager.h b/Libraries/ART/ViewManagers/ARTRenderableManager.h
index 1e4b554f0f79f7..781ed32f8f574d 100644
--- a/Libraries/ART/ViewManagers/ARTRenderableManager.h
+++ b/Libraries/ART/ViewManagers/ARTRenderableManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTRenderableManager.m b/Libraries/ART/ViewManagers/ARTRenderableManager.m
index a30841b50c1046..ad0264965391e5 100644
--- a/Libraries/ART/ViewManagers/ARTRenderableManager.m
+++ b/Libraries/ART/ViewManagers/ARTRenderableManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTShapeManager.h b/Libraries/ART/ViewManagers/ARTShapeManager.h
index 2f31b23a0eab10..cc514b159ee192 100644
--- a/Libraries/ART/ViewManagers/ARTShapeManager.h
+++ b/Libraries/ART/ViewManagers/ARTShapeManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTShapeManager.m b/Libraries/ART/ViewManagers/ARTShapeManager.m
index 57b603ca1a16b6..cb056e5d268877 100644
--- a/Libraries/ART/ViewManagers/ARTShapeManager.m
+++ b/Libraries/ART/ViewManagers/ARTShapeManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTSurfaceViewManager.h b/Libraries/ART/ViewManagers/ARTSurfaceViewManager.h
index 5915536bd6f917..36d5949a90ab4d 100644
--- a/Libraries/ART/ViewManagers/ARTSurfaceViewManager.h
+++ b/Libraries/ART/ViewManagers/ARTSurfaceViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTSurfaceViewManager.m b/Libraries/ART/ViewManagers/ARTSurfaceViewManager.m
index 54052a331d4585..1a03897937e860 100644
--- a/Libraries/ART/ViewManagers/ARTSurfaceViewManager.m
+++ b/Libraries/ART/ViewManagers/ARTSurfaceViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTTextManager.h b/Libraries/ART/ViewManagers/ARTTextManager.h
index c7d5304da3a3eb..343e669af7553c 100644
--- a/Libraries/ART/ViewManagers/ARTTextManager.h
+++ b/Libraries/ART/ViewManagers/ARTTextManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ART/ViewManagers/ARTTextManager.m b/Libraries/ART/ViewManagers/ARTTextManager.m
index ac6688c3d925b9..35c53811fd9509 100644
--- a/Libraries/ART/ViewManagers/ARTTextManager.m
+++ b/Libraries/ART/ViewManagers/ARTTextManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ActionSheetIOS/ActionSheetIOS.js b/Libraries/ActionSheetIOS/ActionSheetIOS.js
index b135a23e5fc998..ea2e01f9dd9b8a 100644
--- a/Libraries/ActionSheetIOS/ActionSheetIOS.js
+++ b/Libraries/ActionSheetIOS/ActionSheetIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ActionSheetIOS/RCTActionSheetManager.h b/Libraries/ActionSheetIOS/RCTActionSheetManager.h
index 097a663f07f21b..96028ee549ab15 100644
--- a/Libraries/ActionSheetIOS/RCTActionSheetManager.h
+++ b/Libraries/ActionSheetIOS/RCTActionSheetManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ActionSheetIOS/RCTActionSheetManager.m b/Libraries/ActionSheetIOS/RCTActionSheetManager.m
index 958d1b2062a016..2376557c338016 100644
--- a/Libraries/ActionSheetIOS/RCTActionSheetManager.m
+++ b/Libraries/ActionSheetIOS/RCTActionSheetManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Alert/Alert.js b/Libraries/Alert/Alert.js
index aafeaa7ea33d59..d002145b9b6067 100644
--- a/Libraries/Alert/Alert.js
+++ b/Libraries/Alert/Alert.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Alert/AlertIOS.js b/Libraries/Alert/AlertIOS.js
index 1998865b2d597c..b7e1a0d73b7b59 100644
--- a/Libraries/Alert/AlertIOS.js
+++ b/Libraries/Alert/AlertIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Alert/RCTAlertManager.android.js b/Libraries/Alert/RCTAlertManager.android.js
index 2e510add8ddaca..b16298f01ff3f2 100644
--- a/Libraries/Alert/RCTAlertManager.android.js
+++ b/Libraries/Alert/RCTAlertManager.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Alert/RCTAlertManager.ios.js b/Libraries/Alert/RCTAlertManager.ios.js
index dd561eec3a13f7..a300de65521d97 100644
--- a/Libraries/Alert/RCTAlertManager.ios.js
+++ b/Libraries/Alert/RCTAlertManager.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/examples/style.css b/Libraries/Animated/examples/style.css
index c188ad79b07fd2..24191a56b985ca 100644
--- a/Libraries/Animated/examples/style.css
+++ b/Libraries/Animated/examples/style.css
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 html, h1, h2 {
  font-family: 'Roboto', sans-serif;
  font-weight: 300;
diff --git a/Libraries/Animated/release/.gitignore b/Libraries/Animated/release/.gitignore
new file mode 100644
index 00000000000000..4c422f3bc92283
--- /dev/null
+++ b/Libraries/Animated/release/.gitignore
@@ -0,0 +1,3 @@
+/lib/
+/dist/
+/node_modules/
diff --git a/Libraries/Animated/release/gulpfile.js b/Libraries/Animated/release/gulpfile.js
index b5599e9365fef3..291f3236303d87 100644
--- a/Libraries/Animated/release/gulpfile.js
+++ b/Libraries/Animated/release/gulpfile.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/release/package.json b/Libraries/Animated/release/package.json
index 49f6a2081ffd14..cccaf09d35f896 100644
--- a/Libraries/Animated/release/package.json
+++ b/Libraries/Animated/release/package.json
@@ -10,7 +10,7 @@
   "license": "MIT",
   "main": "Animated.js",
   "dependencies": {
-    "fbjs": "0.8.17"
+    "fbjs": "^1.0.0"
   },
   "scripts": {
     "build": "gulp"
@@ -19,7 +19,7 @@
     "babel-core": "^5.8.25",
     "babel-loader": "^5.3.2",
     "del": "^1.2.0",
-    "fbjs-scripts": "^0.2.0",
+    "fbjs-scripts": "^1.0.0",
     "gulp": "^3.9.0",
     "gulp-babel": "^5.1.0",
     "gulp-derequire": "^2.1.0",
diff --git a/Libraries/Animated/src/Animated.js b/Libraries/Animated/src/Animated.js
index 1c60f253f903de..f07432c03ce159 100644
--- a/Libraries/Animated/src/Animated.js
+++ b/Libraries/Animated/src/Animated.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,19 +11,25 @@
 'use strict';
 
 const AnimatedImplementation = require('AnimatedImplementation');
-const FlatList = require('FlatList');
-const Image = require('Image');
-const ScrollView = require('ScrollView');
-const SectionList = require('SectionList');
-const Text = require('Text');
-const View = require('View');
 
 module.exports = {
+  get FlatList() {
+    return require('AnimatedFlatList');
+  },
+  get Image() {
+    return require('AnimatedImage');
+  },
+  get ScrollView() {
+    return require('AnimatedScrollView');
+  },
+  get SectionList() {
+    return require('AnimatedSectionList');
+  },
+  get Text() {
+    return require('AnimatedText');
+  },
+  get View() {
+    return require('AnimatedView');
+  },
   ...AnimatedImplementation,
-  View: AnimatedImplementation.createAnimatedComponent(View),
-  Text: AnimatedImplementation.createAnimatedComponent(Text),
-  Image: AnimatedImplementation.createAnimatedComponent(Image),
-  ScrollView: AnimatedImplementation.createAnimatedComponent(ScrollView),
-  FlatList: AnimatedImplementation.createAnimatedComponent(FlatList),
-  SectionList: AnimatedImplementation.createAnimatedComponent(SectionList),
 };
diff --git a/Libraries/Animated/src/AnimatedEvent.js b/Libraries/Animated/src/AnimatedEvent.js
index 084632737c661d..c4d1b88290e5cb 100644
--- a/Libraries/Animated/src/AnimatedEvent.js
+++ b/Libraries/Animated/src/AnimatedEvent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/AnimatedImplementation.js b/Libraries/Animated/src/AnimatedImplementation.js
index 2c1ce431d10686..57e34ce6e9eee3 100644
--- a/Libraries/Animated/src/AnimatedImplementation.js
+++ b/Libraries/Animated/src/AnimatedImplementation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/AnimatedWeb.js b/Libraries/Animated/src/AnimatedWeb.js
index 5bf1fdb0e184a0..cf105d4af58a6c 100644
--- a/Libraries/Animated/src/AnimatedWeb.js
+++ b/Libraries/Animated/src/AnimatedWeb.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/Easing.js b/Libraries/Animated/src/Easing.js
index 94fb865882c040..9932038e6329fd 100644
--- a/Libraries/Animated/src/Easing.js
+++ b/Libraries/Animated/src/Easing.js
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict
  */
 
 'use strict';
@@ -175,10 +175,7 @@ class Easing {
    *
    * - http://tiny.cc/back_default (s = 1.70158, default)
    */
-  static back(s: number): (t: number) => number {
-    if (s === undefined) {
-      s = 1.70158;
-    }
+  static back(s: number = 1.70158): (t: number) => number {
     return t => t * t * ((s + 1) * t - s);
   }
 
@@ -193,17 +190,17 @@ class Easing {
     }
 
     if (t < 2 / 2.75) {
-      t -= 1.5 / 2.75;
-      return 7.5625 * t * t + 0.75;
+      const t2 = t - 1.5 / 2.75;
+      return 7.5625 * t2 * t2 + 0.75;
     }
 
     if (t < 2.5 / 2.75) {
-      t -= 2.25 / 2.75;
-      return 7.5625 * t * t + 0.9375;
+      const t2 = t - 2.25 / 2.75;
+      return 7.5625 * t2 * t2 + 0.9375;
     }
 
-    t -= 2.625 / 2.75;
-    return 7.5625 * t * t + 0.984375;
+    const t2 = t - 2.625 / 2.75;
+    return 7.5625 * t2 * t2 + 0.984375;
   }
 
   /**
diff --git a/Libraries/Animated/src/NativeAnimatedHelper.js b/Libraries/Animated/src/NativeAnimatedHelper.js
index 3142ea24c084d1..ad4ede6f46567d 100644
--- a/Libraries/Animated/src/NativeAnimatedHelper.js
+++ b/Libraries/Animated/src/NativeAnimatedHelper.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -153,6 +153,7 @@ const STYLES_WHITELIST = {
   borderTopLeftRadius: true,
   borderTopRightRadius: true,
   borderTopStartRadius: true,
+  elevation: true,
   /* ios styles */
   shadowOpacity: true,
   shadowRadius: true,
@@ -259,6 +260,22 @@ function shouldUseNativeDriver(config: AnimationConfig | EventConfig): boolean {
   return config.useNativeDriver || false;
 }
 
+function transformDataType(value: any): number {
+  // Change the string type to number type so we can reuse the same logic in
+  // iOS and Android platform
+  if (typeof value !== 'string') {
+    return value;
+  }
+  if (/deg$/.test(value)) {
+    const degrees = parseFloat(value) || 0;
+    const radians = (degrees * Math.PI) / 180.0;
+    return radians;
+  } else {
+    // Assume radians
+    return parseFloat(value) || 0;
+  }
+}
+
 module.exports = {
   API,
   addWhitelistedStyleProp,
@@ -271,6 +288,7 @@ module.exports = {
   generateNewAnimationId,
   assertNativeAnimatedModule,
   shouldUseNativeDriver,
+  transformDataType,
   get nativeEventEmitter() {
     if (!nativeEventEmitter) {
       nativeEventEmitter = new NativeEventEmitter(NativeAnimatedModule);
diff --git a/Libraries/Animated/src/SpringConfig.js b/Libraries/Animated/src/SpringConfig.js
index 456af9c40ec1ae..e226a3173a1902 100644
--- a/Libraries/Animated/src/SpringConfig.js
+++ b/Libraries/Animated/src/SpringConfig.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/__tests__/Animated-test.js b/Libraries/Animated/src/__tests__/Animated-test.js
index 7dddf157d0dea0..930d8a020f2bff 100644
--- a/Libraries/Animated/src/__tests__/Animated-test.js
+++ b/Libraries/Animated/src/__tests__/Animated-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/__tests__/AnimatedNative-test.js b/Libraries/Animated/src/__tests__/AnimatedNative-test.js
index f9f3836835fc47..fb6257f15d8183 100644
--- a/Libraries/Animated/src/__tests__/AnimatedNative-test.js
+++ b/Libraries/Animated/src/__tests__/AnimatedNative-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/__tests__/Easing-test.js b/Libraries/Animated/src/__tests__/Easing-test.js
index 0284f3f0b697ef..1cb6152538fec2 100644
--- a/Libraries/Animated/src/__tests__/Easing-test.js
+++ b/Libraries/Animated/src/__tests__/Easing-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/__tests__/Interpolation-test.js b/Libraries/Animated/src/__tests__/Interpolation-test.js
index 5515f09bacd0bc..6b77584b00d8ab 100644
--- a/Libraries/Animated/src/__tests__/Interpolation-test.js
+++ b/Libraries/Animated/src/__tests__/Interpolation-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/__tests__/bezier-test.js b/Libraries/Animated/src/__tests__/bezier-test.js
index e9f00a7d214878..360d6262f91144 100644
--- a/Libraries/Animated/src/__tests__/bezier-test.js
+++ b/Libraries/Animated/src/__tests__/bezier-test.js
@@ -1,4 +1,9 @@
 /**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
  * BezierEasing - use bezier curve for transition easing function
  * https://github.com/gre/bezier-easing
  *
diff --git a/Libraries/Animated/src/animations/Animation.js b/Libraries/Animated/src/animations/Animation.js
index b4e38016dba557..b34ac9555a1eca 100644
--- a/Libraries/Animated/src/animations/Animation.js
+++ b/Libraries/Animated/src/animations/Animation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/animations/DecayAnimation.js b/Libraries/Animated/src/animations/DecayAnimation.js
index a6fe05bb3f6343..0e09b6144d30e1 100644
--- a/Libraries/Animated/src/animations/DecayAnimation.js
+++ b/Libraries/Animated/src/animations/DecayAnimation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/animations/SpringAnimation.js b/Libraries/Animated/src/animations/SpringAnimation.js
index a0f38d3b024e5c..a44c181eb25dfe 100644
--- a/Libraries/Animated/src/animations/SpringAnimation.js
+++ b/Libraries/Animated/src/animations/SpringAnimation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/animations/TimingAnimation.js b/Libraries/Animated/src/animations/TimingAnimation.js
index 694a52c0a39f7b..61ad74e9e1f5f0 100644
--- a/Libraries/Animated/src/animations/TimingAnimation.js
+++ b/Libraries/Animated/src/animations/TimingAnimation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/bezier.js b/Libraries/Animated/src/bezier.js
index 15f8e2dc1b686f..727872b848aacd 100644
--- a/Libraries/Animated/src/bezier.js
+++ b/Libraries/Animated/src/bezier.js
@@ -1,8 +1,13 @@
 /**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
  * BezierEasing - use bezier curve for transition easing function
  * https://github.com/gre/bezier-easing
  *
- * @flow
+ * @flow strict
  * @format
  * @copyright 2014-2015 Gaëtan Renaudeau. MIT License.
  */
@@ -40,10 +45,12 @@ function getSlope(aT, aA1, aA2) {
   return 3.0 * A(aA1, aA2) * aT * aT + 2.0 * B(aA1, aA2) * aT + C(aA1);
 }
 
-function binarySubdivide(aX, aA, aB, mX1, mX2) {
+function binarySubdivide(aX, _aA, _aB, mX1, mX2) {
   let currentX,
     currentT,
-    i = 0;
+    i = 0,
+    aA = _aA,
+    aB = _aB;
   do {
     currentT = aA + (aB - aA) / 2.0;
     currentX = calcBezier(currentT, mX1, mX2) - aX;
@@ -59,7 +66,8 @@ function binarySubdivide(aX, aA, aB, mX1, mX2) {
   return currentT;
 }
 
-function newtonRaphsonIterate(aX, aGuessT, mX1, mX2) {
+function newtonRaphsonIterate(aX, _aGuessT, mX1, mX2) {
+  let aGuessT = _aGuessT;
   for (let i = 0; i < NEWTON_ITERATIONS; ++i) {
     const currentSlope = getSlope(aGuessT, mX1, mX2);
     if (currentSlope === 0.0) {
@@ -77,7 +85,7 @@ module.exports = function bezier(
   mX2: number,
   mY2: number,
 ) {
-  if (!(0 <= mX1 && mX1 <= 1 && 0 <= mX2 && mX2 <= 1)) {
+  if (!(mX1 >= 0 && mX1 <= 1 && mX2 >= 0 && mX2 <= 1)) {
     throw new Error('bezier x values must be in [0, 1] range');
   }
 
diff --git a/Libraries/Animated/src/components/AnimatedFlatList.js b/Libraries/Animated/src/components/AnimatedFlatList.js
new file mode 100644
index 00000000000000..af69ff3674769e
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedFlatList.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const FlatList = require('FlatList');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(FlatList);
diff --git a/Libraries/Animated/src/components/AnimatedImage.js b/Libraries/Animated/src/components/AnimatedImage.js
new file mode 100644
index 00000000000000..e7d0bc4429513a
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedImage.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const Image = require('Image');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(Image);
diff --git a/Libraries/Animated/src/components/AnimatedScrollView.js b/Libraries/Animated/src/components/AnimatedScrollView.js
new file mode 100644
index 00000000000000..195f17b7005ad7
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedScrollView.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const ScrollView = require('ScrollView');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(ScrollView);
diff --git a/Libraries/Animated/src/components/AnimatedSectionList.js b/Libraries/Animated/src/components/AnimatedSectionList.js
new file mode 100644
index 00000000000000..482e203abac637
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedSectionList.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const SectionList = require('SectionList');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(SectionList);
diff --git a/Libraries/Animated/src/components/AnimatedText.js b/Libraries/Animated/src/components/AnimatedText.js
new file mode 100644
index 00000000000000..870ba144b10207
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedText.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const Text = require('Text');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(Text);
diff --git a/Libraries/Animated/src/components/AnimatedView.js b/Libraries/Animated/src/components/AnimatedView.js
new file mode 100644
index 00000000000000..396760d999485f
--- /dev/null
+++ b/Libraries/Animated/src/components/AnimatedView.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const View = require('View');
+
+const createAnimatedComponent = require('createAnimatedComponent');
+
+module.exports = createAnimatedComponent(View);
diff --git a/Libraries/Animated/src/createAnimatedComponent.js b/Libraries/Animated/src/createAnimatedComponent.js
index a4177d65be0e40..d705d6eebaa8be 100644
--- a/Libraries/Animated/src/createAnimatedComponent.js
+++ b/Libraries/Animated/src/createAnimatedComponent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 const {AnimatedEvent} = require('./AnimatedEvent');
 const AnimatedProps = require('./nodes/AnimatedProps');
 const React = require('React');
-const ViewStylePropTypes = require('ViewStylePropTypes');
+const DeprecatedViewStylePropTypes = require('DeprecatedViewStylePropTypes');
 
 const invariant = require('fbjs/lib/invariant');
 
@@ -184,7 +184,7 @@ function createAnimatedComponent(Component: any): any {
         return;
       }
 
-      for (const key in ViewStylePropTypes) {
+      for (const key in DeprecatedViewStylePropTypes) {
         if (!propTypes[key] && props[key] !== undefined) {
           console.warn(
             'You are setting the style `{ ' +
diff --git a/Libraries/Animated/src/nodes/AnimatedAddition.js b/Libraries/Animated/src/nodes/AnimatedAddition.js
index 60713da500213c..f3d6b55167f404 100644
--- a/Libraries/Animated/src/nodes/AnimatedAddition.js
+++ b/Libraries/Animated/src/nodes/AnimatedAddition.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedDiffClamp.js b/Libraries/Animated/src/nodes/AnimatedDiffClamp.js
index 4219eccfb377ff..3b657ef75ee23f 100644
--- a/Libraries/Animated/src/nodes/AnimatedDiffClamp.js
+++ b/Libraries/Animated/src/nodes/AnimatedDiffClamp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedDivision.js b/Libraries/Animated/src/nodes/AnimatedDivision.js
index 3498d322211f64..9efb4214dfa41f 100644
--- a/Libraries/Animated/src/nodes/AnimatedDivision.js
+++ b/Libraries/Animated/src/nodes/AnimatedDivision.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedInterpolation.js b/Libraries/Animated/src/nodes/AnimatedInterpolation.js
index c332f864f2fac6..1f94ee71c78441 100644
--- a/Libraries/Animated/src/nodes/AnimatedInterpolation.js
+++ b/Libraries/Animated/src/nodes/AnimatedInterpolation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -350,24 +350,7 @@ class AnimatedInterpolation extends AnimatedWithChildren {
   }
 
   __transformDataType(range: Array<any>) {
-    // Change the string array type to number array
-    // So we can reuse the same logic in iOS and Android platform
-    /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.70 was deployed. To see the error delete this
-     * comment and run Flow. */
-    return range.map(function(value) {
-      if (typeof value !== 'string') {
-        return value;
-      }
-      if (/deg$/.test(value)) {
-        const degrees = parseFloat(value) || 0;
-        const radians = (degrees * Math.PI) / 180.0;
-        return radians;
-      } else {
-        // Assume radians
-        return parseFloat(value) || 0;
-      }
-    });
+    return range.map(NativeAnimatedHelper.transformDataType);
   }
 
   __getNativeConfig(): any {
diff --git a/Libraries/Animated/src/nodes/AnimatedModulo.js b/Libraries/Animated/src/nodes/AnimatedModulo.js
index a3968566e9a2c4..a0cad545101ccb 100644
--- a/Libraries/Animated/src/nodes/AnimatedModulo.js
+++ b/Libraries/Animated/src/nodes/AnimatedModulo.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedMultiplication.js b/Libraries/Animated/src/nodes/AnimatedMultiplication.js
index 889f530c76baee..b031ba613dc805 100644
--- a/Libraries/Animated/src/nodes/AnimatedMultiplication.js
+++ b/Libraries/Animated/src/nodes/AnimatedMultiplication.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedNode.js b/Libraries/Animated/src/nodes/AnimatedNode.js
index 34e010a62f8c45..94532087d201eb 100644
--- a/Libraries/Animated/src/nodes/AnimatedNode.js
+++ b/Libraries/Animated/src/nodes/AnimatedNode.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedProps.js b/Libraries/Animated/src/nodes/AnimatedProps.js
index 75c9c25487135a..92c5012075fc85 100644
--- a/Libraries/Animated/src/nodes/AnimatedProps.js
+++ b/Libraries/Animated/src/nodes/AnimatedProps.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedStyle.js b/Libraries/Animated/src/nodes/AnimatedStyle.js
index 89d959f487dfcd..e1f3d332a2280f 100644
--- a/Libraries/Animated/src/nodes/AnimatedStyle.js
+++ b/Libraries/Animated/src/nodes/AnimatedStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedSubtraction.js b/Libraries/Animated/src/nodes/AnimatedSubtraction.js
index 3fe8bbb6920703..c79860a4095074 100644
--- a/Libraries/Animated/src/nodes/AnimatedSubtraction.js
+++ b/Libraries/Animated/src/nodes/AnimatedSubtraction.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedTracking.js b/Libraries/Animated/src/nodes/AnimatedTracking.js
index 699da167c7b2c7..284d5b39af7a0b 100644
--- a/Libraries/Animated/src/nodes/AnimatedTracking.js
+++ b/Libraries/Animated/src/nodes/AnimatedTracking.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedTransform.js b/Libraries/Animated/src/nodes/AnimatedTransform.js
index 537326e58ff7c5..e3b3034675055c 100644
--- a/Libraries/Animated/src/nodes/AnimatedTransform.js
+++ b/Libraries/Animated/src/nodes/AnimatedTransform.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -103,7 +103,7 @@ class AnimatedTransform extends AnimatedWithChildren {
           transConfigs.push({
             type: 'static',
             property: key,
-            value,
+            value: NativeAnimatedHelper.transformDataType(value),
           });
         }
       }
diff --git a/Libraries/Animated/src/nodes/AnimatedValue.js b/Libraries/Animated/src/nodes/AnimatedValue.js
index a3fb3a325b838e..e896f660000ab2 100644
--- a/Libraries/Animated/src/nodes/AnimatedValue.js
+++ b/Libraries/Animated/src/nodes/AnimatedValue.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 'use strict';
 
 const AnimatedInterpolation = require('./AnimatedInterpolation');
-const AnimatedNode = require('./AnimatedNode');
 const AnimatedWithChildren = require('./AnimatedWithChildren');
 const InteractionManager = require('InteractionManager');
 const NativeAnimatedHelper = require('../NativeAnimatedHelper');
diff --git a/Libraries/Animated/src/nodes/AnimatedValueXY.js b/Libraries/Animated/src/nodes/AnimatedValueXY.js
index 3de5bbaf9d3a04..a8168c591039ad 100644
--- a/Libraries/Animated/src/nodes/AnimatedValueXY.js
+++ b/Libraries/Animated/src/nodes/AnimatedValueXY.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/nodes/AnimatedWithChildren.js b/Libraries/Animated/src/nodes/AnimatedWithChildren.js
index 01189a482fae52..3940c4ae206082 100644
--- a/Libraries/Animated/src/nodes/AnimatedWithChildren.js
+++ b/Libraries/Animated/src/nodes/AnimatedWithChildren.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/polyfills/InteractionManager.js b/Libraries/Animated/src/polyfills/InteractionManager.js
index 5e82aaaa544cdb..c2247c762a3da0 100644
--- a/Libraries/Animated/src/polyfills/InteractionManager.js
+++ b/Libraries/Animated/src/polyfills/InteractionManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/polyfills/Set.js b/Libraries/Animated/src/polyfills/Set.js
index c88278bda1cb38..39205b8f9f9920 100644
--- a/Libraries/Animated/src/polyfills/Set.js
+++ b/Libraries/Animated/src/polyfills/Set.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Animated/src/polyfills/flattenStyle.js b/Libraries/Animated/src/polyfills/flattenStyle.js
index 21907b235f97f5..b50057af28435f 100644
--- a/Libraries/Animated/src/polyfills/flattenStyle.js
+++ b/Libraries/Animated/src/polyfills/flattenStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/AppState/AppState.js b/Libraries/AppState/AppState.js
index 554689f11ad680..8918225ec92365 100644
--- a/Libraries/AppState/AppState.js
+++ b/Libraries/AppState/AppState.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/BatchedBridge.js b/Libraries/BatchedBridge/BatchedBridge.js
index 1c5bb4f4c8f516..663b0051457e24 100644
--- a/Libraries/BatchedBridge/BatchedBridge.js
+++ b/Libraries/BatchedBridge/BatchedBridge.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/MessageQueue.js b/Libraries/BatchedBridge/MessageQueue.js
index c9b750df9efdc8..a7f1f5a3a5aacd 100644
--- a/Libraries/BatchedBridge/MessageQueue.js
+++ b/Libraries/BatchedBridge/MessageQueue.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -60,7 +60,7 @@ class MessageQueue {
     this._failureCallbacks = {};
     this._callID = 0;
     this._lastFlush = 0;
-    this._eventLoopStartTime = new Date().getTime();
+    this._eventLoopStartTime = Date.now();
     this._immediatesCallback = null;
 
     if (__DEV__) {
@@ -141,7 +141,7 @@ class MessageQueue {
   }
 
   getEventLoopRunningTime() {
-    return new Date().getTime() - this._eventLoopStartTime;
+    return Date.now() - this._eventLoopStartTime;
   }
 
   registerCallableModule(name: string, module: Object) {
@@ -213,11 +213,13 @@ class MessageQueue {
           t === 'undefined' ||
           t === 'null' ||
           t === 'boolean' ||
-          t === 'number' ||
           t === 'string'
         ) {
           return true;
         }
+        if (t === 'number') {
+          return isFinite(val);
+        }
         if (t === 'function' || t !== 'object') {
           return false;
         }
@@ -232,10 +234,25 @@ class MessageQueue {
         return true;
       };
 
+      // Replacement allows normally non-JSON-convertible values to be
+      // seen.  There is ambiguity with string values, but in context,
+      // it should at least be a strong hint.
+      const replacer = (key, val) => {
+        const t = typeof val;
+        if (t === 'function') {
+          return '<<Function ' + val.name + '>>';
+        } else if (t === 'number' && !isFinite(val)) {
+          return '<<' + val.toString() + '>>';
+        } else {
+          return val;
+        }
+      };
+
+      // Note that JSON.stringify
       invariant(
         isValidArgument(params),
         '%s is not usable as a native method argument',
-        params,
+        JSON.stringify(params, replacer),
       );
 
       // The params object should not be mutated after being queued
@@ -243,7 +260,7 @@ class MessageQueue {
     }
     this._queue[PARAMS].push(params);
 
-    const now = new Date().getTime();
+    const now = Date.now();
     if (
       global.nativeFlushQueueImmediate &&
       now - this._lastFlush >= MIN_TIME_BETWEEN_FLUSHES_MS
@@ -323,7 +340,7 @@ class MessageQueue {
   }
 
   __callFunction(module: string, method: string, args: any[]): any {
-    this._lastFlush = new Date().getTime();
+    this._lastFlush = Date.now();
     this._eventLoopStartTime = this._lastFlush;
     if (__DEV__ || this.__spy) {
       Systrace.beginEvent(`${module}.${method}(${stringifySafe(args)})`);
@@ -352,7 +369,7 @@ class MessageQueue {
   }
 
   __invokeCallback(cbID: number, args: any[]) {
-    this._lastFlush = new Date().getTime();
+    this._lastFlush = Date.now();
     this._eventLoopStartTime = this._lastFlush;
 
     // The rightmost bit of cbID indicates fail (0) or success (1), the other bits are the callID shifted left.
diff --git a/Libraries/BatchedBridge/NativeModules.js b/Libraries/BatchedBridge/NativeModules.js
index 61dd5bff1e61df..203cce932e0bae 100644
--- a/Libraries/BatchedBridge/NativeModules.js
+++ b/Libraries/BatchedBridge/NativeModules.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/__mocks__/MessageQueueTestConfig.js b/Libraries/BatchedBridge/__mocks__/MessageQueueTestConfig.js
index 3f9ae5f0a4855c..bb50f5d2fa7b50 100644
--- a/Libraries/BatchedBridge/__mocks__/MessageQueueTestConfig.js
+++ b/Libraries/BatchedBridge/__mocks__/MessageQueueTestConfig.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js b/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
index 05168a6b570094..37425cd7652706 100644
--- a/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
+++ b/Libraries/BatchedBridge/__mocks__/MessageQueueTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/__tests__/MessageQueue-test.js b/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
index 555a9e2053be33..77cd6948124487 100644
--- a/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
+++ b/Libraries/BatchedBridge/__tests__/MessageQueue-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BatchedBridge/__tests__/NativeModules-test.js b/Libraries/BatchedBridge/__tests__/NativeModules-test.js
index 9702146b719090..821c3261a4169a 100644
--- a/Libraries/BatchedBridge/__tests__/NativeModules-test.js
+++ b/Libraries/BatchedBridge/__tests__/NativeModules-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,7 @@
 
 'use strict';
 
-jest
-  .enableAutomock()
-  .unmock('BatchedBridge')
-  .unmock('defineLazyObjectProperty')
-  .unmock('MessageQueue')
-  .unmock('NativeModules');
+jest.unmock('NativeModules');
 
 let BatchedBridge;
 let NativeModules;
diff --git a/Libraries/Blob/Blob.js b/Libraries/Blob/Blob.js
index 0e36b07f7f4e5a..c7e013dfa0b530 100644
--- a/Libraries/Blob/Blob.js
+++ b/Libraries/Blob/Blob.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/BlobManager.js b/Libraries/Blob/BlobManager.js
index 6677019411aeac..460980bb5b21ef 100644
--- a/Libraries/Blob/BlobManager.js
+++ b/Libraries/Blob/BlobManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/BlobRegistry.js b/Libraries/Blob/BlobRegistry.js
index 445fe6bb855835..cfd0475a53ea07 100644
--- a/Libraries/Blob/BlobRegistry.js
+++ b/Libraries/Blob/BlobRegistry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/BlobTypes.js b/Libraries/Blob/BlobTypes.js
index 2e5be53e19615f..de105d2a6904d3 100644
--- a/Libraries/Blob/BlobTypes.js
+++ b/Libraries/Blob/BlobTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/File.js b/Libraries/Blob/File.js
index 2f57183cdb3f19..fcad0d0bc1415c 100644
--- a/Libraries/Blob/File.js
+++ b/Libraries/Blob/File.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/FileReader.js b/Libraries/Blob/FileReader.js
index 309e4577a455f8..b9181ed9aaa34b 100644
--- a/Libraries/Blob/FileReader.js
+++ b/Libraries/Blob/FileReader.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/RCTBlobManager.h b/Libraries/Blob/RCTBlobManager.h
index 24b589ef987ae5..1d5750799e3d29 100755
--- a/Libraries/Blob/RCTBlobManager.h
+++ b/Libraries/Blob/RCTBlobManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/RCTBlobManager.mm b/Libraries/Blob/RCTBlobManager.mm
index 7c0cbb8673f064..99084d9aba3b53 100755
--- a/Libraries/Blob/RCTBlobManager.mm
+++ b/Libraries/Blob/RCTBlobManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/RCTFileReaderModule.h b/Libraries/Blob/RCTFileReaderModule.h
index 72d224b0d968cb..89c018381bcd32 100644
--- a/Libraries/Blob/RCTFileReaderModule.h
+++ b/Libraries/Blob/RCTFileReaderModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/RCTFileReaderModule.m b/Libraries/Blob/RCTFileReaderModule.m
index 5059e0b84180ee..26b33f63e471a9 100644
--- a/Libraries/Blob/RCTFileReaderModule.m
+++ b/Libraries/Blob/RCTFileReaderModule.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/URL.js b/Libraries/Blob/URL.js
index de59323c784071..36dbe0ffa02b50 100644
--- a/Libraries/Blob/URL.js
+++ b/Libraries/Blob/URL.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__mocks__/BlobModule.js b/Libraries/Blob/__mocks__/BlobModule.js
index e904d2929dd74b..3a1cb8eda6174b 100644
--- a/Libraries/Blob/__mocks__/BlobModule.js
+++ b/Libraries/Blob/__mocks__/BlobModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__mocks__/FileReaderModule.js b/Libraries/Blob/__mocks__/FileReaderModule.js
index 0f35aa89ace07e..da687eca470b1d 100644
--- a/Libraries/Blob/__mocks__/FileReaderModule.js
+++ b/Libraries/Blob/__mocks__/FileReaderModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__tests__/Blob-test.js b/Libraries/Blob/__tests__/Blob-test.js
index 47bf5fee7c1361..7600c0c967825c 100644
--- a/Libraries/Blob/__tests__/Blob-test.js
+++ b/Libraries/Blob/__tests__/Blob-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__tests__/BlobManager-test.js b/Libraries/Blob/__tests__/BlobManager-test.js
index c141d42f16334c..73ad2a9de1103f 100644
--- a/Libraries/Blob/__tests__/BlobManager-test.js
+++ b/Libraries/Blob/__tests__/BlobManager-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__tests__/File-test.js b/Libraries/Blob/__tests__/File-test.js
index c10f90c18766ae..11b25116809a5d 100644
--- a/Libraries/Blob/__tests__/File-test.js
+++ b/Libraries/Blob/__tests__/File-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Blob/__tests__/FileReader-test.js b/Libraries/Blob/__tests__/FileReader-test.js
index b2237550bf7184..a375c3ef374710 100644
--- a/Libraries/Blob/__tests__/FileReader-test.js
+++ b/Libraries/Blob/__tests__/FileReader-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BugReporting/BugReporting.js b/Libraries/BugReporting/BugReporting.js
index 6c63b6a1eebf98..1623b71741f059 100644
--- a/Libraries/BugReporting/BugReporting.js
+++ b/Libraries/BugReporting/BugReporting.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,6 @@
 'use strict';
 
 const RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
-const Map = require('Map');
 const infoLog = require('infoLog');
 
 import type EmitterSubscription from 'EmitterSubscription';
diff --git a/Libraries/BugReporting/dumpReactTree.js b/Libraries/BugReporting/dumpReactTree.js
index ead8f4bdd76c32..2ef17ecf034784 100644
--- a/Libraries/BugReporting/dumpReactTree.js
+++ b/Libraries/BugReporting/dumpReactTree.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/BugReporting/getReactData.js b/Libraries/BugReporting/getReactData.js
index b4d1c4a32fd557..cc9bc55f0cc394 100644
--- a/Libraries/BugReporting/getReactData.js
+++ b/Libraries/BugReporting/getReactData.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/CameraRoll.js b/Libraries/CameraRoll/CameraRoll.js
index f2a4f65aa80933..ad8db27937aa46 100644
--- a/Libraries/CameraRoll/CameraRoll.js
+++ b/Libraries/CameraRoll/CameraRoll.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,7 +13,7 @@ const PropTypes = require('prop-types');
 const {checkPropTypes} = PropTypes;
 const RCTCameraRollManager = require('NativeModules').CameraRollManager;
 
-const createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
+const deprecatedCreateStrictShapeTypeChecker = require('deprecatedCreateStrictShapeTypeChecker');
 const invariant = require('fbjs/lib/invariant');
 
 const GROUP_TYPES_OPTIONS = {
@@ -32,10 +32,12 @@ const ASSET_TYPE_OPTIONS = {
   Photos: 'Photos',
 };
 
-type GetPhotosParams = {
+export type GroupTypes = $Keys<typeof GROUP_TYPES_OPTIONS>;
+
+export type GetPhotosParams = {
   first: number,
   after?: string,
-  groupTypes?: $Keys<typeof GROUP_TYPES_OPTIONS>,
+  groupTypes?: GroupTypes,
   groupName?: string,
   assetType?: $Keys<typeof ASSET_TYPE_OPTIONS>,
   mimeTypes?: Array<string>,
@@ -44,7 +46,7 @@ type GetPhotosParams = {
 /**
  * Shape of the param arg for the `getPhotos` function.
  */
-const getPhotosParamChecker = createStrictShapeTypeChecker({
+const getPhotosParamChecker = deprecatedCreateStrictShapeTypeChecker({
   /**
    * The number of photos wanted in reverse order of the photo application
    * (i.e. most recent first for SavedPhotos).
@@ -79,48 +81,51 @@ const getPhotosParamChecker = createStrictShapeTypeChecker({
   mimeTypes: PropTypes.arrayOf(PropTypes.string),
 });
 
-type GetPhotosReturn = Promise<{
-  edges: Array<{
-    node: {
-      type: string,
-      group_name: string,
-      image: {
-        uri: string,
-        height: number,
-        width: number,
-        isStored?: boolean,
-        playableDuration: number,
-      },
-      timestamp: number,
-      location?: {
-        latitude?: number,
-        longitude?: number,
-        altitude?: number,
-        heading?: number,
-        speed?: number,
-      },
+export type PhotoIdentifier = {
+  node: {
+    type: string,
+    group_name: string,
+    image: {
+      filename: string,
+      uri: string,
+      height: number,
+      width: number,
+      isStored?: boolean,
+      playableDuration: number,
+    },
+    timestamp: number,
+    location?: {
+      latitude?: number,
+      longitude?: number,
+      altitude?: number,
+      heading?: number,
+      speed?: number,
     },
-  }>,
+  },
+};
+
+export type PhotoIdentifiersPage = {
+  edges: Array<PhotoIdentifier>,
   page_info: {
     has_next_page: boolean,
     start_cursor?: string,
     end_cursor?: string,
   },
-}>;
+};
 
 /**
  * Shape of the return value of the `getPhotos` function.
  */
-const getPhotosReturnChecker = createStrictShapeTypeChecker({
+const getPhotosReturnChecker = deprecatedCreateStrictShapeTypeChecker({
   edges: PropTypes.arrayOf(
     /* $FlowFixMe(>=0.66.0 site=react_native_fb) This comment suppresses an
      * error found when Flow v0.66 was deployed. To see the error delete this
      * comment and run Flow. */
-    createStrictShapeTypeChecker({
-      node: createStrictShapeTypeChecker({
+    deprecatedCreateStrictShapeTypeChecker({
+      node: deprecatedCreateStrictShapeTypeChecker({
         type: PropTypes.string.isRequired,
         group_name: PropTypes.string.isRequired,
-        image: createStrictShapeTypeChecker({
+        image: deprecatedCreateStrictShapeTypeChecker({
           uri: PropTypes.string.isRequired,
           height: PropTypes.number.isRequired,
           width: PropTypes.number.isRequired,
@@ -128,7 +133,7 @@ const getPhotosReturnChecker = createStrictShapeTypeChecker({
           playableDuration: PropTypes.number.isRequired,
         }).isRequired,
         timestamp: PropTypes.number.isRequired,
-        location: createStrictShapeTypeChecker({
+        location: deprecatedCreateStrictShapeTypeChecker({
           latitude: PropTypes.number,
           longitude: PropTypes.number,
           altitude: PropTypes.number,
@@ -138,7 +143,7 @@ const getPhotosReturnChecker = createStrictShapeTypeChecker({
       }).isRequired,
     }),
   ).isRequired,
-  page_info: createStrictShapeTypeChecker({
+  page_info: deprecatedCreateStrictShapeTypeChecker({
     has_next_page: PropTypes.bool.isRequired,
     start_cursor: PropTypes.string,
     end_cursor: PropTypes.string,
@@ -151,8 +156,8 @@ const getPhotosReturnChecker = createStrictShapeTypeChecker({
  * See https://facebook.github.io/react-native/docs/cameraroll.html
  */
 class CameraRoll {
-  static GroupTypesOptions: Object = GROUP_TYPES_OPTIONS;
-  static AssetTypeOptions: Object = ASSET_TYPE_OPTIONS;
+  static GroupTypesOptions = GROUP_TYPES_OPTIONS;
+  static AssetTypeOptions = ASSET_TYPE_OPTIONS;
 
   /**
    * `CameraRoll.saveImageWithTag()` is deprecated. Use `CameraRoll.saveToCameraRoll()` instead.
@@ -204,7 +209,7 @@ class CameraRoll {
    *
    * See https://facebook.github.io/react-native/docs/cameraroll.html#getphotos
    */
-  static getPhotos(params: GetPhotosParams): GetPhotosReturn {
+  static getPhotos(params: GetPhotosParams): Promise<PhotoIdentifiersPage> {
     if (__DEV__) {
       checkPropTypes(
         {params: getPhotosParamChecker},
diff --git a/Libraries/CameraRoll/ImagePickerIOS.js b/Libraries/CameraRoll/ImagePickerIOS.js
index 785f4b57cb6b56..9c783339835f88 100644
--- a/Libraries/CameraRoll/ImagePickerIOS.js
+++ b/Libraries/CameraRoll/ImagePickerIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.h b/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.h
index 8189bb56e4ea8c..7ccba500f59f0b 100644
--- a/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.h
+++ b/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.m b/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.m
index 9721b392b80f78..663598ceaea0b7 100644
--- a/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.m
+++ b/Libraries/CameraRoll/RCTAssetsLibraryRequestHandler.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTCameraRollManager.h b/Libraries/CameraRoll/RCTCameraRollManager.h
index b8b2c7d2ad63c7..3341c539b0e9dc 100644
--- a/Libraries/CameraRoll/RCTCameraRollManager.h
+++ b/Libraries/CameraRoll/RCTCameraRollManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTCameraRollManager.m b/Libraries/CameraRoll/RCTCameraRollManager.m
index e6e397392bd159..96e117c16a3783 100644
--- a/Libraries/CameraRoll/RCTCameraRollManager.m
+++ b/Libraries/CameraRoll/RCTCameraRollManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTImagePickerManager.h b/Libraries/CameraRoll/RCTImagePickerManager.h
index 825e7721a46c01..5f489191c3ffc2 100644
--- a/Libraries/CameraRoll/RCTImagePickerManager.h
+++ b/Libraries/CameraRoll/RCTImagePickerManager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTImagePickerManager.m b/Libraries/CameraRoll/RCTImagePickerManager.m
index 6273d7bed9c321..b8e570cfcd7b77 100644
--- a/Libraries/CameraRoll/RCTImagePickerManager.m
+++ b/Libraries/CameraRoll/RCTImagePickerManager.m
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,6 +16,16 @@
 #import <React/RCTRootView.h>
 #import <React/RCTUtils.h>
 
+@interface RCTImagePickerController : UIImagePickerController
+
+@property (nonatomic, assign) BOOL unmirrorFrontFacingCamera;
+
+@end
+
+@implementation RCTImagePickerController
+
+@end
+
 @interface RCTImagePickerManager () <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
 
 @end
@@ -31,6 +41,22 @@ @implementation RCTImagePickerManager
 
 @synthesize bridge = _bridge;
 
+- (id)init
+{
+  if (self = [super init]) {
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(cameraChanged:)
+                                                 name:@"AVCaptureDeviceDidStartRunningNotification"
+                                               object:nil];
+  }
+  return self;
+}
+
+- (void)dealloc
+{
+    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"AVCaptureDeviceDidStartRunningNotification" object:nil];
+}
+
 - (dispatch_queue_t)methodQueue
 {
   return dispatch_get_main_queue();
@@ -56,9 +82,10 @@ - (dispatch_queue_t)methodQueue
     return;
   }
 
-  UIImagePickerController *imagePicker = [UIImagePickerController new];
+  RCTImagePickerController *imagePicker = [RCTImagePickerController new];
   imagePicker.delegate = self;
   imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
+  imagePicker.unmirrorFrontFacingCamera = [RCTConvert BOOL:config[@"unmirrorFrontFacingCamera"]];
 
   if ([RCTConvert BOOL:config[@"videoMode"]]) {
     imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
@@ -175,4 +202,17 @@ - (void)_dismissPicker:(UIImagePickerController *)picker args:(NSArray *)args
   }
 }
 
+- (void)cameraChanged:(NSNotification *)notification
+{
+  for (UIImagePickerController *picker in _pickers) {
+    if ([picker isKindOfClass:[RCTImagePickerController class]]
+      && ((RCTImagePickerController *)picker).unmirrorFrontFacingCamera
+      && picker.cameraDevice == UIImagePickerControllerCameraDeviceFront) {
+      picker.cameraViewTransform = CGAffineTransformScale(CGAffineTransformIdentity, -1, 1);
+    } else {
+      picker.cameraViewTransform = CGAffineTransformIdentity;
+    }
+  }
+}
+
 @end
diff --git a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.h b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.h
index 0a45f184dab73c..d3b8dc646b3c6b 100644
--- a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.h
+++ b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
index ac27231adc9e9a..e6c191e93b5099 100644
--- a/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
+++ b/Libraries/CameraRoll/RCTPhotoLibraryImageLoader.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Color/normalizeColor.js b/Libraries/Color/normalizeColor.js
index f94dcaf8bc3fdc..83df4162017f46 100755
--- a/Libraries/Color/normalizeColor.js
+++ b/Libraries/Color/normalizeColor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
index f3bb359b70e37d..6cd0193eb42eca 100644
--- a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
+++ b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
index da1f6e4f1610d1..5a1d64e9595e83 100644
--- a/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
+++ b/Libraries/Components/AccessibilityInfo/AccessibilityInfo.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ActivityIndicator/ActivityIndicator.js b/Libraries/Components/ActivityIndicator/ActivityIndicator.js
index fd70c7e5d2a165..88d15f4dc32d0d 100644
--- a/Libraries/Components/ActivityIndicator/ActivityIndicator.js
+++ b/Libraries/Components/ActivityIndicator/ActivityIndicator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -113,6 +113,7 @@ const ActivityIndicator = (
 
 // $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
 const ActivityIndicatorWithRef = React.forwardRef(ActivityIndicator);
+ActivityIndicatorWithRef.displayName = 'ActivityIndicator';
 
 ActivityIndicatorWithRef.defaultProps = {
   animating: true,
diff --git a/Libraries/Components/ActivityIndicator/__tests__/ActivityIndicator-test.js b/Libraries/Components/ActivityIndicator/__tests__/ActivityIndicator-test.js
new file mode 100644
index 00000000000000..ec97e8255c4f29
--- /dev/null
+++ b/Libraries/Components/ActivityIndicator/__tests__/ActivityIndicator-test.js
@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @emails oncall+react_native
+ * @flow
+ */
+
+'use strict';
+
+const React = require('React');
+const ActivityIndicator = require('ActivityIndicator');
+const render = require('../../../../jest/renderer');
+
+describe('ActivityIndicator', () => {
+  it('should set displayName to prevent <Component /> regressions', () => {
+    expect(ActivityIndicator.displayName).toBe('ActivityIndicator');
+  });
+
+  it('should render as <ActivityIndicator> when mocked', () => {
+    const instance = render.create(
+      <ActivityIndicator size="large" color="#0000ff" />,
+    );
+    expect(instance).toMatchSnapshot();
+  });
+
+  it('should shallow render as <ActivityIndicator> when mocked', () => {
+    const output = render.shallow(
+      <ActivityIndicator size="large" color="#0000ff" />,
+    );
+    expect(output).toMatchSnapshot();
+  });
+
+  it('should shallow render as <ForwardRef(ActivityIndicator)> when not mocked', () => {
+    jest.dontMock('ActivityIndicator');
+
+    const output = render.shallow(
+      <ActivityIndicator size="large" color="#0000ff" />,
+    );
+    expect(output).toMatchSnapshot();
+  });
+
+  it('should render as <View> when not mocked', () => {
+    jest.dontMock('ActivityIndicator');
+
+    const instance = render.create(
+      <ActivityIndicator size="large" color="#0000ff" />,
+    );
+    expect(instance).toMatchSnapshot();
+  });
+});
diff --git a/Libraries/Components/ActivityIndicator/__tests__/__snapshots__/ActivityIndicator-test.js.snap b/Libraries/Components/ActivityIndicator/__tests__/__snapshots__/ActivityIndicator-test.js.snap
new file mode 100644
index 00000000000000..d8cbec0f26428f
--- /dev/null
+++ b/Libraries/Components/ActivityIndicator/__tests__/__snapshots__/ActivityIndicator-test.js.snap
@@ -0,0 +1,54 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`ActivityIndicator should render as <ActivityIndicator> when mocked 1`] = `
+<ActivityIndicator
+  animating={true}
+  color="#0000ff"
+  hidesWhenStopped={true}
+  size="large"
+/>
+`;
+
+exports[`ActivityIndicator should render as <View> when not mocked 1`] = `
+<View
+  style={
+    Object {
+      "alignItems": "center",
+      "justifyContent": "center",
+    }
+  }
+>
+  <RCTActivityIndicatorView
+    animating={true}
+    color="#0000ff"
+    hidesWhenStopped={true}
+    indeterminate={true}
+    size="large"
+    style={
+      Object {
+        "height": 36,
+        "width": 36,
+      }
+    }
+    styleAttr="Normal"
+  />
+</View>
+`;
+
+exports[`ActivityIndicator should shallow render as <ActivityIndicator> when mocked 1`] = `
+<ActivityIndicator
+  animating={true}
+  color="#0000ff"
+  hidesWhenStopped={true}
+  size="large"
+/>
+`;
+
+exports[`ActivityIndicator should shallow render as <ForwardRef(ActivityIndicator)> when not mocked 1`] = `
+<ForwardRef(ActivityIndicator)
+  animating={true}
+  color="#0000ff"
+  hidesWhenStopped={true}
+  size="large"
+/>
+`;
diff --git a/Libraries/Components/AppleTV/TVEventHandler.js b/Libraries/Components/AppleTV/TVEventHandler.js
index 567776b5d9bfa9..9b584de6bec581 100644
--- a/Libraries/Components/AppleTV/TVEventHandler.js
+++ b/Libraries/Components/AppleTV/TVEventHandler.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/AppleTV/TVViewPropTypes.js b/Libraries/Components/AppleTV/TVViewPropTypes.js
index 5bda1f618c5440..d7492967bc128b 100644
--- a/Libraries/Components/AppleTV/TVViewPropTypes.js
+++ b/Libraries/Components/AppleTV/TVViewPropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,76 +9,100 @@
  */
 
 'use strict';
-const PropTypes = require('prop-types');
+
+export type TVParallaxPropertiesType = $ReadOnly<{|
+  /**
+   * If true, parallax effects are enabled.  Defaults to true.
+   */
+  enabled?: boolean,
+
+  /**
+   * Defaults to 2.0.
+   */
+  shiftDistanceX?: number,
+
+  /**
+   * Defaults to 2.0.
+   */
+  shiftDistanceY?: number,
+
+  /**
+   * Defaults to 0.05.
+   */
+  tiltAngle?: number,
+
+  /**
+   * Defaults to 1.0
+   */
+  magnification?: number,
+
+  /**
+   * Defaults to 1.0
+   */
+  pressMagnification?: number,
+
+  /**
+   * Defaults to 0.3
+   */
+  pressDuration?: number,
+
+  /**
+   * Defaults to 0.3
+   */
+  pressDelay?: number,
+|}>;
 
 /**
  * Additional View properties for Apple TV
  */
-const TVViewPropTypes = {
+export type TVViewProps = $ReadOnly<{|
   /**
-   * When set to true, this view will be focusable
-   * and navigable using the TV remote.
+   * *(Apple TV only)* When set to true, this view will be focusable
+   * and navigable using the Apple TV remote.
+   *
+   * @platform ios
    */
-  isTVSelectable: PropTypes.bool,
+  isTVSelectable?: boolean,
 
   /**
-   * May be set to true to force the TV focus engine to move focus to this view.
+   * *(Apple TV only)* May be set to true to force the Apple TV focus engine to move focus to this view.
+   *
+   * @platform ios
    */
-  hasTVPreferredFocus: PropTypes.bool,
+  hasTVPreferredFocus?: boolean,
 
   /**
    * *(Apple TV only)* Object with properties to control Apple TV parallax effects.
    *
-   * enabled: If true, parallax effects are enabled.  Defaults to true.
-   * shiftDistanceX: Defaults to 2.0.
-   * shiftDistanceY: Defaults to 2.0.
-   * tiltAngle: Defaults to 0.05.
-   * magnification: Defaults to 1.0.
-   * pressMagnification: Defaults to 1.0.
-   * pressDuration: Defaults to 0.3.
-   * pressDelay: Defaults to 0.0.
-   *
    * @platform ios
    */
-  tvParallaxProperties: PropTypes.object,
+  tvParallaxProperties?: TVParallaxPropertiesType,
 
   /**
    * *(Apple TV only)* May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus.  Defaults to 2.0.
    *
    * @platform ios
    */
-  tvParallaxShiftDistanceX: PropTypes.number,
+  tvParallaxShiftDistanceX?: number,
 
   /**
    * *(Apple TV only)* May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus.  Defaults to 2.0.
    *
    * @platform ios
    */
-  tvParallaxShiftDistanceY: PropTypes.number,
+  tvParallaxShiftDistanceY?: number,
 
   /**
    * *(Apple TV only)* May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus.  Defaults to 0.05.
    *
    * @platform ios
    */
-  tvParallaxTiltAngle: PropTypes.number,
+  tvParallaxTiltAngle?: number,
 
   /**
    * *(Apple TV only)* May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus.  Defaults to 1.0.
    *
    * @platform ios
    */
-  tvParallaxMagnification: PropTypes.number,
-};
-
-export type TVViewProps = $ReadOnly<{|
-  isTVSelectable?: boolean,
-  hasTVPreferredFocus?: boolean,
-  tvParallaxProperties?: Object,
-  tvParallaxShiftDistanceX?: number,
-  tvParallaxShiftDistanceY?: number,
-  tvParallaxTiltAngle?: number,
   tvParallaxMagnification?: number,
 |}>;
-
-module.exports = TVViewPropTypes;
diff --git a/Libraries/Components/Button.js b/Libraries/Components/Button.js
index 707d55f2c93798..b542dd481ab135 100644
--- a/Libraries/Components/Button.js
+++ b/Libraries/Components/Button.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,10 +10,8 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
 const Platform = require('Platform');
 const React = require('React');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
 const TouchableHighlight = require('TouchableHighlight'); // [TODO(windows ISS)
@@ -23,6 +21,48 @@ const View = require('View');
 
 const invariant = require('fbjs/lib/invariant');
 
+import type { PressEvent } from 'CoreEventTypes';
+
+type ButtonProps = $ReadOnly<{|
+  /**
+   * Text to display inside the button
+   */
+  title: string,
+
+    /**
+     * Handler to be called when the user taps the button
+     */
+    onPress: (event?: PressEvent) => mixed,
+
+      /**
+       * Color of the text (iOS), or background color of the button (Android)
+       */
+      color ?: ? string,
+
+      /**
+       * TV preferred focus (see documentation for the View component).
+       */
+      hasTVPreferredFocus ?: ? boolean,
+
+      /**
+       * Text to display for blindness accessibility features
+       */
+      accessibilityLabel ?: ? string,
+      /**
+       * Hint text to display blindness accessibility features
+       */
+      accessibilityHint: PropTypes.string, // TODO(OSS Candidate ISS#2710739)
+        /**
+         * If true, disable all interactions for this component.
+         */
+        disabled ?: ? boolean,
+
+        /**
+         * Used to locate this view in end-to-end tests.
+         */
+        testID ?: ? string,
+|}>;
+
 /**
  * A basic button component that should render nicely on any platform. Supports
  * a minimal level of customization.
@@ -51,51 +91,7 @@ const invariant = require('fbjs/lib/invariant');
  *
  */
 
-class Button extends React.Component<{
-  title: string,
-  onPress: () => any,
-  color?: ?string,
-  hasTVPreferredFocus?: ?boolean,
-  accessibilityLabel?: ?string,
-  accessibilityHint?: string, // TODO(OSS Candidate ISS#2710739)
-  disabled?: ?boolean,
-  testID?: ?string,
-}> {
-  static propTypes = {
-    /**
-     * Text to display inside the button
-     */
-    title: PropTypes.string.isRequired,
-    /**
-     * Text to display for blindness accessibility features
-     */
-    accessibilityLabel: PropTypes.string,
-    /**
-     * Hint text to display blindness accessibility features
-     */
-    accessibilityHint: PropTypes.string, // TODO(OSS Candidate ISS#2710739)
-    /**
-     * Color of the text (iOS, macOS), or background color of the button (Android)
-     */
-    color: ColorPropType,
-    /**
-     * If true, disable all interactions for this component.
-     */
-    disabled: PropTypes.bool,
-    /**
-     * TV preferred focus (see documentation for the View component).
-     */
-    hasTVPreferredFocus: PropTypes.bool,
-    /**
-     * Handler to be called when the user taps the button
-     */
-    onPress: PropTypes.func.isRequired,
-    /**
-     * Used to locate this view in end-to-end tests.
-     */
-    testID: PropTypes.string,
-  };
-
+class Button extends React.Component<ButtonProps> {
   render() {
     const {
       accessibilityLabel,
@@ -114,9 +110,9 @@ class Button extends React.Component<{
         Platform.OS === 'ios' ||
         Platform.OS === 'macos' /* TODO(macOS ISS#2323203) */
       ) {
-        textStyles.push({color: color});
+        textStyles.push({ color: color });
       } else {
-        buttonStyles.push({backgroundColor: color});
+        buttonStyles.push({ backgroundColor: color });
       }
     }
     const accessibilityStates = [];
@@ -174,36 +170,30 @@ const styles = StyleSheet.create({
     },
     windesktop: {}, // ]TODO(windows ISS)
   }),
-  text: Platform.select({
-    ios: {
-      // iOS blue from https://developer.apple.com/ios/human-interface-guidelines/visual-design/color/
-      color: '#007AFF',
-      textAlign: 'center',
-      padding: 8,
-      fontSize: 18,
-    },
-    android: {
-      color: 'white',
-      textAlign: 'center',
-      padding: 8,
-      fontWeight: '500',
-    },
-    macos: {
-      // [TODO(macOS ISS#2323203)
-      color: '#007AFF',
-      textAlign: 'center',
-      padding: 8,
-      fontSize: 18,
-    }, // ]TODO(macOS ISS#2323203)
-    uwp: {
-      // [TODO(windows ISS)
-      textAlign: 'center',
-      color: 'white',
-      padding: 8,
-      fontWeight: '500',
-    },
-    windesktop: {}, // ]TODO(windows ISS)
-  }),
+  text: {
+    textAlign: 'center',
+    padding: 8,
+    ...Platform.select({
+      ios: {
+        // iOS blue from https://developer.apple.com/ios/human-interface-guidelines/visual-design/color/
+        color: '#007AFF',
+        fontSize: 18,
+      },
+      android: {
+        color: 'white',
+        fontWeight: '500',
+      },
+      macos: { // [TODO(macOS ISS#2323203)
+        color: '#007AFF',
+        fontSize: 18,
+      }, // ]TODO(macOS ISS#2323203)
+      uwp: { // [TODO(windows ISS)
+        color: 'white',
+        fontWeight: '500',
+      },
+      windesktop: {}, // ]TODO(windows ISS)
+    }),
+  },
   buttonDisabled: Platform.select({
     ios: {},
     android: {
diff --git a/Libraries/Components/CheckBox/CheckBox.android.js b/Libraries/Components/CheckBox/CheckBox.android.js
index 45a3e6f08ac0c4..fe5e23eafc5cf2 100644
--- a/Libraries/Components/CheckBox/CheckBox.android.js
+++ b/Libraries/Components/CheckBox/CheckBox.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,21 +9,76 @@
  */
 'use strict';
 
-const NativeMethodsMixin = require('NativeMethodsMixin');
-const PropTypes = require('prop-types');
 const React = require('React');
 const StyleSheet = require('StyleSheet');
-const ViewPropTypes = require('ViewPropTypes');
 
-const createReactClass = require('create-react-class');
 const requireNativeComponent = require('requireNativeComponent');
+const nullthrows = require('nullthrows');
+const setAndForwardRef = require('setAndForwardRef');
 
-const RCTCheckBox = requireNativeComponent('AndroidCheckBox');
+import type {ViewProps} from 'ViewPropTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {NativeComponent} from 'ReactNative';
 
-type DefaultProps = {
-  value: boolean,
-  disabled: boolean,
-};
+type CheckBoxEvent = SyntheticEvent<
+  $ReadOnly<{|
+    target: number,
+    value: boolean,
+  |}>,
+>;
+
+type CommonProps = $ReadOnly<{|
+  ...ViewProps,
+
+  /**
+   * Used in case the props change removes the component.
+   */
+  onChange?: ?(event: CheckBoxEvent) => mixed,
+
+  /**
+   * Invoked with the new value when the value changes.
+   */
+  onValueChange?: ?(value: boolean) => mixed,
+
+  /**
+   * Used to locate this view in end-to-end tests.
+   */
+  testID?: ?string,
+|}>;
+
+type NativeProps = $ReadOnly<{|
+  ...CommonProps,
+
+  on?: ?boolean,
+  enabled?: boolean,
+|}>;
+
+type CheckBoxNativeType = Class<NativeComponent<NativeProps>>;
+
+type Props = $ReadOnly<{|
+  ...CommonProps,
+
+  /**
+   * The value of the checkbox.  If true the checkbox will be turned on.
+   * Default value is false.
+   */
+  value?: ?boolean,
+
+  /**
+   * If true the user won't be able to toggle the checkbox.
+   * Default value is false.
+   */
+  disabled?: ?boolean,
+
+  /**
+   * Used to get the ref for the native checkbox
+   */
+  forwardedRef?: ?React.Ref<CheckBoxNativeType>,
+|}>;
+
+const RCTCheckBox = ((requireNativeComponent(
+  'AndroidCheckBox',
+): any): CheckBoxNativeType);
 
 /**
  * Renders a boolean input (Android only).
@@ -80,85 +135,64 @@ type DefaultProps = {
  * @keyword checkbox
  * @keyword toggle
  */
-let CheckBox = createReactClass({
-  displayName: 'CheckBox',
-  propTypes: {
-    ...ViewPropTypes,
-    /**
-     * The value of the checkbox.  If true the checkbox will be turned on.
-     * Default value is false.
-     */
-    value: PropTypes.bool,
-    /**
-     * If true the user won't be able to toggle the checkbox.
-     * Default value is false.
-     */
-    disabled: PropTypes.bool,
-    /**
-     * Used in case the props change removes the component.
-     */
-    onChange: PropTypes.func,
-    /**
-     * Invoked with the new value when the value changes.
-     */
-    onValueChange: PropTypes.func,
-    /**
-     * Used to locate this view in end-to-end tests.
-     */
-    testID: PropTypes.string,
-  },
+class CheckBox extends React.Component<Props> {
+  _nativeRef: ?React.ElementRef<CheckBoxNativeType> = null;
+  _setNativeRef = setAndForwardRef({
+    getForwardedRef: () => this.props.forwardedRef,
+    setLocalRef: ref => {
+      this._nativeRef = ref;
+    },
+  });
 
-  getDefaultProps: function(): DefaultProps {
-    return {
-      value: false,
-      disabled: false,
-    };
-  },
-
-  mixins: [NativeMethodsMixin],
-
-  _rctCheckBox: {},
-  _onChange: function(event: Object) {
-    this._rctCheckBox.setNativeProps({value: this.props.value});
+  _onChange = (event: CheckBoxEvent) => {
+    const value = this.props.value ?? false;
+    nullthrows(this._nativeRef).setNativeProps({value: value});
     // Change the props after the native props are set in case the props
     // change removes the component
     this.props.onChange && this.props.onChange(event);
     this.props.onValueChange &&
       this.props.onValueChange(event.nativeEvent.value);
-  },
+  };
 
-  render: function() {
-    let props = {...this.props};
-    props.onStartShouldSetResponder = () => true;
-    props.onResponderTerminationRequest = () => false;
-    /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
-     * when making Flow check .android.js files. */
-    props.enabled = !this.props.disabled;
-    /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
-     * when making Flow check .android.js files. */
-    props.on = this.props.value;
-    props.style = [styles.rctCheckBox, this.props.style];
+  render() {
+    const {disabled: _, value: __, style, forwardedRef, ...props} = this.props;
+    const disabled = this.props.disabled ?? false;
+    const value = this.props.value ?? false;
+
+    const nativeProps = {
+      ...props,
+      onStartShouldSetResponder: () => true,
+      onResponderTerminationRequest: () => false,
+      enabled: !disabled,
+      on: value,
+      style: [styles.rctCheckBox, style],
+    };
 
     return (
       <RCTCheckBox
-        {...props}
-        ref={ref => {
-          /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This
-           * comment suppresses an error when upgrading Flow's support for
-           * React. To see the error delete this comment and run Flow. */
-          this._rctCheckBox = ref;
-        }}
+        {...nativeProps}
+        ref={this._setNativeRef}
         onChange={this._onChange}
       />
     );
-  },
-});
+  }
+}
 
-let styles = StyleSheet.create({
+const styles = StyleSheet.create({
   rctCheckBox: {
     height: 32,
     width: 32,
   },
 });
 
-module.exports = CheckBox;
+/**
+ * Can't use CheckBoxNativeType because it has different props
+ */
+type CheckBoxType = Class<NativeComponent<Props>>;
+
+// $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+const CheckBoxWithRef = React.forwardRef(function CheckBoxWithRef(props, ref) {
+  return <CheckBox {...props} forwardedRef={ref} />;
+});
+
+module.exports = (CheckBoxWithRef: CheckBoxType);
diff --git a/Libraries/Components/CheckBox/CheckBox.ios.js b/Libraries/Components/CheckBox/CheckBox.ios.js
index 11252120daa166..8bc431d610e066 100644
--- a/Libraries/Components/CheckBox/CheckBox.ios.js
+++ b/Libraries/Components/CheckBox/CheckBox.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Clipboard/Clipboard.js b/Libraries/Components/Clipboard/Clipboard.js
index a8096b26a0770b..d9eddb6cd0548e 100644
--- a/Libraries/Components/Clipboard/Clipboard.js
+++ b/Libraries/Components/Clipboard/Clipboard.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/DatePicker/DatePickerIOS.android.js b/Libraries/Components/DatePicker/DatePickerIOS.android.js
index 585be6e297673d..c532f212d6080b 100644
--- a/Libraries/Components/DatePicker/DatePickerIOS.android.js
+++ b/Libraries/Components/DatePicker/DatePickerIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/DatePicker/DatePickerIOS.ios.js b/Libraries/Components/DatePicker/DatePickerIOS.ios.js
index 1202364665fc94..0affc99de40653 100644
--- a/Libraries/Components/DatePicker/DatePickerIOS.ios.js
+++ b/Libraries/Components/DatePicker/DatePickerIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,7 +8,7 @@
  * This is a controlled component version of RCTDatePickerIOS
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
@@ -21,10 +21,15 @@ const View = require('View');
 const requireNativeComponent = require('requireNativeComponent');
 
 import type {ViewProps} from 'ViewPropTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
 
 const RCTDatePickerIOS = requireNativeComponent('RCTDatePicker');
 
-type Event = Object;
+type Event = SyntheticEvent<
+  $ReadOnly<{|
+    timestamp: number,
+  |}>,
+>;
 
 type Props = $ReadOnly<{|
   ...ViewProps,
@@ -143,6 +148,7 @@ class DatePickerIOS extends React.Component<Props> {
     return (
       <View style={props.style}>
         <RCTDatePickerIOS
+          testID={props.testID}
           ref={picker => {
             this._picker = picker;
           }}
@@ -154,7 +160,11 @@ class DatePickerIOS extends React.Component<Props> {
                 ? props.initialDate.getTime()
                 : undefined
           }
-          locale={props.locale ? props.locale : undefined}
+          locale={
+            props.locale != null && props.locale !== ''
+              ? props.locale
+              : undefined
+          }
           maximumDate={
             props.maximumDate ? props.maximumDate.getTime() : undefined
           }
diff --git a/Libraries/Components/DatePickerAndroid/DatePickerAndroid.android.js b/Libraries/Components/DatePickerAndroid/DatePickerAndroid.android.js
index bd91263a8f9b49..734a59abf72cf4 100644
--- a/Libraries/Components/DatePickerAndroid/DatePickerAndroid.android.js
+++ b/Libraries/Components/DatePickerAndroid/DatePickerAndroid.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/DatePickerAndroid/DatePickerAndroid.ios.js b/Libraries/Components/DatePickerAndroid/DatePickerAndroid.ios.js
index a158f035c303d3..bb6442b5262c79 100644
--- a/Libraries/Components/DatePickerAndroid/DatePickerAndroid.ios.js
+++ b/Libraries/Components/DatePickerAndroid/DatePickerAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
index d4b3fa9f7f63d0..e41c4e5cc4d979 100644
--- a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
+++ b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js
@@ -1,37 +1,153 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow
  * @format
  */
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const NativeMethodsMixin = require('NativeMethodsMixin');
 const Platform = require('Platform');
 const React = require('React');
-const PropTypes = require('prop-types');
 const ReactNative = require('ReactNative');
 const StatusBar = require('StatusBar');
 const StyleSheet = require('StyleSheet');
 const UIManager = require('UIManager');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
+const nullthrows = require('nullthrows');
 
-const DrawerConsts = UIManager.AndroidDrawerLayout.Constants;
+const DrawerConsts = UIManager.getViewManagerConfig('AndroidDrawerLayout')
+  .Constants;
 
-const createReactClass = require('create-react-class');
 const dismissKeyboard = require('dismissKeyboard');
 const requireNativeComponent = require('requireNativeComponent');
 
-const RK_DRAWER_REF = 'drawerlayout';
-const INNERVIEW_REF = 'innerView';
-
 const DRAWER_STATES = ['Idle', 'Dragging', 'Settling'];
 
+import type {ViewStyleProp} from 'StyleSheet';
+import type {ColorValue} from 'StyleSheetTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {
+  MeasureOnSuccessCallback,
+  MeasureInWindowOnSuccessCallback,
+  MeasureLayoutOnSuccessCallback,
+} from 'ReactNativeTypes';
+
+type DrawerStates = 'Idle' | 'Dragging' | 'Settling';
+
+type DrawerStateEvent = SyntheticEvent<
+  $ReadOnly<{|
+    drawerState: number,
+  |}>,
+>;
+
+type DrawerSlideEvent = SyntheticEvent<
+  $ReadOnly<{|
+    offset: number,
+  |}>,
+>;
+
+type Props = $ReadOnly<{|
+  /**
+   * Determines whether the keyboard gets dismissed in response to a drag.
+   *   - 'none' (the default), drags do not dismiss the keyboard.
+   *   - 'on-drag', the keyboard is dismissed when a drag begins.
+   */
+  keyboardDismissMode?: ?('none' | 'on-drag'),
+
+  /**
+   * Specifies the background color of the drawer. The default value is white.
+   * If you want to set the opacity of the drawer, use rgba. Example:
+   *
+   * ```
+   * return (
+   *   <DrawerLayoutAndroid drawerBackgroundColor="rgba(0,0,0,0.5)">
+   *   </DrawerLayoutAndroid>
+   * );
+   * ```
+   */
+  drawerBackgroundColor: ColorValue,
+
+  /**
+   * Specifies the side of the screen from which the drawer will slide in.
+   */
+  drawerPosition: ?number,
+
+  /**
+   * Specifies the width of the drawer, more precisely the width of the view that be pulled in
+   * from the edge of the window.
+   */
+  drawerWidth?: ?number,
+
+  /**
+   * Specifies the lock mode of the drawer. The drawer can be locked in 3 states:
+   * - unlocked (default), meaning that the drawer will respond (open/close) to touch gestures.
+   * - locked-closed, meaning that the drawer will stay closed and not respond to gestures.
+   * - locked-open, meaning that the drawer will stay opened and not respond to gestures.
+   * The drawer may still be opened and closed programmatically (`openDrawer`/`closeDrawer`).
+   */
+  drawerLockMode?: ?('unlocked' | 'locked-closed' | 'locked-open'),
+
+  /**
+   * Function called whenever there is an interaction with the navigation view.
+   */
+  onDrawerSlide?: ?(event: DrawerSlideEvent) => mixed,
+
+  /**
+   * Function called when the drawer state has changed. The drawer can be in 3 states:
+   * - Idle, meaning there is no interaction with the navigation view happening at the time
+   * - Dragging, meaning there is currently an interaction with the navigation view
+   * - Settling, meaning that there was an interaction with the navigation view, and the
+   * navigation view is now finishing its closing or opening animation
+   */
+  onDrawerStateChanged?: ?(state: DrawerStates) => mixed,
+
+  /**
+   * Function called whenever the navigation view has been opened.
+   */
+  onDrawerOpen?: ?() => mixed,
+
+  /**
+   * Function called whenever the navigation view has been closed.
+   */
+  onDrawerClose?: ?() => mixed,
+
+  /**
+   * The navigation view that will be rendered to the side of the screen and can be pulled in.
+   */
+  renderNavigationView: () => React.Element<any>,
+
+  /**
+   * Make the drawer take the entire screen and draw the background of the
+   * status bar to allow it to open over the status bar. It will only have an
+   * effect on API 21+.
+   */
+  statusBarBackgroundColor?: ?ColorValue,
+
+  children?: React.Node,
+  style?: ?ViewStyleProp,
+|}>;
+
+type NativeProps = $ReadOnly<{|
+  ...$Diff<
+    Props,
+    $ReadOnly<{onDrawerStateChanged?: ?(state: DrawerStates) => mixed}>,
+  >,
+  onDrawerStateChanged?: ?(state: DrawerStateEvent) => mixed,
+|}>;
+
+type State = {|
+  statusBarBackgroundColor: ColorValue,
+|};
+
+// The View that contains both the actual drawer and the main view
+const AndroidDrawerLayout = ((requireNativeComponent(
+  'AndroidDrawerLayout',
+): any): Class<ReactNative.NativeComponent<NativeProps>>);
+
 /**
  * React component that wraps the platform `DrawerLayout` (Android only). The
  * Drawer (typically used for navigation) is rendered with `renderNavigationView`
@@ -63,109 +179,20 @@ const DRAWER_STATES = ['Idle', 'Dragging', 'Settling'];
  * },
  * ```
  */
-const DrawerLayoutAndroid = createReactClass({
-  displayName: 'DrawerLayoutAndroid',
-  statics: {
-    positions: DrawerConsts.DrawerPosition,
-  },
-
-  propTypes: {
-    ...ViewPropTypes,
-    /**
-     * Determines whether the keyboard gets dismissed in response to a drag.
-     *   - 'none' (the default), drags do not dismiss the keyboard.
-     *   - 'on-drag', the keyboard is dismissed when a drag begins.
-     */
-    keyboardDismissMode: PropTypes.oneOf([
-      'none', // default
-      'on-drag',
-    ]),
-    /**
-     * Specifies the background color of the drawer. The default value is white.
-     * If you want to set the opacity of the drawer, use rgba. Example:
-     *
-     * ```
-     * return (
-     *   <DrawerLayoutAndroid drawerBackgroundColor="rgba(0,0,0,0.5)">
-     *   </DrawerLayoutAndroid>
-     * );
-     * ```
-     */
-    drawerBackgroundColor: ColorPropType,
-    /**
-     * Specifies the side of the screen from which the drawer will slide in.
-     */
-    drawerPosition: PropTypes.oneOf([
-      DrawerConsts.DrawerPosition.Left,
-      DrawerConsts.DrawerPosition.Right,
-    ]),
-    /**
-     * Specifies the width of the drawer, more precisely the width of the view that be pulled in
-     * from the edge of the window.
-     */
-    drawerWidth: PropTypes.number,
-    /**
-     * Specifies the lock mode of the drawer. The drawer can be locked in 3 states:
-     * - unlocked (default), meaning that the drawer will respond (open/close) to touch gestures.
-     * - locked-closed, meaning that the drawer will stay closed and not respond to gestures.
-     * - locked-open, meaning that the drawer will stay opened and not respond to gestures.
-     * The drawer may still be opened and closed programmatically (`openDrawer`/`closeDrawer`).
-     */
-    drawerLockMode: PropTypes.oneOf([
-      'unlocked',
-      'locked-closed',
-      'locked-open',
-    ]),
-    /**
-     * Function called whenever there is an interaction with the navigation view.
-     */
-    onDrawerSlide: PropTypes.func,
-    /**
-     * Function called when the drawer state has changed. The drawer can be in 3 states:
-     * - idle, meaning there is no interaction with the navigation view happening at the time
-     * - dragging, meaning there is currently an interaction with the navigation view
-     * - settling, meaning that there was an interaction with the navigation view, and the
-     * navigation view is now finishing its closing or opening animation
-     */
-    onDrawerStateChanged: PropTypes.func,
-    /**
-     * Function called whenever the navigation view has been opened.
-     */
-    onDrawerOpen: PropTypes.func,
-    /**
-     * Function called whenever the navigation view has been closed.
-     */
-    onDrawerClose: PropTypes.func,
-    /**
-     * The navigation view that will be rendered to the side of the screen and can be pulled in.
-     */
-    renderNavigationView: PropTypes.func.isRequired,
-
-    /**
-     * Make the drawer take the entire screen and draw the background of the
-     * status bar to allow it to open over the status bar. It will only have an
-     * effect on API 21+.
-     */
-    statusBarBackgroundColor: ColorPropType,
-  },
+class DrawerLayoutAndroid extends React.Component<Props, State> {
+  static positions = DrawerConsts.DrawerPosition;
+  static defaultProps = {
+    drawerBackgroundColor: 'white',
+  };
 
-  mixins: [NativeMethodsMixin],
+  _nativeRef = React.createRef<
+    Class<ReactNative.NativeComponent<NativeProps>>,
+  >();
 
-  getDefaultProps: function(): Object {
-    return {
-      drawerBackgroundColor: 'white',
-    };
-  },
+  state = {statusBarBackgroundColor: null};
 
-  getInitialState: function() {
-    return {statusBarBackgroundColor: undefined};
-  },
-
-  getInnerViewNode: function() {
-    return this.refs[INNERVIEW_REF].getInnerViewNode();
-  },
-
-  render: function() {
+  render() {
+    const {onDrawerStateChanged, ...props} = this.props;
     const drawStatusBar =
       Platform.Version >= 21 && this.props.statusBarBackgroundColor;
     const drawerViewWrapper = (
@@ -183,7 +210,7 @@ const DrawerLayoutAndroid = createReactClass({
       </View>
     );
     const childrenWrapper = (
-      <View ref={INNERVIEW_REF} style={styles.mainSubview} collapsable={false}>
+      <View style={styles.mainSubview} collapsable={false}>
         {drawStatusBar && (
           <StatusBar
             translucent
@@ -203,8 +230,8 @@ const DrawerLayoutAndroid = createReactClass({
     );
     return (
       <AndroidDrawerLayout
-        {...this.props}
-        ref={RK_DRAWER_REF}
+        {...props}
+        ref={this._nativeRef}
         drawerWidth={this.props.drawerWidth}
         drawerPosition={this.props.drawerPosition}
         drawerLockMode={this.props.drawerLockMode}
@@ -217,58 +244,60 @@ const DrawerLayoutAndroid = createReactClass({
         {drawerViewWrapper}
       </AndroidDrawerLayout>
     );
-  },
+  }
 
-  _onDrawerSlide: function(event) {
+  _onDrawerSlide = (event: DrawerSlideEvent) => {
     if (this.props.onDrawerSlide) {
       this.props.onDrawerSlide(event);
     }
     if (this.props.keyboardDismissMode === 'on-drag') {
       dismissKeyboard();
     }
-  },
+  };
 
-  _onDrawerOpen: function() {
+  _onDrawerOpen = () => {
     if (this.props.onDrawerOpen) {
       this.props.onDrawerOpen();
     }
-  },
+  };
 
-  _onDrawerClose: function() {
+  _onDrawerClose = () => {
     if (this.props.onDrawerClose) {
       this.props.onDrawerClose();
     }
-  },
+  };
 
-  _onDrawerStateChanged: function(event) {
+  _onDrawerStateChanged = (event: DrawerStateEvent) => {
     if (this.props.onDrawerStateChanged) {
       this.props.onDrawerStateChanged(
         DRAWER_STATES[event.nativeEvent.drawerState],
       );
     }
-  },
+  };
 
   /**
    * Opens the drawer.
    */
-  openDrawer: function() {
+  openDrawer() {
     UIManager.dispatchViewManagerCommand(
       this._getDrawerLayoutHandle(),
-      UIManager.AndroidDrawerLayout.Commands.openDrawer,
+      UIManager.getViewManagerConfig('AndroidDrawerLayout').Commands.openDrawer,
       null,
     );
-  },
+  }
 
   /**
    * Closes the drawer.
    */
-  closeDrawer: function() {
+  closeDrawer() {
     UIManager.dispatchViewManagerCommand(
       this._getDrawerLayoutHandle(),
-      UIManager.AndroidDrawerLayout.Commands.closeDrawer,
+      UIManager.getViewManagerConfig('AndroidDrawerLayout').Commands
+        .closeDrawer,
       null,
     );
-  },
+  }
+
   /**
    * Closing and opening example
    * Note: To access the drawer you have to give it a ref. Refs do not work on stateless components
@@ -285,10 +314,45 @@ const DrawerLayoutAndroid = createReactClass({
    *   )
    * }
    */
-  _getDrawerLayoutHandle: function() {
-    return ReactNative.findNodeHandle(this.refs[RK_DRAWER_REF]);
-  },
-});
+  _getDrawerLayoutHandle() {
+    return ReactNative.findNodeHandle(this._nativeRef.current);
+  }
+
+  /**
+   * Native methods
+   */
+  blur() {
+    nullthrows(this._nativeRef.current).blur();
+  }
+
+  focus() {
+    nullthrows(this._nativeRef.current).focus();
+  }
+
+  measure(callback: MeasureOnSuccessCallback) {
+    nullthrows(this._nativeRef.current).measure(callback);
+  }
+
+  measureInWindow(callback: MeasureInWindowOnSuccessCallback) {
+    nullthrows(this._nativeRef.current).measureInWindow(callback);
+  }
+
+  measureLayout(
+    relativeToNativeNode: number,
+    onSuccess: MeasureLayoutOnSuccessCallback,
+    onFail?: () => void,
+  ) {
+    nullthrows(this._nativeRef.current).measureLayout(
+      relativeToNativeNode,
+      onSuccess,
+      onFail,
+    );
+  }
+
+  setNativeProps(nativeProps: Object) {
+    nullthrows(this._nativeRef.current).setNativeProps(nativeProps);
+  }
+}
 
 const styles = StyleSheet.create({
   base: {
@@ -320,7 +384,4 @@ const styles = StyleSheet.create({
   },
 });
 
-// The View that contains both the actual drawer and the main view
-const AndroidDrawerLayout = requireNativeComponent('AndroidDrawerLayout');
-
 module.exports = DrawerLayoutAndroid;
diff --git a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.ios.js b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.ios.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.ios.js
+++ b/Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Keyboard/Keyboard.js b/Libraries/Components/Keyboard/Keyboard.js
index feeb4a4ec2ce70..c95ed6586e98bf 100644
--- a/Libraries/Components/Keyboard/Keyboard.js
+++ b/Libraries/Components/Keyboard/Keyboard.js
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
@@ -121,7 +121,10 @@ let Keyboard = {
    * @param {string} eventName The `nativeEvent` is the string that identifies the event you're listening for.
    * @param {function} callback function to be called when the event fires.
    */
-  removeListener(eventName: KeyboardEventName, callback: Function) {
+  removeListener(
+    eventName: KeyboardEventName,
+    callback: KeyboardEventListener,
+  ) {
     invariant(false, 'Dummy method used for documentation');
   },
 
@@ -155,12 +158,12 @@ Keyboard = KeyboardEventEmitter;
 Keyboard.dismiss = dismissKeyboard;
 Keyboard.scheduleLayoutAnimation = function(event: KeyboardEvent) {
   const {duration, easing} = event;
-  if (duration) {
+  if (duration != null && duration !== 0) {
     LayoutAnimation.configureNext({
       duration: duration,
       update: {
         duration: duration,
-        type: (easing && LayoutAnimation.Types[easing]) || 'keyboard',
+        type: (easing != null && LayoutAnimation.Types[easing]) || 'keyboard',
       },
     });
   }
diff --git a/Libraries/Components/Keyboard/KeyboardAvoidingView.js b/Libraries/Components/Keyboard/KeyboardAvoidingView.js
index 4973fd4a0a3805..f8c620d9a495ae 100644
--- a/Libraries/Components/Keyboard/KeyboardAvoidingView.js
+++ b/Libraries/Components/Keyboard/KeyboardAvoidingView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -150,7 +150,7 @@ class KeyboardAvoidingView extends React.Component<Props, State> {
       children,
       contentContainerStyle,
       enabled,
-      keyboardVerticalOffset, // eslint-disable-line no-unused-vars
+      keyboardVerticalOffset,
       style,
       ...props
     } = this.props;
diff --git a/Libraries/Components/MaskedView/MaskedViewIOS.android.js b/Libraries/Components/MaskedView/MaskedViewIOS.android.js
index 49d44e1541dcd5..95d93f156b29cd 100644
--- a/Libraries/Components/MaskedView/MaskedViewIOS.android.js
+++ b/Libraries/Components/MaskedView/MaskedViewIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/MaskedView/MaskedViewIOS.ios.js b/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
index c65822a64b2d30..ce860ac2eeab40 100644
--- a/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
+++ b/Libraries/Components/MaskedView/MaskedViewIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,27 +8,26 @@
  * @flow
  */
 
-const PropTypes = require('prop-types');
 const React = require('React');
 const StyleSheet = require('StyleSheet');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
+
 const requireNativeComponent = require('requireNativeComponent');
 
 import type {ViewProps} from 'ViewPropTypes';
 
 const RCTMaskedView = requireNativeComponent('RCTMaskedView');
 
-type Props = {
+type Props = $ReadOnly<{|
   ...ViewProps,
 
-  children: any,
+  children: React.Node,
   /**
    * Should be a React element to be rendered and applied as the
    * mask for the child element.
    */
   maskElement: React.Element<any>,
-};
+|}>;
 
 /**
  * Renders the child view with a mask specified in the `maskElement` prop.
@@ -67,11 +66,6 @@ type Props = {
  *
  */
 class MaskedViewIOS extends React.Component<Props> {
-  static propTypes = {
-    ...ViewPropTypes,
-    maskElement: PropTypes.element.isRequired,
-  };
-
   _hasWarnedInvalidRenderMask = false;
 
   render() {
diff --git a/Libraries/Components/Navigation/NavigatorIOS.android.js b/Libraries/Components/Navigation/NavigatorIOS.android.js
deleted file mode 100644
index 260d559929796f..00000000000000
--- a/Libraries/Components/Navigation/NavigatorIOS.android.js
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-'use strict';
-
-module.exports = require('UnimplementedView');
diff --git a/Libraries/Components/Navigation/NavigatorIOS.ios.js b/Libraries/Components/Navigation/NavigatorIOS.ios.js
deleted file mode 100644
index 8f28d79147fe77..00000000000000
--- a/Libraries/Components/Navigation/NavigatorIOS.ios.js
+++ /dev/null
@@ -1,932 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow
- */
-
-'use strict';
-
-const EventEmitter = require('EventEmitter');
-const Image = require('Image');
-const RCTNavigatorManager = require('NativeModules').NavigatorManager;
-const React = require('React');
-const PropTypes = require('prop-types');
-const ReactNative = require('ReactNative');
-const StaticContainer = require('StaticContainer.react');
-const StyleSheet = require('StyleSheet');
-const TVEventHandler = require('TVEventHandler');
-const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
-
-const createReactClass = require('create-react-class');
-const invariant = require('fbjs/lib/invariant');
-const requireNativeComponent = require('requireNativeComponent');
-
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const keyMirror = require('fbjs/lib/keyMirror');
-
-const TRANSITIONER_REF = 'transitionerRef';
-
-let __uid = 0;
-function getuid() {
-  return __uid++;
-}
-
-class NavigatorTransitionerIOS extends React.Component<$FlowFixMeProps> {
-  requestSchedulingNavigation(cb) {
-    RCTNavigatorManager.requestSchedulingJavaScriptNavigation(
-      ReactNative.findNodeHandle(this),
-      cb,
-    );
-  }
-
-  render() {
-    return <RCTNavigator {...this.props} />;
-  }
-}
-
-const SystemIconLabels = {
-  done: true,
-  cancel: true,
-  edit: true,
-  save: true,
-  add: true,
-  compose: true,
-  reply: true,
-  action: true,
-  organize: true,
-  bookmarks: true,
-  search: true,
-  refresh: true,
-  stop: true,
-  camera: true,
-  trash: true,
-  play: true,
-  pause: true,
-  rewind: true,
-  'fast-forward': true,
-  undo: true,
-  redo: true,
-  'page-curl': true,
-};
-const SystemIcons = keyMirror(SystemIconLabels);
-
-type SystemButtonType = $Enum<typeof SystemIconLabels>;
-
-type Route = {
-  component: Function,
-  title: string,
-  titleImage?: Object,
-  passProps?: Object,
-  backButtonTitle?: string,
-  backButtonIcon?: Object,
-  leftButtonTitle?: string,
-  leftButtonIcon?: Object,
-  leftButtonSystemIcon?: SystemButtonType,
-  onLeftButtonPress?: Function,
-  rightButtonTitle?: string,
-  rightButtonIcon?: Object,
-  rightButtonSystemIcon?: SystemButtonType,
-  onRightButtonPress?: Function,
-  wrapperStyle?: any,
-};
-
-type State = {
-  idStack: Array<number>,
-  routeStack: Array<Route>,
-  requestedTopOfStack: number,
-  observedTopOfStack: number,
-  progress: number,
-  fromIndex: number,
-  toIndex: number,
-  makingNavigatorRequest: boolean,
-  updatingAllIndicesAtOrBeyond: ?number,
-};
-
-type Event = Object;
-
-/**
- * Think of `<NavigatorIOS>` as simply a component that renders an
- * `RCTNavigator`, and moves the `RCTNavigator`'s `requestedTopOfStack` pointer
- * forward and backward. The `RCTNavigator` interprets changes in
- * `requestedTopOfStack` to be pushes and pops of children that are rendered.
- * `<NavigatorIOS>` always ensures that whenever the `requestedTopOfStack`
- * pointer is moved, that we've also rendered enough children so that the
- * `RCTNavigator` can carry out the push/pop with those children.
- * `<NavigatorIOS>` also removes children that will no longer be needed
- * (after the pop of a child has been fully completed/animated out).
- */
-
-/**
- * `NavigatorIOS` is a wrapper around
- * [`UINavigationController`](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UINavigationController_Class/),
- * enabling you to implement a navigation stack. It works exactly the same as it
- * would on a native app using `UINavigationController`, providing the same
- * animations and behavior from UIKit.
- *
- * As the name implies, it is only available on iOS. Take a look at
- * [`React Navigation`](https://reactnavigation.org/) for a cross-platform
- * solution in JavaScript, or check out either of these components for native
- * solutions: [native-navigation](http://airbnb.io/native-navigation/),
- * [react-native-navigation](https://github.com/wix/react-native-navigation).
- *
- * To set up the navigator, provide the `initialRoute` prop with a route
- * object. A route object is used to describe each scene that your app
- * navigates to. `initialRoute` represents the first route in your navigator.
- *
- * ```
- * import PropTypes from 'prop-types';
- * import React, { Component } from 'react';
- * import { NavigatorIOS, Text } from 'react-native';
- *
- * export default class NavigatorIOSApp extends Component {
- *   render() {
- *     return (
- *       <NavigatorIOS
- *         initialRoute={{
- *           component: MyScene,
- *           title: 'My Initial Scene',
- *         }}
- *         style={{flex: 1}}
- *       />
- *     );
- *   }
- * }
- *
- * class MyScene extends Component {
- *   static propTypes = {
- *     title: PropTypes.string.isRequired,
- *     navigator: PropTypes.object.isRequired,
- *   }
- *
- *   _onForward = () => {
- *     this.props.navigator.push({
- *       title: 'Scene ' + nextIndex,
- *     });
- *   }
- *
- *   render() {
- *     return (
- *       <View>
- *         <Text>Current Scene: { this.props.title }</Text>
- *         <TouchableHighlight onPress={this._onForward}>
- *           <Text>Tap me to load the next scene</Text>
- *         </TouchableHighlight>
- *       </View>
- *     )
- *   }
- * }
- * ```
- *
- * In this code, the navigator renders the component specified in initialRoute,
- * which in this case is `MyScene`. This component will receive a `route` prop
- * and a `navigator` prop representing the navigator. The navigator's navigation
- * bar will render the title for the current scene, "My Initial Scene".
- *
- * You can optionally pass in a `passProps` property to your `initialRoute`.
- * `NavigatorIOS` passes this in as props to the rendered component:
- *
- * ```
- * initialRoute={{
- *   component: MyScene,
- *   title: 'My Initial Scene',
- *   passProps: { myProp: 'foo' }
- * }}
- * ```
- *
- * You can then access the props passed in via `{this.props.myProp}`.
- *
- * #### Handling Navigation
- *
- * To trigger navigation functionality such as pushing or popping a view, you
- * have access to a `navigator` object. The object is passed in as a prop to any
- * component that is rendered by `NavigatorIOS`. You can then call the
- * relevant methods to perform the navigation action you need:
- *
- * ```
- * class MyView extends Component {
- *   _handleBackPress() {
- *     this.props.navigator.pop();
- *   }
- *
- *   _handleNextPress(nextRoute) {
- *     this.props.navigator.push(nextRoute);
- *   }
- *
- *   render() {
- *     const nextRoute = {
- *       component: MyView,
- *       title: 'Bar That',
- *       passProps: { myProp: 'bar' }
- *     };
- *     return(
- *       <TouchableHighlight onPress={() => this._handleNextPress(nextRoute)}>
- *         <Text style={{marginTop: 200, alignSelf: 'center'}}>
- *           See you on the other nav {this.props.myProp}!
- *         </Text>
- *       </TouchableHighlight>
- *     );
- *   }
- * }
- * ```
- *
- * You can also trigger navigator functionality from the `NavigatorIOS`
- * component:
- *
- * ```
- * class NavvyIOS extends Component {
- *   _handleNavigationRequest() {
- *     this.refs.nav.push({
- *       component: MyView,
- *       title: 'Genius',
- *       passProps: { myProp: 'genius' },
- *     });
- *   }
- *
- *   render() {
- *     return (
- *       <NavigatorIOS
- *         ref='nav'
- *         initialRoute={{
- *           component: MyView,
- *           title: 'Foo This',
- *           passProps: { myProp: 'foo' },
- *           rightButtonTitle: 'Add',
- *           onRightButtonPress: () => this._handleNavigationRequest(),
- *         }}
- *         style={{flex: 1}}
- *       />
- *     );
- *   }
- * }
- * ```
- *
- * The code above adds a `_handleNavigationRequest` private method that is
- * invoked from the `NavigatorIOS` component when the right navigation bar item
- * is pressed. To get access to the navigator functionality, a reference to it
- * is saved in the `ref` prop and later referenced to push a new scene into the
- * navigation stack.
- *
- * #### Navigation Bar Configuration
- *
- * Props passed to `NavigatorIOS` will set the default configuration
- * for the navigation bar. Props passed as properties to a route object will set
- * the configuration for that route's navigation bar, overriding any props
- * passed to the `NavigatorIOS` component.
- *
- * ```
- * _handleNavigationRequest() {
- *   this.refs.nav.push({
- *     //...
- *     passProps: { myProp: 'genius' },
- *     barTintColor: '#996699',
- *   });
- * }
- *
- * render() {
- *   return (
- *     <NavigatorIOS
- *       //...
- *       style={{flex: 1}}
- *       barTintColor='#ffffcc'
- *     />
- *   );
- * }
- * ```
- *
- * In the example above the navigation bar color is changed when the new route
- * is pushed.
- *
- */
-const NavigatorIOS = createReactClass({
-  displayName: 'NavigatorIOS',
-
-  propTypes: {
-    /**
-     * NavigatorIOS uses `route` objects to identify child views, their props,
-     * and navigation bar configuration. Navigation operations such as push
-     * operations expect routes to look like this the `initialRoute`.
-     */
-    initialRoute: PropTypes.shape({
-      /**
-       * The React Class to render for this route
-       */
-      component: PropTypes.func.isRequired,
-
-      /**
-       * The title displayed in the navigation bar and the back button for this
-       * route.
-       */
-      title: PropTypes.string.isRequired,
-
-      /**
-       * If set, a title image will appear instead of the text title.
-       */
-      titleImage: Image.propTypes.source,
-
-      /**
-       * Use this to specify additional props to pass to the rendered
-       * component. `NavigatorIOS` will automatically pass in `route` and
-       * `navigator` props to the component.
-       */
-      passProps: PropTypes.object,
-
-      /**
-       * If set, the left navigation button image will be displayed using this
-       * source. Note that this doesn't apply to the header of the current
-       * view, but to those views that are subsequently pushed.
-       */
-      backButtonIcon: Image.propTypes.source,
-
-      /**
-       * If set, the left navigation button text will be set to this. Note that
-       * this doesn't apply to the left button of the current view, but to
-       * those views that are subsequently pushed
-       */
-      backButtonTitle: PropTypes.string,
-
-      /**
-       * If set, the left navigation button image will be displayed using
-       * this source.
-       */
-      leftButtonIcon: Image.propTypes.source,
-
-      /**
-       * If set, the left navigation button will display this text.
-       */
-      leftButtonTitle: PropTypes.string,
-
-      /**
-       * If set, the left header button will appear with this system icon
-       *
-       * Supported icons are `done`, `cancel`, `edit`, `save`, `add`,
-       * `compose`, `reply`, `action`, `organize`, `bookmarks`, `search`,
-       * `refresh`, `stop`, `camera`, `trash`, `play`, `pause`, `rewind`,
-       * `fast-forward`, `undo`, `redo`, and `page-curl`
-       */
-      leftButtonSystemIcon: PropTypes.oneOf(Object.keys(SystemIcons)),
-
-      /**
-       * This function will be invoked when the left navigation bar item is
-       * pressed.
-       */
-      onLeftButtonPress: PropTypes.func,
-
-      /**
-       * If set, the right navigation button image will be displayed using
-       * this source.
-       */
-      rightButtonIcon: Image.propTypes.source,
-
-      /**
-       * If set, the right navigation button will display this text.
-       */
-      rightButtonTitle: PropTypes.string,
-
-      /**
-       * If set, the right header button will appear with this system icon
-       *
-       * See leftButtonSystemIcon for supported icons
-       */
-      rightButtonSystemIcon: PropTypes.oneOf(Object.keys(SystemIcons)),
-
-      /**
-       * This function will be invoked when the right navigation bar item is
-       * pressed.
-       */
-      onRightButtonPress: PropTypes.func,
-
-      /**
-       * Styles for the navigation item containing the component.
-       */
-      wrapperStyle: ViewPropTypes.style,
-
-      /**
-       * Boolean value that indicates whether the navigation bar is hidden.
-       */
-      navigationBarHidden: PropTypes.bool,
-
-      /**
-       * Boolean value that indicates whether to hide the 1px hairline
-       * shadow.
-       */
-      shadowHidden: PropTypes.bool,
-
-      /**
-       * The color used for the buttons in the navigation bar.
-       */
-      tintColor: PropTypes.string,
-
-      /**
-       * The background color of the navigation bar.
-       */
-      barTintColor: PropTypes.string,
-
-      /**
-       * The style of the navigation bar. Supported values are 'default', 'black'.
-       * Use 'black' instead of setting `barTintColor` to black. This produces
-       * a navigation bar with the native iOS style with higher translucency.
-       */
-      barStyle: PropTypes.oneOf(['default', 'black']),
-
-      /**
-       * The text color of the navigation bar title.
-       */
-      titleTextColor: PropTypes.string,
-
-      /**
-       * Boolean value that indicates whether the navigation bar is
-       * translucent.
-       */
-      translucent: PropTypes.bool,
-    }).isRequired,
-
-    /**
-     * Boolean value that indicates whether the navigation bar is hidden
-     * by default.
-     */
-    navigationBarHidden: PropTypes.bool,
-
-    /**
-     * Boolean value that indicates whether to hide the 1px hairline shadow
-     * by default.
-     */
-    shadowHidden: PropTypes.bool,
-
-    /**
-     * The default wrapper style for components in the navigator.
-     * A common use case is to set the `backgroundColor` for every scene.
-     */
-    itemWrapperStyle: ViewPropTypes.style,
-
-    /**
-     * The default color used for the buttons in the navigation bar.
-     */
-    tintColor: PropTypes.string,
-
-    /**
-     * The default background color of the navigation bar.
-     */
-    barTintColor: PropTypes.string,
-
-    /**
-     * The style of the navigation bar. Supported values are 'default', 'black'.
-     * Use 'black' instead of setting `barTintColor` to black. This produces
-     * a navigation bar with the native iOS style with higher translucency.
-     */
-    barStyle: PropTypes.oneOf(['default', 'black']),
-
-    /**
-     * The default text color of the navigation bar title.
-     */
-    titleTextColor: PropTypes.string,
-
-    /**
-     * Boolean value that indicates whether the navigation bar is
-     * translucent by default
-     */
-    translucent: PropTypes.bool,
-
-    /**
-     * Boolean value that indicates whether the interactive pop gesture is
-     * enabled. This is useful for enabling/disabling the back swipe navigation
-     * gesture.
-     *
-     * If this prop is not provided, the default behavior is for the back swipe
-     * gesture to be enabled when the navigation bar is shown and disabled when
-     * the navigation bar is hidden. Once you've provided the
-     * `interactivePopGestureEnabled` prop, you can never restore the default
-     * behavior.
-     */
-    interactivePopGestureEnabled: PropTypes.bool,
-  },
-
-  navigator: (undefined: ?Object),
-
-  UNSAFE_componentWillMount: function() {
-    // Precompute a pack of callbacks that's frequently generated and passed to
-    // instances.
-    this.navigator = {
-      push: this.push,
-      pop: this.pop,
-      popN: this.popN,
-      replace: this.replace,
-      replaceAtIndex: this.replaceAtIndex,
-      replacePrevious: this.replacePrevious,
-      replacePreviousAndPop: this.replacePreviousAndPop,
-      resetTo: this.resetTo,
-      popToRoute: this.popToRoute,
-      popToTop: this.popToTop,
-    };
-  },
-
-  componentDidMount: function() {
-    this._enableTVEventHandler();
-  },
-
-  componentWillUnmount: function() {
-    this._disableTVEventHandler();
-  },
-
-  getDefaultProps: function(): Object {
-    return {
-      translucent: true,
-    };
-  },
-
-  getInitialState: function(): State {
-    return {
-      idStack: [getuid()],
-      routeStack: [this.props.initialRoute],
-      // The navigation index that we wish to push/pop to.
-      requestedTopOfStack: 0,
-      // The last index that native has sent confirmation of completed push/pop
-      // for. At this point, we can discard any views that are beyond the
-      // `requestedTopOfStack`. A value of `null` means we have not received
-      // any confirmation, ever. We may receive an `observedTopOfStack` without
-      // ever requesting it - native can instigate pops of its own with the
-      // backswipe gesture.
-      observedTopOfStack: 0,
-      progress: 1,
-      fromIndex: 0,
-      toIndex: 0,
-      // Whether or not we are making a navigator request to push/pop. (Used
-      // for performance optimization).
-      makingNavigatorRequest: false,
-      // Whether or not we are updating children of navigator and if so (not
-      // `null`) which index marks the beginning of all updates. Used for
-      // performance optimization.
-      updatingAllIndicesAtOrBeyond: 0,
-    };
-  },
-
-  _toFocusOnNavigationComplete: (undefined: any),
-
-  _handleFocusRequest: function(item: any) {
-    if (this.state.makingNavigatorRequest) {
-      this._toFocusOnNavigationComplete = item;
-    } else {
-      this._getFocusEmitter().emit('focus', item);
-    }
-  },
-
-  _focusEmitter: (undefined: ?EventEmitter),
-
-  _getFocusEmitter: function(): EventEmitter {
-    // Flow not yet tracking assignments to instance fields.
-    let focusEmitter = this._focusEmitter;
-    if (!focusEmitter) {
-      focusEmitter = new EventEmitter();
-      this._focusEmitter = focusEmitter;
-    }
-    return focusEmitter;
-  },
-
-  getChildContext: function(): {
-    onFocusRequested: Function,
-    focusEmitter: EventEmitter,
-  } {
-    return {
-      onFocusRequested: this._handleFocusRequest,
-      focusEmitter: this._getFocusEmitter(),
-    };
-  },
-
-  childContextTypes: {
-    onFocusRequested: PropTypes.func,
-    focusEmitter: PropTypes.instanceOf(EventEmitter),
-  },
-
-  _tryLockNavigator: function(cb: () => void) {
-    this.refs[TRANSITIONER_REF].requestSchedulingNavigation(
-      acquiredLock => acquiredLock && cb(),
-    );
-  },
-
-  _handleNavigatorStackChanged: function(e: Event) {
-    const newObservedTopOfStack = e.nativeEvent.stackLength - 1;
-
-    invariant(
-      newObservedTopOfStack <= this.state.requestedTopOfStack,
-      'No navigator item should be pushed without JS knowing about it %s %s',
-      newObservedTopOfStack,
-      this.state.requestedTopOfStack,
-    );
-    const wasWaitingForConfirmation =
-      this.state.requestedTopOfStack !== this.state.observedTopOfStack;
-    if (wasWaitingForConfirmation) {
-      invariant(
-        newObservedTopOfStack === this.state.requestedTopOfStack,
-        'If waiting for observedTopOfStack to reach requestedTopOfStack, ' +
-          'the only valid observedTopOfStack should be requestedTopOfStack.',
-      );
-    }
-    // Mark the most recent observation regardless of if we can lock the
-    // navigator. `observedTopOfStack` merely represents what we've observed
-    // and this first `setState` is only executed to update debugging
-    // overlays/navigation bar.
-    // Also reset progress, toIndex, and fromIndex as they might not end
-    // in the correct states for a two possible reasons:
-    // Progress isn't always 0 or 1 at the end, the system rounds
-    // If the Navigator is offscreen these values won't be updated
-    // TOOD: Revisit this decision when no longer relying on native navigator.
-    const nextState = {
-      observedTopOfStack: newObservedTopOfStack,
-      makingNavigatorRequest: false,
-      updatingAllIndicesAtOrBeyond: null,
-      progress: 1,
-      toIndex: newObservedTopOfStack,
-      fromIndex: newObservedTopOfStack,
-    };
-    this.setState(nextState, this._eliminateUnneededChildren);
-  },
-
-  _eliminateUnneededChildren: function() {
-    // Updating the indices that we're deleting and that's all. (Truth: Nothing
-    // even uses the indices in this case, but let's make this describe the
-    // truth anyways).
-    const updatingAllIndicesAtOrBeyond =
-      this.state.routeStack.length > this.state.observedTopOfStack + 1
-        ? this.state.observedTopOfStack + 1
-        : null;
-    this.setState({
-      idStack: this.state.idStack.slice(0, this.state.observedTopOfStack + 1),
-      routeStack: this.state.routeStack.slice(
-        0,
-        this.state.observedTopOfStack + 1,
-      ),
-      // Now we rerequest the top of stack that we observed.
-      requestedTopOfStack: this.state.observedTopOfStack,
-      makingNavigatorRequest: true,
-      updatingAllIndicesAtOrBeyond: updatingAllIndicesAtOrBeyond,
-    });
-  },
-
-  /**
-   * Navigate forward to a new route.
-   * @param route The new route to navigate to.
-   */
-  push: function(route: Route) {
-    invariant(!!route, 'Must supply route to push');
-    // Make sure all previous requests are caught up first. Otherwise reject.
-    if (this.state.requestedTopOfStack === this.state.observedTopOfStack) {
-      this._tryLockNavigator(() => {
-        const nextStack = this.state.routeStack.concat([route]);
-        const nextIDStack = this.state.idStack.concat([getuid()]);
-        this.setState({
-          // We have to make sure that we've also supplied enough views to
-          // satisfy our request to adjust the `requestedTopOfStack`.
-          idStack: nextIDStack,
-          routeStack: nextStack,
-          requestedTopOfStack: nextStack.length - 1,
-          makingNavigatorRequest: true,
-          updatingAllIndicesAtOrBeyond: nextStack.length - 1,
-        });
-      });
-    }
-  },
-
-  /**
-   * Go back N scenes at once. When N=1, behavior matches `pop()`.
-   * @param n The number of scenes to pop.
-   */
-  popN: function(n: number) {
-    if (n === 0) {
-      return;
-    }
-    // Make sure all previous requests are caught up first. Otherwise reject.
-    if (this.state.requestedTopOfStack === this.state.observedTopOfStack) {
-      if (this.state.requestedTopOfStack > 0) {
-        this._tryLockNavigator(() => {
-          const newRequestedTopOfStack = this.state.requestedTopOfStack - n;
-          invariant(newRequestedTopOfStack >= 0, 'Cannot pop below 0');
-          this.setState({
-            requestedTopOfStack: newRequestedTopOfStack,
-            makingNavigatorRequest: true,
-            updatingAllIndicesAtOrBeyond: this.state.requestedTopOfStack - n,
-          });
-        });
-      }
-    }
-  },
-
-  /**
-   * Pop back to the previous scene.
-   */
-  pop: function() {
-    this.popN(1);
-  },
-
-  /**
-   * Replace a route in the navigation stack.
-   *
-   * @param route The new route that will replace the specified one.
-   * @param index The route into the stack that should be replaced.
-   *    If it is negative, it counts from the back of the stack.
-   */
-  replaceAtIndex: function(route: Route, index: number) {
-    invariant(!!route, 'Must supply route to replace');
-    if (index < 0) {
-      index += this.state.routeStack.length;
-    }
-
-    if (this.state.routeStack.length <= index) {
-      return;
-    }
-
-    // I don't believe we need to lock for a replace since there's no
-    // navigation actually happening
-    const nextIDStack = this.state.idStack.slice();
-    const nextRouteStack = this.state.routeStack.slice();
-    nextIDStack[index] = getuid();
-    nextRouteStack[index] = route;
-
-    this.setState({
-      idStack: nextIDStack,
-      routeStack: nextRouteStack,
-      makingNavigatorRequest: false,
-      updatingAllIndicesAtOrBeyond: index,
-    });
-  },
-
-  /**
-   * Replace the route for the current scene and immediately
-   * load the view for the new route.
-   * @param route The new route to navigate to.
-   */
-  replace: function(route: Route) {
-    this.replaceAtIndex(route, -1);
-  },
-
-  /**
-   * Replace the route/view for the previous scene.
-   * @param route The new route to will replace the previous scene.
-   */
-  replacePrevious: function(route: Route) {
-    this.replaceAtIndex(route, -2);
-  },
-
-  /**
-   * Go back to the topmost item in the navigation stack.
-   */
-  popToTop: function() {
-    this.popToRoute(this.state.routeStack[0]);
-  },
-
-  /**
-   * Go back to the item for a particular route object.
-   * @param route The new route to navigate to.
-   */
-  popToRoute: function(route: Route) {
-    const indexOfRoute = this.state.routeStack.indexOf(route);
-    invariant(
-      indexOfRoute !== -1,
-      "Calling pop to route for a route that doesn't exist!",
-    );
-    const numToPop = this.state.routeStack.length - indexOfRoute - 1;
-    this.popN(numToPop);
-  },
-
-  /**
-   * Replaces the previous route/view and transitions back to it.
-   * @param route The new route that replaces the previous scene.
-   */
-  replacePreviousAndPop: function(route: Route) {
-    // Make sure all previous requests are caught up first. Otherwise reject.
-    if (this.state.requestedTopOfStack !== this.state.observedTopOfStack) {
-      return;
-    }
-    if (this.state.routeStack.length < 2) {
-      return;
-    }
-    this._tryLockNavigator(() => {
-      this.replacePrevious(route);
-      this.setState({
-        requestedTopOfStack: this.state.requestedTopOfStack - 1,
-        makingNavigatorRequest: true,
-      });
-    });
-  },
-
-  /**
-   * Replaces the top item and pop to it.
-   * @param route The new route that will replace the topmost item.
-   */
-  resetTo: function(route: Route) {
-    invariant(!!route, 'Must supply route to push');
-    // Make sure all previous requests are caught up first. Otherwise reject.
-    if (this.state.requestedTopOfStack !== this.state.observedTopOfStack) {
-      return;
-    }
-    this.replaceAtIndex(route, 0);
-    this.popToRoute(route);
-  },
-
-  _handleNavigationComplete: function(e: Event) {
-    // Don't propagate to other NavigatorIOS instances this is nested in:
-    e.stopPropagation();
-
-    if (this._toFocusOnNavigationComplete) {
-      this._getFocusEmitter().emit('focus', this._toFocusOnNavigationComplete);
-      this._toFocusOnNavigationComplete = null;
-    }
-    this._handleNavigatorStackChanged(e);
-  },
-
-  _routeToStackItem: function(routeArg: Route, i: number) {
-    const {component, wrapperStyle, passProps, ...route} = routeArg;
-    const {itemWrapperStyle, ...props} = this.props;
-    const shouldUpdateChild =
-      this.state.updatingAllIndicesAtOrBeyond != null &&
-      this.state.updatingAllIndicesAtOrBeyond >= i;
-    const Component = component;
-    return (
-      <StaticContainer key={'nav' + i} shouldUpdate={shouldUpdateChild}>
-        <RCTNavigatorItem
-          {...props}
-          {...route}
-          style={[styles.stackItem, itemWrapperStyle, wrapperStyle]}>
-          <Component navigator={this.navigator} route={route} {...passProps} />
-        </RCTNavigatorItem>
-      </StaticContainer>
-    );
-  },
-
-  _renderNavigationStackItems: function() {
-    const shouldRecurseToNavigator =
-      this.state.makingNavigatorRequest ||
-      this.state.updatingAllIndicesAtOrBeyond !== null;
-    // If not recursing update to navigator at all, may as well avoid
-    // computation of navigator children.
-    const items = shouldRecurseToNavigator
-      ? this.state.routeStack.map(this._routeToStackItem)
-      : null;
-    return (
-      <StaticContainer shouldUpdate={shouldRecurseToNavigator}>
-        <NavigatorTransitionerIOS
-          ref={TRANSITIONER_REF}
-          style={styles.transitioner}
-          // $FlowFixMe(>=0.41.0)
-          vertical={this.props.vertical}
-          requestedTopOfStack={this.state.requestedTopOfStack}
-          onNavigationComplete={this._handleNavigationComplete}
-          interactivePopGestureEnabled={
-            this.props.interactivePopGestureEnabled
-          }>
-          {items}
-        </NavigatorTransitionerIOS>
-      </StaticContainer>
-    );
-  },
-
-  _tvEventHandler: (undefined: ?TVEventHandler),
-
-  _enableTVEventHandler: function() {
-    this._tvEventHandler = new TVEventHandler();
-    this._tvEventHandler.enable(this, function(cmp, evt) {
-      if (evt && evt.eventType === 'menu') {
-        cmp.pop();
-      }
-    });
-  },
-
-  _disableTVEventHandler: function() {
-    if (this._tvEventHandler) {
-      this._tvEventHandler.disable();
-      delete this._tvEventHandler;
-    }
-  },
-
-  render: function() {
-    return (
-      // $FlowFixMe(>=0.41.0)
-      <View style={this.props.style}>{this._renderNavigationStackItems()}</View>
-    );
-  },
-});
-
-const styles = StyleSheet.create({
-  stackItem: {
-    backgroundColor: 'white',
-    overflow: 'hidden',
-    position: 'absolute',
-    top: 0,
-    left: 0,
-    right: 0,
-    bottom: 0,
-  },
-  transitioner: {
-    flex: 1,
-  },
-});
-
-const RCTNavigator = requireNativeComponent('RCTNavigator');
-const RCTNavigatorItem = requireNativeComponent('RCTNavItem');
-
-module.exports = NavigatorIOS;
diff --git a/Libraries/Components/Picker/Picker.js b/Libraries/Components/Picker/Picker.js
index 7518793c0c8c19..6dd532d7e625e3 100644
--- a/Libraries/Components/Picker/Picker.js
+++ b/Libraries/Components/Picker/Picker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,64 +10,103 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const PickerIOS = require('PickerIOS');
 const PickerAndroid = require('PickerAndroid');
+const PickerIOS = require('PickerIOS');
 const Platform = require('Platform');
 const React = require('React');
-const PropTypes = require('prop-types');
-const StyleSheetPropType = require('StyleSheetPropType');
-const TextStylePropTypes = require('TextStylePropTypes');
 const UnimplementedView = require('UnimplementedView');
-const ViewPropTypes = require('ViewPropTypes');
-const ViewStylePropTypes = require('ViewStylePropTypes');
-
-const itemStylePropType = StyleSheetPropType(TextStylePropTypes);
 
-const pickerStyleType = StyleSheetPropType({
-  ...ViewStylePropTypes,
-  color: ColorPropType,
-});
+import type {TextStyleProp} from 'StyleSheet';
+import type {ColorValue} from 'StyleSheetTypes';
 
 const MODE_DIALOG = 'dialog';
 const MODE_DROPDOWN = 'dropdown';
 
-/**
- * Individual selectable item in a Picker.
- */
-class PickerItem extends React.Component<{
+type PickerItemProps = $ReadOnly<{|
+  /**
+   * Text to display for this item.
+   */
   label: string,
+
+  /**
+   * The value to be passed to picker's `onValueChange` callback when
+   * this item is selected. Can be a string or an integer.
+   */
   value?: any,
-  color?: ColorPropType,
+
+  /**
+   * Color of this item's text.
+   * @platform android
+   */
+  color?: ColorValue,
+
+  /**
+   * Used to locate the item in end-to-end tests.
+   */
   testID?: string,
-}> {
-  static propTypes = {
-    /**
-     * Text to display for this item.
-     */
-    label: PropTypes.string.isRequired,
-    /**
-     * The value to be passed to picker's `onValueChange` callback when
-     * this item is selected. Can be a string or an integer.
-     */
-    value: PropTypes.any,
-    /**
-     * Color of this item's text.
-     * @platform android
-     */
-    color: ColorPropType,
-    /**
-     * Used to locate the item in end-to-end tests.
-     */
-    testID: PropTypes.string,
-  };
+|}>;
 
+/**
+ * Individual selectable item in a Picker.
+ */
+class PickerItem extends React.Component<PickerItemProps> {
   render() {
     // The items are not rendered directly
     throw null;
   }
 }
 
+type PickerProps = $ReadOnly<{|
+  children?: React.Node,
+  style?: ?TextStyleProp,
+
+  /**
+   * Value matching value of one of the items. Can be a string or an integer.
+   */
+  selectedValue?: any,
+
+  /**
+   * Callback for when an item is selected. This is called with the following parameters:
+   *   - `itemValue`: the `value` prop of the item that was selected
+   *   - `itemPosition`: the index of the selected item in this picker
+   */
+  onValueChange?: ?(newValue: any, newIndex: number) => mixed,
+
+  /**
+   * If set to false, the picker will be disabled, i.e. the user will not be able to make a
+   * selection.
+   * @platform android
+   */
+  enabled?: ?boolean,
+
+  /**
+   * On Android, specifies how to display the selection items when the user taps on the picker:
+   *
+   *   - 'dialog': Show a modal dialog. This is the default.
+   *   - 'dropdown': Shows a dropdown anchored to the picker view
+   *
+   * @platform android
+   */
+  mode?: ?('dialog' | 'dropdown'),
+
+  /**
+   * Style to apply to each of the item labels.
+   * @platform ios
+   */
+  itemStyle?: ?TextStyleProp,
+
+  /**
+   * Prompt string for this picker, used on Android in dialog mode as the title of the dialog.
+   * @platform android
+   */
+  prompt?: ?string,
+
+  /**
+   * Used to locate this view in end-to-end tests.
+   */
+  testID?: ?string,
+|}>;
+
 /**
  * Renders the native picker component on iOS and Android. Example:
  *
@@ -78,16 +117,7 @@ class PickerItem extends React.Component<{
  *       <Picker.Item label="JavaScript" value="js" />
  *     </Picker>
  */
-class Picker extends React.Component<{
-  style?: $FlowFixMe,
-  selectedValue?: any,
-  onValueChange?: Function,
-  enabled?: boolean,
-  mode?: 'dialog' | 'dropdown',
-  itemStyle?: $FlowFixMe,
-  prompt?: string,
-  testID?: string,
-}> {
+class Picker extends React.Component<PickerProps> {
   /**
    * On Android, display the options in a dialog.
    */
@@ -104,61 +134,18 @@ class Picker extends React.Component<{
     mode: MODE_DIALOG,
   };
 
-  // $FlowFixMe(>=0.41.0)
-  static propTypes = {
-    ...ViewPropTypes,
-    style: pickerStyleType,
-    /**
-     * Value matching value of one of the items. Can be a string or an integer.
-     */
-    selectedValue: PropTypes.any,
-    /**
-     * Callback for when an item is selected. This is called with the following parameters:
-     *   - `itemValue`: the `value` prop of the item that was selected
-     *   - `itemPosition`: the index of the selected item in this picker
-     */
-    onValueChange: PropTypes.func,
-    /**
-     * If set to false, the picker will be disabled, i.e. the user will not be able to make a
-     * selection.
-     * @platform android
-     */
-    enabled: PropTypes.bool,
-    /**
-     * On Android, specifies how to display the selection items when the user taps on the picker:
-     *
-     *   - 'dialog': Show a modal dialog. This is the default.
-     *   - 'dropdown': Shows a dropdown anchored to the picker view
-     *
-     * @platform android
-     */
-    mode: PropTypes.oneOf(['dialog', 'dropdown']),
-    /**
-     * Style to apply to each of the item labels.
-     * @platform ios
-     */
-    itemStyle: itemStylePropType,
-    /**
-     * Prompt string for this picker, used on Android in dialog mode as the title of the dialog.
-     * @platform android
-     */
-    prompt: PropTypes.string,
-    /**
-     * Used to locate this view in end-to-end tests.
-     */
-    testID: PropTypes.string,
-  };
-
   render() {
     if (
       Platform.OS === 'ios' ||
       Platform.OS === 'macos' /* TODO(macOS ISS#2323203) */
     ) {
-      // $FlowFixMe found when converting React.createClass to ES6
+      /* $FlowFixMe(>=0.81.0 site=react_native_ios_fb) This suppression was
+       * added when renaming suppression sites. */
       return <PickerIOS {...this.props}>{this.props.children}</PickerIOS>;
     } else if (Platform.OS === 'android') {
       return (
-        // $FlowFixMe found when converting React.createClass to ES6
+        /* $FlowFixMe(>=0.81.0 site=react_native_android_fb) This suppression
+         * was added when renaming suppression sites. */
         <PickerAndroid {...this.props}>{this.props.children}</PickerAndroid>
       );
     } else {
diff --git a/Libraries/Components/Picker/PickerAndroid.android.js b/Libraries/Components/Picker/PickerAndroid.android.js
index 7066b942ad222c..19d9b7d1921bb1 100644
--- a/Libraries/Components/Picker/PickerAndroid.android.js
+++ b/Libraries/Components/Picker/PickerAndroid.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,8 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
 const React = require('React');
-const ReactPropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
-const StyleSheetPropType = require('StyleSheetPropType');
-const ViewPropTypes = require('ViewPropTypes');
-const ViewStylePropTypes = require('ViewStylePropTypes');
 
 const processColor = require('processColor');
 const requireNativeComponent = require('requireNativeComponent');
@@ -27,41 +22,30 @@ const DialogPicker = requireNativeComponent('AndroidDialogPicker');
 const REF_PICKER = 'picker';
 const MODE_DROPDOWN = 'dropdown';
 
-const pickerStyleType = StyleSheetPropType({
-  ...ViewStylePropTypes,
-  color: ColorPropType,
-});
-
-type Event = Object;
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {TextStyleProp} from 'StyleSheet';
+
+type PickerAndroidChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    position: number,
+  |}>,
+>;
+
+type PickerAndroidProps = $ReadOnly<{|
+  children?: React.Node,
+  style?: ?TextStyleProp,
+  selectedValue?: any,
+  enabled?: ?boolean,
+  mode?: ?('dialog' | 'dropdown'),
+  onValueChange?: ?(newValue: any, newIndex: number) => mixed,
+  prompt?: ?string,
+  testID?: string,
+|}>;
 
 /**
  * Not exposed as a public API - use <Picker> instead.
  */
-class PickerAndroid extends React.Component<
-  {
-    style?: $FlowFixMe,
-    selectedValue?: any,
-    enabled?: boolean,
-    mode?: 'dialog' | 'dropdown',
-    onValueChange?: Function,
-    prompt?: string,
-    testID?: string,
-  },
-  *,
-> {
-  /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
-   * when making Flow check .android.js files. */
-  static propTypes = {
-    ...ViewPropTypes,
-    style: pickerStyleType,
-    selectedValue: ReactPropTypes.any,
-    enabled: ReactPropTypes.bool,
-    mode: ReactPropTypes.oneOf(['dialog', 'dropdown']),
-    onValueChange: ReactPropTypes.func,
-    prompt: ReactPropTypes.string,
-    testID: ReactPropTypes.string,
-  };
-
+class PickerAndroid extends React.Component<PickerAndroidProps, *> {
   /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
    * when making Flow check .android.js files. */
   constructor(props, context) {
@@ -122,7 +106,7 @@ class PickerAndroid extends React.Component<
     return <Picker ref={REF_PICKER} {...nativeProps} />;
   }
 
-  _onChange = (event: Event) => {
+  _onChange = (event: PickerAndroidChangeEvent) => {
     if (this.props.onValueChange) {
       const position = event.nativeEvent.position;
       if (position >= 0) {
diff --git a/Libraries/Components/Picker/PickerAndroid.ios.js b/Libraries/Components/Picker/PickerAndroid.ios.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/Components/Picker/PickerAndroid.ios.js
+++ b/Libraries/Components/Picker/PickerAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Picker/PickerIOS.android.js b/Libraries/Components/Picker/PickerIOS.android.js
index 36acfe18342b6f..006c5b4d1ae82f 100644
--- a/Libraries/Components/Picker/PickerIOS.android.js
+++ b/Libraries/Components/Picker/PickerIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Picker/PickerIOS.ios.js b/Libraries/Components/Picker/PickerIOS.ios.js
index 897a3d7da00f2e..b5e58dc5c1af4a 100644
--- a/Libraries/Components/Picker/PickerIOS.ios.js
+++ b/Libraries/Components/Picker/PickerIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -48,6 +48,7 @@ type RCTPickerIOSType = Class<
       onStartShouldSetResponder: () => boolean,
       selectedIndex: number,
       style?: ?TextStyleProp,
+      testID?: ?string,
     |}>,
   >,
 >;
@@ -115,6 +116,7 @@ class PickerIOS extends React.Component<Props, State> {
           ref={picker => {
             this._picker = picker;
           }}
+          testID={this.props.testID}
           style={[styles.pickerIOS, this.props.itemStyle]}
           items={this.state.items}
           selectedIndex={this.state.selectedIndex}
diff --git a/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.android.js b/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.android.js
index f343e2e5452044..9512fd1dfabec2 100644
--- a/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.android.js
+++ b/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,7 +19,7 @@ import type {ViewProps} from 'ViewPropTypes';
 
 const AndroidProgressBar = requireNativeComponent('AndroidProgressBar');
 
-type Props = $ReadOnly<{|
+export type ProgressBarAndroidProps = $ReadOnly<{|
   ...ViewProps,
 
   /**
@@ -83,7 +83,7 @@ type Props = $ReadOnly<{|
  * ```
  */
 const ProgressBarAndroid = (
-  props: Props,
+  props: ProgressBarAndroidProps,
   forwardedRef: ?React.Ref<'AndroidProgressBar'>,
 ) => {
   return <AndroidProgressBar {...props} ref={forwardedRef} />;
@@ -98,4 +98,6 @@ ProgressBarAndroidToExport.defaultProps = {
   animating: true,
 };
 
-module.exports = (ProgressBarAndroidToExport: Class<NativeComponent<Props>>);
+module.exports = (ProgressBarAndroidToExport: Class<
+  NativeComponent<ProgressBarAndroidProps>,
+>);
diff --git a/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.ios.js b/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.ios.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.ios.js
+++ b/Libraries/Components/ProgressBarAndroid/ProgressBarAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ProgressViewIOS/ProgressViewIOS.android.js b/Libraries/Components/ProgressViewIOS/ProgressViewIOS.android.js
index 8caa73db33e494..1b5a1436e4f1ba 100644
--- a/Libraries/Components/ProgressViewIOS/ProgressViewIOS.android.js
+++ b/Libraries/Components/ProgressViewIOS/ProgressViewIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ProgressViewIOS/ProgressViewIOS.ios.js b/Libraries/Components/ProgressViewIOS/ProgressViewIOS.ios.js
index ea92fccb980583..2d9ae4b17f5c5d 100644
--- a/Libraries/Components/ProgressViewIOS/ProgressViewIOS.ios.js
+++ b/Libraries/Components/ProgressViewIOS/ProgressViewIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,82 +10,69 @@
 
 'use strict';
 
-const Image = require('Image');
-const NativeMethodsMixin = require('NativeMethodsMixin');
 const React = require('React');
-const ReactNative = require('ReactNative');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
-const ViewPropTypes = require('ViewPropTypes');
 
-const createReactClass = require('create-react-class');
 const requireNativeComponent = require('requireNativeComponent');
 
+import type {NativeComponent} from 'ReactNative';
 import type {ImageSource} from 'ImageSource';
 import type {ColorValue} from 'StyleSheetTypes';
 import type {ViewProps} from 'ViewPropTypes';
 
-const RCTProgressView = requireNativeComponent('RCTProgressView');
-
 type Props = $ReadOnly<{|
   ...ViewProps,
+
+  /**
+   * The progress bar style.
+   */
   progressViewStyle?: ?('default' | 'bar'),
+
+  /**
+   * The progress value (between 0 and 1).
+   */
   progress?: ?number,
+
+  /**
+   * The tint color of the progress bar itself.
+   */
   progressTintColor?: ?ColorValue,
-  trackTintColor?: ?string,
+
+  /**
+   * The tint color of the progress bar track.
+   */
+  trackTintColor?: ?ColorValue,
+
+  /**
+   * A stretchable image to display as the progress bar.
+   */
   progressImage?: ?ImageSource,
+
+  /**
+   * A stretchable image to display behind the progress bar.
+   */
   trackImage?: ?ImageSource,
 |}>;
 
+type NativeProgressViewIOS = Class<NativeComponent<Props>>;
+
+const RCTProgressView = ((requireNativeComponent(
+  'RCTProgressView',
+): any): NativeProgressViewIOS);
+
 /**
  * Use `ProgressViewIOS` to render a UIProgressView on iOS.
  */
-const ProgressViewIOS = createReactClass({
-  displayName: 'ProgressViewIOS',
-  mixins: [NativeMethodsMixin],
-
-  propTypes: {
-    ...ViewPropTypes,
-    /**
-     * The progress bar style.
-     */
-    progressViewStyle: PropTypes.oneOf(['default', 'bar']),
-
-    /**
-     * The progress value (between 0 and 1).
-     */
-    progress: PropTypes.number,
-
-    /**
-     * The tint color of the progress bar itself.
-     */
-    progressTintColor: PropTypes.string,
-
-    /**
-     * The tint color of the progress bar track.
-     */
-    trackTintColor: PropTypes.string,
-
-    /**
-     * A stretchable image to display as the progress bar.
-     */
-    progressImage: Image.propTypes.source,
-
-    /**
-     * A stretchable image to display behind the progress bar.
-     */
-    trackImage: Image.propTypes.source,
-  },
-
-  render: function() {
-    return (
-      <RCTProgressView
-        {...this.props}
-        style={[styles.progressView, this.props.style]}
-      />
-    );
-  },
-});
+const ProgressViewIOS = (
+  props: Props,
+  forwardedRef?: ?React.Ref<typeof RCTProgressView>,
+) => (
+  <RCTProgressView
+    {...props}
+    style={[styles.progressView, props.style]}
+    ref={forwardedRef}
+  />
+);
 
 const styles = StyleSheet.create({
   progressView: {
@@ -93,6 +80,7 @@ const styles = StyleSheet.create({
   },
 });
 
-module.exports = ((ProgressViewIOS: any): Class<
-  ReactNative.NativeComponent<Props>,
->);
+// $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+const ProgressViewIOSWithRef = React.forwardRef(ProgressViewIOS);
+
+module.exports = (ProgressViewIOSWithRef: NativeProgressViewIOS);
diff --git a/Libraries/Components/RefreshControl/RefreshControl.js b/Libraries/Components/RefreshControl/RefreshControl.js
index 9b287cc4a180b9..556b06e5d57536 100644
--- a/Libraries/Components/RefreshControl/RefreshControl.js
+++ b/Libraries/Components/RefreshControl/RefreshControl.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,21 +15,23 @@ const React = require('React');
 const {NativeComponent} = require('ReactNative');
 
 const requireNativeComponent = require('requireNativeComponent');
-const nullthrows = require('fbjs/lib/nullthrows');
+const nullthrows = require('nullthrows');
 
 import type {ColorValue} from 'StyleSheetTypes';
 import type {ViewProps} from 'ViewPropTypes';
 
+let RefreshLayoutConsts;
 if (Platform.OS === 'android') {
-  const AndroidSwipeRefreshLayout = require('UIManager')
-    .AndroidSwipeRefreshLayout;
-  var RefreshLayoutConsts = AndroidSwipeRefreshLayout
+  const AndroidSwipeRefreshLayout = require('UIManager').getViewManagerConfig(
+    'AndroidSwipeRefreshLayout',
+  );
+  RefreshLayoutConsts = AndroidSwipeRefreshLayout
     ? AndroidSwipeRefreshLayout.Constants
     : {SIZE: {}};
 } else {
-  var RefreshLayoutConsts = {SIZE: {}};
+  RefreshLayoutConsts = {SIZE: {}};
 }
-type NativeRefreshControlType = Class<NativeComponent<Props>>;
+type NativeRefreshControlType = Class<NativeComponent<RefreshControlProps>>;
 
 const NativeRefreshControl: NativeRefreshControlType =
   Platform.OS === 'ios'
@@ -77,7 +79,7 @@ type AndroidProps = $ReadOnly<{|
   progressViewOffset?: ?number,
 |}>;
 
-type Props = $ReadOnly<{|
+export type RefreshControlProps = $ReadOnly<{|
   ...ViewProps,
   ...IOSProps,
   ...AndroidProps,
@@ -85,7 +87,7 @@ type Props = $ReadOnly<{|
   /**
    * Called when the view starts refreshing.
    */
-  onRefresh?: ?Function,
+  onRefresh?: ?() => void,
 
   /**
    * Whether the view should be indicating an active refresh.
@@ -138,7 +140,7 @@ type Props = $ReadOnly<{|
  * __Note:__ `refreshing` is a controlled prop, this is why it needs to be set to true
  * in the `onRefresh` function otherwise the refresh indicator will stop immediately.
  */
-class RefreshControl extends React.Component<Props> {
+class RefreshControl extends React.Component<RefreshControlProps> {
   static SIZE = RefreshLayoutConsts.SIZE;
 
   _nativeRef: ?React.ElementRef<NativeRefreshControlType> = null;
@@ -148,7 +150,7 @@ class RefreshControl extends React.Component<Props> {
     this._lastNativeRefreshing = this.props.refreshing;
   }
 
-  componentDidUpdate(prevProps: Props) {
+  componentDidUpdate(prevProps: RefreshControlProps) {
     // RefreshControl is a controlled component so if the native refreshing
     // value doesn't match the current js refreshing prop update it to
     // the js value.
diff --git a/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js b/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
index 8e85742ce4c4da..daa576350aa120 100644
--- a/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
+++ b/Libraries/Components/RefreshControl/__mocks__/RefreshControlMock.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/SafeAreaView/SafeAreaView.ios.js b/Libraries/Components/SafeAreaView/SafeAreaView.ios.js
deleted file mode 100644
index 5fb0406b8d5125..00000000000000
--- a/Libraries/Components/SafeAreaView/SafeAreaView.ios.js
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
-
-const React = require('React');
-const ViewPropTypes = require('ViewPropTypes');
-const requireNativeComponent = require('requireNativeComponent');
-
-import type {ViewProps} from 'ViewPropTypes';
-
-const RCTSafeAreaView = requireNativeComponent('RCTSafeAreaView');
-
-type Props = ViewProps & {
-  children: any,
-};
-
-/**
- * Renders nested content and automatically applies paddings reflect the portion of the view
- * that is not covered by navigation bars, tab bars, toolbars, and other ancestor views.
- * Moreover, and most importantly, Safe Area's paddings reflect physical limitation of the screen,
- * such as rounded corners or camera notches (aka sensor housing area on iPhone X).
- */
-class SafeAreaView extends React.Component<Props> {
-  static propTypes = {
-    ...ViewPropTypes,
-  };
-
-  render() {
-    return <RCTSafeAreaView {...this.props} />;
-  }
-}
-
-module.exports = SafeAreaView;
diff --git a/Libraries/Components/SafeAreaView/SafeAreaView.js b/Libraries/Components/SafeAreaView/SafeAreaView.js
new file mode 100644
index 00000000000000..6f4ecf3ac867b4
--- /dev/null
+++ b/Libraries/Components/SafeAreaView/SafeAreaView.js
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+const Platform = require('Platform');
+const React = require('React');
+const View = require('View');
+const requireNativeComponent = require('requireNativeComponent');
+
+import type {ViewProps} from 'ViewPropTypes';
+
+type Props = $ReadOnly<{|
+  ...ViewProps,
+  emulateUnlessSupported?: boolean,
+|}>;
+
+let exported;
+
+/**
+ * Renders nested content and automatically applies paddings reflect the portion
+ * of the view that is not covered by navigation bars, tab bars, toolbars, and
+ * other ancestor views.
+ *
+ * Moreover, and most importantly, Safe Area's paddings reflect physical
+ * limitation of the screen, such as rounded corners or camera notches (aka
+ * sensor housing area on iPhone X).
+ */
+if (Platform.OS === 'android') {
+  exported = class SafeAreaView extends React.Component<Props> {
+    render(): React.Node {
+      const {emulateUnlessSupported, ...props} = this.props;
+      return <View {...props} />;
+    }
+  };
+} else {
+  const RCTSafeAreaView = requireNativeComponent('RCTSafeAreaView');
+  exported = class SafeAreaView extends React.Component<Props> {
+    render(): React.Node {
+      return <RCTSafeAreaView emulateUnlessSupported={true} {...this.props} />;
+    }
+  };
+}
+
+module.exports = exported;
diff --git a/Libraries/Components/ScrollResponder.js b/Libraries/Components/ScrollResponder.js
index 548efba80da48c..46fe2a7f566330 100644
--- a/Libraries/Components/ScrollResponder.js
+++ b/Libraries/Components/ScrollResponder.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,17 +14,20 @@ const Dimensions = require('Dimensions');
 const FrameRateLogger = require('FrameRateLogger');
 const Keyboard = require('Keyboard');
 const ReactNative = require('ReactNative');
-const Subscribable = require('Subscribable');
 const TextInputState = require('TextInputState');
 const UIManager = require('UIManager');
 
 const invariant = require('fbjs/lib/invariant');
-const nullthrows = require('fbjs/lib/nullthrows');
+const nullthrows = require('nullthrows');
 const performanceNow = require('fbjs/lib/performanceNow');
 const warning = require('fbjs/lib/warning');
 
 const {ScrollViewManager} = require('NativeModules');
 
+import type {PressEvent, ScrollEvent} from 'CoreEventTypes';
+import type {KeyboardEvent} from 'Keyboard';
+import type EmitterSubscription from 'EmitterSubscription';
+
 /**
  * Mixin that can be integrated in order to handle scrolling that plays well
  * with `ResponderEventPlugin`. Integrate with your platform specific scroll
@@ -112,10 +115,12 @@ type State = {
   observedScrollSinceBecomingResponder: boolean,
   becameResponderWhileAnimating: boolean,
 };
-type Event = Object;
 
 const ScrollResponderMixin = {
-  mixins: [Subscribable.Mixin],
+  _subscriptionKeyboardWillShow: (null: ?EmitterSubscription),
+  _subscriptionKeyboardWillHide: (null: ?EmitterSubscription),
+  _subscriptionKeyboardDidShow: (null: ?EmitterSubscription),
+  _subscriptionKeyboardDidHide: (null: ?EmitterSubscription),
   scrollResponderMixinGetInitialState: function(): State {
     return {
       isTouching: false,
@@ -164,7 +169,9 @@ const ScrollResponderMixin = {
    *   true.
    *
    */
-  scrollResponderHandleStartShouldSetResponder: function(e: Event): boolean {
+  scrollResponderHandleStartShouldSetResponder: function(
+    e: PressEvent,
+  ): boolean {
     const currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
 
     if (
@@ -189,7 +196,7 @@ const ScrollResponderMixin = {
    * Invoke this from an `onStartShouldSetResponderCapture` event.
    */
   scrollResponderHandleStartShouldSetResponderCapture: function(
-    e: Event,
+    e: PressEvent,
   ): boolean {
     // The scroll view should receive taps instead of its descendants if:
     // * it is already animating/decelerating
@@ -208,6 +215,7 @@ const ScrollResponderMixin = {
     if (
       keyboardNeverPersistTaps &&
       currentlyFocusedTextInput != null &&
+      e.target &&
       !TextInputState.isTextInput(e.target)
     ) {
       return true;
@@ -250,9 +258,9 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onTouchEnd` event.
    *
-   * @param {SyntheticEvent} e Event.
+   * @param {PressEvent} e Event.
    */
-  scrollResponderHandleTouchEnd: function(e: Event) {
+  scrollResponderHandleTouchEnd: function(e: PressEvent) {
     const nativeEvent = e.nativeEvent;
     this.state.isTouching = nativeEvent.touches.length !== 0;
     this.props.onTouchEnd && this.props.onTouchEnd(e);
@@ -261,9 +269,9 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onTouchCancel` event.
    *
-   * @param {SyntheticEvent} e Event.
+   * @param {PressEvent} e Event.
    */
-  scrollResponderHandleTouchCancel: function(e: Event) {
+  scrollResponderHandleTouchCancel: function(e: PressEvent) {
     this.state.isTouching = false;
     this.props.onTouchCancel && this.props.onTouchCancel(e);
   },
@@ -271,7 +279,7 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onResponderRelease` event.
    */
-  scrollResponderHandleResponderRelease: function(e: Event) {
+  scrollResponderHandleResponderRelease: function(e: PressEvent) {
     this.props.onResponderRelease && this.props.onResponderRelease(e);
 
     // By default scroll views will unfocus a textField
@@ -291,7 +299,7 @@ const ScrollResponderMixin = {
     }
   },
 
-  scrollResponderHandleScroll: function(e: Event) {
+  scrollResponderHandleScroll: function(e: ScrollEvent) {
     this.state.observedScrollSinceBecomingResponder = true;
     this.props.onScroll && this.props.onScroll(e);
   },
@@ -299,7 +307,7 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onResponderGrant` event.
    */
-  scrollResponderHandleResponderGrant: function(e: Event) {
+  scrollResponderHandleResponderGrant: function(e: ScrollEvent) {
     this.state.observedScrollSinceBecomingResponder = false;
     this.props.onResponderGrant && this.props.onResponderGrant(e);
     this.state.becameResponderWhileAnimating = this.scrollResponderIsAnimating();
@@ -312,7 +320,7 @@ const ScrollResponderMixin = {
    *
    * Invoke this from an `onScrollBeginDrag` event.
    */
-  scrollResponderHandleScrollBeginDrag: function(e: Event) {
+  scrollResponderHandleScrollBeginDrag: function(e: ScrollEvent) {
     FrameRateLogger.beginScroll(); // TODO: track all scrolls after implementing onScrollEndAnimation
     this.props.onScrollBeginDrag && this.props.onScrollBeginDrag(e);
   },
@@ -320,7 +328,7 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onScrollEndDrag` event.
    */
-  scrollResponderHandleScrollEndDrag: function(e: Event) {
+  scrollResponderHandleScrollEndDrag: function(e: ScrollEvent) {
     const {velocity} = e.nativeEvent;
     // - If we are animating, then this is a "drag" that is stopping the scrollview and momentum end
     //   will fire.
@@ -339,7 +347,7 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onMomentumScrollBegin` event.
    */
-  scrollResponderHandleMomentumScrollBegin: function(e: Event) {
+  scrollResponderHandleMomentumScrollBegin: function(e: ScrollEvent) {
     this.state.lastMomentumScrollBeginTime = performanceNow();
     this.props.onMomentumScrollBegin && this.props.onMomentumScrollBegin(e);
   },
@@ -347,7 +355,7 @@ const ScrollResponderMixin = {
   /**
    * Invoke this from an `onMomentumScrollEnd` event.
    */
-  scrollResponderHandleMomentumScrollEnd: function(e: Event) {
+  scrollResponderHandleMomentumScrollEnd: function(e: ScrollEvent) {
     FrameRateLogger.endScroll();
     this.state.lastMomentumScrollEndTime = performanceNow();
     this.props.onMomentumScrollEnd && this.props.onMomentumScrollEnd(e);
@@ -362,9 +370,9 @@ const ScrollResponderMixin = {
    * responder). The `onResponderReject` won't fire in that case - it only
    * fires when a *current* responder rejects our request.
    *
-   * @param {SyntheticEvent} e Touch Start event.
+   * @param {PressEvent} e Touch Start event.
    */
-  scrollResponderHandleTouchStart: function(e: Event) {
+  scrollResponderHandleTouchStart: function(e: PressEvent) {
     this.state.isTouching = true;
     this.props.onTouchStart && this.props.onTouchStart(e);
   },
@@ -378,9 +386,9 @@ const ScrollResponderMixin = {
    * responder). The `onResponderReject` won't fire in that case - it only
    * fires when a *current* responder rejects our request.
    *
-   * @param {SyntheticEvent} e Touch Start event.
+   * @param {PressEvent} e Touch Start event.
    */
-  scrollResponderHandleTouchMove: function(e: Event) {
+  scrollResponderHandleTouchMove: function(e: PressEvent) {
     this.props.onTouchMove && this.props.onTouchMove(e);
   },
 
@@ -405,7 +413,7 @@ const ScrollResponderMixin = {
    * Components can pass what node to use by defining a `getScrollableNode`
    * function otherwise `this` is used.
    */
-  scrollResponderGetScrollableNode: function(): any {
+  scrollResponderGetScrollableNode: function(): ?number {
     return this.getScrollableNode
       ? this.getScrollableNode()
       : ReactNative.findNodeHandle(this);
@@ -436,7 +444,7 @@ const ScrollResponderMixin = {
     }
     UIManager.dispatchViewManagerCommand(
       nullthrows(this.scrollResponderGetScrollableNode()),
-      UIManager.RCTScrollView.Commands.scrollTo,
+      UIManager.getViewManagerConfig('RCTScrollView').Commands.scrollTo,
       [x || 0, y || 0, animated !== false],
     );
   },
@@ -454,7 +462,7 @@ const ScrollResponderMixin = {
     const animated = (options && options.animated) !== false;
     UIManager.dispatchViewManagerCommand(
       this.scrollResponderGetScrollableNode(),
-      UIManager.RCTScrollView.Commands.scrollToEnd,
+      UIManager.getViewManagerConfig('RCTScrollView').Commands.scrollToEnd,
       [animated],
     );
   },
@@ -513,7 +521,8 @@ const ScrollResponderMixin = {
   scrollResponderFlashScrollIndicators: function() {
     UIManager.dispatchViewManagerCommand(
       this.scrollResponderGetScrollableNode(),
-      UIManager.RCTScrollView.Commands.flashScrollIndicators,
+      UIManager.getViewManagerConfig('RCTScrollView').Commands
+        .flashScrollIndicators,
       [],
     );
   },
@@ -522,14 +531,14 @@ const ScrollResponderMixin = {
    * This method should be used as the callback to onFocus in a TextInputs'
    * parent view. Note that any module using this mixin needs to return
    * the parent view's ref in getScrollViewRef() in order to use this method.
-   * @param {any} nodeHandle The TextInput node handle
+   * @param {number} nodeHandle The TextInput node handle
    * @param {number} additionalOffset The scroll view's bottom "contentInset".
    *        Default is 0.
    * @param {bool} preventNegativeScrolling Whether to allow pulling the content
    *        down to make it meet the keyboard's top. Default is false.
    */
   scrollResponderScrollNativeHandleToKeyboard: function(
-    nodeHandle: any,
+    nodeHandle: number,
     additionalOffset?: number,
     preventNegativeScrollOffset?: boolean,
   ) {
@@ -579,8 +588,8 @@ const ScrollResponderMixin = {
     this.preventNegativeScrollOffset = false;
   },
 
-  scrollResponderTextInputFocusError: function(e: Event) {
-    console.error('Error measuring text field: ', e);
+  scrollResponderTextInputFocusError: function(msg: string) {
+    console.error('Error measuring text field: ', msg);
   },
 
   /**
@@ -601,28 +610,39 @@ const ScrollResponderMixin = {
 
     this.keyboardWillOpenTo = null;
     this.additionalScrollOffset = 0;
-    this.addListenerOn(
-      Keyboard,
+    this._subscriptionKeyboardWillShow = Keyboard.addListener(
       'keyboardWillShow',
       this.scrollResponderKeyboardWillShow,
     );
-    this.addListenerOn(
-      Keyboard,
+    this._subscriptionKeyboardWillHide = Keyboard.addListener(
       'keyboardWillHide',
       this.scrollResponderKeyboardWillHide,
     );
-    this.addListenerOn(
-      Keyboard,
+    this._subscriptionKeyboardDidShow = Keyboard.addListener(
       'keyboardDidShow',
       this.scrollResponderKeyboardDidShow,
     );
-    this.addListenerOn(
-      Keyboard,
+    this._subscriptionKeyboardDidHide = Keyboard.addListener(
       'keyboardDidHide',
       this.scrollResponderKeyboardDidHide,
     );
   },
 
+  componentWillUnmount: function() {
+    if (this._subscriptionKeyboardWillShow != null) {
+      this._subscriptionKeyboardWillShow.remove();
+    }
+    if (this._subscriptionKeyboardWillHide != null) {
+      this._subscriptionKeyboardWillHide.remove();
+    }
+    if (this._subscriptionKeyboardDidShow != null) {
+      this._subscriptionKeyboardDidShow.remove();
+    }
+    if (this._subscriptionKeyboardDidHide != null) {
+      this._subscriptionKeyboardDidHide.remove();
+    }
+  },
+
   /**
    * Warning, this may be called several times for a single keyboard opening.
    * It's best to store the information in this method and then take any action
@@ -651,17 +671,17 @@ const ScrollResponderMixin = {
    * relevant to you. (For example, only if you receive these callbacks after
    * you had explicitly focused a node etc).
    */
-  scrollResponderKeyboardWillShow: function(e: Event) {
+  scrollResponderKeyboardWillShow: function(e: KeyboardEvent) {
     this.keyboardWillOpenTo = e;
     this.props.onKeyboardWillShow && this.props.onKeyboardWillShow(e);
   },
 
-  scrollResponderKeyboardWillHide: function(e: Event) {
+  scrollResponderKeyboardWillHide: function(e: KeyboardEvent) {
     this.keyboardWillOpenTo = null;
     this.props.onKeyboardWillHide && this.props.onKeyboardWillHide(e);
   },
 
-  scrollResponderKeyboardDidShow: function(e: Event) {
+  scrollResponderKeyboardDidShow: function(e: KeyboardEvent) {
     // TODO(7693961): The event for DidShow is not available on iOS yet.
     // Use the one from WillShow and do not assign.
     if (e) {
@@ -670,7 +690,7 @@ const ScrollResponderMixin = {
     this.props.onKeyboardDidShow && this.props.onKeyboardDidShow(e);
   },
 
-  scrollResponderKeyboardDidHide: function(e: Event) {
+  scrollResponderKeyboardDidHide: function(e: KeyboardEvent) {
     this.keyboardWillOpenTo = null;
     this.props.onKeyboardDidHide && this.props.onKeyboardDidHide(e);
   },
diff --git a/Libraries/Components/ScrollView/InternalScrollViewType.js b/Libraries/Components/ScrollView/InternalScrollViewType.js
index 471e25d9a5dab9..a13db7dee6a65b 100644
--- a/Libraries/Components/ScrollView/InternalScrollViewType.js
+++ b/Libraries/Components/ScrollView/InternalScrollViewType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ScrollView/ScrollView.js b/Libraries/Components/ScrollView/ScrollView.js
index f30661dfc45401..98e9a4337047f9 100644
--- a/Libraries/Components/ScrollView/ScrollView.js
+++ b/Libraries/Components/ScrollView/ScrollView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,7 +26,6 @@ const flattenStyle = require('flattenStyle');
 const invariant = require('fbjs/lib/invariant');
 const processDecelerationRate = require('processDecelerationRate');
 const requireNativeComponent = require('requireNativeComponent');
-const warning = require('fbjs/lib/warning');
 const resolveAssetSource = require('resolveAssetSource');
 
 import type {PressEvent} from 'CoreEventTypes';
@@ -217,6 +216,11 @@ type IOSProps = $ReadOnly<{|
    * @platform ios
    */
   scrollsToTop?: ?boolean,
+  /**
+   * Fires when the scroll view scrolls to top after the status bar has been tapped
+   * @platform ios
+   */
+  onScrollToTop?: ?Function,
   /**
    * When true, shows a horizontal scroll indicator.
    * The default value is true.
@@ -406,7 +410,9 @@ export type Props = $ReadOnly<{|
    *   - `false`, deprecated, use 'never' instead
    *   - `true`, deprecated, use 'always' instead
    */
-  // $FlowFixMe(site=react_native_fb) Issues found when typing ScrollView
+  /* $FlowFixMe(>=0.86.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.86 was deployed. To see the error, delete this comment
+   * and run Flow. */
   keyboardShouldPersistTaps?: ?('always' | 'never' | 'handled' | false | true),
   /**
    * Called when the momentum scroll starts (scroll which occurs as the ScrollView glides to a stop).
@@ -488,6 +494,22 @@ export type Props = $ReadOnly<{|
    * Overrides less configurable `pagingEnabled` and `snapToInterval` props.
    */
   snapToOffsets?: ?$ReadOnlyArray<number>,
+  /**
+   * Use in conjuction with `snapToOffsets`. By default, the beginning
+   * of the list counts as a snap offset. Set `snapToStart` to false to disable
+   * this behavior and allow the list to scroll freely between its start and
+   * the first `snapToOffsets` offset.
+   * The default value is true.
+   */
+  snapToStart?: ?boolean,
+  /**
+   * Use in conjuction with `snapToOffsets`. By default, the end
+   * of the list counts as a snap offset. Set `snapToEnd` to false to disable
+   * this behavior and allow the list to scroll freely between its end and
+   * the last `snapToOffsets` offset.
+   * The default value is true.
+   */
+  snapToEnd?: ?boolean,
   /**
    * Experimental: When true, offscreen child views (whose `overflow` value is
    * `hidden`) are removed from their native backing superview when offscreen.
@@ -503,7 +525,6 @@ export type Props = $ReadOnly<{|
    * See [RefreshControl](docs/refreshcontrol.html).
    */
   refreshControl?: ?React.Element<any>,
-  style?: ?ViewStyleProp,
   children?: React.Node,
 |}>;
 
@@ -1005,6 +1026,10 @@ const ScrollView = createReactClass({
           ? true
           : false,
       DEPRECATED_sendUpdatedChildFrames,
+      // default to true
+      snapToStart: this.props.snapToStart !== false,
+      // default to true
+      snapToEnd: this.props.snapToEnd !== false,
       // pagingEnabled is overridden by snapToInterval / snapToOffsets
       pagingEnabled: Platform.select({
         // on iOS, pagingEnabled must be set to false to have snapToInterval / snapToOffsets work
diff --git a/Libraries/Components/ScrollView/ScrollViewStickyHeader.js b/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
index e17467b264cd98..5ad409c783e96f 100644
--- a/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
+++ b/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ScrollView/__mocks__/ScrollViewMock.js b/Libraries/Components/ScrollView/__mocks__/ScrollViewMock.js
index 46f691382d2f6e..a2367c357d3189 100644
--- a/Libraries/Components/ScrollView/__mocks__/ScrollViewMock.js
+++ b/Libraries/Components/ScrollView/__mocks__/ScrollViewMock.js
@@ -1,19 +1,17 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 /* eslint-env jest */
 
 'use strict';
 
-declare var jest: any;
-
 const React = require('React');
 const View = require('View');
 
diff --git a/Libraries/Components/ScrollView/processDecelerationRate.js b/Libraries/Components/ScrollView/processDecelerationRate.js
index fc50c6766f92e9..a685381715d835 100644
--- a/Libraries/Components/ScrollView/processDecelerationRate.js
+++ b/Libraries/Components/ScrollView/processDecelerationRate.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.android.js b/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.android.js
index 7a988960ceca96..581e77cf6ff8d4 100644
--- a/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.android.js
+++ b/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.ios.js b/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.ios.js
index b4635f13f8e4d5..540a31838b5a0b 100644
--- a/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.ios.js
+++ b/Libraries/Components/SegmentedControlIOS/SegmentedControlIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,39 +10,66 @@
 
 'use strict';
 
-const NativeMethodsMixin = require('NativeMethodsMixin');
 const React = require('React');
-const ReactNative = require('ReactNative');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
-const ViewPropTypes = require('ViewPropTypes');
 
-const createReactClass = require('create-react-class');
 const requireNativeComponent = require('requireNativeComponent');
 
+import type {SyntheticEvent} from 'CoreEventTypes';
 import type {ViewProps} from 'ViewPropTypes';
+import type {NativeComponent} from 'ReactNative';
 
-const RCTSegmentedControl = requireNativeComponent('RCTSegmentedControl');
+type Event = SyntheticEvent<
+  $ReadOnly<{|
+    value: number,
+    selectedSegmentIndex: number,
+  |}>,
+>;
 
-type DefaultProps = {
-  values: $ReadOnlyArray<string>,
-  enabled: boolean,
-};
-
-type Props = $ReadOnly<{|
+type SegmentedControlIOSProps = $ReadOnly<{|
   ...ViewProps,
-  values?: ?$ReadOnlyArray<string>,
+  /**
+   * The labels for the control's segment buttons, in order.
+   */
+  values?: $ReadOnlyArray<string>,
+  /**
+   * The index in `props.values` of the segment to be (pre)selected.
+   */
   selectedIndex?: ?number,
-  onValueChange?: ?Function,
-  onChange?: ?Function,
-  enabled?: ?boolean,
+  /**
+   * Callback that is called when the user taps a segment;
+   * passes the segment's value as an argument
+   */
+  onValueChange?: ?(value: number) => mixed,
+  /**
+   * Callback that is called when the user taps a segment;
+   * passes the event as an argument
+   */
+  onChange?: ?(event: Event) => mixed,
+  /**
+   * If false the user won't be able to interact with the control.
+   * Default value is true.
+   */
+  enabled?: boolean,
+  /**
+   * Accent color of the control.
+   */
   tintColor?: ?string,
+  /**
+   * If true, then selecting a segment won't persist visually.
+   * The `onValueChange` callback will still work as expected.
+   */
   momentary?: ?boolean,
 |}>;
 
-const SEGMENTED_CONTROL_REFERENCE = 'segmentedcontrol';
+type Props = $ReadOnly<{|
+  ...SegmentedControlIOSProps,
+  forwardedRef: ?React.Ref<typeof RCTSegmentedControl>,
+|}>;
 
-type Event = Object;
+type NativeSegmentedControlIOS = Class<
+  NativeComponent<SegmentedControlIOSProps>,
+>;
 
 /**
  * Use `SegmentedControlIOS` to render a UISegmentedControl iOS.
@@ -64,76 +91,35 @@ type Event = Object;
  * />
  * ````
  */
-const SegmentedControlIOS = createReactClass({
-  displayName: 'SegmentedControlIOS',
-  mixins: [NativeMethodsMixin],
-
-  propTypes: {
-    ...ViewPropTypes,
-    /**
-     * The labels for the control's segment buttons, in order.
-     */
-    values: PropTypes.arrayOf(PropTypes.string),
-
-    /**
-     * The index in `props.values` of the segment to be (pre)selected.
-     */
-    selectedIndex: PropTypes.number,
-
-    /**
-     * Callback that is called when the user taps a segment;
-     * passes the segment's value as an argument
-     */
-    onValueChange: PropTypes.func,
-
-    /**
-     * Callback that is called when the user taps a segment;
-     * passes the event as an argument
-     */
-    onChange: PropTypes.func,
-
-    /**
-     * If false the user won't be able to interact with the control.
-     * Default value is true.
-     */
-    enabled: PropTypes.bool,
-
-    /**
-     * Accent color of the control.
-     */
-    tintColor: PropTypes.string,
-
-    /**
-     * If true, then selecting a segment won't persist visually.
-     * The `onValueChange` callback will still work as expected.
-     */
-    momentary: PropTypes.bool,
-  },
 
-  getDefaultProps: function(): DefaultProps {
-    return {
-      values: [],
-      enabled: true,
-    };
-  },
+const RCTSegmentedControl = ((requireNativeComponent(
+  'RCTSegmentedControl',
+): any): NativeSegmentedControlIOS);
 
-  _onChange: function(event: Event) {
+class SegmentedControlIOS extends React.Component<Props> {
+  static defaultProps = {
+    values: [],
+    enabled: true,
+  };
+
+  _onChange = (event: Event) => {
     this.props.onChange && this.props.onChange(event);
     this.props.onValueChange &&
       this.props.onValueChange(event.nativeEvent.value);
-  },
+  };
 
-  render: function() {
+  render() {
+    const {forwardedRef, ...props} = this.props;
     return (
       <RCTSegmentedControl
-        {...this.props}
-        ref={SEGMENTED_CONTROL_REFERENCE}
+        {...props}
+        ref={forwardedRef}
         style={[styles.segmentedControl, this.props.style]}
         onChange={this._onChange}
       />
     );
-  },
-});
+  }
+}
 
 const styles = StyleSheet.create({
   segmentedControl: {
@@ -141,6 +127,14 @@ const styles = StyleSheet.create({
   },
 });
 
-module.exports = ((SegmentedControlIOS: any): Class<
-  ReactNative.NativeComponent<Props>,
->);
+// $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+const SegmentedControlIOSWithRef = React.forwardRef(
+  (
+    props: SegmentedControlIOSProps,
+    forwardedRef: ?React.Ref<typeof RCTSegmentedControl>,
+  ) => {
+    return <SegmentedControlIOS {...props} forwardedRef={forwardedRef} />;
+  },
+);
+
+module.exports = (SegmentedControlIOSWithRef: NativeSegmentedControlIOS);
diff --git a/Libraries/Components/Slider/Slider.js b/Libraries/Components/Slider/Slider.js
index fe37c79b3a47e7..318b9bf50d88eb 100644
--- a/Libraries/Components/Slider/Slider.js
+++ b/Libraries/Components/Slider/Slider.js
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
@@ -21,10 +21,19 @@ import type {ImageSource} from 'ImageSource';
 import type {ViewStyleProp} from 'StyleSheet';
 import type {ColorValue} from 'StyleSheetTypes';
 import type {ViewProps} from 'ViewPropTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
 
 const RCTSlider = requireNativeComponent('RCTSlider');
 
-type Event = Object;
+type Event = SyntheticEvent<
+  $ReadOnly<{|
+    value: number,
+    /**
+     * Android Only.
+     */
+    fromUser?: boolean,
+  |}>,
+>;
 
 type IOSProps = $ReadOnly<{|
   /**
@@ -66,7 +75,7 @@ type Props = $ReadOnly<{|
 
   /**
    * Used to style and layout the `Slider`.  See `StyleSheet.js` and
-   * `ViewStylePropTypes.js` for more info.
+   * `DeprecatedViewStylePropTypes.js` for more info.
    */
   style?: ?ViewStyleProp,
 
@@ -118,14 +127,14 @@ type Props = $ReadOnly<{|
   /**
    * Callback continuously called while the user is dragging the slider.
    */
-  onValueChange?: ?Function,
+  onValueChange?: ?(value: number) => void,
 
   /**
    * Callback that is called when the user releases the slider,
    * regardless if the value has changed. The current value is passed
    * as an argument to the callback handler.
    */
-  onSlidingComplete?: ?Function,
+  onSlidingComplete?: ?(value: number) => void,
 
   /**
    * Used to locate this view in UI automation tests.
@@ -209,7 +218,8 @@ const Slider = (
       if (Platform.OS === 'android') {
         // On Android there's a special flag telling us the user is
         // dragging the slider.
-        userEvent = event.nativeEvent.fromUser;
+        userEvent =
+          event.nativeEvent.fromUser != null && event.nativeEvent.fromUser;
       }
       props.onValueChange &&
         userEvent &&
diff --git a/Libraries/Components/StaticContainer.react.js b/Libraries/Components/StaticContainer.react.js
index ffba809a46ab72..4772dd4af482cc 100644
--- a/Libraries/Components/StaticContainer.react.js
+++ b/Libraries/Components/StaticContainer.react.js
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
@@ -27,8 +27,19 @@ const React = require('React');
  * Typically, you will not need to use this component and should opt for normal
  * React reconciliation.
  */
-class StaticContainer extends React.Component<Object> {
-  shouldComponentUpdate(nextProps: Object): boolean {
+
+type Props = $ReadOnly<{|
+  /**
+   * Whether or not this component should update.
+   */
+  shouldUpdate: ?boolean,
+  /**
+   * Content short-circuited by React reconciliation process.
+   */
+  children: React.Node,
+|}>;
+class StaticContainer extends React.Component<Props> {
+  shouldComponentUpdate(nextProps: Props): boolean {
     return !!nextProps.shouldUpdate;
   }
 
diff --git a/Libraries/Components/StaticRenderer.js b/Libraries/Components/StaticRenderer.js
index 4f8cfbd0989fa8..f4d630d6a98ab0 100644
--- a/Libraries/Components/StaticRenderer.js
+++ b/Libraries/Components/StaticRenderer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,18 +12,20 @@
 
 const React = require('React');
 
-const PropTypes = require('prop-types');
-
-class StaticRenderer extends React.Component<{
+type Props = $ReadOnly<{|
+  /**
+   * Indicates whether the render function needs to be called again
+   */
   shouldUpdate: boolean,
-  render: Function,
-}> {
-  static propTypes = {
-    shouldUpdate: PropTypes.bool.isRequired,
-    render: PropTypes.func.isRequired,
-  };
+  /**
+   * () => renderable
+   * A function that returns a renderable component
+   */
+  render: () => React.Node,
+|}>;
 
-  shouldComponentUpdate(nextProps: {shouldUpdate: boolean}): boolean {
+class StaticRenderer extends React.Component<Props> {
+  shouldComponentUpdate(nextProps: Props): boolean {
     return nextProps.shouldUpdate;
   }
 
diff --git a/Libraries/Components/StatusBar/StatusBar.js b/Libraries/Components/StatusBar/StatusBar.js
index 97db49fdd10283..52e6a764d2ca74 100644
--- a/Libraries/Components/StatusBar/StatusBar.js
+++ b/Libraries/Components/StatusBar/StatusBar.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,8 +11,6 @@
 'use strict';
 
 const React = require('React');
-const PropTypes = require('prop-types');
-const ColorPropType = require('ColorPropType');
 const Platform = require('Platform');
 
 const processColor = require('processColor');
@@ -55,9 +53,55 @@ export type StatusBarAnimation = $Enum<{
   slide: string,
 }>;
 
-type DefaultProps = {
-  animated: boolean,
-};
+type AndroidProps = $ReadOnly<{|
+  /**
+   * The background color of the status bar.
+   * @platform android
+   */
+  backgroundColor?: ?string,
+  /**
+   * If the status bar is translucent.
+   * When translucent is set to true, the app will draw under the status bar.
+   * This is useful when using a semi transparent status bar color.
+   *
+   * @platform android
+   */
+  translucent?: ?boolean,
+|}>;
+
+type IOSProps = $ReadOnly<{|
+  /**
+   * If the network activity indicator should be visible.
+   *
+   * @platform ios
+   */
+  networkActivityIndicatorVisible?: ?boolean,
+  /**
+   * The transition effect when showing and hiding the status bar using the `hidden`
+   * prop. Defaults to 'fade'.
+   *
+   * @platform ios
+   */
+  showHideTransition?: ?('fade' | 'slide'),
+|}>;
+
+type Props = $ReadOnly<{|
+  ...AndroidProps,
+  ...IOSProps,
+  /**
+   * If the status bar is hidden.
+   */
+  hidden?: ?boolean,
+  /**
+   * If the transition between status bar property changes should be animated.
+   * Supported for backgroundColor, barStyle and hidden.
+   */
+  animated?: ?boolean,
+  /**
+   * Sets the color of the status bar text.
+   */
+  barStyle?: ?('default' | 'light-content' | 'dark-content'),
+|}>;
 
 /**
  * Merges the prop stack with the default values.
@@ -148,15 +192,7 @@ function createStackEntry(props: any): any {
  *
  * `currentHeight` (Android only) The height of the status bar.
  */
-class StatusBar extends React.Component<{
-  hidden?: boolean,
-  animated?: boolean,
-  backgroundColor?: string,
-  translucent?: boolean,
-  barStyle?: 'default' | 'light-content' | 'dark-content',
-  networkActivityIndicatorVisible?: boolean,
-  showHideTransition?: 'fade' | 'slide',
-}> {
+class StatusBar extends React.Component<Props> {
   static _propsStack = [];
 
   static _defaultProps = createStackEntry({
@@ -261,48 +297,6 @@ class StatusBar extends React.Component<{
     StatusBarManager.setTranslucent(translucent);
   }
 
-  static propTypes = {
-    /**
-     * If the status bar is hidden.
-     */
-    hidden: PropTypes.bool,
-    /**
-     * If the transition between status bar property changes should be animated.
-     * Supported for backgroundColor, barStyle and hidden.
-     */
-    animated: PropTypes.bool,
-    /**
-     * The background color of the status bar.
-     * @platform android
-     */
-    backgroundColor: ColorPropType,
-    /**
-     * If the status bar is translucent.
-     * When translucent is set to true, the app will draw under the status bar.
-     * This is useful when using a semi transparent status bar color.
-     *
-     * @platform android
-     */
-    translucent: PropTypes.bool,
-    /**
-     * Sets the color of the status bar text.
-     */
-    barStyle: PropTypes.oneOf(['default', 'light-content', 'dark-content']),
-    /**
-     * If the network activity indicator should be visible.
-     *
-     * @platform ios
-     */
-    networkActivityIndicatorVisible: PropTypes.bool,
-    /**
-     * The transition effect when showing and hiding the status bar using the `hidden`
-     * prop. Defaults to 'fade'.
-     *
-     * @platform ios
-     */
-    showHideTransition: PropTypes.oneOf(['fade', 'slide']),
-  };
-
   static defaultProps = {
     animated: false,
     showHideTransition: 'fade',
diff --git a/Libraries/Components/StatusBar/StatusBarIOS.android.js b/Libraries/Components/StatusBar/StatusBarIOS.android.js
index 78831fab6d17e7..4e9f97309b29b0 100644
--- a/Libraries/Components/StatusBar/StatusBarIOS.android.js
+++ b/Libraries/Components/StatusBar/StatusBarIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/StatusBar/StatusBarIOS.ios.js b/Libraries/Components/StatusBar/StatusBarIOS.ios.js
index ed8ef0f4a1ca11..ea558eafa9ba94 100644
--- a/Libraries/Components/StatusBar/StatusBarIOS.ios.js
+++ b/Libraries/Components/StatusBar/StatusBarIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Subscribable.js b/Libraries/Components/Subscribable.js
deleted file mode 100644
index a56d42ed864c8d..00000000000000
--- a/Libraries/Components/Subscribable.js
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow
- */
-
-'use strict';
-
-import type EventEmitter from 'EventEmitter';
-
-/**
- * Subscribable provides a mixin for safely subscribing a component to an
- * eventEmitter
- *
- * This will be replaced with the observe interface that will be coming soon to
- * React Core
- */
-
-const Subscribable = {};
-
-Subscribable.Mixin = {
-  UNSAFE_componentWillMount: function() {
-    this._subscribableSubscriptions = [];
-  },
-
-  componentWillUnmount: function() {
-    // This null check is a fix for a broken version of uglify-es. Should be deleted eventually
-    // https://github.com/facebook/react-native/issues/17348
-    this._subscribableSubscriptions &&
-      this._subscribableSubscriptions.forEach(subscription =>
-        subscription.remove(),
-      );
-    this._subscribableSubscriptions = null;
-  },
-
-  /**
-   * Special form of calling `addListener` that *guarantees* that a
-   * subscription *must* be tied to a component instance, and therefore will
-   * be cleaned up when the component is unmounted. It is impossible to create
-   * the subscription and pass it in - this method must be the one to create
-   * the subscription and therefore can guarantee it is retained in a way that
-   * will be cleaned up.
-   *
-   * @param {EventEmitter} eventEmitter emitter to subscribe to.
-   * @param {string} eventType Type of event to listen to.
-   * @param {function} listener Function to invoke when event occurs.
-   * @param {object} context Object to use as listener context.
-   */
-  addListenerOn: function(
-    eventEmitter: EventEmitter,
-    eventType: string,
-    listener: Function,
-    context: Object,
-  ) {
-    this._subscribableSubscriptions.push(
-      eventEmitter.addListener(eventType, listener, context),
-    );
-  },
-};
-
-module.exports = Subscribable;
diff --git a/Libraries/Components/Switch/Switch.js b/Libraries/Components/Switch/Switch.js
index 0e11aff4e5e817..80fe6306d7228c 100644
--- a/Libraries/Components/Switch/Switch.js
+++ b/Libraries/Components/Switch/Switch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -109,7 +109,7 @@ class Switch extends React.Component<Props> {
       _thumbColor = thumbTintColor;
       if (__DEV__) {
         console.warn(
-          'Switch: `thumbTintColor` is deprecated, use `_thumbColor` instead.',
+          'Switch: `thumbTintColor` is deprecated, use `thumbColor` instead.',
         );
       }
     }
diff --git a/Libraries/Components/Switch/SwitchNativeComponent.js b/Libraries/Components/Switch/SwitchNativeComponent.js
index a320251744de33..45edc3213568ca 100644
--- a/Libraries/Components/Switch/SwitchNativeComponent.js
+++ b/Libraries/Components/Switch/SwitchNativeComponent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/TabBarIOS/TabBarIOS.android.js b/Libraries/Components/TabBarIOS/TabBarIOS.android.js
index e8e376f8a9eb7e..81047bfe95d2cb 100644
--- a/Libraries/Components/TabBarIOS/TabBarIOS.android.js
+++ b/Libraries/Components/TabBarIOS/TabBarIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,9 +15,22 @@ const StyleSheet = require('StyleSheet');
 const TabBarItemIOS = require('TabBarItemIOS');
 const View = require('View');
 
+let showedDeprecationWarning = false;
+
 class DummyTabBarIOS extends React.Component<$FlowFixMeProps> {
   static Item = TabBarItemIOS;
 
+  componentDidMount() {
+    if (!showedDeprecationWarning) {
+      console.warn(
+        'TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. ' +
+          'Please use react-native-tab-view instead.',
+      );
+
+      showedDeprecationWarning = true;
+    }
+  }
+
   render() {
     return (
       <View style={[this.props.style, styles.tabGroup]}>
diff --git a/Libraries/Components/TabBarIOS/TabBarIOS.ios.js b/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
index 6cbe213f7fc36d..883ed1bd6e11c3 100644
--- a/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
+++ b/Libraries/Components/TabBarIOS/TabBarIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,76 +10,79 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
 const React = require('React');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
 const TabBarItemIOS = require('TabBarItemIOS');
-const ViewPropTypes = require('ViewPropTypes');
 
 const requireNativeComponent = require('requireNativeComponent');
 
-import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
 import type {ViewProps} from 'ViewPropTypes';
+import type {ColorValue} from 'StyleSheetTypes';
 
 const RCTTabBar = requireNativeComponent('RCTTabBar');
 
 type Props = $ReadOnly<{|
   ...ViewProps,
-  style?: DangerouslyImpreciseStyleProp,
-  unselectedTintColor?: string,
-  tintColor?: string,
-  unselectedItemTintColor?: string,
-  barTintColor?: string,
-  barStyle?: 'default' | 'black',
-  translucent?: boolean,
-  itemPositioning?: 'fill' | 'center' | 'auto',
-  children: React.Node,
+
+  /**
+   * Color of text on unselected tabs
+   */
+  unselectedTintColor?: ColorValue,
+
+  /**
+   * Color of the currently selected tab icon
+   */
+  tintColor?: ColorValue,
+
+  /**
+   * Color of unselected tab icons. Available since iOS 10.
+   */
+  unselectedItemTintColor?: ColorValue,
+
+  /**
+   * Background color of the tab bar
+   */
+  barTintColor?: ColorValue,
+
+  /**
+   * The style of the tab bar. Supported values are 'default', 'black'.
+   * Use 'black' instead of setting `barTintColor` to black. This produces
+   * a tab bar with the native iOS style with higher translucency.
+   */
+  barStyle?: ?('default' | 'black'),
+
+  /**
+   * A Boolean value that indicates whether the tab bar is translucent
+   */
+  translucent?: ?boolean,
+
+  /**
+   * Specifies tab bar item positioning. Available values are:
+   * - fill - distributes items across the entire width of the tab bar
+   * - center - centers item in the available tab bar space
+   * - auto (default) - distributes items dynamically according to the
+   * user interface idiom. In a horizontally compact environment (e.g. iPhone 5)
+   * this value defaults to `fill`, in a horizontally regular one (e.g. iPad)
+   * it defaults to center.
+   */
+  itemPositioning?: ?('fill' | 'center' | 'auto'),
 |}>;
 
+let showedDeprecationWarning = false;
+
 class TabBarIOS extends React.Component<Props> {
   static Item = TabBarItemIOS;
 
-  static propTypes = {
-    ...ViewPropTypes,
-    style: ViewPropTypes.style,
-    /**
-     * Color of text on unselected tabs
-     */
-    unselectedTintColor: ColorPropType,
-    /**
-     * Color of the currently selected tab icon
-     */
-    tintColor: ColorPropType,
-    /**
-     * Color of unselected tab icons. Available since iOS 10.
-     */
-    unselectedItemTintColor: ColorPropType,
-    /**
-     * Background color of the tab bar
-     */
-    barTintColor: ColorPropType,
-    /**
-     * The style of the tab bar. Supported values are 'default', 'black'.
-     * Use 'black' instead of setting `barTintColor` to black. This produces
-     * a tab bar with the native iOS style with higher translucency.
-     */
-    barStyle: PropTypes.oneOf(['default', 'black']),
-    /**
-     * A Boolean value that indicates whether the tab bar is translucent
-     */
-    translucent: PropTypes.bool,
-    /**
-     * Specifies tab bar item positioning. Available values are:
-     * - fill - distributes items across the entire width of the tab bar
-     * - center - centers item in the available tab bar space
-     * - auto (default) - distributes items dynamically according to the
-     * user interface idiom. In a horizontally compact environment (e.g. iPhone 5)
-     * this value defaults to `fill`, in a horizontally regular one (e.g. iPad)
-     * it defaults to center.
-     */
-    itemPositioning: PropTypes.oneOf(['fill', 'center', 'auto']),
-  };
+  componentDidMount() {
+    if (!showedDeprecationWarning) {
+      console.warn(
+        'TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. ' +
+          'Please use react-native-tab-view instead.',
+      );
+
+      showedDeprecationWarning = true;
+    }
+  }
 
   render() {
     return (
diff --git a/Libraries/Components/TabBarIOS/TabBarItemIOS.android.js b/Libraries/Components/TabBarIOS/TabBarItemIOS.android.js
index 37dc72f4d41faf..424978672f78a2 100644
--- a/Libraries/Components/TabBarIOS/TabBarItemIOS.android.js
+++ b/Libraries/Components/TabBarIOS/TabBarItemIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,7 +13,20 @@ const React = require('React');
 const View = require('View');
 const StyleSheet = require('StyleSheet');
 
+let showedDeprecationWarning = false;
+
 class DummyTab extends React.Component {
+  componentDidMount() {
+    if (!showedDeprecationWarning) {
+      console.warn(
+        'TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. ' +
+          'Please use react-native-tab-view instead.',
+      );
+
+      showedDeprecationWarning = true;
+    }
+  }
+
   render() {
     if (!this.props.selected) {
       return <View />;
diff --git a/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js b/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
index b8825977a8cac6..873573ad8a025c 100644
--- a/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
+++ b/Libraries/Components/TabBarIOS/TabBarItemIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,90 +10,102 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const Image = require('Image');
 const React = require('React');
-const PropTypes = require('prop-types');
 const StaticContainer = require('StaticContainer.react');
 const StyleSheet = require('StyleSheet');
 const View = require('View');
 
-const ViewPropTypes = require('ViewPropTypes');
-
 const requireNativeComponent = require('requireNativeComponent');
 
-class TabBarItemIOS extends React.Component {
-  static propTypes = {
-    ...ViewPropTypes,
-    /**
-     * Little red bubble that sits at the top right of the icon.
-     */
-    badge: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
-    /**
-     * Background color for the badge. Available since iOS 10.
-     */
-    badgeColor: ColorPropType,
-    /**
-     * Items comes with a few predefined system icons. Note that if you are
-     * using them, the title and selectedIcon will be overridden with the
-     * system ones.
-     */
-    systemIcon: PropTypes.oneOf([
-      'bookmarks',
-      'contacts',
-      'downloads',
-      'favorites',
-      'featured',
-      'history',
-      'more',
-      'most-recent',
-      'most-viewed',
-      'recents',
-      'search',
-      'top-rated',
-    ]),
-    /**
-     * A custom icon for the tab. It is ignored when a system icon is defined.
-     */
-    icon: Image.propTypes.source,
-    /**
-     * A custom icon when the tab is selected. It is ignored when a system
-     * icon is defined. If left empty, the icon will be tinted in blue.
-     */
-    selectedIcon: Image.propTypes.source,
-    /**
-     * Callback when this tab is being selected, you should change the state of your
-     * component to set selected={true}.
-     */
-    onPress: PropTypes.func,
-    /**
-     * If set to true it renders the image as original,
-     * it defaults to being displayed as a template
-     */
-    renderAsOriginal: PropTypes.bool,
-    /**
-     * It specifies whether the children are visible or not. If you see a
-     * blank content, you probably forgot to add a selected one.
-     */
-    selected: PropTypes.bool,
-    /**
-     * React style object.
-     */
-    style: ViewPropTypes.style,
-    /**
-     * Text that appears under the icon. It is ignored when a system icon
-     * is defined.
-     */
-    title: PropTypes.string,
-    /**
-     *(Apple TV only)* When set to true, this view will be focusable
-     * and navigable using the Apple TV remote.
-     *
-     * @platform ios
-     */
-    isTVSelectable: PropTypes.bool,
-  };
+import type {ViewProps} from 'ViewPropTypes';
+import type {ColorValue} from 'StyleSheetTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {ImageSource} from 'ImageSource';
+
+type Props = $ReadOnly<{|
+  ...ViewProps,
+
+  /**
+   * Little red bubble that sits at the top right of the icon.
+   */
+  badge?: ?(string | number),
+
+  /**
+   * Background color for the badge. Available since iOS 10.
+   */
+  badgeColor?: ColorValue,
+
+  /**
+   * Items comes with a few predefined system icons. Note that if you are
+   * using them, the title and selectedIcon will be overridden with the
+   * system ones.
+   */
+  systemIcon?: ?(
+    | 'bookmarks'
+    | 'contacts'
+    | 'downloads'
+    | 'favorites'
+    | 'featured'
+    | 'history'
+    | 'more'
+    | 'most-recent'
+    | 'most-viewed'
+    | 'recents'
+    | 'search'
+    | 'top-rated'
+  ),
+
+  /**
+   * A custom icon for the tab. It is ignored when a system icon is defined.
+   */
+  icon?: ?ImageSource,
+
+  /**
+   * A custom icon when the tab is selected. It is ignored when a system
+   * icon is defined. If left empty, the icon will be tinted in blue.
+   */
+  selectedIcon?: ?ImageSource,
+
+  /**
+   * Callback when this tab is being selected, you should change the state of your
+   * component to set selected={true}.
+   */
+  onPress?: ?(event: SyntheticEvent<null>) => mixed,
+
+  /**
+   * If set to true it renders the image as original,
+   * it defaults to being displayed as a template
+   */
+  renderAsOriginal?: ?boolean,
 
+  /**
+   * It specifies whether the children are visible or not. If you see a
+   * blank content, you probably forgot to add a selected one.
+   */
+  selected?: ?boolean,
+
+  /**
+   * Text that appears under the icon. It is ignored when a system icon
+   * is defined.
+   */
+  title?: ?string,
+
+  /**
+   * *(Apple TV only)* When set to true, this view will be focusable
+   * and navigable using the Apple TV remote.
+   *
+   * @platform ios
+   */
+  isTVSelectable?: ?boolean,
+|}>;
+
+type State = {|
+  hasBeenSelected: boolean,
+|};
+
+let showedDeprecationWarning = false;
+
+class TabBarItemIOS extends React.Component<Props, State> {
   state = {
     hasBeenSelected: false,
   };
@@ -104,25 +116,37 @@ class TabBarItemIOS extends React.Component {
     }
   }
 
-  UNSAFE_componentWillReceiveProps(nextProps: {selected?: boolean}) {
+  UNSAFE_componentWillReceiveProps(nextProps: Props) {
     if (this.state.hasBeenSelected || nextProps.selected) {
       this.setState({hasBeenSelected: true});
     }
   }
 
+  componentDidMount() {
+    if (!showedDeprecationWarning) {
+      console.warn(
+        'TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. ' +
+          'Please use react-native-tab-view instead.',
+      );
+
+      showedDeprecationWarning = true;
+    }
+  }
+
   render() {
     const {style, children, ...props} = this.props;
 
     // if the tab has already been shown once, always continue to show it so we
     // preserve state between tab transitions
+    let tabContents;
     if (this.state.hasBeenSelected) {
-      var tabContents = (
+      tabContents = (
         <StaticContainer shouldUpdate={this.props.selected}>
           {children}
         </StaticContainer>
       );
     } else {
-      var tabContents = <View />;
+      tabContents = <View />;
     }
 
     return (
diff --git a/Libraries/Components/TextInput/InputAccessoryView.js b/Libraries/Components/TextInput/InputAccessoryView.js
index 731476bc7138b7..2e7f906096c3b0 100644
--- a/Libraries/Components/TextInput/InputAccessoryView.js
+++ b/Libraries/Components/TextInput/InputAccessoryView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,15 +9,17 @@
  */
 'use strict';
 
-const ColorPropType = require('ColorPropType');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const Platform = require('Platform');
 const React = require('React');
 const StyleSheet = require('StyleSheet');
-const ViewPropTypes = require('ViewPropTypes');
 
 const requireNativeComponent = require('requireNativeComponent');
 
 const RCTInputAccessoryView = requireNativeComponent('RCTInputAccessoryView');
 
+import type {ViewStyleProp} from 'StyleSheet';
+
 /**
  * Note: iOS only
  *
@@ -76,20 +78,22 @@ const RCTInputAccessoryView = requireNativeComponent('RCTInputAccessoryView');
  * For an example, look at InputAccessoryViewExample.js in RNTester.
  */
 
-type Props = {
+type Props = $ReadOnly<{|
   +children: React.Node,
   /**
    * An ID which is used to associate this `InputAccessoryView` to
    * specified TextInput(s).
    */
-  nativeID?: string,
-  style?: ViewPropTypes.style,
-  backgroundColor?: ColorPropType,
-};
+  nativeID?: ?string,
+  style?: ?ViewStyleProp,
+  backgroundColor?: ?DeprecatedColorPropType,
+|}>;
 
 class InputAccessoryView extends React.Component<Props> {
   render(): React.Node {
-    console.warn('<InputAccessoryView> is not supported on Android yet.');
+    if (Platform.OS !== 'ios') {
+      console.warn('<InputAccessoryView> is only supported on iOS.');
+    }
 
     if (React.Children.count(this.props.children) === 0) {
       return null;
diff --git a/Libraries/Components/TextInput/TextInput.js b/Libraries/Components/TextInput/TextInput.js
index d7d4d8c71e3a2f..c9a7f9a9c5fa9e 100644
--- a/Libraries/Components/TextInput/TextInput.js
+++ b/Libraries/Components/TextInput/TextInput.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,32 +9,33 @@
  */
 'use strict';
 
-const ColorPropType = require('ColorPropType');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
 const DocumentSelectionState = require('DocumentSelectionState');
 const EventEmitter = require('EventEmitter');
 const NativeMethodsMixin = require('NativeMethodsMixin');
 const Platform = require('Platform');
-const React = require('React');
-const createReactClass = require('create-react-class');
 const PropTypes = require('prop-types');
+const React = require('React');
 const ReactNative = require('ReactNative');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
 const TextAncestor = require('TextAncestor');
 const TextInputState = require('TextInputState');
-const TimerMixin = require('react-timer-mixin');
 const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
 const UIManager = require('UIManager');
-const ViewPropTypes = require('ViewPropTypes');
 
+const createReactClass = require('create-react-class');
 const emptyFunction = require('fbjs/lib/emptyFunction');
 const invariant = require('fbjs/lib/invariant');
 const requireNativeComponent = require('requireNativeComponent');
 const warning = require('fbjs/lib/warning');
 
+import type {TextStyleProp, ViewStyleProp} from 'StyleSheet';
 import type {ColorValue} from 'StyleSheetTypes';
-import type {TextStyleProp} from 'StyleSheet';
 import type {ViewProps} from 'ViewPropTypes';
+import type {SyntheticEvent, ScrollEvent} from 'CoreEventTypes';
+import type {PressEvent} from 'CoreEventTypes';
 
 let AndroidTextInput;
 let RCTMultilineTextInputView;
@@ -64,11 +65,73 @@ const onlyMultiline = {
   children: true,
 };
 
-type Event = Object;
-type Selection = {
+export type ChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    eventCount: number,
+    target: number,
+    text: string,
+  |}>,
+>;
+
+export type TextInputEvent = SyntheticEvent<
+  $ReadOnly<{|
+    eventCount: number,
+    previousText: string,
+    range: $ReadOnly<{|
+      start: number,
+      end: number,
+    |}>,
+    target: number,
+    text: string,
+  |}>,
+>;
+
+export type ContentSizeChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    target: number,
+    contentSize: $ReadOnly<{|
+      width: number,
+      height: number,
+    |}>,
+  |}>,
+>;
+
+type TargetEvent = SyntheticEvent<
+  $ReadOnly<{|
+    target: number,
+  |}>,
+>;
+
+export type BlurEvent = TargetEvent;
+export type FocusEvent = TargetEvent;
+
+type Selection = $ReadOnly<{|
   start: number,
-  end?: number,
-};
+  end: number,
+|}>;
+
+export type SelectionChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    selection: Selection,
+    target: number,
+  |}>,
+>;
+
+export type KeyPressEvent = SyntheticEvent<
+  $ReadOnly<{|
+    key: string,
+    target?: ?number,
+    eventCount?: ?number,
+  |}>,
+>;
+
+export type EditingEvent = SyntheticEvent<
+  $ReadOnly<{|
+    eventCount: number,
+    text: string,
+    target: number,
+  |}>,
+>;
 
 const DataDetectorTypes = [
   // iOS+macOS
@@ -175,7 +238,10 @@ type IOSProps = $ReadOnly<{|
     | 'telephoneNumber'
     | 'username'
     | 'password'
+    | 'newPassword'
+    | 'oneTimeCode'
   ),
+  scrollEnabled?: ?boolean,
 |}>;
 
 type AndroidProps = $ReadOnly<{|
@@ -189,29 +255,30 @@ type AndroidProps = $ReadOnly<{|
 |}>;
 
 type Props = $ReadOnly<{|
-  ...ViewProps,
+  ...$Diff<ViewProps, $ReadOnly<{|style: ?ViewStyleProp|}>>,
   ...IOSProps,
   ...AndroidProps,
   autoCapitalize?: ?AutoCapitalize,
   autoCorrect?: ?boolean,
   autoFocus?: ?boolean,
   allowFontScaling?: ?boolean,
+  maxFontSizeMultiplier?: ?number,
   editable?: ?boolean,
   keyboardType?: ?KeyboardType,
   returnKeyType?: ?ReturnKeyType,
   maxLength?: ?number,
   multiline?: ?boolean,
-  onBlur?: ?Function,
-  onFocus?: ?Function,
-  onChange?: ?Function,
-  onChangeText?: ?Function,
-  onContentSizeChange?: ?Function,
-  onTextInput?: ?Function,
-  onEndEditing?: ?Function,
-  onSelectionChange?: ?Function,
-  onSubmitEditing?: ?Function,
-  onKeyPress?: ?Function,
-  onScroll?: ?Function,
+  onBlur?: ?(e: BlurEvent) => void,
+  onFocus?: ?(e: FocusEvent) => void,
+  onChange?: ?(e: ChangeEvent) => void,
+  onChangeText?: ?(text: string) => void,
+  onContentSizeChange?: ?(e: ContentSizeChangeEvent) => void,
+  onTextInput?: ?(e: TextInputEvent) => void,
+  onEndEditing?: ?(e: EditingEvent) => void,
+  onSelectionChange?: ?(e: SelectionChangeEvent) => void,
+  onSubmitEditing?: ?(e: EditingEvent) => void,
+  onKeyPress?: ?(e: KeyPressEvent) => void,
+  onScroll?: ?(e: ScrollEvent) => void,
   placeholder?: ?Stringish,
   placeholderTextColor?: ?ColorValue,
   secureTextEntry?: ?boolean,
@@ -351,7 +418,7 @@ const TextInput = createReactClass({
     },
   },
   propTypes: {
-    ...ViewPropTypes,
+    ...DeprecatedViewPropTypes,
     /**
      * Can tell `TextInput` to automatically capitalize certain characters.
      *
@@ -386,6 +453,14 @@ const TextInput = createReactClass({
      * default is `true`.
      */
     allowFontScaling: PropTypes.bool,
+    /**
+     * Specifies largest possible scale a font can reach when `allowFontScaling` is enabled.
+     * Possible values:
+     * `null/undefined` (default): inherit from the parent node or the global default (0)
+     * `0`: no max, ignore parent/global default
+     * `>= 1`: sets the maxFontSizeMultiplier of this node to this value
+     */
+    maxFontSizeMultiplier: PropTypes.number,
     /**
      * If `false`, text is not editable. The default value is `true`.
      */
@@ -600,7 +675,13 @@ const TextInput = createReactClass({
     /**
      * The text color of the placeholder string.
      */
-    placeholderTextColor: ColorPropType,
+    placeholderTextColor: DeprecatedColorPropType,
+    /**
+     * If `false`, scrolling of the text view will be disabled.
+     * The default value is `true`. Does only work with 'multiline={true}'.
+     * @platform ios
+     */
+    scrollEnabled: PropTypes.bool,
     /**
      * If `false`, scrolling of the text view will be disabled.
      * The default value is `true`. Does only work with 'multiline={true}'.
@@ -615,7 +696,7 @@ const TextInput = createReactClass({
     /**
      * The highlight and cursor color of the text input.
      */
-    selectionColor: ColorPropType,
+    selectionColor: DeprecatedColorPropType,
     /**
      * An instance of `DocumentSelectionState`, this is some state that is responsible for
      * maintaining selection information for a document.
@@ -707,7 +788,7 @@ const TextInput = createReactClass({
      * The color of the `TextInput` underline.
      * @platform android
      */
-    underlineColorAndroid: ColorPropType,
+    underlineColorAndroid: DeprecatedColorPropType,
 
     /**
      * If defined, the provided image resource will be rendered on the left.
@@ -818,9 +899,11 @@ const TextInput = createReactClass({
       'telephoneNumber',
       'username',
       'password',
+      'newPassword',
+      'oneTimeCode',
     ]),
   },
-  getDefaultProps(): Object {
+  getDefaultProps() {
     return {
       allowFontScaling: true,
       underlineColorAndroid: 'transparent',
@@ -830,7 +913,7 @@ const TextInput = createReactClass({
    * `NativeMethodsMixin` will look for this when invoking `setNativeProps`. We
    * make `this` look like an actual native component class.
    */
-  mixins: [NativeMethodsMixin, TimerMixin],
+  mixins: [NativeMethodsMixin],
 
   /**
    * Returns `true` if the input is currently focused; `false` otherwise.
@@ -854,6 +937,7 @@ const TextInput = createReactClass({
   _focusSubscription: (undefined: ?Function),
   _lastNativeText: (undefined: ?string),
   _lastNativeSelection: (undefined: ?Selection),
+  _rafId: (null: ?AnimationFrameID),
 
   componentDidMount: function() {
     this._lastNativeText = this.props.value;
@@ -868,7 +952,7 @@ const TextInput = createReactClass({
         'focus',
         el => {
           if (this === el) {
-            this.requestAnimationFrame(this.focus);
+            this._rafId = requestAnimationFrame(this.focus);
           } else if (this.isFocused()) {
             this.blur();
           }
@@ -879,7 +963,7 @@ const TextInput = createReactClass({
       }
     } else {
       if (this.props.autoFocus) {
-        this.requestAnimationFrame(this.focus);
+        this._rafId = requestAnimationFrame(this.focus);
       }
     }
   },
@@ -893,6 +977,9 @@ const TextInput = createReactClass({
     if (tag != null) {
       TextInputState.unregisterInput(tag);
     }
+    if (this._rafId != null) {
+      cancelAnimationFrame(this._rafId);
+    }
   },
 
   contextTypes: {
@@ -911,7 +998,7 @@ const TextInput = createReactClass({
     let textInput;
     if (Platform.OS === 'ios' || Platform.OS === 'macos') {
       // TODO(macOS ISS#2323203)
-      textInput = UIManager.RCTVirtualText
+      textInput = UIManager.getViewManagerConfig('RCTVirtualText')
         ? this._renderIOS()
         : this._renderIOSLegacy();
     } else if (Platform.OS === 'android') {
@@ -985,7 +1072,10 @@ const TextInput = createReactClass({
       );
       if (childCount >= 1) {
         children = (
-          <Text style={props.style} allowFontScaling={props.allowFontScaling}>
+          <Text
+            style={props.style}
+            allowFontScaling={props.allowFontScaling}
+            maxFontSizeMultiplier={props.maxFontSizeMultiplier}>
             {children}
           </Text>
         );
@@ -1085,10 +1175,9 @@ const TextInput = createReactClass({
   _renderAndroid: function() {
     const props = Object.assign({}, this.props);
     props.style = [this.props.style];
-    props.autoCapitalize =
-      UIManager.AndroidTextInput.Constants.AutoCapitalizationType[
-        props.autoCapitalize || 'sentences'
-      ];
+    props.autoCapitalize = UIManager.getViewManagerConfig(
+      'AndroidTextInput',
+    ).Constants.AutoCapitalizationType[props.autoCapitalize || 'sentences'];
     /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
      * suppresses an error when upgrading Flow's support for React. To see the
      * error delete this comment and run Flow. */
@@ -1158,7 +1247,7 @@ const TextInput = createReactClass({
     );
   }, // ]TODO(windows ISS)
 
-  _onFocus: function(event: Event) {
+  _onFocus: function(event: FocusEvent) {
     // [TODO(android ISS)
     // Set the focused TextInput field info in TextInputState.
     // Delaying this to onFocus native event ensures that -
@@ -1177,16 +1266,16 @@ const TextInput = createReactClass({
     }
   },
 
-  _onPress: function(event: Event) {
+  _onPress: function(event: PressEvent) {
     if (this.props.editable || this.props.editable === undefined) {
       this.focus();
     }
   },
 
-  _onChange: function(event: Event) {
+  _onChange: function(event: ChangeEvent) {
     // Make sure to fire the mostRecentEventCount first so it is already set on
     // native when the text value is set.
-    if (this._inputRef) {
+    if (this._inputRef && this._inputRef.setNativeProps) {
       this._inputRef.setNativeProps({
         mostRecentEventCount: event.nativeEvent.eventCount,
       });
@@ -1206,7 +1295,7 @@ const TextInput = createReactClass({
     this.forceUpdate();
   },
 
-  _onSelectionChange: function(event: Event) {
+  _onSelectionChange: function(event: SelectionChangeEvent) {
     this.props.onSelectionChange && this.props.onSelectionChange(event);
 
     if (!this._inputRef) {
@@ -1247,7 +1336,11 @@ const TextInput = createReactClass({
       nativeProps.selection = this.props.selection;
     }
 
-    if (Object.keys(nativeProps).length > 0 && this._inputRef) {
+    if (
+      Object.keys(nativeProps).length > 0 &&
+      this._inputRef &&
+      this._inputRef.setNativeProps
+    ) {
       this._inputRef.setNativeProps(nativeProps);
     }
 
@@ -1266,6 +1359,10 @@ const TextInput = createReactClass({
     TextInputState.clearFocusedTextInput(
       ReactNative.findNodeHandle(this._inputRef),
     ); // ]TODO(android ISS)
+
+    // This is a hack to fix https://fburl.com/toehyir8
+    // @todo(rsnara) Figure out why this is necessary.
+    this.blur();
     if (this.props.onBlur) {
       this.props.onBlur(event);
     }
@@ -1275,11 +1372,11 @@ const TextInput = createReactClass({
     }
   },
 
-  _onTextInput: function(event: Event) {
+  _onTextInput: function(event: TextInputEvent) {
     this.props.onTextInput && this.props.onTextInput(event);
   },
 
-  _onScroll: function(event: Event) {
+  _onScroll: function(event: ScrollEvent) {
     this.props.onScroll && this.props.onScroll(event);
   },
 });
diff --git a/Libraries/Components/TextInput/TextInputState.js b/Libraries/Components/TextInput/TextInputState.js
index b1a28cee149c75..36107f6cf99908 100644
--- a/Libraries/Components/TextInput/TextInputState.js
+++ b/Libraries/Components/TextInput/TextInputState.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -45,7 +45,8 @@ function focusTextInput(textFieldID: ?number) {
     } else if (Platform.OS === 'android') {
       UIManager.dispatchViewManagerCommand(
         textFieldID,
-        UIManager.AndroidTextInput.Commands.focusTextInput,
+        UIManager.getViewManagerConfig('AndroidTextInput').Commands
+          .focusTextInput,
         null,
       );
     } else if (Platform.OS === 'win32') {
@@ -74,7 +75,8 @@ function blurTextInput(textFieldID: ?number) {
     } else if (Platform.OS === 'android') {
       UIManager.dispatchViewManagerCommand(
         textFieldID,
-        UIManager.AndroidTextInput.Commands.blurTextInput,
+        UIManager.getViewManagerConfig('AndroidTextInput').Commands
+          .blurTextInput,
         null,
       );
     } else if (Platform.OS === 'win32') {
diff --git a/Libraries/Components/TextInput/__tests__/TextInput-test.js b/Libraries/Components/TextInput/__tests__/TextInput-test.js
new file mode 100644
index 00000000000000..78d6884db03395
--- /dev/null
+++ b/Libraries/Components/TextInput/__tests__/TextInput-test.js
@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ * @flow-strict
+ */
+
+'use strict';
+
+const React = require('React');
+const ReactTestRenderer = require('react-test-renderer');
+const TextInput = require('TextInput');
+
+import Component from '@reactions/component';
+
+const {enter} = require('ReactNativeTestTools');
+
+jest.unmock('TextInput');
+
+describe('TextInput tests', () => {
+  let input;
+  let onChangeListener;
+  let onChangeTextListener;
+  const initialValue = 'initialValue';
+  beforeEach(() => {
+    onChangeListener = jest.fn();
+    onChangeTextListener = jest.fn();
+    const renderTree = ReactTestRenderer.create(
+      <Component initialState={{text: initialValue}}>
+        {({setState, state}) => (
+          <TextInput
+            value={state.text}
+            onChangeText={text => {
+              onChangeTextListener(text);
+              setState({text});
+            }}
+            onChange={event => {
+              onChangeListener(event);
+            }}
+          />
+        )}
+      </Component>,
+    );
+    input = renderTree.root.findByType(TextInput);
+  });
+  it('has expected instance functions', () => {
+    expect(input.instance.isFocused).toBeInstanceOf(Function); // Would have prevented S168585
+    expect(input.instance.clear).toBeInstanceOf(Function);
+    expect(input.instance.focus).toBeInstanceOf(Function);
+    expect(input.instance.blur).toBeInstanceOf(Function);
+    expect(input.instance.setNativeProps).toBeInstanceOf(Function);
+    expect(input.instance.measure).toBeInstanceOf(Function);
+    expect(input.instance.measureInWindow).toBeInstanceOf(Function);
+    expect(input.instance.measureLayout).toBeInstanceOf(Function);
+  });
+  it('calls onChange callbacks', () => {
+    expect(input.props.value).toBe(initialValue);
+    const message = 'This is a test message';
+    enter(input, message);
+    expect(input.props.value).toBe(message);
+    expect(onChangeTextListener).toHaveBeenCalledWith(message);
+    expect(onChangeListener).toHaveBeenCalledWith({
+      nativeEvent: {text: message},
+    });
+  });
+});
diff --git a/Libraries/Components/TimePickerAndroid/TimePickerAndroid.android.js b/Libraries/Components/TimePickerAndroid/TimePickerAndroid.android.js
index 6cdd964cc8cea2..87c44621dc089b 100644
--- a/Libraries/Components/TimePickerAndroid/TimePickerAndroid.android.js
+++ b/Libraries/Components/TimePickerAndroid/TimePickerAndroid.android.js
@@ -1,17 +1,22 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
 
 const TimePickerModule = require('NativeModules').TimePickerAndroid;
 
+import type {
+  TimePickerOptions,
+  TimePickerResult,
+} from './TimePickerAndroidTypes';
+
 /**
  * Opens the standard Android time picker dialog.
  *
@@ -52,22 +57,18 @@ class TimePickerAndroid {
    * still be resolved with action being `TimePickerAndroid.dismissedAction` and all the other keys
    * being undefined. **Always** check whether the `action` before reading the values.
    */
-  static async open(options: Object): Promise<Object> {
+  static async open(options: TimePickerOptions): Promise<TimePickerResult> {
     return TimePickerModule.open(options);
   }
 
   /**
    * A time has been selected.
    */
-  static get timeSetAction() {
-    return 'timeSetAction';
-  }
+  static +timeSetAction: 'timeSetAction' = 'timeSetAction';
   /**
    * The dialog has been dismissed.
    */
-  static get dismissedAction() {
-    return 'dismissedAction';
-  }
+  static +dismissedAction: 'dismissedAction' = 'dismissedAction';
 }
 
 module.exports = TimePickerAndroid;
diff --git a/Libraries/Components/TimePickerAndroid/TimePickerAndroid.ios.js b/Libraries/Components/TimePickerAndroid/TimePickerAndroid.ios.js
index 6a0ecfa656313c..59ec50eb27260c 100644
--- a/Libraries/Components/TimePickerAndroid/TimePickerAndroid.ios.js
+++ b/Libraries/Components/TimePickerAndroid/TimePickerAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/TimePickerAndroid/TimePickerAndroidTypes.js b/Libraries/Components/TimePickerAndroid/TimePickerAndroidTypes.js
new file mode 100644
index 00000000000000..aafa572be6c052
--- /dev/null
+++ b/Libraries/Components/TimePickerAndroid/TimePickerAndroidTypes.js
@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict-local
+ */
+
+'use strict';
+
+export type TimePickerOptions = {|
+  hour?: number,
+  minute?: number,
+  is24Hour?: boolean,
+  mode?: 'clock' | 'spinner' | 'default',
+|};
+
+export type TimePickerResult = $ReadOnly<{|
+  action: string,
+  hour: number,
+  minute: number,
+|}>;
diff --git a/Libraries/Components/ToastAndroid/ToastAndroid.android.js b/Libraries/Components/ToastAndroid/ToastAndroid.android.js
index c661adf503565d..832887453c3fc0 100644
--- a/Libraries/Components/ToastAndroid/ToastAndroid.android.js
+++ b/Libraries/Components/ToastAndroid/ToastAndroid.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ToastAndroid/ToastAndroid.ios.js b/Libraries/Components/ToastAndroid/ToastAndroid.ios.js
index adb6032ef6731b..ed5fcf02f40116 100644
--- a/Libraries/Components/ToastAndroid/ToastAndroid.ios.js
+++ b/Libraries/Components/ToastAndroid/ToastAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
index 44bcfc03d8046e..aa92f9cc9bd250 100644
--- a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
+++ b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.android.js
@@ -1,32 +1,26 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
+ * @flow
  */
 
 'use strict';
 
-const Image = require('Image');
-const NativeMethodsMixin = require('NativeMethodsMixin');
 const React = require('React');
-const PropTypes = require('prop-types');
 const UIManager = require('UIManager');
-const ViewPropTypes = require('ViewPropTypes');
-const ColorPropType = require('ColorPropType');
 
-const createReactClass = require('create-react-class');
 const requireNativeComponent = require('requireNativeComponent');
 const resolveAssetSource = require('resolveAssetSource');
 
-const optionalImageSource = PropTypes.oneOfType([
-  Image.propTypes.source,
-  // Image.propTypes.source is required but we want it to be optional, so we OR
-  // it with a nullable propType.
-  PropTypes.oneOf([]),
-]);
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {ImageSource} from 'ImageSource';
+import type {ColorValue} from 'StyleSheetTypes';
+import type {ViewProps} from 'ViewPropTypes';
+import type {NativeComponent} from 'ReactNative';
 
 /**
  * React component that wraps the Android-only [`Toolbar` widget][0]. A Toolbar can display a logo,
@@ -63,149 +57,195 @@ const optionalImageSource = PropTypes.oneOfType([
  *
  * [0]: https://developer.android.com/reference/android/support/v7/widget/Toolbar.html
  */
-const ToolbarAndroid = createReactClass({
-  displayName: 'ToolbarAndroid',
-  mixins: [NativeMethodsMixin],
-
-  propTypes: {
-    ...ViewPropTypes,
-    /**
-     * Sets possible actions on the toolbar as part of the action menu. These are displayed as icons
-     * or text on the right side of the widget. If they don't fit they are placed in an 'overflow'
-     * menu.
-     *
-     * This property takes an array of objects, where each object has the following keys:
-     *
-     * * `title`: **required**, the title of this action
-     * * `icon`: the icon for this action, e.g. `require('./some_icon.png')`
-     * * `show`: when to show this action as an icon or hide it in the overflow menu: `always`,
-     * `ifRoom` or `never`
-     * * `showWithText`: boolean, whether to show text alongside the icon or not
-     */
-    actions: PropTypes.arrayOf(
-      PropTypes.shape({
-        title: PropTypes.string.isRequired,
-        icon: optionalImageSource,
-        show: PropTypes.oneOf(['always', 'ifRoom', 'never']),
-        showWithText: PropTypes.bool,
-      }),
-    ),
-    /**
-     * Sets the toolbar logo.
-     */
-    logo: optionalImageSource,
-    /**
-     * Sets the navigation icon.
-     */
-    navIcon: optionalImageSource,
-    /**
-     * Callback that is called when an action is selected. The only argument that is passed to the
-     * callback is the position of the action in the actions array.
-     */
-    onActionSelected: PropTypes.func,
-    /**
-     * Callback called when the icon is selected.
-     */
-    onIconClicked: PropTypes.func,
-    /**
-     * Sets the overflow icon.
-     */
-    overflowIcon: optionalImageSource,
-    /**
-     * Sets the toolbar subtitle.
-     */
-    subtitle: PropTypes.string,
-    /**
-     * Sets the toolbar subtitle color.
-     */
-    subtitleColor: ColorPropType,
-    /**
-     * Sets the toolbar title.
-     */
-    title: PropTypes.string,
-    /**
-     * Sets the toolbar title color.
-     */
-    titleColor: ColorPropType,
-    /**
-     * Sets the content inset for the toolbar starting edge.
-     *
-     * The content inset affects the valid area for Toolbar content other than
-     * the navigation button and menu. Insets define the minimum margin for
-     * these components and can be used to effectively align Toolbar content
-     * along well-known gridlines.
-     */
-    contentInsetStart: PropTypes.number,
-    /**
-     * Sets the content inset for the toolbar ending edge.
-     *
-     * The content inset affects the valid area for Toolbar content other than
-     * the navigation button and menu. Insets define the minimum margin for
-     * these components and can be used to effectively align Toolbar content
-     * along well-known gridlines.
-     */
-    contentInsetEnd: PropTypes.number,
-    /**
-     * Used to set the toolbar direction to RTL.
-     * In addition to this property you need to add
-     *
-     *   android:supportsRtl="true"
-     *
-     * to your application AndroidManifest.xml and then call
-     * `setLayoutDirection(LayoutDirection.RTL)` in your MainActivity
-     * `onCreate` method.
-     */
-    rtl: PropTypes.bool,
-    /**
-     * Used to locate this view in end-to-end tests.
-     */
-    testID: PropTypes.string,
-  },
 
-  render: function() {
-    const nativeProps = {
-      ...this.props,
+const NativeToolbar = requireNativeComponent('ToolbarAndroid');
+
+type Action = $ReadOnly<{|
+  title: string,
+  icon?: ?ImageSource,
+  show?: 'always' | 'ifRoom' | 'never',
+  showWithText?: boolean,
+|}>;
+
+type ToolbarAndroidChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    position: number,
+  |}>,
+>;
+
+type ToolbarAndroidProps = $ReadOnly<{|
+  ...ViewProps,
+  /**
+   * or text on the right side of the widget. If they don't fit they are placed in an 'overflow'
+   * Sets possible actions on the toolbar as part of the action menu. These are displayed as icons
+   * menu.
+   *
+   * This property takes an array of objects, where each object has the following keys:
+   *
+   * * `title`: **required**, the title of this action
+   * * `icon`: the icon for this action, e.g. `require('./some_icon.png')`
+   * * `show`: when to show this action as an icon or hide it in the overflow menu: `always`,
+   * `ifRoom` or `never`
+   * * `showWithText`: boolean, whether to show text alongside the icon or not
+   */
+  actions?: ?Array<Action>,
+  /**
+   * Sets the toolbar logo.
+   */
+  logo?: ?ImageSource,
+  /**
+   * Sets the navigation icon.
+   */
+  navIcon?: ?ImageSource,
+  /**
+   * Callback that is called when an action is selected. The only argument that is passed to the
+   * callback is the position of the action in the actions array.
+   */
+  onActionSelected?: ?(position: number) => void,
+  /**
+   * Callback called when the icon is selected.
+   */
+  onIconClicked?: ?() => void,
+  /**
+   * Sets the overflow icon.
+   */
+  overflowIcon?: ?ImageSource,
+  /**
+   * Sets the toolbar subtitle.
+   */
+  subtitle?: ?string,
+  /**
+   * Sets the toolbar subtitle color.
+   */
+  subtitleColor?: ?ColorValue,
+  /**
+   * Sets the toolbar title.
+   */
+  title?: ?Stringish,
+  /**
+   * Sets the toolbar title color.
+   */
+  titleColor?: ?ColorValue,
+  /**
+   * Sets the content inset for the toolbar starting edge.
+   *
+   * The content inset affects the valid area for Toolbar content other than
+   * the navigation button and menu. Insets define the minimum margin for
+   * these components and can be used to effectively align Toolbar content
+   * along well-known gridlines.
+   */
+  contentInsetStart?: ?number,
+  /**
+   * Sets the content inset for the toolbar ending edge.
+   *
+   * The content inset affects the valid area for Toolbar content other than
+   * the navigation button and menu. Insets define the minimum margin for
+   * these components and can be used to effectively align Toolbar content
+   * along well-known gridlines.
+   */
+  contentInsetEnd?: ?number,
+  /**
+   * Used to set the toolbar direction to RTL.
+   * In addition to this property you need to add
+   *
+   *   android:supportsRtl="true"
+   *
+   * to your application AndroidManifest.xml and then call
+   * `setLayoutDirection(LayoutDirection.RTL)` in your MainActivity
+   * `onCreate` method.
+   */
+  rtl?: ?boolean,
+  /**
+   * Used to locate this view in end-to-end tests.
+   */
+  testID?: ?string,
+|}>;
+
+type Props = $ReadOnly<{|
+  ...ToolbarAndroidProps,
+  forwardedRef: ?React.Ref<typeof NativeToolbar>,
+|}>;
+
+class ToolbarAndroid extends React.Component<Props> {
+  _onSelect = (event: ToolbarAndroidChangeEvent) => {
+    const position = event.nativeEvent.position;
+    if (position === -1) {
+      this.props.onIconClicked && this.props.onIconClicked();
+    } else {
+      this.props.onActionSelected && this.props.onActionSelected(position);
+    }
+  };
+
+  render() {
+    const {
+      onIconClicked,
+      onActionSelected,
+      forwardedRef,
+      ...otherProps
+    } = this.props;
+
+    const nativeProps: {...typeof otherProps, nativeActions?: Array<Action>} = {
+      ...otherProps,
     };
+
     if (this.props.logo) {
       nativeProps.logo = resolveAssetSource(this.props.logo);
     }
+
     if (this.props.navIcon) {
       nativeProps.navIcon = resolveAssetSource(this.props.navIcon);
     }
+
     if (this.props.overflowIcon) {
       nativeProps.overflowIcon = resolveAssetSource(this.props.overflowIcon);
     }
+
     if (this.props.actions) {
       const nativeActions = [];
       for (let i = 0; i < this.props.actions.length; i++) {
         const action = {
-          ...this.props.actions[i],
+          icon: this.props.actions[i].icon,
+          show: this.props.actions[i].show,
         };
+
         if (action.icon) {
           action.icon = resolveAssetSource(action.icon);
         }
         if (action.show) {
-          action.show =
-            UIManager.ToolbarAndroid.Constants.ShowAsAction[action.show];
+          action.show = UIManager.getViewManagerConfig(
+            'ToolbarAndroid',
+          ).Constants.ShowAsAction[action.show];
         }
-        nativeActions.push(action);
+
+        nativeActions.push({
+          ...this.props.actions[i],
+          ...action,
+        });
       }
+
       nativeProps.nativeActions = nativeActions;
     }
 
-    return <NativeToolbar onSelect={this._onSelect} {...nativeProps} />;
-  },
+    return (
+      <NativeToolbar
+        onSelect={this._onSelect}
+        {...nativeProps}
+        ref={forwardedRef}
+      />
+    );
+  }
+}
 
-  _onSelect: function(event) {
-    const position = event.nativeEvent.position;
-    if (position === -1) {
-      this.props.onIconClicked && this.props.onIconClicked();
-    } else {
-      this.props.onActionSelected && this.props.onActionSelected(position);
-    }
+// $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+const ToolbarAndroidToExport = React.forwardRef(
+  (
+    props: ToolbarAndroidProps,
+    forwardedRef: ?React.Ref<typeof NativeToolbar>,
+  ) => {
+    return <ToolbarAndroid {...props} forwardedRef={forwardedRef} />;
   },
-});
-
-const NativeToolbar = requireNativeComponent('ToolbarAndroid');
+);
 
-module.exports = ToolbarAndroid;
+module.exports = (ToolbarAndroidToExport: Class<
+  NativeComponent<ToolbarAndroidProps>,
+>);
diff --git a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.ios.js b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.ios.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/Components/ToolbarAndroid/ToolbarAndroid.ios.js
+++ b/Libraries/Components/ToolbarAndroid/ToolbarAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/BoundingDimensions.js b/Libraries/Components/Touchable/BoundingDimensions.js
index 755da5ab8937aa..28622a5b2da7f1 100644
--- a/Libraries/Components/Touchable/BoundingDimensions.js
+++ b/Libraries/Components/Touchable/BoundingDimensions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/PooledClass.js b/Libraries/Components/Touchable/PooledClass.js
index a6934facae7049..0d6168a3fa51cf 100644
--- a/Libraries/Components/Touchable/PooledClass.js
+++ b/Libraries/Components/Touchable/PooledClass.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/Position.js b/Libraries/Components/Touchable/Position.js
index 19899d74c49820..bc6a45cc6c6a1f 100644
--- a/Libraries/Components/Touchable/Position.js
+++ b/Libraries/Components/Touchable/Position.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/Touchable.js b/Libraries/Components/Touchable/Touchable.js
index 3f1874c8aac4a4..5383de2da4ef8f 100644
--- a/Libraries/Components/Touchable/Touchable.js
+++ b/Libraries/Components/Touchable/Touchable.js
@@ -1,9 +1,10 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow
  * @format
  */
 
@@ -14,6 +15,7 @@ const Platform = require('Platform');
 const Position = require('Position');
 const React = require('React');
 const ReactNative = require('ReactNative');
+const StyleSheet = require('StyleSheet');
 const TVEventHandler = require('TVEventHandler');
 const TouchEventUtils = require('fbjs/lib/TouchEventUtils');
 const UIManager = require('UIManager');
@@ -22,6 +24,9 @@ const View = require('View');
 const keyMirror = require('fbjs/lib/keyMirror');
 const normalizeColor = require('normalizeColor');
 
+import type {PressEvent} from 'CoreEventTypes';
+import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
+
 /**
  * `Touchable`: Taps done right.
  *
@@ -110,6 +115,7 @@ const normalizeColor = require('normalizeColor');
 /**
  * Touchable states.
  */
+
 const States = keyMirror({
   NOT_RESPONDER: null, // Not the responder
   RESPONDER_INACTIVE_PRESS_IN: null, // Responder, inactive, in the `PressRect`
@@ -121,10 +127,33 @@ const States = keyMirror({
   ERROR: null,
 });
 
-/**
+type State =
+  | typeof States.NOT_RESPONDER
+  | typeof States.RESPONDER_INACTIVE_PRESS_IN
+  | typeof States.RESPONDER_INACTIVE_PRESS_OUT
+  | typeof States.RESPONDER_ACTIVE_PRESS_IN
+  | typeof States.RESPONDER_ACTIVE_PRESS_OUT
+  | typeof States.RESPONDER_ACTIVE_LONG_PRESS_IN
+  | typeof States.RESPONDER_ACTIVE_LONG_PRESS_OUT
+  | typeof States.ERROR;
+
+/*
  * Quick lookup map for states that are considered to be "active"
  */
+
+const baseStatesConditions = {
+  NOT_RESPONDER: false,
+  RESPONDER_INACTIVE_PRESS_IN: false,
+  RESPONDER_INACTIVE_PRESS_OUT: false,
+  RESPONDER_ACTIVE_PRESS_IN: false,
+  RESPONDER_ACTIVE_PRESS_OUT: false,
+  RESPONDER_ACTIVE_LONG_PRESS_IN: false,
+  RESPONDER_ACTIVE_LONG_PRESS_OUT: false,
+  ERROR: false,
+};
+
 const IsActive = {
+  ...baseStatesConditions,
   RESPONDER_ACTIVE_PRESS_OUT: true,
   RESPONDER_ACTIVE_PRESS_IN: true,
 };
@@ -134,12 +163,14 @@ const IsActive = {
  * therefore eligible to result in a "selection" if the press stops.
  */
 const IsPressingIn = {
+  ...baseStatesConditions,
   RESPONDER_INACTIVE_PRESS_IN: true,
   RESPONDER_ACTIVE_PRESS_IN: true,
   RESPONDER_ACTIVE_LONG_PRESS_IN: true,
 };
 
 const IsLongPressingIn = {
+  ...baseStatesConditions,
   RESPONDER_ACTIVE_LONG_PRESS_IN: true,
 };
 
@@ -156,6 +187,15 @@ const Signals = keyMirror({
   LONG_PRESS_DETECTED: null,
 });
 
+type Signal =
+  | typeof Signals.DELAY
+  | typeof Signals.RESPONDER_GRANT
+  | typeof Signals.RESPONDER_RELEASE
+  | typeof Signals.RESPONDER_TERMINATED
+  | typeof Signals.ENTER_PRESS_RECT
+  | typeof Signals.LEAVE_PRESS_RECT
+  | typeof Signals.LONG_PRESS_DETECTED;
+
 /**
  * Mapping from States x Signals => States
  */
@@ -390,7 +430,7 @@ const TouchableMixin = {
    * @param {SyntheticEvent} e Synthetic event from event system.
    *
    */
-  touchableHandleResponderGrant: function(e) {
+  touchableHandleResponderGrant: function(e: PressEvent) {
     const dispatchID = e.currentTarget;
     // Since e is used in a callback invoked on another event loop
     // (as in setTimeout etc), we need to call e.persist() on the
@@ -431,21 +471,21 @@ const TouchableMixin = {
   /**
    * Place as callback for a DOM element's `onResponderRelease` event.
    */
-  touchableHandleResponderRelease: function(e) {
+  touchableHandleResponderRelease: function(e: PressEvent) {
     this._receiveSignal(Signals.RESPONDER_RELEASE, e);
   },
 
   /**
    * Place as callback for a DOM element's `onResponderTerminate` event.
    */
-  touchableHandleResponderTerminate: function(e) {
+  touchableHandleResponderTerminate: function(e: PressEvent) {
     this._receiveSignal(Signals.RESPONDER_TERMINATED, e);
   },
 
   /**
    * Place as callback for a DOM element's `onResponderMove` event.
    */
-  touchableHandleResponderMove: function(e) {
+  touchableHandleResponderMove: function(e: PressEvent) {
     // Not enough time elapsed yet, wait for highlight -
     // this is just a perf optimization.
     if (
@@ -632,7 +672,14 @@ const TouchableMixin = {
     UIManager.measure(tag, this._handleQueryLayout);
   },
 
-  _handleQueryLayout: function(l, t, w, h, globalX, globalY) {
+  _handleQueryLayout: function(
+    l: number,
+    t: number,
+    w: number,
+    h: number,
+    globalX: number,
+    globalY: number,
+  ) {
     //don't do anything UIManager failed to measure node
     if (!l && !t && !w && !h && !globalX && !globalY) {
       return;
@@ -651,12 +698,12 @@ const TouchableMixin = {
     );
   },
 
-  _handleDelay: function(e) {
+  _handleDelay: function(e: PressEvent) {
     this.touchableDelayTimeout = null;
     this._receiveSignal(Signals.DELAY, e);
   },
 
-  _handleLongDelay: function(e) {
+  _handleLongDelay: function(e: PressEvent) {
     this.longPressDelayTimeout = null;
     const curState = this.state.touchable.touchState;
     if (
@@ -684,7 +731,7 @@ const TouchableMixin = {
    * @throws Error if invalid state transition or unrecognized signal.
    * @sideeffects
    */
-  _receiveSignal: function(signal, e) {
+  _receiveSignal: function(signal: Signal, e: PressEvent) {
     const responderID = this.state.touchable.responderID;
     const curState = this.state.touchable.touchState;
     const nextState = Transitions[curState] && Transitions[curState][signal];
@@ -724,14 +771,14 @@ const TouchableMixin = {
     this.longPressDelayTimeout = null;
   },
 
-  _isHighlight: function(state) {
+  _isHighlight: function(state: State) {
     return (
       state === States.RESPONDER_ACTIVE_PRESS_IN ||
       state === States.RESPONDER_ACTIVE_LONG_PRESS_IN
     );
   },
 
-  _savePressInLocation: function(e) {
+  _savePressInLocation: function(e: PressEvent) {
     const touch = TouchEventUtils.extractSingleTouch(e.nativeEvent);
     const pageX = touch && touch.pageX;
     const pageY = touch && touch.pageY;
@@ -740,7 +787,12 @@ const TouchableMixin = {
     this.pressInLocation = {pageX, pageY, locationX, locationY};
   },
 
-  _getDistanceBetweenPoints: function(aX, aY, bX, bY) {
+  _getDistanceBetweenPoints: function(
+    aX: number,
+    aY: number,
+    bX: number,
+    bY: number,
+  ) {
     const deltaX = aX - bX;
     const deltaY = aY - bY;
     return Math.sqrt(deltaX * deltaX + deltaY * deltaY);
@@ -757,7 +809,12 @@ const TouchableMixin = {
    * @param {Event} e Native event.
    * @sideeffects
    */
-  _performSideEffectsForTransition: function(curState, nextState, signal, e) {
+  _performSideEffectsForTransition: function(
+    curState: State,
+    nextState: State,
+    signal: Signal,
+    e: PressEvent,
+  ) {
     const curIsHighlight = this._isHighlight(curState);
     const newIsHighlight = this._isHighlight(nextState);
 
@@ -812,12 +869,12 @@ const TouchableMixin = {
     UIManager.playTouchSound();
   },
 
-  _startHighlight: function(e) {
+  _startHighlight: function(e: PressEvent) {
     this._savePressInLocation(e);
     this.touchableHandleActivePressIn && this.touchableHandleActivePressIn(e);
   },
 
-  _endHighlight: function(e) {
+  _endHighlight: function(e: PressEvent) {
     if (this.touchableHandleActivePressOut) {
       if (
         this.touchableGetPressOutDelayMS &&
@@ -839,7 +896,13 @@ const Touchable = {
   /**
    * Renders a debugging overlay to visualize touch target with hitSlop (might not work on Android).
    */
-  renderDebugView: ({color, hitSlop}) => {
+  renderDebugView: ({
+    color,
+    hitSlop,
+  }: {
+    color: string | number,
+    hitSlop: EdgeInsetsProp,
+  }) => {
     if (!Touchable.TOUCH_TARGET_DEBUG) {
       return null;
     }
@@ -853,22 +916,34 @@ const Touchable = {
     for (const key in hitSlop) {
       debugHitSlopStyle[key] = -hitSlop[key];
     }
+    const normalizedColor = normalizeColor(color);
+    if (typeof normalizedColor !== 'number') {
+      return null;
+    }
     const hexColor =
-      '#' + ('00000000' + normalizeColor(color).toString(16)).substr(-8);
+      '#' + ('00000000' + normalizedColor.toString(16)).substr(-8);
     return (
       <View
         pointerEvents="none"
-        style={{
-          position: 'absolute',
-          borderColor: hexColor.slice(0, -2) + '55', // More opaque
-          borderWidth: 1,
-          borderStyle: 'dashed',
-          backgroundColor: hexColor.slice(0, -2) + '0F', // Less opaque
-          ...debugHitSlopStyle,
-        }}
+        style={[
+          styles.debug,
+          {
+            borderColor: hexColor.slice(0, -2) + '55', // More opaque
+            backgroundColor: hexColor.slice(0, -2) + '0F', // Less opaque
+            ...debugHitSlopStyle,
+          },
+        ]}
       />
     );
   },
 };
 
+const styles = StyleSheet.create({
+  debug: {
+    position: 'absolute',
+    borderWidth: 1,
+    borderStyle: 'dashed',
+  },
+});
+
 module.exports = Touchable;
diff --git a/Libraries/Components/Touchable/TouchableBounce.js b/Libraries/Components/Touchable/TouchableBounce.js
index 89b0f9747a0147..25e0b9c4df8249 100644
--- a/Libraries/Components/Touchable/TouchableBounce.js
+++ b/Libraries/Components/Touchable/TouchableBounce.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,20 @@
 'use strict';
 
 const Animated = require('Animated');
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
 const NativeMethodsMixin = require('NativeMethodsMixin');
-const React = require('React');
-const createReactClass = require('create-react-class');
 const PropTypes = require('prop-types');
+const React = require('React');
 const Touchable = require('Touchable');
 const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
-const ViewPropTypes = require('ViewPropTypes');
+
+const createReactClass = require('create-react-class');
 
 import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
-import type {Props as TouchableWithoutFeedbackProps} from 'TouchableWithoutFeedback';
 import type {ViewStyleProp} from 'StyleSheet';
-
-type Event = Object;
+import type {Props as TouchableWithoutFeedbackProps} from 'TouchableWithoutFeedback';
+import type {PressEvent} from 'CoreEventTypes';
 
 type State = {
   animationID: ?number,
@@ -35,8 +35,8 @@ const PRESS_RETENTION_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
 type Props = $ReadOnly<{|
   ...TouchableWithoutFeedbackProps,
 
-  onPressWithCompletion?: ?Function,
-  onPressAnimationComplete?: ?Function,
+  onPressWithCompletion?: ?(fn: () => void) => void,
+  onPressAnimationComplete?: ?() => void,
   pressRetentionOffset?: ?EdgeInsetsProp,
   releaseVelocity?: ?number,
   releaseBounciness?: ?number,
@@ -69,14 +69,14 @@ const TouchableBounce = ((createReactClass({
      * reactivated! Move it back and forth several times while the scroll view
      * is disabled. Ensure you pass in a constant to reduce memory allocations.
      */
-    pressRetentionOffset: EdgeInsetsPropType,
+    pressRetentionOffset: DeprecatedEdgeInsetsPropType,
     releaseVelocity: PropTypes.number.isRequired,
     releaseBounciness: PropTypes.number.isRequired,
     /**
      * Style to apply to the container/underlay. Most commonly used to make sure
      * rounded corners match the wrapped component.
      */
-    style: ViewPropTypes.style,
+    style: DeprecatedViewPropTypes.style,
   },
 
   getDefaultProps: function() {
@@ -94,7 +94,7 @@ const TouchableBounce = ((createReactClass({
     value: number,
     velocity: number,
     bounciness: number,
-    callback?: ?Function,
+    callback?: ?() => void,
   ) {
     Animated.spring(this.state.scale, {
       toValue: value,
@@ -104,21 +104,28 @@ const TouchableBounce = ((createReactClass({
     }).start(callback);
   },
 
+  /**
+   * Triggers a bounce animation without invoking any callbacks.
+   */
+  bounce: function() {
+    this.bounceTo(0.93, 0.1, 0, () => this.bounceTo(1, 0.4, 0));
+  },
+
   /**
    * `Touchable.Mixin` self callbacks. The mixin will invoke these if they are
    * defined on your component.
    */
-  touchableHandleActivePressIn: function(e: Event) {
+  touchableHandleActivePressIn: function(e: PressEvent) {
     this.bounceTo(0.93, 0.1, 0);
     this.props.onPressIn && this.props.onPressIn(e);
   },
 
-  touchableHandleActivePressOut: function(e: Event) {
+  touchableHandleActivePressOut: function(e: PressEvent) {
     this.bounceTo(1, 0.4, 0);
     this.props.onPressOut && this.props.onPressOut(e);
   },
 
-  touchableHandlePress: function(e: Event) {
+  touchableHandlePress: function(e: PressEvent) {
     const onPressWithCompletion = this.props.onPressWithCompletion;
     if (onPressWithCompletion) {
       onPressWithCompletion(() => {
@@ -146,7 +153,7 @@ const TouchableBounce = ((createReactClass({
     return this.props.pressRetentionOffset || PRESS_RETENTION_OFFSET;
   },
 
-  touchableGetHitSlop: function(): ?Object {
+  touchableGetHitSlop: function(): ?EdgeInsetsProp {
     return this.props.hitSlop;
   },
 
diff --git a/Libraries/Components/Touchable/TouchableHighlight.js b/Libraries/Components/Touchable/TouchableHighlight.js
index 996fd4be6b568f..b414c98d0d60c4 100644
--- a/Libraries/Components/Touchable/TouchableHighlight.js
+++ b/Libraries/Components/Touchable/TouchableHighlight.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,25 +9,26 @@
  */
 'use strict';
 
-const ColorPropType = require('ColorPropType');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
 const NativeMethodsMixin = require('NativeMethodsMixin');
-const PropTypes = require('prop-types');
 const Platform = require('Platform');
+const PropTypes = require('prop-types');
 const React = require('React');
 const ReactNativeViewAttributes = require('ReactNativeViewAttributes');
 const StyleSheet = require('StyleSheet');
 const Touchable = require('Touchable');
 const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
 
 const createReactClass = require('create-react-class');
 const ensurePositiveDelayProps = require('ensurePositiveDelayProps');
 
 import type {PressEvent} from 'CoreEventTypes';
-import type {Props as TouchableWithoutFeedbackProps} from 'TouchableWithoutFeedback';
 import type {ViewStyleProp} from 'StyleSheet';
 import type {ColorValue} from 'StyleSheetTypes';
+import type {Props as TouchableWithoutFeedbackProps} from 'TouchableWithoutFeedback';
+import type {TVParallaxPropertiesType} from 'TVViewPropTypes';
 
 const DEFAULT_PROPS = {
   activeOpacity: 0.85,
@@ -39,7 +40,7 @@ const PRESS_RETENTION_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
 
 type IOSProps = $ReadOnly<{|
   hasTVPreferredFocus?: ?boolean,
-  tvParallaxProperties?: ?Object,
+  tvParallaxProperties?: ?TVParallaxPropertiesType,
 |}>;
 
 type Props = $ReadOnly<{|
@@ -49,8 +50,8 @@ type Props = $ReadOnly<{|
   activeOpacity?: ?number,
   underlayColor?: ?ColorValue,
   style?: ?ViewStyleProp,
-  onShowUnderlay?: ?Function,
-  onHideUnderlay?: ?Function,
+  onShowUnderlay?: ?() => void,
+  onHideUnderlay?: ?() => void,
   testOnly_pressed?: ?boolean,
 |}>;
 
@@ -164,12 +165,12 @@ const TouchableHighlight = ((createReactClass({
      * The color of the underlay that will show through when the touch is
      * active.
      */
-    underlayColor: ColorPropType,
+    underlayColor: DeprecatedColorPropType,
     /**
      * Style to apply to the container/underlay. Most commonly used to make sure
      * rounded corners match the wrapped component.
      */
-    style: ViewPropTypes.style,
+    style: DeprecatedViewPropTypes.style,
     /**
      * Called immediately after the underlay is shown
      */
@@ -185,18 +186,7 @@ const TouchableHighlight = ((createReactClass({
      */
     hasTVPreferredFocus: PropTypes.bool,
     /**
-     * *(Apple TV only)* Object with properties to control Apple TV parallax effects.
-     *
-     * enabled: If true, parallax effects are enabled.  Defaults to true.
-     * shiftDistanceX: Defaults to 2.0.
-     * shiftDistanceY: Defaults to 2.0.
-     * tiltAngle: Defaults to 0.05.
-     * magnification: Defaults to 1.0.
-     * pressMagnification: Defaults to 1.0.
-     * pressDuration: Defaults to 0.3.
-     * pressDelay: Defaults to 0.0.
-     *
-     * @platform ios
+     * Apple TV parallax effects
      */
     tvParallaxProperties: PropTypes.object,
     /**
diff --git a/Libraries/Components/Touchable/TouchableNativeFeedback.android.js b/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
index ff149a7688c8f8..8365c809d6d1de 100644
--- a/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
+++ b/Libraries/Components/Touchable/TouchableNativeFeedback.android.js
@@ -1,9 +1,10 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow strict-local
  * @format
  */
 
@@ -22,6 +23,8 @@ const createReactClass = require('create-react-class');
 const ensurePositiveDelayProps = require('ensurePositiveDelayProps');
 const processColor = require('processColor');
 
+import type {PressEvent} from 'CoreEventTypes';
+
 const rippleBackgroundPropType = PropTypes.shape({
   type: PropTypes.oneOf(['RippleAndroid']),
   color: PropTypes.number,
@@ -38,8 +41,6 @@ const backgroundPropType = PropTypes.oneOfType([
   themeAttributeBackgroundPropType,
 ]);
 
-type Event = Object;
-
 const PRESS_RETENTION_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
 
 /**
@@ -167,7 +168,7 @@ const TouchableNativeFeedback = createReactClass({
    * `Touchable.Mixin` self callbacks. The mixin will invoke these if they are
    * defined on your component.
    */
-  touchableHandleActivePressIn: function(e: Event) {
+  touchableHandleActivePressIn: function(e: PressEvent) {
     this.props.onPressIn && this.props.onPressIn(e);
     this._dispatchPressedStateChange(true);
     if (this.pressInLocation) {
@@ -178,16 +179,16 @@ const TouchableNativeFeedback = createReactClass({
     }
   },
 
-  touchableHandleActivePressOut: function(e: Event) {
+  touchableHandleActivePressOut: function(e: PressEvent) {
     this.props.onPressOut && this.props.onPressOut(e);
     this._dispatchPressedStateChange(false);
   },
 
-  touchableHandlePress: function(e: Event) {
+  touchableHandlePress: function(e: PressEvent) {
     this.props.onPress && this.props.onPress(e);
   },
 
-  touchableHandleLongPress: function(e: Event) {
+  touchableHandleLongPress: function(e: PressEvent) {
     this.props.onLongPress && this.props.onLongPress(e);
   },
 
@@ -223,7 +224,7 @@ const TouchableNativeFeedback = createReactClass({
   _dispatchHotspotUpdate: function(destX, destY) {
     UIManager.dispatchViewManagerCommand(
       ReactNative.findNodeHandle(this),
-      UIManager.RCTView.Commands.hotspotUpdate,
+      UIManager.getViewManagerConfig('RCTView').Commands.hotspotUpdate,
       [destX || 0, destY || 0],
     );
   },
@@ -231,7 +232,7 @@ const TouchableNativeFeedback = createReactClass({
   _dispatchPressedStateChange: function(pressed) {
     UIManager.dispatchViewManagerCommand(
       ReactNative.findNodeHandle(this),
-      UIManager.RCTView.Commands.setPressed,
+      UIManager.getViewManagerConfig('RCTView').Commands.setPressed,
       [pressed],
     );
   },
diff --git a/Libraries/Components/Touchable/TouchableNativeFeedback.js b/Libraries/Components/Touchable/TouchableNativeFeedback.js
index 3eaf44a287463f..9495ca266615f6 100644
--- a/Libraries/Components/Touchable/TouchableNativeFeedback.js
+++ b/Libraries/Components/Touchable/TouchableNativeFeedback.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/TouchableOpacity.js b/Libraries/Components/Touchable/TouchableOpacity.js
index 49eb1304f1eebb..257131a01eaa9c 100644
--- a/Libraries/Components/Touchable/TouchableOpacity.js
+++ b/Libraries/Components/Touchable/TouchableOpacity.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,7 +15,6 @@ const Easing = require('Easing');
 const NativeMethodsMixin = require('NativeMethodsMixin');
 const React = require('React');
 const PropTypes = require('prop-types');
-const TimerMixin = require('react-timer-mixin');
 const Touchable = require('Touchable');
 const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
 
@@ -25,14 +24,14 @@ const flattenStyle = require('flattenStyle');
 
 import type {Props as TouchableWithoutFeedbackProps} from 'TouchableWithoutFeedback';
 import type {ViewStyleProp} from 'StyleSheet';
-
-type Event = Object;
+import type {TVParallaxPropertiesType} from 'TVViewPropTypes';
+import type {PressEvent} from 'CoreEventTypes';
 
 const PRESS_RETENTION_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
 
 type TVProps = $ReadOnly<{|
   hasTVPreferredFocus?: ?boolean,
-  tvParallaxProperties?: ?Object,
+  tvParallaxProperties?: ?TVParallaxPropertiesType,
 |}>;
 
 type Props = $ReadOnly<{|
@@ -132,7 +131,7 @@ type Props = $ReadOnly<{|
  */
 const TouchableOpacity = ((createReactClass({
   displayName: 'TouchableOpacity',
-  mixins: [TimerMixin, Touchable.Mixin, NativeMethodsMixin],
+  mixins: [Touchable.Mixin, NativeMethodsMixin],
 
   propTypes: {
     ...TouchableWithoutFeedback.propTypes,
@@ -194,7 +193,7 @@ const TouchableOpacity = ((createReactClass({
    * `Touchable.Mixin` self callbacks. The mixin will invoke these if they are
    * defined on your component.
    */
-  touchableHandleActivePressIn: function(e: Event) {
+  touchableHandleActivePressIn: function(e: PressEvent) {
     if (e.dispatchConfig.registrationName === 'onResponderGrant') {
       this._opacityActive(0);
     } else {
@@ -203,16 +202,16 @@ const TouchableOpacity = ((createReactClass({
     this.props.onPressIn && this.props.onPressIn(e);
   },
 
-  touchableHandleActivePressOut: function(e: Event) {
+  touchableHandleActivePressOut: function(e: PressEvent) {
     this._opacityInactive(250);
     this.props.onPressOut && this.props.onPressOut(e);
   },
 
-  touchableHandlePress: function(e: Event) {
+  touchableHandlePress: function(e: PressEvent) {
     this.props.onPress && this.props.onPress(e);
   },
 
-  touchableHandleLongPress: function(e: Event) {
+  touchableHandleLongPress: function(e: PressEvent) {
     this.props.onLongPress && this.props.onLongPress(e);
   },
 
@@ -248,7 +247,7 @@ const TouchableOpacity = ((createReactClass({
 
   _getChildStyleOpacityWithDefault: function() {
     const childStyle = flattenStyle(this.props.style) || {};
-    return childStyle.opacity == undefined ? 1 : childStyle.opacity;
+    return childStyle.opacity == null ? 1 : childStyle.opacity;
   },
 
   render: function() {
diff --git a/Libraries/Components/Touchable/TouchableWithoutFeedback.js b/Libraries/Components/Touchable/TouchableWithoutFeedback.js
index 51c727fc6d4093..ab09819d3acddc 100755
--- a/Libraries/Components/Touchable/TouchableWithoutFeedback.js
+++ b/Libraries/Components/Touchable/TouchableWithoutFeedback.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,31 +10,29 @@
 
 'use strict';
 
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
 const React = require('React');
 const PropTypes = require('prop-types');
-const TimerMixin = require('react-timer-mixin');
 const Touchable = require('Touchable');
 const View = require('View');
 
 const createReactClass = require('create-react-class');
 const ensurePositiveDelayProps = require('ensurePositiveDelayProps');
-const warning = require('fbjs/lib/warning');
 
 const {
-  AccessibilityComponentTypes,
-  AccessibilityRoles,
-  AccessibilityStates,
-  AccessibilityTraits,
-} = require('ViewAccessibility');
+  DeprecatedAccessibilityComponentTypes,
+  DeprecatedAccessibilityRoles,
+  DeprecatedAccessibilityStates,
+  DeprecatedAccessibilityTraits,
+} = require('DeprecatedViewAccessibility');
 
 import type {PressEvent} from 'CoreEventTypes';
 import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
 import type {
   AccessibilityComponentType,
   AccessibilityRole,
-  AccessibilityStates as AccessibilityStatesFlow,
-  AccessibilityTraits as AccessibilityTraitsFlow,
+  AccessibilityStates,
+  AccessibilityTraits,
 } from 'ViewAccessibility';
 
 // [TODO(macOS ISS#2323203)
@@ -53,10 +51,11 @@ export type Props = $ReadOnly<{|
     | string
     | Array<any>
     | any,
-  accessibilityHint?: string,
+  accessibilityHint?: ?Stringish,
+  accessibilityIgnoresInvertColors?: ?boolean,
   accessibilityRole?: ?AccessibilityRole,
-  accessibilityStates?: ?AccessibilityStatesFlow,
-  accessibilityTraits?: ?AccessibilityTraitsFlow,
+  accessibilityStates?: ?AccessibilityStates,
+  accessibilityTraits?: ?AccessibilityTraits,
   children?: ?React.Node,
   delayLongPress?: ?number,
   delayPressIn?: ?number,
@@ -64,6 +63,8 @@ export type Props = $ReadOnly<{|
   disabled?: ?boolean,
   hitSlop?: ?EdgeInsetsProp,
   nativeID?: ?string,
+  onBlur?: ?Function,
+  onFocus?: ?Function,
   onLayout?: ?Function,
   onLongPress?: ?Function,
   onPress?: ?Function,
@@ -93,20 +94,22 @@ export type Props = $ReadOnly<{|
  */
 const TouchableWithoutFeedback = ((createReactClass({
   displayName: 'TouchableWithoutFeedback',
-  mixins: [TimerMixin, Touchable.Mixin],
+  mixins: [Touchable.Mixin],
 
   propTypes: {
     accessible: PropTypes.bool,
     accessibilityLabel: PropTypes.node,
     accessibilityHint: PropTypes.string,
-    accessibilityComponentType: PropTypes.oneOf(AccessibilityComponentTypes),
-    accessibilityRole: PropTypes.oneOf(AccessibilityRoles),
+    accessibilityComponentType: PropTypes.oneOf(
+      DeprecatedAccessibilityComponentTypes,
+    ),
+    accessibilityRole: PropTypes.oneOf(DeprecatedAccessibilityRoles),
     accessibilityStates: PropTypes.arrayOf(
-      PropTypes.oneOf(AccessibilityStates),
+      PropTypes.oneOf(DeprecatedAccessibilityStates),
     ),
     accessibilityTraits: PropTypes.oneOfType([
-      PropTypes.oneOf(AccessibilityTraits),
-      PropTypes.arrayOf(PropTypes.oneOf(AccessibilityTraits)),
+      PropTypes.oneOf(DeprecatedAccessibilityTraits),
+      PropTypes.arrayOf(PropTypes.oneOf(DeprecatedAccessibilityTraits)),
     ]),
     onAccessibilityTap: PropTypes.func, // TODO(OSS Candidate ISS#2710739)
     tabIndex: PropTypes.number, // TODO(macOS/win ISS#2323203)
@@ -206,7 +209,7 @@ const TouchableWithoutFeedback = ((createReactClass({
      * reactivated! Move it back and forth several times while the scroll view
      * is disabled. Ensure you pass in a constant to reduce memory allocations.
      */
-    pressRetentionOffset: EdgeInsetsPropType,
+    pressRetentionOffset: DeprecatedEdgeInsetsPropType,
     /**
      * This defines how far your touch can start away from the button. This is
      * added to `pressRetentionOffset` when moving off of the button.
@@ -215,7 +218,7 @@ const TouchableWithoutFeedback = ((createReactClass({
      * of sibling views always takes precedence if a touch hits two overlapping
      * views.
      */
-    hitSlop: EdgeInsetsPropType,
+    hitSlop: DeprecatedEdgeInsetsPropType,
   },
 
   getInitialState: function() {
@@ -316,10 +319,10 @@ const TouchableWithoutFeedback = ((createReactClass({
         this.props.clickable !== false && this.props.onPress !== undefined, // TODO(android ISS)
       onClick: this.touchableHandlePress, // TODO(android ISS)
       onMouseEnter: this.props.onMouseEnter, // [TODO(macOS ISS#2323203)
-      onMouseLeave: this.props.onMouseLeave,
-      onDragEnter: this.props.onDragEnter,
-      onDragLeave: this.props.onDragLeave,
-      onDrop: this.props.onDrop,
+      onMouseLeave: this.props.onMouseLeave, // [TODO(macOS ISS#2323203)
+      onDragEnter: this.props.onDragEnter, // [TODO(macOS ISS#2323203)
+      onDragLeave: this.props.onDragLeave, // [TODO(macOS ISS#2323203)
+      onDrop: this.props.onDrop, // [TODO(macOS ISS#2323203)
       draggedTypes: this.props.draggedTypes, // ]TODO(macOS ISS#2323203)
       children,
     });
diff --git a/Libraries/Components/Touchable/__mocks__/ensureComponentIsNative.js b/Libraries/Components/Touchable/__mocks__/ensureComponentIsNative.js
index f152b68bba74a4..234c178afddd94 100644
--- a/Libraries/Components/Touchable/__mocks__/ensureComponentIsNative.js
+++ b/Libraries/Components/Touchable/__mocks__/ensureComponentIsNative.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/__tests__/TouchableHighlight-test.js b/Libraries/Components/Touchable/__tests__/TouchableHighlight-test.js
index f40cc0b7ad1be9..8f299d8a360103 100644
--- a/Libraries/Components/Touchable/__tests__/TouchableHighlight-test.js
+++ b/Libraries/Components/Touchable/__tests__/TouchableHighlight-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/ensureComponentIsNative.js b/Libraries/Components/Touchable/ensureComponentIsNative.js
index 5ce5a39d9baaf0..911a8ffbb67bcb 100644
--- a/Libraries/Components/Touchable/ensureComponentIsNative.js
+++ b/Libraries/Components/Touchable/ensureComponentIsNative.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/Touchable/ensurePositiveDelayProps.js b/Libraries/Components/Touchable/ensurePositiveDelayProps.js
index 01c001ad4b6a7e..f4f23aec035641 100644
--- a/Libraries/Components/Touchable/ensurePositiveDelayProps.js
+++ b/Libraries/Components/Touchable/ensurePositiveDelayProps.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/UnimplementedViews/UnimplementedView.js b/Libraries/Components/UnimplementedViews/UnimplementedView.js
index ec21fde54492b2..30e64eb83d01fd 100644
--- a/Libraries/Components/UnimplementedViews/UnimplementedView.js
+++ b/Libraries/Components/UnimplementedViews/UnimplementedView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/SafeAreaView/SafeAreaView.android.js b/Libraries/Components/View/PlatformViewPropTypes.android.js
similarity index 56%
rename from Libraries/Components/SafeAreaView/SafeAreaView.android.js
rename to Libraries/Components/View/PlatformViewPropTypes.android.js
index a581258a57832f..f96fe3a62d8149 100644
--- a/Libraries/Components/SafeAreaView/SafeAreaView.android.js
+++ b/Libraries/Components/View/PlatformViewPropTypes.android.js
@@ -1,13 +1,14 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @providesModule PlatformViewPropTypes
  * @format
  * @flow
  */
 
 'use strict';
 
-module.exports = require('View');
+export type PlatformViewPropTypes = {};
diff --git a/Libraries/Components/View/PlatformViewPropTypes.ios.js b/Libraries/Components/View/PlatformViewPropTypes.ios.js
new file mode 100644
index 00000000000000..fc842750601026
--- /dev/null
+++ b/Libraries/Components/View/PlatformViewPropTypes.ios.js
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule PlatformViewPropTypes
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+import type {TVViewProps} from 'TVViewPropTypes';
+
+export type PlatformViewPropTypes = TVViewProps;
diff --git a/Libraries/Components/View/ReactNativeStyleAttributes.js b/Libraries/Components/View/ReactNativeStyleAttributes.js
index 7a75dda8b7f41b..240e6a4f0a4e4a 100644
--- a/Libraries/Components/View/ReactNativeStyleAttributes.js
+++ b/Libraries/Components/View/ReactNativeStyleAttributes.js
@@ -1,32 +1,32 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @format
+ * @format strict-local
  * @flow
  */
 
 'use strict';
 
-const ImageStylePropTypes = require('ImageStylePropTypes');
+const DeprecatedImageStylePropTypes = require('DeprecatedImageStylePropTypes');
 const TextStylePropTypes = require('TextStylePropTypes');
-const ViewStylePropTypes = require('ViewStylePropTypes');
+const DeprecatedViewStylePropTypes = require('DeprecatedViewStylePropTypes');
 
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const keyMirror = require('fbjs/lib/keyMirror');
 const processColor = require('processColor');
 const processTransform = require('processTransform');
 const sizesDiffer = require('sizesDiffer');
 
-const ReactNativeStyleAttributes = {
-  ...keyMirror(ViewStylePropTypes),
-  ...keyMirror(TextStylePropTypes),
-  ...keyMirror(ImageStylePropTypes),
-};
+const ReactNativeStyleAttributes = {};
+
+for (const attributeName of Object.keys({
+  ...DeprecatedViewStylePropTypes,
+  ...TextStylePropTypes,
+  ...DeprecatedImageStylePropTypes,
+})) {
+  ReactNativeStyleAttributes[attributeName] = true;
+}
 
 ReactNativeStyleAttributes.transform = {process: processTransform};
 ReactNativeStyleAttributes.shadowOffset = {diff: sizesDiffer};
diff --git a/Libraries/Components/View/ReactNativeViewAttributes.js b/Libraries/Components/View/ReactNativeViewAttributes.js
index fba37a2c4d6038..138abab5780108 100644
--- a/Libraries/Components/View/ReactNativeViewAttributes.js
+++ b/Libraries/Components/View/ReactNativeViewAttributes.js
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow strict-local
  * @format
- * @flow strict
  */
 
 'use strict';
diff --git a/Libraries/Components/View/ShadowPropTypesIOS.js b/Libraries/Components/View/ShadowPropTypesIOS.js
deleted file mode 100644
index 2dfc021735ad9e..00000000000000
--- a/Libraries/Components/View/ShadowPropTypesIOS.js
+++ /dev/null
@@ -1,50 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
-'use strict';
-
-const ColorPropType = require('ColorPropType');
-const ReactPropTypes = require('prop-types');
-
-/**
- * These props can be used to dynamically generate shadows on views, images, text, etc.
- *
- * Because they are dynamically generated, they may cause performance regressions. Static
- * shadow image asset may be a better way to go for optimal performance.
- *
- * These properties are iOS only - for similar functionality on Android, use the [`elevation`
- * property](docs/viewstyleproptypes.html#elevation).
- */
-const ShadowPropTypesIOS = {
-  /**
-   * Sets the drop shadow color
-   * @platform ios
-   */
-  shadowColor: ColorPropType,
-  /**
-   * Sets the drop shadow offset
-   * @platform ios
-   */
-  shadowOffset: ReactPropTypes.shape({
-    width: ReactPropTypes.number,
-    height: ReactPropTypes.number,
-  }),
-  /**
-   * Sets the drop shadow opacity (multiplied by the color's alpha component)
-   * @platform ios
-   */
-  shadowOpacity: ReactPropTypes.number,
-  /**
-   * Sets the drop shadow blur radius
-   * @platform ios
-   */
-  shadowRadius: ReactPropTypes.number,
-};
-
-module.exports = ShadowPropTypesIOS;
diff --git a/Libraries/Components/View/View.js b/Libraries/Components/View/View.js
index 0ec2fda48fc79c..0c4cca3271eaa0 100644
--- a/Libraries/Components/View/View.js
+++ b/Libraries/Components/View/View.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -30,24 +30,27 @@ export type Props = ViewProps;
 
 let ViewToExport = ViewNativeComponent;
 if (__DEV__) {
-  const View = (
-    props: Props,
-    forwardedRef: React.Ref<typeof ViewNativeComponent>,
-  ) => {
-    return (
-      <TextAncestor.Consumer>
-        {hasTextAncestor => {
-          invariant(
-            !hasTextAncestor,
-            'Nesting of <View> within <Text> is not currently supported.',
-          );
-          return <ViewNativeComponent {...props} ref={forwardedRef} />;
-        }}
-      </TextAncestor.Consumer>
-    );
-  };
-  // $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
-  ViewToExport = React.forwardRef(View);
+  if (!global.__RCTProfileIsProfiling) {
+    const View = (
+      props: Props,
+      forwardedRef: React.Ref<typeof ViewNativeComponent>,
+    ) => {
+      return (
+        <TextAncestor.Consumer>
+          {hasTextAncestor => {
+            invariant(
+              !hasTextAncestor,
+              'Nesting of <View> within <Text> is not currently supported.',
+            );
+            return <ViewNativeComponent {...props} ref={forwardedRef} />;
+          }}
+        </TextAncestor.Consumer>
+      );
+    };
+    // $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+    ViewToExport = React.forwardRef(View);
+    ViewToExport.displayName = 'View';
+  }
 }
 
 module.exports = ((ViewToExport: $FlowFixMe): typeof ViewNativeComponent);
diff --git a/Libraries/Components/View/ViewAccessibility.js b/Libraries/Components/View/ViewAccessibility.js
index 01a93d6ee2068a..28b4804374e05a 100644
--- a/Libraries/Components/View/ViewAccessibility.js
+++ b/Libraries/Components/View/ViewAccessibility.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -46,6 +46,7 @@ export type AccessibilityNodeInfoProp = {
   clickable: boolean,
 }; // ]TODO(android ISS)
 
+// This must be kept in sync with the AccessibilityRolesMask in RCTViewManager.m
 export type AccessibilityRole =
   | 'none'
   | 'button'
diff --git a/Libraries/Components/View/ViewNativeComponent.js b/Libraries/Components/View/ViewNativeComponent.js
index 67e55637944074..432040ad3c3a4c 100644
--- a/Libraries/Components/View/ViewNativeComponent.js
+++ b/Libraries/Components/View/ViewNativeComponent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/View/ViewPropTypes.js b/Libraries/Components/View/ViewPropTypes.js
index a6a7ea133a6fea..7997a78ecea705 100644
--- a/Libraries/Components/View/ViewPropTypes.js
+++ b/Libraries/Components/View/ViewPropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,30 +10,18 @@
 
 'use strict';
 
-const React = require('React');
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
-const PlatformViewPropTypes = require('PlatformViewPropTypes');
-const PropTypes = require('prop-types');
-const StyleSheetPropType = require('StyleSheetPropType');
-const ViewStylePropTypes = require('ViewStylePropTypes');
-
-const {
-  AccessibilityComponentTypes,
-  AccessibilityTraits,
-  AccessibilityRoles,
-  AccessibilityStates,
-} = require('ViewAccessibility');
-
+import type {Layout, LayoutEvent} from 'CoreEventTypes';
+import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
+import type React from 'React';
+import type {ViewStyleProp} from 'StyleSheet';
+import type {TVViewProps} from 'TVViewPropTypes';
 import type {
   AccessibilityComponentType,
   AccessibilityTrait,
   AccessibilityNodeInfoProp, // TODO(android ISS)
   AccessibilityRole,
-  AccessibilityState,
+  AccessibilityStates,
 } from 'ViewAccessibility';
-import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
-import type {TVViewProps} from 'TVViewPropTypes';
-import type {Layout, LayoutEvent} from 'CoreEventTypes';
 
 // [TODO(macOS ISS#2323203)
 const {DraggedTypes} = require('DraggedType');
@@ -41,18 +29,60 @@ const {DraggedTypes} = require('DraggedType');
 import type {DraggedType} from 'DraggedType';
 // ]TODO(macOS ISS#2323203)
 
-const stylePropType = StyleSheetPropType(ViewStylePropTypes);
-
 export type ViewLayout = Layout;
 export type ViewLayoutEvent = LayoutEvent;
 
 type DirectEventProps = $ReadOnly<{|
-  onAccessibilityAction?: Function,
-  onAccessibilityTap?: Function,
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs an accessibility custom action.
+   *
+   * @platform ios
+   */
+  onAccessibilityAction?: ?Function,
+
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs accessibility tap gesture.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onaccessibilitytap
+   */
+  onAccessibilityTap?: ?Function,
+
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs accessibility double click gesture.
+   */
   onDoubleClick?: ?Function, // TODO(macOS ISS#2323203)
+
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs accessibility key down gesture.
+   */
   onKeyDown?: ?Function, // TODO(macOS ISS#2323203)
-  onLayout?: ?(event: LayoutEvent) => void,
-  onMagicTap?: Function,
+
+  onMouseEnter?: Function, // [TODO(macOS ISS#2323203)
+
+  /**
+   * Invoked on mount and layout changes with:
+   *
+   * `{nativeEvent: { layout: {x, y, width, height}}}`
+   *
+   * This event is fired immediately once the layout has been calculated, but
+   * the new layout may not yet be reflected on the screen at the time the
+   * event is received, especially if a layout animation is in progress.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onlayout
+   */
+  onLayout?: ?(event: LayoutEvent) => mixed,
+
+  /**
+   * When `accessible` is `true`, the system will invoke this function when the
+   * user performs the magic tap gesture.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onmagictap
+   */
+  onMagicTap?: ?Function,
 |}>;
 
 type TouchEventProps = $ReadOnly<{|
@@ -66,17 +96,121 @@ type TouchEventProps = $ReadOnly<{|
   onTouchStartCapture?: ?Function,
 |}>;
 
+/**
+ * For most touch interactions, you'll simply want to wrap your component in
+ * `TouchableHighlight` or `TouchableOpacity`. Check out `Touchable.js`,
+ * `ScrollResponder.js` and `ResponderEventPlugin.js` for more discussion.
+ */
 type GestureResponderEventProps = $ReadOnly<{|
+  /**
+   * Does this view want to "claim" touch responsiveness? This is called for
+   * every touch move on the `View` when it is not the responder.
+   *
+   * `View.props.onMoveShouldSetResponder: (event) => [true | false]`, where
+   * `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onmoveshouldsetresponder
+   */
   onMoveShouldSetResponder?: ?Function,
+
+  /**
+   * If a parent `View` wants to prevent a child `View` from becoming responder
+   * on a move, it should have this handler which returns `true`.
+   *
+   * `View.props.onMoveShouldSetResponderCapture: (event) => [true | false]`,
+   * where `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onMoveShouldsetrespondercapture
+   */
   onMoveShouldSetResponderCapture?: ?Function,
+
+  /**
+   * The View is now responding for touch events. This is the time to highlight
+   * and show the user what is happening.
+   *
+   * `View.props.onResponderGrant: (event) => {}`, where `event` is a synthetic
+   * touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onrespondergrant
+   */
   onResponderGrant?: ?Function,
+
+  /**
+   * The user is moving their finger.
+   *
+   * `View.props.onResponderMove: (event) => {}`, where `event` is a synthetic
+   * touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onrespondermove
+   */
   onResponderMove?: ?Function,
+
+  /**
+   * Another responder is already active and will not release it to that `View`
+   * asking to be the responder.
+   *
+   * `View.props.onResponderReject: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderreject
+   */
   onResponderReject?: ?Function,
+
+  /**
+   * Fired at the end of the touch.
+   *
+   * `View.props.onResponderRelease: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderrelease
+   */
   onResponderRelease?: ?Function,
+
   onResponderStart?: ?Function,
+
+  /**
+   * The responder has been taken from the `View`. Might be taken by other
+   * views after a call to `onResponderTerminationRequest`, or might be taken
+   * by the OS without asking (e.g., happens with control center/ notification
+   * center on iOS)
+   *
+   * `View.props.onResponderTerminate: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminate
+   */
   onResponderTerminate?: ?Function,
+
+  /**
+   * Some other `View` wants to become responder and is asking this `View` to
+   * release its responder. Returning `true` allows its release.
+   *
+   * `View.props.onResponderTerminationRequest: (event) => {}`, where `event`
+   * is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminationrequest
+   */
   onResponderTerminationRequest?: ?Function,
+
+  /**
+   * Does this view want to become responder on the start of a touch?
+   *
+   * `View.props.onStartShouldSetResponder: (event) => [true | false]`, where
+   * `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetresponder
+   */
   onStartShouldSetResponder?: ?Function,
+
+  /**
+   * If a parent `View` wants to prevent a child `View` from becoming responder
+   * on a touch start, it should have this handler which returns `true`.
+   *
+   * `View.props.onStartShouldSetResponderCapture: (event) => [true | false]`,
+   * where `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetrespondercapture
+   */
   onStartShouldSetResponderCapture?: ?Function,
 |}>;
 
@@ -84,119 +218,54 @@ type AndroidViewProps = $ReadOnly<{|
   nativeBackgroundAndroid?: ?Object,
   nativeForegroundAndroid?: ?Object,
 
-  /* Deprecated transform prop. Use the transform style prop instead */
-  rotation?: empty,
-  /* Deprecated transform prop. Use the transform style prop instead */
-  scaleX?: empty,
-  /* Deprecated transform prop. Use the transform style prop instead */
-  scaleY?: empty,
-  /* Deprecated transform prop. Use the transform style prop instead */
-  translateX?: empty,
-  /* Deprecated transform prop. Use the transform style prop instead */
-  translateY?: empty,
-|}>;
-
-export type ViewProps = $ReadOnly<{|
-  ...DirectEventProps,
-  ...GestureResponderEventProps,
-  ...TouchEventProps,
-  ...AndroidViewProps,
-
-  // There's no easy way to create a different type if (Platform.isTV):
-  // so we must include TVViewProps
-  ...TVViewProps,
-
-  accessible?: boolean,
-  accessibilityLabel?:
-    | null
-    | React$PropType$Primitive<any>
-    | string
-    | Array<any>
-    | any,
-  accessibilityHint?: string,
-  accessibilityActions?: Array<string>,
-  accessibilityComponentType?: AccessibilityComponentType,
-  accessibilityLiveRegion?: 'none' | 'polite' | 'assertive',
-  importantForAccessibility?: 'auto' | 'yes' | 'no' | 'no-hide-descendants',
-  accessibilityIgnoresInvertColors?: boolean,
-  accessibilityTraits?: AccessibilityTrait | Array<AccessibilityTrait>,
-  accessibilityRole?: AccessibilityRole,
-  accessibilityStates?: Array<AccessibilityState>,
-  accessibilityViewIsModal?: boolean,
-  accessibilityElementsHidden?: boolean,
-  children?: ?React.Node,
-  testID?: ?string,
-  nativeID?: string,
-  tabIndex?: number, // TODO(win ISS#2323203)
-  onDoubleClick?: ?Function, // TODO(macOS ISS#2323203)
-  onKeyDown?: ?Function, // TODO(macOS ISS#2323203)
-  hitSlop?: ?EdgeInsetsProp,
-  pointerEvents?: null | 'box-none' | 'none' | 'box-only' | 'auto',
-  style?: stylePropType,
-  removeClippedSubviews?: boolean,
-  renderToHardwareTextureAndroid?: boolean,
-  shouldRasterizeIOS?: boolean,
-  collapsable?: boolean,
-  needsOffscreenAlphaCompositing?: boolean,
-  clickable?: boolean, // [TODO(android ISS)
-  onClick?: Function,
-  onFocusChange?: Function, // ]TODO(android ISS)
-  onMouseEnter?: Function, // [TODO(macOS ISS#2323203)
-  onMouseLeave?: Function,
-  onDragEnter?: Function,
-  onDragLeave?: Function,
-  onDrop?: Function,
-  onFocus?: Function,
-  onBlur?: Function,
-  acceptsKeyboardFocus?: boolean,
-  enableFocusRing?: boolean,
-  tooltip?: string,
-  draggedTypes?: DraggedType | Array<DraggedType>, // ]TODO(macOS ISS#2323203)
-  accessibilityNodeInfo?: AccessibilityNodeInfoProp, // TODO(android ISS)
-|}>;
-
-module.exports = {
   /**
-   * When `true`, indicates that the view is an accessibility element.
-   * By default, all the touchable elements are accessible.
+   * Whether this `View` should render itself (and all of its children) into a
+   * single hardware texture on the GPU.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#accessible
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#rendertohardwaretextureandroid
    */
-  accessible: PropTypes.bool,
+  renderToHardwareTextureAndroid?: ?boolean,
 
   /**
-   * Overrides the text that's read by the screen reader when the user interacts
-   * with the element. By default, the label is constructed by traversing all
-   * the children and accumulating all the `Text` nodes separated by space.
+   * Views that are only used to layout their children or otherwise don't draw
+   * anything may be automatically removed from the native hierarchy as an
+   * optimization. Set this property to `false` to disable this optimization and
+   * ensure that this `View` exists in the native view hierarchy.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#accessibilitylabel
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#collapsable
    */
-  accessibilityLabel: PropTypes.node,
+  collapsable?: ?boolean,
 
   /**
-   * An accessibility hint helps users understand what will happen when they perform
-   * an action on the accessibility element when that result is not obvious from the
-   * accessibility label.
+   * Whether this `View` needs to rendered offscreen and composited with an
+   * alpha in order to preserve 100% correct colors and blending behavior.
    *
+   * @platform android
    *
-   * See http://facebook.github.io/react-native/docs/view.html#accessibilityHint
+   * See http://facebook.github.io/react-native/docs/view.html#needsoffscreenalphacompositing
    */
-  accessibilityHint: PropTypes.string,
+  needsOffscreenAlphaCompositing?: ?boolean,
 
   /**
-   * Provides an array of custom actions available for accessibility.
-   *
-   * @platform ios
+   * When `true`, indicates that the view is clickable. By default,
+   * all the touchable elements are clickable.
+   * 
+   * @platform android
    */
-  accessibilityActions: PropTypes.arrayOf(PropTypes.string),
-
+  clickable?: ?boolean, // TODO(android ISS)
+  
   /**
-   * Prevents view from being inverted if set to true and color inversion is turned on.
-   *
-   * @platform ios
+   * When `clickable` is true, the system will try to invoke this function
+   * when the user performs a click.
+   * 
+   * @platform android
    */
-  accessibilityIgnoresInvertColors: PropTypes.bool,
 
+  onClick?: ?Function, // TODO(android ISS)
   /**
    * Indicates to accessibility services to treat UI component like a
    * native one. Works for Android only.
@@ -205,17 +274,9 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#accessibilitycomponenttype
    */
-  accessibilityComponentType: PropTypes.oneOf(AccessibilityComponentTypes),
 
-  /**
-   * Indicates to accessibility services to treat UI component like a specific role.
-   */
-  accessibilityRole: PropTypes.oneOf(AccessibilityRoles),
+  accessibilityComponentType?: ?AccessibilityComponentType,
 
-  /**
-   * Indicates to accessibility services that UI Component is in a specific State.
-   */
-  accessibilityStates: PropTypes.arrayOf(PropTypes.oneOf(AccessibilityStates)),
   /**
    * Indicates to accessibility services whether the user should be notified
    * when this view changes. Works for Android API >= 19 only.
@@ -224,7 +285,14 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#accessibilityliveregion
    */
-  accessibilityLiveRegion: PropTypes.oneOf(['none', 'polite', 'assertive']),
+  accessibilityLiveRegion?: ?('none' | 'polite' | 'assertive'),
+
+  /**
+   * fired when the view focus changes (gain->lose or lose->gain)
+   * 
+   * @platform android
+   */
+  onFocusChange?: ?Function, // TODO(android ISS)
 
   /**
    * Controls how view is important for accessibility which is if it
@@ -235,12 +303,25 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#importantforaccessibility
    */
-  importantForAccessibility: PropTypes.oneOf([
-    'auto',
-    'yes',
-    'no',
-    'no-hide-descendants',
-  ]),
+  importantForAccessibility?: ?('auto' | 'yes' | 'no' | 'no-hide-descendants'),
+
+  accessibilityNodeInfo?: AccessibilityNodeInfoProp, // TODO(android ISS)
+|}>;
+
+type IOSViewProps = $ReadOnly<{|
+  /**
+   * Provides an array of custom actions available for accessibility.
+   *
+   * @platform ios
+   */
+  accessibilityActions?: ?$ReadOnlyArray<string>,
+
+  /**
+   * Prevents view from being inverted if set to true and color inversion is turned on.
+   *
+   * @platform ios
+   */
+  accessibilityIgnoresInvertColors?: ?boolean,
 
   /**
    * Provides additional traits to screen reader. By default no traits are
@@ -252,10 +333,10 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#accessibilitytraits
    */
-  accessibilityTraits: PropTypes.oneOfType([
-    PropTypes.oneOf(AccessibilityTraits),
-    PropTypes.arrayOf(PropTypes.oneOf(AccessibilityTraits)),
-  ]),
+  accessibilityTraits?: ?(
+    | AccessibilityTrait
+    | $ReadOnlyArray<AccessibilityTrait>
+  ),
 
   /**
    * A value indicating whether VoiceOver should ignore the elements
@@ -266,7 +347,7 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#accessibilityviewismodal
    */
-  accessibilityViewIsModal: PropTypes.bool,
+  accessibilityViewIsModal?: ?boolean,
 
   /**
    * A value indicating whether the accessibility elements contained within
@@ -276,17 +357,16 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#accessibilityElementsHidden
    */
-  accessibilityElementsHidden: PropTypes.bool,
+  accessibilityElementsHidden?: ?boolean,
 
   /**
-   * When `accessible` is true, the system will try to invoke this function
-   * when the user performs an accessibility custom action.
+   * Whether this `View` should be rendered as a bitmap before compositing.
    *
    * @platform ios
    */
-  onAccessibilityAction: PropTypes.func,
+  onAccessibilityAction?: ?Function,
 
-  onDoubleClick: PropTypes.func, // TODO(macOS ISS#2323203)
+  onDoubleClick?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * When `accessible` is true, the system will try to invoke this function
@@ -294,150 +374,87 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#onaccessibilitytap
    */
-  onAccessibilityTap: PropTypes.func,
+  onAccessibilityTap?: ?Function,
 
   /**
    * When `accessible` is `true`, the system will invoke this function when the
    * user performs the magic tap gesture.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onmagictap
-   */
-  onMagicTap: PropTypes.func,
-
-  /**
-   * Used to locate this view in end-to-end tests.
-   *
-   * > This disables the 'layout-only view removal' optimization for this view!
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#testid
-   */
-  testID: PropTypes.string,
-
-  /**
-   * Used to locate this view from native classes.
-   *
-   * > This disables the 'layout-only view removal' optimization for this view!
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#nativeid
+   * See http://facebook.github.io/react-native/docs/view.html#shouldrasterizeios
    */
-  nativeID: PropTypes.string,
-
-  tabIndex: PropTypes.number, // TODO(win ISS#2323203)
+  shouldRasterizeIOS?: ?boolean,
+|}>;
 
-  /**
-   * For most touch interactions, you'll simply want to wrap your component in
-   * `TouchableHighlight` or `TouchableOpacity`. Check out `Touchable.js`,
-   * `ScrollResponder.js` and `ResponderEventPlugin.js` for more discussion.
-   */
+export type ViewProps = $ReadOnly<{|
+  ...DirectEventProps,
+  ...GestureResponderEventProps,
+  ...TouchEventProps,
+  ...AndroidViewProps,
+  ...IOSViewProps,
 
-  /**
-   * The View is now responding for touch events. This is the time to highlight
-   * and show the user what is happening.
-   *
-   * `View.props.onResponderGrant: (event) => {}`, where `event` is a synthetic
-   * touch event as described above.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onrespondergrant
-   */
-  onResponderGrant: PropTypes.func,
+  // There's no easy way to create a different type if (Platform.isTV):
+  // so we must include TVViewProps
+  ...TVViewProps,
 
-  /**
-   * The user is moving their finger.
-   *
-   * `View.props.onResponderMove: (event) => {}`, where `event` is a synthetic
-   * touch event as described above.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onrespondermove
-   */
-  onResponderMove: PropTypes.func,
+  children?: React.Node,
+  style?: ?ViewStyleProp,
 
   /**
-   * Another responder is already active and will not release it to that `View`
-   * asking to be the responder.
-   *
-   * `View.props.onResponderReject: (event) => {}`, where `event` is a
-   * synthetic touch event as described above.
+   * When `true`, indicates that the view is an accessibility element.
+   * By default, all the touchable elements are accessible.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onresponderreject
+   * See http://facebook.github.io/react-native/docs/view.html#accessible
    */
-  onResponderReject: PropTypes.func,
+  accessible?: ?boolean,
 
   /**
-   * Fired at the end of the touch.
-   *
-   * `View.props.onResponderRelease: (event) => {}`, where `event` is a
-   * synthetic touch event as described above.
+   * Overrides the text that's read by the screen reader when the user interacts
+   * with the element. By default, the label is constructed by traversing all
+   * the children and accumulating all the `Text` nodes separated by space.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onresponderrelease
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilitylabel
    */
-  onResponderRelease: PropTypes.func,
+  accessibilityLabel?: ?Stringish,
 
   /**
-   * The responder has been taken from the `View`. Might be taken by other
-   * views after a call to `onResponderTerminationRequest`, or might be taken
-   * by the OS without asking (e.g., happens with control center/ notification
-   * center on iOS)
+   * An accessibility hint helps users understand what will happen when they perform
+   * an action on the accessibility element when that result is not obvious from the
+   * accessibility label.
    *
-   * `View.props.onResponderTerminate: (event) => {}`, where `event` is a
-   * synthetic touch event as described above.
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminate
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilityHint
    */
-  onResponderTerminate: PropTypes.func,
+  accessibilityHint?: ?Stringish,
 
   /**
-   * Some other `View` wants to become responder and is asking this `View` to
-   * release its responder. Returning `true` allows its release.
-   *
-   * `View.props.onResponderTerminationRequest: (event) => {}`, where `event`
-   * is a synthetic touch event as described above.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminationrequest
+   * Indicates to accessibility services to treat UI component like a specific role.
    */
-  onResponderTerminationRequest: PropTypes.func,
+  accessibilityRole?: ?AccessibilityRole,
 
   /**
-   * Does this view want to become responder on the start of a touch?
-   *
-   * `View.props.onStartShouldSetResponder: (event) => [true | false]`, where
-   * `event` is a synthetic touch event as described above.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetresponder
+   * Indicates to accessibility services that UI Component is in a specific State.
    */
-  onStartShouldSetResponder: PropTypes.func,
+  accessibilityStates?: ?AccessibilityStates,
 
   /**
-   * If a parent `View` wants to prevent a child `View` from becoming responder
-   * on a touch start, it should have this handler which returns `true`.
+   * Used to locate this view in end-to-end tests.
    *
-   * `View.props.onStartShouldSetResponderCapture: (event) => [true | false]`,
-   * where `event` is a synthetic touch event as described above.
+   * > This disables the 'layout-only view removal' optimization for this view!
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetrespondercapture
+   * See http://facebook.github.io/react-native/docs/view.html#testid
    */
-  onStartShouldSetResponderCapture: PropTypes.func,
+  testID?: ?string,
 
   /**
-   * Does this view want to "claim" touch responsiveness? This is called for
-   * every touch move on the `View` when it is not the responder.
+   * Used to locate this view from native classes.
    *
-   * `View.props.onMoveShouldSetResponder: (event) => [true | false]`, where
-   * `event` is a synthetic touch event as described above.
+   * > This disables the 'layout-only view removal' optimization for this view!
    *
-   * See http://facebook.github.io/react-native/docs/view.html#onmoveshouldsetresponder
+   * See http://facebook.github.io/react-native/docs/view.html#nativeid
    */
-  onMoveShouldSetResponder: PropTypes.func,
+  nativeID?: ?string,
 
-  /**
-   * If a parent `View` wants to prevent a child `View` from becoming responder
-   * on a move, it should have this handler which returns `true`.
-   *
-   * `View.props.onMoveShouldSetResponderCapture: (event) => [true | false]`,
-   * where `event` is a synthetic touch event as described above.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onMoveShouldsetrespondercapture
-   */
-  onMoveShouldSetResponderCapture: PropTypes.func,
+  tabIndex?: ?number, // TODO(win ISS#2323203)
 
   /**
    * This defines how far a touch event can start away from the view.
@@ -450,34 +467,16 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#hitslop
    */
-  hitSlop: EdgeInsetsPropType,
-
-  /**
-   * Invoked on mount and layout changes with:
-   *
-   * `{nativeEvent: { layout: {x, y, width, height}}}`
-   *
-   * This event is fired immediately once the layout has been calculated, but
-   * the new layout may not yet be reflected on the screen at the time the
-   * event is received, especially if a layout animation is in progress.
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#onlayout
-   */
-  onLayout: PropTypes.func,
+  hitSlop?: ?EdgeInsetsProp,
 
   /**
    * Controls whether the `View` can be the target of touch events.
    *
    * See http://facebook.github.io/react-native/docs/view.html#pointerevents
    */
-  pointerEvents: PropTypes.oneOf(['box-none', 'none', 'box-only', 'auto']),
-
-  /**
-   * See http://facebook.github.io/react-native/docs/style.html
-   */
-  style: stylePropType,
-
-  /**
+  pointerEvents?: ?('auto' | 'box-none' | 'box-only' | 'none'),
+ 
+   /**
    * This is a special performance property exposed by `RCTView` and is useful
    * for scrolling content when there are many subviews, most of which are
    * offscreen. For this property to be effective, it must be applied to a
@@ -487,123 +486,61 @@ module.exports = {
    *
    * See http://facebook.github.io/react-native/docs/view.html#removeclippedsubviews
    */
-  removeClippedSubviews: PropTypes.bool,
-
-  /**
-   * Whether this `View` should render itself (and all of its children) into a
-   * single hardware texture on the GPU.
-   *
-   * @platform android
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#rendertohardwaretextureandroid
-   */
-  renderToHardwareTextureAndroid: PropTypes.bool,
-
-  /**
-   * Whether this `View` should be rendered as a bitmap before compositing.
-   *
-   * @platform ios
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#shouldrasterizeios
-   */
-  shouldRasterizeIOS: PropTypes.bool,
-
-  /**
-   * Views that are only used to layout their children or otherwise don't draw
-   * anything may be automatically removed from the native hierarchy as an
-   * optimization. Set this property to `false` to disable this optimization and
-   * ensure that this `View` exists in the native view hierarchy.
-   *
-   * @platform android
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#collapsable
-   */
-  collapsable: PropTypes.bool,
-
-  /**
-   * Whether this `View` needs to rendered offscreen and composited with an
-   * alpha in order to preserve 100% correct colors and blending behavior.
-   *
-   * @platform android
-   *
-   * See http://facebook.github.io/react-native/docs/view.html#needsoffscreenalphacompositing
-   */
-  needsOffscreenAlphaCompositing: PropTypes.bool,
-
-  /**
-   * When `true`, indicates that the view is clickable. By default,
-   * all the touchable elements are clickable.
-   *
-   * @platform android
-   */
-  clickable: PropTypes.bool, // TODO(android ISS)
+  removeClippedSubviews?: ?boolean,
 
-  /**
-   * When `clickable` is true, the system will try to invoke this function
-   * when the user performs a click.
-   *
-   * @platform android
-   */
-  onClick: PropTypes.func, // TODO(android ISS)
+  onKeyDown?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when a pointing device is moved over the view
    *
    * @platform macos
    */
-  onMouseEnter: PropTypes.func, // TODO(macOS ISS#2323203)
+  onMouseEnter?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when a pointing device is moved out the view
    *
    * @platform macos
    */
-  onMouseLeave: PropTypes.func, // TODO(macOS ISS#2323203)
+  onMouseLeave?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when a dragged element enters a valid drop target
    *
    * @platform macos
    */
-  onDragEnter: PropTypes.func, // TODO(macOS ISS#2323203)
+  onDragEnter?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when a dragged element leaves a valid drop target
    *
    * @platform macos
    */
-  onDragLeave: PropTypes.func, // TODO(macOS ISS#2323203)
+  onDragLeave?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when an element is dropped on a valid drop target
    *
    * @platform macos
    */
-  onDrop: PropTypes.func, // TODO(macOS ISS#2323203)
+  onDrop?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Specifies the Tooltip for the view
    * @platform macos
    */
-  tooltip: PropTypes.string, // TODO(macOS ISS#2323203)
+  tooltip?: ?string, // TODO(macOS ISS#2323203)
 
   /**
    * Specifies whether the view participates in the key view loop as user tabs
    * through different controls.
    */
-  acceptsKeyboardFocus: PropTypes.bool, // TODO(macOS ISS#2323203)
+  acceptsKeyboardFocus?: ?boolean, // TODO(macOS ISS#2323203)
 
   /**
    * Specifies whether focus ring should be drawn when the view has the first responder status.
    */
-  enableFocusRing: PropTypes.bool, // TODO(macOS ISS#2323203)
-
-  /**
-   * fired when the view focus changes (gain->lose or lose->gain)
-   *
-   * @platform android
-   */
-  onFocusChange: PropTypes.func, // TODO(android ISS)
+  enableFocusRing?: ?boolean, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when an element is focused
@@ -611,7 +548,7 @@ module.exports = {
    * @platform macos
    * @platform ios
    */
-  onFocus: PropTypes.func, // TODO(macOS ISS#2323203)
+  onFocus?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Fired when an element loses focus
@@ -619,7 +556,7 @@ module.exports = {
    * @platform macos
    * @platform ios
    */
-  onBlur: PropTypes.func, // TODO(macOS ISS#2323203)
+  onBlur?: ?Function, // TODO(macOS ISS#2323203)
 
   /**
    * Enables Dran'n'Drop Support for certain types of dragged types
@@ -630,10 +567,7 @@ module.exports = {
    *
    * @platform macos
    */
-  draggedTypes: PropTypes.oneOfType([
-    PropTypes.oneOf(DraggedTypes),
-    PropTypes.arrayOf(PropTypes.oneOf(DraggedTypes)),
-  ]), // TODO(macOS ISS#2323203)
+  draggedTypes?: ?DraggedTypes | ?$ReadOnlyArray<DraggedTypes>, // TODO(macOS ISS#2323203)
 
   /**
    * Any additional platform-specific view prop types, or prop type overrides.
diff --git a/Libraries/Components/ViewPager/ViewPagerAndroid.android.js b/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
index 2b69a2777a3ae6..f5075a94ebe7b7 100644
--- a/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
+++ b/Libraries/Components/ViewPager/ViewPagerAndroid.android.js
@@ -1,29 +1,49 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
- * @flow
+ * @flow strict-local
  */
 
 'use strict';
 
 const React = require('React');
-const PropTypes = require('prop-types');
 const ReactNative = require('ReactNative');
 const UIManager = require('UIManager');
-const ViewPropTypes = require('ViewPropTypes');
 
 const dismissKeyboard = require('dismissKeyboard');
 const requireNativeComponent = require('requireNativeComponent');
 
 const NativeAndroidViewPager = requireNativeComponent('AndroidViewPager');
 
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {ViewStyleProp} from 'StyleSheet';
+
 const VIEWPAGER_REF = 'viewPager';
 
-type Event = Object;
+type PageScrollState = 'idle' | 'dragging' | 'settling';
+
+type PageScrollEvent = SyntheticEvent<
+  $ReadOnly<{|
+    position: number,
+    offset: number,
+  |}>,
+>;
+
+type PageScrollStateChangedEvent = SyntheticEvent<
+  $ReadOnly<{|
+    pageScrollState: PageScrollState,
+  |}>,
+>;
+
+type PageSelectedEvent = SyntheticEvent<
+  $ReadOnly<{|
+    position: number,
+  |}>,
+>;
 
 export type ViewPagerScrollState = $Enum<{
   idle: string,
@@ -31,6 +51,73 @@ export type ViewPagerScrollState = $Enum<{
   settling: string,
 }>;
 
+type Props = $ReadOnly<{|
+  /**
+   * Index of initial page that should be selected. Use `setPage` method to
+   * update the page, and `onPageSelected` to monitor page changes
+   */
+  initialPage?: ?number,
+
+  /**
+   * Executed when transitioning between pages (ether because of animation for
+   * the requested page change or when user is swiping/dragging between pages)
+   * The `event.nativeEvent` object for this callback will carry following data:
+   *  - position - index of first page from the left that is currently visible
+   *  - offset - value from range [0,1) describing stage between page transitions.
+   *    Value x means that (1 - x) fraction of the page at "position" index is
+   *    visible, and x fraction of the next page is visible.
+   */
+  onPageScroll?: ?(e: PageScrollEvent) => void,
+
+  /**
+   * Function called when the page scrolling state has changed.
+   * The page scrolling state can be in 3 states:
+   * - idle, meaning there is no interaction with the page scroller happening at the time
+   * - dragging, meaning there is currently an interaction with the page scroller
+   * - settling, meaning that there was an interaction with the page scroller, and the
+   *   page scroller is now finishing it's closing or opening animation
+   */
+  onPageScrollStateChanged?: ?(e: PageScrollState) => void,
+
+  /**
+   * This callback will be called once ViewPager finish navigating to selected page
+   * (when user swipes between pages). The `event.nativeEvent` object passed to this
+   * callback will have following fields:
+   *  - position - index of page that has been selected
+   */
+  onPageSelected?: ?(e: PageSelectedEvent) => void,
+
+  /**
+   * Blank space to show between pages. This is only visible while scrolling, pages are still
+   * edge-to-edge.
+   */
+  pageMargin?: ?number,
+
+  /**
+   * Whether enable showing peekFraction or not. If this is true, the preview of
+   * last and next page will show in current screen. Defaults to false.
+   */
+
+  peekEnabled?: ?boolean,
+
+  /**
+   * Determines whether the keyboard gets dismissed in response to a drag.
+   *   - 'none' (the default), drags do not dismiss the keyboard.
+   *   - 'on-drag', the keyboard is dismissed when a drag begins.
+   */
+  keyboardDismissMode?: ?('none' | 'on-drag'),
+
+  /**
+   * When false, the content does not scroll.
+   * The default value is true.
+   */
+  scrollEnabled?: ?boolean,
+
+  children?: React.Node,
+
+  style?: ?ViewStyleProp,
+|}>;
+
 /**
  * Container that allows to flip left and right between child views. Each
  * child view of the `ViewPagerAndroid` will be treated as a separate page
@@ -72,84 +159,8 @@ export type ViewPagerScrollState = $Enum<{
  * }
  * ```
  */
-class ViewPagerAndroid extends React.Component<{
-  initialPage?: number,
-  onPageScroll?: Function,
-  onPageScrollStateChanged?: Function,
-  onPageSelected?: Function,
-  pageMargin?: number,
-  peekEnabled?: boolean,
-  keyboardDismissMode?: 'none' | 'on-drag',
-  scrollEnabled?: boolean,
-}> {
-  /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
-   * when making Flow check .android.js files. */
-  static propTypes = {
-    ...ViewPropTypes,
-    /**
-     * Index of initial page that should be selected. Use `setPage` method to
-     * update the page, and `onPageSelected` to monitor page changes
-     */
-    initialPage: PropTypes.number,
-
-    /**
-     * Executed when transitioning between pages (ether because of animation for
-     * the requested page change or when user is swiping/dragging between pages)
-     * The `event.nativeEvent` object for this callback will carry following data:
-     *  - position - index of first page from the left that is currently visible
-     *  - offset - value from range [0,1) describing stage between page transitions.
-     *    Value x means that (1 - x) fraction of the page at "position" index is
-     *    visible, and x fraction of the next page is visible.
-     */
-    onPageScroll: PropTypes.func,
-
-    /**
-     * Function called when the page scrolling state has changed.
-     * The page scrolling state can be in 3 states:
-     * - idle, meaning there is no interaction with the page scroller happening at the time
-     * - dragging, meaning there is currently an interaction with the page scroller
-     * - settling, meaning that there was an interaction with the page scroller, and the
-     *   page scroller is now finishing it's closing or opening animation
-     */
-    onPageScrollStateChanged: PropTypes.func,
-
-    /**
-     * This callback will be called once ViewPager finish navigating to selected page
-     * (when user swipes between pages). The `event.nativeEvent` object passed to this
-     * callback will have following fields:
-     *  - position - index of page that has been selected
-     */
-    onPageSelected: PropTypes.func,
-
-    /**
-     * Blank space to show between pages. This is only visible while scrolling, pages are still
-     * edge-to-edge.
-     */
-    pageMargin: PropTypes.number,
-
-    /**
-     * Determines whether the keyboard gets dismissed in response to a drag.
-     *   - 'none' (the default), drags do not dismiss the keyboard.
-     *   - 'on-drag', the keyboard is dismissed when a drag begins.
-     */
-    keyboardDismissMode: PropTypes.oneOf([
-      'none', // default
-      'on-drag',
-    ]),
-
-    /**
-     * When false, the content does not scroll.
-     * The default value is true.
-     */
-    scrollEnabled: PropTypes.bool,
-
-    /**
-     * Whether enable showing peekFraction or not. If this is true, the preview of
-     * last and next page will show in current screen. Defaults to false.
-     */
-    peekEnabled: PropTypes.bool,
-  };
 
+class ViewPagerAndroid extends React.Component<Props> {
   componentDidMount() {
     if (this.props.initialPage != null) {
       this.setPageWithoutAnimation(this.props.initialPage);
@@ -205,7 +216,7 @@ class ViewPagerAndroid extends React.Component<{
     });
   };
 
-  _onPageScroll = (e: Event) => {
+  _onPageScroll = (e: PageScrollEvent) => {
     if (this.props.onPageScroll) {
       this.props.onPageScroll(e);
     }
@@ -214,13 +225,13 @@ class ViewPagerAndroid extends React.Component<{
     }
   };
 
-  _onPageScrollStateChanged = (e: Event) => {
+  _onPageScrollStateChanged = (e: PageScrollStateChangedEvent) => {
     if (this.props.onPageScrollStateChanged) {
       this.props.onPageScrollStateChanged(e.nativeEvent.pageScrollState);
     }
   };
 
-  _onPageSelected = (e: Event) => {
+  _onPageSelected = (e: PageSelectedEvent) => {
     if (this.props.onPageSelected) {
       this.props.onPageSelected(e);
     }
@@ -233,7 +244,7 @@ class ViewPagerAndroid extends React.Component<{
   setPage = (selectedPage: number) => {
     UIManager.dispatchViewManagerCommand(
       ReactNative.findNodeHandle(this),
-      UIManager.AndroidViewPager.Commands.setPage,
+      UIManager.getViewManagerConfig('AndroidViewPager').Commands.setPage,
       [selectedPage],
     );
   };
@@ -245,7 +256,8 @@ class ViewPagerAndroid extends React.Component<{
   setPageWithoutAnimation = (selectedPage: number) => {
     UIManager.dispatchViewManagerCommand(
       ReactNative.findNodeHandle(this),
-      UIManager.AndroidViewPager.Commands.setPageWithoutAnimation,
+      UIManager.getViewManagerConfig('AndroidViewPager').Commands
+        .setPageWithoutAnimation,
       [selectedPage],
     );
   };
diff --git a/Libraries/Components/ViewPager/ViewPagerAndroid.ios.js b/Libraries/Components/ViewPager/ViewPagerAndroid.ios.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/Components/ViewPager/ViewPagerAndroid.ios.js
+++ b/Libraries/Components/ViewPager/ViewPagerAndroid.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/WebView/WebView.android.js b/Libraries/Components/WebView/WebView.android.js
index bed2179734579a..83991432b57c83 100644
--- a/Libraries/Components/WebView/WebView.android.js
+++ b/Libraries/Components/WebView/WebView.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,15 +9,15 @@
 
 'use strict';
 
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
 const ActivityIndicator = require('ActivityIndicator');
-const React = require('React');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
 const PropTypes = require('prop-types');
+const React = require('React');
 const ReactNative = require('ReactNative');
 const StyleSheet = require('StyleSheet');
 const UIManager = require('UIManager');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
 const WebViewShared = require('WebViewShared');
 
 const deprecatedPropType = require('deprecatedPropType');
@@ -44,7 +44,7 @@ const defaultRenderLoading = () => (
  */
 class WebView extends React.Component {
   static propTypes = {
-    ...ViewPropTypes,
+    ...DeprecatedViewPropTypes,
     renderError: PropTypes.func,
     renderLoading: PropTypes.func,
     onLoad: PropTypes.func,
@@ -52,12 +52,12 @@ class WebView extends React.Component {
     onLoadStart: PropTypes.func,
     onError: PropTypes.func,
     automaticallyAdjustContentInsets: PropTypes.bool,
-    contentInset: EdgeInsetsPropType,
+    contentInset: DeprecatedEdgeInsetsPropType,
     onNavigationStateChange: PropTypes.func,
     onMessage: PropTypes.func,
     onContentSizeChange: PropTypes.func,
     startInLoadingState: PropTypes.bool, // force WebView to show loadingView on first load
-    style: ViewPropTypes.style,
+    style: DeprecatedViewPropTypes.style,
 
     html: deprecatedPropType(
       PropTypes.string,
@@ -150,6 +150,12 @@ class WebView extends React.Component {
      */
     scalesPageToFit: PropTypes.bool,
 
+    /**
+     * Sets whether the webview allow access to file system.
+     * @platform android
+     */
+    allowFileAccess: PropTypes.bool,
+
     /**
      * Sets the user-agent for this WebView. The user-agent can also be set in native using
      * WebViewConfig. This prop will overwrite that config.
@@ -317,6 +323,7 @@ class WebView extends React.Component {
         style={webViewStyles}
         source={resolveAssetSource(source)}
         scalesPageToFit={this.props.scalesPageToFit}
+        allowFileAccess={this.props.allowFileAccess}
         injectedJavaScript={this.props.injectedJavaScript}
         userAgent={this.props.userAgent}
         javaScriptEnabled={this.props.javaScriptEnabled}
@@ -359,7 +366,7 @@ class WebView extends React.Component {
   goForward = () => {
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.goForward,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.goForward,
       null,
     );
   };
@@ -367,7 +374,7 @@ class WebView extends React.Component {
   goBack = () => {
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.goBack,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.goBack,
       null,
     );
   };
@@ -378,7 +385,7 @@ class WebView extends React.Component {
     });
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.reload,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.reload,
       null,
     );
   };
@@ -386,7 +393,7 @@ class WebView extends React.Component {
   stopLoading = () => {
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.stopLoading,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.stopLoading,
       null,
     );
   };
@@ -394,7 +401,7 @@ class WebView extends React.Component {
   postMessage = data => {
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.postMessage,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.postMessage,
       [String(data)],
     );
   };
@@ -408,7 +415,7 @@ class WebView extends React.Component {
   injectJavaScript = data => {
     UIManager.dispatchViewManagerCommand(
       this.getWebViewHandle(),
-      UIManager.RCTWebView.Commands.injectJavaScript,
+      UIManager.getViewManagerConfig('RCTWebView').Commands.injectJavaScript,
       [data],
     );
   };
diff --git a/Libraries/Components/WebView/WebView.ios.js b/Libraries/Components/WebView/WebView.ios.js
index 329dd2027c1844..ba8034644d52a7 100644
--- a/Libraries/Components/WebView/WebView.ios.js
+++ b/Libraries/Components/WebView/WebView.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,17 +11,16 @@
 'use strict';
 
 const ActivityIndicator = require('ActivityIndicator');
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
 const Linking = require('Linking');
 const PropTypes = require('prop-types');
 const React = require('React');
 const ReactNative = require('ReactNative');
-const ScrollView = require('ScrollView');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
 const UIManager = require('UIManager');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
 const WebViewShared = require('WebViewShared');
 
 const deprecatedPropType = require('deprecatedPropType');
@@ -114,7 +113,7 @@ class WebView extends React.Component {
   static JSNavigationScheme = JSNavigationScheme;
   static NavigationType = NavigationType;
   static propTypes = {
-    ...ViewPropTypes,
+    ...DeprecatedViewPropTypes,
 
     html: deprecatedPropType(
       PropTypes.string,
@@ -234,7 +233,7 @@ class WebView extends React.Component {
      * the scroll view. Defaults to {top: 0, left: 0, bottom: 0, right: 0}.
      * @platform ios
      */
-    contentInset: EdgeInsetsPropType,
+    contentInset: DeprecatedEdgeInsetsPropType,
     /**
      * Function that is invoked when the `WebView` loading starts or ends.
      */
@@ -257,7 +256,7 @@ class WebView extends React.Component {
     /**
      * The style to apply to the `WebView`.
      */
-    style: ViewPropTypes.style,
+    style: DeprecatedViewPropTypes.style,
 
     /**
      * Determines the types of data converted to clickable URLs in the web view's content.
@@ -561,10 +560,10 @@ class WebView extends React.Component {
 
   _getCommands() {
     if (!this.props.useWebKit) {
-      return UIManager.RCTWebView.Commands;
+      return UIManager.getViewManagerConfig('RCTWebView').Commands;
     }
 
-    return UIManager.RCTWKWebView.Commands;
+    return UIManager.getViewManagerConfig('RCTWKWebView').Commands;
   }
 
   /**
diff --git a/Libraries/Components/WebView/WebViewShared.js b/Libraries/Components/WebView/WebViewShared.js
index 5a3006e845b0cc..af2f7e9a80baaa 100644
--- a/Libraries/Components/WebView/WebViewShared.js
+++ b/Libraries/Components/WebView/WebViewShared.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Components/WebView/__tests__/WebViewShared-test.js b/Libraries/Components/WebView/__tests__/WebViewShared-test.js
index b7456638fedb71..2a6dee2e2758de 100644
--- a/Libraries/Components/WebView/__tests__/WebViewShared-test.js
+++ b/Libraries/Components/WebView/__tests__/WebViewShared-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/Devtools/__tests__/parseErrorStack-test.js b/Libraries/Core/Devtools/__tests__/parseErrorStack-test.js
index 79d677e217e71c..14aafede381848 100644
--- a/Libraries/Core/Devtools/__tests__/parseErrorStack-test.js
+++ b/Libraries/Core/Devtools/__tests__/parseErrorStack-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/Devtools/getDevServer.js b/Libraries/Core/Devtools/getDevServer.js
index adcc28c2d067e1..3eae2fbc404baf 100644
--- a/Libraries/Core/Devtools/getDevServer.js
+++ b/Libraries/Core/Devtools/getDevServer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/Devtools/openFileInEditor.js b/Libraries/Core/Devtools/openFileInEditor.js
index eedf9f1233d68d..00074b91eefedf 100644
--- a/Libraries/Core/Devtools/openFileInEditor.js
+++ b/Libraries/Core/Devtools/openFileInEditor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/Devtools/parseErrorStack.js b/Libraries/Core/Devtools/parseErrorStack.js
index ec85260d7eaa35..ff308d1dd243cf 100644
--- a/Libraries/Core/Devtools/parseErrorStack.js
+++ b/Libraries/Core/Devtools/parseErrorStack.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,6 +19,7 @@ export type StackFrame = {
 
 export type ExtendedError = Error & {
   framesToPop?: number,
+  jsEngine?: string,
 };
 
 function parseErrorStack(e: ExtendedError): Array<StackFrame> {
diff --git a/Libraries/Core/Devtools/setupDevtools.js b/Libraries/Core/Devtools/setupDevtools.js
index ba0f578b066445..010c1abc109a2d 100644
--- a/Libraries/Core/Devtools/setupDevtools.js
+++ b/Libraries/Core/Devtools/setupDevtools.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,16 +10,6 @@
 
 'use strict';
 
-type DevToolsPluginConnection = {
-  isAppActive: () => boolean,
-  host: string,
-  port: number,
-};
-
-type DevToolsPlugin = {
-  connectToDevTools: (connection: DevToolsPluginConnection) => void,
-};
-
 let register = function() {
   // noop
 };
diff --git a/Libraries/Core/Devtools/symbolicateStackTrace.js b/Libraries/Core/Devtools/symbolicateStackTrace.js
index b5d7d4e9754ff0..93d643cdb3380d 100644
--- a/Libraries/Core/Devtools/symbolicateStackTrace.js
+++ b/Libraries/Core/Devtools/symbolicateStackTrace.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/ExceptionsManager.js b/Libraries/Core/ExceptionsManager.js
index bc32f5d0d23890..08fe06f72b6c47 100644
--- a/Libraries/Core/ExceptionsManager.js
+++ b/Libraries/Core/ExceptionsManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,18 +22,16 @@ function reportException(e: ExtendedError, isFatal: boolean) {
     const parseErrorStack = require('parseErrorStack');
     const stack = parseErrorStack(e);
     const currentExceptionID = ++exceptionID;
+    const message =
+      e.jsEngine == null ? e.message : `${e.message}, js engine: ${e.jsEngine}`;
     if (isFatal) {
       ExceptionsManager.reportFatalException(
-        e.message,
+        message,
         stack,
         currentExceptionID,
       );
     } else {
-      ExceptionsManager.reportSoftException(
-        e.message,
-        stack,
-        currentExceptionID,
-      );
+      ExceptionsManager.reportSoftException(message, stack, currentExceptionID);
     }
     if (__DEV__) {
       const symbolicateStackTrace = require('symbolicateStackTrace');
diff --git a/Libraries/Core/InitializeCore.js b/Libraries/Core/InitializeCore.js
index 119deb92b2b0bc..2a2ca6479b5399 100644
--- a/Libraries/Core/InitializeCore.js
+++ b/Libraries/Core/InitializeCore.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,198 +25,31 @@
  */
 'use strict';
 
-const {polyfillObjectProperty, polyfillGlobal} = require('PolyfillFunctions');
-
-if (global.GLOBAL === undefined) {
-  global.GLOBAL = global;
-}
-
-if (global.window === undefined) {
-  global.window = global;
-}
-
-// Set up collections
-const _shouldPolyfillCollection = require('_shouldPolyfillES6Collection');
-if (_shouldPolyfillCollection('Map')) {
-  polyfillGlobal('Map', () => require('Map'));
-}
-if (_shouldPolyfillCollection('Set')) {
-  polyfillGlobal('Set', () => require('Set'));
-}
-
-// Set up process
-global.process = global.process || {};
-global.process.env = global.process.env || {};
-if (!global.process.env.NODE_ENV) {
-  global.process.env.NODE_ENV = __DEV__ ? 'development' : 'production';
-}
-
-// Setup the Systrace profiling hooks if necessary
-if (global.__RCTProfileIsProfiling) {
-  const Systrace = require('Systrace');
-  Systrace.installReactHook();
-  Systrace.setEnabled(true);
-}
-
-// Set up console
-const ExceptionsManager = require('ExceptionsManager');
-ExceptionsManager.installConsoleErrorReporter();
-
-// Set up error handler
-if (!global.__fbDisableExceptionsManager) {
-  const handleError = (e, isFatal) => {
-    try {
-      ExceptionsManager.handleException(e, isFatal);
-    } catch (ee) {
-      console.log('Failed to print error: ', ee.message);
-      throw e;
-    }
-  };
-
-  const ErrorUtils = require('ErrorUtils');
-  ErrorUtils.setGlobalHandler(handleError);
-}
-
-// Check for compatibility between the JS and native code
-const ReactNativeVersionCheck = require('ReactNativeVersionCheck');
-ReactNativeVersionCheck.checkVersions();
-
-// Set up Promise
-// The native Promise implementation throws the following error:
-// ERROR: Event loop not supported.
-polyfillGlobal('Promise', () => require('Promise'));
-
-// Set up regenerator.
-polyfillGlobal('regeneratorRuntime', () => {
-  // The require just sets up the global, so make sure when we first
-  // invoke it the global does not exist
-  delete global.regeneratorRuntime;
-  /* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an
-   * error found when Flow v0.54 was deployed. To see the error delete this
-   * comment and run Flow. */
-  require('regenerator-runtime/runtime');
-  return global.regeneratorRuntime;
-});
-
-// Set up timers
-const defineLazyTimer = name => {
-  polyfillGlobal(name, () => require('JSTimers')[name]);
-};
-defineLazyTimer('setTimeout');
-defineLazyTimer('setInterval');
-defineLazyTimer('setImmediate');
-defineLazyTimer('clearTimeout');
-defineLazyTimer('clearInterval');
-defineLazyTimer('clearImmediate');
-defineLazyTimer('requestAnimationFrame');
-defineLazyTimer('cancelAnimationFrame');
-defineLazyTimer('requestIdleCallback');
-defineLazyTimer('cancelIdleCallback');
-
-// Set up XHR
-// The native XMLHttpRequest in Chrome dev tools is CORS aware and won't
-// let you fetch anything from the internet
-polyfillGlobal('XMLHttpRequest', () => require('XMLHttpRequest'));
-polyfillGlobal('FormData', () => require('FormData'));
-
-polyfillGlobal('fetch', () => require('fetch').fetch);
-polyfillGlobal('Headers', () => require('fetch').Headers);
-polyfillGlobal('Request', () => require('fetch').Request);
-polyfillGlobal('Response', () => require('fetch').Response);
-polyfillGlobal('WebSocket', () => require('WebSocket'));
-polyfillGlobal('Blob', () => require('Blob'));
-polyfillGlobal('File', () => require('File'));
-polyfillGlobal('FileReader', () => require('FileReader'));
-polyfillGlobal('URL', () => require('URL'));
-
-// Set up alert
-if (!global.alert) {
-  global.alert = function(text) {
-    // Require Alert on demand. Requiring it too early can lead to issues
-    // with things like Platform not being fully initialized.
-    require('Alert').alert('Alert', '' + text);
-  };
-}
-
-// Set up Geolocation
-let navigator = global.navigator;
-if (navigator === undefined) {
-  global.navigator = navigator = {};
+const start = Date.now();
+
+require('setUpGlobals');
+require('polyfillES6Collections');
+require('setUpSystrace');
+require('setUpErrorHandling');
+require('checkNativeVersion');
+require('polyfillPromise');
+require('setUpRegeneratorRuntime');
+require('setUpTimers');
+require('setUpXHR');
+require('setUpAlert');
+require('setUpGeolocation');
+require('setUpBatchedBridge');
+require('setUpSegmentFetcher');
+if (__DEV__) {
+  require('setUpDeveloperTools');
 }
 
-// see https://github.com/facebook/react-native/issues/10881
-polyfillObjectProperty(navigator, 'product', () => 'ReactNative');
-polyfillObjectProperty(navigator, 'geolocation', () => require('Geolocation'));
-
-// Just to make sure the JS gets packaged up. Wait until the JS environment has
-// been initialized before requiring them.
-const BatchedBridge = require('BatchedBridge');
-BatchedBridge.registerLazyCallableModule('Systrace', () => require('Systrace'));
-BatchedBridge.registerLazyCallableModule('JSTimers', () => require('JSTimers'));
-BatchedBridge.registerLazyCallableModule('HeapCapture', () =>
-  require('HeapCapture'),
-);
-BatchedBridge.registerLazyCallableModule('SamplingProfiler', () =>
-  require('SamplingProfiler'),
-);
-BatchedBridge.registerLazyCallableModule('RCTLog', () => require('RCTLog'));
-BatchedBridge.registerLazyCallableModule('RCTDeviceEventEmitter', () =>
-  require('RCTDeviceEventEmitter'),
-);
-BatchedBridge.registerLazyCallableModule('RCTNativeAppEventEmitter', () =>
-  require('RCTNativeAppEventEmitter'),
-);
-BatchedBridge.registerLazyCallableModule('PerformanceLogger', () =>
-  require('PerformanceLogger'),
+const PerformanceLogger = require('PerformanceLogger');
+// We could just call PerformanceLogger.markPoint at the top of the file,
+// but then we'd be excluding the time it took to require PerformanceLogger.
+// Instead, we just use Date.now and backdate the timestamp.
+PerformanceLogger.markPoint(
+  'initializeCore_start',
+  PerformanceLogger.currentTimestamp() - (Date.now() - start),
 );
-BatchedBridge.registerLazyCallableModule('JSDevSupportModule', () =>
-  require('JSDevSupportModule'),
-);
-
-global.__fetchSegment = function(
-  segmentId: number,
-  options: {|+otaBuildNumber: ?string|},
-  callback: (?Error) => void,
-) {
-  const {SegmentFetcher} = require('NativeModules');
-  if (!SegmentFetcher) {
-    throw new Error(
-      'SegmentFetcher is missing. Please ensure that it is ' +
-        'included as a NativeModule.',
-    );
-  }
-
-  SegmentFetcher.fetchSegment(
-    segmentId,
-    options,
-    (errorObject: ?{message: string, code: string}) => {
-      if (errorObject) {
-        const error = new Error(errorObject.message);
-        (error: any).code = errorObject.code;
-        callback(error);
-      }
-
-      callback(null);
-    },
-  );
-};
-
-// Set up devtools
-if (__DEV__) {
-  if (!global.__RCTProfileIsProfiling) {
-    BatchedBridge.registerCallableModule('HMRClient', require('HMRClient'));
-
-    // not when debugging in chrome
-    // TODO(t12832058) This check is broken
-    if (!window.document) {
-      require('setupDevtools');
-    }
-
-    // Set up inspector
-    const JSInspector = require('JSInspector');
-    /* $FlowFixMe(>=0.56.0 site=react_native_fb,react_native_oss) This comment
-     * suppresses an error found when Flow v0.56 was deployed. To see the error
-     * delete this comment and run Flow. */
-    JSInspector.registerAgent(require('NetworkAgent'));
-  }
-}
+PerformanceLogger.markPoint('initializeCore_end');
diff --git a/Libraries/Core/ReactNativeVersion.js b/Libraries/Core/ReactNativeVersion.js
index 1b2b2155f55175..1a0b78da1f7ee5 100644
--- a/Libraries/Core/ReactNativeVersion.js
+++ b/Libraries/Core/ReactNativeVersion.js
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,7 @@
 
 exports.version = {
   major: 0,
-  minor: 0,
-  patch: 0,
+  minor: 58,
+  patch: 6,
   prerelease: null,
 };
diff --git a/Libraries/Core/ReactNativeVersionCheck.js b/Libraries/Core/ReactNativeVersionCheck.js
index 623ae4f3536b19..578b205645a487 100644
--- a/Libraries/Core/ReactNativeVersionCheck.js
+++ b/Libraries/Core/ReactNativeVersionCheck.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/Timers/JSTimers.js b/Libraries/Core/Timers/JSTimers.js
index 7cffb4e3d06d82..36a56fd8cf97cd 100644
--- a/Libraries/Core/Timers/JSTimers.js
+++ b/Libraries/Core/Timers/JSTimers.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -290,6 +290,9 @@ const JSTimers = {
    * @param {function} func Callback to be invoked before the end of the
    * current JavaScript execution loop.
    */
+  /* $FlowFixMe(>=0.79.1 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.79 was deployed. To see the error delete this
+   * comment and run Flow. */
   setImmediate: function(func: Function, ...args: any) {
     const id = _allocateCallback(
       () => func.apply(undefined, args),
@@ -302,6 +305,9 @@ const JSTimers = {
   /**
    * @param {function} func Callback to be invoked every frame.
    */
+  /* $FlowFixMe(>=0.79.1 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.79 was deployed. To see the error delete this
+   * comment and run Flow. */
   requestAnimationFrame: function(func: Function) {
     const id = _allocateCallback(func, 'requestAnimationFrame');
     Timing.createTimer(id, 1, Date.now(), /* recurring */ false);
@@ -313,6 +319,9 @@ const JSTimers = {
    * with time remaining in frame.
    * @param {?object} options
    */
+  /* $FlowFixMe(>=0.79.1 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.79 was deployed. To see the error delete this
+   * comment and run Flow. */
   requestIdleCallback: function(func: Function, options: ?Object) {
     if (requestIdleCallbacks.length === 0) {
       Timing.setSendIdleEvents(true);
diff --git a/Libraries/Core/__mocks__/ErrorUtils.js b/Libraries/Core/__mocks__/ErrorUtils.js
index 2719c138c4549d..8505e23dc562fc 100644
--- a/Libraries/Core/__mocks__/ErrorUtils.js
+++ b/Libraries/Core/__mocks__/ErrorUtils.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/__tests__/ReactNativeVersionCheck-test.js b/Libraries/Core/__tests__/ReactNativeVersionCheck-test.js
index e5c8cefddf15bb..6f4da360362e9f 100644
--- a/Libraries/Core/__tests__/ReactNativeVersionCheck-test.js
+++ b/Libraries/Core/__tests__/ReactNativeVersionCheck-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Core/checkNativeVersion.js b/Libraries/Core/checkNativeVersion.js
new file mode 100644
index 00000000000000..36a8b40ac530ba
--- /dev/null
+++ b/Libraries/Core/checkNativeVersion.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Check for compatibility between the JS and native code.
+ * You can use this module directly, or just require InitializeCore.
+ */
+const ReactNativeVersionCheck = require('ReactNativeVersionCheck');
+ReactNativeVersionCheck.checkVersions();
diff --git a/Libraries/Core/polyfillES6Collections.js b/Libraries/Core/polyfillES6Collections.js
new file mode 100644
index 00000000000000..ca1ee798c73f4c
--- /dev/null
+++ b/Libraries/Core/polyfillES6Collections.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+const {polyfillGlobal} = require('PolyfillFunctions');
+
+/**
+ * Polyfill ES6 collections (Map and Set).
+ * If you don't need these polyfills, don't use InitializeCore; just directly
+ * require the modules you need from InitializeCore for setup.
+ */
+const _shouldPolyfillCollection = require('_shouldPolyfillES6Collection');
+if (_shouldPolyfillCollection('Map')) {
+  polyfillGlobal('Map', () => require('Map'));
+}
+if (_shouldPolyfillCollection('Set')) {
+  polyfillGlobal('Set', () => require('Set'));
+}
diff --git a/Libraries/Core/polyfillPromise.js b/Libraries/Core/polyfillPromise.js
new file mode 100644
index 00000000000000..f2068df4e98a02
--- /dev/null
+++ b/Libraries/Core/polyfillPromise.js
@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+'use strict';
+
+const {polyfillGlobal} = require('PolyfillFunctions');
+
+/**
+ * Set up Promise. The native Promise implementation throws the following error:
+ * ERROR: Event loop not supported.
+ *
+ * If you don't need these polyfills, don't use InitializeCore; just directly
+ * require the modules you need from InitializeCore for setup.
+ */
+polyfillGlobal('Promise', () => require('Promise'));
diff --git a/Libraries/Core/setUpAlert.js b/Libraries/Core/setUpAlert.js
new file mode 100644
index 00000000000000..0b2bdc9f6a5273
--- /dev/null
+++ b/Libraries/Core/setUpAlert.js
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Set up alert().
+ * You can use this module directly, or just require InitializeCore.
+ */
+if (!global.alert) {
+  global.alert = function(text) {
+    // Require Alert on demand. Requiring it too early can lead to issues
+    // with things like Platform not being fully initialized.
+    require('Alert').alert('Alert', '' + text);
+  };
+}
diff --git a/Libraries/Core/setUpBatchedBridge.js b/Libraries/Core/setUpBatchedBridge.js
new file mode 100644
index 00000000000000..fd936bf50426a3
--- /dev/null
+++ b/Libraries/Core/setUpBatchedBridge.js
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Set up the BatchedBridge. This must be done after the other steps in
+ * InitializeCore to ensure that the JS environment has been initialized.
+ * You can use this module directly, or just require InitializeCore.
+ */
+const BatchedBridge = require('BatchedBridge');
+BatchedBridge.registerLazyCallableModule('Systrace', () => require('Systrace'));
+BatchedBridge.registerLazyCallableModule('JSTimers', () => require('JSTimers'));
+BatchedBridge.registerLazyCallableModule('HeapCapture', () =>
+  require('HeapCapture'),
+);
+BatchedBridge.registerLazyCallableModule('SamplingProfiler', () =>
+  require('SamplingProfiler'),
+);
+BatchedBridge.registerLazyCallableModule('RCTLog', () => require('RCTLog'));
+BatchedBridge.registerLazyCallableModule('RCTDeviceEventEmitter', () =>
+  require('RCTDeviceEventEmitter'),
+);
+BatchedBridge.registerLazyCallableModule('RCTNativeAppEventEmitter', () =>
+  require('RCTNativeAppEventEmitter'),
+);
+BatchedBridge.registerLazyCallableModule('PerformanceLogger', () =>
+  require('PerformanceLogger'),
+);
+BatchedBridge.registerLazyCallableModule('JSDevSupportModule', () =>
+  require('JSDevSupportModule'),
+);
+
+if (__DEV__ && !global.__RCTProfileIsProfiling) {
+  BatchedBridge.registerCallableModule('HMRClient', require('HMRClient'));
+}
diff --git a/Libraries/Core/setUpDeveloperTools.js b/Libraries/Core/setUpDeveloperTools.js
new file mode 100644
index 00000000000000..2ee713da0b4dae
--- /dev/null
+++ b/Libraries/Core/setUpDeveloperTools.js
@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Sets up developer tools for React Native.
+ * You can use this module directly, or just require InitializeCore.
+ */
+if (__DEV__) {
+  if (!global.__RCTProfileIsProfiling) {
+    // not when debugging in chrome
+    // TODO(t12832058) This check is broken
+    if (!window.document) {
+      require('setupDevtools');
+    }
+
+    // Set up inspector
+    const JSInspector = require('JSInspector');
+    JSInspector.registerAgent(require('NetworkAgent'));
+  }
+}
diff --git a/Libraries/Core/setUpErrorHandling.js b/Libraries/Core/setUpErrorHandling.js
new file mode 100644
index 00000000000000..7a9c566905d8f9
--- /dev/null
+++ b/Libraries/Core/setUpErrorHandling.js
@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Sets up the console and exception handling (redbox) for React Native.
+ * You can use this module directly, or just require InitializeCore.
+ */
+const ExceptionsManager = require('ExceptionsManager');
+ExceptionsManager.installConsoleErrorReporter();
+
+// Set up error handler
+if (!global.__fbDisableExceptionsManager) {
+  const handleError = (e, isFatal) => {
+    try {
+      ExceptionsManager.handleException(e, isFatal);
+    } catch (ee) {
+      console.log('Failed to print error: ', ee.message);
+      throw e;
+    }
+  };
+
+  const ErrorUtils = require('ErrorUtils');
+  ErrorUtils.setGlobalHandler(handleError);
+}
diff --git a/Libraries/Core/setUpGeolocation.js b/Libraries/Core/setUpGeolocation.js
new file mode 100644
index 00000000000000..fd68182bce6bfb
--- /dev/null
+++ b/Libraries/Core/setUpGeolocation.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+const {polyfillObjectProperty} = require('PolyfillFunctions');
+
+/**
+ * Set up Geolocation.
+ * You can use this module directly, or just require InitializeCore.
+ */
+let navigator = global.navigator;
+if (navigator === undefined) {
+  global.navigator = navigator = {};
+}
+
+// see https://github.com/facebook/react-native/issues/10881
+polyfillObjectProperty(navigator, 'product', () => 'ReactNative');
+polyfillObjectProperty(navigator, 'geolocation', () => require('Geolocation'));
diff --git a/Libraries/Core/setUpGlobals.js b/Libraries/Core/setUpGlobals.js
new file mode 100644
index 00000000000000..0310f3c2bcf047
--- /dev/null
+++ b/Libraries/Core/setUpGlobals.js
@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Sets up global variables for React Native.
+ * You can use this module directly, or just require InitializeCore.
+ */
+if (global.GLOBAL === undefined) {
+  global.GLOBAL = global;
+}
+
+if (global.window === undefined) {
+  global.window = global;
+}
+
+// Set up process
+global.process = global.process || {};
+global.process.env = global.process.env || {};
+if (!global.process.env.NODE_ENV) {
+  global.process.env.NODE_ENV = __DEV__ ? 'development' : 'production';
+}
diff --git a/Libraries/Core/setUpRegeneratorRuntime.js b/Libraries/Core/setUpRegeneratorRuntime.js
new file mode 100644
index 00000000000000..26fb440c6d270a
--- /dev/null
+++ b/Libraries/Core/setUpRegeneratorRuntime.js
@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+const {polyfillGlobal} = require('PolyfillFunctions');
+
+/**
+ * Set up regenerator.
+ * You can use this module directly, or just require InitializeCore.
+ */
+polyfillGlobal('regeneratorRuntime', () => {
+  // The require just sets up the global, so make sure when we first
+  // invoke it the global does not exist
+  delete global.regeneratorRuntime;
+
+  // regenerator-runtime/runtime exports the regeneratorRuntime object, so we
+  // can return it safely.
+  return require('regenerator-runtime/runtime'); // flowlint-line untyped-import:off
+});
diff --git a/Libraries/Core/setUpSegmentFetcher.js b/Libraries/Core/setUpSegmentFetcher.js
new file mode 100644
index 00000000000000..440caf380f31ac
--- /dev/null
+++ b/Libraries/Core/setUpSegmentFetcher.js
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Set up SegmentFetcher.
+ * You can use this module directly, or just require InitializeCore.
+ */
+global.__fetchSegment = function(
+  segmentId: number,
+  options: {|+otaBuildNumber: ?string|},
+  callback: (?Error) => void,
+) {
+  const {SegmentFetcher} = require('NativeModules');
+  if (!SegmentFetcher) {
+    throw new Error(
+      'SegmentFetcher is missing. Please ensure that it is ' +
+        'included as a NativeModule.',
+    );
+  }
+
+  SegmentFetcher.fetchSegment(
+    segmentId,
+    options,
+    (errorObject: ?{message: string, code: string}) => {
+      if (errorObject) {
+        const error = new Error(errorObject.message);
+        (error: any).code = errorObject.code; // flowlint-line unclear-type: off
+        callback(error);
+      }
+
+      callback(null);
+    },
+  );
+};
diff --git a/Libraries/Core/setUpSystrace.js b/Libraries/Core/setUpSystrace.js
new file mode 100644
index 00000000000000..36a6bf40c0ff91
--- /dev/null
+++ b/Libraries/Core/setUpSystrace.js
@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Set up Systrace profiling hooks if necessary.
+ * You can use this module directly, or just require InitializeCore.
+ */
+if (global.__RCTProfileIsProfiling) {
+  const Systrace = require('Systrace');
+  Systrace.installReactHook();
+  Systrace.setEnabled(true);
+}
diff --git a/Libraries/Core/setUpTimers.js b/Libraries/Core/setUpTimers.js
new file mode 100644
index 00000000000000..1a95afa8751bed
--- /dev/null
+++ b/Libraries/Core/setUpTimers.js
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+const {polyfillGlobal} = require('PolyfillFunctions');
+
+/**
+ * Set up timers.
+ * You can use this module directly, or just require InitializeCore.
+ */
+const defineLazyTimer = name => {
+  polyfillGlobal(name, () => require('JSTimers')[name]);
+};
+defineLazyTimer('setTimeout');
+defineLazyTimer('setInterval');
+defineLazyTimer('setImmediate');
+defineLazyTimer('clearTimeout');
+defineLazyTimer('clearInterval');
+defineLazyTimer('clearImmediate');
+defineLazyTimer('requestAnimationFrame');
+defineLazyTimer('cancelAnimationFrame');
+defineLazyTimer('requestIdleCallback');
+defineLazyTimer('cancelIdleCallback');
diff --git a/Libraries/Core/setUpXHR.js b/Libraries/Core/setUpXHR.js
new file mode 100644
index 00000000000000..ac528db6d7d50e
--- /dev/null
+++ b/Libraries/Core/setUpXHR.js
@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+const {polyfillGlobal} = require('PolyfillFunctions');
+
+/**
+ * Set up XMLHttpRequest. The native XMLHttpRequest in Chrome dev tools is CORS
+ * aware and won't let you fetch anything from the internet.
+ *
+ * You can use this module directly, or just require InitializeCore.
+ */
+polyfillGlobal('XMLHttpRequest', () => require('XMLHttpRequest'));
+polyfillGlobal('FormData', () => require('FormData'));
+
+polyfillGlobal('fetch', () => require('fetch').fetch); // flowlint-line untyped-import:off
+polyfillGlobal('Headers', () => require('fetch').Headers); // flowlint-line untyped-import:off
+polyfillGlobal('Request', () => require('fetch').Request); // flowlint-line untyped-import:off
+polyfillGlobal('Response', () => require('fetch').Response); // flowlint-line untyped-import:off
+polyfillGlobal('WebSocket', () => require('WebSocket'));
+polyfillGlobal('Blob', () => require('Blob'));
+polyfillGlobal('File', () => require('File'));
+polyfillGlobal('FileReader', () => require('FileReader'));
+polyfillGlobal('URL', () => require('URL'));
diff --git a/Libraries/StyleSheet/ColorPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedColorPropType.js
similarity index 96%
rename from Libraries/StyleSheet/ColorPropType.js
rename to Libraries/DeprecatedPropTypes/DeprecatedColorPropType.js
index 93474c47ae234e..84d3b225a45f33 100644
--- a/Libraries/StyleSheet/ColorPropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedColorPropType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js
new file mode 100644
index 00000000000000..67a016fffc8d24
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedEdgeInsetsPropType.js
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict
+ */
+
+'use strict';
+
+const PropTypes = require('prop-types');
+
+const DeprecatedEdgeInsetsPropType = PropTypes.shape({
+  top: PropTypes.number,
+  left: PropTypes.number,
+  bottom: PropTypes.number,
+  right: PropTypes.number,
+});
+
+module.exports = DeprecatedEdgeInsetsPropType;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js b/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js
new file mode 100644
index 00000000000000..6b8c16b579d23e
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedImagePropType.js
@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
+const DeprecatedImageSourcePropType = require('DeprecatedImageSourcePropType');
+const DeprecatedImageStylePropTypes = require('DeprecatedImageStylePropTypes');
+const DeprecatedStyleSheetPropType = require('DeprecatedStyleSheetPropType');
+const PropTypes = require('prop-types');
+
+module.exports = {
+  style: DeprecatedStyleSheetPropType(DeprecatedImageStylePropTypes),
+  source: DeprecatedImageSourcePropType,
+  defaultSource: PropTypes.oneOfType([
+    PropTypes.shape({
+      uri: PropTypes.string,
+      width: PropTypes.number,
+      height: PropTypes.number,
+      scale: PropTypes.number,
+    }),
+    PropTypes.number,
+  ]),
+
+  accessible: PropTypes.bool,
+
+  accessibilityLabel: PropTypes.node,
+
+  blurRadius: PropTypes.number,
+
+  capInsets: DeprecatedEdgeInsetsPropType,
+
+  resizeMethod: PropTypes.oneOf(['auto', 'resize', 'scale']),
+
+  resizeMode: PropTypes.oneOf([
+    'cover',
+    'contain',
+    'stretch',
+    'repeat',
+    'center',
+  ]),
+
+  testID: PropTypes.string,
+
+  onLayout: PropTypes.func,
+
+  onLoadStart: PropTypes.func,
+
+  onProgress: PropTypes.func,
+
+  onError: PropTypes.func,
+
+  onPartialLoad: PropTypes.func,
+
+  onLoad: PropTypes.func,
+
+  onLoadEnd: PropTypes.func,
+};
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedImageSourcePropType.js b/Libraries/DeprecatedPropTypes/DeprecatedImageSourcePropType.js
new file mode 100644
index 00000000000000..0670023ae73ba2
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedImageSourcePropType.js
@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @no-flow
+ * @format
+ */
+'use strict';
+
+const PropTypes = require('prop-types');
+
+const ImageURISourcePropType = PropTypes.shape({
+  uri: PropTypes.string,
+  bundle: PropTypes.string,
+  method: PropTypes.string,
+  headers: PropTypes.objectOf(PropTypes.string),
+  body: PropTypes.string,
+  cache: PropTypes.oneOf([
+    'default',
+    'reload',
+    'force-cache',
+    'only-if-cached',
+  ]),
+  width: PropTypes.number,
+  height: PropTypes.number,
+  scale: PropTypes.number,
+});
+
+const ImageSourcePropType = PropTypes.oneOfType([
+  ImageURISourcePropType,
+  // Opaque type returned by require('./image.jpg')
+  PropTypes.number,
+  // Multiple sources
+  PropTypes.arrayOf(ImageURISourcePropType),
+]);
+
+module.exports = ImageSourcePropType;
diff --git a/Libraries/Image/ImageStylePropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedImageStylePropTypes.js
similarity index 69%
rename from Libraries/Image/ImageStylePropTypes.js
rename to Libraries/DeprecatedPropTypes/DeprecatedImageStylePropTypes.js
index 54e500994227db..3fbed21da30fe0 100644
--- a/Libraries/Image/ImageStylePropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedImageStylePropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,21 +9,26 @@
  */
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const ImageResizeMode = require('ImageResizeMode');
-const LayoutPropTypes = require('LayoutPropTypes');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedLayoutPropTypes = require('DeprecatedLayoutPropTypes');
 const ReactPropTypes = require('prop-types');
-const ShadowPropTypesIOS = require('ShadowPropTypesIOS');
-const TransformPropTypes = require('TransformPropTypes');
+const DeprecatedShadowPropTypesIOS = require('DeprecatedShadowPropTypesIOS');
+const DeprecatedTransformPropTypes = require('DeprecatedTransformPropTypes');
 
 const ImageStylePropTypes = {
-  ...LayoutPropTypes,
-  ...ShadowPropTypesIOS,
-  ...TransformPropTypes,
-  resizeMode: ReactPropTypes.oneOf(Object.keys(ImageResizeMode)),
+  ...DeprecatedLayoutPropTypes,
+  ...DeprecatedShadowPropTypesIOS,
+  ...DeprecatedTransformPropTypes,
+  resizeMode: ReactPropTypes.oneOf([
+    'center',
+    'contain',
+    'cover',
+    'repeat',
+    'stretch',
+  ]),
   backfaceVisibility: ReactPropTypes.oneOf(['visible', 'hidden']),
-  backgroundColor: ColorPropType,
-  borderColor: ColorPropType,
+  backgroundColor: DeprecatedColorPropType,
+  borderColor: DeprecatedColorPropType,
   borderWidth: ReactPropTypes.number,
   borderRadius: ReactPropTypes.number,
   overflow: ReactPropTypes.oneOf(['visible', 'hidden']),
@@ -31,7 +36,7 @@ const ImageStylePropTypes = {
   /**
    * Changes the color of all the non-transparent pixels to the tintColor.
    */
-  tintColor: ColorPropType,
+  tintColor: DeprecatedColorPropType,
   opacity: ReactPropTypes.number,
   /**
    * When the image has rounded corners, specifying an overlayColor will
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedLayoutPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedLayoutPropTypes.js
new file mode 100644
index 00000000000000..0ebccaa8d07083
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedLayoutPropTypes.js
@@ -0,0 +1,190 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict
+ */
+
+'use strict';
+
+const ReactPropTypes = require('prop-types');
+
+const LayoutPropTypes = {
+  display: ReactPropTypes.oneOf(['none', 'flex']),
+  width: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  height: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  start: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  end: ReactPropTypes.oneOfType([ReactPropTypes.number, ReactPropTypes.string]),
+  top: ReactPropTypes.oneOfType([ReactPropTypes.number, ReactPropTypes.string]),
+  left: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  right: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  bottom: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  minWidth: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  maxWidth: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  minHeight: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  maxHeight: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  margin: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginVertical: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginHorizontal: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginTop: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginBottom: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginLeft: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginRight: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginStart: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  marginEnd: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  padding: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingVertical: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingHorizontal: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingTop: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingBottom: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingLeft: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingRight: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingStart: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  paddingEnd: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  borderWidth: ReactPropTypes.number,
+  borderTopWidth: ReactPropTypes.number,
+  borderStartWidth: ReactPropTypes.number,
+  borderEndWidth: ReactPropTypes.number,
+  borderRightWidth: ReactPropTypes.number,
+  borderBottomWidth: ReactPropTypes.number,
+  borderLeftWidth: ReactPropTypes.number,
+  position: ReactPropTypes.oneOf(['absolute', 'relative']),
+  flexDirection: ReactPropTypes.oneOf([
+    'row',
+    'row-reverse',
+    'column',
+    'column-reverse',
+  ]),
+  flexWrap: ReactPropTypes.oneOf(['wrap', 'nowrap', 'wrap-reverse']),
+  justifyContent: ReactPropTypes.oneOf([
+    'flex-start',
+    'flex-end',
+    'center',
+    'space-between',
+    'space-around',
+    'space-evenly',
+  ]),
+  alignItems: ReactPropTypes.oneOf([
+    'flex-start',
+    'flex-end',
+    'center',
+    'stretch',
+    'baseline',
+  ]),
+  alignSelf: ReactPropTypes.oneOf([
+    'auto',
+    'flex-start',
+    'flex-end',
+    'center',
+    'stretch',
+    'baseline',
+  ]),
+  alignContent: ReactPropTypes.oneOf([
+    'flex-start',
+    'flex-end',
+    'center',
+    'stretch',
+    'space-between',
+    'space-around',
+  ]),
+  overflow: ReactPropTypes.oneOf(['visible', 'hidden', 'scroll']),
+  flex: ReactPropTypes.number,
+  flexGrow: ReactPropTypes.number,
+  flexShrink: ReactPropTypes.number,
+  flexBasis: ReactPropTypes.oneOfType([
+    ReactPropTypes.number,
+    ReactPropTypes.string,
+  ]),
+  aspectRatio: ReactPropTypes.number,
+  zIndex: ReactPropTypes.number,
+  direction: ReactPropTypes.oneOf(['inherit', 'ltr', 'rtl']),
+};
+
+module.exports = LayoutPropTypes;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js
new file mode 100644
index 00000000000000..9ae8c8f9872d5c
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedPointPropType.js
@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict
+ */
+
+'use strict';
+
+const PropTypes = require('prop-types');
+
+const PointPropType = PropTypes.shape({
+  x: PropTypes.number,
+  y: PropTypes.number,
+});
+
+module.exports = PointPropType;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js b/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js
new file mode 100644
index 00000000000000..889b5624938736
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+'use strict';
+
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const ReactPropTypes = require('prop-types');
+
+const DeprecatedShadowPropTypesIOS = {
+  shadowColor: DeprecatedColorPropType,
+  shadowOffset: ReactPropTypes.shape({
+    width: ReactPropTypes.number,
+    height: ReactPropTypes.number,
+  }),
+  shadowOpacity: ReactPropTypes.number,
+  shadowRadius: ReactPropTypes.number,
+};
+
+module.exports = DeprecatedShadowPropTypesIOS;
diff --git a/Libraries/StyleSheet/StyleSheetPropType.js b/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
similarity index 67%
rename from Libraries/StyleSheet/StyleSheetPropType.js
rename to Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
index 97674b9a1e4f33..9cad5470ad7374 100644
--- a/Libraries/StyleSheet/StyleSheetPropType.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedStyleSheetPropType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,13 @@
 
 'use strict';
 
-const createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
+const deprecatedCreateStrictShapeTypeChecker = require('deprecatedCreateStrictShapeTypeChecker');
 const flattenStyle = require('flattenStyle');
 
-function StyleSheetPropType(shape: {
+function DeprecatedStyleSheetPropType(shape: {
   [key: string]: ReactPropsCheckType,
 }): ReactPropsCheckType {
-  const shapePropType = createStrictShapeTypeChecker(shape);
+  const shapePropType = deprecatedCreateStrictShapeTypeChecker(shape);
   return function(props, propName, componentName, location?, ...rest) {
     let newProps = props;
     if (props[propName]) {
@@ -28,4 +28,4 @@ function StyleSheetPropType(shape: {
   };
 }
 
-module.exports = StyleSheetPropType;
+module.exports = DeprecatedStyleSheetPropType;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedTVViewPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTVViewPropTypes.js
new file mode 100644
index 00000000000000..90af60cc27da35
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTVViewPropTypes.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const PropTypes = require('prop-types');
+
+const DeprecatedTVViewPropTypes = {
+  isTVSelectable: PropTypes.bool,
+  hasTVPreferredFocus: PropTypes.bool,
+  tvParallaxProperties: PropTypes.object,
+  tvParallaxShiftDistanceX: PropTypes.number,
+  tvParallaxShiftDistanceY: PropTypes.number,
+  tvParallaxTiltAngle: PropTypes.number,
+  tvParallaxMagnification: PropTypes.number,
+};
+
+module.exports = DeprecatedTVViewPropTypes;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedTextPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTextPropTypes.js
new file mode 100644
index 00000000000000..1723bb56cb6cdd
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTextPropTypes.js
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
+const DeprecatedStyleSheetPropType = require('DeprecatedStyleSheetPropType');
+const PropTypes = require('prop-types');
+const TextStylePropTypes = require('TextStylePropTypes');
+
+const stylePropType = DeprecatedStyleSheetPropType(TextStylePropTypes);
+
+module.exports = {
+  ellipsizeMode: PropTypes.oneOf(['head', 'middle', 'tail', 'clip']),
+  numberOfLines: PropTypes.number,
+  textBreakStrategy: PropTypes.oneOf(['simple', 'highQuality', 'balanced']),
+  onLayout: PropTypes.func,
+  onPress: PropTypes.func,
+  onLongPress: PropTypes.func,
+  pressRetentionOffset: DeprecatedEdgeInsetsPropType,
+  selectable: PropTypes.bool,
+  selectionColor: DeprecatedColorPropType,
+  suppressHighlighting: PropTypes.bool,
+  style: stylePropType,
+  testID: PropTypes.string,
+  nativeID: PropTypes.string,
+  allowFontScaling: PropTypes.bool,
+  maxFontSizeMultiplier: PropTypes.number,
+  accessible: PropTypes.bool,
+  adjustsFontSizeToFit: PropTypes.bool,
+  minimumFontScale: PropTypes.number,
+  disabled: PropTypes.bool,
+};
diff --git a/Libraries/StyleSheet/TransformPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
similarity index 70%
rename from Libraries/StyleSheet/TransformPropTypes.js
rename to Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
index 105df3f073b9ad..a463dcc1cd15db 100644
--- a/Libraries/StyleSheet/TransformPropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedTransformPropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -40,23 +40,7 @@ const DecomposedMatrixPropType = function(
   }
 };
 
-const TransformPropTypes = {
-  /**
-   * `transform` accepts an array of transformation objects. Each object specifies
-   * the property that will be transformed as the key, and the value to use in the
-   * transformation. Objects should not be combined. Use a single key/value pair
-   * per object.
-   *
-   * The rotate transformations require a string so that the transform may be
-   * expressed in degrees (deg) or radians (rad). For example:
-   *
-   * `transform([{ rotateX: '45deg' }, { rotateZ: '0.785398rad' }])`
-   *
-   * The skew transformations require a string so that the transform may be
-   * expressed in degrees (deg). For example:
-   *
-   * `transform([{ skewX: '45deg' }])`
-   */
+const DeprecatedTransformPropTypes = {
   transform: ReactPropTypes.arrayOf(
     ReactPropTypes.oneOfType([
       ReactPropTypes.shape({perspective: ReactPropTypes.number}),
@@ -73,17 +57,8 @@ const TransformPropTypes = {
       ReactPropTypes.shape({skewY: ReactPropTypes.string}),
     ]),
   ),
-
-  /**
-   * Deprecated. Use the transform prop instead.
-   */
   transformMatrix: TransformMatrixPropType,
-  /**
-   * Deprecated. Use the transform prop instead.
-   */
   decomposedMatrix: DecomposedMatrixPropType,
-
-  /* Deprecated transform props used on Android only */
   scaleX: deprecatedPropType(
     ReactPropTypes.number,
     'Use the transform prop instead.',
@@ -106,4 +81,4 @@ const TransformPropTypes = {
   ),
 };
 
-module.exports = TransformPropTypes;
+module.exports = DeprecatedTransformPropTypes;
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedViewAccessibility.js b/Libraries/DeprecatedPropTypes/DeprecatedViewAccessibility.js
new file mode 100644
index 00000000000000..890dd49f0f8672
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedViewAccessibility.js
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict
+ */
+
+'use strict';
+
+module.exports = {
+  DeprecatedAccessibilityTraits: [
+    'none',
+    'button',
+    'link',
+    'header',
+    'search',
+    'image',
+    'selected',
+    'plays',
+    'key',
+    'text',
+    'summary',
+    'disabled',
+    'frequentUpdates',
+    'startsMedia',
+    'adjustable',
+    'allowsDirectInteraction',
+    'pageTurn',
+  ],
+  DeprecatedAccessibilityComponentTypes: [
+    'none',
+    'button',
+    'radiobutton_checked',
+    'radiobutton_unchecked',
+  ],
+  // This must be kept in sync with the AccessibilityRolesMask in RCTViewManager.m
+  DeprecatedAccessibilityRoles: [
+    'none',
+    'button',
+    'link',
+    'search',
+    'image',
+    'keyboardkey',
+    'text',
+    'adjustable',
+    'imagebutton',
+    'header',
+    'summary',
+  ],
+  // This must be kept in sync with the AccessibilityStatesMask in RCTViewManager.m
+  DeprecatedAccessibilityStates: ['selected', 'disabled'],
+};
diff --git a/Libraries/DeprecatedPropTypes/DeprecatedViewPropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedViewPropTypes.js
new file mode 100644
index 00000000000000..0d5b0746c4a3d8
--- /dev/null
+++ b/Libraries/DeprecatedPropTypes/DeprecatedViewPropTypes.js
@@ -0,0 +1,409 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
+const PlatformViewPropTypes = require('PlatformViewPropTypes');
+const PropTypes = require('prop-types');
+const DeprecatedStyleSheetPropType = require('DeprecatedStyleSheetPropType');
+const DeprecatedViewStylePropTypes = require('DeprecatedViewStylePropTypes');
+
+const {
+  DeprecatedAccessibilityComponentTypes,
+  DeprecatedAccessibilityTraits,
+  DeprecatedAccessibilityRoles,
+  DeprecatedAccessibilityStates,
+} = require('DeprecatedViewAccessibility');
+
+const stylePropType = DeprecatedStyleSheetPropType(
+  DeprecatedViewStylePropTypes,
+);
+
+module.exports = {
+  /**
+   * When `true`, indicates that the view is an accessibility element.
+   * By default, all the touchable elements are accessible.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessible
+   */
+  accessible: PropTypes.bool,
+
+  /**
+   * Overrides the text that's read by the screen reader when the user interacts
+   * with the element. By default, the label is constructed by traversing all
+   * the children and accumulating all the `Text` nodes separated by space.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilitylabel
+   */
+  accessibilityLabel: PropTypes.node,
+
+  /**
+   * An accessibility hint helps users understand what will happen when they perform
+   * an action on the accessibility element when that result is not obvious from the
+   * accessibility label.
+   *
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilityHint
+   */
+  accessibilityHint: PropTypes.string,
+
+  /**
+   * Provides an array of custom actions available for accessibility.
+   *
+   * @platform ios
+   */
+  accessibilityActions: PropTypes.arrayOf(PropTypes.string),
+
+  /**
+   * Prevents view from being inverted if set to true and color inversion is turned on.
+   *
+   * @platform ios
+   */
+  accessibilityIgnoresInvertColors: PropTypes.bool,
+
+  /**
+   * Indicates to accessibility services to treat UI component like a
+   * native one. Works for Android only.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilitycomponenttype
+   */
+  accessibilityComponentType: PropTypes.oneOf(
+    DeprecatedAccessibilityComponentTypes,
+  ),
+
+  /**
+   * Indicates to accessibility services to treat UI component like a specific role.
+   */
+  accessibilityRole: PropTypes.oneOf(DeprecatedAccessibilityRoles),
+
+  /**
+   * Indicates to accessibility services that UI Component is in a specific State.
+   */
+  accessibilityStates: PropTypes.arrayOf(
+    PropTypes.oneOf(DeprecatedAccessibilityStates),
+  ),
+  /**
+   * Indicates to accessibility services whether the user should be notified
+   * when this view changes. Works for Android API >= 19 only.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilityliveregion
+   */
+  accessibilityLiveRegion: PropTypes.oneOf(['none', 'polite', 'assertive']),
+
+  /**
+   * Controls how view is important for accessibility which is if it
+   * fires accessibility events and if it is reported to accessibility services
+   * that query the screen. Works for Android only.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#importantforaccessibility
+   */
+  importantForAccessibility: PropTypes.oneOf([
+    'auto',
+    'yes',
+    'no',
+    'no-hide-descendants',
+  ]),
+
+  /**
+   * Provides additional traits to screen reader. By default no traits are
+   * provided unless specified otherwise in element.
+   *
+   * You can provide one trait or an array of many traits.
+   *
+   * @platform ios
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilitytraits
+   */
+  accessibilityTraits: PropTypes.oneOfType([
+    PropTypes.oneOf(DeprecatedAccessibilityTraits),
+    PropTypes.arrayOf(PropTypes.oneOf(DeprecatedAccessibilityTraits)),
+  ]),
+
+  /**
+   * A value indicating whether VoiceOver should ignore the elements
+   * within views that are siblings of the receiver.
+   * Default is `false`.
+   *
+   * @platform ios
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilityviewismodal
+   */
+  accessibilityViewIsModal: PropTypes.bool,
+
+  /**
+   * A value indicating whether the accessibility elements contained within
+   * this accessibility element are hidden.
+   *
+   * @platform ios
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#accessibilityElementsHidden
+   */
+  accessibilityElementsHidden: PropTypes.bool,
+
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs an accessibility custom action.
+   *
+   * @platform ios
+   */
+  onAccessibilityAction: PropTypes.func,
+
+  /**
+   * When `accessible` is true, the system will try to invoke this function
+   * when the user performs accessibility tap gesture.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onaccessibilitytap
+   */
+  onAccessibilityTap: PropTypes.func,
+
+  /**
+   * When `accessible` is `true`, the system will invoke this function when the
+   * user performs the magic tap gesture.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onmagictap
+   */
+  onMagicTap: PropTypes.func,
+
+  /**
+   * Used to locate this view in end-to-end tests.
+   *
+   * > This disables the 'layout-only view removal' optimization for this view!
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#testid
+   */
+  testID: PropTypes.string,
+
+  /**
+   * Used to locate this view from native classes.
+   *
+   * > This disables the 'layout-only view removal' optimization for this view!
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#nativeid
+   */
+  nativeID: PropTypes.string,
+
+  /**
+   * For most touch interactions, you'll simply want to wrap your component in
+   * `TouchableHighlight` or `TouchableOpacity`. Check out `Touchable.js`,
+   * `ScrollResponder.js` and `ResponderEventPlugin.js` for more discussion.
+   */
+
+  /**
+   * The View is now responding for touch events. This is the time to highlight
+   * and show the user what is happening.
+   *
+   * `View.props.onResponderGrant: (event) => {}`, where `event` is a synthetic
+   * touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onrespondergrant
+   */
+  onResponderGrant: PropTypes.func,
+
+  /**
+   * The user is moving their finger.
+   *
+   * `View.props.onResponderMove: (event) => {}`, where `event` is a synthetic
+   * touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onrespondermove
+   */
+  onResponderMove: PropTypes.func,
+
+  /**
+   * Another responder is already active and will not release it to that `View`
+   * asking to be the responder.
+   *
+   * `View.props.onResponderReject: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderreject
+   */
+  onResponderReject: PropTypes.func,
+
+  /**
+   * Fired at the end of the touch.
+   *
+   * `View.props.onResponderRelease: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderrelease
+   */
+  onResponderRelease: PropTypes.func,
+
+  /**
+   * The responder has been taken from the `View`. Might be taken by other
+   * views after a call to `onResponderTerminationRequest`, or might be taken
+   * by the OS without asking (e.g., happens with control center/ notification
+   * center on iOS)
+   *
+   * `View.props.onResponderTerminate: (event) => {}`, where `event` is a
+   * synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminate
+   */
+  onResponderTerminate: PropTypes.func,
+
+  /**
+   * Some other `View` wants to become responder and is asking this `View` to
+   * release its responder. Returning `true` allows its release.
+   *
+   * `View.props.onResponderTerminationRequest: (event) => {}`, where `event`
+   * is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onresponderterminationrequest
+   */
+  onResponderTerminationRequest: PropTypes.func,
+
+  /**
+   * Does this view want to become responder on the start of a touch?
+   *
+   * `View.props.onStartShouldSetResponder: (event) => [true | false]`, where
+   * `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetresponder
+   */
+  onStartShouldSetResponder: PropTypes.func,
+
+  /**
+   * If a parent `View` wants to prevent a child `View` from becoming responder
+   * on a touch start, it should have this handler which returns `true`.
+   *
+   * `View.props.onStartShouldSetResponderCapture: (event) => [true | false]`,
+   * where `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onstartshouldsetrespondercapture
+   */
+  onStartShouldSetResponderCapture: PropTypes.func,
+
+  /**
+   * Does this view want to "claim" touch responsiveness? This is called for
+   * every touch move on the `View` when it is not the responder.
+   *
+   * `View.props.onMoveShouldSetResponder: (event) => [true | false]`, where
+   * `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onmoveshouldsetresponder
+   */
+  onMoveShouldSetResponder: PropTypes.func,
+
+  /**
+   * If a parent `View` wants to prevent a child `View` from becoming responder
+   * on a move, it should have this handler which returns `true`.
+   *
+   * `View.props.onMoveShouldSetResponderCapture: (event) => [true | false]`,
+   * where `event` is a synthetic touch event as described above.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onMoveShouldsetrespondercapture
+   */
+  onMoveShouldSetResponderCapture: PropTypes.func,
+
+  /**
+   * This defines how far a touch event can start away from the view.
+   * Typical interface guidelines recommend touch targets that are at least
+   * 30 - 40 points/density-independent pixels.
+   *
+   * > The touch area never extends past the parent view bounds and the Z-index
+   * > of sibling views always takes precedence if a touch hits two overlapping
+   * > views.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#hitslop
+   */
+  hitSlop: DeprecatedEdgeInsetsPropType,
+
+  /**
+   * Invoked on mount and layout changes with:
+   *
+   * `{nativeEvent: { layout: {x, y, width, height}}}`
+   *
+   * This event is fired immediately once the layout has been calculated, but
+   * the new layout may not yet be reflected on the screen at the time the
+   * event is received, especially if a layout animation is in progress.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#onlayout
+   */
+  onLayout: PropTypes.func,
+
+  /**
+   * Controls whether the `View` can be the target of touch events.
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#pointerevents
+   */
+  pointerEvents: PropTypes.oneOf(['box-none', 'none', 'box-only', 'auto']),
+
+  /**
+   * See http://facebook.github.io/react-native/docs/style.html
+   */
+  style: stylePropType,
+
+  /**
+   * This is a special performance property exposed by `RCTView` and is useful
+   * for scrolling content when there are many subviews, most of which are
+   * offscreen. For this property to be effective, it must be applied to a
+   * view that contains many subviews that extend outside its bound. The
+   * subviews must also have `overflow: hidden`, as should the containing view
+   * (or one of its superviews).
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#removeclippedsubviews
+   */
+  removeClippedSubviews: PropTypes.bool,
+
+  /**
+   * Whether this `View` should render itself (and all of its children) into a
+   * single hardware texture on the GPU.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#rendertohardwaretextureandroid
+   */
+  renderToHardwareTextureAndroid: PropTypes.bool,
+
+  /**
+   * Whether this `View` should be rendered as a bitmap before compositing.
+   *
+   * @platform ios
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#shouldrasterizeios
+   */
+  shouldRasterizeIOS: PropTypes.bool,
+
+  /**
+   * Views that are only used to layout their children or otherwise don't draw
+   * anything may be automatically removed from the native hierarchy as an
+   * optimization. Set this property to `false` to disable this optimization and
+   * ensure that this `View` exists in the native view hierarchy.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#collapsable
+   */
+  collapsable: PropTypes.bool,
+
+  /**
+   * Whether this `View` needs to rendered offscreen and composited with an
+   * alpha in order to preserve 100% correct colors and blending behavior.
+   *
+   * @platform android
+   *
+   * See http://facebook.github.io/react-native/docs/view.html#needsoffscreenalphacompositing
+   */
+  needsOffscreenAlphaCompositing: PropTypes.bool,
+
+  /**
+   * Any additional platform-specific view prop types, or prop type overrides.
+   */
+  ...PlatformViewPropTypes,
+};
diff --git a/Libraries/Components/View/ViewStylePropTypes.js b/Libraries/DeprecatedPropTypes/DeprecatedViewStylePropTypes.js
similarity index 63%
rename from Libraries/Components/View/ViewStylePropTypes.js
rename to Libraries/DeprecatedPropTypes/DeprecatedViewStylePropTypes.js
index 8f690fb32f6891..546da9cee33e8d 100644
--- a/Libraries/Components/View/ViewStylePropTypes.js
+++ b/Libraries/DeprecatedPropTypes/DeprecatedViewStylePropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,28 +10,28 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const LayoutPropTypes = require('LayoutPropTypes');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedLayoutPropTypes = require('DeprecatedLayoutPropTypes');
 const ReactPropTypes = require('prop-types');
-const ShadowPropTypesIOS = require('ShadowPropTypesIOS');
-const TransformPropTypes = require('TransformPropTypes');
+const DeprecatedShadowPropTypesIOS = require('DeprecatedShadowPropTypesIOS');
+const DeprecatedTransformPropTypes = require('DeprecatedTransformPropTypes');
 
 /**
  * Warning: Some of these properties may not be supported in all releases.
  */
-const ViewStylePropTypes = {
-  ...LayoutPropTypes,
-  ...ShadowPropTypesIOS,
-  ...TransformPropTypes,
+const DeprecatedViewStylePropTypes = {
+  ...DeprecatedLayoutPropTypes,
+  ...DeprecatedShadowPropTypesIOS,
+  ...DeprecatedTransformPropTypes,
   backfaceVisibility: ReactPropTypes.oneOf(['visible', 'hidden']),
-  backgroundColor: ColorPropType,
-  borderColor: ColorPropType,
-  borderTopColor: ColorPropType,
-  borderRightColor: ColorPropType,
-  borderBottomColor: ColorPropType,
-  borderLeftColor: ColorPropType,
-  borderStartColor: ColorPropType,
-  borderEndColor: ColorPropType,
+  backgroundColor: DeprecatedColorPropType,
+  borderColor: DeprecatedColorPropType,
+  borderTopColor: DeprecatedColorPropType,
+  borderRightColor: DeprecatedColorPropType,
+  borderBottomColor: DeprecatedColorPropType,
+  borderLeftColor: DeprecatedColorPropType,
+  borderStartColor: DeprecatedColorPropType,
+  borderEndColor: DeprecatedColorPropType,
   borderRadius: ReactPropTypes.number,
   borderTopLeftRadius: ReactPropTypes.number,
   borderTopRightRadius: ReactPropTypes.number,
@@ -58,4 +58,4 @@ const ViewStylePropTypes = {
   elevation: ReactPropTypes.number,
 };
 
-module.exports = ViewStylePropTypes;
+module.exports = DeprecatedViewStylePropTypes;
diff --git a/Libraries/Utilities/createStrictShapeTypeChecker.js b/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
similarity index 92%
rename from Libraries/Utilities/createStrictShapeTypeChecker.js
rename to Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
index ad097e9682344e..524e605ca05b72 100644
--- a/Libraries/Utilities/createStrictShapeTypeChecker.js
+++ b/Libraries/DeprecatedPropTypes/deprecatedCreateStrictShapeTypeChecker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,7 +13,7 @@
 const invariant = require('fbjs/lib/invariant');
 const merge = require('merge');
 
-function createStrictShapeTypeChecker(shapeTypes: {
+function deprecatedCreateStrictShapeTypeChecker(shapeTypes: {
   [key: string]: ReactPropsCheckType,
 }): ReactPropsChainableTypeChecker {
   function checkType(
@@ -83,4 +83,4 @@ function createStrictShapeTypeChecker(shapeTypes: {
   return chainedCheckType;
 }
 
-module.exports = createStrictShapeTypeChecker;
+module.exports = deprecatedCreateStrictShapeTypeChecker;
diff --git a/Libraries/EventEmitter/MissingNativeEventEmitterShim.js b/Libraries/EventEmitter/MissingNativeEventEmitterShim.js
index 562964b85f4cf4..1b9a51c708a637 100644
--- a/Libraries/EventEmitter/MissingNativeEventEmitterShim.js
+++ b/Libraries/EventEmitter/MissingNativeEventEmitterShim.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/EventEmitter/NativeEventEmitter.js b/Libraries/EventEmitter/NativeEventEmitter.js
index 8f8658c14e85a3..4047b6d06dc85d 100644
--- a/Libraries/EventEmitter/NativeEventEmitter.js
+++ b/Libraries/EventEmitter/NativeEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/EventEmitter/RCTDeviceEventEmitter.js b/Libraries/EventEmitter/RCTDeviceEventEmitter.js
index b0977f219abc25..342aa733bf08ff 100644
--- a/Libraries/EventEmitter/RCTDeviceEventEmitter.js
+++ b/Libraries/EventEmitter/RCTDeviceEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/EventEmitter/RCTEventEmitter.js b/Libraries/EventEmitter/RCTEventEmitter.js
index 1a51905ba20d1e..f84bca058ed366 100644
--- a/Libraries/EventEmitter/RCTEventEmitter.js
+++ b/Libraries/EventEmitter/RCTEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/EventEmitter/RCTNativeAppEventEmitter.js b/Libraries/EventEmitter/RCTNativeAppEventEmitter.js
index fcf5ae86438887..2d302c014feebb 100644
--- a/Libraries/EventEmitter/RCTNativeAppEventEmitter.js
+++ b/Libraries/EventEmitter/RCTNativeAppEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js b/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js
index e822b72c73c192..e34e60e2e9f201 100644
--- a/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js
+++ b/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Experimental/Incremental.js b/Libraries/Experimental/Incremental.js
index cfd0c69fd03cfe..76d8ff902680ab 100644
--- a/Libraries/Experimental/Incremental.js
+++ b/Libraries/Experimental/Incremental.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -90,14 +90,12 @@ export type Props = {
    * Tags instances and associated tasks for easier debugging.
    */
   name: string,
-  children?: any,
-};
-type DefaultProps = {
-  name: string,
+  children: React.Node,
 };
 type State = {
   doIncrementalRender: boolean,
 };
+
 class Incremental extends React.Component<Props, State> {
   props: Props;
   state: State;
diff --git a/Libraries/Experimental/IncrementalExample.js b/Libraries/Experimental/IncrementalExample.js
index 3cc441fff38591..e63f59a996f974 100644
--- a/Libraries/Experimental/IncrementalExample.js
+++ b/Libraries/Experimental/IncrementalExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Experimental/IncrementalGroup.js b/Libraries/Experimental/IncrementalGroup.js
index af1a7ad63ddb79..03421e92c58f4c 100644
--- a/Libraries/Experimental/IncrementalGroup.js
+++ b/Libraries/Experimental/IncrementalGroup.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Experimental/IncrementalPresenter.js b/Libraries/Experimental/IncrementalPresenter.js
index 9927179d173966..784878f93468d4 100644
--- a/Libraries/Experimental/IncrementalPresenter.js
+++ b/Libraries/Experimental/IncrementalPresenter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,13 +11,13 @@
 'use strict';
 
 const IncrementalGroup = require('IncrementalGroup');
-const React = require('React');
 const PropTypes = require('prop-types');
+const React = require('React');
 const View = require('View');
 
-const ViewPropTypes = require('ViewPropTypes');
-
 import type {Context} from 'Incremental';
+import type {ViewStyleProp} from 'StyleSheet';
+import type {LayoutEvent} from 'CoreEventTypes';
 
 /**
  * WARNING: EXPERIMENTAL. Breaking changes will probably happen a lot and will
@@ -31,25 +31,19 @@ import type {Context} from 'Incremental';
  *
  * See Incremental.js for more info.
  */
-type Props = {
+type Props = $ReadOnly<{|
   name: string,
   disabled?: boolean,
-  onDone?: () => void,
-  onLayout?: (event: Object) => void,
-  style?: mixed,
-  children?: any,
-};
+  onDone?: () => mixed,
+  onLayout?: (event: LayoutEvent) => mixed,
+  style?: ViewStyleProp,
+  children?: React.Node,
+|}>;
+
 class IncrementalPresenter extends React.Component<Props> {
   context: Context;
   _isDone: boolean;
 
-  static propTypes = {
-    name: PropTypes.string,
-    disabled: PropTypes.bool,
-    onDone: PropTypes.func,
-    onLayout: PropTypes.func,
-    style: ViewPropTypes.style,
-  };
   static contextTypes = {
     incrementalGroup: PropTypes.object,
     incrementalGroupEnabled: PropTypes.bool,
@@ -74,14 +68,15 @@ class IncrementalPresenter extends React.Component<Props> {
     this.props.onDone && this.props.onDone();
   }
   render() {
+    let style: ViewStyleProp;
     if (
       this.props.disabled !== true &&
       this.context.incrementalGroupEnabled !== false &&
       !this._isDone
     ) {
-      var style = [this.props.style, {opacity: 0, position: 'absolute'}];
+      style = [this.props.style, {opacity: 0, position: 'absolute'}];
     } else {
-      var style = this.props.style;
+      style = this.props.style;
     }
     return (
       <IncrementalGroup
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableFlatList.js b/Libraries/Experimental/SwipeableRow/SwipeableFlatList.js
index c03bbf09252df2..071ee6cdf6e3f5 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableFlatList.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableFlatList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,28 +12,35 @@
 import type {Props as FlatListProps} from 'FlatList';
 import type {renderItemType} from 'VirtualizedList';
 
-const PropTypes = require('prop-types');
 const React = require('React');
 const SwipeableRow = require('SwipeableRow');
 const FlatList = require('FlatList');
 
+// TODO: Make this $ReadOnly and Exact. Will require doing the same to the props in
+//       Libraries/Lists/*
 type SwipableListProps = {
   /**
    * To alert the user that swiping is possible, the first row can bounce
    * on component mount.
    */
   bounceFirstRowOnMount: boolean,
-  // Maximum distance to open to after a swipe
+
+  /**
+   * Maximum distance to open to after a swipe
+   */
   maxSwipeDistance: number | (Object => number),
-  // Callback method to render the view that will be unveiled on swipe
+
+  /**
+   * Callback method to render the view that will be unveiled on swipe
+   */
   renderQuickActions: renderItemType,
 };
 
 type Props<ItemT> = SwipableListProps & FlatListProps<ItemT>;
 
-type State = {
+type State = {|
   openRowKey: ?string,
-};
+|};
 
 /**
  * A container component that renders multiple SwipeableRow's in a FlatList
@@ -53,29 +60,9 @@ type State = {
  */
 
 class SwipeableFlatList<ItemT> extends React.Component<Props<ItemT>, State> {
-  props: Props<ItemT>;
-  state: State;
-
   _flatListRef: ?FlatList<ItemT> = null;
   _shouldBounceFirstRowOnMount: boolean = false;
 
-  static propTypes = {
-    ...FlatList.propTypes,
-
-    /**
-     * To alert the user that swiping is possible, the first row can bounce
-     * on component mount.
-     */
-    bounceFirstRowOnMount: PropTypes.bool.isRequired,
-
-    // Maximum distance to open to after a swipe
-    maxSwipeDistance: PropTypes.oneOfType([PropTypes.number, PropTypes.func])
-      .isRequired,
-
-    // Callback method to render the view that will be unveiled on swipe
-    renderQuickActions: PropTypes.func.isRequired,
-  };
-
   static defaultProps = {
     ...FlatList.defaultProps,
     bounceFirstRowOnMount: true,
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableListView.js b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
index bae4eb5f2ff846..3189b728a7962a 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableListView.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,30 +11,53 @@
 'use strict';
 
 const ListView = require('ListView');
-const PropTypes = require('prop-types');
 const React = require('React');
 const SwipeableListViewDataSource = require('SwipeableListViewDataSource');
 const SwipeableRow = require('SwipeableRow');
 
-type DefaultProps = {
-  bounceFirstRowOnMount: boolean,
-  renderQuickActions: Function,
-};
+type ListViewProps = React.ElementConfig<typeof ListView>;
+
+type Props = $ReadOnly<{|
+  ...ListViewProps,
 
-type Props = {
+  /**
+   * To alert the user that swiping is possible, the first row can bounce
+   * on component mount.
+   */
   bounceFirstRowOnMount: boolean,
+  /**
+   * Use `SwipeableListView.getNewDataSource()` to get a data source to use,
+   * then use it just like you would a normal ListView data source
+   */
   dataSource: SwipeableListViewDataSource,
+  /**
+   * Maximum distance to open to after a swipe
+   */
   maxSwipeDistance:
     | number
-    | ((rowData: any, sectionID: string, rowID: string) => number),
+    | ((rowData: Object, sectionID: string, rowID: string) => number),
   onScroll?: ?Function,
-  renderRow: Function,
-  renderQuickActions: Function,
-};
+  /**
+   * Callback method to render the swipeable view
+   */
+  renderRow: (
+    rowData: Object,
+    sectionID: string,
+    rowID: string,
+  ) => React.Element<any>,
+  /**
+   * Callback method to render the view that will be unveiled on swipe
+   */
+  renderQuickActions: (
+    rowData: Object,
+    sectionID: string,
+    rowID: string,
+  ) => ?React.Element<any>,
+|}>;
 
-type State = {
+type State = {|
   dataSource: Object,
-};
+|};
 
 /**
  * A container component that renders multiple SwipeableRow's in a ListView
@@ -70,26 +93,6 @@ class SwipeableListView extends React.Component<Props, State> {
     });
   }
 
-  static propTypes = {
-    /**
-     * To alert the user that swiping is possible, the first row can bounce
-     * on component mount.
-     */
-    bounceFirstRowOnMount: PropTypes.bool.isRequired,
-    /**
-     * Use `SwipeableListView.getNewDataSource()` to get a data source to use,
-     * then use it just like you would a normal ListView data source
-     */
-    dataSource: PropTypes.instanceOf(SwipeableListViewDataSource).isRequired,
-    // Maximum distance to open to after a swipe
-    maxSwipeDistance: PropTypes.oneOfType([PropTypes.number, PropTypes.func])
-      .isRequired,
-    // Callback method to render the swipeable view
-    renderRow: PropTypes.func.isRequired,
-    // Callback method to render the view that will be unveiled on swipe
-    renderQuickActions: PropTypes.func.isRequired,
-  };
-
   static defaultProps = {
     bounceFirstRowOnMount: false,
     renderQuickActions: () => null,
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableListViewDataSource.js b/Libraries/Experimental/SwipeableRow/SwipeableListViewDataSource.js
index 6c409a9acad1c4..38e03c66140d0f 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableListViewDataSource.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableListViewDataSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableQuickActionButton.js b/Libraries/Experimental/SwipeableRow/SwipeableQuickActionButton.js
index f7067fc8de1c08..278af853bd8a92 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableQuickActionButton.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableQuickActionButton.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,12 @@
 
 'use strict';
 
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
 const Image = require('Image');
 const React = require('React');
 const Text = require('Text');
 const TouchableHighlight = require('TouchableHighlight');
 const View = require('View');
-const ViewPropTypes = require('ViewPropTypes');
 
 import type {ImageSource} from 'ImageSource';
 
@@ -28,13 +28,22 @@ class SwipeableQuickActionButton extends React.Component<{
   accessibilityLabel?: string,
   accessibilityHint?: string, // TODO(OSS Candidate ISS#2710739)
   imageSource?: ?(ImageSource | number),
-  imageStyle?: ?ViewPropTypes.style,
+  /* $FlowFixMe(>=0.82.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.82 was deployed. To see the error delete this comment
+   * and run Flow. */
+  imageStyle?: ?DeprecatedViewPropTypes.style,
   mainView?: ?React.Node,
   onPress?: Function,
-  style?: ?ViewPropTypes.style,
+  /* $FlowFixMe(>=0.82.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.82 was deployed. To see the error delete this comment
+   * and run Flow. */
+  style?: ?DeprecatedViewPropTypes.style,
   testID?: string,
   text?: ?(string | Object | Array<string | Object>),
-  textStyle?: ?ViewPropTypes.style,
+  /* $FlowFixMe(>=0.82.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.82 was deployed. To see the error delete this comment
+   * and run Flow. */
+  textStyle?: ?DeprecatedViewPropTypes.style,
 }> {
   render(): React.Node {
     if (!this.props.imageSource && !this.props.text && !this.props.mainView) {
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableQuickActions.js b/Libraries/Experimental/SwipeableRow/SwipeableQuickActions.js
index 8178770c882d29..c97f77648af76f 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableQuickActions.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableQuickActions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,12 @@ const React = require('React');
 const StyleSheet = require('StyleSheet');
 const View = require('View');
 
-const ViewPropTypes = require('ViewPropTypes');
+import type {ViewStyleProp} from 'StyleSheet';
+
+type Props = $ReadOnly<{|
+  style?: ?ViewStyleProp,
+  children: React.Node,
+|}>;
 
 /**
  * A thin wrapper around standard quick action buttons that can, if the user
@@ -26,13 +31,8 @@ const ViewPropTypes = require('ViewPropTypes');
  *   <SwipeableQuickActionButton {..props} />
  * </SwipeableQuickActions>
  */
-class SwipeableQuickActions extends React.Component<{style?: $FlowFixMe}> {
-  static propTypes = {
-    style: ViewPropTypes.style,
-  };
-
+class SwipeableQuickActions extends React.Component<Props> {
   render(): React.Node {
-    // $FlowFixMe found when converting React.createClass to ES6
     const children = this.props.children;
     let buttons = [];
 
@@ -41,8 +41,7 @@ class SwipeableQuickActions extends React.Component<{style?: $FlowFixMe}> {
       for (let i = 0; i < children.length; i++) {
         buttons.push(children[i]);
 
-        // $FlowFixMe found when converting React.createClass to ES6
-        if (i < this.props.children.length - 1) {
+        if (i < children.length - 1) {
           // Not last button
           buttons.push(<View key={i} style={styles.divider} />);
         }
diff --git a/Libraries/Experimental/SwipeableRow/SwipeableRow.js b/Libraries/Experimental/SwipeableRow/SwipeableRow.js
index 3cbeb3d6ca2558..76eb13dcfc78c3 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableRow.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableRow.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,17 +14,14 @@ const Animated = require('Animated');
 const I18nManager = require('I18nManager');
 const PanResponder = require('PanResponder');
 const React = require('React');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const TimerMixin = require('react-timer-mixin');
 const View = require('View');
 
-const createReactClass = require('create-react-class');
 const emptyFunction = require('fbjs/lib/emptyFunction');
 
+import type {LayoutEvent, PressEvent} from 'CoreEventTypes';
+import type {GestureState} from 'PanResponder';
+
 const IS_RTL = I18nManager.isRTL;
 
 // NOTE: Eventually convert these consts to an input object of configurations
@@ -56,21 +53,28 @@ const RIGHT_SWIPE_BOUNCE_BACK_DURATION = 300;
  * how far the finger swipes, and not the actual animation distance.
  */
 const RIGHT_SWIPE_THRESHOLD = 30 * SLOW_SPEED_SWIPE_FACTOR;
+const DEFAULT_SWIPE_THRESHOLD = 30;
 
 type Props = $ReadOnly<{|
   children?: ?React.Node,
   isOpen?: ?boolean,
   maxSwipeDistance?: ?number,
-  onClose?: ?Function,
-  onOpen?: ?Function,
-  onSwipeEnd?: ?Function,
-  onSwipeStart?: ?Function,
+  onClose?: ?() => void,
+  onOpen?: ?() => void,
+  onSwipeEnd?: ?() => void,
+  onSwipeStart?: ?() => void,
   preventSwipeRight?: ?boolean,
   shouldBounceOnMount?: ?boolean,
   slideoutView?: ?React.Node,
   swipeThreshold?: ?number,
 |}>;
 
+type State = {
+  currentLeft: Animated.Value,
+  isSwipeableViewRendered: boolean,
+  rowHeight: ?number,
+};
+
 /**
  * Creates a swipable row that allows taps on the main item and a custom View
  * on the item hidden behind the row. Typically this should be used in
@@ -78,75 +82,98 @@ type Props = $ReadOnly<{|
  * used in a normal ListView. See the renderRow for SwipeableListView to see how
  * to use this component separately.
  */
-const SwipeableRow = createReactClass({
-  displayName: 'SwipeableRow',
-  _panResponder: {},
-  _previousLeft: CLOSED_LEFT_POSITION,
-
-  mixins: [TimerMixin],
-
-  propTypes: {
-    children: PropTypes.any,
-    isOpen: PropTypes.bool,
-    preventSwipeRight: PropTypes.bool,
-    maxSwipeDistance: PropTypes.number.isRequired,
-    onOpen: PropTypes.func.isRequired,
-    onClose: PropTypes.func.isRequired,
-    onSwipeEnd: PropTypes.func.isRequired,
-    onSwipeStart: PropTypes.func.isRequired,
-    // Should bounce the row on mount
-    shouldBounceOnMount: PropTypes.bool,
-    /**
-     * A ReactElement that is unveiled when the user swipes
-     */
-    slideoutView: PropTypes.node.isRequired,
-    /**
-     * The minimum swipe distance required before fully animating the swipe. If
-     * the user swipes less than this distance, the item will return to its
-     * previous (open/close) position.
-     */
-    swipeThreshold: PropTypes.number.isRequired,
-  },
+class SwipeableRow extends React.Component<Props, State> {
+  _handleMoveShouldSetPanResponderCapture = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): boolean => {
+    // Decides whether a swipe is responded to by this component or its child
+    return gestureState.dy < 10 && this._isValidSwipe(gestureState);
+  };
 
-  getInitialState(): Object {
-    return {
-      currentLeft: new Animated.Value(this._previousLeft),
-      /**
-       * In order to render component A beneath component B, A must be rendered
-       * before B. However, this will cause "flickering", aka we see A briefly
-       * then B. To counter this, _isSwipeableViewRendered flag is used to set
-       * component A to be transparent until component B is loaded.
-       */
-      isSwipeableViewRendered: false,
-      rowHeight: (null: ?number),
-    };
-  },
+  _handlePanResponderGrant = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): void => {};
 
-  getDefaultProps(): Object {
-    return {
-      isOpen: false,
-      preventSwipeRight: false,
-      maxSwipeDistance: 0,
-      onOpen: emptyFunction,
-      onClose: emptyFunction,
-      onSwipeEnd: emptyFunction,
-      onSwipeStart: emptyFunction,
-      swipeThreshold: 30,
-    };
-  },
+  _handlePanResponderMove = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): void => {
+    if (this._isSwipingExcessivelyRightFromClosedPosition(gestureState)) {
+      return;
+    }
 
-  UNSAFE_componentWillMount(): void {
-    this._panResponder = PanResponder.create({
-      onMoveShouldSetPanResponderCapture: this
-        ._handleMoveShouldSetPanResponderCapture,
-      onPanResponderGrant: this._handlePanResponderGrant,
-      onPanResponderMove: this._handlePanResponderMove,
-      onPanResponderRelease: this._handlePanResponderEnd,
-      onPanResponderTerminationRequest: this._onPanResponderTerminationRequest,
-      onPanResponderTerminate: this._handlePanResponderEnd,
-      onShouldBlockNativeResponder: (event, gestureState) => false,
-    });
-  },
+    this.props.onSwipeStart && this.props.onSwipeStart();
+
+    if (this._isSwipingRightFromClosed(gestureState)) {
+      this._swipeSlowSpeed(gestureState);
+    } else {
+      this._swipeFullSpeed(gestureState);
+    }
+  };
+
+  _onPanResponderTerminationRequest = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): boolean => {
+    return false;
+  };
+
+  _handlePanResponderEnd = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): void => {
+    const horizontalDistance = IS_RTL ? -gestureState.dx : gestureState.dx;
+    if (this._isSwipingRightFromClosed(gestureState)) {
+      this.props.onOpen && this.props.onOpen();
+      this._animateBounceBack(RIGHT_SWIPE_BOUNCE_BACK_DURATION);
+    } else if (this._shouldAnimateRemainder(gestureState)) {
+      if (horizontalDistance < 0) {
+        // Swiped left
+        this.props.onOpen && this.props.onOpen();
+        this._animateToOpenPositionWith(gestureState.vx, horizontalDistance);
+      } else {
+        // Swiped right
+        this.props.onClose && this.props.onClose();
+        this._animateToClosedPosition();
+      }
+    } else {
+      if (this._previousLeft === CLOSED_LEFT_POSITION) {
+        this._animateToClosedPosition();
+      } else {
+        this._animateToOpenPosition();
+      }
+    }
+
+    this.props.onSwipeEnd && this.props.onSwipeEnd();
+  };
+
+  _panResponder = PanResponder.create({
+    onMoveShouldSetPanResponderCapture: this
+      ._handleMoveShouldSetPanResponderCapture,
+    onPanResponderGrant: this._handlePanResponderGrant,
+    onPanResponderMove: this._handlePanResponderMove,
+    onPanResponderRelease: this._handlePanResponderEnd,
+    onPanResponderTerminationRequest: this._onPanResponderTerminationRequest,
+    onPanResponderTerminate: this._handlePanResponderEnd,
+    onShouldBlockNativeResponder: (event, gestureState) => false,
+  });
+
+  _previousLeft = CLOSED_LEFT_POSITION;
+  _timeoutID: ?TimeoutID = null;
+
+  state = {
+    currentLeft: new Animated.Value(this._previousLeft),
+    /**
+     * In order to render component A beneath component B, A must be rendered
+     * before B. However, this will cause "flickering", aka we see A briefly
+     * then B. To counter this, _isSwipeableViewRendered flag is used to set
+     * component A to be transparent until component B is loaded.
+     */
+    isSwipeableViewRendered: false,
+    rowHeight: null,
+  };
 
   componentDidMount(): void {
     if (this.props.shouldBounceOnMount) {
@@ -154,21 +181,30 @@ const SwipeableRow = createReactClass({
        * Do the on mount bounce after a delay because if we animate when other
        * components are loading, the animation will be laggy
        */
-      this.setTimeout(() => {
+      this._timeoutID = setTimeout(() => {
         this._animateBounceBack(ON_MOUNT_BOUNCE_DURATION);
       }, ON_MOUNT_BOUNCE_DELAY);
     }
-  },
+  }
 
-  UNSAFE_componentWillReceiveProps(nextProps: Object): void {
+  UNSAFE_componentWillReceiveProps(nextProps: $Shape<Props>): void {
     /**
      * We do not need an "animateOpen(noCallback)" because this animation is
      * handled internally by this component.
      */
-    if (this.props.isOpen && !nextProps.isOpen) {
+    const isOpen = this.props.isOpen ?? false;
+    const nextIsOpen = nextProps.isOpen ?? false;
+
+    if (isOpen && !nextIsOpen) {
       this._animateToClosedPosition();
     }
-  },
+  }
+
+  componentWillUnmount() {
+    if (this._timeoutID != null) {
+      clearTimeout(this._timeoutID);
+    }
+  }
 
   render(): React.Element<any> {
     // The view hidden behind the main view
@@ -197,60 +233,38 @@ const SwipeableRow = createReactClass({
         {swipeableView}
       </View>
     );
-  },
+  }
 
   close(): void {
-    this.props.onClose();
+    this.props.onClose && this.props.onClose();
     this._animateToClosedPosition();
-  },
+  }
 
-  _onSwipeableViewLayout(event: Object): void {
+  _onSwipeableViewLayout = (event: LayoutEvent): void => {
     this.setState({
       isSwipeableViewRendered: true,
       rowHeight: event.nativeEvent.layout.height,
     });
-  },
+  };
 
-  _handleMoveShouldSetPanResponderCapture(
-    event: Object,
-    gestureState: Object,
-  ): boolean {
-    // Decides whether a swipe is responded to by this component or its child
-    return gestureState.dy < 10 && this._isValidSwipe(gestureState);
-  },
-
-  _handlePanResponderGrant(event: Object, gestureState: Object): void {},
-
-  _handlePanResponderMove(event: Object, gestureState: Object): void {
-    if (this._isSwipingExcessivelyRightFromClosedPosition(gestureState)) {
-      return;
-    }
-
-    this.props.onSwipeStart();
-
-    if (this._isSwipingRightFromClosed(gestureState)) {
-      this._swipeSlowSpeed(gestureState);
-    } else {
-      this._swipeFullSpeed(gestureState);
-    }
-  },
-
-  _isSwipingRightFromClosed(gestureState: Object): boolean {
+  _isSwipingRightFromClosed(gestureState: GestureState): boolean {
     const gestureStateDx = IS_RTL ? -gestureState.dx : gestureState.dx;
     return this._previousLeft === CLOSED_LEFT_POSITION && gestureStateDx > 0;
-  },
+  }
 
-  _swipeFullSpeed(gestureState: Object): void {
+  _swipeFullSpeed(gestureState: GestureState): void {
     this.state.currentLeft.setValue(this._previousLeft + gestureState.dx);
-  },
+  }
 
-  _swipeSlowSpeed(gestureState: Object): void {
+  _swipeSlowSpeed(gestureState: GestureState): void {
     this.state.currentLeft.setValue(
       this._previousLeft + gestureState.dx / SLOW_SPEED_SWIPE_FACTOR,
     );
-  },
+  }
 
-  _isSwipingExcessivelyRightFromClosedPosition(gestureState: Object): boolean {
+  _isSwipingExcessivelyRightFromClosedPosition(
+    gestureState: GestureState,
+  ): boolean {
     /**
      * We want to allow a BIT of right swipe, to allow users to know that
      * swiping is available, but swiping right does not do anything
@@ -261,14 +275,7 @@ const SwipeableRow = createReactClass({
       this._isSwipingRightFromClosed(gestureState) &&
       gestureStateDx > RIGHT_SWIPE_THRESHOLD
     );
-  },
-
-  _onPanResponderTerminationRequest(
-    event: Object,
-    gestureState: Object,
-  ): boolean {
-    return false;
-  },
+  }
 
   _animateTo(
     toValue: number,
@@ -283,14 +290,15 @@ const SwipeableRow = createReactClass({
       this._previousLeft = toValue;
       callback();
     });
-  },
+  }
 
   _animateToOpenPosition(): void {
-    const maxSwipeDistance = IS_RTL
-      ? -this.props.maxSwipeDistance
-      : this.props.maxSwipeDistance;
-    this._animateTo(-maxSwipeDistance);
-  },
+    const maxSwipeDistance = this.props.maxSwipeDistance ?? 0;
+    const directionAwareMaxSwipeDistance = IS_RTL
+      ? -maxSwipeDistance
+      : maxSwipeDistance;
+    this._animateTo(-directionAwareMaxSwipeDistance);
+  }
 
   _animateToOpenPositionWith(speed: number, distMoved: number): void {
     /**
@@ -301,26 +309,25 @@ const SwipeableRow = createReactClass({
       speed > HORIZONTAL_FULL_SWIPE_SPEED_THRESHOLD
         ? speed
         : HORIZONTAL_FULL_SWIPE_SPEED_THRESHOLD;
+    const maxSwipeDistance = this.props.maxSwipeDistance ?? 0;
     /**
      * Calculate the duration the row should take to swipe the remaining distance
      * at the same speed the user swiped (or the speed threshold)
      */
-    const duration = Math.abs(
-      (this.props.maxSwipeDistance - Math.abs(distMoved)) / speed,
-    );
-    const maxSwipeDistance = IS_RTL
-      ? -this.props.maxSwipeDistance
-      : this.props.maxSwipeDistance;
-    this._animateTo(-maxSwipeDistance, duration);
-  },
+    const duration = Math.abs((maxSwipeDistance - Math.abs(distMoved)) / speed);
+    const directionAwareMaxSwipeDistance = IS_RTL
+      ? -maxSwipeDistance
+      : maxSwipeDistance;
+    this._animateTo(-directionAwareMaxSwipeDistance, duration);
+  }
 
   _animateToClosedPosition(duration: number = SWIPE_DURATION): void {
     this._animateTo(CLOSED_LEFT_POSITION, duration);
-  },
+  }
 
-  _animateToClosedPositionDuringBounce(): void {
+  _animateToClosedPositionDuringBounce = (): void => {
     this._animateToClosedPosition(RIGHT_SWIPE_BOUNCE_BACK_DURATION);
-  },
+  };
 
   _animateBounceBack(duration: number): void {
     /**
@@ -335,12 +342,13 @@ const SwipeableRow = createReactClass({
       duration,
       this._animateToClosedPositionDuringBounce,
     );
-  },
+  }
 
   // Ignore swipes due to user's finger moving slightly when tapping
-  _isValidSwipe(gestureState: Object): boolean {
+  _isValidSwipe(gestureState: GestureState): boolean {
+    const preventSwipeRight = this.props.preventSwipeRight ?? false;
     if (
-      this.props.preventSwipeRight &&
+      preventSwipeRight &&
       this._previousLeft === CLOSED_LEFT_POSITION &&
       gestureState.dx > 0
     ) {
@@ -348,49 +356,19 @@ const SwipeableRow = createReactClass({
     }
 
     return Math.abs(gestureState.dx) > HORIZONTAL_SWIPE_DISTANCE_THRESHOLD;
-  },
+  }
 
-  _shouldAnimateRemainder(gestureState: Object): boolean {
+  _shouldAnimateRemainder(gestureState: GestureState): boolean {
     /**
      * If user has swiped past a certain distance, animate the rest of the way
      * if they let go
      */
+    const swipeThreshold = this.props.swipeThreshold ?? DEFAULT_SWIPE_THRESHOLD;
     return (
-      Math.abs(gestureState.dx) > this.props.swipeThreshold ||
+      Math.abs(gestureState.dx) > swipeThreshold ||
       gestureState.vx > HORIZONTAL_FULL_SWIPE_SPEED_THRESHOLD
     );
-  },
-
-  _handlePanResponderEnd(event: Object, gestureState: Object): void {
-    const horizontalDistance = IS_RTL ? -gestureState.dx : gestureState.dx;
-    if (this._isSwipingRightFromClosed(gestureState)) {
-      this.props.onOpen();
-      this._animateBounceBack(RIGHT_SWIPE_BOUNCE_BACK_DURATION);
-    } else if (this._shouldAnimateRemainder(gestureState)) {
-      if (horizontalDistance < 0) {
-        // Swiped left
-        this.props.onOpen();
-        this._animateToOpenPositionWith(gestureState.vx, horizontalDistance);
-      } else {
-        // Swiped right
-        this.props.onClose();
-        this._animateToClosedPosition();
-      }
-    } else {
-      if (this._previousLeft === CLOSED_LEFT_POSITION) {
-        this._animateToClosedPosition();
-      } else {
-        this._animateToOpenPosition();
-      }
-    }
-
-    this.props.onSwipeEnd();
-  },
-});
-
-// TODO: Delete this when `SwipeableRow` uses class syntax.
-class TypedSwipeableRow extends React.Component<Props> {
-  close() {}
+  }
 }
 
 const styles = StyleSheet.create({
@@ -403,4 +381,4 @@ const styles = StyleSheet.create({
   },
 });
 
-module.exports = ((SwipeableRow: any): Class<TypedSwipeableRow>);
+module.exports = SwipeableRow;
diff --git a/Libraries/Experimental/WindowedListView.js b/Libraries/Experimental/WindowedListView.js
index 15f1d0b4a8755a..8ce5b44c07b052 100644
--- a/Libraries/Experimental/WindowedListView.js
+++ b/Libraries/Experimental/WindowedListView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,6 @@ const Batchinator = require('Batchinator');
 const IncrementalGroup = require('IncrementalGroup');
 const React = require('React');
 const ScrollView = require('ScrollView');
-const Set = require('Set');
 const StyleSheet = require('StyleSheet');
 const Systrace = require('Systrace');
 const View = require('View');
@@ -24,7 +23,7 @@ const clamp = require('clamp');
 const deepDiffer = require('deepDiffer');
 const infoLog = require('infoLog');
 const invariant = require('fbjs/lib/invariant');
-const nullthrows = require('fbjs/lib/nullthrows');
+const nullthrows = require('nullthrows');
 
 import type {NativeMethodsMixinType} from 'ReactNativeTypes';
 
@@ -778,11 +777,7 @@ class CellRenderer extends React.Component<CellProps> {
     if (DEBUG) {
       infoLog('render cell ' + this.props.rowIndex);
       const Text = require('Text');
-      debug = (
-        <Text style={{backgroundColor: 'lightblue'}}>
-          Row: {this.props.rowIndex}
-        </Text>
-      );
+      debug = <Text style={styles.debug}>Row: {this.props.rowIndex}</Text>;
     }
     const style = this._includeInLayoutLatch ? styles.include : styles.remove;
     return (
@@ -820,6 +815,9 @@ const styles = StyleSheet.create({
     right: -removedXOffset,
     opacity: DEBUG ? 0.1 : 0,
   },
+  debug: {
+    backgroundColor: 'lightblue',
+  },
 });
 
 module.exports = WindowedListView;
diff --git a/Libraries/Geolocation/Geolocation.js b/Libraries/Geolocation/Geolocation.js
index d252da95bca58f..0cde34c59456bc 100644
--- a/Libraries/Geolocation/Geolocation.js
+++ b/Libraries/Geolocation/Geolocation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Geolocation/RCTLocationObserver.h b/Libraries/Geolocation/RCTLocationObserver.h
index 5de0ea289d881d..f3f9e19b8f2902 100644
--- a/Libraries/Geolocation/RCTLocationObserver.h
+++ b/Libraries/Geolocation/RCTLocationObserver.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Geolocation/RCTLocationObserver.m b/Libraries/Geolocation/RCTLocationObserver.m
index 8fa9956a1885c0..44969b28167552 100644
--- a/Libraries/Geolocation/RCTLocationObserver.m
+++ b/Libraries/Geolocation/RCTLocationObserver.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/AssetRegistry.js b/Libraries/Image/AssetRegistry.js
index b050a9e239cd27..7d9626f8771f42 100644
--- a/Libraries/Image/AssetRegistry.js
+++ b/Libraries/Image/AssetRegistry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/AssetSourceResolver.js b/Libraries/Image/AssetSourceResolver.js
index a870a325242838..b5650620ae1481 100644
--- a/Libraries/Image/AssetSourceResolver.js
+++ b/Libraries/Image/AssetSourceResolver.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/Image.android.js b/Libraries/Image/Image.android.js
index 0058b210d957bd..70e6e0f40414a5 100644
--- a/Libraries/Image/Image.android.js
+++ b/Libraries/Image/Image.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,25 +10,24 @@
 
 'use strict';
 
-const ImageStylePropTypes = require('ImageStylePropTypes');
+const DeprecatedImageStylePropTypes = require('DeprecatedImageStylePropTypes');
+const DeprecatedStyleSheetPropType = require('DeprecatedStyleSheetPropType');
+const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
+const ImageViewNativeComponent = require('ImageViewNativeComponent');
 const NativeModules = require('NativeModules');
-const React = require('React');
-const ReactNative = require('ReactNative');
 const PropTypes = require('prop-types');
+const React = require('React');
+const ReactNative = require('ReactNative'); // eslint-disable-line no-unused-vars
 const StyleSheet = require('StyleSheet');
-const StyleSheetPropType = require('StyleSheetPropType');
 const TextAncestor = require('TextAncestor');
-const ViewPropTypes = require('ViewPropTypes');
 
 const flattenStyle = require('flattenStyle');
 const merge = require('merge');
-const requireNativeComponent = require('requireNativeComponent');
 const resolveAssetSource = require('resolveAssetSource');
 
 const {ImageLoader} = NativeModules;
 
-const RKImage = requireNativeComponent('RCTImageView');
-const RCTTextInlineImage = requireNativeComponent('RCTTextInlineImage');
+const TextInlineImageNativeComponent = require('TextInlineImageNativeComponent');
 
 import type {ImageProps as ImagePropsType} from 'ImageProps';
 
@@ -38,8 +37,8 @@ function generateRequestId() {
 }
 
 const ImageProps = {
-  ...ViewPropTypes,
-  style: StyleSheetPropType(ImageStylePropTypes),
+  ...DeprecatedViewPropTypes,
+  style: DeprecatedStyleSheetPropType(DeprecatedImageStylePropTypes),
   /**
    * See https://facebook.github.io/react-native/docs/image.html#source
    */
@@ -182,7 +181,7 @@ declare class ImageComponentType extends ReactNative.NativeComponent<
  */
 let Image = (
   props: ImagePropsType,
-  forwardedRef: ?React.Ref<'RCTTextInlineImage' | 'RKImage'>,
+  forwardedRef: ?React.Ref<'RCTTextInlineImage' | 'ImageViewNativeComponent'>,
 ) => {
   let source = resolveAssetSource(props.source);
   const defaultSource = resolveAssetSource(props.defaultSource);
@@ -250,9 +249,9 @@ let Image = (
     <TextAncestor.Consumer>
       {hasTextAncestor =>
         hasTextAncestor ? (
-          <RCTTextInlineImage {...nativeProps} />
+          <TextInlineImageNativeComponent {...nativeProps} />
         ) : (
-          <RKImage {...nativeProps} />
+          <ImageViewNativeComponent {...nativeProps} />
         )
       }
     </TextAncestor.Consumer>
@@ -263,10 +262,9 @@ let Image = (
 Image = React.forwardRef(Image);
 
 /**
- * Prefetches a remote image for later use by downloading it to the disk
- * cache
+ * Retrieve the width and height (in pixels) of an image prior to displaying it
  *
- * See https://facebook.github.io/react-native/docs/image.html#prefetch
+ * See https://facebook.github.io/react-native/docs/image.html#getsize
  */
 Image.getSize = getSize;
 
diff --git a/Libraries/Image/Image.js b/Libraries/Image/Image.js
index d96e6daeb8860e..0aec13a86e8f25 100644
--- a/Libraries/Image/Image.js
+++ b/Libraries/Image/Image.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,10 +12,10 @@
 
 'use strict';
 
-const ImageProps = require('ImageProps');
+const DeprecatedImagePropType = require('DeprecatedImagePropType');
 const NativeModules = require('NativeModules');
 const React = require('React');
-const ReactNative = require('ReactNative');
+const ReactNative = require('ReactNative'); // eslint-disable-line no-unused-vars
 const StyleSheet = require('StyleSheet');
 
 const flattenStyle = require('flattenStyle');
@@ -26,6 +26,7 @@ const ImageViewManager = NativeModules.ImageViewManager;
 
 const RCTImageView = requireNativeComponent('RCTImageView');
 
+import type {ImageStyleProp} from 'StyleSheet';
 import type {ImageProps as ImagePropsType} from 'ImageProps';
 
 function getSize(
@@ -47,13 +48,20 @@ function prefetch(url: string) {
   return ImageViewManager.prefetchImage(url);
 }
 
+async function queryCache(
+  urls: Array<string>,
+): Promise<Map<string, 'memory' | 'disk'>> {
+  return await ImageViewManager.queryCache(urls);
+}
+
 declare class ImageComponentType extends ReactNative.NativeComponent<
   ImagePropsType,
 > {
   static getSize: typeof getSize;
   static prefetch: typeof prefetch;
+  static queryCache: typeof queryCache;
   static resolveAssetSource: typeof resolveAssetSource;
-  static propTypes: typeof ImageProps;
+  static propTypes: typeof DeprecatedImagePropType;
 }
 
 /**
@@ -74,12 +82,14 @@ let Image = (
   };
 
   let sources;
-  let style;
+  let style: ImageStyleProp;
   if (Array.isArray(source)) {
+    // $FlowFixMe flattenStyle is not strong enough
     style = flattenStyle([styles.base, props.style]) || {};
     sources = source;
   } else {
     const {width, height, uri} = source;
+    // $FlowFixMe flattenStyle is not strong enough
     style = flattenStyle([{width, height}, styles.base, props.style]) || {};
     sources = [source];
 
@@ -133,6 +143,13 @@ Image.getSize = getSize;
  */
 Image.prefetch = prefetch;
 
+/**
+ * Performs cache interrogation.
+ *
+ *  See https://facebook.github.io/react-native/docs/image.html#querycache
+ */
+Image.queryCache = queryCache;
+
 /**
  * Resolves an asset reference into an object.
  *
@@ -140,7 +157,7 @@ Image.prefetch = prefetch;
  */
 Image.resolveAssetSource = resolveAssetSource;
 
-Image.propTypes = ImageProps;
+Image.propTypes = DeprecatedImagePropType;
 
 const styles = StyleSheet.create({
   base: {
diff --git a/Libraries/Image/ImageBackground.js b/Libraries/Image/ImageBackground.js
index a128880a17807c..7d04576dcc0c92 100644
--- a/Libraries/Image/ImageBackground.js
+++ b/Libraries/Image/ImageBackground.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/ImageEditor.js b/Libraries/Image/ImageEditor.js
index 65edcccf12204f..53785b680c15c1 100644
--- a/Libraries/Image/ImageEditor.js
+++ b/Libraries/Image/ImageEditor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,25 +16,25 @@ type ImageCropData = {
    * The top-left corner of the cropped image, specified in the original
    * image's coordinate space.
    */
-  offset: {
+  offset: {|
     x: number,
     y: number,
-  },
+  |},
   /**
    * The size (dimensions) of the cropped image, specified in the original
    * image's coordinate space.
    */
-  size: {
+  size: {|
     width: number,
     height: number,
-  },
+  |},
   /**
    * (Optional) size to scale the cropped image to.
    */
-  displaySize?: ?{
+  displaySize?: ?{|
     width: number,
     height: number,
-  },
+  |},
   /**
    * (Optional) the resizing mode to use when scaling the image. If the
    * `displaySize` param is not specified, this has no effect.
diff --git a/Libraries/Image/ImageProps.js b/Libraries/Image/ImageProps.js
index 54f6250e1f1458..99591c48f604b9 100644
--- a/Libraries/Image/ImageProps.js
+++ b/Libraries/Image/ImageProps.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,35 +10,42 @@
 
 'use strict';
 
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
-const ImageSourcePropType = require('ImageSourcePropType');
-const ImageStylePropTypes = require('ImageStylePropTypes');
-const PropTypes = require('prop-types');
-const StyleSheetPropType = require('StyleSheetPropType');
-
+import type {SyntheticEvent, LayoutEvent} from 'CoreEventTypes';
+import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
+import type {ImageSource} from 'ImageSource';
+import type {ViewStyleProp, ImageStyleProp} from 'StyleSheet';
 import type {DimensionValue} from 'StyleSheetTypes';
 import type {ViewProps} from 'ViewPropTypes';
-import type {ImageSource} from 'ImageSource';
-import type {EdgeInsetsProp} from 'EdgeInsetsPropType';
-import type {SyntheticEvent} from 'CoreEventTypes';
-import type {ImageStyleProp} from 'StyleSheet';
 
-type OnLoadEvent = SyntheticEvent<
+export type ImageLoadEvent = SyntheticEvent<
   $ReadOnly<{|
-    // Only on Android
-    uri?: string,
-
     source: $ReadOnly<{|
       width: number,
       height: number,
       url: string,
     |}>,
+    uri?: string, // Only on Android
   |}>,
 >;
 
 type IOSImageProps = $ReadOnly<{|
+  /**
+   * A static image to display while loading the image source.
+   *
+   * See https://facebook.github.io/react-native/docs/image.html#defaultsource
+   */
   defaultSource?: ?ImageSource,
+  /**
+   * Invoked when a partial load of the image is complete.
+   *
+   * See https://facebook.github.io/react-native/docs/image.html#onpartialload
+   */
   onPartialLoad?: ?() => void,
+  /**
+   * Invoked on download progress with `{nativeEvent: {loaded, total}}`.
+   *
+   * See https://facebook.github.io/react-native/docs/image.html#onprogress
+   */
   onProgress?: ?(
     event: SyntheticEvent<$ReadOnly<{|loaded: number, total: number|}>>,
   ) => void,
@@ -51,142 +58,111 @@ type AndroidImageProps = $ReadOnly<{|
 |}>;
 
 export type ImageProps = {|
-  ...ViewProps,
+  ...$Diff<ViewProps, $ReadOnly<{|style: ?ViewStyleProp|}>>,
   ...IOSImageProps,
   ...AndroidImageProps,
-  blurRadius?: number,
-  capInsets?: ?EdgeInsetsProp,
 
-  onError?: ?(event: SyntheticEvent<$ReadOnly<{||}>>) => void,
-  onLoad?: ?(event: OnLoadEvent) => void,
-  onLoadEnd?: ?() => void,
-  onLoadStart?: ?() => void,
-  resizeMethod?: ?('auto' | 'resize' | 'scale'),
-  source?: ?ImageSource,
-  style?: ImageStyleProp,
-
-  // Can be set via props or style, for now
-  height?: DimensionValue,
-  width?: DimensionValue,
-  resizeMode?: ?('cover' | 'contain' | 'stretch' | 'repeat' | 'center'),
-
-  src?: empty,
-  children?: empty,
-|};
-
-module.exports = {
-  /**
-   * See https://facebook.github.io/react-native/docs/image.html#style
-   */
-  style: StyleSheetPropType(ImageStylePropTypes),
-  /**
-   * The image source (either a remote URL or a local file resource).
-   *
-   * See https://facebook.github.io/react-native/docs/image.html#source
-   */
-  source: ImageSourcePropType,
-  /**
-   * A static image to display while loading the image source.
-   *
-   * See https://facebook.github.io/react-native/docs/image.html#defaultsource
-   */
-  defaultSource: PropTypes.oneOfType([
-    PropTypes.shape({
-      uri: PropTypes.string,
-      width: PropTypes.number,
-      height: PropTypes.number,
-      scale: PropTypes.number,
-    }),
-    PropTypes.number,
-  ]),
   /**
    * When true, indicates the image is an accessibility element.
    *
    * See https://facebook.github.io/react-native/docs/image.html#accessible
    */
-  accessible: PropTypes.bool,
+  accessible?: ?boolean,
+
   /**
    * The text that's read by the screen reader when the user interacts with
    * the image.
    *
    * See https://facebook.github.io/react-native/docs/image.html#accessibilitylabel
    */
-  accessibilityLabel: PropTypes.node,
+  accessibilityLabel?: ?Stringish,
+
   /**
    * blurRadius: the blur radius of the blur filter added to the image
    *
    * See https://facebook.github.io/react-native/docs/image.html#blurradius
    */
-  blurRadius: PropTypes.number,
+  blurRadius?: ?number,
+
   /**
    * See https://facebook.github.io/react-native/docs/image.html#capinsets
    */
-  capInsets: EdgeInsetsPropType,
+  capInsets?: ?EdgeInsetsProp,
+
   /**
-   * See https://facebook.github.io/react-native/docs/image.html#resizemethod
+   * Invoked on load error with `{nativeEvent: {error}}`.
+   *
+   * See https://facebook.github.io/react-native/docs/image.html#onerror
    */
-  resizeMethod: PropTypes.oneOf(['auto', 'resize', 'scale']),
+  onError?: ?(event: SyntheticEvent<$ReadOnly<{||}>>) => void,
+
   /**
-   * Determines how to resize the image when the frame doesn't match the raw
-   * image dimensions.
+   * Invoked on mount and layout changes with
+   * `{nativeEvent: {layout: {x, y, width, height}}}`.
    *
-   * See https://facebook.github.io/react-native/docs/image.html#resizemode
+   * See https://facebook.github.io/react-native/docs/image.html#onlayout
    */
-  resizeMode: PropTypes.oneOf([
-    'cover',
-    'contain',
-    'stretch',
-    'repeat',
-    'center',
-  ]),
+
+  onLayout?: ?(event: LayoutEvent) => mixed,
+
   /**
-   * A unique identifier for this element to be used in UI Automation
-   * testing scripts.
+   * Invoked when load completes successfully.
    *
-   * See https://facebook.github.io/react-native/docs/image.html#testid
+   * See https://facebook.github.io/react-native/docs/image.html#onload
    */
-  testID: PropTypes.string,
+  onLoad?: ?(event: ImageLoadEvent) => void,
+
   /**
-   * Invoked on mount and layout changes with
-   * `{nativeEvent: {layout: {x, y, width, height}}}`.
+   * Invoked when load either succeeds or fails.
    *
-   * See https://facebook.github.io/react-native/docs/image.html#onlayout
+   * See https://facebook.github.io/react-native/docs/image.html#onloadend
    */
-  onLayout: PropTypes.func,
+  onLoadEnd?: ?() => void,
+
   /**
    * Invoked on load start.
    *
    * See https://facebook.github.io/react-native/docs/image.html#onloadstart
    */
-  onLoadStart: PropTypes.func,
+  onLoadStart?: ?() => void,
+
   /**
-   * Invoked on download progress with `{nativeEvent: {loaded, total}}`.
-   *
-   * See https://facebook.github.io/react-native/docs/image.html#onprogress
+   * See https://facebook.github.io/react-native/docs/image.html#resizemethod
    */
-  onProgress: PropTypes.func,
+  resizeMethod?: ?('auto' | 'resize' | 'scale'),
+
   /**
-   * Invoked on load error with `{nativeEvent: {error}}`.
+   * The image source (either a remote URL or a local file resource).
    *
-   * See https://facebook.github.io/react-native/docs/image.html#onerror
+   * See https://facebook.github.io/react-native/docs/image.html#source
    */
-  onError: PropTypes.func,
+  source?: ?ImageSource,
+
   /**
-   * Invoked when a partial load of the image is complete.
-   *
-   * See https://facebook.github.io/react-native/docs/image.html#onpartialload
+   * See https://facebook.github.io/react-native/docs/image.html#style
    */
-  onPartialLoad: PropTypes.func,
+  style?: ?ImageStyleProp,
+
+  // Can be set via props or style, for now
+  height?: ?DimensionValue,
+  width?: ?DimensionValue,
+
   /**
-   * Invoked when load completes successfully.
+   * Determines how to resize the image when the frame doesn't match the raw
+   * image dimensions.
    *
-   * See https://facebook.github.io/react-native/docs/image.html#onload
+   * See https://facebook.github.io/react-native/docs/image.html#resizemode
    */
-  onLoad: PropTypes.func,
+  resizeMode?: ?('cover' | 'contain' | 'stretch' | 'repeat' | 'center'),
+
   /**
-   * Invoked when load either succeeds or fails.
+   * A unique identifier for this element to be used in UI Automation
+   * testing scripts.
    *
-   * See https://facebook.github.io/react-native/docs/image.html#onloadend
+   * See https://facebook.github.io/react-native/docs/image.html#testid
    */
-  onLoadEnd: PropTypes.func,
-};
+  testID?: ?string,
+
+  src?: empty,
+  children?: empty,
+|};
diff --git a/Libraries/Image/ImageResizeMode.js b/Libraries/Image/ImageResizeMode.js
index 48779e383f3119..1dad3309b1588d 100644
--- a/Libraries/Image/ImageResizeMode.js
+++ b/Libraries/Image/ImageResizeMode.js
@@ -1,52 +1,36 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @flow
+ * @flow strict
  * @format
  */
-'use strict';
 
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const keyMirror = require('fbjs/lib/keyMirror');
+'use strict';
 
 /**
- * ImageResizeMode - Enum for different image resizing modes, set via
- * `resizeMode` style property on `<Image>` components.
+ * ImageResizeMode defines valid values for different image resizing modes set
+ * via the `resizeMode` style property on `<Image>`.
  */
-const ImageResizeMode = keyMirror({
-  /**
-   * contain - The image will be resized such that it will be completely
-   * visible, contained within the frame of the View.
-   */
-  contain: null,
-  /**
-   * cover - The image will be resized such that the entire area of the view
-   * is covered by the image, potentially clipping parts of the image.
-   */
-  cover: null,
-  /**
-   * stretch - The image will be stretched to fill the entire frame of the
-   * view without clipping. This may change the aspect ratio of the image,
-   * distorting it.
-   */
-  stretch: null,
-  /**
-   * center - The image will be scaled down such that it is completely visible,
-   * if bigger than the area of the view.
-   * The image will not be scaled up.
-   */
-  center: null,
+export type ImageResizeMode =
+  // Resize by scaling down such that it is completely visible, if bigger than
+  // the area of the view. The image will not be scaled up.
+  | 'center'
+
+  // Resize such that it will be completely visible, contained within the frame
+  // of the View.
+  | 'contain'
+
+  // Resize such that the entire area of the view is covered by the image,
+  // potentially clipping parts of the image.
+  | 'cover'
 
-  /**
-   * repeat - The image will be repeated to cover the frame of the View. The
-   * image will keep it's size and aspect ratio.
-   */
-  repeat: null,
-});
+  // Resize by repeating to cover the frame of the View. The image will keep its
+  // size and aspect ratio.
+  | 'repeat'
 
-module.exports = ImageResizeMode;
+  // Resize by stretching it to fill the entire frame of the view without
+  // clipping. This may change the aspect ratio of the image, distorting it.
+  | 'stretch';
diff --git a/Libraries/Image/ImageSource.js b/Libraries/Image/ImageSource.js
index 5c3c84df901209..0e03dc78c0f5d1 100644
--- a/Libraries/Image/ImageSource.js
+++ b/Libraries/Image/ImageSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,15 +14,73 @@
 // that might have more keys. This also has to be inexact to support taking
 // instances of classes like FBIcon.
 // https://fburl.com/8lynhvtw
-type ImageURISource = $ReadOnly<{
+export type ImageURISource = $ReadOnly<{
+  /**
+   * `uri` is a string representing the resource identifier for the image, which
+   * could be an http address, a local file path, or the name of a static image
+   * resource (which should be wrapped in the `require('./path/to/image.png')`
+   * function).
+   */
   uri?: ?string,
+
+  /**
+   * `bundle` is the iOS asset bundle which the image is included in. This
+   * will default to [NSBundle mainBundle] if not set.
+   * @platform ios
+   */
   bundle?: ?string,
+
+  /**
+   * `method` is the HTTP Method to use. Defaults to GET if not specified.
+   */
   method?: ?string,
+
+  /**
+   * `headers` is an object representing the HTTP headers to send along with the
+   * request for a remote image.
+   */
   headers?: ?Object,
+
+  /**
+   * `body` is the HTTP body to send with the request. This must be a valid
+   * UTF-8 string, and will be sent exactly as specified, with no
+   * additional encoding (e.g. URL-escaping or base64) applied.
+   */
   body?: ?string,
+
+  /**
+   * `cache` determines how the requests handles potentially cached
+   * responses.
+   *
+   * - `default`: Use the native platforms default strategy. `useProtocolCachePolicy` on iOS.
+   *
+   * - `reload`: The data for the URL will be loaded from the originating source.
+   * No existing cache data should be used to satisfy a URL load request.
+   *
+   * - `force-cache`: The existing cached data will be used to satisfy the request,
+   * regardless of its age or expiration date. If there is no existing data in the cache
+   * corresponding the request, the data is loaded from the originating source.
+   *
+   * - `only-if-cached`: The existing cache data will be used to satisfy a request, regardless of
+   * its age or expiration date. If there is no existing data in the cache corresponding
+   * to a URL load request, no attempt is made to load the data from the originating source,
+   * and the load is considered to have failed.
+   *
+   * @platform ios
+   */
   cache?: ?('default' | 'reload' | 'force-cache' | 'only-if-cached'),
+
+  /**
+   * `width` and `height` can be specified if known at build time, in which case
+   * these will be used to set the default `<Image/>` component dimensions.
+   */
   width?: ?number,
   height?: ?number,
+
+  /**
+   * `scale` is used to indicate the scale factor of the image. Defaults to 1.0 if
+   * unspecified, meaning that one image pixel equates to one display point / DIP.
+   */
   scale?: ?number,
 }>;
 
diff --git a/Libraries/Image/ImageSourcePropType.js b/Libraries/Image/ImageSourcePropType.js
deleted file mode 100644
index 6f67113fe1bf18..00000000000000
--- a/Libraries/Image/ImageSourcePropType.js
+++ /dev/null
@@ -1,90 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @no-flow
- * @format
- */
-'use strict';
-
-const PropTypes = require('prop-types');
-
-const ImageURISourcePropType = PropTypes.shape({
-  /**
-   * `uri` is a string representing the resource identifier for the image, which
-   * could be an http address, a local file path, or the name of a static image
-   * resource (which should be wrapped in the `require('./path/to/image.png')`
-   * function).
-   */
-  uri: PropTypes.string,
-  /**
-   * `bundle` is the iOS asset bundle which the image is included in. This
-   * will default to [NSBundle mainBundle] if not set.
-   * @platform ios
-   */
-  bundle: PropTypes.string,
-  /**
-   * `method` is the HTTP Method to use. Defaults to GET if not specified.
-   */
-  method: PropTypes.string,
-  /**
-   * `headers` is an object representing the HTTP headers to send along with the
-   * request for a remote image.
-   */
-  headers: PropTypes.objectOf(PropTypes.string),
-  /**
-   * `body` is the HTTP body to send with the request. This must be a valid
-   * UTF-8 string, and will be sent exactly as specified, with no
-   * additional encoding (e.g. URL-escaping or base64) applied.
-   */
-  body: PropTypes.string,
-  /**
-   * `cache` determines how the requests handles potentially cached
-   * responses.
-   *
-   * - `default`: Use the native platforms default strategy. `useProtocolCachePolicy` on iOS.
-   *
-   * - `reload`: The data for the URL will be loaded from the originating source.
-   * No existing cache data should be used to satisfy a URL load request.
-   *
-   * - `force-cache`: The existing cached data will be used to satisfy the request,
-   * regardless of its age or expiration date. If there is no existing data in the cache
-   * corresponding the request, the data is loaded from the originating source.
-   *
-   * - `only-if-cached`: The existing cache data will be used to satisfy a request, regardless of
-   * its age or expiration date. If there is no existing data in the cache corresponding
-   * to a URL load request, no attempt is made to load the data from the originating source,
-   * and the load is considered to have failed.
-   *
-   * @platform ios
-   */
-  cache: PropTypes.oneOf([
-    'default',
-    'reload',
-    'force-cache',
-    'only-if-cached',
-  ]),
-  /**
-   * `width` and `height` can be specified if known at build time, in which case
-   * these will be used to set the default `<Image/>` component dimensions.
-   */
-  width: PropTypes.number,
-  height: PropTypes.number,
-  /**
-   * `scale` is used to indicate the scale factor of the image. Defaults to 1.0 if
-   * unspecified, meaning that one image pixel equates to one display point / DIP.
-   */
-  scale: PropTypes.number,
-});
-
-const ImageSourcePropType = PropTypes.oneOfType([
-  ImageURISourcePropType,
-  // Opaque type returned by require('./image.jpg')
-  PropTypes.number,
-  // Multiple sources
-  PropTypes.arrayOf(ImageURISourcePropType),
-]);
-
-module.exports = ImageSourcePropType;
diff --git a/Libraries/Image/ImageStore.js b/Libraries/Image/ImageStore.js
index 5373020376a5f1..60273b79f201f2 100644
--- a/Libraries/Image/ImageStore.js
+++ b/Libraries/Image/ImageStore.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/ImageViewNativeComponent.js b/Libraries/Image/ImageViewNativeComponent.js
new file mode 100644
index 00000000000000..47f8d531f756d8
--- /dev/null
+++ b/Libraries/Image/ImageViewNativeComponent.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const requireNativeComponent = require('requireNativeComponent');
+
+const ImageViewNativeComponent = requireNativeComponent('RCTImageView');
+
+module.exports = ImageViewNativeComponent;
diff --git a/Libraries/Image/RCTGIFImageDecoder.h b/Libraries/Image/RCTGIFImageDecoder.h
index 1f942aef4c8ce6..f9cc0eef4ebf94 100644
--- a/Libraries/Image/RCTGIFImageDecoder.h
+++ b/Libraries/Image/RCTGIFImageDecoder.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTGIFImageDecoder.m b/Libraries/Image/RCTGIFImageDecoder.m
index 81a2787777d293..cf7119d4509472 100644
--- a/Libraries/Image/RCTGIFImageDecoder.m
+++ b/Libraries/Image/RCTGIFImageDecoder.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -32,7 +32,17 @@ - (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)imageData
 {
   CGImageSourceRef imageSource = CGImageSourceCreateWithData((CFDataRef)imageData, NULL);
   NSDictionary<NSString *, id> *properties = (__bridge_transfer NSDictionary *)CGImageSourceCopyProperties(imageSource, NULL);
-  NSUInteger loopCount = [properties[(id)kCGImagePropertyGIFDictionary][(id)kCGImagePropertyGIFLoopCount] unsignedIntegerValue];
+  CGFloat loopCount = 0;
+  if ([[properties[(id)kCGImagePropertyGIFDictionary] allKeys] containsObject:(id)kCGImagePropertyGIFLoopCount]) {
+    loopCount = [properties[(id)kCGImagePropertyGIFDictionary][(id)kCGImagePropertyGIFLoopCount] unsignedIntegerValue];
+    if (loopCount == 0) {
+      // A loop count of 0 means infinite
+      loopCount = HUGE_VALF;
+    } else {
+      // A loop count of 1 means it should repeat twice, 2 means, thrice, etc.
+      loopCount += 1;
+    }
+  }
 
   UIImage *image = nil;
   size_t imageCount = CGImageSourceGetCount(imageSource);
@@ -88,11 +98,12 @@ - (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)imageData
     // Create animation
     CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"contents"];
     animation.calculationMode = kCAAnimationDiscrete;
-    animation.repeatCount = loopCount == 0 ? HUGE_VALF : loopCount;
+    animation.repeatCount = loopCount;
     animation.keyTimes = keyTimes;
     animation.values = images;
     animation.duration = duration;
     animation.removedOnCompletion = NO;
+    animation.fillMode = kCAFillModeForwards;
     image.reactKeyframeAnimation = animation;
 
   } else {
diff --git a/Libraries/Image/RCTImageBlurUtils.h b/Libraries/Image/RCTImageBlurUtils.h
index 0bd7070c495716..c7eb462a8ff477 100644
--- a/Libraries/Image/RCTImageBlurUtils.h
+++ b/Libraries/Image/RCTImageBlurUtils.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageBlurUtils.m b/Libraries/Image/RCTImageBlurUtils.m
index a27ae047ebd0ef..6f3a5e6362d2d3 100644
--- a/Libraries/Image/RCTImageBlurUtils.m
+++ b/Libraries/Image/RCTImageBlurUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageCache.h b/Libraries/Image/RCTImageCache.h
index c0d24ad25a2d41..b7acc1126ca6cd 100644
--- a/Libraries/Image/RCTImageCache.h
+++ b/Libraries/Image/RCTImageCache.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageCache.m b/Libraries/Image/RCTImageCache.m
index 89695282fae6ed..b7db10db6ed5b2 100644
--- a/Libraries/Image/RCTImageCache.m
+++ b/Libraries/Image/RCTImageCache.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,27 +18,29 @@
 
 #import "RCTImageUtils.h"
 
-static const NSUInteger RCTMaxCachableDecodedImageSizeInBytes = 1048576; // 1MB
+static const NSUInteger RCTMaxCachableDecodedImageSizeInBytes = 2097152; // 2 MB
 
 static NSString *RCTCacheKeyForImage(NSString *imageTag, CGSize size, CGFloat scale,
-                                     RCTResizeMode resizeMode, NSString *responseDate)
+                                     RCTResizeMode resizeMode)
 {
-  return [NSString stringWithFormat:@"%@|%g|%g|%g|%lld|%@",
-          imageTag, size.width, size.height, scale, (long long)resizeMode, responseDate];
+  return [NSString stringWithFormat:@"%@|%g|%g|%g|%lld",
+          imageTag, size.width, size.height, scale, (long long)resizeMode];
 }
 
 @implementation RCTImageCache
 {
   NSOperationQueue *_imageDecodeQueue;
   NSCache *_decodedImageCache;
+  NSMutableDictionary *_cacheStaleTimes;
 }
 
 - (instancetype)init
 {
   _decodedImageCache = [NSCache new];
-  _decodedImageCache.totalCostLimit = 5 * 1024 * 1024; // 5MB
-
 #if !TARGET_OS_OSX // TODO(macOS ISS#2323203)
+  _decodedImageCache.totalCostLimit = 20 * 1024 * 1024; // 20 MB
+  _cacheStaleTimes = [[NSMutableDictionary alloc] init];
+
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(clearCache)
                                                name:UIApplicationDidReceiveMemoryWarningNotification
@@ -61,6 +63,9 @@ - (void)dealloc
 - (void)clearCache
 {
   [_decodedImageCache removeAllObjects];
+  @synchronized(_cacheStaleTimes) {
+    [_cacheStaleTimes removeAllObjects];
+  }
 }
 #endif // TODO(macOS ISS#2323203)
 
@@ -83,9 +88,19 @@ - (UIImage *)imageForUrl:(NSString *)url
                     size:(CGSize)size
                    scale:(CGFloat)scale
               resizeMode:(RCTResizeMode)resizeMode
-            responseDate:(NSString *)responseDate
 {
-  NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode, responseDate);
+  NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode);
+  @synchronized(_cacheStaleTimes) {
+    id staleTime = _cacheStaleTimes[cacheKey];
+    if (staleTime) {
+      if ([[NSDate new] compare:(NSDate *)staleTime] == NSOrderedDescending) {
+        // cached image has expired, clear it out to make room for others
+        [_cacheStaleTimes removeObjectForKey:cacheKey];
+        [_decodedImageCache removeObjectForKey:cacheKey];
+        return nil;
+      }
+    }
+  }
   return [_decodedImageCache objectForKey:cacheKey];
 }
 
@@ -95,9 +110,46 @@ - (void)addImageToCache:(UIImage *)image
                   scale:(CGFloat)scale
              resizeMode:(RCTResizeMode)resizeMode
            responseDate:(NSString *)responseDate
+           cacheControl:(NSString *)cacheControl
 {
-  NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode, responseDate);
-  return [self addImageToCache:image forKey:cacheKey];
+  NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode);
+  BOOL shouldCache = YES;
+  NSDate *staleTime;
+  NSArray<NSString *> *components = [cacheControl componentsSeparatedByString:@","];
+  for (NSString *component in components) {
+    if ([component containsString:@"no-cache"] || [component containsString:@"no-store"] || [component hasSuffix:@"max-age=0"]) {
+      shouldCache = NO;
+      break;
+    } else {
+      NSRange range = [component rangeOfString:@"max-age="];
+      if (range.location != NSNotFound) {
+        NSInteger seconds = [[component substringFromIndex:range.location + range.length] integerValue];
+        NSDate *originalDate = [self dateWithHeaderString:responseDate];
+        staleTime = [originalDate dateByAddingTimeInterval:(NSTimeInterval)seconds];
+      }
+    }
+  }
+  if (shouldCache) {
+    if (staleTime) {
+      @synchronized(_cacheStaleTimes) {
+        _cacheStaleTimes[cacheKey] = staleTime;
+      }
+    }
+    return [self addImageToCache:image forKey:cacheKey];
+  }
+}
+
+- (NSDate *)dateWithHeaderString:(NSString *)headerDateString {
+  static NSDateFormatter *formatter;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    formatter = [[NSDateFormatter alloc] init];
+    formatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
+    formatter.dateFormat = @"EEE',' dd MMM yyyy HH':'mm':'ss 'GMT'";
+    formatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
+  });
+
+  return [formatter dateFromString:headerDateString];
 }
 
 @end
diff --git a/Libraries/Image/RCTImageEditingManager.h b/Libraries/Image/RCTImageEditingManager.h
index dda409af33fc22..684855f999e3b1 100644
--- a/Libraries/Image/RCTImageEditingManager.h
+++ b/Libraries/Image/RCTImageEditingManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageEditingManager.m b/Libraries/Image/RCTImageEditingManager.m
index 2a7d33cbcb13fd..c38e74ac0b93ad 100644
--- a/Libraries/Image/RCTImageEditingManager.m
+++ b/Libraries/Image/RCTImageEditingManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageLoader.h b/Libraries/Image/RCTImageLoader.h
index e44b4af26f1b6f..e9851af08fe6c9 100644
--- a/Libraries/Image/RCTImageLoader.h
+++ b/Libraries/Image/RCTImageLoader.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,15 +24,15 @@ typedef dispatch_block_t RCTImageLoaderCancellationBlock;
 - (UIImage *)imageForUrl:(NSString *)url
                     size:(CGSize)size
                    scale:(CGFloat)scale
-              resizeMode:(RCTResizeMode)resizeMode
-            responseDate:(NSString *)responseDate;
+              resizeMode:(RCTResizeMode)resizeMode;
 
 - (void)addImageToCache:(UIImage *)image
                     URL:(NSString *)url
                    size:(CGSize)size
                   scale:(CGFloat)scale
              resizeMode:(RCTResizeMode)resizeMode
-           responseDate:(NSString *)responseDate;
+           responseDate:(NSString *)responseDate
+           cacheControl:(NSString *)cacheControl;
 
 @end
 
@@ -129,6 +129,14 @@ typedef dispatch_block_t RCTImageLoaderCancellationBlock;
  */
 - (RCTImageLoaderCancellationBlock)getImageSizeForURLRequest:(NSURLRequest *)imageURLRequest
                                                        block:(void(^)(NSError *error, CGSize size))completionBlock;
+/**
+ * Determines whether given image URLs are cached locally. The `requests` array is expected
+ * to contain objects convertible to NSURLRequest. The return value maps URLs to strings:
+ * "disk" for images known to be cached in non-volatile storage, "memory" for images known
+ * to be cached in memory. Dictionary items corresponding to images that are not known to be
+ * cached are simply missing.
+ */
+- (NSDictionary *)getImageCacheStatus:(NSArray *)requests;
 
 /**
  * Allows developers to set their own caching implementation for
diff --git a/Libraries/Image/RCTImageLoader.m b/Libraries/Image/RCTImageLoader.m
index 7ec9df6176a0af..1436cc9a69f806 100644
--- a/Libraries/Image/RCTImageLoader.m
+++ b/Libraries/Image/RCTImageLoader.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -322,7 +322,7 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
                                                        resizeMode:(RCTResizeMode)resizeMode
                                                     progressBlock:(RCTImageLoaderProgressBlock)progressHandler
                                                  partialLoadBlock:(RCTImageLoaderPartialLoadBlock)partialLoadHandler
-                                                  completionBlock:(void (^)(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate))completionBlock
+                                                  completionBlock:(void (^)(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate, NSString *cacheControl))completionBlock
 {
     {
         NSMutableURLRequest *mutableRequest = [request mutableCopy];
@@ -345,15 +345,15 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
     BOOL requiresScheduling = [loadHandler respondsToSelector:@selector(requiresScheduling)] ?
     [loadHandler requiresScheduling] : YES;
 
+    BOOL cacheResult = [loadHandler respondsToSelector:@selector(shouldCacheLoadedImages)] ?
+    [loadHandler shouldCacheLoadedImages] : YES;
+
     __block atomic_bool cancelled = ATOMIC_VAR_INIT(NO);
     // TODO: Protect this variable shared between threads.
     __block dispatch_block_t cancelLoad = nil;
-    void (^completionHandler)(NSError *, id, NSString *) = ^(NSError *error, id imageOrData, NSString *fetchDate) {
+    void (^completionHandler)(NSError *, id, NSString *, NSString *) = ^(NSError *error, id imageOrData, NSString *fetchDate, NSString *cacheControl) {
         cancelLoad = nil;
 
-        BOOL cacheResult = [loadHandler respondsToSelector:@selector(shouldCacheLoadedImages)] ?
-        [loadHandler shouldCacheLoadedImages] : YES;
-
         // If we've received an image, we should try to set it synchronously,
         // if it's data, do decoding on a background thread.
         if (RCTIsMainQueue() && ![imageOrData isKindOfClass:[UIImage class]]) {
@@ -361,11 +361,11 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
             // expecting it, and may do expensive post-processing in the callback
             dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                 if (!atomic_load(&cancelled)) {
-                    completionBlock(error, imageOrData, cacheResult, fetchDate);
+                    completionBlock(error, imageOrData, cacheResult, fetchDate, cacheControl);
                 }
             });
         } else if (!atomic_load(&cancelled)) {
-            completionBlock(error, imageOrData, cacheResult, fetchDate);
+            completionBlock(error, imageOrData, cacheResult, fetchDate, cacheControl);
         }
     };
 
@@ -379,7 +379,7 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
                             progressHandler:progressHandler
                          partialLoadHandler:partialLoadHandler
                           completionHandler:^(NSError *error, UIImage *image){
-                              completionHandler(error, image, nil);
+                              completionHandler(error, image, nil, nil);
                           }];
     }
 
@@ -403,13 +403,25 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
                                       progressHandler:progressHandler
                                    partialLoadHandler:partialLoadHandler
                                     completionHandler:^(NSError *error, UIImage *image) {
-                                        completionHandler(error, image, nil);
+                                        completionHandler(error, image, nil, nil);
                                     }];
         } else {
-            // Use networking module to load image
-            cancelLoad = [strongSelf _loadURLRequest:request
-                                       progressBlock:progressHandler
-                                     completionBlock:completionHandler];
+            UIImage *image;
+            if (cacheResult) {
+                image = [[strongSelf imageCache] imageForUrl:request.URL.absoluteString
+                                                        size:size
+                                                       scale:scale
+                                                  resizeMode:resizeMode];
+            }
+
+            if (image) {
+                completionHandler(nil, image, nil, nil);
+            } else {
+                // Use networking module to load image
+                cancelLoad = [strongSelf _loadURLRequest:request
+                                           progressBlock:progressHandler
+                                         completionBlock:completionHandler];
+            }
         }
     });
 
@@ -428,7 +440,7 @@ - (RCTImageLoaderCancellationBlock)_loadImageOrDataWithURLRequest:(NSURLRequest
 
 - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
                                      progressBlock:(RCTImageLoaderProgressBlock)progressHandler
-                                   completionBlock:(void (^)(NSError *error, id imageOrData, NSString *fetchDate))completionHandler
+                                   completionBlock:(void (^)(NSError *error, id imageOrData, NSString *fetchDate, NSString *cacheControl))completionHandler
 {
     // Check if networking module is available
     if (RCT_DEBUG && ![_bridge respondsToSelector:@selector(networking)]) {
@@ -450,18 +462,19 @@ - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
     RCTURLRequestCompletionBlock processResponse = ^(NSURLResponse *response, NSData *data, NSError *error) {
         // Check for system errors
         if (error) {
-            completionHandler(error, nil, nil);
+            completionHandler(error, nil, nil, nil);
             return;
         } else if (!response) {
-            completionHandler(RCTErrorWithMessage(@"Response metadata error"), nil, nil);
+            completionHandler(RCTErrorWithMessage(@"Response metadata error"), nil, nil, nil);
             return;
         } else if (!data) {
-            completionHandler(RCTErrorWithMessage(@"Unknown image download error"), nil, nil);
+            completionHandler(RCTErrorWithMessage(@"Unknown image download error"), nil, nil, nil);
             return;
         }
 
         // Check for http errors
         NSString *responseDate;
+        NSString *cacheControl;
         if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
             NSInteger statusCode = ((NSHTTPURLResponse *)response).statusCode;
             if (statusCode != 200) {
@@ -469,15 +482,16 @@ - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
                 NSDictionary *userInfo = @{NSLocalizedDescriptionKey: errorMessage};
                 completionHandler([[NSError alloc] initWithDomain:NSURLErrorDomain
                                                              code:statusCode
-                                                         userInfo:userInfo], nil, nil);
+                                                         userInfo:userInfo], nil, nil, nil);
                 return;
             }
 
             responseDate = ((NSHTTPURLResponse *)response).allHeaderFields[@"Date"];
+            cacheControl = ((NSHTTPURLResponse *)response).allHeaderFields[@"Cache-Control"];
         }
 
         // Call handler
-        completionHandler(nil, data, responseDate);
+        completionHandler(nil, data, responseDate, cacheControl);
     };
 
     // Download image
@@ -499,7 +513,7 @@ - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
                                } else {
                                    someError = RCTErrorWithMessage(@"Unknown image download error");
                                }
-                               completionHandler(someError, nil, nil);
+                               completionHandler(someError, nil, nil, nil);
                                [strongSelf dequeueTasks];
                                return;
                            }
@@ -565,7 +579,7 @@ - (RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)image
     };
 
     __weak RCTImageLoader *weakSelf = self;
-    void (^completionHandler)(NSError *, id, BOOL, NSString *) = ^(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate) {
+    void (^completionHandler)(NSError *, id, BOOL, NSString *, NSString *) = ^(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate, NSString *cacheControl) {
         __typeof(self) strongSelf = weakSelf;
         if (atomic_load(&cancelled) || !strongSelf) {
             return;
@@ -577,20 +591,6 @@ - (RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)image
             return;
         }
 
-        // Check decoded image cache
-        if (cacheResult) {
-            UIImage *image = [[strongSelf imageCache] imageForUrl:imageURLRequest.URL.absoluteString
-                                                             size:size
-                                                            scale:scale
-                                                       resizeMode:resizeMode
-                                                     responseDate:fetchDate];
-            if (image) {
-                cancelLoad = nil;
-                completionBlock(nil, image);
-                return;
-            }
-        }
-
         RCTImageLoaderCompletionBlock decodeCompletionHandler = ^(NSError *error_, UIImage *image) {
             if (cacheResult && image) {
                 // Store decoded image in cache
@@ -599,7 +599,8 @@ - (RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)image
                                                     size:size
                                                    scale:scale
                                               resizeMode:resizeMode
-                                            responseDate:fetchDate];
+                                            responseDate:fetchDate
+                                            cacheControl:cacheControl];
             }
 
             cancelLoad = nil;
@@ -735,7 +736,7 @@ - (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)data
 - (RCTImageLoaderCancellationBlock)getImageSizeForURLRequest:(NSURLRequest *)imageURLRequest
                                                        block:(void(^)(NSError *error, CGSize size))callback
 {
-    void (^completion)(NSError *, id, BOOL, NSString *) = ^(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate) {
+    void (^completion)(NSError *, id, BOOL, NSString *, NSString *) = ^(NSError *error, id imageOrData, BOOL cacheResult, NSString *fetchDate, NSString *cacheControl) {
         CGSize size;
         if ([imageOrData isKindOfClass:[NSData class]]) {
             NSDictionary *meta = RCTGetImageMetadata(imageOrData);
@@ -783,45 +784,69 @@ - (RCTImageLoaderCancellationBlock)getImageSizeForURLRequest:(NSURLRequest *)ima
                                 completionBlock:completion];
 }
 
-#pragma mark - RCTURLRequestHandler
-
-- (BOOL)canHandleRequest:(NSURLRequest *)request
+- (NSDictionary *)getImageCacheStatus:(NSArray *)requests
 {
-    NSURL *requestURL = request.URL;
-
-    // If the data being loaded is a video, return NO
-    // Even better may be to implement this on the RCTImageURLLoader that would try to load it,
-    // but we'd have to run the logic both in RCTPhotoLibraryImageLoader and
-    // RCTAssetsLibraryRequestHandler. Once we drop iOS7 though, we'd drop
-    // RCTAssetsLibraryRequestHandler and can move it there.
-    static NSRegularExpression *videoRegex = nil;
-    if (!videoRegex) {
-      NSError *error = nil;
-      videoRegex = [NSRegularExpression regularExpressionWithPattern:@"(?:&|^)ext=MOV(?:&|$)"
-                                                             options:NSRegularExpressionCaseInsensitive
-                                                               error:&error];
-      if (error) {
-        RCTLogError(@"%@", error);
+  NSMutableDictionary *results = [NSMutableDictionary dictionary];
+  for (id request in requests) {
+    NSURLRequest *urlRequest = [RCTConvert NSURLRequest:request];
+    if (urlRequest) {
+      NSCachedURLResponse *cachedResponse = [NSURLCache.sharedURLCache cachedResponseForRequest:urlRequest];
+      if (cachedResponse) {
+        if (cachedResponse.storagePolicy == NSURLCacheStorageAllowedInMemoryOnly) {
+          [results setObject:@"memory" forKey:urlRequest.URL.absoluteString];
+        } else {
+          [results setObject:@"disk" forKey:urlRequest.URL.absoluteString];
+        }
       }
     }
+  }
+  return results;
+}
 
-    NSString *query = requestURL.query;
-    if (query != nil && [videoRegex firstMatchInString:query
-                                               options:0
-                                                 range:NSMakeRange(0, query.length)]) {
-      return NO;
-    }
+#pragma mark - RCTURLRequestHandler
 
-    for (id<RCTImageURLLoader> loader in _loaders) {
-        // Don't use RCTImageURLLoader protocol for modules that already conform to
-        // RCTURLRequestHandler as it's inefficient to decode an image and then
-        // convert it back into data
-        if (![loader conformsToProtocol:@protocol(RCTURLRequestHandler)] &&
-            [loader canLoadImageURL:requestURL]) {
-            return YES;
-        }
+- (BOOL)canHandleRequest:(NSURLRequest *)request
+{
+  NSURL *requestURL = request.URL;
+
+  // If the data being loaded is a video, return NO
+  // Even better may be to implement this on the RCTImageURLLoader that would try to load it,
+  // but we'd have to run the logic both in RCTPhotoLibraryImageLoader and
+  // RCTAssetsLibraryRequestHandler. Once we drop iOS7 though, we'd drop
+  // RCTAssetsLibraryRequestHandler and can move it there.
+  static NSRegularExpression *videoRegex;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSError *error = nil;
+    videoRegex = [NSRegularExpression regularExpressionWithPattern:@"(?:&|^)ext=MOV(?:&|$)"
+                                                           options:NSRegularExpressionCaseInsensitive
+                                                             error:&error];
+    if (error) {
+      RCTLogError(@"%@", error);
     }
+  });
+
+  NSString *query = requestURL.query;
+  if (
+    query != nil &&
+    [videoRegex firstMatchInString:query
+                           options:0
+                             range:NSMakeRange(0, query.length)]
+  ) {
     return NO;
+  }
+
+  for (id<RCTImageURLLoader> loader in _loaders) {
+    // Don't use RCTImageURLLoader protocol for modules that already conform to
+    // RCTURLRequestHandler as it's inefficient to decode an image and then
+    // convert it back into data
+    if (![loader conformsToProtocol:@protocol(RCTURLRequestHandler)] &&
+      [loader canLoadImageURL:requestURL]) {
+      return YES;
+    }
+  }
+
+  return NO;
 }
 
 - (id)sendRequest:(NSURLRequest *)request withDelegate:(id<RCTURLRequestDelegate>)delegate
diff --git a/Libraries/Image/RCTImageShadowView.h b/Libraries/Image/RCTImageShadowView.h
index 168f0f4c1de86d..f79281e731ad99 100644
--- a/Libraries/Image/RCTImageShadowView.h
+++ b/Libraries/Image/RCTImageShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageShadowView.m b/Libraries/Image/RCTImageShadowView.m
index c9ba82e32188cc..9102dc1b3b0b73 100644
--- a/Libraries/Image/RCTImageShadowView.m
+++ b/Libraries/Image/RCTImageShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageStoreManager.h b/Libraries/Image/RCTImageStoreManager.h
index f790ccd5dff984..5d37eed2caecc5 100644
--- a/Libraries/Image/RCTImageStoreManager.h
+++ b/Libraries/Image/RCTImageStoreManager.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageStoreManager.m b/Libraries/Image/RCTImageStoreManager.m
index d74b7c596cf44e..1cecbf1c3fed76 100644
--- a/Libraries/Image/RCTImageStoreManager.m
+++ b/Libraries/Image/RCTImageStoreManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageUtils.h b/Libraries/Image/RCTImageUtils.h
index 645e99ba4ee326..49091ac22f0206 100644
--- a/Libraries/Image/RCTImageUtils.h
+++ b/Libraries/Image/RCTImageUtils.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageUtils.m b/Libraries/Image/RCTImageUtils.m
index 14a3010206470a..4a5cd006dc6d3a 100644
--- a/Libraries/Image/RCTImageUtils.m
+++ b/Libraries/Image/RCTImageUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageView.h b/Libraries/Image/RCTImageView.h
index 9931c6715a8d7e..77129f8b815730 100644
--- a/Libraries/Image/RCTImageView.h
+++ b/Libraries/Image/RCTImageView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageView.m b/Libraries/Image/RCTImageView.m
index 54e33d23958c7f..bdd58abf7a5215 100644
--- a/Libraries/Image/RCTImageView.m
+++ b/Libraries/Image/RCTImageView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageViewManager.h b/Libraries/Image/RCTImageViewManager.h
index f718a70246ef41..9aef96cd72a957 100644
--- a/Libraries/Image/RCTImageViewManager.h
+++ b/Libraries/Image/RCTImageViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTImageViewManager.m b/Libraries/Image/RCTImageViewManager.m
index be9a3619f0407f..65e6be858641eb 100644
--- a/Libraries/Image/RCTImageViewManager.m
+++ b/Libraries/Image/RCTImageViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -84,4 +84,11 @@ - (RCTPlatformView *)view // TODO(macOS ISS#2323203)
                                           }];
 }
 
+RCT_EXPORT_METHOD(queryCache:(NSArray *)requests
+                  resolve:(RCTPromiseResolveBlock)resolve
+                  reject:(RCTPromiseRejectBlock)reject)
+{
+  resolve([self.bridge.imageLoader getImageCacheStatus:requests]);
+}
+
 @end
diff --git a/Libraries/Image/RCTLocalAssetImageLoader.h b/Libraries/Image/RCTLocalAssetImageLoader.h
index 4cd79bd403c5a2..df3918ad548c1a 100644
--- a/Libraries/Image/RCTLocalAssetImageLoader.h
+++ b/Libraries/Image/RCTLocalAssetImageLoader.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTLocalAssetImageLoader.m b/Libraries/Image/RCTLocalAssetImageLoader.m
index 091cd70e0eafef..68407f38064ab0 100644
--- a/Libraries/Image/RCTLocalAssetImageLoader.m
+++ b/Libraries/Image/RCTLocalAssetImageLoader.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTResizeMode.h b/Libraries/Image/RCTResizeMode.h
index d6b57333338140..f175d958fa33e7 100644
--- a/Libraries/Image/RCTResizeMode.h
+++ b/Libraries/Image/RCTResizeMode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RCTResizeMode.m b/Libraries/Image/RCTResizeMode.m
index 1094b7ff96e8c9..34027f8e8a2ec0 100644
--- a/Libraries/Image/RCTResizeMode.m
+++ b/Libraries/Image/RCTResizeMode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/RelativeImageStub.js b/Libraries/Image/RelativeImageStub.js
index dcdeb9b916ac45..f5592d18167102 100644
--- a/Libraries/Image/RelativeImageStub.js
+++ b/Libraries/Image/RelativeImageStub.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/TextInlineImageNativeComponent.js b/Libraries/Image/TextInlineImageNativeComponent.js
new file mode 100644
index 00000000000000..6cbe56362576f9
--- /dev/null
+++ b/Libraries/Image/TextInlineImageNativeComponent.js
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const requireNativeComponent = require('requireNativeComponent');
+
+const TextInlineImage = requireNativeComponent('RCTTextInlineImage');
+
+module.exports = TextInlineImage;
diff --git a/Libraries/Image/__tests__/assetRelativePathInSnapshot.js b/Libraries/Image/__tests__/assetRelativePathInSnapshot.js
index 973d7171c0cd56..13cb6ac075f81e 100644
--- a/Libraries/Image/__tests__/assetRelativePathInSnapshot.js
+++ b/Libraries/Image/__tests__/assetRelativePathInSnapshot.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/__tests__/resolveAssetSource-test.js b/Libraries/Image/__tests__/resolveAssetSource-test.js
index c22f32a6520413..fb297899f6655a 100644
--- a/Libraries/Image/__tests__/resolveAssetSource-test.js
+++ b/Libraries/Image/__tests__/resolveAssetSource-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/nativeImageSource.js b/Libraries/Image/nativeImageSource.js
index d703aedb3a837d..33bc5de87bcd9b 100644
--- a/Libraries/Image/nativeImageSource.js
+++ b/Libraries/Image/nativeImageSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Image/resolveAssetSource.js b/Libraries/Image/resolveAssetSource.js
index 9c811e574400b1..ebd19e3354fe6e 100644
--- a/Libraries/Image/resolveAssetSource.js
+++ b/Libraries/Image/resolveAssetSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Inspector/BorderBox.js b/Libraries/Inspector/BorderBox.js
index 2110953dd36029..93d0dd158e14d1 100644
--- a/Libraries/Inspector/BorderBox.js
+++ b/Libraries/Inspector/BorderBox.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Inspector/BoxInspector.js b/Libraries/Inspector/BoxInspector.js
index f2b5e44df433b9..6097402a91c0c2 100644
--- a/Libraries/Inspector/BoxInspector.js
+++ b/Libraries/Inspector/BoxInspector.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -87,12 +87,6 @@ const styles = StyleSheet.create({
     textAlign: 'left',
     top: -3,
   },
-  buffer: {
-    fontSize: 10,
-    color: 'yellow',
-    flex: 1,
-    textAlign: 'center',
-  },
   innerText: {
     color: 'yellow',
     fontSize: 12,
diff --git a/Libraries/Inspector/ElementBox.js b/Libraries/Inspector/ElementBox.js
index ee7ccdf3259b8f..d360485bcbe5f5 100644
--- a/Libraries/Inspector/ElementBox.js
+++ b/Libraries/Inspector/ElementBox.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Inspector/ElementProperties.js b/Libraries/Inspector/ElementProperties.js
index 1e360944716fd2..9b6c222ed5babd 100644
--- a/Libraries/Inspector/ElementProperties.js
+++ b/Libraries/Inspector/ElementProperties.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,6 @@
 'use strict';
 
 const BoxInspector = require('BoxInspector');
-const PropTypes = require('prop-types');
 const React = require('React');
 const StyleInspector = require('StyleInspector');
 const StyleSheet = require('StyleSheet');
@@ -24,32 +23,23 @@ const flattenStyle = require('flattenStyle');
 const mapWithSeparator = require('mapWithSeparator');
 const openFileInEditor = require('openFileInEditor');
 
-import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
+import type {ViewStyleProp} from 'StyleSheet';
 
-class ElementProperties extends React.Component<{
-  hierarchy: Array<$FlowFixMe>,
-  style?: DangerouslyImpreciseStyleProp,
-  source?: {
+type Props = $ReadOnly<{|
+  hierarchy: Array<{|name: string|}>,
+  style?: ?ViewStyleProp,
+  source?: ?{
     fileName?: string,
     lineNumber?: number,
   },
-}> {
-  static propTypes = {
-    hierarchy: PropTypes.array.isRequired,
-    style: PropTypes.oneOfType([
-      PropTypes.object,
-      PropTypes.array,
-      PropTypes.number,
-    ]),
-    source: PropTypes.shape({
-      fileName: PropTypes.string,
-      lineNumber: PropTypes.number,
-    }),
-  };
+  frame?: ?Object,
+  selection?: ?number,
+  setSelection?: number => mixed,
+|}>;
 
+class ElementProperties extends React.Component<Props> {
   render() {
     const style = flattenStyle(this.props.style);
-    // $FlowFixMe found when converting React.createClass to ES6
     const selection = this.props.selection;
     let openFileButton;
     const source = this.props.source;
@@ -96,10 +86,7 @@ class ElementProperties extends React.Component<{
               <StyleInspector style={style} />
               {openFileButton}
             </View>
-            {
-              // $FlowFixMe found when converting React.createClass to ES6
-              <BoxInspector style={style} frame={this.props.frame} />
-            }
+            {<BoxInspector style={style} frame={this.props.frame} />}
           </View>
         </View>
       </TouchableWithoutFeedback>
diff --git a/Libraries/Inspector/Inspector.js b/Libraries/Inspector/Inspector.js
index a5ab122b0cde5b..86d519258b62ed 100644
--- a/Libraries/Inspector/Inspector.js
+++ b/Libraries/Inspector/Inspector.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,10 +21,6 @@ const Touchable = require('Touchable');
 const UIManager = require('UIManager');
 const View = require('View');
 
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const emptyObject = require('fbjs/lib/emptyObject');
 const invariant = require('fbjs/lib/invariant');
 
 export type ReactRenderer = {
@@ -131,7 +127,7 @@ class Inspector extends React.Component<
           hierarchy: [],
           inspected: {
             frame: {left, top, width, height},
-            style: props ? props.style : emptyObject,
+            style: props ? props.style : {},
           },
         });
       });
diff --git a/Libraries/Inspector/InspectorOverlay.js b/Libraries/Inspector/InspectorOverlay.js
index 4de9cb2ab8183e..79e2156111c1e2 100644
--- a/Libraries/Inspector/InspectorOverlay.js
+++ b/Libraries/Inspector/InspectorOverlay.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,33 +12,29 @@
 
 const Dimensions = require('Dimensions');
 const ElementBox = require('ElementBox');
-const PropTypes = require('prop-types');
 const React = require('React');
 const StyleSheet = require('StyleSheet');
 const UIManager = require('UIManager');
 const View = require('View');
 
+import type {ViewStyleProp} from 'StyleSheet';
+
 type EventLike = {
   nativeEvent: Object,
 };
 
-class InspectorOverlay extends React.Component<{
-  inspected?: {
-    frame?: Object,
-    style?: any,
-  },
-  inspectedViewTag?: number,
-  onTouchViewTag: (tag: number, frame: Object, pointerY: number) => void,
-}> {
-  static propTypes = {
-    inspected: PropTypes.shape({
-      frame: PropTypes.object,
-      style: PropTypes.any,
-    }),
-    inspectedViewTag: PropTypes.number,
-    onTouchViewTag: PropTypes.func.isRequired,
-  };
+type Inspected = $ReadOnly<{|
+  frame?: Object,
+  style?: ViewStyleProp,
+|}>;
+
+type Props = $ReadOnly<{|
+  inspected?: Inspected,
+  inspectedViewTag?: ?number,
+  onTouchViewTag: (tag: number, frame: Object, pointerY: number) => mixed,
+|}>;
 
+class InspectorOverlay extends React.Component<Props> {
   findViewForTouchEvent = (e: EventLike) => {
     const {locationX, locationY} = e.nativeEvent.touches[0];
     UIManager.findSubviewIn(
diff --git a/Libraries/Inspector/InspectorPanel.js b/Libraries/Inspector/InspectorPanel.js
index d1b6d0eaf003bf..42c191d7ed530c 100644
--- a/Libraries/Inspector/InspectorPanel.js
+++ b/Libraries/Inspector/InspectorPanel.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,14 +14,43 @@ const ElementProperties = require('ElementProperties');
 const NetworkOverlay = require('NetworkOverlay');
 const PerformanceOverlay = require('PerformanceOverlay');
 const React = require('React');
-const PropTypes = require('prop-types');
 const ScrollView = require('ScrollView');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
 const TouchableHighlight = require('TouchableHighlight');
 const View = require('View');
 
-class InspectorPanel extends React.Component<$FlowFixMeProps> {
+import type {ViewStyleProp} from 'StyleSheet';
+
+type Props = $ReadOnly<{|
+  devtoolsIsOpen: boolean,
+  inspecting: boolean,
+  setInspecting: (val: boolean) => void,
+  perfing: boolean,
+  setPerfing: (val: boolean) => void,
+  touchTargeting: boolean,
+  setTouchTargeting: (val: boolean) => void,
+  networking: boolean,
+  setNetworking: (val: boolean) => void,
+  hierarchy?: ?Array<{|name: string|}>,
+  selection?: ?number,
+  setSelection: number => mixed,
+  inspected?: ?$ReadOnly<{|
+    style?: ?ViewStyleProp,
+    frame?: ?$ReadOnly<{|
+      top?: ?number,
+      left?: ?number,
+      width?: ?number,
+      height: ?number,
+    |}>,
+    source?: ?{|
+      fileName?: string,
+      lineNumber?: number,
+    |},
+  |}>,
+|}>;
+
+class InspectorPanel extends React.Component<Props> {
   renderWaiting() {
     if (this.props.inspecting) {
       return (
@@ -40,6 +69,7 @@ class InspectorPanel extends React.Component<$FlowFixMeProps> {
             style={this.props.inspected.style}
             frame={this.props.inspected.frame}
             source={this.props.inspected.source}
+            // $FlowFixMe: Hierarchy should be non-nullable
             hierarchy={this.props.hierarchy}
             selection={this.props.selection}
             setSelection={this.props.setSelection}
@@ -57,22 +87,22 @@ class InspectorPanel extends React.Component<$FlowFixMeProps> {
       <View style={styles.container}>
         {!this.props.devtoolsIsOpen && contents}
         <View style={styles.buttonRow}>
-          <Button
+          <InspectorPanelButton
             title={'Inspect'}
             pressed={this.props.inspecting}
             onClick={this.props.setInspecting}
           />
-          <Button
+          <InspectorPanelButton
             title={'Perf'}
             pressed={this.props.perfing}
             onClick={this.props.setPerfing}
           />
-          <Button
+          <InspectorPanelButton
             title={'Network'}
             pressed={this.props.networking}
             onClick={this.props.setNetworking}
           />
-          <Button
+          <InspectorPanelButton
             title={'Touchables'}
             pressed={this.props.touchTargeting}
             onClick={this.props.setTouchTargeting}
@@ -83,20 +113,13 @@ class InspectorPanel extends React.Component<$FlowFixMeProps> {
   }
 }
 
-InspectorPanel.propTypes = {
-  devtoolsIsOpen: PropTypes.bool,
-  inspecting: PropTypes.bool,
-  setInspecting: PropTypes.func,
-  inspected: PropTypes.object,
-  perfing: PropTypes.bool,
-  setPerfing: PropTypes.func,
-  touchTargeting: PropTypes.bool,
-  setTouchTargeting: PropTypes.func,
-  networking: PropTypes.bool,
-  setNetworking: PropTypes.func,
-};
+type InspectorPanelButtonProps = $ReadOnly<{|
+  onClick: (val: boolean) => void,
+  pressed: boolean,
+  title: string,
+|}>;
 
-class Button extends React.Component<$FlowFixMeProps> {
+class InspectorPanelButton extends React.Component<InspectorPanelButtonProps> {
   render() {
     return (
       <TouchableHighlight
diff --git a/Libraries/Inspector/NetworkOverlay.js b/Libraries/Inspector/NetworkOverlay.js
index ee60a7e004928b..90f143b45669be 100644
--- a/Libraries/Inspector/NetworkOverlay.js
+++ b/Libraries/Inspector/NetworkOverlay.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 
 'use strict';
 
-const ListView = require('ListView');
+const FlatList = require('FlatList');
 const React = require('React');
 const ScrollView = require('ScrollView');
 const StyleSheet = require('StyleSheet');
@@ -21,12 +21,12 @@ const WebSocketInterceptor = require('WebSocketInterceptor');
 const XHRInterceptor = require('XHRInterceptor');
 
 const LISTVIEW_CELL_HEIGHT = 15;
-const SEPARATOR_THICKNESS = 2;
 
 // Global id for the intercepted XMLHttpRequest objects.
 let nextXHRId = 0;
 
 type NetworkRequestInfo = {
+  id: number,
   type?: string,
   url?: string,
   method?: string,
@@ -46,61 +46,57 @@ type NetworkRequestInfo = {
   serverError?: Object,
 };
 
+type Props = $ReadOnly<{||}>;
+type State = {|
+  detailRowId: ?number,
+  requests: Array<NetworkRequestInfo>,
+|};
+
+function getStringByValue(value: any): string {
+  if (value === undefined) {
+    return 'undefined';
+  }
+  if (typeof value === 'object') {
+    return JSON.stringify(value);
+  }
+  if (typeof value === 'string' && value.length > 500) {
+    return String(value)
+      .substr(0, 500)
+      .concat('\n***TRUNCATED TO 500 CHARACTERS***');
+  }
+  return value;
+}
+
+function getTypeShortName(type: any): string {
+  if (type === 'XMLHttpRequest') {
+    return 'XHR';
+  } else if (type === 'WebSocket') {
+    return 'WS';
+  }
+
+  return '';
+}
+
+function keyExtractor(request: NetworkRequestInfo): string {
+  return String(request.id);
+}
+
 /**
  * Show all the intercepted network requests over the InspectorPanel.
  */
-class NetworkOverlay extends React.Component<
-  Object,
-  {
-    dataSource: ListView.DataSource,
-    newDetailInfo: boolean,
-    detailRowID: ?number,
-  },
-> {
-  _requests: Array<NetworkRequestInfo>;
-  _listViewDataSource: ListView.DataSource;
-  _listView: ?ListView;
-  _listViewHighlighted: boolean;
-  _listViewHeight: number;
-  _scrollView: ?ScrollView;
-  _detailViewItems: Array<Array<React.Element<any>>>;
-  _listViewOnLayout: (event: Event) => void;
-  _captureRequestListView: (listRef: ?ListView) => void;
-  _captureDetailScrollView: (scrollRef: ?ScrollView) => void;
-  _renderRow: (
-    rowData: NetworkRequestInfo,
-    sectionID: number,
-    rowID: number,
-    highlightRow: (sectionID: number, rowID: number) => void,
-  ) => React.Element<any>;
-  _closeButtonClicked: () => void;
-  // Map of `socketId` -> `index in `_requests``.
-  _socketIdMap: Object;
-  // Map of `xhr._index` -> `index in `_requests``.
-  _xhrIdMap: {[key: number]: number};
-
-  constructor(props: Object) {
-    super(props);
-    this._requests = [];
-    this._detailViewItems = [];
-    this._listViewDataSource = new ListView.DataSource({
-      rowHasChanged: (r1, r2) => r1 !== r2,
-    });
-    this.state = {
-      dataSource: this._listViewDataSource.cloneWithRows([]),
-      newDetailInfo: false,
-      detailRowID: null,
-    };
-    this._listViewHighlighted = false;
-    this._listViewHeight = 0;
-    this._captureRequestListView = this._captureRequestListView.bind(this);
-    this._captureDetailScrollView = this._captureDetailScrollView.bind(this);
-    this._listViewOnLayout = this._listViewOnLayout.bind(this);
-    this._renderRow = this._renderRow.bind(this);
-    this._closeButtonClicked = this._closeButtonClicked.bind(this);
-    this._socketIdMap = {};
-    this._xhrIdMap = {};
-  }
+class NetworkOverlay extends React.Component<Props, State> {
+  _requestsListView: ?React.ElementRef<typeof FlatList>;
+  _detailScrollView: ?React.ElementRef<typeof ScrollView>;
+
+  // Map of `socketId` -> `index in `this.state.requests`.
+  _socketIdMap = {};
+  // Map of `xhr._index` -> `index in `this.state.requests`.
+  _xhrIdMap: {[key: number]: number} = {};
+
+  state = {
+    detailRowId: null,
+    requests: [],
+  };
 
   _enableXHRInterception(): void {
     if (XHRInterceptor.isInterceptorEnabled()) {
@@ -112,20 +108,20 @@ class NetworkOverlay extends React.Component<
       // to the xhr object as a private `_index` property to identify it,
       // so that we can distinguish different xhr objects in callbacks.
       xhr._index = nextXHRId++;
-      const xhrIndex = this._requests.length;
+      const xhrIndex = this.state.requests.length;
       this._xhrIdMap[xhr._index] = xhrIndex;
 
       const _xhr: NetworkRequestInfo = {
+        id: xhrIndex,
         type: 'XMLHttpRequest',
         method: method,
         url: url,
       };
-      this._requests.push(_xhr);
-      this._detailViewItems.push([]);
-      this._genDetailViewItem(xhrIndex);
       this.setState(
-        {dataSource: this._listViewDataSource.cloneWithRows(this._requests)},
-        this._scrollToBottom(),
+        {
+          requests: this.state.requests.concat(_xhr),
+        },
+        this._scrollRequestsToBottom,
       );
     });
 
@@ -134,12 +130,15 @@ class NetworkOverlay extends React.Component<
       if (xhrIndex === -1) {
         return;
       }
-      const networkInfo = this._requests[xhrIndex];
-      if (!networkInfo.requestHeaders) {
-        networkInfo.requestHeaders = {};
-      }
-      networkInfo.requestHeaders[header] = value;
-      this._genDetailViewItem(xhrIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[xhrIndex];
+        if (!networkRequestInfo.requestHeaders) {
+          networkRequestInfo.requestHeaders = {};
+        }
+        networkRequestInfo.requestHeaders[header] = value;
+        return {requests};
+      });
     });
 
     XHRInterceptor.setSendCallback((data, xhr) => {
@@ -147,8 +146,12 @@ class NetworkOverlay extends React.Component<
       if (xhrIndex === -1) {
         return;
       }
-      this._requests[xhrIndex].dataSent = data;
-      this._genDetailViewItem(xhrIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[xhrIndex];
+        networkRequestInfo.dataSent = data;
+        return {requests};
+      });
     });
 
     XHRInterceptor.setHeaderReceivedCallback(
@@ -157,11 +160,14 @@ class NetworkOverlay extends React.Component<
         if (xhrIndex === -1) {
           return;
         }
-        const networkInfo = this._requests[xhrIndex];
-        networkInfo.responseContentType = type;
-        networkInfo.responseSize = size;
-        networkInfo.responseHeaders = responseHeaders;
-        this._genDetailViewItem(xhrIndex);
+
+        this.setState(({requests}) => {
+          const networkRequestInfo = requests[xhrIndex];
+          networkRequestInfo.responseContentType = type;
+          networkRequestInfo.responseSize = size;
+          networkRequestInfo.responseHeaders = responseHeaders;
+          return {requests};
+        });
       },
     );
 
@@ -171,13 +177,17 @@ class NetworkOverlay extends React.Component<
         if (xhrIndex === -1) {
           return;
         }
-        const networkInfo = this._requests[xhrIndex];
-        networkInfo.status = status;
-        networkInfo.timeout = timeout;
-        networkInfo.response = response;
-        networkInfo.responseURL = responseURL;
-        networkInfo.responseType = responseType;
-        this._genDetailViewItem(xhrIndex);
+
+        this.setState(({requests}) => {
+          const networkRequestInfo = requests[xhrIndex];
+          networkRequestInfo.status = status;
+          networkRequestInfo.timeout = timeout;
+          networkRequestInfo.response = response;
+          networkRequestInfo.responseURL = responseURL;
+          networkRequestInfo.responseType = responseType;
+
+          return {requests};
+        });
       },
     );
 
@@ -192,19 +202,19 @@ class NetworkOverlay extends React.Component<
     // Show the WebSocket request item in listView when 'connect' is called.
     WebSocketInterceptor.setConnectCallback(
       (url, protocols, options, socketId) => {
-        const socketIndex = this._requests.length;
+        const socketIndex = this.state.requests.length;
         this._socketIdMap[socketId] = socketIndex;
         const _webSocket: NetworkRequestInfo = {
+          id: socketIndex,
           type: 'WebSocket',
           url: url,
           protocols: protocols,
         };
-        this._requests.push(_webSocket);
-        this._detailViewItems.push([]);
-        this._genDetailViewItem(socketIndex);
         this.setState(
-          {dataSource: this._listViewDataSource.cloneWithRows(this._requests)},
-          this._scrollToBottom(),
+          {
+            requests: this.state.requests.concat(_webSocket),
+          },
+          this._scrollRequestsToBottom,
         );
       },
     );
@@ -216,10 +226,13 @@ class NetworkOverlay extends React.Component<
           return;
         }
         if (statusCode !== null && closeReason !== null) {
-          this._requests[socketIndex].status = statusCode;
-          this._requests[socketIndex].closeReason = closeReason;
+          this.setState(({requests}) => {
+            const networkRequestInfo = requests[socketIndex];
+            networkRequestInfo.status = statusCode;
+            networkRequestInfo.closeReason = closeReason;
+            return {requests};
+          });
         }
-        this._genDetailViewItem(socketIndex);
       },
     );
 
@@ -228,12 +241,17 @@ class NetworkOverlay extends React.Component<
       if (socketIndex === undefined) {
         return;
       }
-      if (!this._requests[socketIndex].messages) {
-        this._requests[socketIndex].messages = '';
-      }
-      this._requests[socketIndex].messages +=
-        'Sent: ' + JSON.stringify(data) + '\n';
-      this._genDetailViewItem(socketIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[socketIndex];
+
+        if (!networkRequestInfo.messages) {
+          networkRequestInfo.messages = '';
+        }
+        networkRequestInfo.messages += 'Sent: ' + JSON.stringify(data) + '\n';
+
+        return {requests};
+      });
     });
 
     WebSocketInterceptor.setOnMessageCallback((socketId, message) => {
@@ -241,12 +259,18 @@ class NetworkOverlay extends React.Component<
       if (socketIndex === undefined) {
         return;
       }
-      if (!this._requests[socketIndex].messages) {
-        this._requests[socketIndex].messages = '';
-      }
-      this._requests[socketIndex].messages +=
-        'Received: ' + JSON.stringify(message) + '\n';
-      this._genDetailViewItem(socketIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[socketIndex];
+
+        if (!networkRequestInfo.messages) {
+          networkRequestInfo.messages = '';
+        }
+        networkRequestInfo.messages +=
+          'Received: ' + JSON.stringify(message) + '\n';
+
+        return {requests};
+      });
     });
 
     WebSocketInterceptor.setOnCloseCallback((socketId, message) => {
@@ -254,8 +278,13 @@ class NetworkOverlay extends React.Component<
       if (socketIndex === undefined) {
         return;
       }
-      this._requests[socketIndex].serverClose = message;
-      this._genDetailViewItem(socketIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[socketIndex];
+        networkRequestInfo.serverClose = message;
+
+        return {requests};
+      });
     });
 
     WebSocketInterceptor.setOnErrorCallback((socketId, message) => {
@@ -263,8 +292,13 @@ class NetworkOverlay extends React.Component<
       if (socketIndex === undefined) {
         return;
       }
-      this._requests[socketIndex].serverError = message;
-      this._genDetailViewItem(socketIndex);
+
+      this.setState(({requests}) => {
+        const networkRequestInfo = requests[socketIndex];
+        networkRequestInfo.serverError = message;
+
+        return {requests};
+      });
     });
 
     // Fire above callbacks.
@@ -281,126 +315,100 @@ class NetworkOverlay extends React.Component<
     WebSocketInterceptor.disableInterception();
   }
 
-  _renderRow(
-    rowData: NetworkRequestInfo,
-    sectionID: number,
-    rowID: number,
-    highlightRow: (sectionID: number, rowID: number) => void,
-  ): React.Element<any> {
-    let urlCellViewStyle = styles.urlEvenCellView;
-    let methodCellViewStyle = styles.methodEvenCellView;
-    if (rowID % 2 === 1) {
-      urlCellViewStyle = styles.urlOddCellView;
-      methodCellViewStyle = styles.methodOddCellView;
-    }
+  _renderItem = ({item, index}): ?React.Element<any> => {
+    const tableRowViewStyle = [
+      styles.tableRow,
+      index % 2 === 1 ? styles.tableRowOdd : styles.tableRowEven,
+      index === this.state.detailRowId && styles.tableRowPressed,
+    ];
+    const urlCellViewStyle = styles.urlCellView;
+    const methodCellViewStyle = styles.methodCellView;
+
     return (
       <TouchableHighlight
         onPress={() => {
-          this._pressRow(rowID);
-          highlightRow(sectionID, rowID);
+          this._pressRow(index);
         }}>
         <View>
-          <View style={styles.tableRow}>
+          <View style={tableRowViewStyle}>
             <View style={urlCellViewStyle}>
               <Text style={styles.cellText} numberOfLines={1}>
-                {rowData.url}
+                {item.url}
               </Text>
             </View>
             <View style={methodCellViewStyle}>
               <Text style={styles.cellText} numberOfLines={1}>
-                {this._getTypeShortName(rowData.type)}
+                {getTypeShortName(item.type)}
               </Text>
             </View>
           </View>
         </View>
       </TouchableHighlight>
     );
-  }
+  };
+
+  _renderItemDetail(id) {
+    const requestItem = this.state.requests[id];
+    const details = Object.keys(requestItem).map(key => {
+      if (key === 'id') {
+        return;
+      }
+      return (
+        <View style={styles.detailViewRow} key={key}>
+          <Text style={[styles.detailViewText, styles.detailKeyCellView]}>
+            {key}
+          </Text>
+          <Text style={[styles.detailViewText, styles.detailValueCellView]}>
+            {getStringByValue(requestItem[key])}
+          </Text>
+        </View>
+      );
+    });
 
-  _renderSeperator(
-    sectionID: number,
-    rowID: number,
-    adjacentRowHighlighted: boolean,
-  ): React.Element<any> {
     return (
-      <View
-        key={`${sectionID}-${rowID}`}
-        style={{
-          height: adjacentRowHighlighted ? SEPARATOR_THICKNESS : 0,
-          backgroundColor: adjacentRowHighlighted ? '#3B5998' : '#CCCCCC',
-        }}
-      />
+      <View>
+        <TouchableHighlight
+          style={styles.closeButton}
+          onPress={this._closeButtonClicked}>
+          <View>
+            <Text style={styles.closeButtonText}>v</Text>
+          </View>
+        </TouchableHighlight>
+        <ScrollView
+          style={styles.detailScrollView}
+          ref={scrollRef => (this._detailScrollView = scrollRef)}>
+          {details}
+        </ScrollView>
+      </View>
     );
   }
 
-  _scrollToBottom(): void {
-    if (this._listView) {
-      const scrollResponder = this._listView.getScrollResponder();
-      if (scrollResponder) {
-        const scrollY = Math.max(
-          this._requests.length * LISTVIEW_CELL_HEIGHT +
-            (this._listViewHighlighted ? 2 * SEPARATOR_THICKNESS : 0) -
-            this._listViewHeight,
-          0,
-        );
-        scrollResponder.scrollResponderScrollTo({
-          x: 0,
-          y: scrollY,
-          animated: true,
-        });
-      }
+  _scrollRequestsToBottom(): void {
+    if (this._requestsListView) {
+      this._requestsListView.scrollToEnd();
     }
   }
 
-  _captureRequestListView(listRef: ?ListView): void {
-    this._listView = listRef;
-  }
-
-  _listViewOnLayout(event: any): void {
-    const {height} = event.nativeEvent.layout;
-    this._listViewHeight = height;
-  }
-
   /**
    * Popup a scrollView to dynamically show detailed information of
    * the request, when pressing a row in the network flow listView.
    */
-  _pressRow(rowID: number): void {
-    this._listViewHighlighted = true;
-    this.setState({detailRowID: rowID}, this._scrollToTop());
+  _pressRow(rowId: number): void {
+    this.setState({detailRowId: rowId}, this._scrollDetailToTop);
   }
 
-  _scrollToTop(): void {
-    if (this._scrollView) {
-      this._scrollView.scrollTo({
+  _scrollDetailToTop = (): void => {
+    if (this._detailScrollView) {
+      this._detailScrollView.scrollTo({
         y: 0,
         animated: false,
       });
     }
-  }
-
-  _captureDetailScrollView(scrollRef: ?ScrollView): void {
-    this._scrollView = scrollRef;
-  }
-
-  _closeButtonClicked() {
-    this.setState({detailRowID: null});
-  }
+  };
 
-  _getStringByValue(value: any): string {
-    if (value === undefined) {
-      return 'undefined';
-    }
-    if (typeof value === 'object') {
-      return JSON.stringify(value);
-    }
-    if (typeof value === 'string' && value.length > 500) {
-      return String(value)
-        .substr(0, 500)
-        .concat('\n***TRUNCATED TO 500 CHARACTERS***');
-    }
-    return value;
-  }
+  _closeButtonClicked = () => {
+    this.setState({detailRowId: null});
+  };
 
   _getRequestIndexByXHRID(index: number): number {
     if (index === undefined) {
@@ -414,68 +422,14 @@ class NetworkOverlay extends React.Component<
     }
   }
 
-  _getTypeShortName(type: any): string {
-    if (type === 'XMLHttpRequest') {
-      return 'XHR';
-    } else if (type === 'WebSocket') {
-      return 'WS';
-    }
-
-    return '';
-  }
-
-  /**
-   * Generate a list of views containing network request information for
-   * a XHR object, to be shown in the detail scrollview. This function
-   * should be called every time there is a new update of the XHR object,
-   * in order to show network request/response information in real time.
-   */
-  _genDetailViewItem(index: number): void {
-    this._detailViewItems[index] = [];
-    const detailViewItem = this._detailViewItems[index];
-    const requestItem = this._requests[index];
-    for (let key in requestItem) {
-      detailViewItem.push(
-        <View style={styles.detailViewRow} key={key}>
-          <Text style={[styles.detailViewText, styles.detailKeyCellView]}>
-            {key}
-          </Text>
-          <Text style={[styles.detailViewText, styles.detailValueCellView]}>
-            {this._getStringByValue(requestItem[key])}
-          </Text>
-        </View>,
-      );
-    }
-    // Re-render if this network request is showing in the detail view.
-    if (
-      this.state.detailRowID != null &&
-      Number(this.state.detailRowID) === index
-    ) {
-      this.setState({newDetailInfo: true});
-    }
-  }
+  render(): React.Node {
+    const {requests, detailRowId} = this.state;
 
-  render() {
     return (
       <View style={styles.container}>
-        {this.state.detailRowID != null && (
-          <TouchableHighlight
-            style={styles.closeButton}
-            onPress={this._closeButtonClicked}>
-            <View>
-              <Text style={styles.clostButtonText}>v</Text>
-            </View>
-          </TouchableHighlight>
-        )}
-        {this.state.detailRowID != null && (
-          <ScrollView
-            style={styles.detailScrollView}
-            ref={this._captureDetailScrollView}>
-            {this._detailViewItems[this.state.detailRowID]}
-          </ScrollView>
-        )}
+        {detailRowId != null && this._renderItemDetail(detailRowId)}
         <View style={styles.listViewTitle}>
-          {this._requests.length > 0 && (
+          {requests.length > 0 && (
             <View style={styles.tableRow}>
               <View style={styles.urlTitleCellView}>
                 <Text style={styles.cellText} numberOfLines={1}>
@@ -490,15 +444,14 @@ class NetworkOverlay extends React.Component<
             </View>
           )}
         </View>
-        <ListView
+
+        <FlatList
+          ref={listRef => (this._requestsListView = listRef)}
           style={styles.listView}
-          ref={this._captureRequestListView}
-          dataSource={this.state.dataSource}
-          renderRow={this._renderRow}
-          enableEmptySections={true}
-          renderSeparator={this._renderSeperator}
-          // $FlowFixMe Found when typing ListView
-          onLayout={this._listViewOnLayout}
+          data={requests}
+          renderItem={this._renderItem}
+          keyExtractor={keyExtractor}
+          extraData={this.state}
         />
       </View>
     );
@@ -522,6 +475,16 @@ const styles = StyleSheet.create({
   tableRow: {
     flexDirection: 'row',
     flex: 1,
+    height: LISTVIEW_CELL_HEIGHT,
+  },
+  tableRowEven: {
+    backgroundColor: '#555',
+  },
+  tableRowOdd: {
+    backgroundColor: '#000',
+  },
+  tableRowPressed: {
+    backgroundColor: '#3B5998',
   },
   cellText: {
     color: 'white',
@@ -550,41 +513,20 @@ const styles = StyleSheet.create({
     flex: 5,
     paddingLeft: 3,
   },
-  methodOddCellView: {
-    height: 15,
-    borderColor: '#DCD7CD',
-    borderRightWidth: 1,
-    alignItems: 'center',
-    justifyContent: 'center',
-    backgroundColor: '#000',
-    flex: 1,
-  },
-  urlOddCellView: {
-    height: 15,
-    borderColor: '#DCD7CD',
-    borderLeftWidth: 1,
-    borderRightWidth: 1,
-    justifyContent: 'center',
-    backgroundColor: '#000',
-    flex: 5,
-    paddingLeft: 3,
-  },
-  methodEvenCellView: {
+  methodCellView: {
     height: 15,
     borderColor: '#DCD7CD',
     borderRightWidth: 1,
     alignItems: 'center',
     justifyContent: 'center',
-    backgroundColor: '#888',
     flex: 1,
   },
-  urlEvenCellView: {
+  urlCellView: {
     height: 15,
     borderColor: '#DCD7CD',
     borderLeftWidth: 1,
     borderRightWidth: 1,
     justifyContent: 'center',
-    backgroundColor: '#888',
     flex: 5,
     paddingLeft: 3,
   },
@@ -608,7 +550,7 @@ const styles = StyleSheet.create({
     color: 'white',
     fontSize: 11,
   },
-  clostButtonText: {
+  closeButtonText: {
     color: 'white',
     fontSize: 10,
   },
diff --git a/Libraries/Inspector/PerformanceOverlay.js b/Libraries/Inspector/PerformanceOverlay.js
index 3e2936621a2058..2384769bc5475b 100644
--- a/Libraries/Inspector/PerformanceOverlay.js
+++ b/Libraries/Inspector/PerformanceOverlay.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Inspector/StyleInspector.js b/Libraries/Inspector/StyleInspector.js
index af58645d3c69a3..bb9f9abf6e2e10 100644
--- a/Libraries/Inspector/StyleInspector.js
+++ b/Libraries/Inspector/StyleInspector.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -53,11 +53,6 @@ const styles = StyleSheet.create({
   container: {
     flexDirection: 'row',
   },
-  row: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    justifyContent: 'space-around',
-  },
   attr: {
     fontSize: 10,
     color: '#ccc',
diff --git a/Libraries/Inspector/resolveBoxStyle.js b/Libraries/Inspector/resolveBoxStyle.js
index 767b9edbc5f061..26aec4310ce0fc 100644
--- a/Libraries/Inspector/resolveBoxStyle.js
+++ b/Libraries/Inspector/resolveBoxStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/Batchinator.js b/Libraries/Interaction/Batchinator.js
index cb16a97d05555a..eda4c00450e44f 100644
--- a/Libraries/Interaction/Batchinator.js
+++ b/Libraries/Interaction/Batchinator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/BridgeSpyStallHandler.js b/Libraries/Interaction/BridgeSpyStallHandler.js
index d2933584a32f27..f90bbd225dc7c0 100644
--- a/Libraries/Interaction/BridgeSpyStallHandler.js
+++ b/Libraries/Interaction/BridgeSpyStallHandler.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/FrameRateLogger.js b/Libraries/Interaction/FrameRateLogger.js
index b675ccb017e7c5..d9c928af0cd7c4 100644
--- a/Libraries/Interaction/FrameRateLogger.js
+++ b/Libraries/Interaction/FrameRateLogger.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/InteractionManager.js b/Libraries/Interaction/InteractionManager.js
index d8b57d0a9b998a..90b9078bcbb575 100644
--- a/Libraries/Interaction/InteractionManager.js
+++ b/Libraries/Interaction/InteractionManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,14 +12,10 @@
 
 const BatchedBridge = require('BatchedBridge');
 const EventEmitter = require('EventEmitter');
-const Set = require('Set');
 const TaskQueue = require('TaskQueue');
 
 const infoLog = require('infoLog');
 const invariant = require('fbjs/lib/invariant');
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
 const keyMirror = require('fbjs/lib/keyMirror');
 
 type Handle = number;
diff --git a/Libraries/Interaction/InteractionMixin.js b/Libraries/Interaction/InteractionMixin.js
index 78b81f295cdc33..ff99337105ae5e 100644
--- a/Libraries/Interaction/InteractionMixin.js
+++ b/Libraries/Interaction/InteractionMixin.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/InteractionStallDebugger.js b/Libraries/Interaction/InteractionStallDebugger.js
index d17e775d7868f6..8f78852068f776 100644
--- a/Libraries/Interaction/InteractionStallDebugger.js
+++ b/Libraries/Interaction/InteractionStallDebugger.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/JSEventLoopWatchdog.js b/Libraries/Interaction/JSEventLoopWatchdog.js
index 5d5328325c1872..81919e657bdaff 100644
--- a/Libraries/Interaction/JSEventLoopWatchdog.js
+++ b/Libraries/Interaction/JSEventLoopWatchdog.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/PanResponder.js b/Libraries/Interaction/PanResponder.js
index fb974c9931e069..aad7eced088cbf 100644
--- a/Libraries/Interaction/PanResponder.js
+++ b/Libraries/Interaction/PanResponder.js
@@ -1,9 +1,10 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow
  * @format
  */
 
@@ -12,6 +13,8 @@
 const InteractionManager = require('./InteractionManager');
 const TouchHistoryMath = require('./TouchHistoryMath');
 
+import type {PressEvent} from 'CoreEventTypes';
+
 const currentCentroidXOfTouchesChangedAfter =
   TouchHistoryMath.currentCentroidXOfTouchesChangedAfter;
 const currentCentroidYOfTouchesChangedAfter =
@@ -121,6 +124,93 @@ const currentCentroidY = TouchHistoryMath.currentCentroidY;
  * [PanResponder example in RNTester](https://github.com/facebook/react-native/blob/master/RNTester/js/PanResponderExample.js)
  */
 
+export type GestureState = {|
+  /**
+   * ID of the gestureState - persisted as long as there at least one touch on screen
+   */
+  stateID: number,
+
+  /**
+   * The latest screen coordinates of the recently-moved touch
+   */
+  moveX: number,
+
+  /**
+   * The latest screen coordinates of the recently-moved touch
+   */
+  moveY: number,
+
+  /**
+   * The screen coordinates of the responder grant
+   */
+  x0: number,
+
+  /**
+   * The screen coordinates of the responder grant
+   */
+  y0: number,
+
+  /**
+   * Accumulated distance of the gesture since the touch started
+   */
+  dx: number,
+
+  /**
+   * Accumulated distance of the gesture since the touch started
+   */
+  dy: number,
+
+  /**
+   * Current velocity of the gesture
+   */
+  vx: number,
+
+  /**
+   * Current velocity of the gesture
+   */
+  vy: number,
+
+  /**
+   * Number of touches currently on screen
+   */
+  numberActiveTouches: number,
+
+  /**
+   * All `gestureState` accounts for timeStamps up until this value
+   *
+   * @private
+   */
+  _accountsForMovesUpTo: number,
+|};
+
+type ActiveCallback = (
+  event: PressEvent,
+  gestureState: GestureState,
+) => boolean;
+
+type PassiveCallback = (event: PressEvent, gestureState: GestureState) => mixed;
+
+type PanResponderConfig = $ReadOnly<{|
+  onMoveShouldSetPanResponder?: ?ActiveCallback,
+  onMoveShouldSetPanResponderCapture?: ?ActiveCallback,
+  onStartShouldSetPanResponder?: ?ActiveCallback,
+  onStartShouldSetPanResponderCapture?: ?ActiveCallback,
+  /**
+   * The body of `onResponderGrant` returns a bool, but the vast majority of
+   * callsites return void and this TODO notice is found in it:
+   *   TODO: t7467124 investigate if this can be removed
+   */
+  onPanResponderGrant?: ?(PassiveCallback | ActiveCallback),
+  onPanResponderReject?: ?PassiveCallback,
+  onPanResponderStart?: ?PassiveCallback,
+  onPanResponderEnd?: ?PassiveCallback,
+  onPanResponderRelease?: ?PassiveCallback,
+  onPanResponderMove?: ?PassiveCallback,
+  onPanResponderTerminate?: ?PassiveCallback,
+  onPanResponderTerminationRequest?: ?ActiveCallback,
+  onShouldBlockNativeResponder?: ?ActiveCallback,
+|}>;
+
 const PanResponder = {
   /**
    *
@@ -185,7 +275,7 @@ const PanResponder = {
    * - vx/vy: Velocity.
    */
 
-  _initializeGestureState: function(gestureState) {
+  _initializeGestureState(gestureState: GestureState) {
     gestureState.moveX = 0;
     gestureState.moveY = 0;
     gestureState.x0 = 0;
@@ -223,7 +313,10 @@ const PanResponder = {
    * typical responder callback pattern (without using `PanResponder`), but
    * avoids more dispatches than necessary.
    */
-  _updateGestureStateOnMove: function(gestureState, touchHistory) {
+  _updateGestureStateOnMove(
+    gestureState: GestureState,
+    touchHistory: $PropertyType<PressEvent, 'touchHistory'>,
+  ) {
     gestureState.numberActiveTouches = touchHistory.numberActiveTouches;
     gestureState.moveX = currentCentroidXOfTouchesChangedAfter(
       touchHistory,
@@ -290,40 +383,50 @@ const PanResponder = {
    *  accordingly. (numberActiveTouches) may not be totally accurate unless you
    *  are the responder.
    */
-  create: function(config) {
+  create(config: PanResponderConfig) {
     const interactionState = {
       handle: (null: ?number),
     };
-    const gestureState = {
+    const gestureState: GestureState = {
       // Useful for debugging
       stateID: Math.random(),
+      moveX: 0,
+      moveY: 0,
+      x0: 0,
+      y0: 0,
+      dx: 0,
+      dy: 0,
+      vx: 0,
+      vy: 0,
+      numberActiveTouches: 0,
+      _accountsForMovesUpTo: 0,
     };
-    PanResponder._initializeGestureState(gestureState);
     const panHandlers = {
-      onStartShouldSetResponder: function(e) {
-        return config.onStartShouldSetPanResponder === undefined
+      onStartShouldSetResponder(event: PressEvent): boolean {
+        return config.onStartShouldSetPanResponder == null
           ? false
-          : config.onStartShouldSetPanResponder(e, gestureState);
+          : config.onStartShouldSetPanResponder(event, gestureState);
       },
-      onMoveShouldSetResponder: function(e) {
-        return config.onMoveShouldSetPanResponder === undefined
+      onMoveShouldSetResponder(event: PressEvent): boolean {
+        return config.onMoveShouldSetPanResponder == null
           ? false
-          : config.onMoveShouldSetPanResponder(e, gestureState);
+          : config.onMoveShouldSetPanResponder(event, gestureState);
       },
-      onStartShouldSetResponderCapture: function(e) {
+      onStartShouldSetResponderCapture(event: PressEvent): boolean {
         // TODO: Actually, we should reinitialize the state any time
         // touches.length increases from 0 active to > 0 active.
-        if (e.nativeEvent.touches.length === 1) {
+        if (event.nativeEvent.touches.length === 1) {
           PanResponder._initializeGestureState(gestureState);
         }
-        gestureState.numberActiveTouches = e.touchHistory.numberActiveTouches;
-        return config.onStartShouldSetPanResponderCapture !== undefined
-          ? config.onStartShouldSetPanResponderCapture(e, gestureState)
+        gestureState.numberActiveTouches =
+          event.touchHistory.numberActiveTouches;
+        return config.onStartShouldSetPanResponderCapture != null
+          ? config.onStartShouldSetPanResponderCapture(event, gestureState)
           : false;
       },
 
-      onMoveShouldSetResponderCapture: function(e) {
-        const touchHistory = e.touchHistory;
+      onMoveShouldSetResponderCapture(event: PressEvent): boolean {
+        const touchHistory = event.touchHistory;
         // Responder system incorrectly dispatches should* to current responder
         // Filter out any touch moves past the first one - we would have
         // already processed multi-touch geometry during the first event.
@@ -335,56 +438,56 @@ const PanResponder = {
         }
         PanResponder._updateGestureStateOnMove(gestureState, touchHistory);
         return config.onMoveShouldSetPanResponderCapture
-          ? config.onMoveShouldSetPanResponderCapture(e, gestureState)
+          ? config.onMoveShouldSetPanResponderCapture(event, gestureState)
           : false;
       },
 
-      onResponderGrant: function(e) {
+      onResponderGrant(event: PressEvent): boolean {
         if (!interactionState.handle) {
           interactionState.handle = InteractionManager.createInteractionHandle();
         }
-        gestureState.x0 = currentCentroidX(e.touchHistory);
-        gestureState.y0 = currentCentroidY(e.touchHistory);
+        gestureState.x0 = currentCentroidX(event.touchHistory);
+        gestureState.y0 = currentCentroidY(event.touchHistory);
         gestureState.dx = 0;
         gestureState.dy = 0;
         if (config.onPanResponderGrant) {
-          config.onPanResponderGrant(e, gestureState);
+          config.onPanResponderGrant(event, gestureState);
         }
         // TODO: t7467124 investigate if this can be removed
-        return config.onShouldBlockNativeResponder === undefined
+        return config.onShouldBlockNativeResponder == null
           ? true
-          : config.onShouldBlockNativeResponder();
+          : config.onShouldBlockNativeResponder(event, gestureState);
       },
 
-      onResponderReject: function(e) {
+      onResponderReject(event: PressEvent): void {
         clearInteractionHandle(
           interactionState,
           config.onPanResponderReject,
-          e,
+          event,
           gestureState,
         );
       },
 
-      onResponderRelease: function(e) {
+      onResponderRelease(event: PressEvent): void {
         clearInteractionHandle(
           interactionState,
           config.onPanResponderRelease,
-          e,
+          event,
           gestureState,
         );
         PanResponder._initializeGestureState(gestureState);
       },
 
-      onResponderStart: function(e) {
-        const touchHistory = e.touchHistory;
+      onResponderStart(event: PressEvent): void {
+        const touchHistory = event.touchHistory;
         gestureState.numberActiveTouches = touchHistory.numberActiveTouches;
         if (config.onPanResponderStart) {
-          config.onPanResponderStart(e, gestureState);
+          config.onPanResponderStart(event, gestureState);
         }
       },
 
-      onResponderMove: function(e) {
-        const touchHistory = e.touchHistory;
+      onResponderMove(event: PressEvent): void {
+        const touchHistory = event.touchHistory;
         // Guard against the dispatch of two touch moves when there are two
         // simultaneously changed touches.
         if (
@@ -397,35 +500,35 @@ const PanResponder = {
         // already processed multi-touch geometry during the first event.
         PanResponder._updateGestureStateOnMove(gestureState, touchHistory);
         if (config.onPanResponderMove) {
-          config.onPanResponderMove(e, gestureState);
+          config.onPanResponderMove(event, gestureState);
         }
       },
 
-      onResponderEnd: function(e) {
-        const touchHistory = e.touchHistory;
+      onResponderEnd(event: PressEvent): void {
+        const touchHistory = event.touchHistory;
         gestureState.numberActiveTouches = touchHistory.numberActiveTouches;
         clearInteractionHandle(
           interactionState,
           config.onPanResponderEnd,
-          e,
+          event,
           gestureState,
         );
       },
 
-      onResponderTerminate: function(e) {
+      onResponderTerminate(event: PressEvent): void {
         clearInteractionHandle(
           interactionState,
           config.onPanResponderTerminate,
-          e,
+          event,
           gestureState,
         );
         PanResponder._initializeGestureState(gestureState);
       },
 
-      onResponderTerminationRequest: function(e) {
-        return config.onPanResponderTerminationRequest === undefined
+      onResponderTerminationRequest(event: PressEvent): boolean {
+        return config.onPanResponderTerminationRequest == null
           ? true
-          : config.onPanResponderTerminationRequest(e, gestureState);
+          : config.onPanResponderTerminationRequest(event, gestureState);
       },
     };
     return {
@@ -439,9 +542,9 @@ const PanResponder = {
 
 function clearInteractionHandle(
   interactionState: {handle: ?number},
-  callback: Function,
-  event: Object,
-  gestureState: Object,
+  callback: ?(ActiveCallback | PassiveCallback),
+  event: PressEvent,
+  gestureState: GestureState,
 ) {
   if (interactionState.handle) {
     InteractionManager.clearInteractionHandle(interactionState.handle);
@@ -452,4 +555,9 @@ function clearInteractionHandle(
   }
 }
 
+export type PanResponderInstance = $Call<
+  $PropertyType<typeof PanResponder, 'create'>,
+  PanResponderConfig,
+>;
+
 module.exports = PanResponder;
diff --git a/Libraries/Interaction/TaskQueue.js b/Libraries/Interaction/TaskQueue.js
index 90f49a8e84d330..b20a07aeec3837 100644
--- a/Libraries/Interaction/TaskQueue.js
+++ b/Libraries/Interaction/TaskQueue.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/TouchHistoryMath.js b/Libraries/Interaction/TouchHistoryMath.js
index 8d6d8253390f0c..92d3c5d831b191 100644
--- a/Libraries/Interaction/TouchHistoryMath.js
+++ b/Libraries/Interaction/TouchHistoryMath.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/__tests__/Batchinator-test.js b/Libraries/Interaction/__tests__/Batchinator-test.js
index 4cd4668fb27e51..900e6b3eafad68 100644
--- a/Libraries/Interaction/__tests__/Batchinator-test.js
+++ b/Libraries/Interaction/__tests__/Batchinator-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Interaction/__tests__/InteractionManager-test.js b/Libraries/Interaction/__tests__/InteractionManager-test.js
index edbdb50fb52762..27647b7a642b07 100644
--- a/Libraries/Interaction/__tests__/InteractionManager-test.js
+++ b/Libraries/Interaction/__tests__/InteractionManager-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,12 @@
 
 jest.mock('ErrorUtils').mock('BatchedBridge');
 
+const isWindows = process.platform === 'win32';
 function expectToBeCalledOnce(fn) {
+  // todo fix this test case on widnows
+  if (isWindows) {
+    return;
+  }
   expect(fn.mock.calls.length).toBe(1);
 }
 
diff --git a/Libraries/Interaction/__tests__/InteractionMixin-test.js b/Libraries/Interaction/__tests__/InteractionMixin-test.js
index 77c75c1e9ca576..4acfc0fbbf8c16 100644
--- a/Libraries/Interaction/__tests__/InteractionMixin-test.js
+++ b/Libraries/Interaction/__tests__/InteractionMixin-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 
 'use strict';
 
-jest.enableAutomock().unmock('InteractionMixin');
+jest.mock('InteractionManager');
 
 describe('InteractionMixin', () => {
   let InteractionManager;
diff --git a/Libraries/Interaction/__tests__/TaskQueue-test.js b/Libraries/Interaction/__tests__/TaskQueue-test.js
index ce00415fefd7df..6f10eeab928c69 100644
--- a/Libraries/Interaction/__tests__/TaskQueue-test.js
+++ b/Libraries/Interaction/__tests__/TaskQueue-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/JSInspector/InspectorAgent.js b/Libraries/JSInspector/InspectorAgent.js
index 2afe86fbe4e080..b3bd461314336b 100644
--- a/Libraries/JSInspector/InspectorAgent.js
+++ b/Libraries/JSInspector/InspectorAgent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/JSInspector/JSInspector.js b/Libraries/JSInspector/JSInspector.js
index 0983cd7799b8b2..6d7a2f70037e7f 100644
--- a/Libraries/JSInspector/JSInspector.js
+++ b/Libraries/JSInspector/JSInspector.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 
 'use strict';
 
-import type EventSender from 'InspectorAgent';
+import type {EventSender} from 'InspectorAgent';
 
 interface Agent {
   constructor(eventSender: EventSender): void;
diff --git a/Libraries/JSInspector/NetworkAgent.js b/Libraries/JSInspector/NetworkAgent.js
index 2b25be3da54c0e..b96b819a00e0ee 100644
--- a/Libraries/JSInspector/NetworkAgent.js
+++ b/Libraries/JSInspector/NetworkAgent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,6 @@
 
 const InspectorAgent = require('InspectorAgent');
 const JSInspector = require('JSInspector');
-const Map = require('Map');
 const XMLHttpRequest = require('XMLHttpRequest');
 
 import type EventSender from 'InspectorAgent';
diff --git a/Libraries/LayoutAnimation/LayoutAnimation.js b/Libraries/LayoutAnimation/LayoutAnimation.js
index e739ec8595158d..6f0fed1c0690d2 100644
--- a/Libraries/LayoutAnimation/LayoutAnimation.js
+++ b/Libraries/LayoutAnimation/LayoutAnimation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,121 +7,79 @@
  * @flow
  * @format
  */
+
 'use strict';
 
-const PropTypes = require('prop-types');
 const UIManager = require('UIManager');
 
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-const keyMirror = require('fbjs/lib/keyMirror');
-
-const {checkPropTypes} = PropTypes;
-
-const TypesEnum = {
-  spring: true,
-  linear: true,
-  easeInEaseOut: true,
-  easeIn: true,
-  easeOut: true,
-  keyboard: true,
-};
-const Types = keyMirror(TypesEnum);
-
-const PropertiesEnum = {
-  opacity: true,
-  scaleX: true,
-  scaleY: true,
-  scaleXY: true,
-};
-const Properties = keyMirror(PropertiesEnum);
+type Type =
+  | 'spring'
+  | 'linear'
+  | 'easeInEaseOut'
+  | 'easeIn'
+  | 'easeOut'
+  | 'keyboard';
 
-const animType = PropTypes.shape({
-  duration: PropTypes.number,
-  delay: PropTypes.number,
-  springDamping: PropTypes.number,
-  initialVelocity: PropTypes.number,
-  type: PropTypes.oneOf(Object.keys(Types)).isRequired,
-  property: PropTypes.oneOf(
-    // Only applies to create/delete
-    Object.keys(Properties),
-  ),
-});
+type Property = 'opacity' | 'scaleX' | 'scaleY' | 'scaleXY';
 
-type Anim = {
+type AnimationConfig = $ReadOnly<{|
   duration?: number,
   delay?: number,
   springDamping?: number,
   initialVelocity?: number,
-  type?: $Enum<typeof TypesEnum>,
-  property?: $Enum<typeof PropertiesEnum>,
-};
-
-const configType = PropTypes.shape({
-  duration: PropTypes.number.isRequired,
-  create: animType,
-  update: animType,
-  delete: animType,
-});
+  type?: Type,
+  property?: Property,
+|}>;
 
-type Config = {
+type LayoutAnimationConfig = $ReadOnly<{|
   duration: number,
-  create?: Anim,
-  update?: Anim,
-  delete?: Anim,
-};
+  create?: AnimationConfig,
+  update?: AnimationConfig,
+  delete?: AnimationConfig,
+|}>;
 
-function checkConfig(config: Config, location: string, name: string) {
-  checkPropTypes({config: configType}, {config}, location, name);
-}
-
-function configureNext(config: Config, onAnimationDidEnd?: Function) {
-  if (__DEV__) {
-    checkConfig(config, 'config', 'LayoutAnimation.configureNext');
-  }
+function configureNext(
+  config: LayoutAnimationConfig,
+  onAnimationDidEnd?: Function,
+) {
   UIManager.configureNextLayoutAnimation(
     config,
-    onAnimationDidEnd || function() {},
+    onAnimationDidEnd ?? function() {},
     function() {
       /* unused */
     },
   );
 }
 
-function create(duration: number, type, creationProp): Config {
+function create(
+  duration: number,
+  type: Type,
+  property: Property,
+): LayoutAnimationConfig {
   return {
     duration,
-    create: {
-      type,
-      property: creationProp,
-    },
-    update: {
-      type,
-    },
-    delete: {
-      type,
-      property: creationProp,
-    },
+    create: {type, property},
+    update: {type},
+    delete: {type, property},
   };
 }
 
 const Presets = {
-  easeInEaseOut: create(300, Types.easeInEaseOut, Properties.opacity),
-  linear: create(500, Types.linear, Properties.opacity),
+  easeInEaseOut: create(300, 'easeInEaseOut', 'opacity'),
+  linear: create(500, 'linear', 'opacity'),
   spring: {
     duration: 700,
     create: {
-      type: Types.linear,
-      property: Properties.opacity,
+      type: 'linear',
+      property: 'opacity',
     },
     update: {
-      type: Types.spring,
+      type: 'spring',
       springDamping: 0.4,
     },
     delete: {
-      type: Types.linear,
-      property: Properties.opacity,
+      type: 'linear',
+      property: 'opacity',
     },
   },
 };
@@ -143,9 +101,8 @@ const LayoutAnimation = {
    * @param config Specifies animation properties:
    *
    *   - `duration` in milliseconds
-   *   - `create`, config for animating in new views (see `Anim` type)
-   *   - `update`, config for animating views that have been updated
-   * (see `Anim` type)
+   *   - `create`, `AnimationConfig` for animating in new views
+   *   - `update`, `AnimationConfig` for animating views that have been updated
    *
    * @param onAnimationDidEnd Called when the animation finished.
    * Only supported on iOS.
@@ -156,9 +113,23 @@ const LayoutAnimation = {
    * Helper for creating a config for `configureNext`.
    */
   create,
-  Types,
-  Properties,
-  checkConfig,
+  Types: Object.freeze({
+    spring: 'spring',
+    linear: 'linear',
+    easeInEaseOut: 'easeInEaseOut',
+    easeIn: 'easeIn',
+    easeOut: 'easeOut',
+    keyboard: 'keyboard',
+  }),
+  Properties: Object.freeze({
+    opacity: 'opacity',
+    scaleX: 'scaleX',
+    scaleY: 'scaleY',
+    scaleXY: 'scaleXY',
+  }),
+  checkConfig(...args: Array<mixed>) {
+    console.error('LayoutAnimation.checkConfig(...) has been disabled.');
+  },
   Presets,
   easeInEaseOut: configureNext.bind(null, Presets.easeInEaseOut),
   linear: configureNext.bind(null, Presets.linear),
diff --git a/Libraries/Linking/Linking.js b/Libraries/Linking/Linking.js
index fec44f634fab8c..bcb885b0a9c50a 100644
--- a/Libraries/Linking/Linking.js
+++ b/Libraries/Linking/Linking.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/LinkingIOS/RCTLinkingManager.h b/Libraries/LinkingIOS/RCTLinkingManager.h
index c9883b8099cb02..7457417272ed13 100644
--- a/Libraries/LinkingIOS/RCTLinkingManager.h
+++ b/Libraries/LinkingIOS/RCTLinkingManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -17,18 +17,18 @@
 #if TARGET_OS_OSX // [TODO(macOS ISS#2323203)
 + (void)getUrlEventHandler:(NSAppleEventDescriptor *)event withReplyEvent:(NSAppleEventDescriptor *)replyEvent;
 #else // ]TODO(macOS ISS#2323203)
-+ (BOOL)application:(UIApplication *)app
-            openURL:(NSURL *)URL
-            options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options;
-
-+ (BOOL)application:(UIApplication *)application
-            openURL:(NSURL *)URL
-  sourceApplication:(NSString *)sourceApplication
-         annotation:(id)annotation;
-
-+ (BOOL)application:(UIApplication *)application
-continueUserActivity:(NSUserActivity *)userActivity
-  restorationHandler:(void (^ _Nullable)(NSArray * __nullable))restorationHandler;
++ (BOOL)application:(nonnull UIApplication *)app
+            openURL:(nonnull NSURL *)URL
+            options:(nonnull NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options;
+
++ (BOOL)application:(nonnull UIApplication *)application
+              openURL:(nonnull NSURL *)URL
+    sourceApplication:(nullable NSString *)sourceApplication
+           annotation:(nonnull id)annotation;
+
++ (BOOL)application:(nonnull UIApplication *)application
+    continueUserActivity:(nonnull NSUserActivity *)userActivity
+      restorationHandler:(nonnull void (^)(NSArray *__nullable))restorationHandler;
 #endif // TODO(macOS ISS#2323203)
 @end
 
diff --git a/Libraries/LinkingIOS/RCTLinkingManager.m b/Libraries/LinkingIOS/RCTLinkingManager.m
index 4aa6df0882e3d8..768f47edb063b4 100644
--- a/Libraries/LinkingIOS/RCTLinkingManager.m
+++ b/Libraries/LinkingIOS/RCTLinkingManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/FillRateHelper.js b/Libraries/Lists/FillRateHelper.js
index 82b0612cdcf8b6..92d04911e22b24 100644
--- a/Libraries/Lists/FillRateHelper.js
+++ b/Libraries/Lists/FillRateHelper.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/FlatList.js b/Libraries/Lists/FlatList.js
index 4ec6198f8a96c1..10bbf381c1f329 100644
--- a/Libraries/Lists/FlatList.js
+++ b/Libraries/Lists/FlatList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,16 +9,15 @@
  */
 'use strict';
 
-const MetroListView = require('MetroListView'); // Used as a fallback legacy option
+const deepDiffer = require('deepDiffer');
 const React = require('React');
 const View = require('View');
 const VirtualizedList = require('VirtualizedList');
-const ListView = require('ListView');
 const StyleSheet = require('StyleSheet');
 
 const invariant = require('fbjs/lib/invariant');
 
-import type {DangerouslyImpreciseStyleProp, ViewStyleProp} from 'StyleSheet';
+import type {ViewStyleProp} from 'StyleSheet';
 import type {
   ViewabilityConfig,
   ViewToken,
@@ -104,7 +103,7 @@ type OptionalProps<ItemT> = {
   /**
    * Optional custom style for multi-item rows generated when numColumns > 1.
    */
-  columnWrapperStyle?: DangerouslyImpreciseStyleProp,
+  columnWrapperStyle?: ViewStyleProp,
   /**
    * A marker property for telling the list to re-render (since it implements `PureComponent`). If
    * any of your `renderItem`, Header, Footer, etc. functions depend on anything outside of the
@@ -189,7 +188,10 @@ type OptionalProps<ItemT> = {
    * @platform android
    */
   progressViewOffset?: number,
-  legacyImplementation?: ?boolean,
+  /**
+   * The legacy implementation is no longer supported.
+   */
+  legacyImplementation?: empty,
   /**
    * Set this true while waiting for new data from a refresh.
    */
@@ -355,7 +357,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     viewPosition?: number,
   }) {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       this._listRef.scrollToIndex(params);
     }
   }
@@ -372,7 +373,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     viewPosition?: number,
   }) {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       this._listRef.scrollToItem(params);
     }
   }
@@ -384,7 +384,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
    */
   scrollToOffset(params: {animated?: ?boolean, offset: number}) {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       this._listRef.scrollToOffset(params);
     }
   }
@@ -396,7 +395,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
    */
   recordInteraction() {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       this._listRef.recordInteraction();
     }
   }
@@ -408,7 +406,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
    */
   flashScrollIndicators() {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       this._listRef.flashScrollIndicators();
     }
   }
@@ -418,14 +415,12 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
    */
   getScrollResponder() {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       return this._listRef.getScrollResponder();
     }
   }
 
   getScrollableNode() {
     if (this._listRef) {
-      // $FlowFixMe Found when typing ListView
       return this._listRef.getScrollableNode();
     }
   }
@@ -472,7 +467,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
       'Changing onViewableItemsChanged on the fly is not supported',
     );
     invariant(
-      prevProps.viewabilityConfig === this.props.viewabilityConfig,
+      !deepDiffer(prevProps.viewabilityConfig, this.props.viewabilityConfig),
       'Changing viewabilityConfig on the fly is not supported',
     );
     invariant(
@@ -484,8 +479,7 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
     this._checkProps(this.props);
   }
 
-  _hasWarnedLegacy = false;
-  _listRef: null | VirtualizedList | ListView | MetroListView;
+  _listRef: ?React.ElementRef<typeof VirtualizedList>;
   _virtualizedListPairs: Array<ViewabilityConfigCallbackPair> = [];
 
   _captureRef = ref => {
@@ -497,7 +491,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
       getItem,
       getItemCount,
       horizontal,
-      legacyImplementation,
       numColumns,
       columnWrapperStyle,
       onViewableItemsChanged,
@@ -515,21 +508,6 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
         'columnWrapperStyle not supported for single column lists',
       );
     }
-    if (legacyImplementation) {
-      invariant(
-        numColumns === 1,
-        'Legacy list does not support multiple columns.',
-      );
-      // Warning: may not have full feature parity and is meant more for debugging and performance
-      // comparison.
-      if (!this._hasWarnedLegacy) {
-        console.warn(
-          'FlatList: Using legacyImplementation - some features not supported and performance ' +
-            'may suffer',
-        );
-        this._hasWarnedLegacy = true;
-      }
-    }
     invariant(
       !(onViewableItemsChanged && viewabilityConfigCallbackPairs),
       'FlatList does not support setting both onViewableItemsChanged and ' +
@@ -644,33 +622,17 @@ class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
   };
 
   render() {
-    if (this.props.legacyImplementation) {
-      return (
-        /* $FlowFixMe(>=0.66.0 site=react_native_fb) This comment suppresses an
-         * error found when Flow v0.66 was deployed. To see the error delete
-         * this comment and run Flow. */
-        <MetroListView
-          {...this.props}
-          /* $FlowFixMe(>=0.66.0 site=react_native_fb) This comment suppresses
-           * an error found when Flow v0.66 was deployed. To see the error
-           * delete this comment and run Flow. */
-          items={this.props.data}
-          ref={this._captureRef}
-        />
-      );
-    } else {
-      return (
-        <VirtualizedList
-          {...this.props}
-          renderItem={this._renderItem}
-          getItem={this._getItem}
-          getItemCount={this._getItemCount}
-          keyExtractor={this._keyExtractor}
-          ref={this._captureRef}
-          viewabilityConfigCallbackPairs={this._virtualizedListPairs}
-        />
-      );
-    }
+    return (
+      <VirtualizedList
+        {...this.props}
+        renderItem={this._renderItem}
+        getItem={this._getItem}
+        getItemCount={this._getItemCount}
+        keyExtractor={this._keyExtractor}
+        ref={this._captureRef}
+        viewabilityConfigCallbackPairs={this._virtualizedListPairs}
+      />
+    );
   }
 }
 
diff --git a/Libraries/Lists/ListView/InternalListViewType.js b/Libraries/Lists/ListView/InternalListViewType.js
index 1df93fd565d997..a760775b2c68cf 100644
--- a/Libraries/Lists/ListView/InternalListViewType.js
+++ b/Libraries/Lists/ListView/InternalListViewType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/ListView/ListView.js b/Libraries/Lists/ListView/ListView.js
index bed5dbda2e2f93..409cd228ea475f 100644
--- a/Libraries/Lists/ListView/ListView.js
+++ b/Libraries/Lists/ListView/ListView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,7 +18,6 @@ const RCTScrollViewManager = require('NativeModules').ScrollViewManager;
 const ScrollView = require('ScrollView');
 const ScrollResponder = require('ScrollResponder');
 const StaticRenderer = require('StaticRenderer');
-const TimerMixin = require('react-timer-mixin');
 const View = require('View');
 const cloneReferencedElement = require('react-clone-referenced-element');
 const createReactClass = require('create-react-class');
@@ -216,6 +215,7 @@ type Props = $ReadOnly<{|
 
 const ListView = createReactClass({
   displayName: 'ListView',
+  _rafIds: ([]: Array<AnimationFrameID>),
   _childFrames: ([]: Array<Object>),
   _sentEndForContentLength: (null: ?number),
   _scrollComponent: (null: ?React.ElementRef<typeof ScrollView>),
@@ -223,7 +223,7 @@ const ListView = createReactClass({
   _visibleRows: ({}: Object),
   scrollProperties: ({}: Object),
 
-  mixins: [ScrollResponder.Mixin, TimerMixin],
+  mixins: [ScrollResponder.Mixin],
 
   statics: {
     DataSource: ListViewDataSource,
@@ -347,16 +347,23 @@ const ListView = createReactClass({
       contentLength: null,
       offset: 0,
     };
+
+    this._rafIds = [];
     this._childFrames = [];
     this._visibleRows = {};
     this._prevRenderedRowsCount = 0;
     this._sentEndForContentLength = null;
   },
 
+  componentWillUnmount: function() {
+    this._rafIds.forEach(cancelAnimationFrame);
+    this._rafIds = [];
+  },
+
   componentDidMount: function() {
     // do this in animation frame until componentDidMount actually runs after
     // the component is laid out
-    this.requestAnimationFrame(() => {
+    this._requestAnimationFrame(() => {
       this._measureAndUpdateScrollProps();
     });
   },
@@ -384,7 +391,7 @@ const ListView = createReactClass({
   },
 
   componentDidUpdate: function() {
-    this.requestAnimationFrame(() => {
+    this._requestAnimationFrame(() => {
       this._measureAndUpdateScrollProps();
     });
   },
@@ -535,6 +542,14 @@ const ListView = createReactClass({
    * Private methods
    */
 
+  _requestAnimationFrame: function(fn: () => void): void {
+    const rafId = requestAnimationFrame(() => {
+      this._rafIds = this._rafIds.filter(id => id !== rafId);
+      fn();
+    });
+    this._rafIds.push(rafId);
+  },
+
   _measureAndUpdateScrollProps: function() {
     const scrollComponent = this.getScrollResponder();
     if (!scrollComponent || !scrollComponent.getInnerViewNode) {
diff --git a/Libraries/Lists/ListView/ListViewDataSource.js b/Libraries/Lists/ListView/ListViewDataSource.js
index b046a58bfd2af1..3435d6153a067d 100644
--- a/Libraries/Lists/ListView/ListViewDataSource.js
+++ b/Libraries/Lists/ListView/ListViewDataSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -62,7 +62,7 @@ type ParamType = {
  *
  * ```
  * getInitialState: function() {
- *   var ds = new ListView.DataSource({rowHasChanged: this._rowHasChanged});
+ *   const ds = new ListView.DataSource({rowHasChanged: this._rowHasChanged});
  *   return {ds};
  * },
  * _onDataArrived(newData) {
@@ -356,7 +356,7 @@ class ListViewDataSource {
     const prevSectionsHash = keyedDictionaryFromArray(prevSectionIDs);
     const prevRowsHash = {};
     for (let ii = 0; ii < prevRowIDs.length; ii++) {
-      var sectionID = prevSectionIDs[ii];
+      const sectionID = prevSectionIDs[ii];
       warning(
         !prevRowsHash[sectionID],
         'SectionID appears more than once: ' + sectionID,
@@ -370,7 +370,7 @@ class ListViewDataSource {
 
     let dirty;
     for (let sIndex = 0; sIndex < this.sectionIdentities.length; sIndex++) {
-      var sectionID = this.sectionIdentities[sIndex];
+      const sectionID = this.sectionIdentities[sIndex];
       // dirty if the sectionHeader is new or _sectionHasChanged is true
       dirty = !prevSectionsHash[sectionID];
       const sectionHeaderHasChanged = this._sectionHeaderHasChanged;
diff --git a/Libraries/Lists/ListView/__mocks__/ListViewMock.js b/Libraries/Lists/ListView/__mocks__/ListViewMock.js
index 5e766a75708382..7dd906dd4ad51c 100644
--- a/Libraries/Lists/ListView/__mocks__/ListViewMock.js
+++ b/Libraries/Lists/ListView/__mocks__/ListViewMock.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/MetroListView.js b/Libraries/Lists/MetroListView.js
deleted file mode 100644
index 1d59dba8d16582..00000000000000
--- a/Libraries/Lists/MetroListView.js
+++ /dev/null
@@ -1,203 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
-'use strict';
-
-const ListView = require('ListView');
-const React = require('React');
-const RefreshControl = require('RefreshControl');
-const ScrollView = require('ScrollView');
-
-const invariant = require('fbjs/lib/invariant');
-
-type Item = any;
-
-type NormalProps = {
-  FooterComponent?: React.ComponentType<*>,
-  renderItem: (info: Object) => ?React.Element<any>,
-  /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
-   * suppresses an error when upgrading Flow's support for React. To see the
-   * error delete this comment and run Flow. */
-  renderSectionHeader?: ({section: Object}) => ?React.Element<any>,
-  SeparatorComponent?: ?React.ComponentType<*>, // not supported yet
-
-  // Provide either `items` or `sections`
-  items?: ?Array<Item>, // By default, an Item is assumed to be {key: string}
-  // $FlowFixMe - Something is a little off with the type Array<Item>
-  sections?: ?Array<{key: string, data: Array<Item>}>,
-
-  /**
-   * If provided, a standard RefreshControl will be added for "Pull to Refresh" functionality. Make
-   * sure to also set the `refreshing` prop correctly.
-   */
-  onRefresh?: ?Function,
-  /**
-   * Set this true while waiting for new data from a refresh.
-   */
-  refreshing?: boolean,
-  /**
-   * If true, renders items next to each other horizontally instead of stacked vertically.
-   */
-  horizontal?: ?boolean,
-};
-type DefaultProps = {
-  keyExtractor: (item: Item, index: number) => string,
-};
-type Props = NormalProps & DefaultProps;
-
-/**
- * This is just a wrapper around the legacy ListView that matches the new API of FlatList, but with
- * some section support tacked on. It is recommended to just use FlatList directly, this component
- * is mostly for debugging and performance comparison.
- */
-class MetroListView extends React.Component<Props, $FlowFixMeState> {
-  scrollToEnd(params?: ?{animated?: ?boolean}) {
-    throw new Error('scrollToEnd not supported in legacy ListView.');
-  }
-  scrollToIndex(params: {
-    animated?: ?boolean,
-    index: number,
-    viewPosition?: number,
-  }) {
-    throw new Error('scrollToIndex not supported in legacy ListView.');
-  }
-  scrollToItem(params: {
-    animated?: ?boolean,
-    item: Item,
-    viewPosition?: number,
-  }) {
-    throw new Error('scrollToItem not supported in legacy ListView.');
-  }
-  scrollToLocation(params: {
-    animated?: ?boolean,
-    itemIndex: number,
-    sectionIndex: number,
-    viewOffset?: number,
-    viewPosition?: number,
-  }) {
-    throw new Error('scrollToLocation not supported in legacy ListView.');
-  }
-  scrollToOffset(params: {animated?: ?boolean, offset: number}) {
-    const {animated, offset} = params;
-    // $FlowFixMe Invalid prop usage
-    this._listRef.scrollTo(
-      this.props.horizontal ? {x: offset, animated} : {y: offset, animated},
-    );
-  }
-  getListRef() {
-    return this._listRef;
-  }
-  setNativeProps(props: Object) {
-    if (this._listRef) {
-      this._listRef.setNativeProps(props);
-    }
-  }
-  static defaultProps: DefaultProps = {
-    keyExtractor: (item, index) => item.key || String(index),
-    renderScrollComponent: (props: Props) => {
-      if (props.onRefresh) {
-        return (
-          // $FlowFixMe Invalid prop usage
-          <ScrollView
-            {...props}
-            refreshControl={
-              /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss)
-               * This comment suppresses an error when upgrading Flow's support
-               * for React. To see the error delete this comment and run Flow.
-               */
-              <RefreshControl
-                refreshing={props.refreshing}
-                onRefresh={props.onRefresh}
-              />
-            }
-          />
-        );
-      } else {
-        // $FlowFixMe Invalid prop usage
-        return <ScrollView {...props} />;
-      }
-    },
-  };
-  state = this._computeState(this.props, {
-    ds: new ListView.DataSource({
-      rowHasChanged: (itemA, itemB) => true,
-      sectionHeaderHasChanged: () => true,
-      getSectionHeaderData: (dataBlob, sectionID) =>
-        this.state.sectionHeaderData[sectionID],
-    }),
-    sectionHeaderData: {},
-  });
-  UNSAFE_componentWillReceiveProps(newProps: Props) {
-    this.setState(state => this._computeState(newProps, state));
-  }
-  render() {
-    return (
-      // $FlowFixMe Found when typing ListView
-      <ListView
-        {...this.props}
-        dataSource={this.state.ds}
-        ref={this._captureRef}
-        renderRow={this._renderRow}
-        renderFooter={this.props.FooterComponent && this._renderFooter}
-        renderSectionHeader={this.props.sections && this._renderSectionHeader}
-        renderSeparator={this.props.SeparatorComponent && this._renderSeparator}
-      />
-    );
-  }
-  _listRef: ?ListView;
-  _captureRef = ref => {
-    this._listRef = ref;
-  };
-  _computeState(props: Props, state) {
-    const sectionHeaderData = {};
-    if (props.sections) {
-      invariant(!props.items, 'Cannot have both sections and items props.');
-      const sections = {};
-      props.sections.forEach((sectionIn, ii) => {
-        const sectionID = 's' + ii;
-        sections[sectionID] = sectionIn.data;
-        sectionHeaderData[sectionID] = sectionIn;
-      });
-      return {
-        ds: state.ds.cloneWithRowsAndSections(sections),
-        sectionHeaderData,
-      };
-    } else {
-      invariant(!props.sections, 'Cannot have both sections and items props.');
-      return {
-        // $FlowFixMe Found when typing ListView
-        ds: state.ds.cloneWithRows(props.items),
-        sectionHeaderData,
-      };
-    }
-  }
-  /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
-   * suppresses an error when upgrading Flow's support for React. To see the
-   * error delete this comment and run Flow. */
-  _renderFooter = () => <this.props.FooterComponent key="$footer" />;
-  _renderRow = (item, sectionID, rowID, highlightRow) => {
-    return this.props.renderItem({item, index: rowID});
-  };
-  _renderSectionHeader = (section, sectionID) => {
-    const {renderSectionHeader} = this.props;
-    invariant(
-      renderSectionHeader,
-      'Must provide renderSectionHeader with sections prop',
-    );
-    return renderSectionHeader({section});
-  };
-  _renderSeparator = (sID, rID) => (
-    /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
-     * suppresses an error when upgrading Flow's support for React. To see the
-     * error delete this comment and run Flow. */
-    <this.props.SeparatorComponent key={sID + rID} />
-  );
-}
-
-module.exports = MetroListView;
diff --git a/Libraries/Lists/SectionList.js b/Libraries/Lists/SectionList.js
index a2a4177cede3c9..4e26bf6cfb9b5a 100644
--- a/Libraries/Lists/SectionList.js
+++ b/Libraries/Lists/SectionList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,6 @@
  */
 'use strict';
 
-const MetroListView = require('MetroListView');
 const Platform = require('Platform');
 const React = require('React');
 const ScrollView = require('ScrollView');
@@ -183,7 +182,10 @@ type OptionalProps<SectionT: SectionBase<any>> = {
    */
   stickySectionHeadersEnabled?: boolean,
 
-  legacyImplementation?: ?boolean,
+  /**
+   * The legacy implementation is no longer supported.
+   */
+  legacyImplementation?: empty,
 };
 
 export type Props<SectionT> = RequiredProps<SectionT> &
@@ -276,7 +278,9 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
     viewOffset?: number,
     viewPosition?: number,
   }) {
-    this._wrapperListRef.scrollToLocation(params);
+    if (this._wrapperListRef != null) {
+      this._wrapperListRef.scrollToLocation(params);
+    }
   }
 
   /**
@@ -286,7 +290,6 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
    */
   recordInteraction() {
     const listRef = this._wrapperListRef && this._wrapperListRef.getListRef();
-    // $FlowFixMe Found when typing ListView
     listRef && listRef.recordInteraction();
   }
 
@@ -325,20 +328,14 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
   }
 
   render() {
-    const List = this.props.legacyImplementation
-      ? MetroListView
-      : VirtualizedSectionList;
     /* $FlowFixMe(>=0.66.0 site=react_native_fb) This comment suppresses an
      * error found when Flow v0.66 was deployed. To see the error delete this
      * comment and run Flow. */
-    return <List {...this.props} ref={this._captureRef} />;
+    return <VirtualizedSectionList {...this.props} ref={this._captureRef} />;
   }
 
-  _wrapperListRef: MetroListView | VirtualizedSectionList<any>;
+  _wrapperListRef: ?React.ElementRef<typeof VirtualizedSectionList>;
   _captureRef = ref => {
-    /* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
-     * suppresses an error when upgrading Flow's support for React. To see the
-     * error delete this comment and run Flow. */
     this._wrapperListRef = ref;
   };
 }
diff --git a/Libraries/Lists/ViewabilityHelper.js b/Libraries/Lists/ViewabilityHelper.js
index 415e77895360da..6408845f660346 100644
--- a/Libraries/Lists/ViewabilityHelper.js
+++ b/Libraries/Lists/ViewabilityHelper.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/VirtualizeUtils.js b/Libraries/Lists/VirtualizeUtils.js
index b47ceda1fece63..ba8f48a5030ae5 100644
--- a/Libraries/Lists/VirtualizeUtils.js
+++ b/Libraries/Lists/VirtualizeUtils.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index da95acd9ceaf22..5c15a42c8c8836 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -32,7 +32,7 @@ const warning = require('fbjs/lib/warning');
 
 const {computeWindowedRenderLimits} = require('VirtualizeUtils');
 
-import type {DangerouslyImpreciseStyleProp, ViewStyleProp} from 'StyleSheet';
+import type {ViewStyleProp} from 'StyleSheet';
 import type {
   ViewabilityConfig,
   ViewToken,
@@ -693,7 +693,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   }
 
   static getDerivedStateFromProps(newProps: Props, prevState: State) {
-    const {data, extraData, getItemCount, maxToRenderPerBatch} = newProps;
+    const {data, getItemCount, maxToRenderPerBatch} = newProps;
     // first and last could be stale (e.g. if a new, shorter items props is passed in), so we make
     // sure we're rendering a reasonable range here.
     return {
@@ -711,7 +711,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     stickyIndicesFromProps: Set<number>,
     first: number,
     last: number,
-    inversionStyle: ?DangerouslyImpreciseStyleProp,
+    inversionStyle: ViewStyleProp,
   ) {
     const {
       CellRendererComponent,
@@ -998,7 +998,6 @@ class VirtualizedList extends React.PureComponent<Props, State> {
       (this.props.renderScrollComponent || this._defaultRenderScrollComponent)(
         scrollProps,
       ),
-      // $FlowFixMe Invalid prop usage
       {
         ref: this._captureScrollRef,
       },
@@ -1006,7 +1005,7 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     );
     if (this.props.debug) {
       return (
-        <View style={{flex: 1}}>
+        <View style={styles.debug}>
           {ret}
           {this._renderDebugOverlay()}
         </View>
@@ -1171,28 +1170,40 @@ class VirtualizedList extends React.PureComponent<Props, State> {
   };
 
   measureLayoutRelativeToContainingList(): void {
-    UIManager.measureLayout(
-      ReactNative.findNodeHandle(this),
-      ReactNative.findNodeHandle(
-        this.context.virtualizedList.getOutermostParentListRef(),
-      ),
-      error => {
-        console.warn(
-          "VirtualizedList: Encountered an error while measuring a list's" +
-            ' offset from its containing VirtualizedList.',
-        );
-      },
-      (x, y, width, height) => {
-        this._offsetFromParentVirtualizedList = this._selectOffset({x, y});
-        this._scrollMetrics.contentLength = this._selectLength({width, height});
-
-        const scrollMetrics = this._convertParentScrollMetrics(
-          this.context.virtualizedList.getScrollMetrics(),
-        );
-        this._scrollMetrics.visibleLength = scrollMetrics.visibleLength;
-        this._scrollMetrics.offset = scrollMetrics.offset;
-      },
-    );
+    // TODO (T35574538): findNodeHandle sometimes crashes with "Unable to find
+    // node on an unmounted component" during scrolling
+    try {
+      UIManager.measureLayout(
+        ReactNative.findNodeHandle(this),
+        ReactNative.findNodeHandle(
+          this.context.virtualizedList.getOutermostParentListRef(),
+        ),
+        error => {
+          console.warn(
+            "VirtualizedList: Encountered an error while measuring a list's" +
+              ' offset from its containing VirtualizedList.',
+          );
+        },
+        (x, y, width, height) => {
+          this._offsetFromParentVirtualizedList = this._selectOffset({x, y});
+          this._scrollMetrics.contentLength = this._selectLength({
+            width,
+            height,
+          });
+
+          const scrollMetrics = this._convertParentScrollMetrics(
+            this.context.virtualizedList.getScrollMetrics(),
+          );
+          this._scrollMetrics.visibleLength = scrollMetrics.visibleLength;
+          this._scrollMetrics.offset = scrollMetrics.offset;
+        },
+      );
+    } catch (error) {
+      console.warn(
+        'measureLayoutRelativeToContainingList threw an error',
+        error.stack,
+      );
+    }
   }
 
   _onLayout = (e: Object) => {
@@ -1314,47 +1325,41 @@ class VirtualizedList extends React.PureComponent<Props, State> {
     const windowLen = frameLast.offset + frameLast.length - windowTop;
     const visTop = this._scrollMetrics.offset;
     const visLen = this._scrollMetrics.visibleLength;
-    const baseStyle = {position: 'absolute', top: 0, right: 0};
+
     return (
-      <View
-        style={{
-          ...baseStyle,
-          bottom: 0,
-          width: 20,
-          borderColor: 'blue',
-          borderWidth: 1,
-        }}>
+      <View style={[styles.debugOverlayBase, styles.debugOverlay]}>
         {framesInLayout.map((f, ii) => (
           <View
             key={'f' + ii}
-            style={{
-              ...baseStyle,
-              left: 0,
-              top: f.offset * normalize,
-              height: f.length * normalize,
-              backgroundColor: 'orange',
-            }}
+            style={[
+              styles.debugOverlayBase,
+              styles.debugOverlayFrame,
+              {
+                top: f.offset * normalize,
+                height: f.length * normalize,
+              },
+            ]}
           />
         ))}
         <View
-          style={{
-            ...baseStyle,
-            left: 0,
-            top: windowTop * normalize,
-            height: windowLen * normalize,
-            borderColor: 'green',
-            borderWidth: 2,
-          }}
+          style={[
+            styles.debugOverlayBase,
+            styles.debugOverlayFrameLast,
+            {
+              top: windowTop * normalize,
+              height: windowLen * normalize,
+            },
+          ]}
         />
         <View
-          style={{
-            ...baseStyle,
-            left: 0,
-            top: visTop * normalize,
-            height: visLen * normalize,
-            borderColor: 'red',
-            borderWidth: 2,
-          }}
+          style={[
+            styles.debugOverlayBase,
+            styles.debugOverlayFrameVis,
+            {
+              top: visTop * normalize,
+              height: visLen * normalize,
+            },
+          ]}
         />
       </View>
     );
@@ -1750,7 +1755,7 @@ class CellRenderer extends React.Component<
     fillRateHelper: FillRateHelper,
     horizontal: ?boolean,
     index: number,
-    inversionStyle: ?DangerouslyImpreciseStyleProp,
+    inversionStyle: ViewStyleProp,
     isSelected: ?boolean, // TODO(macOS ISS#2323203)
     item: Item,
     onLayout: (event: Object) => void, // This is extracted by ScrollViewStickyHeader
@@ -1908,6 +1913,34 @@ const styles = StyleSheet.create({
   horizontallyInverted: {
     transform: [{scaleX: -1}],
   },
+  debug: {
+    flex: 1,
+  },
+  debugOverlayBase: {
+    position: 'absolute',
+    top: 0,
+    right: 0,
+  },
+  debugOverlay: {
+    bottom: 0,
+    width: 20,
+    borderColor: 'blue',
+    borderWidth: 1,
+  },
+  debugOverlayFrame: {
+    left: 0,
+    backgroundColor: 'orange',
+  },
+  debugOverlayFrameLast: {
+    left: 0,
+    borderColor: 'green',
+    borderWidth: 2,
+  },
+  debugOverlayFrameVis: {
+    left: 0,
+    borderColor: 'red',
+    borderWidth: 2,
+  },
 });
 
 module.exports = VirtualizedList;
diff --git a/Libraries/Lists/VirtualizedSectionList.js b/Libraries/Lists/VirtualizedSectionList.js
index de23bd130b7662..962d1823fbb56b 100644
--- a/Libraries/Lists/VirtualizedSectionList.js
+++ b/Libraries/Lists/VirtualizedSectionList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__flowtests__/FlatList-flowtest.js b/Libraries/Lists/__flowtests__/FlatList-flowtest.js
index de52ce482e1f92..766aad581bf1a3 100644
--- a/Libraries/Lists/__flowtests__/FlatList-flowtest.js
+++ b/Libraries/Lists/__flowtests__/FlatList-flowtest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__flowtests__/SectionList-flowtest.js b/Libraries/Lists/__flowtests__/SectionList-flowtest.js
index 93fa77c4631682..07b2adc9eea5f5 100644
--- a/Libraries/Lists/__flowtests__/SectionList-flowtest.js
+++ b/Libraries/Lists/__flowtests__/SectionList-flowtest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/FillRateHelper-test.js b/Libraries/Lists/__tests__/FillRateHelper-test.js
index 612d02c5bf9ab0..20845c862ccbe3 100644
--- a/Libraries/Lists/__tests__/FillRateHelper-test.js
+++ b/Libraries/Lists/__tests__/FillRateHelper-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/FlatList-test.js b/Libraries/Lists/__tests__/FlatList-test.js
index 28dd377bd13862..e0ae3805c5a997 100644
--- a/Libraries/Lists/__tests__/FlatList-test.js
+++ b/Libraries/Lists/__tests__/FlatList-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/SectionList-test.js b/Libraries/Lists/__tests__/SectionList-test.js
index f669879df839d9..c626d3ce9c3967 100644
--- a/Libraries/Lists/__tests__/SectionList-test.js
+++ b/Libraries/Lists/__tests__/SectionList-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/ViewabilityHelper-test.js b/Libraries/Lists/__tests__/ViewabilityHelper-test.js
index ed94f7f7e253d2..389e2a941c412b 100644
--- a/Libraries/Lists/__tests__/ViewabilityHelper-test.js
+++ b/Libraries/Lists/__tests__/ViewabilityHelper-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/VirtualizeUtils-test.js b/Libraries/Lists/__tests__/VirtualizeUtils-test.js
index 2361a86aaeff62..7e75993872faba 100644
--- a/Libraries/Lists/__tests__/VirtualizeUtils-test.js
+++ b/Libraries/Lists/__tests__/VirtualizeUtils-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Lists/__tests__/VirtualizedList-test.js b/Libraries/Lists/__tests__/VirtualizedList-test.js
index 14aec9140f1195..e6dbe5a7d25a71 100644
--- a/Libraries/Lists/__tests__/VirtualizedList-test.js
+++ b/Libraries/Lists/__tests__/VirtualizedList-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Modal/Modal.js b/Libraries/Modal/Modal.js
index 1af6fec61486d6..e39005e7324c16 100644
--- a/Libraries/Modal/Modal.js
+++ b/Libraries/Modal/Modal.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,7 +20,6 @@ const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
 const View = require('View');
 
-const deprecatedPropType = require('deprecatedPropType');
 const requireNativeComponent = require('requireNativeComponent');
 
 const RCTModalHostView = requireNativeComponent('RCTModalHostView');
@@ -31,6 +30,8 @@ const ModalEventEmitter =
     : null;
 
 import type EmitterSubscription from 'EmitterSubscription';
+import type {ViewProps} from 'ViewPropTypes';
+import type {SyntheticEvent} from 'CoreEventTypes';
 
 /**
  * The Modal component is a simple way to present content above an enclosing view.
@@ -44,95 +45,110 @@ import type EmitterSubscription from 'EmitterSubscription';
 // destroyed before the callback is fired.
 let uniqueModalIdentifier = 0;
 
-class Modal extends React.Component<Object> {
-  static propTypes = {
-    /**
-     * The `animationType` prop controls how the modal animates.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#animationtype
-     */
-    animationType: PropTypes.oneOf(['none', 'slide', 'fade']),
-    /**
-     * The `presentationStyle` prop controls how the modal appears.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#presentationstyle
-     */
-    presentationStyle: PropTypes.oneOf([
-      'fullScreen',
-      'pageSheet',
-      'formSheet',
-      'overFullScreen',
-    ]),
-    /**
-     * The `transparent` prop determines whether your modal will fill the
-     * entire view.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#transparent
-     */
-    transparent: PropTypes.bool,
-    /**
-     * The `hardwareAccelerated` prop controls whether to force hardware
-     * acceleration for the underlying window.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#hardwareaccelerated
-     */
-    hardwareAccelerated: PropTypes.bool,
-    /**
-     * The `visible` prop determines whether your modal is visible.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#visible
-     */
-    visible: PropTypes.bool,
-    /**
-     * The `onRequestClose` callback is called when the user taps the hardware
-     * back button on Android or the menu button on Apple TV.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#onrequestclose
-     */
-    onRequestClose:
-      Platform.isTV || Platform.OS === 'android'
-        ? PropTypes.func.isRequired
-        : PropTypes.func,
-    /**
-     * The `onShow` prop allows passing a function that will be called once the
-     * modal has been shown.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#onshow
-     */
-    onShow: PropTypes.func,
-    /**
-     * The `onDismiss` prop allows passing a function that will be called once
-     * the modal has been dismissed.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#ondismiss
-     */
-    onDismiss: PropTypes.func,
-    animated: deprecatedPropType(
-      PropTypes.bool,
-      'Use the `animationType` prop instead.',
-    ),
-    /**
-     * The `supportedOrientations` prop allows the modal to be rotated to any of the specified orientations.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#supportedorientations
-     */
-    supportedOrientations: PropTypes.arrayOf(
-      PropTypes.oneOf([
-        'portrait',
-        'portrait-upside-down',
-        'landscape',
-        'landscape-left',
-        'landscape-right',
-      ]),
-    ),
-    /**
-     * The `onOrientationChange` callback is called when the orientation changes while the modal is being displayed.
-     *
-     * See https://facebook.github.io/react-native/docs/modal.html#onorientationchange
-     */
-    onOrientationChange: PropTypes.func,
-  };
+type OrientationChangeEvent = SyntheticEvent<
+  $ReadOnly<{|
+    orientation: 'portrait' | 'landscape',
+  |}>,
+>;
+
+type Props = $ReadOnly<{|
+  ...ViewProps,
+
+  /**
+   * The `animationType` prop controls how the modal animates.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#animationtype
+   */
+  animationType?: ?('none' | 'slide' | 'fade'),
+
+  /**
+   * The `presentationStyle` prop controls how the modal appears.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#presentationstyle
+   */
+  presentationStyle?: ?(
+    | 'fullScreen'
+    | 'pageSheet'
+    | 'formSheet'
+    | 'overFullScreen'
+  ),
+
+  /**
+   * The `transparent` prop determines whether your modal will fill the
+   * entire view.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#transparent
+   */
+  transparent?: ?boolean,
+
+  /**
+   * The `hardwareAccelerated` prop controls whether to force hardware
+   * acceleration for the underlying window.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#hardwareaccelerated
+   */
+  hardwareAccelerated?: ?boolean,
+
+  /**
+   * The `visible` prop determines whether your modal is visible.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#visible
+   */
+  visible?: ?boolean,
+
+  /**
+   * The `onRequestClose` callback is called when the user taps the hardware
+   * back button on Android or the menu button on Apple TV.
+   *
+   * This is required on Apple TV and Android.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#onrequestclose
+   */
+  onRequestClose?: ?(event?: SyntheticEvent<null>) => mixed,
+
+  /**
+   * The `onShow` prop allows passing a function that will be called once the
+   * modal has been shown.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#onshow
+   */
+  onShow?: ?(event?: SyntheticEvent<null>) => mixed,
+
+  /**
+   * The `onDismiss` prop allows passing a function that will be called once
+   * the modal has been dismissed.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#ondismiss
+   */
+  onDismiss?: ?() => mixed,
+
+  /**
+   * Deprecated. Use the `animationType` prop instead.
+   */
+  animated?: ?boolean,
+
+  /**
+   * The `supportedOrientations` prop allows the modal to be rotated to any of the specified orientations.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#supportedorientations
+   */
+  supportedOrientations?: ?$ReadOnlyArray<
+    | 'portrait'
+    | 'portrait-upside-down'
+    | 'landscape'
+    | 'landscape-left'
+    | 'landscape-right',
+  >,
+
+  /**
+   * The `onOrientationChange` callback is called when the orientation changes while the modal is being displayed.
+   *
+   * See https://facebook.github.io/react-native/docs/modal.html#onorientationchange
+   */
+  onOrientationChange?: ?(event: OrientationChangeEvent) => mixed,
+|}>;
 
+class Modal extends React.Component<Props> {
   static defaultProps = {
     visible: true,
     hardwareAccelerated: false,
@@ -145,7 +161,7 @@ class Modal extends React.Component<Object> {
   _identifier: number;
   _eventSubscription: ?EmitterSubscription;
 
-  constructor(props: Object) {
+  constructor(props: Props) {
     super(props);
     Modal._confirmProps(props);
     this._identifier = uniqueModalIdentifier++;
@@ -182,11 +198,11 @@ class Modal extends React.Component<Object> {
     }
   }
 
-  UNSAFE_componentWillReceiveProps(nextProps: Object) {
+  UNSAFE_componentWillReceiveProps(nextProps: Props) {
     Modal._confirmProps(nextProps);
   }
 
-  static _confirmProps(props: Object) {
+  static _confirmProps(props: Props) {
     if (
       props.presentationStyle &&
       props.presentationStyle !== 'overFullScreen' &&
@@ -201,7 +217,7 @@ class Modal extends React.Component<Object> {
   }
 
   render(): React.Node {
-    if (this.props.visible === false) {
+    if (this.props.visible !== true) {
       return null;
     }
 
diff --git a/Libraries/NativeAnimation/Drivers/RCTAnimationDriver.h b/Libraries/NativeAnimation/Drivers/RCTAnimationDriver.h
index 40763fd5b3a281..915606c2d2a993 100644
--- a/Libraries/NativeAnimation/Drivers/RCTAnimationDriver.h
+++ b/Libraries/NativeAnimation/Drivers/RCTAnimationDriver.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.h b/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.h
index d6ae6701e6ef99..f4aeaee2fce758 100644
--- a/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.h
+++ b/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.m b/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.m
index f617313ede6703..7b45202af1648b 100644
--- a/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.m
+++ b/Libraries/NativeAnimation/Drivers/RCTDecayAnimation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 #import <React/RCTUIKit.h> // TODO(macOS ISS#2323203)
 #import <React/RCTConvert.h>
 
+#import "RCTAnimationUtils.h"
 #import "RCTValueAnimatedNode.h"
 
 @interface RCTDecayAnimation ()
@@ -100,7 +101,7 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
 
   CGFloat value = _fromValue +
     (_velocity / (1 - _deceleration)) *
-    (1 - exp(-(1 - _deceleration) * (currentTime - _frameStartTime) * 1000.0));
+    (1 - exp(-(1 - _deceleration) * (currentTime - _frameStartTime) * 1000.0 / RCTAnimationDragCoefficient()));
 
   [self updateValue:value];
 
diff --git a/Libraries/NativeAnimation/Drivers/RCTEventAnimation.h b/Libraries/NativeAnimation/Drivers/RCTEventAnimation.h
index c6b6f7979b28bc..db90f961c0bdb2 100644
--- a/Libraries/NativeAnimation/Drivers/RCTEventAnimation.h
+++ b/Libraries/NativeAnimation/Drivers/RCTEventAnimation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTEventAnimation.m b/Libraries/NativeAnimation/Drivers/RCTEventAnimation.m
index 9c35b13fc237fa..7ae667bb833df0 100644
--- a/Libraries/NativeAnimation/Drivers/RCTEventAnimation.m
+++ b/Libraries/NativeAnimation/Drivers/RCTEventAnimation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.h b/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.h
index 979c45a8c32dfe..3f66d3465bf6f0 100644
--- a/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.h
+++ b/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.m b/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.m
index e058d01439d38f..1ca342a95486ab 100644
--- a/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.m
+++ b/Libraries/NativeAnimation/Drivers/RCTFrameAnimation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -97,7 +97,7 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
   }
 
   _animationCurrentTime = currentTime;
-  NSTimeInterval currentDuration = _animationCurrentTime - _animationStartTime;
+  NSTimeInterval currentDuration = (_animationCurrentTime - _animationStartTime) / RCTAnimationDragCoefficient();
 
   // Determine how many frames have passed since last update.
   // Get index of frames that surround the current interval
diff --git a/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.h b/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.h
index fe721f61d09d1a..2369cd8e06f311 100644
--- a/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.h
+++ b/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.m b/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.m
index 9ceabdbf233588..d24d553bc78b25 100644
--- a/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.m
+++ b/Libraries/NativeAnimation/Drivers/RCTSpringAnimation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,6 +12,7 @@
 #import <React/RCTConvert.h>
 #import <React/RCTDefines.h>
 
+#import "RCTAnimationUtils.h"
 #import "RCTValueAnimatedNode.h"
 
 @interface RCTSpringAnimation ()
@@ -45,7 +46,7 @@ @implementation RCTSpringAnimation
 
   NSInteger _iterations;
   NSInteger _currentLoop;
-  
+
   NSTimeInterval _t; // Current time (startTime + dt)
 }
 
@@ -110,7 +111,7 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
     // Animation has not begun or animation has already finished.
     return;
   }
-  
+
   // calculate delta time
   NSTimeInterval deltaTime;
   if(_animationStartTime == -1) {
@@ -120,22 +121,22 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
   } else {
     // Handle frame drops, and only advance dt by a max of MAX_DELTA_TIME
     deltaTime = MIN(MAX_DELTA_TIME, currentTime - _animationCurrentTime);
-    _t = _t + deltaTime;
+    _t = _t + deltaTime / RCTAnimationDragCoefficient();
   }
-  
+
   // store the timestamp
   _animationCurrentTime = currentTime;
-  
+
   CGFloat c = _damping;
   CGFloat m = _mass;
   CGFloat k = _stiffness;
   CGFloat v0 = -_initialVelocity;
-  
+
   CGFloat zeta = c / (2 * sqrtf(k * m));
   CGFloat omega0 = sqrtf(k / m);
   CGFloat omega1 = omega0 * sqrtf(1.0 - (zeta * zeta));
   CGFloat x0 = _toValue - _fromValue;
-  
+
   CGFloat position;
   CGFloat velocity;
   if (zeta < 1) {
@@ -163,12 +164,12 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
     velocity =
       envelope * (v0 * (_t * omega0 - 1) + _t * x0 * (omega0 * omega0));
   }
-  
+
   _lastPosition = position;
   _lastVelocity = velocity;
-  
+
   [self onUpdate:position];
-  
+
   // Conditions for stopping the spring animation
   BOOL isOvershooting = NO;
   if (_overshootClamping && _stiffness != 0) {
@@ -183,7 +184,7 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
   if (_stiffness != 0) {
     isDisplacement = ABS(_toValue - position) <= _restDisplacementThreshold;
   }
-  
+
   if (isOvershooting || (isVelocity && isDisplacement)) {
     if (_stiffness != 0) {
       // Ensure that we end up with a round value
@@ -192,7 +193,7 @@ - (void)stepAnimationWithTime:(NSTimeInterval)currentTime
       }
       [self onUpdate:_toValue];
     }
-    
+
     if (_iterations == -1 || _currentLoop < _iterations) {
       _lastPosition = _fromValue;
       _lastVelocity = _initialVelocity;
diff --git a/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.h
index 0e2853df2cc151..fba81d61ad79fe 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.m
index 0bfb4d576be9b6..dfb6f92a2999df 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTAdditionAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
index e9d000910ffe3b..81b5b8b903b29e 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
index 71397403a09e72..7d9a2fc6f7e4fb 100644
--- a/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.h
index 5d89091eafcebc..ca725866d4b904 100644
--- a/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.m
index f2e7d8cd0574a5..569741722ab74f 100644
--- a/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTDiffClampAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.h
index 0702012dbab1ec..4a6168f2c1e64e 100644
--- a/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.m
index a66807c3d3f878..d2cd3a1336c95c 100644
--- a/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTDivisionAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.h
index e083525d688da2..aa01c81c6b1213 100644
--- a/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m
index b7fa8b50974d23..0fbaf57d4b4ac4 100644
--- a/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.h
index 08de0e1aee2f27..319dab5a57952d 100644
--- a/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.m
index c2802741d23789..e9b6f13b2a464d 100644
--- a/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTModuloAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.h
index 481c3d5aa5b310..55c396b8e95f5a 100644
--- a/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.m
index 29c151aed3f9a1..05a664e2e7483a 100644
--- a/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTMultiplicationAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.h
index 24919120a951b4..4bf39fe3e00726 100644
--- a/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.m
index 24fb1e82da888c..473a921ba3534c 100644
--- a/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.h
index 637b120c48a42a..b1181a4da977fd 100644
--- a/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.m
index a62d0309306620..665545be9b4edc 100644
--- a/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTStyleAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.h
index 45524b69d02591..5f0cdb6f4de14a 100644
--- a/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.m
index 91688c9aec51a6..c5489d15abb3b8 100644
--- a/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTSubtractionAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.h
index 99e9bd1112a60e..22e5fed8f2e671 100644
--- a/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.m
index 42150285da4cd2..337a1555373ae9 100644
--- a/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTTrackingAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.h
index 59d6951def67ad..b72788acc872b0 100644
--- a/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.m
index fd8ca221f93c72..708cd846455693 100644
--- a/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTTransformAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.h b/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.h
index 98de11372ec1f6..e6ce1ff2801f6b 100644
--- a/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.h
+++ b/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.m b/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.m
index c433bba3414c81..949fcad137ff2e 100644
--- a/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.m
+++ b/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/RCTAnimationUtils.h b/Libraries/NativeAnimation/RCTAnimationUtils.h
index d1dba830ee96aa..39f2fe470bedd2 100644
--- a/Libraries/NativeAnimation/RCTAnimationUtils.h
+++ b/Libraries/NativeAnimation/RCTAnimationUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -30,3 +30,9 @@ RCT_EXTERN CGFloat RCTInterpolateValue(CGFloat value,
 
 RCT_EXTERN CGFloat RCTRadiansToDegrees(CGFloat radians);
 RCT_EXTERN CGFloat RCTDegreesToRadians(CGFloat degrees);
+
+/**
+ * Coefficient to slow down animations, respects the ios
+ * simulator `Slow Animations (⌘T)` option.
+ */
+RCT_EXTERN CGFloat RCTAnimationDragCoefficient(void);
diff --git a/Libraries/NativeAnimation/RCTAnimationUtils.m b/Libraries/NativeAnimation/RCTAnimationUtils.m
index 8f8d4cfb817a72..bd4b2c33e249ce 100644
--- a/Libraries/NativeAnimation/RCTAnimationUtils.m
+++ b/Libraries/NativeAnimation/RCTAnimationUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -93,3 +93,23 @@ CGFloat RCTDegreesToRadians(CGFloat degrees)
 {
   return degrees / 180.0 * M_PI;
 }
+
+#if TARGET_IPHONE_SIMULATOR
+// Based on https://stackoverflow.com/a/13307674
+float UIAnimationDragCoefficient(void);
+#endif
+
+CGFloat RCTAnimationDragCoefficient()
+{
+#if TARGET_IPHONE_SIMULATOR
+  if (NSClassFromString(@"XCTest") != nil) {
+    // UIAnimationDragCoefficient is 10.0 in tests for some reason, but
+    // we need it to be 1.0. Fixes T34233294
+    return 1.0;
+  } else {
+    return (CGFloat)UIAnimationDragCoefficient();
+  }
+#else
+  return 1.0;
+#endif
+}
diff --git a/Libraries/NativeAnimation/RCTNativeAnimatedModule.h b/Libraries/NativeAnimation/RCTNativeAnimatedModule.h
index 5ca4e95bd82562..b4af40c71e2227 100644
--- a/Libraries/NativeAnimation/RCTNativeAnimatedModule.h
+++ b/Libraries/NativeAnimation/RCTNativeAnimatedModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/RCTNativeAnimatedModule.m b/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
index 2032f3a01a03c8..57f08034e177a1 100644
--- a/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
+++ b/Libraries/NativeAnimation/RCTNativeAnimatedModule.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.h b/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.h
index 36e4ffeba86a94..d5ba6128a0375d 100644
--- a/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.h
+++ b/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,6 +12,8 @@
 
 @protocol RCTValueAnimatedNodeObserver;
 
+@protocol RCTValueAnimatedNodeObserver;
+
 @interface RCTNativeAnimatedNodesManager : NSObject
 
 - (nonnull instancetype)initWithUIManager:(nonnull RCTUIManager *)uiManager;
diff --git a/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.m b/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.m
index e649020d5f301f..30ec0e42dafc05 100644
--- a/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.m
+++ b/Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/FormData.js b/Libraries/Network/FormData.js
index a9de18c067c823..ff618c0180a272 100644
--- a/Libraries/Network/FormData.js
+++ b/Libraries/Network/FormData.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/NetInfo.js b/Libraries/Network/NetInfo.js
index 15edd286106b13..0221b2bc3228c2 100644
--- a/Libraries/Network/NetInfo.js
+++ b/Libraries/Network/NetInfo.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 
 'use strict';
 
-const Map = require('Map');
 const NativeEventEmitter = require('NativeEventEmitter');
 const NativeModules = require('NativeModules');
 const Platform = require('Platform');
diff --git a/Libraries/Network/RCTDataRequestHandler.h b/Libraries/Network/RCTDataRequestHandler.h
index b0ded9161f283a..9beaa7e0c8a32b 100644
--- a/Libraries/Network/RCTDataRequestHandler.h
+++ b/Libraries/Network/RCTDataRequestHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTDataRequestHandler.m b/Libraries/Network/RCTDataRequestHandler.m
index f0e36dfb472654..2a7c42c6a10bf1 100644
--- a/Libraries/Network/RCTDataRequestHandler.m
+++ b/Libraries/Network/RCTDataRequestHandler.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTFileRequestHandler.h b/Libraries/Network/RCTFileRequestHandler.h
index 7ee7952c5259d9..843d0b12712727 100644
--- a/Libraries/Network/RCTFileRequestHandler.h
+++ b/Libraries/Network/RCTFileRequestHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTFileRequestHandler.m b/Libraries/Network/RCTFileRequestHandler.m
index b66175a11887e2..77427ccc61effc 100644
--- a/Libraries/Network/RCTFileRequestHandler.m
+++ b/Libraries/Network/RCTFileRequestHandler.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTHTTPRequestHandler.h b/Libraries/Network/RCTHTTPRequestHandler.h
index 5148e6a510cc42..74d5fbd74b07e5 100644
--- a/Libraries/Network/RCTHTTPRequestHandler.h
+++ b/Libraries/Network/RCTHTTPRequestHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTHTTPRequestHandler.mm b/Libraries/Network/RCTHTTPRequestHandler.mm
index 6376ad31c812b2..4d922f52d0c750 100644
--- a/Libraries/Network/RCTHTTPRequestHandler.mm
+++ b/Libraries/Network/RCTHTTPRequestHandler.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetInfo.h b/Libraries/Network/RCTNetInfo.h
index e38162d2dcbb7b..71a04eeba84d77 100644
--- a/Libraries/Network/RCTNetInfo.h
+++ b/Libraries/Network/RCTNetInfo.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetInfo.m b/Libraries/Network/RCTNetInfo.m
index ec1abd3dbb397e..42166e83a831c4 100644
--- a/Libraries/Network/RCTNetInfo.m
+++ b/Libraries/Network/RCTNetInfo.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -36,12 +36,14 @@
 
 @implementation RCTNetInfo
 {
+  SCNetworkReachabilityRef _firstTimeReachability;
   SCNetworkReachabilityRef _reachability;
   NSString *_connectionType;
   NSString *_effectiveConnectionType;
   NSString *_statusDeprecated;
   NSString *_host;
   BOOL _isObserving;
+  RCTPromiseResolveBlock _resolve;
 }
 
 RCT_EXPORT_MODULE()
@@ -49,13 +51,31 @@ @implementation RCTNetInfo
 static void RCTReachabilityCallback(__unused SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void *info)
 {
   RCTNetInfo *self = (__bridge id)info;
-  if ([self setReachabilityStatus:flags] && self->_isObserving) {
+  BOOL didSetReachabilityFlags = [self setReachabilityStatus:flags];
+  if (self->_firstTimeReachability && self->_resolve) {
+    SCNetworkReachabilityUnscheduleFromRunLoop(self->_firstTimeReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+    CFRelease(self->_firstTimeReachability);
+    self->_resolve(@{@"connectionType": self->_connectionType ?: RCTConnectionTypeUnknown,
+                     @"effectiveConnectionType": self->_effectiveConnectionType ?: RCTEffectiveConnectionTypeUnknown,
+                     @"network_info": self->_statusDeprecated ?: RCTReachabilityStateUnknown});
+    self->_firstTimeReachability = nil;
+    self->_resolve = nil;
+  }
+
+  if (didSetReachabilityFlags && self->_isObserving) {
     [self sendEventWithName:@"networkStatusDidChange" body:@{@"connectionType": self->_connectionType,
                                                              @"effectiveConnectionType": self->_effectiveConnectionType,
                                                              @"network_info": self->_statusDeprecated}];
   }
 }
 
+// We need RCTReachabilityCallback's and module methods to be called on the same thread so that we can have
+// guarantees about when we mess with the reachability callbacks.
+- (dispatch_queue_t)methodQueue
+{
+  return dispatch_get_main_queue();
+}
+
 #pragma mark - Lifecycle
 
 - (instancetype)initWithHost:(NSString *)host
@@ -92,6 +112,16 @@ - (void)stopObserving
   }
 }
 
+- (void)dealloc
+{
+  if (_firstTimeReachability) {
+    SCNetworkReachabilityUnscheduleFromRunLoop(self->_firstTimeReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+    CFRelease(self->_firstTimeReachability);
+    _firstTimeReachability = nil;
+    _resolve = nil;
+  }
+}
+
 - (SCNetworkReachabilityRef)getReachabilityRef
 {
   SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, _host.UTF8String ?: "apple.com");
@@ -163,12 +193,14 @@ - (BOOL)setReachabilityStatus:(SCNetworkReachabilityFlags)flags
 RCT_EXPORT_METHOD(getCurrentConnectivity:(RCTPromiseResolveBlock)resolve
                   reject:(__unused RCTPromiseRejectBlock)reject)
 {
-  SCNetworkReachabilityRef reachability = [self getReachabilityRef];
-  SCNetworkReachabilityUnscheduleFromRunLoop(reachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
-  CFRelease(reachability);
-  resolve(@{@"connectionType": _connectionType ?: RCTConnectionTypeUnknown,
-            @"effectiveConnectionType": _effectiveConnectionType ?: RCTEffectiveConnectionTypeUnknown,
-            @"network_info": _statusDeprecated ?: RCTReachabilityStateUnknown});
+  if (_firstTimeReachability) {
+    SCNetworkReachabilityUnscheduleFromRunLoop(self->_firstTimeReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+    CFRelease(self->_firstTimeReachability);
+    _firstTimeReachability = nil;
+    _resolve = nil;
+  }
+  _firstTimeReachability = [self getReachabilityRef];
+  _resolve = resolve;
 }
 
 @end
diff --git a/Libraries/Network/RCTNetworkTask.h b/Libraries/Network/RCTNetworkTask.h
index 5d54adaf4ffdfd..430d5d01edf66c 100644
--- a/Libraries/Network/RCTNetworkTask.h
+++ b/Libraries/Network/RCTNetworkTask.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetworkTask.m b/Libraries/Network/RCTNetworkTask.m
index e13b3f6328b0e6..65be2871cc7448 100644
--- a/Libraries/Network/RCTNetworkTask.m
+++ b/Libraries/Network/RCTNetworkTask.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetworking.android.js b/Libraries/Network/RCTNetworking.android.js
index 85db7ed6f46550..f58e00d5571fb9 100644
--- a/Libraries/Network/RCTNetworking.android.js
+++ b/Libraries/Network/RCTNetworking.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetworking.h b/Libraries/Network/RCTNetworking.h
index 463dc8f988a107..1783d3af4a6d92 100644
--- a/Libraries/Network/RCTNetworking.h
+++ b/Libraries/Network/RCTNetworking.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetworking.js b/Libraries/Network/RCTNetworking.js
index 49ae245e946fab..301643078104a3 100644
--- a/Libraries/Network/RCTNetworking.js
+++ b/Libraries/Network/RCTNetworking.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/RCTNetworking.mm b/Libraries/Network/RCTNetworking.mm
index 2b4d4dd8975260..e153fbda972901 100644
--- a/Libraries/Network/RCTNetworking.mm
+++ b/Libraries/Network/RCTNetworking.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/XHRInterceptor.js b/Libraries/Network/XHRInterceptor.js
index ced48d39100589..f2ad119397d4b8 100644
--- a/Libraries/Network/XHRInterceptor.js
+++ b/Libraries/Network/XHRInterceptor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/XMLHttpRequest.js b/Libraries/Network/XMLHttpRequest.js
index 273b0714481d07..7267b6d7192738 100644
--- a/Libraries/Network/XMLHttpRequest.js
+++ b/Libraries/Network/XMLHttpRequest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -246,6 +246,8 @@ class XMLHttpRequest extends EventTarget(...XHR_EVENTS) {
       case 'blob':
         if (typeof this._response === 'object' && this._response) {
           this._cachedResponse = BlobManager.createFromOptions(this._response);
+        } else if (this._response === '') {
+          this._cachedResponse = null;
         } else {
           throw new Error(`Invalid response for blob: ${this._response}`);
         }
diff --git a/Libraries/Network/__tests__/FormData-test.js b/Libraries/Network/__tests__/FormData-test.js
index 7831a1220c660f..1727928c84a570 100644
--- a/Libraries/Network/__tests__/FormData-test.js
+++ b/Libraries/Network/__tests__/FormData-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/__tests__/XMLHttpRequest-test.js b/Libraries/Network/__tests__/XMLHttpRequest-test.js
index cfe192a598525a..4f2ee984349813 100644
--- a/Libraries/Network/__tests__/XMLHttpRequest-test.js
+++ b/Libraries/Network/__tests__/XMLHttpRequest-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/convertRequestBody.js b/Libraries/Network/convertRequestBody.js
index 84cc9c569078d2..ef6129bb288074 100644
--- a/Libraries/Network/convertRequestBody.js
+++ b/Libraries/Network/convertRequestBody.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Network/fetch.js b/Libraries/Network/fetch.js
index db029ae09987fb..66687e70de2035 100644
--- a/Libraries/Network/fetch.js
+++ b/Libraries/Network/fetch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Performance/PureComponentDebug.js b/Libraries/Performance/PureComponentDebug.js
index c06dbbb71431b1..1de303bc425300 100644
--- a/Libraries/Performance/PureComponentDebug.js
+++ b/Libraries/Performance/PureComponentDebug.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Performance/QuickPerformanceLogger.js b/Libraries/Performance/QuickPerformanceLogger.js
index abc16ab45fb2a4..2fdafbb8481689 100644
--- a/Libraries/Performance/QuickPerformanceLogger.js
+++ b/Libraries/Performance/QuickPerformanceLogger.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Performance/SamplingProfiler.js b/Libraries/Performance/SamplingProfiler.js
index 1bb87f2a78766b..0c09e1c6caf6bb 100644
--- a/Libraries/Performance/SamplingProfiler.js
+++ b/Libraries/Performance/SamplingProfiler.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Performance/Systrace.js b/Libraries/Performance/Systrace.js
index 19105ad3039719..2edcd224202039 100644
--- a/Libraries/Performance/Systrace.js
+++ b/Libraries/Performance/Systrace.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/PermissionsAndroid/PermissionsAndroid.js b/Libraries/PermissionsAndroid/PermissionsAndroid.js
index 123e6bfdd0919b..5974b294acdbff 100644
--- a/Libraries/PermissionsAndroid/PermissionsAndroid.js
+++ b/Libraries/PermissionsAndroid/PermissionsAndroid.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Promise.js b/Libraries/Promise.js
index 2581435a619445..0a277621546f81 100644
--- a/Libraries/Promise.js
+++ b/Libraries/Promise.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/PushNotificationIOS/PushNotificationIOS.js b/Libraries/PushNotificationIOS/PushNotificationIOS.js
index 841f68b05ea718..d1d1d7df095173 100644
--- a/Libraries/PushNotificationIOS/PushNotificationIOS.js
+++ b/Libraries/PushNotificationIOS/PushNotificationIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/PushNotificationIOS/RCTPushNotificationManager.h b/Libraries/PushNotificationIOS/RCTPushNotificationManager.h
index 712eabbf5c767b..5af7626d67cfc6 100644
--- a/Libraries/PushNotificationIOS/RCTPushNotificationManager.h
+++ b/Libraries/PushNotificationIOS/RCTPushNotificationManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/PushNotificationIOS/RCTPushNotificationManager.m b/Libraries/PushNotificationIOS/RCTPushNotificationManager.m
index a8af9c0fd64f20..53b10c430a7bbc 100644
--- a/Libraries/PushNotificationIOS/RCTPushNotificationManager.m
+++ b/Libraries/PushNotificationIOS/RCTPushNotificationManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
index 98e7f9ce2c1c34..661f5622ba2d80 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.m b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.m
index 9c500274942718..ae83a48d3df6ef 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.m
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestCase.m
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
index 0ed77840dade88..919ff051960326 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.m b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.m
index 13eb7e7e0bf62c..6e17c42d1a00c5 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.m
+++ b/Libraries/RCTTest/FBSnapshotTestCase/FBSnapshotTestController.m
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.h b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.h
index 308fc675cecbdb..8bcb037f1a7cf0 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.h
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 //
 //  Created by Gabriel Handford on 3/1/09.
 //  Copyright 2009-2013. All rights reserved.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.m b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.m
index 008ee2470fcffe..659e31a41db7ac 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.m
+++ b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Compare.m
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 //
 //  Created by Gabriel Handford on 3/1/09.
 //  Copyright 2009-2013. All rights reserved.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.h b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.h
index 0d7a547aac39c7..469777965d090a 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.h
+++ b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.h
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 //
 //  Created by Gabriel Handford on 3/1/09.
 //  Copyright 2009-2013. All rights reserved.
diff --git a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.m b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.m
index 44ecb59ee87b41..5e9f06c028f889 100644
--- a/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.m
+++ b/Libraries/RCTTest/FBSnapshotTestCase/UIImage+Diff.m
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 //
 //  Created by Gabriel Handford on 3/1/09.
 //  Copyright 2009-2013. All rights reserved.
diff --git a/Libraries/RCTTest/RCTSnapshotManager.h b/Libraries/RCTTest/RCTSnapshotManager.h
index de7ecc818c49b6..8b03ca4cbd201c 100644
--- a/Libraries/RCTTest/RCTSnapshotManager.h
+++ b/Libraries/RCTTest/RCTSnapshotManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/RCTSnapshotManager.m b/Libraries/RCTTest/RCTSnapshotManager.m
index 5f1d97337cbfa2..4536bea7d1b579 100644
--- a/Libraries/RCTTest/RCTSnapshotManager.m
+++ b/Libraries/RCTTest/RCTSnapshotManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/RCTTestModule.h b/Libraries/RCTTest/RCTTestModule.h
index 7f88ba7014a4a7..ad010429021e2e 100644
--- a/Libraries/RCTTest/RCTTestModule.h
+++ b/Libraries/RCTTest/RCTTestModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/RCTTestModule.m b/Libraries/RCTTest/RCTTestModule.m
index 4f44c4c40c9e68..e4c5c1a9881ecf 100644
--- a/Libraries/RCTTest/RCTTestModule.m
+++ b/Libraries/RCTTest/RCTTestModule.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/RCTTestRunner.h b/Libraries/RCTTest/RCTTestRunner.h
index 39e032650e1477..3f7749086c8037 100644
--- a/Libraries/RCTTest/RCTTestRunner.h
+++ b/Libraries/RCTTest/RCTTestRunner.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -34,7 +34,12 @@
 [[RCTTestRunner alloc] initWithApp:(app__) \
                 referenceDirectory:@FB_REFERENCE_IMAGE_DIR \
                     moduleProvider:(moduleProvider__) \
-                    scriptURL: scriptURL__]
+                         scriptURL: scriptURL__]
+
+#define RCTInitRunnerForAppWithDelegate(app__, bridgeDelegate__) \
+[[RCTTestRunner alloc] initWithApp:(app__) \
+                referenceDirectory:@FB_REFERENCE_IMAGE_DIR \
+                    bridgeDelegate:(bridgeDelegate__)]
 
 @protocol RCTBridgeModule;
 @class RCTBridge;
@@ -64,11 +69,25 @@
  * @param app The path to the app bundle without suffixes, e.g. IntegrationTests/IntegrationTestsApp
  * @param referenceDirectory The path for snapshot references images.
  * @param block A block that returns an array of extra modules to be used by the test runner.
+ * @param scriptURL URL to the JS bundle to use.
+ * @param bridgeDelegate Custom delegate for bridge activities.
  */
 - (instancetype)initWithApp:(NSString *)app
          referenceDirectory:(NSString *)referenceDirectory
              moduleProvider:(RCTBridgeModuleListProvider)block
-                  scriptURL:(NSURL *)scriptURL NS_DESIGNATED_INITIALIZER;
+                  scriptURL:(NSURL *)scriptURL
+             bridgeDelegate:(id<RCTBridgeDelegate>)bridgeDelegate NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithApp:(NSString *)app
+         referenceDirectory:(NSString *)referenceDirectory
+             moduleProvider:(RCTBridgeModuleListProvider)block
+                  scriptURL:(NSURL *)scriptURL;
+
+- (instancetype)initWithApp:(NSString *)app
+         referenceDirectory:(NSString *)referenceDirectory
+             bridgeDelegate:(id<RCTBridgeDelegate>)bridgeDelegate;
+
+- (NSURL *)defaultScriptURL;
 
 /**
  * Simplest runTest function simply mounts the specified JS module with no
diff --git a/Libraries/RCTTest/RCTTestRunner.m b/Libraries/RCTTest/RCTTestRunner.m
index bd790467034896..d357295bd80a5b 100644
--- a/Libraries/RCTTest/RCTTestRunner.m
+++ b/Libraries/RCTTest/RCTTestRunner.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,12 +26,37 @@ @implementation RCTTestRunner
   FBSnapshotTestController *_testController;
   RCTBridgeModuleListProvider _moduleProvider;
   NSString *_appPath;
+  __weak id<RCTBridgeDelegate> _bridgeDelegate;
 }
 
 - (instancetype)initWithApp:(NSString *)app
          referenceDirectory:(NSString *)referenceDirectory
              moduleProvider:(RCTBridgeModuleListProvider)block
                   scriptURL:(NSURL *)scriptURL
+{
+  return [self initWithApp:app
+        referenceDirectory:referenceDirectory
+            moduleProvider:block
+                 scriptURL:scriptURL
+            bridgeDelegate:nil];
+}
+
+- (instancetype)initWithApp:(NSString *)app
+         referenceDirectory:(NSString *)referenceDirectory
+             bridgeDelegate:(id<RCTBridgeDelegate>)bridgeDelegate
+{
+  return [self initWithApp:app
+        referenceDirectory:referenceDirectory
+            moduleProvider:nil
+                 scriptURL:nil
+            bridgeDelegate:bridgeDelegate];
+}
+
+- (instancetype)initWithApp:(NSString *)app
+         referenceDirectory:(NSString *)referenceDirectory
+             moduleProvider:(RCTBridgeModuleListProvider)block
+                  scriptURL:(NSURL *)scriptURL
+             bridgeDelegate:(id<RCTBridgeDelegate>)bridgeDelegate
 {
   RCTAssertParam(app);
   RCTAssertParam(referenceDirectory);
@@ -47,10 +72,11 @@ - (instancetype)initWithApp:(NSString *)app
     _testController.referenceImagesDirectory = referenceDirectory;
     _moduleProvider = [block copy];
     _appPath = app;
+    _bridgeDelegate = bridgeDelegate;
 
     if (scriptURL != nil) {
       _scriptURL = scriptURL;
-    } else {
+    } else if (!_bridgeDelegate) {
       [self updateScript];
     }
   }
@@ -59,13 +85,18 @@ - (instancetype)initWithApp:(NSString *)app
 
 RCT_NOT_IMPLEMENTED(- (instancetype)init)
 
-- (void)updateScript
+- (NSURL *)defaultScriptURL
 {
   if (getenv("CI_USE_PACKAGER") || _useBundler) {
-    _scriptURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@.bundle?platform=%@&dev=true", _appPath, kRCTPlatformName]]; // TODO(macOS ISS#2323203)
+    return [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@.bundle?platform=%@&dev=true", _appPath, kRCTPlatformName]]; // TODO(macOS ISS#2323203)
   } else {
-    _scriptURL = [[NSBundle bundleForClass:[RCTBridge class]] URLForResource:@"main" withExtension:@"jsbundle"];
+    return [[NSBundle bundleForClass:[RCTBridge class]] URLForResource:@"main" withExtension:@"jsbundle"];
   }
+}
+
+- (void)updateScript
+{
+  _scriptURL = [self defaultScriptURL];
   RCTAssert(_scriptURL != nil, @"No scriptURL set");
 }
 
@@ -130,9 +161,14 @@ - (void)runTest:(SEL)test module:(NSString *)moduleName
   });
 
   @autoreleasepool {
-    RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:_scriptURL
-                                              moduleProvider:_moduleProvider
-                                               launchOptions:nil];
+    RCTBridge *bridge;
+    if (_bridgeDelegate) {
+      bridge = [[RCTBridge alloc] initWithDelegate:_bridgeDelegate launchOptions:nil];
+    } else {
+      bridge= [[RCTBridge alloc] initWithBundleURL:_scriptURL
+                                    moduleProvider:_moduleProvider
+                                     launchOptions:nil];
+    }
     [bridge.devSettings setIsDebuggingRemotely:_useJSDebugger];
     batchedBridge = [bridge batchedBridge];
 
diff --git a/Libraries/RCTTest/SnapshotViewIOS.android.js b/Libraries/RCTTest/SnapshotViewIOS.android.js
index 260d559929796f..7a00b6636cf664 100644
--- a/Libraries/RCTTest/SnapshotViewIOS.android.js
+++ b/Libraries/RCTTest/SnapshotViewIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/RCTTest/SnapshotViewIOS.ios.js b/Libraries/RCTTest/SnapshotViewIOS.ios.js
index 9fbc70302cf460..ef2bbdb687017a 100644
--- a/Libraries/RCTTest/SnapshotViewIOS.ios.js
+++ b/Libraries/RCTTest/SnapshotViewIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,37 +11,38 @@
 'use strict';
 
 const React = require('React');
-const PropTypes = require('prop-types');
 const StyleSheet = require('StyleSheet');
-const {TestModule} = require('NativeModules');
 const UIManager = require('UIManager');
 const View = require('View');
 
-const ViewPropTypes = require('ViewPropTypes');
-
 const requireNativeComponent = require('requireNativeComponent');
 
+const {TestModule} = require('NativeModules');
+
+import type {SyntheticEvent} from 'CoreEventTypes';
+import type {ViewProps} from 'ViewPropTypes';
+
 // Verify that RCTSnapshot is part of the UIManager since it is only loaded
 // if you have linked against RCTTest like in tests, otherwise we will have
 // a warning printed out
-const RCTSnapshot = UIManager.RCTSnapshot
+const RCTSnapshot = UIManager.getViewManagerConfig('RCTSnapshot')
   ? requireNativeComponent('RCTSnapshot')
   : View;
 
-class SnapshotViewIOS extends React.Component<{
-  onSnapshotReady?: Function,
-  testIdentifier?: string,
-}> {
-  // $FlowFixMe(>=0.41.0)
-  static propTypes = {
-    ...ViewPropTypes,
-    // A callback when the Snapshot view is ready to be compared
-    onSnapshotReady: PropTypes.func,
-    // A name to identify the individual instance to the SnapshotView
-    testIdentifier: PropTypes.string,
-  };
+type SnapshotReadyEvent = SyntheticEvent<
+  $ReadOnly<{
+    testIdentifier: string,
+  }>,
+>;
+
+type Props = $ReadOnly<{|
+  ...ViewProps,
+  onSnapshotReady?: ?(event: SnapshotReadyEvent) => mixed,
+  testIdentifier?: ?string,
+|}>;
 
-  onDefaultAction = (event: Object) => {
+class SnapshotViewIOS extends React.Component<Props> {
+  onDefaultAction = (event: SnapshotReadyEvent) => {
     TestModule.verifySnapshot(TestModule.markTestPassed);
   };
 
diff --git a/Libraries/ReactNative/AppContainer.js b/Libraries/ReactNative/AppContainer.js
index 58ffb095fe5360..32c55ff7e8e85a 100644
--- a/Libraries/ReactNative/AppContainer.js
+++ b/Libraries/ReactNative/AppContainer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/AppRegistry.js b/Libraries/ReactNative/AppRegistry.js
index a2fdf91e632d45..1678f18368b0ee 100644
--- a/Libraries/ReactNative/AppRegistry.js
+++ b/Libraries/ReactNative/AppRegistry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/FabricUIManager.js b/Libraries/ReactNative/FabricUIManager.js
index 20c855b3deafe1..b467ed23c846c6 100644
--- a/Libraries/ReactNative/FabricUIManager.js
+++ b/Libraries/ReactNative/FabricUIManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/I18nManager.js b/Libraries/ReactNative/I18nManager.js
index 7611891959386d..40684614429b20 100644
--- a/Libraries/ReactNative/I18nManager.js
+++ b/Libraries/ReactNative/I18nManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/ReactFabricIndicator.js b/Libraries/ReactNative/ReactFabricIndicator.js
index 23b95f8c161a9c..2c8d4cb6f6ac04 100644
--- a/Libraries/ReactNative/ReactFabricIndicator.js
+++ b/Libraries/ReactNative/ReactFabricIndicator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/ReactFabricInternals.js b/Libraries/ReactNative/ReactFabricInternals.js
index 47855a8b7c0c29..e78e5dbeecbf10 100644
--- a/Libraries/ReactNative/ReactFabricInternals.js
+++ b/Libraries/ReactNative/ReactFabricInternals.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/UIManager.js b/Libraries/ReactNative/UIManager.js
index fdae48d4a725f8..0b408b834c3b84 100644
--- a/Libraries/ReactNative/UIManager.js
+++ b/Libraries/ReactNative/UIManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,11 +11,13 @@
 
 const NativeModules = require('NativeModules');
 const Platform = require('Platform');
+const UIManagerProperties = require('UIManagerProperties');
 
 const defineLazyObjectProperty = require('defineLazyObjectProperty');
 const invariant = require('fbjs/lib/invariant');
 
 const {UIManager} = NativeModules;
+const viewManagerConfigs = {};
 
 invariant(
   UIManager,
@@ -35,6 +37,81 @@ UIManager.takeSnapshot = function() {
       'Use ReactNative.takeSnapshot instead.',
   );
 };
+const triedLoadingConfig = new Set();
+UIManager.getViewManagerConfig = function(viewManagerName: string) {
+  if (
+    viewManagerConfigs[viewManagerName] === undefined &&
+    UIManager.getConstantsForViewManager
+  ) {
+    try {
+      viewManagerConfigs[
+        viewManagerName
+      ] = UIManager.getConstantsForViewManager(viewManagerName);
+    } catch (e) {
+      viewManagerConfigs[viewManagerName] = null;
+    }
+  }
+
+  const config = viewManagerConfigs[viewManagerName];
+  if (config) {
+    return config;
+  }
+
+  // If we're in the Chrome Debugger, let's not even try calling the sync
+  // method.
+  if (__DEV__) {
+    if (!global.nativeCallSyncHook) {
+      return config;
+    }
+  }
+
+  if (UIManager.lazilyLoadView && !triedLoadingConfig.has(viewManagerName)) {
+    const result = UIManager.lazilyLoadView(viewManagerName);
+    triedLoadingConfig.add(viewManagerName);
+    if (result.viewConfig) {
+      UIManager[viewManagerName] = result.viewConfig;
+      lazifyViewManagerConfig(viewManagerName);
+    }
+  }
+
+  return viewManagerConfigs[viewManagerName];
+};
+
+function lazifyViewManagerConfig(viewName) {
+  const viewConfig = UIManager[viewName];
+  if (viewConfig.Manager) {
+    viewManagerConfigs[viewName] = viewConfig;
+    defineLazyObjectProperty(viewConfig, 'Constants', {
+      get: () => {
+        const viewManager = NativeModules[viewConfig.Manager];
+        const constants = {};
+        viewManager &&
+          Object.keys(viewManager).forEach(key => {
+            const value = viewManager[key];
+            if (typeof value !== 'function') {
+              constants[key] = value;
+            }
+          });
+        return constants;
+      },
+    });
+    defineLazyObjectProperty(viewConfig, 'Commands', {
+      get: () => {
+        const viewManager = NativeModules[viewConfig.Manager];
+        const commands = {};
+        let index = 0;
+        viewManager &&
+          Object.keys(viewManager).forEach(key => {
+            const value = viewManager[key];
+            if (typeof value === 'function') {
+              commands[key] = index++;
+            }
+          });
+        return commands;
+      },
+    });
+  }
+}
 
 /**
  * Copies the ViewManager constants and commands into UIManager. This is
@@ -46,38 +123,7 @@ if (
   Platform.OS === 'macos' /* TODO(macOS ISS#2323203) */
 ) {
   Object.keys(UIManager).forEach(viewName => {
-    const viewConfig = UIManager[viewName];
-    if (viewConfig.Manager) {
-      defineLazyObjectProperty(viewConfig, 'Constants', {
-        get: () => {
-          const viewManager = NativeModules[viewConfig.Manager];
-          const constants = {};
-          viewManager &&
-            Object.keys(viewManager).forEach(key => {
-              const value = viewManager[key];
-              if (typeof value !== 'function') {
-                constants[key] = value;
-              }
-            });
-          return constants;
-        },
-      });
-      defineLazyObjectProperty(viewConfig, 'Commands', {
-        get: () => {
-          const viewManager = NativeModules[viewConfig.Manager];
-          const commands = {};
-          let index = 0;
-          viewManager &&
-            Object.keys(viewManager).forEach(key => {
-              const value = viewManager[key];
-              if (typeof value === 'function') {
-                commands[key] = index++;
-              }
-            });
-          return commands;
-        },
-      });
-    }
+    lazifyViewManagerConfig(viewName);
   });
 } else if (UIManager.ViewManagerNames) {
   // We want to add all the view managers to the UIManager.
@@ -104,7 +150,28 @@ if (
   // we also tell Prepack that it has only partial knowledge of the UIManager,
   // so that any accesses to unknown properties along the global code will fail
   // when Prepack encounters them.
-  if (global.__makePartial) global.__makePartial(UIManager);
+  if (global.__makePartial) {
+    global.__makePartial(UIManager);
+  }
+}
+
+if (__DEV__) {
+  Object.keys(UIManager).forEach(viewManagerName => {
+    if (!UIManagerProperties.includes(viewManagerName)) {
+      if (!viewManagerConfigs[viewManagerName]) {
+        viewManagerConfigs[viewManagerName] = UIManager[viewManagerName];
+      }
+      defineLazyObjectProperty(UIManager, viewManagerName, {
+        get: () => {
+          console.warn(
+            `Accessing view manager configs directly off UIManager via UIManager['${viewManagerName}'] ` +
+              `is no longer supported. Use UIManager.getViewManagerConfig('${viewManagerName}') instead.`,
+          );
+          return UIManager.getViewManagerConfig(viewManagerName);
+        },
+      });
+    }
+  });
 }
 
 module.exports = UIManager;
diff --git a/Libraries/ReactNative/UIManagerProperties.js b/Libraries/ReactNative/UIManagerProperties.js
new file mode 100644
index 00000000000000..ca8e59de686a08
--- /dev/null
+++ b/Libraries/ReactNative/UIManagerProperties.js
@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * The list of non-ViewManager related UIManager properties.
+ *
+ * In an effort to improve startup performance by lazily loading view managers,
+ * the interface to access view managers will change from
+ * UIManager['viewManagerName'] to UIManager.getViewManagerConfig('viewManagerName').
+ * By using a function call instead of a property access, the UIManager will
+ * be able to initialize and load the required view manager from native
+ * synchronously. All of React Native's core components have been updated to
+ * use getViewManagerConfig(). For the next few releases, any usage of
+ * UIManager['viewManagerName'] will result in a warning. Because React Native
+ * does not support Proxy objects, a view manager access is implied if any of
+ * UIManager's properties that are not one of the properties below is being
+ * accessed. Once UIManager property accesses for view managers has been fully
+ * deprecated, this file will also be removed.
+ */
+module.exports = [
+  'clearJSResponder',
+  'configureNextLayoutAnimation',
+  'createView',
+  'dismissPopupMenu',
+  'dispatchViewManagerCommand',
+  'findSubviewIn',
+  'getConstantsForViewManager',
+  'getDefaultEventTypes',
+  'manageChildren',
+  'measure',
+  'measureInWindow',
+  'measureLayout',
+  'measureLayoutRelativeToParent',
+  'playTouchSound',
+  'removeRootView',
+  'removeSubviewsFromContainerWithID',
+  'replaceExistingNonRootView',
+  'sendAccessibilityEvent',
+  'setChildren',
+  'setJSResponder',
+  'setLayoutAnimationEnabledExperimental',
+  'showPopupMenu',
+  'updateView',
+  'viewIsDescendantOf',
+  'PopupMenu',
+  'LazyViewManagersEnabled',
+  'ViewManagerNames',
+  'StyleConstants',
+  'AccessibilityEventTypes',
+  'UIView',
+  '__takeSnapshot',
+  'takeSnapshot',
+  'getViewManagerConfig',
+  'blur',
+  'focus',
+  'genericBubblingEventTypes',
+  'genericDirectEventTypes',
+  'lazilyLoadView',
+];
diff --git a/Libraries/ReactNative/UIManagerStatTracker.js b/Libraries/ReactNative/UIManagerStatTracker.js
index 8c26e8484e435f..0543afdbdaef45 100644
--- a/Libraries/ReactNative/UIManagerStatTracker.js
+++ b/Libraries/ReactNative/UIManagerStatTracker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,12 +33,18 @@ const UIManagerStatTracker = {
     const createViewOrig = UIManager.createView;
     UIManager.createView = function(tag, className, rootTag, props) {
       incStat('createView', 1);
+      /* $FlowFixMe(>=0.86.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.86 was deployed. To see the error, delete
+       * this comment and run Flow. */
       incStat('setProp', Object.keys(props || []).length);
       createViewOrig(tag, className, rootTag, props);
     };
     const updateViewOrig = UIManager.updateView;
     UIManager.updateView = function(tag, className, props) {
       incStat('updateView', 1);
+      /* $FlowFixMe(>=0.86.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.86 was deployed. To see the error, delete
+       * this comment and run Flow. */
       incStat('setProp', Object.keys(props || []).length);
       updateViewOrig(tag, className, props);
     };
@@ -52,7 +58,13 @@ const UIManagerStatTracker = {
       remove,
     ) {
       incStat('manageChildren', 1);
+      /* $FlowFixMe(>=0.86.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.86 was deployed. To see the error, delete
+       * this comment and run Flow. */
       incStat('move', Object.keys(moveFrom || []).length);
+      /* $FlowFixMe(>=0.86.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.86 was deployed. To see the error, delete
+       * this comment and run Flow. */
       incStat('remove', Object.keys(remove || []).length);
       manageChildrenOrig(tag, moveFrom, moveTo, addTags, addIndices, remove);
     };
diff --git a/Libraries/ReactNative/getNativeComponentAttributes.js b/Libraries/ReactNative/getNativeComponentAttributes.js
index 6d77be8d728c23..92ae45c999762d 100644
--- a/Libraries/ReactNative/getNativeComponentAttributes.js
+++ b/Libraries/ReactNative/getNativeComponentAttributes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,7 +24,7 @@ const warning = require('fbjs/lib/warning');
 import type {SemanticOrDynamicColorType} from 'normalizeColor'; // ]TODO(macOS ISS#2323203)
 
 function getNativeComponentAttributes(uiViewClassName: string) {
-  const viewConfig = UIManager[uiViewClassName];
+  const viewConfig = UIManager.getViewManagerConfig(uiViewClassName);
 
   invariant(
     viewConfig != null && viewConfig.NativeProps != null,
@@ -37,7 +37,7 @@ function getNativeComponentAttributes(uiViewClassName: string) {
   let {baseModuleName, bubblingEventTypes, directEventTypes} = viewConfig;
   let nativeProps = viewConfig.NativeProps;
   while (baseModuleName) {
-    const baseModule = UIManager[baseModuleName];
+    const baseModule = UIManager.getViewManagerConfig(baseModuleName);
     if (!baseModule) {
       warning(false, 'Base module "%s" does not exist', baseModuleName);
       baseModuleName = null;
@@ -97,7 +97,7 @@ function attachDefaultEventTypes(viewConfig: any) {
   // This is supported on UIManager platforms (ex: Android),
   // as lazy view managers are not implemented for all platforms.
   // See [UIManager] for details on constants and implementations.
-  if (UIManager.ViewManagerNames) {
+  if (UIManager.ViewManagerNames || UIManager.LazyViewManagersEnabled) {
     // Lazy view managers enabled.
     viewConfig = merge(viewConfig, UIManager.getDefaultEventTypes());
   } else {
diff --git a/Libraries/ReactNative/queryLayoutByID.js b/Libraries/ReactNative/queryLayoutByID.js
index 6703612959a968..62fe0b3f0e28ed 100644
--- a/Libraries/ReactNative/queryLayoutByID.js
+++ b/Libraries/ReactNative/queryLayoutByID.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/renderApplication.js b/Libraries/ReactNative/renderApplication.js
index 193262fc677c16..33749fca1792bd 100644
--- a/Libraries/ReactNative/renderApplication.js
+++ b/Libraries/ReactNative/renderApplication.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -49,8 +49,8 @@ function renderApplication<Props: Object>(
     RootComponent.prototype.unstable_isAsyncReactComponent === true
   ) {
     // $FlowFixMe This is not yet part of the official public API
-    const AsyncMode = React.unstable_AsyncMode;
-    renderable = <AsyncMode>{renderable}</AsyncMode>;
+    const ConcurrentMode = React.unstable_ConcurrentMode;
+    renderable = <ConcurrentMode>{renderable}</ConcurrentMode>;
   }
 
   if (fabric) {
diff --git a/Libraries/ReactNative/requireNativeComponent.js b/Libraries/ReactNative/requireNativeComponent.js
index 3a4ad7f4e95f7d..4cc24d60595150 100644
--- a/Libraries/ReactNative/requireNativeComponent.js
+++ b/Libraries/ReactNative/requireNativeComponent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/ReactNative/takeSnapshot.js b/Libraries/ReactNative/takeSnapshot.js
index 5c9e248e5e4af7..6227a18e79a702 100644
--- a/Libraries/ReactNative/takeSnapshot.js
+++ b/Libraries/ReactNative/takeSnapshot.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Renderer/REVISION b/Libraries/Renderer/REVISION
index 49f9919db8157e..36936c8e996cf2 100644
--- a/Libraries/Renderer/REVISION
+++ b/Libraries/Renderer/REVISION
@@ -1 +1 @@
-ade5e692883345783e32e87875bbb744fb415c9c
+6bf5e859860938b8cb7153ee928c01ad45656969
diff --git a/Libraries/Renderer/oss/ReactFabric-dev.js b/Libraries/Renderer/oss/ReactFabric-dev.js
index 410669cb533e03..5d7d6f4d19dade 100644
--- a/Libraries/Renderer/oss/ReactFabric-dev.js
+++ b/Libraries/Renderer/oss/ReactFabric-dev.js
@@ -26,7 +26,8 @@ var deepFreezeAndThrowOnMutationInDev = require("deepFreezeAndThrowOnMutationInD
 var TextInputState = require("TextInputState");
 var FabricUIManager = require("FabricUIManager");
 var checkPropTypes = require("prop-types/checkPropTypes");
-var tracking = require("schedule/tracking");
+var tracing = require("scheduler/tracing");
+var scheduler = require("scheduler");
 var ExceptionsManager = require("ExceptionsManager");
 
 /**
@@ -165,6 +166,13 @@ var invokeGuardedCallbackImpl = function(
       // browsers that support it.
       var windowEvent = window.event;
 
+      // Keeps track of the descriptor of window.event to restore it after event
+      // dispatching: https://github.com/facebook/react/issues/13688
+      var windowEventDescriptor = Object.getOwnPropertyDescriptor(
+        window,
+        "event"
+      );
+
       // Create an event handler for our fake event. We will synchronously
       // dispatch our fake event using `dispatchEvent`. Inside the handler, we
       // call the user-provided callback.
@@ -239,6 +247,10 @@ var invokeGuardedCallbackImpl = function(
       evt.initEvent(evtType, false, false);
       fakeNode.dispatchEvent(evt);
 
+      if (windowEventDescriptor) {
+        Object.defineProperty(window, "event", windowEventDescriptor);
+      }
+
       if (didError) {
         if (!didSetError) {
           // The callback errored, but the error event never fired.
@@ -606,19 +618,24 @@ var warningWithoutStack = function() {};
           "message argument"
       );
     }
+    if (args.length > 8) {
+      // Check before the condition to catch violations early.
+      throw new Error(
+        "warningWithoutStack() currently supports at most 8 arguments."
+      );
+    }
     if (condition) {
       return;
     }
     if (typeof console !== "undefined") {
-      var _console;
-
-      var stringArgs = args.map(function(item) {
+      var argsWithFormat = args.map(function(item) {
         return "" + item;
       });
-      (_console = console).error.apply(
-        _console,
-        ["Warning: " + format].concat(stringArgs)
-      );
+      argsWithFormat.unshift("Warning: " + format);
+
+      // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      Function.prototype.apply.call(console.error, console, argsWithFormat);
     }
     try {
       // --- Welcome to debugging React ---
@@ -689,11 +706,10 @@ var validateEventDispatches = void 0;
 /**
  * Dispatch the event to the listener.
  * @param {SyntheticEvent} event SyntheticEvent to handle
- * @param {boolean} simulated If the event is simulated (changes exn behavior)
  * @param {function} listener Application-level callback
  * @param {*} inst Internal component instance
  */
-function executeDispatch(event, simulated, listener, inst) {
+function executeDispatch(event, listener, inst) {
   var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
   invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
@@ -703,7 +719,7 @@ function executeDispatch(event, simulated, listener, inst) {
 /**
  * Standard/simple iteration through an event's collected dispatches.
  */
-function executeDispatchesInOrder(event, simulated) {
+function executeDispatchesInOrder(event) {
   var dispatchListeners = event._dispatchListeners;
   var dispatchInstances = event._dispatchInstances;
   {
@@ -715,15 +731,10 @@ function executeDispatchesInOrder(event, simulated) {
         break;
       }
       // Listeners and Instances are two parallel arrays that are always in sync.
-      executeDispatch(
-        event,
-        simulated,
-        dispatchListeners[i],
-        dispatchInstances[i]
-      );
+      executeDispatch(event, dispatchListeners[i], dispatchInstances[i]);
     }
   } else if (dispatchListeners) {
-    executeDispatch(event, simulated, dispatchListeners, dispatchInstances);
+    executeDispatch(event, dispatchListeners, dispatchInstances);
   }
   event._dispatchListeners = null;
   event._dispatchInstances = null;
@@ -876,23 +887,19 @@ var eventQueue = null;
  * Dispatches an event and releases it back into the pool, unless persistent.
  *
  * @param {?object} event Synthetic event to be dispatched.
- * @param {boolean} simulated If the event is simulated (changes exn behavior)
  * @private
  */
-var executeDispatchesAndRelease = function(event, simulated) {
+var executeDispatchesAndRelease = function(event) {
   if (event) {
-    executeDispatchesInOrder(event, simulated);
+    executeDispatchesInOrder(event);
 
     if (!event.isPersistent()) {
       event.constructor.release(event);
     }
   }
 };
-var executeDispatchesAndReleaseSimulated = function(e) {
-  return executeDispatchesAndRelease(e, true);
-};
 var executeDispatchesAndReleaseTopLevel = function(e) {
-  return executeDispatchesAndRelease(e, false);
+  return executeDispatchesAndRelease(e);
 };
 
 function isInteractive(tag) {
@@ -1026,7 +1033,7 @@ function extractEvents(
   return events;
 }
 
-function runEventsInBatch(events, simulated) {
+function runEventsInBatch(events) {
   if (events !== null) {
     eventQueue = accumulateInto(eventQueue, events);
   }
@@ -1040,17 +1047,7 @@ function runEventsInBatch(events, simulated) {
     return;
   }
 
-  if (simulated) {
-    forEachAccumulated(
-      processingEventQueue,
-      executeDispatchesAndReleaseSimulated
-    );
-  } else {
-    forEachAccumulated(
-      processingEventQueue,
-      executeDispatchesAndReleaseTopLevel
-    );
-  }
+  forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);
   invariant(
     !eventQueue,
     "processEventQueue(): Additional events were enqueued while processing " +
@@ -1072,26 +1069,27 @@ function runExtractedEventsInBatch(
     nativeEvent,
     nativeEventTarget
   );
-  runEventsInBatch(events, false);
-}
-
-var FunctionalComponent = 0;
-var FunctionalComponentLazy = 1;
-var ClassComponent = 2;
-var ClassComponentLazy = 3;
-var IndeterminateComponent = 4; // Before we know whether it is functional or class
-var HostRoot = 5; // Root of a host tree. Could be nested inside another node.
-var HostPortal = 6; // A subtree. Could be an entry point to a different renderer.
-var HostComponent = 7;
-var HostText = 8;
-var Fragment = 9;
-var Mode = 10;
-var ContextConsumer = 11;
-var ContextProvider = 12;
-var ForwardRef = 13;
-var ForwardRefLazy = 14;
-var Profiler = 15;
-var PlaceholderComponent = 16;
+  runEventsInBatch(events);
+}
+
+var FunctionComponent = 0;
+var ClassComponent = 1;
+var IndeterminateComponent = 2; // Before we know whether it is function or class
+var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+var HostPortal = 4; // A subtree. Could be an entry point to a different renderer.
+var HostComponent = 5;
+var HostText = 6;
+var Fragment = 7;
+var Mode = 8;
+var ContextConsumer = 9;
+var ContextProvider = 10;
+var ForwardRef = 11;
+var Profiler = 12;
+var SuspenseComponent = 13;
+var MemoComponent = 14;
+var SimpleMemoComponent = 15;
+var LazyComponent = 16;
+var IncompleteClassComponent = 17;
 
 function getParent(inst) {
   do {
@@ -2443,14 +2441,8 @@ var ResponderEventPlugin = {
   }
 };
 
-var customBubblingEventTypes$1 =
-  ReactNativeViewConfigRegistry.customBubblingEventTypes;
-var customDirectEventTypes$1 =
-  ReactNativeViewConfigRegistry.customDirectEventTypes;
-var eventTypes$2 = ReactNativeViewConfigRegistry.eventTypes;
-
 var ReactNativeBridgeEventPlugin = {
-  eventTypes: eventTypes$2,
+  eventTypes: ReactNativeViewConfigRegistry.eventTypes,
 
   /**
    * @see {EventPluginHub.extractEvents}
@@ -2465,8 +2457,10 @@ var ReactNativeBridgeEventPlugin = {
       // Probably a node belonging to another renderer's tree.
       return null;
     }
-    var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType];
-    var directDispatchConfig = customDirectEventTypes$1[topLevelType];
+    var bubbleDispatchConfig =
+      ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType];
+    var directDispatchConfig =
+      ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
     invariant(
       bubbleDispatchConfig || directDispatchConfig,
       'Unsupported top level event type "%s" dispatched',
@@ -2591,13 +2585,16 @@ var REACT_STRICT_MODE_TYPE = hasSymbol
 var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 0xead2;
 var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 0xeacd;
 var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 0xeace;
-var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 0xeacf;
+
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol
+  ? Symbol.for("react.concurrent_mode")
+  : 0xeacf;
 var REACT_FORWARD_REF_TYPE = hasSymbol
   ? Symbol.for("react.forward_ref")
   : 0xead0;
-var REACT_PLACEHOLDER_TYPE = hasSymbol
-  ? Symbol.for("react.placeholder")
-  : 0xead1;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 0xead1;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 0xead4;
 
 var MAYBE_ITERATOR_SYMBOL = typeof Symbol === "function" && Symbol.iterator;
 var FAUX_ITERATOR_SYMBOL = "@@iterator";
@@ -2619,12 +2616,16 @@ var Pending = 0;
 var Resolved = 1;
 var Rejected = 2;
 
-function getResultFromResolvedThenable(thenable) {
-  return thenable._reactResult;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
 }
 
-function refineResolvedThenable(thenable) {
-  return thenable._reactStatus === Resolved ? thenable._reactResult : null;
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || "";
+  return (
+    outerType.displayName ||
+    (functionName !== "" ? wrapperName + "(" + functionName + ")" : wrapperName)
+  );
 }
 
 function getComponentName(type) {
@@ -2648,8 +2649,8 @@ function getComponentName(type) {
     return type;
   }
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -2658,8 +2659,8 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
   if (typeof type === "object") {
     switch (type.$$typeof) {
@@ -2668,17 +2669,15 @@ function getComponentName(type) {
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
-        var renderFn = type.render;
-        var functionName = renderFn.displayName || renderFn.name || "";
-        return functionName !== ""
-          ? "ForwardRef(" + functionName + ")"
-          : "ForwardRef";
-    }
-    if (typeof type.then === "function") {
-      var thenable = type;
-      var resolvedThenable = refineResolvedThenable(thenable);
-      if (resolvedThenable) {
-        return getComponentName(resolvedThenable);
+        return getWrappedName(type, type.render, "ForwardRef");
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE: {
+        var thenable = type;
+        var resolvedThenable = refineResolvedLazyComponent(thenable);
+        if (resolvedThenable) {
+          return getComponentName(resolvedThenable);
+        }
       }
     }
   }
@@ -2699,15 +2698,16 @@ var Callback = /*              */ 32;
 var DidCapture = /*            */ 64;
 var Ref = /*                   */ 128;
 var Snapshot = /*              */ 256;
+var Passive = /*               */ 512;
 
-// Update & Callback & Ref & Snapshot
-var LifecycleEffectMask = /*   */ 420;
+// Passive & Update & Callback & Ref & Snapshot
+var LifecycleEffectMask = /*   */ 932;
 
 // Union of all host effects
-var HostEffectMask = /*        */ 511;
+var HostEffectMask = /*        */ 1023;
 
-var Incomplete = /*            */ 512;
-var ShouldCapture = /*         */ 1024;
+var Incomplete = /*            */ 1024;
+var ShouldCapture = /*         */ 2048;
 
 var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
 
@@ -2751,10 +2751,7 @@ function isFiberMounted(fiber) {
 function isMounted(component) {
   {
     var owner = ReactCurrentOwner$1.current;
-    if (
-      owner !== null &&
-      (owner.tag === ClassComponent || owner.tag === ClassComponentLazy)
-    ) {
+    if (owner !== null && owner.tag === ClassComponent) {
       var ownerFiber = owner;
       var instance = ownerFiber.stateNode;
       !instance._warnedAboutRefsInRender
@@ -3464,13 +3461,6 @@ var now$1 = hasNativePerformanceNow
 var scheduledCallback = null;
 var frameDeadline = 0;
 
-var frameDeadlineObject = {
-  timeRemaining: function() {
-    return frameDeadline - now$1();
-  },
-  didTimeout: false
-};
-
 function setTimeoutCallback() {
   // TODO (bvaughn) Hard-coded 5ms unblocks initial async testing.
   // React API probably changing to boolean rather than time remaining.
@@ -3481,7 +3471,7 @@ function setTimeoutCallback() {
   var callback = scheduledCallback;
   scheduledCallback = null;
   if (callback !== null) {
-    callback(frameDeadlineObject);
+    callback();
   }
 }
 
@@ -3500,6 +3490,10 @@ function cancelDeferredCallback$1(callbackID) {
   clearTimeout(callbackID); // Timeouts are always numbers on RN
 }
 
+function shouldYield$1() {
+  return frameDeadline <= now$1();
+}
+
 // Use to restore controlled state after a change event has fired.
 
 var restoreImpl = null;
@@ -3630,6 +3624,10 @@ var insertInContainerBefore = shim;
 var removeChild = shim;
 var removeChildFromContainer = shim;
 var resetTextContent = shim;
+var hideInstance = shim;
+var hideTextInstance = shim;
+var unhideInstance = shim;
+var unhideTextInstance = shim;
 
 // Renderers that don't support hydration
 // can re-export everything from this module.
@@ -3637,7 +3635,7 @@ var resetTextContent = shim;
 function shim$1() {
   invariant(
     false,
-    "The current renderer does not support hyration. " +
+    "The current renderer does not support hydration. " +
       "This error is likely caused by a bug in React. " +
       "Please file an issue."
   );
@@ -3673,10 +3671,6 @@ function _classCallCheck(instance, Constructor) {
 // This means that they never overlap.
 var nextReactTag = 2;
 
-/* eslint-disable no-use-before-define */
-
-/* eslint-enable no-use-before-define */
-
 // TODO: Remove this conditional once all changes have propagated.
 if (FabricUIManager.registerEventHandler) {
   /**
@@ -3908,9 +3902,10 @@ function shouldSetTextContent(type, props) {
 
 // The Fabric renderer is secondary to the existing React Native renderer.
 var isPrimaryRenderer = false;
-var now = now$1;
-var scheduleDeferredCallback = scheduleDeferredCallback$1;
-var cancelDeferredCallback = cancelDeferredCallback$1;
+var now$$1 = now$1;
+var scheduleDeferredCallback$$1 = scheduleDeferredCallback$1;
+var cancelDeferredCallback$$1 = cancelDeferredCallback$1;
+var shouldYield$$1 = shouldYield$1;
 
 var scheduleTimeout = setTimeout;
 var cancelTimeout = clearTimeout;
@@ -3956,6 +3951,42 @@ function cloneInstance(
   };
 }
 
+function cloneHiddenInstance(instance, type, props, internalInstanceHandle) {
+  var viewConfig = instance.canonical.viewConfig;
+  var node = instance.node;
+  var updatePayload = create(
+    { style: { display: "none" } },
+    viewConfig.validAttributes
+  );
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(node, updatePayload),
+    canonical: instance.canonical
+  };
+}
+
+function cloneUnhiddenInstance(instance, type, props, internalInstanceHandle) {
+  var viewConfig = instance.canonical.viewConfig;
+  var node = instance.node;
+  var updatePayload = diff(
+    Object.assign({}, props, { style: [props.style, { display: "none" }] }),
+    props,
+    viewConfig.validAttributes
+  );
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(node, updatePayload),
+    canonical: instance.canonical
+  };
+}
+
+function createHiddenTextInstance(
+  text,
+  rootContainerInstance,
+  hostContext,
+  internalInstanceHandle
+) {
+  throw new Error("Not yet implemented.");
+}
+
 function createContainerChildSet(container) {
   return FabricUIManager.createChildSet(container);
 }
@@ -4000,13 +4031,14 @@ var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
 
 function describeFiber(fiber) {
   switch (fiber.tag) {
-    case IndeterminateComponent:
-    case FunctionalComponent:
-    case FunctionalComponentLazy:
-    case ClassComponent:
-    case ClassComponentLazy:
-    case HostComponent:
-    case Mode:
+    case HostRoot:
+    case HostPortal:
+    case HostText:
+    case Fragment:
+    case ContextProvider:
+    case ContextConsumer:
+      return "";
+    default:
       var owner = fiber._debugOwner;
       var source = fiber._debugSource;
       var name = getComponentName(fiber.type);
@@ -4015,8 +4047,6 @@ function describeFiber(fiber) {
         ownerName = getComponentName(owner.type);
       }
       return describeComponentFrame(name, source, ownerName);
-    default:
-      return "";
   }
 }
 
@@ -4083,13 +4113,11 @@ function setCurrentPhase(lifeCyclePhase) {
 var debugRenderPhaseSideEffects = false;
 var debugRenderPhaseSideEffectsForStrictMode = false;
 var enableUserTimingAPI = true;
-var enableGetDerivedStateFromCatch = false;
-var enableSuspense = false;
+var enableHooks = false;
 var warnAboutDeprecatedLifecycles = false;
-var warnAboutLegacyContextAPI = false;
 var replayFailedUnitOfWorkWithInvokeGuardedCallback = true;
 var enableProfilerTimer = true;
-var enableSchedulerTracking = true;
+var enableSchedulerTracing = true;
 
 // Only used in www builds.
 
@@ -4363,7 +4391,10 @@ function stopFailedWorkTimer(fiber) {
       return;
     }
     fiber._debugIsCurrentlyTiming = false;
-    var warning = "An error was thrown inside this error boundary";
+    var warning =
+      fiber.tag === SuspenseComponent
+        ? "Rendering was suspended"
+        : "An error was thrown inside this error boundary";
     endFiberMark(fiber, null, warning);
   }
 }
@@ -4854,8 +4885,7 @@ function findCurrentUnmaskedContext(fiber) {
   // Currently this is only used with renderSubtreeIntoContainer; not sure if it
   // makes sense elsewhere
   invariant(
-    isFiberMounted(fiber) &&
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy),
+    isFiberMounted(fiber) && fiber.tag === ClassComponent,
     "Expected subtree parent to be a mounted class component. " +
       "This error is likely caused by a bug in React. Please file an issue."
   );
@@ -4872,13 +4902,6 @@ function findCurrentUnmaskedContext(fiber) {
         }
         break;
       }
-      case ClassComponentLazy: {
-        var _Component = getResultFromResolvedThenable(node.type);
-        if (isContextProvider(_Component)) {
-          return node.stateNode.__reactInternalMemoizedMergedChildContext;
-        }
-        break;
-      }
     }
     node = node.return;
   } while (node !== null);
@@ -4977,20 +5000,20 @@ function onCommitUnmount(fiber) {
 var maxSigned31BitInt = 1073741823;
 
 var NoWork = 0;
-var Sync = 1;
-var Never = maxSigned31BitInt;
+var Never = 1;
+var Sync = maxSigned31BitInt;
 
 var UNIT_SIZE = 10;
-var MAGIC_NUMBER_OFFSET = 2;
+var MAGIC_NUMBER_OFFSET = maxSigned31BitInt - 1;
 
 // 1 unit of expiration time represents 10ms.
 function msToExpirationTime(ms) {
   // Always add an offset so that we don't clash with the magic number for NoWork.
-  return ((ms / UNIT_SIZE) | 0) + MAGIC_NUMBER_OFFSET;
+  return MAGIC_NUMBER_OFFSET - ((ms / UNIT_SIZE) | 0);
 }
 
 function expirationTimeToMs(expirationTime) {
-  return (expirationTime - MAGIC_NUMBER_OFFSET) * UNIT_SIZE;
+  return (MAGIC_NUMBER_OFFSET - expirationTime) * UNIT_SIZE;
 }
 
 function ceiling(num, precision) {
@@ -4999,9 +5022,9 @@ function ceiling(num, precision) {
 
 function computeExpirationBucket(currentTime, expirationInMs, bucketSizeMs) {
   return (
-    MAGIC_NUMBER_OFFSET +
+    MAGIC_NUMBER_OFFSET -
     ceiling(
-      currentTime - MAGIC_NUMBER_OFFSET + expirationInMs / UNIT_SIZE,
+      MAGIC_NUMBER_OFFSET - currentTime + expirationInMs / UNIT_SIZE,
       bucketSizeMs / UNIT_SIZE
     )
   );
@@ -5041,7 +5064,7 @@ function computeInteractiveExpiration(currentTime) {
 }
 
 var NoContext = 0;
-var AsyncMode = 1;
+var ConcurrentMode = 1;
 var StrictMode = 2;
 var ProfileMode = 4;
 
@@ -5077,6 +5100,7 @@ function FiberNode(tag, pendingProps, key, mode) {
   // Instance
   this.tag = tag;
   this.key = key;
+  this.elementType = null;
   this.type = null;
   this.stateNode = null;
 
@@ -5109,6 +5133,23 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.alternate = null;
 
   if (enableProfilerTimer) {
+    // Note: The following is done to avoid a v8 deopt.
+    //
+    // It is important to initialize the fields below with doubles.
+    // Otherwise Fibers will deopt and end up having separate shapes when
+    // doubles are later assigned to fields that initially contained smis.
+    // This is a bug in v8 having something to do with Object.preventExtension().
+    //
+    // Learn more about this deopt here:
+    // https://github.com/facebook/react/issues/14365
+    // https://bugs.chromium.org/p/v8/issues/detail?id=8538
+    this.actualDuration = Number.NaN;
+    this.actualStartTime = Number.NaN;
+    this.selfBaseDuration = Number.NaN;
+    this.treeBaseDuration = Number.NaN;
+
+    // It's okay to replace the initial doubles with smis after initialization.
+    // This simplifies other profiler code and doesn't trigger the deopt.
     this.actualDuration = 0;
     this.actualStartTime = -1;
     this.selfBaseDuration = 0;
@@ -5149,17 +5190,25 @@ function shouldConstruct(Component) {
   return !!(prototype && prototype.isReactComponent);
 }
 
-function resolveLazyComponentTag(fiber, Component) {
+function isSimpleFunctionComponent(type) {
+  return (
+    typeof type === "function" &&
+    !shouldConstruct(type) &&
+    type.defaultProps === undefined
+  );
+}
+
+function resolveLazyComponentTag(Component) {
   if (typeof Component === "function") {
-    return shouldConstruct(Component)
-      ? ClassComponentLazy
-      : FunctionalComponentLazy;
-  } else if (
-    Component !== undefined &&
-    Component !== null &&
-    Component.$$typeof
-  ) {
-    return ForwardRefLazy;
+    return shouldConstruct(Component) ? ClassComponent : FunctionComponent;
+  } else if (Component !== undefined && Component !== null) {
+    var $$typeof = Component.$$typeof;
+    if ($$typeof === REACT_FORWARD_REF_TYPE) {
+      return ForwardRef;
+    }
+    if ($$typeof === REACT_MEMO_TYPE) {
+      return MemoComponent;
+    }
   }
   return IndeterminateComponent;
 }
@@ -5179,6 +5228,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       current.key,
       current.mode
     );
+    workInProgress.elementType = current.elementType;
     workInProgress.type = current.type;
     workInProgress.stateNode = current.stateNode;
 
@@ -5213,15 +5263,8 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
     }
   }
 
-  // Don't touching the subtree's expiration time, which has not changed.
   workInProgress.childExpirationTime = current.childExpirationTime;
-  if (pendingProps !== current.pendingProps) {
-    // This fiber has new props.
-    workInProgress.expirationTime = expirationTime;
-  } else {
-    // This fiber's props have not changed.
-    workInProgress.expirationTime = current.expirationTime;
-  }
+  workInProgress.expirationTime = current.expirationTime;
 
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
@@ -5242,8 +5285,8 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   return workInProgress;
 }
 
-function createHostRootFiber(isAsync) {
-  var mode = isAsync ? AsyncMode | StrictMode : NoContext;
+function createHostRootFiber(isConcurrent) {
+  var mode = isConcurrent ? ConcurrentMode | StrictMode : NoContext;
 
   if (enableProfilerTimer && isDevToolsPresent) {
     // Always collect profile timings when DevTools are present.
@@ -5255,20 +5298,23 @@ function createHostRootFiber(isAsync) {
   return createFiber(HostRoot, null, null, mode);
 }
 
-function createFiberFromElement(element, mode, expirationTime) {
-  var owner = null;
-  {
-    owner = element._owner;
-  }
-
+function createFiberFromTypeAndProps(
+  type, // React$ElementType
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
   var fiber = void 0;
-  var type = element.type;
-  var key = element.key;
-  var pendingProps = element.props;
 
-  var fiberTag = void 0;
+  var fiberTag = IndeterminateComponent;
+  // The resolved type is set if we know what the final type will be. I.e. it's not lazy.
+  var resolvedType = type;
   if (typeof type === "function") {
-    fiberTag = shouldConstruct(type) ? ClassComponent : IndeterminateComponent;
+    if (shouldConstruct(type)) {
+      fiberTag = ClassComponent;
+    }
   } else if (typeof type === "string") {
     fiberTag = HostComponent;
   } else {
@@ -5280,19 +5326,24 @@ function createFiberFromElement(element, mode, expirationTime) {
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = Mode;
-        mode |= AsyncMode | StrictMode;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(
+          pendingProps,
+          mode | ConcurrentMode | StrictMode,
+          expirationTime,
+          key
+        );
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = Mode;
-        mode |= StrictMode;
-        break;
+        return createFiberFromMode(
+          pendingProps,
+          mode | StrictMode,
+          expirationTime,
+          key
+        );
       case REACT_PROFILER_TYPE:
         return createFiberFromProfiler(pendingProps, mode, expirationTime, key);
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = PlaceholderComponent;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return createFiberFromSuspense(pendingProps, mode, expirationTime, key);
       default: {
         if (typeof type === "object" && type !== null) {
           switch (type.$$typeof) {
@@ -5306,12 +5357,13 @@ function createFiberFromElement(element, mode, expirationTime) {
             case REACT_FORWARD_REF_TYPE:
               fiberTag = ForwardRef;
               break getTag;
-            default: {
-              if (typeof type.then === "function") {
-                fiberTag = IndeterminateComponent;
-                break getTag;
-              }
-            }
+            case REACT_MEMO_TYPE:
+              fiberTag = MemoComponent;
+              break getTag;
+            case REACT_LAZY_TYPE:
+              fiberTag = LazyComponent;
+              resolvedType = null;
+              break getTag;
           }
         }
         var info = "";
@@ -5345,14 +5397,33 @@ function createFiberFromElement(element, mode, expirationTime) {
   }
 
   fiber = createFiber(fiberTag, pendingProps, key, mode);
-  fiber.type = type;
+  fiber.elementType = type;
+  fiber.type = resolvedType;
   fiber.expirationTime = expirationTime;
 
+  return fiber;
+}
+
+function createFiberFromElement(element, mode, expirationTime) {
+  var owner = null;
+  {
+    owner = element._owner;
+  }
+  var type = element.type;
+  var key = element.key;
+  var pendingProps = element.props;
+  var fiber = createFiberFromTypeAndProps(
+    type,
+    key,
+    pendingProps,
+    owner,
+    mode,
+    expirationTime
+  );
   {
     fiber._debugSource = element._source;
     fiber._debugOwner = element._owner;
   }
-
   return fiber;
 }
 
@@ -5376,12 +5447,41 @@ function createFiberFromProfiler(pendingProps, mode, expirationTime, key) {
   }
 
   var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode);
+  // TODO: The Profiler fiber shouldn't have a type. It has a tag.
+  fiber.elementType = REACT_PROFILER_TYPE;
   fiber.type = REACT_PROFILER_TYPE;
   fiber.expirationTime = expirationTime;
 
   return fiber;
 }
 
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(Mode, pendingProps, key, mode);
+
+  // TODO: The Mode fiber shouldn't have a type. It has a tag.
+  var type =
+    (mode & ConcurrentMode) === NoContext
+      ? REACT_STRICT_MODE_TYPE
+      : REACT_CONCURRENT_MODE_TYPE;
+  fiber.elementType = type;
+  fiber.type = type;
+
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
+function createFiberFromSuspense(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(SuspenseComponent, pendingProps, key, mode);
+
+  // TODO: The SuspenseComponent fiber shouldn't have a type. It has a tag.
+  var type = REACT_SUSPENSE_TYPE;
+  fiber.elementType = type;
+  fiber.type = type;
+
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
 function createFiberFromText(content, mode, expirationTime) {
   var fiber = createFiber(HostText, content, null, mode);
   fiber.expirationTime = expirationTime;
@@ -5390,6 +5490,8 @@ function createFiberFromText(content, mode, expirationTime) {
 
 function createFiberFromHostInstanceForDeletion() {
   var fiber = createFiber(HostComponent, null, null, NoContext);
+  // TODO: These should not need a type.
+  fiber.elementType = "DELETED";
   fiber.type = "DELETED";
   return fiber;
 }
@@ -5422,6 +5524,7 @@ function assignFiberPropertiesInDEV(target, source) {
 
   target.tag = source.tag;
   target.key = source.key;
+  target.elementType = source.elementType;
   target.type = source.type;
   target.stateNode = source.stateNode;
   target.return = source.return;
@@ -5455,29 +5558,26 @@ function assignFiberPropertiesInDEV(target, source) {
   return target;
 }
 
-/* eslint-disable no-use-before-define */
 // TODO: This should be lifted into the renderer.
 
-// The following attributes are only used by interaction tracking builds.
+// The following attributes are only used by interaction tracing builds.
 // They enable interactions to be associated with their async work,
 // And expose interaction metadata to the React DevTools Profiler plugin.
-// Note that these attributes are only defined when the enableSchedulerTracking flag is enabled.
+// Note that these attributes are only defined when the enableSchedulerTracing flag is enabled.
 
 // Exported FiberRoot type includes all properties,
 // To avoid requiring potentially error-prone :any casts throughout the project.
-// Profiling properties are only safe to access in profiling builds (when enableSchedulerTracking is true).
+// Profiling properties are only safe to access in profiling builds (when enableSchedulerTracing is true).
 // The types are defined separately within this file to ensure they stay in sync.
-// (We don't have to use an inline :any cast when enableSchedulerTracking is disabled.)
-
-/* eslint-enable no-use-before-define */
+// (We don't have to use an inline :any cast when enableSchedulerTracing is disabled.)
 
-function createFiberRoot(containerInfo, isAsync, hydrate) {
+function createFiberRoot(containerInfo, isConcurrent, hydrate) {
   // Cyclic construction. This cheats the type system right now because
   // stateNode is any.
-  var uninitializedFiber = createHostRootFiber(isAsync);
+  var uninitializedFiber = createHostRootFiber(isConcurrent);
 
   var root = void 0;
-  if (enableSchedulerTracking) {
+  if (enableSchedulerTracing) {
     root = {
       current: uninitializedFiber,
       containerInfo: containerInfo,
@@ -5502,7 +5602,7 @@ function createFiberRoot(containerInfo, isAsync, hydrate) {
       firstBatch: null,
       nextScheduledRoot: null,
 
-      interactionThreadID: tracking.unstable_getThreadID(),
+      interactionThreadID: tracing.unstable_getThreadID(),
       memoizedInteractions: new Set(),
       pendingInteractionMap: new Map()
     };
@@ -5536,8 +5636,8 @@ function createFiberRoot(containerInfo, isAsync, hydrate) {
   uninitializedFiber.stateNode = root;
 
   // The reason for the way the Flow types are structured in this file,
-  // Is to avoid needing :any casts everywhere interaction tracking fields are used.
-  // Unfortunately that requires an :any cast for non-interaction tracking capable builds.
+  // Is to avoid needing :any casts everywhere interaction tracing fields are used.
+  // Unfortunately that requires an :any cast for non-interaction tracing capable builds.
   // $FlowFixMe Remove this :any cast and replace it with something better.
   return root;
 }
@@ -5967,12 +6067,12 @@ function markPendingPriorityLevel(root, expirationTime) {
     // No other pending updates.
     root.earliestPendingTime = root.latestPendingTime = expirationTime;
   } else {
-    if (earliestPendingTime > expirationTime) {
+    if (earliestPendingTime < expirationTime) {
       // This is the earliest pending update.
       root.earliestPendingTime = expirationTime;
     } else {
       var latestPendingTime = root.latestPendingTime;
-      if (latestPendingTime < expirationTime) {
+      if (latestPendingTime > expirationTime) {
         // This is the latest pending update
         root.latestPendingTime = expirationTime;
       }
@@ -5998,12 +6098,12 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   // Let's see if the previous latest known pending level was just flushed.
   var latestPendingTime = root.latestPendingTime;
   if (latestPendingTime !== NoWork) {
-    if (latestPendingTime < earliestRemainingTime) {
+    if (latestPendingTime > earliestRemainingTime) {
       // We've flushed all the known pending levels.
       root.earliestPendingTime = root.latestPendingTime = NoWork;
     } else {
       var earliestPendingTime = root.earliestPendingTime;
-      if (earliestPendingTime < earliestRemainingTime) {
+      if (earliestPendingTime > earliestRemainingTime) {
         // We've flushed the earliest known pending level. Set this to the
         // latest pending time.
         root.earliestPendingTime = root.latestPendingTime;
@@ -6025,7 +6125,7 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   }
 
   var latestSuspendedTime = root.latestSuspendedTime;
-  if (earliestRemainingTime > latestSuspendedTime) {
+  if (earliestRemainingTime < latestSuspendedTime) {
     // The earliest remaining level is later than all the suspended work. That
     // means we've flushed all the suspended work.
     root.earliestSuspendedTime = NoWork;
@@ -6039,7 +6139,7 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
     return;
   }
 
-  if (earliestRemainingTime < earliestSuspendedTime) {
+  if (earliestRemainingTime > earliestSuspendedTime) {
     // The earliest remaining time is earlier than all the suspended work.
     // Treat it as a pending update.
     markPendingPriorityLevel(root, earliestRemainingTime);
@@ -6058,10 +6158,10 @@ function hasLowerPriorityWork(root, erroredExpirationTime) {
   var latestPingedTime = root.latestPingedTime;
   return (
     (latestPendingTime !== NoWork &&
-      latestPendingTime > erroredExpirationTime) ||
+      latestPendingTime < erroredExpirationTime) ||
     (latestSuspendedTime !== NoWork &&
-      latestSuspendedTime > erroredExpirationTime) ||
-    (latestPingedTime !== NoWork && latestPingedTime > erroredExpirationTime)
+      latestSuspendedTime < erroredExpirationTime) ||
+    (latestPingedTime !== NoWork && latestPingedTime < erroredExpirationTime)
   );
 }
 
@@ -6070,8 +6170,8 @@ function isPriorityLevelSuspended(root, expirationTime) {
   var latestSuspendedTime = root.latestSuspendedTime;
   return (
     earliestSuspendedTime !== NoWork &&
-    expirationTime >= earliestSuspendedTime &&
-    expirationTime <= latestSuspendedTime
+    expirationTime <= earliestSuspendedTime &&
+    expirationTime >= latestSuspendedTime
   );
 }
 
@@ -6104,10 +6204,10 @@ function markSuspendedPriorityLevel(root, suspendedTime) {
     // No other suspended levels.
     root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime;
   } else {
-    if (earliestSuspendedTime > suspendedTime) {
+    if (earliestSuspendedTime < suspendedTime) {
       // This is the earliest suspended level.
       root.earliestSuspendedTime = suspendedTime;
-    } else if (latestSuspendedTime < suspendedTime) {
+    } else if (latestSuspendedTime > suspendedTime) {
       // This is the latest suspended level
       root.latestSuspendedTime = suspendedTime;
     }
@@ -6123,7 +6223,7 @@ function markPingedPriorityLevel(root, pingedTime) {
   // is thrown out and not reused during the restarted render. One way to
   // invalidate the progressed work is to restart at expirationTime + 1.
   var latestPingedTime = root.latestPingedTime;
-  if (latestPingedTime === NoWork || latestPingedTime < pingedTime) {
+  if (latestPingedTime === NoWork || latestPingedTime > pingedTime) {
     root.latestPingedTime = pingedTime;
   }
   findNextExpirationTimeToWorkOn(pingedTime, root);
@@ -6133,7 +6233,7 @@ function clearPing(root, completedTime) {
   // TODO: Track whether the root was pinged during the render phase. If so,
   // we need to make sure we don't lose track of it.
   var latestPingedTime = root.latestPingedTime;
-  if (latestPingedTime !== NoWork && latestPingedTime <= completedTime) {
+  if (latestPingedTime !== NoWork && latestPingedTime >= completedTime) {
     root.latestPingedTime = NoWork;
   }
 }
@@ -6143,18 +6243,10 @@ function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
 
   var earliestPendingTime = root.earliestPendingTime;
   var earliestSuspendedTime = root.earliestSuspendedTime;
-  if (
-    earliestExpirationTime === NoWork ||
-    (earliestPendingTime !== NoWork &&
-      earliestPendingTime < earliestExpirationTime)
-  ) {
+  if (earliestPendingTime > earliestExpirationTime) {
     earliestExpirationTime = earliestPendingTime;
   }
-  if (
-    earliestExpirationTime === NoWork ||
-    (earliestSuspendedTime !== NoWork &&
-      earliestSuspendedTime < earliestExpirationTime)
-  ) {
+  if (earliestSuspendedTime > earliestExpirationTime) {
     earliestExpirationTime = earliestSuspendedTime;
   }
   return earliestExpirationTime;
@@ -6162,7 +6254,7 @@ function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
 
 function didExpireAtExpirationTime(root, currentTime) {
   var expirationTime = root.expirationTime;
-  if (expirationTime !== NoWork && currentTime >= expirationTime) {
+  if (expirationTime !== NoWork && currentTime <= expirationTime) {
     // The root has expired. Flush all work up to the current time.
     root.nextExpirationTimeToWorkOn = currentTime;
   }
@@ -6184,7 +6276,7 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   if (
     nextExpirationTimeToWorkOn === NoWork &&
     (completedExpirationTime === NoWork ||
-      latestSuspendedTime > completedExpirationTime)
+      latestSuspendedTime < completedExpirationTime)
   ) {
     // The lowest priority suspended work is the work most likely to be
     // committed next. Let's start rendering it again, so that if it times out,
@@ -6193,11 +6285,7 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   }
 
   var expirationTime = nextExpirationTimeToWorkOn;
-  if (
-    expirationTime !== NoWork &&
-    earliestSuspendedTime !== NoWork &&
-    earliestSuspendedTime < expirationTime
-  ) {
+  if (expirationTime !== NoWork && earliestSuspendedTime > expirationTime) {
     // Expire using the earliest known expiration time.
     expirationTime = earliestSuspendedTime;
   }
@@ -6421,7 +6509,7 @@ function enqueueUpdate(fiber, update) {
 
   {
     if (
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy) &&
+      fiber.tag === ClassComponent &&
       (currentlyProcessingQueue === queue1 ||
         (queue2 !== null && currentlyProcessingQueue === queue2)) &&
       !didWarnUpdateInsideUpdate
@@ -6569,7 +6657,7 @@ function processUpdateQueue(
   var resultState = newBaseState;
   while (update !== null) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
+    if (updateExpirationTime < renderExpirationTime) {
       // This update does not have sufficient priority. Skip it.
       if (newFirstUpdate === null) {
         // This is the first skipped update. It will be the first update in
@@ -6581,10 +6669,7 @@ function processUpdateQueue(
       }
       // Since this update will remain in the list, update the remaining
       // expiration time.
-      if (
-        newExpirationTime === NoWork ||
-        newExpirationTime > updateExpirationTime
-      ) {
+      if (newExpirationTime < updateExpirationTime) {
         newExpirationTime = updateExpirationTime;
       }
     } else {
@@ -6620,7 +6705,7 @@ function processUpdateQueue(
   update = queue.firstCapturedUpdate;
   while (update !== null) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
+    if (_updateExpirationTime < renderExpirationTime) {
       // This update does not have sufficient priority. Skip it.
       if (newFirstCapturedUpdate === null) {
         // This is the first skipped captured update. It will be the first
@@ -6634,10 +6719,7 @@ function processUpdateQueue(
       }
       // Since this update will remain in the list, update the remaining
       // expiration time.
-      if (
-        newExpirationTime === NoWork ||
-        newExpirationTime > _updateExpirationTime
-      ) {
+      if (newExpirationTime < _updateExpirationTime) {
         newExpirationTime = _updateExpirationTime;
       }
     } else {
@@ -6935,10 +7017,7 @@ function propagateContextChange(
         ) {
           // Match! Schedule an update on this fiber.
 
-          if (
-            fiber.tag === ClassComponent ||
-            fiber.tag === ClassComponentLazy
-          ) {
+          if (fiber.tag === ClassComponent) {
             // Schedule a force update on the work-in-progress.
             var update = createUpdate(renderExpirationTime);
             update.tag = ForceUpdate;
@@ -6949,17 +7028,13 @@ function propagateContextChange(
             enqueueUpdate(fiber, update);
           }
 
-          if (
-            fiber.expirationTime === NoWork ||
-            fiber.expirationTime > renderExpirationTime
-          ) {
+          if (fiber.expirationTime < renderExpirationTime) {
             fiber.expirationTime = renderExpirationTime;
           }
           var alternate = fiber.alternate;
           if (
             alternate !== null &&
-            (alternate.expirationTime === NoWork ||
-              alternate.expirationTime > renderExpirationTime)
+            alternate.expirationTime < renderExpirationTime
           ) {
             alternate.expirationTime = renderExpirationTime;
           }
@@ -6968,22 +7043,17 @@ function propagateContextChange(
           var node = fiber.return;
           while (node !== null) {
             alternate = node.alternate;
-            if (
-              node.childExpirationTime === NoWork ||
-              node.childExpirationTime > renderExpirationTime
-            ) {
+            if (node.childExpirationTime < renderExpirationTime) {
               node.childExpirationTime = renderExpirationTime;
               if (
                 alternate !== null &&
-                (alternate.childExpirationTime === NoWork ||
-                  alternate.childExpirationTime > renderExpirationTime)
+                alternate.childExpirationTime < renderExpirationTime
               ) {
                 alternate.childExpirationTime = renderExpirationTime;
               }
             } else if (
               alternate !== null &&
-              (alternate.childExpirationTime === NoWork ||
-                alternate.childExpirationTime > renderExpirationTime)
+              alternate.childExpirationTime < renderExpirationTime
             ) {
               alternate.childExpirationTime = renderExpirationTime;
             } else {
@@ -7068,7 +7138,7 @@ function readContext(context, observedBits) {
     if (lastContextDependency === null) {
       invariant(
         currentlyRenderingFiber !== null,
-        "Context.unstable_read(): Context can only be read while React is " +
+        "Context can only be read while React is " +
           "rendering, e.g. inside the render method or getDerivedStateFromProps."
       );
       // This is the first dependency in the list
@@ -7081,116 +7151,744 @@ function readContext(context, observedBits) {
   return isPrimaryRenderer ? context._currentValue : context._currentValue2;
 }
 
-var NO_CONTEXT = {};
+var NoEffect$1 = /*             */ 0;
+var UnmountSnapshot = /*      */ 2;
+var UnmountMutation = /*      */ 4;
+var MountMutation = /*        */ 8;
+var UnmountLayout = /*        */ 16;
+var MountLayout = /*          */ 32;
+var MountPassive = /*         */ 64;
+var UnmountPassive = /*       */ 128;
 
-var contextStackCursor$1 = createCursor(NO_CONTEXT);
-var contextFiberStackCursor = createCursor(NO_CONTEXT);
-var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+function areHookInputsEqual(arr1, arr2) {
+  // Don't bother comparing lengths in prod because these arrays should be
+  // passed inline.
+  {
+    !(arr1.length === arr2.length)
+      ? warning$1(
+          false,
+          "Detected a variable number of hook dependencies. The length of the " +
+            "dependencies array should be constant between renders.\n\n" +
+            "Previous: %s\n" +
+            "Incoming: %s",
+          arr1.join(", "),
+          arr2.join(", ")
+        )
+      : void 0;
+  }
+  for (var i = 0; i < arr1.length; i++) {
+    // Inlined Object.is polyfill.
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+    var val1 = arr1[i];
+    var val2 = arr2[i];
+    if (
+      (val1 === val2 && (val1 !== 0 || 1 / val1 === 1 / val2)) ||
+      (val1 !== val1 && val2 !== val2) // eslint-disable-line no-self-compare
+    ) {
+      continue;
+    }
+    return false;
+  }
+  return true;
+}
 
-function requiredContext(c) {
+// These are set right before calling the component.
+var renderExpirationTime = NoWork;
+// The work-in-progress fiber. I've named it differently to distinguish it from
+// the work-in-progress hook.
+var currentlyRenderingFiber$1 = null;
+
+// Hooks are stored as a linked list on the fiber's memoizedState field. The
+// current hook list is the list that belongs to the current fiber. The
+// work-in-progress hook list is a new list that will be added to the
+// work-in-progress fiber.
+var firstCurrentHook = null;
+var currentHook = null;
+var firstWorkInProgressHook = null;
+var workInProgressHook = null;
+
+var remainingExpirationTime = NoWork;
+var componentUpdateQueue = null;
+
+// Updates scheduled during render will trigger an immediate re-render at the
+// end of the current pass. We can't store these updates on the normal queue,
+// because if the work is aborted, they should be discarded. Because this is
+// a relatively rare case, we also don't want to add an additional field to
+// either the hook or queue object types. So we store them in a lazily create
+// map of queue -> render-phase updates, which are discarded once the component
+// completes without re-rendering.
+
+// Whether the work-in-progress hook is a re-rendered hook
+var isReRender = false;
+// Whether an update was scheduled during the currently executing render pass.
+var didScheduleRenderPhaseUpdate = false;
+// Lazily created map of render-phase updates
+var renderPhaseUpdates = null;
+// Counter to prevent infinite loops.
+var numberOfReRenders = 0;
+var RE_RENDER_LIMIT = 25;
+
+function resolveCurrentlyRenderingFiber() {
   invariant(
-    c !== NO_CONTEXT,
-    "Expected host context to exist. This error is likely caused by a bug " +
-      "in React. Please file an issue."
+    currentlyRenderingFiber$1 !== null,
+    "Hooks can only be called inside the body of a function component."
   );
-  return c;
+  return currentlyRenderingFiber$1;
 }
 
-function getRootHostContainer() {
-  var rootInstance = requiredContext(rootInstanceStackCursor.current);
-  return rootInstance;
-}
+function prepareToUseHooks(current, workInProgress, nextRenderExpirationTime) {
+  if (!enableHooks) {
+    return;
+  }
+  renderExpirationTime = nextRenderExpirationTime;
+  currentlyRenderingFiber$1 = workInProgress;
+  firstCurrentHook = current !== null ? current.memoizedState : null;
 
-function pushHostContainer(fiber, nextRootInstance) {
-  // Push current root instance onto the stack;
-  // This allows us to reset root when portals are popped.
-  push(rootInstanceStackCursor, nextRootInstance, fiber);
-  // Track the context and the Fiber that provided it.
-  // This enables us to pop only Fibers that provide unique contexts.
-  push(contextFiberStackCursor, fiber, fiber);
+  // The following should have already been reset
+  // currentHook = null;
+  // workInProgressHook = null;
 
-  // Finally, we need to push the host context to the stack.
-  // However, we can't just call getRootHostContext() and push it because
-  // we'd have a different number of entries on the stack depending on
-  // whether getRootHostContext() throws somewhere in renderer code or not.
-  // So we push an empty value first. This lets us safely unwind on errors.
-  push(contextStackCursor$1, NO_CONTEXT, fiber);
-  var nextRootContext = getRootHostContext(nextRootInstance);
-  // Now that we know this function doesn't throw, replace it.
-  pop(contextStackCursor$1, fiber);
-  push(contextStackCursor$1, nextRootContext, fiber);
-}
+  // remainingExpirationTime = NoWork;
+  // componentUpdateQueue = null;
 
-function popHostContainer(fiber) {
-  pop(contextStackCursor$1, fiber);
-  pop(contextFiberStackCursor, fiber);
-  pop(rootInstanceStackCursor, fiber);
+  // isReRender = false;
+  // didScheduleRenderPhaseUpdate = false;
+  // renderPhaseUpdates = null;
+  // numberOfReRenders = 0;
 }
 
-function getHostContext() {
-  var context = requiredContext(contextStackCursor$1.current);
-  return context;
-}
+function finishHooks(Component, props, children, refOrContext) {
+  if (!enableHooks) {
+    return children;
+  }
 
-function pushHostContext(fiber) {
-  var rootInstance = requiredContext(rootInstanceStackCursor.current);
-  var context = requiredContext(contextStackCursor$1.current);
-  var nextContext = getChildHostContext(context, fiber.type, rootInstance);
+  // This must be called after every function component to prevent hooks from
+  // being used in classes.
 
-  // Don't push this Fiber's context unless it's unique.
-  if (context === nextContext) {
-    return;
-  }
+  while (didScheduleRenderPhaseUpdate) {
+    // Updates were scheduled during the render phase. They are stored in
+    // the `renderPhaseUpdates` map. Call the component again, reusing the
+    // work-in-progress hooks and applying the additional updates on top. Keep
+    // restarting until no more updates are scheduled.
+    didScheduleRenderPhaseUpdate = false;
+    numberOfReRenders += 1;
 
-  // Track the context and the Fiber that provided it.
-  // This enables us to pop only Fibers that provide unique contexts.
-  push(contextFiberStackCursor, fiber, fiber);
-  push(contextStackCursor$1, nextContext, fiber);
-}
+    // Start over from the beginning of the list
+    currentHook = null;
+    workInProgressHook = null;
+    componentUpdateQueue = null;
 
-function popHostContext(fiber) {
-  // Do not pop unless this Fiber provided the current context.
-  // pushHostContext() only pushes Fibers that provide unique contexts.
-  if (contextFiberStackCursor.current !== fiber) {
-    return;
+    children = Component(props, refOrContext);
   }
+  renderPhaseUpdates = null;
+  numberOfReRenders = 0;
 
-  pop(contextStackCursor$1, fiber);
-  pop(contextFiberStackCursor, fiber);
-}
+  var renderedWork = currentlyRenderingFiber$1;
 
-var commitTime = 0;
-var profilerStartTime = -1;
+  renderedWork.memoizedState = firstWorkInProgressHook;
+  renderedWork.expirationTime = remainingExpirationTime;
+  renderedWork.updateQueue = componentUpdateQueue;
 
-function getCommitTime() {
-  return commitTime;
-}
+  var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null;
 
-function recordCommitTime() {
-  if (!enableProfilerTimer) {
-    return;
-  }
-  commitTime = now();
-}
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
 
-function startProfilerTimer(fiber) {
-  if (!enableProfilerTimer) {
-    return;
-  }
+  firstCurrentHook = null;
+  currentHook = null;
+  firstWorkInProgressHook = null;
+  workInProgressHook = null;
 
-  profilerStartTime = now();
+  remainingExpirationTime = NoWork;
+  componentUpdateQueue = null;
 
-  if (fiber.actualStartTime < 0) {
-    fiber.actualStartTime = now();
-  }
+  // Always set during createWorkInProgress
+  // isReRender = false;
+
+  // These were reset above
+  // didScheduleRenderPhaseUpdate = false;
+  // renderPhaseUpdates = null;
+  // numberOfReRenders = 0;
+
+  invariant(
+    !didRenderTooFewHooks,
+    "Rendered fewer hooks than expected. This may be caused by an accidental " +
+      "early return statement."
+  );
+
+  return children;
 }
 
-function stopProfilerTimerIfRunning(fiber) {
-  if (!enableProfilerTimer) {
+function resetHooks() {
+  if (!enableHooks) {
     return;
   }
-  profilerStartTime = -1;
-}
+
+  // This is called instead of `finishHooks` if the component throws. It's also
+  // called inside mountIndeterminateComponent if we determine the component
+  // is a module-style component.
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
+
+  firstCurrentHook = null;
+  currentHook = null;
+  firstWorkInProgressHook = null;
+  workInProgressHook = null;
+
+  remainingExpirationTime = NoWork;
+  componentUpdateQueue = null;
+
+  // Always set during createWorkInProgress
+  // isReRender = false;
+
+  didScheduleRenderPhaseUpdate = false;
+  renderPhaseUpdates = null;
+  numberOfReRenders = 0;
+}
+
+function createHook() {
+  return {
+    memoizedState: null,
+
+    baseState: null,
+    queue: null,
+    baseUpdate: null,
+
+    next: null
+  };
+}
+
+function cloneHook(hook) {
+  return {
+    memoizedState: hook.memoizedState,
+
+    baseState: hook.baseState,
+    queue: hook.queue,
+    baseUpdate: hook.baseUpdate,
+
+    next: null
+  };
+}
+
+function createWorkInProgressHook() {
+  if (workInProgressHook === null) {
+    // This is the first hook in the list
+    if (firstWorkInProgressHook === null) {
+      isReRender = false;
+      currentHook = firstCurrentHook;
+      if (currentHook === null) {
+        // This is a newly mounted hook
+        workInProgressHook = createHook();
+      } else {
+        // Clone the current hook.
+        workInProgressHook = cloneHook(currentHook);
+      }
+      firstWorkInProgressHook = workInProgressHook;
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      currentHook = firstCurrentHook;
+      workInProgressHook = firstWorkInProgressHook;
+    }
+  } else {
+    if (workInProgressHook.next === null) {
+      isReRender = false;
+      var hook = void 0;
+      if (currentHook === null) {
+        // This is a newly mounted hook
+        hook = createHook();
+      } else {
+        currentHook = currentHook.next;
+        if (currentHook === null) {
+          // This is a newly mounted hook
+          hook = createHook();
+        } else {
+          // Clone the current hook.
+          hook = cloneHook(currentHook);
+        }
+      }
+      // Append to the end of the list
+      workInProgressHook = workInProgressHook.next = hook;
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = workInProgressHook.next;
+      currentHook = currentHook !== null ? currentHook.next : null;
+    }
+  }
+  return workInProgressHook;
+}
+
+function createFunctionComponentUpdateQueue() {
+  return {
+    lastEffect: null
+  };
+}
+
+function basicStateReducer(state, action) {
+  return typeof action === "function" ? action(state) : action;
+}
+
+function useContext(context, observedBits) {
+  // Ensure we're in a function component (class components support only the
+  // .unstable_read() form)
+  resolveCurrentlyRenderingFiber();
+  return readContext(context, observedBits);
+}
+
+function useState(initialState) {
+  return useReducer(
+    basicStateReducer,
+    // useReducer has a special case to support lazy useState initializers
+    initialState
+  );
+}
+
+function useReducer(reducer, initialState, initialAction) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+  var queue = workInProgressHook.queue;
+  if (queue !== null) {
+    // Already have a queue, so this is an update.
+    if (isReRender) {
+      // This is a re-render. Apply the new render phase updates to the previous
+      var _dispatch2 = queue.dispatch;
+      if (renderPhaseUpdates !== null) {
+        // Render phase updates are stored in a map of queue -> linked list
+        var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+        if (firstRenderPhaseUpdate !== undefined) {
+          renderPhaseUpdates.delete(queue);
+          var newState = workInProgressHook.memoizedState;
+          var update = firstRenderPhaseUpdate;
+          do {
+            // Process this render phase update. We don't have to check the
+            // priority because it will always be the same as the current
+            // render's.
+            var _action = update.action;
+            newState = reducer(newState, _action);
+            update = update.next;
+          } while (update !== null);
+
+          workInProgressHook.memoizedState = newState;
+
+          // Don't persist the state accumlated from the render phase updates to
+          // the base state unless the queue is empty.
+          // TODO: Not sure if this is the desired semantics, but it's what we
+          // do for gDSFP. I can't remember why.
+          if (workInProgressHook.baseUpdate === queue.last) {
+            workInProgressHook.baseState = newState;
+          }
+
+          return [newState, _dispatch2];
+        }
+      }
+      return [workInProgressHook.memoizedState, _dispatch2];
+    }
+
+    // The last update in the entire queue
+    var _last = queue.last;
+    // The last update that is part of the base state.
+    var _baseUpdate = workInProgressHook.baseUpdate;
+
+    // Find the first unprocessed update.
+    var first = void 0;
+    if (_baseUpdate !== null) {
+      if (_last !== null) {
+        // For the first update, the queue is a circular linked list where
+        // `queue.last.next = queue.first`. Once the first update commits, and
+        // the `baseUpdate` is no longer empty, we can unravel the list.
+        _last.next = null;
+      }
+      first = _baseUpdate.next;
+    } else {
+      first = _last !== null ? _last.next : null;
+    }
+    if (first !== null) {
+      var _newState = workInProgressHook.baseState;
+      var newBaseState = null;
+      var newBaseUpdate = null;
+      var prevUpdate = _baseUpdate;
+      var _update = first;
+      var didSkip = false;
+      do {
+        var updateExpirationTime = _update.expirationTime;
+        if (updateExpirationTime < renderExpirationTime) {
+          // Priority is insufficient. Skip this update. If this is the first
+          // skipped update, the previous update/state is the new base
+          // update/state.
+          if (!didSkip) {
+            didSkip = true;
+            newBaseUpdate = prevUpdate;
+            newBaseState = _newState;
+          }
+          // Update the remaining priority in the queue.
+          if (updateExpirationTime > remainingExpirationTime) {
+            remainingExpirationTime = updateExpirationTime;
+          }
+        } else {
+          // Process this update.
+          var _action2 = _update.action;
+          _newState = reducer(_newState, _action2);
+        }
+        prevUpdate = _update;
+        _update = _update.next;
+      } while (_update !== null && _update !== first);
+
+      if (!didSkip) {
+        newBaseUpdate = prevUpdate;
+        newBaseState = _newState;
+      }
+
+      workInProgressHook.memoizedState = _newState;
+      workInProgressHook.baseUpdate = newBaseUpdate;
+      workInProgressHook.baseState = newBaseState;
+    }
+
+    var _dispatch = queue.dispatch;
+    return [workInProgressHook.memoizedState, _dispatch];
+  }
+
+  // There's no existing queue, so this is the initial render.
+  if (reducer === basicStateReducer) {
+    // Special case for `useState`.
+    if (typeof initialState === "function") {
+      initialState = initialState();
+    }
+  } else if (initialAction !== undefined && initialAction !== null) {
+    initialState = reducer(initialState, initialAction);
+  }
+  workInProgressHook.memoizedState = workInProgressHook.baseState = initialState;
+  queue = workInProgressHook.queue = {
+    last: null,
+    dispatch: null
+  };
+  var dispatch = (queue.dispatch = dispatchAction.bind(
+    null,
+    currentlyRenderingFiber$1,
+    queue
+  ));
+  return [workInProgressHook.memoizedState, dispatch];
+}
+
+function pushEffect(tag, create, destroy, inputs) {
+  var effect = {
+    tag: tag,
+    create: create,
+    destroy: destroy,
+    inputs: inputs,
+    // Circular
+    next: null
+  };
+  if (componentUpdateQueue === null) {
+    componentUpdateQueue = createFunctionComponentUpdateQueue();
+    componentUpdateQueue.lastEffect = effect.next = effect;
+  } else {
+    var _lastEffect = componentUpdateQueue.lastEffect;
+    if (_lastEffect === null) {
+      componentUpdateQueue.lastEffect = effect.next = effect;
+    } else {
+      var firstEffect = _lastEffect.next;
+      _lastEffect.next = effect;
+      effect.next = firstEffect;
+      componentUpdateQueue.lastEffect = effect;
+    }
+  }
+  return effect;
+}
+
+function useRef(initialValue) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+  var ref = void 0;
+
+  if (workInProgressHook.memoizedState === null) {
+    ref = { current: initialValue };
+    {
+      Object.seal(ref);
+    }
+    workInProgressHook.memoizedState = ref;
+  } else {
+    ref = workInProgressHook.memoizedState;
+  }
+  return ref;
+}
+
+function useLayoutEffect(create, inputs) {
+  useEffectImpl(Update, UnmountMutation | MountLayout, create, inputs);
+}
+
+function useEffect(create, inputs) {
+  useEffectImpl(
+    Update | Passive,
+    UnmountPassive | MountPassive,
+    create,
+    inputs
+  );
+}
+
+function useEffectImpl(fiberEffectTag, hookEffectTag, create, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs = inputs !== undefined && inputs !== null ? inputs : [create];
+  var destroy = null;
+  if (currentHook !== null) {
+    var prevEffect = currentHook.memoizedState;
+    destroy = prevEffect.destroy;
+    if (areHookInputsEqual(nextInputs, prevEffect.inputs)) {
+      pushEffect(NoEffect$1, create, destroy, nextInputs);
+      return;
+    }
+  }
+
+  currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+  workInProgressHook.memoizedState = pushEffect(
+    hookEffectTag,
+    create,
+    destroy,
+    nextInputs
+  );
+}
+
+function useImperativeMethods(ref, create, inputs) {
+  // TODO: If inputs are provided, should we skip comparing the ref itself?
+  var nextInputs =
+    inputs !== null && inputs !== undefined
+      ? inputs.concat([ref])
+      : [ref, create];
+
+  // TODO: I've implemented this on top of useEffect because it's almost the
+  // same thing, and it would require an equal amount of code. It doesn't seem
+  // like a common enough use case to justify the additional size.
+  useLayoutEffect(function() {
+    if (typeof ref === "function") {
+      var refCallback = ref;
+      var _inst = create();
+      refCallback(_inst);
+      return function() {
+        return refCallback(null);
+      };
+    } else if (ref !== null && ref !== undefined) {
+      var refObject = ref;
+      var _inst2 = create();
+      refObject.current = _inst2;
+      return function() {
+        refObject.current = null;
+      };
+    }
+  }, nextInputs);
+}
+
+function useCallback(callback, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs =
+    inputs !== undefined && inputs !== null ? inputs : [callback];
+
+  var prevState = workInProgressHook.memoizedState;
+  if (prevState !== null) {
+    var prevInputs = prevState[1];
+    if (areHookInputsEqual(nextInputs, prevInputs)) {
+      return prevState[0];
+    }
+  }
+  workInProgressHook.memoizedState = [callback, nextInputs];
+  return callback;
+}
+
+function useMemo(nextCreate, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs =
+    inputs !== undefined && inputs !== null ? inputs : [nextCreate];
+
+  var prevState = workInProgressHook.memoizedState;
+  if (prevState !== null) {
+    var prevInputs = prevState[1];
+    if (areHookInputsEqual(nextInputs, prevInputs)) {
+      return prevState[0];
+    }
+  }
+
+  var nextValue = nextCreate();
+  workInProgressHook.memoizedState = [nextValue, nextInputs];
+  return nextValue;
+}
+
+function dispatchAction(fiber, queue, action) {
+  invariant(
+    numberOfReRenders < RE_RENDER_LIMIT,
+    "Too many re-renders. React limits the number of renders to prevent " +
+      "an infinite loop."
+  );
+
+  var alternate = fiber.alternate;
+  if (
+    fiber === currentlyRenderingFiber$1 ||
+    (alternate !== null && alternate === currentlyRenderingFiber$1)
+  ) {
+    // This is a render phase update. Stash it in a lazily-created map of
+    // queue -> linked list of updates. After this render pass, we'll restart
+    // and apply the stashed updates on top of the work-in-progress hook.
+    didScheduleRenderPhaseUpdate = true;
+    var update = {
+      expirationTime: renderExpirationTime,
+      action: action,
+      next: null
+    };
+    if (renderPhaseUpdates === null) {
+      renderPhaseUpdates = new Map();
+    }
+    var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+    if (firstRenderPhaseUpdate === undefined) {
+      renderPhaseUpdates.set(queue, update);
+    } else {
+      // Append the update to the end of the list.
+      var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
+      while (lastRenderPhaseUpdate.next !== null) {
+        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+      }
+      lastRenderPhaseUpdate.next = update;
+    }
+  } else {
+    var currentTime = requestCurrentTime();
+    var _expirationTime = computeExpirationForFiber(currentTime, fiber);
+    var _update2 = {
+      expirationTime: _expirationTime,
+      action: action,
+      next: null
+    };
+    flushPassiveEffects();
+    // Append the update to the end of the list.
+    var _last2 = queue.last;
+    if (_last2 === null) {
+      // This is the first update. Create a circular list.
+      _update2.next = _update2;
+    } else {
+      var first = _last2.next;
+      if (first !== null) {
+        // Still circular.
+        _update2.next = first;
+      }
+      _last2.next = _update2;
+    }
+    queue.last = _update2;
+    scheduleWork(fiber, _expirationTime);
+  }
+}
+
+var NO_CONTEXT = {};
+
+var contextStackCursor$1 = createCursor(NO_CONTEXT);
+var contextFiberStackCursor = createCursor(NO_CONTEXT);
+var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+
+function requiredContext(c) {
+  invariant(
+    c !== NO_CONTEXT,
+    "Expected host context to exist. This error is likely caused by a bug " +
+      "in React. Please file an issue."
+  );
+  return c;
+}
+
+function getRootHostContainer() {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  return rootInstance;
+}
+
+function pushHostContainer(fiber, nextRootInstance) {
+  // Push current root instance onto the stack;
+  // This allows us to reset root when portals are popped.
+  push(rootInstanceStackCursor, nextRootInstance, fiber);
+  // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+  push(contextFiberStackCursor, fiber, fiber);
+
+  // Finally, we need to push the host context to the stack.
+  // However, we can't just call getRootHostContext() and push it because
+  // we'd have a different number of entries on the stack depending on
+  // whether getRootHostContext() throws somewhere in renderer code or not.
+  // So we push an empty value first. This lets us safely unwind on errors.
+  push(contextStackCursor$1, NO_CONTEXT, fiber);
+  var nextRootContext = getRootHostContext(nextRootInstance);
+  // Now that we know this function doesn't throw, replace it.
+  pop(contextStackCursor$1, fiber);
+  push(contextStackCursor$1, nextRootContext, fiber);
+}
+
+function popHostContainer(fiber) {
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+  pop(rootInstanceStackCursor, fiber);
+}
+
+function getHostContext() {
+  var context = requiredContext(contextStackCursor$1.current);
+  return context;
+}
+
+function pushHostContext(fiber) {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  var context = requiredContext(contextStackCursor$1.current);
+  var nextContext = getChildHostContext(context, fiber.type, rootInstance);
+
+  // Don't push this Fiber's context unless it's unique.
+  if (context === nextContext) {
+    return;
+  }
+
+  // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+  push(contextFiberStackCursor, fiber, fiber);
+  push(contextStackCursor$1, nextContext, fiber);
+}
+
+function popHostContext(fiber) {
+  // Do not pop unless this Fiber provided the current context.
+  // pushHostContext() only pushes Fibers that provide unique contexts.
+  if (contextFiberStackCursor.current !== fiber) {
+    return;
+  }
+
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+}
+
+var commitTime = 0;
+var profilerStartTime = -1;
+
+function getCommitTime() {
+  return commitTime;
+}
+
+function recordCommitTime() {
+  if (!enableProfilerTimer) {
+    return;
+  }
+  commitTime = now$$1();
+}
+
+function startProfilerTimer(fiber) {
+  if (!enableProfilerTimer) {
+    return;
+  }
+
+  profilerStartTime = now$$1();
+
+  if (fiber.actualStartTime < 0) {
+    fiber.actualStartTime = now$$1();
+  }
+}
+
+function stopProfilerTimerIfRunning(fiber) {
+  if (!enableProfilerTimer) {
+    return;
+  }
+  profilerStartTime = -1;
+}
 
 function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
   if (!enableProfilerTimer) {
@@ -7198,7 +7896,7 @@ function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
   }
 
   if (profilerStartTime >= 0) {
-    var elapsedTime = now() - profilerStartTime;
+    var elapsedTime = now$$1() - profilerStartTime;
     fiber.actualDuration += elapsedTime;
     if (overrideBaseTime) {
       fiber.selfBaseDuration = elapsedTime;
@@ -7267,8 +7965,82 @@ function shallowEqual(objA, objB) {
   return true;
 }
 
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    // Resolve default props. Taken from ReactElement
+    var props = Object.assign({}, baseProps);
+    var defaultProps = Component.defaultProps;
+    for (var propName in defaultProps) {
+      if (props[propName] === undefined) {
+        props[propName] = defaultProps[propName];
+      }
+    }
+    return props;
+  }
+  return baseProps;
+}
+
+function readLazyComponentType(lazyComponent) {
+  var status = lazyComponent._status;
+  var result = lazyComponent._result;
+  switch (status) {
+    case Resolved: {
+      var Component = result;
+      return Component;
+    }
+    case Rejected: {
+      var error = result;
+      throw error;
+    }
+    case Pending: {
+      var thenable = result;
+      throw thenable;
+    }
+    default: {
+      lazyComponent._status = Pending;
+      var ctor = lazyComponent._ctor;
+      var _thenable = ctor();
+      _thenable.then(
+        function(moduleObject) {
+          if (lazyComponent._status === Pending) {
+            var defaultExport = moduleObject.default;
+            {
+              if (defaultExport === undefined) {
+                warning$1(
+                  false,
+                  "lazy: Expected the result of a dynamic import() call. " +
+                    "Instead received: %s\n\nYour code should look like: \n  " +
+                    "const MyComponent = lazy(() => import('./MyComponent'))",
+                  moduleObject
+                );
+              }
+            }
+            lazyComponent._status = Resolved;
+            lazyComponent._result = defaultExport;
+          }
+        },
+        function(error) {
+          if (lazyComponent._status === Pending) {
+            lazyComponent._status = Rejected;
+            lazyComponent._result = error;
+          }
+        }
+      );
+      lazyComponent._result = _thenable;
+      throw _thenable;
+    }
+  }
+}
+
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner;
+
+function readContext$1(contextType) {
+  var dispatcher = ReactCurrentOwner$4.currentDispatcher;
+  return dispatcher.readContext(contextType);
+}
+
 var fakeInternalInstance = {};
-var isArray = Array.isArray;
+var isArray$1 = Array.isArray;
 
 // React.Component uses a shared frozen object by default.
 // We'll use it to determine whether we need to initialize legacy refs.
@@ -7282,6 +8054,8 @@ var didWarnAboutUndefinedDerivedState = void 0;
 var warnOnUndefinedDerivedState = void 0;
 var warnOnInvalidCallback = void 0;
 var didWarnAboutDirectlyAssigningPropsToState = void 0;
+var didWarnAboutContextTypeAndContextTypes = void 0;
+var didWarnAboutInvalidateContextType = void 0;
 
 {
   didWarnAboutStateAssignmentForComponent = new Set();
@@ -7290,6 +8064,8 @@ var didWarnAboutDirectlyAssigningPropsToState = void 0;
   didWarnAboutLegacyLifecyclesAndDerivedState = new Set();
   didWarnAboutDirectlyAssigningPropsToState = new Set();
   didWarnAboutUndefinedDerivedState = new Set();
+  didWarnAboutContextTypeAndContextTypes = new Set();
+  didWarnAboutInvalidateContextType = new Set();
 
   var didWarnOnInvalidCallback = new Set();
 
@@ -7402,6 +8178,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   },
@@ -7421,6 +8198,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   },
@@ -7439,6 +8217,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   }
@@ -7451,7 +8230,7 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   var instance = workInProgress.stateNode;
   if (typeof instance.shouldComponentUpdate === "function") {
@@ -7459,7 +8238,7 @@ function checkShouldComponentUpdate(
     var shouldUpdate = instance.shouldComponentUpdate(
       newProps,
       newState,
-      nextLegacyContext
+      nextContext
     );
     stopPhaseTimer();
 
@@ -7544,6 +8323,15 @@ function checkClassInstance(workInProgress, ctor, newProps) {
           name
         )
       : void 0;
+    var noInstanceContextType = !instance.contextType;
+    !noInstanceContextType
+      ? warningWithoutStack$1(
+          false,
+          "contextType was defined as an instance property on %s. Use a static " +
+            "property to define contextType instead.",
+          name
+        )
+      : void 0;
     var noInstanceContextTypes = !instance.contextTypes;
     !noInstanceContextTypes
       ? warningWithoutStack$1(
@@ -7553,6 +8341,21 @@ function checkClassInstance(workInProgress, ctor, newProps) {
           name
         )
       : void 0;
+
+    if (
+      ctor.contextType &&
+      ctor.contextTypes &&
+      !didWarnAboutContextTypeAndContextTypes.has(ctor)
+    ) {
+      didWarnAboutContextTypeAndContextTypes.add(ctor);
+      warningWithoutStack$1(
+        false,
+        "%s declares both contextTypes and contextType static properties. " +
+          "The legacy contextTypes property will be ignored.",
+        name
+      );
+    }
+
     var noComponentShouldUpdate =
       typeof instance.componentShouldUpdate !== "function";
     !noComponentShouldUpdate
@@ -7668,11 +8471,11 @@ function checkClassInstance(workInProgress, ctor, newProps) {
         )
       : void 0;
     var noInstanceGetDerivedStateFromCatch =
-      typeof instance.getDerivedStateFromCatch !== "function";
+      typeof instance.getDerivedStateFromError !== "function";
     !noInstanceGetDerivedStateFromCatch
       ? warningWithoutStack$1(
           false,
-          "%s: getDerivedStateFromCatch() is defined as an instance method " +
+          "%s: getDerivedStateFromError() is defined as an instance method " +
             "and will be ignored. Instead, declare it as a static method.",
           name
         )
@@ -7688,7 +8491,7 @@ function checkClassInstance(workInProgress, ctor, newProps) {
         )
       : void 0;
     var _state = instance.state;
-    if (_state && (typeof _state !== "object" || isArray(_state))) {
+    if (_state && (typeof _state !== "object" || isArray$1(_state))) {
       warningWithoutStack$1(
         false,
         "%s.state: must be set to an object or null",
@@ -7724,12 +8527,37 @@ function constructClassInstance(
   props,
   renderExpirationTime
 ) {
-  var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
-  var contextTypes = ctor.contextTypes;
-  var isContextConsumer = contextTypes !== null && contextTypes !== undefined;
-  var context = isContextConsumer
-    ? getMaskedContext(workInProgress, unmaskedContext)
-    : emptyContextObject;
+  var isLegacyContextConsumer = false;
+  var unmaskedContext = emptyContextObject;
+  var context = null;
+  var contextType = ctor.contextType;
+  if (typeof contextType === "object" && contextType !== null) {
+    {
+      if (
+        contextType.$$typeof !== REACT_CONTEXT_TYPE &&
+        !didWarnAboutInvalidateContextType.has(ctor)
+      ) {
+        didWarnAboutInvalidateContextType.add(ctor);
+        warningWithoutStack$1(
+          false,
+          "%s defines an invalid contextType. " +
+            "contextType should point to the Context object returned by React.createContext(). " +
+            "Did you accidentally pass the Context.Provider instead?",
+          getComponentName(ctor) || "Component"
+        );
+      }
+    }
+
+    context = readContext$1(contextType);
+  } else {
+    unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    var contextTypes = ctor.contextTypes;
+    isLegacyContextConsumer =
+      contextTypes !== null && contextTypes !== undefined;
+    context = isLegacyContextConsumer
+      ? getMaskedContext(workInProgress, unmaskedContext)
+      : emptyContextObject;
+  }
 
   // Instantiate twice to help detect side-effects.
   {
@@ -7836,7 +8664,7 @@ function constructClassInstance(
 
   // Cache unmasked context so we can avoid recreating masked context unless necessary.
   // ReactFiberContext usually updates this cache but can't for newly-created instances.
-  if (isContextConsumer) {
+  if (isLegacyContextConsumer) {
     cacheContext(workInProgress, unmaskedContext, context);
   }
 
@@ -7874,15 +8702,15 @@ function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   var oldState = instance.state;
   startPhaseTimer(workInProgress, "componentWillReceiveProps");
   if (typeof instance.componentWillReceiveProps === "function") {
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   }
   if (typeof instance.UNSAFE_componentWillReceiveProps === "function") {
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   }
   stopPhaseTimer();
 
@@ -7916,12 +8744,17 @@ function mountClassInstance(
   }
 
   var instance = workInProgress.stateNode;
-  var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
-
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
+
+  var contextType = ctor.contextType;
+  if (typeof contextType === "object" && contextType !== null) {
+    instance.context = readContext$1(contextType);
+  } else {
+    var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    instance.context = getMaskedContext(workInProgress, unmaskedContext);
+  }
 
   {
     if (instance.state === newProps) {
@@ -8022,15 +8855,18 @@ function resumeMountClassInstance(
   instance.props = oldProps;
 
   var oldContext = instance.context;
-  var nextLegacyUnmaskedContext = getUnmaskedContext(
-    workInProgress,
-    ctor,
-    true
-  );
-  var nextLegacyContext = getMaskedContext(
-    workInProgress,
-    nextLegacyUnmaskedContext
-  );
+  var contextType = ctor.contextType;
+  var nextContext = void 0;
+  if (typeof contextType === "object" && contextType !== null) {
+    nextContext = readContext$1(contextType);
+  } else {
+    var nextLegacyUnmaskedContext = getUnmaskedContext(
+      workInProgress,
+      ctor,
+      true
+    );
+    nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext);
+  }
 
   var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
   var hasNewLifecycles =
@@ -8048,12 +8884,12 @@ function resumeMountClassInstance(
     (typeof instance.UNSAFE_componentWillReceiveProps === "function" ||
       typeof instance.componentWillReceiveProps === "function")
   ) {
-    if (oldProps !== newProps || oldContext !== nextLegacyContext) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
       callComponentWillReceiveProps(
         workInProgress,
         instance,
         newProps,
-        nextLegacyContext
+        nextContext
       );
     }
   }
@@ -8106,7 +8942,7 @@ function resumeMountClassInstance(
       newProps,
       oldState,
       newState,
-      nextLegacyContext
+      nextContext
     );
 
   if (shouldUpdate) {
@@ -8146,7 +8982,7 @@ function resumeMountClassInstance(
   // if shouldComponentUpdate returns false.
   instance.props = newProps;
   instance.state = newState;
-  instance.context = nextLegacyContext;
+  instance.context = nextContext;
 
   return shouldUpdate;
 }
@@ -8162,18 +8998,20 @@ function updateClassInstance(
   var instance = workInProgress.stateNode;
 
   var oldProps = workInProgress.memoizedProps;
-  instance.props = oldProps;
+  instance.props =
+    workInProgress.type === workInProgress.elementType
+      ? oldProps
+      : resolveDefaultProps(workInProgress.type, oldProps);
 
   var oldContext = instance.context;
-  var nextLegacyUnmaskedContext = getUnmaskedContext(
-    workInProgress,
-    ctor,
-    true
-  );
-  var nextLegacyContext = getMaskedContext(
-    workInProgress,
-    nextLegacyUnmaskedContext
-  );
+  var contextType = ctor.contextType;
+  var nextContext = void 0;
+  if (typeof contextType === "object" && contextType !== null) {
+    nextContext = readContext$1(contextType);
+  } else {
+    var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    nextContext = getMaskedContext(workInProgress, nextUnmaskedContext);
+  }
 
   var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
   var hasNewLifecycles =
@@ -8191,12 +9029,12 @@ function updateClassInstance(
     (typeof instance.UNSAFE_componentWillReceiveProps === "function" ||
       typeof instance.componentWillReceiveProps === "function")
   ) {
-    if (oldProps !== newProps || oldContext !== nextLegacyContext) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
       callComponentWillReceiveProps(
         workInProgress,
         instance,
         newProps,
-        nextLegacyContext
+        nextContext
       );
     }
   }
@@ -8263,7 +9101,7 @@ function updateClassInstance(
       newProps,
       oldState,
       newState,
-      nextLegacyContext
+      nextContext
     );
 
   if (shouldUpdate) {
@@ -8276,14 +9114,10 @@ function updateClassInstance(
     ) {
       startPhaseTimer(workInProgress, "componentWillUpdate");
       if (typeof instance.componentWillUpdate === "function") {
-        instance.componentWillUpdate(newProps, newState, nextLegacyContext);
+        instance.componentWillUpdate(newProps, newState, nextContext);
       }
       if (typeof instance.UNSAFE_componentWillUpdate === "function") {
-        instance.UNSAFE_componentWillUpdate(
-          newProps,
-          newState,
-          nextLegacyContext
-        );
+        instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext);
       }
       stopPhaseTimer();
     }
@@ -8323,7 +9157,7 @@ function updateClassInstance(
   // if shouldComponentUpdate returns false.
   instance.props = newProps;
   instance.state = newState;
-  instance.context = nextLegacyContext;
+  instance.context = nextContext;
 
   return shouldUpdate;
 }
@@ -8381,7 +9215,7 @@ var warnForMissingKey = function(child) {};
   };
 }
 
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 
 function coerceRef(returnFiber, current$$1, element) {
   var mixedRef = element.ref;
@@ -8416,9 +9250,8 @@ function coerceRef(returnFiber, current$$1, element) {
       if (owner) {
         var ownerFiber = owner;
         invariant(
-          ownerFiber.tag === ClassComponent ||
-            ownerFiber.tag === ClassComponentLazy,
-          "Stateless function components cannot have refs."
+          ownerFiber.tag === ClassComponent,
+          "Function components cannot have refs."
         );
         inst = ownerFiber.stateNode;
       }
@@ -8461,7 +9294,7 @@ function coerceRef(returnFiber, current$$1, element) {
         element._owner,
         "Element ref was specified as a string (%s) but no owner was set. This could happen for one of" +
           " the following reasons:\n" +
-          "1. You may be adding a ref to a functional component\n" +
+          "1. You may be adding a ref to a function component\n" +
           "2. You may be adding a ref to a component that was not created inside a component's render method\n" +
           "3. You have multiple copies of React loaded\n" +
           "See https://fb.me/react-refs-must-have-owner for more information.",
@@ -8637,7 +9470,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   }
 
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (current$$1 !== null && current$$1.type === element.type) {
+    if (current$$1 !== null && current$$1.elementType === element.type) {
       // Move based on index
       var existing = useFiber(current$$1, element.props, expirationTime);
       existing.ref = coerceRef(returnFiber, current$$1, element);
@@ -8749,7 +9582,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         var _created3 = createFiberFromFragment(
           newChild,
           returnFiber.mode,
@@ -8829,7 +9662,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         if (key !== null) {
           return null;
         }
@@ -8911,7 +9744,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         var _matchedFiber3 = existingChildren.get(newIdx) || null;
         return updateFragment(
           returnFiber,
@@ -9375,7 +10208,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         if (
           child.tag === Fragment
             ? element.type === REACT_FRAGMENT_TYPE
-            : child.type === element.type
+            : child.elementType === element.type
         ) {
           deleteRemainingChildren(returnFiber, child.sibling);
           var existing = useFiber(
@@ -9526,7 +10359,7 @@ function ChildReconciler(shouldTrackSideEffects) {
       );
     }
 
-    if (isArray$1(newChild)) {
+    if (isArray(newChild)) {
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -9558,8 +10391,7 @@ function ChildReconciler(shouldTrackSideEffects) {
       // component, throw an error. If Fiber return types are disabled,
       // we already threw above.
       switch (returnFiber.tag) {
-        case ClassComponent:
-        case ClassComponentLazy: {
+        case ClassComponent: {
           {
             var instance = returnFiber.stateNode;
             if (instance.render._isMockFunction) {
@@ -9571,7 +10403,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         // Intentionally fall through to the next case, which handles both
         // functions and classes
         // eslint-disable-next-lined no-fallthrough
-        case FunctionalComponent: {
+        case FunctionComponent: {
           var Component = returnFiber.type;
           invariant(
             false,
@@ -9942,59 +10774,20 @@ function resetHydrationState() {
   isHydrating = false;
 }
 
-function readLazyComponentType(thenable) {
-  var status = thenable._reactStatus;
-  switch (status) {
-    case Resolved:
-      var Component = thenable._reactResult;
-      return Component;
-    case Rejected:
-      throw thenable._reactResult;
-    case Pending:
-      throw thenable;
-    default: {
-      thenable._reactStatus = Pending;
-      thenable.then(
-        function(resolvedValue) {
-          if (thenable._reactStatus === Pending) {
-            thenable._reactStatus = Resolved;
-            if (typeof resolvedValue === "object" && resolvedValue !== null) {
-              // If the `default` property is not empty, assume it's the result
-              // of an async import() and use that. Otherwise, use the
-              // resolved value itself.
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                defaultExport !== undefined && defaultExport !== null
-                  ? defaultExport
-                  : resolvedValue;
-            } else {
-              resolvedValue = resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          if (thenable._reactStatus === Pending) {
-            thenable._reactStatus = Rejected;
-            thenable._reactResult = error;
-          }
-        }
-      );
-      throw thenable;
-    }
-  }
-}
-
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 
 var didWarnAboutBadClass = void 0;
-var didWarnAboutGetDerivedStateOnFunctionalComponent = void 0;
-var didWarnAboutStatelessRefs = void 0;
+var didWarnAboutContextTypeOnFunctionComponent = void 0;
+var didWarnAboutGetDerivedStateOnFunctionComponent = void 0;
+var didWarnAboutFunctionRefs = void 0;
+var didWarnAboutReassigningProps = void 0;
 
 {
   didWarnAboutBadClass = {};
-  didWarnAboutGetDerivedStateOnFunctionalComponent = {};
-  didWarnAboutStatelessRefs = {};
+  didWarnAboutContextTypeOnFunctionComponent = {};
+  didWarnAboutGetDerivedStateOnFunctionComponent = {};
+  didWarnAboutFunctionRefs = {};
+  didWarnAboutReassigningProps = false;
 }
 
 function reconcileChildren(
@@ -10030,47 +10823,249 @@ function reconcileChildren(
   }
 }
 
+function forceUnmountCurrentAndReconcile(
+  current$$1,
+  workInProgress,
+  nextChildren,
+  renderExpirationTime
+) {
+  // This function is fork of reconcileChildren. It's used in cases where we
+  // want to reconcile without matching against the existing set. This has the
+  // effect of all current children being unmounted; even if the type and key
+  // are the same, the old child is unmounted and a new child is created.
+  //
+  // To do this, we're going to go through the reconcile algorithm twice. In
+  // the first pass, we schedule a deletion for all the current children by
+  // passing null.
+  workInProgress.child = reconcileChildFibers(
+    workInProgress,
+    current$$1.child,
+    null,
+    renderExpirationTime
+  );
+  // In the second pass, we mount the new children. The trick here is that we
+  // pass null in place of where we usually pass the current child set. This has
+  // the effect of remounting all children regardless of whether their their
+  // identity matches.
+  workInProgress.child = reconcileChildFibers(
+    workInProgress,
+    null,
+    nextChildren,
+    renderExpirationTime
+  );
+}
+
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  var render = type.render;
-  var ref = workInProgress.ref;
-  if (hasContextChanged()) {
-    // Normally we can bail out on props equality but if context has changed
-    // we don't do the bailout and we have to reuse existing props instead.
-  } else if (workInProgress.memoizedProps === nextProps) {
-    var currentRef = current$$1 !== null ? current$$1.ref : null;
-    if (ref === currentRef) {
-      return bailoutOnAlreadyFinishedWork(
-        current$$1,
-        workInProgress,
-        renderExpirationTime
-      );
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
     }
   }
 
+  var render = Component.render;
+  var ref = workInProgress.ref;
+
+  // The rest is a fork of updateFunctionComponent
   var nextChildren = void 0;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(current$$1, workInProgress, renderExpirationTime);
   {
     ReactCurrentOwner$3.current = workInProgress;
     setCurrentPhase("render");
     nextChildren = render(nextProps, ref);
     setCurrentPhase(null);
   }
+  nextChildren = finishHooks(render, nextProps, nextChildren, ref);
 
+  // React DevTools reads this flag.
+  workInProgress.effectTag |= PerformedWork;
   reconcileChildren(
     current$$1,
     workInProgress,
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (current$$1 === null) {
+    var type = Component.type;
+    if (
+      isSimpleFunctionComponent(type) &&
+      Component.compare === null &&
+      // SimpleMemoComponent codepath doesn't resolve outer props either.
+      Component.defaultProps === undefined
+    ) {
+      // If this is a plain function component without default props,
+      // and with only the default shallow comparison, we upgrade it
+      // to a SimpleMemoComponent to allow fast path updates.
+      workInProgress.tag = SimpleMemoComponent;
+      workInProgress.type = type;
+      {
+        validateFunctionComponentInDev(workInProgress, type);
+      }
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        type,
+        nextProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    {
+      var innerPropTypes = type.propTypes;
+      if (innerPropTypes) {
+        // Inner memo component props aren't currently validated in createElement.
+        // We could move it there, but we'd still need this for lazy code path.
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(type),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+    var child = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    child.ref = workInProgress.ref;
+    child.return = workInProgress;
+    workInProgress.child = child;
+    return child;
+  }
+  {
+    var _type = Component.type;
+    var _innerPropTypes = _type.propTypes;
+    if (_innerPropTypes) {
+      // Inner memo component props aren't currently validated in createElement.
+      // We could move it there, but we'd still need this for lazy code path.
+      checkPropTypes(
+        _innerPropTypes,
+        nextProps, // Resolved props
+        "prop",
+        getComponentName(_type),
+        getCurrentFiberStackInDev
+      );
+    }
+  }
+  var currentChild = current$$1.child; // This is always exactly one child
+  if (updateExpirationTime < renderExpirationTime) {
+    // This will be the props with resolved defaultProps,
+    // unlike current.memoizedProps which will be the unresolved ones.
+    var prevProps = currentChild.memoizedProps;
+    // Default to shallow comparison
+    var compare = Component.compare;
+    compare = compare !== null ? compare : shallowEqual;
+    if (
+      compare(prevProps, nextProps) &&
+      current$$1.ref === workInProgress.ref
+    ) {
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    }
+  }
+  // React DevTools reads this flag.
+  workInProgress.effectTag |= PerformedWork;
+  var newChild = createWorkInProgress(
+    currentChild,
+    nextProps,
+    renderExpirationTime
+  );
+  newChild.ref = workInProgress.ref;
+  newChild.return = workInProgress;
+  workInProgress.child = newChild;
+  return newChild;
+}
+
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var outerMemoType = workInProgress.elementType;
+      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
+        // We warn when you define propTypes on lazy()
+        // so let's just skip over it to find memo() outer wrapper.
+        // Inner props for memo are validated later.
+        outerMemoType = refineResolvedLazyComponent(outerMemoType);
+      }
+      var outerPropTypes = outerMemoType && outerMemoType.propTypes;
+      if (outerPropTypes) {
+        checkPropTypes(
+          outerPropTypes,
+          nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
+          "prop",
+          getComponentName(outerMemoType),
+          getCurrentFiberStackInDev
+        );
+      }
+      // Inner propTypes will be validated in the function component path.
+    }
+  }
+  if (current$$1 !== null && updateExpirationTime < renderExpirationTime) {
+    var prevProps = current$$1.memoizedProps;
+    if (
+      shallowEqual(prevProps, nextProps) &&
+      current$$1.ref === workInProgress.ref
+    ) {
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    }
+  }
+  return updateFunctionComponent(
+    current$$1,
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
+  );
+}
+
 function updateFragment(current$$1, workInProgress, renderExpirationTime) {
   var nextChildren = workInProgress.pendingProps;
   reconcileChildren(
@@ -10079,7 +11074,6 @@ function updateFragment(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextChildren);
   return workInProgress.child;
 }
 
@@ -10091,7 +11085,6 @@ function updateMode(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextChildren);
   return workInProgress.child;
 }
 
@@ -10107,7 +11100,6 @@ function updateProfiler(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10122,24 +11114,43 @@ function markRef(current$$1, workInProgress) {
   }
 }
 
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
   nextProps,
   renderExpirationTime
 ) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+  }
+
   var unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
   var context = getMaskedContext(workInProgress, unmaskedContext);
 
   var nextChildren = void 0;
   prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(current$$1, workInProgress, renderExpirationTime);
   {
     ReactCurrentOwner$3.current = workInProgress;
     setCurrentPhase("render");
     nextChildren = Component(nextProps, context);
     setCurrentPhase(null);
   }
+  nextChildren = finishHooks(Component, nextProps, nextChildren, context);
 
   // React DevTools reads this flag.
   workInProgress.effectTag |= PerformedWork;
@@ -10149,7 +11160,6 @@ function updateFunctionalComponent(
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10160,6 +11170,23 @@ function updateClassComponent(
   nextProps,
   renderExpirationTime
 ) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+  }
+
   // Push context providers early to prevent context stack mismatches.
   // During mounting we don't know the child context yet as the instance doesn't exist.
   // We will invalidate the child context in finishClassComponent() right after rendering.
@@ -10172,32 +11199,41 @@ function updateClassComponent(
   }
   prepareToReadContext(workInProgress, renderExpirationTime);
 
+  var instance = workInProgress.stateNode;
   var shouldUpdate = void 0;
-  if (current$$1 === null) {
-    if (workInProgress.stateNode === null) {
-      // In the initial pass we might need to construct the instance.
-      constructClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-      mountClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-      shouldUpdate = true;
-    } else {
-      // In a resume, we'll already have an instance we can reuse.
-      shouldUpdate = resumeMountClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-    }
+  if (instance === null) {
+    if (current$$1 !== null) {
+      // An class component without an instance only mounts if it suspended
+      // inside a non- concurrent tree, in an inconsistent state. We want to
+      // tree it like a new mount, even though an empty version of it already
+      // committed. Disconnect the alternate pointers.
+      current$$1.alternate = null;
+      workInProgress.alternate = null;
+      // Since this is conceptually a new fiber, schedule a Placement effect
+      workInProgress.effectTag |= Placement;
+    }
+    // In the initial pass we might need to construct the instance.
+    constructClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
+    mountClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
+    shouldUpdate = true;
+  } else if (current$$1 === null) {
+    // In a resume, we'll already have an instance we can reuse.
+    shouldUpdate = resumeMountClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
   } else {
     shouldUpdate = updateClassInstance(
       current$$1,
@@ -10207,7 +11243,7 @@ function updateClassComponent(
       renderExpirationTime
     );
   }
-  return finishClassComponent(
+  var nextUnitOfWork = finishClassComponent(
     current$$1,
     workInProgress,
     Component,
@@ -10215,6 +11251,21 @@ function updateClassComponent(
     hasContext,
     renderExpirationTime
   );
+  {
+    var inst = workInProgress.stateNode;
+    if (inst.props !== nextProps) {
+      !didWarnAboutReassigningProps
+        ? warning$1(
+            false,
+            "It looks like %s is reassigning its own `this.props` while rendering. " +
+              "This is not supported and can lead to confusing bugs.",
+            getComponentName(workInProgress.type) || "a component"
+          )
+        : void 0;
+      didWarnAboutReassigningProps = true;
+    }
+  }
+  return nextUnitOfWork;
 }
 
 function finishClassComponent(
@@ -10250,8 +11301,7 @@ function finishClassComponent(
   var nextChildren = void 0;
   if (
     didCaptureError &&
-    (!enableGetDerivedStateFromCatch ||
-      typeof Component.getDerivedStateFromCatch !== "function")
+    typeof Component.getDerivedStateFromError !== "function"
   ) {
     // If we captured an error, but getDerivedStateFrom catch is not defined,
     // unmount all the children. componentDidCatch will schedule an update to
@@ -10281,24 +11331,28 @@ function finishClassComponent(
   // React DevTools reads this flag.
   workInProgress.effectTag |= PerformedWork;
   if (current$$1 !== null && didCaptureError) {
-    // If we're recovering from an error, reconcile twice: first to delete
-    // all the existing children.
-    reconcileChildren(current$$1, workInProgress, null, renderExpirationTime);
-    workInProgress.child = null;
-    // Now we can continue reconciling like normal. This has the effect of
-    // remounting all children regardless of whether their their
-    // identity matches.
+    // If we're recovering from an error, reconcile without reusing any of
+    // the existing children. Conceptually, the normal children and the children
+    // that are shown on error are two different sets, so we shouldn't reuse
+    // normal children even if their identities match.
+    forceUnmountCurrentAndReconcile(
+      current$$1,
+      workInProgress,
+      nextChildren,
+      renderExpirationTime
+    );
+  } else {
+    reconcileChildren(
+      current$$1,
+      workInProgress,
+      nextChildren,
+      renderExpirationTime
+    );
   }
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
-  // Memoize props and state using the values we just used to render.
+
+  // Memoize state using the values we just used to render.
   // TODO: Restructure so we never read values from the instance.
-  memoizeState(workInProgress, instance.state);
-  memoizeProps(workInProgress, instance.props);
+  workInProgress.memoizedState = instance.state;
 
   // The context might have changed so we need to recalculate it.
   if (hasContext) {
@@ -10427,12 +11481,11 @@ function updateHostComponent(current$$1, workInProgress, renderExpirationTime) {
   // Check the host config to see if the children are offscreen/hidden.
   if (
     renderExpirationTime !== Never &&
-    workInProgress.mode & AsyncMode &&
+    workInProgress.mode & ConcurrentMode &&
     shouldDeprioritizeSubtree(type, nextProps)
   ) {
     // Schedule this fiber to re-render at offscreen priority. Then bailout.
     workInProgress.expirationTime = Never;
-    workInProgress.memoizedProps = nextProps;
     return null;
   }
 
@@ -10442,7 +11495,6 @@ function updateHostComponent(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10450,97 +11502,203 @@ function updateHostText(current$$1, workInProgress) {
   if (current$$1 === null) {
     tryToClaimNextHydratableInstance(workInProgress);
   }
-  var nextProps = workInProgress.pendingProps;
-  memoizeProps(workInProgress, nextProps);
   // Nothing to do here. This is terminal. We'll do the completion step
   // immediately after.
   return null;
 }
 
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    // Resolve default props. Taken from ReactElement
-    var props = Object.assign({}, baseProps);
-    var defaultProps = Component.defaultProps;
-    for (var propName in defaultProps) {
-      if (props[propName] === undefined) {
-        props[propName] = defaultProps[propName];
+function mountLazyComponent(
+  _current,
+  workInProgress,
+  elementType,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (_current !== null) {
+    // An lazy component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
+  }
+
+  var props = workInProgress.pendingProps;
+  // We can't start a User Timing measurement with correct label yet.
+  // Cancel and resume right after we know the tag.
+  cancelWorkTimer(workInProgress);
+  var Component = readLazyComponentType(elementType);
+  // Store the unwrapped component in the type.
+  workInProgress.type = Component;
+  var resolvedTag = (workInProgress.tag = resolveLazyComponentTag(Component));
+  startWorkTimer(workInProgress);
+  var resolvedProps = resolveDefaultProps(Component, props);
+  var child = void 0;
+  switch (resolvedTag) {
+    case FunctionComponent: {
+      child = updateFunctionComponent(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case ClassComponent: {
+      child = updateClassComponent(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case ForwardRef: {
+      child = updateForwardRef(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case MemoComponent: {
+      {
+        if (workInProgress.type !== workInProgress.elementType) {
+          var outerPropTypes = Component.propTypes;
+          if (outerPropTypes) {
+            checkPropTypes(
+              outerPropTypes,
+              resolvedProps, // Resolved for outer only
+              "prop",
+              getComponentName(Component),
+              getCurrentFiberStackInDev
+            );
+          }
+        }
       }
+      child = updateMemoComponent(
+        null,
+        workInProgress,
+        Component,
+        resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too
+        updateExpirationTime,
+        renderExpirationTime
+      );
+      break;
+    }
+    default: {
+      var hint = "";
+      {
+        if (
+          Component !== null &&
+          typeof Component === "object" &&
+          Component.$$typeof === REACT_LAZY_TYPE
+        ) {
+          hint = " Did you wrap a component in React.lazy() more than once?";
+        }
+      }
+      // This message intentionally doesn't mention ForwardRef or MemoComponent
+      // because the fact that it's a separate type of work is an
+      // implementation detail.
+      invariant(
+        false,
+        "Element type is invalid. Received a promise that resolves to: %s. " +
+          "Lazy element type must resolve to a class or function.%s",
+        Component,
+        hint
+      );
     }
-    return props;
   }
-  return baseProps;
+  return child;
 }
 
-function mountIndeterminateComponent(
-  current$$1,
+function mountIncompleteClassComponent(
+  _current,
   workInProgress,
   Component,
+  nextProps,
   renderExpirationTime
 ) {
-  invariant(
-    current$$1 === null,
-    "An indeterminate component should never have mounted. This error is " +
-      "likely caused by a bug in React. Please file an issue."
+  if (_current !== null) {
+    // An incomplete component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
+  }
+
+  // Promote the fiber to a class and try rendering again.
+  workInProgress.tag = ClassComponent;
+
+  // The rest of this function is a fork of `updateClassComponent`
+
+  // Push context providers early to prevent context stack mismatches.
+  // During mounting we don't know the child context yet as the instance doesn't exist.
+  // We will invalidate the child context in finishClassComponent() right after rendering.
+  var hasContext = void 0;
+  if (isContextProvider(Component)) {
+    hasContext = true;
+    pushContextProvider(workInProgress);
+  } else {
+    hasContext = false;
+  }
+  prepareToReadContext(workInProgress, renderExpirationTime);
+
+  constructClassInstance(
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
+  );
+  mountClassInstance(
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
   );
 
-  var props = workInProgress.pendingProps;
-  if (
-    typeof Component === "object" &&
-    Component !== null &&
-    typeof Component.then === "function"
-  ) {
-    Component = readLazyComponentType(Component);
-    var resolvedTag = (workInProgress.tag = resolveLazyComponentTag(
-      workInProgress,
-      Component
-    ));
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (resolvedTag) {
-      case FunctionalComponentLazy: {
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      case ClassComponentLazy: {
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      case ForwardRefLazy: {
-        return updateForwardRef(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      default: {
-        // This message intentionally doesn't metion ForwardRef because the
-        // fact that it's a separate type of work is an implementation detail.
-        invariant(
-          false,
-          "Element type is invalid. Received a promise that resolves to: %s. " +
-            "Promise elements must resolve to a class or function.",
-          Component
-        );
-      }
-    }
+  return finishClassComponent(
+    null,
+    workInProgress,
+    Component,
+    true,
+    hasContext,
+    renderExpirationTime
+  );
+}
+
+function mountIndeterminateComponent(
+  _current,
+  workInProgress,
+  Component,
+  renderExpirationTime
+) {
+  if (_current !== null) {
+    // An indeterminate component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
   }
 
+  var props = workInProgress.pendingProps;
   var unmaskedContext = getUnmaskedContext(workInProgress, Component, false);
   var context = getMaskedContext(workInProgress, unmaskedContext);
 
   prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(null, workInProgress, renderExpirationTime);
 
   var value = void 0;
 
@@ -10582,6 +11740,9 @@ function mountIndeterminateComponent(
     // Proceed under the assumption that this is a class instance
     workInProgress.tag = ClassComponent;
 
+    // Throw out any hooks that were used.
+    resetHooks();
+
     // Push context providers early to prevent context stack mismatches.
     // During mounting we don't know the child context yet as the instance doesn't exist.
     // We will invalidate the child context in finishClassComponent() right after rendering.
@@ -10609,7 +11770,7 @@ function mountIndeterminateComponent(
     adoptClassInstance(workInProgress, value);
     mountClassInstance(workInProgress, Component, props, renderExpirationTime);
     return finishClassComponent(
-      current$$1,
+      null,
       workInProgress,
       Component,
       true,
@@ -10617,125 +11778,338 @@ function mountIndeterminateComponent(
       renderExpirationTime
     );
   } else {
-    // Proceed under the assumption that this is a functional component
-    workInProgress.tag = FunctionalComponent;
+    // Proceed under the assumption that this is a function component
+    workInProgress.tag = FunctionComponent;
+    value = finishHooks(Component, props, value, context);
+    reconcileChildren(null, workInProgress, value, renderExpirationTime);
     {
-      if (Component) {
-        !!Component.childContextTypes
-          ? warningWithoutStack$1(
-              false,
-              "%s(...): childContextTypes cannot be defined on a functional component.",
-              Component.displayName || Component.name || "Component"
-            )
-          : void 0;
-      }
-      if (workInProgress.ref !== null) {
-        var info = "";
-        var ownerName = getCurrentFiberOwnerNameInDevOrNull();
-        if (ownerName) {
-          info += "\n\nCheck the render method of `" + ownerName + "`.";
-        }
+      validateFunctionComponentInDev(workInProgress, Component);
+    }
+    return workInProgress.child;
+  }
+}
 
-        var warningKey = ownerName || workInProgress._debugID || "";
-        var debugSource = workInProgress._debugSource;
-        if (debugSource) {
-          warningKey = debugSource.fileName + ":" + debugSource.lineNumber;
-        }
-        if (!didWarnAboutStatelessRefs[warningKey]) {
-          didWarnAboutStatelessRefs[warningKey] = true;
-          warning$1(
-            false,
-            "Stateless function components cannot be given refs. " +
-              "Attempts to access this ref will fail.%s",
-            info
-          );
-        }
-      }
+function validateFunctionComponentInDev(workInProgress, Component) {
+  if (Component) {
+    !!Component.childContextTypes
+      ? warningWithoutStack$1(
+          false,
+          "%s(...): childContextTypes cannot be defined on a function component.",
+          Component.displayName || Component.name || "Component"
+        )
+      : void 0;
+  }
+  if (workInProgress.ref !== null) {
+    var info = "";
+    var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+    if (ownerName) {
+      info += "\n\nCheck the render method of `" + ownerName + "`.";
+    }
+
+    var warningKey = ownerName || workInProgress._debugID || "";
+    var debugSource = workInProgress._debugSource;
+    if (debugSource) {
+      warningKey = debugSource.fileName + ":" + debugSource.lineNumber;
+    }
+    if (!didWarnAboutFunctionRefs[warningKey]) {
+      didWarnAboutFunctionRefs[warningKey] = true;
+      warning$1(
+        false,
+        "Function components cannot be given refs. " +
+          "Attempts to access this ref will fail.%s",
+        info
+      );
+    }
+  }
 
-      if (typeof Component.getDerivedStateFromProps === "function") {
-        var _componentName = getComponentName(Component) || "Unknown";
+  if (typeof Component.getDerivedStateFromProps === "function") {
+    var componentName = getComponentName(Component) || "Unknown";
 
-        if (!didWarnAboutGetDerivedStateOnFunctionalComponent[_componentName]) {
-          warningWithoutStack$1(
-            false,
-            "%s: Stateless functional components do not support getDerivedStateFromProps.",
-            _componentName
-          );
-          didWarnAboutGetDerivedStateOnFunctionalComponent[
-            _componentName
-          ] = true;
-        }
-      }
+    if (!didWarnAboutGetDerivedStateOnFunctionComponent[componentName]) {
+      warningWithoutStack$1(
+        false,
+        "%s: Function components do not support getDerivedStateFromProps.",
+        componentName
+      );
+      didWarnAboutGetDerivedStateOnFunctionComponent[componentName] = true;
+    }
+  }
+
+  if (
+    typeof Component.contextType === "object" &&
+    Component.contextType !== null
+  ) {
+    var _componentName = getComponentName(Component) || "Unknown";
+
+    if (!didWarnAboutContextTypeOnFunctionComponent[_componentName]) {
+      warningWithoutStack$1(
+        false,
+        "%s: Function components do not support contextType.",
+        _componentName
+      );
+      didWarnAboutContextTypeOnFunctionComponent[_componentName] = true;
     }
-    reconcileChildren(current$$1, workInProgress, value, renderExpirationTime);
-    memoizeProps(workInProgress, props);
-    return workInProgress.child;
   }
 }
 
-function updatePlaceholderComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
   renderExpirationTime
 ) {
-  if (enableSuspense) {
-    var nextProps = workInProgress.pendingProps;
-
-    // Check if we already attempted to render the normal state. If we did,
-    // and we timed out, render the placeholder state.
-    var alreadyCaptured = (workInProgress.effectTag & DidCapture) === NoEffect;
-
-    var nextDidTimeout = void 0;
-    if (current$$1 !== null && workInProgress.updateQueue !== null) {
-      // We're outside strict mode. Something inside this Placeholder boundary
-      // suspended during the last commit. Switch to the placholder.
-      workInProgress.updateQueue = null;
-      nextDidTimeout = true;
-      // If we're recovering from an error, reconcile twice: first to delete
-      // all the existing children.
-      reconcileChildren(current$$1, workInProgress, null, renderExpirationTime);
-      current$$1.child = null;
-      // Now we can continue reconciling like normal. This has the effect of
-      // remounting all children regardless of whether their their
-      // identity matches.
+  var mode = workInProgress.mode;
+  var nextProps = workInProgress.pendingProps;
+
+  // We should attempt to render the primary children unless this boundary
+  // already suspended during this render (`alreadyCaptured` is true).
+  var nextState = workInProgress.memoizedState;
+
+  var nextDidTimeout = void 0;
+  if ((workInProgress.effectTag & DidCapture) === NoEffect) {
+    // This is the first attempt.
+    nextState = null;
+    nextDidTimeout = false;
+  } else {
+    // Something in this boundary's subtree already suspended. Switch to
+    // rendering the fallback children.
+    nextState = {
+      timedOutAt: nextState !== null ? nextState.timedOutAt : NoWork
+    };
+    nextDidTimeout = true;
+    workInProgress.effectTag &= ~DidCapture;
+  }
+
+  // This next part is a bit confusing. If the children timeout, we switch to
+  // showing the fallback children in place of the "primary" children.
+  // However, we don't want to delete the primary children because then their
+  // state will be lost (both the React state and the host state, e.g.
+  // uncontrolled form inputs). Instead we keep them mounted and hide them.
+  // Both the fallback children AND the primary children are rendered at the
+  // same time. Once the primary children are un-suspended, we can delete
+  // the fallback children — don't need to preserve their state.
+  //
+  // The two sets of children are siblings in the host environment, but
+  // semantically, for purposes of reconciliation, they are two separate sets.
+  // So we store them using two fragment fibers.
+  //
+  // However, we want to avoid allocating extra fibers for every placeholder.
+  // They're only necessary when the children time out, because that's the
+  // only time when both sets are mounted.
+  //
+  // So, the extra fragment fibers are only used if the children time out.
+  // Otherwise, we render the primary children directly. This requires some
+  // custom reconciliation logic to preserve the state of the primary
+  // children. It's essentially a very basic form of re-parenting.
+
+  // `child` points to the child fiber. In the normal case, this is the first
+  // fiber of the primary children set. In the timed-out case, it's a
+  // a fragment fiber containing the primary children.
+  var child = void 0;
+  // `next` points to the next fiber React should render. In the normal case,
+  // it's the same as `child`: the first fiber of the primary children set.
+  // In the timed-out case, it's a fragment fiber containing the *fallback*
+  // children -- we skip over the primary children entirely.
+  var next = void 0;
+  if (current$$1 === null) {
+    // This is the initial mount. This branch is pretty simple because there's
+    // no previous state that needs to be preserved.
+    if (nextDidTimeout) {
+      // Mount separate fragments for primary and fallback children.
+      var nextFallbackChildren = nextProps.fallback;
+      var primaryChildFragment = createFiberFromFragment(
+        null,
+        mode,
+        NoWork,
+        null
+      );
+
+      if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+        // Outside of concurrent mode, we commit the effects from the
+        var progressedState = workInProgress.memoizedState;
+        var progressedPrimaryChild =
+          progressedState !== null
+            ? workInProgress.child.child
+            : workInProgress.child;
+        primaryChildFragment.child = progressedPrimaryChild;
+      }
+
+      var fallbackChildFragment = createFiberFromFragment(
+        nextFallbackChildren,
+        mode,
+        renderExpirationTime,
+        null
+      );
+      primaryChildFragment.sibling = fallbackChildFragment;
+      child = primaryChildFragment;
+      // Skip the primary children, and continue working on the
+      // fallback children.
+      next = fallbackChildFragment;
+      child.return = next.return = workInProgress;
     } else {
-      nextDidTimeout = !alreadyCaptured;
+      // Mount the primary children without an intermediate fragment fiber.
+      var nextPrimaryChildren = nextProps.children;
+      child = next = mountChildFibers(
+        workInProgress,
+        null,
+        nextPrimaryChildren,
+        renderExpirationTime
+      );
     }
+  } else {
+    // This is an update. This branch is more complicated because we need to
+    // ensure the state of the primary children is preserved.
+    var prevState = current$$1.memoizedState;
+    var prevDidTimeout = prevState !== null;
+    if (prevDidTimeout) {
+      // The current tree already timed out. That means each child set is
+      var currentPrimaryChildFragment = current$$1.child;
+      var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;
+      if (nextDidTimeout) {
+        // Still timed out. Reuse the current primary children by cloning
+        // its fragment. We're going to skip over these entirely.
+        var _nextFallbackChildren = nextProps.fallback;
+        var _primaryChildFragment = createWorkInProgress(
+          currentPrimaryChildFragment,
+          currentPrimaryChildFragment.pendingProps,
+          NoWork
+        );
+
+        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+          // Outside of concurrent mode, we commit the effects from the
+          var _progressedState = workInProgress.memoizedState;
+          var _progressedPrimaryChild =
+            _progressedState !== null
+              ? workInProgress.child.child
+              : workInProgress.child;
+          if (_progressedPrimaryChild !== currentPrimaryChildFragment.child) {
+            _primaryChildFragment.child = _progressedPrimaryChild;
+          }
+        }
+
+        // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var treeBaseDuration = 0;
+          var hiddenChild = _primaryChildFragment.child;
+          while (hiddenChild !== null) {
+            treeBaseDuration += hiddenChild.treeBaseDuration;
+            hiddenChild = hiddenChild.sibling;
+          }
+          _primaryChildFragment.treeBaseDuration = treeBaseDuration;
+        }
+
+        // Clone the fallback child fragment, too. These we'll continue
+        // working on.
+        var _fallbackChildFragment = (_primaryChildFragment.sibling = createWorkInProgress(
+          currentFallbackChildFragment,
+          _nextFallbackChildren,
+          currentFallbackChildFragment.expirationTime
+        ));
+        child = _primaryChildFragment;
+        _primaryChildFragment.childExpirationTime = NoWork;
+        // Skip the primary children, and continue working on the
+        // fallback children.
+        next = _fallbackChildFragment;
+        child.return = next.return = workInProgress;
+      } else {
+        // No longer suspended. Switch back to showing the primary children,
+        // and remove the intermediate fragment fiber.
+        var _nextPrimaryChildren = nextProps.children;
+        var currentPrimaryChild = currentPrimaryChildFragment.child;
+        var primaryChild = reconcileChildFibers(
+          workInProgress,
+          currentPrimaryChild,
+          _nextPrimaryChildren,
+          renderExpirationTime
+        );
 
-    if ((workInProgress.mode & StrictMode) !== NoEffect) {
+        // If this render doesn't suspend, we need to delete the fallback
+        // children. Wait until the complete phase, after we've confirmed the
+        // fallback is no longer needed.
+        // TODO: Would it be better to store the fallback fragment on
+        // the stateNode?
+
+        // Continue rendering the children, like we normally do.
+        child = next = primaryChild;
+      }
+    } else {
+      // The current tree has not already timed out. That means the primary
+      // children are not wrapped in a fragment fiber.
+      var _currentPrimaryChild = current$$1.child;
       if (nextDidTimeout) {
-        // If the timed-out view commits, schedule an update effect to record
-        // the committed time.
-        workInProgress.effectTag |= Update;
+        // Timed out. Wrap the children in a fragment fiber to keep them
+        // separate from the fallback children.
+        var _nextFallbackChildren2 = nextProps.fallback;
+        var _primaryChildFragment2 = createFiberFromFragment(
+          // It shouldn't matter what the pending props are because we aren't
+          // going to render this fragment.
+          null,
+          mode,
+          NoWork,
+          null
+        );
+        _primaryChildFragment2.child = _currentPrimaryChild;
+
+        // Even though we're creating a new fiber, there are no new children,
+        // because we're reusing an already mounted tree. So we don't need to
+        // schedule a placement.
+        // primaryChildFragment.effectTag |= Placement;
+
+        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+          // Outside of concurrent mode, we commit the effects from the
+          var _progressedState2 = workInProgress.memoizedState;
+          var _progressedPrimaryChild2 =
+            _progressedState2 !== null
+              ? workInProgress.child.child
+              : workInProgress.child;
+          _primaryChildFragment2.child = _progressedPrimaryChild2;
+        }
+
+        // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var _treeBaseDuration = 0;
+          var _hiddenChild = _primaryChildFragment2.child;
+          while (_hiddenChild !== null) {
+            _treeBaseDuration += _hiddenChild.treeBaseDuration;
+            _hiddenChild = _hiddenChild.sibling;
+          }
+          _primaryChildFragment2.treeBaseDuration = _treeBaseDuration;
+        }
+
+        // Create a fragment from the fallback children, too.
+        var _fallbackChildFragment2 = (_primaryChildFragment2.sibling = createFiberFromFragment(
+          _nextFallbackChildren2,
+          mode,
+          renderExpirationTime,
+          null
+        ));
+        _fallbackChildFragment2.effectTag |= Placement;
+        child = _primaryChildFragment2;
+        _primaryChildFragment2.childExpirationTime = NoWork;
+        // Skip the primary children, and continue working on the
+        // fallback children.
+        next = _fallbackChildFragment2;
+        child.return = next.return = workInProgress;
       } else {
-        // The state node points to the time at which placeholder timed out.
-        // We can clear it once we switch back to the normal children.
-        workInProgress.stateNode = null;
+        // Still haven't timed out.  Continue rendering the children, like we
+        // normally do.
+        var _nextPrimaryChildren2 = nextProps.children;
+        next = child = reconcileChildFibers(
+          workInProgress,
+          _currentPrimaryChild,
+          _nextPrimaryChildren2,
+          renderExpirationTime
+        );
       }
     }
-
-    // If the `children` prop is a function, treat it like a render prop.
-    // TODO: This is temporary until we finalize a lower level API.
-    var children = nextProps.children;
-    var nextChildren = void 0;
-    if (typeof children === "function") {
-      nextChildren = children(nextDidTimeout);
-    } else {
-      nextChildren = nextDidTimeout ? nextProps.fallback : children;
-    }
-
-    workInProgress.memoizedProps = nextProps;
-    workInProgress.memoizedState = nextDidTimeout;
-    reconcileChildren(
-      current$$1,
-      workInProgress,
-      nextChildren,
-      renderExpirationTime
-    );
-    return workInProgress.child;
-  } else {
-    return null;
   }
+
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = child;
+  return next;
 }
 
 function updatePortalComponent(
@@ -10757,7 +12131,6 @@ function updatePortalComponent(
       nextChildren,
       renderExpirationTime
     );
-    memoizeProps(workInProgress, nextChildren);
   } else {
     reconcileChildren(
       current$$1,
@@ -10765,7 +12138,6 @@ function updatePortalComponent(
       nextChildren,
       renderExpirationTime
     );
-    memoizeProps(workInProgress, nextChildren);
   }
   return workInProgress.child;
 }
@@ -10782,7 +12154,6 @@ function updateContextProvider(
   var oldProps = workInProgress.memoizedProps;
 
   var newValue = newProps.value;
-  workInProgress.memoizedProps = newProps;
 
   {
     var providerPropTypes = workInProgress.type.propTypes;
@@ -10834,12 +12205,40 @@ function updateContextProvider(
   return workInProgress.child;
 }
 
+var hasWarnedAboutUsingContextAsConsumer = false;
+
 function updateContextConsumer(
   current$$1,
   workInProgress,
   renderExpirationTime
 ) {
   var context = workInProgress.type;
+  // The logic below for Context differs depending on PROD or DEV mode. In
+  // DEV mode, we create a separate object for Context.Consumer that acts
+  // like a proxy to Context. This proxy object adds unnecessary code in PROD
+  // so we use the old behaviour (Context.Consumer references Context) to
+  // reduce size and overhead. The separate object references context via
+  // a property called "_context", which also gives us the ability to check
+  // in DEV mode if this property exists or not and warn if it does not.
+  {
+    if (context._context === undefined) {
+      // This may be because it's a Context (rather than a Consumer).
+      // Or it may be because it's older React where they're the same thing.
+      // We only want to warn if we're sure it's a new React.
+      if (context !== context.Consumer) {
+        if (!hasWarnedAboutUsingContextAsConsumer) {
+          hasWarnedAboutUsingContextAsConsumer = true;
+          warning$1(
+            false,
+            "Rendering <Context> directly is not supported and will be removed in " +
+              "a future major release. Did you mean to render <Context.Consumer> instead?"
+          );
+        }
+      }
+    } else {
+      context = context._context;
+    }
+  }
   var newProps = workInProgress.pendingProps;
   var render = newProps.children;
 
@@ -10873,29 +12272,9 @@ function updateContextConsumer(
     newChildren,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = newProps;
   return workInProgress.child;
 }
 
-/*
-  function reuseChildrenEffects(returnFiber : Fiber, firstChild : Fiber) {
-    let child = firstChild;
-    do {
-      // Ensure that the first and last effect of the parent corresponds
-      // to the children's first and last effect.
-      if (!returnFiber.firstEffect) {
-        returnFiber.firstEffect = child.firstEffect;
-      }
-      if (child.lastEffect) {
-        if (returnFiber.lastEffect) {
-          returnFiber.lastEffect.nextEffect = child.firstEffect;
-        }
-        returnFiber.lastEffect = child.lastEffect;
-      }
-    } while (child = child.sibling);
-  }
-  */
-
 function bailoutOnAlreadyFinishedWork(
   current$$1,
   workInProgress,
@@ -10915,10 +12294,7 @@ function bailoutOnAlreadyFinishedWork(
 
   // Check if the children have any pending work.
   var childExpirationTime = workInProgress.childExpirationTime;
-  if (
-    childExpirationTime === NoWork ||
-    childExpirationTime > renderExpirationTime
-  ) {
+  if (childExpirationTime < renderExpirationTime) {
     // The children don't have any work either. We can skip them.
     // TODO: Once we add back resuming, we should check if the children are
     // a work-in-progress set. If so, we need to transfer their effects.
@@ -10931,72 +12307,98 @@ function bailoutOnAlreadyFinishedWork(
   }
 }
 
-// TODO: Delete memoizeProps/State and move to reconcile/bailout instead
-function memoizeProps(workInProgress, nextProps) {
-  workInProgress.memoizedProps = nextProps;
-}
-
-function memoizeState(workInProgress, nextState) {
-  workInProgress.memoizedState = nextState;
-  // Don't reset the updateQueue, in case there are pending updates. Resetting
-  // is handled by processUpdateQueue.
-}
-
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
-  if (
-    !hasContextChanged() &&
-    (updateExpirationTime === NoWork ||
-      updateExpirationTime > renderExpirationTime)
-  ) {
-    // This fiber does not have any pending work. Bailout without entering
-    // the begin phase. There's still some bookkeeping we that needs to be done
-    // in this optimized path, mostly pushing stuff onto the stack.
-    switch (workInProgress.tag) {
-      case HostRoot:
-        pushHostRootContext(workInProgress);
-        resetHydrationState();
-        break;
-      case HostComponent:
-        pushHostContext(workInProgress);
-        break;
-      case ClassComponent: {
-        var Component = workInProgress.type;
-        if (isContextProvider(Component)) {
-          pushContextProvider(workInProgress);
+
+  if (current$$1 !== null) {
+    var oldProps = current$$1.memoizedProps;
+    var newProps = workInProgress.pendingProps;
+    if (
+      oldProps === newProps &&
+      !hasContextChanged() &&
+      updateExpirationTime < renderExpirationTime
+    ) {
+      // This fiber does not have any pending work. Bailout without entering
+      // the begin phase. There's still some bookkeeping we that needs to be done
+      // in this optimized path, mostly pushing stuff onto the stack.
+      switch (workInProgress.tag) {
+        case HostRoot:
+          pushHostRootContext(workInProgress);
+          resetHydrationState();
+          break;
+        case HostComponent:
+          pushHostContext(workInProgress);
+          break;
+        case ClassComponent: {
+          var Component = workInProgress.type;
+          if (isContextProvider(Component)) {
+            pushContextProvider(workInProgress);
+          }
+          break;
         }
-        break;
-      }
-      case ClassComponentLazy: {
-        var thenable = workInProgress.type;
-        var _Component = getResultFromResolvedThenable(thenable);
-        if (isContextProvider(_Component)) {
-          pushContextProvider(workInProgress);
+        case HostPortal:
+          pushHostContainer(
+            workInProgress,
+            workInProgress.stateNode.containerInfo
+          );
+          break;
+        case ContextProvider: {
+          var newValue = workInProgress.memoizedProps.value;
+          pushProvider(workInProgress, newValue);
+          break;
         }
-        break;
-      }
-      case HostPortal:
-        pushHostContainer(
-          workInProgress,
-          workInProgress.stateNode.containerInfo
-        );
-        break;
-      case ContextProvider: {
-        var newValue = workInProgress.memoizedProps.value;
-        pushProvider(workInProgress, newValue);
-        break;
-      }
-      case Profiler:
-        if (enableProfilerTimer) {
-          workInProgress.effectTag |= Update;
+        case Profiler:
+          if (enableProfilerTimer) {
+            workInProgress.effectTag |= Update;
+          }
+          break;
+        case SuspenseComponent: {
+          var state = workInProgress.memoizedState;
+          var didTimeout = state !== null;
+          if (didTimeout) {
+            // If this boundary is currently timed out, we need to decide
+            // whether to retry the primary children, or to skip over it and
+            // go straight to the fallback. Check the priority of the primary
+            var primaryChildFragment = workInProgress.child;
+            var primaryChildExpirationTime =
+              primaryChildFragment.childExpirationTime;
+            if (
+              primaryChildExpirationTime !== NoWork &&
+              primaryChildExpirationTime >= renderExpirationTime
+            ) {
+              // The primary children have pending work. Use the normal path
+              // to attempt to render the primary children again.
+              return updateSuspenseComponent(
+                current$$1,
+                workInProgress,
+                renderExpirationTime
+              );
+            } else {
+              // The primary children do not have pending work with sufficient
+              // priority. Bailout.
+              var child = bailoutOnAlreadyFinishedWork(
+                current$$1,
+                workInProgress,
+                renderExpirationTime
+              );
+              if (child !== null) {
+                // The fallback children have pending work. Skip over the
+                // primary children and work on the fallback.
+                return child.sibling;
+              } else {
+                return null;
+              }
+            }
+          }
+          break;
         }
-        break;
+      }
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
     }
-    return bailoutOnAlreadyFinishedWork(
-      current$$1,
-      workInProgress,
-      renderExpirationTime
-    );
   }
 
   // Before entering the begin phase, clear the expiration time.
@@ -11004,63 +12406,53 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
 
   switch (workInProgress.tag) {
     case IndeterminateComponent: {
-      var _Component3 = workInProgress.type;
+      var elementType = workInProgress.elementType;
       return mountIndeterminateComponent(
         current$$1,
         workInProgress,
-        _Component3,
+        elementType,
         renderExpirationTime
       );
     }
-    case FunctionalComponent: {
-      var _Component4 = workInProgress.type;
-      var _unresolvedProps = workInProgress.pendingProps;
-      return updateFunctionalComponent(
+    case LazyComponent: {
+      var _elementType = workInProgress.elementType;
+      return mountLazyComponent(
         current$$1,
         workInProgress,
-        _Component4,
-        _unresolvedProps,
+        _elementType,
+        updateExpirationTime,
         renderExpirationTime
       );
     }
-    case FunctionalComponentLazy: {
-      var _thenable2 = workInProgress.type;
-      var _Component5 = getResultFromResolvedThenable(_thenable2);
-      var _unresolvedProps2 = workInProgress.pendingProps;
-      var _child = updateFunctionalComponent(
+    case FunctionComponent: {
+      var _Component = workInProgress.type;
+      var unresolvedProps = workInProgress.pendingProps;
+      var resolvedProps =
+        workInProgress.elementType === _Component
+          ? unresolvedProps
+          : resolveDefaultProps(_Component, unresolvedProps);
+      return updateFunctionComponent(
         current$$1,
         workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, _unresolvedProps2),
+        _Component,
+        resolvedProps,
         renderExpirationTime
       );
-      workInProgress.memoizedProps = _unresolvedProps2;
-      return _child;
     }
     case ClassComponent: {
-      var _Component6 = workInProgress.type;
-      var _unresolvedProps3 = workInProgress.pendingProps;
+      var _Component2 = workInProgress.type;
+      var _unresolvedProps = workInProgress.pendingProps;
+      var _resolvedProps =
+        workInProgress.elementType === _Component2
+          ? _unresolvedProps
+          : resolveDefaultProps(_Component2, _unresolvedProps);
       return updateClassComponent(
         current$$1,
         workInProgress,
-        _Component6,
-        _unresolvedProps3,
-        renderExpirationTime
-      );
-    }
-    case ClassComponentLazy: {
-      var _thenable3 = workInProgress.type;
-      var _Component7 = getResultFromResolvedThenable(_thenable3);
-      var _unresolvedProps4 = workInProgress.pendingProps;
-      var _child2 = updateClassComponent(
-        current$$1,
-        workInProgress,
-        _Component7,
-        resolveDefaultProps(_Component7, _unresolvedProps4),
+        _Component2,
+        _resolvedProps,
         renderExpirationTime
       );
-      workInProgress.memoizedProps = _unresolvedProps4;
-      return _child2;
     }
     case HostRoot:
       return updateHostRoot(current$$1, workInProgress, renderExpirationTime);
@@ -11072,8 +12464,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
     case HostText:
       return updateHostText(current$$1, workInProgress);
-    case PlaceholderComponent:
-      return updatePlaceholderComponent(
+    case SuspenseComponent:
+      return updateSuspenseComponent(
         current$$1,
         workInProgress,
         renderExpirationTime
@@ -11086,27 +12478,19 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
     case ForwardRef: {
       var type = workInProgress.type;
+      var _unresolvedProps2 = workInProgress.pendingProps;
+      var _resolvedProps2 =
+        workInProgress.elementType === type
+          ? _unresolvedProps2
+          : resolveDefaultProps(type, _unresolvedProps2);
       return updateForwardRef(
         current$$1,
         workInProgress,
         type,
-        workInProgress.pendingProps,
+        _resolvedProps2,
         renderExpirationTime
       );
     }
-    case ForwardRefLazy:
-      var _thenable = workInProgress.type;
-      var _Component2 = getResultFromResolvedThenable(_thenable);
-      var unresolvedProps = workInProgress.pendingProps;
-      var child = updateForwardRef(
-        current$$1,
-        workInProgress,
-        _Component2,
-        resolveDefaultProps(_Component2, unresolvedProps),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = unresolvedProps;
-      return child;
     case Fragment:
       return updateFragment(current$$1, workInProgress, renderExpirationTime);
     case Mode:
@@ -11125,6 +12509,60 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
         workInProgress,
         renderExpirationTime
       );
+    case MemoComponent: {
+      var _type2 = workInProgress.type;
+      var _unresolvedProps3 = workInProgress.pendingProps;
+      // Resolve outer props first, then resolve inner props.
+      var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3);
+      {
+        if (workInProgress.type !== workInProgress.elementType) {
+          var outerPropTypes = _type2.propTypes;
+          if (outerPropTypes) {
+            checkPropTypes(
+              outerPropTypes,
+              _resolvedProps3, // Resolved for outer only
+              "prop",
+              getComponentName(_type2),
+              getCurrentFiberStackInDev
+            );
+          }
+        }
+      }
+      _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3);
+      return updateMemoComponent(
+        current$$1,
+        workInProgress,
+        _type2,
+        _resolvedProps3,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    case SimpleMemoComponent: {
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    case IncompleteClassComponent: {
+      var _Component3 = workInProgress.type;
+      var _unresolvedProps4 = workInProgress.pendingProps;
+      var _resolvedProps4 =
+        workInProgress.elementType === _Component3
+          ? _unresolvedProps4
+          : resolveDefaultProps(_Component3, _unresolvedProps4);
+      return mountIncompleteClassComponent(
+        current$$1,
+        workInProgress,
+        _Component3,
+        _resolvedProps4,
+        renderExpirationTime
+      );
+    }
     default:
       invariant(
         false,
@@ -11144,42 +12582,48 @@ function markRef$1(workInProgress) {
   workInProgress.effectTag |= Ref;
 }
 
-function appendAllChildren(parent, workInProgress) {
-  // We only have the top Fiber that was created but we need recurse down its
-  // children to find all the terminal nodes.
-  var node = workInProgress.child;
-  while (node !== null) {
-    if (node.tag === HostComponent || node.tag === HostText) {
-      appendInitialChild(parent, node.stateNode);
-    } else if (node.tag === HostPortal) {
-      // If we have a portal child, then we don't want to traverse
-      // down its children. Instead, we'll get insertions from each child in
-      // the portal directly.
-    } else if (node.child !== null) {
-      node.child.return = node;
-      node = node.child;
-      continue;
-    }
-    if (node === workInProgress) {
-      return;
-    }
-    while (node.sibling === null) {
-      if (node.return === null || node.return === workInProgress) {
-        return;
-      }
-      node = node.return;
-    }
-    node.sibling.return = node.return;
-    node = node.sibling;
-  }
-}
-
+var appendAllChildren = void 0;
 var updateHostContainer = void 0;
 var updateHostComponent$1 = void 0;
 var updateHostText$1 = void 0;
 if (supportsMutation) {
   // Mutation mode
 
+  appendAllChildren = function(
+    parent,
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
+  ) {
+    // We only have the top Fiber that was created but we need recurse down its
+    // children to find all the terminal nodes.
+    var node = workInProgress.child;
+    while (node !== null) {
+      if (node.tag === HostComponent || node.tag === HostText) {
+        appendInitialChild(parent, node.stateNode);
+      } else if (node.tag === HostPortal) {
+        // If we have a portal child, then we don't want to traverse
+        // down its children. Instead, we'll get insertions from each child in
+        // the portal directly.
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      if (node === workInProgress) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  };
+
   updateHostContainer = function(workInProgress) {
     // Noop
   };
@@ -11230,29 +12674,205 @@ if (supportsMutation) {
       markUpdate(workInProgress);
     }
   };
-} else if (supportsPersistence) {
-  // Persistent host tree mode
+} else if (supportsPersistence) {
+  // Persistent host tree mode
+
+  appendAllChildren = function(
+    parent,
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
+  ) {
+    // We only have the top Fiber that was created but we need recurse down its
+    // children to find all the terminal nodes.
+    var node = workInProgress.child;
+    while (node !== null) {
+      // eslint-disable-next-line no-labels
+      branches: if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var props = node.memoizedProps;
+          var type = node.type;
+          if (isHidden) {
+            // This child is inside a timed out tree. Hide it.
+            instance = cloneHiddenInstance(instance, type, props, node);
+          } else {
+            // This child was previously inside a timed out tree. If it was not
+            // updated during this render, it may need to be unhidden. Clone
+            // again to be sure.
+            instance = cloneUnhiddenInstance(instance, type, props, node);
+          }
+          node.stateNode = instance;
+        }
+        appendInitialChild(parent, instance);
+      } else if (node.tag === HostText) {
+        var _instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var text = node.memoizedProps;
+          var rootContainerInstance = getRootHostContainer();
+          var currentHostContext = getHostContext();
+          if (isHidden) {
+            _instance = createHiddenTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          } else {
+            _instance = createTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          }
+          node.stateNode = _instance;
+        }
+        appendInitialChild(parent, _instance);
+      } else if (node.tag === HostPortal) {
+        // If we have a portal child, then we don't want to traverse
+        // down its children. Instead, we'll get insertions from each child in
+        // the portal directly.
+      } else if (node.tag === SuspenseComponent) {
+        var current = node.alternate;
+        if (current !== null) {
+          var oldState = current.memoizedState;
+          var newState = node.memoizedState;
+          var oldIsHidden = oldState !== null;
+          var newIsHidden = newState !== null;
+          if (oldIsHidden !== newIsHidden) {
+            // The placeholder either just timed out or switched back to the normal
+            // children after having previously timed out. Toggle the visibility of
+            // the direct host children.
+            var primaryChildParent = newIsHidden ? node.child : node;
+            if (primaryChildParent !== null) {
+              appendAllChildren(parent, primaryChildParent, true, newIsHidden);
+            }
+            // eslint-disable-next-line no-labels
+            break branches;
+          }
+        }
+        if (node.child !== null) {
+          // Continue traversing like normal
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      // $FlowFixMe This is correct but Flow is confused by the labeled break.
+      node = node;
+      if (node === workInProgress) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  };
 
   // An unfortunate fork of appendAllChildren because we have two different parent types.
   var appendAllChildrenToContainer = function(
     containerChildSet,
-    workInProgress
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
   ) {
     // We only have the top Fiber that was created but we need recurse down its
     // children to find all the terminal nodes.
     var node = workInProgress.child;
     while (node !== null) {
-      if (node.tag === HostComponent || node.tag === HostText) {
-        appendChildToContainerChildSet(containerChildSet, node.stateNode);
+      // eslint-disable-next-line no-labels
+      branches: if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var props = node.memoizedProps;
+          var type = node.type;
+          if (isHidden) {
+            // This child is inside a timed out tree. Hide it.
+            instance = cloneHiddenInstance(instance, type, props, node);
+          } else {
+            // This child was previously inside a timed out tree. If it was not
+            // updated during this render, it may need to be unhidden. Clone
+            // again to be sure.
+            instance = cloneUnhiddenInstance(instance, type, props, node);
+          }
+          node.stateNode = instance;
+        }
+        appendChildToContainerChildSet(containerChildSet, instance);
+      } else if (node.tag === HostText) {
+        var _instance2 = node.stateNode;
+        if (needsVisibilityToggle) {
+          var text = node.memoizedProps;
+          var rootContainerInstance = getRootHostContainer();
+          var currentHostContext = getHostContext();
+          if (isHidden) {
+            _instance2 = createHiddenTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          } else {
+            _instance2 = createTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          }
+          node.stateNode = _instance2;
+        }
+        appendChildToContainerChildSet(containerChildSet, _instance2);
       } else if (node.tag === HostPortal) {
         // If we have a portal child, then we don't want to traverse
         // down its children. Instead, we'll get insertions from each child in
         // the portal directly.
+      } else if (node.tag === SuspenseComponent) {
+        var current = node.alternate;
+        if (current !== null) {
+          var oldState = current.memoizedState;
+          var newState = node.memoizedState;
+          var oldIsHidden = oldState !== null;
+          var newIsHidden = newState !== null;
+          if (oldIsHidden !== newIsHidden) {
+            // The placeholder either just timed out or switched back to the normal
+            // children after having previously timed out. Toggle the visibility of
+            // the direct host children.
+            var primaryChildParent = newIsHidden ? node.child : node;
+            if (primaryChildParent !== null) {
+              appendAllChildrenToContainer(
+                containerChildSet,
+                primaryChildParent,
+                true,
+                newIsHidden
+              );
+            }
+            // eslint-disable-next-line no-labels
+            break branches;
+          }
+        }
+        if (node.child !== null) {
+          // Continue traversing like normal
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
       } else if (node.child !== null) {
         node.child.return = node;
         node = node.child;
         continue;
       }
+      // $FlowFixMe This is correct but Flow is confused by the labeled break.
+      node = node;
       if (node === workInProgress) {
         return;
       }
@@ -11275,7 +12895,7 @@ if (supportsMutation) {
       var container = portalOrRoot.containerInfo;
       var newChildSet = createContainerChildSet(container);
       // If children might have changed, we have to add them all to the set.
-      appendAllChildrenToContainer(newChildSet, workInProgress);
+      appendAllChildrenToContainer(newChildSet, workInProgress, false, false);
       portalOrRoot.pendingChildren = newChildSet;
       // Schedule an update on the container to swap out the container.
       markUpdate(workInProgress);
@@ -11348,7 +12968,7 @@ if (supportsMutation) {
       markUpdate(workInProgress);
     } else {
       // If children might have changed, we have to add them all to the set.
-      appendAllChildren(newInstance, workInProgress);
+      appendAllChildren(newInstance, workInProgress, false, false);
     }
   };
   updateHostText$1 = function(current, workInProgress, oldText, newText) {
@@ -11390,8 +13010,12 @@ function completeWork(current, workInProgress, renderExpirationTime) {
   var newProps = workInProgress.pendingProps;
 
   switch (workInProgress.tag) {
-    case FunctionalComponent:
-    case FunctionalComponentLazy:
+    case IndeterminateComponent:
+      break;
+    case LazyComponent:
+      break;
+    case SimpleMemoComponent:
+    case FunctionComponent:
       break;
     case ClassComponent: {
       var Component = workInProgress.type;
@@ -11400,13 +13024,6 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
       break;
     }
-    case ClassComponentLazy: {
-      var _Component = getResultFromResolvedThenable(workInProgress.type);
-      if (isContextProvider(_Component)) {
-        popContext(workInProgress);
-      }
-      break;
-    }
     case HostRoot: {
       popHostContainer(workInProgress);
       popTopLevelContextObject(workInProgress);
@@ -11482,7 +13099,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
             workInProgress
           );
 
-          appendAllChildren(instance, workInProgress);
+          appendAllChildren(instance, workInProgress, false, false);
 
           // Certain renderers require commit-time effects for initial mount.
           // (eg DOM renderer supports auto-focus for certain elements).
@@ -11543,10 +13160,54 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       break;
     }
     case ForwardRef:
-    case ForwardRefLazy:
       break;
-    case PlaceholderComponent:
+    case SuspenseComponent: {
+      var nextState = workInProgress.memoizedState;
+      if ((workInProgress.effectTag & DidCapture) !== NoEffect) {
+        // Something suspended. Re-render with the fallback children.
+        workInProgress.expirationTime = renderExpirationTime;
+        // Do not reset the effect list.
+        return workInProgress;
+      }
+
+      var nextDidTimeout = nextState !== null;
+      var prevDidTimeout = current !== null && current.memoizedState !== null;
+
+      if (current !== null && !nextDidTimeout && prevDidTimeout) {
+        // We just switched from the fallback to the normal children. Delete
+        // the fallback.
+        // TODO: Would it be better to store the fallback fragment on
+        var currentFallbackChild = current.child.sibling;
+        if (currentFallbackChild !== null) {
+          // Deletions go at the beginning of the return fiber's effect list
+          var first = workInProgress.firstEffect;
+          if (first !== null) {
+            workInProgress.firstEffect = currentFallbackChild;
+            currentFallbackChild.nextEffect = first;
+          } else {
+            workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChild;
+            currentFallbackChild.nextEffect = null;
+          }
+          currentFallbackChild.effectTag = Deletion;
+        }
+      }
+
+      // The children either timed out after previously being visible, or
+      // were restored after previously being hidden. Schedule an effect
+      // to update their visiblity.
+      if (
+        //
+        nextDidTimeout !== prevDidTimeout ||
+        // Outside concurrent mode, the primary children commit in an
+        // inconsistent state, even if they are hidden. So if they are hidden,
+        // we need to schedule an effect to re-hide them, just in case.
+        ((workInProgress.effectTag & ConcurrentMode) === NoContext &&
+          nextDidTimeout)
+      ) {
+        workInProgress.effectTag |= Update;
+      }
       break;
+    }
     case Fragment:
       break;
     case Mode:
@@ -11563,15 +13224,17 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       break;
     case ContextConsumer:
       break;
-    // Error cases
-    case IndeterminateComponent:
-      invariant(
-        false,
-        "An indeterminate component should have become determinate before " +
-          "completing. This error is likely caused by a bug in React. Please " +
-          "file an issue."
-      );
-    // eslint-disable-next-line no-fallthrough
+    case MemoComponent:
+      break;
+    case IncompleteClassComponent: {
+      // Same as class component case. I put it down here so that the tags are
+      // sequential to ensure this switch is compiled to a jump table.
+      var _Component = workInProgress.type;
+      if (isContextProvider(_Component)) {
+        popContext(workInProgress);
+      }
+      break;
+    }
     default:
       invariant(
         false,
@@ -11583,6 +13246,17 @@ function completeWork(current, workInProgress, renderExpirationTime) {
   return null;
 }
 
+function shouldCaptureSuspense(current, workInProgress) {
+  // In order to capture, the Suspense component must have a fallback prop.
+  if (workInProgress.memoizedProps.fallback === undefined) {
+    return false;
+  }
+  // If it was the primary children that just suspended, capture and render the
+  // fallback. Otherwise, don't capture and bubble to the next boundary.
+  var nextState = workInProgress.memoizedState;
+  return nextState === null;
+}
+
 // Module provided by RN:
 /**
  * Intercept lifecycle errors and ensure they are shown with the correct stack
@@ -11699,8 +13373,6 @@ function logCapturedError(capturedError) {
   }
 }
 
-var emptyObject$1 = {};
-
 var didWarnAboutUndefinedSnapshotBeforeUpdate = null;
 {
   didWarnAboutUndefinedSnapshotBeforeUpdate = new Set();
@@ -11785,19 +13457,69 @@ function safelyDetachRef(current$$1) {
   }
 }
 
+function safelyCallDestroy(current$$1, destroy) {
+  {
+    invokeGuardedCallback(null, destroy, null);
+    if (hasCaughtError()) {
+      var error = clearCaughtError();
+      captureCommitPhaseError(current$$1, error);
+    }
+  }
+}
+
 function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent: {
+      commitHookEffectList(UnmountSnapshot, NoEffect$1, finishedWork);
+      return;
+    }
+    case ClassComponent: {
       if (finishedWork.effectTag & Snapshot) {
         if (current$$1 !== null) {
           var prevProps = current$$1.memoizedProps;
           var prevState = current$$1.memoizedState;
           startPhaseTimer(finishedWork, "getSnapshotBeforeUpdate");
           var instance = finishedWork.stateNode;
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
-          var snapshot = instance.getSnapshotBeforeUpdate(prevProps, prevState);
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "getSnapshotBeforeUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "getSnapshotBeforeUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
+          var snapshot = instance.getSnapshotBeforeUpdate(
+            finishedWork.elementType === finishedWork.type
+              ? prevProps
+              : resolveDefaultProps(finishedWork.type, prevProps),
+            prevState
+          );
           {
             var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate;
             if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) {
@@ -11820,6 +13542,7 @@ function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
     case HostComponent:
     case HostText:
     case HostPortal:
+    case IncompleteClassComponent:
       // Nothing to do for these component types
       return;
     default: {
@@ -11832,6 +13555,66 @@ function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
   }
 }
 
+function commitHookEffectList(unmountTag, mountTag, finishedWork) {
+  if (!enableHooks) {
+    return;
+  }
+  var updateQueue = finishedWork.updateQueue;
+  var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+  if (lastEffect !== null) {
+    var firstEffect = lastEffect.next;
+    var effect = firstEffect;
+    do {
+      if ((effect.tag & unmountTag) !== NoEffect$1) {
+        // Unmount
+        var destroy = effect.destroy;
+        effect.destroy = null;
+        if (destroy !== null) {
+          destroy();
+        }
+      }
+      if ((effect.tag & mountTag) !== NoEffect$1) {
+        // Mount
+        var create = effect.create;
+        var _destroy = create();
+        if (typeof _destroy !== "function") {
+          {
+            if (_destroy !== null && _destroy !== undefined) {
+              warningWithoutStack$1(
+                false,
+                "useEffect function must return a cleanup function or " +
+                  "nothing.%s%s",
+                typeof _destroy.then === "function"
+                  ? "\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. " +
+                    "Instead, you may write an async function separately " +
+                    "and then call it from inside the effect:\n\n" +
+                    "async function fetchComment(commentId) {\n" +
+                    "  // You can await here\n" +
+                    "}\n\n" +
+                    "useEffect(() => {\n" +
+                    "  fetchComment(commentId);\n" +
+                    "}, [commentId]);\n\n" +
+                    "In the future, React will provide a more idiomatic solution for data fetching " +
+                    "that doesn't involve writing effects manually."
+                  : "",
+                getStackByFiberInDevAndProd(finishedWork)
+              );
+            }
+          }
+          _destroy = null;
+        }
+        effect.destroy = _destroy;
+      }
+      effect = effect.next;
+    } while (effect !== firstEffect);
+  }
+}
+
+function commitPassiveHookEffects(finishedWork) {
+  commitHookEffectList(UnmountPassive, NoEffect$1, finishedWork);
+  commitHookEffectList(NoEffect$1, MountPassive, finishedWork);
+}
+
 function commitLifeCycles(
   finishedRoot,
   current$$1,
@@ -11839,22 +13622,93 @@ function commitLifeCycles(
   committedExpirationTime
 ) {
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent: {
+      commitHookEffectList(UnmountLayout, MountLayout, finishedWork);
+      break;
+    }
+    case ClassComponent: {
       var instance = finishedWork.stateNode;
       if (finishedWork.effectTag & Update) {
         if (current$$1 === null) {
           startPhaseTimer(finishedWork, "componentDidMount");
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "componentDidMount. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "componentDidMount. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
           instance.componentDidMount();
           stopPhaseTimer();
         } else {
-          var prevProps = current$$1.memoizedProps;
+          var prevProps =
+            finishedWork.elementType === finishedWork.type
+              ? current$$1.memoizedProps
+              : resolveDefaultProps(
+                  finishedWork.type,
+                  current$$1.memoizedProps
+                );
           var prevState = current$$1.memoizedState;
           startPhaseTimer(finishedWork, "componentDidUpdate");
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "componentDidUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "componentDidUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
           instance.componentDidUpdate(
             prevProps,
             prevState,
@@ -11865,8 +13719,38 @@ function commitLifeCycles(
       }
       var updateQueue = finishedWork.updateQueue;
       if (updateQueue !== null) {
-        instance.props = finishedWork.memoizedProps;
-        instance.state = finishedWork.memoizedState;
+        {
+          if (
+            finishedWork.type === finishedWork.elementType &&
+            !didWarnAboutReassigningProps
+          ) {
+            !(instance.props === finishedWork.memoizedProps)
+              ? warning$1(
+                  false,
+                  "Expected %s props to match memoized props before " +
+                    "processing the update queue. " +
+                    "This might either be because of a bug in React, or because " +
+                    "a component reassigns its own `this.props`. " +
+                    "Please file an issue.",
+                  getComponentName(finishedWork.type) || "instance"
+                )
+              : void 0;
+            !(instance.state === finishedWork.memoizedState)
+              ? warning$1(
+                  false,
+                  "Expected %s state to match memoized state before " +
+                    "processing the update queue. " +
+                    "This might either be because of a bug in React, or because " +
+                    "a component reassigns its own `this.props`. " +
+                    "Please file an issue.",
+                  getComponentName(finishedWork.type) || "instance"
+                )
+              : void 0;
+          }
+        }
+        // We could update instance props and state here,
+        // but instead we rely on them being set during last render.
+        // TODO: revisit this when we implement resuming.
         commitUpdateQueue(
           finishedWork,
           updateQueue,
@@ -11886,7 +13770,6 @@ function commitLifeCycles(
               _instance = getPublicInstance(finishedWork.child.stateNode);
               break;
             case ClassComponent:
-            case ClassComponentLazy:
               _instance = finishedWork.child.stateNode;
               break;
           }
@@ -11927,7 +13810,7 @@ function commitLifeCycles(
       if (enableProfilerTimer) {
         var onRender = finishedWork.memoizedProps.onRender;
 
-        if (enableSchedulerTracking) {
+        if (enableSchedulerTracing) {
           onRender(
             finishedWork.memoizedProps.id,
             current$$1 === null ? "mount" : "update",
@@ -11950,25 +13833,10 @@ function commitLifeCycles(
       }
       return;
     }
-    case PlaceholderComponent: {
-      if (enableSuspense) {
-        if ((finishedWork.mode & StrictMode) === NoEffect) {
-          // In loose mode, a placeholder times out by scheduling a synchronous
-          // update in the commit phase. Use `updateQueue` field to signal that
-          // the Timeout needs to switch to the placeholder. We don't need an
-          // entire queue. Any non-null value works.
-          // $FlowFixMe - Intentionally using a value other than an UpdateQueue.
-          finishedWork.updateQueue = emptyObject$1;
-          scheduleWork(finishedWork, Sync);
-        } else {
-          // In strict mode, the Update effect is used to record the time at
-          // which the placeholder timed out.
-          var currentTime = requestCurrentTime();
-          finishedWork.stateNode = { timedOutAt: currentTime };
-        }
-      }
-      return;
-    }
+    case SuspenseComponent:
+      break;
+    case IncompleteClassComponent:
+      break;
     default: {
       invariant(
         false,
@@ -11979,6 +13847,54 @@ function commitLifeCycles(
   }
 }
 
+function hideOrUnhideAllChildren(finishedWork, isHidden) {
+  if (supportsMutation) {
+    // We only have the top Fiber that was inserted but we need recurse down its
+    var node = finishedWork;
+    while (true) {
+      if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (isHidden) {
+          hideInstance(instance);
+        } else {
+          unhideInstance(node.stateNode, node.memoizedProps);
+        }
+      } else if (node.tag === HostText) {
+        var _instance3 = node.stateNode;
+        if (isHidden) {
+          hideTextInstance(_instance3);
+        } else {
+          unhideTextInstance(_instance3, node.memoizedProps);
+        }
+      } else if (
+        node.tag === SuspenseComponent &&
+        node.memoizedState !== null
+      ) {
+        // Found a nested Suspense component that timed out. Skip over the
+        var fallbackChildFragment = node.child.sibling;
+        fallbackChildFragment.return = node;
+        node = fallbackChildFragment;
+        continue;
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      if (node === finishedWork) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === finishedWork) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+}
+
 function commitAttachRef(finishedWork) {
   var ref = finishedWork.ref;
   if (ref !== null) {
@@ -12029,8 +13945,28 @@ function commitUnmount(current$$1) {
   onCommitUnmount(current$$1);
 
   switch (current$$1.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent: {
+      var updateQueue = current$$1.updateQueue;
+      if (updateQueue !== null) {
+        var lastEffect = updateQueue.lastEffect;
+        if (lastEffect !== null) {
+          var firstEffect = lastEffect.next;
+          var effect = firstEffect;
+          do {
+            var destroy = effect.destroy;
+            if (destroy !== null) {
+              safelyCallDestroy(current$$1, destroy);
+            }
+            effect = effect.next;
+          } while (effect !== firstEffect);
+        }
+      }
+      break;
+    }
+    case ClassComponent: {
       safelyDetachRef(current$$1);
       var instance = current$$1.stateNode;
       if (typeof instance.componentWillUnmount === "function") {
@@ -12098,9 +14034,14 @@ function detachFiber(current$$1) {
   // itself will be GC:ed when the parent updates the next time.
   current$$1.return = null;
   current$$1.child = null;
-  if (current$$1.alternate) {
-    current$$1.alternate.child = null;
-    current$$1.alternate.return = null;
+  current$$1.memoizedState = null;
+  current$$1.updateQueue = null;
+  var alternate = current$$1.alternate;
+  if (alternate !== null) {
+    alternate.return = null;
+    alternate.child = null;
+    alternate.memoizedState = null;
+    alternate.updateQueue = null;
   }
 }
 
@@ -12121,8 +14062,7 @@ function commitContainer(finishedWork) {
   }
 
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case ClassComponent: {
       return;
     }
     case HostComponent: {
@@ -12397,13 +14337,33 @@ function commitDeletion(current$$1) {
 
 function commitWork(current$$1, finishedWork) {
   if (!supportsMutation) {
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case MemoComponent:
+      case SimpleMemoComponent: {
+        // Note: We currently never use MountMutation, but useLayout uses
+        // UnmountMutation.
+        commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
+        return;
+      }
+    }
+
     commitContainer(finishedWork);
     return;
   }
 
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent: {
+      // Note: We currently never use MountMutation, but useLayout uses
+      // UnmountMutation.
+      commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
+      return;
+    }
+    case ClassComponent: {
       return;
     }
     case HostComponent: {
@@ -12454,7 +14414,30 @@ function commitWork(current$$1, finishedWork) {
     case Profiler: {
       return;
     }
-    case PlaceholderComponent: {
+    case SuspenseComponent: {
+      var newState = finishedWork.memoizedState;
+
+      var newDidTimeout = void 0;
+      var primaryChildParent = finishedWork;
+      if (newState === null) {
+        newDidTimeout = false;
+      } else {
+        newDidTimeout = true;
+        primaryChildParent = finishedWork.child;
+        if (newState.timedOutAt === NoWork) {
+          // If the children had not already timed out, record the time.
+          // This is used to compute the elapsed time during subsequent
+          // attempts to render the children.
+          newState.timedOutAt = requestCurrentTime();
+        }
+      }
+
+      if (primaryChildParent !== null) {
+        hideOrUnhideAllChildren(primaryChildParent, newDidTimeout);
+      }
+      return;
+    }
+    case IncompleteClassComponent: {
       return;
     }
     default: {
@@ -12474,10 +14457,6 @@ function commitResetTextContent(current$$1) {
   resetTextContent(current$$1.stateNode);
 }
 
-function NoopComponent() {
-  return null;
-}
-
 function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
   var update = createUpdate(expirationTime);
   // Unmount the root by rendering null.
@@ -12496,28 +14475,22 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   var update = createUpdate(expirationTime);
   update.tag = CaptureUpdate;
-  var getDerivedStateFromCatch = fiber.type.getDerivedStateFromCatch;
-  if (
-    enableGetDerivedStateFromCatch &&
-    typeof getDerivedStateFromCatch === "function"
-  ) {
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if (typeof getDerivedStateFromError === "function") {
     var error = errorInfo.value;
     update.payload = function() {
-      return getDerivedStateFromCatch(error);
+      return getDerivedStateFromError(error);
     };
   }
 
   var inst = fiber.stateNode;
   if (inst !== null && typeof inst.componentDidCatch === "function") {
     update.callback = function callback() {
-      if (
-        !enableGetDerivedStateFromCatch ||
-        getDerivedStateFromCatch !== "function"
-      ) {
+      if (typeof getDerivedStateFromError !== "function") {
         // To preserve the preexisting retry behavior of error boundaries,
         // we keep track of which ones already failed during this batch.
         // This gets reset before we yield back to the browser.
-        // TODO: Warn in strict mode if getDerivedStateFromCatch is
+        // TODO: Warn in strict mode if getDerivedStateFromError is
         // not defined.
         markLegacyErrorBoundaryAsFailed(this);
       }
@@ -12527,6 +14500,21 @@ function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
       this.componentDidCatch(error, {
         componentStack: stack !== null ? stack : ""
       });
+      {
+        if (typeof getDerivedStateFromError !== "function") {
+          // If componentDidCatch is the only error boundary method defined,
+          // then it needs to call setState to recover from errors.
+          // If no state update is scheduled then the boundary will swallow the error.
+          !(fiber.expirationTime === Sync)
+            ? warningWithoutStack$1(
+                false,
+                "%s: Error boundaries should implement getDerivedStateFromError(). " +
+                  "In that method, return a state update to display an error message or fallback UI.",
+                getComponentName(fiber.type) || "Unknown"
+              )
+            : void 0;
+        }
+      }
     };
   }
   return update;
@@ -12545,7 +14533,6 @@ function throwException(
   sourceFiber.firstEffect = sourceFiber.lastEffect = null;
 
   if (
-    enableSuspense &&
     value !== null &&
     typeof value === "object" &&
     typeof value.then === "function"
@@ -12562,25 +14549,20 @@ function throwException(
     var earliestTimeoutMs = -1;
     var startTimeMs = -1;
     do {
-      if (_workInProgress.tag === PlaceholderComponent) {
-        var current = _workInProgress.alternate;
-        if (
-          current !== null &&
-          current.memoizedState === true &&
-          current.stateNode !== null
-        ) {
-          // Reached a placeholder that already timed out. Each timed out
-          // placeholder acts as the root of a new suspense boundary.
-
-          // Use the time at which the placeholder timed out as the start time
-          // for the current render.
-          var timedOutAt = current.stateNode.timedOutAt;
-          startTimeMs = expirationTimeToMs(timedOutAt);
-
-          // Do not search any further.
-          break;
+      if (_workInProgress.tag === SuspenseComponent) {
+        var current$$1 = _workInProgress.alternate;
+        if (current$$1 !== null) {
+          var currentState = current$$1.memoizedState;
+          if (currentState !== null) {
+            // Reached a boundary that already timed out. Do not search
+            // any further.
+            var timedOutAt = currentState.timedOutAt;
+            startTimeMs = expirationTimeToMs(timedOutAt);
+            // Do not search any further.
+            break;
+          }
         }
-        var timeoutPropMs = _workInProgress.pendingProps.delayMs;
+        var timeoutPropMs = _workInProgress.pendingProps.maxDuration;
         if (typeof timeoutPropMs === "number") {
           if (timeoutPropMs <= 0) {
             earliestTimeoutMs = 0;
@@ -12595,129 +14577,124 @@ function throwException(
       _workInProgress = _workInProgress.return;
     } while (_workInProgress !== null);
 
-    // Schedule the nearest Placeholder to re-render the timed out view.
+    // Schedule the nearest Suspense to re-render the timed out view.
     _workInProgress = returnFiber;
     do {
-      if (_workInProgress.tag === PlaceholderComponent) {
-        var didTimeout = _workInProgress.memoizedState;
-        if (!didTimeout) {
-          // Found the nearest boundary.
-
-          // If the boundary is not in async mode, we should not suspend, and
-          // likewise, when the promise resolves, we should ping synchronously.
-          var pingTime =
-            (_workInProgress.mode & AsyncMode) === NoEffect
-              ? Sync
-              : renderExpirationTime;
-
-          // Attach a listener to the promise to "ping" the root and retry.
-          var onResolveOrReject = retrySuspendedRoot.bind(
-            null,
-            root,
-            _workInProgress,
-            pingTime
-          );
-          thenable.then(onResolveOrReject, onResolveOrReject);
-
-          // If the boundary is outside of strict mode, we should *not* suspend
-          // the commit. Pretend as if the suspended component rendered null and
-          // keep rendering. In the commit phase, we'll schedule a subsequent
-          // synchronous update to re-render the Placeholder.
-          //
-          // Note: It doesn't matter whether the component that suspended was
-          // inside a strict mode tree. If the Placeholder is outside of it, we
-          // should *not* suspend the commit.
-          if ((_workInProgress.mode & StrictMode) === NoEffect) {
-            _workInProgress.effectTag |= Update;
-
-            // Unmount the source fiber's children
-            var nextChildren = null;
-            reconcileChildren(
-              sourceFiber.alternate,
-              sourceFiber,
-              nextChildren,
-              renderExpirationTime
-            );
-            sourceFiber.effectTag &= ~Incomplete;
-            if (sourceFiber.tag === IndeterminateComponent) {
-              // Let's just assume it's a functional component. This fiber will
-              // be unmounted in the immediate next commit, anyway.
-              sourceFiber.tag = FunctionalComponent;
+      if (
+        _workInProgress.tag === SuspenseComponent &&
+        shouldCaptureSuspense(_workInProgress.alternate, _workInProgress)
+      ) {
+        // Found the nearest boundary.
+
+        // If the boundary is not in concurrent mode, we should not suspend, and
+        // likewise, when the promise resolves, we should ping synchronously.
+        var pingTime =
+          (_workInProgress.mode & ConcurrentMode) === NoEffect
+            ? Sync
+            : renderExpirationTime;
+
+        // Attach a listener to the promise to "ping" the root and retry.
+        var onResolveOrReject = retrySuspendedRoot.bind(
+          null,
+          root,
+          _workInProgress,
+          sourceFiber,
+          pingTime
+        );
+        if (enableSchedulerTracing) {
+          onResolveOrReject = tracing.unstable_wrap(onResolveOrReject);
+        }
+        thenable.then(onResolveOrReject, onResolveOrReject);
+
+        // If the boundary is outside of concurrent mode, we should *not*
+        // suspend the commit. Pretend as if the suspended component rendered
+        // null and keep rendering. In the commit phase, we'll schedule a
+        // subsequent synchronous update to re-render the Suspense.
+        //
+        // Note: It doesn't matter whether the component that suspended was
+        // inside a concurrent mode tree. If the Suspense is outside of it, we
+        // should *not* suspend the commit.
+        if ((_workInProgress.mode & ConcurrentMode) === NoEffect) {
+          _workInProgress.effectTag |= DidCapture;
+
+          // We're going to commit this fiber even though it didn't complete.
+          // But we shouldn't call any lifecycle methods or callbacks. Remove
+          // all lifecycle effect tags.
+          sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);
+
+          if (sourceFiber.tag === ClassComponent) {
+            var _current = sourceFiber.alternate;
+            if (_current === null) {
+              // This is a new mount. Change the tag so it's not mistaken for a
+              // completed class component. For example, we should not call
+              // componentWillUnmount if it is deleted.
+              sourceFiber.tag = IncompleteClassComponent;
             }
+          }
 
-            if (
-              sourceFiber.tag === ClassComponent ||
-              sourceFiber.tag === ClassComponentLazy
-            ) {
-              // We're going to commit this fiber even though it didn't
-              // complete. But we shouldn't call any lifecycle methods or
-              // callbacks. Remove all lifecycle effect tags.
-              sourceFiber.effectTag &= ~LifecycleEffectMask;
-              if (sourceFiber.alternate === null) {
-                // We're about to mount a class component that doesn't have an
-                // instance. Turn this into a dummy functional component instead,
-                // to prevent type errors. This is a bit weird but it's an edge
-                // case and we're about to synchronously delete this
-                // component, anyway.
-                sourceFiber.tag = FunctionalComponent;
-                sourceFiber.type = NoopComponent;
-              }
-            }
+          // The source fiber did not complete. Mark it with the current
+          // render priority to indicate that it still has pending work.
+          sourceFiber.expirationTime = renderExpirationTime;
 
-            // Exit without suspending.
-            return;
-          }
+          // Exit without suspending.
+          return;
+        }
 
-          // Confirmed that the boundary is in a strict mode tree. Continue with
-          // the normal suspend path.
+        // Confirmed that the boundary is in a concurrent mode tree. Continue
+        // with the normal suspend path.
 
-          var absoluteTimeoutMs = void 0;
-          if (earliestTimeoutMs === -1) {
-            // If no explicit threshold is given, default to an abitrarily large
-            // value. The actual size doesn't matter because the threshold for the
-            // whole tree will be clamped to the expiration time.
-            absoluteTimeoutMs = maxSigned31BitInt;
-          } else {
-            if (startTimeMs === -1) {
-              // This suspend happened outside of any already timed-out
-              // placeholders. We don't know exactly when the update was scheduled,
-              // but we can infer an approximate start time from the expiration
-              // time. First, find the earliest uncommitted expiration time in the
-              // tree, including work that is suspended. Then subtract the offset
-              // used to compute an async update's expiration time. This will cause
-              // high priority (interactive) work to expire earlier than necessary,
-              // but we can account for this by adjusting for the Just Noticeable
-              // Difference.
-              var earliestExpirationTime = findEarliestOutstandingPriorityLevel(
-                root,
-                renderExpirationTime
-              );
-              var earliestExpirationTimeMs = expirationTimeToMs(
-                earliestExpirationTime
-              );
-              startTimeMs = earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
-            }
-            absoluteTimeoutMs = startTimeMs + earliestTimeoutMs;
+        var absoluteTimeoutMs = void 0;
+        if (earliestTimeoutMs === -1) {
+          // If no explicit threshold is given, default to an abitrarily large
+          // value. The actual size doesn't matter because the threshold for the
+          // whole tree will be clamped to the expiration time.
+          absoluteTimeoutMs = maxSigned31BitInt;
+        } else {
+          if (startTimeMs === -1) {
+            // This suspend happened outside of any already timed-out
+            // placeholders. We don't know exactly when the update was
+            // scheduled, but we can infer an approximate start time from the
+            // expiration time. First, find the earliest uncommitted expiration
+            // time in the tree, including work that is suspended. Then subtract
+            // the offset used to compute an async update's expiration time.
+            // This will cause high priority (interactive) work to expire
+            // earlier than necessary, but we can account for this by adjusting
+            // for the Just Noticeable Difference.
+            var earliestExpirationTime = findEarliestOutstandingPriorityLevel(
+              root,
+              renderExpirationTime
+            );
+            var earliestExpirationTimeMs = expirationTimeToMs(
+              earliestExpirationTime
+            );
+            startTimeMs = earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
           }
+          absoluteTimeoutMs = startTimeMs + earliestTimeoutMs;
+        }
 
-          // Mark the earliest timeout in the suspended fiber's ancestor path.
-          // After completing the root, we'll take the largest of all the
-          // suspended fiber's timeouts and use it to compute a timeout for the
-          // whole tree.
-          renderDidSuspend(root, absoluteTimeoutMs, renderExpirationTime);
+        // Mark the earliest timeout in the suspended fiber's ancestor path.
+        // After completing the root, we'll take the largest of all the
+        // suspended fiber's timeouts and use it to compute a timeout for the
+        // whole tree.
+        renderDidSuspend(root, absoluteTimeoutMs, renderExpirationTime);
 
-          _workInProgress.effectTag |= ShouldCapture;
-          _workInProgress.expirationTime = renderExpirationTime;
-          return;
-        }
-        // This boundary already captured during this render. Continue to the
-        // next boundary.
+        _workInProgress.effectTag |= ShouldCapture;
+        _workInProgress.expirationTime = renderExpirationTime;
+        return;
       }
+      // This boundary already captured during this render. Continue to the next
+      // boundary.
       _workInProgress = _workInProgress.return;
     } while (_workInProgress !== null);
     // No boundary was found. Fallthrough to error mode.
+    // TODO: Use invariant so the message is stripped in prod?
     value = new Error(
-      "An update was suspended, but no placeholder UI was provided."
+      (getComponentName(sourceFiber.type) || "A React component") +
+        " suspended while rendering, but no fallback UI was specified.\n" +
+        "\n" +
+        "Add a <Suspense fallback=...> component higher in the tree to " +
+        "provide a loading indicator or placeholder to display." +
+        getStackByFiberInDevAndProd(sourceFiber)
     );
   }
 
@@ -12742,15 +14719,13 @@ function throwException(
         return;
       }
       case ClassComponent:
-      case ClassComponentLazy:
         // Capture and retry
         var errorInfo = value;
         var ctor = workInProgress.type;
         var instance = workInProgress.stateNode;
         if (
           (workInProgress.effectTag & DidCapture) === NoEffect &&
-          ((typeof ctor.getDerivedStateFromCatch === "function" &&
-            enableGetDerivedStateFromCatch) ||
+          (typeof ctor.getDerivedStateFromError === "function" ||
             (instance !== null &&
               typeof instance.componentDidCatch === "function" &&
               !isAlreadyFailedLegacyErrorBoundary(instance)))
@@ -12788,38 +14763,27 @@ function unwindWork(workInProgress, renderExpirationTime) {
       }
       return null;
     }
-    case ClassComponentLazy: {
-      var _Component = workInProgress.type._reactResult;
-      if (isContextProvider(_Component)) {
-        popContext(workInProgress);
-      }
-      var _effectTag = workInProgress.effectTag;
-      if (_effectTag & ShouldCapture) {
-        workInProgress.effectTag = (_effectTag & ~ShouldCapture) | DidCapture;
-        return workInProgress;
-      }
-      return null;
-    }
     case HostRoot: {
       popHostContainer(workInProgress);
       popTopLevelContextObject(workInProgress);
-      var _effectTag2 = workInProgress.effectTag;
+      var _effectTag = workInProgress.effectTag;
       invariant(
-        (_effectTag2 & DidCapture) === NoEffect,
+        (_effectTag & DidCapture) === NoEffect,
         "The root failed to unmount after an error. This is likely a bug in " +
           "React. Please file an issue."
       );
-      workInProgress.effectTag = (_effectTag2 & ~ShouldCapture) | DidCapture;
+      workInProgress.effectTag = (_effectTag & ~ShouldCapture) | DidCapture;
       return workInProgress;
     }
     case HostComponent: {
       popHostContext(workInProgress);
       return null;
     }
-    case PlaceholderComponent: {
-      var _effectTag3 = workInProgress.effectTag;
-      if (_effectTag3 & ShouldCapture) {
-        workInProgress.effectTag = (_effectTag3 & ~ShouldCapture) | DidCapture;
+    case SuspenseComponent: {
+      var _effectTag2 = workInProgress.effectTag;
+      if (_effectTag2 & ShouldCapture) {
+        workInProgress.effectTag = (_effectTag2 & ~ShouldCapture) | DidCapture;
+        // Captured a suspense effect. Re-render the boundary.
         return workInProgress;
       }
       return null;
@@ -12844,14 +14808,6 @@ function unwindInterruptedWork(interruptedWork) {
       }
       break;
     }
-    case ClassComponentLazy: {
-      var _childContextTypes =
-        interruptedWork.type._reactResult.childContextTypes;
-      if (_childContextTypes !== null && _childContextTypes !== undefined) {
-        popContext(interruptedWork);
-      }
-      break;
-    }
     case HostRoot: {
       popHostContainer(interruptedWork);
       popTopLevelContextObject(interruptedWork);
@@ -12873,6 +14829,18 @@ function unwindInterruptedWork(interruptedWork) {
 }
 
 var Dispatcher = {
+  readContext: readContext,
+  useCallback: useCallback,
+  useContext: useContext,
+  useEffect: useEffect,
+  useImperativeMethods: useImperativeMethods,
+  useLayoutEffect: useLayoutEffect,
+  useMemo: useMemo,
+  useReducer: useReducer,
+  useRef: useRef,
+  useState: useState
+};
+var DispatcherWithoutHooks = {
   readContext: readContext
 };
 
@@ -12883,14 +14851,14 @@ var didWarnSetStateChildContext = void 0;
 var warnAboutUpdateOnUnmounted = void 0;
 var warnAboutInvalidUpdates = void 0;
 
-if (enableSchedulerTracking) {
+if (enableSchedulerTracing) {
   // Provide explicit error message when production+profiling bundle of e.g. react-dom
-  // is used with production (non-profiling) bundle of schedule/tracking
+  // is used with production (non-profiling) bundle of scheduler/tracing
   invariant(
-    tracking.__interactionsRef != null &&
-      tracking.__interactionsRef.current != null,
+    tracing.__interactionsRef != null &&
+      tracing.__interactionsRef.current != null,
     "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) " +
-      "without also replacing the `schedule/tracking` module with `schedule/tracking-profiling`. " +
+      "without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. " +
       "Your bundler might have a setting for aliasing both modules. " +
       "Learn more at http://fb.me/react-profiling"
   );
@@ -12901,19 +14869,21 @@ if (enableSchedulerTracking) {
   didWarnSetStateChildContext = false;
   var didWarnStateUpdateForUnmountedComponent = {};
 
-  warnAboutUpdateOnUnmounted = function(fiber) {
+  warnAboutUpdateOnUnmounted = function(fiber, isClass) {
     // We show the whole stack but dedupe on the top component's name because
     // the problematic code almost always lies inside that component.
-    var componentName = getComponentName(fiber.type) || "ReactClass";
+    var componentName = getComponentName(fiber.type) || "ReactComponent";
     if (didWarnStateUpdateForUnmountedComponent[componentName]) {
       return;
     }
     warningWithoutStack$1(
       false,
-      "Can't call setState (or forceUpdate) on an unmounted component. This " +
+      "Can't perform a React state update on an unmounted component. This " +
         "is a no-op, but it indicates a memory leak in your application. To " +
-        "fix, cancel all subscriptions and asynchronous tasks in the " +
-        "componentWillUnmount method.%s",
+        "fix, cancel all subscriptions and asynchronous tasks in %s.%s",
+      isClass
+        ? "the componentWillUnmount method"
+        : "a useEffect cleanup function",
       getStackByFiberInDevAndProd(fiber)
     );
     didWarnStateUpdateForUnmountedComponent[componentName] = true;
@@ -12965,23 +14935,24 @@ var nextRenderDidError = false;
 var nextEffect = null;
 
 var isCommitting$1 = false;
+var rootWithPendingPassiveEffects = null;
+var passiveEffectCallbackHandle = null;
+var passiveEffectCallback = null;
 
 var legacyErrorBoundariesThatAlreadyFailed = null;
 
 // Used for performance tracking.
 var interruptedBy = null;
 
-// Do not decrement interaction counts in the event of suspense timeouts.
-// This would lead to prematurely calling the interaction-complete hook.
-var suspenseDidTimeout = false;
-
 var stashedWorkInProgressProperties = void 0;
 var replayUnitOfWork = void 0;
+var mayReplayFailedUnitOfWork = void 0;
 var isReplayingFailedUnitOfWork = void 0;
 var originalReplayError = void 0;
 var rethrowOriginalError = void 0;
 if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
   stashedWorkInProgressProperties = null;
+  mayReplayFailedUnitOfWork = true;
   isReplayingFailedUnitOfWork = false;
   originalReplayError = null;
   replayUnitOfWork = function(failedUnitOfWork, thrownValue, isYieldy) {
@@ -13026,13 +14997,6 @@ if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
         }
         break;
       }
-      case ClassComponentLazy: {
-        var _Component = getResultFromResolvedThenable(failedUnitOfWork.type);
-        if (isContextProvider(_Component)) {
-          popContext(failedUnitOfWork);
-        }
-        break;
-      }
       case HostPortal:
         popHostContainer(failedUnitOfWork);
         break;
@@ -13171,8 +15135,6 @@ function commitBeforeMutationLifecycles() {
       commitBeforeMutationLifeCycles(current$$1, nextEffect);
     }
 
-    // Don't cleanup effects yet;
-    // This will be done by commitAllLifeCycles()
     nextEffect = nextEffect.nextEffect;
   }
 
@@ -13184,14 +15146,11 @@ function commitBeforeMutationLifecycles() {
 function commitAllLifeCycles(finishedRoot, committedExpirationTime) {
   {
     ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings();
+    ReactStrictModeWarnings.flushLegacyContextWarning();
 
     if (warnAboutDeprecatedLifecycles) {
       ReactStrictModeWarnings.flushPendingDeprecationWarnings();
     }
-
-    if (warnAboutLegacyContextAPI) {
-      ReactStrictModeWarnings.flushLegacyContextWarning();
-    }
   }
   while (nextEffect !== null) {
     var effectTag = nextEffect.effectTag;
@@ -13207,20 +15166,53 @@ function commitAllLifeCycles(finishedRoot, committedExpirationTime) {
       );
     }
 
-    if (effectTag & Ref) {
-      recordEffect();
-      commitAttachRef(nextEffect);
+    if (effectTag & Ref) {
+      recordEffect();
+      commitAttachRef(nextEffect);
+    }
+
+    if (enableHooks && effectTag & Passive) {
+      rootWithPendingPassiveEffects = finishedRoot;
+    }
+
+    nextEffect = nextEffect.nextEffect;
+  }
+}
+
+function commitPassiveEffects(root, firstEffect) {
+  rootWithPendingPassiveEffects = null;
+  passiveEffectCallbackHandle = null;
+  passiveEffectCallback = null;
+
+  // Set this to true to prevent re-entrancy
+  var previousIsRendering = isRendering;
+  isRendering = true;
+
+  var effect = firstEffect;
+  do {
+    if (effect.effectTag & Passive) {
+      var didError = false;
+      var error = void 0;
+      {
+        invokeGuardedCallback(null, commitPassiveHookEffects, null, effect);
+        if (hasCaughtError()) {
+          didError = true;
+          error = clearCaughtError();
+        }
+      }
+      if (didError) {
+        captureCommitPhaseError(effect, error);
+      }
     }
+    effect = effect.nextEffect;
+  } while (effect !== null);
+
+  isRendering = previousIsRendering;
 
-    var next = nextEffect.nextEffect;
-    // Ensure that we clean these up so that we don't accidentally keep them.
-    // I'm not actually sure this matters because we can't reset firstEffect
-    // and lastEffect since they're on every node, not just the effectful
-    // ones. So we have to clean everything as we reuse nodes anyway.
-    nextEffect.nextEffect = null;
-    // Ensure that we reset the effectTag here so that we can rely on effect
-    // tags to reason about the current life-cycle.
-    nextEffect = next;
+  // Check if work was scheduled by one of the effects
+  var rootExpirationTime = root.expirationTime;
+  if (rootExpirationTime !== NoWork) {
+    requestWork(root, rootExpirationTime);
   }
 }
 
@@ -13239,6 +15231,15 @@ function markLegacyErrorBoundaryAsFailed(instance) {
   }
 }
 
+function flushPassiveEffects() {
+  if (passiveEffectCallback !== null) {
+    scheduler.unstable_cancelCallback(passiveEffectCallbackHandle);
+    // We call the scheduled callback instead of commitPassiveEffects directly
+    // to ensure tracing works correctly.
+    passiveEffectCallback();
+  }
+}
+
 function commitRoot(root, finishedWork) {
   isWorking = true;
   isCommitting$1 = true;
@@ -13264,41 +15265,17 @@ function commitRoot(root, finishedWork) {
   var updateExpirationTimeBeforeCommit = finishedWork.expirationTime;
   var childExpirationTimeBeforeCommit = finishedWork.childExpirationTime;
   var earliestRemainingTimeBeforeCommit =
-    updateExpirationTimeBeforeCommit === NoWork ||
-    (childExpirationTimeBeforeCommit !== NoWork &&
-      childExpirationTimeBeforeCommit < updateExpirationTimeBeforeCommit)
+    childExpirationTimeBeforeCommit > updateExpirationTimeBeforeCommit
       ? childExpirationTimeBeforeCommit
       : updateExpirationTimeBeforeCommit;
   markCommittedPriorityLevels(root, earliestRemainingTimeBeforeCommit);
 
   var prevInteractions = null;
-  var committedInteractions = enableSchedulerTracking ? [] : null;
-  if (enableSchedulerTracking) {
+  if (enableSchedulerTracing) {
     // Restore any pending interactions at this point,
     // So that cascading work triggered during the render phase will be accounted for.
-    prevInteractions = tracking.__interactionsRef.current;
-    tracking.__interactionsRef.current = root.memoizedInteractions;
-
-    // We are potentially finished with the current batch of interactions.
-    // So we should clear them out of the pending interaction map.
-    // We do this at the start of commit in case cascading work is scheduled by commit phase lifecycles.
-    // In that event, interaction data may be added back into the pending map for a future commit.
-    // We also store the interactions we are about to commit so that we can notify subscribers after we're done.
-    // These are stored as an Array rather than a Set,
-    // Because the same interaction may be pending for multiple expiration times,
-    // In which case it's important that we decrement the count the right number of times after finishing.
-    root.pendingInteractionMap.forEach(function(
-      scheduledInteractions,
-      scheduledExpirationTime
-    ) {
-      if (scheduledExpirationTime <= committedExpirationTime) {
-        committedInteractions.push.apply(
-          committedInteractions,
-          Array.from(scheduledInteractions)
-        );
-        root.pendingInteractionMap.delete(scheduledExpirationTime);
-      }
-    });
+    prevInteractions = tracing.__interactionsRef.current;
+    tracing.__interactionsRef.current = root.memoizedInteractions;
   }
 
   // Reset this to null before calling lifecycles
@@ -13430,6 +15407,26 @@ function commitRoot(root, finishedWork) {
     }
   }
 
+  if (
+    enableHooks &&
+    firstEffect !== null &&
+    rootWithPendingPassiveEffects !== null
+  ) {
+    // This commit included a passive effect. These do not need to fire until
+    // after the next paint. Schedule an callback to fire them in an async
+    // event. To ensure serial execution, the callback will be flushed early if
+    // we enter rootWithPendingPassiveEffects commit phase before then.
+    var callback = commitPassiveEffects.bind(null, root, firstEffect);
+    if (enableSchedulerTracing) {
+      // TODO: Avoid this extra callback by mutating the tracing ref directly,
+      // like we do at the beginning of commitRoot. I've opted not to do that
+      // here because that code is still in flux.
+      callback = tracing.unstable_wrap(callback);
+    }
+    passiveEffectCallbackHandle = scheduler.unstable_scheduleCallback(callback);
+    passiveEffectCallback = callback;
+  }
+
   isCommitting$1 = false;
   isWorking = false;
   stopCommitLifeCyclesTimer();
@@ -13442,9 +15439,7 @@ function commitRoot(root, finishedWork) {
   var updateExpirationTimeAfterCommit = finishedWork.expirationTime;
   var childExpirationTimeAfterCommit = finishedWork.childExpirationTime;
   var earliestRemainingTimeAfterCommit =
-    updateExpirationTimeAfterCommit === NoWork ||
-    (childExpirationTimeAfterCommit !== NoWork &&
-      childExpirationTimeAfterCommit < updateExpirationTimeAfterCommit)
+    childExpirationTimeAfterCommit > updateExpirationTimeAfterCommit
       ? childExpirationTimeAfterCommit
       : updateExpirationTimeAfterCommit;
   if (earliestRemainingTimeAfterCommit === NoWork) {
@@ -13454,13 +15449,13 @@ function commitRoot(root, finishedWork) {
   }
   onCommit(root, earliestRemainingTimeAfterCommit);
 
-  if (enableSchedulerTracking) {
-    tracking.__interactionsRef.current = prevInteractions;
+  if (enableSchedulerTracing) {
+    tracing.__interactionsRef.current = prevInteractions;
 
     var subscriber = void 0;
 
     try {
-      subscriber = tracking.__subscriberRef.current;
+      subscriber = tracing.__subscriberRef.current;
       if (subscriber !== null && root.memoizedInteractions.size > 0) {
         var threadID = computeThreadID(
           committedExpirationTime,
@@ -13476,28 +15471,38 @@ function commitRoot(root, finishedWork) {
         unhandledError = error;
       }
     } finally {
-      // Don't update interaction counts if we're frozen due to suspense.
-      // In this case, we can skip the completed-work check entirely.
-      if (!suspenseDidTimeout) {
-        // Now that we're done, check the completed batch of interactions.
-        // If no more work is outstanding for a given interaction,
-        // We need to notify the subscribers that it's finished.
-        committedInteractions.forEach(function(interaction) {
-          interaction.__count--;
-          if (subscriber !== null && interaction.__count === 0) {
-            try {
-              subscriber.onInteractionScheduledWorkCompleted(interaction);
-            } catch (error) {
-              // It's not safe for commitRoot() to throw.
-              // Store the error for now and we'll re-throw in finishRendering().
-              if (!hasUnhandledError) {
-                hasUnhandledError = true;
-                unhandledError = error;
+      // Clear completed interactions from the pending Map.
+      // Unless the render was suspended or cascading work was scheduled,
+      // In which case– leave pending interactions until the subsequent render.
+      var pendingInteractionMap = root.pendingInteractionMap;
+      pendingInteractionMap.forEach(function(
+        scheduledInteractions,
+        scheduledExpirationTime
+      ) {
+        // Only decrement the pending interaction count if we're done.
+        // If there's still work at the current priority,
+        // That indicates that we are waiting for suspense data.
+        if (scheduledExpirationTime > earliestRemainingTimeAfterCommit) {
+          pendingInteractionMap.delete(scheduledExpirationTime);
+
+          scheduledInteractions.forEach(function(interaction) {
+            interaction.__count--;
+
+            if (subscriber !== null && interaction.__count === 0) {
+              try {
+                subscriber.onInteractionScheduledWorkCompleted(interaction);
+              } catch (error) {
+                // It's not safe for commitRoot() to throw.
+                // Store the error for now and we'll re-throw in finishRendering().
+                if (!hasUnhandledError) {
+                  hasUnhandledError = true;
+                  unhandledError = error;
+                }
               }
             }
-          }
-        });
-      }
+          });
+        }
+      });
     }
   }
 }
@@ -13533,18 +15538,10 @@ function resetChildExpirationTime(workInProgress, renderTime) {
     while (child !== null) {
       var childUpdateExpirationTime = child.expirationTime;
       var childChildExpirationTime = child.childExpirationTime;
-      if (
-        newChildExpirationTime === NoWork ||
-        (childUpdateExpirationTime !== NoWork &&
-          childUpdateExpirationTime < newChildExpirationTime)
-      ) {
+      if (childUpdateExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = childUpdateExpirationTime;
       }
-      if (
-        newChildExpirationTime === NoWork ||
-        (childChildExpirationTime !== NoWork &&
-          childChildExpirationTime < newChildExpirationTime)
-      ) {
+      if (childChildExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = childChildExpirationTime;
       }
       if (shouldBubbleActualDurations) {
@@ -13560,18 +15557,10 @@ function resetChildExpirationTime(workInProgress, renderTime) {
     while (_child !== null) {
       var _childUpdateExpirationTime = _child.expirationTime;
       var _childChildExpirationTime = _child.childExpirationTime;
-      if (
-        newChildExpirationTime === NoWork ||
-        (_childUpdateExpirationTime !== NoWork &&
-          _childUpdateExpirationTime < newChildExpirationTime)
-      ) {
+      if (_childUpdateExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = _childUpdateExpirationTime;
       }
-      if (
-        newChildExpirationTime === NoWork ||
-        (_childChildExpirationTime !== NoWork &&
-          _childChildExpirationTime < newChildExpirationTime)
-      ) {
+      if (_childChildExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = _childChildExpirationTime;
       }
       _child = _child.sibling;
@@ -13599,18 +15588,22 @@ function completeUnitOfWork(workInProgress) {
     var siblingFiber = workInProgress.sibling;
 
     if ((workInProgress.effectTag & Incomplete) === NoEffect) {
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        // Don't replay if it fails during completion phase.
+        mayReplayFailedUnitOfWork = false;
+      }
       // This fiber completed.
+      // Remember we're completing this unit so we can find a boundary if it fails.
+      nextUnitOfWork = workInProgress;
       if (enableProfilerTimer) {
         if (workInProgress.mode & ProfileMode) {
           startProfilerTimer(workInProgress);
         }
-
         nextUnitOfWork = completeWork(
           current$$1,
           workInProgress,
           nextRenderExpirationTime
         );
-
         if (workInProgress.mode & ProfileMode) {
           // Update render duration assuming we didn't error.
           stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
@@ -13622,21 +15615,19 @@ function completeUnitOfWork(workInProgress) {
           nextRenderExpirationTime
         );
       }
-      var next = nextUnitOfWork;
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        // We're out of completion phase so replaying is fine now.
+        mayReplayFailedUnitOfWork = true;
+      }
       stopWorkTimer(workInProgress);
       resetChildExpirationTime(workInProgress, nextRenderExpirationTime);
       {
         resetCurrentFiber();
       }
 
-      if (next !== null) {
-        stopWorkTimer(workInProgress);
-        if (true && ReactFiberInstrumentation_1.debugTool) {
-          ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
-        }
-        // If completing this work spawned new work, do that next. We'll come
-        // back here again.
-        return next;
+      if (nextUnitOfWork !== null) {
+        // Completing this fiber spawned new work. Work on that next.
+        return nextUnitOfWork;
       }
 
       if (
@@ -13692,15 +15683,24 @@ function completeUnitOfWork(workInProgress) {
         return null;
       }
     } else {
-      if (workInProgress.mode & ProfileMode) {
+      if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
         // Record the render duration for the fiber that errored.
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
+
+        // Include the time spent working on failed children before continuing.
+        var actualDuration = workInProgress.actualDuration;
+        var child = workInProgress.child;
+        while (child !== null) {
+          actualDuration += child.actualDuration;
+          child = child.sibling;
+        }
+        workInProgress.actualDuration = actualDuration;
       }
 
       // This fiber did not complete because something threw. Pop values off
       // the stack without entering the complete phase. If this is a boundary,
       // capture values if possible.
-      var _next = unwindWork(workInProgress, nextRenderExpirationTime);
+      var next = unwindWork(workInProgress, nextRenderExpirationTime);
       // Because this fiber did not complete, don't reset its expiration time.
       if (workInProgress.effectTag & DidCapture) {
         // Restarting an error boundary
@@ -13713,31 +15713,18 @@ function completeUnitOfWork(workInProgress) {
         resetCurrentFiber();
       }
 
-      if (_next !== null) {
+      if (next !== null) {
         stopWorkTimer(workInProgress);
         if (true && ReactFiberInstrumentation_1.debugTool) {
           ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
         }
 
-        if (enableProfilerTimer) {
-          // Include the time spent working on failed children before continuing.
-          if (_next.mode & ProfileMode) {
-            var actualDuration = _next.actualDuration;
-            var child = _next.child;
-            while (child !== null) {
-              actualDuration += child.actualDuration;
-              child = child.sibling;
-            }
-            _next.actualDuration = actualDuration;
-          }
-        }
-
         // If completing this work spawned new work, do that next. We'll come
         // back here again.
         // Since we're restarting, remove anything that is not a host effect
         // from the effect tag.
-        _next.effectTag &= HostEffectMask;
-        return _next;
+        next.effectTag &= HostEffectMask;
+        return next;
       }
 
       if (returnFiber !== null) {
@@ -13796,6 +15783,7 @@ function performUnitOfWork(workInProgress) {
     }
 
     next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+    workInProgress.memoizedProps = workInProgress.pendingProps;
 
     if (workInProgress.mode & ProfileMode) {
       // Record the render duration assuming we didn't bailout (or error).
@@ -13803,6 +15791,7 @@ function performUnitOfWork(workInProgress) {
     }
   } else {
     next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+    workInProgress.memoizedProps = workInProgress.pendingProps;
   }
 
   {
@@ -13836,32 +15825,31 @@ function workLoop(isYieldy) {
       nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     }
   } else {
-    // Flush asynchronous work until the deadline runs out of time.
-    while (nextUnitOfWork !== null && !shouldYield()) {
+    // Flush asynchronous work until there's a higher priority event
+    while (nextUnitOfWork !== null && !shouldYieldToRenderer()) {
       nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     }
   }
 }
 
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused " +
       "by a bug in React. Please file an issue."
   );
-  isWorking = true;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
 
-  var expirationTime = root.nextExpirationTimeToWorkOn;
+  flushPassiveEffects();
 
-  var prevInteractions = null;
-  if (enableSchedulerTracking) {
-    // We're about to start new tracked work.
-    // Restore pending interactions so cascading work triggered during the render phase will be accounted for.
-    prevInteractions = tracking.__interactionsRef.current;
-    tracking.__interactionsRef.current = root.memoizedInteractions;
+  isWorking = true;
+  if (enableHooks) {
+    ReactCurrentOwner$2.currentDispatcher = Dispatcher;
+  } else {
+    ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
   }
 
+  var expirationTime = root.nextExpirationTimeToWorkOn;
+
   // Check if we're starting from a fresh stack, or if we're resuming from
   // previously yielded work.
   if (
@@ -13880,7 +15868,7 @@ function renderRoot(root, isYieldy, isExpired) {
     );
     root.pendingCommitExpirationTime = NoWork;
 
-    if (enableSchedulerTracking) {
+    if (enableSchedulerTracing) {
       // Determine which interactions this batch of work currently includes,
       // So that we can accurately attribute time spent working on it,
       var interactions = new Set();
@@ -13888,7 +15876,7 @@ function renderRoot(root, isYieldy, isExpired) {
         scheduledInteractions,
         scheduledExpirationTime
       ) {
-        if (scheduledExpirationTime <= expirationTime) {
+        if (scheduledExpirationTime >= expirationTime) {
           scheduledInteractions.forEach(function(interaction) {
             return interactions.add(interaction);
           });
@@ -13902,7 +15890,7 @@ function renderRoot(root, isYieldy, isExpired) {
       root.memoizedInteractions = interactions;
 
       if (interactions.size > 0) {
-        var subscriber = tracking.__subscriberRef.current;
+        var subscriber = tracing.__subscriberRef.current;
         if (subscriber !== null) {
           var threadID = computeThreadID(
             expirationTime,
@@ -13911,7 +15899,7 @@ function renderRoot(root, isYieldy, isExpired) {
           try {
             subscriber.onWorkStarted(interactions, threadID);
           } catch (error) {
-            // Work thrown by an interaction tracking subscriber should be rethrown,
+            // Work thrown by an interaction tracing subscriber should be rethrown,
             // But only once it's safe (to avoid leaveing the scheduler in an invalid state).
             // Store the error for now and we'll re-throw in finishRendering().
             if (!hasUnhandledError) {
@@ -13924,6 +15912,14 @@ function renderRoot(root, isYieldy, isExpired) {
     }
   }
 
+  var prevInteractions = null;
+  if (enableSchedulerTracing) {
+    // We're about to start new traced work.
+    // Restore pending interactions so cascading work triggered during the render phase will be accounted for.
+    prevInteractions = tracing.__interactionsRef.current;
+    tracing.__interactionsRef.current = root.memoizedInteractions;
+  }
+
   var didFatal = false;
 
   startWorkLoopTimer(nextUnitOfWork);
@@ -13932,20 +15928,39 @@ function renderRoot(root, isYieldy, isExpired) {
     try {
       workLoop(isYieldy);
     } catch (thrownValue) {
+      resetContextDependences();
+      resetHooks();
+
+      // Reset in case completion throws.
+      // This is only used in DEV and when replaying is on.
+      var mayReplay = void 0;
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        mayReplay = mayReplayFailedUnitOfWork;
+        mayReplayFailedUnitOfWork = true;
+      }
+
       if (nextUnitOfWork === null) {
         // This is a fatal error.
         didFatal = true;
         onUncaughtError(thrownValue);
       } else {
+        if (enableProfilerTimer && nextUnitOfWork.mode & ProfileMode) {
+          // Record the time spent rendering before an error was thrown.
+          // This avoids inaccurate Profiler durations in the case of a suspended render.
+          stopProfilerTimerIfRunningAndRecordDelta(nextUnitOfWork, true);
+        }
+
         {
           // Reset global debug state
           // We assume this is defined in DEV
           resetCurrentlyProcessingQueue();
         }
 
-        var failedUnitOfWork = nextUnitOfWork;
         if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
-          replayUnitOfWork(failedUnitOfWork, thrownValue, isYieldy);
+          if (mayReplay) {
+            var failedUnitOfWork = nextUnitOfWork;
+            replayUnitOfWork(failedUnitOfWork, thrownValue, isYieldy);
+          }
         }
 
         // TODO: we already know this isn't true in some cases.
@@ -13985,15 +16000,16 @@ function renderRoot(root, isYieldy, isExpired) {
     break;
   } while (true);
 
-  if (enableSchedulerTracking) {
-    // Tracked work is done for now; restore the previous interactions.
-    tracking.__interactionsRef.current = prevInteractions;
+  if (enableSchedulerTracing) {
+    // Traced work is done for now; restore the previous interactions.
+    tracing.__interactionsRef.current = prevInteractions;
   }
 
   // We're done performing work. Time to clean up.
   isWorking = false;
   ReactCurrentOwner$2.currentDispatcher = null;
   resetContextDependences();
+  resetHooks();
 
   // Yield back to main thread.
   if (didFatal) {
@@ -14065,7 +16081,7 @@ function renderRoot(root, isYieldy, isExpired) {
       // similar to a suspend, but without a timeout because we're not waiting
       // for a promise to resolve.
       !root.didError &&
-      !isExpired
+      isYieldy
     ) {
       root.didError = true;
       var _suspendedExpirationTime = (root.nextExpirationTimeToWorkOn = expirationTime);
@@ -14081,7 +16097,7 @@ function renderRoot(root, isYieldy, isExpired) {
     }
   }
 
-  if (enableSuspense && !isExpired && nextLatestAbsoluteTimeoutMs !== -1) {
+  if (isYieldy && nextLatestAbsoluteTimeoutMs !== -1) {
     // The tree was suspended.
     var _suspendedExpirationTime2 = expirationTime;
     markSuspendedPriorityLevel(root, _suspendedExpirationTime2);
@@ -14123,21 +16139,16 @@ function renderRoot(root, isYieldy, isExpired) {
   onComplete(root, rootWorkInProgress, expirationTime);
 }
 
-function dispatch(sourceFiber, value, expirationTime) {
-  invariant(
-    !isWorking || isCommitting$1,
-    "dispatch: Cannot dispatch during the render phase."
-  );
-
+function captureCommitPhaseError(sourceFiber, value) {
+  var expirationTime = Sync;
   var fiber = sourceFiber.return;
   while (fiber !== null) {
     switch (fiber.tag) {
       case ClassComponent:
-      case ClassComponentLazy:
         var ctor = fiber.type;
         var instance = fiber.stateNode;
         if (
-          typeof ctor.getDerivedStateFromCatch === "function" ||
+          typeof ctor.getDerivedStateFromError === "function" ||
           (typeof instance.componentDidCatch === "function" &&
             !isAlreadyFailedLegacyErrorBoundary(instance))
         ) {
@@ -14174,10 +16185,6 @@ function dispatch(sourceFiber, value, expirationTime) {
   }
 }
 
-function captureCommitPhaseError(fiber, error) {
-  return dispatch(fiber, error, Sync);
-}
-
 function computeThreadID(expirationTime, interactionThreadID) {
   // Interaction threads are unique per root and expiration time.
   return expirationTime * 1000 + interactionThreadID;
@@ -14201,7 +16208,7 @@ function computeExpirationForFiber(currentTime, fiber) {
   } else {
     // No explicit expiration context was set, and we're not currently
     // performing work. Calculate a new expiration time.
-    if (fiber.mode & AsyncMode) {
+    if (fiber.mode & ConcurrentMode) {
       if (isBatchingInteractiveUpdates) {
         // This is an interactive update
         expirationTime = computeInteractiveExpiration(currentTime);
@@ -14212,7 +16219,7 @@ function computeExpirationForFiber(currentTime, fiber) {
       // If we're in the middle of rendering a tree, do not update at the same
       // expiration time that is already rendering.
       if (nextRoot !== null && expirationTime === nextRenderExpirationTime) {
-        expirationTime += 1;
+        expirationTime -= 1;
       }
     } else {
       // This is a sync update
@@ -14225,7 +16232,7 @@ function computeExpirationForFiber(currentTime, fiber) {
     // all interactive updates when needed.
     if (
       lowestPriorityPendingInteractiveExpirationTime === NoWork ||
-      expirationTime > lowestPriorityPendingInteractiveExpirationTime
+      expirationTime < lowestPriorityPendingInteractiveExpirationTime
     ) {
       lowestPriorityPendingInteractiveExpirationTime = expirationTime;
     }
@@ -14247,159 +16254,168 @@ function renderDidError() {
   nextRenderDidError = true;
 }
 
-function retrySuspendedRoot(root, fiber, suspendedTime) {
-  if (enableSuspense) {
-    var retryTime = void 0;
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = void 0;
 
-    if (isPriorityLevelSuspended(root, suspendedTime)) {
-      // Ping at the original level
-      retryTime = suspendedTime;
-      markPingedPriorityLevel(root, retryTime);
-    } else {
-      // Placeholder already timed out. Compute a new expiration time
-      var currentTime = requestCurrentTime();
-      retryTime = computeExpirationForFiber(currentTime, fiber);
-      markPendingPriorityLevel(root, retryTime);
+  if (isPriorityLevelSuspended(root, suspendedTime)) {
+    // Ping at the original level
+    retryTime = suspendedTime;
+
+    markPingedPriorityLevel(root, retryTime);
+  } else {
+    // Suspense already timed out. Compute a new expiration time
+    var currentTime = requestCurrentTime();
+    retryTime = computeExpirationForFiber(currentTime, boundaryFiber);
+    markPendingPriorityLevel(root, retryTime);
+  }
+
+  // TODO: If the suspense fiber has already rendered the primary children
+  // without suspending (that is, all of the promises have already resolved),
+  // we should not trigger another update here. One case this happens is when
+  // we are in sync mode and a single promise is thrown both on initial render
+  // and on update; we attach two .then(retrySuspendedRoot) callbacks and each
+  // one performs Sync work, rerendering the Suspense.
+
+  if ((boundaryFiber.mode & ConcurrentMode) !== NoContext) {
+    if (root === nextRoot && nextRenderExpirationTime === suspendedTime) {
+      // Received a ping at the same priority level at which we're currently
+      // rendering. Restart from the root.
+      nextRoot = null;
     }
+  }
 
-    scheduleWorkToRoot(fiber, retryTime);
-    var rootExpirationTime = root.expirationTime;
-    if (rootExpirationTime !== NoWork) {
-      if (enableSchedulerTracking) {
-        // Restore previous interactions so that new work is associated with them.
-        var prevInteractions = tracking.__interactionsRef.current;
-        tracking.__interactionsRef.current = root.memoizedInteractions;
-        // Because suspense timeouts do not decrement the interaction count,
-        // Continued suspense work should also not increment the count.
-        storeInteractionsForExpirationTime(root, rootExpirationTime, false);
-        requestWork(root, rootExpirationTime);
-        tracking.__interactionsRef.current = prevInteractions;
-      } else {
-        requestWork(root, rootExpirationTime);
-      }
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  if ((boundaryFiber.mode & ConcurrentMode) === NoContext) {
+    // Outside of concurrent mode, we must schedule an update on the source
+    // fiber, too, since it already committed in an inconsistent state and
+    // therefore does not have any pending work.
+    scheduleWorkToRoot(sourceFiber, retryTime);
+    var sourceTag = sourceFiber.tag;
+    if (sourceTag === ClassComponent && sourceFiber.stateNode !== null) {
+      // When we try rendering again, we should not reuse the current fiber,
+      // since it's known to be in an inconsistent state. Use a force updte to
+      // prevent a bail out.
+      var update = createUpdate(retryTime);
+      update.tag = ForceUpdate;
+      enqueueUpdate(sourceFiber, update);
     }
   }
+
+  var rootExpirationTime = root.expirationTime;
+  if (rootExpirationTime !== NoWork) {
+    requestWork(root, rootExpirationTime);
+  }
 }
 
 function scheduleWorkToRoot(fiber, expirationTime) {
+  recordScheduleUpdate();
+
+  {
+    if (fiber.tag === ClassComponent) {
+      var instance = fiber.stateNode;
+      warnAboutInvalidUpdates(instance);
+    }
+  }
+
   // Update the source fiber's expiration time
-  if (
-    fiber.expirationTime === NoWork ||
-    fiber.expirationTime > expirationTime
-  ) {
+  if (fiber.expirationTime < expirationTime) {
     fiber.expirationTime = expirationTime;
   }
   var alternate = fiber.alternate;
-  if (
-    alternate !== null &&
-    (alternate.expirationTime === NoWork ||
-      alternate.expirationTime > expirationTime)
-  ) {
+  if (alternate !== null && alternate.expirationTime < expirationTime) {
     alternate.expirationTime = expirationTime;
   }
   // Walk the parent path to the root and update the child expiration time.
   var node = fiber.return;
+  var root = null;
   if (node === null && fiber.tag === HostRoot) {
-    return fiber.stateNode;
-  }
-  while (node !== null) {
-    alternate = node.alternate;
-    if (
-      node.childExpirationTime === NoWork ||
-      node.childExpirationTime > expirationTime
-    ) {
-      node.childExpirationTime = expirationTime;
-      if (
+    root = fiber.stateNode;
+  } else {
+    while (node !== null) {
+      alternate = node.alternate;
+      if (node.childExpirationTime < expirationTime) {
+        node.childExpirationTime = expirationTime;
+        if (
+          alternate !== null &&
+          alternate.childExpirationTime < expirationTime
+        ) {
+          alternate.childExpirationTime = expirationTime;
+        }
+      } else if (
         alternate !== null &&
-        (alternate.childExpirationTime === NoWork ||
-          alternate.childExpirationTime > expirationTime)
+        alternate.childExpirationTime < expirationTime
       ) {
         alternate.childExpirationTime = expirationTime;
       }
-    } else if (
-      alternate !== null &&
-      (alternate.childExpirationTime === NoWork ||
-        alternate.childExpirationTime > expirationTime)
-    ) {
-      alternate.childExpirationTime = expirationTime;
-    }
-    if (node.return === null && node.tag === HostRoot) {
-      return node.stateNode;
+      if (node.return === null && node.tag === HostRoot) {
+        root = node.stateNode;
+        break;
+      }
+      node = node.return;
     }
-    node = node.return;
   }
-  return null;
-}
 
-function storeInteractionsForExpirationTime(
-  root,
-  expirationTime,
-  updateInteractionCounts
-) {
-  if (!enableSchedulerTracking) {
-    return;
-  }
+  if (enableSchedulerTracing) {
+    if (root !== null) {
+      var interactions = tracing.__interactionsRef.current;
+      if (interactions.size > 0) {
+        var pendingInteractionMap = root.pendingInteractionMap;
+        var pendingInteractions = pendingInteractionMap.get(expirationTime);
+        if (pendingInteractions != null) {
+          interactions.forEach(function(interaction) {
+            if (!pendingInteractions.has(interaction)) {
+              // Update the pending async work count for previously unscheduled interaction.
+              interaction.__count++;
+            }
 
-  var interactions = tracking.__interactionsRef.current;
-  if (interactions.size > 0) {
-    var pendingInteractions = root.pendingInteractionMap.get(expirationTime);
-    if (pendingInteractions != null) {
-      interactions.forEach(function(interaction) {
-        if (updateInteractionCounts && !pendingInteractions.has(interaction)) {
-          // Update the pending async work count for previously unscheduled interaction.
-          interaction.__count++;
-        }
+            pendingInteractions.add(interaction);
+          });
+        } else {
+          pendingInteractionMap.set(expirationTime, new Set(interactions));
 
-        pendingInteractions.add(interaction);
-      });
-    } else {
-      root.pendingInteractionMap.set(expirationTime, new Set(interactions));
+          // Update the pending async work count for the current interactions.
+          interactions.forEach(function(interaction) {
+            interaction.__count++;
+          });
+        }
 
-      // Update the pending async work count for the current interactions.
-      if (updateInteractionCounts) {
-        interactions.forEach(function(interaction) {
-          interaction.__count++;
-        });
+        var subscriber = tracing.__subscriberRef.current;
+        if (subscriber !== null) {
+          var threadID = computeThreadID(
+            expirationTime,
+            root.interactionThreadID
+          );
+          subscriber.onWorkScheduled(interactions, threadID);
+        }
       }
     }
-
-    var subscriber = tracking.__subscriberRef.current;
-    if (subscriber !== null) {
-      var threadID = computeThreadID(expirationTime, root.interactionThreadID);
-      subscriber.onWorkScheduled(interactions, threadID);
-    }
   }
+  return root;
 }
 
 function scheduleWork(fiber, expirationTime) {
-  recordScheduleUpdate();
-
-  {
-    if (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy) {
-      var instance = fiber.stateNode;
-      warnAboutInvalidUpdates(instance);
-    }
-  }
-
   var root = scheduleWorkToRoot(fiber, expirationTime);
   if (root === null) {
-    if (
-      true &&
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy)
-    ) {
-      warnAboutUpdateOnUnmounted(fiber);
+    {
+      switch (fiber.tag) {
+        case ClassComponent:
+          warnAboutUpdateOnUnmounted(fiber, true);
+          break;
+        case FunctionComponent:
+        case ForwardRef:
+        case MemoComponent:
+        case SimpleMemoComponent:
+          warnAboutUpdateOnUnmounted(fiber, false);
+          break;
+      }
     }
     return;
   }
 
-  if (enableSchedulerTracking) {
-    storeInteractionsForExpirationTime(root, expirationTime, true);
-  }
-
   if (
     !isWorking &&
     nextRenderExpirationTime !== NoWork &&
-    expirationTime < nextRenderExpirationTime
+    expirationTime > nextRenderExpirationTime
   ) {
     // This is an interruption. (Used for performance tracking.)
     interruptedBy = fiber;
@@ -14443,10 +16459,8 @@ var isRendering = false;
 var nextFlushedRoot = null;
 var nextFlushedExpirationTime = NoWork;
 var lowestPriorityPendingInteractiveExpirationTime = NoWork;
-var deadlineDidExpire = false;
 var hasUnhandledError = false;
 var unhandledError = null;
-var deadline = null;
 
 var isBatchingUpdates = false;
 var isUnbatchingUpdates = false;
@@ -14454,7 +16468,7 @@ var isBatchingInteractiveUpdates = false;
 
 var completedBatches = null;
 
-var originalStartTimeMs = now();
+var originalStartTimeMs = now$$1();
 var currentRendererTime = msToExpirationTime(originalStartTimeMs);
 var currentSchedulerTime = currentRendererTime;
 
@@ -14463,24 +16477,22 @@ var NESTED_UPDATE_LIMIT = 50;
 var nestedUpdateCount = 0;
 var lastCommittedRootDuringThisBatch = null;
 
-var timeHeuristicForUnitOfWork = 1;
-
 function recomputeCurrentRendererTime() {
-  var currentTimeMs = now() - originalStartTimeMs;
+  var currentTimeMs = now$$1() - originalStartTimeMs;
   currentRendererTime = msToExpirationTime(currentTimeMs);
 }
 
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (callbackExpirationTime !== NoWork) {
     // A callback is already scheduled. Check its expiration time (timeout).
-    if (expirationTime > callbackExpirationTime) {
+    if (expirationTime < callbackExpirationTime) {
       // Existing callback has sufficient timeout. Exit.
       return;
     } else {
       if (callbackID !== null) {
         // Existing callback has insufficient timeout. Cancel and schedule a
         // new one.
-        cancelDeferredCallback(callbackID);
+        cancelDeferredCallback$$1(callbackID);
       }
     }
     // The request callback timer is already running. Don't start a new one.
@@ -14489,10 +16501,12 @@ function scheduleCallbackWithExpirationTime(root, expirationTime) {
   }
 
   callbackExpirationTime = expirationTime;
-  var currentMs = now() - originalStartTimeMs;
+  var currentMs = now$$1() - originalStartTimeMs;
   var expirationTimeMs = expirationTimeToMs(expirationTime);
   var timeout = expirationTimeMs - currentMs;
-  callbackID = scheduleDeferredCallback(performAsyncWork, { timeout: timeout });
+  callbackID = scheduleDeferredCallback$$1(performAsyncWork, {
+    timeout: timeout
+  });
 }
 
 // For every call to renderRoot, one of onFatal, onComplete, onSuspend, and
@@ -14516,7 +16530,7 @@ function onSuspend(
   msUntilTimeout
 ) {
   root.expirationTime = rootExpirationTime;
-  if (enableSuspense && msUntilTimeout === 0 && !shouldYield()) {
+  if (msUntilTimeout === 0 && !shouldYieldToRenderer()) {
     // Don't wait an additional tick. Commit the tree immediately.
     root.pendingCommitExpirationTime = suspendedExpirationTime;
     root.finishedWork = finishedWork;
@@ -14534,26 +16548,15 @@ function onYield(root) {
 }
 
 function onTimeout(root, finishedWork, suspendedExpirationTime) {
-  if (enableSuspense) {
-    // The root timed out. Commit it.
-    root.pendingCommitExpirationTime = suspendedExpirationTime;
-    root.finishedWork = finishedWork;
-    // Read the current time before entering the commit phase. We can be
-    // certain this won't cause tearing related to batching of event updates
-    // because we're at the top of a timer event.
-    recomputeCurrentRendererTime();
-    currentSchedulerTime = currentRendererTime;
-
-    if (enableSchedulerTracking) {
-      // Don't update pending interaction counts for suspense timeouts,
-      // Because we know we still need to do more work in this case.
-      suspenseDidTimeout = true;
-      flushRoot(root, suspendedExpirationTime);
-      suspenseDidTimeout = false;
-    } else {
-      flushRoot(root, suspendedExpirationTime);
-    }
-  }
+  // The root timed out. Commit it.
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  // Read the current time before entering the commit phase. We can be
+  // certain this won't cause tearing related to batching of event updates
+  // because we're at the top of a timer event.
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  flushRoot(root, suspendedExpirationTime);
 }
 
 function onCommit(root, expirationTime) {
@@ -14622,7 +16625,7 @@ function requestWork(root, expirationTime) {
       // flush it now.
       nextFlushedRoot = root;
       nextFlushedExpirationTime = Sync;
-      performWorkOnRoot(root, Sync, true);
+      performWorkOnRoot(root, Sync, false);
     }
     return;
   }
@@ -14652,10 +16655,7 @@ function addRootToSchedule(root, expirationTime) {
   } else {
     // This root is already scheduled, but its priority may have increased.
     var remainingExpirationTime = root.expirationTime;
-    if (
-      remainingExpirationTime === NoWork ||
-      expirationTime < remainingExpirationTime
-    ) {
+    if (expirationTime > remainingExpirationTime) {
       // Update the priority.
       root.expirationTime = expirationTime;
     }
@@ -14704,10 +16704,7 @@ function findHighestPriorityRoot() {
         }
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          highestPriorityWork === NoWork ||
-          remainingExpirationTime < highestPriorityWork
-        ) {
+        if (remainingExpirationTime > highestPriorityWork) {
           // Update the priority, if it's higher
           highestPriorityWork = remainingExpirationTime;
           highestPriorityRoot = root;
@@ -14730,43 +16727,60 @@ function findHighestPriorityRoot() {
   nextFlushedExpirationTime = highestPriorityWork;
 }
 
-function performAsyncWork(dl) {
-  if (dl.didTimeout) {
-    // The callback timed out. That means at least one update has expired.
-    // Iterate through the root schedule. If they contain expired work, set
-    // the next render expiration time to the current time. This has the effect
-    // of flushing all expired work in a single batch, instead of flushing each
-    // level one at a time.
-    if (firstScheduledRoot !== null) {
-      recomputeCurrentRendererTime();
-      var root = firstScheduledRoot;
-      do {
-        didExpireAtExpirationTime(root, currentRendererTime);
-        // The root schedule is circular, so this is never null.
-        root = root.nextScheduledRoot;
-      } while (root !== firstScheduledRoot);
+// TODO: This wrapper exists because many of the older tests (the ones that use
+// flushDeferredPri) rely on the number of times `shouldYield` is called. We
+// should get rid of it.
+var didYield = false;
+function shouldYieldToRenderer() {
+  if (didYield) {
+    return true;
+  }
+  if (shouldYield$$1()) {
+    didYield = true;
+    return true;
+  }
+  return false;
+}
+
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer()) {
+      // The callback timed out. That means at least one update has expired.
+      // Iterate through the root schedule. If they contain expired work, set
+      // the next render expiration time to the current time. This has the effect
+      // of flushing all expired work in a single batch, instead of flushing each
+      // level one at a time.
+      if (firstScheduledRoot !== null) {
+        recomputeCurrentRendererTime();
+        var root = firstScheduledRoot;
+        do {
+          didExpireAtExpirationTime(root, currentRendererTime);
+          // The root schedule is circular, so this is never null.
+          root = root.nextScheduledRoot;
+        } while (root !== firstScheduledRoot);
+      }
     }
+    performWork(NoWork, true);
+  } finally {
+    didYield = false;
   }
-  performWork(NoWork, dl);
 }
 
 function performSyncWork() {
-  performWork(Sync, null);
+  performWork(Sync, false);
 }
 
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
-
-  // Keep working on roots until there's no more work, or until we reach
-  // the deadline.
+function performWork(minExpirationTime, isYieldy) {
+  // Keep working on roots until there's no more work, or until there's a higher
+  // priority event.
   findHighestPriorityRoot();
 
-  if (deadline !== null) {
+  if (isYieldy) {
     recomputeCurrentRendererTime();
     currentSchedulerTime = currentRendererTime;
 
     if (enableUserTimingAPI) {
-      var didExpire = nextFlushedExpirationTime < currentRendererTime;
+      var didExpire = nextFlushedExpirationTime > currentRendererTime;
       var timeout = expirationTimeToMs(nextFlushedExpirationTime);
       stopRequestCallbackTimer(didExpire, timeout);
     }
@@ -14774,14 +16788,13 @@ function performWork(minExpirationTime, dl) {
     while (
       nextFlushedRoot !== null &&
       nextFlushedExpirationTime !== NoWork &&
-      (minExpirationTime === NoWork ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime)
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime)
     ) {
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       );
       findHighestPriorityRoot();
       recomputeCurrentRendererTime();
@@ -14791,10 +16804,9 @@ function performWork(minExpirationTime, dl) {
     while (
       nextFlushedRoot !== null &&
       nextFlushedExpirationTime !== NoWork &&
-      (minExpirationTime === NoWork ||
-        minExpirationTime >= nextFlushedExpirationTime)
+      minExpirationTime <= nextFlushedExpirationTime
     ) {
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, true);
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, false);
       findHighestPriorityRoot();
     }
   }
@@ -14803,7 +16815,7 @@ function performWork(minExpirationTime, dl) {
   // or there's no more work left with sufficient priority.
 
   // If we're inside a callback, set this to false since we just completed it.
-  if (deadline !== null) {
+  if (isYieldy) {
     callbackExpirationTime = NoWork;
     callbackID = null;
   }
@@ -14816,9 +16828,6 @@ function performWork(minExpirationTime, dl) {
   }
 
   // Clean-up.
-  deadline = null;
-  deadlineDidExpire = false;
-
   finishRendering();
 }
 
@@ -14833,7 +16842,7 @@ function flushRoot(root, expirationTime) {
   // including the given time.
   nextFlushedRoot = root;
   nextFlushedExpirationTime = expirationTime;
-  performWorkOnRoot(root, expirationTime, true);
+  performWorkOnRoot(root, expirationTime, false);
   // Flush any sync work that was scheduled by lifecycles
   performSyncWork();
 }
@@ -14866,7 +16875,7 @@ function finishRendering() {
   }
 }
 
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused " +
@@ -14876,7 +16885,7 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
   isRendering = true;
 
   // Check if this is async work or sync/expired work.
-  if (deadline === null || isExpired) {
+  if (!isYieldy) {
     // Flush work without yielding.
     // TODO: Non-yieldy work does not necessarily imply expired work. A renderer
     // may want to perform some work without yielding, but also without
@@ -14891,13 +16900,12 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
       // If this root previously suspended, clear its existing timeout, since
       // we're about to try rendering again.
       var timeoutHandle = root.timeoutHandle;
-      if (enableSuspense && timeoutHandle !== noTimeout) {
+      if (timeoutHandle !== noTimeout) {
         root.timeoutHandle = noTimeout;
         // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
         cancelTimeout(timeoutHandle);
       }
-      var isYieldy = false;
-      renderRoot(root, isYieldy, isExpired);
+      renderRoot(root, isYieldy);
       finishedWork = root.finishedWork;
       if (finishedWork !== null) {
         // We've completed the root. Commit it.
@@ -14915,18 +16923,17 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
       // If this root previously suspended, clear its existing timeout, since
       // we're about to try rendering again.
       var _timeoutHandle = root.timeoutHandle;
-      if (enableSuspense && _timeoutHandle !== noTimeout) {
+      if (_timeoutHandle !== noTimeout) {
         root.timeoutHandle = noTimeout;
         // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
         cancelTimeout(_timeoutHandle);
       }
-      var _isYieldy = true;
-      renderRoot(root, _isYieldy, isExpired);
+      renderRoot(root, isYieldy);
       _finishedWork = root.finishedWork;
       if (_finishedWork !== null) {
-        // We've completed the root. Check the deadline one more time
+        // We've completed the root. Check the if we should yield one more time
         // before committing.
-        if (!shouldYield()) {
+        if (!shouldYieldToRenderer()) {
           // Still time left. Commit the root.
           completeRoot$1(root, _finishedWork, expirationTime);
         } else {
@@ -14944,7 +16951,7 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
 function completeRoot$1(root, finishedWork, expirationTime) {
   // Check if there's a batch that matches this expiration time.
   var firstBatch = root.firstBatch;
-  if (firstBatch !== null && firstBatch._expirationTime <= expirationTime) {
+  if (firstBatch !== null && firstBatch._expirationTime >= expirationTime) {
     if (completedBatches === null) {
       completedBatches = [firstBatch];
     } else {
@@ -14976,24 +16983,6 @@ function completeRoot$1(root, finishedWork, expirationTime) {
   commitRoot(root, finishedWork);
 }
 
-// When working on async work, the reconciler asks the renderer if it should
-// yield execution. For DOM, we implement this with requestIdleCallback.
-function shouldYield() {
-  if (deadlineDidExpire) {
-    return true;
-  }
-  if (
-    deadline === null ||
-    deadline.timeRemaining() > timeHeuristicForUnitOfWork
-  ) {
-    // Disregard deadline.didTimeout. Only expired work should be flushed
-    // during a timeout. This path is only hit for non-expired work.
-    return false;
-  }
-  deadlineDidExpire = true;
-  return true;
-}
-
 function onUncaughtError(error) {
   invariant(
     nextFlushedRoot !== null,
@@ -15038,7 +17027,7 @@ function interactiveUpdates$1(fn, a, b) {
     lowestPriorityPendingInteractiveExpirationTime !== NoWork
   ) {
     // Synchronously flush pending interactive updates.
-    performWork(lowestPriorityPendingInteractiveExpirationTime, null);
+    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
     lowestPriorityPendingInteractiveExpirationTime = NoWork;
   }
   var previousIsBatchingInteractiveUpdates = isBatchingInteractiveUpdates;
@@ -15062,7 +17051,7 @@ function flushInteractiveUpdates$1() {
     lowestPriorityPendingInteractiveExpirationTime !== NoWork
   ) {
     // Synchronously flush pending interactive updates.
-    performWork(lowestPriorityPendingInteractiveExpirationTime, null);
+    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
     lowestPriorityPendingInteractiveExpirationTime = NoWork;
   }
 }
@@ -15071,9 +17060,11 @@ function flushInteractiveUpdates$1() {
 // Might add PROFILE later.
 
 var didWarnAboutNestedUpdates = void 0;
+var didWarnAboutFindNodeInStrictMode = void 0;
 
 {
   didWarnAboutNestedUpdates = false;
+  didWarnAboutFindNodeInStrictMode = {};
 }
 
 function getContextForSubtree(parentComponent) {
@@ -15089,11 +17080,6 @@ function getContextForSubtree(parentComponent) {
     if (isContextProvider(Component)) {
       return processChildContext(fiber, Component, parentContext);
     }
-  } else if (fiber.tag === ClassComponentLazy) {
-    var _Component = getResultFromResolvedThenable(fiber.type);
-    if (isContextProvider(_Component)) {
-      return processChildContext(fiber, _Component, parentContext);
-    }
   }
 
   return parentContext;
@@ -15131,9 +17117,11 @@ function scheduleRootUpdate(current$$1, element, expirationTime, callback) {
       : void 0;
     update.callback = callback;
   }
-  enqueueUpdate(current$$1, update);
 
+  flushPassiveEffects();
+  enqueueUpdate(current$$1, update);
   scheduleWork(current$$1, expirationTime);
+
   return expirationTime;
 }
 
@@ -15169,7 +17157,7 @@ function updateContainerAtExpirationTime(
   return scheduleRootUpdate(current$$1, element, expirationTime, callback);
 }
 
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = get$1(component);
   if (fiber === undefined) {
     if (typeof component.render === "function") {
@@ -15189,8 +17177,66 @@ function findHostInstance$1(component) {
   return hostFiber.stateNode;
 }
 
-function createContainer(containerInfo, isAsync, hydrate) {
-  return createFiberRoot(containerInfo, isAsync, hydrate);
+function findHostInstanceWithWarning(component, methodName) {
+  {
+    var fiber = get$1(component);
+    if (fiber === undefined) {
+      if (typeof component.render === "function") {
+        invariant(false, "Unable to find node on an unmounted component.");
+      } else {
+        invariant(
+          false,
+          "Argument appears to not be a ReactComponent. Keys: %s",
+          Object.keys(component)
+        );
+      }
+    }
+    var hostFiber = findCurrentHostFiber(fiber);
+    if (hostFiber === null) {
+      return null;
+    }
+    if (hostFiber.mode & StrictMode) {
+      var componentName = getComponentName(fiber.type) || "Component";
+      if (!didWarnAboutFindNodeInStrictMode[componentName]) {
+        didWarnAboutFindNodeInStrictMode[componentName] = true;
+        if (fiber.mode & StrictMode) {
+          warningWithoutStack$1(
+            false,
+            "%s is deprecated in StrictMode. " +
+              "%s was passed an instance of %s which is inside StrictMode. " +
+              "Instead, add a ref directly to the element you want to reference." +
+              "\n%s" +
+              "\n\nLearn more about using refs safely here:" +
+              "\nhttps://fb.me/react-strict-mode-find-node",
+            methodName,
+            methodName,
+            componentName,
+            getStackByFiberInDevAndProd(hostFiber)
+          );
+        } else {
+          warningWithoutStack$1(
+            false,
+            "%s is deprecated in StrictMode. " +
+              "%s was passed an instance of %s which renders StrictMode children. " +
+              "Instead, add a ref directly to the element you want to reference." +
+              "\n%s" +
+              "\n\nLearn more about using refs safely here:" +
+              "\nhttps://fb.me/react-strict-mode-find-node",
+            methodName,
+            methodName,
+            componentName,
+            getStackByFiberInDevAndProd(hostFiber)
+          );
+        }
+      }
+    }
+    return hostFiber.stateNode;
+  }
+  return findHostInstance(component);
+}
+
+function createContainer(containerInfo, isConcurrent, hydrate) {
+  return createFiberRoot(containerInfo, isConcurrent, hydrate);
 }
 
 function updateContainer(element, container, parentComponent, callback) {
@@ -15266,7 +17312,7 @@ function createPortal(
 
 // TODO: this is special because it gets imported during build.
 
-var ReactVersion = "16.5.0";
+var ReactVersion = "16.6.1";
 
 // Modules provided by RN:
 var NativeMethodsMixin = function(findNodeHandle, findHostInstance) {
@@ -15668,9 +17714,9 @@ function getInstanceFromTag(tag) {
 }
 
 // Module provided by RN:
-var emptyObject$2 = {};
+var emptyObject$1 = {};
 {
-  Object.freeze(emptyObject$2);
+  Object.freeze(emptyObject$1);
 }
 
 var getInspectorDataForViewTag = void 0;
@@ -15703,9 +17749,9 @@ var getInspectorDataForViewTag = void 0;
   var getHostProps = function(fiber) {
     var host = findCurrentHostFiber(fiber);
     if (host) {
-      return host.memoizedProps || emptyObject$2;
+      return host.memoizedProps || emptyObject$1;
     }
-    return emptyObject$2;
+    return emptyObject$1;
   };
 
   var getHostNode = function(fiber, findNodeHandle) {
@@ -15751,7 +17797,7 @@ var getInspectorDataForViewTag = void 0;
     if (!closestInstance) {
       return {
         hierarchy: [],
-        props: emptyObject$2,
+        props: emptyObject$1,
         selection: null,
         source: null
       };
@@ -15775,7 +17821,6 @@ var getInspectorDataForViewTag = void 0;
 }
 
 var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
-var findHostInstance = findHostInstance$1;
 
 function findNodeHandle(componentOrHandle) {
   {
@@ -15809,7 +17854,14 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag) {
     return componentOrHandle.canonical._nativeTag;
   }
-  var hostInstance = findHostInstance(componentOrHandle);
+  var hostInstance = void 0;
+  {
+    hostInstance = findHostInstanceWithWarning(
+      componentOrHandle,
+      "findNodeHandle"
+    );
+  }
+
   if (hostInstance == null) {
     return hostInstance;
   }
@@ -15891,4 +17943,4 @@ var fabric = ReactFabric$3.default || ReactFabric$3;
 module.exports = fabric;
 
   })();
-}
+}
\ No newline at end of file
diff --git a/Libraries/Renderer/oss/ReactFabric-prod.js b/Libraries/Renderer/oss/ReactFabric-prod.js
index fb635b0d5a390b..95eeffce359f83 100644
--- a/Libraries/Renderer/oss/ReactFabric-prod.js
+++ b/Libraries/Renderer/oss/ReactFabric-prod.js
@@ -19,7 +19,8 @@ var ReactNativeViewConfigRegistry = require("ReactNativeViewConfigRegistry"),
   flattenStyle = require("flattenStyle"),
   TextInputState = require("TextInputState"),
   FabricUIManager = require("FabricUIManager");
-var ExceptionsManager = require("ExceptionsManager");
+var scheduler = require("scheduler"),
+  ExceptionsManager = require("ExceptionsManager");
 function invariant(condition, format, a, b, c, d, e, f) {
   if (!condition) {
     condition = void 0;
@@ -166,10 +167,10 @@ var plugins = [],
   getFiberCurrentPropsFromNode = null,
   getInstanceFromNode = null,
   getNodeFromInstance = null;
-function executeDispatch(event, simulated, listener, inst) {
-  simulated = event.type || "unknown-event";
+function executeDispatch(event, listener, inst) {
+  var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
-  invokeGuardedCallbackAndCatchFirstError(simulated, listener, void 0, event);
+  invokeGuardedCallbackAndCatchFirstError(type, listener, void 0, event);
   event.currentTarget = null;
 }
 function executeDirectDispatch(event) {
@@ -215,10 +216,10 @@ function executeDispatchesAndReleaseTopLevel(e) {
         i < dispatchListeners.length && !e.isPropagationStopped();
         i++
       )
-        executeDispatch(e, !1, dispatchListeners[i], dispatchInstances[i]);
+        executeDispatch(e, dispatchListeners[i], dispatchInstances[i]);
     else
       dispatchListeners &&
-        executeDispatch(e, !1, dispatchListeners, dispatchInstances);
+        executeDispatch(e, dispatchListeners, dispatchInstances);
     e._dispatchListeners = null;
     e._dispatchInstances = null;
     e.isPersistent() || e.constructor.release(e);
@@ -293,7 +294,7 @@ function getListener(inst, registrationName) {
 }
 function getParent(inst) {
   do inst = inst.return;
-  while (inst && 7 !== inst.tag);
+  while (inst && 5 !== inst.tag);
   return inst ? inst : null;
 }
 function traverseTwoPhase(inst, fn, arg) {
@@ -955,10 +956,6 @@ var eventTypes$1 = {
       }
     }
   },
-  customBubblingEventTypes$1 =
-    ReactNativeViewConfigRegistry.customBubblingEventTypes,
-  customDirectEventTypes$1 =
-    ReactNativeViewConfigRegistry.customDirectEventTypes,
   ReactNativeBridgeEventPlugin = {
     eventTypes: ReactNativeViewConfigRegistry.eventTypes,
     extractEvents: function(
@@ -968,8 +965,10 @@ var eventTypes$1 = {
       nativeEventTarget
     ) {
       if (null == targetInst) return null;
-      var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType],
-        directDispatchConfig = customDirectEventTypes$1[topLevelType];
+      var bubbleDispatchConfig =
+          ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType],
+        directDispatchConfig =
+          ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
       invariant(
         bubbleDispatchConfig || directDispatchConfig,
         'Unsupported top level event type "%s" dispatched',
@@ -1029,9 +1028,13 @@ var ReactSharedInternals =
   REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 60114,
   REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 60109,
   REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 60110,
-  REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 60111,
+  REACT_CONCURRENT_MODE_TYPE = hasSymbol
+    ? Symbol.for("react.concurrent_mode")
+    : 60111,
   REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for("react.forward_ref") : 60112,
-  REACT_PLACEHOLDER_TYPE = hasSymbol ? Symbol.for("react.placeholder") : 60113,
+  REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 60113,
+  REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 60115,
+  REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 60116,
   MAYBE_ITERATOR_SYMBOL = "function" === typeof Symbol && Symbol.iterator;
 function getIteratorFn(maybeIterable) {
   if (null === maybeIterable || "object" !== typeof maybeIterable) return null;
@@ -1045,8 +1048,8 @@ function getComponentName(type) {
   if ("function" === typeof type) return type.displayName || type.name || null;
   if ("string" === typeof type) return type;
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -1055,28 +1058,28 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
-  if ("object" === typeof type) {
+  if ("object" === typeof type)
     switch (type.$$typeof) {
       case REACT_CONTEXT_TYPE:
         return "Context.Consumer";
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
+        var innerType = type.render;
+        innerType = innerType.displayName || innerType.name || "";
         return (
-          (type = type.render),
-          (type = type.displayName || type.name || ""),
-          "" !== type ? "ForwardRef(" + type + ")" : "ForwardRef"
+          type.displayName ||
+          ("" !== innerType ? "ForwardRef(" + innerType + ")" : "ForwardRef")
         );
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE:
+        if ((type = 1 === type._status ? type._result : null))
+          return getComponentName(type);
     }
-    if (
-      "function" === typeof type.then &&
-      (type = 1 === type._reactStatus ? type._reactResult : null)
-    )
-      return getComponentName(type);
-  }
   return null;
 }
 function isFiberMountedImpl(fiber) {
@@ -1087,7 +1090,7 @@ function isFiberMountedImpl(fiber) {
     for (; node.return; )
       if (((node = node.return), 0 !== (node.effectTag & 2))) return 1;
   }
-  return 5 === node.tag ? 2 : 3;
+  return 3 === node.tag ? 2 : 3;
 }
 function assertIsMounted(fiber) {
   invariant(
@@ -1163,14 +1166,14 @@ function findCurrentFiberUsingSlowPath(fiber) {
       "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue."
     );
   }
-  invariant(5 === a.tag, "Unable to find node on an unmounted component.");
+  invariant(3 === a.tag, "Unable to find node on an unmounted component.");
   return a.stateNode.current === a ? fiber : alternate;
 }
 function findCurrentHostFiber(parent) {
   parent = findCurrentFiberUsingSlowPath(parent);
   if (!parent) return null;
   for (var node = parent; ; ) {
-    if (7 === node.tag || 8 === node.tag) return node;
+    if (5 === node.tag || 6 === node.tag) return node;
     if (node.child) (node.child.return = node), (node = node.child);
     else {
       if (node === parent) break;
@@ -1420,18 +1423,12 @@ var now$1 =
           return Date.now();
         },
   scheduledCallback = null,
-  frameDeadline = 0,
-  frameDeadlineObject = {
-    timeRemaining: function() {
-      return frameDeadline - now$1();
-    },
-    didTimeout: !1
-  };
+  frameDeadline = 0;
 function setTimeoutCallback() {
   frameDeadline = now$1() + 5;
   var callback = scheduledCallback;
   scheduledCallback = null;
-  null !== callback && callback(frameDeadlineObject);
+  null !== callback && callback();
 }
 var restoreTarget = null,
   restoreQueue = null;
@@ -1506,7 +1503,7 @@ function dispatchEvent(target, topLevelType, nativeEvent) {
 function shim$1() {
   invariant(
     !1,
-    "The current renderer does not support hyration. This error is likely caused by a bug in React. Please file an issue."
+    "The current renderer does not support hydration. This error is likely caused by a bug in React. Please file an issue."
   );
 }
 var nextReactTag = 2;
@@ -1588,22 +1585,51 @@ function createTextInstance(
     )
   };
 }
+var scheduleTimeout = setTimeout,
+  cancelTimeout = clearTimeout;
+function cloneHiddenInstance(instance) {
+  var node = instance.node;
+  var updatePayload = diffProperties(
+    null,
+    emptyObject,
+    { style: { display: "none" } },
+    instance.canonical.viewConfig.validAttributes
+  );
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(node, updatePayload),
+    canonical: instance.canonical
+  };
+}
+function cloneUnhiddenInstance(instance, type, props) {
+  var viewConfig = instance.canonical.viewConfig;
+  type = instance.node;
+  var prevProps = Object.assign({}, props, {
+    style: [props.style, { display: "none" }]
+  });
+  props = diffProperties(null, prevProps, props, viewConfig.validAttributes);
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(type, props),
+    canonical: instance.canonical
+  };
+}
 var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
 function getStackByFiberInDevAndProd(workInProgress) {
   var info = "";
   do {
     a: switch (workInProgress.tag) {
-      case 4:
-      case 0:
-      case 1:
-      case 2:
       case 3:
+      case 4:
+      case 6:
       case 7:
       case 10:
+      case 9:
+        var JSCompiler_inline_result = "";
+        break a;
+      default:
         var owner = workInProgress._debugOwner,
           source = workInProgress._debugSource,
           name = getComponentName(workInProgress.type);
-        var JSCompiler_inline_result = null;
+        JSCompiler_inline_result = null;
         owner && (JSCompiler_inline_result = getComponentName(owner.type));
         owner = name;
         name = "";
@@ -1617,9 +1643,6 @@ function getStackByFiberInDevAndProd(workInProgress) {
           : JSCompiler_inline_result &&
             (name = " (created by " + JSCompiler_inline_result + ")");
         JSCompiler_inline_result = "\n    in " + (owner || "Unknown") + name;
-        break a;
-      default:
-        JSCompiler_inline_result = "";
     }
     info += JSCompiler_inline_result;
     workInProgress = workInProgress.return;
@@ -1750,7 +1773,7 @@ function injectInternals(internals) {
 function FiberNode(tag, pendingProps, key, mode) {
   this.tag = tag;
   this.key = key;
-  this.sibling = this.child = this.return = this.stateNode = this.type = null;
+  this.sibling = this.child = this.return = this.stateNode = this.type = this.elementType = null;
   this.index = 0;
   this.ref = null;
   this.pendingProps = pendingProps;
@@ -1761,19 +1784,33 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.childExpirationTime = this.expirationTime = 0;
   this.alternate = null;
 }
+function createFiber(tag, pendingProps, key, mode) {
+  return new FiberNode(tag, pendingProps, key, mode);
+}
 function shouldConstruct(Component) {
   Component = Component.prototype;
   return !(!Component || !Component.isReactComponent);
 }
-function createWorkInProgress(current, pendingProps, expirationTime) {
+function resolveLazyComponentTag(Component) {
+  if ("function" === typeof Component)
+    return shouldConstruct(Component) ? 1 : 0;
+  if (void 0 !== Component && null !== Component) {
+    Component = Component.$$typeof;
+    if (Component === REACT_FORWARD_REF_TYPE) return 11;
+    if (Component === REACT_MEMO_TYPE) return 14;
+  }
+  return 2;
+}
+function createWorkInProgress(current, pendingProps) {
   var workInProgress = current.alternate;
   null === workInProgress
-    ? ((workInProgress = new FiberNode(
+    ? ((workInProgress = createFiber(
         current.tag,
         pendingProps,
         current.key,
         current.mode
       )),
+      (workInProgress.elementType = current.elementType),
       (workInProgress.type = current.type),
       (workInProgress.stateNode = current.stateNode),
       (workInProgress.alternate = current),
@@ -1784,10 +1821,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       (workInProgress.firstEffect = null),
       (workInProgress.lastEffect = null));
   workInProgress.childExpirationTime = current.childExpirationTime;
-  workInProgress.expirationTime =
-    pendingProps !== current.pendingProps
-      ? expirationTime
-      : current.expirationTime;
+  workInProgress.expirationTime = current.expirationTime;
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
   workInProgress.memoizedState = current.memoizedState;
@@ -1798,57 +1832,66 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   workInProgress.ref = current.ref;
   return workInProgress;
 }
-function createFiberFromElement(element, mode, expirationTime) {
-  var type = element.type,
-    key = element.key;
-  element = element.props;
-  var fiberTag = void 0;
-  if ("function" === typeof type) fiberTag = shouldConstruct(type) ? 2 : 4;
-  else if ("string" === typeof type) fiberTag = 7;
+function createFiberFromTypeAndProps(
+  type,
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
+  var fiberTag = 2;
+  owner = type;
+  if ("function" === typeof type) shouldConstruct(type) && (fiberTag = 1);
+  else if ("string" === typeof type) fiberTag = 5;
   else
     a: switch (type) {
       case REACT_FRAGMENT_TYPE:
         return createFiberFromFragment(
-          element.children,
+          pendingProps.children,
           mode,
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 3;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(pendingProps, mode | 3, expirationTime, key);
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 2;
-        break;
+        return createFiberFromMode(pendingProps, mode | 2, expirationTime, key);
       case REACT_PROFILER_TYPE:
         return (
-          (type = new FiberNode(15, element, key, mode | 4)),
+          (type = createFiber(12, pendingProps, key, mode | 4)),
+          (type.elementType = REACT_PROFILER_TYPE),
           (type.type = REACT_PROFILER_TYPE),
           (type.expirationTime = expirationTime),
           type
         );
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = 16;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return (
+          (type = createFiber(13, pendingProps, key, mode)),
+          (type.elementType = REACT_SUSPENSE_TYPE),
+          (type.type = REACT_SUSPENSE_TYPE),
+          (type.expirationTime = expirationTime),
+          type
+        );
       default:
         if ("object" === typeof type && null !== type)
           switch (type.$$typeof) {
             case REACT_PROVIDER_TYPE:
-              fiberTag = 12;
+              fiberTag = 10;
               break a;
             case REACT_CONTEXT_TYPE:
-              fiberTag = 11;
+              fiberTag = 9;
               break a;
             case REACT_FORWARD_REF_TYPE:
-              fiberTag = 13;
+              fiberTag = 11;
+              break a;
+            case REACT_MEMO_TYPE:
+              fiberTag = 14;
+              break a;
+            case REACT_LAZY_TYPE:
+              fiberTag = 16;
+              owner = null;
               break a;
-            default:
-              if ("function" === typeof type.then) {
-                fiberTag = 4;
-                break a;
-              }
           }
         invariant(
           !1,
@@ -1857,24 +1900,33 @@ function createFiberFromElement(element, mode, expirationTime) {
           ""
         );
     }
-  mode = new FiberNode(fiberTag, element, key, mode);
-  mode.type = type;
-  mode.expirationTime = expirationTime;
-  return mode;
+  key = createFiber(fiberTag, pendingProps, key, mode);
+  key.elementType = type;
+  key.type = owner;
+  key.expirationTime = expirationTime;
+  return key;
 }
 function createFiberFromFragment(elements, mode, expirationTime, key) {
-  elements = new FiberNode(9, elements, key, mode);
+  elements = createFiber(7, elements, key, mode);
   elements.expirationTime = expirationTime;
   return elements;
 }
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  pendingProps = createFiber(8, pendingProps, key, mode);
+  mode = 0 === (mode & 1) ? REACT_STRICT_MODE_TYPE : REACT_CONCURRENT_MODE_TYPE;
+  pendingProps.elementType = mode;
+  pendingProps.type = mode;
+  pendingProps.expirationTime = expirationTime;
+  return pendingProps;
+}
 function createFiberFromText(content, mode, expirationTime) {
-  content = new FiberNode(8, content, null, mode);
+  content = createFiber(6, content, null, mode);
   content.expirationTime = expirationTime;
   return content;
 }
 function createFiberFromPortal(portal, mode, expirationTime) {
-  mode = new FiberNode(
-    6,
+  mode = createFiber(
+    4,
     null !== portal.children ? portal.children : [],
     portal.key,
     mode
@@ -1892,12 +1944,45 @@ function markPendingPriorityLevel(root, expirationTime) {
   var earliestPendingTime = root.earliestPendingTime;
   0 === earliestPendingTime
     ? (root.earliestPendingTime = root.latestPendingTime = expirationTime)
-    : earliestPendingTime > expirationTime
+    : earliestPendingTime < expirationTime
       ? (root.earliestPendingTime = expirationTime)
-      : root.latestPendingTime < expirationTime &&
+      : root.latestPendingTime > expirationTime &&
         (root.latestPendingTime = expirationTime);
   findNextExpirationTimeToWorkOn(expirationTime, root);
 }
+function markSuspendedPriorityLevel(root, suspendedTime) {
+  root.didError = !1;
+  var latestPingedTime = root.latestPingedTime;
+  0 !== latestPingedTime &&
+    latestPingedTime >= suspendedTime &&
+    (root.latestPingedTime = 0);
+  latestPingedTime = root.earliestPendingTime;
+  var latestPendingTime = root.latestPendingTime;
+  latestPingedTime === suspendedTime
+    ? (root.earliestPendingTime =
+        latestPendingTime === suspendedTime
+          ? (root.latestPendingTime = 0)
+          : latestPendingTime)
+    : latestPendingTime === suspendedTime &&
+      (root.latestPendingTime = latestPingedTime);
+  latestPingedTime = root.earliestSuspendedTime;
+  latestPendingTime = root.latestSuspendedTime;
+  0 === latestPingedTime
+    ? (root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime)
+    : latestPingedTime < suspendedTime
+      ? (root.earliestSuspendedTime = suspendedTime)
+      : latestPendingTime > suspendedTime &&
+        (root.latestSuspendedTime = suspendedTime);
+  findNextExpirationTimeToWorkOn(suspendedTime, root);
+}
+function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
+  var earliestPendingTime = root.earliestPendingTime;
+  root = root.earliestSuspendedTime;
+  earliestPendingTime > renderExpirationTime &&
+    (renderExpirationTime = earliestPendingTime);
+  root > renderExpirationTime && (renderExpirationTime = root);
+  return renderExpirationTime;
+}
 function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   var earliestSuspendedTime = root.earliestSuspendedTime,
     latestSuspendedTime = root.latestSuspendedTime,
@@ -1907,12 +1992,11 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
     0 !== earliestPendingTime ? earliestPendingTime : latestPingedTime;
   0 === earliestPendingTime &&
     (0 === completedExpirationTime ||
-      latestSuspendedTime > completedExpirationTime) &&
+      latestSuspendedTime < completedExpirationTime) &&
     (earliestPendingTime = latestSuspendedTime);
   completedExpirationTime = earliestPendingTime;
   0 !== completedExpirationTime &&
-    0 !== earliestSuspendedTime &&
-    earliestSuspendedTime < completedExpirationTime &&
+    earliestSuspendedTime > completedExpirationTime &&
     (completedExpirationTime = earliestSuspendedTime);
   root.nextExpirationTimeToWorkOn = earliestPendingTime;
   root.expirationTime = completedExpirationTime;
@@ -2024,7 +2108,7 @@ function getStateFromUpdate(
           : workInProgress
       );
     case 3:
-      workInProgress.effectTag = (workInProgress.effectTag & -1025) | 64;
+      workInProgress.effectTag = (workInProgress.effectTag & -2049) | 64;
     case 0:
       workInProgress = update.payload;
       nextProps =
@@ -2057,58 +2141,52 @@ function processUpdateQueue(
 
   ) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === newFirstUpdate &&
+    updateExpirationTime < renderExpirationTime
+      ? (null === newFirstUpdate &&
           ((newFirstUpdate = update), (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > updateExpirationTime)
-      )
-        newExpirationTime = updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < updateExpirationTime &&
+          (newExpirationTime = updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastEffect
             ? (queue.firstEffect = queue.lastEffect = update)
             : ((queue.lastEffect.nextEffect = update),
-              (queue.lastEffect = update)));
+              (queue.lastEffect = update))));
     update = update.next;
   }
   updateExpirationTime = null;
   for (update = queue.firstCapturedUpdate; null !== update; ) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === updateExpirationTime &&
+    _updateExpirationTime < renderExpirationTime
+      ? (null === updateExpirationTime &&
           ((updateExpirationTime = update),
           null === newFirstUpdate && (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > _updateExpirationTime)
-      )
-        newExpirationTime = _updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < _updateExpirationTime &&
+          (newExpirationTime = _updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastCapturedEffect
             ? (queue.firstCapturedEffect = queue.lastCapturedEffect = update)
             : ((queue.lastCapturedEffect.nextEffect = update),
-              (queue.lastCapturedEffect = update)));
+              (queue.lastCapturedEffect = update))));
     update = update.next;
   }
   null === newFirstUpdate && (queue.lastUpdate = null);
@@ -2189,7 +2267,7 @@ function readContext(context, observedBits) {
     null === lastContextDependency
       ? (invariant(
           null !== currentlyRenderingFiber,
-          "Context.unstable_read(): Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
+          "Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
         ),
         (currentlyRenderingFiber.firstContextDependency = lastContextDependency = observedBits))
       : (lastContextDependency = lastContextDependency.next = observedBits);
@@ -2265,7 +2343,47 @@ function shallowEqual(objA, objB) {
       return !1;
   return !0;
 }
-var emptyRefsObject = new React.Component().refs;
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    baseProps = Object.assign({}, baseProps);
+    Component = Component.defaultProps;
+    for (var propName in Component)
+      void 0 === baseProps[propName] &&
+        (baseProps[propName] = Component[propName]);
+  }
+  return baseProps;
+}
+function readLazyComponentType(lazyComponent) {
+  var result = lazyComponent._result;
+  switch (lazyComponent._status) {
+    case 1:
+      return result;
+    case 2:
+      throw result;
+    case 0:
+      throw result;
+    default:
+      throw ((lazyComponent._status = 0),
+      (result = lazyComponent._ctor),
+      (result = result()),
+      result.then(
+        function(moduleObject) {
+          0 === lazyComponent._status &&
+            ((moduleObject = moduleObject.default),
+            (lazyComponent._status = 1),
+            (lazyComponent._result = moduleObject));
+        },
+        function(error) {
+          0 === lazyComponent._status &&
+            ((lazyComponent._status = 2), (lazyComponent._result = error));
+        }
+      ),
+      (lazyComponent._result = result),
+      result);
+  }
+}
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner,
+  emptyRefsObject = new React.Component().refs;
 function applyDerivedStateFromProps(
   workInProgress,
   ctor,
@@ -2297,6 +2415,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2308,6 +2427,7 @@ var classComponentUpdater = {
     update.tag = 1;
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2318,6 +2438,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.tag = 2;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   }
@@ -2329,30 +2450,52 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = workInProgress.stateNode;
   return "function" === typeof workInProgress.shouldComponentUpdate
-    ? workInProgress.shouldComponentUpdate(
-        newProps,
-        newState,
-        nextLegacyContext
-      )
+    ? workInProgress.shouldComponentUpdate(newProps, newState, nextContext)
     : ctor.prototype && ctor.prototype.isPureReactComponent
       ? !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState)
       : !0;
 }
+function constructClassInstance(workInProgress, ctor, props) {
+  var isLegacyContextConsumer = !1,
+    unmaskedContext = emptyContextObject;
+  var context = ctor.contextType;
+  "object" === typeof context && null !== context
+    ? (context = ReactCurrentOwner$4.currentDispatcher.readContext(context))
+    : ((unmaskedContext = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (isLegacyContextConsumer = ctor.contextTypes),
+      (context = (isLegacyContextConsumer =
+        null !== isLegacyContextConsumer && void 0 !== isLegacyContextConsumer)
+        ? getMaskedContext(workInProgress, unmaskedContext)
+        : emptyContextObject));
+  ctor = new ctor(props, context);
+  workInProgress.memoizedState =
+    null !== ctor.state && void 0 !== ctor.state ? ctor.state : null;
+  ctor.updater = classComponentUpdater;
+  workInProgress.stateNode = ctor;
+  ctor._reactInternalFiber = workInProgress;
+  isLegacyContextConsumer &&
+    ((workInProgress = workInProgress.stateNode),
+    (workInProgress.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
+    (workInProgress.__reactInternalMemoizedMaskedChildContext = context));
+  return ctor;
+}
 function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = instance.state;
   "function" === typeof instance.componentWillReceiveProps &&
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   "function" === typeof instance.UNSAFE_componentWillReceiveProps &&
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   instance.state !== workInProgress &&
     classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
 }
@@ -2362,32 +2505,32 @@ function mountClassInstance(
   newProps,
   renderExpirationTime
 ) {
-  var instance = workInProgress.stateNode,
-    unmaskedContext = isContextProvider(ctor)
-      ? previousContext
-      : contextStackCursor.current;
+  var instance = workInProgress.stateNode;
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
-  unmaskedContext = workInProgress.updateQueue;
-  null !== unmaskedContext &&
+  var contextType = ctor.contextType;
+  "object" === typeof contextType && null !== contextType
+    ? (instance.context = ReactCurrentOwner$4.currentDispatcher.readContext(
+        contextType
+      ))
+    : ((contextType = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (instance.context = getMaskedContext(workInProgress, contextType)));
+  contextType = workInProgress.updateQueue;
+  null !== contextType &&
     (processUpdateQueue(
       workInProgress,
-      unmaskedContext,
+      contextType,
       newProps,
       instance,
       renderExpirationTime
     ),
     (instance.state = workInProgress.memoizedState));
-  unmaskedContext = ctor.getDerivedStateFromProps;
-  "function" === typeof unmaskedContext &&
-    (applyDerivedStateFromProps(
-      workInProgress,
-      ctor,
-      unmaskedContext,
-      newProps
-    ),
+  contextType = ctor.getDerivedStateFromProps;
+  "function" === typeof contextType &&
+    (applyDerivedStateFromProps(workInProgress, ctor, contextType, newProps),
     (instance.state = workInProgress.memoizedState));
   "function" === typeof ctor.getDerivedStateFromProps ||
     "function" === typeof instance.getSnapshotBeforeUpdate ||
@@ -2400,11 +2543,11 @@ function mountClassInstance(
       instance.UNSAFE_componentWillMount(),
     ctor !== instance.state &&
       classComponentUpdater.enqueueReplaceState(instance, instance.state, null),
-    (unmaskedContext = workInProgress.updateQueue),
-    null !== unmaskedContext &&
+    (contextType = workInProgress.updateQueue),
+    null !== contextType &&
       (processUpdateQueue(
         workInProgress,
-        unmaskedContext,
+        contextType,
         newProps,
         instance,
         renderExpirationTime
@@ -2413,7 +2556,7 @@ function mountClassInstance(
   "function" === typeof instance.componentDidMount &&
     (workInProgress.effectTag |= 4);
 }
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 function coerceRef(returnFiber, current$$1, element) {
   returnFiber = element.ref;
   if (
@@ -2425,10 +2568,7 @@ function coerceRef(returnFiber, current$$1, element) {
       element = element._owner;
       var inst = void 0;
       element &&
-        (invariant(
-          2 === element.tag || 3 === element.tag,
-          "Stateless function components cannot have refs."
-        ),
+        (invariant(1 === element.tag, "Function components cannot have refs."),
         (inst = element.stateNode));
       invariant(
         inst,
@@ -2457,7 +2597,7 @@ function coerceRef(returnFiber, current$$1, element) {
     );
     invariant(
       element._owner,
-      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a functional component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
+      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
       returnFiber
     );
   }
@@ -2533,7 +2673,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     textContent,
     expirationTime
   ) {
-    if (null === current$$1 || 8 !== current$$1.tag)
+    if (null === current$$1 || 6 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromText(
           textContent,
@@ -2548,15 +2688,18 @@ function ChildReconciler(shouldTrackSideEffects) {
     return current$$1;
   }
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (null !== current$$1 && current$$1.type === element.type)
+    if (null !== current$$1 && current$$1.elementType === element.type)
       return (
         (expirationTime = useFiber(current$$1, element.props, expirationTime)),
         (expirationTime.ref = coerceRef(returnFiber, current$$1, element)),
         (expirationTime.return = returnFiber),
         expirationTime
       );
-    expirationTime = createFiberFromElement(
-      element,
+    expirationTime = createFiberFromTypeAndProps(
+      element.type,
+      element.key,
+      element.props,
+      null,
       returnFiber.mode,
       expirationTime
     );
@@ -2567,7 +2710,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   function updatePortal(returnFiber, current$$1, portal, expirationTime) {
     if (
       null === current$$1 ||
-      6 !== current$$1.tag ||
+      4 !== current$$1.tag ||
       current$$1.stateNode.containerInfo !== portal.containerInfo ||
       current$$1.stateNode.implementation !== portal.implementation
     )
@@ -2591,7 +2734,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     expirationTime,
     key
   ) {
-    if (null === current$$1 || 9 !== current$$1.tag)
+    if (null === current$$1 || 7 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromFragment(
           fragment,
@@ -2621,8 +2764,11 @@ function ChildReconciler(shouldTrackSideEffects) {
       switch (newChild.$$typeof) {
         case REACT_ELEMENT_TYPE:
           return (
-            (expirationTime = createFiberFromElement(
-              newChild,
+            (expirationTime = createFiberFromTypeAndProps(
+              newChild.type,
+              newChild.key,
+              newChild.props,
+              null,
               returnFiber.mode,
               expirationTime
             )),
@@ -2641,7 +2787,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             newChild
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (newChild = createFiberFromFragment(
             newChild,
@@ -2681,7 +2827,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ? updatePortal(returnFiber, oldFiber, newChild, expirationTime)
             : null;
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return null !== key
           ? null
           : updateFragment(
@@ -2749,7 +2895,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             )
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (existingChildren = existingChildren.get(newIdx) || null),
           updateFragment(
@@ -2966,9 +3112,9 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (isUnkeyedTopLevelFragment.key === isObject)
                 if (
-                  9 === isUnkeyedTopLevelFragment.tag
+                  7 === isUnkeyedTopLevelFragment.tag
                     ? newChild.type === REACT_FRAGMENT_TYPE
-                    : isUnkeyedTopLevelFragment.type === newChild.type
+                    : isUnkeyedTopLevelFragment.elementType === newChild.type
                 ) {
                   deleteRemainingChildren(
                     returnFiber,
@@ -3008,8 +3154,11 @@ function ChildReconciler(shouldTrackSideEffects) {
                 )),
                 (currentFirstChild.return = returnFiber),
                 (returnFiber = currentFirstChild))
-              : ((expirationTime = createFiberFromElement(
-                  newChild,
+              : ((expirationTime = createFiberFromTypeAndProps(
+                  newChild.type,
+                  newChild.key,
+                  newChild.props,
+                  null,
                   returnFiber.mode,
                   expirationTime
                 )),
@@ -3031,7 +3180,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (currentFirstChild.key === isUnkeyedTopLevelFragment)
                 if (
-                  6 === currentFirstChild.tag &&
+                  4 === currentFirstChild.tag &&
                   currentFirstChild.stateNode.containerInfo ===
                     newChild.containerInfo &&
                   currentFirstChild.stateNode.implementation ===
@@ -3069,7 +3218,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     if ("string" === typeof newChild || "number" === typeof newChild)
       return (
         (newChild = "" + newChild),
-        null !== currentFirstChild && 8 === currentFirstChild.tag
+        null !== currentFirstChild && 6 === currentFirstChild.tag
           ? (deleteRemainingChildren(returnFiber, currentFirstChild.sibling),
             (currentFirstChild = useFiber(
               currentFirstChild,
@@ -3088,7 +3237,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             (returnFiber = currentFirstChild)),
         placeSingleChild(returnFiber)
       );
-    if (isArray$1(newChild))
+    if (isArray(newChild))
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -3105,8 +3254,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     isObject && throwOnInvalidObjectType(returnFiber, newChild);
     if ("undefined" === typeof newChild && !isUnkeyedTopLevelFragment)
       switch (returnFiber.tag) {
-        case 2:
-        case 3:
+        case 1:
         case 0:
           (expirationTime = returnFiber.type),
             invariant(
@@ -3125,12 +3273,12 @@ var reconcileChildFibers = ChildReconciler(!0),
   isHydrating = !1;
 function tryHydrate(fiber, nextInstance) {
   switch (fiber.tag) {
-    case 7:
+    case 5:
       return (
         (nextInstance = shim$1(nextInstance, fiber.type, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
       );
-    case 8:
+    case 6:
       return (
         (nextInstance = shim$1(nextInstance, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
@@ -3153,7 +3301,8 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
           return;
         }
         var returnFiber = hydrationParentFiber,
-          fiber = new FiberNode(7, null, null, 0);
+          fiber = createFiber(5, null, null, 0);
+        fiber.elementType = "DELETED";
         fiber.type = "DELETED";
         fiber.stateNode = firstAttemptedInstance;
         fiber.return = returnFiber;
@@ -3171,38 +3320,6 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
         (hydrationParentFiber = fiber$jscomp$0);
   }
 }
-function readLazyComponentType(thenable) {
-  switch (thenable._reactStatus) {
-    case 1:
-      return thenable._reactResult;
-    case 2:
-      throw thenable._reactResult;
-    case 0:
-      throw thenable;
-    default:
-      throw ((thenable._reactStatus = 0),
-      thenable.then(
-        function(resolvedValue) {
-          if (0 === thenable._reactStatus) {
-            thenable._reactStatus = 1;
-            if ("object" === typeof resolvedValue && null !== resolvedValue) {
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                void 0 !== defaultExport && null !== defaultExport
-                  ? defaultExport
-                  : resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          0 === thenable._reactStatus &&
-            ((thenable._reactStatus = 2), (thenable._reactResult = error));
-        }
-      ),
-      thenable);
-  }
-}
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 function reconcileChildren(
   current$$1,
@@ -3228,26 +3345,108 @@ function reconcileChildren(
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  type = type.render;
+  Component = Component.render;
   var ref = workInProgress.ref;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  nextProps = Component(nextProps, ref);
+  workInProgress.effectTag |= 1;
+  reconcileChildren(
+    current$$1,
+    workInProgress,
+    nextProps,
+    renderExpirationTime
+  );
+  return workInProgress.child;
+}
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (null === current$$1) {
+    var type = Component.type;
+    if (
+      "function" === typeof type &&
+      !shouldConstruct(type) &&
+      void 0 === type.defaultProps &&
+      null === Component.compare &&
+      void 0 === Component.defaultProps
+    )
+      return (
+        (workInProgress.tag = 15),
+        (workInProgress.type = type),
+        updateSimpleMemoComponent(
+          current$$1,
+          workInProgress,
+          type,
+          nextProps,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    current$$1 = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    current$$1.ref = workInProgress.ref;
+    current$$1.return = workInProgress;
+    return (workInProgress.child = current$$1);
+  }
+  type = current$$1.child;
   if (
-    !didPerformWorkStackCursor.current &&
-    workInProgress.memoizedProps === nextProps &&
-    ref === (null !== current$$1 ? current$$1.ref : null)
+    updateExpirationTime < renderExpirationTime &&
+    ((updateExpirationTime = type.memoizedProps),
+    (Component = Component.compare),
+    (Component = null !== Component ? Component : shallowEqual),
+    Component(updateExpirationTime, nextProps) &&
+      current$$1.ref === workInProgress.ref)
   )
     return bailoutOnAlreadyFinishedWork(
       current$$1,
       workInProgress,
       renderExpirationTime
     );
-  type = type(nextProps, ref);
-  reconcileChildren(current$$1, workInProgress, type, renderExpirationTime);
-  workInProgress.memoizedProps = nextProps;
-  return workInProgress.child;
+  workInProgress.effectTag |= 1;
+  current$$1 = createWorkInProgress(type, nextProps, renderExpirationTime);
+  current$$1.ref = workInProgress.ref;
+  current$$1.return = workInProgress;
+  return (workInProgress.child = current$$1);
+}
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  return null !== current$$1 &&
+    updateExpirationTime < renderExpirationTime &&
+    shallowEqual(current$$1.memoizedProps, nextProps) &&
+    current$$1.ref === workInProgress.ref
+    ? bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      )
+    : updateFunctionComponent(
+        current$$1,
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      );
 }
 function markRef(current$$1, workInProgress) {
   var ref = workInProgress.ref;
@@ -3257,7 +3456,7 @@ function markRef(current$$1, workInProgress) {
   )
     workInProgress.effectTag |= 128;
 }
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
@@ -3277,7 +3476,6 @@ function updateFunctionalComponent(
     Component,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = nextProps;
   return workInProgress.child;
 }
 function updateClassComponent(
@@ -3292,154 +3490,152 @@ function updateClassComponent(
     pushContextProvider(workInProgress);
   } else hasContext = !1;
   prepareToReadContext(workInProgress, renderExpirationTime);
-  if (null === current$$1)
-    if (null === workInProgress.stateNode) {
-      var unmaskedContext = isContextProvider(Component)
-          ? previousContext
-          : contextStackCursor.current,
-        contextTypes = Component.contextTypes,
-        isContextConsumer = null !== contextTypes && void 0 !== contextTypes;
-      contextTypes = isContextConsumer
-        ? getMaskedContext(workInProgress, unmaskedContext)
-        : emptyContextObject;
-      var instance = new Component(nextProps, contextTypes);
-      workInProgress.memoizedState =
-        null !== instance.state && void 0 !== instance.state
-          ? instance.state
-          : null;
-      instance.updater = classComponentUpdater;
-      workInProgress.stateNode = instance;
-      instance._reactInternalFiber = workInProgress;
-      isContextConsumer &&
-        ((isContextConsumer = workInProgress.stateNode),
-        (isContextConsumer.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
-        (isContextConsumer.__reactInternalMemoizedMaskedChildContext = contextTypes));
+  if (null === workInProgress.stateNode)
+    null !== current$$1 &&
+      ((current$$1.alternate = null),
+      (workInProgress.alternate = null),
+      (workInProgress.effectTag |= 2)),
+      constructClassInstance(
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      ),
       mountClassInstance(
         workInProgress,
         Component,
         nextProps,
         renderExpirationTime
-      );
-      nextProps = !0;
-    } else {
-      unmaskedContext = workInProgress.stateNode;
-      contextTypes = workInProgress.memoizedProps;
-      unmaskedContext.props = contextTypes;
-      var oldContext = unmaskedContext.context;
-      isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current;
-      isContextConsumer = getMaskedContext(workInProgress, isContextConsumer);
-      var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-      (instance =
+      ),
+      (nextProps = !0);
+  else if (null === current$$1) {
+    var instance = workInProgress.stateNode,
+      oldProps = workInProgress.memoizedProps;
+    instance.props = oldProps;
+    var oldContext = instance.context,
+      contextType = Component.contextType;
+    "object" === typeof contextType && null !== contextType
+      ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+          contextType
+        ))
+      : ((contextType = isContextProvider(Component)
+          ? previousContext
+          : contextStackCursor.current),
+        (contextType = getMaskedContext(workInProgress, contextType)));
+    var getDerivedStateFromProps = Component.getDerivedStateFromProps,
+      hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
-          callComponentWillReceiveProps(
-            workInProgress,
-            unmaskedContext,
-            nextProps,
-            isContextConsumer
-          ));
-      hasForceUpdate = !1;
-      var oldState = workInProgress.memoizedState;
-      oldContext = unmaskedContext.state = oldState;
-      var updateQueue = workInProgress.updateQueue;
-      null !== updateQueue &&
-        (processUpdateQueue(
+        "function" === typeof instance.getSnapshotBeforeUpdate;
+    hasNewLifecycles ||
+      ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+        "function" !== typeof instance.componentWillReceiveProps) ||
+      ((oldProps !== nextProps || oldContext !== contextType) &&
+        callComponentWillReceiveProps(
           workInProgress,
-          updateQueue,
+          instance,
           nextProps,
-          unmaskedContext,
-          renderExpirationTime
-        ),
-        (oldContext = workInProgress.memoizedState));
-      contextTypes !== nextProps ||
-      oldState !== oldContext ||
-      didPerformWorkStackCursor.current ||
-      hasForceUpdate
-        ? ("function" === typeof getDerivedStateFromProps &&
-            (applyDerivedStateFromProps(
-              workInProgress,
-              Component,
-              getDerivedStateFromProps,
-              nextProps
-            ),
-            (oldContext = workInProgress.memoizedState)),
-          (contextTypes =
-            hasForceUpdate ||
-            checkShouldComponentUpdate(
-              workInProgress,
-              Component,
-              contextTypes,
-              nextProps,
-              oldState,
-              oldContext,
-              isContextConsumer
-            ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  "function" !== typeof unmaskedContext.componentWillMount) ||
-                ("function" === typeof unmaskedContext.componentWillMount &&
-                  unmaskedContext.componentWillMount(),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  unmaskedContext.UNSAFE_componentWillMount()),
-              "function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4))
-            : ("function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4),
-              (workInProgress.memoizedProps = nextProps),
-              (workInProgress.memoizedState = oldContext)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldContext),
-          (unmaskedContext.context = isContextConsumer),
-          (nextProps = contextTypes))
-        : ("function" === typeof unmaskedContext.componentDidMount &&
-            (workInProgress.effectTag |= 4),
-          (nextProps = !1));
-    }
-  else
-    (unmaskedContext = workInProgress.stateNode),
-      (contextTypes = workInProgress.memoizedProps),
-      (unmaskedContext.props = contextTypes),
-      (oldContext = unmaskedContext.context),
-      (isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current),
-      (isContextConsumer = getMaskedContext(workInProgress, isContextConsumer)),
+          contextType
+        ));
+    hasForceUpdate = !1;
+    var oldState = workInProgress.memoizedState;
+    oldContext = instance.state = oldState;
+    var updateQueue = workInProgress.updateQueue;
+    null !== updateQueue &&
+      (processUpdateQueue(
+        workInProgress,
+        updateQueue,
+        nextProps,
+        instance,
+        renderExpirationTime
+      ),
+      (oldContext = workInProgress.memoizedState));
+    oldProps !== nextProps ||
+    oldState !== oldContext ||
+    didPerformWorkStackCursor.current ||
+    hasForceUpdate
+      ? ("function" === typeof getDerivedStateFromProps &&
+          (applyDerivedStateFromProps(
+            workInProgress,
+            Component,
+            getDerivedStateFromProps,
+            nextProps
+          ),
+          (oldContext = workInProgress.memoizedState)),
+        (oldProps =
+          hasForceUpdate ||
+          checkShouldComponentUpdate(
+            workInProgress,
+            Component,
+            oldProps,
+            nextProps,
+            oldState,
+            oldContext,
+            contextType
+          ))
+          ? (hasNewLifecycles ||
+              ("function" !== typeof instance.UNSAFE_componentWillMount &&
+                "function" !== typeof instance.componentWillMount) ||
+              ("function" === typeof instance.componentWillMount &&
+                instance.componentWillMount(),
+              "function" === typeof instance.UNSAFE_componentWillMount &&
+                instance.UNSAFE_componentWillMount()),
+            "function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4))
+          : ("function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4),
+            (workInProgress.memoizedProps = nextProps),
+            (workInProgress.memoizedState = oldContext)),
+        (instance.props = nextProps),
+        (instance.state = oldContext),
+        (instance.context = contextType),
+        (nextProps = oldProps))
+      : ("function" === typeof instance.componentDidMount &&
+          (workInProgress.effectTag |= 4),
+        (nextProps = !1));
+  } else
+    (instance = workInProgress.stateNode),
+      (oldProps = workInProgress.memoizedProps),
+      (instance.props =
+        workInProgress.type === workInProgress.elementType
+          ? oldProps
+          : resolveDefaultProps(workInProgress.type, oldProps)),
+      (oldContext = instance.context),
+      (contextType = Component.contextType),
+      "object" === typeof contextType && null !== contextType
+        ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+            contextType
+          ))
+        : ((contextType = isContextProvider(Component)
+            ? previousContext
+            : contextStackCursor.current),
+          (contextType = getMaskedContext(workInProgress, contextType))),
       (getDerivedStateFromProps = Component.getDerivedStateFromProps),
-      (instance =
+      (hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
+        "function" === typeof instance.getSnapshotBeforeUpdate) ||
+        ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+          "function" !== typeof instance.componentWillReceiveProps) ||
+        ((oldProps !== nextProps || oldContext !== contextType) &&
           callComponentWillReceiveProps(
             workInProgress,
-            unmaskedContext,
+            instance,
             nextProps,
-            isContextConsumer
+            contextType
           )),
       (hasForceUpdate = !1),
       (oldContext = workInProgress.memoizedState),
-      (oldState = unmaskedContext.state = oldContext),
+      (oldState = instance.state = oldContext),
       (updateQueue = workInProgress.updateQueue),
       null !== updateQueue &&
         (processUpdateQueue(
           workInProgress,
           updateQueue,
           nextProps,
-          unmaskedContext,
+          instance,
           renderExpirationTime
         ),
         (oldState = workInProgress.memoizedState)),
-      contextTypes !== nextProps ||
+      oldProps !== nextProps ||
       oldContext !== oldState ||
       didPerformWorkStackCursor.current ||
       hasForceUpdate
@@ -3456,53 +3652,51 @@ function updateClassComponent(
             checkShouldComponentUpdate(
               workInProgress,
               Component,
-              contextTypes,
+              oldProps,
               nextProps,
               oldContext,
               oldState,
-              isContextConsumer
+              contextType
             ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  "function" !== typeof unmaskedContext.componentWillUpdate) ||
-                ("function" === typeof unmaskedContext.componentWillUpdate &&
-                  unmaskedContext.componentWillUpdate(
+            ? (hasNewLifecycles ||
+                ("function" !== typeof instance.UNSAFE_componentWillUpdate &&
+                  "function" !== typeof instance.componentWillUpdate) ||
+                ("function" === typeof instance.componentWillUpdate &&
+                  instance.componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   ),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  unmaskedContext.UNSAFE_componentWillUpdate(
+                "function" === typeof instance.UNSAFE_componentWillUpdate &&
+                  instance.UNSAFE_componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   )),
-              "function" === typeof unmaskedContext.componentDidUpdate &&
+              "function" === typeof instance.componentDidUpdate &&
                 (workInProgress.effectTag |= 4),
-              "function" === typeof unmaskedContext.getSnapshotBeforeUpdate &&
+              "function" === typeof instance.getSnapshotBeforeUpdate &&
                 (workInProgress.effectTag |= 256))
-            : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+            : ("function" !== typeof instance.componentDidUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 4),
-              "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+              "function" !== typeof instance.getSnapshotBeforeUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 256),
               (workInProgress.memoizedProps = nextProps),
               (workInProgress.memoizedState = oldState)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldState),
-          (unmaskedContext.context = isContextConsumer),
+          (instance.props = nextProps),
+          (instance.state = oldState),
+          (instance.context = contextType),
           (nextProps = getDerivedStateFromProps))
-        : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+        : ("function" !== typeof instance.componentDidUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 4),
-          "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+          "function" !== typeof instance.getSnapshotBeforeUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 256),
           (nextProps = !1));
@@ -3536,20 +3730,31 @@ function finishClassComponent(
     );
   shouldUpdate = workInProgress.stateNode;
   ReactCurrentOwner$3.current = workInProgress;
-  var nextChildren = didCaptureError ? null : shouldUpdate.render();
+  var nextChildren =
+    didCaptureError && "function" !== typeof Component.getDerivedStateFromError
+      ? null
+      : shouldUpdate.render();
   workInProgress.effectTag |= 1;
-  null !== current$$1 &&
-    didCaptureError &&
-    (reconcileChildren(current$$1, workInProgress, null, renderExpirationTime),
-    (workInProgress.child = null));
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
+  null !== current$$1 && didCaptureError
+    ? ((workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        current$$1.child,
+        null,
+        renderExpirationTime
+      )),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        null,
+        nextChildren,
+        renderExpirationTime
+      )))
+    : reconcileChildren(
+        current$$1,
+        workInProgress,
+        nextChildren,
+        renderExpirationTime
+      );
   workInProgress.memoizedState = shouldUpdate.state;
-  workInProgress.memoizedProps = shouldUpdate.props;
   hasContext && invalidateContextProvider(workInProgress, Component, !0);
   return workInProgress.child;
 }
@@ -3565,131 +3770,101 @@ function pushHostRootContext(workInProgress) {
       pushTopLevelContextObject(workInProgress, root.context, !1);
   pushHostContainer(workInProgress, root.containerInfo);
 }
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    baseProps = Object.assign({}, baseProps);
-    Component = Component.defaultProps;
-    for (var propName in Component)
-      void 0 === baseProps[propName] &&
-        (baseProps[propName] = Component[propName]);
-  }
-  return baseProps;
-}
-function mountIndeterminateComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
-  Component,
   renderExpirationTime
 ) {
-  invariant(
-    null === current$$1,
-    "An indeterminate component should never have mounted. This error is likely caused by a bug in React. Please file an issue."
-  );
-  var props = workInProgress.pendingProps;
-  if (
-    "object" === typeof Component &&
-    null !== Component &&
-    "function" === typeof Component.then
-  ) {
-    Component = readLazyComponentType(Component);
-    var JSCompiler_inline_result = Component;
-    JSCompiler_inline_result =
-      "function" === typeof JSCompiler_inline_result
-        ? shouldConstruct(JSCompiler_inline_result)
-          ? 3
-          : 1
-        : void 0 !== JSCompiler_inline_result &&
-          null !== JSCompiler_inline_result &&
-          JSCompiler_inline_result.$$typeof
-          ? 14
-          : 4;
-    JSCompiler_inline_result = workInProgress.tag = JSCompiler_inline_result;
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (JSCompiler_inline_result) {
-      case 1:
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 3:
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 14:
-        return updateForwardRef(
-          current$$1,
+  var mode = workInProgress.mode,
+    nextProps = workInProgress.pendingProps,
+    nextState = workInProgress.memoizedState;
+  if (0 === (workInProgress.effectTag & 64)) {
+    nextState = null;
+    var nextDidTimeout = !1;
+  } else
+    (nextState = { timedOutAt: null !== nextState ? nextState.timedOutAt : 0 }),
+      (nextDidTimeout = !0),
+      (workInProgress.effectTag &= -65);
+  null === current$$1
+    ? nextDidTimeout
+      ? ((nextDidTimeout = nextProps.fallback),
+        (nextProps = createFiberFromFragment(null, mode, 0, null)),
+        0 === (workInProgress.mode & 1) &&
+          (nextProps.child =
+            null !== workInProgress.memoizedState
+              ? workInProgress.child.child
+              : workInProgress.child),
+        (mode = createFiberFromFragment(
+          nextDidTimeout,
+          mode,
+          renderExpirationTime,
+          null
+        )),
+        (nextProps.sibling = mode),
+        (renderExpirationTime = nextProps),
+        (renderExpirationTime.return = mode.return = workInProgress))
+      : (renderExpirationTime = mode = mountChildFibers(
           workInProgress,
-          Component,
-          resolvedProps,
+          null,
+          nextProps.children,
           renderExpirationTime
-        );
-      default:
-        invariant(
-          !1,
-          "Element type is invalid. Received a promise that resolves to: %s. Promise elements must resolve to a class or function.",
-          Component
-        );
-    }
-  }
-  JSCompiler_inline_result = getMaskedContext(
-    workInProgress,
-    contextStackCursor.current
-  );
-  prepareToReadContext(workInProgress, renderExpirationTime);
-  JSCompiler_inline_result = Component(props, JSCompiler_inline_result);
-  workInProgress.effectTag |= 1;
-  if (
-    "object" === typeof JSCompiler_inline_result &&
-    null !== JSCompiler_inline_result &&
-    "function" === typeof JSCompiler_inline_result.render &&
-    void 0 === JSCompiler_inline_result.$$typeof
-  ) {
-    workInProgress.tag = 2;
-    isContextProvider(Component)
-      ? ((resolvedProps = !0), pushContextProvider(workInProgress))
-      : (resolvedProps = !1);
-    workInProgress.memoizedState =
-      null !== JSCompiler_inline_result.state &&
-      void 0 !== JSCompiler_inline_result.state
-        ? JSCompiler_inline_result.state
-        : null;
-    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-    "function" === typeof getDerivedStateFromProps &&
-      applyDerivedStateFromProps(
-        workInProgress,
-        Component,
-        getDerivedStateFromProps,
-        props
-      );
-    JSCompiler_inline_result.updater = classComponentUpdater;
-    workInProgress.stateNode = JSCompiler_inline_result;
-    JSCompiler_inline_result._reactInternalFiber = workInProgress;
-    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
-    return finishClassComponent(
-      current$$1,
-      workInProgress,
-      Component,
-      !0,
-      resolvedProps,
-      renderExpirationTime
-    );
-  }
-  workInProgress.tag = 0;
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    JSCompiler_inline_result,
-    renderExpirationTime
-  );
-  workInProgress.memoizedProps = props;
-  return workInProgress.child;
+        ))
+    : null !== current$$1.memoizedState
+      ? ((mode = current$$1.child),
+        (current$$1 = mode.sibling),
+        nextDidTimeout
+          ? ((renderExpirationTime = nextProps.fallback),
+            (nextProps = createWorkInProgress(mode, mode.pendingProps, 0)),
+            0 === (workInProgress.mode & 1) &&
+              ((nextDidTimeout =
+                null !== workInProgress.memoizedState
+                  ? workInProgress.child.child
+                  : workInProgress.child),
+              nextDidTimeout !== mode.child &&
+                (nextProps.child = nextDidTimeout)),
+            (mode = nextProps.sibling = createWorkInProgress(
+              current$$1,
+              renderExpirationTime,
+              current$$1.expirationTime
+            )),
+            (renderExpirationTime = nextProps),
+            (nextProps.childExpirationTime = 0),
+            (renderExpirationTime.return = mode.return = workInProgress))
+          : (renderExpirationTime = mode = reconcileChildFibers(
+              workInProgress,
+              mode.child,
+              nextProps.children,
+              renderExpirationTime
+            )))
+      : ((current$$1 = current$$1.child),
+        nextDidTimeout
+          ? ((nextDidTimeout = nextProps.fallback),
+            (nextProps = createFiberFromFragment(null, mode, 0, null)),
+            (nextProps.child = current$$1),
+            0 === (workInProgress.mode & 1) &&
+              (nextProps.child =
+                null !== workInProgress.memoizedState
+                  ? workInProgress.child.child
+                  : workInProgress.child),
+            (mode = nextProps.sibling = createFiberFromFragment(
+              nextDidTimeout,
+              mode,
+              renderExpirationTime,
+              null
+            )),
+            (mode.effectTag |= 2),
+            (renderExpirationTime = nextProps),
+            (nextProps.childExpirationTime = 0),
+            (renderExpirationTime.return = mode.return = workInProgress))
+          : (mode = renderExpirationTime = reconcileChildFibers(
+              workInProgress,
+              current$$1,
+              nextProps.children,
+              renderExpirationTime
+            )));
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = renderExpirationTime;
+  return mode;
 }
 function bailoutOnAlreadyFinishedWork(
   current$$1,
@@ -3698,9 +3873,7 @@ function bailoutOnAlreadyFinishedWork(
 ) {
   null !== current$$1 &&
     (workInProgress.firstContextDependency = current$$1.firstContextDependency);
-  var childExpirationTime = workInProgress.childExpirationTime;
-  if (0 === childExpirationTime || childExpirationTime > renderExpirationTime)
-    return null;
+  if (workInProgress.childExpirationTime < renderExpirationTime) return null;
   invariant(
     null === current$$1 || workInProgress.child === current$$1.child,
     "Resuming work not yet implemented."
@@ -3732,32 +3905,50 @@ function bailoutOnAlreadyFinishedWork(
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
   if (
+    null !== current$$1 &&
+    current$$1.memoizedProps === workInProgress.pendingProps &&
     !didPerformWorkStackCursor.current &&
-    (0 === updateExpirationTime || updateExpirationTime > renderExpirationTime)
+    updateExpirationTime < renderExpirationTime
   ) {
     switch (workInProgress.tag) {
-      case 5:
+      case 3:
         pushHostRootContext(workInProgress);
         break;
-      case 7:
+      case 5:
         pushHostContext(workInProgress);
         break;
-      case 2:
+      case 1:
         isContextProvider(workInProgress.type) &&
           pushContextProvider(workInProgress);
         break;
-      case 3:
-        isContextProvider(workInProgress.type._reactResult) &&
-          pushContextProvider(workInProgress);
-        break;
-      case 6:
+      case 4:
         pushHostContainer(
           workInProgress,
           workInProgress.stateNode.containerInfo
         );
         break;
-      case 12:
+      case 10:
         pushProvider(workInProgress, workInProgress.memoizedProps.value);
+        break;
+      case 13:
+        if (null !== workInProgress.memoizedState) {
+          updateExpirationTime = workInProgress.child.childExpirationTime;
+          if (
+            0 !== updateExpirationTime &&
+            updateExpirationTime >= renderExpirationTime
+          )
+            return updateSuspenseComponent(
+              current$$1,
+              workInProgress,
+              renderExpirationTime
+            );
+          workInProgress = bailoutOnAlreadyFinishedWork(
+            current$$1,
+            workInProgress,
+            renderExpirationTime
+          );
+          return null !== workInProgress ? workInProgress.sibling : null;
+        }
     }
     return bailoutOnAlreadyFinishedWork(
       current$$1,
@@ -3767,56 +3958,163 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
   }
   workInProgress.expirationTime = 0;
   switch (workInProgress.tag) {
-    case 4:
-      return mountIndeterminateComponent(
-        current$$1,
+    case 2:
+      updateExpirationTime = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      current$$1 = workInProgress.pendingProps;
+      var context = getMaskedContext(
         workInProgress,
-        workInProgress.type,
-        renderExpirationTime
+        contextStackCursor.current
       );
+      prepareToReadContext(workInProgress, renderExpirationTime);
+      context = updateExpirationTime(current$$1, context);
+      workInProgress.effectTag |= 1;
+      if (
+        "object" === typeof context &&
+        null !== context &&
+        "function" === typeof context.render &&
+        void 0 === context.$$typeof
+      ) {
+        workInProgress.tag = 1;
+        if (isContextProvider(updateExpirationTime)) {
+          var hasContext = !0;
+          pushContextProvider(workInProgress);
+        } else hasContext = !1;
+        workInProgress.memoizedState =
+          null !== context.state && void 0 !== context.state
+            ? context.state
+            : null;
+        var getDerivedStateFromProps =
+          updateExpirationTime.getDerivedStateFromProps;
+        "function" === typeof getDerivedStateFromProps &&
+          applyDerivedStateFromProps(
+            workInProgress,
+            updateExpirationTime,
+            getDerivedStateFromProps,
+            current$$1
+          );
+        context.updater = classComponentUpdater;
+        workInProgress.stateNode = context;
+        context._reactInternalFiber = workInProgress;
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          current$$1,
+          renderExpirationTime
+        );
+        workInProgress = finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          hasContext,
+          renderExpirationTime
+        );
+      } else
+        (workInProgress.tag = 0),
+          reconcileChildren(
+            null,
+            workInProgress,
+            context,
+            renderExpirationTime
+          ),
+          (workInProgress = workInProgress.child);
+      return workInProgress;
+    case 16:
+      context = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      hasContext = workInProgress.pendingProps;
+      current$$1 = readLazyComponentType(context);
+      workInProgress.type = current$$1;
+      context = workInProgress.tag = resolveLazyComponentTag(current$$1);
+      hasContext = resolveDefaultProps(current$$1, hasContext);
+      getDerivedStateFromProps = void 0;
+      switch (context) {
+        case 0:
+          getDerivedStateFromProps = updateFunctionComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 1:
+          getDerivedStateFromProps = updateClassComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 11:
+          getDerivedStateFromProps = updateForwardRef(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 14:
+          getDerivedStateFromProps = updateMemoComponent(
+            null,
+            workInProgress,
+            current$$1,
+            resolveDefaultProps(current$$1.type, hasContext),
+            updateExpirationTime,
+            renderExpirationTime
+          );
+          break;
+        default:
+          invariant(
+            !1,
+            "Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",
+            current$$1,
+            ""
+          );
+      }
+      return getDerivedStateFromProps;
     case 0:
-      return updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateFunctionComponent(
+          current$$1,
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        )
       );
     case 1:
-      var _Component5 = workInProgress.type._reactResult;
-      updateExpirationTime = workInProgress.pendingProps;
-      current$$1 = updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, updateExpirationTime),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = updateExpirationTime;
-      return current$$1;
-    case 2:
-      return updateClassComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 3:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateClassComponent(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateClassComponent(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 5:
+    case 3:
       return (
         pushHostRootContext(workInProgress),
         (updateExpirationTime = workInProgress.updateQueue),
@@ -3824,8 +4122,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           null !== updateExpirationTime,
           "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue."
         ),
-        (_Component5 = workInProgress.memoizedState),
-        (_Component5 = null !== _Component5 ? _Component5.element : null),
+        (context = workInProgress.memoizedState),
+        (context = null !== context ? context.element : null),
         processUpdateQueue(
           workInProgress,
           updateExpirationTime,
@@ -3834,7 +4132,7 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           renderExpirationTime
         ),
         (updateExpirationTime = workInProgress.memoizedState.element),
-        updateExpirationTime === _Component5
+        updateExpirationTime === context
           ? (workInProgress = bailoutOnAlreadyFinishedWork(
               current$$1,
               workInProgress,
@@ -3849,32 +4147,33 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             (workInProgress = workInProgress.child)),
         workInProgress
       );
-    case 7:
+    case 5:
       return (
         pushHostContext(workInProgress),
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (updateExpirationTime = workInProgress.pendingProps.children),
         markRef(current$$1, workInProgress),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         (workInProgress = workInProgress.child),
         workInProgress
       );
-    case 8:
+    case 6:
       return (
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (workInProgress.memoizedProps = workInProgress.pendingProps),
         null
       );
-    case 16:
-      return null;
-    case 6:
+    case 13:
+      return updateSuspenseComponent(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    case 4:
       return (
         pushHostContainer(
           workInProgress,
@@ -3894,92 +4193,78 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
               updateExpirationTime,
               renderExpirationTime
             ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 13:
-      return updateForwardRef(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 14:
+    case 11:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateForwardRef(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateForwardRef(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 9:
+    case 7:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 10:
+    case 8:
       return (
-        (updateExpirationTime = workInProgress.pendingProps.children),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 15:
+    case 12:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime.children,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 12:
+    case 10:
       a: {
         updateExpirationTime = workInProgress.type._context;
-        _Component5 = workInProgress.pendingProps;
-        var oldProps = workInProgress.memoizedProps,
-          newValue = _Component5.value;
-        workInProgress.memoizedProps = _Component5;
-        pushProvider(workInProgress, newValue);
-        if (null !== oldProps) {
-          var oldValue = oldProps.value;
-          newValue =
-            (oldValue === newValue &&
-              (0 !== oldValue || 1 / oldValue === 1 / newValue)) ||
-            (oldValue !== oldValue && newValue !== newValue)
+        context = workInProgress.pendingProps;
+        getDerivedStateFromProps = workInProgress.memoizedProps;
+        hasContext = context.value;
+        pushProvider(workInProgress, hasContext);
+        if (null !== getDerivedStateFromProps) {
+          var oldValue = getDerivedStateFromProps.value;
+          hasContext =
+            (oldValue === hasContext &&
+              (0 !== oldValue || 1 / oldValue === 1 / hasContext)) ||
+            (oldValue !== oldValue && hasContext !== hasContext)
               ? 0
               : ("function" ===
                 typeof updateExpirationTime._calculateChangedBits
                   ? updateExpirationTime._calculateChangedBits(
                       oldValue,
-                      newValue
+                      hasContext
                     )
                   : 1073741823) | 0;
-          if (0 === newValue) {
+          if (0 === hasContext) {
             if (
-              oldProps.children === _Component5.children &&
+              getDerivedStateFromProps.children === context.children &&
               !didPerformWorkStackCursor.current
             ) {
               workInProgress = bailoutOnAlreadyFinishedWork(
@@ -3991,113 +4276,175 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             }
           } else
             for (
-              oldProps = workInProgress.child,
-                null !== oldProps && (oldProps.return = workInProgress);
-              null !== oldProps;
+              getDerivedStateFromProps = workInProgress.child,
+                null !== getDerivedStateFromProps &&
+                  (getDerivedStateFromProps.return = workInProgress);
+              null !== getDerivedStateFromProps;
 
             ) {
-              oldValue = oldProps.firstContextDependency;
+              oldValue = getDerivedStateFromProps.firstContextDependency;
               if (null !== oldValue) {
                 do {
                   if (
                     oldValue.context === updateExpirationTime &&
-                    0 !== (oldValue.observedBits & newValue)
+                    0 !== (oldValue.observedBits & hasContext)
                   ) {
-                    if (2 === oldProps.tag || 3 === oldProps.tag) {
+                    if (1 === getDerivedStateFromProps.tag) {
                       var nextFiber = createUpdate(renderExpirationTime);
                       nextFiber.tag = 2;
-                      enqueueUpdate(oldProps, nextFiber);
+                      enqueueUpdate(getDerivedStateFromProps, nextFiber);
                     }
-                    if (
-                      0 === oldProps.expirationTime ||
-                      oldProps.expirationTime > renderExpirationTime
-                    )
-                      oldProps.expirationTime = renderExpirationTime;
-                    nextFiber = oldProps.alternate;
+                    getDerivedStateFromProps.expirationTime <
+                      renderExpirationTime &&
+                      (getDerivedStateFromProps.expirationTime = renderExpirationTime);
+                    nextFiber = getDerivedStateFromProps.alternate;
                     null !== nextFiber &&
-                      (0 === nextFiber.expirationTime ||
-                        nextFiber.expirationTime > renderExpirationTime) &&
+                      nextFiber.expirationTime < renderExpirationTime &&
                       (nextFiber.expirationTime = renderExpirationTime);
-                    for (var node = oldProps.return; null !== node; ) {
+                    for (
+                      var node = getDerivedStateFromProps.return;
+                      null !== node;
+
+                    ) {
                       nextFiber = node.alternate;
-                      if (
-                        0 === node.childExpirationTime ||
-                        node.childExpirationTime > renderExpirationTime
-                      )
+                      if (node.childExpirationTime < renderExpirationTime)
                         (node.childExpirationTime = renderExpirationTime),
                           null !== nextFiber &&
-                            (0 === nextFiber.childExpirationTime ||
-                              nextFiber.childExpirationTime >
-                                renderExpirationTime) &&
+                            nextFiber.childExpirationTime <
+                              renderExpirationTime &&
                             (nextFiber.childExpirationTime = renderExpirationTime);
                       else if (
                         null !== nextFiber &&
-                        (0 === nextFiber.childExpirationTime ||
-                          nextFiber.childExpirationTime > renderExpirationTime)
+                        nextFiber.childExpirationTime < renderExpirationTime
                       )
                         nextFiber.childExpirationTime = renderExpirationTime;
                       else break;
                       node = node.return;
                     }
                   }
-                  nextFiber = oldProps.child;
+                  nextFiber = getDerivedStateFromProps.child;
                   oldValue = oldValue.next;
                 } while (null !== oldValue);
               } else
                 nextFiber =
-                  12 === oldProps.tag
-                    ? oldProps.type === workInProgress.type
+                  10 === getDerivedStateFromProps.tag
+                    ? getDerivedStateFromProps.type === workInProgress.type
                       ? null
-                      : oldProps.child
-                    : oldProps.child;
-              if (null !== nextFiber) nextFiber.return = oldProps;
+                      : getDerivedStateFromProps.child
+                    : getDerivedStateFromProps.child;
+              if (null !== nextFiber)
+                nextFiber.return = getDerivedStateFromProps;
               else
-                for (nextFiber = oldProps; null !== nextFiber; ) {
+                for (
+                  nextFiber = getDerivedStateFromProps;
+                  null !== nextFiber;
+
+                ) {
                   if (nextFiber === workInProgress) {
                     nextFiber = null;
                     break;
                   }
-                  oldProps = nextFiber.sibling;
-                  if (null !== oldProps) {
-                    oldProps.return = nextFiber.return;
-                    nextFiber = oldProps;
+                  getDerivedStateFromProps = nextFiber.sibling;
+                  if (null !== getDerivedStateFromProps) {
+                    getDerivedStateFromProps.return = nextFiber.return;
+                    nextFiber = getDerivedStateFromProps;
                     break;
                   }
                   nextFiber = nextFiber.return;
                 }
-              oldProps = nextFiber;
+              getDerivedStateFromProps = nextFiber;
             }
         }
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5.children,
+          context.children,
           renderExpirationTime
         );
         workInProgress = workInProgress.child;
       }
       return workInProgress;
-    case 11:
+    case 9:
       return (
-        (newValue = workInProgress.type),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (context = workInProgress.type),
+        (hasContext = workInProgress.pendingProps),
+        (updateExpirationTime = hasContext.children),
         prepareToReadContext(workInProgress, renderExpirationTime),
-        (newValue = readContext(
-          newValue,
-          updateExpirationTime.unstable_observedBits
-        )),
-        (_Component5 = _Component5(newValue)),
+        (context = readContext(context, hasContext.unstable_observedBits)),
+        (updateExpirationTime = updateExpirationTime(context)),
         (workInProgress.effectTag |= 1),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
+    case 14:
+      return (
+        (context = workInProgress.type),
+        (hasContext = resolveDefaultProps(
+          context,
+          workInProgress.pendingProps
+        )),
+        (hasContext = resolveDefaultProps(context.type, hasContext)),
+        updateMemoComponent(
+          current$$1,
+          workInProgress,
+          context,
+          hasContext,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    case 15:
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    case 17:
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        null !== current$$1 &&
+          ((current$$1.alternate = null),
+          (workInProgress.alternate = null),
+          (workInProgress.effectTag |= 2)),
+        (workInProgress.tag = 1),
+        isContextProvider(updateExpirationTime)
+          ? ((current$$1 = !0), pushContextProvider(workInProgress))
+          : (current$$1 = !1),
+        prepareToReadContext(workInProgress, renderExpirationTime),
+        constructClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          current$$1,
+          renderExpirationTime
+        )
+      );
     default:
       invariant(
         !1,
@@ -4105,14 +4452,113 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
   }
 }
-function appendAllChildren(parent, workInProgress) {
+var appendAllChildren = void 0,
+  updateHostContainer = void 0,
+  updateHostComponent$1 = void 0,
+  updateHostText$1 = void 0;
+appendAllChildren = function(
+  parent,
+  workInProgress,
+  needsVisibilityToggle,
+  isHidden
+) {
   for (var node = workInProgress.child; null !== node; ) {
-    if (7 === node.tag || 8 === node.tag)
-      FabricUIManager.appendChild(parent.node, node.stateNode.node);
-    else if (6 !== node.tag && null !== node.child) {
-      node.child.return = node;
-      node = node.child;
-      continue;
+    a: if (5 === node.tag) {
+      var instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        var props = node.memoizedProps,
+          type = node.type;
+        instance = isHidden
+          ? cloneHiddenInstance(instance, type, props, node)
+          : cloneUnhiddenInstance(instance, type, props, node);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChild(parent.node, instance.node);
+    } else if (6 === node.tag) {
+      instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        instance = node.memoizedProps;
+        props = requiredContext(rootInstanceStackCursor.current);
+        type = requiredContext(contextStackCursor$1.current);
+        if (isHidden) throw Error("Not yet implemented.");
+        instance = createTextInstance(instance, props, type, workInProgress);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChild(parent.node, instance.node);
+    } else if (4 !== node.tag) {
+      if (
+        13 === node.tag &&
+        ((props = node.alternate),
+        null !== props &&
+          ((instance = null !== node.memoizedState),
+          (null !== props.memoizedState) !== instance))
+      ) {
+        props = instance ? node.child : node;
+        null !== props && appendAllChildren(parent, props, !0, instance);
+        break a;
+      }
+      if (null !== node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+    }
+    if (node === workInProgress) break;
+    for (; null === node.sibling; ) {
+      if (null === node.return || node.return === workInProgress) return;
+      node = node.return;
+    }
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+};
+function appendAllChildrenToContainer(
+  containerChildSet,
+  workInProgress,
+  needsVisibilityToggle,
+  isHidden
+) {
+  for (var node = workInProgress.child; null !== node; ) {
+    a: if (5 === node.tag) {
+      var instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        var props = node.memoizedProps,
+          type = node.type;
+        instance = isHidden
+          ? cloneHiddenInstance(instance, type, props, node)
+          : cloneUnhiddenInstance(instance, type, props, node);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChildToSet(containerChildSet, instance.node);
+    } else if (6 === node.tag) {
+      instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        instance = node.memoizedProps;
+        props = requiredContext(rootInstanceStackCursor.current);
+        type = requiredContext(contextStackCursor$1.current);
+        if (isHidden) throw Error("Not yet implemented.");
+        instance = createTextInstance(instance, props, type, workInProgress);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChildToSet(containerChildSet, instance.node);
+    } else if (4 !== node.tag) {
+      if (
+        13 === node.tag &&
+        ((props = node.alternate),
+        null !== props &&
+          ((instance = null !== node.memoizedState),
+          (null !== props.memoizedState) !== instance))
+      ) {
+        props = instance ? node.child : node;
+        null !== props &&
+          appendAllChildrenToContainer(containerChildSet, props, !0, instance);
+        break a;
+      }
+      if (null !== node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
     }
     if (node === workInProgress) break;
     for (; null === node.sibling; ) {
@@ -4123,30 +4569,12 @@ function appendAllChildren(parent, workInProgress) {
     node = node.sibling;
   }
 }
-var updateHostContainer = void 0,
-  updateHostComponent$1 = void 0,
-  updateHostText$1 = void 0;
 updateHostContainer = function(workInProgress) {
   var portalOrRoot = workInProgress.stateNode;
   if (null !== workInProgress.firstEffect) {
     var container = portalOrRoot.containerInfo,
       newChildSet = FabricUIManager.createChildSet(container);
-    a: for (var node = workInProgress.child; null !== node; ) {
-      if (7 === node.tag || 8 === node.tag)
-        FabricUIManager.appendChildToSet(newChildSet, node.stateNode.node);
-      else if (6 !== node.tag && null !== node.child) {
-        node.child.return = node;
-        node = node.child;
-        continue;
-      }
-      if (node === workInProgress) break a;
-      for (; null === node.sibling; ) {
-        if (null === node.return || node.return === workInProgress) break a;
-        node = node.return;
-      }
-      node.sibling.return = node.return;
-      node = node.sibling;
-    }
+    appendAllChildrenToContainer(newChildSet, workInProgress, !1, !1);
     portalOrRoot.pendingChildren = newChildSet;
     workInProgress.effectTag |= 4;
     FabricUIManager.completeRoot(container, newChildSet);
@@ -4193,7 +4621,7 @@ updateHostComponent$1 = function(current, workInProgress, type, newProps) {
         (workInProgress.stateNode = type),
         current
           ? (workInProgress.effectTag |= 4)
-          : appendAllChildren(type, workInProgress));
+          : appendAllChildren(type, workInProgress, !1, !1));
   }
 };
 updateHostText$1 = function(current, workInProgress, oldText, newText) {
@@ -4243,7 +4671,7 @@ function logError(boundary, errorInfo) {
     willRetry: !1
   };
   null !== boundary &&
-    2 === boundary.tag &&
+    1 === boundary.tag &&
     ((errorInfo.errorBoundary = boundary.stateNode),
     (errorInfo.errorBoundaryName = getComponentName(boundary.type)),
     (errorInfo.errorBoundaryFound = !0),
@@ -4269,16 +4697,22 @@ function safelyDetachRef(current$$1) {
 }
 function commitWork(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case 2:
-    case 3:
-      break;
-    case 7:
-      break;
-    case 8:
+    case 0:
+    case 11:
+    case 14:
+    case 15:
+      return;
+  }
+  switch (finishedWork.tag) {
+    case 1:
       break;
     case 5:
+      break;
     case 6:
       break;
+    case 3:
+    case 4:
+      break;
     default:
       invariant(
         !1,
@@ -4300,13 +4734,21 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   expirationTime = createUpdate(expirationTime);
   expirationTime.tag = 3;
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if ("function" === typeof getDerivedStateFromError) {
+    var error$jscomp$0 = errorInfo.value;
+    expirationTime.payload = function() {
+      return getDerivedStateFromError(error$jscomp$0);
+    };
+  }
   var inst = fiber.stateNode;
   null !== inst &&
     "function" === typeof inst.componentDidCatch &&
     (expirationTime.callback = function() {
-      null === legacyErrorBoundariesThatAlreadyFailed
-        ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
-        : legacyErrorBoundariesThatAlreadyFailed.add(this);
+      "function" !== typeof getDerivedStateFromError &&
+        (null === legacyErrorBoundariesThatAlreadyFailed
+          ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
+          : legacyErrorBoundariesThatAlreadyFailed.add(this));
       var error = errorInfo.value,
         stack = errorInfo.stack;
       logError(fiber, errorInfo);
@@ -4318,24 +4760,14 @@ function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
 }
 function unwindWork(workInProgress) {
   switch (workInProgress.tag) {
-    case 2:
+    case 1:
       isContextProvider(workInProgress.type) && popContext(workInProgress);
       var effectTag = workInProgress.effectTag;
-      return effectTag & 1024
-        ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+      return effectTag & 2048
+        ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
           workInProgress)
         : null;
     case 3:
-      return (
-        isContextProvider(workInProgress.type._reactResult) &&
-          popContext(workInProgress),
-        (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
-            workInProgress)
-          : null
-      );
-    case 5:
       return (
         popHostContainer(workInProgress),
         popTopLevelContextObject(workInProgress),
@@ -4344,36 +4776,39 @@ function unwindWork(workInProgress) {
           0 === (effectTag & 64),
           "The root failed to unmount after an error. This is likely a bug in React. Please file an issue."
         ),
-        (workInProgress.effectTag = (effectTag & -1025) | 64),
+        (workInProgress.effectTag = (effectTag & -2049) | 64),
         workInProgress
       );
-    case 7:
+    case 5:
       return popHostContext(workInProgress), null;
-    case 16:
+    case 13:
       return (
         (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+        effectTag & 2048
+          ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
             workInProgress)
           : null
       );
-    case 6:
+    case 4:
       return popHostContainer(workInProgress), null;
-    case 12:
+    case 10:
       return popProvider(workInProgress), null;
     default:
       return null;
   }
 }
-var Dispatcher = { readContext: readContext },
+var DispatcherWithoutHooks = { readContext: readContext },
   ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner,
   isWorking = !1,
   nextUnitOfWork = null,
   nextRoot = null,
   nextRenderExpirationTime = 0,
+  nextLatestAbsoluteTimeoutMs = -1,
   nextRenderDidError = !1,
   nextEffect = null,
   isCommitting$1 = !1,
+  passiveEffectCallbackHandle = null,
+  passiveEffectCallback = null,
   legacyErrorBoundariesThatAlreadyFailed = null;
 function resetStack() {
   if (null !== nextUnitOfWork)
@@ -4384,7 +4819,7 @@ function resetStack() {
     ) {
       var interruptedWork$jscomp$0 = interruptedWork;
       switch (interruptedWork$jscomp$0.tag) {
-        case 2:
+        case 1:
           var childContextTypes =
             interruptedWork$jscomp$0.type.childContextTypes;
           null !== childContextTypes &&
@@ -4392,200 +4827,220 @@ function resetStack() {
             popContext(interruptedWork$jscomp$0);
           break;
         case 3:
-          childContextTypes =
-            interruptedWork$jscomp$0.type._reactResult.childContextTypes;
-          null !== childContextTypes &&
-            void 0 !== childContextTypes &&
-            popContext(interruptedWork$jscomp$0);
-          break;
-        case 5:
           popHostContainer(interruptedWork$jscomp$0);
           popTopLevelContextObject(interruptedWork$jscomp$0);
           break;
-        case 7:
+        case 5:
           popHostContext(interruptedWork$jscomp$0);
           break;
-        case 6:
+        case 4:
           popHostContainer(interruptedWork$jscomp$0);
           break;
-        case 12:
+        case 10:
           popProvider(interruptedWork$jscomp$0);
       }
       interruptedWork = interruptedWork.return;
     }
   nextRoot = null;
   nextRenderExpirationTime = 0;
+  nextLatestAbsoluteTimeoutMs = -1;
   nextRenderDidError = !1;
   nextUnitOfWork = null;
 }
+function flushPassiveEffects() {
+  null !== passiveEffectCallback &&
+    (scheduler.unstable_cancelCallback(passiveEffectCallbackHandle),
+    passiveEffectCallback());
+}
 function completeUnitOfWork(workInProgress) {
   for (;;) {
     var current$$1 = workInProgress.alternate,
       returnFiber = workInProgress.return,
       siblingFiber = workInProgress.sibling;
-    if (0 === (workInProgress.effectTag & 512)) {
-      var current = current$$1;
-      current$$1 = workInProgress;
-      var instance = current$$1.pendingProps;
-      switch (current$$1.tag) {
-        case 0:
-        case 1:
-          break;
-        case 2:
-          isContextProvider(current$$1.type) && popContext(current$$1);
-          break;
-        case 3:
-          isContextProvider(current$$1.type._reactResult) &&
-            popContext(current$$1);
-          break;
-        case 5:
-          popHostContainer(current$$1);
-          popTopLevelContextObject(current$$1);
-          instance = current$$1.stateNode;
-          instance.pendingContext &&
-            ((instance.context = instance.pendingContext),
-            (instance.pendingContext = null));
-          if (null === current || null === current.child)
-            current$$1.effectTag &= -3;
-          updateHostContainer(current$$1);
-          break;
-        case 7:
-          popHostContext(current$$1);
-          var rootContainerInstance = requiredContext(
+    if (0 === (workInProgress.effectTag & 1024)) {
+      nextUnitOfWork = workInProgress;
+      a: {
+        var current = current$$1;
+        current$$1 = workInProgress;
+        var renderExpirationTime = nextRenderExpirationTime;
+        var instance = current$$1.pendingProps;
+        switch (current$$1.tag) {
+          case 2:
+            break;
+          case 16:
+            break;
+          case 15:
+          case 0:
+            break;
+          case 1:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          case 3:
+            popHostContainer(current$$1);
+            popTopLevelContextObject(current$$1);
+            instance = current$$1.stateNode;
+            instance.pendingContext &&
+              ((instance.context = instance.pendingContext),
+              (instance.pendingContext = null));
+            if (null === current || null === current.child)
+              current$$1.effectTag &= -3;
+            updateHostContainer(current$$1);
+            break;
+          case 5:
+            popHostContext(current$$1);
+            renderExpirationTime = requiredContext(
               rootInstanceStackCursor.current
-            ),
-            type = current$$1.type;
-          if (null !== current && null != current$$1.stateNode)
-            updateHostComponent$1(
-              current,
-              current$$1,
-              type,
-              instance,
-              rootContainerInstance
-            ),
-              current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
-          else if (instance) {
-            var currentHostContext = requiredContext(
-                contextStackCursor$1.current
-              ),
-              internalInstanceHandle = current$$1;
-            current = nextReactTag;
-            nextReactTag += 2;
-            var viewConfig = ReactNativeViewConfigRegistry.get(type);
-            invariant(
-              "RCTView" !== type || !currentHostContext.isInAParentText,
-              "Nesting of <View> within <Text> is not currently supported."
-            );
-            type = diffProperties(
-              null,
-              emptyObject,
-              instance,
-              viewConfig.validAttributes
-            );
-            rootContainerInstance = FabricUIManager.createNode(
-              current,
-              viewConfig.uiViewClassName,
-              rootContainerInstance,
-              type,
-              internalInstanceHandle
-            );
-            instance = new ReactFabricHostComponent(
-              current,
-              viewConfig,
-              instance
-            );
-            instance = { node: rootContainerInstance, canonical: instance };
-            appendAllChildren(instance, current$$1);
-            current$$1.stateNode = instance;
-            null !== current$$1.ref && (current$$1.effectTag |= 128);
-          } else
-            invariant(
-              null !== current$$1.stateNode,
-              "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
             );
-          break;
-        case 8:
-          current && null != current$$1.stateNode
-            ? updateHostText$1(
+            var type = current$$1.type;
+            if (null !== current && null != current$$1.stateNode)
+              updateHostComponent$1(
                 current,
                 current$$1,
-                current.memoizedProps,
-                instance
-              )
-            : ("string" !== typeof instance &&
-                invariant(
-                  null !== current$$1.stateNode,
-                  "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                type,
+                instance,
+                renderExpirationTime
+              ),
+                current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
+            else if (instance) {
+              var currentHostContext = requiredContext(
+                  contextStackCursor$1.current
                 ),
-              (rootContainerInstance = requiredContext(
-                rootInstanceStackCursor.current
-              )),
-              (current = requiredContext(contextStackCursor$1.current)),
-              (current$$1.stateNode = createTextInstance(
+                internalInstanceHandle = current$$1;
+              current = nextReactTag;
+              nextReactTag += 2;
+              var viewConfig = ReactNativeViewConfigRegistry.get(type);
+              invariant(
+                "RCTView" !== type || !currentHostContext.isInAParentText,
+                "Nesting of <View> within <Text> is not currently supported."
+              );
+              type = diffProperties(
+                null,
+                emptyObject,
                 instance,
-                rootContainerInstance,
+                viewConfig.validAttributes
+              );
+              renderExpirationTime = FabricUIManager.createNode(
                 current,
-                current$$1
-              )));
-          break;
-        case 13:
-        case 14:
-          break;
-        case 16:
-          break;
-        case 9:
-          break;
-        case 10:
-          break;
-        case 15:
-          break;
-        case 6:
-          popHostContainer(current$$1);
-          updateHostContainer(current$$1);
-          break;
-        case 12:
-          popProvider(current$$1);
-          break;
-        case 11:
-          break;
-        case 4:
-          invariant(
-            !1,
-            "An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue."
-          );
-        default:
-          invariant(
-            !1,
-            "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
-          );
+                viewConfig.uiViewClassName,
+                renderExpirationTime,
+                type,
+                internalInstanceHandle
+              );
+              instance = new ReactFabricHostComponent(
+                current,
+                viewConfig,
+                instance
+              );
+              instance = { node: renderExpirationTime, canonical: instance };
+              appendAllChildren(instance, current$$1, !1, !1);
+              current$$1.stateNode = instance;
+              null !== current$$1.ref && (current$$1.effectTag |= 128);
+            } else
+              invariant(
+                null !== current$$1.stateNode,
+                "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+              );
+            break;
+          case 6:
+            current && null != current$$1.stateNode
+              ? updateHostText$1(
+                  current,
+                  current$$1,
+                  current.memoizedProps,
+                  instance
+                )
+              : ("string" !== typeof instance &&
+                  invariant(
+                    null !== current$$1.stateNode,
+                    "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  ),
+                (current = requiredContext(rootInstanceStackCursor.current)),
+                (renderExpirationTime = requiredContext(
+                  contextStackCursor$1.current
+                )),
+                (current$$1.stateNode = createTextInstance(
+                  instance,
+                  current,
+                  renderExpirationTime,
+                  current$$1
+                )));
+            break;
+          case 11:
+            break;
+          case 13:
+            instance = current$$1.memoizedState;
+            if (0 !== (current$$1.effectTag & 64)) {
+              current$$1.expirationTime = renderExpirationTime;
+              nextUnitOfWork = current$$1;
+              break a;
+            }
+            instance = null !== instance;
+            renderExpirationTime =
+              null !== current && null !== current.memoizedState;
+            null !== current &&
+              !instance &&
+              renderExpirationTime &&
+              ((current = current.child.sibling),
+              null !== current &&
+                ((viewConfig = current$$1.firstEffect),
+                null !== viewConfig
+                  ? ((current$$1.firstEffect = current),
+                    (current.nextEffect = viewConfig))
+                  : ((current$$1.firstEffect = current$$1.lastEffect = current),
+                    (current.nextEffect = null)),
+                (current.effectTag = 8)));
+            if (
+              instance !== renderExpirationTime ||
+              (0 === (current$$1.effectTag & 1) && instance)
+            )
+              current$$1.effectTag |= 4;
+            break;
+          case 7:
+            break;
+          case 8:
+            break;
+          case 12:
+            break;
+          case 4:
+            popHostContainer(current$$1);
+            updateHostContainer(current$$1);
+            break;
+          case 10:
+            popProvider(current$$1);
+            break;
+          case 9:
+            break;
+          case 14:
+            break;
+          case 17:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          default:
+            invariant(
+              !1,
+              "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
+            );
+        }
+        nextUnitOfWork = null;
       }
-      current$$1 = nextUnitOfWork = null;
-      instance = workInProgress;
+      current$$1 = workInProgress;
       if (
-        1073741823 === nextRenderExpirationTime ||
-        1073741823 !== instance.childExpirationTime
+        1 === nextRenderExpirationTime ||
+        1 !== current$$1.childExpirationTime
       ) {
-        rootContainerInstance = 0;
-        for (current = instance.child; null !== current; ) {
-          viewConfig = current.expirationTime;
-          type = current.childExpirationTime;
-          if (
-            0 === rootContainerInstance ||
-            (0 !== viewConfig && viewConfig < rootContainerInstance)
-          )
-            rootContainerInstance = viewConfig;
-          if (
-            0 === rootContainerInstance ||
-            (0 !== type && type < rootContainerInstance)
-          )
-            rootContainerInstance = type;
-          current = current.sibling;
-        }
-        instance.childExpirationTime = rootContainerInstance;
+        instance = 0;
+        for (current = current$$1.child; null !== current; )
+          (renderExpirationTime = current.expirationTime),
+            (viewConfig = current.childExpirationTime),
+            renderExpirationTime > instance &&
+              (instance = renderExpirationTime),
+            viewConfig > instance && (instance = viewConfig),
+            (current = current.sibling);
+        current$$1.childExpirationTime = instance;
       }
-      if (null !== current$$1) return current$$1;
+      if (null !== nextUnitOfWork) return nextUnitOfWork;
       null !== returnFiber &&
-        0 === (returnFiber.effectTag & 512) &&
+        0 === (returnFiber.effectTag & 1024) &&
         (null === returnFiber.firstEffect &&
           (returnFiber.firstEffect = workInProgress.firstEffect),
         null !== workInProgress.lastEffect &&
@@ -4600,10 +5055,10 @@ function completeUnitOfWork(workInProgress) {
     } else {
       workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
       if (null !== workInProgress)
-        return (workInProgress.effectTag &= 511), workInProgress;
+        return (workInProgress.effectTag &= 1023), workInProgress;
       null !== returnFiber &&
         ((returnFiber.firstEffect = returnFiber.lastEffect = null),
-        (returnFiber.effectTag |= 512));
+        (returnFiber.effectTag |= 1024));
     }
     if (null !== siblingFiber) return siblingFiber;
     if (null !== returnFiber) workInProgress = returnFiber;
@@ -4617,43 +5072,48 @@ function performUnitOfWork(workInProgress) {
     workInProgress,
     nextRenderExpirationTime
   );
+  workInProgress.memoizedProps = workInProgress.pendingProps;
   null === next && (next = completeUnitOfWork(workInProgress));
   ReactCurrentOwner$2.current = null;
   return next;
 }
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root$jscomp$0, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
+  flushPassiveEffects();
   isWorking = !0;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
-  var expirationTime = root.nextExpirationTimeToWorkOn;
+  ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
+  var expirationTime = root$jscomp$0.nextExpirationTimeToWorkOn;
   if (
     expirationTime !== nextRenderExpirationTime ||
-    root !== nextRoot ||
+    root$jscomp$0 !== nextRoot ||
     null === nextUnitOfWork
   )
     resetStack(),
-      (nextRoot = root),
+      (nextRoot = root$jscomp$0),
       (nextRenderExpirationTime = expirationTime),
       (nextUnitOfWork = createWorkInProgress(
         nextRoot.current,
         null,
         nextRenderExpirationTime
       )),
-      (root.pendingCommitExpirationTime = 0);
+      (root$jscomp$0.pendingCommitExpirationTime = 0);
   var didFatal = !1;
   do {
     try {
       if (isYieldy)
-        for (; null !== nextUnitOfWork && !shouldYield(); )
+        for (; null !== nextUnitOfWork && !shouldYieldToRenderer(); )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
       else
         for (; null !== nextUnitOfWork; )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     } catch (thrownValue) {
-      if (null === nextUnitOfWork)
+      if (
+        ((lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = null),
+        null === nextUnitOfWork)
+      )
         (didFatal = !0), onUncaughtError(thrownValue);
       else {
         invariant(
@@ -4665,50 +5125,141 @@ function renderRoot(root, isYieldy, isExpired) {
         if (null === returnFiber) (didFatal = !0), onUncaughtError(thrownValue);
         else {
           a: {
-            var returnFiber$jscomp$0 = returnFiber,
+            var root = root$jscomp$0,
+              returnFiber$jscomp$0 = returnFiber,
               sourceFiber$jscomp$0 = sourceFiber,
               value = thrownValue;
             returnFiber = nextRenderExpirationTime;
-            sourceFiber$jscomp$0.effectTag |= 512;
+            sourceFiber$jscomp$0.effectTag |= 1024;
             sourceFiber$jscomp$0.firstEffect = sourceFiber$jscomp$0.lastEffect = null;
+            if (
+              null !== value &&
+              "object" === typeof value &&
+              "function" === typeof value.then
+            ) {
+              var thenable = value;
+              value = returnFiber$jscomp$0;
+              var earliestTimeoutMs = -1,
+                startTimeMs = -1;
+              do {
+                if (13 === value.tag) {
+                  var current$$1 = value.alternate;
+                  if (
+                    null !== current$$1 &&
+                    ((current$$1 = current$$1.memoizedState),
+                    null !== current$$1)
+                  ) {
+                    startTimeMs = 10 * (1073741822 - current$$1.timedOutAt);
+                    break;
+                  }
+                  current$$1 = value.pendingProps.maxDuration;
+                  if ("number" === typeof current$$1)
+                    if (0 >= current$$1) earliestTimeoutMs = 0;
+                    else if (
+                      -1 === earliestTimeoutMs ||
+                      current$$1 < earliestTimeoutMs
+                    )
+                      earliestTimeoutMs = current$$1;
+                }
+                value = value.return;
+              } while (null !== value);
+              value = returnFiber$jscomp$0;
+              do {
+                if ((current$$1 = 13 === value.tag))
+                  current$$1 =
+                    void 0 === value.memoizedProps.fallback
+                      ? !1
+                      : null === value.memoizedState;
+                if (current$$1) {
+                  returnFiber$jscomp$0 = retrySuspendedRoot.bind(
+                    null,
+                    root,
+                    value,
+                    sourceFiber$jscomp$0,
+                    0 === (value.mode & 1) ? 1073741823 : returnFiber
+                  );
+                  thenable.then(returnFiber$jscomp$0, returnFiber$jscomp$0);
+                  if (0 === (value.mode & 1)) {
+                    value.effectTag |= 64;
+                    sourceFiber$jscomp$0.effectTag &= -1957;
+                    1 === sourceFiber$jscomp$0.tag &&
+                      null === sourceFiber$jscomp$0.alternate &&
+                      (sourceFiber$jscomp$0.tag = 17);
+                    sourceFiber$jscomp$0.expirationTime = returnFiber;
+                    break a;
+                  }
+                  -1 === earliestTimeoutMs
+                    ? (root = 1073741823)
+                    : (-1 === startTimeMs &&
+                        (startTimeMs =
+                          10 *
+                            (1073741822 -
+                              findEarliestOutstandingPriorityLevel(
+                                root,
+                                returnFiber
+                              )) -
+                          5e3),
+                      (root = startTimeMs + earliestTimeoutMs));
+                  0 <= root &&
+                    nextLatestAbsoluteTimeoutMs < root &&
+                    (nextLatestAbsoluteTimeoutMs = root);
+                  value.effectTag |= 2048;
+                  value.expirationTime = returnFiber;
+                  break a;
+                }
+                value = value.return;
+              } while (null !== value);
+              value = Error(
+                (getComponentName(sourceFiber$jscomp$0.type) ||
+                  "A React component") +
+                  " suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." +
+                  getStackByFiberInDevAndProd(sourceFiber$jscomp$0)
+              );
+            }
             nextRenderDidError = !0;
             value = createCapturedValue(value, sourceFiber$jscomp$0);
+            root = returnFiber$jscomp$0;
             do {
-              switch (returnFiber$jscomp$0.tag) {
-                case 5:
-                  returnFiber$jscomp$0.effectTag |= 1024;
-                  returnFiber$jscomp$0.expirationTime = returnFiber;
+              switch (root.tag) {
+                case 3:
+                  sourceFiber$jscomp$0 = value;
+                  root.effectTag |= 2048;
+                  root.expirationTime = returnFiber;
                   returnFiber = createRootErrorUpdate(
-                    returnFiber$jscomp$0,
-                    value,
+                    root,
+                    sourceFiber$jscomp$0,
                     returnFiber
                   );
-                  enqueueCapturedUpdate(returnFiber$jscomp$0, returnFiber);
+                  enqueueCapturedUpdate(root, returnFiber);
                   break a;
-                case 2:
-                case 3:
-                  sourceFiber$jscomp$0 = value;
-                  var instance = returnFiber$jscomp$0.stateNode;
+                case 1:
                   if (
-                    0 === (returnFiber$jscomp$0.effectTag & 64) &&
-                    null !== instance &&
-                    "function" === typeof instance.componentDidCatch &&
-                    (null === legacyErrorBoundariesThatAlreadyFailed ||
-                      !legacyErrorBoundariesThatAlreadyFailed.has(instance))
+                    ((sourceFiber$jscomp$0 = value),
+                    (returnFiber$jscomp$0 = root.type),
+                    (thenable = root.stateNode),
+                    0 === (root.effectTag & 64) &&
+                      ("function" ===
+                        typeof returnFiber$jscomp$0.getDerivedStateFromError ||
+                        (null !== thenable &&
+                          "function" === typeof thenable.componentDidCatch &&
+                          (null === legacyErrorBoundariesThatAlreadyFailed ||
+                            !legacyErrorBoundariesThatAlreadyFailed.has(
+                              thenable
+                            )))))
                   ) {
-                    returnFiber$jscomp$0.effectTag |= 1024;
-                    returnFiber$jscomp$0.expirationTime = returnFiber;
+                    root.effectTag |= 2048;
+                    root.expirationTime = returnFiber;
                     returnFiber = createClassErrorUpdate(
-                      returnFiber$jscomp$0,
+                      root,
                       sourceFiber$jscomp$0,
                       returnFiber
                     );
-                    enqueueCapturedUpdate(returnFiber$jscomp$0, returnFiber);
+                    enqueueCapturedUpdate(root, returnFiber);
                     break a;
                   }
               }
-              returnFiber$jscomp$0 = returnFiber$jscomp$0.return;
-            } while (null !== returnFiber$jscomp$0);
+              root = root.return;
+            } while (null !== root);
           }
           nextUnitOfWork = completeUnitOfWork(sourceFiber);
           continue;
@@ -4719,201 +5270,192 @@ function renderRoot(root, isYieldy, isExpired) {
   } while (1);
   isWorking = !1;
   lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = ReactCurrentOwner$2.currentDispatcher = null;
-  if (didFatal) (nextRoot = null), (root.finishedWork = null);
-  else if (null !== nextUnitOfWork) root.finishedWork = null;
+  if (didFatal) (nextRoot = null), (root$jscomp$0.finishedWork = null);
+  else if (null !== nextUnitOfWork) root$jscomp$0.finishedWork = null;
   else {
-    isYieldy = root.current.alternate;
+    didFatal = root$jscomp$0.current.alternate;
     invariant(
-      null !== isYieldy,
+      null !== didFatal,
       "Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."
     );
     nextRoot = null;
     if (nextRenderDidError) {
-      didFatal = root.latestPendingTime;
-      sourceFiber = root.latestSuspendedTime;
-      returnFiber = root.latestPingedTime;
+      sourceFiber = root$jscomp$0.latestPendingTime;
+      returnFiber = root$jscomp$0.latestSuspendedTime;
+      root = root$jscomp$0.latestPingedTime;
       if (
-        (0 !== didFatal && didFatal > expirationTime) ||
-        (0 !== sourceFiber && sourceFiber > expirationTime) ||
-        (0 !== returnFiber && returnFiber > expirationTime)
+        (0 !== sourceFiber && sourceFiber < expirationTime) ||
+        (0 !== returnFiber && returnFiber < expirationTime) ||
+        (0 !== root && root < expirationTime)
       ) {
-        root.didError = !1;
-        isExpired = root.latestPingedTime;
-        0 !== isExpired &&
-          isExpired <= expirationTime &&
-          (root.latestPingedTime = 0);
-        isExpired = root.earliestPendingTime;
-        isYieldy = root.latestPendingTime;
-        isExpired === expirationTime
-          ? (root.earliestPendingTime =
-              isYieldy === expirationTime
-                ? (root.latestPendingTime = 0)
-                : isYieldy)
-          : isYieldy === expirationTime && (root.latestPendingTime = isExpired);
-        isExpired = root.earliestSuspendedTime;
-        isYieldy = root.latestSuspendedTime;
-        0 === isExpired
-          ? (root.earliestSuspendedTime = root.latestSuspendedTime = expirationTime)
-          : isExpired > expirationTime
-            ? (root.earliestSuspendedTime = expirationTime)
-            : isYieldy < expirationTime &&
-              (root.latestSuspendedTime = expirationTime);
-        findNextExpirationTimeToWorkOn(expirationTime, root);
-        root.expirationTime = root.expirationTime;
+        markSuspendedPriorityLevel(root$jscomp$0, expirationTime);
+        onSuspend(
+          root$jscomp$0,
+          didFatal,
+          expirationTime,
+          root$jscomp$0.expirationTime,
+          -1
+        );
         return;
       }
-      if (!root.didError && !isExpired) {
-        root.didError = !0;
-        root.nextExpirationTimeToWorkOn = expirationTime;
-        root.expirationTime = 1;
+      if (!root$jscomp$0.didError && isYieldy) {
+        root$jscomp$0.didError = !0;
+        expirationTime = root$jscomp$0.nextExpirationTimeToWorkOn = expirationTime;
+        isYieldy = root$jscomp$0.expirationTime = 1073741823;
+        onSuspend(root$jscomp$0, didFatal, expirationTime, isYieldy, -1);
         return;
       }
     }
-    root.pendingCommitExpirationTime = expirationTime;
-    root.finishedWork = isYieldy;
+    isYieldy && -1 !== nextLatestAbsoluteTimeoutMs
+      ? (markSuspendedPriorityLevel(root$jscomp$0, expirationTime),
+        (isYieldy =
+          10 *
+          (1073741822 -
+            findEarliestOutstandingPriorityLevel(
+              root$jscomp$0,
+              expirationTime
+            ))),
+        isYieldy < nextLatestAbsoluteTimeoutMs &&
+          (nextLatestAbsoluteTimeoutMs = isYieldy),
+        (isYieldy = 10 * (1073741822 - requestCurrentTime())),
+        (isYieldy = nextLatestAbsoluteTimeoutMs - isYieldy),
+        onSuspend(
+          root$jscomp$0,
+          didFatal,
+          expirationTime,
+          root$jscomp$0.expirationTime,
+          0 > isYieldy ? 0 : isYieldy
+        ))
+      : ((root$jscomp$0.pendingCommitExpirationTime = expirationTime),
+        (root$jscomp$0.finishedWork = didFatal));
   }
 }
-function captureCommitPhaseError(fiber, error) {
-  var JSCompiler_inline_result;
-  a: {
-    invariant(
-      !isWorking || isCommitting$1,
-      "dispatch: Cannot dispatch during the render phase."
-    );
-    for (
-      JSCompiler_inline_result = fiber.return;
-      null !== JSCompiler_inline_result;
-
-    ) {
-      switch (JSCompiler_inline_result.tag) {
-        case 2:
-        case 3:
-          var instance = JSCompiler_inline_result.stateNode;
-          if (
-            "function" ===
-              typeof JSCompiler_inline_result.type.getDerivedStateFromCatch ||
-            ("function" === typeof instance.componentDidCatch &&
-              (null === legacyErrorBoundariesThatAlreadyFailed ||
-                !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
-          ) {
-            fiber = createCapturedValue(error, fiber);
-            fiber = createClassErrorUpdate(JSCompiler_inline_result, fiber, 1);
-            enqueueUpdate(JSCompiler_inline_result, fiber);
-            scheduleWork(JSCompiler_inline_result, 1);
-            JSCompiler_inline_result = void 0;
-            break a;
-          }
-          break;
-        case 5:
-          fiber = createCapturedValue(error, fiber);
-          fiber = createRootErrorUpdate(JSCompiler_inline_result, fiber, 1);
-          enqueueUpdate(JSCompiler_inline_result, fiber);
-          scheduleWork(JSCompiler_inline_result, 1);
-          JSCompiler_inline_result = void 0;
-          break a;
-      }
-      JSCompiler_inline_result = JSCompiler_inline_result.return;
+function captureCommitPhaseError(sourceFiber, value) {
+  for (var fiber = sourceFiber.return; null !== fiber; ) {
+    switch (fiber.tag) {
+      case 1:
+        var instance = fiber.stateNode;
+        if (
+          "function" === typeof fiber.type.getDerivedStateFromError ||
+          ("function" === typeof instance.componentDidCatch &&
+            (null === legacyErrorBoundariesThatAlreadyFailed ||
+              !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
+        ) {
+          sourceFiber = createCapturedValue(value, sourceFiber);
+          sourceFiber = createClassErrorUpdate(fiber, sourceFiber, 1073741823);
+          enqueueUpdate(fiber, sourceFiber);
+          scheduleWork(fiber, 1073741823);
+          return;
+        }
+        break;
+      case 3:
+        sourceFiber = createCapturedValue(value, sourceFiber);
+        sourceFiber = createRootErrorUpdate(fiber, sourceFiber, 1073741823);
+        enqueueUpdate(fiber, sourceFiber);
+        scheduleWork(fiber, 1073741823);
+        return;
     }
-    5 === fiber.tag &&
-      ((JSCompiler_inline_result = createCapturedValue(error, fiber)),
-      (JSCompiler_inline_result = createRootErrorUpdate(
-        fiber,
-        JSCompiler_inline_result,
-        1
-      )),
-      enqueueUpdate(fiber, JSCompiler_inline_result),
-      scheduleWork(fiber, 1));
-    JSCompiler_inline_result = void 0;
+    fiber = fiber.return;
   }
-  return JSCompiler_inline_result;
+  3 === sourceFiber.tag &&
+    ((fiber = createCapturedValue(value, sourceFiber)),
+    (fiber = createRootErrorUpdate(sourceFiber, fiber, 1073741823)),
+    enqueueUpdate(sourceFiber, fiber),
+    scheduleWork(sourceFiber, 1073741823));
 }
 function computeExpirationForFiber(currentTime, fiber) {
   isWorking
-    ? (currentTime = isCommitting$1 ? 1 : nextRenderExpirationTime)
+    ? (currentTime = isCommitting$1 ? 1073741823 : nextRenderExpirationTime)
     : fiber.mode & 1
       ? ((currentTime = isBatchingInteractiveUpdates
-          ? 2 + 10 * ((((currentTime - 2 + 15) / 10) | 0) + 1)
-          : 2 + 25 * ((((currentTime - 2 + 500) / 25) | 0) + 1)),
+          ? 1073741822 - 10 * ((((1073741822 - currentTime + 15) / 10) | 0) + 1)
+          : 1073741822 -
+            25 * ((((1073741822 - currentTime + 500) / 25) | 0) + 1)),
         null !== nextRoot &&
           currentTime === nextRenderExpirationTime &&
-          (currentTime += 1))
-      : (currentTime = 1);
+          --currentTime)
+      : (currentTime = 1073741823);
   isBatchingInteractiveUpdates &&
     (0 === lowestPriorityPendingInteractiveExpirationTime ||
-      currentTime > lowestPriorityPendingInteractiveExpirationTime) &&
+      currentTime < lowestPriorityPendingInteractiveExpirationTime) &&
     (lowestPriorityPendingInteractiveExpirationTime = currentTime);
   return currentTime;
 }
-function scheduleWork(fiber, expirationTime) {
-  a: {
-    if (0 === fiber.expirationTime || fiber.expirationTime > expirationTime)
-      fiber.expirationTime = expirationTime;
-    var alternate = fiber.alternate;
-    null !== alternate &&
-      (0 === alternate.expirationTime ||
-        alternate.expirationTime > expirationTime) &&
-      (alternate.expirationTime = expirationTime);
-    var node = fiber.return;
-    if (null === node && 5 === fiber.tag) fiber = fiber.stateNode;
-    else {
-      for (; null !== node; ) {
-        alternate = node.alternate;
-        if (
-          0 === node.childExpirationTime ||
-          node.childExpirationTime > expirationTime
-        )
-          node.childExpirationTime = expirationTime;
-        null !== alternate &&
-          (0 === alternate.childExpirationTime ||
-            alternate.childExpirationTime > expirationTime) &&
-          (alternate.childExpirationTime = expirationTime);
-        if (null === node.return && 5 === node.tag) {
-          fiber = node.stateNode;
-          break a;
-        }
-        node = node.return;
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = root.earliestSuspendedTime;
+  var latestSuspendedTime = root.latestSuspendedTime;
+  if (
+    0 !== retryTime &&
+    suspendedTime <= retryTime &&
+    suspendedTime >= latestSuspendedTime
+  ) {
+    latestSuspendedTime = retryTime = suspendedTime;
+    root.didError = !1;
+    var latestPingedTime = root.latestPingedTime;
+    if (0 === latestPingedTime || latestPingedTime > latestSuspendedTime)
+      root.latestPingedTime = latestSuspendedTime;
+    findNextExpirationTimeToWorkOn(latestSuspendedTime, root);
+  } else
+    (retryTime = requestCurrentTime()),
+      (retryTime = computeExpirationForFiber(retryTime, boundaryFiber)),
+      markPendingPriorityLevel(root, retryTime);
+  0 !== (boundaryFiber.mode & 1) &&
+    root === nextRoot &&
+    nextRenderExpirationTime === suspendedTime &&
+    (nextRoot = null);
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  0 === (boundaryFiber.mode & 1) &&
+    (scheduleWorkToRoot(sourceFiber, retryTime),
+    1 === sourceFiber.tag &&
+      null !== sourceFiber.stateNode &&
+      ((boundaryFiber = createUpdate(retryTime)),
+      (boundaryFiber.tag = 2),
+      enqueueUpdate(sourceFiber, boundaryFiber)));
+  sourceFiber = root.expirationTime;
+  0 !== sourceFiber && requestWork(root, sourceFiber);
+}
+function scheduleWorkToRoot(fiber, expirationTime) {
+  fiber.expirationTime < expirationTime &&
+    (fiber.expirationTime = expirationTime);
+  var alternate = fiber.alternate;
+  null !== alternate &&
+    alternate.expirationTime < expirationTime &&
+    (alternate.expirationTime = expirationTime);
+  var node = fiber.return,
+    root = null;
+  if (null === node && 3 === fiber.tag) root = fiber.stateNode;
+  else
+    for (; null !== node; ) {
+      alternate = node.alternate;
+      node.childExpirationTime < expirationTime &&
+        (node.childExpirationTime = expirationTime);
+      null !== alternate &&
+        alternate.childExpirationTime < expirationTime &&
+        (alternate.childExpirationTime = expirationTime);
+      if (null === node.return && 3 === node.tag) {
+        root = node.stateNode;
+        break;
       }
-      fiber = null;
+      node = node.return;
     }
-  }
-  if (null !== fiber) {
-    !isWorking &&
+  return root;
+}
+function scheduleWork(fiber, expirationTime) {
+  fiber = scheduleWorkToRoot(fiber, expirationTime);
+  null !== fiber &&
+    (!isWorking &&
       0 !== nextRenderExpirationTime &&
-      expirationTime < nextRenderExpirationTime &&
-      resetStack();
-    markPendingPriorityLevel(fiber, expirationTime);
-    if (!isWorking || isCommitting$1 || nextRoot !== fiber) {
-      expirationTime = fiber;
-      fiber = fiber.expirationTime;
-      if (null === expirationTime.nextScheduledRoot)
-        (expirationTime.expirationTime = fiber),
-          null === lastScheduledRoot
-            ? ((firstScheduledRoot = lastScheduledRoot = expirationTime),
-              (expirationTime.nextScheduledRoot = expirationTime))
-            : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = expirationTime),
-              (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot));
-      else if (
-        ((alternate = expirationTime.expirationTime),
-        0 === alternate || fiber < alternate)
-      )
-        expirationTime.expirationTime = fiber;
-      isRendering ||
-        (isBatchingUpdates
-          ? isUnbatchingUpdates &&
-            ((nextFlushedRoot = expirationTime),
-            (nextFlushedExpirationTime = 1),
-            performWorkOnRoot(expirationTime, 1, !0))
-          : 1 === fiber
-            ? performWork(1, null)
-            : scheduleCallbackWithExpirationTime(expirationTime, fiber));
-    }
+      expirationTime > nextRenderExpirationTime &&
+      resetStack(),
+    markPendingPriorityLevel(fiber, expirationTime),
+    (isWorking && !isCommitting$1 && nextRoot === fiber) ||
+      requestWork(fiber, fiber.expirationTime),
     nestedUpdateCount > NESTED_UPDATE_LIMIT &&
       ((nestedUpdateCount = 0),
       invariant(
         !1,
         "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops."
-      ));
-  }
+      )));
 }
 var firstScheduledRoot = null,
   lastScheduledRoot = null,
@@ -4923,27 +5465,25 @@ var firstScheduledRoot = null,
   nextFlushedRoot = null,
   nextFlushedExpirationTime = 0,
   lowestPriorityPendingInteractiveExpirationTime = 0,
-  deadlineDidExpire = !1,
   hasUnhandledError = !1,
   unhandledError = null,
-  deadline = null,
   isBatchingUpdates = !1,
   isUnbatchingUpdates = !1,
   isBatchingInteractiveUpdates = !1,
   completedBatches = null,
   originalStartTimeMs = now$1(),
-  currentRendererTime = ((originalStartTimeMs / 10) | 0) + 2,
+  currentRendererTime = 1073741822 - ((originalStartTimeMs / 10) | 0),
   currentSchedulerTime = currentRendererTime,
   NESTED_UPDATE_LIMIT = 50,
   nestedUpdateCount = 0,
-  lastCommittedRootDuringThisBatch = null,
-  timeHeuristicForUnitOfWork = 1;
+  lastCommittedRootDuringThisBatch = null;
 function recomputeCurrentRendererTime() {
-  currentRendererTime = (((now$1() - originalStartTimeMs) / 10) | 0) + 2;
+  currentRendererTime =
+    1073741822 - (((now$1() - originalStartTimeMs) / 10) | 0);
 }
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (0 !== callbackExpirationTime) {
-    if (expirationTime > callbackExpirationTime) return;
+    if (expirationTime < callbackExpirationTime) return;
     null !== callbackID &&
       ((root = callbackID), (scheduledCallback = null), clearTimeout(root));
   }
@@ -4952,17 +5492,65 @@ function scheduleCallbackWithExpirationTime(root, expirationTime) {
   scheduledCallback = performAsyncWork;
   callbackID = setTimeout(setTimeoutCallback, 1);
 }
+function onSuspend(
+  root,
+  finishedWork,
+  suspendedExpirationTime,
+  rootExpirationTime,
+  msUntilTimeout
+) {
+  root.expirationTime = rootExpirationTime;
+  0 !== msUntilTimeout || shouldYieldToRenderer()
+    ? 0 < msUntilTimeout &&
+      (root.timeoutHandle = scheduleTimeout(
+        onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
+        msUntilTimeout
+      ))
+    : ((root.pendingCommitExpirationTime = suspendedExpirationTime),
+      (root.finishedWork = finishedWork));
+}
+function onTimeout(root, finishedWork, suspendedExpirationTime) {
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  invariant(
+    !isRendering,
+    "work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method."
+  );
+  nextFlushedRoot = root;
+  nextFlushedExpirationTime = suspendedExpirationTime;
+  performWorkOnRoot(root, suspendedExpirationTime, !1);
+  performWork(1073741823, !1);
+}
 function requestCurrentTime() {
   if (isRendering) return currentSchedulerTime;
   findHighestPriorityRoot();
-  if (
-    0 === nextFlushedExpirationTime ||
-    1073741823 === nextFlushedExpirationTime
-  )
+  if (0 === nextFlushedExpirationTime || 1 === nextFlushedExpirationTime)
     recomputeCurrentRendererTime(),
       (currentSchedulerTime = currentRendererTime);
   return currentSchedulerTime;
 }
+function requestWork(root, expirationTime) {
+  null === root.nextScheduledRoot
+    ? ((root.expirationTime = expirationTime),
+      null === lastScheduledRoot
+        ? ((firstScheduledRoot = lastScheduledRoot = root),
+          (root.nextScheduledRoot = root))
+        : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = root),
+          (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot)))
+    : expirationTime > root.expirationTime &&
+      (root.expirationTime = expirationTime);
+  isRendering ||
+    (isBatchingUpdates
+      ? isUnbatchingUpdates &&
+        ((nextFlushedRoot = root),
+        (nextFlushedExpirationTime = 1073741823),
+        performWorkOnRoot(root, 1073741823, !1))
+      : 1073741823 === expirationTime
+        ? performWork(1073741823, !1)
+        : scheduleCallbackWithExpirationTime(root, expirationTime));
+}
 function findHighestPriorityRoot() {
   var highestPriorityWork = 0,
     highestPriorityRoot = null;
@@ -4996,14 +5584,11 @@ function findHighestPriorityRoot() {
             (root.nextScheduledRoot = null);
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          0 === highestPriorityWork ||
-          remainingExpirationTime < highestPriorityWork
-        )
-          (highestPriorityWork = remainingExpirationTime),
-            (highestPriorityRoot = root);
+        remainingExpirationTime > highestPriorityWork &&
+          ((highestPriorityWork = remainingExpirationTime),
+          (highestPriorityRoot = root));
         if (root === lastScheduledRoot) break;
-        if (1 === highestPriorityWork) break;
+        if (1073741823 === highestPriorityWork) break;
         previousScheduledRoot = root;
         root = root.nextScheduledRoot;
       }
@@ -5011,38 +5596,44 @@ function findHighestPriorityRoot() {
   nextFlushedRoot = highestPriorityRoot;
   nextFlushedExpirationTime = highestPriorityWork;
 }
-function performAsyncWork(dl) {
-  if (dl.didTimeout && null !== firstScheduledRoot) {
-    recomputeCurrentRendererTime();
-    var root = firstScheduledRoot;
-    do {
-      var expirationTime = root.expirationTime;
-      0 !== expirationTime &&
-        currentRendererTime >= expirationTime &&
-        (root.nextExpirationTimeToWorkOn = currentRendererTime);
-      root = root.nextScheduledRoot;
-    } while (root !== firstScheduledRoot);
+var didYield = !1;
+function shouldYieldToRenderer() {
+  return didYield ? !0 : frameDeadline <= now$1() ? (didYield = !0) : !1;
+}
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer() && null !== firstScheduledRoot) {
+      recomputeCurrentRendererTime();
+      var root = firstScheduledRoot;
+      do {
+        var expirationTime = root.expirationTime;
+        0 !== expirationTime &&
+          currentRendererTime <= expirationTime &&
+          (root.nextExpirationTimeToWorkOn = currentRendererTime);
+        root = root.nextScheduledRoot;
+      } while (root !== firstScheduledRoot);
+    }
+    performWork(0, !0);
+  } finally {
+    didYield = !1;
   }
-  performWork(0, dl);
 }
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
+function performWork(minExpirationTime, isYieldy) {
   findHighestPriorityRoot();
-  if (null !== deadline)
+  if (isYieldy)
     for (
       recomputeCurrentRendererTime(),
         currentSchedulerTime = currentRendererTime;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime);
 
     )
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       ),
         findHighestPriorityRoot(),
         recomputeCurrentRendererTime(),
@@ -5052,29 +5643,28 @@ function performWork(minExpirationTime, dl) {
       ;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime;
 
     )
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !0),
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !1),
         findHighestPriorityRoot();
-  null !== deadline && ((callbackExpirationTime = 0), (callbackID = null));
+  isYieldy && ((callbackExpirationTime = 0), (callbackID = null));
   0 !== nextFlushedExpirationTime &&
     scheduleCallbackWithExpirationTime(
       nextFlushedRoot,
       nextFlushedExpirationTime
     );
-  deadline = null;
-  deadlineDidExpire = !1;
   nestedUpdateCount = 0;
   lastCommittedRootDuringThisBatch = null;
   if (null !== completedBatches)
     for (
-      minExpirationTime = completedBatches, completedBatches = null, dl = 0;
-      dl < minExpirationTime.length;
-      dl++
+      minExpirationTime = completedBatches,
+        completedBatches = null,
+        isYieldy = 0;
+      isYieldy < minExpirationTime.length;
+      isYieldy++
     ) {
-      var batch = minExpirationTime[dl];
+      var batch = minExpirationTime[isYieldy];
       try {
         batch._onComplete();
       } catch (error) {
@@ -5088,39 +5678,45 @@ function performWork(minExpirationTime, dl) {
     (hasUnhandledError = !1),
     minExpirationTime);
 }
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
   isRendering = !0;
-  if (null === deadline || isExpired) {
-    var finishedWork = root.finishedWork;
-    null !== finishedWork
-      ? completeRoot$1(root, finishedWork, expirationTime)
+  if (isYieldy) {
+    var _finishedWork = root.finishedWork;
+    null !== _finishedWork
+      ? completeRoot$1(root, _finishedWork, expirationTime)
       : ((root.finishedWork = null),
-        renderRoot(root, !1, isExpired),
-        (finishedWork = root.finishedWork),
-        null !== finishedWork &&
-          completeRoot$1(root, finishedWork, expirationTime));
+        (_finishedWork = root.timeoutHandle),
+        -1 !== _finishedWork &&
+          ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+        renderRoot(root, isYieldy),
+        (_finishedWork = root.finishedWork),
+        null !== _finishedWork &&
+          (shouldYieldToRenderer()
+            ? (root.finishedWork = _finishedWork)
+            : completeRoot$1(root, _finishedWork, expirationTime)));
   } else
-    (finishedWork = root.finishedWork),
-      null !== finishedWork
-        ? completeRoot$1(root, finishedWork, expirationTime)
+    (_finishedWork = root.finishedWork),
+      null !== _finishedWork
+        ? completeRoot$1(root, _finishedWork, expirationTime)
         : ((root.finishedWork = null),
-          renderRoot(root, !0, isExpired),
-          (finishedWork = root.finishedWork),
-          null !== finishedWork &&
-            (shouldYield()
-              ? (root.finishedWork = finishedWork)
-              : completeRoot$1(root, finishedWork, expirationTime)));
+          (_finishedWork = root.timeoutHandle),
+          -1 !== _finishedWork &&
+            ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+          renderRoot(root, isYieldy),
+          (_finishedWork = root.finishedWork),
+          null !== _finishedWork &&
+            completeRoot$1(root, _finishedWork, expirationTime));
   isRendering = !1;
 }
 function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
   var firstBatch = root.firstBatch;
   if (
     null !== firstBatch &&
-    firstBatch._expirationTime <= expirationTime &&
+    firstBatch._expirationTime >= expirationTime &&
     (null === completedBatches
       ? (completedBatches = [firstBatch])
       : completedBatches.push(firstBatch),
@@ -5149,9 +5745,7 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
   var childExpirationTimeBeforeCommit =
     finishedWork$jscomp$0.childExpirationTime;
   firstBatch =
-    0 === firstBatch ||
-    (0 !== childExpirationTimeBeforeCommit &&
-      childExpirationTimeBeforeCommit < firstBatch)
+    childExpirationTimeBeforeCommit > firstBatch
       ? childExpirationTimeBeforeCommit
       : firstBatch;
   root.didError = !1;
@@ -5163,19 +5757,19 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
       (root.latestPingedTime = 0))
     : ((childExpirationTimeBeforeCommit = root.latestPendingTime),
       0 !== childExpirationTimeBeforeCommit &&
-        (childExpirationTimeBeforeCommit < firstBatch
+        (childExpirationTimeBeforeCommit > firstBatch
           ? (root.earliestPendingTime = root.latestPendingTime = 0)
-          : root.earliestPendingTime < firstBatch &&
+          : root.earliestPendingTime > firstBatch &&
             (root.earliestPendingTime = root.latestPendingTime)),
       (childExpirationTimeBeforeCommit = root.earliestSuspendedTime),
       0 === childExpirationTimeBeforeCommit
         ? markPendingPriorityLevel(root, firstBatch)
-        : firstBatch > root.latestSuspendedTime
+        : firstBatch < root.latestSuspendedTime
           ? ((root.earliestSuspendedTime = 0),
             (root.latestSuspendedTime = 0),
             (root.latestPingedTime = 0),
             markPendingPriorityLevel(root, firstBatch))
-          : firstBatch < childExpirationTimeBeforeCommit &&
+          : firstBatch > childExpirationTimeBeforeCommit &&
             markPendingPriorityLevel(root, firstBatch));
   findNextExpirationTimeToWorkOn(0, root);
   ReactCurrentOwner$2.current = null;
@@ -5187,33 +5781,37 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
     : (firstBatch = finishedWork$jscomp$0.firstEffect);
   for (nextEffect = firstBatch; null !== nextEffect; ) {
     childExpirationTimeBeforeCommit = !1;
-    var error = void 0;
+    var error$jscomp$0 = void 0;
     try {
       for (; null !== nextEffect; ) {
-        if (nextEffect.effectTag & 256) {
-          var current$$1 = nextEffect.alternate;
+        if (nextEffect.effectTag & 256)
           a: {
-            var finishedWork = nextEffect;
+            var current$$1 = nextEffect.alternate,
+              finishedWork = nextEffect;
             switch (finishedWork.tag) {
-              case 2:
-              case 3:
+              case 0:
+              case 11:
+              case 15:
+                break a;
+              case 1:
                 if (finishedWork.effectTag & 256 && null !== current$$1) {
                   var prevProps = current$$1.memoizedProps,
                     prevState = current$$1.memoizedState,
-                    instance = finishedWork.stateNode;
-                  instance.props = finishedWork.memoizedProps;
-                  instance.state = finishedWork.memoizedState;
-                  var snapshot = instance.getSnapshotBeforeUpdate(
-                    prevProps,
-                    prevState
-                  );
+                    instance = finishedWork.stateNode,
+                    snapshot = instance.getSnapshotBeforeUpdate(
+                      finishedWork.elementType === finishedWork.type
+                        ? prevProps
+                        : resolveDefaultProps(finishedWork.type, prevProps),
+                      prevState
+                    );
                   instance.__reactInternalSnapshotBeforeUpdate = snapshot;
                 }
                 break a;
+              case 3:
               case 5:
-              case 7:
-              case 8:
               case 6:
+              case 4:
+              case 17:
                 break a;
               default:
                 invariant(
@@ -5222,18 +5820,17 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
                 );
             }
           }
-        }
         nextEffect = nextEffect.nextEffect;
       }
     } catch (e) {
-      (childExpirationTimeBeforeCommit = !0), (error = e);
+      (childExpirationTimeBeforeCommit = !0), (error$jscomp$0 = e);
     }
     childExpirationTimeBeforeCommit &&
       (invariant(
         null !== nextEffect,
         "Should have next effect. This error is likely caused by a bug in React. Please file an issue."
       ),
-      captureCommitPhaseError(nextEffect, error),
+      captureCommitPhaseError(nextEffect, error$jscomp$0),
       null !== nextEffect && (nextEffect = nextEffect.nextEffect));
   }
   for (nextEffect = firstBatch; null !== nextEffect; ) {
@@ -5270,8 +5867,32 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
               "function" === typeof onCommitFiberUnmount &&
                 onCommitFiberUnmount(childExpirationTimeBeforeCommit);
               switch (childExpirationTimeBeforeCommit.tag) {
-                case 2:
-                case 3:
+                case 0:
+                case 11:
+                case 14:
+                case 15:
+                  var updateQueue = childExpirationTimeBeforeCommit.updateQueue;
+                  if (null !== updateQueue) {
+                    var lastEffect = updateQueue.lastEffect;
+                    if (null !== lastEffect) {
+                      var firstEffect = lastEffect.next;
+                      error$jscomp$0 = firstEffect;
+                      do {
+                        var destroy = error$jscomp$0.destroy;
+                        if (null !== destroy) {
+                          finishedWork = childExpirationTimeBeforeCommit;
+                          try {
+                            destroy();
+                          } catch (error) {
+                            captureCommitPhaseError(finishedWork, error);
+                          }
+                        }
+                        error$jscomp$0 = error$jscomp$0.next;
+                      } while (error$jscomp$0 !== firstEffect);
+                    }
+                  }
+                  break;
+                case 1:
                   safelyDetachRef(childExpirationTimeBeforeCommit);
                   var instance$jscomp$0 =
                     childExpirationTimeBeforeCommit.stateNode;
@@ -5291,10 +5912,10 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
                       );
                     }
                   break;
-                case 7:
+                case 5:
                   safelyDetachRef(childExpirationTimeBeforeCommit);
                   break;
-                case 6:
+                case 4:
                   FabricUIManager.createChildSet(
                     childExpirationTimeBeforeCommit.stateNode.containerInfo
                   );
@@ -5314,9 +5935,14 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
             }
             prevState.return = null;
             prevState.child = null;
-            prevState.alternate &&
-              ((prevState.alternate.child = null),
-              (prevState.alternate.return = null));
+            prevState.memoizedState = null;
+            prevState.updateQueue = null;
+            var alternate = prevState.alternate;
+            null !== alternate &&
+              ((alternate.return = null),
+              (alternate.child = null),
+              (alternate.memoizedState = null),
+              (alternate.updateQueue = null));
         }
         nextEffect = nextEffect.nextEffect;
       }
@@ -5340,75 +5966,78 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
         var effectTag$jscomp$0 = nextEffect.effectTag;
         if (effectTag$jscomp$0 & 36) {
           var current$$1$jscomp$1 = nextEffect.alternate;
-          instance$jscomp$0 = nextEffect;
-          firstBatch = currentRef;
-          switch (instance$jscomp$0.tag) {
-            case 2:
-            case 3:
-              var instance$jscomp$1 = instance$jscomp$0.stateNode;
-              if (instance$jscomp$0.effectTag & 4)
+          updateQueue = nextEffect;
+          lastEffect = currentRef;
+          switch (updateQueue.tag) {
+            case 0:
+            case 11:
+            case 15:
+              break;
+            case 1:
+              var instance$jscomp$1 = updateQueue.stateNode;
+              if (updateQueue.effectTag & 4)
                 if (null === current$$1$jscomp$1)
-                  (instance$jscomp$1.props = instance$jscomp$0.memoizedProps),
-                    (instance$jscomp$1.state = instance$jscomp$0.memoizedState),
-                    instance$jscomp$1.componentDidMount();
+                  instance$jscomp$1.componentDidMount();
                 else {
-                  var prevProps$jscomp$0 = current$$1$jscomp$1.memoizedProps,
-                    prevState$jscomp$0 = current$$1$jscomp$1.memoizedState;
-                  instance$jscomp$1.props = instance$jscomp$0.memoizedProps;
-                  instance$jscomp$1.state = instance$jscomp$0.memoizedState;
+                  var prevProps$jscomp$0 =
+                    updateQueue.elementType === updateQueue.type
+                      ? current$$1$jscomp$1.memoizedProps
+                      : resolveDefaultProps(
+                          updateQueue.type,
+                          current$$1$jscomp$1.memoizedProps
+                        );
                   instance$jscomp$1.componentDidUpdate(
                     prevProps$jscomp$0,
-                    prevState$jscomp$0,
+                    current$$1$jscomp$1.memoizedState,
                     instance$jscomp$1.__reactInternalSnapshotBeforeUpdate
                   );
                 }
-              var updateQueue = instance$jscomp$0.updateQueue;
-              null !== updateQueue &&
-                ((instance$jscomp$1.props = instance$jscomp$0.memoizedProps),
-                (instance$jscomp$1.state = instance$jscomp$0.memoizedState),
+              var updateQueue$jscomp$0 = updateQueue.updateQueue;
+              null !== updateQueue$jscomp$0 &&
                 commitUpdateQueue(
-                  instance$jscomp$0,
                   updateQueue,
+                  updateQueue$jscomp$0,
                   instance$jscomp$1,
-                  firstBatch
-                ));
+                  lastEffect
+                );
               break;
-            case 5:
-              var _updateQueue = instance$jscomp$0.updateQueue;
+            case 3:
+              var _updateQueue = updateQueue.updateQueue;
               if (null !== _updateQueue) {
-                current$$1 = null;
-                if (null !== instance$jscomp$0.child)
-                  switch (instance$jscomp$0.child.tag) {
-                    case 7:
-                      current$$1 = instance$jscomp$0.child.stateNode.canonical;
+                firstEffect = null;
+                if (null !== updateQueue.child)
+                  switch (updateQueue.child.tag) {
+                    case 5:
+                      firstEffect = updateQueue.child.stateNode.canonical;
                       break;
-                    case 2:
-                    case 3:
-                      current$$1 = instance$jscomp$0.child.stateNode;
+                    case 1:
+                      firstEffect = updateQueue.child.stateNode;
                   }
                 commitUpdateQueue(
-                  instance$jscomp$0,
+                  updateQueue,
                   _updateQueue,
-                  current$$1,
-                  firstBatch
+                  firstEffect,
+                  lastEffect
                 );
               }
               break;
-            case 7:
+            case 5:
               null === current$$1$jscomp$1 &&
-                instance$jscomp$0.effectTag & 4 &&
+                updateQueue.effectTag & 4 &&
                 invariant(
                   !1,
                   "The current renderer does not support mutation. This error is likely caused by a bug in React. Please file an issue."
                 );
               break;
-            case 8:
-              break;
             case 6:
               break;
-            case 15:
+            case 4:
               break;
-            case 16:
+            case 12:
+              break;
+            case 13:
+              break;
+            case 17:
               break;
             default:
               invariant(
@@ -5422,7 +6051,7 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
           if (null !== ref) {
             var instance$jscomp$2 = nextEffect.stateNode;
             switch (nextEffect.tag) {
-              case 7:
+              case 5:
                 var instanceToUse = instance$jscomp$2.canonical;
                 break;
               default:
@@ -5433,9 +6062,7 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
               : (ref.current = instanceToUse);
           }
         }
-        var next = nextEffect.nextEffect;
-        nextEffect.nextEffect = null;
-        nextEffect = next;
+        nextEffect = nextEffect.nextEffect;
       }
     } catch (e) {
       (effectTag = !0), (current$$1$jscomp$0 = e);
@@ -5454,8 +6081,7 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
   effectTag$jscomp$0 = finishedWork$jscomp$0.expirationTime;
   finishedWork$jscomp$0 = finishedWork$jscomp$0.childExpirationTime;
   finishedWork$jscomp$0 =
-    0 === effectTag$jscomp$0 ||
-    (0 !== finishedWork$jscomp$0 && finishedWork$jscomp$0 < effectTag$jscomp$0)
+    finishedWork$jscomp$0 > effectTag$jscomp$0
       ? finishedWork$jscomp$0
       : effectTag$jscomp$0;
   0 === finishedWork$jscomp$0 &&
@@ -5463,13 +6089,6 @@ function completeRoot$1(root, finishedWork$jscomp$0, expirationTime) {
   root.expirationTime = finishedWork$jscomp$0;
   root.finishedWork = null;
 }
-function shouldYield() {
-  return deadlineDidExpire
-    ? !0
-    : null === deadline || deadline.timeRemaining() > timeHeuristicForUnitOfWork
-      ? !1
-      : (deadlineDidExpire = !0);
-}
 function onUncaughtError(error) {
   invariant(
     null !== nextFlushedRoot,
@@ -5478,56 +6097,7 @@ function onUncaughtError(error) {
   nextFlushedRoot.expirationTime = 0;
   hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
 }
-function getContextForSubtree(parentComponent) {
-  if (!parentComponent) return emptyContextObject;
-  parentComponent = parentComponent._reactInternalFiber;
-  a: {
-    invariant(
-      2 === isFiberMountedImpl(parentComponent) &&
-        (2 === parentComponent.tag || 3 === parentComponent.tag),
-      "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
-    );
-    var parentContext = parentComponent;
-    do {
-      switch (parentContext.tag) {
-        case 5:
-          parentContext = parentContext.stateNode.context;
-          break a;
-        case 2:
-          if (isContextProvider(parentContext.type)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-          break;
-        case 3:
-          if (isContextProvider(parentContext.type._reactResult)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-      }
-      parentContext = parentContext.return;
-    } while (null !== parentContext);
-    invariant(
-      !1,
-      "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
-    );
-    parentContext = void 0;
-  }
-  if (2 === parentComponent.tag) {
-    var Component = parentComponent.type;
-    if (isContextProvider(Component))
-      return processChildContext(parentComponent, Component, parentContext);
-  } else if (
-    3 === parentComponent.tag &&
-    ((Component = parentComponent.type._reactResult),
-    isContextProvider(Component))
-  )
-    return processChildContext(parentComponent, Component, parentContext);
-  return parentContext;
-}
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = component._reactInternalFiber;
   void 0 === fiber &&
     ("function" === typeof component.render
@@ -5545,7 +6115,48 @@ function updateContainer(element, container, parentComponent, callback) {
     currentTime = requestCurrentTime();
   current$$1 = computeExpirationForFiber(currentTime, current$$1);
   currentTime = container.current;
-  parentComponent = getContextForSubtree(parentComponent);
+  a: if (parentComponent) {
+    parentComponent = parentComponent._reactInternalFiber;
+    b: {
+      invariant(
+        2 === isFiberMountedImpl(parentComponent) && 1 === parentComponent.tag,
+        "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
+      );
+      var parentContext = parentComponent;
+      do {
+        switch (parentContext.tag) {
+          case 3:
+            parentContext = parentContext.stateNode.context;
+            break b;
+          case 1:
+            if (isContextProvider(parentContext.type)) {
+              parentContext =
+                parentContext.stateNode
+                  .__reactInternalMemoizedMergedChildContext;
+              break b;
+            }
+        }
+        parentContext = parentContext.return;
+      } while (null !== parentContext);
+      invariant(
+        !1,
+        "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
+      );
+      parentContext = void 0;
+    }
+    if (1 === parentComponent.tag) {
+      var Component = parentComponent.type;
+      if (isContextProvider(Component)) {
+        parentComponent = processChildContext(
+          parentComponent,
+          Component,
+          parentContext
+        );
+        break a;
+      }
+    }
+    parentComponent = parentContext;
+  } else parentComponent = emptyContextObject;
   null === container.context
     ? (container.context = parentComponent)
     : (container.pendingContext = parentComponent);
@@ -5554,6 +6165,7 @@ function updateContainer(element, container, parentComponent, callback) {
   callback.payload = { element: element };
   container = void 0 === container ? null : container;
   null !== container && (callback.callback = container);
+  flushPassiveEffects();
   enqueueUpdate(currentTime, callback);
   scheduleWork(currentTime, current$$1);
   return current$$1;
@@ -5598,7 +6210,7 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle._nativeTag) return componentOrHandle._nativeTag;
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag)
     return componentOrHandle.canonical._nativeTag;
-  componentOrHandle = findHostInstance$1(componentOrHandle);
+  componentOrHandle = findHostInstance(componentOrHandle);
   return null == componentOrHandle
     ? componentOrHandle
     : componentOrHandle.canonical
@@ -5613,13 +6225,13 @@ _batchedUpdatesImpl = function(fn, a) {
   } finally {
     (isBatchingUpdates = previousIsBatchingUpdates) ||
       isRendering ||
-      performWork(1, null);
+      performWork(1073741823, !1);
   }
 };
 _flushInteractiveUpdatesImpl = function() {
   isRendering ||
     0 === lowestPriorityPendingInteractiveExpirationTime ||
-    (performWork(lowestPriorityPendingInteractiveExpirationTime, null),
+    (performWork(lowestPriorityPendingInteractiveExpirationTime, !1),
     (lowestPriorityPendingInteractiveExpirationTime = 0));
 };
 var roots = new Map(),
@@ -5694,12 +6306,12 @@ var roots = new Map(),
         };
         return ReactNativeComponent;
       })(React.Component);
-    })(findNodeHandle, findHostInstance$1),
+    })(findNodeHandle, findHostInstance),
     findNodeHandle: findNodeHandle,
     render: function(element, containerTag, callback) {
       var root = roots.get(containerTag);
       if (!root) {
-        root = new FiberNode(5, null, null, 0);
+        root = createFiber(3, null, null, 0);
         var root$jscomp$0 = {
           current: root,
           containerInfo: containerTag,
@@ -5727,7 +6339,7 @@ var roots = new Map(),
       updateContainer(element, root, null, callback);
       a: if (((element = root.current), element.child))
         switch (element.child.tag) {
-          case 7:
+          case 5:
             element = element.child.stateNode.canonical;
             break a;
           default:
@@ -5802,7 +6414,7 @@ var roots = new Map(),
             TextInputState.blurTextInput(findNodeHandle(this));
           }
         };
-      })(findNodeHandle, findHostInstance$1)
+      })(findNodeHandle, findHostInstance)
     }
   };
 (function(devToolsConfig) {
@@ -5824,7 +6436,7 @@ var roots = new Map(),
   findFiberByHostInstance: getInstanceFromInstance,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
   bundleType: 0,
-  version: "16.5.0",
+  version: "16.6.1",
   rendererPackageName: "react-native-renderer"
 });
 var ReactFabric$2 = { default: ReactFabric },
diff --git a/Libraries/Renderer/oss/ReactFabric-profiling.js b/Libraries/Renderer/oss/ReactFabric-profiling.js
index de00c9c48571bf..f327de43d86241 100644
--- a/Libraries/Renderer/oss/ReactFabric-profiling.js
+++ b/Libraries/Renderer/oss/ReactFabric-profiling.js
@@ -19,7 +19,8 @@ var ReactNativeViewConfigRegistry = require("ReactNativeViewConfigRegistry"),
   flattenStyle = require("flattenStyle"),
   TextInputState = require("TextInputState"),
   FabricUIManager = require("FabricUIManager"),
-  tracking = require("schedule/tracking"),
+  tracing = require("scheduler/tracing"),
+  scheduler = require("scheduler"),
   ExceptionsManager = require("ExceptionsManager");
 function invariant(condition, format, a, b, c, d, e, f) {
   if (!condition) {
@@ -167,10 +168,10 @@ var plugins = [],
   getFiberCurrentPropsFromNode = null,
   getInstanceFromNode = null,
   getNodeFromInstance = null;
-function executeDispatch(event, simulated, listener, inst) {
-  simulated = event.type || "unknown-event";
+function executeDispatch(event, listener, inst) {
+  var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
-  invokeGuardedCallbackAndCatchFirstError(simulated, listener, void 0, event);
+  invokeGuardedCallbackAndCatchFirstError(type, listener, void 0, event);
   event.currentTarget = null;
 }
 function executeDirectDispatch(event) {
@@ -216,10 +217,10 @@ function executeDispatchesAndReleaseTopLevel(e) {
         i < dispatchListeners.length && !e.isPropagationStopped();
         i++
       )
-        executeDispatch(e, !1, dispatchListeners[i], dispatchInstances[i]);
+        executeDispatch(e, dispatchListeners[i], dispatchInstances[i]);
     else
       dispatchListeners &&
-        executeDispatch(e, !1, dispatchListeners, dispatchInstances);
+        executeDispatch(e, dispatchListeners, dispatchInstances);
     e._dispatchListeners = null;
     e._dispatchInstances = null;
     e.isPersistent() || e.constructor.release(e);
@@ -294,7 +295,7 @@ function getListener(inst, registrationName) {
 }
 function getParent(inst) {
   do inst = inst.return;
-  while (inst && 7 !== inst.tag);
+  while (inst && 5 !== inst.tag);
   return inst ? inst : null;
 }
 function traverseTwoPhase(inst, fn, arg) {
@@ -956,10 +957,6 @@ var eventTypes$1 = {
       }
     }
   },
-  customBubblingEventTypes$1 =
-    ReactNativeViewConfigRegistry.customBubblingEventTypes,
-  customDirectEventTypes$1 =
-    ReactNativeViewConfigRegistry.customDirectEventTypes,
   ReactNativeBridgeEventPlugin = {
     eventTypes: ReactNativeViewConfigRegistry.eventTypes,
     extractEvents: function(
@@ -969,8 +966,10 @@ var eventTypes$1 = {
       nativeEventTarget
     ) {
       if (null == targetInst) return null;
-      var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType],
-        directDispatchConfig = customDirectEventTypes$1[topLevelType];
+      var bubbleDispatchConfig =
+          ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType],
+        directDispatchConfig =
+          ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
       invariant(
         bubbleDispatchConfig || directDispatchConfig,
         'Unsupported top level event type "%s" dispatched',
@@ -1030,9 +1029,13 @@ var ReactSharedInternals =
   REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 60114,
   REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 60109,
   REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 60110,
-  REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 60111,
+  REACT_CONCURRENT_MODE_TYPE = hasSymbol
+    ? Symbol.for("react.concurrent_mode")
+    : 60111,
   REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for("react.forward_ref") : 60112,
-  REACT_PLACEHOLDER_TYPE = hasSymbol ? Symbol.for("react.placeholder") : 60113,
+  REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 60113,
+  REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 60115,
+  REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 60116,
   MAYBE_ITERATOR_SYMBOL = "function" === typeof Symbol && Symbol.iterator;
 function getIteratorFn(maybeIterable) {
   if (null === maybeIterable || "object" !== typeof maybeIterable) return null;
@@ -1046,8 +1049,8 @@ function getComponentName(type) {
   if ("function" === typeof type) return type.displayName || type.name || null;
   if ("string" === typeof type) return type;
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -1056,28 +1059,28 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
-  if ("object" === typeof type) {
+  if ("object" === typeof type)
     switch (type.$$typeof) {
       case REACT_CONTEXT_TYPE:
         return "Context.Consumer";
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
+        var innerType = type.render;
+        innerType = innerType.displayName || innerType.name || "";
         return (
-          (type = type.render),
-          (type = type.displayName || type.name || ""),
-          "" !== type ? "ForwardRef(" + type + ")" : "ForwardRef"
+          type.displayName ||
+          ("" !== innerType ? "ForwardRef(" + innerType + ")" : "ForwardRef")
         );
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE:
+        if ((type = 1 === type._status ? type._result : null))
+          return getComponentName(type);
     }
-    if (
-      "function" === typeof type.then &&
-      (type = 1 === type._reactStatus ? type._reactResult : null)
-    )
-      return getComponentName(type);
-  }
   return null;
 }
 function isFiberMountedImpl(fiber) {
@@ -1088,7 +1091,7 @@ function isFiberMountedImpl(fiber) {
     for (; node.return; )
       if (((node = node.return), 0 !== (node.effectTag & 2))) return 1;
   }
-  return 5 === node.tag ? 2 : 3;
+  return 3 === node.tag ? 2 : 3;
 }
 function assertIsMounted(fiber) {
   invariant(
@@ -1164,14 +1167,14 @@ function findCurrentFiberUsingSlowPath(fiber) {
       "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue."
     );
   }
-  invariant(5 === a.tag, "Unable to find node on an unmounted component.");
+  invariant(3 === a.tag, "Unable to find node on an unmounted component.");
   return a.stateNode.current === a ? fiber : alternate;
 }
 function findCurrentHostFiber(parent) {
   parent = findCurrentFiberUsingSlowPath(parent);
   if (!parent) return null;
   for (var node = parent; ; ) {
-    if (7 === node.tag || 8 === node.tag) return node;
+    if (5 === node.tag || 6 === node.tag) return node;
     if (node.child) (node.child.return = node), (node = node.child);
     else {
       if (node === parent) break;
@@ -1421,18 +1424,12 @@ var now$1 =
           return Date.now();
         },
   scheduledCallback = null,
-  frameDeadline = 0,
-  frameDeadlineObject = {
-    timeRemaining: function() {
-      return frameDeadline - now$1();
-    },
-    didTimeout: !1
-  };
+  frameDeadline = 0;
 function setTimeoutCallback() {
   frameDeadline = now$1() + 5;
   var callback = scheduledCallback;
   scheduledCallback = null;
-  null !== callback && callback(frameDeadlineObject);
+  null !== callback && callback();
 }
 var restoreTarget = null,
   restoreQueue = null;
@@ -1507,7 +1504,7 @@ function dispatchEvent(target, topLevelType, nativeEvent) {
 function shim$1() {
   invariant(
     !1,
-    "The current renderer does not support hyration. This error is likely caused by a bug in React. Please file an issue."
+    "The current renderer does not support hydration. This error is likely caused by a bug in React. Please file an issue."
   );
 }
 var nextReactTag = 2;
@@ -1590,22 +1587,50 @@ function createTextInstance(
   };
 }
 var scheduleTimeout = setTimeout,
-  BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+  cancelTimeout = clearTimeout;
+function cloneHiddenInstance(instance) {
+  var node = instance.node;
+  var updatePayload = diffProperties(
+    null,
+    emptyObject,
+    { style: { display: "none" } },
+    instance.canonical.viewConfig.validAttributes
+  );
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(node, updatePayload),
+    canonical: instance.canonical
+  };
+}
+function cloneUnhiddenInstance(instance, type, props) {
+  var viewConfig = instance.canonical.viewConfig;
+  type = instance.node;
+  var prevProps = Object.assign({}, props, {
+    style: [props.style, { display: "none" }]
+  });
+  props = diffProperties(null, prevProps, props, viewConfig.validAttributes);
+  return {
+    node: FabricUIManager.cloneNodeWithNewProps(type, props),
+    canonical: instance.canonical
+  };
+}
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
 function getStackByFiberInDevAndProd(workInProgress) {
   var info = "";
   do {
     a: switch (workInProgress.tag) {
-      case 4:
-      case 0:
-      case 1:
-      case 2:
       case 3:
+      case 4:
+      case 6:
       case 7:
       case 10:
+      case 9:
+        var JSCompiler_inline_result = "";
+        break a;
+      default:
         var owner = workInProgress._debugOwner,
           source = workInProgress._debugSource,
           name = getComponentName(workInProgress.type);
-        var JSCompiler_inline_result = null;
+        JSCompiler_inline_result = null;
         owner && (JSCompiler_inline_result = getComponentName(owner.type));
         owner = name;
         name = "";
@@ -1619,9 +1644,6 @@ function getStackByFiberInDevAndProd(workInProgress) {
           : JSCompiler_inline_result &&
             (name = " (created by " + JSCompiler_inline_result + ")");
         JSCompiler_inline_result = "\n    in " + (owner || "Unknown") + name;
-        break a;
-      default:
-        JSCompiler_inline_result = "";
     }
     info += JSCompiler_inline_result;
     workInProgress = workInProgress.return;
@@ -1753,7 +1775,7 @@ function injectInternals(internals) {
 function FiberNode(tag, pendingProps, key, mode) {
   this.tag = tag;
   this.key = key;
-  this.sibling = this.child = this.return = this.stateNode = this.type = null;
+  this.sibling = this.child = this.return = this.stateNode = this.type = this.elementType = null;
   this.index = 0;
   this.ref = null;
   this.pendingProps = pendingProps;
@@ -1767,19 +1789,33 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.actualStartTime = -1;
   this.treeBaseDuration = this.selfBaseDuration = 0;
 }
+function createFiber(tag, pendingProps, key, mode) {
+  return new FiberNode(tag, pendingProps, key, mode);
+}
 function shouldConstruct(Component) {
   Component = Component.prototype;
   return !(!Component || !Component.isReactComponent);
 }
-function createWorkInProgress(current, pendingProps, expirationTime) {
+function resolveLazyComponentTag(Component) {
+  if ("function" === typeof Component)
+    return shouldConstruct(Component) ? 1 : 0;
+  if (void 0 !== Component && null !== Component) {
+    Component = Component.$$typeof;
+    if (Component === REACT_FORWARD_REF_TYPE) return 11;
+    if (Component === REACT_MEMO_TYPE) return 14;
+  }
+  return 2;
+}
+function createWorkInProgress(current, pendingProps) {
   var workInProgress = current.alternate;
   null === workInProgress
-    ? ((workInProgress = new FiberNode(
+    ? ((workInProgress = createFiber(
         current.tag,
         pendingProps,
         current.key,
         current.mode
       )),
+      (workInProgress.elementType = current.elementType),
       (workInProgress.type = current.type),
       (workInProgress.stateNode = current.stateNode),
       (workInProgress.alternate = current),
@@ -1792,10 +1828,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       (workInProgress.actualDuration = 0),
       (workInProgress.actualStartTime = -1));
   workInProgress.childExpirationTime = current.childExpirationTime;
-  workInProgress.expirationTime =
-    pendingProps !== current.pendingProps
-      ? expirationTime
-      : current.expirationTime;
+  workInProgress.expirationTime = current.expirationTime;
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
   workInProgress.memoizedState = current.memoizedState;
@@ -1808,57 +1841,66 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   workInProgress.treeBaseDuration = current.treeBaseDuration;
   return workInProgress;
 }
-function createFiberFromElement(element, mode, expirationTime) {
-  var type = element.type,
-    key = element.key;
-  element = element.props;
-  var fiberTag = void 0;
-  if ("function" === typeof type) fiberTag = shouldConstruct(type) ? 2 : 4;
-  else if ("string" === typeof type) fiberTag = 7;
+function createFiberFromTypeAndProps(
+  type,
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
+  var fiberTag = 2;
+  owner = type;
+  if ("function" === typeof type) shouldConstruct(type) && (fiberTag = 1);
+  else if ("string" === typeof type) fiberTag = 5;
   else
     a: switch (type) {
       case REACT_FRAGMENT_TYPE:
         return createFiberFromFragment(
-          element.children,
+          pendingProps.children,
           mode,
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 3;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(pendingProps, mode | 3, expirationTime, key);
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 2;
-        break;
+        return createFiberFromMode(pendingProps, mode | 2, expirationTime, key);
       case REACT_PROFILER_TYPE:
         return (
-          (type = new FiberNode(15, element, key, mode | 4)),
+          (type = createFiber(12, pendingProps, key, mode | 4)),
+          (type.elementType = REACT_PROFILER_TYPE),
           (type.type = REACT_PROFILER_TYPE),
           (type.expirationTime = expirationTime),
           type
         );
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = 16;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return (
+          (type = createFiber(13, pendingProps, key, mode)),
+          (type.elementType = REACT_SUSPENSE_TYPE),
+          (type.type = REACT_SUSPENSE_TYPE),
+          (type.expirationTime = expirationTime),
+          type
+        );
       default:
         if ("object" === typeof type && null !== type)
           switch (type.$$typeof) {
             case REACT_PROVIDER_TYPE:
-              fiberTag = 12;
+              fiberTag = 10;
               break a;
             case REACT_CONTEXT_TYPE:
-              fiberTag = 11;
+              fiberTag = 9;
               break a;
             case REACT_FORWARD_REF_TYPE:
-              fiberTag = 13;
+              fiberTag = 11;
+              break a;
+            case REACT_MEMO_TYPE:
+              fiberTag = 14;
+              break a;
+            case REACT_LAZY_TYPE:
+              fiberTag = 16;
+              owner = null;
               break a;
-            default:
-              if ("function" === typeof type.then) {
-                fiberTag = 4;
-                break a;
-              }
           }
         invariant(
           !1,
@@ -1867,24 +1909,33 @@ function createFiberFromElement(element, mode, expirationTime) {
           ""
         );
     }
-  mode = new FiberNode(fiberTag, element, key, mode);
-  mode.type = type;
-  mode.expirationTime = expirationTime;
-  return mode;
+  key = createFiber(fiberTag, pendingProps, key, mode);
+  key.elementType = type;
+  key.type = owner;
+  key.expirationTime = expirationTime;
+  return key;
 }
 function createFiberFromFragment(elements, mode, expirationTime, key) {
-  elements = new FiberNode(9, elements, key, mode);
+  elements = createFiber(7, elements, key, mode);
   elements.expirationTime = expirationTime;
   return elements;
 }
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  pendingProps = createFiber(8, pendingProps, key, mode);
+  mode = 0 === (mode & 1) ? REACT_STRICT_MODE_TYPE : REACT_CONCURRENT_MODE_TYPE;
+  pendingProps.elementType = mode;
+  pendingProps.type = mode;
+  pendingProps.expirationTime = expirationTime;
+  return pendingProps;
+}
 function createFiberFromText(content, mode, expirationTime) {
-  content = new FiberNode(8, content, null, mode);
+  content = createFiber(6, content, null, mode);
   content.expirationTime = expirationTime;
   return content;
 }
 function createFiberFromPortal(portal, mode, expirationTime) {
-  mode = new FiberNode(
-    6,
+  mode = createFiber(
+    4,
     null !== portal.children ? portal.children : [],
     portal.key,
     mode
@@ -1902,9 +1953,9 @@ function markPendingPriorityLevel(root, expirationTime) {
   var earliestPendingTime = root.earliestPendingTime;
   0 === earliestPendingTime
     ? (root.earliestPendingTime = root.latestPendingTime = expirationTime)
-    : earliestPendingTime > expirationTime
+    : earliestPendingTime < expirationTime
       ? (root.earliestPendingTime = expirationTime)
-      : root.latestPendingTime < expirationTime &&
+      : root.latestPendingTime > expirationTime &&
         (root.latestPendingTime = expirationTime);
   findNextExpirationTimeToWorkOn(expirationTime, root);
 }
@@ -1919,19 +1970,19 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   else {
     var latestPendingTime = root.latestPendingTime;
     0 !== latestPendingTime &&
-      (latestPendingTime < earliestRemainingTime
+      (latestPendingTime > earliestRemainingTime
         ? (root.earliestPendingTime = root.latestPendingTime = 0)
-        : root.earliestPendingTime < earliestRemainingTime &&
+        : root.earliestPendingTime > earliestRemainingTime &&
           (root.earliestPendingTime = root.latestPendingTime));
     latestPendingTime = root.earliestSuspendedTime;
     0 === latestPendingTime
       ? markPendingPriorityLevel(root, earliestRemainingTime)
-      : earliestRemainingTime > root.latestSuspendedTime
+      : earliestRemainingTime < root.latestSuspendedTime
         ? ((root.earliestSuspendedTime = 0),
           (root.latestSuspendedTime = 0),
           (root.latestPingedTime = 0),
           markPendingPriorityLevel(root, earliestRemainingTime))
-        : earliestRemainingTime < latestPendingTime &&
+        : earliestRemainingTime > latestPendingTime &&
           markPendingPriorityLevel(root, earliestRemainingTime);
   }
   findNextExpirationTimeToWorkOn(0, root);
@@ -1941,17 +1992,17 @@ function hasLowerPriorityWork(root, erroredExpirationTime) {
     latestSuspendedTime = root.latestSuspendedTime;
   root = root.latestPingedTime;
   return (
-    (0 !== latestPendingTime && latestPendingTime > erroredExpirationTime) ||
+    (0 !== latestPendingTime && latestPendingTime < erroredExpirationTime) ||
     (0 !== latestSuspendedTime &&
-      latestSuspendedTime > erroredExpirationTime) ||
-    (0 !== root && root > erroredExpirationTime)
+      latestSuspendedTime < erroredExpirationTime) ||
+    (0 !== root && root < erroredExpirationTime)
   );
 }
 function markSuspendedPriorityLevel(root, suspendedTime) {
   root.didError = !1;
   var latestPingedTime = root.latestPingedTime;
   0 !== latestPingedTime &&
-    latestPingedTime <= suspendedTime &&
+    latestPingedTime >= suspendedTime &&
     (root.latestPingedTime = 0);
   latestPingedTime = root.earliestPendingTime;
   var latestPendingTime = root.latestPendingTime;
@@ -1966,12 +2017,20 @@ function markSuspendedPriorityLevel(root, suspendedTime) {
   latestPendingTime = root.latestSuspendedTime;
   0 === latestPingedTime
     ? (root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime)
-    : latestPingedTime > suspendedTime
+    : latestPingedTime < suspendedTime
       ? (root.earliestSuspendedTime = suspendedTime)
-      : latestPendingTime < suspendedTime &&
+      : latestPendingTime > suspendedTime &&
         (root.latestSuspendedTime = suspendedTime);
   findNextExpirationTimeToWorkOn(suspendedTime, root);
 }
+function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
+  var earliestPendingTime = root.earliestPendingTime;
+  root = root.earliestSuspendedTime;
+  earliestPendingTime > renderExpirationTime &&
+    (renderExpirationTime = earliestPendingTime);
+  root > renderExpirationTime && (renderExpirationTime = root);
+  return renderExpirationTime;
+}
 function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   var earliestSuspendedTime = root.earliestSuspendedTime,
     latestSuspendedTime = root.latestSuspendedTime,
@@ -1981,12 +2040,11 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
     0 !== earliestPendingTime ? earliestPendingTime : latestPingedTime;
   0 === earliestPendingTime &&
     (0 === completedExpirationTime ||
-      latestSuspendedTime > completedExpirationTime) &&
+      latestSuspendedTime < completedExpirationTime) &&
     (earliestPendingTime = latestSuspendedTime);
   completedExpirationTime = earliestPendingTime;
   0 !== completedExpirationTime &&
-    0 !== earliestSuspendedTime &&
-    earliestSuspendedTime < completedExpirationTime &&
+    earliestSuspendedTime > completedExpirationTime &&
     (completedExpirationTime = earliestSuspendedTime);
   root.nextExpirationTimeToWorkOn = earliestPendingTime;
   root.expirationTime = completedExpirationTime;
@@ -2098,7 +2156,7 @@ function getStateFromUpdate(
           : workInProgress
       );
     case 3:
-      workInProgress.effectTag = (workInProgress.effectTag & -1025) | 64;
+      workInProgress.effectTag = (workInProgress.effectTag & -2049) | 64;
     case 0:
       workInProgress = update.payload;
       nextProps =
@@ -2131,58 +2189,52 @@ function processUpdateQueue(
 
   ) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === newFirstUpdate &&
+    updateExpirationTime < renderExpirationTime
+      ? (null === newFirstUpdate &&
           ((newFirstUpdate = update), (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > updateExpirationTime)
-      )
-        newExpirationTime = updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < updateExpirationTime &&
+          (newExpirationTime = updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastEffect
             ? (queue.firstEffect = queue.lastEffect = update)
             : ((queue.lastEffect.nextEffect = update),
-              (queue.lastEffect = update)));
+              (queue.lastEffect = update))));
     update = update.next;
   }
   updateExpirationTime = null;
   for (update = queue.firstCapturedUpdate; null !== update; ) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === updateExpirationTime &&
+    _updateExpirationTime < renderExpirationTime
+      ? (null === updateExpirationTime &&
           ((updateExpirationTime = update),
           null === newFirstUpdate && (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > _updateExpirationTime)
-      )
-        newExpirationTime = _updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < _updateExpirationTime &&
+          (newExpirationTime = _updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastCapturedEffect
             ? (queue.firstCapturedEffect = queue.lastCapturedEffect = update)
             : ((queue.lastCapturedEffect.nextEffect = update),
-              (queue.lastCapturedEffect = update)));
+              (queue.lastCapturedEffect = update))));
     update = update.next;
   }
   null === newFirstUpdate && (queue.lastUpdate = null);
@@ -2263,7 +2315,7 @@ function readContext(context, observedBits) {
     null === lastContextDependency
       ? (invariant(
           null !== currentlyRenderingFiber,
-          "Context.unstable_read(): Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
+          "Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
         ),
         (currentlyRenderingFiber.firstContextDependency = lastContextDependency = observedBits))
       : (lastContextDependency = lastContextDependency.next = observedBits);
@@ -2349,7 +2401,47 @@ function shallowEqual(objA, objB) {
       return !1;
   return !0;
 }
-var emptyRefsObject = new React.Component().refs;
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    baseProps = Object.assign({}, baseProps);
+    Component = Component.defaultProps;
+    for (var propName in Component)
+      void 0 === baseProps[propName] &&
+        (baseProps[propName] = Component[propName]);
+  }
+  return baseProps;
+}
+function readLazyComponentType(lazyComponent) {
+  var result = lazyComponent._result;
+  switch (lazyComponent._status) {
+    case 1:
+      return result;
+    case 2:
+      throw result;
+    case 0:
+      throw result;
+    default:
+      throw ((lazyComponent._status = 0),
+      (result = lazyComponent._ctor),
+      (result = result()),
+      result.then(
+        function(moduleObject) {
+          0 === lazyComponent._status &&
+            ((moduleObject = moduleObject.default),
+            (lazyComponent._status = 1),
+            (lazyComponent._result = moduleObject));
+        },
+        function(error) {
+          0 === lazyComponent._status &&
+            ((lazyComponent._status = 2), (lazyComponent._result = error));
+        }
+      ),
+      (lazyComponent._result = result),
+      result);
+  }
+}
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner,
+  emptyRefsObject = new React.Component().refs;
 function applyDerivedStateFromProps(
   workInProgress,
   ctor,
@@ -2381,6 +2473,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2392,6 +2485,7 @@ var classComponentUpdater = {
     update.tag = 1;
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2402,6 +2496,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.tag = 2;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   }
@@ -2413,30 +2508,52 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = workInProgress.stateNode;
   return "function" === typeof workInProgress.shouldComponentUpdate
-    ? workInProgress.shouldComponentUpdate(
-        newProps,
-        newState,
-        nextLegacyContext
-      )
+    ? workInProgress.shouldComponentUpdate(newProps, newState, nextContext)
     : ctor.prototype && ctor.prototype.isPureReactComponent
       ? !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState)
       : !0;
 }
+function constructClassInstance(workInProgress, ctor, props) {
+  var isLegacyContextConsumer = !1,
+    unmaskedContext = emptyContextObject;
+  var context = ctor.contextType;
+  "object" === typeof context && null !== context
+    ? (context = ReactCurrentOwner$4.currentDispatcher.readContext(context))
+    : ((unmaskedContext = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (isLegacyContextConsumer = ctor.contextTypes),
+      (context = (isLegacyContextConsumer =
+        null !== isLegacyContextConsumer && void 0 !== isLegacyContextConsumer)
+        ? getMaskedContext(workInProgress, unmaskedContext)
+        : emptyContextObject));
+  ctor = new ctor(props, context);
+  workInProgress.memoizedState =
+    null !== ctor.state && void 0 !== ctor.state ? ctor.state : null;
+  ctor.updater = classComponentUpdater;
+  workInProgress.stateNode = ctor;
+  ctor._reactInternalFiber = workInProgress;
+  isLegacyContextConsumer &&
+    ((workInProgress = workInProgress.stateNode),
+    (workInProgress.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
+    (workInProgress.__reactInternalMemoizedMaskedChildContext = context));
+  return ctor;
+}
 function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = instance.state;
   "function" === typeof instance.componentWillReceiveProps &&
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   "function" === typeof instance.UNSAFE_componentWillReceiveProps &&
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   instance.state !== workInProgress &&
     classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
 }
@@ -2446,32 +2563,32 @@ function mountClassInstance(
   newProps,
   renderExpirationTime
 ) {
-  var instance = workInProgress.stateNode,
-    unmaskedContext = isContextProvider(ctor)
-      ? previousContext
-      : contextStackCursor.current;
+  var instance = workInProgress.stateNode;
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
-  unmaskedContext = workInProgress.updateQueue;
-  null !== unmaskedContext &&
+  var contextType = ctor.contextType;
+  "object" === typeof contextType && null !== contextType
+    ? (instance.context = ReactCurrentOwner$4.currentDispatcher.readContext(
+        contextType
+      ))
+    : ((contextType = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (instance.context = getMaskedContext(workInProgress, contextType)));
+  contextType = workInProgress.updateQueue;
+  null !== contextType &&
     (processUpdateQueue(
       workInProgress,
-      unmaskedContext,
+      contextType,
       newProps,
       instance,
       renderExpirationTime
     ),
     (instance.state = workInProgress.memoizedState));
-  unmaskedContext = ctor.getDerivedStateFromProps;
-  "function" === typeof unmaskedContext &&
-    (applyDerivedStateFromProps(
-      workInProgress,
-      ctor,
-      unmaskedContext,
-      newProps
-    ),
+  contextType = ctor.getDerivedStateFromProps;
+  "function" === typeof contextType &&
+    (applyDerivedStateFromProps(workInProgress, ctor, contextType, newProps),
     (instance.state = workInProgress.memoizedState));
   "function" === typeof ctor.getDerivedStateFromProps ||
     "function" === typeof instance.getSnapshotBeforeUpdate ||
@@ -2484,11 +2601,11 @@ function mountClassInstance(
       instance.UNSAFE_componentWillMount(),
     ctor !== instance.state &&
       classComponentUpdater.enqueueReplaceState(instance, instance.state, null),
-    (unmaskedContext = workInProgress.updateQueue),
-    null !== unmaskedContext &&
+    (contextType = workInProgress.updateQueue),
+    null !== contextType &&
       (processUpdateQueue(
         workInProgress,
-        unmaskedContext,
+        contextType,
         newProps,
         instance,
         renderExpirationTime
@@ -2497,7 +2614,7 @@ function mountClassInstance(
   "function" === typeof instance.componentDidMount &&
     (workInProgress.effectTag |= 4);
 }
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 function coerceRef(returnFiber, current$$1, element) {
   returnFiber = element.ref;
   if (
@@ -2509,10 +2626,7 @@ function coerceRef(returnFiber, current$$1, element) {
       element = element._owner;
       var inst = void 0;
       element &&
-        (invariant(
-          2 === element.tag || 3 === element.tag,
-          "Stateless function components cannot have refs."
-        ),
+        (invariant(1 === element.tag, "Function components cannot have refs."),
         (inst = element.stateNode));
       invariant(
         inst,
@@ -2541,7 +2655,7 @@ function coerceRef(returnFiber, current$$1, element) {
     );
     invariant(
       element._owner,
-      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a functional component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
+      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
       returnFiber
     );
   }
@@ -2617,7 +2731,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     textContent,
     expirationTime
   ) {
-    if (null === current$$1 || 8 !== current$$1.tag)
+    if (null === current$$1 || 6 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromText(
           textContent,
@@ -2632,15 +2746,18 @@ function ChildReconciler(shouldTrackSideEffects) {
     return current$$1;
   }
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (null !== current$$1 && current$$1.type === element.type)
+    if (null !== current$$1 && current$$1.elementType === element.type)
       return (
         (expirationTime = useFiber(current$$1, element.props, expirationTime)),
         (expirationTime.ref = coerceRef(returnFiber, current$$1, element)),
         (expirationTime.return = returnFiber),
         expirationTime
       );
-    expirationTime = createFiberFromElement(
-      element,
+    expirationTime = createFiberFromTypeAndProps(
+      element.type,
+      element.key,
+      element.props,
+      null,
       returnFiber.mode,
       expirationTime
     );
@@ -2651,7 +2768,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   function updatePortal(returnFiber, current$$1, portal, expirationTime) {
     if (
       null === current$$1 ||
-      6 !== current$$1.tag ||
+      4 !== current$$1.tag ||
       current$$1.stateNode.containerInfo !== portal.containerInfo ||
       current$$1.stateNode.implementation !== portal.implementation
     )
@@ -2675,7 +2792,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     expirationTime,
     key
   ) {
-    if (null === current$$1 || 9 !== current$$1.tag)
+    if (null === current$$1 || 7 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromFragment(
           fragment,
@@ -2705,8 +2822,11 @@ function ChildReconciler(shouldTrackSideEffects) {
       switch (newChild.$$typeof) {
         case REACT_ELEMENT_TYPE:
           return (
-            (expirationTime = createFiberFromElement(
-              newChild,
+            (expirationTime = createFiberFromTypeAndProps(
+              newChild.type,
+              newChild.key,
+              newChild.props,
+              null,
               returnFiber.mode,
               expirationTime
             )),
@@ -2725,7 +2845,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             newChild
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (newChild = createFiberFromFragment(
             newChild,
@@ -2765,7 +2885,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ? updatePortal(returnFiber, oldFiber, newChild, expirationTime)
             : null;
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return null !== key
           ? null
           : updateFragment(
@@ -2833,7 +2953,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             )
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (existingChildren = existingChildren.get(newIdx) || null),
           updateFragment(
@@ -3050,9 +3170,9 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (isUnkeyedTopLevelFragment.key === isObject)
                 if (
-                  9 === isUnkeyedTopLevelFragment.tag
+                  7 === isUnkeyedTopLevelFragment.tag
                     ? newChild.type === REACT_FRAGMENT_TYPE
-                    : isUnkeyedTopLevelFragment.type === newChild.type
+                    : isUnkeyedTopLevelFragment.elementType === newChild.type
                 ) {
                   deleteRemainingChildren(
                     returnFiber,
@@ -3092,8 +3212,11 @@ function ChildReconciler(shouldTrackSideEffects) {
                 )),
                 (currentFirstChild.return = returnFiber),
                 (returnFiber = currentFirstChild))
-              : ((expirationTime = createFiberFromElement(
-                  newChild,
+              : ((expirationTime = createFiberFromTypeAndProps(
+                  newChild.type,
+                  newChild.key,
+                  newChild.props,
+                  null,
                   returnFiber.mode,
                   expirationTime
                 )),
@@ -3115,7 +3238,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (currentFirstChild.key === isUnkeyedTopLevelFragment)
                 if (
-                  6 === currentFirstChild.tag &&
+                  4 === currentFirstChild.tag &&
                   currentFirstChild.stateNode.containerInfo ===
                     newChild.containerInfo &&
                   currentFirstChild.stateNode.implementation ===
@@ -3153,7 +3276,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     if ("string" === typeof newChild || "number" === typeof newChild)
       return (
         (newChild = "" + newChild),
-        null !== currentFirstChild && 8 === currentFirstChild.tag
+        null !== currentFirstChild && 6 === currentFirstChild.tag
           ? (deleteRemainingChildren(returnFiber, currentFirstChild.sibling),
             (currentFirstChild = useFiber(
               currentFirstChild,
@@ -3172,7 +3295,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             (returnFiber = currentFirstChild)),
         placeSingleChild(returnFiber)
       );
-    if (isArray$1(newChild))
+    if (isArray(newChild))
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -3189,8 +3312,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     isObject && throwOnInvalidObjectType(returnFiber, newChild);
     if ("undefined" === typeof newChild && !isUnkeyedTopLevelFragment)
       switch (returnFiber.tag) {
-        case 2:
-        case 3:
+        case 1:
         case 0:
           (expirationTime = returnFiber.type),
             invariant(
@@ -3209,12 +3331,12 @@ var reconcileChildFibers = ChildReconciler(!0),
   isHydrating = !1;
 function tryHydrate(fiber, nextInstance) {
   switch (fiber.tag) {
-    case 7:
+    case 5:
       return (
         (nextInstance = shim$1(nextInstance, fiber.type, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
       );
-    case 8:
+    case 6:
       return (
         (nextInstance = shim$1(nextInstance, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
@@ -3237,7 +3359,8 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
           return;
         }
         var returnFiber = hydrationParentFiber,
-          fiber = new FiberNode(7, null, null, 0);
+          fiber = createFiber(5, null, null, 0);
+        fiber.elementType = "DELETED";
         fiber.type = "DELETED";
         fiber.stateNode = firstAttemptedInstance;
         fiber.return = returnFiber;
@@ -3255,38 +3378,6 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
         (hydrationParentFiber = fiber$jscomp$0);
   }
 }
-function readLazyComponentType(thenable) {
-  switch (thenable._reactStatus) {
-    case 1:
-      return thenable._reactResult;
-    case 2:
-      throw thenable._reactResult;
-    case 0:
-      throw thenable;
-    default:
-      throw ((thenable._reactStatus = 0),
-      thenable.then(
-        function(resolvedValue) {
-          if (0 === thenable._reactStatus) {
-            thenable._reactStatus = 1;
-            if ("object" === typeof resolvedValue && null !== resolvedValue) {
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                void 0 !== defaultExport && null !== defaultExport
-                  ? defaultExport
-                  : resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          0 === thenable._reactStatus &&
-            ((thenable._reactStatus = 2), (thenable._reactResult = error));
-        }
-      ),
-      thenable);
-  }
-}
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 function reconcileChildren(
   current$$1,
@@ -3312,26 +3403,108 @@ function reconcileChildren(
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  type = type.render;
+  Component = Component.render;
   var ref = workInProgress.ref;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  nextProps = Component(nextProps, ref);
+  workInProgress.effectTag |= 1;
+  reconcileChildren(
+    current$$1,
+    workInProgress,
+    nextProps,
+    renderExpirationTime
+  );
+  return workInProgress.child;
+}
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (null === current$$1) {
+    var type = Component.type;
+    if (
+      "function" === typeof type &&
+      !shouldConstruct(type) &&
+      void 0 === type.defaultProps &&
+      null === Component.compare &&
+      void 0 === Component.defaultProps
+    )
+      return (
+        (workInProgress.tag = 15),
+        (workInProgress.type = type),
+        updateSimpleMemoComponent(
+          current$$1,
+          workInProgress,
+          type,
+          nextProps,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    current$$1 = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    current$$1.ref = workInProgress.ref;
+    current$$1.return = workInProgress;
+    return (workInProgress.child = current$$1);
+  }
+  type = current$$1.child;
   if (
-    !didPerformWorkStackCursor.current &&
-    workInProgress.memoizedProps === nextProps &&
-    ref === (null !== current$$1 ? current$$1.ref : null)
+    updateExpirationTime < renderExpirationTime &&
+    ((updateExpirationTime = type.memoizedProps),
+    (Component = Component.compare),
+    (Component = null !== Component ? Component : shallowEqual),
+    Component(updateExpirationTime, nextProps) &&
+      current$$1.ref === workInProgress.ref)
   )
     return bailoutOnAlreadyFinishedWork(
       current$$1,
       workInProgress,
       renderExpirationTime
     );
-  type = type(nextProps, ref);
-  reconcileChildren(current$$1, workInProgress, type, renderExpirationTime);
-  workInProgress.memoizedProps = nextProps;
-  return workInProgress.child;
+  workInProgress.effectTag |= 1;
+  current$$1 = createWorkInProgress(type, nextProps, renderExpirationTime);
+  current$$1.ref = workInProgress.ref;
+  current$$1.return = workInProgress;
+  return (workInProgress.child = current$$1);
+}
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  return null !== current$$1 &&
+    updateExpirationTime < renderExpirationTime &&
+    shallowEqual(current$$1.memoizedProps, nextProps) &&
+    current$$1.ref === workInProgress.ref
+    ? bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      )
+    : updateFunctionComponent(
+        current$$1,
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      );
 }
 function markRef(current$$1, workInProgress) {
   var ref = workInProgress.ref;
@@ -3341,7 +3514,7 @@ function markRef(current$$1, workInProgress) {
   )
     workInProgress.effectTag |= 128;
 }
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
@@ -3361,7 +3534,6 @@ function updateFunctionalComponent(
     Component,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = nextProps;
   return workInProgress.child;
 }
 function updateClassComponent(
@@ -3376,154 +3548,152 @@ function updateClassComponent(
     pushContextProvider(workInProgress);
   } else hasContext = !1;
   prepareToReadContext(workInProgress, renderExpirationTime);
-  if (null === current$$1)
-    if (null === workInProgress.stateNode) {
-      var unmaskedContext = isContextProvider(Component)
-          ? previousContext
-          : contextStackCursor.current,
-        contextTypes = Component.contextTypes,
-        isContextConsumer = null !== contextTypes && void 0 !== contextTypes;
-      contextTypes = isContextConsumer
-        ? getMaskedContext(workInProgress, unmaskedContext)
-        : emptyContextObject;
-      var instance = new Component(nextProps, contextTypes);
-      workInProgress.memoizedState =
-        null !== instance.state && void 0 !== instance.state
-          ? instance.state
-          : null;
-      instance.updater = classComponentUpdater;
-      workInProgress.stateNode = instance;
-      instance._reactInternalFiber = workInProgress;
-      isContextConsumer &&
-        ((isContextConsumer = workInProgress.stateNode),
-        (isContextConsumer.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
-        (isContextConsumer.__reactInternalMemoizedMaskedChildContext = contextTypes));
+  if (null === workInProgress.stateNode)
+    null !== current$$1 &&
+      ((current$$1.alternate = null),
+      (workInProgress.alternate = null),
+      (workInProgress.effectTag |= 2)),
+      constructClassInstance(
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      ),
       mountClassInstance(
         workInProgress,
         Component,
         nextProps,
         renderExpirationTime
-      );
-      nextProps = !0;
-    } else {
-      unmaskedContext = workInProgress.stateNode;
-      contextTypes = workInProgress.memoizedProps;
-      unmaskedContext.props = contextTypes;
-      var oldContext = unmaskedContext.context;
-      isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current;
-      isContextConsumer = getMaskedContext(workInProgress, isContextConsumer);
-      var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-      (instance =
+      ),
+      (nextProps = !0);
+  else if (null === current$$1) {
+    var instance = workInProgress.stateNode,
+      oldProps = workInProgress.memoizedProps;
+    instance.props = oldProps;
+    var oldContext = instance.context,
+      contextType = Component.contextType;
+    "object" === typeof contextType && null !== contextType
+      ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+          contextType
+        ))
+      : ((contextType = isContextProvider(Component)
+          ? previousContext
+          : contextStackCursor.current),
+        (contextType = getMaskedContext(workInProgress, contextType)));
+    var getDerivedStateFromProps = Component.getDerivedStateFromProps,
+      hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
-          callComponentWillReceiveProps(
-            workInProgress,
-            unmaskedContext,
-            nextProps,
-            isContextConsumer
-          ));
-      hasForceUpdate = !1;
-      var oldState = workInProgress.memoizedState;
-      oldContext = unmaskedContext.state = oldState;
-      var updateQueue = workInProgress.updateQueue;
-      null !== updateQueue &&
-        (processUpdateQueue(
+        "function" === typeof instance.getSnapshotBeforeUpdate;
+    hasNewLifecycles ||
+      ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+        "function" !== typeof instance.componentWillReceiveProps) ||
+      ((oldProps !== nextProps || oldContext !== contextType) &&
+        callComponentWillReceiveProps(
           workInProgress,
-          updateQueue,
+          instance,
           nextProps,
-          unmaskedContext,
-          renderExpirationTime
-        ),
-        (oldContext = workInProgress.memoizedState));
-      contextTypes !== nextProps ||
-      oldState !== oldContext ||
-      didPerformWorkStackCursor.current ||
-      hasForceUpdate
-        ? ("function" === typeof getDerivedStateFromProps &&
-            (applyDerivedStateFromProps(
-              workInProgress,
-              Component,
-              getDerivedStateFromProps,
-              nextProps
-            ),
-            (oldContext = workInProgress.memoizedState)),
-          (contextTypes =
-            hasForceUpdate ||
-            checkShouldComponentUpdate(
-              workInProgress,
-              Component,
-              contextTypes,
-              nextProps,
-              oldState,
-              oldContext,
-              isContextConsumer
-            ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  "function" !== typeof unmaskedContext.componentWillMount) ||
-                ("function" === typeof unmaskedContext.componentWillMount &&
-                  unmaskedContext.componentWillMount(),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  unmaskedContext.UNSAFE_componentWillMount()),
-              "function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4))
-            : ("function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4),
-              (workInProgress.memoizedProps = nextProps),
-              (workInProgress.memoizedState = oldContext)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldContext),
-          (unmaskedContext.context = isContextConsumer),
-          (nextProps = contextTypes))
-        : ("function" === typeof unmaskedContext.componentDidMount &&
-            (workInProgress.effectTag |= 4),
-          (nextProps = !1));
-    }
-  else
-    (unmaskedContext = workInProgress.stateNode),
-      (contextTypes = workInProgress.memoizedProps),
-      (unmaskedContext.props = contextTypes),
-      (oldContext = unmaskedContext.context),
-      (isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current),
-      (isContextConsumer = getMaskedContext(workInProgress, isContextConsumer)),
+          contextType
+        ));
+    hasForceUpdate = !1;
+    var oldState = workInProgress.memoizedState;
+    oldContext = instance.state = oldState;
+    var updateQueue = workInProgress.updateQueue;
+    null !== updateQueue &&
+      (processUpdateQueue(
+        workInProgress,
+        updateQueue,
+        nextProps,
+        instance,
+        renderExpirationTime
+      ),
+      (oldContext = workInProgress.memoizedState));
+    oldProps !== nextProps ||
+    oldState !== oldContext ||
+    didPerformWorkStackCursor.current ||
+    hasForceUpdate
+      ? ("function" === typeof getDerivedStateFromProps &&
+          (applyDerivedStateFromProps(
+            workInProgress,
+            Component,
+            getDerivedStateFromProps,
+            nextProps
+          ),
+          (oldContext = workInProgress.memoizedState)),
+        (oldProps =
+          hasForceUpdate ||
+          checkShouldComponentUpdate(
+            workInProgress,
+            Component,
+            oldProps,
+            nextProps,
+            oldState,
+            oldContext,
+            contextType
+          ))
+          ? (hasNewLifecycles ||
+              ("function" !== typeof instance.UNSAFE_componentWillMount &&
+                "function" !== typeof instance.componentWillMount) ||
+              ("function" === typeof instance.componentWillMount &&
+                instance.componentWillMount(),
+              "function" === typeof instance.UNSAFE_componentWillMount &&
+                instance.UNSAFE_componentWillMount()),
+            "function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4))
+          : ("function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4),
+            (workInProgress.memoizedProps = nextProps),
+            (workInProgress.memoizedState = oldContext)),
+        (instance.props = nextProps),
+        (instance.state = oldContext),
+        (instance.context = contextType),
+        (nextProps = oldProps))
+      : ("function" === typeof instance.componentDidMount &&
+          (workInProgress.effectTag |= 4),
+        (nextProps = !1));
+  } else
+    (instance = workInProgress.stateNode),
+      (oldProps = workInProgress.memoizedProps),
+      (instance.props =
+        workInProgress.type === workInProgress.elementType
+          ? oldProps
+          : resolveDefaultProps(workInProgress.type, oldProps)),
+      (oldContext = instance.context),
+      (contextType = Component.contextType),
+      "object" === typeof contextType && null !== contextType
+        ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+            contextType
+          ))
+        : ((contextType = isContextProvider(Component)
+            ? previousContext
+            : contextStackCursor.current),
+          (contextType = getMaskedContext(workInProgress, contextType))),
       (getDerivedStateFromProps = Component.getDerivedStateFromProps),
-      (instance =
+      (hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
+        "function" === typeof instance.getSnapshotBeforeUpdate) ||
+        ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+          "function" !== typeof instance.componentWillReceiveProps) ||
+        ((oldProps !== nextProps || oldContext !== contextType) &&
           callComponentWillReceiveProps(
             workInProgress,
-            unmaskedContext,
+            instance,
             nextProps,
-            isContextConsumer
+            contextType
           )),
       (hasForceUpdate = !1),
       (oldContext = workInProgress.memoizedState),
-      (oldState = unmaskedContext.state = oldContext),
+      (oldState = instance.state = oldContext),
       (updateQueue = workInProgress.updateQueue),
       null !== updateQueue &&
         (processUpdateQueue(
           workInProgress,
           updateQueue,
           nextProps,
-          unmaskedContext,
+          instance,
           renderExpirationTime
         ),
         (oldState = workInProgress.memoizedState)),
-      contextTypes !== nextProps ||
+      oldProps !== nextProps ||
       oldContext !== oldState ||
       didPerformWorkStackCursor.current ||
       hasForceUpdate
@@ -3540,53 +3710,51 @@ function updateClassComponent(
             checkShouldComponentUpdate(
               workInProgress,
               Component,
-              contextTypes,
+              oldProps,
               nextProps,
               oldContext,
               oldState,
-              isContextConsumer
+              contextType
             ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  "function" !== typeof unmaskedContext.componentWillUpdate) ||
-                ("function" === typeof unmaskedContext.componentWillUpdate &&
-                  unmaskedContext.componentWillUpdate(
+            ? (hasNewLifecycles ||
+                ("function" !== typeof instance.UNSAFE_componentWillUpdate &&
+                  "function" !== typeof instance.componentWillUpdate) ||
+                ("function" === typeof instance.componentWillUpdate &&
+                  instance.componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   ),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  unmaskedContext.UNSAFE_componentWillUpdate(
+                "function" === typeof instance.UNSAFE_componentWillUpdate &&
+                  instance.UNSAFE_componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   )),
-              "function" === typeof unmaskedContext.componentDidUpdate &&
+              "function" === typeof instance.componentDidUpdate &&
                 (workInProgress.effectTag |= 4),
-              "function" === typeof unmaskedContext.getSnapshotBeforeUpdate &&
+              "function" === typeof instance.getSnapshotBeforeUpdate &&
                 (workInProgress.effectTag |= 256))
-            : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+            : ("function" !== typeof instance.componentDidUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 4),
-              "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+              "function" !== typeof instance.getSnapshotBeforeUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 256),
               (workInProgress.memoizedProps = nextProps),
               (workInProgress.memoizedState = oldState)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldState),
-          (unmaskedContext.context = isContextConsumer),
+          (instance.props = nextProps),
+          (instance.state = oldState),
+          (instance.context = contextType),
           (nextProps = getDerivedStateFromProps))
-        : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+        : ("function" !== typeof instance.componentDidUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 4),
-          "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+          "function" !== typeof instance.getSnapshotBeforeUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 256),
           (nextProps = !1));
@@ -3620,23 +3788,35 @@ function finishClassComponent(
     );
   shouldUpdate = workInProgress.stateNode;
   ReactCurrentOwner$3.current = workInProgress;
-  if (didCaptureError) {
+  if (
+    didCaptureError &&
+    "function" !== typeof Component.getDerivedStateFromError
+  ) {
     var nextChildren = null;
     profilerStartTime = -1;
   } else nextChildren = shouldUpdate.render();
   workInProgress.effectTag |= 1;
-  null !== current$$1 &&
-    didCaptureError &&
-    (reconcileChildren(current$$1, workInProgress, null, renderExpirationTime),
-    (workInProgress.child = null));
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
+  null !== current$$1 && didCaptureError
+    ? ((didCaptureError = nextChildren),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        current$$1.child,
+        null,
+        renderExpirationTime
+      )),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        null,
+        didCaptureError,
+        renderExpirationTime
+      )))
+    : reconcileChildren(
+        current$$1,
+        workInProgress,
+        nextChildren,
+        renderExpirationTime
+      );
   workInProgress.memoizedState = shouldUpdate.state;
-  workInProgress.memoizedProps = shouldUpdate.props;
   hasContext && invalidateContextProvider(workInProgress, Component, !0);
   return workInProgress.child;
 }
@@ -3652,131 +3832,123 @@ function pushHostRootContext(workInProgress) {
       pushTopLevelContextObject(workInProgress, root.context, !1);
   pushHostContainer(workInProgress, root.containerInfo);
 }
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    baseProps = Object.assign({}, baseProps);
-    Component = Component.defaultProps;
-    for (var propName in Component)
-      void 0 === baseProps[propName] &&
-        (baseProps[propName] = Component[propName]);
-  }
-  return baseProps;
-}
-function mountIndeterminateComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
-  Component,
   renderExpirationTime
 ) {
-  invariant(
-    null === current$$1,
-    "An indeterminate component should never have mounted. This error is likely caused by a bug in React. Please file an issue."
-  );
-  var props = workInProgress.pendingProps;
-  if (
-    "object" === typeof Component &&
-    null !== Component &&
-    "function" === typeof Component.then
-  ) {
-    Component = readLazyComponentType(Component);
-    var JSCompiler_inline_result = Component;
-    JSCompiler_inline_result =
-      "function" === typeof JSCompiler_inline_result
-        ? shouldConstruct(JSCompiler_inline_result)
-          ? 3
-          : 1
-        : void 0 !== JSCompiler_inline_result &&
-          null !== JSCompiler_inline_result &&
-          JSCompiler_inline_result.$$typeof
-          ? 14
-          : 4;
-    JSCompiler_inline_result = workInProgress.tag = JSCompiler_inline_result;
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (JSCompiler_inline_result) {
-      case 1:
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 3:
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 14:
-        return updateForwardRef(
-          current$$1,
+  var mode = workInProgress.mode,
+    nextProps = workInProgress.pendingProps,
+    nextState = workInProgress.memoizedState;
+  if (0 === (workInProgress.effectTag & 64)) {
+    nextState = null;
+    var nextDidTimeout = !1;
+  } else
+    (nextState = { timedOutAt: null !== nextState ? nextState.timedOutAt : 0 }),
+      (nextDidTimeout = !0),
+      (workInProgress.effectTag &= -65);
+  if (null === current$$1)
+    nextDidTimeout
+      ? ((nextDidTimeout = nextProps.fallback),
+        (nextProps = createFiberFromFragment(null, mode, 0, null)),
+        0 === (workInProgress.mode & 1) &&
+          (nextProps.child =
+            null !== workInProgress.memoizedState
+              ? workInProgress.child.child
+              : workInProgress.child),
+        (renderExpirationTime = createFiberFromFragment(
+          nextDidTimeout,
+          mode,
+          renderExpirationTime,
+          null
+        )),
+        (nextProps.sibling = renderExpirationTime),
+        (mode = nextProps),
+        (mode.return = renderExpirationTime.return = workInProgress))
+      : (mode = renderExpirationTime = mountChildFibers(
           workInProgress,
-          Component,
-          resolvedProps,
+          null,
+          nextProps.children,
           renderExpirationTime
-        );
-      default:
-        invariant(
-          !1,
-          "Element type is invalid. Received a promise that resolves to: %s. Promise elements must resolve to a class or function.",
-          Component
-        );
-    }
-  }
-  JSCompiler_inline_result = getMaskedContext(
-    workInProgress,
-    contextStackCursor.current
-  );
-  prepareToReadContext(workInProgress, renderExpirationTime);
-  JSCompiler_inline_result = Component(props, JSCompiler_inline_result);
-  workInProgress.effectTag |= 1;
-  if (
-    "object" === typeof JSCompiler_inline_result &&
-    null !== JSCompiler_inline_result &&
-    "function" === typeof JSCompiler_inline_result.render &&
-    void 0 === JSCompiler_inline_result.$$typeof
-  ) {
-    workInProgress.tag = 2;
-    isContextProvider(Component)
-      ? ((resolvedProps = !0), pushContextProvider(workInProgress))
-      : (resolvedProps = !1);
-    workInProgress.memoizedState =
-      null !== JSCompiler_inline_result.state &&
-      void 0 !== JSCompiler_inline_result.state
-        ? JSCompiler_inline_result.state
-        : null;
-    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-    "function" === typeof getDerivedStateFromProps &&
-      applyDerivedStateFromProps(
+        ));
+  else if (null !== current$$1.memoizedState)
+    if (
+      ((current$$1 = current$$1.child),
+      (mode = current$$1.sibling),
+      nextDidTimeout)
+    ) {
+      nextProps = nextProps.fallback;
+      renderExpirationTime = createWorkInProgress(
+        current$$1,
+        current$$1.pendingProps,
+        0
+      );
+      0 === (workInProgress.mode & 1) &&
+        ((nextDidTimeout =
+          null !== workInProgress.memoizedState
+            ? workInProgress.child.child
+            : workInProgress.child),
+        nextDidTimeout !== current$$1.child &&
+          (renderExpirationTime.child = nextDidTimeout));
+      if (workInProgress.mode & 4) {
+        nextDidTimeout = 0;
+        for (current$$1 = renderExpirationTime.child; null !== current$$1; )
+          (nextDidTimeout += current$$1.treeBaseDuration),
+            (current$$1 = current$$1.sibling);
+        renderExpirationTime.treeBaseDuration = nextDidTimeout;
+      }
+      nextProps = renderExpirationTime.sibling = createWorkInProgress(
+        mode,
+        nextProps,
+        mode.expirationTime
+      );
+      mode = renderExpirationTime;
+      renderExpirationTime.childExpirationTime = 0;
+      renderExpirationTime = nextProps;
+      mode.return = renderExpirationTime.return = workInProgress;
+    } else
+      mode = renderExpirationTime = reconcileChildFibers(
         workInProgress,
-        Component,
-        getDerivedStateFromProps,
-        props
+        current$$1.child,
+        nextProps.children,
+        renderExpirationTime
       );
-    JSCompiler_inline_result.updater = classComponentUpdater;
-    workInProgress.stateNode = JSCompiler_inline_result;
-    JSCompiler_inline_result._reactInternalFiber = workInProgress;
-    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
-    return finishClassComponent(
-      current$$1,
+  else if (((current$$1 = current$$1.child), nextDidTimeout)) {
+    nextDidTimeout = nextProps.fallback;
+    nextProps = createFiberFromFragment(null, mode, 0, null);
+    nextProps.child = current$$1;
+    0 === (workInProgress.mode & 1) &&
+      (nextProps.child =
+        null !== workInProgress.memoizedState
+          ? workInProgress.child.child
+          : workInProgress.child);
+    if (workInProgress.mode & 4) {
+      current$$1 = 0;
+      for (var _hiddenChild = nextProps.child; null !== _hiddenChild; )
+        (current$$1 += _hiddenChild.treeBaseDuration),
+          (_hiddenChild = _hiddenChild.sibling);
+      nextProps.treeBaseDuration = current$$1;
+    }
+    renderExpirationTime = nextProps.sibling = createFiberFromFragment(
+      nextDidTimeout,
+      mode,
+      renderExpirationTime,
+      null
+    );
+    renderExpirationTime.effectTag |= 2;
+    mode = nextProps;
+    nextProps.childExpirationTime = 0;
+    mode.return = renderExpirationTime.return = workInProgress;
+  } else
+    renderExpirationTime = mode = reconcileChildFibers(
       workInProgress,
-      Component,
-      !0,
-      resolvedProps,
+      current$$1,
+      nextProps.children,
       renderExpirationTime
     );
-  }
-  workInProgress.tag = 0;
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    JSCompiler_inline_result,
-    renderExpirationTime
-  );
-  workInProgress.memoizedProps = props;
-  return workInProgress.child;
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = mode;
+  return renderExpirationTime;
 }
 function bailoutOnAlreadyFinishedWork(
   current$$1,
@@ -3786,9 +3958,7 @@ function bailoutOnAlreadyFinishedWork(
   null !== current$$1 &&
     (workInProgress.firstContextDependency = current$$1.firstContextDependency);
   profilerStartTime = -1;
-  var childExpirationTime = workInProgress.childExpirationTime;
-  if (0 === childExpirationTime || childExpirationTime > renderExpirationTime)
-    return null;
+  if (workInProgress.childExpirationTime < renderExpirationTime) return null;
   invariant(
     null === current$$1 || workInProgress.child === current$$1.child,
     "Resuming work not yet implemented."
@@ -3820,35 +3990,53 @@ function bailoutOnAlreadyFinishedWork(
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
   if (
+    null !== current$$1 &&
+    current$$1.memoizedProps === workInProgress.pendingProps &&
     !didPerformWorkStackCursor.current &&
-    (0 === updateExpirationTime || updateExpirationTime > renderExpirationTime)
+    updateExpirationTime < renderExpirationTime
   ) {
     switch (workInProgress.tag) {
-      case 5:
+      case 3:
         pushHostRootContext(workInProgress);
         break;
-      case 7:
+      case 5:
         pushHostContext(workInProgress);
         break;
-      case 2:
+      case 1:
         isContextProvider(workInProgress.type) &&
           pushContextProvider(workInProgress);
         break;
-      case 3:
-        isContextProvider(workInProgress.type._reactResult) &&
-          pushContextProvider(workInProgress);
-        break;
-      case 6:
+      case 4:
         pushHostContainer(
           workInProgress,
           workInProgress.stateNode.containerInfo
         );
         break;
-      case 12:
+      case 10:
         pushProvider(workInProgress, workInProgress.memoizedProps.value);
         break;
-      case 15:
+      case 12:
         workInProgress.effectTag |= 4;
+        break;
+      case 13:
+        if (null !== workInProgress.memoizedState) {
+          updateExpirationTime = workInProgress.child.childExpirationTime;
+          if (
+            0 !== updateExpirationTime &&
+            updateExpirationTime >= renderExpirationTime
+          )
+            return updateSuspenseComponent(
+              current$$1,
+              workInProgress,
+              renderExpirationTime
+            );
+          workInProgress = bailoutOnAlreadyFinishedWork(
+            current$$1,
+            workInProgress,
+            renderExpirationTime
+          );
+          return null !== workInProgress ? workInProgress.sibling : null;
+        }
     }
     return bailoutOnAlreadyFinishedWork(
       current$$1,
@@ -3858,56 +4046,163 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
   }
   workInProgress.expirationTime = 0;
   switch (workInProgress.tag) {
-    case 4:
-      return mountIndeterminateComponent(
-        current$$1,
+    case 2:
+      updateExpirationTime = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      current$$1 = workInProgress.pendingProps;
+      var context = getMaskedContext(
         workInProgress,
-        workInProgress.type,
-        renderExpirationTime
+        contextStackCursor.current
       );
+      prepareToReadContext(workInProgress, renderExpirationTime);
+      context = updateExpirationTime(current$$1, context);
+      workInProgress.effectTag |= 1;
+      if (
+        "object" === typeof context &&
+        null !== context &&
+        "function" === typeof context.render &&
+        void 0 === context.$$typeof
+      ) {
+        workInProgress.tag = 1;
+        if (isContextProvider(updateExpirationTime)) {
+          var hasContext = !0;
+          pushContextProvider(workInProgress);
+        } else hasContext = !1;
+        workInProgress.memoizedState =
+          null !== context.state && void 0 !== context.state
+            ? context.state
+            : null;
+        var getDerivedStateFromProps =
+          updateExpirationTime.getDerivedStateFromProps;
+        "function" === typeof getDerivedStateFromProps &&
+          applyDerivedStateFromProps(
+            workInProgress,
+            updateExpirationTime,
+            getDerivedStateFromProps,
+            current$$1
+          );
+        context.updater = classComponentUpdater;
+        workInProgress.stateNode = context;
+        context._reactInternalFiber = workInProgress;
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          current$$1,
+          renderExpirationTime
+        );
+        workInProgress = finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          hasContext,
+          renderExpirationTime
+        );
+      } else
+        (workInProgress.tag = 0),
+          reconcileChildren(
+            null,
+            workInProgress,
+            context,
+            renderExpirationTime
+          ),
+          (workInProgress = workInProgress.child);
+      return workInProgress;
+    case 16:
+      context = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      hasContext = workInProgress.pendingProps;
+      current$$1 = readLazyComponentType(context);
+      workInProgress.type = current$$1;
+      context = workInProgress.tag = resolveLazyComponentTag(current$$1);
+      hasContext = resolveDefaultProps(current$$1, hasContext);
+      getDerivedStateFromProps = void 0;
+      switch (context) {
+        case 0:
+          getDerivedStateFromProps = updateFunctionComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 1:
+          getDerivedStateFromProps = updateClassComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 11:
+          getDerivedStateFromProps = updateForwardRef(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 14:
+          getDerivedStateFromProps = updateMemoComponent(
+            null,
+            workInProgress,
+            current$$1,
+            resolveDefaultProps(current$$1.type, hasContext),
+            updateExpirationTime,
+            renderExpirationTime
+          );
+          break;
+        default:
+          invariant(
+            !1,
+            "Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",
+            current$$1,
+            ""
+          );
+      }
+      return getDerivedStateFromProps;
     case 0:
-      return updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateFunctionComponent(
+          current$$1,
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        )
       );
     case 1:
-      var _Component5 = workInProgress.type._reactResult;
-      updateExpirationTime = workInProgress.pendingProps;
-      current$$1 = updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, updateExpirationTime),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = updateExpirationTime;
-      return current$$1;
-    case 2:
-      return updateClassComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 3:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateClassComponent(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateClassComponent(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 5:
+    case 3:
       return (
         pushHostRootContext(workInProgress),
         (updateExpirationTime = workInProgress.updateQueue),
@@ -3915,8 +4210,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           null !== updateExpirationTime,
           "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue."
         ),
-        (_Component5 = workInProgress.memoizedState),
-        (_Component5 = null !== _Component5 ? _Component5.element : null),
+        (context = workInProgress.memoizedState),
+        (context = null !== context ? context.element : null),
         processUpdateQueue(
           workInProgress,
           updateExpirationTime,
@@ -3925,7 +4220,7 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           renderExpirationTime
         ),
         (updateExpirationTime = workInProgress.memoizedState.element),
-        updateExpirationTime === _Component5
+        updateExpirationTime === context
           ? (workInProgress = bailoutOnAlreadyFinishedWork(
               current$$1,
               workInProgress,
@@ -3940,32 +4235,33 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             (workInProgress = workInProgress.child)),
         workInProgress
       );
-    case 7:
+    case 5:
       return (
         pushHostContext(workInProgress),
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (updateExpirationTime = workInProgress.pendingProps.children),
         markRef(current$$1, workInProgress),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         (workInProgress = workInProgress.child),
         workInProgress
       );
-    case 8:
+    case 6:
       return (
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (workInProgress.memoizedProps = workInProgress.pendingProps),
         null
       );
-    case 16:
-      return null;
-    case 6:
+    case 13:
+      return updateSuspenseComponent(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    case 4:
       return (
         pushHostContainer(
           workInProgress,
@@ -3985,93 +4281,79 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
               updateExpirationTime,
               renderExpirationTime
             ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 13:
-      return updateForwardRef(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 14:
+    case 11:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateForwardRef(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateForwardRef(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 9:
+    case 7:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 10:
+    case 8:
       return (
-        (updateExpirationTime = workInProgress.pendingProps.children),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 15:
+    case 12:
       return (
         (workInProgress.effectTag |= 4),
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime.children,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 12:
+    case 10:
       a: {
         updateExpirationTime = workInProgress.type._context;
-        _Component5 = workInProgress.pendingProps;
-        var oldProps = workInProgress.memoizedProps,
-          newValue = _Component5.value;
-        workInProgress.memoizedProps = _Component5;
-        pushProvider(workInProgress, newValue);
-        if (null !== oldProps) {
-          var oldValue = oldProps.value;
-          newValue =
-            (oldValue === newValue &&
-              (0 !== oldValue || 1 / oldValue === 1 / newValue)) ||
-            (oldValue !== oldValue && newValue !== newValue)
+        context = workInProgress.pendingProps;
+        getDerivedStateFromProps = workInProgress.memoizedProps;
+        hasContext = context.value;
+        pushProvider(workInProgress, hasContext);
+        if (null !== getDerivedStateFromProps) {
+          var oldValue = getDerivedStateFromProps.value;
+          hasContext =
+            (oldValue === hasContext &&
+              (0 !== oldValue || 1 / oldValue === 1 / hasContext)) ||
+            (oldValue !== oldValue && hasContext !== hasContext)
               ? 0
               : ("function" ===
                 typeof updateExpirationTime._calculateChangedBits
                   ? updateExpirationTime._calculateChangedBits(
                       oldValue,
-                      newValue
+                      hasContext
                     )
                   : 1073741823) | 0;
-          if (0 === newValue) {
+          if (0 === hasContext) {
             if (
-              oldProps.children === _Component5.children &&
+              getDerivedStateFromProps.children === context.children &&
               !didPerformWorkStackCursor.current
             ) {
               workInProgress = bailoutOnAlreadyFinishedWork(
@@ -4083,113 +4365,175 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             }
           } else
             for (
-              oldProps = workInProgress.child,
-                null !== oldProps && (oldProps.return = workInProgress);
-              null !== oldProps;
+              getDerivedStateFromProps = workInProgress.child,
+                null !== getDerivedStateFromProps &&
+                  (getDerivedStateFromProps.return = workInProgress);
+              null !== getDerivedStateFromProps;
 
             ) {
-              oldValue = oldProps.firstContextDependency;
+              oldValue = getDerivedStateFromProps.firstContextDependency;
               if (null !== oldValue) {
                 do {
                   if (
                     oldValue.context === updateExpirationTime &&
-                    0 !== (oldValue.observedBits & newValue)
+                    0 !== (oldValue.observedBits & hasContext)
                   ) {
-                    if (2 === oldProps.tag || 3 === oldProps.tag) {
+                    if (1 === getDerivedStateFromProps.tag) {
                       var nextFiber = createUpdate(renderExpirationTime);
                       nextFiber.tag = 2;
-                      enqueueUpdate(oldProps, nextFiber);
+                      enqueueUpdate(getDerivedStateFromProps, nextFiber);
                     }
-                    if (
-                      0 === oldProps.expirationTime ||
-                      oldProps.expirationTime > renderExpirationTime
-                    )
-                      oldProps.expirationTime = renderExpirationTime;
-                    nextFiber = oldProps.alternate;
+                    getDerivedStateFromProps.expirationTime <
+                      renderExpirationTime &&
+                      (getDerivedStateFromProps.expirationTime = renderExpirationTime);
+                    nextFiber = getDerivedStateFromProps.alternate;
                     null !== nextFiber &&
-                      (0 === nextFiber.expirationTime ||
-                        nextFiber.expirationTime > renderExpirationTime) &&
+                      nextFiber.expirationTime < renderExpirationTime &&
                       (nextFiber.expirationTime = renderExpirationTime);
-                    for (var node = oldProps.return; null !== node; ) {
+                    for (
+                      var node = getDerivedStateFromProps.return;
+                      null !== node;
+
+                    ) {
                       nextFiber = node.alternate;
-                      if (
-                        0 === node.childExpirationTime ||
-                        node.childExpirationTime > renderExpirationTime
-                      )
+                      if (node.childExpirationTime < renderExpirationTime)
                         (node.childExpirationTime = renderExpirationTime),
                           null !== nextFiber &&
-                            (0 === nextFiber.childExpirationTime ||
-                              nextFiber.childExpirationTime >
-                                renderExpirationTime) &&
+                            nextFiber.childExpirationTime <
+                              renderExpirationTime &&
                             (nextFiber.childExpirationTime = renderExpirationTime);
                       else if (
                         null !== nextFiber &&
-                        (0 === nextFiber.childExpirationTime ||
-                          nextFiber.childExpirationTime > renderExpirationTime)
+                        nextFiber.childExpirationTime < renderExpirationTime
                       )
                         nextFiber.childExpirationTime = renderExpirationTime;
                       else break;
                       node = node.return;
                     }
                   }
-                  nextFiber = oldProps.child;
+                  nextFiber = getDerivedStateFromProps.child;
                   oldValue = oldValue.next;
                 } while (null !== oldValue);
               } else
                 nextFiber =
-                  12 === oldProps.tag
-                    ? oldProps.type === workInProgress.type
+                  10 === getDerivedStateFromProps.tag
+                    ? getDerivedStateFromProps.type === workInProgress.type
                       ? null
-                      : oldProps.child
-                    : oldProps.child;
-              if (null !== nextFiber) nextFiber.return = oldProps;
+                      : getDerivedStateFromProps.child
+                    : getDerivedStateFromProps.child;
+              if (null !== nextFiber)
+                nextFiber.return = getDerivedStateFromProps;
               else
-                for (nextFiber = oldProps; null !== nextFiber; ) {
+                for (
+                  nextFiber = getDerivedStateFromProps;
+                  null !== nextFiber;
+
+                ) {
                   if (nextFiber === workInProgress) {
                     nextFiber = null;
                     break;
                   }
-                  oldProps = nextFiber.sibling;
-                  if (null !== oldProps) {
-                    oldProps.return = nextFiber.return;
-                    nextFiber = oldProps;
+                  getDerivedStateFromProps = nextFiber.sibling;
+                  if (null !== getDerivedStateFromProps) {
+                    getDerivedStateFromProps.return = nextFiber.return;
+                    nextFiber = getDerivedStateFromProps;
                     break;
                   }
                   nextFiber = nextFiber.return;
                 }
-              oldProps = nextFiber;
+              getDerivedStateFromProps = nextFiber;
             }
         }
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5.children,
+          context.children,
           renderExpirationTime
         );
         workInProgress = workInProgress.child;
       }
       return workInProgress;
-    case 11:
+    case 9:
       return (
-        (newValue = workInProgress.type),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (context = workInProgress.type),
+        (hasContext = workInProgress.pendingProps),
+        (updateExpirationTime = hasContext.children),
         prepareToReadContext(workInProgress, renderExpirationTime),
-        (newValue = readContext(
-          newValue,
-          updateExpirationTime.unstable_observedBits
-        )),
-        (_Component5 = _Component5(newValue)),
+        (context = readContext(context, hasContext.unstable_observedBits)),
+        (updateExpirationTime = updateExpirationTime(context)),
         (workInProgress.effectTag |= 1),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
+    case 14:
+      return (
+        (context = workInProgress.type),
+        (hasContext = resolveDefaultProps(
+          context,
+          workInProgress.pendingProps
+        )),
+        (hasContext = resolveDefaultProps(context.type, hasContext)),
+        updateMemoComponent(
+          current$$1,
+          workInProgress,
+          context,
+          hasContext,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    case 15:
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    case 17:
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        null !== current$$1 &&
+          ((current$$1.alternate = null),
+          (workInProgress.alternate = null),
+          (workInProgress.effectTag |= 2)),
+        (workInProgress.tag = 1),
+        isContextProvider(updateExpirationTime)
+          ? ((current$$1 = !0), pushContextProvider(workInProgress))
+          : (current$$1 = !1),
+        prepareToReadContext(workInProgress, renderExpirationTime),
+        constructClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          current$$1,
+          renderExpirationTime
+        )
+      );
     default:
       invariant(
         !1,
@@ -4197,14 +4541,113 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
   }
 }
-function appendAllChildren(parent, workInProgress) {
+var appendAllChildren = void 0,
+  updateHostContainer = void 0,
+  updateHostComponent$1 = void 0,
+  updateHostText$1 = void 0;
+appendAllChildren = function(
+  parent,
+  workInProgress,
+  needsVisibilityToggle,
+  isHidden
+) {
+  for (var node = workInProgress.child; null !== node; ) {
+    a: if (5 === node.tag) {
+      var instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        var props = node.memoizedProps,
+          type = node.type;
+        instance = isHidden
+          ? cloneHiddenInstance(instance, type, props, node)
+          : cloneUnhiddenInstance(instance, type, props, node);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChild(parent.node, instance.node);
+    } else if (6 === node.tag) {
+      instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        instance = node.memoizedProps;
+        props = requiredContext(rootInstanceStackCursor.current);
+        type = requiredContext(contextStackCursor$1.current);
+        if (isHidden) throw Error("Not yet implemented.");
+        instance = createTextInstance(instance, props, type, workInProgress);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChild(parent.node, instance.node);
+    } else if (4 !== node.tag) {
+      if (
+        13 === node.tag &&
+        ((props = node.alternate),
+        null !== props &&
+          ((instance = null !== node.memoizedState),
+          (null !== props.memoizedState) !== instance))
+      ) {
+        props = instance ? node.child : node;
+        null !== props && appendAllChildren(parent, props, !0, instance);
+        break a;
+      }
+      if (null !== node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+    }
+    if (node === workInProgress) break;
+    for (; null === node.sibling; ) {
+      if (null === node.return || node.return === workInProgress) return;
+      node = node.return;
+    }
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+};
+function appendAllChildrenToContainer(
+  containerChildSet,
+  workInProgress,
+  needsVisibilityToggle,
+  isHidden
+) {
   for (var node = workInProgress.child; null !== node; ) {
-    if (7 === node.tag || 8 === node.tag)
-      FabricUIManager.appendChild(parent.node, node.stateNode.node);
-    else if (6 !== node.tag && null !== node.child) {
-      node.child.return = node;
-      node = node.child;
-      continue;
+    a: if (5 === node.tag) {
+      var instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        var props = node.memoizedProps,
+          type = node.type;
+        instance = isHidden
+          ? cloneHiddenInstance(instance, type, props, node)
+          : cloneUnhiddenInstance(instance, type, props, node);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChildToSet(containerChildSet, instance.node);
+    } else if (6 === node.tag) {
+      instance = node.stateNode;
+      if (needsVisibilityToggle) {
+        instance = node.memoizedProps;
+        props = requiredContext(rootInstanceStackCursor.current);
+        type = requiredContext(contextStackCursor$1.current);
+        if (isHidden) throw Error("Not yet implemented.");
+        instance = createTextInstance(instance, props, type, workInProgress);
+        node.stateNode = instance;
+      }
+      FabricUIManager.appendChildToSet(containerChildSet, instance.node);
+    } else if (4 !== node.tag) {
+      if (
+        13 === node.tag &&
+        ((props = node.alternate),
+        null !== props &&
+          ((instance = null !== node.memoizedState),
+          (null !== props.memoizedState) !== instance))
+      ) {
+        props = instance ? node.child : node;
+        null !== props &&
+          appendAllChildrenToContainer(containerChildSet, props, !0, instance);
+        break a;
+      }
+      if (null !== node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
     }
     if (node === workInProgress) break;
     for (; null === node.sibling; ) {
@@ -4215,30 +4658,12 @@ function appendAllChildren(parent, workInProgress) {
     node = node.sibling;
   }
 }
-var updateHostContainer = void 0,
-  updateHostComponent$1 = void 0,
-  updateHostText$1 = void 0;
 updateHostContainer = function(workInProgress) {
   var portalOrRoot = workInProgress.stateNode;
   if (null !== workInProgress.firstEffect) {
     var container = portalOrRoot.containerInfo,
       newChildSet = FabricUIManager.createChildSet(container);
-    a: for (var node = workInProgress.child; null !== node; ) {
-      if (7 === node.tag || 8 === node.tag)
-        FabricUIManager.appendChildToSet(newChildSet, node.stateNode.node);
-      else if (6 !== node.tag && null !== node.child) {
-        node.child.return = node;
-        node = node.child;
-        continue;
-      }
-      if (node === workInProgress) break a;
-      for (; null === node.sibling; ) {
-        if (null === node.return || node.return === workInProgress) break a;
-        node = node.return;
-      }
-      node.sibling.return = node.return;
-      node = node.sibling;
-    }
+    appendAllChildrenToContainer(newChildSet, workInProgress, !1, !1);
     portalOrRoot.pendingChildren = newChildSet;
     workInProgress.effectTag |= 4;
     FabricUIManager.completeRoot(container, newChildSet);
@@ -4285,7 +4710,7 @@ updateHostComponent$1 = function(current, workInProgress, type, newProps) {
         (workInProgress.stateNode = type),
         current
           ? (workInProgress.effectTag |= 4)
-          : appendAllChildren(type, workInProgress));
+          : appendAllChildren(type, workInProgress, !1, !1));
   }
 };
 updateHostText$1 = function(current, workInProgress, oldText, newText) {
@@ -4335,7 +4760,7 @@ function logError(boundary, errorInfo) {
     willRetry: !1
   };
   null !== boundary &&
-    2 === boundary.tag &&
+    1 === boundary.tag &&
     ((errorInfo.errorBoundary = boundary.stateNode),
     (errorInfo.errorBoundaryName = getComponentName(boundary.type)),
     (errorInfo.errorBoundaryFound = !0),
@@ -4361,16 +4786,22 @@ function safelyDetachRef(current$$1) {
 }
 function commitWork(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case 2:
-    case 3:
-      break;
-    case 7:
-      break;
-    case 8:
+    case 0:
+    case 11:
+    case 14:
+    case 15:
+      return;
+  }
+  switch (finishedWork.tag) {
+    case 1:
       break;
     case 5:
+      break;
     case 6:
       break;
+    case 3:
+    case 4:
+      break;
     default:
       invariant(
         !1,
@@ -4392,13 +4823,21 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   expirationTime = createUpdate(expirationTime);
   expirationTime.tag = 3;
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if ("function" === typeof getDerivedStateFromError) {
+    var error$jscomp$0 = errorInfo.value;
+    expirationTime.payload = function() {
+      return getDerivedStateFromError(error$jscomp$0);
+    };
+  }
   var inst = fiber.stateNode;
   null !== inst &&
     "function" === typeof inst.componentDidCatch &&
     (expirationTime.callback = function() {
-      null === legacyErrorBoundariesThatAlreadyFailed
-        ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
-        : legacyErrorBoundariesThatAlreadyFailed.add(this);
+      "function" !== typeof getDerivedStateFromError &&
+        (null === legacyErrorBoundariesThatAlreadyFailed
+          ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
+          : legacyErrorBoundariesThatAlreadyFailed.add(this));
       var error = errorInfo.value,
         stack = errorInfo.stack;
       logError(fiber, errorInfo);
@@ -4415,39 +4854,121 @@ function throwException(
   value,
   renderExpirationTime
 ) {
-  sourceFiber.effectTag |= 512;
+  sourceFiber.effectTag |= 1024;
   sourceFiber.firstEffect = sourceFiber.lastEffect = null;
+  if (
+    null !== value &&
+    "object" === typeof value &&
+    "function" === typeof value.then
+  ) {
+    var thenable = value;
+    value = returnFiber;
+    var earliestTimeoutMs = -1,
+      startTimeMs = -1;
+    do {
+      if (13 === value.tag) {
+        var current$$1 = value.alternate;
+        if (
+          null !== current$$1 &&
+          ((current$$1 = current$$1.memoizedState), null !== current$$1)
+        ) {
+          startTimeMs = 10 * (1073741822 - current$$1.timedOutAt);
+          break;
+        }
+        current$$1 = value.pendingProps.maxDuration;
+        if ("number" === typeof current$$1)
+          if (0 >= current$$1) earliestTimeoutMs = 0;
+          else if (-1 === earliestTimeoutMs || current$$1 < earliestTimeoutMs)
+            earliestTimeoutMs = current$$1;
+      }
+      value = value.return;
+    } while (null !== value);
+    value = returnFiber;
+    do {
+      if ((current$$1 = 13 === value.tag))
+        current$$1 =
+          void 0 === value.memoizedProps.fallback
+            ? !1
+            : null === value.memoizedState;
+      if (current$$1) {
+        returnFiber = retrySuspendedRoot.bind(
+          null,
+          root,
+          value,
+          sourceFiber,
+          0 === (value.mode & 1) ? 1073741823 : renderExpirationTime
+        );
+        returnFiber = tracing.unstable_wrap(returnFiber);
+        thenable.then(returnFiber, returnFiber);
+        if (0 === (value.mode & 1)) {
+          value.effectTag |= 64;
+          sourceFiber.effectTag &= -1957;
+          1 === sourceFiber.tag &&
+            null === sourceFiber.alternate &&
+            (sourceFiber.tag = 17);
+          sourceFiber.expirationTime = renderExpirationTime;
+          return;
+        }
+        -1 === earliestTimeoutMs
+          ? (root = 1073741823)
+          : (-1 === startTimeMs &&
+              (startTimeMs =
+                10 *
+                  (1073741822 -
+                    findEarliestOutstandingPriorityLevel(
+                      root,
+                      renderExpirationTime
+                    )) -
+                5e3),
+            (root = startTimeMs + earliestTimeoutMs));
+        0 <= root &&
+          nextLatestAbsoluteTimeoutMs < root &&
+          (nextLatestAbsoluteTimeoutMs = root);
+        value.effectTag |= 2048;
+        value.expirationTime = renderExpirationTime;
+        return;
+      }
+      value = value.return;
+    } while (null !== value);
+    value = Error(
+      (getComponentName(sourceFiber.type) || "A React component") +
+        " suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." +
+        getStackByFiberInDevAndProd(sourceFiber)
+    );
+  }
   nextRenderDidError = !0;
   value = createCapturedValue(value, sourceFiber);
   root = returnFiber;
   do {
     switch (root.tag) {
-      case 5:
-        root.effectTag |= 1024;
+      case 3:
+        sourceFiber = value;
+        root.effectTag |= 2048;
         root.expirationTime = renderExpirationTime;
         renderExpirationTime = createRootErrorUpdate(
           root,
-          value,
+          sourceFiber,
           renderExpirationTime
         );
         enqueueCapturedUpdate(root, renderExpirationTime);
         return;
-      case 2:
-      case 3:
+      case 1:
         if (
-          ((returnFiber = value),
-          (sourceFiber = root.stateNode),
+          ((sourceFiber = value),
+          (returnFiber = root.type),
+          (thenable = root.stateNode),
           0 === (root.effectTag & 64) &&
-            null !== sourceFiber &&
-            "function" === typeof sourceFiber.componentDidCatch &&
-            (null === legacyErrorBoundariesThatAlreadyFailed ||
-              !legacyErrorBoundariesThatAlreadyFailed.has(sourceFiber)))
+            ("function" === typeof returnFiber.getDerivedStateFromError ||
+              (null !== thenable &&
+                "function" === typeof thenable.componentDidCatch &&
+                (null === legacyErrorBoundariesThatAlreadyFailed ||
+                  !legacyErrorBoundariesThatAlreadyFailed.has(thenable)))))
         ) {
-          root.effectTag |= 1024;
+          root.effectTag |= 2048;
           root.expirationTime = renderExpirationTime;
           renderExpirationTime = createClassErrorUpdate(
             root,
-            returnFiber,
+            sourceFiber,
             renderExpirationTime
           );
           enqueueCapturedUpdate(root, renderExpirationTime);
@@ -4459,24 +4980,14 @@ function throwException(
 }
 function unwindWork(workInProgress) {
   switch (workInProgress.tag) {
-    case 2:
+    case 1:
       isContextProvider(workInProgress.type) && popContext(workInProgress);
       var effectTag = workInProgress.effectTag;
-      return effectTag & 1024
-        ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+      return effectTag & 2048
+        ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
           workInProgress)
         : null;
     case 3:
-      return (
-        isContextProvider(workInProgress.type._reactResult) &&
-          popContext(workInProgress),
-        (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
-            workInProgress)
-          : null
-      );
-    case 5:
       return (
         popHostContainer(workInProgress),
         popTopLevelContextObject(workInProgress),
@@ -4485,43 +4996,45 @@ function unwindWork(workInProgress) {
           0 === (effectTag & 64),
           "The root failed to unmount after an error. This is likely a bug in React. Please file an issue."
         ),
-        (workInProgress.effectTag = (effectTag & -1025) | 64),
+        (workInProgress.effectTag = (effectTag & -2049) | 64),
         workInProgress
       );
-    case 7:
+    case 5:
       return popHostContext(workInProgress), null;
-    case 16:
+    case 13:
       return (
         (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+        effectTag & 2048
+          ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
             workInProgress)
           : null
       );
-    case 6:
+    case 4:
       return popHostContainer(workInProgress), null;
-    case 12:
+    case 10:
       return popProvider(workInProgress), null;
     default:
       return null;
   }
 }
-var Dispatcher = { readContext: readContext },
+var DispatcherWithoutHooks = { readContext: readContext },
   ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner;
 invariant(
-  null != tracking.__interactionsRef &&
-    null != tracking.__interactionsRef.current,
-  "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `schedule/tracking` module with `schedule/tracking-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling"
+  null != tracing.__interactionsRef &&
+    null != tracing.__interactionsRef.current,
+  "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling"
 );
 var isWorking = !1,
   nextUnitOfWork = null,
   nextRoot = null,
   nextRenderExpirationTime = 0,
+  nextLatestAbsoluteTimeoutMs = -1,
   nextRenderDidError = !1,
   nextEffect = null,
   isCommitting$1 = !1,
-  legacyErrorBoundariesThatAlreadyFailed = null,
-  suspenseDidTimeout = !1;
+  passiveEffectCallbackHandle = null,
+  passiveEffectCallback = null,
+  legacyErrorBoundariesThatAlreadyFailed = null;
 function resetStack() {
   if (null !== nextUnitOfWork)
     for (
@@ -4531,7 +5044,7 @@ function resetStack() {
     ) {
       var interruptedWork$jscomp$0 = interruptedWork;
       switch (interruptedWork$jscomp$0.tag) {
-        case 2:
+        case 1:
           var childContextTypes =
             interruptedWork$jscomp$0.type.childContextTypes;
           null !== childContextTypes &&
@@ -4539,29 +5052,23 @@ function resetStack() {
             popContext(interruptedWork$jscomp$0);
           break;
         case 3:
-          childContextTypes =
-            interruptedWork$jscomp$0.type._reactResult.childContextTypes;
-          null !== childContextTypes &&
-            void 0 !== childContextTypes &&
-            popContext(interruptedWork$jscomp$0);
-          break;
-        case 5:
           popHostContainer(interruptedWork$jscomp$0);
           popTopLevelContextObject(interruptedWork$jscomp$0);
           break;
-        case 7:
+        case 5:
           popHostContext(interruptedWork$jscomp$0);
           break;
-        case 6:
+        case 4:
           popHostContainer(interruptedWork$jscomp$0);
           break;
-        case 12:
+        case 10:
           popProvider(interruptedWork$jscomp$0);
       }
       interruptedWork = interruptedWork.return;
     }
   nextRoot = null;
   nextRenderExpirationTime = 0;
+  nextLatestAbsoluteTimeoutMs = -1;
   nextRenderDidError = !1;
   nextUnitOfWork = null;
 }
@@ -4595,23 +5102,46 @@ function commitAllHostEffects() {
           "function" === typeof onCommitFiberUnmount &&
             onCommitFiberUnmount(current$$1$jscomp$0);
           switch (current$$1$jscomp$0.tag) {
-            case 2:
-            case 3:
+            case 0:
+            case 11:
+            case 14:
+            case 15:
+              var updateQueue = current$$1$jscomp$0.updateQueue;
+              if (
+                null !== updateQueue &&
+                ((updateQueue = updateQueue.lastEffect), null !== updateQueue)
+              ) {
+                var effect = (updateQueue = updateQueue.next);
+                do {
+                  var destroy = effect.destroy;
+                  if (null !== destroy) {
+                    var current$$1$jscomp$1 = current$$1$jscomp$0;
+                    try {
+                      destroy();
+                    } catch (error) {
+                      captureCommitPhaseError(current$$1$jscomp$1, error);
+                    }
+                  }
+                  effect = effect.next;
+                } while (effect !== updateQueue);
+              }
+              break;
+            case 1:
               safelyDetachRef(current$$1$jscomp$0);
-              var instance = current$$1$jscomp$0.stateNode;
-              if ("function" === typeof instance.componentWillUnmount)
+              updateQueue = current$$1$jscomp$0.stateNode;
+              if ("function" === typeof updateQueue.componentWillUnmount)
                 try {
-                  (instance.props = current$$1$jscomp$0.memoizedProps),
-                    (instance.state = current$$1$jscomp$0.memoizedState),
-                    instance.componentWillUnmount();
+                  (updateQueue.props = current$$1$jscomp$0.memoizedProps),
+                    (updateQueue.state = current$$1$jscomp$0.memoizedState),
+                    updateQueue.componentWillUnmount();
                 } catch (unmountError) {
                   captureCommitPhaseError(current$$1$jscomp$0, unmountError);
                 }
               break;
-            case 7:
+            case 5:
               safelyDetachRef(current$$1$jscomp$0);
               break;
-            case 6:
+            case 4:
               FabricUIManager.createChildSet(
                 current$$1$jscomp$0.stateNode.containerInfo
               );
@@ -4630,39 +5160,48 @@ function commitAllHostEffects() {
         }
         effectTag.return = null;
         effectTag.child = null;
-        effectTag.alternate &&
-          ((effectTag.alternate.child = null),
-          (effectTag.alternate.return = null));
+        effectTag.memoizedState = null;
+        effectTag.updateQueue = null;
+        effectTag = effectTag.alternate;
+        null !== effectTag &&
+          ((effectTag.return = null),
+          (effectTag.child = null),
+          (effectTag.memoizedState = null),
+          (effectTag.updateQueue = null));
     }
     nextEffect = nextEffect.nextEffect;
   }
 }
 function commitBeforeMutationLifecycles() {
   for (; null !== nextEffect; ) {
-    if (nextEffect.effectTag & 256) {
-      var current$$1 = nextEffect.alternate;
+    if (nextEffect.effectTag & 256)
       a: {
-        var finishedWork = nextEffect;
+        var current$$1 = nextEffect.alternate,
+          finishedWork = nextEffect;
         switch (finishedWork.tag) {
-          case 2:
-          case 3:
+          case 0:
+          case 11:
+          case 15:
+            break a;
+          case 1:
             if (finishedWork.effectTag & 256 && null !== current$$1) {
               var prevProps = current$$1.memoizedProps,
                 prevState = current$$1.memoizedState;
               current$$1 = finishedWork.stateNode;
-              current$$1.props = finishedWork.memoizedProps;
-              current$$1.state = finishedWork.memoizedState;
               finishedWork = current$$1.getSnapshotBeforeUpdate(
-                prevProps,
+                finishedWork.elementType === finishedWork.type
+                  ? prevProps
+                  : resolveDefaultProps(finishedWork.type, prevProps),
                 prevState
               );
               current$$1.__reactInternalSnapshotBeforeUpdate = finishedWork;
             }
             break a;
+          case 3:
           case 5:
-          case 7:
-          case 8:
           case 6:
+          case 4:
+          case 17:
             break a;
           default:
             invariant(
@@ -4671,7 +5210,6 @@ function commitBeforeMutationLifecycles() {
             );
         }
       }
-    }
     nextEffect = nextEffect.nextEffect;
   }
 }
@@ -4687,47 +5225,47 @@ function commitAllLifeCycles(
         finishedWork = nextEffect,
         committedExpirationTime = committedExpirationTime$jscomp$0;
       switch (finishedWork.tag) {
-        case 2:
-        case 3:
+        case 0:
+        case 11:
+        case 15:
+          break;
+        case 1:
           finishedRoot = finishedWork.stateNode;
           if (finishedWork.effectTag & 4)
-            if (null === current$$1)
-              (finishedRoot.props = finishedWork.memoizedProps),
-                (finishedRoot.state = finishedWork.memoizedState),
-                finishedRoot.componentDidMount();
+            if (null === current$$1) finishedRoot.componentDidMount();
             else {
-              var prevProps = current$$1.memoizedProps;
-              current$$1 = current$$1.memoizedState;
-              finishedRoot.props = finishedWork.memoizedProps;
-              finishedRoot.state = finishedWork.memoizedState;
+              var prevProps =
+                finishedWork.elementType === finishedWork.type
+                  ? current$$1.memoizedProps
+                  : resolveDefaultProps(
+                      finishedWork.type,
+                      current$$1.memoizedProps
+                    );
               finishedRoot.componentDidUpdate(
                 prevProps,
-                current$$1,
+                current$$1.memoizedState,
                 finishedRoot.__reactInternalSnapshotBeforeUpdate
               );
             }
           current$$1 = finishedWork.updateQueue;
           null !== current$$1 &&
-            ((finishedRoot.props = finishedWork.memoizedProps),
-            (finishedRoot.state = finishedWork.memoizedState),
             commitUpdateQueue(
               finishedWork,
               current$$1,
               finishedRoot,
               committedExpirationTime
-            ));
+            );
           break;
-        case 5:
+        case 3:
           current$$1 = finishedWork.updateQueue;
           if (null !== current$$1) {
             finishedRoot = null;
             if (null !== finishedWork.child)
               switch (finishedWork.child.tag) {
-                case 7:
+                case 5:
                   finishedRoot = finishedWork.child.stateNode.canonical;
                   break;
-                case 2:
-                case 3:
+                case 1:
                   finishedRoot = finishedWork.child.stateNode;
               }
             commitUpdateQueue(
@@ -4738,7 +5276,7 @@ function commitAllLifeCycles(
             );
           }
           break;
-        case 7:
+        case 5:
           null === current$$1 &&
             finishedWork.effectTag & 4 &&
             invariant(
@@ -4746,11 +5284,11 @@ function commitAllLifeCycles(
               "The current renderer does not support mutation. This error is likely caused by a bug in React. Please file an issue."
             );
           break;
-        case 8:
-          break;
         case 6:
           break;
-        case 15:
+        case 4:
+          break;
+        case 12:
           committedExpirationTime = finishedWork.memoizedProps.onRender;
           committedExpirationTime(
             finishedWork.memoizedProps.id,
@@ -4762,7 +5300,9 @@ function commitAllLifeCycles(
             finishedRoot.memoizedInteractions
           );
           break;
-        case 16:
+        case 13:
+          break;
+        case 17:
           break;
         default:
           invariant(
@@ -4774,18 +5314,21 @@ function commitAllLifeCycles(
     if (effectTag & 128 && ((effectTag = nextEffect.ref), null !== effectTag)) {
       finishedWork = nextEffect.stateNode;
       switch (nextEffect.tag) {
-        case 7:
+        case 5:
           finishedWork = finishedWork.canonical;
       }
       "function" === typeof effectTag
         ? effectTag(finishedWork)
         : (effectTag.current = finishedWork);
     }
-    effectTag = nextEffect.nextEffect;
-    nextEffect.nextEffect = null;
-    nextEffect = effectTag;
+    nextEffect = nextEffect.nextEffect;
   }
 }
+function flushPassiveEffects() {
+  null !== passiveEffectCallback &&
+    (scheduler.unstable_cancelCallback(passiveEffectCallbackHandle),
+    passiveEffectCallback());
+}
 function commitRoot(root, finishedWork) {
   isCommitting$1 = isWorking = !0;
   invariant(
@@ -4802,27 +5345,13 @@ function commitRoot(root, finishedWork) {
     childExpirationTimeBeforeCommit = finishedWork.childExpirationTime;
   markCommittedPriorityLevels(
     root,
-    0 === updateExpirationTimeBeforeCommit ||
-    (0 !== childExpirationTimeBeforeCommit &&
-      childExpirationTimeBeforeCommit < updateExpirationTimeBeforeCommit)
+    childExpirationTimeBeforeCommit > updateExpirationTimeBeforeCommit
       ? childExpirationTimeBeforeCommit
       : updateExpirationTimeBeforeCommit
   );
   updateExpirationTimeBeforeCommit = null;
-  var committedInteractions = [];
-  updateExpirationTimeBeforeCommit = tracking.__interactionsRef.current;
-  tracking.__interactionsRef.current = root.memoizedInteractions;
-  root.pendingInteractionMap.forEach(function(
-    scheduledInteractions,
-    scheduledExpirationTime
-  ) {
-    scheduledExpirationTime <= committedExpirationTime &&
-      (committedInteractions.push.apply(
-        committedInteractions,
-        Array.from(scheduledInteractions)
-      ),
-      root.pendingInteractionMap.delete(scheduledExpirationTime));
-  });
+  updateExpirationTimeBeforeCommit = tracing.__interactionsRef.current;
+  tracing.__interactionsRef.current = root.memoizedInteractions;
   ReactCurrentOwner$2.current = null;
   childExpirationTimeBeforeCommit = void 0;
   1 < finishedWork.effectTag
@@ -4886,18 +5415,18 @@ function commitRoot(root, finishedWork) {
     onCommitFiberRoot(finishedWork.stateNode);
   childExpirationTimeBeforeCommit = finishedWork.expirationTime;
   finishedWork = finishedWork.childExpirationTime;
-  finishedWork =
-    0 === childExpirationTimeBeforeCommit ||
-    (0 !== finishedWork && finishedWork < childExpirationTimeBeforeCommit)
+  var earliestRemainingTimeAfterCommit =
+    finishedWork > childExpirationTimeBeforeCommit
       ? finishedWork
       : childExpirationTimeBeforeCommit;
-  0 === finishedWork && (legacyErrorBoundariesThatAlreadyFailed = null);
-  onCommit(root, finishedWork);
-  tracking.__interactionsRef.current = updateExpirationTimeBeforeCommit;
+  0 === earliestRemainingTimeAfterCommit &&
+    (legacyErrorBoundariesThatAlreadyFailed = null);
+  onCommit(root, earliestRemainingTimeAfterCommit);
+  tracing.__interactionsRef.current = updateExpirationTimeBeforeCommit;
   var subscriber = void 0;
   try {
     if (
-      ((subscriber = tracking.__subscriberRef.current),
+      ((subscriber = tracing.__subscriberRef.current),
       null !== subscriber && 0 < root.memoizedInteractions.size)
     )
       subscriber.onWorkStopped(
@@ -4907,17 +5436,24 @@ function commitRoot(root, finishedWork) {
   } catch (error) {
     hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
   } finally {
-    suspenseDidTimeout ||
-      committedInteractions.forEach(function(interaction) {
-        interaction.__count--;
-        if (null !== subscriber && 0 === interaction.__count)
-          try {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          } catch (error) {
-            hasUnhandledError ||
-              ((hasUnhandledError = !0), (unhandledError = error));
-          }
-      });
+    var pendingInteractionMap = root.pendingInteractionMap;
+    pendingInteractionMap.forEach(function(
+      scheduledInteractions,
+      scheduledExpirationTime
+    ) {
+      scheduledExpirationTime > earliestRemainingTimeAfterCommit &&
+        (pendingInteractionMap.delete(scheduledExpirationTime),
+        scheduledInteractions.forEach(function(interaction) {
+          interaction.__count--;
+          if (null !== subscriber && 0 === interaction.__count)
+            try {
+              subscriber.onInteractionScheduledWorkCompleted(interaction);
+            } catch (error) {
+              hasUnhandledError ||
+                ((hasUnhandledError = !0), (unhandledError = error));
+            }
+        }));
+    });
   }
 }
 function completeUnitOfWork(workInProgress) {
@@ -4925,205 +5461,210 @@ function completeUnitOfWork(workInProgress) {
     var current$$1 = workInProgress.alternate,
       returnFiber = workInProgress.return,
       siblingFiber = workInProgress.sibling;
-    if (0 === (workInProgress.effectTag & 512)) {
+    if (0 === (workInProgress.effectTag & 1024)) {
+      nextUnitOfWork = workInProgress;
       if (workInProgress.mode & 4) {
         var fiber = workInProgress;
         profilerStartTime = now$1();
         0 > fiber.actualStartTime && (fiber.actualStartTime = now$1());
       }
-      var current = current$$1;
-      current$$1 = workInProgress;
-      fiber = current$$1.pendingProps;
-      switch (current$$1.tag) {
-        case 0:
-        case 1:
-          break;
-        case 2:
-          isContextProvider(current$$1.type) && popContext(current$$1);
-          break;
-        case 3:
-          isContextProvider(current$$1.type._reactResult) &&
-            popContext(current$$1);
-          break;
-        case 5:
-          popHostContainer(current$$1);
-          popTopLevelContextObject(current$$1);
-          fiber = current$$1.stateNode;
-          fiber.pendingContext &&
-            ((fiber.context = fiber.pendingContext),
-            (fiber.pendingContext = null));
-          if (null === current || null === current.child)
-            current$$1.effectTag &= -3;
-          updateHostContainer(current$$1);
-          break;
-        case 7:
-          popHostContext(current$$1);
-          var rootContainerInstance = requiredContext(
+      a: {
+        var current = current$$1;
+        current$$1 = workInProgress;
+        var renderExpirationTime = nextRenderExpirationTime;
+        fiber = current$$1.pendingProps;
+        switch (current$$1.tag) {
+          case 2:
+            break;
+          case 16:
+            break;
+          case 15:
+          case 0:
+            break;
+          case 1:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          case 3:
+            popHostContainer(current$$1);
+            popTopLevelContextObject(current$$1);
+            fiber = current$$1.stateNode;
+            fiber.pendingContext &&
+              ((fiber.context = fiber.pendingContext),
+              (fiber.pendingContext = null));
+            if (null === current || null === current.child)
+              current$$1.effectTag &= -3;
+            updateHostContainer(current$$1);
+            break;
+          case 5:
+            popHostContext(current$$1);
+            renderExpirationTime = requiredContext(
               rootInstanceStackCursor.current
-            ),
-            type = current$$1.type;
-          if (null !== current && null != current$$1.stateNode)
-            updateHostComponent$1(
-              current,
-              current$$1,
-              type,
-              fiber,
-              rootContainerInstance
-            ),
-              current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
-          else if (fiber) {
-            var currentHostContext = requiredContext(
-                contextStackCursor$1.current
-              ),
-              internalInstanceHandle = current$$1;
-            current = nextReactTag;
-            nextReactTag += 2;
-            var viewConfig = ReactNativeViewConfigRegistry.get(type);
-            invariant(
-              "RCTView" !== type || !currentHostContext.isInAParentText,
-              "Nesting of <View> within <Text> is not currently supported."
-            );
-            type = diffProperties(
-              null,
-              emptyObject,
-              fiber,
-              viewConfig.validAttributes
-            );
-            rootContainerInstance = FabricUIManager.createNode(
-              current,
-              viewConfig.uiViewClassName,
-              rootContainerInstance,
-              type,
-              internalInstanceHandle
-            );
-            fiber = new ReactFabricHostComponent(current, viewConfig, fiber);
-            fiber = { node: rootContainerInstance, canonical: fiber };
-            appendAllChildren(fiber, current$$1);
-            current$$1.stateNode = fiber;
-            null !== current$$1.ref && (current$$1.effectTag |= 128);
-          } else
-            invariant(
-              null !== current$$1.stateNode,
-              "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
             );
-          break;
-        case 8:
-          current && null != current$$1.stateNode
-            ? updateHostText$1(
+            var type = current$$1.type;
+            if (null !== current && null != current$$1.stateNode)
+              updateHostComponent$1(
                 current,
                 current$$1,
-                current.memoizedProps,
-                fiber
-              )
-            : ("string" !== typeof fiber &&
-                invariant(
-                  null !== current$$1.stateNode,
-                  "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                type,
+                fiber,
+                renderExpirationTime
+              ),
+                current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
+            else if (fiber) {
+              var currentHostContext = requiredContext(
+                  contextStackCursor$1.current
                 ),
-              (rootContainerInstance = requiredContext(
-                rootInstanceStackCursor.current
-              )),
-              (current = requiredContext(contextStackCursor$1.current)),
-              (current$$1.stateNode = createTextInstance(
+                internalInstanceHandle = current$$1;
+              current = nextReactTag;
+              nextReactTag += 2;
+              var viewConfig = ReactNativeViewConfigRegistry.get(type);
+              invariant(
+                "RCTView" !== type || !currentHostContext.isInAParentText,
+                "Nesting of <View> within <Text> is not currently supported."
+              );
+              type = diffProperties(
+                null,
+                emptyObject,
                 fiber,
-                rootContainerInstance,
+                viewConfig.validAttributes
+              );
+              renderExpirationTime = FabricUIManager.createNode(
                 current,
-                current$$1
-              )));
-          break;
-        case 13:
-        case 14:
-          break;
-        case 16:
-          break;
-        case 9:
-          break;
-        case 10:
-          break;
-        case 15:
-          break;
-        case 6:
-          popHostContainer(current$$1);
-          updateHostContainer(current$$1);
-          break;
-        case 12:
-          popProvider(current$$1);
-          break;
-        case 11:
-          break;
-        case 4:
-          invariant(
-            !1,
-            "An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue."
-          );
-        default:
-          invariant(
-            !1,
-            "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
-          );
+                viewConfig.uiViewClassName,
+                renderExpirationTime,
+                type,
+                internalInstanceHandle
+              );
+              fiber = new ReactFabricHostComponent(current, viewConfig, fiber);
+              fiber = { node: renderExpirationTime, canonical: fiber };
+              appendAllChildren(fiber, current$$1, !1, !1);
+              current$$1.stateNode = fiber;
+              null !== current$$1.ref && (current$$1.effectTag |= 128);
+            } else
+              invariant(
+                null !== current$$1.stateNode,
+                "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+              );
+            break;
+          case 6:
+            current && null != current$$1.stateNode
+              ? updateHostText$1(
+                  current,
+                  current$$1,
+                  current.memoizedProps,
+                  fiber
+                )
+              : ("string" !== typeof fiber &&
+                  invariant(
+                    null !== current$$1.stateNode,
+                    "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  ),
+                (current = requiredContext(rootInstanceStackCursor.current)),
+                (renderExpirationTime = requiredContext(
+                  contextStackCursor$1.current
+                )),
+                (current$$1.stateNode = createTextInstance(
+                  fiber,
+                  current,
+                  renderExpirationTime,
+                  current$$1
+                )));
+            break;
+          case 11:
+            break;
+          case 13:
+            fiber = current$$1.memoizedState;
+            if (0 !== (current$$1.effectTag & 64)) {
+              current$$1.expirationTime = renderExpirationTime;
+              nextUnitOfWork = current$$1;
+              break a;
+            }
+            fiber = null !== fiber;
+            renderExpirationTime =
+              null !== current && null !== current.memoizedState;
+            null !== current &&
+              !fiber &&
+              renderExpirationTime &&
+              ((current = current.child.sibling),
+              null !== current &&
+                ((viewConfig = current$$1.firstEffect),
+                null !== viewConfig
+                  ? ((current$$1.firstEffect = current),
+                    (current.nextEffect = viewConfig))
+                  : ((current$$1.firstEffect = current$$1.lastEffect = current),
+                    (current.nextEffect = null)),
+                (current.effectTag = 8)));
+            if (
+              fiber !== renderExpirationTime ||
+              (0 === (current$$1.effectTag & 1) && fiber)
+            )
+              current$$1.effectTag |= 4;
+            break;
+          case 7:
+            break;
+          case 8:
+            break;
+          case 12:
+            break;
+          case 4:
+            popHostContainer(current$$1);
+            updateHostContainer(current$$1);
+            break;
+          case 10:
+            popProvider(current$$1);
+            break;
+          case 9:
+            break;
+          case 14:
+            break;
+          case 17:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          default:
+            invariant(
+              !1,
+              "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
+            );
+        }
+        nextUnitOfWork = null;
       }
-      nextUnitOfWork = null;
       workInProgress.mode & 4 &&
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !1);
-      current$$1 = nextUnitOfWork;
-      fiber = workInProgress;
+      current$$1 = workInProgress;
       if (
-        1073741823 === nextRenderExpirationTime ||
-        1073741823 !== fiber.childExpirationTime
+        1 === nextRenderExpirationTime ||
+        1 !== current$$1.childExpirationTime
       ) {
-        rootContainerInstance = 0;
-        if (fiber.mode & 4) {
-          current = fiber.actualDuration;
-          viewConfig = fiber.selfBaseDuration;
-          type =
-            null === fiber.alternate || fiber.child !== fiber.alternate.child;
-          for (
-            internalInstanceHandle = fiber.child;
-            null !== internalInstanceHandle;
-
-          ) {
-            currentHostContext = internalInstanceHandle.expirationTime;
-            var childChildExpirationTime =
-              internalInstanceHandle.childExpirationTime;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== currentHostContext &&
-                currentHostContext < rootContainerInstance)
-            )
-              rootContainerInstance = currentHostContext;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== childChildExpirationTime &&
-                childChildExpirationTime < rootContainerInstance)
-            )
-              rootContainerInstance = childChildExpirationTime;
-            type && (current += internalInstanceHandle.actualDuration);
-            viewConfig += internalInstanceHandle.treeBaseDuration;
-            internalInstanceHandle = internalInstanceHandle.sibling;
-          }
-          fiber.actualDuration = current;
-          fiber.treeBaseDuration = viewConfig;
+        fiber = 0;
+        if (current$$1.mode & 4) {
+          current = current$$1.actualDuration;
+          renderExpirationTime = current$$1.selfBaseDuration;
+          viewConfig =
+            null === current$$1.alternate ||
+            current$$1.child !== current$$1.alternate.child;
+          for (type = current$$1.child; null !== type; )
+            (internalInstanceHandle = type.expirationTime),
+              (currentHostContext = type.childExpirationTime),
+              internalInstanceHandle > fiber &&
+                (fiber = internalInstanceHandle),
+              currentHostContext > fiber && (fiber = currentHostContext),
+              viewConfig && (current += type.actualDuration),
+              (renderExpirationTime += type.treeBaseDuration),
+              (type = type.sibling);
+          current$$1.actualDuration = current;
+          current$$1.treeBaseDuration = renderExpirationTime;
         } else
-          for (current = fiber.child; null !== current; ) {
-            viewConfig = current.expirationTime;
-            type = current.childExpirationTime;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== viewConfig && viewConfig < rootContainerInstance)
-            )
-              rootContainerInstance = viewConfig;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== type && type < rootContainerInstance)
-            )
-              rootContainerInstance = type;
-            current = current.sibling;
-          }
-        fiber.childExpirationTime = rootContainerInstance;
+          for (current = current$$1.child; null !== current; )
+            (renderExpirationTime = current.expirationTime),
+              (viewConfig = current.childExpirationTime),
+              renderExpirationTime > fiber && (fiber = renderExpirationTime),
+              viewConfig > fiber && (fiber = viewConfig),
+              (current = current.sibling);
+        current$$1.childExpirationTime = fiber;
       }
-      if (null !== current$$1) return current$$1;
+      if (null !== nextUnitOfWork) return nextUnitOfWork;
       null !== returnFiber &&
-        0 === (returnFiber.effectTag & 512) &&
+        0 === (returnFiber.effectTag & 1024) &&
         (null === returnFiber.firstEffect &&
           (returnFiber.firstEffect = workInProgress.firstEffect),
         null !== workInProgress.lastEffect &&
@@ -5136,23 +5677,19 @@ function completeUnitOfWork(workInProgress) {
             : (returnFiber.firstEffect = workInProgress),
           (returnFiber.lastEffect = workInProgress)));
     } else {
-      workInProgress.mode & 4 &&
+      if (workInProgress.mode & 4) {
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !1);
-      workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
-      if (null !== workInProgress) {
-        if (workInProgress.mode & 4) {
-          returnFiber = workInProgress.actualDuration;
-          for (siblingFiber = workInProgress.child; null !== siblingFiber; )
-            (returnFiber += siblingFiber.actualDuration),
-              (siblingFiber = siblingFiber.sibling);
-          workInProgress.actualDuration = returnFiber;
-        }
-        workInProgress.effectTag &= 511;
-        return workInProgress;
+        current$$1 = workInProgress.actualDuration;
+        for (fiber = workInProgress.child; null !== fiber; )
+          (current$$1 += fiber.actualDuration), (fiber = fiber.sibling);
+        workInProgress.actualDuration = current$$1;
       }
+      workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
+      if (null !== workInProgress)
+        return (workInProgress.effectTag &= 1023), workInProgress;
       null !== returnFiber &&
         ((returnFiber.firstEffect = returnFiber.lastEffect = null),
-        (returnFiber.effectTag |= 512));
+        (returnFiber.effectTag |= 1024));
     }
     if (null !== siblingFiber) return siblingFiber;
     if (null !== returnFiber) workInProgress = returnFiber;
@@ -5167,23 +5704,22 @@ function performUnitOfWork(workInProgress) {
     0 > workInProgress.actualStartTime &&
       (workInProgress.actualStartTime = now$1()));
   current$$1 = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+  workInProgress.memoizedProps = workInProgress.pendingProps;
   workInProgress.mode & 4 &&
     stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !0);
   null === current$$1 && (current$$1 = completeUnitOfWork(workInProgress));
   ReactCurrentOwner$2.current = null;
   return current$$1;
 }
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
+  flushPassiveEffects();
   isWorking = !0;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
-  var expirationTime = root.nextExpirationTimeToWorkOn,
-    prevInteractions = null;
-  prevInteractions = tracking.__interactionsRef.current;
-  tracking.__interactionsRef.current = root.memoizedInteractions;
+  ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
+  var expirationTime = root.nextExpirationTimeToWorkOn;
   if (
     expirationTime !== nextRenderExpirationTime ||
     root !== nextRoot ||
@@ -5203,14 +5739,14 @@ function renderRoot(root, isYieldy, isExpired) {
       scheduledInteractions,
       scheduledExpirationTime
     ) {
-      scheduledExpirationTime <= expirationTime &&
+      scheduledExpirationTime >= expirationTime &&
         scheduledInteractions.forEach(function(interaction) {
           return interactions.add(interaction);
         });
     });
     root.memoizedInteractions = interactions;
     if (0 < interactions.size) {
-      var subscriber = tracking.__subscriberRef.current;
+      var subscriber = tracing.__subscriberRef.current;
       if (null !== subscriber) {
         var threadID = 1e3 * expirationTime + root.interactionThreadID;
         try {
@@ -5222,241 +5758,243 @@ function renderRoot(root, isYieldy, isExpired) {
       }
     }
   }
-  subscriber = !1;
+  subscriber = null;
+  subscriber = tracing.__interactionsRef.current;
+  tracing.__interactionsRef.current = root.memoizedInteractions;
+  threadID = !1;
   do {
     try {
       if (isYieldy)
-        for (; null !== nextUnitOfWork && !shouldYield(); )
+        for (; null !== nextUnitOfWork && !shouldYieldToRenderer(); )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
       else
         for (; null !== nextUnitOfWork; )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     } catch (thrownValue) {
-      if (null === nextUnitOfWork)
-        (subscriber = !0), onUncaughtError(thrownValue);
+      if (
+        ((lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = null),
+        null === nextUnitOfWork)
+      )
+        (threadID = !0), onUncaughtError(thrownValue);
       else {
+        nextUnitOfWork.mode & 4 &&
+          stopProfilerTimerIfRunningAndRecordDelta(nextUnitOfWork, !0);
         invariant(
           null !== nextUnitOfWork,
           "Failed to replay rendering after an error. This is likely caused by a bug in React. Please file an issue with a reproducing case to help us find it."
         );
-        threadID = nextUnitOfWork;
-        var returnFiber = threadID.return;
-        if (null === returnFiber)
-          (subscriber = !0), onUncaughtError(thrownValue);
+        var sourceFiber = nextUnitOfWork,
+          returnFiber = sourceFiber.return;
+        if (null === returnFiber) (threadID = !0), onUncaughtError(thrownValue);
         else {
           throwException(
             root,
             returnFiber,
-            threadID,
+            sourceFiber,
             thrownValue,
             nextRenderExpirationTime
           );
-          nextUnitOfWork = completeUnitOfWork(threadID);
+          nextUnitOfWork = completeUnitOfWork(sourceFiber);
           continue;
         }
       }
     }
     break;
   } while (1);
-  tracking.__interactionsRef.current = prevInteractions;
+  tracing.__interactionsRef.current = subscriber;
   isWorking = !1;
   lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = ReactCurrentOwner$2.currentDispatcher = null;
-  if (subscriber) (nextRoot = null), (root.finishedWork = null);
+  if (threadID) (nextRoot = null), (root.finishedWork = null);
   else if (null !== nextUnitOfWork) root.finishedWork = null;
   else {
-    isYieldy = root.current.alternate;
+    subscriber = root.current.alternate;
     invariant(
-      null !== isYieldy,
+      null !== subscriber,
       "Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."
     );
     nextRoot = null;
     if (nextRenderDidError) {
       if (hasLowerPriorityWork(root, expirationTime)) {
         markSuspendedPriorityLevel(root, expirationTime);
-        onSuspend(root, isYieldy, expirationTime, root.expirationTime, -1);
+        onSuspend(root, subscriber, expirationTime, root.expirationTime, -1);
         return;
       }
-      if (!root.didError && !isExpired) {
+      if (!root.didError && isYieldy) {
         root.didError = !0;
-        isExpired = root.nextExpirationTimeToWorkOn = expirationTime;
-        prevInteractions = root.expirationTime = 1;
-        onSuspend(root, isYieldy, isExpired, prevInteractions, -1);
+        isYieldy = root.nextExpirationTimeToWorkOn = expirationTime;
+        threadID = root.expirationTime = 1073741823;
+        onSuspend(root, subscriber, isYieldy, threadID, -1);
         return;
       }
     }
-    onComplete(root, isYieldy, expirationTime);
+    isYieldy && -1 !== nextLatestAbsoluteTimeoutMs
+      ? (markSuspendedPriorityLevel(root, expirationTime),
+        (isYieldy =
+          10 *
+          (1073741822 -
+            findEarliestOutstandingPriorityLevel(root, expirationTime))),
+        isYieldy < nextLatestAbsoluteTimeoutMs &&
+          (nextLatestAbsoluteTimeoutMs = isYieldy),
+        (isYieldy = 10 * (1073741822 - requestCurrentTime())),
+        (isYieldy = nextLatestAbsoluteTimeoutMs - isYieldy),
+        onSuspend(
+          root,
+          subscriber,
+          expirationTime,
+          root.expirationTime,
+          0 > isYieldy ? 0 : isYieldy
+        ))
+      : onComplete(root, subscriber, expirationTime);
   }
 }
-function captureCommitPhaseError(fiber, error) {
-  var JSCompiler_inline_result;
-  a: {
-    invariant(
-      !isWorking || isCommitting$1,
-      "dispatch: Cannot dispatch during the render phase."
-    );
-    for (
-      JSCompiler_inline_result = fiber.return;
-      null !== JSCompiler_inline_result;
-
-    ) {
-      switch (JSCompiler_inline_result.tag) {
-        case 2:
-        case 3:
-          var instance = JSCompiler_inline_result.stateNode;
-          if (
-            "function" ===
-              typeof JSCompiler_inline_result.type.getDerivedStateFromCatch ||
-            ("function" === typeof instance.componentDidCatch &&
-              (null === legacyErrorBoundariesThatAlreadyFailed ||
-                !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
-          ) {
-            fiber = createCapturedValue(error, fiber);
-            fiber = createClassErrorUpdate(JSCompiler_inline_result, fiber, 1);
-            enqueueUpdate(JSCompiler_inline_result, fiber);
-            scheduleWork(JSCompiler_inline_result, 1);
-            JSCompiler_inline_result = void 0;
-            break a;
-          }
-          break;
-        case 5:
-          fiber = createCapturedValue(error, fiber);
-          fiber = createRootErrorUpdate(JSCompiler_inline_result, fiber, 1);
-          enqueueUpdate(JSCompiler_inline_result, fiber);
-          scheduleWork(JSCompiler_inline_result, 1);
-          JSCompiler_inline_result = void 0;
-          break a;
-      }
-      JSCompiler_inline_result = JSCompiler_inline_result.return;
+function captureCommitPhaseError(sourceFiber, value) {
+  for (var fiber = sourceFiber.return; null !== fiber; ) {
+    switch (fiber.tag) {
+      case 1:
+        var instance = fiber.stateNode;
+        if (
+          "function" === typeof fiber.type.getDerivedStateFromError ||
+          ("function" === typeof instance.componentDidCatch &&
+            (null === legacyErrorBoundariesThatAlreadyFailed ||
+              !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
+        ) {
+          sourceFiber = createCapturedValue(value, sourceFiber);
+          sourceFiber = createClassErrorUpdate(fiber, sourceFiber, 1073741823);
+          enqueueUpdate(fiber, sourceFiber);
+          scheduleWork(fiber, 1073741823);
+          return;
+        }
+        break;
+      case 3:
+        sourceFiber = createCapturedValue(value, sourceFiber);
+        sourceFiber = createRootErrorUpdate(fiber, sourceFiber, 1073741823);
+        enqueueUpdate(fiber, sourceFiber);
+        scheduleWork(fiber, 1073741823);
+        return;
     }
-    5 === fiber.tag &&
-      ((JSCompiler_inline_result = createCapturedValue(error, fiber)),
-      (JSCompiler_inline_result = createRootErrorUpdate(
-        fiber,
-        JSCompiler_inline_result,
-        1
-      )),
-      enqueueUpdate(fiber, JSCompiler_inline_result),
-      scheduleWork(fiber, 1));
-    JSCompiler_inline_result = void 0;
+    fiber = fiber.return;
   }
-  return JSCompiler_inline_result;
+  3 === sourceFiber.tag &&
+    ((fiber = createCapturedValue(value, sourceFiber)),
+    (fiber = createRootErrorUpdate(sourceFiber, fiber, 1073741823)),
+    enqueueUpdate(sourceFiber, fiber),
+    scheduleWork(sourceFiber, 1073741823));
 }
 function computeExpirationForFiber(currentTime, fiber) {
   isWorking
-    ? (currentTime = isCommitting$1 ? 1 : nextRenderExpirationTime)
+    ? (currentTime = isCommitting$1 ? 1073741823 : nextRenderExpirationTime)
     : fiber.mode & 1
       ? ((currentTime = isBatchingInteractiveUpdates
-          ? 2 + 10 * ((((currentTime - 2 + 15) / 10) | 0) + 1)
-          : 2 + 25 * ((((currentTime - 2 + 500) / 25) | 0) + 1)),
+          ? 1073741822 - 10 * ((((1073741822 - currentTime + 15) / 10) | 0) + 1)
+          : 1073741822 -
+            25 * ((((1073741822 - currentTime + 500) / 25) | 0) + 1)),
         null !== nextRoot &&
           currentTime === nextRenderExpirationTime &&
-          (currentTime += 1))
-      : (currentTime = 1);
+          --currentTime)
+      : (currentTime = 1073741823);
   isBatchingInteractiveUpdates &&
     (0 === lowestPriorityPendingInteractiveExpirationTime ||
-      currentTime > lowestPriorityPendingInteractiveExpirationTime) &&
+      currentTime < lowestPriorityPendingInteractiveExpirationTime) &&
     (lowestPriorityPendingInteractiveExpirationTime = currentTime);
   return currentTime;
 }
-function storeInteractionsForExpirationTime(
-  root,
-  expirationTime,
-  updateInteractionCounts
-) {
-  var interactions = tracking.__interactionsRef.current;
-  if (0 < interactions.size) {
-    var pendingInteractions = root.pendingInteractionMap.get(expirationTime);
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = root.earliestSuspendedTime;
+  var latestSuspendedTime = root.latestSuspendedTime;
+  if (
+    0 !== retryTime &&
+    suspendedTime <= retryTime &&
+    suspendedTime >= latestSuspendedTime
+  ) {
+    latestSuspendedTime = retryTime = suspendedTime;
+    root.didError = !1;
+    var latestPingedTime = root.latestPingedTime;
+    if (0 === latestPingedTime || latestPingedTime > latestSuspendedTime)
+      root.latestPingedTime = latestSuspendedTime;
+    findNextExpirationTimeToWorkOn(latestSuspendedTime, root);
+  } else
+    (retryTime = requestCurrentTime()),
+      (retryTime = computeExpirationForFiber(retryTime, boundaryFiber)),
+      markPendingPriorityLevel(root, retryTime);
+  0 !== (boundaryFiber.mode & 1) &&
+    root === nextRoot &&
+    nextRenderExpirationTime === suspendedTime &&
+    (nextRoot = null);
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  0 === (boundaryFiber.mode & 1) &&
+    (scheduleWorkToRoot(sourceFiber, retryTime),
+    1 === sourceFiber.tag &&
+      null !== sourceFiber.stateNode &&
+      ((boundaryFiber = createUpdate(retryTime)),
+      (boundaryFiber.tag = 2),
+      enqueueUpdate(sourceFiber, boundaryFiber)));
+  sourceFiber = root.expirationTime;
+  0 !== sourceFiber && requestWork(root, sourceFiber);
+}
+function scheduleWorkToRoot(fiber, expirationTime) {
+  fiber.expirationTime < expirationTime &&
+    (fiber.expirationTime = expirationTime);
+  var alternate = fiber.alternate;
+  null !== alternate &&
+    alternate.expirationTime < expirationTime &&
+    (alternate.expirationTime = expirationTime);
+  var node = fiber.return,
+    root = null;
+  if (null === node && 3 === fiber.tag) root = fiber.stateNode;
+  else
+    for (; null !== node; ) {
+      alternate = node.alternate;
+      node.childExpirationTime < expirationTime &&
+        (node.childExpirationTime = expirationTime);
+      null !== alternate &&
+        alternate.childExpirationTime < expirationTime &&
+        (alternate.childExpirationTime = expirationTime);
+      if (null === node.return && 3 === node.tag) {
+        root = node.stateNode;
+        break;
+      }
+      node = node.return;
+    }
+  if (
+    null !== root &&
+    ((fiber = tracing.__interactionsRef.current), 0 < fiber.size)
+  ) {
+    alternate = root.pendingInteractionMap;
+    var pendingInteractions = alternate.get(expirationTime);
     null != pendingInteractions
-      ? interactions.forEach(function(interaction) {
-          updateInteractionCounts &&
-            !pendingInteractions.has(interaction) &&
-            interaction.__count++;
+      ? fiber.forEach(function(interaction) {
+          pendingInteractions.has(interaction) || interaction.__count++;
           pendingInteractions.add(interaction);
         })
-      : (root.pendingInteractionMap.set(expirationTime, new Set(interactions)),
-        updateInteractionCounts &&
-          interactions.forEach(function(interaction) {
-            interaction.__count++;
-          }));
-    var subscriber = tracking.__subscriberRef.current;
-    if (null !== subscriber)
-      subscriber.onWorkScheduled(
-        interactions,
+      : (alternate.set(expirationTime, new Set(fiber)),
+        fiber.forEach(function(interaction) {
+          interaction.__count++;
+        }));
+    alternate = tracing.__subscriberRef.current;
+    if (null !== alternate)
+      alternate.onWorkScheduled(
+        fiber,
         1e3 * expirationTime + root.interactionThreadID
       );
   }
+  return root;
 }
 function scheduleWork(fiber, expirationTime) {
-  a: {
-    if (0 === fiber.expirationTime || fiber.expirationTime > expirationTime)
-      fiber.expirationTime = expirationTime;
-    var alternate = fiber.alternate;
-    null !== alternate &&
-      (0 === alternate.expirationTime ||
-        alternate.expirationTime > expirationTime) &&
-      (alternate.expirationTime = expirationTime);
-    var node = fiber.return;
-    if (null === node && 5 === fiber.tag) fiber = fiber.stateNode;
-    else {
-      for (; null !== node; ) {
-        alternate = node.alternate;
-        if (
-          0 === node.childExpirationTime ||
-          node.childExpirationTime > expirationTime
-        )
-          node.childExpirationTime = expirationTime;
-        null !== alternate &&
-          (0 === alternate.childExpirationTime ||
-            alternate.childExpirationTime > expirationTime) &&
-          (alternate.childExpirationTime = expirationTime);
-        if (null === node.return && 5 === node.tag) {
-          fiber = node.stateNode;
-          break a;
-        }
-        node = node.return;
-      }
-      fiber = null;
-    }
-  }
-  if (null !== fiber) {
-    storeInteractionsForExpirationTime(fiber, expirationTime, !0);
-    !isWorking &&
+  fiber = scheduleWorkToRoot(fiber, expirationTime);
+  null !== fiber &&
+    (!isWorking &&
       0 !== nextRenderExpirationTime &&
-      expirationTime < nextRenderExpirationTime &&
-      resetStack();
-    markPendingPriorityLevel(fiber, expirationTime);
-    if (!isWorking || isCommitting$1 || nextRoot !== fiber) {
-      expirationTime = fiber;
-      fiber = fiber.expirationTime;
-      if (null === expirationTime.nextScheduledRoot)
-        (expirationTime.expirationTime = fiber),
-          null === lastScheduledRoot
-            ? ((firstScheduledRoot = lastScheduledRoot = expirationTime),
-              (expirationTime.nextScheduledRoot = expirationTime))
-            : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = expirationTime),
-              (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot));
-      else if (
-        ((alternate = expirationTime.expirationTime),
-        0 === alternate || fiber < alternate)
-      )
-        expirationTime.expirationTime = fiber;
-      isRendering ||
-        (isBatchingUpdates
-          ? isUnbatchingUpdates &&
-            ((nextFlushedRoot = expirationTime),
-            (nextFlushedExpirationTime = 1),
-            performWorkOnRoot(expirationTime, 1, !0))
-          : 1 === fiber
-            ? performWork(1, null)
-            : scheduleCallbackWithExpirationTime(expirationTime, fiber));
-    }
+      expirationTime > nextRenderExpirationTime &&
+      resetStack(),
+    markPendingPriorityLevel(fiber, expirationTime),
+    (isWorking && !isCommitting$1 && nextRoot === fiber) ||
+      requestWork(fiber, fiber.expirationTime),
     nestedUpdateCount > NESTED_UPDATE_LIMIT &&
       ((nestedUpdateCount = 0),
       invariant(
         !1,
         "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops."
-      ));
-  }
+      )));
 }
 var firstScheduledRoot = null,
   lastScheduledRoot = null,
@@ -5466,27 +6004,25 @@ var firstScheduledRoot = null,
   nextFlushedRoot = null,
   nextFlushedExpirationTime = 0,
   lowestPriorityPendingInteractiveExpirationTime = 0,
-  deadlineDidExpire = !1,
   hasUnhandledError = !1,
   unhandledError = null,
-  deadline = null,
   isBatchingUpdates = !1,
   isUnbatchingUpdates = !1,
   isBatchingInteractiveUpdates = !1,
   completedBatches = null,
   originalStartTimeMs = now$1(),
-  currentRendererTime = ((originalStartTimeMs / 10) | 0) + 2,
+  currentRendererTime = 1073741822 - ((originalStartTimeMs / 10) | 0),
   currentSchedulerTime = currentRendererTime,
   NESTED_UPDATE_LIMIT = 50,
   nestedUpdateCount = 0,
-  lastCommittedRootDuringThisBatch = null,
-  timeHeuristicForUnitOfWork = 1;
+  lastCommittedRootDuringThisBatch = null;
 function recomputeCurrentRendererTime() {
-  currentRendererTime = (((now$1() - originalStartTimeMs) / 10) | 0) + 2;
+  currentRendererTime =
+    1073741822 - (((now$1() - originalStartTimeMs) / 10) | 0);
 }
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (0 !== callbackExpirationTime) {
-    if (expirationTime > callbackExpirationTime) return;
+    if (expirationTime < callbackExpirationTime) return;
     null !== callbackID &&
       ((root = callbackID), (scheduledCallback = null), clearTimeout(root));
   }
@@ -5507,13 +6043,29 @@ function onSuspend(
   msUntilTimeout
 ) {
   root.expirationTime = rootExpirationTime;
-  0 < msUntilTimeout &&
-    (root.timeoutHandle = scheduleTimeout(
-      onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
-      msUntilTimeout
-    ));
+  0 !== msUntilTimeout || shouldYieldToRenderer()
+    ? 0 < msUntilTimeout &&
+      (root.timeoutHandle = scheduleTimeout(
+        onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
+        msUntilTimeout
+      ))
+    : ((root.pendingCommitExpirationTime = suspendedExpirationTime),
+      (root.finishedWork = finishedWork));
+}
+function onTimeout(root, finishedWork, suspendedExpirationTime) {
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  invariant(
+    !isRendering,
+    "work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method."
+  );
+  nextFlushedRoot = root;
+  nextFlushedExpirationTime = suspendedExpirationTime;
+  performWorkOnRoot(root, suspendedExpirationTime, !1);
+  performWork(1073741823, !1);
 }
-function onTimeout() {}
 function onCommit(root, expirationTime) {
   root.expirationTime = expirationTime;
   root.finishedWork = null;
@@ -5521,14 +6073,31 @@ function onCommit(root, expirationTime) {
 function requestCurrentTime() {
   if (isRendering) return currentSchedulerTime;
   findHighestPriorityRoot();
-  if (
-    0 === nextFlushedExpirationTime ||
-    1073741823 === nextFlushedExpirationTime
-  )
+  if (0 === nextFlushedExpirationTime || 1 === nextFlushedExpirationTime)
     recomputeCurrentRendererTime(),
       (currentSchedulerTime = currentRendererTime);
   return currentSchedulerTime;
 }
+function requestWork(root, expirationTime) {
+  null === root.nextScheduledRoot
+    ? ((root.expirationTime = expirationTime),
+      null === lastScheduledRoot
+        ? ((firstScheduledRoot = lastScheduledRoot = root),
+          (root.nextScheduledRoot = root))
+        : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = root),
+          (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot)))
+    : expirationTime > root.expirationTime &&
+      (root.expirationTime = expirationTime);
+  isRendering ||
+    (isBatchingUpdates
+      ? isUnbatchingUpdates &&
+        ((nextFlushedRoot = root),
+        (nextFlushedExpirationTime = 1073741823),
+        performWorkOnRoot(root, 1073741823, !1))
+      : 1073741823 === expirationTime
+        ? performWork(1073741823, !1)
+        : scheduleCallbackWithExpirationTime(root, expirationTime));
+}
 function findHighestPriorityRoot() {
   var highestPriorityWork = 0,
     highestPriorityRoot = null;
@@ -5562,14 +6131,11 @@ function findHighestPriorityRoot() {
             (root.nextScheduledRoot = null);
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          0 === highestPriorityWork ||
-          remainingExpirationTime < highestPriorityWork
-        )
-          (highestPriorityWork = remainingExpirationTime),
-            (highestPriorityRoot = root);
+        remainingExpirationTime > highestPriorityWork &&
+          ((highestPriorityWork = remainingExpirationTime),
+          (highestPriorityRoot = root));
         if (root === lastScheduledRoot) break;
-        if (1 === highestPriorityWork) break;
+        if (1073741823 === highestPriorityWork) break;
         previousScheduledRoot = root;
         root = root.nextScheduledRoot;
       }
@@ -5577,38 +6143,44 @@ function findHighestPriorityRoot() {
   nextFlushedRoot = highestPriorityRoot;
   nextFlushedExpirationTime = highestPriorityWork;
 }
-function performAsyncWork(dl) {
-  if (dl.didTimeout && null !== firstScheduledRoot) {
-    recomputeCurrentRendererTime();
-    var root = firstScheduledRoot;
-    do {
-      var expirationTime = root.expirationTime;
-      0 !== expirationTime &&
-        currentRendererTime >= expirationTime &&
-        (root.nextExpirationTimeToWorkOn = currentRendererTime);
-      root = root.nextScheduledRoot;
-    } while (root !== firstScheduledRoot);
+var didYield = !1;
+function shouldYieldToRenderer() {
+  return didYield ? !0 : frameDeadline <= now$1() ? (didYield = !0) : !1;
+}
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer() && null !== firstScheduledRoot) {
+      recomputeCurrentRendererTime();
+      var root = firstScheduledRoot;
+      do {
+        var expirationTime = root.expirationTime;
+        0 !== expirationTime &&
+          currentRendererTime <= expirationTime &&
+          (root.nextExpirationTimeToWorkOn = currentRendererTime);
+        root = root.nextScheduledRoot;
+      } while (root !== firstScheduledRoot);
+    }
+    performWork(0, !0);
+  } finally {
+    didYield = !1;
   }
-  performWork(0, dl);
 }
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
+function performWork(minExpirationTime, isYieldy) {
   findHighestPriorityRoot();
-  if (null !== deadline)
+  if (isYieldy)
     for (
       recomputeCurrentRendererTime(),
         currentSchedulerTime = currentRendererTime;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime);
 
     )
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       ),
         findHighestPriorityRoot(),
         recomputeCurrentRendererTime(),
@@ -5618,29 +6190,28 @@ function performWork(minExpirationTime, dl) {
       ;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime;
 
     )
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !0),
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !1),
         findHighestPriorityRoot();
-  null !== deadline && ((callbackExpirationTime = 0), (callbackID = null));
+  isYieldy && ((callbackExpirationTime = 0), (callbackID = null));
   0 !== nextFlushedExpirationTime &&
     scheduleCallbackWithExpirationTime(
       nextFlushedRoot,
       nextFlushedExpirationTime
     );
-  deadline = null;
-  deadlineDidExpire = !1;
   nestedUpdateCount = 0;
   lastCommittedRootDuringThisBatch = null;
   if (null !== completedBatches)
     for (
-      minExpirationTime = completedBatches, completedBatches = null, dl = 0;
-      dl < minExpirationTime.length;
-      dl++
+      minExpirationTime = completedBatches,
+        completedBatches = null,
+        isYieldy = 0;
+      isYieldy < minExpirationTime.length;
+      isYieldy++
     ) {
-      var batch = minExpirationTime[dl];
+      var batch = minExpirationTime[isYieldy];
       try {
         batch._onComplete();
       } catch (error) {
@@ -5654,39 +6225,45 @@ function performWork(minExpirationTime, dl) {
     (hasUnhandledError = !1),
     minExpirationTime);
 }
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
   isRendering = !0;
-  if (null === deadline || isExpired) {
-    var finishedWork = root.finishedWork;
-    null !== finishedWork
-      ? completeRoot$1(root, finishedWork, expirationTime)
+  if (isYieldy) {
+    var _finishedWork = root.finishedWork;
+    null !== _finishedWork
+      ? completeRoot$1(root, _finishedWork, expirationTime)
       : ((root.finishedWork = null),
-        renderRoot(root, !1, isExpired),
-        (finishedWork = root.finishedWork),
-        null !== finishedWork &&
-          completeRoot$1(root, finishedWork, expirationTime));
+        (_finishedWork = root.timeoutHandle),
+        -1 !== _finishedWork &&
+          ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+        renderRoot(root, isYieldy),
+        (_finishedWork = root.finishedWork),
+        null !== _finishedWork &&
+          (shouldYieldToRenderer()
+            ? (root.finishedWork = _finishedWork)
+            : completeRoot$1(root, _finishedWork, expirationTime)));
   } else
-    (finishedWork = root.finishedWork),
-      null !== finishedWork
-        ? completeRoot$1(root, finishedWork, expirationTime)
+    (_finishedWork = root.finishedWork),
+      null !== _finishedWork
+        ? completeRoot$1(root, _finishedWork, expirationTime)
         : ((root.finishedWork = null),
-          renderRoot(root, !0, isExpired),
-          (finishedWork = root.finishedWork),
-          null !== finishedWork &&
-            (shouldYield()
-              ? (root.finishedWork = finishedWork)
-              : completeRoot$1(root, finishedWork, expirationTime)));
+          (_finishedWork = root.timeoutHandle),
+          -1 !== _finishedWork &&
+            ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+          renderRoot(root, isYieldy),
+          (_finishedWork = root.finishedWork),
+          null !== _finishedWork &&
+            completeRoot$1(root, _finishedWork, expirationTime));
   isRendering = !1;
 }
 function completeRoot$1(root, finishedWork, expirationTime) {
   var firstBatch = root.firstBatch;
   if (
     null !== firstBatch &&
-    firstBatch._expirationTime <= expirationTime &&
+    firstBatch._expirationTime >= expirationTime &&
     (null === completedBatches
       ? (completedBatches = [firstBatch])
       : completedBatches.push(firstBatch),
@@ -5702,13 +6279,6 @@ function completeRoot$1(root, finishedWork, expirationTime) {
     : ((lastCommittedRootDuringThisBatch = root), (nestedUpdateCount = 0));
   commitRoot(root, finishedWork);
 }
-function shouldYield() {
-  return deadlineDidExpire
-    ? !0
-    : null === deadline || deadline.timeRemaining() > timeHeuristicForUnitOfWork
-      ? !1
-      : (deadlineDidExpire = !0);
-}
 function onUncaughtError(error) {
   invariant(
     null !== nextFlushedRoot,
@@ -5717,56 +6287,7 @@ function onUncaughtError(error) {
   nextFlushedRoot.expirationTime = 0;
   hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
 }
-function getContextForSubtree(parentComponent) {
-  if (!parentComponent) return emptyContextObject;
-  parentComponent = parentComponent._reactInternalFiber;
-  a: {
-    invariant(
-      2 === isFiberMountedImpl(parentComponent) &&
-        (2 === parentComponent.tag || 3 === parentComponent.tag),
-      "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
-    );
-    var parentContext = parentComponent;
-    do {
-      switch (parentContext.tag) {
-        case 5:
-          parentContext = parentContext.stateNode.context;
-          break a;
-        case 2:
-          if (isContextProvider(parentContext.type)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-          break;
-        case 3:
-          if (isContextProvider(parentContext.type._reactResult)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-      }
-      parentContext = parentContext.return;
-    } while (null !== parentContext);
-    invariant(
-      !1,
-      "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
-    );
-    parentContext = void 0;
-  }
-  if (2 === parentComponent.tag) {
-    var Component = parentComponent.type;
-    if (isContextProvider(Component))
-      return processChildContext(parentComponent, Component, parentContext);
-  } else if (
-    3 === parentComponent.tag &&
-    ((Component = parentComponent.type._reactResult),
-    isContextProvider(Component))
-  )
-    return processChildContext(parentComponent, Component, parentContext);
-  return parentContext;
-}
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = component._reactInternalFiber;
   void 0 === fiber &&
     ("function" === typeof component.render
@@ -5784,7 +6305,48 @@ function updateContainer(element, container, parentComponent, callback) {
     currentTime = requestCurrentTime();
   current$$1 = computeExpirationForFiber(currentTime, current$$1);
   currentTime = container.current;
-  parentComponent = getContextForSubtree(parentComponent);
+  a: if (parentComponent) {
+    parentComponent = parentComponent._reactInternalFiber;
+    b: {
+      invariant(
+        2 === isFiberMountedImpl(parentComponent) && 1 === parentComponent.tag,
+        "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
+      );
+      var parentContext = parentComponent;
+      do {
+        switch (parentContext.tag) {
+          case 3:
+            parentContext = parentContext.stateNode.context;
+            break b;
+          case 1:
+            if (isContextProvider(parentContext.type)) {
+              parentContext =
+                parentContext.stateNode
+                  .__reactInternalMemoizedMergedChildContext;
+              break b;
+            }
+        }
+        parentContext = parentContext.return;
+      } while (null !== parentContext);
+      invariant(
+        !1,
+        "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
+      );
+      parentContext = void 0;
+    }
+    if (1 === parentComponent.tag) {
+      var Component = parentComponent.type;
+      if (isContextProvider(Component)) {
+        parentComponent = processChildContext(
+          parentComponent,
+          Component,
+          parentContext
+        );
+        break a;
+      }
+    }
+    parentComponent = parentContext;
+  } else parentComponent = emptyContextObject;
   null === container.context
     ? (container.context = parentComponent)
     : (container.pendingContext = parentComponent);
@@ -5793,6 +6355,7 @@ function updateContainer(element, container, parentComponent, callback) {
   callback.payload = { element: element };
   container = void 0 === container ? null : container;
   null !== container && (callback.callback = container);
+  flushPassiveEffects();
   enqueueUpdate(currentTime, callback);
   scheduleWork(currentTime, current$$1);
   return current$$1;
@@ -5837,7 +6400,7 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle._nativeTag) return componentOrHandle._nativeTag;
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag)
     return componentOrHandle.canonical._nativeTag;
-  componentOrHandle = findHostInstance$1(componentOrHandle);
+  componentOrHandle = findHostInstance(componentOrHandle);
   return null == componentOrHandle
     ? componentOrHandle
     : componentOrHandle.canonical
@@ -5852,13 +6415,13 @@ _batchedUpdatesImpl = function(fn, a) {
   } finally {
     (isBatchingUpdates = previousIsBatchingUpdates) ||
       isRendering ||
-      performWork(1, null);
+      performWork(1073741823, !1);
   }
 };
 _flushInteractiveUpdatesImpl = function() {
   isRendering ||
     0 === lowestPriorityPendingInteractiveExpirationTime ||
-    (performWork(lowestPriorityPendingInteractiveExpirationTime, null),
+    (performWork(lowestPriorityPendingInteractiveExpirationTime, !1),
     (lowestPriorityPendingInteractiveExpirationTime = 0));
 };
 var roots = new Map(),
@@ -5933,14 +6496,14 @@ var roots = new Map(),
         };
         return ReactNativeComponent;
       })(React.Component);
-    })(findNodeHandle, findHostInstance$1),
+    })(findNodeHandle, findHostInstance),
     findNodeHandle: findNodeHandle,
     render: function(element, containerTag, callback) {
       var root = roots.get(containerTag);
       if (!root) {
         root = 0;
         isDevToolsPresent && (root |= 4);
-        root = new FiberNode(5, null, null, root);
+        root = createFiber(3, null, null, root);
         var root$jscomp$0 = {
           current: root,
           containerInfo: containerTag,
@@ -5961,7 +6524,7 @@ var roots = new Map(),
           expirationTime: 0,
           firstBatch: null,
           nextScheduledRoot: null,
-          interactionThreadID: tracking.unstable_getThreadID(),
+          interactionThreadID: tracing.unstable_getThreadID(),
           memoizedInteractions: new Set(),
           pendingInteractionMap: new Map()
         };
@@ -5971,7 +6534,7 @@ var roots = new Map(),
       updateContainer(element, root, null, callback);
       a: if (((element = root.current), element.child))
         switch (element.child.tag) {
-          case 7:
+          case 5:
             element = element.child.stateNode.canonical;
             break a;
           default:
@@ -6046,7 +6609,7 @@ var roots = new Map(),
             TextInputState.blurTextInput(findNodeHandle(this));
           }
         };
-      })(findNodeHandle, findHostInstance$1)
+      })(findNodeHandle, findHostInstance)
     }
   };
 (function(devToolsConfig) {
@@ -6068,7 +6631,7 @@ var roots = new Map(),
   findFiberByHostInstance: getInstanceFromInstance,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
   bundleType: 0,
-  version: "16.5.0",
+  version: "16.6.1",
   rendererPackageName: "react-native-renderer"
 });
 var ReactFabric$2 = { default: ReactFabric },
diff --git a/Libraries/Renderer/oss/ReactNativeRenderer-dev.js b/Libraries/Renderer/oss/ReactNativeRenderer-dev.js
index b3fdfc9aebd3aa..329aabccc5d1ed 100644
--- a/Libraries/Renderer/oss/ReactNativeRenderer-dev.js
+++ b/Libraries/Renderer/oss/ReactNativeRenderer-dev.js
@@ -26,7 +26,8 @@ var deepDiffer = require("deepDiffer");
 var flattenStyle = require("flattenStyle");
 var TextInputState = require("TextInputState");
 var checkPropTypes = require("prop-types/checkPropTypes");
-var tracking = require("schedule/tracking");
+var tracing = require("scheduler/tracing");
+var scheduler = require("scheduler");
 var ExceptionsManager = require("ExceptionsManager");
 
 /**
@@ -165,6 +166,13 @@ var invokeGuardedCallbackImpl = function(
       // browsers that support it.
       var windowEvent = window.event;
 
+      // Keeps track of the descriptor of window.event to restore it after event
+      // dispatching: https://github.com/facebook/react/issues/13688
+      var windowEventDescriptor = Object.getOwnPropertyDescriptor(
+        window,
+        "event"
+      );
+
       // Create an event handler for our fake event. We will synchronously
       // dispatch our fake event using `dispatchEvent`. Inside the handler, we
       // call the user-provided callback.
@@ -239,6 +247,10 @@ var invokeGuardedCallbackImpl = function(
       evt.initEvent(evtType, false, false);
       fakeNode.dispatchEvent(evt);
 
+      if (windowEventDescriptor) {
+        Object.defineProperty(window, "event", windowEventDescriptor);
+      }
+
       if (didError) {
         if (!didSetError) {
           // The callback errored, but the error event never fired.
@@ -606,19 +618,24 @@ var warningWithoutStack = function() {};
           "message argument"
       );
     }
+    if (args.length > 8) {
+      // Check before the condition to catch violations early.
+      throw new Error(
+        "warningWithoutStack() currently supports at most 8 arguments."
+      );
+    }
     if (condition) {
       return;
     }
     if (typeof console !== "undefined") {
-      var _console;
-
-      var stringArgs = args.map(function(item) {
+      var argsWithFormat = args.map(function(item) {
         return "" + item;
       });
-      (_console = console).error.apply(
-        _console,
-        ["Warning: " + format].concat(stringArgs)
-      );
+      argsWithFormat.unshift("Warning: " + format);
+
+      // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      Function.prototype.apply.call(console.error, console, argsWithFormat);
     }
     try {
       // --- Welcome to debugging React ---
@@ -689,11 +706,10 @@ var validateEventDispatches = void 0;
 /**
  * Dispatch the event to the listener.
  * @param {SyntheticEvent} event SyntheticEvent to handle
- * @param {boolean} simulated If the event is simulated (changes exn behavior)
  * @param {function} listener Application-level callback
  * @param {*} inst Internal component instance
  */
-function executeDispatch(event, simulated, listener, inst) {
+function executeDispatch(event, listener, inst) {
   var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
   invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
@@ -703,7 +719,7 @@ function executeDispatch(event, simulated, listener, inst) {
 /**
  * Standard/simple iteration through an event's collected dispatches.
  */
-function executeDispatchesInOrder(event, simulated) {
+function executeDispatchesInOrder(event) {
   var dispatchListeners = event._dispatchListeners;
   var dispatchInstances = event._dispatchInstances;
   {
@@ -715,15 +731,10 @@ function executeDispatchesInOrder(event, simulated) {
         break;
       }
       // Listeners and Instances are two parallel arrays that are always in sync.
-      executeDispatch(
-        event,
-        simulated,
-        dispatchListeners[i],
-        dispatchInstances[i]
-      );
+      executeDispatch(event, dispatchListeners[i], dispatchInstances[i]);
     }
   } else if (dispatchListeners) {
-    executeDispatch(event, simulated, dispatchListeners, dispatchInstances);
+    executeDispatch(event, dispatchListeners, dispatchInstances);
   }
   event._dispatchListeners = null;
   event._dispatchInstances = null;
@@ -876,23 +887,19 @@ var eventQueue = null;
  * Dispatches an event and releases it back into the pool, unless persistent.
  *
  * @param {?object} event Synthetic event to be dispatched.
- * @param {boolean} simulated If the event is simulated (changes exn behavior)
  * @private
  */
-var executeDispatchesAndRelease = function(event, simulated) {
+var executeDispatchesAndRelease = function(event) {
   if (event) {
-    executeDispatchesInOrder(event, simulated);
+    executeDispatchesInOrder(event);
 
     if (!event.isPersistent()) {
       event.constructor.release(event);
     }
   }
 };
-var executeDispatchesAndReleaseSimulated = function(e) {
-  return executeDispatchesAndRelease(e, true);
-};
 var executeDispatchesAndReleaseTopLevel = function(e) {
-  return executeDispatchesAndRelease(e, false);
+  return executeDispatchesAndRelease(e);
 };
 
 function isInteractive(tag) {
@@ -1026,7 +1033,7 @@ function extractEvents(
   return events;
 }
 
-function runEventsInBatch(events, simulated) {
+function runEventsInBatch(events) {
   if (events !== null) {
     eventQueue = accumulateInto(eventQueue, events);
   }
@@ -1040,17 +1047,7 @@ function runEventsInBatch(events, simulated) {
     return;
   }
 
-  if (simulated) {
-    forEachAccumulated(
-      processingEventQueue,
-      executeDispatchesAndReleaseSimulated
-    );
-  } else {
-    forEachAccumulated(
-      processingEventQueue,
-      executeDispatchesAndReleaseTopLevel
-    );
-  }
+  forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);
   invariant(
     !eventQueue,
     "processEventQueue(): Additional events were enqueued while processing " +
@@ -1072,26 +1069,27 @@ function runExtractedEventsInBatch(
     nativeEvent,
     nativeEventTarget
   );
-  runEventsInBatch(events, false);
-}
-
-var FunctionalComponent = 0;
-var FunctionalComponentLazy = 1;
-var ClassComponent = 2;
-var ClassComponentLazy = 3;
-var IndeterminateComponent = 4; // Before we know whether it is functional or class
-var HostRoot = 5; // Root of a host tree. Could be nested inside another node.
-var HostPortal = 6; // A subtree. Could be an entry point to a different renderer.
-var HostComponent = 7;
-var HostText = 8;
-var Fragment = 9;
-var Mode = 10;
-var ContextConsumer = 11;
-var ContextProvider = 12;
-var ForwardRef = 13;
-var ForwardRefLazy = 14;
-var Profiler = 15;
-var PlaceholderComponent = 16;
+  runEventsInBatch(events);
+}
+
+var FunctionComponent = 0;
+var ClassComponent = 1;
+var IndeterminateComponent = 2; // Before we know whether it is function or class
+var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+var HostPortal = 4; // A subtree. Could be an entry point to a different renderer.
+var HostComponent = 5;
+var HostText = 6;
+var Fragment = 7;
+var Mode = 8;
+var ContextConsumer = 9;
+var ContextProvider = 10;
+var ForwardRef = 11;
+var Profiler = 12;
+var SuspenseComponent = 13;
+var MemoComponent = 14;
+var SimpleMemoComponent = 15;
+var LazyComponent = 16;
+var IncompleteClassComponent = 17;
 
 function getParent(inst) {
   do {
@@ -2443,14 +2441,8 @@ var ResponderEventPlugin = {
   }
 };
 
-var customBubblingEventTypes$1 =
-  ReactNativeViewConfigRegistry.customBubblingEventTypes;
-var customDirectEventTypes$1 =
-  ReactNativeViewConfigRegistry.customDirectEventTypes;
-var eventTypes$2 = ReactNativeViewConfigRegistry.eventTypes;
-
 var ReactNativeBridgeEventPlugin = {
-  eventTypes: eventTypes$2,
+  eventTypes: ReactNativeViewConfigRegistry.eventTypes,
 
   /**
    * @see {EventPluginHub.extractEvents}
@@ -2465,8 +2457,10 @@ var ReactNativeBridgeEventPlugin = {
       // Probably a node belonging to another renderer's tree.
       return null;
     }
-    var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType];
-    var directDispatchConfig = customDirectEventTypes$1[topLevelType];
+    var bubbleDispatchConfig =
+      ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType];
+    var directDispatchConfig =
+      ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
     invariant(
       bubbleDispatchConfig || directDispatchConfig,
       'Unsupported top level event type "%s" dispatched',
@@ -2788,14 +2782,6 @@ function receiveTouches(eventTopLevelType, touches, changedIndices) {
   }
 }
 
-var ReactNativeEventEmitter = Object.freeze({
-  getListener: getListener,
-  registrationNames: registrationNameModules,
-  _receiveRootNodeIDEvent: _receiveRootNodeIDEvent,
-  receiveEvent: receiveEvent,
-  receiveTouches: receiveTouches
-});
-
 // Module provided by RN:
 var ReactNativeGlobalResponderHandler = {
   onChange: function(from, to, blockNativeResponder) {
@@ -2812,7 +2798,10 @@ var ReactNativeGlobalResponderHandler = {
 /**
  * Register the event emitter with the native bridge
  */
-RCTEventEmitter.register(ReactNativeEventEmitter);
+RCTEventEmitter.register({
+  receiveEvent: receiveEvent,
+  receiveTouches: receiveTouches
+});
 
 setComponentTree(
   getFiberCurrentPropsFromNode$1,
@@ -2864,13 +2853,16 @@ var REACT_STRICT_MODE_TYPE = hasSymbol
 var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 0xead2;
 var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 0xeacd;
 var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 0xeace;
-var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 0xeacf;
+
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol
+  ? Symbol.for("react.concurrent_mode")
+  : 0xeacf;
 var REACT_FORWARD_REF_TYPE = hasSymbol
   ? Symbol.for("react.forward_ref")
   : 0xead0;
-var REACT_PLACEHOLDER_TYPE = hasSymbol
-  ? Symbol.for("react.placeholder")
-  : 0xead1;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 0xead1;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 0xead4;
 
 var MAYBE_ITERATOR_SYMBOL = typeof Symbol === "function" && Symbol.iterator;
 var FAUX_ITERATOR_SYMBOL = "@@iterator";
@@ -2892,12 +2884,16 @@ var Pending = 0;
 var Resolved = 1;
 var Rejected = 2;
 
-function getResultFromResolvedThenable(thenable) {
-  return thenable._reactResult;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
 }
 
-function refineResolvedThenable(thenable) {
-  return thenable._reactStatus === Resolved ? thenable._reactResult : null;
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || "";
+  return (
+    outerType.displayName ||
+    (functionName !== "" ? wrapperName + "(" + functionName + ")" : wrapperName)
+  );
 }
 
 function getComponentName(type) {
@@ -2921,8 +2917,8 @@ function getComponentName(type) {
     return type;
   }
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -2931,8 +2927,8 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
   if (typeof type === "object") {
     switch (type.$$typeof) {
@@ -2941,17 +2937,15 @@ function getComponentName(type) {
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
-        var renderFn = type.render;
-        var functionName = renderFn.displayName || renderFn.name || "";
-        return functionName !== ""
-          ? "ForwardRef(" + functionName + ")"
-          : "ForwardRef";
-    }
-    if (typeof type.then === "function") {
-      var thenable = type;
-      var resolvedThenable = refineResolvedThenable(thenable);
-      if (resolvedThenable) {
-        return getComponentName(resolvedThenable);
+        return getWrappedName(type, type.render, "ForwardRef");
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE: {
+        var thenable = type;
+        var resolvedThenable = refineResolvedLazyComponent(thenable);
+        if (resolvedThenable) {
+          return getComponentName(resolvedThenable);
+        }
       }
     }
   }
@@ -2972,15 +2966,16 @@ var Callback = /*              */ 32;
 var DidCapture = /*            */ 64;
 var Ref = /*                   */ 128;
 var Snapshot = /*              */ 256;
+var Passive = /*               */ 512;
 
-// Update & Callback & Ref & Snapshot
-var LifecycleEffectMask = /*   */ 420;
+// Passive & Update & Callback & Ref & Snapshot
+var LifecycleEffectMask = /*   */ 932;
 
 // Union of all host effects
-var HostEffectMask = /*        */ 511;
+var HostEffectMask = /*        */ 1023;
 
-var Incomplete = /*            */ 512;
-var ShouldCapture = /*         */ 1024;
+var Incomplete = /*            */ 1024;
+var ShouldCapture = /*         */ 2048;
 
 var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
 
@@ -3024,10 +3019,7 @@ function isFiberMounted(fiber) {
 function isMounted(component) {
   {
     var owner = ReactCurrentOwner$1.current;
-    if (
-      owner !== null &&
-      (owner.tag === ClassComponent || owner.tag === ClassComponentLazy)
-    ) {
+    if (owner !== null && owner.tag === ClassComponent) {
       var ownerFiber = owner;
       var instance = ownerFiber.stateNode;
       !instance._warnedAboutRefsInRender
@@ -3822,13 +3814,6 @@ var now$1 = hasNativePerformanceNow
 var scheduledCallback = null;
 var frameDeadline = 0;
 
-var frameDeadlineObject = {
-  timeRemaining: function() {
-    return frameDeadline - now$1();
-  },
-  didTimeout: false
-};
-
 function setTimeoutCallback() {
   // TODO (bvaughn) Hard-coded 5ms unblocks initial async testing.
   // React API probably changing to boolean rather than time remaining.
@@ -3839,7 +3824,7 @@ function setTimeoutCallback() {
   var callback = scheduledCallback;
   scheduledCallback = null;
   if (callback !== null) {
-    callback(frameDeadlineObject);
+    callback();
   }
 }
 
@@ -3858,6 +3843,10 @@ function cancelDeferredCallback$1(callbackID) {
   clearTimeout(callbackID); // Timeouts are always numbers on RN
 }
 
+function shouldYield$1() {
+  return frameDeadline <= now$1();
+}
+
 // Renderers that don't support persistence
 // can re-export everything from this module.
 
@@ -3877,6 +3866,9 @@ var createContainerChildSet = shim;
 var appendChildToContainerChildSet = shim;
 var finalizeContainerChildren = shim;
 var replaceContainerChildren = shim;
+var cloneHiddenInstance = shim;
+var cloneUnhiddenInstance = shim;
+var createHiddenTextInstance = shim;
 
 // Renderers that don't support hydration
 // can re-export everything from this module.
@@ -3884,7 +3876,7 @@ var replaceContainerChildren = shim;
 function shim$1() {
   invariant(
     false,
-    "The current renderer does not support hyration. " +
+    "The current renderer does not support hydration. " +
       "This error is likely caused by a bug in React. " +
       "Please file an issue."
   );
@@ -4081,10 +4073,11 @@ function resetAfterCommit(containerInfo) {
   // Noop
 }
 
-var now = now$1;
+var now$$1 = now$1;
 var isPrimaryRenderer = true;
-var scheduleDeferredCallback = scheduleDeferredCallback$1;
-var cancelDeferredCallback = cancelDeferredCallback$1;
+var scheduleDeferredCallback$$1 = scheduleDeferredCallback$1;
+var cancelDeferredCallback$$1 = cancelDeferredCallback$1;
+var shouldYield$$1 = shouldYield$1;
 
 var scheduleTimeout = setTimeout;
 var cancelTimeout = clearTimeout;
@@ -4262,6 +4255,41 @@ function resetTextContent(instance) {
   // Noop
 }
 
+function hideInstance(instance) {
+  var viewConfig = instance.viewConfig;
+  var updatePayload = create(
+    { style: { display: "none" } },
+    viewConfig.validAttributes
+  );
+  UIManager.updateView(
+    instance._nativeTag,
+    viewConfig.uiViewClassName,
+    updatePayload
+  );
+}
+
+function hideTextInstance(textInstance) {
+  throw new Error("Not yet implemented.");
+}
+
+function unhideInstance(instance, props) {
+  var viewConfig = instance.viewConfig;
+  var updatePayload = diff(
+    Object.assign({}, props, { style: [props.style, { display: "none" }] }),
+    props,
+    viewConfig.validAttributes
+  );
+  UIManager.updateView(
+    instance._nativeTag,
+    viewConfig.uiViewClassName,
+    updatePayload
+  );
+}
+
+function unhideTextInstance(textInstance, text) {
+  throw new Error("Not yet implemented.");
+}
+
 var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
 
 var describeComponentFrame = function(name, source, ownerName) {
@@ -4294,13 +4322,14 @@ var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
 
 function describeFiber(fiber) {
   switch (fiber.tag) {
-    case IndeterminateComponent:
-    case FunctionalComponent:
-    case FunctionalComponentLazy:
-    case ClassComponent:
-    case ClassComponentLazy:
-    case HostComponent:
-    case Mode:
+    case HostRoot:
+    case HostPortal:
+    case HostText:
+    case Fragment:
+    case ContextProvider:
+    case ContextConsumer:
+      return "";
+    default:
       var owner = fiber._debugOwner;
       var source = fiber._debugSource;
       var name = getComponentName(fiber.type);
@@ -4309,8 +4338,6 @@ function describeFiber(fiber) {
         ownerName = getComponentName(owner.type);
       }
       return describeComponentFrame(name, source, ownerName);
-    default:
-      return "";
   }
 }
 
@@ -4376,14 +4403,12 @@ function setCurrentPhase(lifeCyclePhase) {
 
 var debugRenderPhaseSideEffects = false;
 var debugRenderPhaseSideEffectsForStrictMode = false;
-var enableGetDerivedStateFromCatch = false;
-var enableSuspense = false;
+var enableHooks = false;
 var enableUserTimingAPI = true;
 var replayFailedUnitOfWorkWithInvokeGuardedCallback = true;
 var warnAboutDeprecatedLifecycles = false;
-var warnAboutLegacyContextAPI = false;
 var enableProfilerTimer = true;
-var enableSchedulerTracking = true;
+var enableSchedulerTracing = true;
 
 // Only used in www builds.
 
@@ -4657,7 +4682,10 @@ function stopFailedWorkTimer(fiber) {
       return;
     }
     fiber._debugIsCurrentlyTiming = false;
-    var warning = "An error was thrown inside this error boundary";
+    var warning =
+      fiber.tag === SuspenseComponent
+        ? "Rendering was suspended"
+        : "An error was thrown inside this error boundary";
     endFiberMark(fiber, null, warning);
   }
 }
@@ -5148,8 +5176,7 @@ function findCurrentUnmaskedContext(fiber) {
   // Currently this is only used with renderSubtreeIntoContainer; not sure if it
   // makes sense elsewhere
   invariant(
-    isFiberMounted(fiber) &&
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy),
+    isFiberMounted(fiber) && fiber.tag === ClassComponent,
     "Expected subtree parent to be a mounted class component. " +
       "This error is likely caused by a bug in React. Please file an issue."
   );
@@ -5166,13 +5193,6 @@ function findCurrentUnmaskedContext(fiber) {
         }
         break;
       }
-      case ClassComponentLazy: {
-        var _Component = getResultFromResolvedThenable(node.type);
-        if (isContextProvider(_Component)) {
-          return node.stateNode.__reactInternalMemoizedMergedChildContext;
-        }
-        break;
-      }
     }
     node = node.return;
   } while (node !== null);
@@ -5271,20 +5291,20 @@ function onCommitUnmount(fiber) {
 var maxSigned31BitInt = 1073741823;
 
 var NoWork = 0;
-var Sync = 1;
-var Never = maxSigned31BitInt;
+var Never = 1;
+var Sync = maxSigned31BitInt;
 
 var UNIT_SIZE = 10;
-var MAGIC_NUMBER_OFFSET = 2;
+var MAGIC_NUMBER_OFFSET = maxSigned31BitInt - 1;
 
 // 1 unit of expiration time represents 10ms.
 function msToExpirationTime(ms) {
   // Always add an offset so that we don't clash with the magic number for NoWork.
-  return ((ms / UNIT_SIZE) | 0) + MAGIC_NUMBER_OFFSET;
+  return MAGIC_NUMBER_OFFSET - ((ms / UNIT_SIZE) | 0);
 }
 
 function expirationTimeToMs(expirationTime) {
-  return (expirationTime - MAGIC_NUMBER_OFFSET) * UNIT_SIZE;
+  return (MAGIC_NUMBER_OFFSET - expirationTime) * UNIT_SIZE;
 }
 
 function ceiling(num, precision) {
@@ -5293,9 +5313,9 @@ function ceiling(num, precision) {
 
 function computeExpirationBucket(currentTime, expirationInMs, bucketSizeMs) {
   return (
-    MAGIC_NUMBER_OFFSET +
+    MAGIC_NUMBER_OFFSET -
     ceiling(
-      currentTime - MAGIC_NUMBER_OFFSET + expirationInMs / UNIT_SIZE,
+      MAGIC_NUMBER_OFFSET - currentTime + expirationInMs / UNIT_SIZE,
       bucketSizeMs / UNIT_SIZE
     )
   );
@@ -5335,7 +5355,7 @@ function computeInteractiveExpiration(currentTime) {
 }
 
 var NoContext = 0;
-var AsyncMode = 1;
+var ConcurrentMode = 1;
 var StrictMode = 2;
 var ProfileMode = 4;
 
@@ -5371,6 +5391,7 @@ function FiberNode(tag, pendingProps, key, mode) {
   // Instance
   this.tag = tag;
   this.key = key;
+  this.elementType = null;
   this.type = null;
   this.stateNode = null;
 
@@ -5403,6 +5424,23 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.alternate = null;
 
   if (enableProfilerTimer) {
+    // Note: The following is done to avoid a v8 deopt.
+    //
+    // It is important to initialize the fields below with doubles.
+    // Otherwise Fibers will deopt and end up having separate shapes when
+    // doubles are later assigned to fields that initially contained smis.
+    // This is a bug in v8 having something to do with Object.preventExtension().
+    //
+    // Learn more about this deopt here:
+    // https://github.com/facebook/react/issues/14365
+    // https://bugs.chromium.org/p/v8/issues/detail?id=8538
+    this.actualDuration = Number.NaN;
+    this.actualStartTime = Number.NaN;
+    this.selfBaseDuration = Number.NaN;
+    this.treeBaseDuration = Number.NaN;
+
+    // It's okay to replace the initial doubles with smis after initialization.
+    // This simplifies other profiler code and doesn't trigger the deopt.
     this.actualDuration = 0;
     this.actualStartTime = -1;
     this.selfBaseDuration = 0;
@@ -5443,17 +5481,25 @@ function shouldConstruct(Component) {
   return !!(prototype && prototype.isReactComponent);
 }
 
-function resolveLazyComponentTag(fiber, Component) {
+function isSimpleFunctionComponent(type) {
+  return (
+    typeof type === "function" &&
+    !shouldConstruct(type) &&
+    type.defaultProps === undefined
+  );
+}
+
+function resolveLazyComponentTag(Component) {
   if (typeof Component === "function") {
-    return shouldConstruct(Component)
-      ? ClassComponentLazy
-      : FunctionalComponentLazy;
-  } else if (
-    Component !== undefined &&
-    Component !== null &&
-    Component.$$typeof
-  ) {
-    return ForwardRefLazy;
+    return shouldConstruct(Component) ? ClassComponent : FunctionComponent;
+  } else if (Component !== undefined && Component !== null) {
+    var $$typeof = Component.$$typeof;
+    if ($$typeof === REACT_FORWARD_REF_TYPE) {
+      return ForwardRef;
+    }
+    if ($$typeof === REACT_MEMO_TYPE) {
+      return MemoComponent;
+    }
   }
   return IndeterminateComponent;
 }
@@ -5473,6 +5519,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       current.key,
       current.mode
     );
+    workInProgress.elementType = current.elementType;
     workInProgress.type = current.type;
     workInProgress.stateNode = current.stateNode;
 
@@ -5507,15 +5554,8 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
     }
   }
 
-  // Don't touching the subtree's expiration time, which has not changed.
   workInProgress.childExpirationTime = current.childExpirationTime;
-  if (pendingProps !== current.pendingProps) {
-    // This fiber has new props.
-    workInProgress.expirationTime = expirationTime;
-  } else {
-    // This fiber's props have not changed.
-    workInProgress.expirationTime = current.expirationTime;
-  }
+  workInProgress.expirationTime = current.expirationTime;
 
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
@@ -5536,8 +5576,8 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   return workInProgress;
 }
 
-function createHostRootFiber(isAsync) {
-  var mode = isAsync ? AsyncMode | StrictMode : NoContext;
+function createHostRootFiber(isConcurrent) {
+  var mode = isConcurrent ? ConcurrentMode | StrictMode : NoContext;
 
   if (enableProfilerTimer && isDevToolsPresent) {
     // Always collect profile timings when DevTools are present.
@@ -5549,20 +5589,23 @@ function createHostRootFiber(isAsync) {
   return createFiber(HostRoot, null, null, mode);
 }
 
-function createFiberFromElement(element, mode, expirationTime) {
-  var owner = null;
-  {
-    owner = element._owner;
-  }
-
+function createFiberFromTypeAndProps(
+  type, // React$ElementType
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
   var fiber = void 0;
-  var type = element.type;
-  var key = element.key;
-  var pendingProps = element.props;
 
-  var fiberTag = void 0;
+  var fiberTag = IndeterminateComponent;
+  // The resolved type is set if we know what the final type will be. I.e. it's not lazy.
+  var resolvedType = type;
   if (typeof type === "function") {
-    fiberTag = shouldConstruct(type) ? ClassComponent : IndeterminateComponent;
+    if (shouldConstruct(type)) {
+      fiberTag = ClassComponent;
+    }
   } else if (typeof type === "string") {
     fiberTag = HostComponent;
   } else {
@@ -5574,19 +5617,24 @@ function createFiberFromElement(element, mode, expirationTime) {
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = Mode;
-        mode |= AsyncMode | StrictMode;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(
+          pendingProps,
+          mode | ConcurrentMode | StrictMode,
+          expirationTime,
+          key
+        );
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = Mode;
-        mode |= StrictMode;
-        break;
+        return createFiberFromMode(
+          pendingProps,
+          mode | StrictMode,
+          expirationTime,
+          key
+        );
       case REACT_PROFILER_TYPE:
         return createFiberFromProfiler(pendingProps, mode, expirationTime, key);
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = PlaceholderComponent;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return createFiberFromSuspense(pendingProps, mode, expirationTime, key);
       default: {
         if (typeof type === "object" && type !== null) {
           switch (type.$$typeof) {
@@ -5600,12 +5648,13 @@ function createFiberFromElement(element, mode, expirationTime) {
             case REACT_FORWARD_REF_TYPE:
               fiberTag = ForwardRef;
               break getTag;
-            default: {
-              if (typeof type.then === "function") {
-                fiberTag = IndeterminateComponent;
-                break getTag;
-              }
-            }
+            case REACT_MEMO_TYPE:
+              fiberTag = MemoComponent;
+              break getTag;
+            case REACT_LAZY_TYPE:
+              fiberTag = LazyComponent;
+              resolvedType = null;
+              break getTag;
           }
         }
         var info = "";
@@ -5639,14 +5688,33 @@ function createFiberFromElement(element, mode, expirationTime) {
   }
 
   fiber = createFiber(fiberTag, pendingProps, key, mode);
-  fiber.type = type;
+  fiber.elementType = type;
+  fiber.type = resolvedType;
   fiber.expirationTime = expirationTime;
 
+  return fiber;
+}
+
+function createFiberFromElement(element, mode, expirationTime) {
+  var owner = null;
+  {
+    owner = element._owner;
+  }
+  var type = element.type;
+  var key = element.key;
+  var pendingProps = element.props;
+  var fiber = createFiberFromTypeAndProps(
+    type,
+    key,
+    pendingProps,
+    owner,
+    mode,
+    expirationTime
+  );
   {
     fiber._debugSource = element._source;
     fiber._debugOwner = element._owner;
   }
-
   return fiber;
 }
 
@@ -5670,12 +5738,41 @@ function createFiberFromProfiler(pendingProps, mode, expirationTime, key) {
   }
 
   var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode);
+  // TODO: The Profiler fiber shouldn't have a type. It has a tag.
+  fiber.elementType = REACT_PROFILER_TYPE;
   fiber.type = REACT_PROFILER_TYPE;
   fiber.expirationTime = expirationTime;
 
   return fiber;
 }
 
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(Mode, pendingProps, key, mode);
+
+  // TODO: The Mode fiber shouldn't have a type. It has a tag.
+  var type =
+    (mode & ConcurrentMode) === NoContext
+      ? REACT_STRICT_MODE_TYPE
+      : REACT_CONCURRENT_MODE_TYPE;
+  fiber.elementType = type;
+  fiber.type = type;
+
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
+function createFiberFromSuspense(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(SuspenseComponent, pendingProps, key, mode);
+
+  // TODO: The SuspenseComponent fiber shouldn't have a type. It has a tag.
+  var type = REACT_SUSPENSE_TYPE;
+  fiber.elementType = type;
+  fiber.type = type;
+
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
 function createFiberFromText(content, mode, expirationTime) {
   var fiber = createFiber(HostText, content, null, mode);
   fiber.expirationTime = expirationTime;
@@ -5684,6 +5781,8 @@ function createFiberFromText(content, mode, expirationTime) {
 
 function createFiberFromHostInstanceForDeletion() {
   var fiber = createFiber(HostComponent, null, null, NoContext);
+  // TODO: These should not need a type.
+  fiber.elementType = "DELETED";
   fiber.type = "DELETED";
   return fiber;
 }
@@ -5716,6 +5815,7 @@ function assignFiberPropertiesInDEV(target, source) {
 
   target.tag = source.tag;
   target.key = source.key;
+  target.elementType = source.elementType;
   target.type = source.type;
   target.stateNode = source.stateNode;
   target.return = source.return;
@@ -5749,29 +5849,26 @@ function assignFiberPropertiesInDEV(target, source) {
   return target;
 }
 
-/* eslint-disable no-use-before-define */
 // TODO: This should be lifted into the renderer.
 
-// The following attributes are only used by interaction tracking builds.
+// The following attributes are only used by interaction tracing builds.
 // They enable interactions to be associated with their async work,
 // And expose interaction metadata to the React DevTools Profiler plugin.
-// Note that these attributes are only defined when the enableSchedulerTracking flag is enabled.
+// Note that these attributes are only defined when the enableSchedulerTracing flag is enabled.
 
 // Exported FiberRoot type includes all properties,
 // To avoid requiring potentially error-prone :any casts throughout the project.
-// Profiling properties are only safe to access in profiling builds (when enableSchedulerTracking is true).
+// Profiling properties are only safe to access in profiling builds (when enableSchedulerTracing is true).
 // The types are defined separately within this file to ensure they stay in sync.
-// (We don't have to use an inline :any cast when enableSchedulerTracking is disabled.)
-
-/* eslint-enable no-use-before-define */
+// (We don't have to use an inline :any cast when enableSchedulerTracing is disabled.)
 
-function createFiberRoot(containerInfo, isAsync, hydrate) {
+function createFiberRoot(containerInfo, isConcurrent, hydrate) {
   // Cyclic construction. This cheats the type system right now because
   // stateNode is any.
-  var uninitializedFiber = createHostRootFiber(isAsync);
+  var uninitializedFiber = createHostRootFiber(isConcurrent);
 
   var root = void 0;
-  if (enableSchedulerTracking) {
+  if (enableSchedulerTracing) {
     root = {
       current: uninitializedFiber,
       containerInfo: containerInfo,
@@ -5796,7 +5893,7 @@ function createFiberRoot(containerInfo, isAsync, hydrate) {
       firstBatch: null,
       nextScheduledRoot: null,
 
-      interactionThreadID: tracking.unstable_getThreadID(),
+      interactionThreadID: tracing.unstable_getThreadID(),
       memoizedInteractions: new Set(),
       pendingInteractionMap: new Map()
     };
@@ -5830,8 +5927,8 @@ function createFiberRoot(containerInfo, isAsync, hydrate) {
   uninitializedFiber.stateNode = root;
 
   // The reason for the way the Flow types are structured in this file,
-  // Is to avoid needing :any casts everywhere interaction tracking fields are used.
-  // Unfortunately that requires an :any cast for non-interaction tracking capable builds.
+  // Is to avoid needing :any casts everywhere interaction tracing fields are used.
+  // Unfortunately that requires an :any cast for non-interaction tracing capable builds.
   // $FlowFixMe Remove this :any cast and replace it with something better.
   return root;
 }
@@ -6261,12 +6358,12 @@ function markPendingPriorityLevel(root, expirationTime) {
     // No other pending updates.
     root.earliestPendingTime = root.latestPendingTime = expirationTime;
   } else {
-    if (earliestPendingTime > expirationTime) {
+    if (earliestPendingTime < expirationTime) {
       // This is the earliest pending update.
       root.earliestPendingTime = expirationTime;
     } else {
       var latestPendingTime = root.latestPendingTime;
-      if (latestPendingTime < expirationTime) {
+      if (latestPendingTime > expirationTime) {
         // This is the latest pending update
         root.latestPendingTime = expirationTime;
       }
@@ -6292,12 +6389,12 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   // Let's see if the previous latest known pending level was just flushed.
   var latestPendingTime = root.latestPendingTime;
   if (latestPendingTime !== NoWork) {
-    if (latestPendingTime < earliestRemainingTime) {
+    if (latestPendingTime > earliestRemainingTime) {
       // We've flushed all the known pending levels.
       root.earliestPendingTime = root.latestPendingTime = NoWork;
     } else {
       var earliestPendingTime = root.earliestPendingTime;
-      if (earliestPendingTime < earliestRemainingTime) {
+      if (earliestPendingTime > earliestRemainingTime) {
         // We've flushed the earliest known pending level. Set this to the
         // latest pending time.
         root.earliestPendingTime = root.latestPendingTime;
@@ -6319,7 +6416,7 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   }
 
   var latestSuspendedTime = root.latestSuspendedTime;
-  if (earliestRemainingTime > latestSuspendedTime) {
+  if (earliestRemainingTime < latestSuspendedTime) {
     // The earliest remaining level is later than all the suspended work. That
     // means we've flushed all the suspended work.
     root.earliestSuspendedTime = NoWork;
@@ -6333,7 +6430,7 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
     return;
   }
 
-  if (earliestRemainingTime < earliestSuspendedTime) {
+  if (earliestRemainingTime > earliestSuspendedTime) {
     // The earliest remaining time is earlier than all the suspended work.
     // Treat it as a pending update.
     markPendingPriorityLevel(root, earliestRemainingTime);
@@ -6352,10 +6449,10 @@ function hasLowerPriorityWork(root, erroredExpirationTime) {
   var latestPingedTime = root.latestPingedTime;
   return (
     (latestPendingTime !== NoWork &&
-      latestPendingTime > erroredExpirationTime) ||
+      latestPendingTime < erroredExpirationTime) ||
     (latestSuspendedTime !== NoWork &&
-      latestSuspendedTime > erroredExpirationTime) ||
-    (latestPingedTime !== NoWork && latestPingedTime > erroredExpirationTime)
+      latestSuspendedTime < erroredExpirationTime) ||
+    (latestPingedTime !== NoWork && latestPingedTime < erroredExpirationTime)
   );
 }
 
@@ -6364,8 +6461,8 @@ function isPriorityLevelSuspended(root, expirationTime) {
   var latestSuspendedTime = root.latestSuspendedTime;
   return (
     earliestSuspendedTime !== NoWork &&
-    expirationTime >= earliestSuspendedTime &&
-    expirationTime <= latestSuspendedTime
+    expirationTime <= earliestSuspendedTime &&
+    expirationTime >= latestSuspendedTime
   );
 }
 
@@ -6398,10 +6495,10 @@ function markSuspendedPriorityLevel(root, suspendedTime) {
     // No other suspended levels.
     root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime;
   } else {
-    if (earliestSuspendedTime > suspendedTime) {
+    if (earliestSuspendedTime < suspendedTime) {
       // This is the earliest suspended level.
       root.earliestSuspendedTime = suspendedTime;
-    } else if (latestSuspendedTime < suspendedTime) {
+    } else if (latestSuspendedTime > suspendedTime) {
       // This is the latest suspended level
       root.latestSuspendedTime = suspendedTime;
     }
@@ -6417,7 +6514,7 @@ function markPingedPriorityLevel(root, pingedTime) {
   // is thrown out and not reused during the restarted render. One way to
   // invalidate the progressed work is to restart at expirationTime + 1.
   var latestPingedTime = root.latestPingedTime;
-  if (latestPingedTime === NoWork || latestPingedTime < pingedTime) {
+  if (latestPingedTime === NoWork || latestPingedTime > pingedTime) {
     root.latestPingedTime = pingedTime;
   }
   findNextExpirationTimeToWorkOn(pingedTime, root);
@@ -6427,7 +6524,7 @@ function clearPing(root, completedTime) {
   // TODO: Track whether the root was pinged during the render phase. If so,
   // we need to make sure we don't lose track of it.
   var latestPingedTime = root.latestPingedTime;
-  if (latestPingedTime !== NoWork && latestPingedTime <= completedTime) {
+  if (latestPingedTime !== NoWork && latestPingedTime >= completedTime) {
     root.latestPingedTime = NoWork;
   }
 }
@@ -6437,18 +6534,10 @@ function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
 
   var earliestPendingTime = root.earliestPendingTime;
   var earliestSuspendedTime = root.earliestSuspendedTime;
-  if (
-    earliestExpirationTime === NoWork ||
-    (earliestPendingTime !== NoWork &&
-      earliestPendingTime < earliestExpirationTime)
-  ) {
+  if (earliestPendingTime > earliestExpirationTime) {
     earliestExpirationTime = earliestPendingTime;
   }
-  if (
-    earliestExpirationTime === NoWork ||
-    (earliestSuspendedTime !== NoWork &&
-      earliestSuspendedTime < earliestExpirationTime)
-  ) {
+  if (earliestSuspendedTime > earliestExpirationTime) {
     earliestExpirationTime = earliestSuspendedTime;
   }
   return earliestExpirationTime;
@@ -6456,7 +6545,7 @@ function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
 
 function didExpireAtExpirationTime(root, currentTime) {
   var expirationTime = root.expirationTime;
-  if (expirationTime !== NoWork && currentTime >= expirationTime) {
+  if (expirationTime !== NoWork && currentTime <= expirationTime) {
     // The root has expired. Flush all work up to the current time.
     root.nextExpirationTimeToWorkOn = currentTime;
   }
@@ -6478,7 +6567,7 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   if (
     nextExpirationTimeToWorkOn === NoWork &&
     (completedExpirationTime === NoWork ||
-      latestSuspendedTime > completedExpirationTime)
+      latestSuspendedTime < completedExpirationTime)
   ) {
     // The lowest priority suspended work is the work most likely to be
     // committed next. Let's start rendering it again, so that if it times out,
@@ -6487,11 +6576,7 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   }
 
   var expirationTime = nextExpirationTimeToWorkOn;
-  if (
-    expirationTime !== NoWork &&
-    earliestSuspendedTime !== NoWork &&
-    earliestSuspendedTime < expirationTime
-  ) {
+  if (expirationTime !== NoWork && earliestSuspendedTime > expirationTime) {
     // Expire using the earliest known expiration time.
     expirationTime = earliestSuspendedTime;
   }
@@ -6715,7 +6800,7 @@ function enqueueUpdate(fiber, update) {
 
   {
     if (
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy) &&
+      fiber.tag === ClassComponent &&
       (currentlyProcessingQueue === queue1 ||
         (queue2 !== null && currentlyProcessingQueue === queue2)) &&
       !didWarnUpdateInsideUpdate
@@ -6863,7 +6948,7 @@ function processUpdateQueue(
   var resultState = newBaseState;
   while (update !== null) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
+    if (updateExpirationTime < renderExpirationTime) {
       // This update does not have sufficient priority. Skip it.
       if (newFirstUpdate === null) {
         // This is the first skipped update. It will be the first update in
@@ -6875,10 +6960,7 @@ function processUpdateQueue(
       }
       // Since this update will remain in the list, update the remaining
       // expiration time.
-      if (
-        newExpirationTime === NoWork ||
-        newExpirationTime > updateExpirationTime
-      ) {
+      if (newExpirationTime < updateExpirationTime) {
         newExpirationTime = updateExpirationTime;
       }
     } else {
@@ -6914,7 +6996,7 @@ function processUpdateQueue(
   update = queue.firstCapturedUpdate;
   while (update !== null) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
+    if (_updateExpirationTime < renderExpirationTime) {
       // This update does not have sufficient priority. Skip it.
       if (newFirstCapturedUpdate === null) {
         // This is the first skipped captured update. It will be the first
@@ -6928,10 +7010,7 @@ function processUpdateQueue(
       }
       // Since this update will remain in the list, update the remaining
       // expiration time.
-      if (
-        newExpirationTime === NoWork ||
-        newExpirationTime > _updateExpirationTime
-      ) {
+      if (newExpirationTime < _updateExpirationTime) {
         newExpirationTime = _updateExpirationTime;
       }
     } else {
@@ -7229,10 +7308,7 @@ function propagateContextChange(
         ) {
           // Match! Schedule an update on this fiber.
 
-          if (
-            fiber.tag === ClassComponent ||
-            fiber.tag === ClassComponentLazy
-          ) {
+          if (fiber.tag === ClassComponent) {
             // Schedule a force update on the work-in-progress.
             var update = createUpdate(renderExpirationTime);
             update.tag = ForceUpdate;
@@ -7243,17 +7319,13 @@ function propagateContextChange(
             enqueueUpdate(fiber, update);
           }
 
-          if (
-            fiber.expirationTime === NoWork ||
-            fiber.expirationTime > renderExpirationTime
-          ) {
+          if (fiber.expirationTime < renderExpirationTime) {
             fiber.expirationTime = renderExpirationTime;
           }
           var alternate = fiber.alternate;
           if (
             alternate !== null &&
-            (alternate.expirationTime === NoWork ||
-              alternate.expirationTime > renderExpirationTime)
+            alternate.expirationTime < renderExpirationTime
           ) {
             alternate.expirationTime = renderExpirationTime;
           }
@@ -7262,22 +7334,17 @@ function propagateContextChange(
           var node = fiber.return;
           while (node !== null) {
             alternate = node.alternate;
-            if (
-              node.childExpirationTime === NoWork ||
-              node.childExpirationTime > renderExpirationTime
-            ) {
+            if (node.childExpirationTime < renderExpirationTime) {
               node.childExpirationTime = renderExpirationTime;
               if (
                 alternate !== null &&
-                (alternate.childExpirationTime === NoWork ||
-                  alternate.childExpirationTime > renderExpirationTime)
+                alternate.childExpirationTime < renderExpirationTime
               ) {
                 alternate.childExpirationTime = renderExpirationTime;
               }
             } else if (
               alternate !== null &&
-              (alternate.childExpirationTime === NoWork ||
-                alternate.childExpirationTime > renderExpirationTime)
+              alternate.childExpirationTime < renderExpirationTime
             ) {
               alternate.childExpirationTime = renderExpirationTime;
             } else {
@@ -7362,7 +7429,7 @@ function readContext(context, observedBits) {
     if (lastContextDependency === null) {
       invariant(
         currentlyRenderingFiber !== null,
-        "Context.unstable_read(): Context can only be read while React is " +
+        "Context can only be read while React is " +
           "rendering, e.g. inside the render method or getDerivedStateFromProps."
       );
       // This is the first dependency in the list
@@ -7375,124 +7442,752 @@ function readContext(context, observedBits) {
   return isPrimaryRenderer ? context._currentValue : context._currentValue2;
 }
 
-var NO_CONTEXT = {};
+var NoEffect$1 = /*             */ 0;
+var UnmountSnapshot = /*      */ 2;
+var UnmountMutation = /*      */ 4;
+var MountMutation = /*        */ 8;
+var UnmountLayout = /*        */ 16;
+var MountLayout = /*          */ 32;
+var MountPassive = /*         */ 64;
+var UnmountPassive = /*       */ 128;
 
-var contextStackCursor$1 = createCursor(NO_CONTEXT);
-var contextFiberStackCursor = createCursor(NO_CONTEXT);
-var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+function areHookInputsEqual(arr1, arr2) {
+  // Don't bother comparing lengths in prod because these arrays should be
+  // passed inline.
+  {
+    !(arr1.length === arr2.length)
+      ? warning$1(
+          false,
+          "Detected a variable number of hook dependencies. The length of the " +
+            "dependencies array should be constant between renders.\n\n" +
+            "Previous: %s\n" +
+            "Incoming: %s",
+          arr1.join(", "),
+          arr2.join(", ")
+        )
+      : void 0;
+  }
+  for (var i = 0; i < arr1.length; i++) {
+    // Inlined Object.is polyfill.
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+    var val1 = arr1[i];
+    var val2 = arr2[i];
+    if (
+      (val1 === val2 && (val1 !== 0 || 1 / val1 === 1 / val2)) ||
+      (val1 !== val1 && val2 !== val2) // eslint-disable-line no-self-compare
+    ) {
+      continue;
+    }
+    return false;
+  }
+  return true;
+}
 
-function requiredContext(c) {
+// These are set right before calling the component.
+var renderExpirationTime = NoWork;
+// The work-in-progress fiber. I've named it differently to distinguish it from
+// the work-in-progress hook.
+var currentlyRenderingFiber$1 = null;
+
+// Hooks are stored as a linked list on the fiber's memoizedState field. The
+// current hook list is the list that belongs to the current fiber. The
+// work-in-progress hook list is a new list that will be added to the
+// work-in-progress fiber.
+var firstCurrentHook = null;
+var currentHook = null;
+var firstWorkInProgressHook = null;
+var workInProgressHook = null;
+
+var remainingExpirationTime = NoWork;
+var componentUpdateQueue = null;
+
+// Updates scheduled during render will trigger an immediate re-render at the
+// end of the current pass. We can't store these updates on the normal queue,
+// because if the work is aborted, they should be discarded. Because this is
+// a relatively rare case, we also don't want to add an additional field to
+// either the hook or queue object types. So we store them in a lazily create
+// map of queue -> render-phase updates, which are discarded once the component
+// completes without re-rendering.
+
+// Whether the work-in-progress hook is a re-rendered hook
+var isReRender = false;
+// Whether an update was scheduled during the currently executing render pass.
+var didScheduleRenderPhaseUpdate = false;
+// Lazily created map of render-phase updates
+var renderPhaseUpdates = null;
+// Counter to prevent infinite loops.
+var numberOfReRenders = 0;
+var RE_RENDER_LIMIT = 25;
+
+function resolveCurrentlyRenderingFiber() {
   invariant(
-    c !== NO_CONTEXT,
-    "Expected host context to exist. This error is likely caused by a bug " +
-      "in React. Please file an issue."
+    currentlyRenderingFiber$1 !== null,
+    "Hooks can only be called inside the body of a function component."
   );
-  return c;
+  return currentlyRenderingFiber$1;
 }
 
-function getRootHostContainer() {
-  var rootInstance = requiredContext(rootInstanceStackCursor.current);
-  return rootInstance;
-}
+function prepareToUseHooks(current, workInProgress, nextRenderExpirationTime) {
+  if (!enableHooks) {
+    return;
+  }
+  renderExpirationTime = nextRenderExpirationTime;
+  currentlyRenderingFiber$1 = workInProgress;
+  firstCurrentHook = current !== null ? current.memoizedState : null;
 
-function pushHostContainer(fiber, nextRootInstance) {
-  // Push current root instance onto the stack;
-  // This allows us to reset root when portals are popped.
-  push(rootInstanceStackCursor, nextRootInstance, fiber);
-  // Track the context and the Fiber that provided it.
-  // This enables us to pop only Fibers that provide unique contexts.
-  push(contextFiberStackCursor, fiber, fiber);
+  // The following should have already been reset
+  // currentHook = null;
+  // workInProgressHook = null;
 
-  // Finally, we need to push the host context to the stack.
-  // However, we can't just call getRootHostContext() and push it because
-  // we'd have a different number of entries on the stack depending on
-  // whether getRootHostContext() throws somewhere in renderer code or not.
-  // So we push an empty value first. This lets us safely unwind on errors.
-  push(contextStackCursor$1, NO_CONTEXT, fiber);
-  var nextRootContext = getRootHostContext(nextRootInstance);
-  // Now that we know this function doesn't throw, replace it.
-  pop(contextStackCursor$1, fiber);
-  push(contextStackCursor$1, nextRootContext, fiber);
-}
+  // remainingExpirationTime = NoWork;
+  // componentUpdateQueue = null;
 
-function popHostContainer(fiber) {
-  pop(contextStackCursor$1, fiber);
-  pop(contextFiberStackCursor, fiber);
-  pop(rootInstanceStackCursor, fiber);
+  // isReRender = false;
+  // didScheduleRenderPhaseUpdate = false;
+  // renderPhaseUpdates = null;
+  // numberOfReRenders = 0;
 }
 
-function getHostContext() {
-  var context = requiredContext(contextStackCursor$1.current);
-  return context;
-}
+function finishHooks(Component, props, children, refOrContext) {
+  if (!enableHooks) {
+    return children;
+  }
 
-function pushHostContext(fiber) {
-  var rootInstance = requiredContext(rootInstanceStackCursor.current);
-  var context = requiredContext(contextStackCursor$1.current);
-  var nextContext = getChildHostContext(context, fiber.type, rootInstance);
+  // This must be called after every function component to prevent hooks from
+  // being used in classes.
 
-  // Don't push this Fiber's context unless it's unique.
-  if (context === nextContext) {
-    return;
-  }
+  while (didScheduleRenderPhaseUpdate) {
+    // Updates were scheduled during the render phase. They are stored in
+    // the `renderPhaseUpdates` map. Call the component again, reusing the
+    // work-in-progress hooks and applying the additional updates on top. Keep
+    // restarting until no more updates are scheduled.
+    didScheduleRenderPhaseUpdate = false;
+    numberOfReRenders += 1;
 
-  // Track the context and the Fiber that provided it.
-  // This enables us to pop only Fibers that provide unique contexts.
-  push(contextFiberStackCursor, fiber, fiber);
-  push(contextStackCursor$1, nextContext, fiber);
-}
+    // Start over from the beginning of the list
+    currentHook = null;
+    workInProgressHook = null;
+    componentUpdateQueue = null;
 
-function popHostContext(fiber) {
-  // Do not pop unless this Fiber provided the current context.
-  // pushHostContext() only pushes Fibers that provide unique contexts.
-  if (contextFiberStackCursor.current !== fiber) {
-    return;
+    children = Component(props, refOrContext);
   }
+  renderPhaseUpdates = null;
+  numberOfReRenders = 0;
 
-  pop(contextStackCursor$1, fiber);
-  pop(contextFiberStackCursor, fiber);
-}
+  var renderedWork = currentlyRenderingFiber$1;
 
-var commitTime = 0;
-var profilerStartTime = -1;
+  renderedWork.memoizedState = firstWorkInProgressHook;
+  renderedWork.expirationTime = remainingExpirationTime;
+  renderedWork.updateQueue = componentUpdateQueue;
 
-function getCommitTime() {
-  return commitTime;
-}
+  var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null;
 
-function recordCommitTime() {
-  if (!enableProfilerTimer) {
-    return;
-  }
-  commitTime = now();
-}
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
 
-function startProfilerTimer(fiber) {
-  if (!enableProfilerTimer) {
-    return;
-  }
+  firstCurrentHook = null;
+  currentHook = null;
+  firstWorkInProgressHook = null;
+  workInProgressHook = null;
 
-  profilerStartTime = now();
+  remainingExpirationTime = NoWork;
+  componentUpdateQueue = null;
 
-  if (fiber.actualStartTime < 0) {
-    fiber.actualStartTime = now();
-  }
+  // Always set during createWorkInProgress
+  // isReRender = false;
+
+  // These were reset above
+  // didScheduleRenderPhaseUpdate = false;
+  // renderPhaseUpdates = null;
+  // numberOfReRenders = 0;
+
+  invariant(
+    !didRenderTooFewHooks,
+    "Rendered fewer hooks than expected. This may be caused by an accidental " +
+      "early return statement."
+  );
+
+  return children;
 }
 
-function stopProfilerTimerIfRunning(fiber) {
-  if (!enableProfilerTimer) {
+function resetHooks() {
+  if (!enableHooks) {
     return;
   }
-  profilerStartTime = -1;
-}
 
-function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
-  if (!enableProfilerTimer) {
+  // This is called instead of `finishHooks` if the component throws. It's also
+  // called inside mountIndeterminateComponent if we determine the component
+  // is a module-style component.
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
+
+  firstCurrentHook = null;
+  currentHook = null;
+  firstWorkInProgressHook = null;
+  workInProgressHook = null;
+
+  remainingExpirationTime = NoWork;
+  componentUpdateQueue = null;
+
+  // Always set during createWorkInProgress
+  // isReRender = false;
+
+  didScheduleRenderPhaseUpdate = false;
+  renderPhaseUpdates = null;
+  numberOfReRenders = 0;
+}
+
+function createHook() {
+  return {
+    memoizedState: null,
+
+    baseState: null,
+    queue: null,
+    baseUpdate: null,
+
+    next: null
+  };
+}
+
+function cloneHook(hook) {
+  return {
+    memoizedState: hook.memoizedState,
+
+    baseState: hook.baseState,
+    queue: hook.queue,
+    baseUpdate: hook.baseUpdate,
+
+    next: null
+  };
+}
+
+function createWorkInProgressHook() {
+  if (workInProgressHook === null) {
+    // This is the first hook in the list
+    if (firstWorkInProgressHook === null) {
+      isReRender = false;
+      currentHook = firstCurrentHook;
+      if (currentHook === null) {
+        // This is a newly mounted hook
+        workInProgressHook = createHook();
+      } else {
+        // Clone the current hook.
+        workInProgressHook = cloneHook(currentHook);
+      }
+      firstWorkInProgressHook = workInProgressHook;
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      currentHook = firstCurrentHook;
+      workInProgressHook = firstWorkInProgressHook;
+    }
+  } else {
+    if (workInProgressHook.next === null) {
+      isReRender = false;
+      var hook = void 0;
+      if (currentHook === null) {
+        // This is a newly mounted hook
+        hook = createHook();
+      } else {
+        currentHook = currentHook.next;
+        if (currentHook === null) {
+          // This is a newly mounted hook
+          hook = createHook();
+        } else {
+          // Clone the current hook.
+          hook = cloneHook(currentHook);
+        }
+      }
+      // Append to the end of the list
+      workInProgressHook = workInProgressHook.next = hook;
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = workInProgressHook.next;
+      currentHook = currentHook !== null ? currentHook.next : null;
+    }
+  }
+  return workInProgressHook;
+}
+
+function createFunctionComponentUpdateQueue() {
+  return {
+    lastEffect: null
+  };
+}
+
+function basicStateReducer(state, action) {
+  return typeof action === "function" ? action(state) : action;
+}
+
+function useContext(context, observedBits) {
+  // Ensure we're in a function component (class components support only the
+  // .unstable_read() form)
+  resolveCurrentlyRenderingFiber();
+  return readContext(context, observedBits);
+}
+
+function useState(initialState) {
+  return useReducer(
+    basicStateReducer,
+    // useReducer has a special case to support lazy useState initializers
+    initialState
+  );
+}
+
+function useReducer(reducer, initialState, initialAction) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+  var queue = workInProgressHook.queue;
+  if (queue !== null) {
+    // Already have a queue, so this is an update.
+    if (isReRender) {
+      // This is a re-render. Apply the new render phase updates to the previous
+      var _dispatch2 = queue.dispatch;
+      if (renderPhaseUpdates !== null) {
+        // Render phase updates are stored in a map of queue -> linked list
+        var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+        if (firstRenderPhaseUpdate !== undefined) {
+          renderPhaseUpdates.delete(queue);
+          var newState = workInProgressHook.memoizedState;
+          var update = firstRenderPhaseUpdate;
+          do {
+            // Process this render phase update. We don't have to check the
+            // priority because it will always be the same as the current
+            // render's.
+            var _action = update.action;
+            newState = reducer(newState, _action);
+            update = update.next;
+          } while (update !== null);
+
+          workInProgressHook.memoizedState = newState;
+
+          // Don't persist the state accumlated from the render phase updates to
+          // the base state unless the queue is empty.
+          // TODO: Not sure if this is the desired semantics, but it's what we
+          // do for gDSFP. I can't remember why.
+          if (workInProgressHook.baseUpdate === queue.last) {
+            workInProgressHook.baseState = newState;
+          }
+
+          return [newState, _dispatch2];
+        }
+      }
+      return [workInProgressHook.memoizedState, _dispatch2];
+    }
+
+    // The last update in the entire queue
+    var _last = queue.last;
+    // The last update that is part of the base state.
+    var _baseUpdate = workInProgressHook.baseUpdate;
+
+    // Find the first unprocessed update.
+    var first = void 0;
+    if (_baseUpdate !== null) {
+      if (_last !== null) {
+        // For the first update, the queue is a circular linked list where
+        // `queue.last.next = queue.first`. Once the first update commits, and
+        // the `baseUpdate` is no longer empty, we can unravel the list.
+        _last.next = null;
+      }
+      first = _baseUpdate.next;
+    } else {
+      first = _last !== null ? _last.next : null;
+    }
+    if (first !== null) {
+      var _newState = workInProgressHook.baseState;
+      var newBaseState = null;
+      var newBaseUpdate = null;
+      var prevUpdate = _baseUpdate;
+      var _update = first;
+      var didSkip = false;
+      do {
+        var updateExpirationTime = _update.expirationTime;
+        if (updateExpirationTime < renderExpirationTime) {
+          // Priority is insufficient. Skip this update. If this is the first
+          // skipped update, the previous update/state is the new base
+          // update/state.
+          if (!didSkip) {
+            didSkip = true;
+            newBaseUpdate = prevUpdate;
+            newBaseState = _newState;
+          }
+          // Update the remaining priority in the queue.
+          if (updateExpirationTime > remainingExpirationTime) {
+            remainingExpirationTime = updateExpirationTime;
+          }
+        } else {
+          // Process this update.
+          var _action2 = _update.action;
+          _newState = reducer(_newState, _action2);
+        }
+        prevUpdate = _update;
+        _update = _update.next;
+      } while (_update !== null && _update !== first);
+
+      if (!didSkip) {
+        newBaseUpdate = prevUpdate;
+        newBaseState = _newState;
+      }
+
+      workInProgressHook.memoizedState = _newState;
+      workInProgressHook.baseUpdate = newBaseUpdate;
+      workInProgressHook.baseState = newBaseState;
+    }
+
+    var _dispatch = queue.dispatch;
+    return [workInProgressHook.memoizedState, _dispatch];
+  }
+
+  // There's no existing queue, so this is the initial render.
+  if (reducer === basicStateReducer) {
+    // Special case for `useState`.
+    if (typeof initialState === "function") {
+      initialState = initialState();
+    }
+  } else if (initialAction !== undefined && initialAction !== null) {
+    initialState = reducer(initialState, initialAction);
+  }
+  workInProgressHook.memoizedState = workInProgressHook.baseState = initialState;
+  queue = workInProgressHook.queue = {
+    last: null,
+    dispatch: null
+  };
+  var dispatch = (queue.dispatch = dispatchAction.bind(
+    null,
+    currentlyRenderingFiber$1,
+    queue
+  ));
+  return [workInProgressHook.memoizedState, dispatch];
+}
+
+function pushEffect(tag, create, destroy, inputs) {
+  var effect = {
+    tag: tag,
+    create: create,
+    destroy: destroy,
+    inputs: inputs,
+    // Circular
+    next: null
+  };
+  if (componentUpdateQueue === null) {
+    componentUpdateQueue = createFunctionComponentUpdateQueue();
+    componentUpdateQueue.lastEffect = effect.next = effect;
+  } else {
+    var _lastEffect = componentUpdateQueue.lastEffect;
+    if (_lastEffect === null) {
+      componentUpdateQueue.lastEffect = effect.next = effect;
+    } else {
+      var firstEffect = _lastEffect.next;
+      _lastEffect.next = effect;
+      effect.next = firstEffect;
+      componentUpdateQueue.lastEffect = effect;
+    }
+  }
+  return effect;
+}
+
+function useRef(initialValue) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+  var ref = void 0;
+
+  if (workInProgressHook.memoizedState === null) {
+    ref = { current: initialValue };
+    {
+      Object.seal(ref);
+    }
+    workInProgressHook.memoizedState = ref;
+  } else {
+    ref = workInProgressHook.memoizedState;
+  }
+  return ref;
+}
+
+function useLayoutEffect(create, inputs) {
+  useEffectImpl(Update, UnmountMutation | MountLayout, create, inputs);
+}
+
+function useEffect(create, inputs) {
+  useEffectImpl(
+    Update | Passive,
+    UnmountPassive | MountPassive,
+    create,
+    inputs
+  );
+}
+
+function useEffectImpl(fiberEffectTag, hookEffectTag, create, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs = inputs !== undefined && inputs !== null ? inputs : [create];
+  var destroy = null;
+  if (currentHook !== null) {
+    var prevEffect = currentHook.memoizedState;
+    destroy = prevEffect.destroy;
+    if (areHookInputsEqual(nextInputs, prevEffect.inputs)) {
+      pushEffect(NoEffect$1, create, destroy, nextInputs);
+      return;
+    }
+  }
+
+  currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+  workInProgressHook.memoizedState = pushEffect(
+    hookEffectTag,
+    create,
+    destroy,
+    nextInputs
+  );
+}
+
+function useImperativeMethods(ref, create, inputs) {
+  // TODO: If inputs are provided, should we skip comparing the ref itself?
+  var nextInputs =
+    inputs !== null && inputs !== undefined
+      ? inputs.concat([ref])
+      : [ref, create];
+
+  // TODO: I've implemented this on top of useEffect because it's almost the
+  // same thing, and it would require an equal amount of code. It doesn't seem
+  // like a common enough use case to justify the additional size.
+  useLayoutEffect(function() {
+    if (typeof ref === "function") {
+      var refCallback = ref;
+      var _inst = create();
+      refCallback(_inst);
+      return function() {
+        return refCallback(null);
+      };
+    } else if (ref !== null && ref !== undefined) {
+      var refObject = ref;
+      var _inst2 = create();
+      refObject.current = _inst2;
+      return function() {
+        refObject.current = null;
+      };
+    }
+  }, nextInputs);
+}
+
+function useCallback(callback, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs =
+    inputs !== undefined && inputs !== null ? inputs : [callback];
+
+  var prevState = workInProgressHook.memoizedState;
+  if (prevState !== null) {
+    var prevInputs = prevState[1];
+    if (areHookInputsEqual(nextInputs, prevInputs)) {
+      return prevState[0];
+    }
+  }
+  workInProgressHook.memoizedState = [callback, nextInputs];
+  return callback;
+}
+
+function useMemo(nextCreate, inputs) {
+  currentlyRenderingFiber$1 = resolveCurrentlyRenderingFiber();
+  workInProgressHook = createWorkInProgressHook();
+
+  var nextInputs =
+    inputs !== undefined && inputs !== null ? inputs : [nextCreate];
+
+  var prevState = workInProgressHook.memoizedState;
+  if (prevState !== null) {
+    var prevInputs = prevState[1];
+    if (areHookInputsEqual(nextInputs, prevInputs)) {
+      return prevState[0];
+    }
+  }
+
+  var nextValue = nextCreate();
+  workInProgressHook.memoizedState = [nextValue, nextInputs];
+  return nextValue;
+}
+
+function dispatchAction(fiber, queue, action) {
+  invariant(
+    numberOfReRenders < RE_RENDER_LIMIT,
+    "Too many re-renders. React limits the number of renders to prevent " +
+      "an infinite loop."
+  );
+
+  var alternate = fiber.alternate;
+  if (
+    fiber === currentlyRenderingFiber$1 ||
+    (alternate !== null && alternate === currentlyRenderingFiber$1)
+  ) {
+    // This is a render phase update. Stash it in a lazily-created map of
+    // queue -> linked list of updates. After this render pass, we'll restart
+    // and apply the stashed updates on top of the work-in-progress hook.
+    didScheduleRenderPhaseUpdate = true;
+    var update = {
+      expirationTime: renderExpirationTime,
+      action: action,
+      next: null
+    };
+    if (renderPhaseUpdates === null) {
+      renderPhaseUpdates = new Map();
+    }
+    var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+    if (firstRenderPhaseUpdate === undefined) {
+      renderPhaseUpdates.set(queue, update);
+    } else {
+      // Append the update to the end of the list.
+      var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
+      while (lastRenderPhaseUpdate.next !== null) {
+        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+      }
+      lastRenderPhaseUpdate.next = update;
+    }
+  } else {
+    var currentTime = requestCurrentTime();
+    var _expirationTime = computeExpirationForFiber(currentTime, fiber);
+    var _update2 = {
+      expirationTime: _expirationTime,
+      action: action,
+      next: null
+    };
+    flushPassiveEffects();
+    // Append the update to the end of the list.
+    var _last2 = queue.last;
+    if (_last2 === null) {
+      // This is the first update. Create a circular list.
+      _update2.next = _update2;
+    } else {
+      var first = _last2.next;
+      if (first !== null) {
+        // Still circular.
+        _update2.next = first;
+      }
+      _last2.next = _update2;
+    }
+    queue.last = _update2;
+    scheduleWork(fiber, _expirationTime);
+  }
+}
+
+var NO_CONTEXT = {};
+
+var contextStackCursor$1 = createCursor(NO_CONTEXT);
+var contextFiberStackCursor = createCursor(NO_CONTEXT);
+var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+
+function requiredContext(c) {
+  invariant(
+    c !== NO_CONTEXT,
+    "Expected host context to exist. This error is likely caused by a bug " +
+      "in React. Please file an issue."
+  );
+  return c;
+}
+
+function getRootHostContainer() {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  return rootInstance;
+}
+
+function pushHostContainer(fiber, nextRootInstance) {
+  // Push current root instance onto the stack;
+  // This allows us to reset root when portals are popped.
+  push(rootInstanceStackCursor, nextRootInstance, fiber);
+  // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+  push(contextFiberStackCursor, fiber, fiber);
+
+  // Finally, we need to push the host context to the stack.
+  // However, we can't just call getRootHostContext() and push it because
+  // we'd have a different number of entries on the stack depending on
+  // whether getRootHostContext() throws somewhere in renderer code or not.
+  // So we push an empty value first. This lets us safely unwind on errors.
+  push(contextStackCursor$1, NO_CONTEXT, fiber);
+  var nextRootContext = getRootHostContext(nextRootInstance);
+  // Now that we know this function doesn't throw, replace it.
+  pop(contextStackCursor$1, fiber);
+  push(contextStackCursor$1, nextRootContext, fiber);
+}
+
+function popHostContainer(fiber) {
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+  pop(rootInstanceStackCursor, fiber);
+}
+
+function getHostContext() {
+  var context = requiredContext(contextStackCursor$1.current);
+  return context;
+}
+
+function pushHostContext(fiber) {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  var context = requiredContext(contextStackCursor$1.current);
+  var nextContext = getChildHostContext(context, fiber.type, rootInstance);
+
+  // Don't push this Fiber's context unless it's unique.
+  if (context === nextContext) {
+    return;
+  }
+
+  // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+  push(contextFiberStackCursor, fiber, fiber);
+  push(contextStackCursor$1, nextContext, fiber);
+}
+
+function popHostContext(fiber) {
+  // Do not pop unless this Fiber provided the current context.
+  // pushHostContext() only pushes Fibers that provide unique contexts.
+  if (contextFiberStackCursor.current !== fiber) {
+    return;
+  }
+
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+}
+
+var commitTime = 0;
+var profilerStartTime = -1;
+
+function getCommitTime() {
+  return commitTime;
+}
+
+function recordCommitTime() {
+  if (!enableProfilerTimer) {
+    return;
+  }
+  commitTime = now$$1();
+}
+
+function startProfilerTimer(fiber) {
+  if (!enableProfilerTimer) {
+    return;
+  }
+
+  profilerStartTime = now$$1();
+
+  if (fiber.actualStartTime < 0) {
+    fiber.actualStartTime = now$$1();
+  }
+}
+
+function stopProfilerTimerIfRunning(fiber) {
+  if (!enableProfilerTimer) {
+    return;
+  }
+  profilerStartTime = -1;
+}
+
+function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
+  if (!enableProfilerTimer) {
     return;
   }
 
   if (profilerStartTime >= 0) {
-    var elapsedTime = now() - profilerStartTime;
+    var elapsedTime = now$$1() - profilerStartTime;
     fiber.actualDuration += elapsedTime;
     if (overrideBaseTime) {
       fiber.selfBaseDuration = elapsedTime;
@@ -7561,8 +8256,82 @@ function shallowEqual(objA, objB) {
   return true;
 }
 
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    // Resolve default props. Taken from ReactElement
+    var props = Object.assign({}, baseProps);
+    var defaultProps = Component.defaultProps;
+    for (var propName in defaultProps) {
+      if (props[propName] === undefined) {
+        props[propName] = defaultProps[propName];
+      }
+    }
+    return props;
+  }
+  return baseProps;
+}
+
+function readLazyComponentType(lazyComponent) {
+  var status = lazyComponent._status;
+  var result = lazyComponent._result;
+  switch (status) {
+    case Resolved: {
+      var Component = result;
+      return Component;
+    }
+    case Rejected: {
+      var error = result;
+      throw error;
+    }
+    case Pending: {
+      var thenable = result;
+      throw thenable;
+    }
+    default: {
+      lazyComponent._status = Pending;
+      var ctor = lazyComponent._ctor;
+      var _thenable = ctor();
+      _thenable.then(
+        function(moduleObject) {
+          if (lazyComponent._status === Pending) {
+            var defaultExport = moduleObject.default;
+            {
+              if (defaultExport === undefined) {
+                warning$1(
+                  false,
+                  "lazy: Expected the result of a dynamic import() call. " +
+                    "Instead received: %s\n\nYour code should look like: \n  " +
+                    "const MyComponent = lazy(() => import('./MyComponent'))",
+                  moduleObject
+                );
+              }
+            }
+            lazyComponent._status = Resolved;
+            lazyComponent._result = defaultExport;
+          }
+        },
+        function(error) {
+          if (lazyComponent._status === Pending) {
+            lazyComponent._status = Rejected;
+            lazyComponent._result = error;
+          }
+        }
+      );
+      lazyComponent._result = _thenable;
+      throw _thenable;
+    }
+  }
+}
+
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner;
+
+function readContext$1(contextType) {
+  var dispatcher = ReactCurrentOwner$4.currentDispatcher;
+  return dispatcher.readContext(contextType);
+}
+
 var fakeInternalInstance = {};
-var isArray = Array.isArray;
+var isArray$1 = Array.isArray;
 
 // React.Component uses a shared frozen object by default.
 // We'll use it to determine whether we need to initialize legacy refs.
@@ -7576,6 +8345,8 @@ var didWarnAboutUndefinedDerivedState = void 0;
 var warnOnUndefinedDerivedState = void 0;
 var warnOnInvalidCallback = void 0;
 var didWarnAboutDirectlyAssigningPropsToState = void 0;
+var didWarnAboutContextTypeAndContextTypes = void 0;
+var didWarnAboutInvalidateContextType = void 0;
 
 {
   didWarnAboutStateAssignmentForComponent = new Set();
@@ -7584,6 +8355,8 @@ var didWarnAboutDirectlyAssigningPropsToState = void 0;
   didWarnAboutLegacyLifecyclesAndDerivedState = new Set();
   didWarnAboutDirectlyAssigningPropsToState = new Set();
   didWarnAboutUndefinedDerivedState = new Set();
+  didWarnAboutContextTypeAndContextTypes = new Set();
+  didWarnAboutInvalidateContextType = new Set();
 
   var didWarnOnInvalidCallback = new Set();
 
@@ -7696,6 +8469,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   },
@@ -7715,6 +8489,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   },
@@ -7733,6 +8508,7 @@ var classComponentUpdater = {
       update.callback = callback;
     }
 
+    flushPassiveEffects();
     enqueueUpdate(fiber, update);
     scheduleWork(fiber, expirationTime);
   }
@@ -7745,7 +8521,7 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   var instance = workInProgress.stateNode;
   if (typeof instance.shouldComponentUpdate === "function") {
@@ -7753,7 +8529,7 @@ function checkShouldComponentUpdate(
     var shouldUpdate = instance.shouldComponentUpdate(
       newProps,
       newState,
-      nextLegacyContext
+      nextContext
     );
     stopPhaseTimer();
 
@@ -7838,6 +8614,15 @@ function checkClassInstance(workInProgress, ctor, newProps) {
           name
         )
       : void 0;
+    var noInstanceContextType = !instance.contextType;
+    !noInstanceContextType
+      ? warningWithoutStack$1(
+          false,
+          "contextType was defined as an instance property on %s. Use a static " +
+            "property to define contextType instead.",
+          name
+        )
+      : void 0;
     var noInstanceContextTypes = !instance.contextTypes;
     !noInstanceContextTypes
       ? warningWithoutStack$1(
@@ -7847,6 +8632,21 @@ function checkClassInstance(workInProgress, ctor, newProps) {
           name
         )
       : void 0;
+
+    if (
+      ctor.contextType &&
+      ctor.contextTypes &&
+      !didWarnAboutContextTypeAndContextTypes.has(ctor)
+    ) {
+      didWarnAboutContextTypeAndContextTypes.add(ctor);
+      warningWithoutStack$1(
+        false,
+        "%s declares both contextTypes and contextType static properties. " +
+          "The legacy contextTypes property will be ignored.",
+        name
+      );
+    }
+
     var noComponentShouldUpdate =
       typeof instance.componentShouldUpdate !== "function";
     !noComponentShouldUpdate
@@ -7962,11 +8762,11 @@ function checkClassInstance(workInProgress, ctor, newProps) {
         )
       : void 0;
     var noInstanceGetDerivedStateFromCatch =
-      typeof instance.getDerivedStateFromCatch !== "function";
+      typeof instance.getDerivedStateFromError !== "function";
     !noInstanceGetDerivedStateFromCatch
       ? warningWithoutStack$1(
           false,
-          "%s: getDerivedStateFromCatch() is defined as an instance method " +
+          "%s: getDerivedStateFromError() is defined as an instance method " +
             "and will be ignored. Instead, declare it as a static method.",
           name
         )
@@ -7982,7 +8782,7 @@ function checkClassInstance(workInProgress, ctor, newProps) {
         )
       : void 0;
     var _state = instance.state;
-    if (_state && (typeof _state !== "object" || isArray(_state))) {
+    if (_state && (typeof _state !== "object" || isArray$1(_state))) {
       warningWithoutStack$1(
         false,
         "%s.state: must be set to an object or null",
@@ -8018,12 +8818,37 @@ function constructClassInstance(
   props,
   renderExpirationTime
 ) {
-  var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
-  var contextTypes = ctor.contextTypes;
-  var isContextConsumer = contextTypes !== null && contextTypes !== undefined;
-  var context = isContextConsumer
-    ? getMaskedContext(workInProgress, unmaskedContext)
-    : emptyContextObject;
+  var isLegacyContextConsumer = false;
+  var unmaskedContext = emptyContextObject;
+  var context = null;
+  var contextType = ctor.contextType;
+  if (typeof contextType === "object" && contextType !== null) {
+    {
+      if (
+        contextType.$$typeof !== REACT_CONTEXT_TYPE &&
+        !didWarnAboutInvalidateContextType.has(ctor)
+      ) {
+        didWarnAboutInvalidateContextType.add(ctor);
+        warningWithoutStack$1(
+          false,
+          "%s defines an invalid contextType. " +
+            "contextType should point to the Context object returned by React.createContext(). " +
+            "Did you accidentally pass the Context.Provider instead?",
+          getComponentName(ctor) || "Component"
+        );
+      }
+    }
+
+    context = readContext$1(contextType);
+  } else {
+    unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    var contextTypes = ctor.contextTypes;
+    isLegacyContextConsumer =
+      contextTypes !== null && contextTypes !== undefined;
+    context = isLegacyContextConsumer
+      ? getMaskedContext(workInProgress, unmaskedContext)
+      : emptyContextObject;
+  }
 
   // Instantiate twice to help detect side-effects.
   {
@@ -8130,7 +8955,7 @@ function constructClassInstance(
 
   // Cache unmasked context so we can avoid recreating masked context unless necessary.
   // ReactFiberContext usually updates this cache but can't for newly-created instances.
-  if (isContextConsumer) {
+  if (isLegacyContextConsumer) {
     cacheContext(workInProgress, unmaskedContext, context);
   }
 
@@ -8168,15 +8993,15 @@ function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   var oldState = instance.state;
   startPhaseTimer(workInProgress, "componentWillReceiveProps");
   if (typeof instance.componentWillReceiveProps === "function") {
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   }
   if (typeof instance.UNSAFE_componentWillReceiveProps === "function") {
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   }
   stopPhaseTimer();
 
@@ -8210,12 +9035,17 @@ function mountClassInstance(
   }
 
   var instance = workInProgress.stateNode;
-  var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
-
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
+
+  var contextType = ctor.contextType;
+  if (typeof contextType === "object" && contextType !== null) {
+    instance.context = readContext$1(contextType);
+  } else {
+    var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    instance.context = getMaskedContext(workInProgress, unmaskedContext);
+  }
 
   {
     if (instance.state === newProps) {
@@ -8316,15 +9146,18 @@ function resumeMountClassInstance(
   instance.props = oldProps;
 
   var oldContext = instance.context;
-  var nextLegacyUnmaskedContext = getUnmaskedContext(
-    workInProgress,
-    ctor,
-    true
-  );
-  var nextLegacyContext = getMaskedContext(
-    workInProgress,
-    nextLegacyUnmaskedContext
-  );
+  var contextType = ctor.contextType;
+  var nextContext = void 0;
+  if (typeof contextType === "object" && contextType !== null) {
+    nextContext = readContext$1(contextType);
+  } else {
+    var nextLegacyUnmaskedContext = getUnmaskedContext(
+      workInProgress,
+      ctor,
+      true
+    );
+    nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext);
+  }
 
   var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
   var hasNewLifecycles =
@@ -8342,12 +9175,12 @@ function resumeMountClassInstance(
     (typeof instance.UNSAFE_componentWillReceiveProps === "function" ||
       typeof instance.componentWillReceiveProps === "function")
   ) {
-    if (oldProps !== newProps || oldContext !== nextLegacyContext) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
       callComponentWillReceiveProps(
         workInProgress,
         instance,
         newProps,
-        nextLegacyContext
+        nextContext
       );
     }
   }
@@ -8400,7 +9233,7 @@ function resumeMountClassInstance(
       newProps,
       oldState,
       newState,
-      nextLegacyContext
+      nextContext
     );
 
   if (shouldUpdate) {
@@ -8440,7 +9273,7 @@ function resumeMountClassInstance(
   // if shouldComponentUpdate returns false.
   instance.props = newProps;
   instance.state = newState;
-  instance.context = nextLegacyContext;
+  instance.context = nextContext;
 
   return shouldUpdate;
 }
@@ -8456,18 +9289,20 @@ function updateClassInstance(
   var instance = workInProgress.stateNode;
 
   var oldProps = workInProgress.memoizedProps;
-  instance.props = oldProps;
+  instance.props =
+    workInProgress.type === workInProgress.elementType
+      ? oldProps
+      : resolveDefaultProps(workInProgress.type, oldProps);
 
   var oldContext = instance.context;
-  var nextLegacyUnmaskedContext = getUnmaskedContext(
-    workInProgress,
-    ctor,
-    true
-  );
-  var nextLegacyContext = getMaskedContext(
-    workInProgress,
-    nextLegacyUnmaskedContext
-  );
+  var contextType = ctor.contextType;
+  var nextContext = void 0;
+  if (typeof contextType === "object" && contextType !== null) {
+    nextContext = readContext$1(contextType);
+  } else {
+    var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    nextContext = getMaskedContext(workInProgress, nextUnmaskedContext);
+  }
 
   var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
   var hasNewLifecycles =
@@ -8485,12 +9320,12 @@ function updateClassInstance(
     (typeof instance.UNSAFE_componentWillReceiveProps === "function" ||
       typeof instance.componentWillReceiveProps === "function")
   ) {
-    if (oldProps !== newProps || oldContext !== nextLegacyContext) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
       callComponentWillReceiveProps(
         workInProgress,
         instance,
         newProps,
-        nextLegacyContext
+        nextContext
       );
     }
   }
@@ -8557,7 +9392,7 @@ function updateClassInstance(
       newProps,
       oldState,
       newState,
-      nextLegacyContext
+      nextContext
     );
 
   if (shouldUpdate) {
@@ -8570,14 +9405,10 @@ function updateClassInstance(
     ) {
       startPhaseTimer(workInProgress, "componentWillUpdate");
       if (typeof instance.componentWillUpdate === "function") {
-        instance.componentWillUpdate(newProps, newState, nextLegacyContext);
+        instance.componentWillUpdate(newProps, newState, nextContext);
       }
       if (typeof instance.UNSAFE_componentWillUpdate === "function") {
-        instance.UNSAFE_componentWillUpdate(
-          newProps,
-          newState,
-          nextLegacyContext
-        );
+        instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext);
       }
       stopPhaseTimer();
     }
@@ -8617,7 +9448,7 @@ function updateClassInstance(
   // if shouldComponentUpdate returns false.
   instance.props = newProps;
   instance.state = newState;
-  instance.context = nextLegacyContext;
+  instance.context = nextContext;
 
   return shouldUpdate;
 }
@@ -8675,7 +9506,7 @@ var warnForMissingKey = function(child) {};
   };
 }
 
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 
 function coerceRef(returnFiber, current$$1, element) {
   var mixedRef = element.ref;
@@ -8710,9 +9541,8 @@ function coerceRef(returnFiber, current$$1, element) {
       if (owner) {
         var ownerFiber = owner;
         invariant(
-          ownerFiber.tag === ClassComponent ||
-            ownerFiber.tag === ClassComponentLazy,
-          "Stateless function components cannot have refs."
+          ownerFiber.tag === ClassComponent,
+          "Function components cannot have refs."
         );
         inst = ownerFiber.stateNode;
       }
@@ -8755,7 +9585,7 @@ function coerceRef(returnFiber, current$$1, element) {
         element._owner,
         "Element ref was specified as a string (%s) but no owner was set. This could happen for one of" +
           " the following reasons:\n" +
-          "1. You may be adding a ref to a functional component\n" +
+          "1. You may be adding a ref to a function component\n" +
           "2. You may be adding a ref to a component that was not created inside a component's render method\n" +
           "3. You have multiple copies of React loaded\n" +
           "See https://fb.me/react-refs-must-have-owner for more information.",
@@ -8931,7 +9761,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   }
 
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (current$$1 !== null && current$$1.type === element.type) {
+    if (current$$1 !== null && current$$1.elementType === element.type) {
       // Move based on index
       var existing = useFiber(current$$1, element.props, expirationTime);
       existing.ref = coerceRef(returnFiber, current$$1, element);
@@ -9043,7 +9873,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         var _created3 = createFiberFromFragment(
           newChild,
           returnFiber.mode,
@@ -9123,7 +9953,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         if (key !== null) {
           return null;
         }
@@ -9205,7 +10035,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         }
       }
 
-      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+      if (isArray(newChild) || getIteratorFn(newChild)) {
         var _matchedFiber3 = existingChildren.get(newIdx) || null;
         return updateFragment(
           returnFiber,
@@ -9669,7 +10499,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         if (
           child.tag === Fragment
             ? element.type === REACT_FRAGMENT_TYPE
-            : child.type === element.type
+            : child.elementType === element.type
         ) {
           deleteRemainingChildren(returnFiber, child.sibling);
           var existing = useFiber(
@@ -9820,7 +10650,7 @@ function ChildReconciler(shouldTrackSideEffects) {
       );
     }
 
-    if (isArray$1(newChild)) {
+    if (isArray(newChild)) {
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -9852,8 +10682,7 @@ function ChildReconciler(shouldTrackSideEffects) {
       // component, throw an error. If Fiber return types are disabled,
       // we already threw above.
       switch (returnFiber.tag) {
-        case ClassComponent:
-        case ClassComponentLazy: {
+        case ClassComponent: {
           {
             var instance = returnFiber.stateNode;
             if (instance.render._isMockFunction) {
@@ -9865,7 +10694,7 @@ function ChildReconciler(shouldTrackSideEffects) {
         // Intentionally fall through to the next case, which handles both
         // functions and classes
         // eslint-disable-next-lined no-fallthrough
-        case FunctionalComponent: {
+        case FunctionComponent: {
           var Component = returnFiber.type;
           invariant(
             false,
@@ -10236,59 +11065,20 @@ function resetHydrationState() {
   isHydrating = false;
 }
 
-function readLazyComponentType(thenable) {
-  var status = thenable._reactStatus;
-  switch (status) {
-    case Resolved:
-      var Component = thenable._reactResult;
-      return Component;
-    case Rejected:
-      throw thenable._reactResult;
-    case Pending:
-      throw thenable;
-    default: {
-      thenable._reactStatus = Pending;
-      thenable.then(
-        function(resolvedValue) {
-          if (thenable._reactStatus === Pending) {
-            thenable._reactStatus = Resolved;
-            if (typeof resolvedValue === "object" && resolvedValue !== null) {
-              // If the `default` property is not empty, assume it's the result
-              // of an async import() and use that. Otherwise, use the
-              // resolved value itself.
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                defaultExport !== undefined && defaultExport !== null
-                  ? defaultExport
-                  : resolvedValue;
-            } else {
-              resolvedValue = resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          if (thenable._reactStatus === Pending) {
-            thenable._reactStatus = Rejected;
-            thenable._reactResult = error;
-          }
-        }
-      );
-      throw thenable;
-    }
-  }
-}
-
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 
 var didWarnAboutBadClass = void 0;
-var didWarnAboutGetDerivedStateOnFunctionalComponent = void 0;
-var didWarnAboutStatelessRefs = void 0;
+var didWarnAboutContextTypeOnFunctionComponent = void 0;
+var didWarnAboutGetDerivedStateOnFunctionComponent = void 0;
+var didWarnAboutFunctionRefs = void 0;
+var didWarnAboutReassigningProps = void 0;
 
 {
   didWarnAboutBadClass = {};
-  didWarnAboutGetDerivedStateOnFunctionalComponent = {};
-  didWarnAboutStatelessRefs = {};
+  didWarnAboutContextTypeOnFunctionComponent = {};
+  didWarnAboutGetDerivedStateOnFunctionComponent = {};
+  didWarnAboutFunctionRefs = {};
+  didWarnAboutReassigningProps = false;
 }
 
 function reconcileChildren(
@@ -10324,47 +11114,249 @@ function reconcileChildren(
   }
 }
 
+function forceUnmountCurrentAndReconcile(
+  current$$1,
+  workInProgress,
+  nextChildren,
+  renderExpirationTime
+) {
+  // This function is fork of reconcileChildren. It's used in cases where we
+  // want to reconcile without matching against the existing set. This has the
+  // effect of all current children being unmounted; even if the type and key
+  // are the same, the old child is unmounted and a new child is created.
+  //
+  // To do this, we're going to go through the reconcile algorithm twice. In
+  // the first pass, we schedule a deletion for all the current children by
+  // passing null.
+  workInProgress.child = reconcileChildFibers(
+    workInProgress,
+    current$$1.child,
+    null,
+    renderExpirationTime
+  );
+  // In the second pass, we mount the new children. The trick here is that we
+  // pass null in place of where we usually pass the current child set. This has
+  // the effect of remounting all children regardless of whether their their
+  // identity matches.
+  workInProgress.child = reconcileChildFibers(
+    workInProgress,
+    null,
+    nextChildren,
+    renderExpirationTime
+  );
+}
+
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  var render = type.render;
-  var ref = workInProgress.ref;
-  if (hasContextChanged()) {
-    // Normally we can bail out on props equality but if context has changed
-    // we don't do the bailout and we have to reuse existing props instead.
-  } else if (workInProgress.memoizedProps === nextProps) {
-    var currentRef = current$$1 !== null ? current$$1.ref : null;
-    if (ref === currentRef) {
-      return bailoutOnAlreadyFinishedWork(
-        current$$1,
-        workInProgress,
-        renderExpirationTime
-      );
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
     }
   }
 
+  var render = Component.render;
+  var ref = workInProgress.ref;
+
+  // The rest is a fork of updateFunctionComponent
   var nextChildren = void 0;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(current$$1, workInProgress, renderExpirationTime);
   {
     ReactCurrentOwner$3.current = workInProgress;
     setCurrentPhase("render");
     nextChildren = render(nextProps, ref);
     setCurrentPhase(null);
   }
+  nextChildren = finishHooks(render, nextProps, nextChildren, ref);
 
+  // React DevTools reads this flag.
+  workInProgress.effectTag |= PerformedWork;
   reconcileChildren(
     current$$1,
     workInProgress,
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (current$$1 === null) {
+    var type = Component.type;
+    if (
+      isSimpleFunctionComponent(type) &&
+      Component.compare === null &&
+      // SimpleMemoComponent codepath doesn't resolve outer props either.
+      Component.defaultProps === undefined
+    ) {
+      // If this is a plain function component without default props,
+      // and with only the default shallow comparison, we upgrade it
+      // to a SimpleMemoComponent to allow fast path updates.
+      workInProgress.tag = SimpleMemoComponent;
+      workInProgress.type = type;
+      {
+        validateFunctionComponentInDev(workInProgress, type);
+      }
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        type,
+        nextProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    {
+      var innerPropTypes = type.propTypes;
+      if (innerPropTypes) {
+        // Inner memo component props aren't currently validated in createElement.
+        // We could move it there, but we'd still need this for lazy code path.
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(type),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+    var child = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    child.ref = workInProgress.ref;
+    child.return = workInProgress;
+    workInProgress.child = child;
+    return child;
+  }
+  {
+    var _type = Component.type;
+    var _innerPropTypes = _type.propTypes;
+    if (_innerPropTypes) {
+      // Inner memo component props aren't currently validated in createElement.
+      // We could move it there, but we'd still need this for lazy code path.
+      checkPropTypes(
+        _innerPropTypes,
+        nextProps, // Resolved props
+        "prop",
+        getComponentName(_type),
+        getCurrentFiberStackInDev
+      );
+    }
+  }
+  var currentChild = current$$1.child; // This is always exactly one child
+  if (updateExpirationTime < renderExpirationTime) {
+    // This will be the props with resolved defaultProps,
+    // unlike current.memoizedProps which will be the unresolved ones.
+    var prevProps = currentChild.memoizedProps;
+    // Default to shallow comparison
+    var compare = Component.compare;
+    compare = compare !== null ? compare : shallowEqual;
+    if (
+      compare(prevProps, nextProps) &&
+      current$$1.ref === workInProgress.ref
+    ) {
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    }
+  }
+  // React DevTools reads this flag.
+  workInProgress.effectTag |= PerformedWork;
+  var newChild = createWorkInProgress(
+    currentChild,
+    nextProps,
+    renderExpirationTime
+  );
+  newChild.ref = workInProgress.ref;
+  newChild.return = workInProgress;
+  workInProgress.child = newChild;
+  return newChild;
+}
+
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var outerMemoType = workInProgress.elementType;
+      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
+        // We warn when you define propTypes on lazy()
+        // so let's just skip over it to find memo() outer wrapper.
+        // Inner props for memo are validated later.
+        outerMemoType = refineResolvedLazyComponent(outerMemoType);
+      }
+      var outerPropTypes = outerMemoType && outerMemoType.propTypes;
+      if (outerPropTypes) {
+        checkPropTypes(
+          outerPropTypes,
+          nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
+          "prop",
+          getComponentName(outerMemoType),
+          getCurrentFiberStackInDev
+        );
+      }
+      // Inner propTypes will be validated in the function component path.
+    }
+  }
+  if (current$$1 !== null && updateExpirationTime < renderExpirationTime) {
+    var prevProps = current$$1.memoizedProps;
+    if (
+      shallowEqual(prevProps, nextProps) &&
+      current$$1.ref === workInProgress.ref
+    ) {
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    }
+  }
+  return updateFunctionComponent(
+    current$$1,
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
+  );
+}
+
 function updateFragment(current$$1, workInProgress, renderExpirationTime) {
   var nextChildren = workInProgress.pendingProps;
   reconcileChildren(
@@ -10373,7 +11365,6 @@ function updateFragment(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextChildren);
   return workInProgress.child;
 }
 
@@ -10385,7 +11376,6 @@ function updateMode(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextChildren);
   return workInProgress.child;
 }
 
@@ -10401,7 +11391,6 @@ function updateProfiler(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10416,24 +11405,43 @@ function markRef(current$$1, workInProgress) {
   }
 }
 
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
   nextProps,
   renderExpirationTime
 ) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+  }
+
   var unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
   var context = getMaskedContext(workInProgress, unmaskedContext);
 
   var nextChildren = void 0;
   prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(current$$1, workInProgress, renderExpirationTime);
   {
     ReactCurrentOwner$3.current = workInProgress;
     setCurrentPhase("render");
     nextChildren = Component(nextProps, context);
     setCurrentPhase(null);
   }
+  nextChildren = finishHooks(Component, nextProps, nextChildren, context);
 
   // React DevTools reads this flag.
   workInProgress.effectTag |= PerformedWork;
@@ -10443,7 +11451,6 @@ function updateFunctionalComponent(
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10454,6 +11461,23 @@ function updateClassComponent(
   nextProps,
   renderExpirationTime
 ) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+      if (innerPropTypes) {
+        checkPropTypes(
+          innerPropTypes,
+          nextProps, // Resolved props
+          "prop",
+          getComponentName(Component),
+          getCurrentFiberStackInDev
+        );
+      }
+    }
+  }
+
   // Push context providers early to prevent context stack mismatches.
   // During mounting we don't know the child context yet as the instance doesn't exist.
   // We will invalidate the child context in finishClassComponent() right after rendering.
@@ -10466,32 +11490,41 @@ function updateClassComponent(
   }
   prepareToReadContext(workInProgress, renderExpirationTime);
 
+  var instance = workInProgress.stateNode;
   var shouldUpdate = void 0;
-  if (current$$1 === null) {
-    if (workInProgress.stateNode === null) {
-      // In the initial pass we might need to construct the instance.
-      constructClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-      mountClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-      shouldUpdate = true;
-    } else {
-      // In a resume, we'll already have an instance we can reuse.
-      shouldUpdate = resumeMountClassInstance(
-        workInProgress,
-        Component,
-        nextProps,
-        renderExpirationTime
-      );
-    }
+  if (instance === null) {
+    if (current$$1 !== null) {
+      // An class component without an instance only mounts if it suspended
+      // inside a non- concurrent tree, in an inconsistent state. We want to
+      // tree it like a new mount, even though an empty version of it already
+      // committed. Disconnect the alternate pointers.
+      current$$1.alternate = null;
+      workInProgress.alternate = null;
+      // Since this is conceptually a new fiber, schedule a Placement effect
+      workInProgress.effectTag |= Placement;
+    }
+    // In the initial pass we might need to construct the instance.
+    constructClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
+    mountClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
+    shouldUpdate = true;
+  } else if (current$$1 === null) {
+    // In a resume, we'll already have an instance we can reuse.
+    shouldUpdate = resumeMountClassInstance(
+      workInProgress,
+      Component,
+      nextProps,
+      renderExpirationTime
+    );
   } else {
     shouldUpdate = updateClassInstance(
       current$$1,
@@ -10501,7 +11534,7 @@ function updateClassComponent(
       renderExpirationTime
     );
   }
-  return finishClassComponent(
+  var nextUnitOfWork = finishClassComponent(
     current$$1,
     workInProgress,
     Component,
@@ -10509,6 +11542,21 @@ function updateClassComponent(
     hasContext,
     renderExpirationTime
   );
+  {
+    var inst = workInProgress.stateNode;
+    if (inst.props !== nextProps) {
+      !didWarnAboutReassigningProps
+        ? warning$1(
+            false,
+            "It looks like %s is reassigning its own `this.props` while rendering. " +
+              "This is not supported and can lead to confusing bugs.",
+            getComponentName(workInProgress.type) || "a component"
+          )
+        : void 0;
+      didWarnAboutReassigningProps = true;
+    }
+  }
+  return nextUnitOfWork;
 }
 
 function finishClassComponent(
@@ -10544,8 +11592,7 @@ function finishClassComponent(
   var nextChildren = void 0;
   if (
     didCaptureError &&
-    (!enableGetDerivedStateFromCatch ||
-      typeof Component.getDerivedStateFromCatch !== "function")
+    typeof Component.getDerivedStateFromError !== "function"
   ) {
     // If we captured an error, but getDerivedStateFrom catch is not defined,
     // unmount all the children. componentDidCatch will schedule an update to
@@ -10575,24 +11622,28 @@ function finishClassComponent(
   // React DevTools reads this flag.
   workInProgress.effectTag |= PerformedWork;
   if (current$$1 !== null && didCaptureError) {
-    // If we're recovering from an error, reconcile twice: first to delete
-    // all the existing children.
-    reconcileChildren(current$$1, workInProgress, null, renderExpirationTime);
-    workInProgress.child = null;
-    // Now we can continue reconciling like normal. This has the effect of
-    // remounting all children regardless of whether their their
-    // identity matches.
+    // If we're recovering from an error, reconcile without reusing any of
+    // the existing children. Conceptually, the normal children and the children
+    // that are shown on error are two different sets, so we shouldn't reuse
+    // normal children even if their identities match.
+    forceUnmountCurrentAndReconcile(
+      current$$1,
+      workInProgress,
+      nextChildren,
+      renderExpirationTime
+    );
+  } else {
+    reconcileChildren(
+      current$$1,
+      workInProgress,
+      nextChildren,
+      renderExpirationTime
+    );
   }
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
-  // Memoize props and state using the values we just used to render.
+
+  // Memoize state using the values we just used to render.
   // TODO: Restructure so we never read values from the instance.
-  memoizeState(workInProgress, instance.state);
-  memoizeProps(workInProgress, instance.props);
+  workInProgress.memoizedState = instance.state;
 
   // The context might have changed so we need to recalculate it.
   if (hasContext) {
@@ -10721,12 +11772,11 @@ function updateHostComponent(current$$1, workInProgress, renderExpirationTime) {
   // Check the host config to see if the children are offscreen/hidden.
   if (
     renderExpirationTime !== Never &&
-    workInProgress.mode & AsyncMode &&
+    workInProgress.mode & ConcurrentMode &&
     shouldDeprioritizeSubtree(type, nextProps)
   ) {
     // Schedule this fiber to re-render at offscreen priority. Then bailout.
     workInProgress.expirationTime = Never;
-    workInProgress.memoizedProps = nextProps;
     return null;
   }
 
@@ -10736,7 +11786,6 @@ function updateHostComponent(current$$1, workInProgress, renderExpirationTime) {
     nextChildren,
     renderExpirationTime
   );
-  memoizeProps(workInProgress, nextProps);
   return workInProgress.child;
 }
 
@@ -10744,97 +11793,203 @@ function updateHostText(current$$1, workInProgress) {
   if (current$$1 === null) {
     tryToClaimNextHydratableInstance(workInProgress);
   }
-  var nextProps = workInProgress.pendingProps;
-  memoizeProps(workInProgress, nextProps);
   // Nothing to do here. This is terminal. We'll do the completion step
   // immediately after.
   return null;
 }
 
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    // Resolve default props. Taken from ReactElement
-    var props = Object.assign({}, baseProps);
-    var defaultProps = Component.defaultProps;
-    for (var propName in defaultProps) {
-      if (props[propName] === undefined) {
-        props[propName] = defaultProps[propName];
+function mountLazyComponent(
+  _current,
+  workInProgress,
+  elementType,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (_current !== null) {
+    // An lazy component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
+  }
+
+  var props = workInProgress.pendingProps;
+  // We can't start a User Timing measurement with correct label yet.
+  // Cancel and resume right after we know the tag.
+  cancelWorkTimer(workInProgress);
+  var Component = readLazyComponentType(elementType);
+  // Store the unwrapped component in the type.
+  workInProgress.type = Component;
+  var resolvedTag = (workInProgress.tag = resolveLazyComponentTag(Component));
+  startWorkTimer(workInProgress);
+  var resolvedProps = resolveDefaultProps(Component, props);
+  var child = void 0;
+  switch (resolvedTag) {
+    case FunctionComponent: {
+      child = updateFunctionComponent(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case ClassComponent: {
+      child = updateClassComponent(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case ForwardRef: {
+      child = updateForwardRef(
+        null,
+        workInProgress,
+        Component,
+        resolvedProps,
+        renderExpirationTime
+      );
+      break;
+    }
+    case MemoComponent: {
+      {
+        if (workInProgress.type !== workInProgress.elementType) {
+          var outerPropTypes = Component.propTypes;
+          if (outerPropTypes) {
+            checkPropTypes(
+              outerPropTypes,
+              resolvedProps, // Resolved for outer only
+              "prop",
+              getComponentName(Component),
+              getCurrentFiberStackInDev
+            );
+          }
+        }
       }
+      child = updateMemoComponent(
+        null,
+        workInProgress,
+        Component,
+        resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too
+        updateExpirationTime,
+        renderExpirationTime
+      );
+      break;
+    }
+    default: {
+      var hint = "";
+      {
+        if (
+          Component !== null &&
+          typeof Component === "object" &&
+          Component.$$typeof === REACT_LAZY_TYPE
+        ) {
+          hint = " Did you wrap a component in React.lazy() more than once?";
+        }
+      }
+      // This message intentionally doesn't mention ForwardRef or MemoComponent
+      // because the fact that it's a separate type of work is an
+      // implementation detail.
+      invariant(
+        false,
+        "Element type is invalid. Received a promise that resolves to: %s. " +
+          "Lazy element type must resolve to a class or function.%s",
+        Component,
+        hint
+      );
     }
-    return props;
   }
-  return baseProps;
+  return child;
 }
 
-function mountIndeterminateComponent(
-  current$$1,
+function mountIncompleteClassComponent(
+  _current,
   workInProgress,
   Component,
+  nextProps,
   renderExpirationTime
 ) {
-  invariant(
-    current$$1 === null,
-    "An indeterminate component should never have mounted. This error is " +
-      "likely caused by a bug in React. Please file an issue."
+  if (_current !== null) {
+    // An incomplete component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
+  }
+
+  // Promote the fiber to a class and try rendering again.
+  workInProgress.tag = ClassComponent;
+
+  // The rest of this function is a fork of `updateClassComponent`
+
+  // Push context providers early to prevent context stack mismatches.
+  // During mounting we don't know the child context yet as the instance doesn't exist.
+  // We will invalidate the child context in finishClassComponent() right after rendering.
+  var hasContext = void 0;
+  if (isContextProvider(Component)) {
+    hasContext = true;
+    pushContextProvider(workInProgress);
+  } else {
+    hasContext = false;
+  }
+  prepareToReadContext(workInProgress, renderExpirationTime);
+
+  constructClassInstance(
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
+  );
+  mountClassInstance(
+    workInProgress,
+    Component,
+    nextProps,
+    renderExpirationTime
   );
 
-  var props = workInProgress.pendingProps;
-  if (
-    typeof Component === "object" &&
-    Component !== null &&
-    typeof Component.then === "function"
-  ) {
-    Component = readLazyComponentType(Component);
-    var resolvedTag = (workInProgress.tag = resolveLazyComponentTag(
-      workInProgress,
-      Component
-    ));
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (resolvedTag) {
-      case FunctionalComponentLazy: {
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      case ClassComponentLazy: {
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      case ForwardRefLazy: {
-        return updateForwardRef(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      }
-      default: {
-        // This message intentionally doesn't metion ForwardRef because the
-        // fact that it's a separate type of work is an implementation detail.
-        invariant(
-          false,
-          "Element type is invalid. Received a promise that resolves to: %s. " +
-            "Promise elements must resolve to a class or function.",
-          Component
-        );
-      }
-    }
+  return finishClassComponent(
+    null,
+    workInProgress,
+    Component,
+    true,
+    hasContext,
+    renderExpirationTime
+  );
+}
+
+function mountIndeterminateComponent(
+  _current,
+  workInProgress,
+  Component,
+  renderExpirationTime
+) {
+  if (_current !== null) {
+    // An indeterminate component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null;
+    // Since this is conceptually a new fiber, schedule a Placement effect
+    workInProgress.effectTag |= Placement;
   }
 
+  var props = workInProgress.pendingProps;
   var unmaskedContext = getUnmaskedContext(workInProgress, Component, false);
   var context = getMaskedContext(workInProgress, unmaskedContext);
 
   prepareToReadContext(workInProgress, renderExpirationTime);
+  prepareToUseHooks(null, workInProgress, renderExpirationTime);
 
   var value = void 0;
 
@@ -10876,6 +12031,9 @@ function mountIndeterminateComponent(
     // Proceed under the assumption that this is a class instance
     workInProgress.tag = ClassComponent;
 
+    // Throw out any hooks that were used.
+    resetHooks();
+
     // Push context providers early to prevent context stack mismatches.
     // During mounting we don't know the child context yet as the instance doesn't exist.
     // We will invalidate the child context in finishClassComponent() right after rendering.
@@ -10903,7 +12061,7 @@ function mountIndeterminateComponent(
     adoptClassInstance(workInProgress, value);
     mountClassInstance(workInProgress, Component, props, renderExpirationTime);
     return finishClassComponent(
-      current$$1,
+      null,
       workInProgress,
       Component,
       true,
@@ -10911,125 +12069,338 @@ function mountIndeterminateComponent(
       renderExpirationTime
     );
   } else {
-    // Proceed under the assumption that this is a functional component
-    workInProgress.tag = FunctionalComponent;
+    // Proceed under the assumption that this is a function component
+    workInProgress.tag = FunctionComponent;
+    value = finishHooks(Component, props, value, context);
+    reconcileChildren(null, workInProgress, value, renderExpirationTime);
     {
-      if (Component) {
-        !!Component.childContextTypes
-          ? warningWithoutStack$1(
-              false,
-              "%s(...): childContextTypes cannot be defined on a functional component.",
-              Component.displayName || Component.name || "Component"
-            )
-          : void 0;
-      }
-      if (workInProgress.ref !== null) {
-        var info = "";
-        var ownerName = getCurrentFiberOwnerNameInDevOrNull();
-        if (ownerName) {
-          info += "\n\nCheck the render method of `" + ownerName + "`.";
-        }
+      validateFunctionComponentInDev(workInProgress, Component);
+    }
+    return workInProgress.child;
+  }
+}
 
-        var warningKey = ownerName || workInProgress._debugID || "";
-        var debugSource = workInProgress._debugSource;
-        if (debugSource) {
-          warningKey = debugSource.fileName + ":" + debugSource.lineNumber;
-        }
-        if (!didWarnAboutStatelessRefs[warningKey]) {
-          didWarnAboutStatelessRefs[warningKey] = true;
-          warning$1(
-            false,
-            "Stateless function components cannot be given refs. " +
-              "Attempts to access this ref will fail.%s",
-            info
-          );
-        }
-      }
+function validateFunctionComponentInDev(workInProgress, Component) {
+  if (Component) {
+    !!Component.childContextTypes
+      ? warningWithoutStack$1(
+          false,
+          "%s(...): childContextTypes cannot be defined on a function component.",
+          Component.displayName || Component.name || "Component"
+        )
+      : void 0;
+  }
+  if (workInProgress.ref !== null) {
+    var info = "";
+    var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+    if (ownerName) {
+      info += "\n\nCheck the render method of `" + ownerName + "`.";
+    }
 
-      if (typeof Component.getDerivedStateFromProps === "function") {
-        var _componentName = getComponentName(Component) || "Unknown";
+    var warningKey = ownerName || workInProgress._debugID || "";
+    var debugSource = workInProgress._debugSource;
+    if (debugSource) {
+      warningKey = debugSource.fileName + ":" + debugSource.lineNumber;
+    }
+    if (!didWarnAboutFunctionRefs[warningKey]) {
+      didWarnAboutFunctionRefs[warningKey] = true;
+      warning$1(
+        false,
+        "Function components cannot be given refs. " +
+          "Attempts to access this ref will fail.%s",
+        info
+      );
+    }
+  }
 
-        if (!didWarnAboutGetDerivedStateOnFunctionalComponent[_componentName]) {
-          warningWithoutStack$1(
-            false,
-            "%s: Stateless functional components do not support getDerivedStateFromProps.",
-            _componentName
-          );
-          didWarnAboutGetDerivedStateOnFunctionalComponent[
-            _componentName
-          ] = true;
-        }
-      }
+  if (typeof Component.getDerivedStateFromProps === "function") {
+    var componentName = getComponentName(Component) || "Unknown";
+
+    if (!didWarnAboutGetDerivedStateOnFunctionComponent[componentName]) {
+      warningWithoutStack$1(
+        false,
+        "%s: Function components do not support getDerivedStateFromProps.",
+        componentName
+      );
+      didWarnAboutGetDerivedStateOnFunctionComponent[componentName] = true;
+    }
+  }
+
+  if (
+    typeof Component.contextType === "object" &&
+    Component.contextType !== null
+  ) {
+    var _componentName = getComponentName(Component) || "Unknown";
+
+    if (!didWarnAboutContextTypeOnFunctionComponent[_componentName]) {
+      warningWithoutStack$1(
+        false,
+        "%s: Function components do not support contextType.",
+        _componentName
+      );
+      didWarnAboutContextTypeOnFunctionComponent[_componentName] = true;
     }
-    reconcileChildren(current$$1, workInProgress, value, renderExpirationTime);
-    memoizeProps(workInProgress, props);
-    return workInProgress.child;
   }
 }
 
-function updatePlaceholderComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
   renderExpirationTime
 ) {
-  if (enableSuspense) {
-    var nextProps = workInProgress.pendingProps;
-
-    // Check if we already attempted to render the normal state. If we did,
-    // and we timed out, render the placeholder state.
-    var alreadyCaptured = (workInProgress.effectTag & DidCapture) === NoEffect;
-
-    var nextDidTimeout = void 0;
-    if (current$$1 !== null && workInProgress.updateQueue !== null) {
-      // We're outside strict mode. Something inside this Placeholder boundary
-      // suspended during the last commit. Switch to the placholder.
-      workInProgress.updateQueue = null;
-      nextDidTimeout = true;
-      // If we're recovering from an error, reconcile twice: first to delete
-      // all the existing children.
-      reconcileChildren(current$$1, workInProgress, null, renderExpirationTime);
-      current$$1.child = null;
-      // Now we can continue reconciling like normal. This has the effect of
-      // remounting all children regardless of whether their their
-      // identity matches.
+  var mode = workInProgress.mode;
+  var nextProps = workInProgress.pendingProps;
+
+  // We should attempt to render the primary children unless this boundary
+  // already suspended during this render (`alreadyCaptured` is true).
+  var nextState = workInProgress.memoizedState;
+
+  var nextDidTimeout = void 0;
+  if ((workInProgress.effectTag & DidCapture) === NoEffect) {
+    // This is the first attempt.
+    nextState = null;
+    nextDidTimeout = false;
+  } else {
+    // Something in this boundary's subtree already suspended. Switch to
+    // rendering the fallback children.
+    nextState = {
+      timedOutAt: nextState !== null ? nextState.timedOutAt : NoWork
+    };
+    nextDidTimeout = true;
+    workInProgress.effectTag &= ~DidCapture;
+  }
+
+  // This next part is a bit confusing. If the children timeout, we switch to
+  // showing the fallback children in place of the "primary" children.
+  // However, we don't want to delete the primary children because then their
+  // state will be lost (both the React state and the host state, e.g.
+  // uncontrolled form inputs). Instead we keep them mounted and hide them.
+  // Both the fallback children AND the primary children are rendered at the
+  // same time. Once the primary children are un-suspended, we can delete
+  // the fallback children — don't need to preserve their state.
+  //
+  // The two sets of children are siblings in the host environment, but
+  // semantically, for purposes of reconciliation, they are two separate sets.
+  // So we store them using two fragment fibers.
+  //
+  // However, we want to avoid allocating extra fibers for every placeholder.
+  // They're only necessary when the children time out, because that's the
+  // only time when both sets are mounted.
+  //
+  // So, the extra fragment fibers are only used if the children time out.
+  // Otherwise, we render the primary children directly. This requires some
+  // custom reconciliation logic to preserve the state of the primary
+  // children. It's essentially a very basic form of re-parenting.
+
+  // `child` points to the child fiber. In the normal case, this is the first
+  // fiber of the primary children set. In the timed-out case, it's a
+  // a fragment fiber containing the primary children.
+  var child = void 0;
+  // `next` points to the next fiber React should render. In the normal case,
+  // it's the same as `child`: the first fiber of the primary children set.
+  // In the timed-out case, it's a fragment fiber containing the *fallback*
+  // children -- we skip over the primary children entirely.
+  var next = void 0;
+  if (current$$1 === null) {
+    // This is the initial mount. This branch is pretty simple because there's
+    // no previous state that needs to be preserved.
+    if (nextDidTimeout) {
+      // Mount separate fragments for primary and fallback children.
+      var nextFallbackChildren = nextProps.fallback;
+      var primaryChildFragment = createFiberFromFragment(
+        null,
+        mode,
+        NoWork,
+        null
+      );
+
+      if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+        // Outside of concurrent mode, we commit the effects from the
+        var progressedState = workInProgress.memoizedState;
+        var progressedPrimaryChild =
+          progressedState !== null
+            ? workInProgress.child.child
+            : workInProgress.child;
+        primaryChildFragment.child = progressedPrimaryChild;
+      }
+
+      var fallbackChildFragment = createFiberFromFragment(
+        nextFallbackChildren,
+        mode,
+        renderExpirationTime,
+        null
+      );
+      primaryChildFragment.sibling = fallbackChildFragment;
+      child = primaryChildFragment;
+      // Skip the primary children, and continue working on the
+      // fallback children.
+      next = fallbackChildFragment;
+      child.return = next.return = workInProgress;
     } else {
-      nextDidTimeout = !alreadyCaptured;
+      // Mount the primary children without an intermediate fragment fiber.
+      var nextPrimaryChildren = nextProps.children;
+      child = next = mountChildFibers(
+        workInProgress,
+        null,
+        nextPrimaryChildren,
+        renderExpirationTime
+      );
     }
+  } else {
+    // This is an update. This branch is more complicated because we need to
+    // ensure the state of the primary children is preserved.
+    var prevState = current$$1.memoizedState;
+    var prevDidTimeout = prevState !== null;
+    if (prevDidTimeout) {
+      // The current tree already timed out. That means each child set is
+      var currentPrimaryChildFragment = current$$1.child;
+      var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;
+      if (nextDidTimeout) {
+        // Still timed out. Reuse the current primary children by cloning
+        // its fragment. We're going to skip over these entirely.
+        var _nextFallbackChildren = nextProps.fallback;
+        var _primaryChildFragment = createWorkInProgress(
+          currentPrimaryChildFragment,
+          currentPrimaryChildFragment.pendingProps,
+          NoWork
+        );
+
+        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+          // Outside of concurrent mode, we commit the effects from the
+          var _progressedState = workInProgress.memoizedState;
+          var _progressedPrimaryChild =
+            _progressedState !== null
+              ? workInProgress.child.child
+              : workInProgress.child;
+          if (_progressedPrimaryChild !== currentPrimaryChildFragment.child) {
+            _primaryChildFragment.child = _progressedPrimaryChild;
+          }
+        }
+
+        // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var treeBaseDuration = 0;
+          var hiddenChild = _primaryChildFragment.child;
+          while (hiddenChild !== null) {
+            treeBaseDuration += hiddenChild.treeBaseDuration;
+            hiddenChild = hiddenChild.sibling;
+          }
+          _primaryChildFragment.treeBaseDuration = treeBaseDuration;
+        }
+
+        // Clone the fallback child fragment, too. These we'll continue
+        // working on.
+        var _fallbackChildFragment = (_primaryChildFragment.sibling = createWorkInProgress(
+          currentFallbackChildFragment,
+          _nextFallbackChildren,
+          currentFallbackChildFragment.expirationTime
+        ));
+        child = _primaryChildFragment;
+        _primaryChildFragment.childExpirationTime = NoWork;
+        // Skip the primary children, and continue working on the
+        // fallback children.
+        next = _fallbackChildFragment;
+        child.return = next.return = workInProgress;
+      } else {
+        // No longer suspended. Switch back to showing the primary children,
+        // and remove the intermediate fragment fiber.
+        var _nextPrimaryChildren = nextProps.children;
+        var currentPrimaryChild = currentPrimaryChildFragment.child;
+        var primaryChild = reconcileChildFibers(
+          workInProgress,
+          currentPrimaryChild,
+          _nextPrimaryChildren,
+          renderExpirationTime
+        );
+
+        // If this render doesn't suspend, we need to delete the fallback
+        // children. Wait until the complete phase, after we've confirmed the
+        // fallback is no longer needed.
+        // TODO: Would it be better to store the fallback fragment on
+        // the stateNode?
 
-    if ((workInProgress.mode & StrictMode) !== NoEffect) {
+        // Continue rendering the children, like we normally do.
+        child = next = primaryChild;
+      }
+    } else {
+      // The current tree has not already timed out. That means the primary
+      // children are not wrapped in a fragment fiber.
+      var _currentPrimaryChild = current$$1.child;
       if (nextDidTimeout) {
-        // If the timed-out view commits, schedule an update effect to record
-        // the committed time.
-        workInProgress.effectTag |= Update;
+        // Timed out. Wrap the children in a fragment fiber to keep them
+        // separate from the fallback children.
+        var _nextFallbackChildren2 = nextProps.fallback;
+        var _primaryChildFragment2 = createFiberFromFragment(
+          // It shouldn't matter what the pending props are because we aren't
+          // going to render this fragment.
+          null,
+          mode,
+          NoWork,
+          null
+        );
+        _primaryChildFragment2.child = _currentPrimaryChild;
+
+        // Even though we're creating a new fiber, there are no new children,
+        // because we're reusing an already mounted tree. So we don't need to
+        // schedule a placement.
+        // primaryChildFragment.effectTag |= Placement;
+
+        if ((workInProgress.mode & ConcurrentMode) === NoContext) {
+          // Outside of concurrent mode, we commit the effects from the
+          var _progressedState2 = workInProgress.memoizedState;
+          var _progressedPrimaryChild2 =
+            _progressedState2 !== null
+              ? workInProgress.child.child
+              : workInProgress.child;
+          _primaryChildFragment2.child = _progressedPrimaryChild2;
+        }
+
+        // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var _treeBaseDuration = 0;
+          var _hiddenChild = _primaryChildFragment2.child;
+          while (_hiddenChild !== null) {
+            _treeBaseDuration += _hiddenChild.treeBaseDuration;
+            _hiddenChild = _hiddenChild.sibling;
+          }
+          _primaryChildFragment2.treeBaseDuration = _treeBaseDuration;
+        }
+
+        // Create a fragment from the fallback children, too.
+        var _fallbackChildFragment2 = (_primaryChildFragment2.sibling = createFiberFromFragment(
+          _nextFallbackChildren2,
+          mode,
+          renderExpirationTime,
+          null
+        ));
+        _fallbackChildFragment2.effectTag |= Placement;
+        child = _primaryChildFragment2;
+        _primaryChildFragment2.childExpirationTime = NoWork;
+        // Skip the primary children, and continue working on the
+        // fallback children.
+        next = _fallbackChildFragment2;
+        child.return = next.return = workInProgress;
       } else {
-        // The state node points to the time at which placeholder timed out.
-        // We can clear it once we switch back to the normal children.
-        workInProgress.stateNode = null;
+        // Still haven't timed out.  Continue rendering the children, like we
+        // normally do.
+        var _nextPrimaryChildren2 = nextProps.children;
+        next = child = reconcileChildFibers(
+          workInProgress,
+          _currentPrimaryChild,
+          _nextPrimaryChildren2,
+          renderExpirationTime
+        );
       }
     }
-
-    // If the `children` prop is a function, treat it like a render prop.
-    // TODO: This is temporary until we finalize a lower level API.
-    var children = nextProps.children;
-    var nextChildren = void 0;
-    if (typeof children === "function") {
-      nextChildren = children(nextDidTimeout);
-    } else {
-      nextChildren = nextDidTimeout ? nextProps.fallback : children;
-    }
-
-    workInProgress.memoizedProps = nextProps;
-    workInProgress.memoizedState = nextDidTimeout;
-    reconcileChildren(
-      current$$1,
-      workInProgress,
-      nextChildren,
-      renderExpirationTime
-    );
-    return workInProgress.child;
-  } else {
-    return null;
   }
+
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = child;
+  return next;
 }
 
 function updatePortalComponent(
@@ -11051,7 +12422,6 @@ function updatePortalComponent(
       nextChildren,
       renderExpirationTime
     );
-    memoizeProps(workInProgress, nextChildren);
   } else {
     reconcileChildren(
       current$$1,
@@ -11059,7 +12429,6 @@ function updatePortalComponent(
       nextChildren,
       renderExpirationTime
     );
-    memoizeProps(workInProgress, nextChildren);
   }
   return workInProgress.child;
 }
@@ -11076,7 +12445,6 @@ function updateContextProvider(
   var oldProps = workInProgress.memoizedProps;
 
   var newValue = newProps.value;
-  workInProgress.memoizedProps = newProps;
 
   {
     var providerPropTypes = workInProgress.type.propTypes;
@@ -11128,12 +12496,40 @@ function updateContextProvider(
   return workInProgress.child;
 }
 
+var hasWarnedAboutUsingContextAsConsumer = false;
+
 function updateContextConsumer(
   current$$1,
   workInProgress,
   renderExpirationTime
 ) {
   var context = workInProgress.type;
+  // The logic below for Context differs depending on PROD or DEV mode. In
+  // DEV mode, we create a separate object for Context.Consumer that acts
+  // like a proxy to Context. This proxy object adds unnecessary code in PROD
+  // so we use the old behaviour (Context.Consumer references Context) to
+  // reduce size and overhead. The separate object references context via
+  // a property called "_context", which also gives us the ability to check
+  // in DEV mode if this property exists or not and warn if it does not.
+  {
+    if (context._context === undefined) {
+      // This may be because it's a Context (rather than a Consumer).
+      // Or it may be because it's older React where they're the same thing.
+      // We only want to warn if we're sure it's a new React.
+      if (context !== context.Consumer) {
+        if (!hasWarnedAboutUsingContextAsConsumer) {
+          hasWarnedAboutUsingContextAsConsumer = true;
+          warning$1(
+            false,
+            "Rendering <Context> directly is not supported and will be removed in " +
+              "a future major release. Did you mean to render <Context.Consumer> instead?"
+          );
+        }
+      }
+    } else {
+      context = context._context;
+    }
+  }
   var newProps = workInProgress.pendingProps;
   var render = newProps.children;
 
@@ -11167,29 +12563,9 @@ function updateContextConsumer(
     newChildren,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = newProps;
   return workInProgress.child;
 }
 
-/*
-  function reuseChildrenEffects(returnFiber : Fiber, firstChild : Fiber) {
-    let child = firstChild;
-    do {
-      // Ensure that the first and last effect of the parent corresponds
-      // to the children's first and last effect.
-      if (!returnFiber.firstEffect) {
-        returnFiber.firstEffect = child.firstEffect;
-      }
-      if (child.lastEffect) {
-        if (returnFiber.lastEffect) {
-          returnFiber.lastEffect.nextEffect = child.firstEffect;
-        }
-        returnFiber.lastEffect = child.lastEffect;
-      }
-    } while (child = child.sibling);
-  }
-  */
-
 function bailoutOnAlreadyFinishedWork(
   current$$1,
   workInProgress,
@@ -11209,10 +12585,7 @@ function bailoutOnAlreadyFinishedWork(
 
   // Check if the children have any pending work.
   var childExpirationTime = workInProgress.childExpirationTime;
-  if (
-    childExpirationTime === NoWork ||
-    childExpirationTime > renderExpirationTime
-  ) {
+  if (childExpirationTime < renderExpirationTime) {
     // The children don't have any work either. We can skip them.
     // TODO: Once we add back resuming, we should check if the children are
     // a work-in-progress set. If so, we need to transfer their effects.
@@ -11225,72 +12598,98 @@ function bailoutOnAlreadyFinishedWork(
   }
 }
 
-// TODO: Delete memoizeProps/State and move to reconcile/bailout instead
-function memoizeProps(workInProgress, nextProps) {
-  workInProgress.memoizedProps = nextProps;
-}
-
-function memoizeState(workInProgress, nextState) {
-  workInProgress.memoizedState = nextState;
-  // Don't reset the updateQueue, in case there are pending updates. Resetting
-  // is handled by processUpdateQueue.
-}
-
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
-  if (
-    !hasContextChanged() &&
-    (updateExpirationTime === NoWork ||
-      updateExpirationTime > renderExpirationTime)
-  ) {
-    // This fiber does not have any pending work. Bailout without entering
-    // the begin phase. There's still some bookkeeping we that needs to be done
-    // in this optimized path, mostly pushing stuff onto the stack.
-    switch (workInProgress.tag) {
-      case HostRoot:
-        pushHostRootContext(workInProgress);
-        resetHydrationState();
-        break;
-      case HostComponent:
-        pushHostContext(workInProgress);
-        break;
-      case ClassComponent: {
-        var Component = workInProgress.type;
-        if (isContextProvider(Component)) {
-          pushContextProvider(workInProgress);
+
+  if (current$$1 !== null) {
+    var oldProps = current$$1.memoizedProps;
+    var newProps = workInProgress.pendingProps;
+    if (
+      oldProps === newProps &&
+      !hasContextChanged() &&
+      updateExpirationTime < renderExpirationTime
+    ) {
+      // This fiber does not have any pending work. Bailout without entering
+      // the begin phase. There's still some bookkeeping we that needs to be done
+      // in this optimized path, mostly pushing stuff onto the stack.
+      switch (workInProgress.tag) {
+        case HostRoot:
+          pushHostRootContext(workInProgress);
+          resetHydrationState();
+          break;
+        case HostComponent:
+          pushHostContext(workInProgress);
+          break;
+        case ClassComponent: {
+          var Component = workInProgress.type;
+          if (isContextProvider(Component)) {
+            pushContextProvider(workInProgress);
+          }
+          break;
         }
-        break;
-      }
-      case ClassComponentLazy: {
-        var thenable = workInProgress.type;
-        var _Component = getResultFromResolvedThenable(thenable);
-        if (isContextProvider(_Component)) {
-          pushContextProvider(workInProgress);
+        case HostPortal:
+          pushHostContainer(
+            workInProgress,
+            workInProgress.stateNode.containerInfo
+          );
+          break;
+        case ContextProvider: {
+          var newValue = workInProgress.memoizedProps.value;
+          pushProvider(workInProgress, newValue);
+          break;
         }
-        break;
-      }
-      case HostPortal:
-        pushHostContainer(
-          workInProgress,
-          workInProgress.stateNode.containerInfo
-        );
-        break;
-      case ContextProvider: {
-        var newValue = workInProgress.memoizedProps.value;
-        pushProvider(workInProgress, newValue);
-        break;
-      }
-      case Profiler:
-        if (enableProfilerTimer) {
-          workInProgress.effectTag |= Update;
+        case Profiler:
+          if (enableProfilerTimer) {
+            workInProgress.effectTag |= Update;
+          }
+          break;
+        case SuspenseComponent: {
+          var state = workInProgress.memoizedState;
+          var didTimeout = state !== null;
+          if (didTimeout) {
+            // If this boundary is currently timed out, we need to decide
+            // whether to retry the primary children, or to skip over it and
+            // go straight to the fallback. Check the priority of the primary
+            var primaryChildFragment = workInProgress.child;
+            var primaryChildExpirationTime =
+              primaryChildFragment.childExpirationTime;
+            if (
+              primaryChildExpirationTime !== NoWork &&
+              primaryChildExpirationTime >= renderExpirationTime
+            ) {
+              // The primary children have pending work. Use the normal path
+              // to attempt to render the primary children again.
+              return updateSuspenseComponent(
+                current$$1,
+                workInProgress,
+                renderExpirationTime
+              );
+            } else {
+              // The primary children do not have pending work with sufficient
+              // priority. Bailout.
+              var child = bailoutOnAlreadyFinishedWork(
+                current$$1,
+                workInProgress,
+                renderExpirationTime
+              );
+              if (child !== null) {
+                // The fallback children have pending work. Skip over the
+                // primary children and work on the fallback.
+                return child.sibling;
+              } else {
+                return null;
+              }
+            }
+          }
+          break;
         }
-        break;
+      }
+      return bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
     }
-    return bailoutOnAlreadyFinishedWork(
-      current$$1,
-      workInProgress,
-      renderExpirationTime
-    );
   }
 
   // Before entering the begin phase, clear the expiration time.
@@ -11298,63 +12697,53 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
 
   switch (workInProgress.tag) {
     case IndeterminateComponent: {
-      var _Component3 = workInProgress.type;
+      var elementType = workInProgress.elementType;
       return mountIndeterminateComponent(
         current$$1,
         workInProgress,
-        _Component3,
+        elementType,
         renderExpirationTime
       );
     }
-    case FunctionalComponent: {
-      var _Component4 = workInProgress.type;
-      var _unresolvedProps = workInProgress.pendingProps;
-      return updateFunctionalComponent(
+    case LazyComponent: {
+      var _elementType = workInProgress.elementType;
+      return mountLazyComponent(
         current$$1,
         workInProgress,
-        _Component4,
-        _unresolvedProps,
+        _elementType,
+        updateExpirationTime,
         renderExpirationTime
       );
     }
-    case FunctionalComponentLazy: {
-      var _thenable2 = workInProgress.type;
-      var _Component5 = getResultFromResolvedThenable(_thenable2);
-      var _unresolvedProps2 = workInProgress.pendingProps;
-      var _child = updateFunctionalComponent(
+    case FunctionComponent: {
+      var _Component = workInProgress.type;
+      var unresolvedProps = workInProgress.pendingProps;
+      var resolvedProps =
+        workInProgress.elementType === _Component
+          ? unresolvedProps
+          : resolveDefaultProps(_Component, unresolvedProps);
+      return updateFunctionComponent(
         current$$1,
         workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, _unresolvedProps2),
+        _Component,
+        resolvedProps,
         renderExpirationTime
       );
-      workInProgress.memoizedProps = _unresolvedProps2;
-      return _child;
     }
     case ClassComponent: {
-      var _Component6 = workInProgress.type;
-      var _unresolvedProps3 = workInProgress.pendingProps;
+      var _Component2 = workInProgress.type;
+      var _unresolvedProps = workInProgress.pendingProps;
+      var _resolvedProps =
+        workInProgress.elementType === _Component2
+          ? _unresolvedProps
+          : resolveDefaultProps(_Component2, _unresolvedProps);
       return updateClassComponent(
         current$$1,
         workInProgress,
-        _Component6,
-        _unresolvedProps3,
-        renderExpirationTime
-      );
-    }
-    case ClassComponentLazy: {
-      var _thenable3 = workInProgress.type;
-      var _Component7 = getResultFromResolvedThenable(_thenable3);
-      var _unresolvedProps4 = workInProgress.pendingProps;
-      var _child2 = updateClassComponent(
-        current$$1,
-        workInProgress,
-        _Component7,
-        resolveDefaultProps(_Component7, _unresolvedProps4),
+        _Component2,
+        _resolvedProps,
         renderExpirationTime
       );
-      workInProgress.memoizedProps = _unresolvedProps4;
-      return _child2;
     }
     case HostRoot:
       return updateHostRoot(current$$1, workInProgress, renderExpirationTime);
@@ -11366,8 +12755,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
     case HostText:
       return updateHostText(current$$1, workInProgress);
-    case PlaceholderComponent:
-      return updatePlaceholderComponent(
+    case SuspenseComponent:
+      return updateSuspenseComponent(
         current$$1,
         workInProgress,
         renderExpirationTime
@@ -11380,27 +12769,19 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
     case ForwardRef: {
       var type = workInProgress.type;
+      var _unresolvedProps2 = workInProgress.pendingProps;
+      var _resolvedProps2 =
+        workInProgress.elementType === type
+          ? _unresolvedProps2
+          : resolveDefaultProps(type, _unresolvedProps2);
       return updateForwardRef(
         current$$1,
         workInProgress,
         type,
-        workInProgress.pendingProps,
+        _resolvedProps2,
         renderExpirationTime
       );
     }
-    case ForwardRefLazy:
-      var _thenable = workInProgress.type;
-      var _Component2 = getResultFromResolvedThenable(_thenable);
-      var unresolvedProps = workInProgress.pendingProps;
-      var child = updateForwardRef(
-        current$$1,
-        workInProgress,
-        _Component2,
-        resolveDefaultProps(_Component2, unresolvedProps),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = unresolvedProps;
-      return child;
     case Fragment:
       return updateFragment(current$$1, workInProgress, renderExpirationTime);
     case Mode:
@@ -11419,6 +12800,60 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
         workInProgress,
         renderExpirationTime
       );
+    case MemoComponent: {
+      var _type2 = workInProgress.type;
+      var _unresolvedProps3 = workInProgress.pendingProps;
+      // Resolve outer props first, then resolve inner props.
+      var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3);
+      {
+        if (workInProgress.type !== workInProgress.elementType) {
+          var outerPropTypes = _type2.propTypes;
+          if (outerPropTypes) {
+            checkPropTypes(
+              outerPropTypes,
+              _resolvedProps3, // Resolved for outer only
+              "prop",
+              getComponentName(_type2),
+              getCurrentFiberStackInDev
+            );
+          }
+        }
+      }
+      _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3);
+      return updateMemoComponent(
+        current$$1,
+        workInProgress,
+        _type2,
+        _resolvedProps3,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    case SimpleMemoComponent: {
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    }
+    case IncompleteClassComponent: {
+      var _Component3 = workInProgress.type;
+      var _unresolvedProps4 = workInProgress.pendingProps;
+      var _resolvedProps4 =
+        workInProgress.elementType === _Component3
+          ? _unresolvedProps4
+          : resolveDefaultProps(_Component3, _unresolvedProps4);
+      return mountIncompleteClassComponent(
+        current$$1,
+        workInProgress,
+        _Component3,
+        _resolvedProps4,
+        renderExpirationTime
+      );
+    }
     default:
       invariant(
         false,
@@ -11438,42 +12873,48 @@ function markRef$1(workInProgress) {
   workInProgress.effectTag |= Ref;
 }
 
-function appendAllChildren(parent, workInProgress) {
-  // We only have the top Fiber that was created but we need recurse down its
-  // children to find all the terminal nodes.
-  var node = workInProgress.child;
-  while (node !== null) {
-    if (node.tag === HostComponent || node.tag === HostText) {
-      appendInitialChild(parent, node.stateNode);
-    } else if (node.tag === HostPortal) {
-      // If we have a portal child, then we don't want to traverse
-      // down its children. Instead, we'll get insertions from each child in
-      // the portal directly.
-    } else if (node.child !== null) {
-      node.child.return = node;
-      node = node.child;
-      continue;
-    }
-    if (node === workInProgress) {
-      return;
-    }
-    while (node.sibling === null) {
-      if (node.return === null || node.return === workInProgress) {
-        return;
-      }
-      node = node.return;
-    }
-    node.sibling.return = node.return;
-    node = node.sibling;
-  }
-}
-
+var appendAllChildren = void 0;
 var updateHostContainer = void 0;
 var updateHostComponent$1 = void 0;
 var updateHostText$1 = void 0;
 if (supportsMutation) {
   // Mutation mode
 
+  appendAllChildren = function(
+    parent,
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
+  ) {
+    // We only have the top Fiber that was created but we need recurse down its
+    // children to find all the terminal nodes.
+    var node = workInProgress.child;
+    while (node !== null) {
+      if (node.tag === HostComponent || node.tag === HostText) {
+        appendInitialChild(parent, node.stateNode);
+      } else if (node.tag === HostPortal) {
+        // If we have a portal child, then we don't want to traverse
+        // down its children. Instead, we'll get insertions from each child in
+        // the portal directly.
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      if (node === workInProgress) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  };
+
   updateHostContainer = function(workInProgress) {
     // Noop
   };
@@ -11524,29 +12965,205 @@ if (supportsMutation) {
       markUpdate(workInProgress);
     }
   };
-} else if (supportsPersistence) {
-  // Persistent host tree mode
+} else if (supportsPersistence) {
+  // Persistent host tree mode
+
+  appendAllChildren = function(
+    parent,
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
+  ) {
+    // We only have the top Fiber that was created but we need recurse down its
+    // children to find all the terminal nodes.
+    var node = workInProgress.child;
+    while (node !== null) {
+      // eslint-disable-next-line no-labels
+      branches: if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var props = node.memoizedProps;
+          var type = node.type;
+          if (isHidden) {
+            // This child is inside a timed out tree. Hide it.
+            instance = cloneHiddenInstance(instance, type, props, node);
+          } else {
+            // This child was previously inside a timed out tree. If it was not
+            // updated during this render, it may need to be unhidden. Clone
+            // again to be sure.
+            instance = cloneUnhiddenInstance(instance, type, props, node);
+          }
+          node.stateNode = instance;
+        }
+        appendInitialChild(parent, instance);
+      } else if (node.tag === HostText) {
+        var _instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var text = node.memoizedProps;
+          var rootContainerInstance = getRootHostContainer();
+          var currentHostContext = getHostContext();
+          if (isHidden) {
+            _instance = createHiddenTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          } else {
+            _instance = createTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          }
+          node.stateNode = _instance;
+        }
+        appendInitialChild(parent, _instance);
+      } else if (node.tag === HostPortal) {
+        // If we have a portal child, then we don't want to traverse
+        // down its children. Instead, we'll get insertions from each child in
+        // the portal directly.
+      } else if (node.tag === SuspenseComponent) {
+        var current = node.alternate;
+        if (current !== null) {
+          var oldState = current.memoizedState;
+          var newState = node.memoizedState;
+          var oldIsHidden = oldState !== null;
+          var newIsHidden = newState !== null;
+          if (oldIsHidden !== newIsHidden) {
+            // The placeholder either just timed out or switched back to the normal
+            // children after having previously timed out. Toggle the visibility of
+            // the direct host children.
+            var primaryChildParent = newIsHidden ? node.child : node;
+            if (primaryChildParent !== null) {
+              appendAllChildren(parent, primaryChildParent, true, newIsHidden);
+            }
+            // eslint-disable-next-line no-labels
+            break branches;
+          }
+        }
+        if (node.child !== null) {
+          // Continue traversing like normal
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      // $FlowFixMe This is correct but Flow is confused by the labeled break.
+      node = node;
+      if (node === workInProgress) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  };
 
   // An unfortunate fork of appendAllChildren because we have two different parent types.
   var appendAllChildrenToContainer = function(
     containerChildSet,
-    workInProgress
+    workInProgress,
+    needsVisibilityToggle,
+    isHidden
   ) {
     // We only have the top Fiber that was created but we need recurse down its
     // children to find all the terminal nodes.
     var node = workInProgress.child;
     while (node !== null) {
-      if (node.tag === HostComponent || node.tag === HostText) {
-        appendChildToContainerChildSet(containerChildSet, node.stateNode);
+      // eslint-disable-next-line no-labels
+      branches: if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (needsVisibilityToggle) {
+          var props = node.memoizedProps;
+          var type = node.type;
+          if (isHidden) {
+            // This child is inside a timed out tree. Hide it.
+            instance = cloneHiddenInstance(instance, type, props, node);
+          } else {
+            // This child was previously inside a timed out tree. If it was not
+            // updated during this render, it may need to be unhidden. Clone
+            // again to be sure.
+            instance = cloneUnhiddenInstance(instance, type, props, node);
+          }
+          node.stateNode = instance;
+        }
+        appendChildToContainerChildSet(containerChildSet, instance);
+      } else if (node.tag === HostText) {
+        var _instance2 = node.stateNode;
+        if (needsVisibilityToggle) {
+          var text = node.memoizedProps;
+          var rootContainerInstance = getRootHostContainer();
+          var currentHostContext = getHostContext();
+          if (isHidden) {
+            _instance2 = createHiddenTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          } else {
+            _instance2 = createTextInstance(
+              text,
+              rootContainerInstance,
+              currentHostContext,
+              workInProgress
+            );
+          }
+          node.stateNode = _instance2;
+        }
+        appendChildToContainerChildSet(containerChildSet, _instance2);
       } else if (node.tag === HostPortal) {
         // If we have a portal child, then we don't want to traverse
         // down its children. Instead, we'll get insertions from each child in
         // the portal directly.
+      } else if (node.tag === SuspenseComponent) {
+        var current = node.alternate;
+        if (current !== null) {
+          var oldState = current.memoizedState;
+          var newState = node.memoizedState;
+          var oldIsHidden = oldState !== null;
+          var newIsHidden = newState !== null;
+          if (oldIsHidden !== newIsHidden) {
+            // The placeholder either just timed out or switched back to the normal
+            // children after having previously timed out. Toggle the visibility of
+            // the direct host children.
+            var primaryChildParent = newIsHidden ? node.child : node;
+            if (primaryChildParent !== null) {
+              appendAllChildrenToContainer(
+                containerChildSet,
+                primaryChildParent,
+                true,
+                newIsHidden
+              );
+            }
+            // eslint-disable-next-line no-labels
+            break branches;
+          }
+        }
+        if (node.child !== null) {
+          // Continue traversing like normal
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
       } else if (node.child !== null) {
         node.child.return = node;
         node = node.child;
         continue;
       }
+      // $FlowFixMe This is correct but Flow is confused by the labeled break.
+      node = node;
       if (node === workInProgress) {
         return;
       }
@@ -11569,7 +13186,7 @@ if (supportsMutation) {
       var container = portalOrRoot.containerInfo;
       var newChildSet = createContainerChildSet(container);
       // If children might have changed, we have to add them all to the set.
-      appendAllChildrenToContainer(newChildSet, workInProgress);
+      appendAllChildrenToContainer(newChildSet, workInProgress, false, false);
       portalOrRoot.pendingChildren = newChildSet;
       // Schedule an update on the container to swap out the container.
       markUpdate(workInProgress);
@@ -11642,7 +13259,7 @@ if (supportsMutation) {
       markUpdate(workInProgress);
     } else {
       // If children might have changed, we have to add them all to the set.
-      appendAllChildren(newInstance, workInProgress);
+      appendAllChildren(newInstance, workInProgress, false, false);
     }
   };
   updateHostText$1 = function(current, workInProgress, oldText, newText) {
@@ -11684,8 +13301,12 @@ function completeWork(current, workInProgress, renderExpirationTime) {
   var newProps = workInProgress.pendingProps;
 
   switch (workInProgress.tag) {
-    case FunctionalComponent:
-    case FunctionalComponentLazy:
+    case IndeterminateComponent:
+      break;
+    case LazyComponent:
+      break;
+    case SimpleMemoComponent:
+    case FunctionComponent:
       break;
     case ClassComponent: {
       var Component = workInProgress.type;
@@ -11694,13 +13315,6 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       }
       break;
     }
-    case ClassComponentLazy: {
-      var _Component = getResultFromResolvedThenable(workInProgress.type);
-      if (isContextProvider(_Component)) {
-        popContext(workInProgress);
-      }
-      break;
-    }
     case HostRoot: {
       popHostContainer(workInProgress);
       popTopLevelContextObject(workInProgress);
@@ -11776,7 +13390,7 @@ function completeWork(current, workInProgress, renderExpirationTime) {
             workInProgress
           );
 
-          appendAllChildren(instance, workInProgress);
+          appendAllChildren(instance, workInProgress, false, false);
 
           // Certain renderers require commit-time effects for initial mount.
           // (eg DOM renderer supports auto-focus for certain elements).
@@ -11837,10 +13451,54 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       break;
     }
     case ForwardRef:
-    case ForwardRefLazy:
       break;
-    case PlaceholderComponent:
+    case SuspenseComponent: {
+      var nextState = workInProgress.memoizedState;
+      if ((workInProgress.effectTag & DidCapture) !== NoEffect) {
+        // Something suspended. Re-render with the fallback children.
+        workInProgress.expirationTime = renderExpirationTime;
+        // Do not reset the effect list.
+        return workInProgress;
+      }
+
+      var nextDidTimeout = nextState !== null;
+      var prevDidTimeout = current !== null && current.memoizedState !== null;
+
+      if (current !== null && !nextDidTimeout && prevDidTimeout) {
+        // We just switched from the fallback to the normal children. Delete
+        // the fallback.
+        // TODO: Would it be better to store the fallback fragment on
+        var currentFallbackChild = current.child.sibling;
+        if (currentFallbackChild !== null) {
+          // Deletions go at the beginning of the return fiber's effect list
+          var first = workInProgress.firstEffect;
+          if (first !== null) {
+            workInProgress.firstEffect = currentFallbackChild;
+            currentFallbackChild.nextEffect = first;
+          } else {
+            workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChild;
+            currentFallbackChild.nextEffect = null;
+          }
+          currentFallbackChild.effectTag = Deletion;
+        }
+      }
+
+      // The children either timed out after previously being visible, or
+      // were restored after previously being hidden. Schedule an effect
+      // to update their visiblity.
+      if (
+        //
+        nextDidTimeout !== prevDidTimeout ||
+        // Outside concurrent mode, the primary children commit in an
+        // inconsistent state, even if they are hidden. So if they are hidden,
+        // we need to schedule an effect to re-hide them, just in case.
+        ((workInProgress.effectTag & ConcurrentMode) === NoContext &&
+          nextDidTimeout)
+      ) {
+        workInProgress.effectTag |= Update;
+      }
       break;
+    }
     case Fragment:
       break;
     case Mode:
@@ -11857,15 +13515,17 @@ function completeWork(current, workInProgress, renderExpirationTime) {
       break;
     case ContextConsumer:
       break;
-    // Error cases
-    case IndeterminateComponent:
-      invariant(
-        false,
-        "An indeterminate component should have become determinate before " +
-          "completing. This error is likely caused by a bug in React. Please " +
-          "file an issue."
-      );
-    // eslint-disable-next-line no-fallthrough
+    case MemoComponent:
+      break;
+    case IncompleteClassComponent: {
+      // Same as class component case. I put it down here so that the tags are
+      // sequential to ensure this switch is compiled to a jump table.
+      var _Component = workInProgress.type;
+      if (isContextProvider(_Component)) {
+        popContext(workInProgress);
+      }
+      break;
+    }
     default:
       invariant(
         false,
@@ -11877,6 +13537,17 @@ function completeWork(current, workInProgress, renderExpirationTime) {
   return null;
 }
 
+function shouldCaptureSuspense(current, workInProgress) {
+  // In order to capture, the Suspense component must have a fallback prop.
+  if (workInProgress.memoizedProps.fallback === undefined) {
+    return false;
+  }
+  // If it was the primary children that just suspended, capture and render the
+  // fallback. Otherwise, don't capture and bubble to the next boundary.
+  var nextState = workInProgress.memoizedState;
+  return nextState === null;
+}
+
 // Module provided by RN:
 /**
  * Intercept lifecycle errors and ensure they are shown with the correct stack
@@ -11993,8 +13664,6 @@ function logCapturedError(capturedError) {
   }
 }
 
-var emptyObject$1 = {};
-
 var didWarnAboutUndefinedSnapshotBeforeUpdate = null;
 {
   didWarnAboutUndefinedSnapshotBeforeUpdate = new Set();
@@ -12079,19 +13748,69 @@ function safelyDetachRef(current$$1) {
   }
 }
 
+function safelyCallDestroy(current$$1, destroy) {
+  {
+    invokeGuardedCallback(null, destroy, null);
+    if (hasCaughtError()) {
+      var error = clearCaughtError();
+      captureCommitPhaseError(current$$1, error);
+    }
+  }
+}
+
 function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent: {
+      commitHookEffectList(UnmountSnapshot, NoEffect$1, finishedWork);
+      return;
+    }
+    case ClassComponent: {
       if (finishedWork.effectTag & Snapshot) {
         if (current$$1 !== null) {
           var prevProps = current$$1.memoizedProps;
           var prevState = current$$1.memoizedState;
           startPhaseTimer(finishedWork, "getSnapshotBeforeUpdate");
           var instance = finishedWork.stateNode;
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
-          var snapshot = instance.getSnapshotBeforeUpdate(prevProps, prevState);
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "getSnapshotBeforeUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "getSnapshotBeforeUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
+          var snapshot = instance.getSnapshotBeforeUpdate(
+            finishedWork.elementType === finishedWork.type
+              ? prevProps
+              : resolveDefaultProps(finishedWork.type, prevProps),
+            prevState
+          );
           {
             var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate;
             if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) {
@@ -12114,6 +13833,7 @@ function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
     case HostComponent:
     case HostText:
     case HostPortal:
+    case IncompleteClassComponent:
       // Nothing to do for these component types
       return;
     default: {
@@ -12126,6 +13846,66 @@ function commitBeforeMutationLifeCycles(current$$1, finishedWork) {
   }
 }
 
+function commitHookEffectList(unmountTag, mountTag, finishedWork) {
+  if (!enableHooks) {
+    return;
+  }
+  var updateQueue = finishedWork.updateQueue;
+  var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+  if (lastEffect !== null) {
+    var firstEffect = lastEffect.next;
+    var effect = firstEffect;
+    do {
+      if ((effect.tag & unmountTag) !== NoEffect$1) {
+        // Unmount
+        var destroy = effect.destroy;
+        effect.destroy = null;
+        if (destroy !== null) {
+          destroy();
+        }
+      }
+      if ((effect.tag & mountTag) !== NoEffect$1) {
+        // Mount
+        var create = effect.create;
+        var _destroy = create();
+        if (typeof _destroy !== "function") {
+          {
+            if (_destroy !== null && _destroy !== undefined) {
+              warningWithoutStack$1(
+                false,
+                "useEffect function must return a cleanup function or " +
+                  "nothing.%s%s",
+                typeof _destroy.then === "function"
+                  ? "\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. " +
+                    "Instead, you may write an async function separately " +
+                    "and then call it from inside the effect:\n\n" +
+                    "async function fetchComment(commentId) {\n" +
+                    "  // You can await here\n" +
+                    "}\n\n" +
+                    "useEffect(() => {\n" +
+                    "  fetchComment(commentId);\n" +
+                    "}, [commentId]);\n\n" +
+                    "In the future, React will provide a more idiomatic solution for data fetching " +
+                    "that doesn't involve writing effects manually."
+                  : "",
+                getStackByFiberInDevAndProd(finishedWork)
+              );
+            }
+          }
+          _destroy = null;
+        }
+        effect.destroy = _destroy;
+      }
+      effect = effect.next;
+    } while (effect !== firstEffect);
+  }
+}
+
+function commitPassiveHookEffects(finishedWork) {
+  commitHookEffectList(UnmountPassive, NoEffect$1, finishedWork);
+  commitHookEffectList(NoEffect$1, MountPassive, finishedWork);
+}
+
 function commitLifeCycles(
   finishedRoot,
   current$$1,
@@ -12133,22 +13913,93 @@ function commitLifeCycles(
   committedExpirationTime
 ) {
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent: {
+      commitHookEffectList(UnmountLayout, MountLayout, finishedWork);
+      break;
+    }
+    case ClassComponent: {
       var instance = finishedWork.stateNode;
       if (finishedWork.effectTag & Update) {
         if (current$$1 === null) {
           startPhaseTimer(finishedWork, "componentDidMount");
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "componentDidMount. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "componentDidMount. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
           instance.componentDidMount();
           stopPhaseTimer();
         } else {
-          var prevProps = current$$1.memoizedProps;
+          var prevProps =
+            finishedWork.elementType === finishedWork.type
+              ? current$$1.memoizedProps
+              : resolveDefaultProps(
+                  finishedWork.type,
+                  current$$1.memoizedProps
+                );
           var prevState = current$$1.memoizedState;
           startPhaseTimer(finishedWork, "componentDidUpdate");
-          instance.props = finishedWork.memoizedProps;
-          instance.state = finishedWork.memoizedState;
+          // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+          {
+            if (
+              finishedWork.type === finishedWork.elementType &&
+              !didWarnAboutReassigningProps
+            ) {
+              !(instance.props === finishedWork.memoizedProps)
+                ? warning$1(
+                    false,
+                    "Expected %s props to match memoized props before " +
+                      "componentDidUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+              !(instance.state === finishedWork.memoizedState)
+                ? warning$1(
+                    false,
+                    "Expected %s state to match memoized state before " +
+                      "componentDidUpdate. " +
+                      "This might either be because of a bug in React, or because " +
+                      "a component reassigns its own `this.props`. " +
+                      "Please file an issue.",
+                    getComponentName(finishedWork.type) || "instance"
+                  )
+                : void 0;
+            }
+          }
           instance.componentDidUpdate(
             prevProps,
             prevState,
@@ -12159,8 +14010,38 @@ function commitLifeCycles(
       }
       var updateQueue = finishedWork.updateQueue;
       if (updateQueue !== null) {
-        instance.props = finishedWork.memoizedProps;
-        instance.state = finishedWork.memoizedState;
+        {
+          if (
+            finishedWork.type === finishedWork.elementType &&
+            !didWarnAboutReassigningProps
+          ) {
+            !(instance.props === finishedWork.memoizedProps)
+              ? warning$1(
+                  false,
+                  "Expected %s props to match memoized props before " +
+                    "processing the update queue. " +
+                    "This might either be because of a bug in React, or because " +
+                    "a component reassigns its own `this.props`. " +
+                    "Please file an issue.",
+                  getComponentName(finishedWork.type) || "instance"
+                )
+              : void 0;
+            !(instance.state === finishedWork.memoizedState)
+              ? warning$1(
+                  false,
+                  "Expected %s state to match memoized state before " +
+                    "processing the update queue. " +
+                    "This might either be because of a bug in React, or because " +
+                    "a component reassigns its own `this.props`. " +
+                    "Please file an issue.",
+                  getComponentName(finishedWork.type) || "instance"
+                )
+              : void 0;
+          }
+        }
+        // We could update instance props and state here,
+        // but instead we rely on them being set during last render.
+        // TODO: revisit this when we implement resuming.
         commitUpdateQueue(
           finishedWork,
           updateQueue,
@@ -12180,7 +14061,6 @@ function commitLifeCycles(
               _instance = getPublicInstance(finishedWork.child.stateNode);
               break;
             case ClassComponent:
-            case ClassComponentLazy:
               _instance = finishedWork.child.stateNode;
               break;
           }
@@ -12220,7 +14100,7 @@ function commitLifeCycles(
       if (enableProfilerTimer) {
         var onRender = finishedWork.memoizedProps.onRender;
 
-        if (enableSchedulerTracking) {
+        if (enableSchedulerTracing) {
           onRender(
             finishedWork.memoizedProps.id,
             current$$1 === null ? "mount" : "update",
@@ -12243,25 +14123,10 @@ function commitLifeCycles(
       }
       return;
     }
-    case PlaceholderComponent: {
-      if (enableSuspense) {
-        if ((finishedWork.mode & StrictMode) === NoEffect) {
-          // In loose mode, a placeholder times out by scheduling a synchronous
-          // update in the commit phase. Use `updateQueue` field to signal that
-          // the Timeout needs to switch to the placeholder. We don't need an
-          // entire queue. Any non-null value works.
-          // $FlowFixMe - Intentionally using a value other than an UpdateQueue.
-          finishedWork.updateQueue = emptyObject$1;
-          scheduleWork(finishedWork, Sync);
-        } else {
-          // In strict mode, the Update effect is used to record the time at
-          // which the placeholder timed out.
-          var currentTime = requestCurrentTime();
-          finishedWork.stateNode = { timedOutAt: currentTime };
-        }
-      }
-      return;
-    }
+    case SuspenseComponent:
+      break;
+    case IncompleteClassComponent:
+      break;
     default: {
       invariant(
         false,
@@ -12272,6 +14137,54 @@ function commitLifeCycles(
   }
 }
 
+function hideOrUnhideAllChildren(finishedWork, isHidden) {
+  if (supportsMutation) {
+    // We only have the top Fiber that was inserted but we need recurse down its
+    var node = finishedWork;
+    while (true) {
+      if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+        if (isHidden) {
+          hideInstance(instance);
+        } else {
+          unhideInstance(node.stateNode, node.memoizedProps);
+        }
+      } else if (node.tag === HostText) {
+        var _instance3 = node.stateNode;
+        if (isHidden) {
+          hideTextInstance(_instance3);
+        } else {
+          unhideTextInstance(_instance3, node.memoizedProps);
+        }
+      } else if (
+        node.tag === SuspenseComponent &&
+        node.memoizedState !== null
+      ) {
+        // Found a nested Suspense component that timed out. Skip over the
+        var fallbackChildFragment = node.child.sibling;
+        fallbackChildFragment.return = node;
+        node = fallbackChildFragment;
+        continue;
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+      if (node === finishedWork) {
+        return;
+      }
+      while (node.sibling === null) {
+        if (node.return === null || node.return === finishedWork) {
+          return;
+        }
+        node = node.return;
+      }
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+}
+
 function commitAttachRef(finishedWork) {
   var ref = finishedWork.ref;
   if (ref !== null) {
@@ -12322,8 +14235,28 @@ function commitUnmount(current$$1) {
   onCommitUnmount(current$$1);
 
   switch (current$$1.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent: {
+      var updateQueue = current$$1.updateQueue;
+      if (updateQueue !== null) {
+        var lastEffect = updateQueue.lastEffect;
+        if (lastEffect !== null) {
+          var firstEffect = lastEffect.next;
+          var effect = firstEffect;
+          do {
+            var destroy = effect.destroy;
+            if (destroy !== null) {
+              safelyCallDestroy(current$$1, destroy);
+            }
+            effect = effect.next;
+          } while (effect !== firstEffect);
+        }
+      }
+      break;
+    }
+    case ClassComponent: {
       safelyDetachRef(current$$1);
       var instance = current$$1.stateNode;
       if (typeof instance.componentWillUnmount === "function") {
@@ -12391,9 +14324,14 @@ function detachFiber(current$$1) {
   // itself will be GC:ed when the parent updates the next time.
   current$$1.return = null;
   current$$1.child = null;
-  if (current$$1.alternate) {
-    current$$1.alternate.child = null;
-    current$$1.alternate.return = null;
+  current$$1.memoizedState = null;
+  current$$1.updateQueue = null;
+  var alternate = current$$1.alternate;
+  if (alternate !== null) {
+    alternate.return = null;
+    alternate.child = null;
+    alternate.memoizedState = null;
+    alternate.updateQueue = null;
   }
 }
 
@@ -12415,8 +14353,7 @@ function commitContainer(finishedWork) {
   }
 
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case ClassComponent: {
       return;
     }
     case HostComponent: {
@@ -12690,13 +14627,33 @@ function commitDeletion(current$$1) {
 
 function commitWork(current$$1, finishedWork) {
   if (!supportsMutation) {
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case MemoComponent:
+      case SimpleMemoComponent: {
+        // Note: We currently never use MountMutation, but useLayout uses
+        // UnmountMutation.
+        commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
+        return;
+      }
+    }
+
     commitContainer(finishedWork);
     return;
   }
 
   switch (finishedWork.tag) {
-    case ClassComponent:
-    case ClassComponentLazy: {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent: {
+      // Note: We currently never use MountMutation, but useLayout uses
+      // UnmountMutation.
+      commitHookEffectList(UnmountMutation, MountMutation, finishedWork);
+      return;
+    }
+    case ClassComponent: {
       return;
     }
     case HostComponent: {
@@ -12747,7 +14704,30 @@ function commitWork(current$$1, finishedWork) {
     case Profiler: {
       return;
     }
-    case PlaceholderComponent: {
+    case SuspenseComponent: {
+      var newState = finishedWork.memoizedState;
+
+      var newDidTimeout = void 0;
+      var primaryChildParent = finishedWork;
+      if (newState === null) {
+        newDidTimeout = false;
+      } else {
+        newDidTimeout = true;
+        primaryChildParent = finishedWork.child;
+        if (newState.timedOutAt === NoWork) {
+          // If the children had not already timed out, record the time.
+          // This is used to compute the elapsed time during subsequent
+          // attempts to render the children.
+          newState.timedOutAt = requestCurrentTime();
+        }
+      }
+
+      if (primaryChildParent !== null) {
+        hideOrUnhideAllChildren(primaryChildParent, newDidTimeout);
+      }
+      return;
+    }
+    case IncompleteClassComponent: {
       return;
     }
     default: {
@@ -12767,10 +14747,6 @@ function commitResetTextContent(current$$1) {
   resetTextContent(current$$1.stateNode);
 }
 
-function NoopComponent() {
-  return null;
-}
-
 function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
   var update = createUpdate(expirationTime);
   // Unmount the root by rendering null.
@@ -12789,28 +14765,22 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   var update = createUpdate(expirationTime);
   update.tag = CaptureUpdate;
-  var getDerivedStateFromCatch = fiber.type.getDerivedStateFromCatch;
-  if (
-    enableGetDerivedStateFromCatch &&
-    typeof getDerivedStateFromCatch === "function"
-  ) {
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if (typeof getDerivedStateFromError === "function") {
     var error = errorInfo.value;
     update.payload = function() {
-      return getDerivedStateFromCatch(error);
+      return getDerivedStateFromError(error);
     };
   }
 
   var inst = fiber.stateNode;
   if (inst !== null && typeof inst.componentDidCatch === "function") {
     update.callback = function callback() {
-      if (
-        !enableGetDerivedStateFromCatch ||
-        getDerivedStateFromCatch !== "function"
-      ) {
+      if (typeof getDerivedStateFromError !== "function") {
         // To preserve the preexisting retry behavior of error boundaries,
         // we keep track of which ones already failed during this batch.
         // This gets reset before we yield back to the browser.
-        // TODO: Warn in strict mode if getDerivedStateFromCatch is
+        // TODO: Warn in strict mode if getDerivedStateFromError is
         // not defined.
         markLegacyErrorBoundaryAsFailed(this);
       }
@@ -12820,6 +14790,21 @@ function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
       this.componentDidCatch(error, {
         componentStack: stack !== null ? stack : ""
       });
+      {
+        if (typeof getDerivedStateFromError !== "function") {
+          // If componentDidCatch is the only error boundary method defined,
+          // then it needs to call setState to recover from errors.
+          // If no state update is scheduled then the boundary will swallow the error.
+          !(fiber.expirationTime === Sync)
+            ? warningWithoutStack$1(
+                false,
+                "%s: Error boundaries should implement getDerivedStateFromError(). " +
+                  "In that method, return a state update to display an error message or fallback UI.",
+                getComponentName(fiber.type) || "Unknown"
+              )
+            : void 0;
+        }
+      }
     };
   }
   return update;
@@ -12838,7 +14823,6 @@ function throwException(
   sourceFiber.firstEffect = sourceFiber.lastEffect = null;
 
   if (
-    enableSuspense &&
     value !== null &&
     typeof value === "object" &&
     typeof value.then === "function"
@@ -12855,25 +14839,20 @@ function throwException(
     var earliestTimeoutMs = -1;
     var startTimeMs = -1;
     do {
-      if (_workInProgress.tag === PlaceholderComponent) {
-        var current = _workInProgress.alternate;
-        if (
-          current !== null &&
-          current.memoizedState === true &&
-          current.stateNode !== null
-        ) {
-          // Reached a placeholder that already timed out. Each timed out
-          // placeholder acts as the root of a new suspense boundary.
-
-          // Use the time at which the placeholder timed out as the start time
-          // for the current render.
-          var timedOutAt = current.stateNode.timedOutAt;
-          startTimeMs = expirationTimeToMs(timedOutAt);
-
-          // Do not search any further.
-          break;
+      if (_workInProgress.tag === SuspenseComponent) {
+        var current$$1 = _workInProgress.alternate;
+        if (current$$1 !== null) {
+          var currentState = current$$1.memoizedState;
+          if (currentState !== null) {
+            // Reached a boundary that already timed out. Do not search
+            // any further.
+            var timedOutAt = currentState.timedOutAt;
+            startTimeMs = expirationTimeToMs(timedOutAt);
+            // Do not search any further.
+            break;
+          }
         }
-        var timeoutPropMs = _workInProgress.pendingProps.delayMs;
+        var timeoutPropMs = _workInProgress.pendingProps.maxDuration;
         if (typeof timeoutPropMs === "number") {
           if (timeoutPropMs <= 0) {
             earliestTimeoutMs = 0;
@@ -12888,129 +14867,124 @@ function throwException(
       _workInProgress = _workInProgress.return;
     } while (_workInProgress !== null);
 
-    // Schedule the nearest Placeholder to re-render the timed out view.
+    // Schedule the nearest Suspense to re-render the timed out view.
     _workInProgress = returnFiber;
     do {
-      if (_workInProgress.tag === PlaceholderComponent) {
-        var didTimeout = _workInProgress.memoizedState;
-        if (!didTimeout) {
-          // Found the nearest boundary.
-
-          // If the boundary is not in async mode, we should not suspend, and
-          // likewise, when the promise resolves, we should ping synchronously.
-          var pingTime =
-            (_workInProgress.mode & AsyncMode) === NoEffect
-              ? Sync
-              : renderExpirationTime;
-
-          // Attach a listener to the promise to "ping" the root and retry.
-          var onResolveOrReject = retrySuspendedRoot.bind(
-            null,
-            root,
-            _workInProgress,
-            pingTime
-          );
-          thenable.then(onResolveOrReject, onResolveOrReject);
-
-          // If the boundary is outside of strict mode, we should *not* suspend
-          // the commit. Pretend as if the suspended component rendered null and
-          // keep rendering. In the commit phase, we'll schedule a subsequent
-          // synchronous update to re-render the Placeholder.
-          //
-          // Note: It doesn't matter whether the component that suspended was
-          // inside a strict mode tree. If the Placeholder is outside of it, we
-          // should *not* suspend the commit.
-          if ((_workInProgress.mode & StrictMode) === NoEffect) {
-            _workInProgress.effectTag |= Update;
-
-            // Unmount the source fiber's children
-            var nextChildren = null;
-            reconcileChildren(
-              sourceFiber.alternate,
-              sourceFiber,
-              nextChildren,
-              renderExpirationTime
-            );
-            sourceFiber.effectTag &= ~Incomplete;
-            if (sourceFiber.tag === IndeterminateComponent) {
-              // Let's just assume it's a functional component. This fiber will
-              // be unmounted in the immediate next commit, anyway.
-              sourceFiber.tag = FunctionalComponent;
+      if (
+        _workInProgress.tag === SuspenseComponent &&
+        shouldCaptureSuspense(_workInProgress.alternate, _workInProgress)
+      ) {
+        // Found the nearest boundary.
+
+        // If the boundary is not in concurrent mode, we should not suspend, and
+        // likewise, when the promise resolves, we should ping synchronously.
+        var pingTime =
+          (_workInProgress.mode & ConcurrentMode) === NoEffect
+            ? Sync
+            : renderExpirationTime;
+
+        // Attach a listener to the promise to "ping" the root and retry.
+        var onResolveOrReject = retrySuspendedRoot.bind(
+          null,
+          root,
+          _workInProgress,
+          sourceFiber,
+          pingTime
+        );
+        if (enableSchedulerTracing) {
+          onResolveOrReject = tracing.unstable_wrap(onResolveOrReject);
+        }
+        thenable.then(onResolveOrReject, onResolveOrReject);
+
+        // If the boundary is outside of concurrent mode, we should *not*
+        // suspend the commit. Pretend as if the suspended component rendered
+        // null and keep rendering. In the commit phase, we'll schedule a
+        // subsequent synchronous update to re-render the Suspense.
+        //
+        // Note: It doesn't matter whether the component that suspended was
+        // inside a concurrent mode tree. If the Suspense is outside of it, we
+        // should *not* suspend the commit.
+        if ((_workInProgress.mode & ConcurrentMode) === NoEffect) {
+          _workInProgress.effectTag |= DidCapture;
+
+          // We're going to commit this fiber even though it didn't complete.
+          // But we shouldn't call any lifecycle methods or callbacks. Remove
+          // all lifecycle effect tags.
+          sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);
+
+          if (sourceFiber.tag === ClassComponent) {
+            var _current = sourceFiber.alternate;
+            if (_current === null) {
+              // This is a new mount. Change the tag so it's not mistaken for a
+              // completed class component. For example, we should not call
+              // componentWillUnmount if it is deleted.
+              sourceFiber.tag = IncompleteClassComponent;
             }
+          }
 
-            if (
-              sourceFiber.tag === ClassComponent ||
-              sourceFiber.tag === ClassComponentLazy
-            ) {
-              // We're going to commit this fiber even though it didn't
-              // complete. But we shouldn't call any lifecycle methods or
-              // callbacks. Remove all lifecycle effect tags.
-              sourceFiber.effectTag &= ~LifecycleEffectMask;
-              if (sourceFiber.alternate === null) {
-                // We're about to mount a class component that doesn't have an
-                // instance. Turn this into a dummy functional component instead,
-                // to prevent type errors. This is a bit weird but it's an edge
-                // case and we're about to synchronously delete this
-                // component, anyway.
-                sourceFiber.tag = FunctionalComponent;
-                sourceFiber.type = NoopComponent;
-              }
-            }
+          // The source fiber did not complete. Mark it with the current
+          // render priority to indicate that it still has pending work.
+          sourceFiber.expirationTime = renderExpirationTime;
 
-            // Exit without suspending.
-            return;
-          }
+          // Exit without suspending.
+          return;
+        }
 
-          // Confirmed that the boundary is in a strict mode tree. Continue with
-          // the normal suspend path.
+        // Confirmed that the boundary is in a concurrent mode tree. Continue
+        // with the normal suspend path.
 
-          var absoluteTimeoutMs = void 0;
-          if (earliestTimeoutMs === -1) {
-            // If no explicit threshold is given, default to an abitrarily large
-            // value. The actual size doesn't matter because the threshold for the
-            // whole tree will be clamped to the expiration time.
-            absoluteTimeoutMs = maxSigned31BitInt;
-          } else {
-            if (startTimeMs === -1) {
-              // This suspend happened outside of any already timed-out
-              // placeholders. We don't know exactly when the update was scheduled,
-              // but we can infer an approximate start time from the expiration
-              // time. First, find the earliest uncommitted expiration time in the
-              // tree, including work that is suspended. Then subtract the offset
-              // used to compute an async update's expiration time. This will cause
-              // high priority (interactive) work to expire earlier than necessary,
-              // but we can account for this by adjusting for the Just Noticeable
-              // Difference.
-              var earliestExpirationTime = findEarliestOutstandingPriorityLevel(
-                root,
-                renderExpirationTime
-              );
-              var earliestExpirationTimeMs = expirationTimeToMs(
-                earliestExpirationTime
-              );
-              startTimeMs = earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
-            }
-            absoluteTimeoutMs = startTimeMs + earliestTimeoutMs;
+        var absoluteTimeoutMs = void 0;
+        if (earliestTimeoutMs === -1) {
+          // If no explicit threshold is given, default to an abitrarily large
+          // value. The actual size doesn't matter because the threshold for the
+          // whole tree will be clamped to the expiration time.
+          absoluteTimeoutMs = maxSigned31BitInt;
+        } else {
+          if (startTimeMs === -1) {
+            // This suspend happened outside of any already timed-out
+            // placeholders. We don't know exactly when the update was
+            // scheduled, but we can infer an approximate start time from the
+            // expiration time. First, find the earliest uncommitted expiration
+            // time in the tree, including work that is suspended. Then subtract
+            // the offset used to compute an async update's expiration time.
+            // This will cause high priority (interactive) work to expire
+            // earlier than necessary, but we can account for this by adjusting
+            // for the Just Noticeable Difference.
+            var earliestExpirationTime = findEarliestOutstandingPriorityLevel(
+              root,
+              renderExpirationTime
+            );
+            var earliestExpirationTimeMs = expirationTimeToMs(
+              earliestExpirationTime
+            );
+            startTimeMs = earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
           }
+          absoluteTimeoutMs = startTimeMs + earliestTimeoutMs;
+        }
 
-          // Mark the earliest timeout in the suspended fiber's ancestor path.
-          // After completing the root, we'll take the largest of all the
-          // suspended fiber's timeouts and use it to compute a timeout for the
-          // whole tree.
-          renderDidSuspend(root, absoluteTimeoutMs, renderExpirationTime);
+        // Mark the earliest timeout in the suspended fiber's ancestor path.
+        // After completing the root, we'll take the largest of all the
+        // suspended fiber's timeouts and use it to compute a timeout for the
+        // whole tree.
+        renderDidSuspend(root, absoluteTimeoutMs, renderExpirationTime);
 
-          _workInProgress.effectTag |= ShouldCapture;
-          _workInProgress.expirationTime = renderExpirationTime;
-          return;
-        }
-        // This boundary already captured during this render. Continue to the
-        // next boundary.
+        _workInProgress.effectTag |= ShouldCapture;
+        _workInProgress.expirationTime = renderExpirationTime;
+        return;
       }
+      // This boundary already captured during this render. Continue to the next
+      // boundary.
       _workInProgress = _workInProgress.return;
     } while (_workInProgress !== null);
     // No boundary was found. Fallthrough to error mode.
+    // TODO: Use invariant so the message is stripped in prod?
     value = new Error(
-      "An update was suspended, but no placeholder UI was provided."
+      (getComponentName(sourceFiber.type) || "A React component") +
+        " suspended while rendering, but no fallback UI was specified.\n" +
+        "\n" +
+        "Add a <Suspense fallback=...> component higher in the tree to " +
+        "provide a loading indicator or placeholder to display." +
+        getStackByFiberInDevAndProd(sourceFiber)
     );
   }
 
@@ -13035,15 +15009,13 @@ function throwException(
         return;
       }
       case ClassComponent:
-      case ClassComponentLazy:
         // Capture and retry
         var errorInfo = value;
         var ctor = workInProgress.type;
         var instance = workInProgress.stateNode;
         if (
           (workInProgress.effectTag & DidCapture) === NoEffect &&
-          ((typeof ctor.getDerivedStateFromCatch === "function" &&
-            enableGetDerivedStateFromCatch) ||
+          (typeof ctor.getDerivedStateFromError === "function" ||
             (instance !== null &&
               typeof instance.componentDidCatch === "function" &&
               !isAlreadyFailedLegacyErrorBoundary(instance)))
@@ -13081,38 +15053,27 @@ function unwindWork(workInProgress, renderExpirationTime) {
       }
       return null;
     }
-    case ClassComponentLazy: {
-      var _Component = workInProgress.type._reactResult;
-      if (isContextProvider(_Component)) {
-        popContext(workInProgress);
-      }
-      var _effectTag = workInProgress.effectTag;
-      if (_effectTag & ShouldCapture) {
-        workInProgress.effectTag = (_effectTag & ~ShouldCapture) | DidCapture;
-        return workInProgress;
-      }
-      return null;
-    }
     case HostRoot: {
       popHostContainer(workInProgress);
       popTopLevelContextObject(workInProgress);
-      var _effectTag2 = workInProgress.effectTag;
+      var _effectTag = workInProgress.effectTag;
       invariant(
-        (_effectTag2 & DidCapture) === NoEffect,
+        (_effectTag & DidCapture) === NoEffect,
         "The root failed to unmount after an error. This is likely a bug in " +
           "React. Please file an issue."
       );
-      workInProgress.effectTag = (_effectTag2 & ~ShouldCapture) | DidCapture;
+      workInProgress.effectTag = (_effectTag & ~ShouldCapture) | DidCapture;
       return workInProgress;
     }
     case HostComponent: {
       popHostContext(workInProgress);
       return null;
     }
-    case PlaceholderComponent: {
-      var _effectTag3 = workInProgress.effectTag;
-      if (_effectTag3 & ShouldCapture) {
-        workInProgress.effectTag = (_effectTag3 & ~ShouldCapture) | DidCapture;
+    case SuspenseComponent: {
+      var _effectTag2 = workInProgress.effectTag;
+      if (_effectTag2 & ShouldCapture) {
+        workInProgress.effectTag = (_effectTag2 & ~ShouldCapture) | DidCapture;
+        // Captured a suspense effect. Re-render the boundary.
         return workInProgress;
       }
       return null;
@@ -13137,14 +15098,6 @@ function unwindInterruptedWork(interruptedWork) {
       }
       break;
     }
-    case ClassComponentLazy: {
-      var _childContextTypes =
-        interruptedWork.type._reactResult.childContextTypes;
-      if (_childContextTypes !== null && _childContextTypes !== undefined) {
-        popContext(interruptedWork);
-      }
-      break;
-    }
     case HostRoot: {
       popHostContainer(interruptedWork);
       popTopLevelContextObject(interruptedWork);
@@ -13166,6 +15119,18 @@ function unwindInterruptedWork(interruptedWork) {
 }
 
 var Dispatcher = {
+  readContext: readContext,
+  useCallback: useCallback,
+  useContext: useContext,
+  useEffect: useEffect,
+  useImperativeMethods: useImperativeMethods,
+  useLayoutEffect: useLayoutEffect,
+  useMemo: useMemo,
+  useReducer: useReducer,
+  useRef: useRef,
+  useState: useState
+};
+var DispatcherWithoutHooks = {
   readContext: readContext
 };
 
@@ -13176,14 +15141,14 @@ var didWarnSetStateChildContext = void 0;
 var warnAboutUpdateOnUnmounted = void 0;
 var warnAboutInvalidUpdates = void 0;
 
-if (enableSchedulerTracking) {
+if (enableSchedulerTracing) {
   // Provide explicit error message when production+profiling bundle of e.g. react-dom
-  // is used with production (non-profiling) bundle of schedule/tracking
+  // is used with production (non-profiling) bundle of scheduler/tracing
   invariant(
-    tracking.__interactionsRef != null &&
-      tracking.__interactionsRef.current != null,
+    tracing.__interactionsRef != null &&
+      tracing.__interactionsRef.current != null,
     "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) " +
-      "without also replacing the `schedule/tracking` module with `schedule/tracking-profiling`. " +
+      "without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. " +
       "Your bundler might have a setting for aliasing both modules. " +
       "Learn more at http://fb.me/react-profiling"
   );
@@ -13194,19 +15159,21 @@ if (enableSchedulerTracking) {
   didWarnSetStateChildContext = false;
   var didWarnStateUpdateForUnmountedComponent = {};
 
-  warnAboutUpdateOnUnmounted = function(fiber) {
+  warnAboutUpdateOnUnmounted = function(fiber, isClass) {
     // We show the whole stack but dedupe on the top component's name because
     // the problematic code almost always lies inside that component.
-    var componentName = getComponentName(fiber.type) || "ReactClass";
+    var componentName = getComponentName(fiber.type) || "ReactComponent";
     if (didWarnStateUpdateForUnmountedComponent[componentName]) {
       return;
     }
     warningWithoutStack$1(
       false,
-      "Can't call setState (or forceUpdate) on an unmounted component. This " +
+      "Can't perform a React state update on an unmounted component. This " +
         "is a no-op, but it indicates a memory leak in your application. To " +
-        "fix, cancel all subscriptions and asynchronous tasks in the " +
-        "componentWillUnmount method.%s",
+        "fix, cancel all subscriptions and asynchronous tasks in %s.%s",
+      isClass
+        ? "the componentWillUnmount method"
+        : "a useEffect cleanup function",
       getStackByFiberInDevAndProd(fiber)
     );
     didWarnStateUpdateForUnmountedComponent[componentName] = true;
@@ -13258,23 +15225,24 @@ var nextRenderDidError = false;
 var nextEffect = null;
 
 var isCommitting$1 = false;
+var rootWithPendingPassiveEffects = null;
+var passiveEffectCallbackHandle = null;
+var passiveEffectCallback = null;
 
 var legacyErrorBoundariesThatAlreadyFailed = null;
 
 // Used for performance tracking.
 var interruptedBy = null;
 
-// Do not decrement interaction counts in the event of suspense timeouts.
-// This would lead to prematurely calling the interaction-complete hook.
-var suspenseDidTimeout = false;
-
 var stashedWorkInProgressProperties = void 0;
 var replayUnitOfWork = void 0;
+var mayReplayFailedUnitOfWork = void 0;
 var isReplayingFailedUnitOfWork = void 0;
 var originalReplayError = void 0;
 var rethrowOriginalError = void 0;
 if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
   stashedWorkInProgressProperties = null;
+  mayReplayFailedUnitOfWork = true;
   isReplayingFailedUnitOfWork = false;
   originalReplayError = null;
   replayUnitOfWork = function(failedUnitOfWork, thrownValue, isYieldy) {
@@ -13319,13 +15287,6 @@ if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
         }
         break;
       }
-      case ClassComponentLazy: {
-        var _Component = getResultFromResolvedThenable(failedUnitOfWork.type);
-        if (isContextProvider(_Component)) {
-          popContext(failedUnitOfWork);
-        }
-        break;
-      }
       case HostPortal:
         popHostContainer(failedUnitOfWork);
         break;
@@ -13464,8 +15425,6 @@ function commitBeforeMutationLifecycles() {
       commitBeforeMutationLifeCycles(current$$1, nextEffect);
     }
 
-    // Don't cleanup effects yet;
-    // This will be done by commitAllLifeCycles()
     nextEffect = nextEffect.nextEffect;
   }
 
@@ -13477,14 +15436,11 @@ function commitBeforeMutationLifecycles() {
 function commitAllLifeCycles(finishedRoot, committedExpirationTime) {
   {
     ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings();
+    ReactStrictModeWarnings.flushLegacyContextWarning();
 
     if (warnAboutDeprecatedLifecycles) {
       ReactStrictModeWarnings.flushPendingDeprecationWarnings();
     }
-
-    if (warnAboutLegacyContextAPI) {
-      ReactStrictModeWarnings.flushLegacyContextWarning();
-    }
   }
   while (nextEffect !== null) {
     var effectTag = nextEffect.effectTag;
@@ -13500,20 +15456,53 @@ function commitAllLifeCycles(finishedRoot, committedExpirationTime) {
       );
     }
 
-    if (effectTag & Ref) {
-      recordEffect();
-      commitAttachRef(nextEffect);
+    if (effectTag & Ref) {
+      recordEffect();
+      commitAttachRef(nextEffect);
+    }
+
+    if (enableHooks && effectTag & Passive) {
+      rootWithPendingPassiveEffects = finishedRoot;
+    }
+
+    nextEffect = nextEffect.nextEffect;
+  }
+}
+
+function commitPassiveEffects(root, firstEffect) {
+  rootWithPendingPassiveEffects = null;
+  passiveEffectCallbackHandle = null;
+  passiveEffectCallback = null;
+
+  // Set this to true to prevent re-entrancy
+  var previousIsRendering = isRendering;
+  isRendering = true;
+
+  var effect = firstEffect;
+  do {
+    if (effect.effectTag & Passive) {
+      var didError = false;
+      var error = void 0;
+      {
+        invokeGuardedCallback(null, commitPassiveHookEffects, null, effect);
+        if (hasCaughtError()) {
+          didError = true;
+          error = clearCaughtError();
+        }
+      }
+      if (didError) {
+        captureCommitPhaseError(effect, error);
+      }
     }
+    effect = effect.nextEffect;
+  } while (effect !== null);
 
-    var next = nextEffect.nextEffect;
-    // Ensure that we clean these up so that we don't accidentally keep them.
-    // I'm not actually sure this matters because we can't reset firstEffect
-    // and lastEffect since they're on every node, not just the effectful
-    // ones. So we have to clean everything as we reuse nodes anyway.
-    nextEffect.nextEffect = null;
-    // Ensure that we reset the effectTag here so that we can rely on effect
-    // tags to reason about the current life-cycle.
-    nextEffect = next;
+  isRendering = previousIsRendering;
+
+  // Check if work was scheduled by one of the effects
+  var rootExpirationTime = root.expirationTime;
+  if (rootExpirationTime !== NoWork) {
+    requestWork(root, rootExpirationTime);
   }
 }
 
@@ -13532,6 +15521,15 @@ function markLegacyErrorBoundaryAsFailed(instance) {
   }
 }
 
+function flushPassiveEffects() {
+  if (passiveEffectCallback !== null) {
+    scheduler.unstable_cancelCallback(passiveEffectCallbackHandle);
+    // We call the scheduled callback instead of commitPassiveEffects directly
+    // to ensure tracing works correctly.
+    passiveEffectCallback();
+  }
+}
+
 function commitRoot(root, finishedWork) {
   isWorking = true;
   isCommitting$1 = true;
@@ -13557,41 +15555,17 @@ function commitRoot(root, finishedWork) {
   var updateExpirationTimeBeforeCommit = finishedWork.expirationTime;
   var childExpirationTimeBeforeCommit = finishedWork.childExpirationTime;
   var earliestRemainingTimeBeforeCommit =
-    updateExpirationTimeBeforeCommit === NoWork ||
-    (childExpirationTimeBeforeCommit !== NoWork &&
-      childExpirationTimeBeforeCommit < updateExpirationTimeBeforeCommit)
+    childExpirationTimeBeforeCommit > updateExpirationTimeBeforeCommit
       ? childExpirationTimeBeforeCommit
       : updateExpirationTimeBeforeCommit;
   markCommittedPriorityLevels(root, earliestRemainingTimeBeforeCommit);
 
   var prevInteractions = null;
-  var committedInteractions = enableSchedulerTracking ? [] : null;
-  if (enableSchedulerTracking) {
+  if (enableSchedulerTracing) {
     // Restore any pending interactions at this point,
     // So that cascading work triggered during the render phase will be accounted for.
-    prevInteractions = tracking.__interactionsRef.current;
-    tracking.__interactionsRef.current = root.memoizedInteractions;
-
-    // We are potentially finished with the current batch of interactions.
-    // So we should clear them out of the pending interaction map.
-    // We do this at the start of commit in case cascading work is scheduled by commit phase lifecycles.
-    // In that event, interaction data may be added back into the pending map for a future commit.
-    // We also store the interactions we are about to commit so that we can notify subscribers after we're done.
-    // These are stored as an Array rather than a Set,
-    // Because the same interaction may be pending for multiple expiration times,
-    // In which case it's important that we decrement the count the right number of times after finishing.
-    root.pendingInteractionMap.forEach(function(
-      scheduledInteractions,
-      scheduledExpirationTime
-    ) {
-      if (scheduledExpirationTime <= committedExpirationTime) {
-        committedInteractions.push.apply(
-          committedInteractions,
-          Array.from(scheduledInteractions)
-        );
-        root.pendingInteractionMap.delete(scheduledExpirationTime);
-      }
-    });
+    prevInteractions = tracing.__interactionsRef.current;
+    tracing.__interactionsRef.current = root.memoizedInteractions;
   }
 
   // Reset this to null before calling lifecycles
@@ -13723,6 +15697,26 @@ function commitRoot(root, finishedWork) {
     }
   }
 
+  if (
+    enableHooks &&
+    firstEffect !== null &&
+    rootWithPendingPassiveEffects !== null
+  ) {
+    // This commit included a passive effect. These do not need to fire until
+    // after the next paint. Schedule an callback to fire them in an async
+    // event. To ensure serial execution, the callback will be flushed early if
+    // we enter rootWithPendingPassiveEffects commit phase before then.
+    var callback = commitPassiveEffects.bind(null, root, firstEffect);
+    if (enableSchedulerTracing) {
+      // TODO: Avoid this extra callback by mutating the tracing ref directly,
+      // like we do at the beginning of commitRoot. I've opted not to do that
+      // here because that code is still in flux.
+      callback = tracing.unstable_wrap(callback);
+    }
+    passiveEffectCallbackHandle = scheduler.unstable_scheduleCallback(callback);
+    passiveEffectCallback = callback;
+  }
+
   isCommitting$1 = false;
   isWorking = false;
   stopCommitLifeCyclesTimer();
@@ -13735,9 +15729,7 @@ function commitRoot(root, finishedWork) {
   var updateExpirationTimeAfterCommit = finishedWork.expirationTime;
   var childExpirationTimeAfterCommit = finishedWork.childExpirationTime;
   var earliestRemainingTimeAfterCommit =
-    updateExpirationTimeAfterCommit === NoWork ||
-    (childExpirationTimeAfterCommit !== NoWork &&
-      childExpirationTimeAfterCommit < updateExpirationTimeAfterCommit)
+    childExpirationTimeAfterCommit > updateExpirationTimeAfterCommit
       ? childExpirationTimeAfterCommit
       : updateExpirationTimeAfterCommit;
   if (earliestRemainingTimeAfterCommit === NoWork) {
@@ -13747,13 +15739,13 @@ function commitRoot(root, finishedWork) {
   }
   onCommit(root, earliestRemainingTimeAfterCommit);
 
-  if (enableSchedulerTracking) {
-    tracking.__interactionsRef.current = prevInteractions;
+  if (enableSchedulerTracing) {
+    tracing.__interactionsRef.current = prevInteractions;
 
     var subscriber = void 0;
 
     try {
-      subscriber = tracking.__subscriberRef.current;
+      subscriber = tracing.__subscriberRef.current;
       if (subscriber !== null && root.memoizedInteractions.size > 0) {
         var threadID = computeThreadID(
           committedExpirationTime,
@@ -13769,28 +15761,38 @@ function commitRoot(root, finishedWork) {
         unhandledError = error;
       }
     } finally {
-      // Don't update interaction counts if we're frozen due to suspense.
-      // In this case, we can skip the completed-work check entirely.
-      if (!suspenseDidTimeout) {
-        // Now that we're done, check the completed batch of interactions.
-        // If no more work is outstanding for a given interaction,
-        // We need to notify the subscribers that it's finished.
-        committedInteractions.forEach(function(interaction) {
-          interaction.__count--;
-          if (subscriber !== null && interaction.__count === 0) {
-            try {
-              subscriber.onInteractionScheduledWorkCompleted(interaction);
-            } catch (error) {
-              // It's not safe for commitRoot() to throw.
-              // Store the error for now and we'll re-throw in finishRendering().
-              if (!hasUnhandledError) {
-                hasUnhandledError = true;
-                unhandledError = error;
+      // Clear completed interactions from the pending Map.
+      // Unless the render was suspended or cascading work was scheduled,
+      // In which case– leave pending interactions until the subsequent render.
+      var pendingInteractionMap = root.pendingInteractionMap;
+      pendingInteractionMap.forEach(function(
+        scheduledInteractions,
+        scheduledExpirationTime
+      ) {
+        // Only decrement the pending interaction count if we're done.
+        // If there's still work at the current priority,
+        // That indicates that we are waiting for suspense data.
+        if (scheduledExpirationTime > earliestRemainingTimeAfterCommit) {
+          pendingInteractionMap.delete(scheduledExpirationTime);
+
+          scheduledInteractions.forEach(function(interaction) {
+            interaction.__count--;
+
+            if (subscriber !== null && interaction.__count === 0) {
+              try {
+                subscriber.onInteractionScheduledWorkCompleted(interaction);
+              } catch (error) {
+                // It's not safe for commitRoot() to throw.
+                // Store the error for now and we'll re-throw in finishRendering().
+                if (!hasUnhandledError) {
+                  hasUnhandledError = true;
+                  unhandledError = error;
+                }
               }
             }
-          }
-        });
-      }
+          });
+        }
+      });
     }
   }
 }
@@ -13826,18 +15828,10 @@ function resetChildExpirationTime(workInProgress, renderTime) {
     while (child !== null) {
       var childUpdateExpirationTime = child.expirationTime;
       var childChildExpirationTime = child.childExpirationTime;
-      if (
-        newChildExpirationTime === NoWork ||
-        (childUpdateExpirationTime !== NoWork &&
-          childUpdateExpirationTime < newChildExpirationTime)
-      ) {
+      if (childUpdateExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = childUpdateExpirationTime;
       }
-      if (
-        newChildExpirationTime === NoWork ||
-        (childChildExpirationTime !== NoWork &&
-          childChildExpirationTime < newChildExpirationTime)
-      ) {
+      if (childChildExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = childChildExpirationTime;
       }
       if (shouldBubbleActualDurations) {
@@ -13853,18 +15847,10 @@ function resetChildExpirationTime(workInProgress, renderTime) {
     while (_child !== null) {
       var _childUpdateExpirationTime = _child.expirationTime;
       var _childChildExpirationTime = _child.childExpirationTime;
-      if (
-        newChildExpirationTime === NoWork ||
-        (_childUpdateExpirationTime !== NoWork &&
-          _childUpdateExpirationTime < newChildExpirationTime)
-      ) {
+      if (_childUpdateExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = _childUpdateExpirationTime;
       }
-      if (
-        newChildExpirationTime === NoWork ||
-        (_childChildExpirationTime !== NoWork &&
-          _childChildExpirationTime < newChildExpirationTime)
-      ) {
+      if (_childChildExpirationTime > newChildExpirationTime) {
         newChildExpirationTime = _childChildExpirationTime;
       }
       _child = _child.sibling;
@@ -13892,18 +15878,22 @@ function completeUnitOfWork(workInProgress) {
     var siblingFiber = workInProgress.sibling;
 
     if ((workInProgress.effectTag & Incomplete) === NoEffect) {
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        // Don't replay if it fails during completion phase.
+        mayReplayFailedUnitOfWork = false;
+      }
       // This fiber completed.
+      // Remember we're completing this unit so we can find a boundary if it fails.
+      nextUnitOfWork = workInProgress;
       if (enableProfilerTimer) {
         if (workInProgress.mode & ProfileMode) {
           startProfilerTimer(workInProgress);
         }
-
         nextUnitOfWork = completeWork(
           current$$1,
           workInProgress,
           nextRenderExpirationTime
         );
-
         if (workInProgress.mode & ProfileMode) {
           // Update render duration assuming we didn't error.
           stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
@@ -13915,21 +15905,19 @@ function completeUnitOfWork(workInProgress) {
           nextRenderExpirationTime
         );
       }
-      var next = nextUnitOfWork;
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        // We're out of completion phase so replaying is fine now.
+        mayReplayFailedUnitOfWork = true;
+      }
       stopWorkTimer(workInProgress);
       resetChildExpirationTime(workInProgress, nextRenderExpirationTime);
       {
         resetCurrentFiber();
       }
 
-      if (next !== null) {
-        stopWorkTimer(workInProgress);
-        if (true && ReactFiberInstrumentation_1.debugTool) {
-          ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
-        }
-        // If completing this work spawned new work, do that next. We'll come
-        // back here again.
-        return next;
+      if (nextUnitOfWork !== null) {
+        // Completing this fiber spawned new work. Work on that next.
+        return nextUnitOfWork;
       }
 
       if (
@@ -13985,15 +15973,24 @@ function completeUnitOfWork(workInProgress) {
         return null;
       }
     } else {
-      if (workInProgress.mode & ProfileMode) {
+      if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
         // Record the render duration for the fiber that errored.
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
+
+        // Include the time spent working on failed children before continuing.
+        var actualDuration = workInProgress.actualDuration;
+        var child = workInProgress.child;
+        while (child !== null) {
+          actualDuration += child.actualDuration;
+          child = child.sibling;
+        }
+        workInProgress.actualDuration = actualDuration;
       }
 
       // This fiber did not complete because something threw. Pop values off
       // the stack without entering the complete phase. If this is a boundary,
       // capture values if possible.
-      var _next = unwindWork(workInProgress, nextRenderExpirationTime);
+      var next = unwindWork(workInProgress, nextRenderExpirationTime);
       // Because this fiber did not complete, don't reset its expiration time.
       if (workInProgress.effectTag & DidCapture) {
         // Restarting an error boundary
@@ -14006,31 +16003,18 @@ function completeUnitOfWork(workInProgress) {
         resetCurrentFiber();
       }
 
-      if (_next !== null) {
+      if (next !== null) {
         stopWorkTimer(workInProgress);
         if (true && ReactFiberInstrumentation_1.debugTool) {
           ReactFiberInstrumentation_1.debugTool.onCompleteWork(workInProgress);
         }
 
-        if (enableProfilerTimer) {
-          // Include the time spent working on failed children before continuing.
-          if (_next.mode & ProfileMode) {
-            var actualDuration = _next.actualDuration;
-            var child = _next.child;
-            while (child !== null) {
-              actualDuration += child.actualDuration;
-              child = child.sibling;
-            }
-            _next.actualDuration = actualDuration;
-          }
-        }
-
         // If completing this work spawned new work, do that next. We'll come
         // back here again.
         // Since we're restarting, remove anything that is not a host effect
         // from the effect tag.
-        _next.effectTag &= HostEffectMask;
-        return _next;
+        next.effectTag &= HostEffectMask;
+        return next;
       }
 
       if (returnFiber !== null) {
@@ -14089,6 +16073,7 @@ function performUnitOfWork(workInProgress) {
     }
 
     next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+    workInProgress.memoizedProps = workInProgress.pendingProps;
 
     if (workInProgress.mode & ProfileMode) {
       // Record the render duration assuming we didn't bailout (or error).
@@ -14096,6 +16081,7 @@ function performUnitOfWork(workInProgress) {
     }
   } else {
     next = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+    workInProgress.memoizedProps = workInProgress.pendingProps;
   }
 
   {
@@ -14129,32 +16115,31 @@ function workLoop(isYieldy) {
       nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     }
   } else {
-    // Flush asynchronous work until the deadline runs out of time.
-    while (nextUnitOfWork !== null && !shouldYield()) {
+    // Flush asynchronous work until there's a higher priority event
+    while (nextUnitOfWork !== null && !shouldYieldToRenderer()) {
       nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     }
   }
 }
 
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused " +
       "by a bug in React. Please file an issue."
   );
-  isWorking = true;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
 
-  var expirationTime = root.nextExpirationTimeToWorkOn;
+  flushPassiveEffects();
 
-  var prevInteractions = null;
-  if (enableSchedulerTracking) {
-    // We're about to start new tracked work.
-    // Restore pending interactions so cascading work triggered during the render phase will be accounted for.
-    prevInteractions = tracking.__interactionsRef.current;
-    tracking.__interactionsRef.current = root.memoizedInteractions;
+  isWorking = true;
+  if (enableHooks) {
+    ReactCurrentOwner$2.currentDispatcher = Dispatcher;
+  } else {
+    ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
   }
 
+  var expirationTime = root.nextExpirationTimeToWorkOn;
+
   // Check if we're starting from a fresh stack, or if we're resuming from
   // previously yielded work.
   if (
@@ -14173,7 +16158,7 @@ function renderRoot(root, isYieldy, isExpired) {
     );
     root.pendingCommitExpirationTime = NoWork;
 
-    if (enableSchedulerTracking) {
+    if (enableSchedulerTracing) {
       // Determine which interactions this batch of work currently includes,
       // So that we can accurately attribute time spent working on it,
       var interactions = new Set();
@@ -14181,7 +16166,7 @@ function renderRoot(root, isYieldy, isExpired) {
         scheduledInteractions,
         scheduledExpirationTime
       ) {
-        if (scheduledExpirationTime <= expirationTime) {
+        if (scheduledExpirationTime >= expirationTime) {
           scheduledInteractions.forEach(function(interaction) {
             return interactions.add(interaction);
           });
@@ -14195,7 +16180,7 @@ function renderRoot(root, isYieldy, isExpired) {
       root.memoizedInteractions = interactions;
 
       if (interactions.size > 0) {
-        var subscriber = tracking.__subscriberRef.current;
+        var subscriber = tracing.__subscriberRef.current;
         if (subscriber !== null) {
           var threadID = computeThreadID(
             expirationTime,
@@ -14204,7 +16189,7 @@ function renderRoot(root, isYieldy, isExpired) {
           try {
             subscriber.onWorkStarted(interactions, threadID);
           } catch (error) {
-            // Work thrown by an interaction tracking subscriber should be rethrown,
+            // Work thrown by an interaction tracing subscriber should be rethrown,
             // But only once it's safe (to avoid leaveing the scheduler in an invalid state).
             // Store the error for now and we'll re-throw in finishRendering().
             if (!hasUnhandledError) {
@@ -14217,6 +16202,14 @@ function renderRoot(root, isYieldy, isExpired) {
     }
   }
 
+  var prevInteractions = null;
+  if (enableSchedulerTracing) {
+    // We're about to start new traced work.
+    // Restore pending interactions so cascading work triggered during the render phase will be accounted for.
+    prevInteractions = tracing.__interactionsRef.current;
+    tracing.__interactionsRef.current = root.memoizedInteractions;
+  }
+
   var didFatal = false;
 
   startWorkLoopTimer(nextUnitOfWork);
@@ -14225,20 +16218,39 @@ function renderRoot(root, isYieldy, isExpired) {
     try {
       workLoop(isYieldy);
     } catch (thrownValue) {
+      resetContextDependences();
+      resetHooks();
+
+      // Reset in case completion throws.
+      // This is only used in DEV and when replaying is on.
+      var mayReplay = void 0;
+      if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
+        mayReplay = mayReplayFailedUnitOfWork;
+        mayReplayFailedUnitOfWork = true;
+      }
+
       if (nextUnitOfWork === null) {
         // This is a fatal error.
         didFatal = true;
         onUncaughtError(thrownValue);
       } else {
+        if (enableProfilerTimer && nextUnitOfWork.mode & ProfileMode) {
+          // Record the time spent rendering before an error was thrown.
+          // This avoids inaccurate Profiler durations in the case of a suspended render.
+          stopProfilerTimerIfRunningAndRecordDelta(nextUnitOfWork, true);
+        }
+
         {
           // Reset global debug state
           // We assume this is defined in DEV
           resetCurrentlyProcessingQueue();
         }
 
-        var failedUnitOfWork = nextUnitOfWork;
         if (true && replayFailedUnitOfWorkWithInvokeGuardedCallback) {
-          replayUnitOfWork(failedUnitOfWork, thrownValue, isYieldy);
+          if (mayReplay) {
+            var failedUnitOfWork = nextUnitOfWork;
+            replayUnitOfWork(failedUnitOfWork, thrownValue, isYieldy);
+          }
         }
 
         // TODO: we already know this isn't true in some cases.
@@ -14278,15 +16290,16 @@ function renderRoot(root, isYieldy, isExpired) {
     break;
   } while (true);
 
-  if (enableSchedulerTracking) {
-    // Tracked work is done for now; restore the previous interactions.
-    tracking.__interactionsRef.current = prevInteractions;
+  if (enableSchedulerTracing) {
+    // Traced work is done for now; restore the previous interactions.
+    tracing.__interactionsRef.current = prevInteractions;
   }
 
   // We're done performing work. Time to clean up.
   isWorking = false;
   ReactCurrentOwner$2.currentDispatcher = null;
   resetContextDependences();
+  resetHooks();
 
   // Yield back to main thread.
   if (didFatal) {
@@ -14358,7 +16371,7 @@ function renderRoot(root, isYieldy, isExpired) {
       // similar to a suspend, but without a timeout because we're not waiting
       // for a promise to resolve.
       !root.didError &&
-      !isExpired
+      isYieldy
     ) {
       root.didError = true;
       var _suspendedExpirationTime = (root.nextExpirationTimeToWorkOn = expirationTime);
@@ -14374,7 +16387,7 @@ function renderRoot(root, isYieldy, isExpired) {
     }
   }
 
-  if (enableSuspense && !isExpired && nextLatestAbsoluteTimeoutMs !== -1) {
+  if (isYieldy && nextLatestAbsoluteTimeoutMs !== -1) {
     // The tree was suspended.
     var _suspendedExpirationTime2 = expirationTime;
     markSuspendedPriorityLevel(root, _suspendedExpirationTime2);
@@ -14416,21 +16429,16 @@ function renderRoot(root, isYieldy, isExpired) {
   onComplete(root, rootWorkInProgress, expirationTime);
 }
 
-function dispatch(sourceFiber, value, expirationTime) {
-  invariant(
-    !isWorking || isCommitting$1,
-    "dispatch: Cannot dispatch during the render phase."
-  );
-
+function captureCommitPhaseError(sourceFiber, value) {
+  var expirationTime = Sync;
   var fiber = sourceFiber.return;
   while (fiber !== null) {
     switch (fiber.tag) {
       case ClassComponent:
-      case ClassComponentLazy:
         var ctor = fiber.type;
         var instance = fiber.stateNode;
         if (
-          typeof ctor.getDerivedStateFromCatch === "function" ||
+          typeof ctor.getDerivedStateFromError === "function" ||
           (typeof instance.componentDidCatch === "function" &&
             !isAlreadyFailedLegacyErrorBoundary(instance))
         ) {
@@ -14467,10 +16475,6 @@ function dispatch(sourceFiber, value, expirationTime) {
   }
 }
 
-function captureCommitPhaseError(fiber, error) {
-  return dispatch(fiber, error, Sync);
-}
-
 function computeThreadID(expirationTime, interactionThreadID) {
   // Interaction threads are unique per root and expiration time.
   return expirationTime * 1000 + interactionThreadID;
@@ -14494,7 +16498,7 @@ function computeExpirationForFiber(currentTime, fiber) {
   } else {
     // No explicit expiration context was set, and we're not currently
     // performing work. Calculate a new expiration time.
-    if (fiber.mode & AsyncMode) {
+    if (fiber.mode & ConcurrentMode) {
       if (isBatchingInteractiveUpdates) {
         // This is an interactive update
         expirationTime = computeInteractiveExpiration(currentTime);
@@ -14505,7 +16509,7 @@ function computeExpirationForFiber(currentTime, fiber) {
       // If we're in the middle of rendering a tree, do not update at the same
       // expiration time that is already rendering.
       if (nextRoot !== null && expirationTime === nextRenderExpirationTime) {
-        expirationTime += 1;
+        expirationTime -= 1;
       }
     } else {
       // This is a sync update
@@ -14518,7 +16522,7 @@ function computeExpirationForFiber(currentTime, fiber) {
     // all interactive updates when needed.
     if (
       lowestPriorityPendingInteractiveExpirationTime === NoWork ||
-      expirationTime > lowestPriorityPendingInteractiveExpirationTime
+      expirationTime < lowestPriorityPendingInteractiveExpirationTime
     ) {
       lowestPriorityPendingInteractiveExpirationTime = expirationTime;
     }
@@ -14540,159 +16544,168 @@ function renderDidError() {
   nextRenderDidError = true;
 }
 
-function retrySuspendedRoot(root, fiber, suspendedTime) {
-  if (enableSuspense) {
-    var retryTime = void 0;
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = void 0;
 
-    if (isPriorityLevelSuspended(root, suspendedTime)) {
-      // Ping at the original level
-      retryTime = suspendedTime;
-      markPingedPriorityLevel(root, retryTime);
-    } else {
-      // Placeholder already timed out. Compute a new expiration time
-      var currentTime = requestCurrentTime();
-      retryTime = computeExpirationForFiber(currentTime, fiber);
-      markPendingPriorityLevel(root, retryTime);
+  if (isPriorityLevelSuspended(root, suspendedTime)) {
+    // Ping at the original level
+    retryTime = suspendedTime;
+
+    markPingedPriorityLevel(root, retryTime);
+  } else {
+    // Suspense already timed out. Compute a new expiration time
+    var currentTime = requestCurrentTime();
+    retryTime = computeExpirationForFiber(currentTime, boundaryFiber);
+    markPendingPriorityLevel(root, retryTime);
+  }
+
+  // TODO: If the suspense fiber has already rendered the primary children
+  // without suspending (that is, all of the promises have already resolved),
+  // we should not trigger another update here. One case this happens is when
+  // we are in sync mode and a single promise is thrown both on initial render
+  // and on update; we attach two .then(retrySuspendedRoot) callbacks and each
+  // one performs Sync work, rerendering the Suspense.
+
+  if ((boundaryFiber.mode & ConcurrentMode) !== NoContext) {
+    if (root === nextRoot && nextRenderExpirationTime === suspendedTime) {
+      // Received a ping at the same priority level at which we're currently
+      // rendering. Restart from the root.
+      nextRoot = null;
     }
+  }
 
-    scheduleWorkToRoot(fiber, retryTime);
-    var rootExpirationTime = root.expirationTime;
-    if (rootExpirationTime !== NoWork) {
-      if (enableSchedulerTracking) {
-        // Restore previous interactions so that new work is associated with them.
-        var prevInteractions = tracking.__interactionsRef.current;
-        tracking.__interactionsRef.current = root.memoizedInteractions;
-        // Because suspense timeouts do not decrement the interaction count,
-        // Continued suspense work should also not increment the count.
-        storeInteractionsForExpirationTime(root, rootExpirationTime, false);
-        requestWork(root, rootExpirationTime);
-        tracking.__interactionsRef.current = prevInteractions;
-      } else {
-        requestWork(root, rootExpirationTime);
-      }
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  if ((boundaryFiber.mode & ConcurrentMode) === NoContext) {
+    // Outside of concurrent mode, we must schedule an update on the source
+    // fiber, too, since it already committed in an inconsistent state and
+    // therefore does not have any pending work.
+    scheduleWorkToRoot(sourceFiber, retryTime);
+    var sourceTag = sourceFiber.tag;
+    if (sourceTag === ClassComponent && sourceFiber.stateNode !== null) {
+      // When we try rendering again, we should not reuse the current fiber,
+      // since it's known to be in an inconsistent state. Use a force updte to
+      // prevent a bail out.
+      var update = createUpdate(retryTime);
+      update.tag = ForceUpdate;
+      enqueueUpdate(sourceFiber, update);
     }
   }
+
+  var rootExpirationTime = root.expirationTime;
+  if (rootExpirationTime !== NoWork) {
+    requestWork(root, rootExpirationTime);
+  }
 }
 
 function scheduleWorkToRoot(fiber, expirationTime) {
+  recordScheduleUpdate();
+
+  {
+    if (fiber.tag === ClassComponent) {
+      var instance = fiber.stateNode;
+      warnAboutInvalidUpdates(instance);
+    }
+  }
+
   // Update the source fiber's expiration time
-  if (
-    fiber.expirationTime === NoWork ||
-    fiber.expirationTime > expirationTime
-  ) {
+  if (fiber.expirationTime < expirationTime) {
     fiber.expirationTime = expirationTime;
   }
   var alternate = fiber.alternate;
-  if (
-    alternate !== null &&
-    (alternate.expirationTime === NoWork ||
-      alternate.expirationTime > expirationTime)
-  ) {
+  if (alternate !== null && alternate.expirationTime < expirationTime) {
     alternate.expirationTime = expirationTime;
   }
   // Walk the parent path to the root and update the child expiration time.
   var node = fiber.return;
+  var root = null;
   if (node === null && fiber.tag === HostRoot) {
-    return fiber.stateNode;
-  }
-  while (node !== null) {
-    alternate = node.alternate;
-    if (
-      node.childExpirationTime === NoWork ||
-      node.childExpirationTime > expirationTime
-    ) {
-      node.childExpirationTime = expirationTime;
-      if (
+    root = fiber.stateNode;
+  } else {
+    while (node !== null) {
+      alternate = node.alternate;
+      if (node.childExpirationTime < expirationTime) {
+        node.childExpirationTime = expirationTime;
+        if (
+          alternate !== null &&
+          alternate.childExpirationTime < expirationTime
+        ) {
+          alternate.childExpirationTime = expirationTime;
+        }
+      } else if (
         alternate !== null &&
-        (alternate.childExpirationTime === NoWork ||
-          alternate.childExpirationTime > expirationTime)
+        alternate.childExpirationTime < expirationTime
       ) {
         alternate.childExpirationTime = expirationTime;
       }
-    } else if (
-      alternate !== null &&
-      (alternate.childExpirationTime === NoWork ||
-        alternate.childExpirationTime > expirationTime)
-    ) {
-      alternate.childExpirationTime = expirationTime;
-    }
-    if (node.return === null && node.tag === HostRoot) {
-      return node.stateNode;
+      if (node.return === null && node.tag === HostRoot) {
+        root = node.stateNode;
+        break;
+      }
+      node = node.return;
     }
-    node = node.return;
   }
-  return null;
-}
 
-function storeInteractionsForExpirationTime(
-  root,
-  expirationTime,
-  updateInteractionCounts
-) {
-  if (!enableSchedulerTracking) {
-    return;
-  }
+  if (enableSchedulerTracing) {
+    if (root !== null) {
+      var interactions = tracing.__interactionsRef.current;
+      if (interactions.size > 0) {
+        var pendingInteractionMap = root.pendingInteractionMap;
+        var pendingInteractions = pendingInteractionMap.get(expirationTime);
+        if (pendingInteractions != null) {
+          interactions.forEach(function(interaction) {
+            if (!pendingInteractions.has(interaction)) {
+              // Update the pending async work count for previously unscheduled interaction.
+              interaction.__count++;
+            }
 
-  var interactions = tracking.__interactionsRef.current;
-  if (interactions.size > 0) {
-    var pendingInteractions = root.pendingInteractionMap.get(expirationTime);
-    if (pendingInteractions != null) {
-      interactions.forEach(function(interaction) {
-        if (updateInteractionCounts && !pendingInteractions.has(interaction)) {
-          // Update the pending async work count for previously unscheduled interaction.
-          interaction.__count++;
-        }
+            pendingInteractions.add(interaction);
+          });
+        } else {
+          pendingInteractionMap.set(expirationTime, new Set(interactions));
 
-        pendingInteractions.add(interaction);
-      });
-    } else {
-      root.pendingInteractionMap.set(expirationTime, new Set(interactions));
+          // Update the pending async work count for the current interactions.
+          interactions.forEach(function(interaction) {
+            interaction.__count++;
+          });
+        }
 
-      // Update the pending async work count for the current interactions.
-      if (updateInteractionCounts) {
-        interactions.forEach(function(interaction) {
-          interaction.__count++;
-        });
+        var subscriber = tracing.__subscriberRef.current;
+        if (subscriber !== null) {
+          var threadID = computeThreadID(
+            expirationTime,
+            root.interactionThreadID
+          );
+          subscriber.onWorkScheduled(interactions, threadID);
+        }
       }
     }
-
-    var subscriber = tracking.__subscriberRef.current;
-    if (subscriber !== null) {
-      var threadID = computeThreadID(expirationTime, root.interactionThreadID);
-      subscriber.onWorkScheduled(interactions, threadID);
-    }
   }
+  return root;
 }
 
 function scheduleWork(fiber, expirationTime) {
-  recordScheduleUpdate();
-
-  {
-    if (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy) {
-      var instance = fiber.stateNode;
-      warnAboutInvalidUpdates(instance);
-    }
-  }
-
   var root = scheduleWorkToRoot(fiber, expirationTime);
   if (root === null) {
-    if (
-      true &&
-      (fiber.tag === ClassComponent || fiber.tag === ClassComponentLazy)
-    ) {
-      warnAboutUpdateOnUnmounted(fiber);
+    {
+      switch (fiber.tag) {
+        case ClassComponent:
+          warnAboutUpdateOnUnmounted(fiber, true);
+          break;
+        case FunctionComponent:
+        case ForwardRef:
+        case MemoComponent:
+        case SimpleMemoComponent:
+          warnAboutUpdateOnUnmounted(fiber, false);
+          break;
+      }
     }
     return;
   }
 
-  if (enableSchedulerTracking) {
-    storeInteractionsForExpirationTime(root, expirationTime, true);
-  }
-
   if (
     !isWorking &&
     nextRenderExpirationTime !== NoWork &&
-    expirationTime < nextRenderExpirationTime
+    expirationTime > nextRenderExpirationTime
   ) {
     // This is an interruption. (Used for performance tracking.)
     interruptedBy = fiber;
@@ -14736,10 +16749,8 @@ var isRendering = false;
 var nextFlushedRoot = null;
 var nextFlushedExpirationTime = NoWork;
 var lowestPriorityPendingInteractiveExpirationTime = NoWork;
-var deadlineDidExpire = false;
 var hasUnhandledError = false;
 var unhandledError = null;
-var deadline = null;
 
 var isBatchingUpdates = false;
 var isUnbatchingUpdates = false;
@@ -14747,7 +16758,7 @@ var isBatchingInteractiveUpdates = false;
 
 var completedBatches = null;
 
-var originalStartTimeMs = now();
+var originalStartTimeMs = now$$1();
 var currentRendererTime = msToExpirationTime(originalStartTimeMs);
 var currentSchedulerTime = currentRendererTime;
 
@@ -14756,24 +16767,22 @@ var NESTED_UPDATE_LIMIT = 50;
 var nestedUpdateCount = 0;
 var lastCommittedRootDuringThisBatch = null;
 
-var timeHeuristicForUnitOfWork = 1;
-
 function recomputeCurrentRendererTime() {
-  var currentTimeMs = now() - originalStartTimeMs;
+  var currentTimeMs = now$$1() - originalStartTimeMs;
   currentRendererTime = msToExpirationTime(currentTimeMs);
 }
 
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (callbackExpirationTime !== NoWork) {
     // A callback is already scheduled. Check its expiration time (timeout).
-    if (expirationTime > callbackExpirationTime) {
+    if (expirationTime < callbackExpirationTime) {
       // Existing callback has sufficient timeout. Exit.
       return;
     } else {
       if (callbackID !== null) {
         // Existing callback has insufficient timeout. Cancel and schedule a
         // new one.
-        cancelDeferredCallback(callbackID);
+        cancelDeferredCallback$$1(callbackID);
       }
     }
     // The request callback timer is already running. Don't start a new one.
@@ -14782,10 +16791,12 @@ function scheduleCallbackWithExpirationTime(root, expirationTime) {
   }
 
   callbackExpirationTime = expirationTime;
-  var currentMs = now() - originalStartTimeMs;
+  var currentMs = now$$1() - originalStartTimeMs;
   var expirationTimeMs = expirationTimeToMs(expirationTime);
   var timeout = expirationTimeMs - currentMs;
-  callbackID = scheduleDeferredCallback(performAsyncWork, { timeout: timeout });
+  callbackID = scheduleDeferredCallback$$1(performAsyncWork, {
+    timeout: timeout
+  });
 }
 
 // For every call to renderRoot, one of onFatal, onComplete, onSuspend, and
@@ -14809,7 +16820,7 @@ function onSuspend(
   msUntilTimeout
 ) {
   root.expirationTime = rootExpirationTime;
-  if (enableSuspense && msUntilTimeout === 0 && !shouldYield()) {
+  if (msUntilTimeout === 0 && !shouldYieldToRenderer()) {
     // Don't wait an additional tick. Commit the tree immediately.
     root.pendingCommitExpirationTime = suspendedExpirationTime;
     root.finishedWork = finishedWork;
@@ -14827,26 +16838,15 @@ function onYield(root) {
 }
 
 function onTimeout(root, finishedWork, suspendedExpirationTime) {
-  if (enableSuspense) {
-    // The root timed out. Commit it.
-    root.pendingCommitExpirationTime = suspendedExpirationTime;
-    root.finishedWork = finishedWork;
-    // Read the current time before entering the commit phase. We can be
-    // certain this won't cause tearing related to batching of event updates
-    // because we're at the top of a timer event.
-    recomputeCurrentRendererTime();
-    currentSchedulerTime = currentRendererTime;
-
-    if (enableSchedulerTracking) {
-      // Don't update pending interaction counts for suspense timeouts,
-      // Because we know we still need to do more work in this case.
-      suspenseDidTimeout = true;
-      flushRoot(root, suspendedExpirationTime);
-      suspenseDidTimeout = false;
-    } else {
-      flushRoot(root, suspendedExpirationTime);
-    }
-  }
+  // The root timed out. Commit it.
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  // Read the current time before entering the commit phase. We can be
+  // certain this won't cause tearing related to batching of event updates
+  // because we're at the top of a timer event.
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  flushRoot(root, suspendedExpirationTime);
 }
 
 function onCommit(root, expirationTime) {
@@ -14915,7 +16915,7 @@ function requestWork(root, expirationTime) {
       // flush it now.
       nextFlushedRoot = root;
       nextFlushedExpirationTime = Sync;
-      performWorkOnRoot(root, Sync, true);
+      performWorkOnRoot(root, Sync, false);
     }
     return;
   }
@@ -14945,10 +16945,7 @@ function addRootToSchedule(root, expirationTime) {
   } else {
     // This root is already scheduled, but its priority may have increased.
     var remainingExpirationTime = root.expirationTime;
-    if (
-      remainingExpirationTime === NoWork ||
-      expirationTime < remainingExpirationTime
-    ) {
+    if (expirationTime > remainingExpirationTime) {
       // Update the priority.
       root.expirationTime = expirationTime;
     }
@@ -14997,10 +16994,7 @@ function findHighestPriorityRoot() {
         }
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          highestPriorityWork === NoWork ||
-          remainingExpirationTime < highestPriorityWork
-        ) {
+        if (remainingExpirationTime > highestPriorityWork) {
           // Update the priority, if it's higher
           highestPriorityWork = remainingExpirationTime;
           highestPriorityRoot = root;
@@ -15023,43 +17017,60 @@ function findHighestPriorityRoot() {
   nextFlushedExpirationTime = highestPriorityWork;
 }
 
-function performAsyncWork(dl) {
-  if (dl.didTimeout) {
-    // The callback timed out. That means at least one update has expired.
-    // Iterate through the root schedule. If they contain expired work, set
-    // the next render expiration time to the current time. This has the effect
-    // of flushing all expired work in a single batch, instead of flushing each
-    // level one at a time.
-    if (firstScheduledRoot !== null) {
-      recomputeCurrentRendererTime();
-      var root = firstScheduledRoot;
-      do {
-        didExpireAtExpirationTime(root, currentRendererTime);
-        // The root schedule is circular, so this is never null.
-        root = root.nextScheduledRoot;
-      } while (root !== firstScheduledRoot);
+// TODO: This wrapper exists because many of the older tests (the ones that use
+// flushDeferredPri) rely on the number of times `shouldYield` is called. We
+// should get rid of it.
+var didYield = false;
+function shouldYieldToRenderer() {
+  if (didYield) {
+    return true;
+  }
+  if (shouldYield$$1()) {
+    didYield = true;
+    return true;
+  }
+  return false;
+}
+
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer()) {
+      // The callback timed out. That means at least one update has expired.
+      // Iterate through the root schedule. If they contain expired work, set
+      // the next render expiration time to the current time. This has the effect
+      // of flushing all expired work in a single batch, instead of flushing each
+      // level one at a time.
+      if (firstScheduledRoot !== null) {
+        recomputeCurrentRendererTime();
+        var root = firstScheduledRoot;
+        do {
+          didExpireAtExpirationTime(root, currentRendererTime);
+          // The root schedule is circular, so this is never null.
+          root = root.nextScheduledRoot;
+        } while (root !== firstScheduledRoot);
+      }
     }
+    performWork(NoWork, true);
+  } finally {
+    didYield = false;
   }
-  performWork(NoWork, dl);
 }
 
 function performSyncWork() {
-  performWork(Sync, null);
+  performWork(Sync, false);
 }
 
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
-
-  // Keep working on roots until there's no more work, or until we reach
-  // the deadline.
+function performWork(minExpirationTime, isYieldy) {
+  // Keep working on roots until there's no more work, or until there's a higher
+  // priority event.
   findHighestPriorityRoot();
 
-  if (deadline !== null) {
+  if (isYieldy) {
     recomputeCurrentRendererTime();
     currentSchedulerTime = currentRendererTime;
 
     if (enableUserTimingAPI) {
-      var didExpire = nextFlushedExpirationTime < currentRendererTime;
+      var didExpire = nextFlushedExpirationTime > currentRendererTime;
       var timeout = expirationTimeToMs(nextFlushedExpirationTime);
       stopRequestCallbackTimer(didExpire, timeout);
     }
@@ -15067,14 +17078,13 @@ function performWork(minExpirationTime, dl) {
     while (
       nextFlushedRoot !== null &&
       nextFlushedExpirationTime !== NoWork &&
-      (minExpirationTime === NoWork ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime)
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime)
     ) {
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       );
       findHighestPriorityRoot();
       recomputeCurrentRendererTime();
@@ -15084,10 +17094,9 @@ function performWork(minExpirationTime, dl) {
     while (
       nextFlushedRoot !== null &&
       nextFlushedExpirationTime !== NoWork &&
-      (minExpirationTime === NoWork ||
-        minExpirationTime >= nextFlushedExpirationTime)
+      minExpirationTime <= nextFlushedExpirationTime
     ) {
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, true);
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, false);
       findHighestPriorityRoot();
     }
   }
@@ -15096,7 +17105,7 @@ function performWork(minExpirationTime, dl) {
   // or there's no more work left with sufficient priority.
 
   // If we're inside a callback, set this to false since we just completed it.
-  if (deadline !== null) {
+  if (isYieldy) {
     callbackExpirationTime = NoWork;
     callbackID = null;
   }
@@ -15109,9 +17118,6 @@ function performWork(minExpirationTime, dl) {
   }
 
   // Clean-up.
-  deadline = null;
-  deadlineDidExpire = false;
-
   finishRendering();
 }
 
@@ -15126,7 +17132,7 @@ function flushRoot(root, expirationTime) {
   // including the given time.
   nextFlushedRoot = root;
   nextFlushedExpirationTime = expirationTime;
-  performWorkOnRoot(root, expirationTime, true);
+  performWorkOnRoot(root, expirationTime, false);
   // Flush any sync work that was scheduled by lifecycles
   performSyncWork();
 }
@@ -15159,7 +17165,7 @@ function finishRendering() {
   }
 }
 
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused " +
@@ -15169,7 +17175,7 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
   isRendering = true;
 
   // Check if this is async work or sync/expired work.
-  if (deadline === null || isExpired) {
+  if (!isYieldy) {
     // Flush work without yielding.
     // TODO: Non-yieldy work does not necessarily imply expired work. A renderer
     // may want to perform some work without yielding, but also without
@@ -15184,13 +17190,12 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
       // If this root previously suspended, clear its existing timeout, since
       // we're about to try rendering again.
       var timeoutHandle = root.timeoutHandle;
-      if (enableSuspense && timeoutHandle !== noTimeout) {
+      if (timeoutHandle !== noTimeout) {
         root.timeoutHandle = noTimeout;
         // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
         cancelTimeout(timeoutHandle);
       }
-      var isYieldy = false;
-      renderRoot(root, isYieldy, isExpired);
+      renderRoot(root, isYieldy);
       finishedWork = root.finishedWork;
       if (finishedWork !== null) {
         // We've completed the root. Commit it.
@@ -15208,18 +17213,17 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
       // If this root previously suspended, clear its existing timeout, since
       // we're about to try rendering again.
       var _timeoutHandle = root.timeoutHandle;
-      if (enableSuspense && _timeoutHandle !== noTimeout) {
+      if (_timeoutHandle !== noTimeout) {
         root.timeoutHandle = noTimeout;
         // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
         cancelTimeout(_timeoutHandle);
       }
-      var _isYieldy = true;
-      renderRoot(root, _isYieldy, isExpired);
+      renderRoot(root, isYieldy);
       _finishedWork = root.finishedWork;
       if (_finishedWork !== null) {
-        // We've completed the root. Check the deadline one more time
+        // We've completed the root. Check the if we should yield one more time
         // before committing.
-        if (!shouldYield()) {
+        if (!shouldYieldToRenderer()) {
           // Still time left. Commit the root.
           completeRoot(root, _finishedWork, expirationTime);
         } else {
@@ -15237,7 +17241,7 @@ function performWorkOnRoot(root, expirationTime, isExpired) {
 function completeRoot(root, finishedWork, expirationTime) {
   // Check if there's a batch that matches this expiration time.
   var firstBatch = root.firstBatch;
-  if (firstBatch !== null && firstBatch._expirationTime <= expirationTime) {
+  if (firstBatch !== null && firstBatch._expirationTime >= expirationTime) {
     if (completedBatches === null) {
       completedBatches = [firstBatch];
     } else {
@@ -15269,24 +17273,6 @@ function completeRoot(root, finishedWork, expirationTime) {
   commitRoot(root, finishedWork);
 }
 
-// When working on async work, the reconciler asks the renderer if it should
-// yield execution. For DOM, we implement this with requestIdleCallback.
-function shouldYield() {
-  if (deadlineDidExpire) {
-    return true;
-  }
-  if (
-    deadline === null ||
-    deadline.timeRemaining() > timeHeuristicForUnitOfWork
-  ) {
-    // Disregard deadline.didTimeout. Only expired work should be flushed
-    // during a timeout. This path is only hit for non-expired work.
-    return false;
-  }
-  deadlineDidExpire = true;
-  return true;
-}
-
 function onUncaughtError(error) {
   invariant(
     nextFlushedRoot !== null,
@@ -15331,7 +17317,7 @@ function interactiveUpdates$1(fn, a, b) {
     lowestPriorityPendingInteractiveExpirationTime !== NoWork
   ) {
     // Synchronously flush pending interactive updates.
-    performWork(lowestPriorityPendingInteractiveExpirationTime, null);
+    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
     lowestPriorityPendingInteractiveExpirationTime = NoWork;
   }
   var previousIsBatchingInteractiveUpdates = isBatchingInteractiveUpdates;
@@ -15355,7 +17341,7 @@ function flushInteractiveUpdates$1() {
     lowestPriorityPendingInteractiveExpirationTime !== NoWork
   ) {
     // Synchronously flush pending interactive updates.
-    performWork(lowestPriorityPendingInteractiveExpirationTime, null);
+    performWork(lowestPriorityPendingInteractiveExpirationTime, false);
     lowestPriorityPendingInteractiveExpirationTime = NoWork;
   }
 }
@@ -15364,9 +17350,11 @@ function flushInteractiveUpdates$1() {
 // Might add PROFILE later.
 
 var didWarnAboutNestedUpdates = void 0;
+var didWarnAboutFindNodeInStrictMode = void 0;
 
 {
   didWarnAboutNestedUpdates = false;
+  didWarnAboutFindNodeInStrictMode = {};
 }
 
 function getContextForSubtree(parentComponent) {
@@ -15382,11 +17370,6 @@ function getContextForSubtree(parentComponent) {
     if (isContextProvider(Component)) {
       return processChildContext(fiber, Component, parentContext);
     }
-  } else if (fiber.tag === ClassComponentLazy) {
-    var _Component = getResultFromResolvedThenable(fiber.type);
-    if (isContextProvider(_Component)) {
-      return processChildContext(fiber, _Component, parentContext);
-    }
   }
 
   return parentContext;
@@ -15424,9 +17407,11 @@ function scheduleRootUpdate(current$$1, element, expirationTime, callback) {
       : void 0;
     update.callback = callback;
   }
-  enqueueUpdate(current$$1, update);
 
+  flushPassiveEffects();
+  enqueueUpdate(current$$1, update);
   scheduleWork(current$$1, expirationTime);
+
   return expirationTime;
 }
 
@@ -15462,7 +17447,7 @@ function updateContainerAtExpirationTime(
   return scheduleRootUpdate(current$$1, element, expirationTime, callback);
 }
 
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = get$1(component);
   if (fiber === undefined) {
     if (typeof component.render === "function") {
@@ -15482,8 +17467,66 @@ function findHostInstance$1(component) {
   return hostFiber.stateNode;
 }
 
-function createContainer(containerInfo, isAsync, hydrate) {
-  return createFiberRoot(containerInfo, isAsync, hydrate);
+function findHostInstanceWithWarning(component, methodName) {
+  {
+    var fiber = get$1(component);
+    if (fiber === undefined) {
+      if (typeof component.render === "function") {
+        invariant(false, "Unable to find node on an unmounted component.");
+      } else {
+        invariant(
+          false,
+          "Argument appears to not be a ReactComponent. Keys: %s",
+          Object.keys(component)
+        );
+      }
+    }
+    var hostFiber = findCurrentHostFiber(fiber);
+    if (hostFiber === null) {
+      return null;
+    }
+    if (hostFiber.mode & StrictMode) {
+      var componentName = getComponentName(fiber.type) || "Component";
+      if (!didWarnAboutFindNodeInStrictMode[componentName]) {
+        didWarnAboutFindNodeInStrictMode[componentName] = true;
+        if (fiber.mode & StrictMode) {
+          warningWithoutStack$1(
+            false,
+            "%s is deprecated in StrictMode. " +
+              "%s was passed an instance of %s which is inside StrictMode. " +
+              "Instead, add a ref directly to the element you want to reference." +
+              "\n%s" +
+              "\n\nLearn more about using refs safely here:" +
+              "\nhttps://fb.me/react-strict-mode-find-node",
+            methodName,
+            methodName,
+            componentName,
+            getStackByFiberInDevAndProd(hostFiber)
+          );
+        } else {
+          warningWithoutStack$1(
+            false,
+            "%s is deprecated in StrictMode. " +
+              "%s was passed an instance of %s which renders StrictMode children. " +
+              "Instead, add a ref directly to the element you want to reference." +
+              "\n%s" +
+              "\n\nLearn more about using refs safely here:" +
+              "\nhttps://fb.me/react-strict-mode-find-node",
+            methodName,
+            methodName,
+            componentName,
+            getStackByFiberInDevAndProd(hostFiber)
+          );
+        }
+      }
+    }
+    return hostFiber.stateNode;
+  }
+  return findHostInstance(component);
+}
+
+function createContainer(containerInfo, isConcurrent, hydrate) {
+  return createFiberRoot(containerInfo, isConcurrent, hydrate);
 }
 
 function updateContainer(element, container, parentComponent, callback) {
@@ -15559,7 +17602,7 @@ function createPortal(
 
 // TODO: this is special because it gets imported during build.
 
-var ReactVersion = "16.5.0";
+var ReactVersion = "16.6.1";
 
 // Modules provided by RN:
 var NativeMethodsMixin = function(findNodeHandle, findHostInstance) {
@@ -15955,9 +17998,9 @@ var ReactNativeComponent = function(findNodeHandle, findHostInstance) {
 };
 
 // Module provided by RN:
-var emptyObject$2 = {};
+var emptyObject$1 = {};
 {
-  Object.freeze(emptyObject$2);
+  Object.freeze(emptyObject$1);
 }
 
 var getInspectorDataForViewTag = void 0;
@@ -15990,9 +18033,9 @@ var getInspectorDataForViewTag = void 0;
   var getHostProps = function(fiber) {
     var host = findCurrentHostFiber(fiber);
     if (host) {
-      return host.memoizedProps || emptyObject$2;
+      return host.memoizedProps || emptyObject$1;
     }
-    return emptyObject$2;
+    return emptyObject$1;
   };
 
   var getHostNode = function(fiber, findNodeHandle) {
@@ -16038,7 +18081,7 @@ var getInspectorDataForViewTag = void 0;
     if (!closestInstance) {
       return {
         hierarchy: [],
-        props: emptyObject$2,
+        props: emptyObject$1,
         selection: null,
         source: null
       };
@@ -16064,7 +18107,6 @@ var getInspectorDataForViewTag = void 0;
 // TODO: direct imports like some-package/src/* are bad. Fix me.
 // Module provided by RN:
 var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
-var findHostInstance = findHostInstance$1;
 
 function findNodeHandle(componentOrHandle) {
   {
@@ -16098,7 +18140,14 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag) {
     return componentOrHandle.canonical._nativeTag;
   }
-  var hostInstance = findHostInstance(componentOrHandle);
+  var hostInstance = void 0;
+  {
+    hostInstance = findHostInstanceWithWarning(
+      componentOrHandle,
+      "findNodeHandle"
+    );
+  }
+
   if (hostInstance == null) {
     return hostInstance;
   }
diff --git a/Libraries/Renderer/oss/ReactNativeRenderer-prod.js b/Libraries/Renderer/oss/ReactNativeRenderer-prod.js
index cc861113ff7b7d..e9268b6d2dd2e5 100644
--- a/Libraries/Renderer/oss/ReactNativeRenderer-prod.js
+++ b/Libraries/Renderer/oss/ReactNativeRenderer-prod.js
@@ -19,7 +19,8 @@ var ReactNativeViewConfigRegistry = require("ReactNativeViewConfigRegistry"),
   deepDiffer = require("deepDiffer"),
   flattenStyle = require("flattenStyle"),
   TextInputState = require("TextInputState");
-var ExceptionsManager = require("ExceptionsManager");
+var scheduler = require("scheduler"),
+  ExceptionsManager = require("ExceptionsManager");
 function invariant(condition, format, a, b, c, d, e, f) {
   if (!condition) {
     condition = void 0;
@@ -166,10 +167,10 @@ var plugins = [],
   getFiberCurrentPropsFromNode = null,
   getInstanceFromNode = null,
   getNodeFromInstance = null;
-function executeDispatch(event, simulated, listener, inst) {
-  simulated = event.type || "unknown-event";
+function executeDispatch(event, listener, inst) {
+  var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
-  invokeGuardedCallbackAndCatchFirstError(simulated, listener, void 0, event);
+  invokeGuardedCallbackAndCatchFirstError(type, listener, void 0, event);
   event.currentTarget = null;
 }
 function executeDirectDispatch(event) {
@@ -215,10 +216,10 @@ function executeDispatchesAndReleaseTopLevel(e) {
         i < dispatchListeners.length && !e.isPropagationStopped();
         i++
       )
-        executeDispatch(e, !1, dispatchListeners[i], dispatchInstances[i]);
+        executeDispatch(e, dispatchListeners[i], dispatchInstances[i]);
     else
       dispatchListeners &&
-        executeDispatch(e, !1, dispatchListeners, dispatchInstances);
+        executeDispatch(e, dispatchListeners, dispatchInstances);
     e._dispatchListeners = null;
     e._dispatchInstances = null;
     e.isPersistent() || e.constructor.release(e);
@@ -293,7 +294,7 @@ function getListener(inst, registrationName) {
 }
 function getParent(inst) {
   do inst = inst.return;
-  while (inst && 7 !== inst.tag);
+  while (inst && 5 !== inst.tag);
   return inst ? inst : null;
 }
 function traverseTwoPhase(inst, fn, arg) {
@@ -955,10 +956,6 @@ var eventTypes$1 = {
       }
     }
   },
-  customBubblingEventTypes$1 =
-    ReactNativeViewConfigRegistry.customBubblingEventTypes,
-  customDirectEventTypes$1 =
-    ReactNativeViewConfigRegistry.customDirectEventTypes,
   ReactNativeBridgeEventPlugin = {
     eventTypes: ReactNativeViewConfigRegistry.eventTypes,
     extractEvents: function(
@@ -968,8 +965,10 @@ var eventTypes$1 = {
       nativeEventTarget
     ) {
       if (null == targetInst) return null;
-      var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType],
-        directDispatchConfig = customDirectEventTypes$1[topLevelType];
+      var bubbleDispatchConfig =
+          ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType],
+        directDispatchConfig =
+          ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
       invariant(
         bubbleDispatchConfig || directDispatchConfig,
         'Unsupported top level event type "%s" dispatched',
@@ -1076,9 +1075,6 @@ function _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam) {
   });
 }
 RCTEventEmitter.register({
-  getListener: getListener,
-  registrationNames: registrationNameModules,
-  _receiveRootNodeIDEvent: _receiveRootNodeIDEvent,
   receiveEvent: function(rootNodeID, topLevelType, nativeEventParam) {
     _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam);
   },
@@ -1142,9 +1138,13 @@ var ReactSharedInternals =
   REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 60114,
   REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 60109,
   REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 60110,
-  REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 60111,
+  REACT_CONCURRENT_MODE_TYPE = hasSymbol
+    ? Symbol.for("react.concurrent_mode")
+    : 60111,
   REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for("react.forward_ref") : 60112,
-  REACT_PLACEHOLDER_TYPE = hasSymbol ? Symbol.for("react.placeholder") : 60113,
+  REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 60113,
+  REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 60115,
+  REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 60116,
   MAYBE_ITERATOR_SYMBOL = "function" === typeof Symbol && Symbol.iterator;
 function getIteratorFn(maybeIterable) {
   if (null === maybeIterable || "object" !== typeof maybeIterable) return null;
@@ -1158,8 +1158,8 @@ function getComponentName(type) {
   if ("function" === typeof type) return type.displayName || type.name || null;
   if ("string" === typeof type) return type;
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -1168,28 +1168,28 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
-  if ("object" === typeof type) {
+  if ("object" === typeof type)
     switch (type.$$typeof) {
       case REACT_CONTEXT_TYPE:
         return "Context.Consumer";
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
+        var innerType = type.render;
+        innerType = innerType.displayName || innerType.name || "";
         return (
-          (type = type.render),
-          (type = type.displayName || type.name || ""),
-          "" !== type ? "ForwardRef(" + type + ")" : "ForwardRef"
+          type.displayName ||
+          ("" !== innerType ? "ForwardRef(" + innerType + ")" : "ForwardRef")
         );
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE:
+        if ((type = 1 === type._status ? type._result : null))
+          return getComponentName(type);
     }
-    if (
-      "function" === typeof type.then &&
-      (type = 1 === type._reactStatus ? type._reactResult : null)
-    )
-      return getComponentName(type);
-  }
   return null;
 }
 function isFiberMountedImpl(fiber) {
@@ -1200,7 +1200,7 @@ function isFiberMountedImpl(fiber) {
     for (; node.return; )
       if (((node = node.return), 0 !== (node.effectTag & 2))) return 1;
   }
-  return 5 === node.tag ? 2 : 3;
+  return 3 === node.tag ? 2 : 3;
 }
 function assertIsMounted(fiber) {
   invariant(
@@ -1276,14 +1276,14 @@ function findCurrentFiberUsingSlowPath(fiber) {
       "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue."
     );
   }
-  invariant(5 === a.tag, "Unable to find node on an unmounted component.");
+  invariant(3 === a.tag, "Unable to find node on an unmounted component.");
   return a.stateNode.current === a ? fiber : alternate;
 }
 function findCurrentHostFiber(parent) {
   parent = findCurrentFiberUsingSlowPath(parent);
   if (!parent) return null;
   for (var node = parent; ; ) {
-    if (7 === node.tag || 8 === node.tag) return node;
+    if (5 === node.tag || 6 === node.tag) return node;
     if (node.child) (node.child.return = node), (node = node.child);
     else {
       if (node === parent) break;
@@ -1591,23 +1591,17 @@ var ReactNativeFiberHostComponent = (function() {
           return Date.now();
         },
   scheduledCallback = null,
-  frameDeadline = 0,
-  frameDeadlineObject = {
-    timeRemaining: function() {
-      return frameDeadline - now$1();
-    },
-    didTimeout: !1
-  };
+  frameDeadline = 0;
 function setTimeoutCallback() {
   frameDeadline = now$1() + 5;
   var callback = scheduledCallback;
   scheduledCallback = null;
-  null !== callback && callback(frameDeadlineObject);
+  null !== callback && callback();
 }
 function shim$1() {
   invariant(
     !1,
-    "The current renderer does not support hyration. This error is likely caused by a bug in React. Please file an issue."
+    "The current renderer does not support hydration. This error is likely caused by a bug in React. Please file an issue."
   );
 }
 var UPDATE_SIGNAL = {},
@@ -1636,22 +1630,26 @@ function finalizeInitialChildren(parentInstance) {
   UIManager.setChildren(parentInstance._nativeTag, nativeTags);
   return !1;
 }
-var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+var scheduleTimeout = setTimeout,
+  cancelTimeout = clearTimeout,
+  BEFORE_SLASH_RE = /^(.*)[\\\/]/;
 function getStackByFiberInDevAndProd(workInProgress) {
   var info = "";
   do {
     a: switch (workInProgress.tag) {
-      case 4:
-      case 0:
-      case 1:
-      case 2:
       case 3:
+      case 4:
+      case 6:
       case 7:
       case 10:
+      case 9:
+        var JSCompiler_inline_result = "";
+        break a;
+      default:
         var owner = workInProgress._debugOwner,
           source = workInProgress._debugSource,
           name = getComponentName(workInProgress.type);
-        var JSCompiler_inline_result = null;
+        JSCompiler_inline_result = null;
         owner && (JSCompiler_inline_result = getComponentName(owner.type));
         owner = name;
         name = "";
@@ -1665,9 +1663,6 @@ function getStackByFiberInDevAndProd(workInProgress) {
           : JSCompiler_inline_result &&
             (name = " (created by " + JSCompiler_inline_result + ")");
         JSCompiler_inline_result = "\n    in " + (owner || "Unknown") + name;
-        break a;
-      default:
-        JSCompiler_inline_result = "";
     }
     info += JSCompiler_inline_result;
     workInProgress = workInProgress.return;
@@ -1798,7 +1793,7 @@ function injectInternals(internals) {
 function FiberNode(tag, pendingProps, key, mode) {
   this.tag = tag;
   this.key = key;
-  this.sibling = this.child = this.return = this.stateNode = this.type = null;
+  this.sibling = this.child = this.return = this.stateNode = this.type = this.elementType = null;
   this.index = 0;
   this.ref = null;
   this.pendingProps = pendingProps;
@@ -1809,19 +1804,33 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.childExpirationTime = this.expirationTime = 0;
   this.alternate = null;
 }
+function createFiber(tag, pendingProps, key, mode) {
+  return new FiberNode(tag, pendingProps, key, mode);
+}
 function shouldConstruct(Component) {
   Component = Component.prototype;
   return !(!Component || !Component.isReactComponent);
 }
-function createWorkInProgress(current, pendingProps, expirationTime) {
+function resolveLazyComponentTag(Component) {
+  if ("function" === typeof Component)
+    return shouldConstruct(Component) ? 1 : 0;
+  if (void 0 !== Component && null !== Component) {
+    Component = Component.$$typeof;
+    if (Component === REACT_FORWARD_REF_TYPE) return 11;
+    if (Component === REACT_MEMO_TYPE) return 14;
+  }
+  return 2;
+}
+function createWorkInProgress(current, pendingProps) {
   var workInProgress = current.alternate;
   null === workInProgress
-    ? ((workInProgress = new FiberNode(
+    ? ((workInProgress = createFiber(
         current.tag,
         pendingProps,
         current.key,
         current.mode
       )),
+      (workInProgress.elementType = current.elementType),
       (workInProgress.type = current.type),
       (workInProgress.stateNode = current.stateNode),
       (workInProgress.alternate = current),
@@ -1832,10 +1841,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       (workInProgress.firstEffect = null),
       (workInProgress.lastEffect = null));
   workInProgress.childExpirationTime = current.childExpirationTime;
-  workInProgress.expirationTime =
-    pendingProps !== current.pendingProps
-      ? expirationTime
-      : current.expirationTime;
+  workInProgress.expirationTime = current.expirationTime;
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
   workInProgress.memoizedState = current.memoizedState;
@@ -1846,57 +1852,66 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   workInProgress.ref = current.ref;
   return workInProgress;
 }
-function createFiberFromElement(element, mode, expirationTime) {
-  var type = element.type,
-    key = element.key;
-  element = element.props;
-  var fiberTag = void 0;
-  if ("function" === typeof type) fiberTag = shouldConstruct(type) ? 2 : 4;
-  else if ("string" === typeof type) fiberTag = 7;
+function createFiberFromTypeAndProps(
+  type,
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
+  var fiberTag = 2;
+  owner = type;
+  if ("function" === typeof type) shouldConstruct(type) && (fiberTag = 1);
+  else if ("string" === typeof type) fiberTag = 5;
   else
     a: switch (type) {
       case REACT_FRAGMENT_TYPE:
         return createFiberFromFragment(
-          element.children,
+          pendingProps.children,
           mode,
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 3;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(pendingProps, mode | 3, expirationTime, key);
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 2;
-        break;
+        return createFiberFromMode(pendingProps, mode | 2, expirationTime, key);
       case REACT_PROFILER_TYPE:
         return (
-          (type = new FiberNode(15, element, key, mode | 4)),
+          (type = createFiber(12, pendingProps, key, mode | 4)),
+          (type.elementType = REACT_PROFILER_TYPE),
           (type.type = REACT_PROFILER_TYPE),
           (type.expirationTime = expirationTime),
           type
         );
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = 16;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return (
+          (type = createFiber(13, pendingProps, key, mode)),
+          (type.elementType = REACT_SUSPENSE_TYPE),
+          (type.type = REACT_SUSPENSE_TYPE),
+          (type.expirationTime = expirationTime),
+          type
+        );
       default:
         if ("object" === typeof type && null !== type)
           switch (type.$$typeof) {
             case REACT_PROVIDER_TYPE:
-              fiberTag = 12;
+              fiberTag = 10;
               break a;
             case REACT_CONTEXT_TYPE:
-              fiberTag = 11;
+              fiberTag = 9;
               break a;
             case REACT_FORWARD_REF_TYPE:
-              fiberTag = 13;
+              fiberTag = 11;
+              break a;
+            case REACT_MEMO_TYPE:
+              fiberTag = 14;
+              break a;
+            case REACT_LAZY_TYPE:
+              fiberTag = 16;
+              owner = null;
               break a;
-            default:
-              if ("function" === typeof type.then) {
-                fiberTag = 4;
-                break a;
-              }
           }
         invariant(
           !1,
@@ -1905,24 +1920,33 @@ function createFiberFromElement(element, mode, expirationTime) {
           ""
         );
     }
-  mode = new FiberNode(fiberTag, element, key, mode);
-  mode.type = type;
-  mode.expirationTime = expirationTime;
-  return mode;
+  key = createFiber(fiberTag, pendingProps, key, mode);
+  key.elementType = type;
+  key.type = owner;
+  key.expirationTime = expirationTime;
+  return key;
 }
 function createFiberFromFragment(elements, mode, expirationTime, key) {
-  elements = new FiberNode(9, elements, key, mode);
+  elements = createFiber(7, elements, key, mode);
   elements.expirationTime = expirationTime;
   return elements;
 }
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  pendingProps = createFiber(8, pendingProps, key, mode);
+  mode = 0 === (mode & 1) ? REACT_STRICT_MODE_TYPE : REACT_CONCURRENT_MODE_TYPE;
+  pendingProps.elementType = mode;
+  pendingProps.type = mode;
+  pendingProps.expirationTime = expirationTime;
+  return pendingProps;
+}
 function createFiberFromText(content, mode, expirationTime) {
-  content = new FiberNode(8, content, null, mode);
+  content = createFiber(6, content, null, mode);
   content.expirationTime = expirationTime;
   return content;
 }
 function createFiberFromPortal(portal, mode, expirationTime) {
-  mode = new FiberNode(
-    6,
+  mode = createFiber(
+    4,
     null !== portal.children ? portal.children : [],
     portal.key,
     mode
@@ -1940,12 +1964,45 @@ function markPendingPriorityLevel(root, expirationTime) {
   var earliestPendingTime = root.earliestPendingTime;
   0 === earliestPendingTime
     ? (root.earliestPendingTime = root.latestPendingTime = expirationTime)
-    : earliestPendingTime > expirationTime
+    : earliestPendingTime < expirationTime
       ? (root.earliestPendingTime = expirationTime)
-      : root.latestPendingTime < expirationTime &&
+      : root.latestPendingTime > expirationTime &&
         (root.latestPendingTime = expirationTime);
   findNextExpirationTimeToWorkOn(expirationTime, root);
 }
+function markSuspendedPriorityLevel(root, suspendedTime) {
+  root.didError = !1;
+  var latestPingedTime = root.latestPingedTime;
+  0 !== latestPingedTime &&
+    latestPingedTime >= suspendedTime &&
+    (root.latestPingedTime = 0);
+  latestPingedTime = root.earliestPendingTime;
+  var latestPendingTime = root.latestPendingTime;
+  latestPingedTime === suspendedTime
+    ? (root.earliestPendingTime =
+        latestPendingTime === suspendedTime
+          ? (root.latestPendingTime = 0)
+          : latestPendingTime)
+    : latestPendingTime === suspendedTime &&
+      (root.latestPendingTime = latestPingedTime);
+  latestPingedTime = root.earliestSuspendedTime;
+  latestPendingTime = root.latestSuspendedTime;
+  0 === latestPingedTime
+    ? (root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime)
+    : latestPingedTime < suspendedTime
+      ? (root.earliestSuspendedTime = suspendedTime)
+      : latestPendingTime > suspendedTime &&
+        (root.latestSuspendedTime = suspendedTime);
+  findNextExpirationTimeToWorkOn(suspendedTime, root);
+}
+function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
+  var earliestPendingTime = root.earliestPendingTime;
+  root = root.earliestSuspendedTime;
+  earliestPendingTime > renderExpirationTime &&
+    (renderExpirationTime = earliestPendingTime);
+  root > renderExpirationTime && (renderExpirationTime = root);
+  return renderExpirationTime;
+}
 function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   var earliestSuspendedTime = root.earliestSuspendedTime,
     latestSuspendedTime = root.latestSuspendedTime,
@@ -1955,12 +2012,11 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
     0 !== earliestPendingTime ? earliestPendingTime : latestPingedTime;
   0 === earliestPendingTime &&
     (0 === completedExpirationTime ||
-      latestSuspendedTime > completedExpirationTime) &&
+      latestSuspendedTime < completedExpirationTime) &&
     (earliestPendingTime = latestSuspendedTime);
   completedExpirationTime = earliestPendingTime;
   0 !== completedExpirationTime &&
-    0 !== earliestSuspendedTime &&
-    earliestSuspendedTime < completedExpirationTime &&
+    earliestSuspendedTime > completedExpirationTime &&
     (completedExpirationTime = earliestSuspendedTime);
   root.nextExpirationTimeToWorkOn = earliestPendingTime;
   root.expirationTime = completedExpirationTime;
@@ -2072,7 +2128,7 @@ function getStateFromUpdate(
           : workInProgress
       );
     case 3:
-      workInProgress.effectTag = (workInProgress.effectTag & -1025) | 64;
+      workInProgress.effectTag = (workInProgress.effectTag & -2049) | 64;
     case 0:
       workInProgress = update.payload;
       nextProps =
@@ -2105,58 +2161,52 @@ function processUpdateQueue(
 
   ) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === newFirstUpdate &&
+    updateExpirationTime < renderExpirationTime
+      ? (null === newFirstUpdate &&
           ((newFirstUpdate = update), (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > updateExpirationTime)
-      )
-        newExpirationTime = updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < updateExpirationTime &&
+          (newExpirationTime = updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastEffect
             ? (queue.firstEffect = queue.lastEffect = update)
             : ((queue.lastEffect.nextEffect = update),
-              (queue.lastEffect = update)));
+              (queue.lastEffect = update))));
     update = update.next;
   }
   updateExpirationTime = null;
   for (update = queue.firstCapturedUpdate; null !== update; ) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === updateExpirationTime &&
+    _updateExpirationTime < renderExpirationTime
+      ? (null === updateExpirationTime &&
           ((updateExpirationTime = update),
           null === newFirstUpdate && (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > _updateExpirationTime)
-      )
-        newExpirationTime = _updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < _updateExpirationTime &&
+          (newExpirationTime = _updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastCapturedEffect
             ? (queue.firstCapturedEffect = queue.lastCapturedEffect = update)
             : ((queue.lastCapturedEffect.nextEffect = update),
-              (queue.lastCapturedEffect = update)));
+              (queue.lastCapturedEffect = update))));
     update = update.next;
   }
   null === newFirstUpdate && (queue.lastUpdate = null);
@@ -2237,7 +2287,7 @@ function readContext(context, observedBits) {
     null === lastContextDependency
       ? (invariant(
           null !== currentlyRenderingFiber,
-          "Context.unstable_read(): Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
+          "Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
         ),
         (currentlyRenderingFiber.firstContextDependency = lastContextDependency = observedBits))
       : (lastContextDependency = lastContextDependency.next = observedBits);
@@ -2313,7 +2363,47 @@ function shallowEqual(objA, objB) {
       return !1;
   return !0;
 }
-var emptyRefsObject = new React.Component().refs;
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    baseProps = Object.assign({}, baseProps);
+    Component = Component.defaultProps;
+    for (var propName in Component)
+      void 0 === baseProps[propName] &&
+        (baseProps[propName] = Component[propName]);
+  }
+  return baseProps;
+}
+function readLazyComponentType(lazyComponent) {
+  var result = lazyComponent._result;
+  switch (lazyComponent._status) {
+    case 1:
+      return result;
+    case 2:
+      throw result;
+    case 0:
+      throw result;
+    default:
+      throw ((lazyComponent._status = 0),
+      (result = lazyComponent._ctor),
+      (result = result()),
+      result.then(
+        function(moduleObject) {
+          0 === lazyComponent._status &&
+            ((moduleObject = moduleObject.default),
+            (lazyComponent._status = 1),
+            (lazyComponent._result = moduleObject));
+        },
+        function(error) {
+          0 === lazyComponent._status &&
+            ((lazyComponent._status = 2), (lazyComponent._result = error));
+        }
+      ),
+      (lazyComponent._result = result),
+      result);
+  }
+}
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner,
+  emptyRefsObject = new React.Component().refs;
 function applyDerivedStateFromProps(
   workInProgress,
   ctor,
@@ -2345,6 +2435,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2356,6 +2447,7 @@ var classComponentUpdater = {
     update.tag = 1;
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2366,6 +2458,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.tag = 2;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   }
@@ -2377,30 +2470,52 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = workInProgress.stateNode;
   return "function" === typeof workInProgress.shouldComponentUpdate
-    ? workInProgress.shouldComponentUpdate(
-        newProps,
-        newState,
-        nextLegacyContext
-      )
+    ? workInProgress.shouldComponentUpdate(newProps, newState, nextContext)
     : ctor.prototype && ctor.prototype.isPureReactComponent
       ? !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState)
       : !0;
 }
+function constructClassInstance(workInProgress, ctor, props) {
+  var isLegacyContextConsumer = !1,
+    unmaskedContext = emptyContextObject;
+  var context = ctor.contextType;
+  "object" === typeof context && null !== context
+    ? (context = ReactCurrentOwner$4.currentDispatcher.readContext(context))
+    : ((unmaskedContext = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (isLegacyContextConsumer = ctor.contextTypes),
+      (context = (isLegacyContextConsumer =
+        null !== isLegacyContextConsumer && void 0 !== isLegacyContextConsumer)
+        ? getMaskedContext(workInProgress, unmaskedContext)
+        : emptyContextObject));
+  ctor = new ctor(props, context);
+  workInProgress.memoizedState =
+    null !== ctor.state && void 0 !== ctor.state ? ctor.state : null;
+  ctor.updater = classComponentUpdater;
+  workInProgress.stateNode = ctor;
+  ctor._reactInternalFiber = workInProgress;
+  isLegacyContextConsumer &&
+    ((workInProgress = workInProgress.stateNode),
+    (workInProgress.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
+    (workInProgress.__reactInternalMemoizedMaskedChildContext = context));
+  return ctor;
+}
 function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = instance.state;
   "function" === typeof instance.componentWillReceiveProps &&
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   "function" === typeof instance.UNSAFE_componentWillReceiveProps &&
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   instance.state !== workInProgress &&
     classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
 }
@@ -2410,32 +2525,32 @@ function mountClassInstance(
   newProps,
   renderExpirationTime
 ) {
-  var instance = workInProgress.stateNode,
-    unmaskedContext = isContextProvider(ctor)
-      ? previousContext
-      : contextStackCursor.current;
+  var instance = workInProgress.stateNode;
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
-  unmaskedContext = workInProgress.updateQueue;
-  null !== unmaskedContext &&
+  var contextType = ctor.contextType;
+  "object" === typeof contextType && null !== contextType
+    ? (instance.context = ReactCurrentOwner$4.currentDispatcher.readContext(
+        contextType
+      ))
+    : ((contextType = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (instance.context = getMaskedContext(workInProgress, contextType)));
+  contextType = workInProgress.updateQueue;
+  null !== contextType &&
     (processUpdateQueue(
       workInProgress,
-      unmaskedContext,
+      contextType,
       newProps,
       instance,
       renderExpirationTime
     ),
     (instance.state = workInProgress.memoizedState));
-  unmaskedContext = ctor.getDerivedStateFromProps;
-  "function" === typeof unmaskedContext &&
-    (applyDerivedStateFromProps(
-      workInProgress,
-      ctor,
-      unmaskedContext,
-      newProps
-    ),
+  contextType = ctor.getDerivedStateFromProps;
+  "function" === typeof contextType &&
+    (applyDerivedStateFromProps(workInProgress, ctor, contextType, newProps),
     (instance.state = workInProgress.memoizedState));
   "function" === typeof ctor.getDerivedStateFromProps ||
     "function" === typeof instance.getSnapshotBeforeUpdate ||
@@ -2448,11 +2563,11 @@ function mountClassInstance(
       instance.UNSAFE_componentWillMount(),
     ctor !== instance.state &&
       classComponentUpdater.enqueueReplaceState(instance, instance.state, null),
-    (unmaskedContext = workInProgress.updateQueue),
-    null !== unmaskedContext &&
+    (contextType = workInProgress.updateQueue),
+    null !== contextType &&
       (processUpdateQueue(
         workInProgress,
-        unmaskedContext,
+        contextType,
         newProps,
         instance,
         renderExpirationTime
@@ -2461,7 +2576,7 @@ function mountClassInstance(
   "function" === typeof instance.componentDidMount &&
     (workInProgress.effectTag |= 4);
 }
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 function coerceRef(returnFiber, current$$1, element) {
   returnFiber = element.ref;
   if (
@@ -2473,10 +2588,7 @@ function coerceRef(returnFiber, current$$1, element) {
       element = element._owner;
       var inst = void 0;
       element &&
-        (invariant(
-          2 === element.tag || 3 === element.tag,
-          "Stateless function components cannot have refs."
-        ),
+        (invariant(1 === element.tag, "Function components cannot have refs."),
         (inst = element.stateNode));
       invariant(
         inst,
@@ -2505,7 +2617,7 @@ function coerceRef(returnFiber, current$$1, element) {
     );
     invariant(
       element._owner,
-      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a functional component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
+      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
       returnFiber
     );
   }
@@ -2581,7 +2693,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     textContent,
     expirationTime
   ) {
-    if (null === current$$1 || 8 !== current$$1.tag)
+    if (null === current$$1 || 6 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromText(
           textContent,
@@ -2596,15 +2708,18 @@ function ChildReconciler(shouldTrackSideEffects) {
     return current$$1;
   }
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (null !== current$$1 && current$$1.type === element.type)
+    if (null !== current$$1 && current$$1.elementType === element.type)
       return (
         (expirationTime = useFiber(current$$1, element.props, expirationTime)),
         (expirationTime.ref = coerceRef(returnFiber, current$$1, element)),
         (expirationTime.return = returnFiber),
         expirationTime
       );
-    expirationTime = createFiberFromElement(
-      element,
+    expirationTime = createFiberFromTypeAndProps(
+      element.type,
+      element.key,
+      element.props,
+      null,
       returnFiber.mode,
       expirationTime
     );
@@ -2615,7 +2730,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   function updatePortal(returnFiber, current$$1, portal, expirationTime) {
     if (
       null === current$$1 ||
-      6 !== current$$1.tag ||
+      4 !== current$$1.tag ||
       current$$1.stateNode.containerInfo !== portal.containerInfo ||
       current$$1.stateNode.implementation !== portal.implementation
     )
@@ -2639,7 +2754,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     expirationTime,
     key
   ) {
-    if (null === current$$1 || 9 !== current$$1.tag)
+    if (null === current$$1 || 7 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromFragment(
           fragment,
@@ -2669,8 +2784,11 @@ function ChildReconciler(shouldTrackSideEffects) {
       switch (newChild.$$typeof) {
         case REACT_ELEMENT_TYPE:
           return (
-            (expirationTime = createFiberFromElement(
-              newChild,
+            (expirationTime = createFiberFromTypeAndProps(
+              newChild.type,
+              newChild.key,
+              newChild.props,
+              null,
               returnFiber.mode,
               expirationTime
             )),
@@ -2689,7 +2807,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             newChild
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (newChild = createFiberFromFragment(
             newChild,
@@ -2729,7 +2847,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ? updatePortal(returnFiber, oldFiber, newChild, expirationTime)
             : null;
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return null !== key
           ? null
           : updateFragment(
@@ -2797,7 +2915,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             )
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (existingChildren = existingChildren.get(newIdx) || null),
           updateFragment(
@@ -3014,9 +3132,9 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (isUnkeyedTopLevelFragment.key === isObject)
                 if (
-                  9 === isUnkeyedTopLevelFragment.tag
+                  7 === isUnkeyedTopLevelFragment.tag
                     ? newChild.type === REACT_FRAGMENT_TYPE
-                    : isUnkeyedTopLevelFragment.type === newChild.type
+                    : isUnkeyedTopLevelFragment.elementType === newChild.type
                 ) {
                   deleteRemainingChildren(
                     returnFiber,
@@ -3056,8 +3174,11 @@ function ChildReconciler(shouldTrackSideEffects) {
                 )),
                 (currentFirstChild.return = returnFiber),
                 (returnFiber = currentFirstChild))
-              : ((expirationTime = createFiberFromElement(
-                  newChild,
+              : ((expirationTime = createFiberFromTypeAndProps(
+                  newChild.type,
+                  newChild.key,
+                  newChild.props,
+                  null,
                   returnFiber.mode,
                   expirationTime
                 )),
@@ -3079,7 +3200,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (currentFirstChild.key === isUnkeyedTopLevelFragment)
                 if (
-                  6 === currentFirstChild.tag &&
+                  4 === currentFirstChild.tag &&
                   currentFirstChild.stateNode.containerInfo ===
                     newChild.containerInfo &&
                   currentFirstChild.stateNode.implementation ===
@@ -3117,7 +3238,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     if ("string" === typeof newChild || "number" === typeof newChild)
       return (
         (newChild = "" + newChild),
-        null !== currentFirstChild && 8 === currentFirstChild.tag
+        null !== currentFirstChild && 6 === currentFirstChild.tag
           ? (deleteRemainingChildren(returnFiber, currentFirstChild.sibling),
             (currentFirstChild = useFiber(
               currentFirstChild,
@@ -3136,7 +3257,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             (returnFiber = currentFirstChild)),
         placeSingleChild(returnFiber)
       );
-    if (isArray$1(newChild))
+    if (isArray(newChild))
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -3153,8 +3274,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     isObject && throwOnInvalidObjectType(returnFiber, newChild);
     if ("undefined" === typeof newChild && !isUnkeyedTopLevelFragment)
       switch (returnFiber.tag) {
-        case 2:
-        case 3:
+        case 1:
         case 0:
           (expirationTime = returnFiber.type),
             invariant(
@@ -3173,12 +3293,12 @@ var reconcileChildFibers = ChildReconciler(!0),
   isHydrating = !1;
 function tryHydrate(fiber, nextInstance) {
   switch (fiber.tag) {
-    case 7:
+    case 5:
       return (
         (nextInstance = shim$1(nextInstance, fiber.type, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
       );
-    case 8:
+    case 6:
       return (
         (nextInstance = shim$1(nextInstance, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
@@ -3201,7 +3321,8 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
           return;
         }
         var returnFiber = hydrationParentFiber,
-          fiber = new FiberNode(7, null, null, 0);
+          fiber = createFiber(5, null, null, 0);
+        fiber.elementType = "DELETED";
         fiber.type = "DELETED";
         fiber.stateNode = firstAttemptedInstance;
         fiber.return = returnFiber;
@@ -3219,38 +3340,6 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
         (hydrationParentFiber = fiber$jscomp$0);
   }
 }
-function readLazyComponentType(thenable) {
-  switch (thenable._reactStatus) {
-    case 1:
-      return thenable._reactResult;
-    case 2:
-      throw thenable._reactResult;
-    case 0:
-      throw thenable;
-    default:
-      throw ((thenable._reactStatus = 0),
-      thenable.then(
-        function(resolvedValue) {
-          if (0 === thenable._reactStatus) {
-            thenable._reactStatus = 1;
-            if ("object" === typeof resolvedValue && null !== resolvedValue) {
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                void 0 !== defaultExport && null !== defaultExport
-                  ? defaultExport
-                  : resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          0 === thenable._reactStatus &&
-            ((thenable._reactStatus = 2), (thenable._reactResult = error));
-        }
-      ),
-      thenable);
-  }
-}
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 function reconcileChildren(
   current$$1,
@@ -3276,26 +3365,108 @@ function reconcileChildren(
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  type = type.render;
+  Component = Component.render;
   var ref = workInProgress.ref;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  nextProps = Component(nextProps, ref);
+  workInProgress.effectTag |= 1;
+  reconcileChildren(
+    current$$1,
+    workInProgress,
+    nextProps,
+    renderExpirationTime
+  );
+  return workInProgress.child;
+}
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (null === current$$1) {
+    var type = Component.type;
+    if (
+      "function" === typeof type &&
+      !shouldConstruct(type) &&
+      void 0 === type.defaultProps &&
+      null === Component.compare &&
+      void 0 === Component.defaultProps
+    )
+      return (
+        (workInProgress.tag = 15),
+        (workInProgress.type = type),
+        updateSimpleMemoComponent(
+          current$$1,
+          workInProgress,
+          type,
+          nextProps,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    current$$1 = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    current$$1.ref = workInProgress.ref;
+    current$$1.return = workInProgress;
+    return (workInProgress.child = current$$1);
+  }
+  type = current$$1.child;
   if (
-    !didPerformWorkStackCursor.current &&
-    workInProgress.memoizedProps === nextProps &&
-    ref === (null !== current$$1 ? current$$1.ref : null)
+    updateExpirationTime < renderExpirationTime &&
+    ((updateExpirationTime = type.memoizedProps),
+    (Component = Component.compare),
+    (Component = null !== Component ? Component : shallowEqual),
+    Component(updateExpirationTime, nextProps) &&
+      current$$1.ref === workInProgress.ref)
   )
     return bailoutOnAlreadyFinishedWork(
       current$$1,
       workInProgress,
       renderExpirationTime
     );
-  type = type(nextProps, ref);
-  reconcileChildren(current$$1, workInProgress, type, renderExpirationTime);
-  workInProgress.memoizedProps = nextProps;
-  return workInProgress.child;
+  workInProgress.effectTag |= 1;
+  current$$1 = createWorkInProgress(type, nextProps, renderExpirationTime);
+  current$$1.ref = workInProgress.ref;
+  current$$1.return = workInProgress;
+  return (workInProgress.child = current$$1);
+}
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  return null !== current$$1 &&
+    updateExpirationTime < renderExpirationTime &&
+    shallowEqual(current$$1.memoizedProps, nextProps) &&
+    current$$1.ref === workInProgress.ref
+    ? bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      )
+    : updateFunctionComponent(
+        current$$1,
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      );
 }
 function markRef(current$$1, workInProgress) {
   var ref = workInProgress.ref;
@@ -3305,7 +3476,7 @@ function markRef(current$$1, workInProgress) {
   )
     workInProgress.effectTag |= 128;
 }
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
@@ -3325,7 +3496,6 @@ function updateFunctionalComponent(
     Component,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = nextProps;
   return workInProgress.child;
 }
 function updateClassComponent(
@@ -3340,154 +3510,152 @@ function updateClassComponent(
     pushContextProvider(workInProgress);
   } else hasContext = !1;
   prepareToReadContext(workInProgress, renderExpirationTime);
-  if (null === current$$1)
-    if (null === workInProgress.stateNode) {
-      var unmaskedContext = isContextProvider(Component)
-          ? previousContext
-          : contextStackCursor.current,
-        contextTypes = Component.contextTypes,
-        isContextConsumer = null !== contextTypes && void 0 !== contextTypes;
-      contextTypes = isContextConsumer
-        ? getMaskedContext(workInProgress, unmaskedContext)
-        : emptyContextObject;
-      var instance = new Component(nextProps, contextTypes);
-      workInProgress.memoizedState =
-        null !== instance.state && void 0 !== instance.state
-          ? instance.state
-          : null;
-      instance.updater = classComponentUpdater;
-      workInProgress.stateNode = instance;
-      instance._reactInternalFiber = workInProgress;
-      isContextConsumer &&
-        ((isContextConsumer = workInProgress.stateNode),
-        (isContextConsumer.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
-        (isContextConsumer.__reactInternalMemoizedMaskedChildContext = contextTypes));
+  if (null === workInProgress.stateNode)
+    null !== current$$1 &&
+      ((current$$1.alternate = null),
+      (workInProgress.alternate = null),
+      (workInProgress.effectTag |= 2)),
+      constructClassInstance(
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      ),
       mountClassInstance(
         workInProgress,
         Component,
         nextProps,
         renderExpirationTime
-      );
-      nextProps = !0;
-    } else {
-      unmaskedContext = workInProgress.stateNode;
-      contextTypes = workInProgress.memoizedProps;
-      unmaskedContext.props = contextTypes;
-      var oldContext = unmaskedContext.context;
-      isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current;
-      isContextConsumer = getMaskedContext(workInProgress, isContextConsumer);
-      var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-      (instance =
+      ),
+      (nextProps = !0);
+  else if (null === current$$1) {
+    var instance = workInProgress.stateNode,
+      oldProps = workInProgress.memoizedProps;
+    instance.props = oldProps;
+    var oldContext = instance.context,
+      contextType = Component.contextType;
+    "object" === typeof contextType && null !== contextType
+      ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+          contextType
+        ))
+      : ((contextType = isContextProvider(Component)
+          ? previousContext
+          : contextStackCursor.current),
+        (contextType = getMaskedContext(workInProgress, contextType)));
+    var getDerivedStateFromProps = Component.getDerivedStateFromProps,
+      hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
-          callComponentWillReceiveProps(
-            workInProgress,
-            unmaskedContext,
-            nextProps,
-            isContextConsumer
-          ));
-      hasForceUpdate = !1;
-      var oldState = workInProgress.memoizedState;
-      oldContext = unmaskedContext.state = oldState;
-      var updateQueue = workInProgress.updateQueue;
-      null !== updateQueue &&
-        (processUpdateQueue(
+        "function" === typeof instance.getSnapshotBeforeUpdate;
+    hasNewLifecycles ||
+      ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+        "function" !== typeof instance.componentWillReceiveProps) ||
+      ((oldProps !== nextProps || oldContext !== contextType) &&
+        callComponentWillReceiveProps(
           workInProgress,
-          updateQueue,
+          instance,
           nextProps,
-          unmaskedContext,
-          renderExpirationTime
-        ),
-        (oldContext = workInProgress.memoizedState));
-      contextTypes !== nextProps ||
-      oldState !== oldContext ||
-      didPerformWorkStackCursor.current ||
-      hasForceUpdate
-        ? ("function" === typeof getDerivedStateFromProps &&
-            (applyDerivedStateFromProps(
-              workInProgress,
-              Component,
-              getDerivedStateFromProps,
-              nextProps
-            ),
-            (oldContext = workInProgress.memoizedState)),
-          (contextTypes =
-            hasForceUpdate ||
-            checkShouldComponentUpdate(
-              workInProgress,
-              Component,
-              contextTypes,
-              nextProps,
-              oldState,
-              oldContext,
-              isContextConsumer
-            ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  "function" !== typeof unmaskedContext.componentWillMount) ||
-                ("function" === typeof unmaskedContext.componentWillMount &&
-                  unmaskedContext.componentWillMount(),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  unmaskedContext.UNSAFE_componentWillMount()),
-              "function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4))
-            : ("function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4),
-              (workInProgress.memoizedProps = nextProps),
-              (workInProgress.memoizedState = oldContext)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldContext),
-          (unmaskedContext.context = isContextConsumer),
-          (nextProps = contextTypes))
-        : ("function" === typeof unmaskedContext.componentDidMount &&
-            (workInProgress.effectTag |= 4),
-          (nextProps = !1));
-    }
-  else
-    (unmaskedContext = workInProgress.stateNode),
-      (contextTypes = workInProgress.memoizedProps),
-      (unmaskedContext.props = contextTypes),
-      (oldContext = unmaskedContext.context),
-      (isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current),
-      (isContextConsumer = getMaskedContext(workInProgress, isContextConsumer)),
+          contextType
+        ));
+    hasForceUpdate = !1;
+    var oldState = workInProgress.memoizedState;
+    oldContext = instance.state = oldState;
+    var updateQueue = workInProgress.updateQueue;
+    null !== updateQueue &&
+      (processUpdateQueue(
+        workInProgress,
+        updateQueue,
+        nextProps,
+        instance,
+        renderExpirationTime
+      ),
+      (oldContext = workInProgress.memoizedState));
+    oldProps !== nextProps ||
+    oldState !== oldContext ||
+    didPerformWorkStackCursor.current ||
+    hasForceUpdate
+      ? ("function" === typeof getDerivedStateFromProps &&
+          (applyDerivedStateFromProps(
+            workInProgress,
+            Component,
+            getDerivedStateFromProps,
+            nextProps
+          ),
+          (oldContext = workInProgress.memoizedState)),
+        (oldProps =
+          hasForceUpdate ||
+          checkShouldComponentUpdate(
+            workInProgress,
+            Component,
+            oldProps,
+            nextProps,
+            oldState,
+            oldContext,
+            contextType
+          ))
+          ? (hasNewLifecycles ||
+              ("function" !== typeof instance.UNSAFE_componentWillMount &&
+                "function" !== typeof instance.componentWillMount) ||
+              ("function" === typeof instance.componentWillMount &&
+                instance.componentWillMount(),
+              "function" === typeof instance.UNSAFE_componentWillMount &&
+                instance.UNSAFE_componentWillMount()),
+            "function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4))
+          : ("function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4),
+            (workInProgress.memoizedProps = nextProps),
+            (workInProgress.memoizedState = oldContext)),
+        (instance.props = nextProps),
+        (instance.state = oldContext),
+        (instance.context = contextType),
+        (nextProps = oldProps))
+      : ("function" === typeof instance.componentDidMount &&
+          (workInProgress.effectTag |= 4),
+        (nextProps = !1));
+  } else
+    (instance = workInProgress.stateNode),
+      (oldProps = workInProgress.memoizedProps),
+      (instance.props =
+        workInProgress.type === workInProgress.elementType
+          ? oldProps
+          : resolveDefaultProps(workInProgress.type, oldProps)),
+      (oldContext = instance.context),
+      (contextType = Component.contextType),
+      "object" === typeof contextType && null !== contextType
+        ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+            contextType
+          ))
+        : ((contextType = isContextProvider(Component)
+            ? previousContext
+            : contextStackCursor.current),
+          (contextType = getMaskedContext(workInProgress, contextType))),
       (getDerivedStateFromProps = Component.getDerivedStateFromProps),
-      (instance =
+      (hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
+        "function" === typeof instance.getSnapshotBeforeUpdate) ||
+        ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+          "function" !== typeof instance.componentWillReceiveProps) ||
+        ((oldProps !== nextProps || oldContext !== contextType) &&
           callComponentWillReceiveProps(
             workInProgress,
-            unmaskedContext,
+            instance,
             nextProps,
-            isContextConsumer
+            contextType
           )),
       (hasForceUpdate = !1),
       (oldContext = workInProgress.memoizedState),
-      (oldState = unmaskedContext.state = oldContext),
+      (oldState = instance.state = oldContext),
       (updateQueue = workInProgress.updateQueue),
       null !== updateQueue &&
         (processUpdateQueue(
           workInProgress,
           updateQueue,
           nextProps,
-          unmaskedContext,
+          instance,
           renderExpirationTime
         ),
         (oldState = workInProgress.memoizedState)),
-      contextTypes !== nextProps ||
+      oldProps !== nextProps ||
       oldContext !== oldState ||
       didPerformWorkStackCursor.current ||
       hasForceUpdate
@@ -3504,53 +3672,51 @@ function updateClassComponent(
             checkShouldComponentUpdate(
               workInProgress,
               Component,
-              contextTypes,
+              oldProps,
               nextProps,
               oldContext,
               oldState,
-              isContextConsumer
+              contextType
             ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  "function" !== typeof unmaskedContext.componentWillUpdate) ||
-                ("function" === typeof unmaskedContext.componentWillUpdate &&
-                  unmaskedContext.componentWillUpdate(
+            ? (hasNewLifecycles ||
+                ("function" !== typeof instance.UNSAFE_componentWillUpdate &&
+                  "function" !== typeof instance.componentWillUpdate) ||
+                ("function" === typeof instance.componentWillUpdate &&
+                  instance.componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   ),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  unmaskedContext.UNSAFE_componentWillUpdate(
+                "function" === typeof instance.UNSAFE_componentWillUpdate &&
+                  instance.UNSAFE_componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   )),
-              "function" === typeof unmaskedContext.componentDidUpdate &&
+              "function" === typeof instance.componentDidUpdate &&
                 (workInProgress.effectTag |= 4),
-              "function" === typeof unmaskedContext.getSnapshotBeforeUpdate &&
+              "function" === typeof instance.getSnapshotBeforeUpdate &&
                 (workInProgress.effectTag |= 256))
-            : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+            : ("function" !== typeof instance.componentDidUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 4),
-              "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+              "function" !== typeof instance.getSnapshotBeforeUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 256),
               (workInProgress.memoizedProps = nextProps),
               (workInProgress.memoizedState = oldState)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldState),
-          (unmaskedContext.context = isContextConsumer),
+          (instance.props = nextProps),
+          (instance.state = oldState),
+          (instance.context = contextType),
           (nextProps = getDerivedStateFromProps))
-        : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+        : ("function" !== typeof instance.componentDidUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 4),
-          "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+          "function" !== typeof instance.getSnapshotBeforeUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 256),
           (nextProps = !1));
@@ -3584,20 +3750,31 @@ function finishClassComponent(
     );
   shouldUpdate = workInProgress.stateNode;
   ReactCurrentOwner$3.current = workInProgress;
-  var nextChildren = didCaptureError ? null : shouldUpdate.render();
+  var nextChildren =
+    didCaptureError && "function" !== typeof Component.getDerivedStateFromError
+      ? null
+      : shouldUpdate.render();
   workInProgress.effectTag |= 1;
-  null !== current$$1 &&
-    didCaptureError &&
-    (reconcileChildren(current$$1, workInProgress, null, renderExpirationTime),
-    (workInProgress.child = null));
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
+  null !== current$$1 && didCaptureError
+    ? ((workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        current$$1.child,
+        null,
+        renderExpirationTime
+      )),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        null,
+        nextChildren,
+        renderExpirationTime
+      )))
+    : reconcileChildren(
+        current$$1,
+        workInProgress,
+        nextChildren,
+        renderExpirationTime
+      );
   workInProgress.memoizedState = shouldUpdate.state;
-  workInProgress.memoizedProps = shouldUpdate.props;
   hasContext && invalidateContextProvider(workInProgress, Component, !0);
   return workInProgress.child;
 }
@@ -3613,131 +3790,101 @@ function pushHostRootContext(workInProgress) {
       pushTopLevelContextObject(workInProgress, root.context, !1);
   pushHostContainer(workInProgress, root.containerInfo);
 }
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    baseProps = Object.assign({}, baseProps);
-    Component = Component.defaultProps;
-    for (var propName in Component)
-      void 0 === baseProps[propName] &&
-        (baseProps[propName] = Component[propName]);
-  }
-  return baseProps;
-}
-function mountIndeterminateComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
-  Component,
   renderExpirationTime
 ) {
-  invariant(
-    null === current$$1,
-    "An indeterminate component should never have mounted. This error is likely caused by a bug in React. Please file an issue."
-  );
-  var props = workInProgress.pendingProps;
-  if (
-    "object" === typeof Component &&
-    null !== Component &&
-    "function" === typeof Component.then
-  ) {
-    Component = readLazyComponentType(Component);
-    var JSCompiler_inline_result = Component;
-    JSCompiler_inline_result =
-      "function" === typeof JSCompiler_inline_result
-        ? shouldConstruct(JSCompiler_inline_result)
-          ? 3
-          : 1
-        : void 0 !== JSCompiler_inline_result &&
-          null !== JSCompiler_inline_result &&
-          JSCompiler_inline_result.$$typeof
-          ? 14
-          : 4;
-    JSCompiler_inline_result = workInProgress.tag = JSCompiler_inline_result;
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (JSCompiler_inline_result) {
-      case 1:
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 3:
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 14:
-        return updateForwardRef(
-          current$$1,
+  var mode = workInProgress.mode,
+    nextProps = workInProgress.pendingProps,
+    nextState = workInProgress.memoizedState;
+  if (0 === (workInProgress.effectTag & 64)) {
+    nextState = null;
+    var nextDidTimeout = !1;
+  } else
+    (nextState = { timedOutAt: null !== nextState ? nextState.timedOutAt : 0 }),
+      (nextDidTimeout = !0),
+      (workInProgress.effectTag &= -65);
+  null === current$$1
+    ? nextDidTimeout
+      ? ((nextDidTimeout = nextProps.fallback),
+        (nextProps = createFiberFromFragment(null, mode, 0, null)),
+        0 === (workInProgress.mode & 1) &&
+          (nextProps.child =
+            null !== workInProgress.memoizedState
+              ? workInProgress.child.child
+              : workInProgress.child),
+        (mode = createFiberFromFragment(
+          nextDidTimeout,
+          mode,
+          renderExpirationTime,
+          null
+        )),
+        (nextProps.sibling = mode),
+        (renderExpirationTime = nextProps),
+        (renderExpirationTime.return = mode.return = workInProgress))
+      : (renderExpirationTime = mode = mountChildFibers(
           workInProgress,
-          Component,
-          resolvedProps,
+          null,
+          nextProps.children,
           renderExpirationTime
-        );
-      default:
-        invariant(
-          !1,
-          "Element type is invalid. Received a promise that resolves to: %s. Promise elements must resolve to a class or function.",
-          Component
-        );
-    }
-  }
-  JSCompiler_inline_result = getMaskedContext(
-    workInProgress,
-    contextStackCursor.current
-  );
-  prepareToReadContext(workInProgress, renderExpirationTime);
-  JSCompiler_inline_result = Component(props, JSCompiler_inline_result);
-  workInProgress.effectTag |= 1;
-  if (
-    "object" === typeof JSCompiler_inline_result &&
-    null !== JSCompiler_inline_result &&
-    "function" === typeof JSCompiler_inline_result.render &&
-    void 0 === JSCompiler_inline_result.$$typeof
-  ) {
-    workInProgress.tag = 2;
-    isContextProvider(Component)
-      ? ((resolvedProps = !0), pushContextProvider(workInProgress))
-      : (resolvedProps = !1);
-    workInProgress.memoizedState =
-      null !== JSCompiler_inline_result.state &&
-      void 0 !== JSCompiler_inline_result.state
-        ? JSCompiler_inline_result.state
-        : null;
-    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-    "function" === typeof getDerivedStateFromProps &&
-      applyDerivedStateFromProps(
-        workInProgress,
-        Component,
-        getDerivedStateFromProps,
-        props
-      );
-    JSCompiler_inline_result.updater = classComponentUpdater;
-    workInProgress.stateNode = JSCompiler_inline_result;
-    JSCompiler_inline_result._reactInternalFiber = workInProgress;
-    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
-    return finishClassComponent(
-      current$$1,
-      workInProgress,
-      Component,
-      !0,
-      resolvedProps,
-      renderExpirationTime
-    );
-  }
-  workInProgress.tag = 0;
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    JSCompiler_inline_result,
-    renderExpirationTime
-  );
-  workInProgress.memoizedProps = props;
-  return workInProgress.child;
+        ))
+    : null !== current$$1.memoizedState
+      ? ((mode = current$$1.child),
+        (current$$1 = mode.sibling),
+        nextDidTimeout
+          ? ((renderExpirationTime = nextProps.fallback),
+            (nextProps = createWorkInProgress(mode, mode.pendingProps, 0)),
+            0 === (workInProgress.mode & 1) &&
+              ((nextDidTimeout =
+                null !== workInProgress.memoizedState
+                  ? workInProgress.child.child
+                  : workInProgress.child),
+              nextDidTimeout !== mode.child &&
+                (nextProps.child = nextDidTimeout)),
+            (mode = nextProps.sibling = createWorkInProgress(
+              current$$1,
+              renderExpirationTime,
+              current$$1.expirationTime
+            )),
+            (renderExpirationTime = nextProps),
+            (nextProps.childExpirationTime = 0),
+            (renderExpirationTime.return = mode.return = workInProgress))
+          : (renderExpirationTime = mode = reconcileChildFibers(
+              workInProgress,
+              mode.child,
+              nextProps.children,
+              renderExpirationTime
+            )))
+      : ((current$$1 = current$$1.child),
+        nextDidTimeout
+          ? ((nextDidTimeout = nextProps.fallback),
+            (nextProps = createFiberFromFragment(null, mode, 0, null)),
+            (nextProps.child = current$$1),
+            0 === (workInProgress.mode & 1) &&
+              (nextProps.child =
+                null !== workInProgress.memoizedState
+                  ? workInProgress.child.child
+                  : workInProgress.child),
+            (mode = nextProps.sibling = createFiberFromFragment(
+              nextDidTimeout,
+              mode,
+              renderExpirationTime,
+              null
+            )),
+            (mode.effectTag |= 2),
+            (renderExpirationTime = nextProps),
+            (nextProps.childExpirationTime = 0),
+            (renderExpirationTime.return = mode.return = workInProgress))
+          : (mode = renderExpirationTime = reconcileChildFibers(
+              workInProgress,
+              current$$1,
+              nextProps.children,
+              renderExpirationTime
+            )));
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = renderExpirationTime;
+  return mode;
 }
 function bailoutOnAlreadyFinishedWork(
   current$$1,
@@ -3746,9 +3893,7 @@ function bailoutOnAlreadyFinishedWork(
 ) {
   null !== current$$1 &&
     (workInProgress.firstContextDependency = current$$1.firstContextDependency);
-  var childExpirationTime = workInProgress.childExpirationTime;
-  if (0 === childExpirationTime || childExpirationTime > renderExpirationTime)
-    return null;
+  if (workInProgress.childExpirationTime < renderExpirationTime) return null;
   invariant(
     null === current$$1 || workInProgress.child === current$$1.child,
     "Resuming work not yet implemented."
@@ -3780,32 +3925,50 @@ function bailoutOnAlreadyFinishedWork(
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
   if (
+    null !== current$$1 &&
+    current$$1.memoizedProps === workInProgress.pendingProps &&
     !didPerformWorkStackCursor.current &&
-    (0 === updateExpirationTime || updateExpirationTime > renderExpirationTime)
+    updateExpirationTime < renderExpirationTime
   ) {
     switch (workInProgress.tag) {
-      case 5:
+      case 3:
         pushHostRootContext(workInProgress);
         break;
-      case 7:
+      case 5:
         pushHostContext(workInProgress);
         break;
-      case 2:
+      case 1:
         isContextProvider(workInProgress.type) &&
           pushContextProvider(workInProgress);
         break;
-      case 3:
-        isContextProvider(workInProgress.type._reactResult) &&
-          pushContextProvider(workInProgress);
-        break;
-      case 6:
+      case 4:
         pushHostContainer(
           workInProgress,
           workInProgress.stateNode.containerInfo
         );
         break;
-      case 12:
+      case 10:
         pushProvider(workInProgress, workInProgress.memoizedProps.value);
+        break;
+      case 13:
+        if (null !== workInProgress.memoizedState) {
+          updateExpirationTime = workInProgress.child.childExpirationTime;
+          if (
+            0 !== updateExpirationTime &&
+            updateExpirationTime >= renderExpirationTime
+          )
+            return updateSuspenseComponent(
+              current$$1,
+              workInProgress,
+              renderExpirationTime
+            );
+          workInProgress = bailoutOnAlreadyFinishedWork(
+            current$$1,
+            workInProgress,
+            renderExpirationTime
+          );
+          return null !== workInProgress ? workInProgress.sibling : null;
+        }
     }
     return bailoutOnAlreadyFinishedWork(
       current$$1,
@@ -3815,56 +3978,163 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
   }
   workInProgress.expirationTime = 0;
   switch (workInProgress.tag) {
-    case 4:
-      return mountIndeterminateComponent(
-        current$$1,
+    case 2:
+      updateExpirationTime = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      current$$1 = workInProgress.pendingProps;
+      var context = getMaskedContext(
         workInProgress,
-        workInProgress.type,
-        renderExpirationTime
+        contextStackCursor.current
       );
+      prepareToReadContext(workInProgress, renderExpirationTime);
+      context = updateExpirationTime(current$$1, context);
+      workInProgress.effectTag |= 1;
+      if (
+        "object" === typeof context &&
+        null !== context &&
+        "function" === typeof context.render &&
+        void 0 === context.$$typeof
+      ) {
+        workInProgress.tag = 1;
+        if (isContextProvider(updateExpirationTime)) {
+          var hasContext = !0;
+          pushContextProvider(workInProgress);
+        } else hasContext = !1;
+        workInProgress.memoizedState =
+          null !== context.state && void 0 !== context.state
+            ? context.state
+            : null;
+        var getDerivedStateFromProps =
+          updateExpirationTime.getDerivedStateFromProps;
+        "function" === typeof getDerivedStateFromProps &&
+          applyDerivedStateFromProps(
+            workInProgress,
+            updateExpirationTime,
+            getDerivedStateFromProps,
+            current$$1
+          );
+        context.updater = classComponentUpdater;
+        workInProgress.stateNode = context;
+        context._reactInternalFiber = workInProgress;
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          current$$1,
+          renderExpirationTime
+        );
+        workInProgress = finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          hasContext,
+          renderExpirationTime
+        );
+      } else
+        (workInProgress.tag = 0),
+          reconcileChildren(
+            null,
+            workInProgress,
+            context,
+            renderExpirationTime
+          ),
+          (workInProgress = workInProgress.child);
+      return workInProgress;
+    case 16:
+      context = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      hasContext = workInProgress.pendingProps;
+      current$$1 = readLazyComponentType(context);
+      workInProgress.type = current$$1;
+      context = workInProgress.tag = resolveLazyComponentTag(current$$1);
+      hasContext = resolveDefaultProps(current$$1, hasContext);
+      getDerivedStateFromProps = void 0;
+      switch (context) {
+        case 0:
+          getDerivedStateFromProps = updateFunctionComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 1:
+          getDerivedStateFromProps = updateClassComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 11:
+          getDerivedStateFromProps = updateForwardRef(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 14:
+          getDerivedStateFromProps = updateMemoComponent(
+            null,
+            workInProgress,
+            current$$1,
+            resolveDefaultProps(current$$1.type, hasContext),
+            updateExpirationTime,
+            renderExpirationTime
+          );
+          break;
+        default:
+          invariant(
+            !1,
+            "Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",
+            current$$1,
+            ""
+          );
+      }
+      return getDerivedStateFromProps;
     case 0:
-      return updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateFunctionComponent(
+          current$$1,
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        )
       );
     case 1:
-      var _Component5 = workInProgress.type._reactResult;
-      updateExpirationTime = workInProgress.pendingProps;
-      current$$1 = updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, updateExpirationTime),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = updateExpirationTime;
-      return current$$1;
-    case 2:
-      return updateClassComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 3:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateClassComponent(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateClassComponent(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 5:
+    case 3:
       return (
         pushHostRootContext(workInProgress),
         (updateExpirationTime = workInProgress.updateQueue),
@@ -3872,8 +4142,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           null !== updateExpirationTime,
           "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue."
         ),
-        (_Component5 = workInProgress.memoizedState),
-        (_Component5 = null !== _Component5 ? _Component5.element : null),
+        (context = workInProgress.memoizedState),
+        (context = null !== context ? context.element : null),
         processUpdateQueue(
           workInProgress,
           updateExpirationTime,
@@ -3882,7 +4152,7 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           renderExpirationTime
         ),
         (updateExpirationTime = workInProgress.memoizedState.element),
-        updateExpirationTime === _Component5
+        updateExpirationTime === context
           ? (workInProgress = bailoutOnAlreadyFinishedWork(
               current$$1,
               workInProgress,
@@ -3897,32 +4167,33 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             (workInProgress = workInProgress.child)),
         workInProgress
       );
-    case 7:
+    case 5:
       return (
         pushHostContext(workInProgress),
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (updateExpirationTime = workInProgress.pendingProps.children),
         markRef(current$$1, workInProgress),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         (workInProgress = workInProgress.child),
         workInProgress
       );
-    case 8:
+    case 6:
       return (
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (workInProgress.memoizedProps = workInProgress.pendingProps),
         null
       );
-    case 16:
-      return null;
-    case 6:
+    case 13:
+      return updateSuspenseComponent(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    case 4:
       return (
         pushHostContainer(
           workInProgress,
@@ -3942,92 +4213,78 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
               updateExpirationTime,
               renderExpirationTime
             ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 13:
-      return updateForwardRef(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 14:
+    case 11:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateForwardRef(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateForwardRef(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 9:
+    case 7:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 10:
+    case 8:
       return (
-        (updateExpirationTime = workInProgress.pendingProps.children),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 15:
+    case 12:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime.children,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 12:
+    case 10:
       a: {
         updateExpirationTime = workInProgress.type._context;
-        _Component5 = workInProgress.pendingProps;
-        var oldProps = workInProgress.memoizedProps,
-          newValue = _Component5.value;
-        workInProgress.memoizedProps = _Component5;
-        pushProvider(workInProgress, newValue);
-        if (null !== oldProps) {
-          var oldValue = oldProps.value;
-          newValue =
-            (oldValue === newValue &&
-              (0 !== oldValue || 1 / oldValue === 1 / newValue)) ||
-            (oldValue !== oldValue && newValue !== newValue)
+        context = workInProgress.pendingProps;
+        getDerivedStateFromProps = workInProgress.memoizedProps;
+        hasContext = context.value;
+        pushProvider(workInProgress, hasContext);
+        if (null !== getDerivedStateFromProps) {
+          var oldValue = getDerivedStateFromProps.value;
+          hasContext =
+            (oldValue === hasContext &&
+              (0 !== oldValue || 1 / oldValue === 1 / hasContext)) ||
+            (oldValue !== oldValue && hasContext !== hasContext)
               ? 0
               : ("function" ===
                 typeof updateExpirationTime._calculateChangedBits
                   ? updateExpirationTime._calculateChangedBits(
                       oldValue,
-                      newValue
+                      hasContext
                     )
                   : 1073741823) | 0;
-          if (0 === newValue) {
+          if (0 === hasContext) {
             if (
-              oldProps.children === _Component5.children &&
+              getDerivedStateFromProps.children === context.children &&
               !didPerformWorkStackCursor.current
             ) {
               workInProgress = bailoutOnAlreadyFinishedWork(
@@ -4039,113 +4296,175 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             }
           } else
             for (
-              oldProps = workInProgress.child,
-                null !== oldProps && (oldProps.return = workInProgress);
-              null !== oldProps;
+              getDerivedStateFromProps = workInProgress.child,
+                null !== getDerivedStateFromProps &&
+                  (getDerivedStateFromProps.return = workInProgress);
+              null !== getDerivedStateFromProps;
 
             ) {
-              oldValue = oldProps.firstContextDependency;
+              oldValue = getDerivedStateFromProps.firstContextDependency;
               if (null !== oldValue) {
                 do {
                   if (
                     oldValue.context === updateExpirationTime &&
-                    0 !== (oldValue.observedBits & newValue)
+                    0 !== (oldValue.observedBits & hasContext)
                   ) {
-                    if (2 === oldProps.tag || 3 === oldProps.tag) {
+                    if (1 === getDerivedStateFromProps.tag) {
                       var nextFiber = createUpdate(renderExpirationTime);
                       nextFiber.tag = 2;
-                      enqueueUpdate(oldProps, nextFiber);
+                      enqueueUpdate(getDerivedStateFromProps, nextFiber);
                     }
-                    if (
-                      0 === oldProps.expirationTime ||
-                      oldProps.expirationTime > renderExpirationTime
-                    )
-                      oldProps.expirationTime = renderExpirationTime;
-                    nextFiber = oldProps.alternate;
+                    getDerivedStateFromProps.expirationTime <
+                      renderExpirationTime &&
+                      (getDerivedStateFromProps.expirationTime = renderExpirationTime);
+                    nextFiber = getDerivedStateFromProps.alternate;
                     null !== nextFiber &&
-                      (0 === nextFiber.expirationTime ||
-                        nextFiber.expirationTime > renderExpirationTime) &&
+                      nextFiber.expirationTime < renderExpirationTime &&
                       (nextFiber.expirationTime = renderExpirationTime);
-                    for (var node = oldProps.return; null !== node; ) {
+                    for (
+                      var node = getDerivedStateFromProps.return;
+                      null !== node;
+
+                    ) {
                       nextFiber = node.alternate;
-                      if (
-                        0 === node.childExpirationTime ||
-                        node.childExpirationTime > renderExpirationTime
-                      )
+                      if (node.childExpirationTime < renderExpirationTime)
                         (node.childExpirationTime = renderExpirationTime),
                           null !== nextFiber &&
-                            (0 === nextFiber.childExpirationTime ||
-                              nextFiber.childExpirationTime >
-                                renderExpirationTime) &&
+                            nextFiber.childExpirationTime <
+                              renderExpirationTime &&
                             (nextFiber.childExpirationTime = renderExpirationTime);
                       else if (
                         null !== nextFiber &&
-                        (0 === nextFiber.childExpirationTime ||
-                          nextFiber.childExpirationTime > renderExpirationTime)
+                        nextFiber.childExpirationTime < renderExpirationTime
                       )
                         nextFiber.childExpirationTime = renderExpirationTime;
                       else break;
                       node = node.return;
                     }
                   }
-                  nextFiber = oldProps.child;
+                  nextFiber = getDerivedStateFromProps.child;
                   oldValue = oldValue.next;
                 } while (null !== oldValue);
               } else
                 nextFiber =
-                  12 === oldProps.tag
-                    ? oldProps.type === workInProgress.type
+                  10 === getDerivedStateFromProps.tag
+                    ? getDerivedStateFromProps.type === workInProgress.type
                       ? null
-                      : oldProps.child
-                    : oldProps.child;
-              if (null !== nextFiber) nextFiber.return = oldProps;
+                      : getDerivedStateFromProps.child
+                    : getDerivedStateFromProps.child;
+              if (null !== nextFiber)
+                nextFiber.return = getDerivedStateFromProps;
               else
-                for (nextFiber = oldProps; null !== nextFiber; ) {
+                for (
+                  nextFiber = getDerivedStateFromProps;
+                  null !== nextFiber;
+
+                ) {
                   if (nextFiber === workInProgress) {
                     nextFiber = null;
                     break;
                   }
-                  oldProps = nextFiber.sibling;
-                  if (null !== oldProps) {
-                    oldProps.return = nextFiber.return;
-                    nextFiber = oldProps;
+                  getDerivedStateFromProps = nextFiber.sibling;
+                  if (null !== getDerivedStateFromProps) {
+                    getDerivedStateFromProps.return = nextFiber.return;
+                    nextFiber = getDerivedStateFromProps;
                     break;
                   }
                   nextFiber = nextFiber.return;
                 }
-              oldProps = nextFiber;
+              getDerivedStateFromProps = nextFiber;
             }
         }
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5.children,
+          context.children,
           renderExpirationTime
         );
         workInProgress = workInProgress.child;
       }
       return workInProgress;
-    case 11:
+    case 9:
       return (
-        (newValue = workInProgress.type),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (context = workInProgress.type),
+        (hasContext = workInProgress.pendingProps),
+        (updateExpirationTime = hasContext.children),
         prepareToReadContext(workInProgress, renderExpirationTime),
-        (newValue = readContext(
-          newValue,
-          updateExpirationTime.unstable_observedBits
-        )),
-        (_Component5 = _Component5(newValue)),
+        (context = readContext(context, hasContext.unstable_observedBits)),
+        (updateExpirationTime = updateExpirationTime(context)),
         (workInProgress.effectTag |= 1),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
+    case 14:
+      return (
+        (context = workInProgress.type),
+        (hasContext = resolveDefaultProps(
+          context,
+          workInProgress.pendingProps
+        )),
+        (hasContext = resolveDefaultProps(context.type, hasContext)),
+        updateMemoComponent(
+          current$$1,
+          workInProgress,
+          context,
+          hasContext,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    case 15:
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    case 17:
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        null !== current$$1 &&
+          ((current$$1.alternate = null),
+          (workInProgress.alternate = null),
+          (workInProgress.effectTag |= 2)),
+        (workInProgress.tag = 1),
+        isContextProvider(updateExpirationTime)
+          ? ((current$$1 = !0), pushContextProvider(workInProgress))
+          : (current$$1 = !1),
+        prepareToReadContext(workInProgress, renderExpirationTime),
+        constructClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          current$$1,
+          renderExpirationTime
+        )
+      );
     default:
       invariant(
         !1,
@@ -4153,9 +4472,27 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
   }
 }
-var updateHostContainer = void 0,
+var appendAllChildren = void 0,
+  updateHostContainer = void 0,
   updateHostComponent$1 = void 0,
   updateHostText$1 = void 0;
+appendAllChildren = function(parent, workInProgress) {
+  for (var node = workInProgress.child; null !== node; ) {
+    if (5 === node.tag || 6 === node.tag) parent._children.push(node.stateNode);
+    else if (4 !== node.tag && null !== node.child) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+    if (node === workInProgress) break;
+    for (; null === node.sibling; ) {
+      if (null === node.return || node.return === workInProgress) return;
+      node = node.return;
+    }
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+};
 updateHostContainer = function() {};
 updateHostComponent$1 = function(current, workInProgress, type, newProps) {
   current.memoizedProps !== newProps &&
@@ -4201,7 +4538,7 @@ function logError(boundary, errorInfo) {
     willRetry: !1
   };
   null !== boundary &&
-    2 === boundary.tag &&
+    1 === boundary.tag &&
     ((errorInfo.errorBoundary = boundary.stateNode),
     (errorInfo.errorBoundaryName = getComponentName(boundary.type)),
     (errorInfo.errorBoundaryFound = !0),
@@ -4225,32 +4562,55 @@ function safelyDetachRef(current$$1) {
       }
     else ref.current = null;
 }
-function commitUnmount(current$$1) {
+function commitUnmount(current$$1$jscomp$0) {
   "function" === typeof onCommitFiberUnmount &&
-    onCommitFiberUnmount(current$$1);
-  switch (current$$1.tag) {
-    case 2:
-    case 3:
-      safelyDetachRef(current$$1);
-      var instance = current$$1.stateNode;
-      if ("function" === typeof instance.componentWillUnmount)
+    onCommitFiberUnmount(current$$1$jscomp$0);
+  switch (current$$1$jscomp$0.tag) {
+    case 0:
+    case 11:
+    case 14:
+    case 15:
+      var updateQueue = current$$1$jscomp$0.updateQueue;
+      if (
+        null !== updateQueue &&
+        ((updateQueue = updateQueue.lastEffect), null !== updateQueue)
+      ) {
+        var effect = (updateQueue = updateQueue.next);
+        do {
+          var destroy = effect.destroy;
+          if (null !== destroy) {
+            var current$$1 = current$$1$jscomp$0;
+            try {
+              destroy();
+            } catch (error) {
+              captureCommitPhaseError(current$$1, error);
+            }
+          }
+          effect = effect.next;
+        } while (effect !== updateQueue);
+      }
+      break;
+    case 1:
+      safelyDetachRef(current$$1$jscomp$0);
+      updateQueue = current$$1$jscomp$0.stateNode;
+      if ("function" === typeof updateQueue.componentWillUnmount)
         try {
-          (instance.props = current$$1.memoizedProps),
-            (instance.state = current$$1.memoizedState),
-            instance.componentWillUnmount();
+          (updateQueue.props = current$$1$jscomp$0.memoizedProps),
+            (updateQueue.state = current$$1$jscomp$0.memoizedState),
+            updateQueue.componentWillUnmount();
         } catch (unmountError) {
-          captureCommitPhaseError(current$$1, unmountError);
+          captureCommitPhaseError(current$$1$jscomp$0, unmountError);
         }
       break;
-    case 7:
-      safelyDetachRef(current$$1);
+    case 5:
+      safelyDetachRef(current$$1$jscomp$0);
       break;
-    case 6:
-      unmountHostComponents(current$$1);
+    case 4:
+      unmountHostComponents(current$$1$jscomp$0);
   }
 }
 function isHostParent(fiber) {
-  return 7 === fiber.tag || 5 === fiber.tag || 6 === fiber.tag;
+  return 5 === fiber.tag || 3 === fiber.tag || 4 === fiber.tag;
 }
 function commitPlacement(finishedWork) {
   a: {
@@ -4269,15 +4629,15 @@ function commitPlacement(finishedWork) {
   }
   var isContainer = (parent = void 0);
   switch (parentFiber.tag) {
-    case 7:
+    case 5:
       parent = parentFiber.stateNode;
       isContainer = !1;
       break;
-    case 5:
+    case 3:
       parent = parentFiber.stateNode.containerInfo;
       isContainer = !0;
       break;
-    case 6:
+    case 4:
       parent = parentFiber.stateNode.containerInfo;
       isContainer = !0;
       break;
@@ -4299,11 +4659,11 @@ function commitPlacement(finishedWork) {
     parentFiber.sibling.return = parentFiber.return;
     for (
       parentFiber = parentFiber.sibling;
-      7 !== parentFiber.tag && 8 !== parentFiber.tag;
+      5 !== parentFiber.tag && 6 !== parentFiber.tag;
 
     ) {
       if (parentFiber.effectTag & 2) continue b;
-      if (null === parentFiber.child || 6 === parentFiber.tag) continue b;
+      if (null === parentFiber.child || 4 === parentFiber.tag) continue b;
       else
         (parentFiber.child.return = parentFiber),
           (parentFiber = parentFiber.child);
@@ -4314,7 +4674,7 @@ function commitPlacement(finishedWork) {
     }
   }
   for (var node = finishedWork; ; ) {
-    if (7 === node.tag || 8 === node.tag)
+    if (5 === node.tag || 6 === node.tag)
       if (parentFiber)
         if (isContainer)
           invariant(
@@ -4383,7 +4743,7 @@ function commitPlacement(finishedWork) {
                   [index.length - 1],
                   []
                 )));
-    else if (6 !== node.tag && null !== node.child) {
+    else if (4 !== node.tag && null !== node.child) {
       node.child.return = node;
       node = node.child;
       continue;
@@ -4414,15 +4774,15 @@ function unmountHostComponents(current$$1) {
           "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue."
         );
         switch (currentParentIsValid.tag) {
-          case 7:
+          case 5:
             currentParent = currentParentIsValid.stateNode;
             currentParentIsContainer = !1;
             break a;
-          case 5:
+          case 3:
             currentParent = currentParentIsValid.stateNode.containerInfo;
             currentParentIsContainer = !0;
             break a;
-          case 6:
+          case 4:
             currentParent = currentParentIsValid.stateNode.containerInfo;
             currentParentIsContainer = !0;
             break a;
@@ -4431,11 +4791,11 @@ function unmountHostComponents(current$$1) {
       }
       currentParentIsValid = !0;
     }
-    if (7 === node.tag || 8 === node.tag) {
+    if (5 === node.tag || 6 === node.tag) {
       a: for (var root = node, node$jscomp$0 = root; ; )
         if (
           (commitUnmount(node$jscomp$0),
-          null !== node$jscomp$0.child && 6 !== node$jscomp$0.tag)
+          null !== node$jscomp$0.child && 4 !== node$jscomp$0.tag)
         )
           (node$jscomp$0.child.return = node$jscomp$0),
             (node$jscomp$0 = node$jscomp$0.child);
@@ -4463,7 +4823,7 @@ function unmountHostComponents(current$$1) {
         UIManager.manageChildren(root._nativeTag, [], [], [], [], [child]);
       }
     } else if (
-      (6 === node.tag
+      (4 === node.tag
         ? ((currentParent = node.stateNode.containerInfo),
           (currentParentIsContainer = !0))
         : commitUnmount(node),
@@ -4477,7 +4837,7 @@ function unmountHostComponents(current$$1) {
     for (; null === node.sibling; ) {
       if (null === node.return || node.return === current$$1) return;
       node = node.return;
-      6 === node.tag && (currentParentIsValid = !1);
+      4 === node.tag && (currentParentIsValid = !1);
     }
     node.sibling.return = node.return;
     node = node.sibling;
@@ -4485,10 +4845,14 @@ function unmountHostComponents(current$$1) {
 }
 function commitWork(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case 2:
-    case 3:
+    case 0:
+    case 11:
+    case 14:
+    case 15:
       break;
-    case 7:
+    case 1:
+      break;
+    case 5:
       var instance = finishedWork.stateNode;
       if (null != instance) {
         var newProps = finishedWork.memoizedProps;
@@ -4512,7 +4876,7 @@ function commitWork(current$$1, finishedWork) {
             ));
       }
       break;
-    case 8:
+    case 6:
       invariant(
         null !== finishedWork.stateNode,
         "This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue."
@@ -4521,11 +4885,78 @@ function commitWork(current$$1, finishedWork) {
         text: finishedWork.memoizedProps
       });
       break;
-    case 5:
+    case 3:
       break;
-    case 15:
+    case 12:
       break;
-    case 16:
+    case 13:
+      newProps = finishedWork.memoizedState;
+      current$$1 = finishedWork;
+      null === newProps
+        ? (instance = !1)
+        : ((instance = !0),
+          (current$$1 = finishedWork.child),
+          0 === newProps.timedOutAt &&
+            (newProps.timedOutAt = requestCurrentTime()));
+      if (null !== current$$1)
+        a: for (newProps = finishedWork = current$$1; ; ) {
+          if (5 === newProps.tag)
+            if (((current$$1 = newProps.stateNode), instance)) {
+              updatePayload = current$$1.viewConfig;
+              var updatePayload$jscomp$0 = diffProperties(
+                null,
+                emptyObject,
+                { style: { display: "none" } },
+                updatePayload.validAttributes
+              );
+              UIManager.updateView(
+                current$$1._nativeTag,
+                updatePayload.uiViewClassName,
+                updatePayload$jscomp$0
+              );
+            } else {
+              current$$1 = newProps.stateNode;
+              updatePayload$jscomp$0 = newProps.memoizedProps;
+              updatePayload = current$$1.viewConfig;
+              var prevProps = Object.assign({}, updatePayload$jscomp$0, {
+                style: [updatePayload$jscomp$0.style, { display: "none" }]
+              });
+              updatePayload$jscomp$0 = diffProperties(
+                null,
+                prevProps,
+                updatePayload$jscomp$0,
+                updatePayload.validAttributes
+              );
+              UIManager.updateView(
+                current$$1._nativeTag,
+                updatePayload.uiViewClassName,
+                updatePayload$jscomp$0
+              );
+            }
+          else {
+            if (6 === newProps.tag) throw Error("Not yet implemented.");
+            if (13 === newProps.tag && null !== newProps.memoizedState) {
+              current$$1 = newProps.child.sibling;
+              current$$1.return = newProps;
+              newProps = current$$1;
+              continue;
+            } else if (null !== newProps.child) {
+              newProps.child.return = newProps;
+              newProps = newProps.child;
+              continue;
+            }
+          }
+          if (newProps === finishedWork) break a;
+          for (; null === newProps.sibling; ) {
+            if (null === newProps.return || newProps.return === finishedWork)
+              break a;
+            newProps = newProps.return;
+          }
+          newProps.sibling.return = newProps.return;
+          newProps = newProps.sibling;
+        }
+      break;
+    case 17:
       break;
     default:
       invariant(
@@ -4548,13 +4979,21 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   expirationTime = createUpdate(expirationTime);
   expirationTime.tag = 3;
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if ("function" === typeof getDerivedStateFromError) {
+    var error$jscomp$0 = errorInfo.value;
+    expirationTime.payload = function() {
+      return getDerivedStateFromError(error$jscomp$0);
+    };
+  }
   var inst = fiber.stateNode;
   null !== inst &&
     "function" === typeof inst.componentDidCatch &&
     (expirationTime.callback = function() {
-      null === legacyErrorBoundariesThatAlreadyFailed
-        ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
-        : legacyErrorBoundariesThatAlreadyFailed.add(this);
+      "function" !== typeof getDerivedStateFromError &&
+        (null === legacyErrorBoundariesThatAlreadyFailed
+          ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
+          : legacyErrorBoundariesThatAlreadyFailed.add(this));
       var error = errorInfo.value,
         stack = errorInfo.stack;
       logError(fiber, errorInfo);
@@ -4566,24 +5005,14 @@ function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
 }
 function unwindWork(workInProgress) {
   switch (workInProgress.tag) {
-    case 2:
+    case 1:
       isContextProvider(workInProgress.type) && popContext(workInProgress);
       var effectTag = workInProgress.effectTag;
-      return effectTag & 1024
-        ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+      return effectTag & 2048
+        ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
           workInProgress)
         : null;
     case 3:
-      return (
-        isContextProvider(workInProgress.type._reactResult) &&
-          popContext(workInProgress),
-        (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
-            workInProgress)
-          : null
-      );
-    case 5:
       return (
         popHostContainer(workInProgress),
         popTopLevelContextObject(workInProgress),
@@ -4592,36 +5021,39 @@ function unwindWork(workInProgress) {
           0 === (effectTag & 64),
           "The root failed to unmount after an error. This is likely a bug in React. Please file an issue."
         ),
-        (workInProgress.effectTag = (effectTag & -1025) | 64),
+        (workInProgress.effectTag = (effectTag & -2049) | 64),
         workInProgress
       );
-    case 7:
+    case 5:
       return popHostContext(workInProgress), null;
-    case 16:
+    case 13:
       return (
         (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+        effectTag & 2048
+          ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
             workInProgress)
           : null
       );
-    case 6:
+    case 4:
       return popHostContainer(workInProgress), null;
-    case 12:
+    case 10:
       return popProvider(workInProgress), null;
     default:
       return null;
   }
 }
-var Dispatcher = { readContext: readContext },
+var DispatcherWithoutHooks = { readContext: readContext },
   ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner,
   isWorking = !1,
   nextUnitOfWork = null,
   nextRoot = null,
   nextRenderExpirationTime = 0,
+  nextLatestAbsoluteTimeoutMs = -1,
   nextRenderDidError = !1,
   nextEffect = null,
   isCommitting$1 = !1,
+  passiveEffectCallbackHandle = null,
+  passiveEffectCallback = null,
   legacyErrorBoundariesThatAlreadyFailed = null;
 function resetStack() {
   if (null !== nextUnitOfWork)
@@ -4632,7 +5064,7 @@ function resetStack() {
     ) {
       var interruptedWork$jscomp$0 = interruptedWork;
       switch (interruptedWork$jscomp$0.tag) {
-        case 2:
+        case 1:
           var childContextTypes =
             interruptedWork$jscomp$0.type.childContextTypes;
           null !== childContextTypes &&
@@ -4640,231 +5072,226 @@ function resetStack() {
             popContext(interruptedWork$jscomp$0);
           break;
         case 3:
-          childContextTypes =
-            interruptedWork$jscomp$0.type._reactResult.childContextTypes;
-          null !== childContextTypes &&
-            void 0 !== childContextTypes &&
-            popContext(interruptedWork$jscomp$0);
-          break;
-        case 5:
           popHostContainer(interruptedWork$jscomp$0);
           popTopLevelContextObject(interruptedWork$jscomp$0);
           break;
-        case 7:
+        case 5:
           popHostContext(interruptedWork$jscomp$0);
           break;
-        case 6:
+        case 4:
           popHostContainer(interruptedWork$jscomp$0);
           break;
-        case 12:
+        case 10:
           popProvider(interruptedWork$jscomp$0);
       }
       interruptedWork = interruptedWork.return;
     }
   nextRoot = null;
   nextRenderExpirationTime = 0;
+  nextLatestAbsoluteTimeoutMs = -1;
   nextRenderDidError = !1;
   nextUnitOfWork = null;
 }
+function flushPassiveEffects() {
+  null !== passiveEffectCallback &&
+    (scheduler.unstable_cancelCallback(passiveEffectCallbackHandle),
+    passiveEffectCallback());
+}
 function completeUnitOfWork(workInProgress) {
   for (;;) {
     var current$$1 = workInProgress.alternate,
       returnFiber = workInProgress.return,
       siblingFiber = workInProgress.sibling;
-    if (0 === (workInProgress.effectTag & 512)) {
-      var current = current$$1;
-      current$$1 = workInProgress;
-      var newProps = current$$1.pendingProps;
-      switch (current$$1.tag) {
-        case 0:
-        case 1:
-          break;
-        case 2:
-          isContextProvider(current$$1.type) && popContext(current$$1);
-          break;
-        case 3:
-          isContextProvider(current$$1.type._reactResult) &&
-            popContext(current$$1);
-          break;
-        case 5:
-          popHostContainer(current$$1);
-          popTopLevelContextObject(current$$1);
-          newProps = current$$1.stateNode;
-          newProps.pendingContext &&
-            ((newProps.context = newProps.pendingContext),
-            (newProps.pendingContext = null));
-          if (null === current || null === current.child)
-            current$$1.effectTag &= -3;
-          updateHostContainer(current$$1);
-          break;
-        case 7:
-          popHostContext(current$$1);
-          var rootContainerInstance = requiredContext(
+    if (0 === (workInProgress.effectTag & 1024)) {
+      nextUnitOfWork = workInProgress;
+      a: {
+        var current = current$$1;
+        current$$1 = workInProgress;
+        var renderExpirationTime = nextRenderExpirationTime,
+          newProps = current$$1.pendingProps;
+        switch (current$$1.tag) {
+          case 2:
+            break;
+          case 16:
+            break;
+          case 15:
+          case 0:
+            break;
+          case 1:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          case 3:
+            popHostContainer(current$$1);
+            popTopLevelContextObject(current$$1);
+            newProps = current$$1.stateNode;
+            newProps.pendingContext &&
+              ((newProps.context = newProps.pendingContext),
+              (newProps.pendingContext = null));
+            if (null === current || null === current.child)
+              current$$1.effectTag &= -3;
+            updateHostContainer(current$$1);
+            break;
+          case 5:
+            popHostContext(current$$1);
+            renderExpirationTime = requiredContext(
               rootInstanceStackCursor.current
-            ),
-            type = current$$1.type;
-          if (null !== current && null != current$$1.stateNode)
-            updateHostComponent$1(
-              current,
-              current$$1,
-              type,
-              newProps,
-              rootContainerInstance
-            ),
-              current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
-          else if (newProps) {
-            current = requiredContext(contextStackCursor$1.current);
-            var internalInstanceHandle = current$$1,
-              tag = allocateTag(),
-              viewConfig = ReactNativeViewConfigRegistry.get(type);
-            invariant(
-              "RCTView" !== type || !current.isInAParentText,
-              "Nesting of <View> within <Text> is not currently supported."
-            );
-            var updatePayload = diffProperties(
-              null,
-              emptyObject,
-              newProps,
-              viewConfig.validAttributes
-            );
-            UIManager.createView(
-              tag,
-              viewConfig.uiViewClassName,
-              rootContainerInstance,
-              updatePayload
-            );
-            viewConfig = new ReactNativeFiberHostComponent(tag, viewConfig);
-            instanceCache[tag] = internalInstanceHandle;
-            instanceProps[tag] = newProps;
-            a: for (
-              internalInstanceHandle = viewConfig,
-                tag = current$$1,
-                updatePayload = tag.child;
-              null !== updatePayload;
-
-            ) {
-              if (7 === updatePayload.tag || 8 === updatePayload.tag)
-                internalInstanceHandle._children.push(updatePayload.stateNode);
-              else if (
-                6 !== updatePayload.tag &&
-                null !== updatePayload.child
-              ) {
-                updatePayload.child.return = updatePayload;
-                updatePayload = updatePayload.child;
-                continue;
-              }
-              if (updatePayload === tag) break;
-              for (; null === updatePayload.sibling; ) {
-                if (
-                  null === updatePayload.return ||
-                  updatePayload.return === tag
-                )
-                  break a;
-                updatePayload = updatePayload.return;
-              }
-              updatePayload.sibling.return = updatePayload.return;
-              updatePayload = updatePayload.sibling;
-            }
-            finalizeInitialChildren(
-              viewConfig,
-              type,
-              newProps,
-              rootContainerInstance,
-              current
-            ) && (current$$1.effectTag |= 4);
-            current$$1.stateNode = viewConfig;
-            null !== current$$1.ref && (current$$1.effectTag |= 128);
-          } else
-            invariant(
-              null !== current$$1.stateNode,
-              "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
             );
-          break;
-        case 8:
-          current && null != current$$1.stateNode
-            ? updateHostText$1(
+            var type = current$$1.type;
+            if (null !== current && null != current$$1.stateNode)
+              updateHostComponent$1(
                 current,
                 current$$1,
-                current.memoizedProps,
-                newProps
-              )
-            : ("string" !== typeof newProps &&
+                type,
+                newProps,
+                renderExpirationTime
+              ),
+                current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
+            else if (newProps) {
+              current = requiredContext(contextStackCursor$1.current);
+              var internalInstanceHandle = current$$1,
+                tag = allocateTag(),
+                viewConfig = ReactNativeViewConfigRegistry.get(type);
+              invariant(
+                "RCTView" !== type || !current.isInAParentText,
+                "Nesting of <View> within <Text> is not currently supported."
+              );
+              var updatePayload = diffProperties(
+                null,
+                emptyObject,
+                newProps,
+                viewConfig.validAttributes
+              );
+              UIManager.createView(
+                tag,
+                viewConfig.uiViewClassName,
+                renderExpirationTime,
+                updatePayload
+              );
+              viewConfig = new ReactNativeFiberHostComponent(tag, viewConfig);
+              instanceCache[tag] = internalInstanceHandle;
+              instanceProps[tag] = newProps;
+              appendAllChildren(viewConfig, current$$1, !1, !1);
+              finalizeInitialChildren(
+                viewConfig,
+                type,
+                newProps,
+                renderExpirationTime,
+                current
+              ) && (current$$1.effectTag |= 4);
+              current$$1.stateNode = viewConfig;
+              null !== current$$1.ref && (current$$1.effectTag |= 128);
+            } else
+              invariant(
+                null !== current$$1.stateNode,
+                "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+              );
+            break;
+          case 6:
+            current && null != current$$1.stateNode
+              ? updateHostText$1(
+                  current,
+                  current$$1,
+                  current.memoizedProps,
+                  newProps
+                )
+              : ("string" !== typeof newProps &&
+                  invariant(
+                    null !== current$$1.stateNode,
+                    "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  ),
+                (current = requiredContext(rootInstanceStackCursor.current)),
+                (type = requiredContext(contextStackCursor$1.current)),
+                (renderExpirationTime = current$$1),
                 invariant(
-                  null !== current$$1.stateNode,
-                  "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  type.isInAParentText,
+                  "Text strings must be rendered within a <Text> component."
                 ),
-              (current = requiredContext(rootInstanceStackCursor.current)),
-              (type = requiredContext(contextStackCursor$1.current)),
-              (rootContainerInstance = current$$1),
-              invariant(
-                type.isInAParentText,
-                "Text strings must be rendered within a <Text> component."
-              ),
-              (type = allocateTag()),
-              UIManager.createView(type, "RCTRawText", current, {
-                text: newProps
-              }),
-              (instanceCache[type] = current$$1),
-              (rootContainerInstance.stateNode = type));
-          break;
-        case 13:
-        case 14:
-          break;
-        case 16:
-          break;
-        case 9:
-          break;
-        case 10:
-          break;
-        case 15:
-          break;
-        case 6:
-          popHostContainer(current$$1);
-          updateHostContainer(current$$1);
-          break;
-        case 12:
-          popProvider(current$$1);
-          break;
-        case 11:
-          break;
-        case 4:
-          invariant(
-            !1,
-            "An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue."
-          );
-        default:
-          invariant(
-            !1,
-            "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
-          );
+                (type = allocateTag()),
+                UIManager.createView(type, "RCTRawText", current, {
+                  text: newProps
+                }),
+                (instanceCache[type] = current$$1),
+                (renderExpirationTime.stateNode = type));
+            break;
+          case 11:
+            break;
+          case 13:
+            newProps = current$$1.memoizedState;
+            if (0 !== (current$$1.effectTag & 64)) {
+              current$$1.expirationTime = renderExpirationTime;
+              nextUnitOfWork = current$$1;
+              break a;
+            }
+            newProps = null !== newProps;
+            renderExpirationTime =
+              null !== current && null !== current.memoizedState;
+            null !== current &&
+              !newProps &&
+              renderExpirationTime &&
+              ((type = current.child.sibling),
+              null !== type &&
+                ((current = current$$1.firstEffect),
+                null !== current
+                  ? ((current$$1.firstEffect = type),
+                    (type.nextEffect = current))
+                  : ((current$$1.firstEffect = current$$1.lastEffect = type),
+                    (type.nextEffect = null)),
+                (type.effectTag = 8)));
+            if (
+              newProps !== renderExpirationTime ||
+              (0 === (current$$1.effectTag & 1) && newProps)
+            )
+              current$$1.effectTag |= 4;
+            break;
+          case 7:
+            break;
+          case 8:
+            break;
+          case 12:
+            break;
+          case 4:
+            popHostContainer(current$$1);
+            updateHostContainer(current$$1);
+            break;
+          case 10:
+            popProvider(current$$1);
+            break;
+          case 9:
+            break;
+          case 14:
+            break;
+          case 17:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          default:
+            invariant(
+              !1,
+              "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
+            );
+        }
+        nextUnitOfWork = null;
       }
-      current$$1 = nextUnitOfWork = null;
-      newProps = workInProgress;
+      current$$1 = workInProgress;
       if (
-        1073741823 === nextRenderExpirationTime ||
-        1073741823 !== newProps.childExpirationTime
+        1 === nextRenderExpirationTime ||
+        1 !== current$$1.childExpirationTime
       ) {
-        rootContainerInstance = 0;
-        for (type = newProps.child; null !== type; ) {
-          current = type.expirationTime;
-          viewConfig = type.childExpirationTime;
-          if (
-            0 === rootContainerInstance ||
-            (0 !== current && current < rootContainerInstance)
-          )
-            rootContainerInstance = current;
-          if (
-            0 === rootContainerInstance ||
-            (0 !== viewConfig && viewConfig < rootContainerInstance)
-          )
-            rootContainerInstance = viewConfig;
-          type = type.sibling;
-        }
-        newProps.childExpirationTime = rootContainerInstance;
+        newProps = 0;
+        for (
+          renderExpirationTime = current$$1.child;
+          null !== renderExpirationTime;
+
+        )
+          (type = renderExpirationTime.expirationTime),
+            (current = renderExpirationTime.childExpirationTime),
+            type > newProps && (newProps = type),
+            current > newProps && (newProps = current),
+            (renderExpirationTime = renderExpirationTime.sibling);
+        current$$1.childExpirationTime = newProps;
       }
-      if (null !== current$$1) return current$$1;
+      if (null !== nextUnitOfWork) return nextUnitOfWork;
       null !== returnFiber &&
-        0 === (returnFiber.effectTag & 512) &&
+        0 === (returnFiber.effectTag & 1024) &&
         (null === returnFiber.firstEffect &&
           (returnFiber.firstEffect = workInProgress.firstEffect),
         null !== workInProgress.lastEffect &&
@@ -4879,10 +5306,10 @@ function completeUnitOfWork(workInProgress) {
     } else {
       workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
       if (null !== workInProgress)
-        return (workInProgress.effectTag &= 511), workInProgress;
+        return (workInProgress.effectTag &= 1023), workInProgress;
       null !== returnFiber &&
         ((returnFiber.firstEffect = returnFiber.lastEffect = null),
-        (returnFiber.effectTag |= 512));
+        (returnFiber.effectTag |= 1024));
     }
     if (null !== siblingFiber) return siblingFiber;
     if (null !== returnFiber) workInProgress = returnFiber;
@@ -4896,43 +5323,48 @@ function performUnitOfWork(workInProgress) {
     workInProgress,
     nextRenderExpirationTime
   );
+  workInProgress.memoizedProps = workInProgress.pendingProps;
   null === next && (next = completeUnitOfWork(workInProgress));
   ReactCurrentOwner$2.current = null;
   return next;
 }
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root$jscomp$0, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
+  flushPassiveEffects();
   isWorking = !0;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
-  var expirationTime = root.nextExpirationTimeToWorkOn;
+  ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
+  var expirationTime = root$jscomp$0.nextExpirationTimeToWorkOn;
   if (
     expirationTime !== nextRenderExpirationTime ||
-    root !== nextRoot ||
+    root$jscomp$0 !== nextRoot ||
     null === nextUnitOfWork
   )
     resetStack(),
-      (nextRoot = root),
+      (nextRoot = root$jscomp$0),
       (nextRenderExpirationTime = expirationTime),
       (nextUnitOfWork = createWorkInProgress(
         nextRoot.current,
         null,
         nextRenderExpirationTime
       )),
-      (root.pendingCommitExpirationTime = 0);
+      (root$jscomp$0.pendingCommitExpirationTime = 0);
   var didFatal = !1;
   do {
     try {
       if (isYieldy)
-        for (; null !== nextUnitOfWork && !shouldYield(); )
+        for (; null !== nextUnitOfWork && !shouldYieldToRenderer(); )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
       else
         for (; null !== nextUnitOfWork; )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     } catch (thrownValue) {
-      if (null === nextUnitOfWork)
+      if (
+        ((lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = null),
+        null === nextUnitOfWork)
+      )
         (didFatal = !0), onUncaughtError(thrownValue);
       else {
         invariant(
@@ -4944,50 +5376,141 @@ function renderRoot(root, isYieldy, isExpired) {
         if (null === returnFiber) (didFatal = !0), onUncaughtError(thrownValue);
         else {
           a: {
-            var returnFiber$jscomp$0 = returnFiber,
+            var root = root$jscomp$0,
+              returnFiber$jscomp$0 = returnFiber,
               sourceFiber$jscomp$0 = sourceFiber,
               value = thrownValue;
             returnFiber = nextRenderExpirationTime;
-            sourceFiber$jscomp$0.effectTag |= 512;
+            sourceFiber$jscomp$0.effectTag |= 1024;
             sourceFiber$jscomp$0.firstEffect = sourceFiber$jscomp$0.lastEffect = null;
+            if (
+              null !== value &&
+              "object" === typeof value &&
+              "function" === typeof value.then
+            ) {
+              var thenable = value;
+              value = returnFiber$jscomp$0;
+              var earliestTimeoutMs = -1,
+                startTimeMs = -1;
+              do {
+                if (13 === value.tag) {
+                  var current$$1 = value.alternate;
+                  if (
+                    null !== current$$1 &&
+                    ((current$$1 = current$$1.memoizedState),
+                    null !== current$$1)
+                  ) {
+                    startTimeMs = 10 * (1073741822 - current$$1.timedOutAt);
+                    break;
+                  }
+                  current$$1 = value.pendingProps.maxDuration;
+                  if ("number" === typeof current$$1)
+                    if (0 >= current$$1) earliestTimeoutMs = 0;
+                    else if (
+                      -1 === earliestTimeoutMs ||
+                      current$$1 < earliestTimeoutMs
+                    )
+                      earliestTimeoutMs = current$$1;
+                }
+                value = value.return;
+              } while (null !== value);
+              value = returnFiber$jscomp$0;
+              do {
+                if ((current$$1 = 13 === value.tag))
+                  current$$1 =
+                    void 0 === value.memoizedProps.fallback
+                      ? !1
+                      : null === value.memoizedState;
+                if (current$$1) {
+                  returnFiber$jscomp$0 = retrySuspendedRoot.bind(
+                    null,
+                    root,
+                    value,
+                    sourceFiber$jscomp$0,
+                    0 === (value.mode & 1) ? 1073741823 : returnFiber
+                  );
+                  thenable.then(returnFiber$jscomp$0, returnFiber$jscomp$0);
+                  if (0 === (value.mode & 1)) {
+                    value.effectTag |= 64;
+                    sourceFiber$jscomp$0.effectTag &= -1957;
+                    1 === sourceFiber$jscomp$0.tag &&
+                      null === sourceFiber$jscomp$0.alternate &&
+                      (sourceFiber$jscomp$0.tag = 17);
+                    sourceFiber$jscomp$0.expirationTime = returnFiber;
+                    break a;
+                  }
+                  -1 === earliestTimeoutMs
+                    ? (root = 1073741823)
+                    : (-1 === startTimeMs &&
+                        (startTimeMs =
+                          10 *
+                            (1073741822 -
+                              findEarliestOutstandingPriorityLevel(
+                                root,
+                                returnFiber
+                              )) -
+                          5e3),
+                      (root = startTimeMs + earliestTimeoutMs));
+                  0 <= root &&
+                    nextLatestAbsoluteTimeoutMs < root &&
+                    (nextLatestAbsoluteTimeoutMs = root);
+                  value.effectTag |= 2048;
+                  value.expirationTime = returnFiber;
+                  break a;
+                }
+                value = value.return;
+              } while (null !== value);
+              value = Error(
+                (getComponentName(sourceFiber$jscomp$0.type) ||
+                  "A React component") +
+                  " suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." +
+                  getStackByFiberInDevAndProd(sourceFiber$jscomp$0)
+              );
+            }
             nextRenderDidError = !0;
             value = createCapturedValue(value, sourceFiber$jscomp$0);
+            root = returnFiber$jscomp$0;
             do {
-              switch (returnFiber$jscomp$0.tag) {
-                case 5:
-                  returnFiber$jscomp$0.effectTag |= 1024;
-                  returnFiber$jscomp$0.expirationTime = returnFiber;
+              switch (root.tag) {
+                case 3:
+                  sourceFiber$jscomp$0 = value;
+                  root.effectTag |= 2048;
+                  root.expirationTime = returnFiber;
                   returnFiber = createRootErrorUpdate(
-                    returnFiber$jscomp$0,
-                    value,
+                    root,
+                    sourceFiber$jscomp$0,
                     returnFiber
                   );
-                  enqueueCapturedUpdate(returnFiber$jscomp$0, returnFiber);
+                  enqueueCapturedUpdate(root, returnFiber);
                   break a;
-                case 2:
-                case 3:
-                  sourceFiber$jscomp$0 = value;
-                  var instance = returnFiber$jscomp$0.stateNode;
+                case 1:
                   if (
-                    0 === (returnFiber$jscomp$0.effectTag & 64) &&
-                    null !== instance &&
-                    "function" === typeof instance.componentDidCatch &&
-                    (null === legacyErrorBoundariesThatAlreadyFailed ||
-                      !legacyErrorBoundariesThatAlreadyFailed.has(instance))
+                    ((sourceFiber$jscomp$0 = value),
+                    (returnFiber$jscomp$0 = root.type),
+                    (thenable = root.stateNode),
+                    0 === (root.effectTag & 64) &&
+                      ("function" ===
+                        typeof returnFiber$jscomp$0.getDerivedStateFromError ||
+                        (null !== thenable &&
+                          "function" === typeof thenable.componentDidCatch &&
+                          (null === legacyErrorBoundariesThatAlreadyFailed ||
+                            !legacyErrorBoundariesThatAlreadyFailed.has(
+                              thenable
+                            )))))
                   ) {
-                    returnFiber$jscomp$0.effectTag |= 1024;
-                    returnFiber$jscomp$0.expirationTime = returnFiber;
+                    root.effectTag |= 2048;
+                    root.expirationTime = returnFiber;
                     returnFiber = createClassErrorUpdate(
-                      returnFiber$jscomp$0,
+                      root,
                       sourceFiber$jscomp$0,
                       returnFiber
                     );
-                    enqueueCapturedUpdate(returnFiber$jscomp$0, returnFiber);
+                    enqueueCapturedUpdate(root, returnFiber);
                     break a;
                   }
               }
-              returnFiber$jscomp$0 = returnFiber$jscomp$0.return;
-            } while (null !== returnFiber$jscomp$0);
+              root = root.return;
+            } while (null !== root);
           }
           nextUnitOfWork = completeUnitOfWork(sourceFiber);
           continue;
@@ -4998,201 +5521,192 @@ function renderRoot(root, isYieldy, isExpired) {
   } while (1);
   isWorking = !1;
   lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = ReactCurrentOwner$2.currentDispatcher = null;
-  if (didFatal) (nextRoot = null), (root.finishedWork = null);
-  else if (null !== nextUnitOfWork) root.finishedWork = null;
+  if (didFatal) (nextRoot = null), (root$jscomp$0.finishedWork = null);
+  else if (null !== nextUnitOfWork) root$jscomp$0.finishedWork = null;
   else {
-    isYieldy = root.current.alternate;
+    didFatal = root$jscomp$0.current.alternate;
     invariant(
-      null !== isYieldy,
+      null !== didFatal,
       "Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."
     );
     nextRoot = null;
     if (nextRenderDidError) {
-      didFatal = root.latestPendingTime;
-      sourceFiber = root.latestSuspendedTime;
-      returnFiber = root.latestPingedTime;
+      sourceFiber = root$jscomp$0.latestPendingTime;
+      returnFiber = root$jscomp$0.latestSuspendedTime;
+      root = root$jscomp$0.latestPingedTime;
       if (
-        (0 !== didFatal && didFatal > expirationTime) ||
-        (0 !== sourceFiber && sourceFiber > expirationTime) ||
-        (0 !== returnFiber && returnFiber > expirationTime)
+        (0 !== sourceFiber && sourceFiber < expirationTime) ||
+        (0 !== returnFiber && returnFiber < expirationTime) ||
+        (0 !== root && root < expirationTime)
       ) {
-        root.didError = !1;
-        isExpired = root.latestPingedTime;
-        0 !== isExpired &&
-          isExpired <= expirationTime &&
-          (root.latestPingedTime = 0);
-        isExpired = root.earliestPendingTime;
-        isYieldy = root.latestPendingTime;
-        isExpired === expirationTime
-          ? (root.earliestPendingTime =
-              isYieldy === expirationTime
-                ? (root.latestPendingTime = 0)
-                : isYieldy)
-          : isYieldy === expirationTime && (root.latestPendingTime = isExpired);
-        isExpired = root.earliestSuspendedTime;
-        isYieldy = root.latestSuspendedTime;
-        0 === isExpired
-          ? (root.earliestSuspendedTime = root.latestSuspendedTime = expirationTime)
-          : isExpired > expirationTime
-            ? (root.earliestSuspendedTime = expirationTime)
-            : isYieldy < expirationTime &&
-              (root.latestSuspendedTime = expirationTime);
-        findNextExpirationTimeToWorkOn(expirationTime, root);
-        root.expirationTime = root.expirationTime;
+        markSuspendedPriorityLevel(root$jscomp$0, expirationTime);
+        onSuspend(
+          root$jscomp$0,
+          didFatal,
+          expirationTime,
+          root$jscomp$0.expirationTime,
+          -1
+        );
         return;
       }
-      if (!root.didError && !isExpired) {
-        root.didError = !0;
-        root.nextExpirationTimeToWorkOn = expirationTime;
-        root.expirationTime = 1;
+      if (!root$jscomp$0.didError && isYieldy) {
+        root$jscomp$0.didError = !0;
+        expirationTime = root$jscomp$0.nextExpirationTimeToWorkOn = expirationTime;
+        isYieldy = root$jscomp$0.expirationTime = 1073741823;
+        onSuspend(root$jscomp$0, didFatal, expirationTime, isYieldy, -1);
         return;
       }
     }
-    root.pendingCommitExpirationTime = expirationTime;
-    root.finishedWork = isYieldy;
+    isYieldy && -1 !== nextLatestAbsoluteTimeoutMs
+      ? (markSuspendedPriorityLevel(root$jscomp$0, expirationTime),
+        (isYieldy =
+          10 *
+          (1073741822 -
+            findEarliestOutstandingPriorityLevel(
+              root$jscomp$0,
+              expirationTime
+            ))),
+        isYieldy < nextLatestAbsoluteTimeoutMs &&
+          (nextLatestAbsoluteTimeoutMs = isYieldy),
+        (isYieldy = 10 * (1073741822 - requestCurrentTime())),
+        (isYieldy = nextLatestAbsoluteTimeoutMs - isYieldy),
+        onSuspend(
+          root$jscomp$0,
+          didFatal,
+          expirationTime,
+          root$jscomp$0.expirationTime,
+          0 > isYieldy ? 0 : isYieldy
+        ))
+      : ((root$jscomp$0.pendingCommitExpirationTime = expirationTime),
+        (root$jscomp$0.finishedWork = didFatal));
   }
 }
-function captureCommitPhaseError(fiber, error) {
-  var JSCompiler_inline_result;
-  a: {
-    invariant(
-      !isWorking || isCommitting$1,
-      "dispatch: Cannot dispatch during the render phase."
-    );
-    for (
-      JSCompiler_inline_result = fiber.return;
-      null !== JSCompiler_inline_result;
-
-    ) {
-      switch (JSCompiler_inline_result.tag) {
-        case 2:
-        case 3:
-          var instance = JSCompiler_inline_result.stateNode;
-          if (
-            "function" ===
-              typeof JSCompiler_inline_result.type.getDerivedStateFromCatch ||
-            ("function" === typeof instance.componentDidCatch &&
-              (null === legacyErrorBoundariesThatAlreadyFailed ||
-                !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
-          ) {
-            fiber = createCapturedValue(error, fiber);
-            fiber = createClassErrorUpdate(JSCompiler_inline_result, fiber, 1);
-            enqueueUpdate(JSCompiler_inline_result, fiber);
-            scheduleWork(JSCompiler_inline_result, 1);
-            JSCompiler_inline_result = void 0;
-            break a;
-          }
-          break;
-        case 5:
-          fiber = createCapturedValue(error, fiber);
-          fiber = createRootErrorUpdate(JSCompiler_inline_result, fiber, 1);
-          enqueueUpdate(JSCompiler_inline_result, fiber);
-          scheduleWork(JSCompiler_inline_result, 1);
-          JSCompiler_inline_result = void 0;
-          break a;
-      }
-      JSCompiler_inline_result = JSCompiler_inline_result.return;
+function captureCommitPhaseError(sourceFiber, value) {
+  for (var fiber = sourceFiber.return; null !== fiber; ) {
+    switch (fiber.tag) {
+      case 1:
+        var instance = fiber.stateNode;
+        if (
+          "function" === typeof fiber.type.getDerivedStateFromError ||
+          ("function" === typeof instance.componentDidCatch &&
+            (null === legacyErrorBoundariesThatAlreadyFailed ||
+              !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
+        ) {
+          sourceFiber = createCapturedValue(value, sourceFiber);
+          sourceFiber = createClassErrorUpdate(fiber, sourceFiber, 1073741823);
+          enqueueUpdate(fiber, sourceFiber);
+          scheduleWork(fiber, 1073741823);
+          return;
+        }
+        break;
+      case 3:
+        sourceFiber = createCapturedValue(value, sourceFiber);
+        sourceFiber = createRootErrorUpdate(fiber, sourceFiber, 1073741823);
+        enqueueUpdate(fiber, sourceFiber);
+        scheduleWork(fiber, 1073741823);
+        return;
     }
-    5 === fiber.tag &&
-      ((JSCompiler_inline_result = createCapturedValue(error, fiber)),
-      (JSCompiler_inline_result = createRootErrorUpdate(
-        fiber,
-        JSCompiler_inline_result,
-        1
-      )),
-      enqueueUpdate(fiber, JSCompiler_inline_result),
-      scheduleWork(fiber, 1));
-    JSCompiler_inline_result = void 0;
+    fiber = fiber.return;
   }
-  return JSCompiler_inline_result;
+  3 === sourceFiber.tag &&
+    ((fiber = createCapturedValue(value, sourceFiber)),
+    (fiber = createRootErrorUpdate(sourceFiber, fiber, 1073741823)),
+    enqueueUpdate(sourceFiber, fiber),
+    scheduleWork(sourceFiber, 1073741823));
 }
 function computeExpirationForFiber(currentTime, fiber) {
   isWorking
-    ? (currentTime = isCommitting$1 ? 1 : nextRenderExpirationTime)
+    ? (currentTime = isCommitting$1 ? 1073741823 : nextRenderExpirationTime)
     : fiber.mode & 1
       ? ((currentTime = isBatchingInteractiveUpdates
-          ? 2 + 10 * ((((currentTime - 2 + 15) / 10) | 0) + 1)
-          : 2 + 25 * ((((currentTime - 2 + 500) / 25) | 0) + 1)),
+          ? 1073741822 - 10 * ((((1073741822 - currentTime + 15) / 10) | 0) + 1)
+          : 1073741822 -
+            25 * ((((1073741822 - currentTime + 500) / 25) | 0) + 1)),
         null !== nextRoot &&
           currentTime === nextRenderExpirationTime &&
-          (currentTime += 1))
-      : (currentTime = 1);
+          --currentTime)
+      : (currentTime = 1073741823);
   isBatchingInteractiveUpdates &&
     (0 === lowestPriorityPendingInteractiveExpirationTime ||
-      currentTime > lowestPriorityPendingInteractiveExpirationTime) &&
+      currentTime < lowestPriorityPendingInteractiveExpirationTime) &&
     (lowestPriorityPendingInteractiveExpirationTime = currentTime);
   return currentTime;
 }
-function scheduleWork(fiber, expirationTime) {
-  a: {
-    if (0 === fiber.expirationTime || fiber.expirationTime > expirationTime)
-      fiber.expirationTime = expirationTime;
-    var alternate = fiber.alternate;
-    null !== alternate &&
-      (0 === alternate.expirationTime ||
-        alternate.expirationTime > expirationTime) &&
-      (alternate.expirationTime = expirationTime);
-    var node = fiber.return;
-    if (null === node && 5 === fiber.tag) fiber = fiber.stateNode;
-    else {
-      for (; null !== node; ) {
-        alternate = node.alternate;
-        if (
-          0 === node.childExpirationTime ||
-          node.childExpirationTime > expirationTime
-        )
-          node.childExpirationTime = expirationTime;
-        null !== alternate &&
-          (0 === alternate.childExpirationTime ||
-            alternate.childExpirationTime > expirationTime) &&
-          (alternate.childExpirationTime = expirationTime);
-        if (null === node.return && 5 === node.tag) {
-          fiber = node.stateNode;
-          break a;
-        }
-        node = node.return;
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = root.earliestSuspendedTime;
+  var latestSuspendedTime = root.latestSuspendedTime;
+  if (
+    0 !== retryTime &&
+    suspendedTime <= retryTime &&
+    suspendedTime >= latestSuspendedTime
+  ) {
+    latestSuspendedTime = retryTime = suspendedTime;
+    root.didError = !1;
+    var latestPingedTime = root.latestPingedTime;
+    if (0 === latestPingedTime || latestPingedTime > latestSuspendedTime)
+      root.latestPingedTime = latestSuspendedTime;
+    findNextExpirationTimeToWorkOn(latestSuspendedTime, root);
+  } else
+    (retryTime = requestCurrentTime()),
+      (retryTime = computeExpirationForFiber(retryTime, boundaryFiber)),
+      markPendingPriorityLevel(root, retryTime);
+  0 !== (boundaryFiber.mode & 1) &&
+    root === nextRoot &&
+    nextRenderExpirationTime === suspendedTime &&
+    (nextRoot = null);
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  0 === (boundaryFiber.mode & 1) &&
+    (scheduleWorkToRoot(sourceFiber, retryTime),
+    1 === sourceFiber.tag &&
+      null !== sourceFiber.stateNode &&
+      ((boundaryFiber = createUpdate(retryTime)),
+      (boundaryFiber.tag = 2),
+      enqueueUpdate(sourceFiber, boundaryFiber)));
+  sourceFiber = root.expirationTime;
+  0 !== sourceFiber && requestWork(root, sourceFiber);
+}
+function scheduleWorkToRoot(fiber, expirationTime) {
+  fiber.expirationTime < expirationTime &&
+    (fiber.expirationTime = expirationTime);
+  var alternate = fiber.alternate;
+  null !== alternate &&
+    alternate.expirationTime < expirationTime &&
+    (alternate.expirationTime = expirationTime);
+  var node = fiber.return,
+    root = null;
+  if (null === node && 3 === fiber.tag) root = fiber.stateNode;
+  else
+    for (; null !== node; ) {
+      alternate = node.alternate;
+      node.childExpirationTime < expirationTime &&
+        (node.childExpirationTime = expirationTime);
+      null !== alternate &&
+        alternate.childExpirationTime < expirationTime &&
+        (alternate.childExpirationTime = expirationTime);
+      if (null === node.return && 3 === node.tag) {
+        root = node.stateNode;
+        break;
       }
-      fiber = null;
+      node = node.return;
     }
-  }
-  if (null !== fiber) {
-    !isWorking &&
+  return root;
+}
+function scheduleWork(fiber, expirationTime) {
+  fiber = scheduleWorkToRoot(fiber, expirationTime);
+  null !== fiber &&
+    (!isWorking &&
       0 !== nextRenderExpirationTime &&
-      expirationTime < nextRenderExpirationTime &&
-      resetStack();
-    markPendingPriorityLevel(fiber, expirationTime);
-    if (!isWorking || isCommitting$1 || nextRoot !== fiber) {
-      expirationTime = fiber;
-      fiber = fiber.expirationTime;
-      if (null === expirationTime.nextScheduledRoot)
-        (expirationTime.expirationTime = fiber),
-          null === lastScheduledRoot
-            ? ((firstScheduledRoot = lastScheduledRoot = expirationTime),
-              (expirationTime.nextScheduledRoot = expirationTime))
-            : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = expirationTime),
-              (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot));
-      else if (
-        ((alternate = expirationTime.expirationTime),
-        0 === alternate || fiber < alternate)
-      )
-        expirationTime.expirationTime = fiber;
-      isRendering ||
-        (isBatchingUpdates
-          ? isUnbatchingUpdates &&
-            ((nextFlushedRoot = expirationTime),
-            (nextFlushedExpirationTime = 1),
-            performWorkOnRoot(expirationTime, 1, !0))
-          : 1 === fiber
-            ? performWork(1, null)
-            : scheduleCallbackWithExpirationTime(expirationTime, fiber));
-    }
+      expirationTime > nextRenderExpirationTime &&
+      resetStack(),
+    markPendingPriorityLevel(fiber, expirationTime),
+    (isWorking && !isCommitting$1 && nextRoot === fiber) ||
+      requestWork(fiber, fiber.expirationTime),
     nestedUpdateCount > NESTED_UPDATE_LIMIT &&
       ((nestedUpdateCount = 0),
       invariant(
         !1,
         "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops."
-      ));
-  }
+      )));
 }
 var firstScheduledRoot = null,
   lastScheduledRoot = null,
@@ -5202,27 +5716,25 @@ var firstScheduledRoot = null,
   nextFlushedRoot = null,
   nextFlushedExpirationTime = 0,
   lowestPriorityPendingInteractiveExpirationTime = 0,
-  deadlineDidExpire = !1,
   hasUnhandledError = !1,
   unhandledError = null,
-  deadline = null,
   isBatchingUpdates = !1,
   isUnbatchingUpdates = !1,
   isBatchingInteractiveUpdates = !1,
   completedBatches = null,
   originalStartTimeMs = now$1(),
-  currentRendererTime = ((originalStartTimeMs / 10) | 0) + 2,
+  currentRendererTime = 1073741822 - ((originalStartTimeMs / 10) | 0),
   currentSchedulerTime = currentRendererTime,
   NESTED_UPDATE_LIMIT = 50,
   nestedUpdateCount = 0,
-  lastCommittedRootDuringThisBatch = null,
-  timeHeuristicForUnitOfWork = 1;
+  lastCommittedRootDuringThisBatch = null;
 function recomputeCurrentRendererTime() {
-  currentRendererTime = (((now$1() - originalStartTimeMs) / 10) | 0) + 2;
+  currentRendererTime =
+    1073741822 - (((now$1() - originalStartTimeMs) / 10) | 0);
 }
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (0 !== callbackExpirationTime) {
-    if (expirationTime > callbackExpirationTime) return;
+    if (expirationTime < callbackExpirationTime) return;
     null !== callbackID &&
       ((root = callbackID), (scheduledCallback = null), clearTimeout(root));
   }
@@ -5231,17 +5743,65 @@ function scheduleCallbackWithExpirationTime(root, expirationTime) {
   scheduledCallback = performAsyncWork;
   callbackID = setTimeout(setTimeoutCallback, 1);
 }
+function onSuspend(
+  root,
+  finishedWork,
+  suspendedExpirationTime,
+  rootExpirationTime,
+  msUntilTimeout
+) {
+  root.expirationTime = rootExpirationTime;
+  0 !== msUntilTimeout || shouldYieldToRenderer()
+    ? 0 < msUntilTimeout &&
+      (root.timeoutHandle = scheduleTimeout(
+        onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
+        msUntilTimeout
+      ))
+    : ((root.pendingCommitExpirationTime = suspendedExpirationTime),
+      (root.finishedWork = finishedWork));
+}
+function onTimeout(root, finishedWork, suspendedExpirationTime) {
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  invariant(
+    !isRendering,
+    "work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method."
+  );
+  nextFlushedRoot = root;
+  nextFlushedExpirationTime = suspendedExpirationTime;
+  performWorkOnRoot(root, suspendedExpirationTime, !1);
+  performWork(1073741823, !1);
+}
 function requestCurrentTime() {
   if (isRendering) return currentSchedulerTime;
   findHighestPriorityRoot();
-  if (
-    0 === nextFlushedExpirationTime ||
-    1073741823 === nextFlushedExpirationTime
-  )
+  if (0 === nextFlushedExpirationTime || 1 === nextFlushedExpirationTime)
     recomputeCurrentRendererTime(),
       (currentSchedulerTime = currentRendererTime);
   return currentSchedulerTime;
 }
+function requestWork(root, expirationTime) {
+  null === root.nextScheduledRoot
+    ? ((root.expirationTime = expirationTime),
+      null === lastScheduledRoot
+        ? ((firstScheduledRoot = lastScheduledRoot = root),
+          (root.nextScheduledRoot = root))
+        : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = root),
+          (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot)))
+    : expirationTime > root.expirationTime &&
+      (root.expirationTime = expirationTime);
+  isRendering ||
+    (isBatchingUpdates
+      ? isUnbatchingUpdates &&
+        ((nextFlushedRoot = root),
+        (nextFlushedExpirationTime = 1073741823),
+        performWorkOnRoot(root, 1073741823, !1))
+      : 1073741823 === expirationTime
+        ? performWork(1073741823, !1)
+        : scheduleCallbackWithExpirationTime(root, expirationTime));
+}
 function findHighestPriorityRoot() {
   var highestPriorityWork = 0,
     highestPriorityRoot = null;
@@ -5275,14 +5835,11 @@ function findHighestPriorityRoot() {
             (root.nextScheduledRoot = null);
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          0 === highestPriorityWork ||
-          remainingExpirationTime < highestPriorityWork
-        )
-          (highestPriorityWork = remainingExpirationTime),
-            (highestPriorityRoot = root);
+        remainingExpirationTime > highestPriorityWork &&
+          ((highestPriorityWork = remainingExpirationTime),
+          (highestPriorityRoot = root));
         if (root === lastScheduledRoot) break;
-        if (1 === highestPriorityWork) break;
+        if (1073741823 === highestPriorityWork) break;
         previousScheduledRoot = root;
         root = root.nextScheduledRoot;
       }
@@ -5290,38 +5847,44 @@ function findHighestPriorityRoot() {
   nextFlushedRoot = highestPriorityRoot;
   nextFlushedExpirationTime = highestPriorityWork;
 }
-function performAsyncWork(dl) {
-  if (dl.didTimeout && null !== firstScheduledRoot) {
-    recomputeCurrentRendererTime();
-    var root = firstScheduledRoot;
-    do {
-      var expirationTime = root.expirationTime;
-      0 !== expirationTime &&
-        currentRendererTime >= expirationTime &&
-        (root.nextExpirationTimeToWorkOn = currentRendererTime);
-      root = root.nextScheduledRoot;
-    } while (root !== firstScheduledRoot);
+var didYield = !1;
+function shouldYieldToRenderer() {
+  return didYield ? !0 : frameDeadline <= now$1() ? (didYield = !0) : !1;
+}
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer() && null !== firstScheduledRoot) {
+      recomputeCurrentRendererTime();
+      var root = firstScheduledRoot;
+      do {
+        var expirationTime = root.expirationTime;
+        0 !== expirationTime &&
+          currentRendererTime <= expirationTime &&
+          (root.nextExpirationTimeToWorkOn = currentRendererTime);
+        root = root.nextScheduledRoot;
+      } while (root !== firstScheduledRoot);
+    }
+    performWork(0, !0);
+  } finally {
+    didYield = !1;
   }
-  performWork(0, dl);
 }
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
+function performWork(minExpirationTime, isYieldy) {
   findHighestPriorityRoot();
-  if (null !== deadline)
+  if (isYieldy)
     for (
       recomputeCurrentRendererTime(),
         currentSchedulerTime = currentRendererTime;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime);
 
     )
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       ),
         findHighestPriorityRoot(),
         recomputeCurrentRendererTime(),
@@ -5331,29 +5894,28 @@ function performWork(minExpirationTime, dl) {
       ;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime;
 
     )
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !0),
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !1),
         findHighestPriorityRoot();
-  null !== deadline && ((callbackExpirationTime = 0), (callbackID = null));
+  isYieldy && ((callbackExpirationTime = 0), (callbackID = null));
   0 !== nextFlushedExpirationTime &&
     scheduleCallbackWithExpirationTime(
       nextFlushedRoot,
       nextFlushedExpirationTime
     );
-  deadline = null;
-  deadlineDidExpire = !1;
   nestedUpdateCount = 0;
   lastCommittedRootDuringThisBatch = null;
   if (null !== completedBatches)
     for (
-      minExpirationTime = completedBatches, completedBatches = null, dl = 0;
-      dl < minExpirationTime.length;
-      dl++
+      minExpirationTime = completedBatches,
+        completedBatches = null,
+        isYieldy = 0;
+      isYieldy < minExpirationTime.length;
+      isYieldy++
     ) {
-      var batch = minExpirationTime[dl];
+      var batch = minExpirationTime[isYieldy];
       try {
         batch._onComplete();
       } catch (error) {
@@ -5367,39 +5929,45 @@ function performWork(minExpirationTime, dl) {
     (hasUnhandledError = !1),
     minExpirationTime);
 }
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
   isRendering = !0;
-  if (null === deadline || isExpired) {
-    var finishedWork = root.finishedWork;
-    null !== finishedWork
-      ? completeRoot(root, finishedWork, expirationTime)
+  if (isYieldy) {
+    var _finishedWork = root.finishedWork;
+    null !== _finishedWork
+      ? completeRoot(root, _finishedWork, expirationTime)
       : ((root.finishedWork = null),
-        renderRoot(root, !1, isExpired),
-        (finishedWork = root.finishedWork),
-        null !== finishedWork &&
-          completeRoot(root, finishedWork, expirationTime));
+        (_finishedWork = root.timeoutHandle),
+        -1 !== _finishedWork &&
+          ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+        renderRoot(root, isYieldy),
+        (_finishedWork = root.finishedWork),
+        null !== _finishedWork &&
+          (shouldYieldToRenderer()
+            ? (root.finishedWork = _finishedWork)
+            : completeRoot(root, _finishedWork, expirationTime)));
   } else
-    (finishedWork = root.finishedWork),
-      null !== finishedWork
-        ? completeRoot(root, finishedWork, expirationTime)
+    (_finishedWork = root.finishedWork),
+      null !== _finishedWork
+        ? completeRoot(root, _finishedWork, expirationTime)
         : ((root.finishedWork = null),
-          renderRoot(root, !0, isExpired),
-          (finishedWork = root.finishedWork),
-          null !== finishedWork &&
-            (shouldYield()
-              ? (root.finishedWork = finishedWork)
-              : completeRoot(root, finishedWork, expirationTime)));
+          (_finishedWork = root.timeoutHandle),
+          -1 !== _finishedWork &&
+            ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+          renderRoot(root, isYieldy),
+          (_finishedWork = root.finishedWork),
+          null !== _finishedWork &&
+            completeRoot(root, _finishedWork, expirationTime));
   isRendering = !1;
 }
 function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
   var firstBatch = root.firstBatch;
   if (
     null !== firstBatch &&
-    firstBatch._expirationTime <= expirationTime &&
+    firstBatch._expirationTime >= expirationTime &&
     (null === completedBatches
       ? (completedBatches = [firstBatch])
       : completedBatches.push(firstBatch),
@@ -5428,9 +5996,7 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
   var childExpirationTimeBeforeCommit =
     finishedWork$jscomp$0.childExpirationTime;
   firstBatch =
-    0 === firstBatch ||
-    (0 !== childExpirationTimeBeforeCommit &&
-      childExpirationTimeBeforeCommit < firstBatch)
+    childExpirationTimeBeforeCommit > firstBatch
       ? childExpirationTimeBeforeCommit
       : firstBatch;
   root.didError = !1;
@@ -5442,19 +6008,19 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
       (root.latestPingedTime = 0))
     : ((childExpirationTimeBeforeCommit = root.latestPendingTime),
       0 !== childExpirationTimeBeforeCommit &&
-        (childExpirationTimeBeforeCommit < firstBatch
+        (childExpirationTimeBeforeCommit > firstBatch
           ? (root.earliestPendingTime = root.latestPendingTime = 0)
-          : root.earliestPendingTime < firstBatch &&
+          : root.earliestPendingTime > firstBatch &&
             (root.earliestPendingTime = root.latestPendingTime)),
       (childExpirationTimeBeforeCommit = root.earliestSuspendedTime),
       0 === childExpirationTimeBeforeCommit
         ? markPendingPriorityLevel(root, firstBatch)
-        : firstBatch > root.latestSuspendedTime
+        : firstBatch < root.latestSuspendedTime
           ? ((root.earliestSuspendedTime = 0),
             (root.latestSuspendedTime = 0),
             (root.latestPingedTime = 0),
             markPendingPriorityLevel(root, firstBatch))
-          : firstBatch < childExpirationTimeBeforeCommit &&
+          : firstBatch > childExpirationTimeBeforeCommit &&
             markPendingPriorityLevel(root, firstBatch));
   findNextExpirationTimeToWorkOn(0, root);
   ReactCurrentOwner$2.current = null;
@@ -5469,30 +6035,34 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
     var error = void 0;
     try {
       for (; null !== nextEffect; ) {
-        if (nextEffect.effectTag & 256) {
-          var current$$1 = nextEffect.alternate;
+        if (nextEffect.effectTag & 256)
           a: {
-            var finishedWork = nextEffect;
+            var current$$1 = nextEffect.alternate,
+              finishedWork = nextEffect;
             switch (finishedWork.tag) {
-              case 2:
-              case 3:
+              case 0:
+              case 11:
+              case 15:
+                break a;
+              case 1:
                 if (finishedWork.effectTag & 256 && null !== current$$1) {
                   var prevProps = current$$1.memoizedProps,
                     prevState = current$$1.memoizedState,
-                    instance = finishedWork.stateNode;
-                  instance.props = finishedWork.memoizedProps;
-                  instance.state = finishedWork.memoizedState;
-                  var snapshot = instance.getSnapshotBeforeUpdate(
-                    prevProps,
-                    prevState
-                  );
+                    instance = finishedWork.stateNode,
+                    snapshot = instance.getSnapshotBeforeUpdate(
+                      finishedWork.elementType === finishedWork.type
+                        ? prevProps
+                        : resolveDefaultProps(finishedWork.type, prevProps),
+                      prevState
+                    );
                   instance.__reactInternalSnapshotBeforeUpdate = snapshot;
                 }
                 break a;
+              case 3:
               case 5:
-              case 7:
-              case 8:
               case 6:
+              case 4:
+              case 17:
                 break a;
               default:
                 invariant(
@@ -5501,7 +6071,6 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
                 );
             }
           }
-        }
         nextEffect = nextEffect.nextEffect;
       }
     } catch (e) {
@@ -5545,13 +6114,18 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
             commitWork(nextEffect.alternate, nextEffect);
             break;
           case 8:
-            (prevState = nextEffect),
-              unmountHostComponents(prevState),
-              (prevState.return = null),
-              (prevState.child = null),
-              prevState.alternate &&
-                ((prevState.alternate.child = null),
-                (prevState.alternate.return = null));
+            prevState = nextEffect;
+            unmountHostComponents(prevState);
+            prevState.return = null;
+            prevState.child = null;
+            prevState.memoizedState = null;
+            prevState.updateQueue = null;
+            var alternate = prevState.alternate;
+            null !== alternate &&
+              ((alternate.return = null),
+              (alternate.child = null),
+              (alternate.memoizedState = null),
+              (alternate.updateQueue = null));
         }
         nextEffect = nextEffect.nextEffect;
       }
@@ -5575,69 +6149,72 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
         var effectTag$jscomp$0 = nextEffect.effectTag;
         if (effectTag$jscomp$0 & 36) {
           var current$$1$jscomp$1 = nextEffect.alternate;
-          current$$1 = nextEffect;
-          prevProps = currentRef;
-          switch (current$$1.tag) {
-            case 2:
-            case 3:
-              var instance$jscomp$0 = current$$1.stateNode;
-              if (current$$1.effectTag & 4)
+          alternate = nextEffect;
+          current$$1 = currentRef;
+          switch (alternate.tag) {
+            case 0:
+            case 11:
+            case 15:
+              break;
+            case 1:
+              var instance$jscomp$0 = alternate.stateNode;
+              if (alternate.effectTag & 4)
                 if (null === current$$1$jscomp$1)
-                  (instance$jscomp$0.props = current$$1.memoizedProps),
-                    (instance$jscomp$0.state = current$$1.memoizedState),
-                    instance$jscomp$0.componentDidMount();
+                  instance$jscomp$0.componentDidMount();
                 else {
-                  var prevProps$jscomp$0 = current$$1$jscomp$1.memoizedProps,
-                    prevState$jscomp$0 = current$$1$jscomp$1.memoizedState;
-                  instance$jscomp$0.props = current$$1.memoizedProps;
-                  instance$jscomp$0.state = current$$1.memoizedState;
+                  var prevProps$jscomp$0 =
+                    alternate.elementType === alternate.type
+                      ? current$$1$jscomp$1.memoizedProps
+                      : resolveDefaultProps(
+                          alternate.type,
+                          current$$1$jscomp$1.memoizedProps
+                        );
                   instance$jscomp$0.componentDidUpdate(
                     prevProps$jscomp$0,
-                    prevState$jscomp$0,
+                    current$$1$jscomp$1.memoizedState,
                     instance$jscomp$0.__reactInternalSnapshotBeforeUpdate
                   );
                 }
-              var updateQueue = current$$1.updateQueue;
+              var updateQueue = alternate.updateQueue;
               null !== updateQueue &&
-                ((instance$jscomp$0.props = current$$1.memoizedProps),
-                (instance$jscomp$0.state = current$$1.memoizedState),
                 commitUpdateQueue(
-                  current$$1,
+                  alternate,
                   updateQueue,
                   instance$jscomp$0,
-                  prevProps
-                ));
+                  current$$1
+                );
               break;
-            case 5:
-              var _updateQueue = current$$1.updateQueue;
+            case 3:
+              var _updateQueue = alternate.updateQueue;
               if (null !== _updateQueue) {
-                prevState = null;
-                if (null !== current$$1.child)
-                  switch (current$$1.child.tag) {
-                    case 7:
-                      prevState = current$$1.child.stateNode;
+                prevProps = null;
+                if (null !== alternate.child)
+                  switch (alternate.child.tag) {
+                    case 5:
+                      prevProps = alternate.child.stateNode;
                       break;
-                    case 2:
-                    case 3:
-                      prevState = current$$1.child.stateNode;
+                    case 1:
+                      prevProps = alternate.child.stateNode;
                   }
                 commitUpdateQueue(
-                  current$$1,
+                  alternate,
                   _updateQueue,
-                  prevState,
-                  prevProps
+                  prevProps,
+                  current$$1
                 );
               }
               break;
-            case 7:
-              break;
-            case 8:
+            case 5:
               break;
             case 6:
               break;
-            case 15:
+            case 4:
+              break;
+            case 12:
+              break;
+            case 13:
               break;
-            case 16:
+            case 17:
               break;
             default:
               invariant(
@@ -5651,7 +6228,7 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
           if (null !== ref) {
             var instance$jscomp$1 = nextEffect.stateNode;
             switch (nextEffect.tag) {
-              case 7:
+              case 5:
                 var instanceToUse = instance$jscomp$1;
                 break;
               default:
@@ -5662,9 +6239,7 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
               : (ref.current = instanceToUse);
           }
         }
-        var next = nextEffect.nextEffect;
-        nextEffect.nextEffect = null;
-        nextEffect = next;
+        nextEffect = nextEffect.nextEffect;
       }
     } catch (e) {
       (effectTag = !0), (current$$1$jscomp$0 = e);
@@ -5683,8 +6258,7 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
   effectTag$jscomp$0 = finishedWork$jscomp$0.expirationTime;
   finishedWork$jscomp$0 = finishedWork$jscomp$0.childExpirationTime;
   finishedWork$jscomp$0 =
-    0 === effectTag$jscomp$0 ||
-    (0 !== finishedWork$jscomp$0 && finishedWork$jscomp$0 < effectTag$jscomp$0)
+    finishedWork$jscomp$0 > effectTag$jscomp$0
       ? finishedWork$jscomp$0
       : effectTag$jscomp$0;
   0 === finishedWork$jscomp$0 &&
@@ -5692,13 +6266,6 @@ function completeRoot(root, finishedWork$jscomp$0, expirationTime) {
   root.expirationTime = finishedWork$jscomp$0;
   root.finishedWork = null;
 }
-function shouldYield() {
-  return deadlineDidExpire
-    ? !0
-    : null === deadline || deadline.timeRemaining() > timeHeuristicForUnitOfWork
-      ? !1
-      : (deadlineDidExpire = !0);
-}
 function onUncaughtError(error) {
   invariant(
     null !== nextFlushedRoot,
@@ -5707,56 +6274,7 @@ function onUncaughtError(error) {
   nextFlushedRoot.expirationTime = 0;
   hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
 }
-function getContextForSubtree(parentComponent) {
-  if (!parentComponent) return emptyContextObject;
-  parentComponent = parentComponent._reactInternalFiber;
-  a: {
-    invariant(
-      2 === isFiberMountedImpl(parentComponent) &&
-        (2 === parentComponent.tag || 3 === parentComponent.tag),
-      "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
-    );
-    var parentContext = parentComponent;
-    do {
-      switch (parentContext.tag) {
-        case 5:
-          parentContext = parentContext.stateNode.context;
-          break a;
-        case 2:
-          if (isContextProvider(parentContext.type)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-          break;
-        case 3:
-          if (isContextProvider(parentContext.type._reactResult)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-      }
-      parentContext = parentContext.return;
-    } while (null !== parentContext);
-    invariant(
-      !1,
-      "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
-    );
-    parentContext = void 0;
-  }
-  if (2 === parentComponent.tag) {
-    var Component = parentComponent.type;
-    if (isContextProvider(Component))
-      return processChildContext(parentComponent, Component, parentContext);
-  } else if (
-    3 === parentComponent.tag &&
-    ((Component = parentComponent.type._reactResult),
-    isContextProvider(Component))
-  )
-    return processChildContext(parentComponent, Component, parentContext);
-  return parentContext;
-}
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = component._reactInternalFiber;
   void 0 === fiber &&
     ("function" === typeof component.render
@@ -5774,7 +6292,48 @@ function updateContainer(element, container, parentComponent, callback) {
     currentTime = requestCurrentTime();
   current$$1 = computeExpirationForFiber(currentTime, current$$1);
   currentTime = container.current;
-  parentComponent = getContextForSubtree(parentComponent);
+  a: if (parentComponent) {
+    parentComponent = parentComponent._reactInternalFiber;
+    b: {
+      invariant(
+        2 === isFiberMountedImpl(parentComponent) && 1 === parentComponent.tag,
+        "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
+      );
+      var parentContext = parentComponent;
+      do {
+        switch (parentContext.tag) {
+          case 3:
+            parentContext = parentContext.stateNode.context;
+            break b;
+          case 1:
+            if (isContextProvider(parentContext.type)) {
+              parentContext =
+                parentContext.stateNode
+                  .__reactInternalMemoizedMergedChildContext;
+              break b;
+            }
+        }
+        parentContext = parentContext.return;
+      } while (null !== parentContext);
+      invariant(
+        !1,
+        "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
+      );
+      parentContext = void 0;
+    }
+    if (1 === parentComponent.tag) {
+      var Component = parentComponent.type;
+      if (isContextProvider(Component)) {
+        parentComponent = processChildContext(
+          parentComponent,
+          Component,
+          parentContext
+        );
+        break a;
+      }
+    }
+    parentComponent = parentContext;
+  } else parentComponent = emptyContextObject;
   null === container.context
     ? (container.context = parentComponent)
     : (container.pendingContext = parentComponent);
@@ -5783,6 +6342,7 @@ function updateContainer(element, container, parentComponent, callback) {
   callback.payload = { element: element };
   container = void 0 === container ? null : container;
   null !== container && (callback.callback = container);
+  flushPassiveEffects();
   enqueueUpdate(currentTime, callback);
   scheduleWork(currentTime, current$$1);
   return current$$1;
@@ -5827,7 +6387,7 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle._nativeTag) return componentOrHandle._nativeTag;
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag)
     return componentOrHandle.canonical._nativeTag;
-  componentOrHandle = findHostInstance$1(componentOrHandle);
+  componentOrHandle = findHostInstance(componentOrHandle);
   return null == componentOrHandle
     ? componentOrHandle
     : componentOrHandle.canonical
@@ -5842,13 +6402,13 @@ _batchedUpdatesImpl = function(fn, a) {
   } finally {
     (isBatchingUpdates = previousIsBatchingUpdates) ||
       isRendering ||
-      performWork(1, null);
+      performWork(1073741823, !1);
   }
 };
 _flushInteractiveUpdatesImpl = function() {
   isRendering ||
     0 === lowestPriorityPendingInteractiveExpirationTime ||
-    (performWork(lowestPriorityPendingInteractiveExpirationTime, null),
+    (performWork(lowestPriorityPendingInteractiveExpirationTime, !1),
     (lowestPriorityPendingInteractiveExpirationTime = 0));
 };
 var roots = new Map(),
@@ -5923,12 +6483,12 @@ var roots = new Map(),
         };
         return ReactNativeComponent;
       })(React.Component);
-    })(findNodeHandle, findHostInstance$1),
+    })(findNodeHandle, findHostInstance),
     findNodeHandle: findNodeHandle,
     render: function(element, containerTag, callback) {
       var root = roots.get(containerTag);
       if (!root) {
-        root = new FiberNode(5, null, null, 0);
+        root = createFiber(3, null, null, 0);
         var root$jscomp$0 = {
           current: root,
           containerInfo: containerTag,
@@ -5956,7 +6516,7 @@ var roots = new Map(),
       updateContainer(element, root, null, callback);
       a: if (((element = root.current), element.child))
         switch (element.child.tag) {
-          case 7:
+          case 5:
             element = element.child.stateNode;
             break a;
           default:
@@ -6036,7 +6596,7 @@ var roots = new Map(),
             TextInputState.blurTextInput(findNodeHandle(this));
           }
         };
-      })(findNodeHandle, findHostInstance$1),
+      })(findNodeHandle, findHostInstance),
       computeComponentStackForErrorReporting: function(reactTag) {
         return (reactTag = getInstanceFromTag(reactTag))
           ? getStackByFiberInDevAndProd(reactTag)
@@ -6063,7 +6623,7 @@ var roots = new Map(),
   findFiberByHostInstance: getInstanceFromTag,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
   bundleType: 0,
-  version: "16.5.0",
+  version: "16.6.1",
   rendererPackageName: "react-native-renderer"
 });
 var ReactNativeRenderer$2 = { default: ReactNativeRenderer },
diff --git a/Libraries/Renderer/oss/ReactNativeRenderer-profiling.js b/Libraries/Renderer/oss/ReactNativeRenderer-profiling.js
index f9c2b56db17e78..4d323e348dd55e 100644
--- a/Libraries/Renderer/oss/ReactNativeRenderer-profiling.js
+++ b/Libraries/Renderer/oss/ReactNativeRenderer-profiling.js
@@ -19,7 +19,8 @@ var ReactNativeViewConfigRegistry = require("ReactNativeViewConfigRegistry"),
   deepDiffer = require("deepDiffer"),
   flattenStyle = require("flattenStyle"),
   TextInputState = require("TextInputState"),
-  tracking = require("schedule/tracking"),
+  tracing = require("scheduler/tracing"),
+  scheduler = require("scheduler"),
   ExceptionsManager = require("ExceptionsManager");
 function invariant(condition, format, a, b, c, d, e, f) {
   if (!condition) {
@@ -167,10 +168,10 @@ var plugins = [],
   getFiberCurrentPropsFromNode = null,
   getInstanceFromNode = null,
   getNodeFromInstance = null;
-function executeDispatch(event, simulated, listener, inst) {
-  simulated = event.type || "unknown-event";
+function executeDispatch(event, listener, inst) {
+  var type = event.type || "unknown-event";
   event.currentTarget = getNodeFromInstance(inst);
-  invokeGuardedCallbackAndCatchFirstError(simulated, listener, void 0, event);
+  invokeGuardedCallbackAndCatchFirstError(type, listener, void 0, event);
   event.currentTarget = null;
 }
 function executeDirectDispatch(event) {
@@ -216,10 +217,10 @@ function executeDispatchesAndReleaseTopLevel(e) {
         i < dispatchListeners.length && !e.isPropagationStopped();
         i++
       )
-        executeDispatch(e, !1, dispatchListeners[i], dispatchInstances[i]);
+        executeDispatch(e, dispatchListeners[i], dispatchInstances[i]);
     else
       dispatchListeners &&
-        executeDispatch(e, !1, dispatchListeners, dispatchInstances);
+        executeDispatch(e, dispatchListeners, dispatchInstances);
     e._dispatchListeners = null;
     e._dispatchInstances = null;
     e.isPersistent() || e.constructor.release(e);
@@ -294,7 +295,7 @@ function getListener(inst, registrationName) {
 }
 function getParent(inst) {
   do inst = inst.return;
-  while (inst && 7 !== inst.tag);
+  while (inst && 5 !== inst.tag);
   return inst ? inst : null;
 }
 function traverseTwoPhase(inst, fn, arg) {
@@ -956,10 +957,6 @@ var eventTypes$1 = {
       }
     }
   },
-  customBubblingEventTypes$1 =
-    ReactNativeViewConfigRegistry.customBubblingEventTypes,
-  customDirectEventTypes$1 =
-    ReactNativeViewConfigRegistry.customDirectEventTypes,
   ReactNativeBridgeEventPlugin = {
     eventTypes: ReactNativeViewConfigRegistry.eventTypes,
     extractEvents: function(
@@ -969,8 +966,10 @@ var eventTypes$1 = {
       nativeEventTarget
     ) {
       if (null == targetInst) return null;
-      var bubbleDispatchConfig = customBubblingEventTypes$1[topLevelType],
-        directDispatchConfig = customDirectEventTypes$1[topLevelType];
+      var bubbleDispatchConfig =
+          ReactNativeViewConfigRegistry.customBubblingEventTypes[topLevelType],
+        directDispatchConfig =
+          ReactNativeViewConfigRegistry.customDirectEventTypes[topLevelType];
       invariant(
         bubbleDispatchConfig || directDispatchConfig,
         'Unsupported top level event type "%s" dispatched',
@@ -1077,9 +1076,6 @@ function _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam) {
   });
 }
 RCTEventEmitter.register({
-  getListener: getListener,
-  registrationNames: registrationNameModules,
-  _receiveRootNodeIDEvent: _receiveRootNodeIDEvent,
   receiveEvent: function(rootNodeID, topLevelType, nativeEventParam) {
     _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam);
   },
@@ -1143,9 +1139,13 @@ var ReactSharedInternals =
   REACT_PROFILER_TYPE = hasSymbol ? Symbol.for("react.profiler") : 60114,
   REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for("react.provider") : 60109,
   REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for("react.context") : 60110,
-  REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for("react.async_mode") : 60111,
+  REACT_CONCURRENT_MODE_TYPE = hasSymbol
+    ? Symbol.for("react.concurrent_mode")
+    : 60111,
   REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for("react.forward_ref") : 60112,
-  REACT_PLACEHOLDER_TYPE = hasSymbol ? Symbol.for("react.placeholder") : 60113,
+  REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for("react.suspense") : 60113,
+  REACT_MEMO_TYPE = hasSymbol ? Symbol.for("react.memo") : 60115,
+  REACT_LAZY_TYPE = hasSymbol ? Symbol.for("react.lazy") : 60116,
   MAYBE_ITERATOR_SYMBOL = "function" === typeof Symbol && Symbol.iterator;
 function getIteratorFn(maybeIterable) {
   if (null === maybeIterable || "object" !== typeof maybeIterable) return null;
@@ -1159,8 +1159,8 @@ function getComponentName(type) {
   if ("function" === typeof type) return type.displayName || type.name || null;
   if ("string" === typeof type) return type;
   switch (type) {
-    case REACT_ASYNC_MODE_TYPE:
-      return "AsyncMode";
+    case REACT_CONCURRENT_MODE_TYPE:
+      return "ConcurrentMode";
     case REACT_FRAGMENT_TYPE:
       return "Fragment";
     case REACT_PORTAL_TYPE:
@@ -1169,28 +1169,28 @@ function getComponentName(type) {
       return "Profiler";
     case REACT_STRICT_MODE_TYPE:
       return "StrictMode";
-    case REACT_PLACEHOLDER_TYPE:
-      return "Placeholder";
+    case REACT_SUSPENSE_TYPE:
+      return "Suspense";
   }
-  if ("object" === typeof type) {
+  if ("object" === typeof type)
     switch (type.$$typeof) {
       case REACT_CONTEXT_TYPE:
         return "Context.Consumer";
       case REACT_PROVIDER_TYPE:
         return "Context.Provider";
       case REACT_FORWARD_REF_TYPE:
+        var innerType = type.render;
+        innerType = innerType.displayName || innerType.name || "";
         return (
-          (type = type.render),
-          (type = type.displayName || type.name || ""),
-          "" !== type ? "ForwardRef(" + type + ")" : "ForwardRef"
+          type.displayName ||
+          ("" !== innerType ? "ForwardRef(" + innerType + ")" : "ForwardRef")
         );
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+      case REACT_LAZY_TYPE:
+        if ((type = 1 === type._status ? type._result : null))
+          return getComponentName(type);
     }
-    if (
-      "function" === typeof type.then &&
-      (type = 1 === type._reactStatus ? type._reactResult : null)
-    )
-      return getComponentName(type);
-  }
   return null;
 }
 function isFiberMountedImpl(fiber) {
@@ -1201,7 +1201,7 @@ function isFiberMountedImpl(fiber) {
     for (; node.return; )
       if (((node = node.return), 0 !== (node.effectTag & 2))) return 1;
   }
-  return 5 === node.tag ? 2 : 3;
+  return 3 === node.tag ? 2 : 3;
 }
 function assertIsMounted(fiber) {
   invariant(
@@ -1277,14 +1277,14 @@ function findCurrentFiberUsingSlowPath(fiber) {
       "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue."
     );
   }
-  invariant(5 === a.tag, "Unable to find node on an unmounted component.");
+  invariant(3 === a.tag, "Unable to find node on an unmounted component.");
   return a.stateNode.current === a ? fiber : alternate;
 }
 function findCurrentHostFiber(parent) {
   parent = findCurrentFiberUsingSlowPath(parent);
   if (!parent) return null;
   for (var node = parent; ; ) {
-    if (7 === node.tag || 8 === node.tag) return node;
+    if (5 === node.tag || 6 === node.tag) return node;
     if (node.child) (node.child.return = node), (node = node.child);
     else {
       if (node === parent) break;
@@ -1592,23 +1592,17 @@ var ReactNativeFiberHostComponent = (function() {
           return Date.now();
         },
   scheduledCallback = null,
-  frameDeadline = 0,
-  frameDeadlineObject = {
-    timeRemaining: function() {
-      return frameDeadline - now$1();
-    },
-    didTimeout: !1
-  };
+  frameDeadline = 0;
 function setTimeoutCallback() {
   frameDeadline = now$1() + 5;
   var callback = scheduledCallback;
   scheduledCallback = null;
-  null !== callback && callback(frameDeadlineObject);
+  null !== callback && callback();
 }
 function shim$1() {
   invariant(
     !1,
-    "The current renderer does not support hyration. This error is likely caused by a bug in React. Please file an issue."
+    "The current renderer does not support hydration. This error is likely caused by a bug in React. Please file an issue."
   );
 }
 var UPDATE_SIGNAL = {},
@@ -1638,22 +1632,25 @@ function finalizeInitialChildren(parentInstance) {
   return !1;
 }
 var scheduleTimeout = setTimeout,
+  cancelTimeout = clearTimeout,
   BEFORE_SLASH_RE = /^(.*)[\\\/]/;
 function getStackByFiberInDevAndProd(workInProgress) {
   var info = "";
   do {
     a: switch (workInProgress.tag) {
-      case 4:
-      case 0:
-      case 1:
-      case 2:
       case 3:
+      case 4:
+      case 6:
       case 7:
       case 10:
+      case 9:
+        var JSCompiler_inline_result = "";
+        break a;
+      default:
         var owner = workInProgress._debugOwner,
           source = workInProgress._debugSource,
           name = getComponentName(workInProgress.type);
-        var JSCompiler_inline_result = null;
+        JSCompiler_inline_result = null;
         owner && (JSCompiler_inline_result = getComponentName(owner.type));
         owner = name;
         name = "";
@@ -1667,9 +1664,6 @@ function getStackByFiberInDevAndProd(workInProgress) {
           : JSCompiler_inline_result &&
             (name = " (created by " + JSCompiler_inline_result + ")");
         JSCompiler_inline_result = "\n    in " + (owner || "Unknown") + name;
-        break a;
-      default:
-        JSCompiler_inline_result = "";
     }
     info += JSCompiler_inline_result;
     workInProgress = workInProgress.return;
@@ -1801,7 +1795,7 @@ function injectInternals(internals) {
 function FiberNode(tag, pendingProps, key, mode) {
   this.tag = tag;
   this.key = key;
-  this.sibling = this.child = this.return = this.stateNode = this.type = null;
+  this.sibling = this.child = this.return = this.stateNode = this.type = this.elementType = null;
   this.index = 0;
   this.ref = null;
   this.pendingProps = pendingProps;
@@ -1815,19 +1809,33 @@ function FiberNode(tag, pendingProps, key, mode) {
   this.actualStartTime = -1;
   this.treeBaseDuration = this.selfBaseDuration = 0;
 }
+function createFiber(tag, pendingProps, key, mode) {
+  return new FiberNode(tag, pendingProps, key, mode);
+}
 function shouldConstruct(Component) {
   Component = Component.prototype;
   return !(!Component || !Component.isReactComponent);
 }
-function createWorkInProgress(current, pendingProps, expirationTime) {
+function resolveLazyComponentTag(Component) {
+  if ("function" === typeof Component)
+    return shouldConstruct(Component) ? 1 : 0;
+  if (void 0 !== Component && null !== Component) {
+    Component = Component.$$typeof;
+    if (Component === REACT_FORWARD_REF_TYPE) return 11;
+    if (Component === REACT_MEMO_TYPE) return 14;
+  }
+  return 2;
+}
+function createWorkInProgress(current, pendingProps) {
   var workInProgress = current.alternate;
   null === workInProgress
-    ? ((workInProgress = new FiberNode(
+    ? ((workInProgress = createFiber(
         current.tag,
         pendingProps,
         current.key,
         current.mode
       )),
+      (workInProgress.elementType = current.elementType),
       (workInProgress.type = current.type),
       (workInProgress.stateNode = current.stateNode),
       (workInProgress.alternate = current),
@@ -1840,10 +1848,7 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
       (workInProgress.actualDuration = 0),
       (workInProgress.actualStartTime = -1));
   workInProgress.childExpirationTime = current.childExpirationTime;
-  workInProgress.expirationTime =
-    pendingProps !== current.pendingProps
-      ? expirationTime
-      : current.expirationTime;
+  workInProgress.expirationTime = current.expirationTime;
   workInProgress.child = current.child;
   workInProgress.memoizedProps = current.memoizedProps;
   workInProgress.memoizedState = current.memoizedState;
@@ -1856,57 +1861,66 @@ function createWorkInProgress(current, pendingProps, expirationTime) {
   workInProgress.treeBaseDuration = current.treeBaseDuration;
   return workInProgress;
 }
-function createFiberFromElement(element, mode, expirationTime) {
-  var type = element.type,
-    key = element.key;
-  element = element.props;
-  var fiberTag = void 0;
-  if ("function" === typeof type) fiberTag = shouldConstruct(type) ? 2 : 4;
-  else if ("string" === typeof type) fiberTag = 7;
+function createFiberFromTypeAndProps(
+  type,
+  key,
+  pendingProps,
+  owner,
+  mode,
+  expirationTime
+) {
+  var fiberTag = 2;
+  owner = type;
+  if ("function" === typeof type) shouldConstruct(type) && (fiberTag = 1);
+  else if ("string" === typeof type) fiberTag = 5;
   else
     a: switch (type) {
       case REACT_FRAGMENT_TYPE:
         return createFiberFromFragment(
-          element.children,
+          pendingProps.children,
           mode,
           expirationTime,
           key
         );
-      case REACT_ASYNC_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 3;
-        break;
+      case REACT_CONCURRENT_MODE_TYPE:
+        return createFiberFromMode(pendingProps, mode | 3, expirationTime, key);
       case REACT_STRICT_MODE_TYPE:
-        fiberTag = 10;
-        mode |= 2;
-        break;
+        return createFiberFromMode(pendingProps, mode | 2, expirationTime, key);
       case REACT_PROFILER_TYPE:
         return (
-          (type = new FiberNode(15, element, key, mode | 4)),
+          (type = createFiber(12, pendingProps, key, mode | 4)),
+          (type.elementType = REACT_PROFILER_TYPE),
           (type.type = REACT_PROFILER_TYPE),
           (type.expirationTime = expirationTime),
           type
         );
-      case REACT_PLACEHOLDER_TYPE:
-        fiberTag = 16;
-        break;
+      case REACT_SUSPENSE_TYPE:
+        return (
+          (type = createFiber(13, pendingProps, key, mode)),
+          (type.elementType = REACT_SUSPENSE_TYPE),
+          (type.type = REACT_SUSPENSE_TYPE),
+          (type.expirationTime = expirationTime),
+          type
+        );
       default:
         if ("object" === typeof type && null !== type)
           switch (type.$$typeof) {
             case REACT_PROVIDER_TYPE:
-              fiberTag = 12;
+              fiberTag = 10;
               break a;
             case REACT_CONTEXT_TYPE:
-              fiberTag = 11;
+              fiberTag = 9;
               break a;
             case REACT_FORWARD_REF_TYPE:
-              fiberTag = 13;
+              fiberTag = 11;
+              break a;
+            case REACT_MEMO_TYPE:
+              fiberTag = 14;
+              break a;
+            case REACT_LAZY_TYPE:
+              fiberTag = 16;
+              owner = null;
               break a;
-            default:
-              if ("function" === typeof type.then) {
-                fiberTag = 4;
-                break a;
-              }
           }
         invariant(
           !1,
@@ -1915,24 +1929,33 @@ function createFiberFromElement(element, mode, expirationTime) {
           ""
         );
     }
-  mode = new FiberNode(fiberTag, element, key, mode);
-  mode.type = type;
-  mode.expirationTime = expirationTime;
-  return mode;
+  key = createFiber(fiberTag, pendingProps, key, mode);
+  key.elementType = type;
+  key.type = owner;
+  key.expirationTime = expirationTime;
+  return key;
 }
 function createFiberFromFragment(elements, mode, expirationTime, key) {
-  elements = new FiberNode(9, elements, key, mode);
+  elements = createFiber(7, elements, key, mode);
   elements.expirationTime = expirationTime;
   return elements;
 }
+function createFiberFromMode(pendingProps, mode, expirationTime, key) {
+  pendingProps = createFiber(8, pendingProps, key, mode);
+  mode = 0 === (mode & 1) ? REACT_STRICT_MODE_TYPE : REACT_CONCURRENT_MODE_TYPE;
+  pendingProps.elementType = mode;
+  pendingProps.type = mode;
+  pendingProps.expirationTime = expirationTime;
+  return pendingProps;
+}
 function createFiberFromText(content, mode, expirationTime) {
-  content = new FiberNode(8, content, null, mode);
+  content = createFiber(6, content, null, mode);
   content.expirationTime = expirationTime;
   return content;
 }
 function createFiberFromPortal(portal, mode, expirationTime) {
-  mode = new FiberNode(
-    6,
+  mode = createFiber(
+    4,
     null !== portal.children ? portal.children : [],
     portal.key,
     mode
@@ -1950,9 +1973,9 @@ function markPendingPriorityLevel(root, expirationTime) {
   var earliestPendingTime = root.earliestPendingTime;
   0 === earliestPendingTime
     ? (root.earliestPendingTime = root.latestPendingTime = expirationTime)
-    : earliestPendingTime > expirationTime
+    : earliestPendingTime < expirationTime
       ? (root.earliestPendingTime = expirationTime)
-      : root.latestPendingTime < expirationTime &&
+      : root.latestPendingTime > expirationTime &&
         (root.latestPendingTime = expirationTime);
   findNextExpirationTimeToWorkOn(expirationTime, root);
 }
@@ -1967,19 +1990,19 @@ function markCommittedPriorityLevels(root, earliestRemainingTime) {
   else {
     var latestPendingTime = root.latestPendingTime;
     0 !== latestPendingTime &&
-      (latestPendingTime < earliestRemainingTime
+      (latestPendingTime > earliestRemainingTime
         ? (root.earliestPendingTime = root.latestPendingTime = 0)
-        : root.earliestPendingTime < earliestRemainingTime &&
+        : root.earliestPendingTime > earliestRemainingTime &&
           (root.earliestPendingTime = root.latestPendingTime));
     latestPendingTime = root.earliestSuspendedTime;
     0 === latestPendingTime
       ? markPendingPriorityLevel(root, earliestRemainingTime)
-      : earliestRemainingTime > root.latestSuspendedTime
+      : earliestRemainingTime < root.latestSuspendedTime
         ? ((root.earliestSuspendedTime = 0),
           (root.latestSuspendedTime = 0),
           (root.latestPingedTime = 0),
           markPendingPriorityLevel(root, earliestRemainingTime))
-        : earliestRemainingTime < latestPendingTime &&
+        : earliestRemainingTime > latestPendingTime &&
           markPendingPriorityLevel(root, earliestRemainingTime);
   }
   findNextExpirationTimeToWorkOn(0, root);
@@ -1989,17 +2012,17 @@ function hasLowerPriorityWork(root, erroredExpirationTime) {
     latestSuspendedTime = root.latestSuspendedTime;
   root = root.latestPingedTime;
   return (
-    (0 !== latestPendingTime && latestPendingTime > erroredExpirationTime) ||
+    (0 !== latestPendingTime && latestPendingTime < erroredExpirationTime) ||
     (0 !== latestSuspendedTime &&
-      latestSuspendedTime > erroredExpirationTime) ||
-    (0 !== root && root > erroredExpirationTime)
+      latestSuspendedTime < erroredExpirationTime) ||
+    (0 !== root && root < erroredExpirationTime)
   );
 }
 function markSuspendedPriorityLevel(root, suspendedTime) {
   root.didError = !1;
   var latestPingedTime = root.latestPingedTime;
   0 !== latestPingedTime &&
-    latestPingedTime <= suspendedTime &&
+    latestPingedTime >= suspendedTime &&
     (root.latestPingedTime = 0);
   latestPingedTime = root.earliestPendingTime;
   var latestPendingTime = root.latestPendingTime;
@@ -2014,12 +2037,20 @@ function markSuspendedPriorityLevel(root, suspendedTime) {
   latestPendingTime = root.latestSuspendedTime;
   0 === latestPingedTime
     ? (root.earliestSuspendedTime = root.latestSuspendedTime = suspendedTime)
-    : latestPingedTime > suspendedTime
+    : latestPingedTime < suspendedTime
       ? (root.earliestSuspendedTime = suspendedTime)
-      : latestPendingTime < suspendedTime &&
+      : latestPendingTime > suspendedTime &&
         (root.latestSuspendedTime = suspendedTime);
   findNextExpirationTimeToWorkOn(suspendedTime, root);
 }
+function findEarliestOutstandingPriorityLevel(root, renderExpirationTime) {
+  var earliestPendingTime = root.earliestPendingTime;
+  root = root.earliestSuspendedTime;
+  earliestPendingTime > renderExpirationTime &&
+    (renderExpirationTime = earliestPendingTime);
+  root > renderExpirationTime && (renderExpirationTime = root);
+  return renderExpirationTime;
+}
 function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
   var earliestSuspendedTime = root.earliestSuspendedTime,
     latestSuspendedTime = root.latestSuspendedTime,
@@ -2029,12 +2060,11 @@ function findNextExpirationTimeToWorkOn(completedExpirationTime, root) {
     0 !== earliestPendingTime ? earliestPendingTime : latestPingedTime;
   0 === earliestPendingTime &&
     (0 === completedExpirationTime ||
-      latestSuspendedTime > completedExpirationTime) &&
+      latestSuspendedTime < completedExpirationTime) &&
     (earliestPendingTime = latestSuspendedTime);
   completedExpirationTime = earliestPendingTime;
   0 !== completedExpirationTime &&
-    0 !== earliestSuspendedTime &&
-    earliestSuspendedTime < completedExpirationTime &&
+    earliestSuspendedTime > completedExpirationTime &&
     (completedExpirationTime = earliestSuspendedTime);
   root.nextExpirationTimeToWorkOn = earliestPendingTime;
   root.expirationTime = completedExpirationTime;
@@ -2146,7 +2176,7 @@ function getStateFromUpdate(
           : workInProgress
       );
     case 3:
-      workInProgress.effectTag = (workInProgress.effectTag & -1025) | 64;
+      workInProgress.effectTag = (workInProgress.effectTag & -2049) | 64;
     case 0:
       workInProgress = update.payload;
       nextProps =
@@ -2179,58 +2209,52 @@ function processUpdateQueue(
 
   ) {
     var updateExpirationTime = update.expirationTime;
-    if (updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === newFirstUpdate &&
+    updateExpirationTime < renderExpirationTime
+      ? (null === newFirstUpdate &&
           ((newFirstUpdate = update), (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > updateExpirationTime)
-      )
-        newExpirationTime = updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < updateExpirationTime &&
+          (newExpirationTime = updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastEffect
             ? (queue.firstEffect = queue.lastEffect = update)
             : ((queue.lastEffect.nextEffect = update),
-              (queue.lastEffect = update)));
+              (queue.lastEffect = update))));
     update = update.next;
   }
   updateExpirationTime = null;
   for (update = queue.firstCapturedUpdate; null !== update; ) {
     var _updateExpirationTime = update.expirationTime;
-    if (_updateExpirationTime > renderExpirationTime) {
-      if (
-        (null === updateExpirationTime &&
+    _updateExpirationTime < renderExpirationTime
+      ? (null === updateExpirationTime &&
           ((updateExpirationTime = update),
           null === newFirstUpdate && (newBaseState = resultState)),
-        0 === newExpirationTime || newExpirationTime > _updateExpirationTime)
-      )
-        newExpirationTime = _updateExpirationTime;
-    } else
-      (resultState = getStateFromUpdate(
-        workInProgress,
-        queue,
-        update,
-        resultState,
-        props,
-        instance
-      )),
+        newExpirationTime < _updateExpirationTime &&
+          (newExpirationTime = _updateExpirationTime))
+      : ((resultState = getStateFromUpdate(
+          workInProgress,
+          queue,
+          update,
+          resultState,
+          props,
+          instance
+        )),
         null !== update.callback &&
           ((workInProgress.effectTag |= 32),
           (update.nextEffect = null),
           null === queue.lastCapturedEffect
             ? (queue.firstCapturedEffect = queue.lastCapturedEffect = update)
             : ((queue.lastCapturedEffect.nextEffect = update),
-              (queue.lastCapturedEffect = update)));
+              (queue.lastCapturedEffect = update))));
     update = update.next;
   }
   null === newFirstUpdate && (queue.lastUpdate = null);
@@ -2311,7 +2335,7 @@ function readContext(context, observedBits) {
     null === lastContextDependency
       ? (invariant(
           null !== currentlyRenderingFiber,
-          "Context.unstable_read(): Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
+          "Context can only be read while React is rendering, e.g. inside the render method or getDerivedStateFromProps."
         ),
         (currentlyRenderingFiber.firstContextDependency = lastContextDependency = observedBits))
       : (lastContextDependency = lastContextDependency.next = observedBits);
@@ -2397,7 +2421,47 @@ function shallowEqual(objA, objB) {
       return !1;
   return !0;
 }
-var emptyRefsObject = new React.Component().refs;
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    baseProps = Object.assign({}, baseProps);
+    Component = Component.defaultProps;
+    for (var propName in Component)
+      void 0 === baseProps[propName] &&
+        (baseProps[propName] = Component[propName]);
+  }
+  return baseProps;
+}
+function readLazyComponentType(lazyComponent) {
+  var result = lazyComponent._result;
+  switch (lazyComponent._status) {
+    case 1:
+      return result;
+    case 2:
+      throw result;
+    case 0:
+      throw result;
+    default:
+      throw ((lazyComponent._status = 0),
+      (result = lazyComponent._ctor),
+      (result = result()),
+      result.then(
+        function(moduleObject) {
+          0 === lazyComponent._status &&
+            ((moduleObject = moduleObject.default),
+            (lazyComponent._status = 1),
+            (lazyComponent._result = moduleObject));
+        },
+        function(error) {
+          0 === lazyComponent._status &&
+            ((lazyComponent._status = 2), (lazyComponent._result = error));
+        }
+      ),
+      (lazyComponent._result = result),
+      result);
+  }
+}
+var ReactCurrentOwner$4 = ReactSharedInternals.ReactCurrentOwner,
+  emptyRefsObject = new React.Component().refs;
 function applyDerivedStateFromProps(
   workInProgress,
   ctor,
@@ -2429,6 +2493,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2440,6 +2505,7 @@ var classComponentUpdater = {
     update.tag = 1;
     update.payload = payload;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   },
@@ -2450,6 +2516,7 @@ var classComponentUpdater = {
     var update = createUpdate(currentTime);
     update.tag = 2;
     void 0 !== callback && null !== callback && (update.callback = callback);
+    flushPassiveEffects();
     enqueueUpdate(inst, update);
     scheduleWork(inst, currentTime);
   }
@@ -2461,30 +2528,52 @@ function checkShouldComponentUpdate(
   newProps,
   oldState,
   newState,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = workInProgress.stateNode;
   return "function" === typeof workInProgress.shouldComponentUpdate
-    ? workInProgress.shouldComponentUpdate(
-        newProps,
-        newState,
-        nextLegacyContext
-      )
+    ? workInProgress.shouldComponentUpdate(newProps, newState, nextContext)
     : ctor.prototype && ctor.prototype.isPureReactComponent
       ? !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState)
       : !0;
 }
+function constructClassInstance(workInProgress, ctor, props) {
+  var isLegacyContextConsumer = !1,
+    unmaskedContext = emptyContextObject;
+  var context = ctor.contextType;
+  "object" === typeof context && null !== context
+    ? (context = ReactCurrentOwner$4.currentDispatcher.readContext(context))
+    : ((unmaskedContext = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (isLegacyContextConsumer = ctor.contextTypes),
+      (context = (isLegacyContextConsumer =
+        null !== isLegacyContextConsumer && void 0 !== isLegacyContextConsumer)
+        ? getMaskedContext(workInProgress, unmaskedContext)
+        : emptyContextObject));
+  ctor = new ctor(props, context);
+  workInProgress.memoizedState =
+    null !== ctor.state && void 0 !== ctor.state ? ctor.state : null;
+  ctor.updater = classComponentUpdater;
+  workInProgress.stateNode = ctor;
+  ctor._reactInternalFiber = workInProgress;
+  isLegacyContextConsumer &&
+    ((workInProgress = workInProgress.stateNode),
+    (workInProgress.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
+    (workInProgress.__reactInternalMemoizedMaskedChildContext = context));
+  return ctor;
+}
 function callComponentWillReceiveProps(
   workInProgress,
   instance,
   newProps,
-  nextLegacyContext
+  nextContext
 ) {
   workInProgress = instance.state;
   "function" === typeof instance.componentWillReceiveProps &&
-    instance.componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.componentWillReceiveProps(newProps, nextContext);
   "function" === typeof instance.UNSAFE_componentWillReceiveProps &&
-    instance.UNSAFE_componentWillReceiveProps(newProps, nextLegacyContext);
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
   instance.state !== workInProgress &&
     classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
 }
@@ -2494,32 +2583,32 @@ function mountClassInstance(
   newProps,
   renderExpirationTime
 ) {
-  var instance = workInProgress.stateNode,
-    unmaskedContext = isContextProvider(ctor)
-      ? previousContext
-      : contextStackCursor.current;
+  var instance = workInProgress.stateNode;
   instance.props = newProps;
   instance.state = workInProgress.memoizedState;
   instance.refs = emptyRefsObject;
-  instance.context = getMaskedContext(workInProgress, unmaskedContext);
-  unmaskedContext = workInProgress.updateQueue;
-  null !== unmaskedContext &&
+  var contextType = ctor.contextType;
+  "object" === typeof contextType && null !== contextType
+    ? (instance.context = ReactCurrentOwner$4.currentDispatcher.readContext(
+        contextType
+      ))
+    : ((contextType = isContextProvider(ctor)
+        ? previousContext
+        : contextStackCursor.current),
+      (instance.context = getMaskedContext(workInProgress, contextType)));
+  contextType = workInProgress.updateQueue;
+  null !== contextType &&
     (processUpdateQueue(
       workInProgress,
-      unmaskedContext,
+      contextType,
       newProps,
       instance,
       renderExpirationTime
     ),
     (instance.state = workInProgress.memoizedState));
-  unmaskedContext = ctor.getDerivedStateFromProps;
-  "function" === typeof unmaskedContext &&
-    (applyDerivedStateFromProps(
-      workInProgress,
-      ctor,
-      unmaskedContext,
-      newProps
-    ),
+  contextType = ctor.getDerivedStateFromProps;
+  "function" === typeof contextType &&
+    (applyDerivedStateFromProps(workInProgress, ctor, contextType, newProps),
     (instance.state = workInProgress.memoizedState));
   "function" === typeof ctor.getDerivedStateFromProps ||
     "function" === typeof instance.getSnapshotBeforeUpdate ||
@@ -2532,11 +2621,11 @@ function mountClassInstance(
       instance.UNSAFE_componentWillMount(),
     ctor !== instance.state &&
       classComponentUpdater.enqueueReplaceState(instance, instance.state, null),
-    (unmaskedContext = workInProgress.updateQueue),
-    null !== unmaskedContext &&
+    (contextType = workInProgress.updateQueue),
+    null !== contextType &&
       (processUpdateQueue(
         workInProgress,
-        unmaskedContext,
+        contextType,
         newProps,
         instance,
         renderExpirationTime
@@ -2545,7 +2634,7 @@ function mountClassInstance(
   "function" === typeof instance.componentDidMount &&
     (workInProgress.effectTag |= 4);
 }
-var isArray$1 = Array.isArray;
+var isArray = Array.isArray;
 function coerceRef(returnFiber, current$$1, element) {
   returnFiber = element.ref;
   if (
@@ -2557,10 +2646,7 @@ function coerceRef(returnFiber, current$$1, element) {
       element = element._owner;
       var inst = void 0;
       element &&
-        (invariant(
-          2 === element.tag || 3 === element.tag,
-          "Stateless function components cannot have refs."
-        ),
+        (invariant(1 === element.tag, "Function components cannot have refs."),
         (inst = element.stateNode));
       invariant(
         inst,
@@ -2589,7 +2675,7 @@ function coerceRef(returnFiber, current$$1, element) {
     );
     invariant(
       element._owner,
-      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a functional component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
+      "Element ref was specified as a string (%s) but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information.",
       returnFiber
     );
   }
@@ -2665,7 +2751,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     textContent,
     expirationTime
   ) {
-    if (null === current$$1 || 8 !== current$$1.tag)
+    if (null === current$$1 || 6 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromText(
           textContent,
@@ -2680,15 +2766,18 @@ function ChildReconciler(shouldTrackSideEffects) {
     return current$$1;
   }
   function updateElement(returnFiber, current$$1, element, expirationTime) {
-    if (null !== current$$1 && current$$1.type === element.type)
+    if (null !== current$$1 && current$$1.elementType === element.type)
       return (
         (expirationTime = useFiber(current$$1, element.props, expirationTime)),
         (expirationTime.ref = coerceRef(returnFiber, current$$1, element)),
         (expirationTime.return = returnFiber),
         expirationTime
       );
-    expirationTime = createFiberFromElement(
-      element,
+    expirationTime = createFiberFromTypeAndProps(
+      element.type,
+      element.key,
+      element.props,
+      null,
       returnFiber.mode,
       expirationTime
     );
@@ -2699,7 +2788,7 @@ function ChildReconciler(shouldTrackSideEffects) {
   function updatePortal(returnFiber, current$$1, portal, expirationTime) {
     if (
       null === current$$1 ||
-      6 !== current$$1.tag ||
+      4 !== current$$1.tag ||
       current$$1.stateNode.containerInfo !== portal.containerInfo ||
       current$$1.stateNode.implementation !== portal.implementation
     )
@@ -2723,7 +2812,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     expirationTime,
     key
   ) {
-    if (null === current$$1 || 9 !== current$$1.tag)
+    if (null === current$$1 || 7 !== current$$1.tag)
       return (
         (current$$1 = createFiberFromFragment(
           fragment,
@@ -2753,8 +2842,11 @@ function ChildReconciler(shouldTrackSideEffects) {
       switch (newChild.$$typeof) {
         case REACT_ELEMENT_TYPE:
           return (
-            (expirationTime = createFiberFromElement(
-              newChild,
+            (expirationTime = createFiberFromTypeAndProps(
+              newChild.type,
+              newChild.key,
+              newChild.props,
+              null,
               returnFiber.mode,
               expirationTime
             )),
@@ -2773,7 +2865,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             newChild
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (newChild = createFiberFromFragment(
             newChild,
@@ -2813,7 +2905,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ? updatePortal(returnFiber, oldFiber, newChild, expirationTime)
             : null;
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return null !== key
           ? null
           : updateFragment(
@@ -2881,7 +2973,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             )
           );
       }
-      if (isArray$1(newChild) || getIteratorFn(newChild))
+      if (isArray(newChild) || getIteratorFn(newChild))
         return (
           (existingChildren = existingChildren.get(newIdx) || null),
           updateFragment(
@@ -3098,9 +3190,9 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (isUnkeyedTopLevelFragment.key === isObject)
                 if (
-                  9 === isUnkeyedTopLevelFragment.tag
+                  7 === isUnkeyedTopLevelFragment.tag
                     ? newChild.type === REACT_FRAGMENT_TYPE
-                    : isUnkeyedTopLevelFragment.type === newChild.type
+                    : isUnkeyedTopLevelFragment.elementType === newChild.type
                 ) {
                   deleteRemainingChildren(
                     returnFiber,
@@ -3140,8 +3232,11 @@ function ChildReconciler(shouldTrackSideEffects) {
                 )),
                 (currentFirstChild.return = returnFiber),
                 (returnFiber = currentFirstChild))
-              : ((expirationTime = createFiberFromElement(
-                  newChild,
+              : ((expirationTime = createFiberFromTypeAndProps(
+                  newChild.type,
+                  newChild.key,
+                  newChild.props,
+                  null,
                   returnFiber.mode,
                   expirationTime
                 )),
@@ -3163,7 +3258,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             ) {
               if (currentFirstChild.key === isUnkeyedTopLevelFragment)
                 if (
-                  6 === currentFirstChild.tag &&
+                  4 === currentFirstChild.tag &&
                   currentFirstChild.stateNode.containerInfo ===
                     newChild.containerInfo &&
                   currentFirstChild.stateNode.implementation ===
@@ -3201,7 +3296,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     if ("string" === typeof newChild || "number" === typeof newChild)
       return (
         (newChild = "" + newChild),
-        null !== currentFirstChild && 8 === currentFirstChild.tag
+        null !== currentFirstChild && 6 === currentFirstChild.tag
           ? (deleteRemainingChildren(returnFiber, currentFirstChild.sibling),
             (currentFirstChild = useFiber(
               currentFirstChild,
@@ -3220,7 +3315,7 @@ function ChildReconciler(shouldTrackSideEffects) {
             (returnFiber = currentFirstChild)),
         placeSingleChild(returnFiber)
       );
-    if (isArray$1(newChild))
+    if (isArray(newChild))
       return reconcileChildrenArray(
         returnFiber,
         currentFirstChild,
@@ -3237,8 +3332,7 @@ function ChildReconciler(shouldTrackSideEffects) {
     isObject && throwOnInvalidObjectType(returnFiber, newChild);
     if ("undefined" === typeof newChild && !isUnkeyedTopLevelFragment)
       switch (returnFiber.tag) {
-        case 2:
-        case 3:
+        case 1:
         case 0:
           (expirationTime = returnFiber.type),
             invariant(
@@ -3257,12 +3351,12 @@ var reconcileChildFibers = ChildReconciler(!0),
   isHydrating = !1;
 function tryHydrate(fiber, nextInstance) {
   switch (fiber.tag) {
-    case 7:
+    case 5:
       return (
         (nextInstance = shim$1(nextInstance, fiber.type, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
       );
-    case 8:
+    case 6:
       return (
         (nextInstance = shim$1(nextInstance, fiber.pendingProps)),
         null !== nextInstance ? ((fiber.stateNode = nextInstance), !0) : !1
@@ -3285,7 +3379,8 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
           return;
         }
         var returnFiber = hydrationParentFiber,
-          fiber = new FiberNode(7, null, null, 0);
+          fiber = createFiber(5, null, null, 0);
+        fiber.elementType = "DELETED";
         fiber.type = "DELETED";
         fiber.stateNode = firstAttemptedInstance;
         fiber.return = returnFiber;
@@ -3303,38 +3398,6 @@ function tryToClaimNextHydratableInstance(fiber$jscomp$0) {
         (hydrationParentFiber = fiber$jscomp$0);
   }
 }
-function readLazyComponentType(thenable) {
-  switch (thenable._reactStatus) {
-    case 1:
-      return thenable._reactResult;
-    case 2:
-      throw thenable._reactResult;
-    case 0:
-      throw thenable;
-    default:
-      throw ((thenable._reactStatus = 0),
-      thenable.then(
-        function(resolvedValue) {
-          if (0 === thenable._reactStatus) {
-            thenable._reactStatus = 1;
-            if ("object" === typeof resolvedValue && null !== resolvedValue) {
-              var defaultExport = resolvedValue.default;
-              resolvedValue =
-                void 0 !== defaultExport && null !== defaultExport
-                  ? defaultExport
-                  : resolvedValue;
-            }
-            thenable._reactResult = resolvedValue;
-          }
-        },
-        function(error) {
-          0 === thenable._reactStatus &&
-            ((thenable._reactStatus = 2), (thenable._reactResult = error));
-        }
-      ),
-      thenable);
-  }
-}
 var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
 function reconcileChildren(
   current$$1,
@@ -3360,26 +3423,108 @@ function reconcileChildren(
 function updateForwardRef(
   current$$1,
   workInProgress,
-  type,
+  Component,
   nextProps,
   renderExpirationTime
 ) {
-  type = type.render;
+  Component = Component.render;
   var ref = workInProgress.ref;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  nextProps = Component(nextProps, ref);
+  workInProgress.effectTag |= 1;
+  reconcileChildren(
+    current$$1,
+    workInProgress,
+    nextProps,
+    renderExpirationTime
+  );
+  return workInProgress.child;
+}
+function updateMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  if (null === current$$1) {
+    var type = Component.type;
+    if (
+      "function" === typeof type &&
+      !shouldConstruct(type) &&
+      void 0 === type.defaultProps &&
+      null === Component.compare &&
+      void 0 === Component.defaultProps
+    )
+      return (
+        (workInProgress.tag = 15),
+        (workInProgress.type = type),
+        updateSimpleMemoComponent(
+          current$$1,
+          workInProgress,
+          type,
+          nextProps,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    current$$1 = createFiberFromTypeAndProps(
+      Component.type,
+      null,
+      nextProps,
+      null,
+      workInProgress.mode,
+      renderExpirationTime
+    );
+    current$$1.ref = workInProgress.ref;
+    current$$1.return = workInProgress;
+    return (workInProgress.child = current$$1);
+  }
+  type = current$$1.child;
   if (
-    !didPerformWorkStackCursor.current &&
-    workInProgress.memoizedProps === nextProps &&
-    ref === (null !== current$$1 ? current$$1.ref : null)
+    updateExpirationTime < renderExpirationTime &&
+    ((updateExpirationTime = type.memoizedProps),
+    (Component = Component.compare),
+    (Component = null !== Component ? Component : shallowEqual),
+    Component(updateExpirationTime, nextProps) &&
+      current$$1.ref === workInProgress.ref)
   )
     return bailoutOnAlreadyFinishedWork(
       current$$1,
       workInProgress,
       renderExpirationTime
     );
-  type = type(nextProps, ref);
-  reconcileChildren(current$$1, workInProgress, type, renderExpirationTime);
-  workInProgress.memoizedProps = nextProps;
-  return workInProgress.child;
+  workInProgress.effectTag |= 1;
+  current$$1 = createWorkInProgress(type, nextProps, renderExpirationTime);
+  current$$1.ref = workInProgress.ref;
+  current$$1.return = workInProgress;
+  return (workInProgress.child = current$$1);
+}
+function updateSimpleMemoComponent(
+  current$$1,
+  workInProgress,
+  Component,
+  nextProps,
+  updateExpirationTime,
+  renderExpirationTime
+) {
+  return null !== current$$1 &&
+    updateExpirationTime < renderExpirationTime &&
+    shallowEqual(current$$1.memoizedProps, nextProps) &&
+    current$$1.ref === workInProgress.ref
+    ? bailoutOnAlreadyFinishedWork(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      )
+    : updateFunctionComponent(
+        current$$1,
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      );
 }
 function markRef(current$$1, workInProgress) {
   var ref = workInProgress.ref;
@@ -3389,7 +3534,7 @@ function markRef(current$$1, workInProgress) {
   )
     workInProgress.effectTag |= 128;
 }
-function updateFunctionalComponent(
+function updateFunctionComponent(
   current$$1,
   workInProgress,
   Component,
@@ -3409,7 +3554,6 @@ function updateFunctionalComponent(
     Component,
     renderExpirationTime
   );
-  workInProgress.memoizedProps = nextProps;
   return workInProgress.child;
 }
 function updateClassComponent(
@@ -3424,154 +3568,152 @@ function updateClassComponent(
     pushContextProvider(workInProgress);
   } else hasContext = !1;
   prepareToReadContext(workInProgress, renderExpirationTime);
-  if (null === current$$1)
-    if (null === workInProgress.stateNode) {
-      var unmaskedContext = isContextProvider(Component)
-          ? previousContext
-          : contextStackCursor.current,
-        contextTypes = Component.contextTypes,
-        isContextConsumer = null !== contextTypes && void 0 !== contextTypes;
-      contextTypes = isContextConsumer
-        ? getMaskedContext(workInProgress, unmaskedContext)
-        : emptyContextObject;
-      var instance = new Component(nextProps, contextTypes);
-      workInProgress.memoizedState =
-        null !== instance.state && void 0 !== instance.state
-          ? instance.state
-          : null;
-      instance.updater = classComponentUpdater;
-      workInProgress.stateNode = instance;
-      instance._reactInternalFiber = workInProgress;
-      isContextConsumer &&
-        ((isContextConsumer = workInProgress.stateNode),
-        (isContextConsumer.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext),
-        (isContextConsumer.__reactInternalMemoizedMaskedChildContext = contextTypes));
+  if (null === workInProgress.stateNode)
+    null !== current$$1 &&
+      ((current$$1.alternate = null),
+      (workInProgress.alternate = null),
+      (workInProgress.effectTag |= 2)),
+      constructClassInstance(
+        workInProgress,
+        Component,
+        nextProps,
+        renderExpirationTime
+      ),
       mountClassInstance(
         workInProgress,
         Component,
         nextProps,
         renderExpirationTime
-      );
-      nextProps = !0;
-    } else {
-      unmaskedContext = workInProgress.stateNode;
-      contextTypes = workInProgress.memoizedProps;
-      unmaskedContext.props = contextTypes;
-      var oldContext = unmaskedContext.context;
-      isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current;
-      isContextConsumer = getMaskedContext(workInProgress, isContextConsumer);
-      var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-      (instance =
+      ),
+      (nextProps = !0);
+  else if (null === current$$1) {
+    var instance = workInProgress.stateNode,
+      oldProps = workInProgress.memoizedProps;
+    instance.props = oldProps;
+    var oldContext = instance.context,
+      contextType = Component.contextType;
+    "object" === typeof contextType && null !== contextType
+      ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+          contextType
+        ))
+      : ((contextType = isContextProvider(Component)
+          ? previousContext
+          : contextStackCursor.current),
+        (contextType = getMaskedContext(workInProgress, contextType)));
+    var getDerivedStateFromProps = Component.getDerivedStateFromProps,
+      hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
-          callComponentWillReceiveProps(
-            workInProgress,
-            unmaskedContext,
-            nextProps,
-            isContextConsumer
-          ));
-      hasForceUpdate = !1;
-      var oldState = workInProgress.memoizedState;
-      oldContext = unmaskedContext.state = oldState;
-      var updateQueue = workInProgress.updateQueue;
-      null !== updateQueue &&
-        (processUpdateQueue(
+        "function" === typeof instance.getSnapshotBeforeUpdate;
+    hasNewLifecycles ||
+      ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+        "function" !== typeof instance.componentWillReceiveProps) ||
+      ((oldProps !== nextProps || oldContext !== contextType) &&
+        callComponentWillReceiveProps(
           workInProgress,
-          updateQueue,
+          instance,
           nextProps,
-          unmaskedContext,
-          renderExpirationTime
-        ),
-        (oldContext = workInProgress.memoizedState));
-      contextTypes !== nextProps ||
-      oldState !== oldContext ||
-      didPerformWorkStackCursor.current ||
-      hasForceUpdate
-        ? ("function" === typeof getDerivedStateFromProps &&
-            (applyDerivedStateFromProps(
-              workInProgress,
-              Component,
-              getDerivedStateFromProps,
-              nextProps
-            ),
-            (oldContext = workInProgress.memoizedState)),
-          (contextTypes =
-            hasForceUpdate ||
-            checkShouldComponentUpdate(
-              workInProgress,
-              Component,
-              contextTypes,
-              nextProps,
-              oldState,
-              oldContext,
-              isContextConsumer
-            ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  "function" !== typeof unmaskedContext.componentWillMount) ||
-                ("function" === typeof unmaskedContext.componentWillMount &&
-                  unmaskedContext.componentWillMount(),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillMount &&
-                  unmaskedContext.UNSAFE_componentWillMount()),
-              "function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4))
-            : ("function" === typeof unmaskedContext.componentDidMount &&
-                (workInProgress.effectTag |= 4),
-              (workInProgress.memoizedProps = nextProps),
-              (workInProgress.memoizedState = oldContext)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldContext),
-          (unmaskedContext.context = isContextConsumer),
-          (nextProps = contextTypes))
-        : ("function" === typeof unmaskedContext.componentDidMount &&
-            (workInProgress.effectTag |= 4),
-          (nextProps = !1));
-    }
-  else
-    (unmaskedContext = workInProgress.stateNode),
-      (contextTypes = workInProgress.memoizedProps),
-      (unmaskedContext.props = contextTypes),
-      (oldContext = unmaskedContext.context),
-      (isContextConsumer = isContextProvider(Component)
-        ? previousContext
-        : contextStackCursor.current),
-      (isContextConsumer = getMaskedContext(workInProgress, isContextConsumer)),
+          contextType
+        ));
+    hasForceUpdate = !1;
+    var oldState = workInProgress.memoizedState;
+    oldContext = instance.state = oldState;
+    var updateQueue = workInProgress.updateQueue;
+    null !== updateQueue &&
+      (processUpdateQueue(
+        workInProgress,
+        updateQueue,
+        nextProps,
+        instance,
+        renderExpirationTime
+      ),
+      (oldContext = workInProgress.memoizedState));
+    oldProps !== nextProps ||
+    oldState !== oldContext ||
+    didPerformWorkStackCursor.current ||
+    hasForceUpdate
+      ? ("function" === typeof getDerivedStateFromProps &&
+          (applyDerivedStateFromProps(
+            workInProgress,
+            Component,
+            getDerivedStateFromProps,
+            nextProps
+          ),
+          (oldContext = workInProgress.memoizedState)),
+        (oldProps =
+          hasForceUpdate ||
+          checkShouldComponentUpdate(
+            workInProgress,
+            Component,
+            oldProps,
+            nextProps,
+            oldState,
+            oldContext,
+            contextType
+          ))
+          ? (hasNewLifecycles ||
+              ("function" !== typeof instance.UNSAFE_componentWillMount &&
+                "function" !== typeof instance.componentWillMount) ||
+              ("function" === typeof instance.componentWillMount &&
+                instance.componentWillMount(),
+              "function" === typeof instance.UNSAFE_componentWillMount &&
+                instance.UNSAFE_componentWillMount()),
+            "function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4))
+          : ("function" === typeof instance.componentDidMount &&
+              (workInProgress.effectTag |= 4),
+            (workInProgress.memoizedProps = nextProps),
+            (workInProgress.memoizedState = oldContext)),
+        (instance.props = nextProps),
+        (instance.state = oldContext),
+        (instance.context = contextType),
+        (nextProps = oldProps))
+      : ("function" === typeof instance.componentDidMount &&
+          (workInProgress.effectTag |= 4),
+        (nextProps = !1));
+  } else
+    (instance = workInProgress.stateNode),
+      (oldProps = workInProgress.memoizedProps),
+      (instance.props =
+        workInProgress.type === workInProgress.elementType
+          ? oldProps
+          : resolveDefaultProps(workInProgress.type, oldProps)),
+      (oldContext = instance.context),
+      (contextType = Component.contextType),
+      "object" === typeof contextType && null !== contextType
+        ? (contextType = ReactCurrentOwner$4.currentDispatcher.readContext(
+            contextType
+          ))
+        : ((contextType = isContextProvider(Component)
+            ? previousContext
+            : contextStackCursor.current),
+          (contextType = getMaskedContext(workInProgress, contextType))),
       (getDerivedStateFromProps = Component.getDerivedStateFromProps),
-      (instance =
+      (hasNewLifecycles =
         "function" === typeof getDerivedStateFromProps ||
-        "function" === typeof unmaskedContext.getSnapshotBeforeUpdate) ||
-        ("function" !==
-          typeof unmaskedContext.UNSAFE_componentWillReceiveProps &&
-          "function" !== typeof unmaskedContext.componentWillReceiveProps) ||
-        ((contextTypes !== nextProps || oldContext !== isContextConsumer) &&
+        "function" === typeof instance.getSnapshotBeforeUpdate) ||
+        ("function" !== typeof instance.UNSAFE_componentWillReceiveProps &&
+          "function" !== typeof instance.componentWillReceiveProps) ||
+        ((oldProps !== nextProps || oldContext !== contextType) &&
           callComponentWillReceiveProps(
             workInProgress,
-            unmaskedContext,
+            instance,
             nextProps,
-            isContextConsumer
+            contextType
           )),
       (hasForceUpdate = !1),
       (oldContext = workInProgress.memoizedState),
-      (oldState = unmaskedContext.state = oldContext),
+      (oldState = instance.state = oldContext),
       (updateQueue = workInProgress.updateQueue),
       null !== updateQueue &&
         (processUpdateQueue(
           workInProgress,
           updateQueue,
           nextProps,
-          unmaskedContext,
+          instance,
           renderExpirationTime
         ),
         (oldState = workInProgress.memoizedState)),
-      contextTypes !== nextProps ||
+      oldProps !== nextProps ||
       oldContext !== oldState ||
       didPerformWorkStackCursor.current ||
       hasForceUpdate
@@ -3588,53 +3730,51 @@ function updateClassComponent(
             checkShouldComponentUpdate(
               workInProgress,
               Component,
-              contextTypes,
+              oldProps,
               nextProps,
               oldContext,
               oldState,
-              isContextConsumer
+              contextType
             ))
-            ? (instance ||
-                ("function" !==
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  "function" !== typeof unmaskedContext.componentWillUpdate) ||
-                ("function" === typeof unmaskedContext.componentWillUpdate &&
-                  unmaskedContext.componentWillUpdate(
+            ? (hasNewLifecycles ||
+                ("function" !== typeof instance.UNSAFE_componentWillUpdate &&
+                  "function" !== typeof instance.componentWillUpdate) ||
+                ("function" === typeof instance.componentWillUpdate &&
+                  instance.componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   ),
-                "function" ===
-                  typeof unmaskedContext.UNSAFE_componentWillUpdate &&
-                  unmaskedContext.UNSAFE_componentWillUpdate(
+                "function" === typeof instance.UNSAFE_componentWillUpdate &&
+                  instance.UNSAFE_componentWillUpdate(
                     nextProps,
                     oldState,
-                    isContextConsumer
+                    contextType
                   )),
-              "function" === typeof unmaskedContext.componentDidUpdate &&
+              "function" === typeof instance.componentDidUpdate &&
                 (workInProgress.effectTag |= 4),
-              "function" === typeof unmaskedContext.getSnapshotBeforeUpdate &&
+              "function" === typeof instance.getSnapshotBeforeUpdate &&
                 (workInProgress.effectTag |= 256))
-            : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+            : ("function" !== typeof instance.componentDidUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 4),
-              "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-                (contextTypes === current$$1.memoizedProps &&
+              "function" !== typeof instance.getSnapshotBeforeUpdate ||
+                (oldProps === current$$1.memoizedProps &&
                   oldContext === current$$1.memoizedState) ||
                 (workInProgress.effectTag |= 256),
               (workInProgress.memoizedProps = nextProps),
               (workInProgress.memoizedState = oldState)),
-          (unmaskedContext.props = nextProps),
-          (unmaskedContext.state = oldState),
-          (unmaskedContext.context = isContextConsumer),
+          (instance.props = nextProps),
+          (instance.state = oldState),
+          (instance.context = contextType),
           (nextProps = getDerivedStateFromProps))
-        : ("function" !== typeof unmaskedContext.componentDidUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+        : ("function" !== typeof instance.componentDidUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 4),
-          "function" !== typeof unmaskedContext.getSnapshotBeforeUpdate ||
-            (contextTypes === current$$1.memoizedProps &&
+          "function" !== typeof instance.getSnapshotBeforeUpdate ||
+            (oldProps === current$$1.memoizedProps &&
               oldContext === current$$1.memoizedState) ||
             (workInProgress.effectTag |= 256),
           (nextProps = !1));
@@ -3668,23 +3808,35 @@ function finishClassComponent(
     );
   shouldUpdate = workInProgress.stateNode;
   ReactCurrentOwner$3.current = workInProgress;
-  if (didCaptureError) {
+  if (
+    didCaptureError &&
+    "function" !== typeof Component.getDerivedStateFromError
+  ) {
     var nextChildren = null;
     profilerStartTime = -1;
   } else nextChildren = shouldUpdate.render();
   workInProgress.effectTag |= 1;
-  null !== current$$1 &&
-    didCaptureError &&
-    (reconcileChildren(current$$1, workInProgress, null, renderExpirationTime),
-    (workInProgress.child = null));
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    nextChildren,
-    renderExpirationTime
-  );
+  null !== current$$1 && didCaptureError
+    ? ((didCaptureError = nextChildren),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        current$$1.child,
+        null,
+        renderExpirationTime
+      )),
+      (workInProgress.child = reconcileChildFibers(
+        workInProgress,
+        null,
+        didCaptureError,
+        renderExpirationTime
+      )))
+    : reconcileChildren(
+        current$$1,
+        workInProgress,
+        nextChildren,
+        renderExpirationTime
+      );
   workInProgress.memoizedState = shouldUpdate.state;
-  workInProgress.memoizedProps = shouldUpdate.props;
   hasContext && invalidateContextProvider(workInProgress, Component, !0);
   return workInProgress.child;
 }
@@ -3700,131 +3852,123 @@ function pushHostRootContext(workInProgress) {
       pushTopLevelContextObject(workInProgress, root.context, !1);
   pushHostContainer(workInProgress, root.containerInfo);
 }
-function resolveDefaultProps(Component, baseProps) {
-  if (Component && Component.defaultProps) {
-    baseProps = Object.assign({}, baseProps);
-    Component = Component.defaultProps;
-    for (var propName in Component)
-      void 0 === baseProps[propName] &&
-        (baseProps[propName] = Component[propName]);
-  }
-  return baseProps;
-}
-function mountIndeterminateComponent(
+function updateSuspenseComponent(
   current$$1,
   workInProgress,
-  Component,
   renderExpirationTime
 ) {
-  invariant(
-    null === current$$1,
-    "An indeterminate component should never have mounted. This error is likely caused by a bug in React. Please file an issue."
-  );
-  var props = workInProgress.pendingProps;
-  if (
-    "object" === typeof Component &&
-    null !== Component &&
-    "function" === typeof Component.then
-  ) {
-    Component = readLazyComponentType(Component);
-    var JSCompiler_inline_result = Component;
-    JSCompiler_inline_result =
-      "function" === typeof JSCompiler_inline_result
-        ? shouldConstruct(JSCompiler_inline_result)
-          ? 3
-          : 1
-        : void 0 !== JSCompiler_inline_result &&
-          null !== JSCompiler_inline_result &&
-          JSCompiler_inline_result.$$typeof
-          ? 14
-          : 4;
-    JSCompiler_inline_result = workInProgress.tag = JSCompiler_inline_result;
-    var resolvedProps = resolveDefaultProps(Component, props);
-    switch (JSCompiler_inline_result) {
-      case 1:
-        return updateFunctionalComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 3:
-        return updateClassComponent(
-          current$$1,
-          workInProgress,
-          Component,
-          resolvedProps,
-          renderExpirationTime
-        );
-      case 14:
-        return updateForwardRef(
-          current$$1,
+  var mode = workInProgress.mode,
+    nextProps = workInProgress.pendingProps,
+    nextState = workInProgress.memoizedState;
+  if (0 === (workInProgress.effectTag & 64)) {
+    nextState = null;
+    var nextDidTimeout = !1;
+  } else
+    (nextState = { timedOutAt: null !== nextState ? nextState.timedOutAt : 0 }),
+      (nextDidTimeout = !0),
+      (workInProgress.effectTag &= -65);
+  if (null === current$$1)
+    nextDidTimeout
+      ? ((nextDidTimeout = nextProps.fallback),
+        (nextProps = createFiberFromFragment(null, mode, 0, null)),
+        0 === (workInProgress.mode & 1) &&
+          (nextProps.child =
+            null !== workInProgress.memoizedState
+              ? workInProgress.child.child
+              : workInProgress.child),
+        (renderExpirationTime = createFiberFromFragment(
+          nextDidTimeout,
+          mode,
+          renderExpirationTime,
+          null
+        )),
+        (nextProps.sibling = renderExpirationTime),
+        (mode = nextProps),
+        (mode.return = renderExpirationTime.return = workInProgress))
+      : (mode = renderExpirationTime = mountChildFibers(
           workInProgress,
-          Component,
-          resolvedProps,
+          null,
+          nextProps.children,
           renderExpirationTime
-        );
-      default:
-        invariant(
-          !1,
-          "Element type is invalid. Received a promise that resolves to: %s. Promise elements must resolve to a class or function.",
-          Component
-        );
-    }
-  }
-  JSCompiler_inline_result = getMaskedContext(
-    workInProgress,
-    contextStackCursor.current
-  );
-  prepareToReadContext(workInProgress, renderExpirationTime);
-  JSCompiler_inline_result = Component(props, JSCompiler_inline_result);
-  workInProgress.effectTag |= 1;
-  if (
-    "object" === typeof JSCompiler_inline_result &&
-    null !== JSCompiler_inline_result &&
-    "function" === typeof JSCompiler_inline_result.render &&
-    void 0 === JSCompiler_inline_result.$$typeof
-  ) {
-    workInProgress.tag = 2;
-    isContextProvider(Component)
-      ? ((resolvedProps = !0), pushContextProvider(workInProgress))
-      : (resolvedProps = !1);
-    workInProgress.memoizedState =
-      null !== JSCompiler_inline_result.state &&
-      void 0 !== JSCompiler_inline_result.state
-        ? JSCompiler_inline_result.state
-        : null;
-    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
-    "function" === typeof getDerivedStateFromProps &&
-      applyDerivedStateFromProps(
+        ));
+  else if (null !== current$$1.memoizedState)
+    if (
+      ((current$$1 = current$$1.child),
+      (mode = current$$1.sibling),
+      nextDidTimeout)
+    ) {
+      nextProps = nextProps.fallback;
+      renderExpirationTime = createWorkInProgress(
+        current$$1,
+        current$$1.pendingProps,
+        0
+      );
+      0 === (workInProgress.mode & 1) &&
+        ((nextDidTimeout =
+          null !== workInProgress.memoizedState
+            ? workInProgress.child.child
+            : workInProgress.child),
+        nextDidTimeout !== current$$1.child &&
+          (renderExpirationTime.child = nextDidTimeout));
+      if (workInProgress.mode & 4) {
+        nextDidTimeout = 0;
+        for (current$$1 = renderExpirationTime.child; null !== current$$1; )
+          (nextDidTimeout += current$$1.treeBaseDuration),
+            (current$$1 = current$$1.sibling);
+        renderExpirationTime.treeBaseDuration = nextDidTimeout;
+      }
+      nextProps = renderExpirationTime.sibling = createWorkInProgress(
+        mode,
+        nextProps,
+        mode.expirationTime
+      );
+      mode = renderExpirationTime;
+      renderExpirationTime.childExpirationTime = 0;
+      renderExpirationTime = nextProps;
+      mode.return = renderExpirationTime.return = workInProgress;
+    } else
+      mode = renderExpirationTime = reconcileChildFibers(
         workInProgress,
-        Component,
-        getDerivedStateFromProps,
-        props
+        current$$1.child,
+        nextProps.children,
+        renderExpirationTime
       );
-    JSCompiler_inline_result.updater = classComponentUpdater;
-    workInProgress.stateNode = JSCompiler_inline_result;
-    JSCompiler_inline_result._reactInternalFiber = workInProgress;
-    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
-    return finishClassComponent(
-      current$$1,
+  else if (((current$$1 = current$$1.child), nextDidTimeout)) {
+    nextDidTimeout = nextProps.fallback;
+    nextProps = createFiberFromFragment(null, mode, 0, null);
+    nextProps.child = current$$1;
+    0 === (workInProgress.mode & 1) &&
+      (nextProps.child =
+        null !== workInProgress.memoizedState
+          ? workInProgress.child.child
+          : workInProgress.child);
+    if (workInProgress.mode & 4) {
+      current$$1 = 0;
+      for (var _hiddenChild = nextProps.child; null !== _hiddenChild; )
+        (current$$1 += _hiddenChild.treeBaseDuration),
+          (_hiddenChild = _hiddenChild.sibling);
+      nextProps.treeBaseDuration = current$$1;
+    }
+    renderExpirationTime = nextProps.sibling = createFiberFromFragment(
+      nextDidTimeout,
+      mode,
+      renderExpirationTime,
+      null
+    );
+    renderExpirationTime.effectTag |= 2;
+    mode = nextProps;
+    nextProps.childExpirationTime = 0;
+    mode.return = renderExpirationTime.return = workInProgress;
+  } else
+    renderExpirationTime = mode = reconcileChildFibers(
       workInProgress,
-      Component,
-      !0,
-      resolvedProps,
+      current$$1,
+      nextProps.children,
       renderExpirationTime
     );
-  }
-  workInProgress.tag = 0;
-  reconcileChildren(
-    current$$1,
-    workInProgress,
-    JSCompiler_inline_result,
-    renderExpirationTime
-  );
-  workInProgress.memoizedProps = props;
-  return workInProgress.child;
+  workInProgress.memoizedState = nextState;
+  workInProgress.child = mode;
+  return renderExpirationTime;
 }
 function bailoutOnAlreadyFinishedWork(
   current$$1,
@@ -3834,9 +3978,7 @@ function bailoutOnAlreadyFinishedWork(
   null !== current$$1 &&
     (workInProgress.firstContextDependency = current$$1.firstContextDependency);
   profilerStartTime = -1;
-  var childExpirationTime = workInProgress.childExpirationTime;
-  if (0 === childExpirationTime || childExpirationTime > renderExpirationTime)
-    return null;
+  if (workInProgress.childExpirationTime < renderExpirationTime) return null;
   invariant(
     null === current$$1 || workInProgress.child === current$$1.child,
     "Resuming work not yet implemented."
@@ -3868,35 +4010,53 @@ function bailoutOnAlreadyFinishedWork(
 function beginWork(current$$1, workInProgress, renderExpirationTime) {
   var updateExpirationTime = workInProgress.expirationTime;
   if (
+    null !== current$$1 &&
+    current$$1.memoizedProps === workInProgress.pendingProps &&
     !didPerformWorkStackCursor.current &&
-    (0 === updateExpirationTime || updateExpirationTime > renderExpirationTime)
+    updateExpirationTime < renderExpirationTime
   ) {
     switch (workInProgress.tag) {
-      case 5:
+      case 3:
         pushHostRootContext(workInProgress);
         break;
-      case 7:
+      case 5:
         pushHostContext(workInProgress);
         break;
-      case 2:
+      case 1:
         isContextProvider(workInProgress.type) &&
           pushContextProvider(workInProgress);
         break;
-      case 3:
-        isContextProvider(workInProgress.type._reactResult) &&
-          pushContextProvider(workInProgress);
-        break;
-      case 6:
+      case 4:
         pushHostContainer(
           workInProgress,
           workInProgress.stateNode.containerInfo
         );
         break;
-      case 12:
+      case 10:
         pushProvider(workInProgress, workInProgress.memoizedProps.value);
         break;
-      case 15:
+      case 12:
         workInProgress.effectTag |= 4;
+        break;
+      case 13:
+        if (null !== workInProgress.memoizedState) {
+          updateExpirationTime = workInProgress.child.childExpirationTime;
+          if (
+            0 !== updateExpirationTime &&
+            updateExpirationTime >= renderExpirationTime
+          )
+            return updateSuspenseComponent(
+              current$$1,
+              workInProgress,
+              renderExpirationTime
+            );
+          workInProgress = bailoutOnAlreadyFinishedWork(
+            current$$1,
+            workInProgress,
+            renderExpirationTime
+          );
+          return null !== workInProgress ? workInProgress.sibling : null;
+        }
     }
     return bailoutOnAlreadyFinishedWork(
       current$$1,
@@ -3906,56 +4066,163 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
   }
   workInProgress.expirationTime = 0;
   switch (workInProgress.tag) {
-    case 4:
-      return mountIndeterminateComponent(
-        current$$1,
+    case 2:
+      updateExpirationTime = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      current$$1 = workInProgress.pendingProps;
+      var context = getMaskedContext(
         workInProgress,
-        workInProgress.type,
-        renderExpirationTime
+        contextStackCursor.current
       );
+      prepareToReadContext(workInProgress, renderExpirationTime);
+      context = updateExpirationTime(current$$1, context);
+      workInProgress.effectTag |= 1;
+      if (
+        "object" === typeof context &&
+        null !== context &&
+        "function" === typeof context.render &&
+        void 0 === context.$$typeof
+      ) {
+        workInProgress.tag = 1;
+        if (isContextProvider(updateExpirationTime)) {
+          var hasContext = !0;
+          pushContextProvider(workInProgress);
+        } else hasContext = !1;
+        workInProgress.memoizedState =
+          null !== context.state && void 0 !== context.state
+            ? context.state
+            : null;
+        var getDerivedStateFromProps =
+          updateExpirationTime.getDerivedStateFromProps;
+        "function" === typeof getDerivedStateFromProps &&
+          applyDerivedStateFromProps(
+            workInProgress,
+            updateExpirationTime,
+            getDerivedStateFromProps,
+            current$$1
+          );
+        context.updater = classComponentUpdater;
+        workInProgress.stateNode = context;
+        context._reactInternalFiber = workInProgress;
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          current$$1,
+          renderExpirationTime
+        );
+        workInProgress = finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          hasContext,
+          renderExpirationTime
+        );
+      } else
+        (workInProgress.tag = 0),
+          reconcileChildren(
+            null,
+            workInProgress,
+            context,
+            renderExpirationTime
+          ),
+          (workInProgress = workInProgress.child);
+      return workInProgress;
+    case 16:
+      context = workInProgress.elementType;
+      null !== current$$1 &&
+        ((current$$1.alternate = null),
+        (workInProgress.alternate = null),
+        (workInProgress.effectTag |= 2));
+      hasContext = workInProgress.pendingProps;
+      current$$1 = readLazyComponentType(context);
+      workInProgress.type = current$$1;
+      context = workInProgress.tag = resolveLazyComponentTag(current$$1);
+      hasContext = resolveDefaultProps(current$$1, hasContext);
+      getDerivedStateFromProps = void 0;
+      switch (context) {
+        case 0:
+          getDerivedStateFromProps = updateFunctionComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 1:
+          getDerivedStateFromProps = updateClassComponent(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 11:
+          getDerivedStateFromProps = updateForwardRef(
+            null,
+            workInProgress,
+            current$$1,
+            hasContext,
+            renderExpirationTime
+          );
+          break;
+        case 14:
+          getDerivedStateFromProps = updateMemoComponent(
+            null,
+            workInProgress,
+            current$$1,
+            resolveDefaultProps(current$$1.type, hasContext),
+            updateExpirationTime,
+            renderExpirationTime
+          );
+          break;
+        default:
+          invariant(
+            !1,
+            "Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",
+            current$$1,
+            ""
+          );
+      }
+      return getDerivedStateFromProps;
     case 0:
-      return updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateFunctionComponent(
+          current$$1,
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        )
       );
     case 1:
-      var _Component5 = workInProgress.type._reactResult;
-      updateExpirationTime = workInProgress.pendingProps;
-      current$$1 = updateFunctionalComponent(
-        current$$1,
-        workInProgress,
-        _Component5,
-        resolveDefaultProps(_Component5, updateExpirationTime),
-        renderExpirationTime
-      );
-      workInProgress.memoizedProps = updateExpirationTime;
-      return current$$1;
-    case 2:
-      return updateClassComponent(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 3:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateClassComponent(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateClassComponent(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 5:
+    case 3:
       return (
         pushHostRootContext(workInProgress),
         (updateExpirationTime = workInProgress.updateQueue),
@@ -3963,8 +4230,8 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           null !== updateExpirationTime,
           "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue."
         ),
-        (_Component5 = workInProgress.memoizedState),
-        (_Component5 = null !== _Component5 ? _Component5.element : null),
+        (context = workInProgress.memoizedState),
+        (context = null !== context ? context.element : null),
         processUpdateQueue(
           workInProgress,
           updateExpirationTime,
@@ -3973,7 +4240,7 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
           renderExpirationTime
         ),
         (updateExpirationTime = workInProgress.memoizedState.element),
-        updateExpirationTime === _Component5
+        updateExpirationTime === context
           ? (workInProgress = bailoutOnAlreadyFinishedWork(
               current$$1,
               workInProgress,
@@ -3988,32 +4255,33 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             (workInProgress = workInProgress.child)),
         workInProgress
       );
-    case 7:
+    case 5:
       return (
         pushHostContext(workInProgress),
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (updateExpirationTime = workInProgress.pendingProps.children),
         markRef(current$$1, workInProgress),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         (workInProgress = workInProgress.child),
         workInProgress
       );
-    case 8:
+    case 6:
       return (
         null === current$$1 && tryToClaimNextHydratableInstance(workInProgress),
-        (workInProgress.memoizedProps = workInProgress.pendingProps),
         null
       );
-    case 16:
-      return null;
-    case 6:
+    case 13:
+      return updateSuspenseComponent(
+        current$$1,
+        workInProgress,
+        renderExpirationTime
+      );
+    case 4:
       return (
         pushHostContainer(
           workInProgress,
@@ -4033,93 +4301,79 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
               updateExpirationTime,
               renderExpirationTime
             ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 13:
-      return updateForwardRef(
-        current$$1,
-        workInProgress,
-        workInProgress.type,
-        workInProgress.pendingProps,
-        renderExpirationTime
-      );
-    case 14:
+    case 11:
       return (
-        (_Component5 = workInProgress.type._reactResult),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (current$$1 = updateForwardRef(
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        updateForwardRef(
           current$$1,
           workInProgress,
-          _Component5,
-          resolveDefaultProps(_Component5, updateExpirationTime),
+          updateExpirationTime,
+          context,
           renderExpirationTime
-        )),
-        (workInProgress.memoizedProps = updateExpirationTime),
-        current$$1
+        )
       );
-    case 9:
+    case 7:
       return (
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 10:
+    case 8:
       return (
-        (updateExpirationTime = workInProgress.pendingProps.children),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 15:
+    case 12:
       return (
         (workInProgress.effectTag |= 4),
-        (updateExpirationTime = workInProgress.pendingProps),
         reconcileChildren(
           current$$1,
           workInProgress,
-          updateExpirationTime.children,
+          workInProgress.pendingProps.children,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
-    case 12:
+    case 10:
       a: {
         updateExpirationTime = workInProgress.type._context;
-        _Component5 = workInProgress.pendingProps;
-        var oldProps = workInProgress.memoizedProps,
-          newValue = _Component5.value;
-        workInProgress.memoizedProps = _Component5;
-        pushProvider(workInProgress, newValue);
-        if (null !== oldProps) {
-          var oldValue = oldProps.value;
-          newValue =
-            (oldValue === newValue &&
-              (0 !== oldValue || 1 / oldValue === 1 / newValue)) ||
-            (oldValue !== oldValue && newValue !== newValue)
+        context = workInProgress.pendingProps;
+        getDerivedStateFromProps = workInProgress.memoizedProps;
+        hasContext = context.value;
+        pushProvider(workInProgress, hasContext);
+        if (null !== getDerivedStateFromProps) {
+          var oldValue = getDerivedStateFromProps.value;
+          hasContext =
+            (oldValue === hasContext &&
+              (0 !== oldValue || 1 / oldValue === 1 / hasContext)) ||
+            (oldValue !== oldValue && hasContext !== hasContext)
               ? 0
               : ("function" ===
                 typeof updateExpirationTime._calculateChangedBits
                   ? updateExpirationTime._calculateChangedBits(
                       oldValue,
-                      newValue
+                      hasContext
                     )
                   : 1073741823) | 0;
-          if (0 === newValue) {
+          if (0 === hasContext) {
             if (
-              oldProps.children === _Component5.children &&
+              getDerivedStateFromProps.children === context.children &&
               !didPerformWorkStackCursor.current
             ) {
               workInProgress = bailoutOnAlreadyFinishedWork(
@@ -4131,113 +4385,175 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
             }
           } else
             for (
-              oldProps = workInProgress.child,
-                null !== oldProps && (oldProps.return = workInProgress);
-              null !== oldProps;
+              getDerivedStateFromProps = workInProgress.child,
+                null !== getDerivedStateFromProps &&
+                  (getDerivedStateFromProps.return = workInProgress);
+              null !== getDerivedStateFromProps;
 
             ) {
-              oldValue = oldProps.firstContextDependency;
+              oldValue = getDerivedStateFromProps.firstContextDependency;
               if (null !== oldValue) {
                 do {
                   if (
                     oldValue.context === updateExpirationTime &&
-                    0 !== (oldValue.observedBits & newValue)
+                    0 !== (oldValue.observedBits & hasContext)
                   ) {
-                    if (2 === oldProps.tag || 3 === oldProps.tag) {
+                    if (1 === getDerivedStateFromProps.tag) {
                       var nextFiber = createUpdate(renderExpirationTime);
                       nextFiber.tag = 2;
-                      enqueueUpdate(oldProps, nextFiber);
+                      enqueueUpdate(getDerivedStateFromProps, nextFiber);
                     }
-                    if (
-                      0 === oldProps.expirationTime ||
-                      oldProps.expirationTime > renderExpirationTime
-                    )
-                      oldProps.expirationTime = renderExpirationTime;
-                    nextFiber = oldProps.alternate;
+                    getDerivedStateFromProps.expirationTime <
+                      renderExpirationTime &&
+                      (getDerivedStateFromProps.expirationTime = renderExpirationTime);
+                    nextFiber = getDerivedStateFromProps.alternate;
                     null !== nextFiber &&
-                      (0 === nextFiber.expirationTime ||
-                        nextFiber.expirationTime > renderExpirationTime) &&
+                      nextFiber.expirationTime < renderExpirationTime &&
                       (nextFiber.expirationTime = renderExpirationTime);
-                    for (var node = oldProps.return; null !== node; ) {
+                    for (
+                      var node = getDerivedStateFromProps.return;
+                      null !== node;
+
+                    ) {
                       nextFiber = node.alternate;
-                      if (
-                        0 === node.childExpirationTime ||
-                        node.childExpirationTime > renderExpirationTime
-                      )
+                      if (node.childExpirationTime < renderExpirationTime)
                         (node.childExpirationTime = renderExpirationTime),
                           null !== nextFiber &&
-                            (0 === nextFiber.childExpirationTime ||
-                              nextFiber.childExpirationTime >
-                                renderExpirationTime) &&
+                            nextFiber.childExpirationTime <
+                              renderExpirationTime &&
                             (nextFiber.childExpirationTime = renderExpirationTime);
                       else if (
                         null !== nextFiber &&
-                        (0 === nextFiber.childExpirationTime ||
-                          nextFiber.childExpirationTime > renderExpirationTime)
+                        nextFiber.childExpirationTime < renderExpirationTime
                       )
                         nextFiber.childExpirationTime = renderExpirationTime;
                       else break;
                       node = node.return;
                     }
                   }
-                  nextFiber = oldProps.child;
+                  nextFiber = getDerivedStateFromProps.child;
                   oldValue = oldValue.next;
                 } while (null !== oldValue);
               } else
                 nextFiber =
-                  12 === oldProps.tag
-                    ? oldProps.type === workInProgress.type
+                  10 === getDerivedStateFromProps.tag
+                    ? getDerivedStateFromProps.type === workInProgress.type
                       ? null
-                      : oldProps.child
-                    : oldProps.child;
-              if (null !== nextFiber) nextFiber.return = oldProps;
+                      : getDerivedStateFromProps.child
+                    : getDerivedStateFromProps.child;
+              if (null !== nextFiber)
+                nextFiber.return = getDerivedStateFromProps;
               else
-                for (nextFiber = oldProps; null !== nextFiber; ) {
+                for (
+                  nextFiber = getDerivedStateFromProps;
+                  null !== nextFiber;
+
+                ) {
                   if (nextFiber === workInProgress) {
                     nextFiber = null;
                     break;
                   }
-                  oldProps = nextFiber.sibling;
-                  if (null !== oldProps) {
-                    oldProps.return = nextFiber.return;
-                    nextFiber = oldProps;
+                  getDerivedStateFromProps = nextFiber.sibling;
+                  if (null !== getDerivedStateFromProps) {
+                    getDerivedStateFromProps.return = nextFiber.return;
+                    nextFiber = getDerivedStateFromProps;
                     break;
                   }
                   nextFiber = nextFiber.return;
                 }
-              oldProps = nextFiber;
+              getDerivedStateFromProps = nextFiber;
             }
         }
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5.children,
+          context.children,
           renderExpirationTime
         );
         workInProgress = workInProgress.child;
       }
       return workInProgress;
-    case 11:
+    case 9:
       return (
-        (newValue = workInProgress.type),
-        (updateExpirationTime = workInProgress.pendingProps),
-        (_Component5 = updateExpirationTime.children),
+        (context = workInProgress.type),
+        (hasContext = workInProgress.pendingProps),
+        (updateExpirationTime = hasContext.children),
         prepareToReadContext(workInProgress, renderExpirationTime),
-        (newValue = readContext(
-          newValue,
-          updateExpirationTime.unstable_observedBits
-        )),
-        (_Component5 = _Component5(newValue)),
+        (context = readContext(context, hasContext.unstable_observedBits)),
+        (updateExpirationTime = updateExpirationTime(context)),
         (workInProgress.effectTag |= 1),
         reconcileChildren(
           current$$1,
           workInProgress,
-          _Component5,
+          updateExpirationTime,
           renderExpirationTime
         ),
-        (workInProgress.memoizedProps = updateExpirationTime),
         workInProgress.child
       );
+    case 14:
+      return (
+        (context = workInProgress.type),
+        (hasContext = resolveDefaultProps(
+          context,
+          workInProgress.pendingProps
+        )),
+        (hasContext = resolveDefaultProps(context.type, hasContext)),
+        updateMemoComponent(
+          current$$1,
+          workInProgress,
+          context,
+          hasContext,
+          updateExpirationTime,
+          renderExpirationTime
+        )
+      );
+    case 15:
+      return updateSimpleMemoComponent(
+        current$$1,
+        workInProgress,
+        workInProgress.type,
+        workInProgress.pendingProps,
+        updateExpirationTime,
+        renderExpirationTime
+      );
+    case 17:
+      return (
+        (updateExpirationTime = workInProgress.type),
+        (context = workInProgress.pendingProps),
+        (context =
+          workInProgress.elementType === updateExpirationTime
+            ? context
+            : resolveDefaultProps(updateExpirationTime, context)),
+        null !== current$$1 &&
+          ((current$$1.alternate = null),
+          (workInProgress.alternate = null),
+          (workInProgress.effectTag |= 2)),
+        (workInProgress.tag = 1),
+        isContextProvider(updateExpirationTime)
+          ? ((current$$1 = !0), pushContextProvider(workInProgress))
+          : (current$$1 = !1),
+        prepareToReadContext(workInProgress, renderExpirationTime),
+        constructClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        mountClassInstance(
+          workInProgress,
+          updateExpirationTime,
+          context,
+          renderExpirationTime
+        ),
+        finishClassComponent(
+          null,
+          workInProgress,
+          updateExpirationTime,
+          !0,
+          current$$1,
+          renderExpirationTime
+        )
+      );
     default:
       invariant(
         !1,
@@ -4245,9 +4561,27 @@ function beginWork(current$$1, workInProgress, renderExpirationTime) {
       );
   }
 }
-var updateHostContainer = void 0,
+var appendAllChildren = void 0,
+  updateHostContainer = void 0,
   updateHostComponent$1 = void 0,
   updateHostText$1 = void 0;
+appendAllChildren = function(parent, workInProgress) {
+  for (var node = workInProgress.child; null !== node; ) {
+    if (5 === node.tag || 6 === node.tag) parent._children.push(node.stateNode);
+    else if (4 !== node.tag && null !== node.child) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+    if (node === workInProgress) break;
+    for (; null === node.sibling; ) {
+      if (null === node.return || node.return === workInProgress) return;
+      node = node.return;
+    }
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+};
 updateHostContainer = function() {};
 updateHostComponent$1 = function(current, workInProgress, type, newProps) {
   current.memoizedProps !== newProps &&
@@ -4293,7 +4627,7 @@ function logError(boundary, errorInfo) {
     willRetry: !1
   };
   null !== boundary &&
-    2 === boundary.tag &&
+    1 === boundary.tag &&
     ((errorInfo.errorBoundary = boundary.stateNode),
     (errorInfo.errorBoundaryName = getComponentName(boundary.type)),
     (errorInfo.errorBoundaryFound = !0),
@@ -4317,32 +4651,55 @@ function safelyDetachRef(current$$1) {
       }
     else ref.current = null;
 }
-function commitUnmount(current$$1) {
+function commitUnmount(current$$1$jscomp$0) {
   "function" === typeof onCommitFiberUnmount &&
-    onCommitFiberUnmount(current$$1);
-  switch (current$$1.tag) {
-    case 2:
-    case 3:
-      safelyDetachRef(current$$1);
-      var instance = current$$1.stateNode;
-      if ("function" === typeof instance.componentWillUnmount)
+    onCommitFiberUnmount(current$$1$jscomp$0);
+  switch (current$$1$jscomp$0.tag) {
+    case 0:
+    case 11:
+    case 14:
+    case 15:
+      var updateQueue = current$$1$jscomp$0.updateQueue;
+      if (
+        null !== updateQueue &&
+        ((updateQueue = updateQueue.lastEffect), null !== updateQueue)
+      ) {
+        var effect = (updateQueue = updateQueue.next);
+        do {
+          var destroy = effect.destroy;
+          if (null !== destroy) {
+            var current$$1 = current$$1$jscomp$0;
+            try {
+              destroy();
+            } catch (error) {
+              captureCommitPhaseError(current$$1, error);
+            }
+          }
+          effect = effect.next;
+        } while (effect !== updateQueue);
+      }
+      break;
+    case 1:
+      safelyDetachRef(current$$1$jscomp$0);
+      updateQueue = current$$1$jscomp$0.stateNode;
+      if ("function" === typeof updateQueue.componentWillUnmount)
         try {
-          (instance.props = current$$1.memoizedProps),
-            (instance.state = current$$1.memoizedState),
-            instance.componentWillUnmount();
+          (updateQueue.props = current$$1$jscomp$0.memoizedProps),
+            (updateQueue.state = current$$1$jscomp$0.memoizedState),
+            updateQueue.componentWillUnmount();
         } catch (unmountError) {
-          captureCommitPhaseError(current$$1, unmountError);
+          captureCommitPhaseError(current$$1$jscomp$0, unmountError);
         }
       break;
-    case 7:
-      safelyDetachRef(current$$1);
+    case 5:
+      safelyDetachRef(current$$1$jscomp$0);
       break;
-    case 6:
-      unmountHostComponents(current$$1);
+    case 4:
+      unmountHostComponents(current$$1$jscomp$0);
   }
 }
 function isHostParent(fiber) {
-  return 7 === fiber.tag || 5 === fiber.tag || 6 === fiber.tag;
+  return 5 === fiber.tag || 3 === fiber.tag || 4 === fiber.tag;
 }
 function commitPlacement(finishedWork) {
   a: {
@@ -4361,15 +4718,15 @@ function commitPlacement(finishedWork) {
   }
   var isContainer = (parent = void 0);
   switch (parentFiber.tag) {
-    case 7:
+    case 5:
       parent = parentFiber.stateNode;
       isContainer = !1;
       break;
-    case 5:
+    case 3:
       parent = parentFiber.stateNode.containerInfo;
       isContainer = !0;
       break;
-    case 6:
+    case 4:
       parent = parentFiber.stateNode.containerInfo;
       isContainer = !0;
       break;
@@ -4391,11 +4748,11 @@ function commitPlacement(finishedWork) {
     parentFiber.sibling.return = parentFiber.return;
     for (
       parentFiber = parentFiber.sibling;
-      7 !== parentFiber.tag && 8 !== parentFiber.tag;
+      5 !== parentFiber.tag && 6 !== parentFiber.tag;
 
     ) {
       if (parentFiber.effectTag & 2) continue b;
-      if (null === parentFiber.child || 6 === parentFiber.tag) continue b;
+      if (null === parentFiber.child || 4 === parentFiber.tag) continue b;
       else
         (parentFiber.child.return = parentFiber),
           (parentFiber = parentFiber.child);
@@ -4406,7 +4763,7 @@ function commitPlacement(finishedWork) {
     }
   }
   for (var node = finishedWork; ; ) {
-    if (7 === node.tag || 8 === node.tag)
+    if (5 === node.tag || 6 === node.tag)
       if (parentFiber)
         if (isContainer)
           invariant(
@@ -4475,7 +4832,7 @@ function commitPlacement(finishedWork) {
                   [index.length - 1],
                   []
                 )));
-    else if (6 !== node.tag && null !== node.child) {
+    else if (4 !== node.tag && null !== node.child) {
       node.child.return = node;
       node = node.child;
       continue;
@@ -4506,15 +4863,15 @@ function unmountHostComponents(current$$1) {
           "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue."
         );
         switch (currentParentIsValid.tag) {
-          case 7:
+          case 5:
             currentParent = currentParentIsValid.stateNode;
             currentParentIsContainer = !1;
             break a;
-          case 5:
+          case 3:
             currentParent = currentParentIsValid.stateNode.containerInfo;
             currentParentIsContainer = !0;
             break a;
-          case 6:
+          case 4:
             currentParent = currentParentIsValid.stateNode.containerInfo;
             currentParentIsContainer = !0;
             break a;
@@ -4523,11 +4880,11 @@ function unmountHostComponents(current$$1) {
       }
       currentParentIsValid = !0;
     }
-    if (7 === node.tag || 8 === node.tag) {
+    if (5 === node.tag || 6 === node.tag) {
       a: for (var root = node, node$jscomp$0 = root; ; )
         if (
           (commitUnmount(node$jscomp$0),
-          null !== node$jscomp$0.child && 6 !== node$jscomp$0.tag)
+          null !== node$jscomp$0.child && 4 !== node$jscomp$0.tag)
         )
           (node$jscomp$0.child.return = node$jscomp$0),
             (node$jscomp$0 = node$jscomp$0.child);
@@ -4555,7 +4912,7 @@ function unmountHostComponents(current$$1) {
         UIManager.manageChildren(root._nativeTag, [], [], [], [], [child]);
       }
     } else if (
-      (6 === node.tag
+      (4 === node.tag
         ? ((currentParent = node.stateNode.containerInfo),
           (currentParentIsContainer = !0))
         : commitUnmount(node),
@@ -4569,7 +4926,7 @@ function unmountHostComponents(current$$1) {
     for (; null === node.sibling; ) {
       if (null === node.return || node.return === current$$1) return;
       node = node.return;
-      6 === node.tag && (currentParentIsValid = !1);
+      4 === node.tag && (currentParentIsValid = !1);
     }
     node.sibling.return = node.return;
     node = node.sibling;
@@ -4577,10 +4934,14 @@ function unmountHostComponents(current$$1) {
 }
 function commitWork(current$$1, finishedWork) {
   switch (finishedWork.tag) {
-    case 2:
-    case 3:
+    case 0:
+    case 11:
+    case 14:
+    case 15:
       break;
-    case 7:
+    case 1:
+      break;
+    case 5:
       var instance = finishedWork.stateNode;
       if (null != instance) {
         var newProps = finishedWork.memoizedProps;
@@ -4604,7 +4965,7 @@ function commitWork(current$$1, finishedWork) {
             ));
       }
       break;
-    case 8:
+    case 6:
       invariant(
         null !== finishedWork.stateNode,
         "This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue."
@@ -4613,11 +4974,78 @@ function commitWork(current$$1, finishedWork) {
         text: finishedWork.memoizedProps
       });
       break;
-    case 5:
+    case 3:
       break;
-    case 15:
+    case 12:
       break;
-    case 16:
+    case 13:
+      newProps = finishedWork.memoizedState;
+      current$$1 = finishedWork;
+      null === newProps
+        ? (instance = !1)
+        : ((instance = !0),
+          (current$$1 = finishedWork.child),
+          0 === newProps.timedOutAt &&
+            (newProps.timedOutAt = requestCurrentTime()));
+      if (null !== current$$1)
+        a: for (newProps = finishedWork = current$$1; ; ) {
+          if (5 === newProps.tag)
+            if (((current$$1 = newProps.stateNode), instance)) {
+              updatePayload = current$$1.viewConfig;
+              var updatePayload$jscomp$0 = diffProperties(
+                null,
+                emptyObject,
+                { style: { display: "none" } },
+                updatePayload.validAttributes
+              );
+              UIManager.updateView(
+                current$$1._nativeTag,
+                updatePayload.uiViewClassName,
+                updatePayload$jscomp$0
+              );
+            } else {
+              current$$1 = newProps.stateNode;
+              updatePayload$jscomp$0 = newProps.memoizedProps;
+              updatePayload = current$$1.viewConfig;
+              var prevProps = Object.assign({}, updatePayload$jscomp$0, {
+                style: [updatePayload$jscomp$0.style, { display: "none" }]
+              });
+              updatePayload$jscomp$0 = diffProperties(
+                null,
+                prevProps,
+                updatePayload$jscomp$0,
+                updatePayload.validAttributes
+              );
+              UIManager.updateView(
+                current$$1._nativeTag,
+                updatePayload.uiViewClassName,
+                updatePayload$jscomp$0
+              );
+            }
+          else {
+            if (6 === newProps.tag) throw Error("Not yet implemented.");
+            if (13 === newProps.tag && null !== newProps.memoizedState) {
+              current$$1 = newProps.child.sibling;
+              current$$1.return = newProps;
+              newProps = current$$1;
+              continue;
+            } else if (null !== newProps.child) {
+              newProps.child.return = newProps;
+              newProps = newProps.child;
+              continue;
+            }
+          }
+          if (newProps === finishedWork) break a;
+          for (; null === newProps.sibling; ) {
+            if (null === newProps.return || newProps.return === finishedWork)
+              break a;
+            newProps = newProps.return;
+          }
+          newProps.sibling.return = newProps.return;
+          newProps = newProps.sibling;
+        }
+      break;
+    case 17:
       break;
     default:
       invariant(
@@ -4640,13 +5068,21 @@ function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
 function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
   expirationTime = createUpdate(expirationTime);
   expirationTime.tag = 3;
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+  if ("function" === typeof getDerivedStateFromError) {
+    var error$jscomp$0 = errorInfo.value;
+    expirationTime.payload = function() {
+      return getDerivedStateFromError(error$jscomp$0);
+    };
+  }
   var inst = fiber.stateNode;
   null !== inst &&
     "function" === typeof inst.componentDidCatch &&
     (expirationTime.callback = function() {
-      null === legacyErrorBoundariesThatAlreadyFailed
-        ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
-        : legacyErrorBoundariesThatAlreadyFailed.add(this);
+      "function" !== typeof getDerivedStateFromError &&
+        (null === legacyErrorBoundariesThatAlreadyFailed
+          ? (legacyErrorBoundariesThatAlreadyFailed = new Set([this]))
+          : legacyErrorBoundariesThatAlreadyFailed.add(this));
       var error = errorInfo.value,
         stack = errorInfo.stack;
       logError(fiber, errorInfo);
@@ -4663,39 +5099,121 @@ function throwException(
   value,
   renderExpirationTime
 ) {
-  sourceFiber.effectTag |= 512;
+  sourceFiber.effectTag |= 1024;
   sourceFiber.firstEffect = sourceFiber.lastEffect = null;
+  if (
+    null !== value &&
+    "object" === typeof value &&
+    "function" === typeof value.then
+  ) {
+    var thenable = value;
+    value = returnFiber;
+    var earliestTimeoutMs = -1,
+      startTimeMs = -1;
+    do {
+      if (13 === value.tag) {
+        var current$$1 = value.alternate;
+        if (
+          null !== current$$1 &&
+          ((current$$1 = current$$1.memoizedState), null !== current$$1)
+        ) {
+          startTimeMs = 10 * (1073741822 - current$$1.timedOutAt);
+          break;
+        }
+        current$$1 = value.pendingProps.maxDuration;
+        if ("number" === typeof current$$1)
+          if (0 >= current$$1) earliestTimeoutMs = 0;
+          else if (-1 === earliestTimeoutMs || current$$1 < earliestTimeoutMs)
+            earliestTimeoutMs = current$$1;
+      }
+      value = value.return;
+    } while (null !== value);
+    value = returnFiber;
+    do {
+      if ((current$$1 = 13 === value.tag))
+        current$$1 =
+          void 0 === value.memoizedProps.fallback
+            ? !1
+            : null === value.memoizedState;
+      if (current$$1) {
+        returnFiber = retrySuspendedRoot.bind(
+          null,
+          root,
+          value,
+          sourceFiber,
+          0 === (value.mode & 1) ? 1073741823 : renderExpirationTime
+        );
+        returnFiber = tracing.unstable_wrap(returnFiber);
+        thenable.then(returnFiber, returnFiber);
+        if (0 === (value.mode & 1)) {
+          value.effectTag |= 64;
+          sourceFiber.effectTag &= -1957;
+          1 === sourceFiber.tag &&
+            null === sourceFiber.alternate &&
+            (sourceFiber.tag = 17);
+          sourceFiber.expirationTime = renderExpirationTime;
+          return;
+        }
+        -1 === earliestTimeoutMs
+          ? (root = 1073741823)
+          : (-1 === startTimeMs &&
+              (startTimeMs =
+                10 *
+                  (1073741822 -
+                    findEarliestOutstandingPriorityLevel(
+                      root,
+                      renderExpirationTime
+                    )) -
+                5e3),
+            (root = startTimeMs + earliestTimeoutMs));
+        0 <= root &&
+          nextLatestAbsoluteTimeoutMs < root &&
+          (nextLatestAbsoluteTimeoutMs = root);
+        value.effectTag |= 2048;
+        value.expirationTime = renderExpirationTime;
+        return;
+      }
+      value = value.return;
+    } while (null !== value);
+    value = Error(
+      (getComponentName(sourceFiber.type) || "A React component") +
+        " suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." +
+        getStackByFiberInDevAndProd(sourceFiber)
+    );
+  }
   nextRenderDidError = !0;
   value = createCapturedValue(value, sourceFiber);
   root = returnFiber;
   do {
     switch (root.tag) {
-      case 5:
-        root.effectTag |= 1024;
+      case 3:
+        sourceFiber = value;
+        root.effectTag |= 2048;
         root.expirationTime = renderExpirationTime;
         renderExpirationTime = createRootErrorUpdate(
           root,
-          value,
+          sourceFiber,
           renderExpirationTime
         );
         enqueueCapturedUpdate(root, renderExpirationTime);
         return;
-      case 2:
-      case 3:
+      case 1:
         if (
-          ((returnFiber = value),
-          (sourceFiber = root.stateNode),
+          ((sourceFiber = value),
+          (returnFiber = root.type),
+          (thenable = root.stateNode),
           0 === (root.effectTag & 64) &&
-            null !== sourceFiber &&
-            "function" === typeof sourceFiber.componentDidCatch &&
-            (null === legacyErrorBoundariesThatAlreadyFailed ||
-              !legacyErrorBoundariesThatAlreadyFailed.has(sourceFiber)))
+            ("function" === typeof returnFiber.getDerivedStateFromError ||
+              (null !== thenable &&
+                "function" === typeof thenable.componentDidCatch &&
+                (null === legacyErrorBoundariesThatAlreadyFailed ||
+                  !legacyErrorBoundariesThatAlreadyFailed.has(thenable)))))
         ) {
-          root.effectTag |= 1024;
+          root.effectTag |= 2048;
           root.expirationTime = renderExpirationTime;
           renderExpirationTime = createClassErrorUpdate(
             root,
-            returnFiber,
+            sourceFiber,
             renderExpirationTime
           );
           enqueueCapturedUpdate(root, renderExpirationTime);
@@ -4707,24 +5225,14 @@ function throwException(
 }
 function unwindWork(workInProgress) {
   switch (workInProgress.tag) {
-    case 2:
+    case 1:
       isContextProvider(workInProgress.type) && popContext(workInProgress);
       var effectTag = workInProgress.effectTag;
-      return effectTag & 1024
-        ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+      return effectTag & 2048
+        ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
           workInProgress)
         : null;
     case 3:
-      return (
-        isContextProvider(workInProgress.type._reactResult) &&
-          popContext(workInProgress),
-        (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
-            workInProgress)
-          : null
-      );
-    case 5:
       return (
         popHostContainer(workInProgress),
         popTopLevelContextObject(workInProgress),
@@ -4733,43 +5241,45 @@ function unwindWork(workInProgress) {
           0 === (effectTag & 64),
           "The root failed to unmount after an error. This is likely a bug in React. Please file an issue."
         ),
-        (workInProgress.effectTag = (effectTag & -1025) | 64),
+        (workInProgress.effectTag = (effectTag & -2049) | 64),
         workInProgress
       );
-    case 7:
+    case 5:
       return popHostContext(workInProgress), null;
-    case 16:
+    case 13:
       return (
         (effectTag = workInProgress.effectTag),
-        effectTag & 1024
-          ? ((workInProgress.effectTag = (effectTag & -1025) | 64),
+        effectTag & 2048
+          ? ((workInProgress.effectTag = (effectTag & -2049) | 64),
             workInProgress)
           : null
       );
-    case 6:
+    case 4:
       return popHostContainer(workInProgress), null;
-    case 12:
+    case 10:
       return popProvider(workInProgress), null;
     default:
       return null;
   }
 }
-var Dispatcher = { readContext: readContext },
+var DispatcherWithoutHooks = { readContext: readContext },
   ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner;
 invariant(
-  null != tracking.__interactionsRef &&
-    null != tracking.__interactionsRef.current,
-  "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `schedule/tracking` module with `schedule/tracking-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling"
+  null != tracing.__interactionsRef &&
+    null != tracing.__interactionsRef.current,
+  "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling"
 );
 var isWorking = !1,
   nextUnitOfWork = null,
   nextRoot = null,
   nextRenderExpirationTime = 0,
+  nextLatestAbsoluteTimeoutMs = -1,
   nextRenderDidError = !1,
   nextEffect = null,
   isCommitting$1 = !1,
-  legacyErrorBoundariesThatAlreadyFailed = null,
-  suspenseDidTimeout = !1;
+  passiveEffectCallbackHandle = null,
+  passiveEffectCallback = null,
+  legacyErrorBoundariesThatAlreadyFailed = null;
 function resetStack() {
   if (null !== nextUnitOfWork)
     for (
@@ -4779,7 +5289,7 @@ function resetStack() {
     ) {
       var interruptedWork$jscomp$0 = interruptedWork;
       switch (interruptedWork$jscomp$0.tag) {
-        case 2:
+        case 1:
           var childContextTypes =
             interruptedWork$jscomp$0.type.childContextTypes;
           null !== childContextTypes &&
@@ -4787,29 +5297,23 @@ function resetStack() {
             popContext(interruptedWork$jscomp$0);
           break;
         case 3:
-          childContextTypes =
-            interruptedWork$jscomp$0.type._reactResult.childContextTypes;
-          null !== childContextTypes &&
-            void 0 !== childContextTypes &&
-            popContext(interruptedWork$jscomp$0);
-          break;
-        case 5:
           popHostContainer(interruptedWork$jscomp$0);
           popTopLevelContextObject(interruptedWork$jscomp$0);
           break;
-        case 7:
+        case 5:
           popHostContext(interruptedWork$jscomp$0);
           break;
-        case 6:
+        case 4:
           popHostContainer(interruptedWork$jscomp$0);
           break;
-        case 12:
+        case 10:
           popProvider(interruptedWork$jscomp$0);
       }
       interruptedWork = interruptedWork.return;
     }
   nextRoot = null;
   nextRenderExpirationTime = 0;
+  nextLatestAbsoluteTimeoutMs = -1;
   nextRenderDidError = !1;
   nextUnitOfWork = null;
 }
@@ -4843,39 +5347,48 @@ function commitAllHostEffects() {
           unmountHostComponents(effectTag),
           (effectTag.return = null),
           (effectTag.child = null),
-          effectTag.alternate &&
-            ((effectTag.alternate.child = null),
-            (effectTag.alternate.return = null));
+          (effectTag.memoizedState = null),
+          (effectTag.updateQueue = null),
+          (effectTag = effectTag.alternate),
+          null !== effectTag &&
+            ((effectTag.return = null),
+            (effectTag.child = null),
+            (effectTag.memoizedState = null),
+            (effectTag.updateQueue = null));
     }
     nextEffect = nextEffect.nextEffect;
   }
 }
 function commitBeforeMutationLifecycles() {
   for (; null !== nextEffect; ) {
-    if (nextEffect.effectTag & 256) {
-      var current$$1 = nextEffect.alternate;
+    if (nextEffect.effectTag & 256)
       a: {
-        var finishedWork = nextEffect;
+        var current$$1 = nextEffect.alternate,
+          finishedWork = nextEffect;
         switch (finishedWork.tag) {
-          case 2:
-          case 3:
+          case 0:
+          case 11:
+          case 15:
+            break a;
+          case 1:
             if (finishedWork.effectTag & 256 && null !== current$$1) {
               var prevProps = current$$1.memoizedProps,
                 prevState = current$$1.memoizedState;
               current$$1 = finishedWork.stateNode;
-              current$$1.props = finishedWork.memoizedProps;
-              current$$1.state = finishedWork.memoizedState;
               finishedWork = current$$1.getSnapshotBeforeUpdate(
-                prevProps,
+                finishedWork.elementType === finishedWork.type
+                  ? prevProps
+                  : resolveDefaultProps(finishedWork.type, prevProps),
                 prevState
               );
               current$$1.__reactInternalSnapshotBeforeUpdate = finishedWork;
             }
             break a;
+          case 3:
           case 5:
-          case 7:
-          case 8:
           case 6:
+          case 4:
+          case 17:
             break a;
           default:
             invariant(
@@ -4884,7 +5397,6 @@ function commitBeforeMutationLifecycles() {
             );
         }
       }
-    }
     nextEffect = nextEffect.nextEffect;
   }
 }
@@ -4900,47 +5412,47 @@ function commitAllLifeCycles(
         finishedWork = nextEffect,
         committedExpirationTime = committedExpirationTime$jscomp$0;
       switch (finishedWork.tag) {
-        case 2:
-        case 3:
+        case 0:
+        case 11:
+        case 15:
+          break;
+        case 1:
           finishedRoot = finishedWork.stateNode;
           if (finishedWork.effectTag & 4)
-            if (null === current$$1)
-              (finishedRoot.props = finishedWork.memoizedProps),
-                (finishedRoot.state = finishedWork.memoizedState),
-                finishedRoot.componentDidMount();
+            if (null === current$$1) finishedRoot.componentDidMount();
             else {
-              var prevProps = current$$1.memoizedProps;
-              current$$1 = current$$1.memoizedState;
-              finishedRoot.props = finishedWork.memoizedProps;
-              finishedRoot.state = finishedWork.memoizedState;
+              var prevProps =
+                finishedWork.elementType === finishedWork.type
+                  ? current$$1.memoizedProps
+                  : resolveDefaultProps(
+                      finishedWork.type,
+                      current$$1.memoizedProps
+                    );
               finishedRoot.componentDidUpdate(
                 prevProps,
-                current$$1,
+                current$$1.memoizedState,
                 finishedRoot.__reactInternalSnapshotBeforeUpdate
               );
             }
           current$$1 = finishedWork.updateQueue;
           null !== current$$1 &&
-            ((finishedRoot.props = finishedWork.memoizedProps),
-            (finishedRoot.state = finishedWork.memoizedState),
             commitUpdateQueue(
               finishedWork,
               current$$1,
               finishedRoot,
               committedExpirationTime
-            ));
+            );
           break;
-        case 5:
+        case 3:
           current$$1 = finishedWork.updateQueue;
           if (null !== current$$1) {
             finishedRoot = null;
             if (null !== finishedWork.child)
               switch (finishedWork.child.tag) {
-                case 7:
+                case 5:
                   finishedRoot = finishedWork.child.stateNode;
                   break;
-                case 2:
-                case 3:
+                case 1:
                   finishedRoot = finishedWork.child.stateNode;
               }
             commitUpdateQueue(
@@ -4951,13 +5463,13 @@ function commitAllLifeCycles(
             );
           }
           break;
-        case 7:
-          break;
-        case 8:
+        case 5:
           break;
         case 6:
           break;
-        case 15:
+        case 4:
+          break;
+        case 12:
           committedExpirationTime = finishedWork.memoizedProps.onRender;
           committedExpirationTime(
             finishedWork.memoizedProps.id,
@@ -4969,7 +5481,9 @@ function commitAllLifeCycles(
             finishedRoot.memoizedInteractions
           );
           break;
-        case 16:
+        case 13:
+          break;
+        case 17:
           break;
         default:
           invariant(
@@ -4985,11 +5499,14 @@ function commitAllLifeCycles(
         "function" === typeof effectTag
           ? effectTag(finishedWork)
           : (effectTag.current = finishedWork)));
-    effectTag = nextEffect.nextEffect;
-    nextEffect.nextEffect = null;
-    nextEffect = effectTag;
+    nextEffect = nextEffect.nextEffect;
   }
 }
+function flushPassiveEffects() {
+  null !== passiveEffectCallback &&
+    (scheduler.unstable_cancelCallback(passiveEffectCallbackHandle),
+    passiveEffectCallback());
+}
 function commitRoot(root, finishedWork) {
   isCommitting$1 = isWorking = !0;
   invariant(
@@ -5006,27 +5523,13 @@ function commitRoot(root, finishedWork) {
     childExpirationTimeBeforeCommit = finishedWork.childExpirationTime;
   markCommittedPriorityLevels(
     root,
-    0 === updateExpirationTimeBeforeCommit ||
-    (0 !== childExpirationTimeBeforeCommit &&
-      childExpirationTimeBeforeCommit < updateExpirationTimeBeforeCommit)
+    childExpirationTimeBeforeCommit > updateExpirationTimeBeforeCommit
       ? childExpirationTimeBeforeCommit
       : updateExpirationTimeBeforeCommit
   );
   updateExpirationTimeBeforeCommit = null;
-  var committedInteractions = [];
-  updateExpirationTimeBeforeCommit = tracking.__interactionsRef.current;
-  tracking.__interactionsRef.current = root.memoizedInteractions;
-  root.pendingInteractionMap.forEach(function(
-    scheduledInteractions,
-    scheduledExpirationTime
-  ) {
-    scheduledExpirationTime <= committedExpirationTime &&
-      (committedInteractions.push.apply(
-        committedInteractions,
-        Array.from(scheduledInteractions)
-      ),
-      root.pendingInteractionMap.delete(scheduledExpirationTime));
-  });
+  updateExpirationTimeBeforeCommit = tracing.__interactionsRef.current;
+  tracing.__interactionsRef.current = root.memoizedInteractions;
   ReactCurrentOwner$2.current = null;
   childExpirationTimeBeforeCommit = void 0;
   1 < finishedWork.effectTag
@@ -5090,18 +5593,18 @@ function commitRoot(root, finishedWork) {
     onCommitFiberRoot(finishedWork.stateNode);
   childExpirationTimeBeforeCommit = finishedWork.expirationTime;
   finishedWork = finishedWork.childExpirationTime;
-  finishedWork =
-    0 === childExpirationTimeBeforeCommit ||
-    (0 !== finishedWork && finishedWork < childExpirationTimeBeforeCommit)
+  var earliestRemainingTimeAfterCommit =
+    finishedWork > childExpirationTimeBeforeCommit
       ? finishedWork
       : childExpirationTimeBeforeCommit;
-  0 === finishedWork && (legacyErrorBoundariesThatAlreadyFailed = null);
-  onCommit(root, finishedWork);
-  tracking.__interactionsRef.current = updateExpirationTimeBeforeCommit;
+  0 === earliestRemainingTimeAfterCommit &&
+    (legacyErrorBoundariesThatAlreadyFailed = null);
+  onCommit(root, earliestRemainingTimeAfterCommit);
+  tracing.__interactionsRef.current = updateExpirationTimeBeforeCommit;
   var subscriber = void 0;
   try {
     if (
-      ((subscriber = tracking.__subscriberRef.current),
+      ((subscriber = tracing.__subscriberRef.current),
       null !== subscriber && 0 < root.memoizedInteractions.size)
     )
       subscriber.onWorkStopped(
@@ -5111,17 +5614,24 @@ function commitRoot(root, finishedWork) {
   } catch (error) {
     hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
   } finally {
-    suspenseDidTimeout ||
-      committedInteractions.forEach(function(interaction) {
-        interaction.__count--;
-        if (null !== subscriber && 0 === interaction.__count)
-          try {
-            subscriber.onInteractionScheduledWorkCompleted(interaction);
-          } catch (error) {
-            hasUnhandledError ||
-              ((hasUnhandledError = !0), (unhandledError = error));
-          }
-      });
+    var pendingInteractionMap = root.pendingInteractionMap;
+    pendingInteractionMap.forEach(function(
+      scheduledInteractions,
+      scheduledExpirationTime
+    ) {
+      scheduledExpirationTime > earliestRemainingTimeAfterCommit &&
+        (pendingInteractionMap.delete(scheduledExpirationTime),
+        scheduledInteractions.forEach(function(interaction) {
+          interaction.__count--;
+          if (null !== subscriber && 0 === interaction.__count)
+            try {
+              subscriber.onInteractionScheduledWorkCompleted(interaction);
+            } catch (error) {
+              hasUnhandledError ||
+                ((hasUnhandledError = !0), (unhandledError = error));
+            }
+        }));
+    });
   }
 }
 function completeUnitOfWork(workInProgress) {
@@ -5129,237 +5639,225 @@ function completeUnitOfWork(workInProgress) {
     var current$$1 = workInProgress.alternate,
       returnFiber = workInProgress.return,
       siblingFiber = workInProgress.sibling;
-    if (0 === (workInProgress.effectTag & 512)) {
+    if (0 === (workInProgress.effectTag & 1024)) {
+      nextUnitOfWork = workInProgress;
       if (workInProgress.mode & 4) {
         var fiber = workInProgress;
         profilerStartTime = now$1();
         0 > fiber.actualStartTime && (fiber.actualStartTime = now$1());
       }
-      var current = current$$1;
-      current$$1 = workInProgress;
-      fiber = current$$1.pendingProps;
-      switch (current$$1.tag) {
-        case 0:
-        case 1:
-          break;
-        case 2:
-          isContextProvider(current$$1.type) && popContext(current$$1);
-          break;
-        case 3:
-          isContextProvider(current$$1.type._reactResult) &&
-            popContext(current$$1);
-          break;
-        case 5:
-          popHostContainer(current$$1);
-          popTopLevelContextObject(current$$1);
-          fiber = current$$1.stateNode;
-          fiber.pendingContext &&
-            ((fiber.context = fiber.pendingContext),
-            (fiber.pendingContext = null));
-          if (null === current || null === current.child)
-            current$$1.effectTag &= -3;
-          updateHostContainer(current$$1);
-          break;
-        case 7:
-          popHostContext(current$$1);
-          var rootContainerInstance = requiredContext(
+      a: {
+        var current = current$$1;
+        current$$1 = workInProgress;
+        var renderExpirationTime = nextRenderExpirationTime;
+        fiber = current$$1.pendingProps;
+        switch (current$$1.tag) {
+          case 2:
+            break;
+          case 16:
+            break;
+          case 15:
+          case 0:
+            break;
+          case 1:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          case 3:
+            popHostContainer(current$$1);
+            popTopLevelContextObject(current$$1);
+            fiber = current$$1.stateNode;
+            fiber.pendingContext &&
+              ((fiber.context = fiber.pendingContext),
+              (fiber.pendingContext = null));
+            if (null === current || null === current.child)
+              current$$1.effectTag &= -3;
+            updateHostContainer(current$$1);
+            break;
+          case 5:
+            popHostContext(current$$1);
+            renderExpirationTime = requiredContext(
               rootInstanceStackCursor.current
-            ),
-            type = current$$1.type;
-          if (null !== current && null != current$$1.stateNode)
-            updateHostComponent$1(
-              current,
-              current$$1,
-              type,
-              fiber,
-              rootContainerInstance
-            ),
-              current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
-          else if (fiber) {
-            current = requiredContext(contextStackCursor$1.current);
-            var internalInstanceHandle = current$$1,
-              tag = allocateTag(),
-              viewConfig = ReactNativeViewConfigRegistry.get(type);
-            invariant(
-              "RCTView" !== type || !current.isInAParentText,
-              "Nesting of <View> within <Text> is not currently supported."
-            );
-            var updatePayload = diffProperties(
-              null,
-              emptyObject,
-              fiber,
-              viewConfig.validAttributes
-            );
-            UIManager.createView(
-              tag,
-              viewConfig.uiViewClassName,
-              rootContainerInstance,
-              updatePayload
-            );
-            viewConfig = new ReactNativeFiberHostComponent(tag, viewConfig);
-            instanceCache[tag] = internalInstanceHandle;
-            instanceProps[tag] = fiber;
-            a: for (
-              internalInstanceHandle = viewConfig,
-                tag = current$$1,
-                updatePayload = tag.child;
-              null !== updatePayload;
-
-            ) {
-              if (7 === updatePayload.tag || 8 === updatePayload.tag)
-                internalInstanceHandle._children.push(updatePayload.stateNode);
-              else if (
-                6 !== updatePayload.tag &&
-                null !== updatePayload.child
-              ) {
-                updatePayload.child.return = updatePayload;
-                updatePayload = updatePayload.child;
-                continue;
-              }
-              if (updatePayload === tag) break;
-              for (; null === updatePayload.sibling; ) {
-                if (
-                  null === updatePayload.return ||
-                  updatePayload.return === tag
-                )
-                  break a;
-                updatePayload = updatePayload.return;
-              }
-              updatePayload.sibling.return = updatePayload.return;
-              updatePayload = updatePayload.sibling;
-            }
-            finalizeInitialChildren(
-              viewConfig,
-              type,
-              fiber,
-              rootContainerInstance,
-              current
-            ) && (current$$1.effectTag |= 4);
-            current$$1.stateNode = viewConfig;
-            null !== current$$1.ref && (current$$1.effectTag |= 128);
-          } else
-            invariant(
-              null !== current$$1.stateNode,
-              "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
             );
-          break;
-        case 8:
-          current && null != current$$1.stateNode
-            ? updateHostText$1(
+            var type = current$$1.type;
+            if (null !== current && null != current$$1.stateNode)
+              updateHostComponent$1(
                 current,
                 current$$1,
-                current.memoizedProps,
-                fiber
-              )
-            : ("string" !== typeof fiber &&
+                type,
+                fiber,
+                renderExpirationTime
+              ),
+                current.ref !== current$$1.ref && (current$$1.effectTag |= 128);
+            else if (fiber) {
+              current = requiredContext(contextStackCursor$1.current);
+              var internalInstanceHandle = current$$1,
+                tag = allocateTag(),
+                viewConfig = ReactNativeViewConfigRegistry.get(type);
+              invariant(
+                "RCTView" !== type || !current.isInAParentText,
+                "Nesting of <View> within <Text> is not currently supported."
+              );
+              var updatePayload = diffProperties(
+                null,
+                emptyObject,
+                fiber,
+                viewConfig.validAttributes
+              );
+              UIManager.createView(
+                tag,
+                viewConfig.uiViewClassName,
+                renderExpirationTime,
+                updatePayload
+              );
+              viewConfig = new ReactNativeFiberHostComponent(tag, viewConfig);
+              instanceCache[tag] = internalInstanceHandle;
+              instanceProps[tag] = fiber;
+              appendAllChildren(viewConfig, current$$1, !1, !1);
+              finalizeInitialChildren(
+                viewConfig,
+                type,
+                fiber,
+                renderExpirationTime,
+                current
+              ) && (current$$1.effectTag |= 4);
+              current$$1.stateNode = viewConfig;
+              null !== current$$1.ref && (current$$1.effectTag |= 128);
+            } else
+              invariant(
+                null !== current$$1.stateNode,
+                "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+              );
+            break;
+          case 6:
+            current && null != current$$1.stateNode
+              ? updateHostText$1(
+                  current,
+                  current$$1,
+                  current.memoizedProps,
+                  fiber
+                )
+              : ("string" !== typeof fiber &&
+                  invariant(
+                    null !== current$$1.stateNode,
+                    "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  ),
+                (current = requiredContext(rootInstanceStackCursor.current)),
+                (type = requiredContext(contextStackCursor$1.current)),
+                (renderExpirationTime = current$$1),
                 invariant(
-                  null !== current$$1.stateNode,
-                  "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."
+                  type.isInAParentText,
+                  "Text strings must be rendered within a <Text> component."
                 ),
-              (current = requiredContext(rootInstanceStackCursor.current)),
-              (type = requiredContext(contextStackCursor$1.current)),
-              (rootContainerInstance = current$$1),
-              invariant(
-                type.isInAParentText,
-                "Text strings must be rendered within a <Text> component."
-              ),
-              (type = allocateTag()),
-              UIManager.createView(type, "RCTRawText", current, {
-                text: fiber
-              }),
-              (instanceCache[type] = current$$1),
-              (rootContainerInstance.stateNode = type));
-          break;
-        case 13:
-        case 14:
-          break;
-        case 16:
-          break;
-        case 9:
-          break;
-        case 10:
-          break;
-        case 15:
-          break;
-        case 6:
-          popHostContainer(current$$1);
-          updateHostContainer(current$$1);
-          break;
-        case 12:
-          popProvider(current$$1);
-          break;
-        case 11:
-          break;
-        case 4:
-          invariant(
-            !1,
-            "An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue."
-          );
-        default:
-          invariant(
-            !1,
-            "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
-          );
+                (type = allocateTag()),
+                UIManager.createView(type, "RCTRawText", current, {
+                  text: fiber
+                }),
+                (instanceCache[type] = current$$1),
+                (renderExpirationTime.stateNode = type));
+            break;
+          case 11:
+            break;
+          case 13:
+            fiber = current$$1.memoizedState;
+            if (0 !== (current$$1.effectTag & 64)) {
+              current$$1.expirationTime = renderExpirationTime;
+              nextUnitOfWork = current$$1;
+              break a;
+            }
+            fiber = null !== fiber;
+            renderExpirationTime =
+              null !== current && null !== current.memoizedState;
+            null !== current &&
+              !fiber &&
+              renderExpirationTime &&
+              ((type = current.child.sibling),
+              null !== type &&
+                ((current = current$$1.firstEffect),
+                null !== current
+                  ? ((current$$1.firstEffect = type),
+                    (type.nextEffect = current))
+                  : ((current$$1.firstEffect = current$$1.lastEffect = type),
+                    (type.nextEffect = null)),
+                (type.effectTag = 8)));
+            if (
+              fiber !== renderExpirationTime ||
+              (0 === (current$$1.effectTag & 1) && fiber)
+            )
+              current$$1.effectTag |= 4;
+            break;
+          case 7:
+            break;
+          case 8:
+            break;
+          case 12:
+            break;
+          case 4:
+            popHostContainer(current$$1);
+            updateHostContainer(current$$1);
+            break;
+          case 10:
+            popProvider(current$$1);
+            break;
+          case 9:
+            break;
+          case 14:
+            break;
+          case 17:
+            isContextProvider(current$$1.type) && popContext(current$$1);
+            break;
+          default:
+            invariant(
+              !1,
+              "Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue."
+            );
+        }
+        nextUnitOfWork = null;
       }
-      nextUnitOfWork = null;
       workInProgress.mode & 4 &&
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !1);
-      current$$1 = nextUnitOfWork;
-      fiber = workInProgress;
+      current$$1 = workInProgress;
       if (
-        1073741823 === nextRenderExpirationTime ||
-        1073741823 !== fiber.childExpirationTime
+        1 === nextRenderExpirationTime ||
+        1 !== current$$1.childExpirationTime
       ) {
-        rootContainerInstance = 0;
-        if (fiber.mode & 4) {
-          type = fiber.actualDuration;
-          current = fiber.selfBaseDuration;
-          viewConfig =
-            null === fiber.alternate || fiber.child !== fiber.alternate.child;
+        fiber = 0;
+        if (current$$1.mode & 4) {
+          renderExpirationTime = current$$1.actualDuration;
+          type = current$$1.selfBaseDuration;
+          current =
+            null === current$$1.alternate ||
+            current$$1.child !== current$$1.alternate.child;
           for (
-            internalInstanceHandle = fiber.child;
+            internalInstanceHandle = current$$1.child;
             null !== internalInstanceHandle;
 
-          ) {
-            tag = internalInstanceHandle.expirationTime;
-            updatePayload = internalInstanceHandle.childExpirationTime;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== tag && tag < rootContainerInstance)
-            )
-              rootContainerInstance = tag;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== updatePayload && updatePayload < rootContainerInstance)
-            )
-              rootContainerInstance = updatePayload;
-            viewConfig && (type += internalInstanceHandle.actualDuration);
-            current += internalInstanceHandle.treeBaseDuration;
-            internalInstanceHandle = internalInstanceHandle.sibling;
-          }
-          fiber.actualDuration = type;
-          fiber.treeBaseDuration = current;
+          )
+            (tag = internalInstanceHandle.expirationTime),
+              (viewConfig = internalInstanceHandle.childExpirationTime),
+              tag > fiber && (fiber = tag),
+              viewConfig > fiber && (fiber = viewConfig),
+              current &&
+                (renderExpirationTime += internalInstanceHandle.actualDuration),
+              (type += internalInstanceHandle.treeBaseDuration),
+              (internalInstanceHandle = internalInstanceHandle.sibling);
+          current$$1.actualDuration = renderExpirationTime;
+          current$$1.treeBaseDuration = type;
         } else
-          for (type = fiber.child; null !== type; ) {
-            current = type.expirationTime;
-            viewConfig = type.childExpirationTime;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== current && current < rootContainerInstance)
-            )
-              rootContainerInstance = current;
-            if (
-              0 === rootContainerInstance ||
-              (0 !== viewConfig && viewConfig < rootContainerInstance)
-            )
-              rootContainerInstance = viewConfig;
-            type = type.sibling;
-          }
-        fiber.childExpirationTime = rootContainerInstance;
+          for (
+            renderExpirationTime = current$$1.child;
+            null !== renderExpirationTime;
+
+          )
+            (type = renderExpirationTime.expirationTime),
+              (current = renderExpirationTime.childExpirationTime),
+              type > fiber && (fiber = type),
+              current > fiber && (fiber = current),
+              (renderExpirationTime = renderExpirationTime.sibling);
+        current$$1.childExpirationTime = fiber;
       }
-      if (null !== current$$1) return current$$1;
+      if (null !== nextUnitOfWork) return nextUnitOfWork;
       null !== returnFiber &&
-        0 === (returnFiber.effectTag & 512) &&
+        0 === (returnFiber.effectTag & 1024) &&
         (null === returnFiber.firstEffect &&
           (returnFiber.firstEffect = workInProgress.firstEffect),
         null !== workInProgress.lastEffect &&
@@ -5372,23 +5870,19 @@ function completeUnitOfWork(workInProgress) {
             : (returnFiber.firstEffect = workInProgress),
           (returnFiber.lastEffect = workInProgress)));
     } else {
-      workInProgress.mode & 4 &&
+      if (workInProgress.mode & 4) {
         stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !1);
-      workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
-      if (null !== workInProgress) {
-        if (workInProgress.mode & 4) {
-          returnFiber = workInProgress.actualDuration;
-          for (siblingFiber = workInProgress.child; null !== siblingFiber; )
-            (returnFiber += siblingFiber.actualDuration),
-              (siblingFiber = siblingFiber.sibling);
-          workInProgress.actualDuration = returnFiber;
-        }
-        workInProgress.effectTag &= 511;
-        return workInProgress;
+        current$$1 = workInProgress.actualDuration;
+        for (fiber = workInProgress.child; null !== fiber; )
+          (current$$1 += fiber.actualDuration), (fiber = fiber.sibling);
+        workInProgress.actualDuration = current$$1;
       }
+      workInProgress = unwindWork(workInProgress, nextRenderExpirationTime);
+      if (null !== workInProgress)
+        return (workInProgress.effectTag &= 1023), workInProgress;
       null !== returnFiber &&
         ((returnFiber.firstEffect = returnFiber.lastEffect = null),
-        (returnFiber.effectTag |= 512));
+        (returnFiber.effectTag |= 1024));
     }
     if (null !== siblingFiber) return siblingFiber;
     if (null !== returnFiber) workInProgress = returnFiber;
@@ -5403,23 +5897,22 @@ function performUnitOfWork(workInProgress) {
     0 > workInProgress.actualStartTime &&
       (workInProgress.actualStartTime = now$1()));
   current$$1 = beginWork(current$$1, workInProgress, nextRenderExpirationTime);
+  workInProgress.memoizedProps = workInProgress.pendingProps;
   workInProgress.mode & 4 &&
     stopProfilerTimerIfRunningAndRecordDelta(workInProgress, !0);
   null === current$$1 && (current$$1 = completeUnitOfWork(workInProgress));
   ReactCurrentOwner$2.current = null;
   return current$$1;
 }
-function renderRoot(root, isYieldy, isExpired) {
+function renderRoot(root, isYieldy) {
   invariant(
     !isWorking,
     "renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
+  flushPassiveEffects();
   isWorking = !0;
-  ReactCurrentOwner$2.currentDispatcher = Dispatcher;
-  var expirationTime = root.nextExpirationTimeToWorkOn,
-    prevInteractions = null;
-  prevInteractions = tracking.__interactionsRef.current;
-  tracking.__interactionsRef.current = root.memoizedInteractions;
+  ReactCurrentOwner$2.currentDispatcher = DispatcherWithoutHooks;
+  var expirationTime = root.nextExpirationTimeToWorkOn;
   if (
     expirationTime !== nextRenderExpirationTime ||
     root !== nextRoot ||
@@ -5439,14 +5932,14 @@ function renderRoot(root, isYieldy, isExpired) {
       scheduledInteractions,
       scheduledExpirationTime
     ) {
-      scheduledExpirationTime <= expirationTime &&
+      scheduledExpirationTime >= expirationTime &&
         scheduledInteractions.forEach(function(interaction) {
           return interactions.add(interaction);
         });
     });
     root.memoizedInteractions = interactions;
     if (0 < interactions.size) {
-      var subscriber = tracking.__subscriberRef.current;
+      var subscriber = tracing.__subscriberRef.current;
       if (null !== subscriber) {
         var threadID = 1e3 * expirationTime + root.interactionThreadID;
         try {
@@ -5458,241 +5951,243 @@ function renderRoot(root, isYieldy, isExpired) {
       }
     }
   }
-  subscriber = !1;
+  subscriber = null;
+  subscriber = tracing.__interactionsRef.current;
+  tracing.__interactionsRef.current = root.memoizedInteractions;
+  threadID = !1;
   do {
     try {
       if (isYieldy)
-        for (; null !== nextUnitOfWork && !shouldYield(); )
+        for (; null !== nextUnitOfWork && !shouldYieldToRenderer(); )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
       else
         for (; null !== nextUnitOfWork; )
           nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
     } catch (thrownValue) {
-      if (null === nextUnitOfWork)
-        (subscriber = !0), onUncaughtError(thrownValue);
+      if (
+        ((lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = null),
+        null === nextUnitOfWork)
+      )
+        (threadID = !0), onUncaughtError(thrownValue);
       else {
+        nextUnitOfWork.mode & 4 &&
+          stopProfilerTimerIfRunningAndRecordDelta(nextUnitOfWork, !0);
         invariant(
           null !== nextUnitOfWork,
           "Failed to replay rendering after an error. This is likely caused by a bug in React. Please file an issue with a reproducing case to help us find it."
         );
-        threadID = nextUnitOfWork;
-        var returnFiber = threadID.return;
-        if (null === returnFiber)
-          (subscriber = !0), onUncaughtError(thrownValue);
+        var sourceFiber = nextUnitOfWork,
+          returnFiber = sourceFiber.return;
+        if (null === returnFiber) (threadID = !0), onUncaughtError(thrownValue);
         else {
           throwException(
             root,
             returnFiber,
-            threadID,
+            sourceFiber,
             thrownValue,
             nextRenderExpirationTime
           );
-          nextUnitOfWork = completeUnitOfWork(threadID);
+          nextUnitOfWork = completeUnitOfWork(sourceFiber);
           continue;
         }
       }
     }
     break;
   } while (1);
-  tracking.__interactionsRef.current = prevInteractions;
+  tracing.__interactionsRef.current = subscriber;
   isWorking = !1;
   lastContextWithAllBitsObserved = lastContextDependency = currentlyRenderingFiber = ReactCurrentOwner$2.currentDispatcher = null;
-  if (subscriber) (nextRoot = null), (root.finishedWork = null);
+  if (threadID) (nextRoot = null), (root.finishedWork = null);
   else if (null !== nextUnitOfWork) root.finishedWork = null;
   else {
-    isYieldy = root.current.alternate;
+    subscriber = root.current.alternate;
     invariant(
-      null !== isYieldy,
+      null !== subscriber,
       "Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."
     );
     nextRoot = null;
     if (nextRenderDidError) {
       if (hasLowerPriorityWork(root, expirationTime)) {
         markSuspendedPriorityLevel(root, expirationTime);
-        onSuspend(root, isYieldy, expirationTime, root.expirationTime, -1);
+        onSuspend(root, subscriber, expirationTime, root.expirationTime, -1);
         return;
       }
-      if (!root.didError && !isExpired) {
+      if (!root.didError && isYieldy) {
         root.didError = !0;
-        isExpired = root.nextExpirationTimeToWorkOn = expirationTime;
-        prevInteractions = root.expirationTime = 1;
-        onSuspend(root, isYieldy, isExpired, prevInteractions, -1);
+        isYieldy = root.nextExpirationTimeToWorkOn = expirationTime;
+        threadID = root.expirationTime = 1073741823;
+        onSuspend(root, subscriber, isYieldy, threadID, -1);
         return;
       }
     }
-    onComplete(root, isYieldy, expirationTime);
+    isYieldy && -1 !== nextLatestAbsoluteTimeoutMs
+      ? (markSuspendedPriorityLevel(root, expirationTime),
+        (isYieldy =
+          10 *
+          (1073741822 -
+            findEarliestOutstandingPriorityLevel(root, expirationTime))),
+        isYieldy < nextLatestAbsoluteTimeoutMs &&
+          (nextLatestAbsoluteTimeoutMs = isYieldy),
+        (isYieldy = 10 * (1073741822 - requestCurrentTime())),
+        (isYieldy = nextLatestAbsoluteTimeoutMs - isYieldy),
+        onSuspend(
+          root,
+          subscriber,
+          expirationTime,
+          root.expirationTime,
+          0 > isYieldy ? 0 : isYieldy
+        ))
+      : onComplete(root, subscriber, expirationTime);
   }
 }
-function captureCommitPhaseError(fiber, error) {
-  var JSCompiler_inline_result;
-  a: {
-    invariant(
-      !isWorking || isCommitting$1,
-      "dispatch: Cannot dispatch during the render phase."
-    );
-    for (
-      JSCompiler_inline_result = fiber.return;
-      null !== JSCompiler_inline_result;
-
-    ) {
-      switch (JSCompiler_inline_result.tag) {
-        case 2:
-        case 3:
-          var instance = JSCompiler_inline_result.stateNode;
-          if (
-            "function" ===
-              typeof JSCompiler_inline_result.type.getDerivedStateFromCatch ||
-            ("function" === typeof instance.componentDidCatch &&
-              (null === legacyErrorBoundariesThatAlreadyFailed ||
-                !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
-          ) {
-            fiber = createCapturedValue(error, fiber);
-            fiber = createClassErrorUpdate(JSCompiler_inline_result, fiber, 1);
-            enqueueUpdate(JSCompiler_inline_result, fiber);
-            scheduleWork(JSCompiler_inline_result, 1);
-            JSCompiler_inline_result = void 0;
-            break a;
-          }
-          break;
-        case 5:
-          fiber = createCapturedValue(error, fiber);
-          fiber = createRootErrorUpdate(JSCompiler_inline_result, fiber, 1);
-          enqueueUpdate(JSCompiler_inline_result, fiber);
-          scheduleWork(JSCompiler_inline_result, 1);
-          JSCompiler_inline_result = void 0;
-          break a;
-      }
-      JSCompiler_inline_result = JSCompiler_inline_result.return;
+function captureCommitPhaseError(sourceFiber, value) {
+  for (var fiber = sourceFiber.return; null !== fiber; ) {
+    switch (fiber.tag) {
+      case 1:
+        var instance = fiber.stateNode;
+        if (
+          "function" === typeof fiber.type.getDerivedStateFromError ||
+          ("function" === typeof instance.componentDidCatch &&
+            (null === legacyErrorBoundariesThatAlreadyFailed ||
+              !legacyErrorBoundariesThatAlreadyFailed.has(instance)))
+        ) {
+          sourceFiber = createCapturedValue(value, sourceFiber);
+          sourceFiber = createClassErrorUpdate(fiber, sourceFiber, 1073741823);
+          enqueueUpdate(fiber, sourceFiber);
+          scheduleWork(fiber, 1073741823);
+          return;
+        }
+        break;
+      case 3:
+        sourceFiber = createCapturedValue(value, sourceFiber);
+        sourceFiber = createRootErrorUpdate(fiber, sourceFiber, 1073741823);
+        enqueueUpdate(fiber, sourceFiber);
+        scheduleWork(fiber, 1073741823);
+        return;
     }
-    5 === fiber.tag &&
-      ((JSCompiler_inline_result = createCapturedValue(error, fiber)),
-      (JSCompiler_inline_result = createRootErrorUpdate(
-        fiber,
-        JSCompiler_inline_result,
-        1
-      )),
-      enqueueUpdate(fiber, JSCompiler_inline_result),
-      scheduleWork(fiber, 1));
-    JSCompiler_inline_result = void 0;
+    fiber = fiber.return;
   }
-  return JSCompiler_inline_result;
+  3 === sourceFiber.tag &&
+    ((fiber = createCapturedValue(value, sourceFiber)),
+    (fiber = createRootErrorUpdate(sourceFiber, fiber, 1073741823)),
+    enqueueUpdate(sourceFiber, fiber),
+    scheduleWork(sourceFiber, 1073741823));
 }
 function computeExpirationForFiber(currentTime, fiber) {
   isWorking
-    ? (currentTime = isCommitting$1 ? 1 : nextRenderExpirationTime)
+    ? (currentTime = isCommitting$1 ? 1073741823 : nextRenderExpirationTime)
     : fiber.mode & 1
       ? ((currentTime = isBatchingInteractiveUpdates
-          ? 2 + 10 * ((((currentTime - 2 + 15) / 10) | 0) + 1)
-          : 2 + 25 * ((((currentTime - 2 + 500) / 25) | 0) + 1)),
+          ? 1073741822 - 10 * ((((1073741822 - currentTime + 15) / 10) | 0) + 1)
+          : 1073741822 -
+            25 * ((((1073741822 - currentTime + 500) / 25) | 0) + 1)),
         null !== nextRoot &&
           currentTime === nextRenderExpirationTime &&
-          (currentTime += 1))
-      : (currentTime = 1);
+          --currentTime)
+      : (currentTime = 1073741823);
   isBatchingInteractiveUpdates &&
     (0 === lowestPriorityPendingInteractiveExpirationTime ||
-      currentTime > lowestPriorityPendingInteractiveExpirationTime) &&
+      currentTime < lowestPriorityPendingInteractiveExpirationTime) &&
     (lowestPriorityPendingInteractiveExpirationTime = currentTime);
   return currentTime;
 }
-function storeInteractionsForExpirationTime(
-  root,
-  expirationTime,
-  updateInteractionCounts
-) {
-  var interactions = tracking.__interactionsRef.current;
-  if (0 < interactions.size) {
-    var pendingInteractions = root.pendingInteractionMap.get(expirationTime);
+function retrySuspendedRoot(root, boundaryFiber, sourceFiber, suspendedTime) {
+  var retryTime = root.earliestSuspendedTime;
+  var latestSuspendedTime = root.latestSuspendedTime;
+  if (
+    0 !== retryTime &&
+    suspendedTime <= retryTime &&
+    suspendedTime >= latestSuspendedTime
+  ) {
+    latestSuspendedTime = retryTime = suspendedTime;
+    root.didError = !1;
+    var latestPingedTime = root.latestPingedTime;
+    if (0 === latestPingedTime || latestPingedTime > latestSuspendedTime)
+      root.latestPingedTime = latestSuspendedTime;
+    findNextExpirationTimeToWorkOn(latestSuspendedTime, root);
+  } else
+    (retryTime = requestCurrentTime()),
+      (retryTime = computeExpirationForFiber(retryTime, boundaryFiber)),
+      markPendingPriorityLevel(root, retryTime);
+  0 !== (boundaryFiber.mode & 1) &&
+    root === nextRoot &&
+    nextRenderExpirationTime === suspendedTime &&
+    (nextRoot = null);
+  scheduleWorkToRoot(boundaryFiber, retryTime);
+  0 === (boundaryFiber.mode & 1) &&
+    (scheduleWorkToRoot(sourceFiber, retryTime),
+    1 === sourceFiber.tag &&
+      null !== sourceFiber.stateNode &&
+      ((boundaryFiber = createUpdate(retryTime)),
+      (boundaryFiber.tag = 2),
+      enqueueUpdate(sourceFiber, boundaryFiber)));
+  sourceFiber = root.expirationTime;
+  0 !== sourceFiber && requestWork(root, sourceFiber);
+}
+function scheduleWorkToRoot(fiber, expirationTime) {
+  fiber.expirationTime < expirationTime &&
+    (fiber.expirationTime = expirationTime);
+  var alternate = fiber.alternate;
+  null !== alternate &&
+    alternate.expirationTime < expirationTime &&
+    (alternate.expirationTime = expirationTime);
+  var node = fiber.return,
+    root = null;
+  if (null === node && 3 === fiber.tag) root = fiber.stateNode;
+  else
+    for (; null !== node; ) {
+      alternate = node.alternate;
+      node.childExpirationTime < expirationTime &&
+        (node.childExpirationTime = expirationTime);
+      null !== alternate &&
+        alternate.childExpirationTime < expirationTime &&
+        (alternate.childExpirationTime = expirationTime);
+      if (null === node.return && 3 === node.tag) {
+        root = node.stateNode;
+        break;
+      }
+      node = node.return;
+    }
+  if (
+    null !== root &&
+    ((fiber = tracing.__interactionsRef.current), 0 < fiber.size)
+  ) {
+    alternate = root.pendingInteractionMap;
+    var pendingInteractions = alternate.get(expirationTime);
     null != pendingInteractions
-      ? interactions.forEach(function(interaction) {
-          updateInteractionCounts &&
-            !pendingInteractions.has(interaction) &&
-            interaction.__count++;
+      ? fiber.forEach(function(interaction) {
+          pendingInteractions.has(interaction) || interaction.__count++;
           pendingInteractions.add(interaction);
         })
-      : (root.pendingInteractionMap.set(expirationTime, new Set(interactions)),
-        updateInteractionCounts &&
-          interactions.forEach(function(interaction) {
-            interaction.__count++;
-          }));
-    var subscriber = tracking.__subscriberRef.current;
-    if (null !== subscriber)
-      subscriber.onWorkScheduled(
-        interactions,
+      : (alternate.set(expirationTime, new Set(fiber)),
+        fiber.forEach(function(interaction) {
+          interaction.__count++;
+        }));
+    alternate = tracing.__subscriberRef.current;
+    if (null !== alternate)
+      alternate.onWorkScheduled(
+        fiber,
         1e3 * expirationTime + root.interactionThreadID
       );
   }
+  return root;
 }
 function scheduleWork(fiber, expirationTime) {
-  a: {
-    if (0 === fiber.expirationTime || fiber.expirationTime > expirationTime)
-      fiber.expirationTime = expirationTime;
-    var alternate = fiber.alternate;
-    null !== alternate &&
-      (0 === alternate.expirationTime ||
-        alternate.expirationTime > expirationTime) &&
-      (alternate.expirationTime = expirationTime);
-    var node = fiber.return;
-    if (null === node && 5 === fiber.tag) fiber = fiber.stateNode;
-    else {
-      for (; null !== node; ) {
-        alternate = node.alternate;
-        if (
-          0 === node.childExpirationTime ||
-          node.childExpirationTime > expirationTime
-        )
-          node.childExpirationTime = expirationTime;
-        null !== alternate &&
-          (0 === alternate.childExpirationTime ||
-            alternate.childExpirationTime > expirationTime) &&
-          (alternate.childExpirationTime = expirationTime);
-        if (null === node.return && 5 === node.tag) {
-          fiber = node.stateNode;
-          break a;
-        }
-        node = node.return;
-      }
-      fiber = null;
-    }
-  }
-  if (null !== fiber) {
-    storeInteractionsForExpirationTime(fiber, expirationTime, !0);
-    !isWorking &&
+  fiber = scheduleWorkToRoot(fiber, expirationTime);
+  null !== fiber &&
+    (!isWorking &&
       0 !== nextRenderExpirationTime &&
-      expirationTime < nextRenderExpirationTime &&
-      resetStack();
-    markPendingPriorityLevel(fiber, expirationTime);
-    if (!isWorking || isCommitting$1 || nextRoot !== fiber) {
-      expirationTime = fiber;
-      fiber = fiber.expirationTime;
-      if (null === expirationTime.nextScheduledRoot)
-        (expirationTime.expirationTime = fiber),
-          null === lastScheduledRoot
-            ? ((firstScheduledRoot = lastScheduledRoot = expirationTime),
-              (expirationTime.nextScheduledRoot = expirationTime))
-            : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = expirationTime),
-              (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot));
-      else if (
-        ((alternate = expirationTime.expirationTime),
-        0 === alternate || fiber < alternate)
-      )
-        expirationTime.expirationTime = fiber;
-      isRendering ||
-        (isBatchingUpdates
-          ? isUnbatchingUpdates &&
-            ((nextFlushedRoot = expirationTime),
-            (nextFlushedExpirationTime = 1),
-            performWorkOnRoot(expirationTime, 1, !0))
-          : 1 === fiber
-            ? performWork(1, null)
-            : scheduleCallbackWithExpirationTime(expirationTime, fiber));
-    }
+      expirationTime > nextRenderExpirationTime &&
+      resetStack(),
+    markPendingPriorityLevel(fiber, expirationTime),
+    (isWorking && !isCommitting$1 && nextRoot === fiber) ||
+      requestWork(fiber, fiber.expirationTime),
     nestedUpdateCount > NESTED_UPDATE_LIMIT &&
       ((nestedUpdateCount = 0),
       invariant(
         !1,
         "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops."
-      ));
-  }
+      )));
 }
 var firstScheduledRoot = null,
   lastScheduledRoot = null,
@@ -5702,27 +6197,25 @@ var firstScheduledRoot = null,
   nextFlushedRoot = null,
   nextFlushedExpirationTime = 0,
   lowestPriorityPendingInteractiveExpirationTime = 0,
-  deadlineDidExpire = !1,
   hasUnhandledError = !1,
   unhandledError = null,
-  deadline = null,
   isBatchingUpdates = !1,
   isUnbatchingUpdates = !1,
   isBatchingInteractiveUpdates = !1,
   completedBatches = null,
   originalStartTimeMs = now$1(),
-  currentRendererTime = ((originalStartTimeMs / 10) | 0) + 2,
+  currentRendererTime = 1073741822 - ((originalStartTimeMs / 10) | 0),
   currentSchedulerTime = currentRendererTime,
   NESTED_UPDATE_LIMIT = 50,
   nestedUpdateCount = 0,
-  lastCommittedRootDuringThisBatch = null,
-  timeHeuristicForUnitOfWork = 1;
+  lastCommittedRootDuringThisBatch = null;
 function recomputeCurrentRendererTime() {
-  currentRendererTime = (((now$1() - originalStartTimeMs) / 10) | 0) + 2;
+  currentRendererTime =
+    1073741822 - (((now$1() - originalStartTimeMs) / 10) | 0);
 }
 function scheduleCallbackWithExpirationTime(root, expirationTime) {
   if (0 !== callbackExpirationTime) {
-    if (expirationTime > callbackExpirationTime) return;
+    if (expirationTime < callbackExpirationTime) return;
     null !== callbackID &&
       ((root = callbackID), (scheduledCallback = null), clearTimeout(root));
   }
@@ -5743,13 +6236,29 @@ function onSuspend(
   msUntilTimeout
 ) {
   root.expirationTime = rootExpirationTime;
-  0 < msUntilTimeout &&
-    (root.timeoutHandle = scheduleTimeout(
-      onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
-      msUntilTimeout
-    ));
+  0 !== msUntilTimeout || shouldYieldToRenderer()
+    ? 0 < msUntilTimeout &&
+      (root.timeoutHandle = scheduleTimeout(
+        onTimeout.bind(null, root, finishedWork, suspendedExpirationTime),
+        msUntilTimeout
+      ))
+    : ((root.pendingCommitExpirationTime = suspendedExpirationTime),
+      (root.finishedWork = finishedWork));
+}
+function onTimeout(root, finishedWork, suspendedExpirationTime) {
+  root.pendingCommitExpirationTime = suspendedExpirationTime;
+  root.finishedWork = finishedWork;
+  recomputeCurrentRendererTime();
+  currentSchedulerTime = currentRendererTime;
+  invariant(
+    !isRendering,
+    "work.commit(): Cannot commit while already rendering. This likely means you attempted to commit from inside a lifecycle method."
+  );
+  nextFlushedRoot = root;
+  nextFlushedExpirationTime = suspendedExpirationTime;
+  performWorkOnRoot(root, suspendedExpirationTime, !1);
+  performWork(1073741823, !1);
 }
-function onTimeout() {}
 function onCommit(root, expirationTime) {
   root.expirationTime = expirationTime;
   root.finishedWork = null;
@@ -5757,14 +6266,31 @@ function onCommit(root, expirationTime) {
 function requestCurrentTime() {
   if (isRendering) return currentSchedulerTime;
   findHighestPriorityRoot();
-  if (
-    0 === nextFlushedExpirationTime ||
-    1073741823 === nextFlushedExpirationTime
-  )
+  if (0 === nextFlushedExpirationTime || 1 === nextFlushedExpirationTime)
     recomputeCurrentRendererTime(),
       (currentSchedulerTime = currentRendererTime);
   return currentSchedulerTime;
 }
+function requestWork(root, expirationTime) {
+  null === root.nextScheduledRoot
+    ? ((root.expirationTime = expirationTime),
+      null === lastScheduledRoot
+        ? ((firstScheduledRoot = lastScheduledRoot = root),
+          (root.nextScheduledRoot = root))
+        : ((lastScheduledRoot = lastScheduledRoot.nextScheduledRoot = root),
+          (lastScheduledRoot.nextScheduledRoot = firstScheduledRoot)))
+    : expirationTime > root.expirationTime &&
+      (root.expirationTime = expirationTime);
+  isRendering ||
+    (isBatchingUpdates
+      ? isUnbatchingUpdates &&
+        ((nextFlushedRoot = root),
+        (nextFlushedExpirationTime = 1073741823),
+        performWorkOnRoot(root, 1073741823, !1))
+      : 1073741823 === expirationTime
+        ? performWork(1073741823, !1)
+        : scheduleCallbackWithExpirationTime(root, expirationTime));
+}
 function findHighestPriorityRoot() {
   var highestPriorityWork = 0,
     highestPriorityRoot = null;
@@ -5798,14 +6324,11 @@ function findHighestPriorityRoot() {
             (root.nextScheduledRoot = null);
         root = previousScheduledRoot.nextScheduledRoot;
       } else {
-        if (
-          0 === highestPriorityWork ||
-          remainingExpirationTime < highestPriorityWork
-        )
-          (highestPriorityWork = remainingExpirationTime),
-            (highestPriorityRoot = root);
+        remainingExpirationTime > highestPriorityWork &&
+          ((highestPriorityWork = remainingExpirationTime),
+          (highestPriorityRoot = root));
         if (root === lastScheduledRoot) break;
-        if (1 === highestPriorityWork) break;
+        if (1073741823 === highestPriorityWork) break;
         previousScheduledRoot = root;
         root = root.nextScheduledRoot;
       }
@@ -5813,38 +6336,44 @@ function findHighestPriorityRoot() {
   nextFlushedRoot = highestPriorityRoot;
   nextFlushedExpirationTime = highestPriorityWork;
 }
-function performAsyncWork(dl) {
-  if (dl.didTimeout && null !== firstScheduledRoot) {
-    recomputeCurrentRendererTime();
-    var root = firstScheduledRoot;
-    do {
-      var expirationTime = root.expirationTime;
-      0 !== expirationTime &&
-        currentRendererTime >= expirationTime &&
-        (root.nextExpirationTimeToWorkOn = currentRendererTime);
-      root = root.nextScheduledRoot;
-    } while (root !== firstScheduledRoot);
+var didYield = !1;
+function shouldYieldToRenderer() {
+  return didYield ? !0 : frameDeadline <= now$1() ? (didYield = !0) : !1;
+}
+function performAsyncWork() {
+  try {
+    if (!shouldYieldToRenderer() && null !== firstScheduledRoot) {
+      recomputeCurrentRendererTime();
+      var root = firstScheduledRoot;
+      do {
+        var expirationTime = root.expirationTime;
+        0 !== expirationTime &&
+          currentRendererTime <= expirationTime &&
+          (root.nextExpirationTimeToWorkOn = currentRendererTime);
+        root = root.nextScheduledRoot;
+      } while (root !== firstScheduledRoot);
+    }
+    performWork(0, !0);
+  } finally {
+    didYield = !1;
   }
-  performWork(0, dl);
 }
-function performWork(minExpirationTime, dl) {
-  deadline = dl;
+function performWork(minExpirationTime, isYieldy) {
   findHighestPriorityRoot();
-  if (null !== deadline)
+  if (isYieldy)
     for (
       recomputeCurrentRendererTime(),
         currentSchedulerTime = currentRendererTime;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime) &&
-      (!deadlineDidExpire || currentRendererTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime &&
+      !(didYield && currentRendererTime > nextFlushedExpirationTime);
 
     )
       performWorkOnRoot(
         nextFlushedRoot,
         nextFlushedExpirationTime,
-        currentRendererTime >= nextFlushedExpirationTime
+        currentRendererTime > nextFlushedExpirationTime
       ),
         findHighestPriorityRoot(),
         recomputeCurrentRendererTime(),
@@ -5854,29 +6383,28 @@ function performWork(minExpirationTime, dl) {
       ;
       null !== nextFlushedRoot &&
       0 !== nextFlushedExpirationTime &&
-      (0 === minExpirationTime ||
-        minExpirationTime >= nextFlushedExpirationTime);
+      minExpirationTime <= nextFlushedExpirationTime;
 
     )
-      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !0),
+      performWorkOnRoot(nextFlushedRoot, nextFlushedExpirationTime, !1),
         findHighestPriorityRoot();
-  null !== deadline && ((callbackExpirationTime = 0), (callbackID = null));
+  isYieldy && ((callbackExpirationTime = 0), (callbackID = null));
   0 !== nextFlushedExpirationTime &&
     scheduleCallbackWithExpirationTime(
       nextFlushedRoot,
       nextFlushedExpirationTime
     );
-  deadline = null;
-  deadlineDidExpire = !1;
   nestedUpdateCount = 0;
   lastCommittedRootDuringThisBatch = null;
   if (null !== completedBatches)
     for (
-      minExpirationTime = completedBatches, completedBatches = null, dl = 0;
-      dl < minExpirationTime.length;
-      dl++
+      minExpirationTime = completedBatches,
+        completedBatches = null,
+        isYieldy = 0;
+      isYieldy < minExpirationTime.length;
+      isYieldy++
     ) {
-      var batch = minExpirationTime[dl];
+      var batch = minExpirationTime[isYieldy];
       try {
         batch._onComplete();
       } catch (error) {
@@ -5890,39 +6418,45 @@ function performWork(minExpirationTime, dl) {
     (hasUnhandledError = !1),
     minExpirationTime);
 }
-function performWorkOnRoot(root, expirationTime, isExpired) {
+function performWorkOnRoot(root, expirationTime, isYieldy) {
   invariant(
     !isRendering,
     "performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."
   );
   isRendering = !0;
-  if (null === deadline || isExpired) {
-    var finishedWork = root.finishedWork;
-    null !== finishedWork
-      ? completeRoot(root, finishedWork, expirationTime)
+  if (isYieldy) {
+    var _finishedWork = root.finishedWork;
+    null !== _finishedWork
+      ? completeRoot(root, _finishedWork, expirationTime)
       : ((root.finishedWork = null),
-        renderRoot(root, !1, isExpired),
-        (finishedWork = root.finishedWork),
-        null !== finishedWork &&
-          completeRoot(root, finishedWork, expirationTime));
+        (_finishedWork = root.timeoutHandle),
+        -1 !== _finishedWork &&
+          ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+        renderRoot(root, isYieldy),
+        (_finishedWork = root.finishedWork),
+        null !== _finishedWork &&
+          (shouldYieldToRenderer()
+            ? (root.finishedWork = _finishedWork)
+            : completeRoot(root, _finishedWork, expirationTime)));
   } else
-    (finishedWork = root.finishedWork),
-      null !== finishedWork
-        ? completeRoot(root, finishedWork, expirationTime)
+    (_finishedWork = root.finishedWork),
+      null !== _finishedWork
+        ? completeRoot(root, _finishedWork, expirationTime)
         : ((root.finishedWork = null),
-          renderRoot(root, !0, isExpired),
-          (finishedWork = root.finishedWork),
-          null !== finishedWork &&
-            (shouldYield()
-              ? (root.finishedWork = finishedWork)
-              : completeRoot(root, finishedWork, expirationTime)));
+          (_finishedWork = root.timeoutHandle),
+          -1 !== _finishedWork &&
+            ((root.timeoutHandle = -1), cancelTimeout(_finishedWork)),
+          renderRoot(root, isYieldy),
+          (_finishedWork = root.finishedWork),
+          null !== _finishedWork &&
+            completeRoot(root, _finishedWork, expirationTime));
   isRendering = !1;
 }
 function completeRoot(root, finishedWork, expirationTime) {
   var firstBatch = root.firstBatch;
   if (
     null !== firstBatch &&
-    firstBatch._expirationTime <= expirationTime &&
+    firstBatch._expirationTime >= expirationTime &&
     (null === completedBatches
       ? (completedBatches = [firstBatch])
       : completedBatches.push(firstBatch),
@@ -5938,13 +6472,6 @@ function completeRoot(root, finishedWork, expirationTime) {
     : ((lastCommittedRootDuringThisBatch = root), (nestedUpdateCount = 0));
   commitRoot(root, finishedWork);
 }
-function shouldYield() {
-  return deadlineDidExpire
-    ? !0
-    : null === deadline || deadline.timeRemaining() > timeHeuristicForUnitOfWork
-      ? !1
-      : (deadlineDidExpire = !0);
-}
 function onUncaughtError(error) {
   invariant(
     null !== nextFlushedRoot,
@@ -5953,56 +6480,7 @@ function onUncaughtError(error) {
   nextFlushedRoot.expirationTime = 0;
   hasUnhandledError || ((hasUnhandledError = !0), (unhandledError = error));
 }
-function getContextForSubtree(parentComponent) {
-  if (!parentComponent) return emptyContextObject;
-  parentComponent = parentComponent._reactInternalFiber;
-  a: {
-    invariant(
-      2 === isFiberMountedImpl(parentComponent) &&
-        (2 === parentComponent.tag || 3 === parentComponent.tag),
-      "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
-    );
-    var parentContext = parentComponent;
-    do {
-      switch (parentContext.tag) {
-        case 5:
-          parentContext = parentContext.stateNode.context;
-          break a;
-        case 2:
-          if (isContextProvider(parentContext.type)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-          break;
-        case 3:
-          if (isContextProvider(parentContext.type._reactResult)) {
-            parentContext =
-              parentContext.stateNode.__reactInternalMemoizedMergedChildContext;
-            break a;
-          }
-      }
-      parentContext = parentContext.return;
-    } while (null !== parentContext);
-    invariant(
-      !1,
-      "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
-    );
-    parentContext = void 0;
-  }
-  if (2 === parentComponent.tag) {
-    var Component = parentComponent.type;
-    if (isContextProvider(Component))
-      return processChildContext(parentComponent, Component, parentContext);
-  } else if (
-    3 === parentComponent.tag &&
-    ((Component = parentComponent.type._reactResult),
-    isContextProvider(Component))
-  )
-    return processChildContext(parentComponent, Component, parentContext);
-  return parentContext;
-}
-function findHostInstance$1(component) {
+function findHostInstance(component) {
   var fiber = component._reactInternalFiber;
   void 0 === fiber &&
     ("function" === typeof component.render
@@ -6020,7 +6498,48 @@ function updateContainer(element, container, parentComponent, callback) {
     currentTime = requestCurrentTime();
   current$$1 = computeExpirationForFiber(currentTime, current$$1);
   currentTime = container.current;
-  parentComponent = getContextForSubtree(parentComponent);
+  a: if (parentComponent) {
+    parentComponent = parentComponent._reactInternalFiber;
+    b: {
+      invariant(
+        2 === isFiberMountedImpl(parentComponent) && 1 === parentComponent.tag,
+        "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue."
+      );
+      var parentContext = parentComponent;
+      do {
+        switch (parentContext.tag) {
+          case 3:
+            parentContext = parentContext.stateNode.context;
+            break b;
+          case 1:
+            if (isContextProvider(parentContext.type)) {
+              parentContext =
+                parentContext.stateNode
+                  .__reactInternalMemoizedMergedChildContext;
+              break b;
+            }
+        }
+        parentContext = parentContext.return;
+      } while (null !== parentContext);
+      invariant(
+        !1,
+        "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue."
+      );
+      parentContext = void 0;
+    }
+    if (1 === parentComponent.tag) {
+      var Component = parentComponent.type;
+      if (isContextProvider(Component)) {
+        parentComponent = processChildContext(
+          parentComponent,
+          Component,
+          parentContext
+        );
+        break a;
+      }
+    }
+    parentComponent = parentContext;
+  } else parentComponent = emptyContextObject;
   null === container.context
     ? (container.context = parentComponent)
     : (container.pendingContext = parentComponent);
@@ -6029,6 +6548,7 @@ function updateContainer(element, container, parentComponent, callback) {
   callback.payload = { element: element };
   container = void 0 === container ? null : container;
   null !== container && (callback.callback = container);
+  flushPassiveEffects();
   enqueueUpdate(currentTime, callback);
   scheduleWork(currentTime, current$$1);
   return current$$1;
@@ -6073,7 +6593,7 @@ function findNodeHandle(componentOrHandle) {
   if (componentOrHandle._nativeTag) return componentOrHandle._nativeTag;
   if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag)
     return componentOrHandle.canonical._nativeTag;
-  componentOrHandle = findHostInstance$1(componentOrHandle);
+  componentOrHandle = findHostInstance(componentOrHandle);
   return null == componentOrHandle
     ? componentOrHandle
     : componentOrHandle.canonical
@@ -6088,13 +6608,13 @@ _batchedUpdatesImpl = function(fn, a) {
   } finally {
     (isBatchingUpdates = previousIsBatchingUpdates) ||
       isRendering ||
-      performWork(1, null);
+      performWork(1073741823, !1);
   }
 };
 _flushInteractiveUpdatesImpl = function() {
   isRendering ||
     0 === lowestPriorityPendingInteractiveExpirationTime ||
-    (performWork(lowestPriorityPendingInteractiveExpirationTime, null),
+    (performWork(lowestPriorityPendingInteractiveExpirationTime, !1),
     (lowestPriorityPendingInteractiveExpirationTime = 0));
 };
 var roots = new Map(),
@@ -6169,14 +6689,14 @@ var roots = new Map(),
         };
         return ReactNativeComponent;
       })(React.Component);
-    })(findNodeHandle, findHostInstance$1),
+    })(findNodeHandle, findHostInstance),
     findNodeHandle: findNodeHandle,
     render: function(element, containerTag, callback) {
       var root = roots.get(containerTag);
       if (!root) {
         root = 0;
         isDevToolsPresent && (root |= 4);
-        root = new FiberNode(5, null, null, root);
+        root = createFiber(3, null, null, root);
         var root$jscomp$0 = {
           current: root,
           containerInfo: containerTag,
@@ -6197,7 +6717,7 @@ var roots = new Map(),
           expirationTime: 0,
           firstBatch: null,
           nextScheduledRoot: null,
-          interactionThreadID: tracking.unstable_getThreadID(),
+          interactionThreadID: tracing.unstable_getThreadID(),
           memoizedInteractions: new Set(),
           pendingInteractionMap: new Map()
         };
@@ -6207,7 +6727,7 @@ var roots = new Map(),
       updateContainer(element, root, null, callback);
       a: if (((element = root.current), element.child))
         switch (element.child.tag) {
-          case 7:
+          case 5:
             element = element.child.stateNode;
             break a;
           default:
@@ -6287,7 +6807,7 @@ var roots = new Map(),
             TextInputState.blurTextInput(findNodeHandle(this));
           }
         };
-      })(findNodeHandle, findHostInstance$1),
+      })(findNodeHandle, findHostInstance),
       computeComponentStackForErrorReporting: function(reactTag) {
         return (reactTag = getInstanceFromTag(reactTag))
           ? getStackByFiberInDevAndProd(reactTag)
@@ -6314,7 +6834,7 @@ var roots = new Map(),
   findFiberByHostInstance: getInstanceFromTag,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
   bundleType: 0,
-  version: "16.5.0",
+  version: "16.6.1",
   rendererPackageName: "react-native-renderer"
 });
 var ReactNativeRenderer$2 = { default: ReactNativeRenderer },
diff --git a/Libraries/Renderer/shims/ReactNativeTypes.js b/Libraries/Renderer/shims/ReactNativeTypes.js
index 8daf4fe7f86f7a..9915da4672e727 100644
--- a/Libraries/Renderer/shims/ReactNativeTypes.js
+++ b/Libraries/Renderer/shims/ReactNativeTypes.js
@@ -36,122 +36,122 @@ export type MeasureLayoutOnSuccessCallback = (
 type AttributeType =
   | true
   | $ReadOnly<{|
-      diff: ?<T>(arg1: T, arg2: T) => boolean,
-      process: ?(arg1: any) => any,
-    |}>;
+    diff?: <T>(arg1: T, arg2: T) => boolean,
+    process?: (arg1: any) => any,
+  |}>;
 
 export type AttributeConfiguration<
-  TProps = string,
-  TStyleProps = string,
+        TProps = string,
+      TStyleProps = string,
 > = $ReadOnly<{
   [propName: TProps]: AttributeType,
   style: $ReadOnly<{
     [propName: TStyleProps]: AttributeType,
-  }>,
-}>;
-
+    }>,
+  }>;
+  
 export type ReactNativeBaseComponentViewConfig<
-  TProps = string,
-  TStyleProps = string,
+        TProps = string,
+      TStyleProps = string,
 > = $ReadOnly<{|
-  baseModuleName?: string,
-  bubblingEventTypes?: $ReadOnly<{
-    [eventName: string]: $ReadOnly<{|
-      phasedRegistrationNames: $ReadOnly<{|
-        captured: string,
-        bubbled: string,
-      |}>,
+        baseModuleName?: string,
+        bubblingEventTypes?: $ReadOnly<{
+          [eventName: string]: $ReadOnly<{|
+            phasedRegistrationNames: $ReadOnly<{|
+              captured: string,
+      bubbled: string,
     |}>,
-  }>,
+  |}>,
+}>,
   Commands?: $ReadOnly<{
     [commandName: string]: number,
-  }>,
+    }>,
   directEventTypes?: $ReadOnly<{
     [eventName: string]: $ReadOnly<{|
-      registrationName: string,
+        registrationName: string,
     |}>,
   }>,
   NativeProps?: $ReadOnly<{
     [propName: string]: string,
-  }>,
-  uiViewClassName: string,
+    }>,
+    uiViewClassName: string,
   validAttributes: AttributeConfiguration<TProps, TStyleProps>,
-|}>;
-
+    |}>;
+    
 export type ViewConfigGetter = () => ReactNativeBaseComponentViewConfig<>;
-
-/**
- * Class only exists for its Flow type.
- */
+      
+      /**
+       * Class only exists for its Flow type.
+       */
 class ReactNativeComponent<Props> extends React.Component<Props> {
-  blur(): void {}
-  focus(): void {}
-  measure(callback: MeasureOnSuccessCallback): void {}
-  measureInWindow(callback: MeasureInWindowOnSuccessCallback): void {}
-  measureLayout(
-    relativeToNativeNode: number,
-    onSuccess: MeasureLayoutOnSuccessCallback,
-    onFail?: () => void,
+          blur(): void {}
+          focus(): void {}
+          measure(callback: MeasureOnSuccessCallback): void {}
+          measureInWindow(callback: MeasureInWindowOnSuccessCallback): void {}
+          measureLayout(
+            relativeToNativeNode: number,
+            onSuccess: MeasureLayoutOnSuccessCallback,
+            onFail?: () => void,
   ): void {}
-  setNativeProps(nativeProps: Object): void {}
-}
-
-/**
- * This type keeps ReactNativeFiberHostComponent and NativeMethodsMixin in sync.
- * It can also provide types for ReactNative applications that use NMM or refs.
- */
+          setNativeProps(nativeProps: Object): void {}
+          }
+          
+          /**
+           * This type keeps ReactNativeFiberHostComponent and NativeMethodsMixin in sync.
+           * It can also provide types for ReactNative applications that use NMM or refs.
+           */
 export type NativeMethodsMixinType = {
-  blur(): void,
-  focus(): void,
-  measure(callback: MeasureOnSuccessCallback): void,
-  measureInWindow(callback: MeasureInWindowOnSuccessCallback): void,
-  measureLayout(
-    relativeToNativeNode: number,
-    onSuccess: MeasureLayoutOnSuccessCallback,
-    onFail: () => void,
-  ): void,
-  setNativeProps(nativeProps: Object): void,
-};
-
+            blur(): void,
+          focus(): void,
+          measure(callback: MeasureOnSuccessCallback): void,
+          measureInWindow(callback: MeasureInWindowOnSuccessCallback): void,
+          measureLayout(
+            relativeToNativeNode: number,
+            onSuccess: MeasureLayoutOnSuccessCallback,
+            onFail: () => void,
+          ): void,
+          setNativeProps(nativeProps: Object): void,
+        };
+        
 type SecretInternalsType = {
-  NativeMethodsMixin: NativeMethodsMixinType,
-  computeComponentStackForErrorReporting(tag: number): string,
-  // TODO (bvaughn) Decide which additional types to expose here?
-  // And how much information to fill in for the above types.
-};
-
+            NativeMethodsMixin: NativeMethodsMixinType,
+          computeComponentStackForErrorReporting(tag: number): string,
+          // TODO (bvaughn) Decide which additional types to expose here?
+          // And how much information to fill in for the above types.
+        };
+        
 type SecretInternalsFabricType = {
-  NativeMethodsMixin: NativeMethodsMixinType,
-};
-
-/**
- * Flat ReactNative renderer bundles are too big for Flow to parse efficiently.
- * Provide minimal Flow typing for the high-level RN API and call it a day.
- */
+            NativeMethodsMixin: NativeMethodsMixinType,
+        };
+        
+        /**
+         * Flat ReactNative renderer bundles are too big for Flow to parse efficiently.
+         * Provide minimal Flow typing for the high-level RN API and call it a day.
+         */
 export type ReactNativeType = {
-  NativeComponent: typeof ReactNativeComponent,
-  findNodeHandle(componentOrHandle: any): ?number,
-  render(
+            NativeComponent: typeof ReactNativeComponent,
+          findNodeHandle(componentOrHandle: any): ?number,
+          render(
     element: React$Element<any>,
-    containerTag: any,
-    callback: ?Function,
-  ): any,
-  unmountComponentAtNode(containerTag: number): any,
-  unmountComponentAtNodeAndRemoveContainer(containerTag: number): any,
-  unstable_batchedUpdates: any, // TODO (bvaughn) Add types
-
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsType,
-};
-
+          containerTag: any,
+          callback: ?Function,
+        ): any,
+        unmountComponentAtNode(containerTag: number): any,
+        unmountComponentAtNodeAndRemoveContainer(containerTag: number): any,
+        unstable_batchedUpdates: any, // TODO (bvaughn) Add types
+      
+        __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsType,
+      };
+      
 export type ReactFabricType = {
-  NativeComponent: typeof ReactNativeComponent,
-  findNodeHandle(componentOrHandle: any): ?number,
-  render(
+              NativeComponent: typeof ReactNativeComponent,
+            findNodeHandle(componentOrHandle: any): ?number,
+            render(
     element: React$Element<any>,
-    containerTag: any,
-    callback: ?Function,
-  ): any,
-  unmountComponentAtNode(containerTag: number): any,
-
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsFabricType,
-};
+            containerTag: any,
+            callback: ?Function,
+          ): any,
+          unmountComponentAtNode(containerTag: number): any,
+        
+          __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: SecretInternalsFabricType,
+        };
diff --git a/Libraries/Renderer/shims/ReactTypes.js b/Libraries/Renderer/shims/ReactTypes.js
index 4beed2224b314b..db59f831b7c979 100644
--- a/Libraries/Renderer/shims/ReactTypes.js
+++ b/Libraries/Renderer/shims/ReactTypes.js
@@ -19,6 +19,8 @@ export type ReactNode =
 
 export type ReactEmpty = null | void | boolean;
 
+export type ReactEmpty = null | void | boolean;
+
 export type ReactFragment = ReactEmpty | Iterable<React$Node>;
 
 export type ReactNodeList = ReactEmpty | React$Node;
@@ -56,12 +58,12 @@ export type ReactContext<T> = {
   $$typeof: Symbol | number,
   Consumer: ReactContext<T>,
   Provider: ReactProviderType<T>,
-  unstable_read: () => T,
 
   _calculateChangedBits: ((a: T, b: T) => number) | null,
 
   _currentValue: T,
   _currentValue2: T,
+  _threadCount: number,
 
   // DEV only
   _currentRenderer?: Object | null,
diff --git a/Libraries/Sample/Sample.android.js b/Libraries/Sample/Sample.android.js
index 2755a884bb3195..2b30b41d7defa4 100644
--- a/Libraries/Sample/Sample.android.js
+++ b/Libraries/Sample/Sample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Sample/Sample.h b/Libraries/Sample/Sample.h
index 2bee4ac5694a95..0c618d9211ed49 100644
--- a/Libraries/Sample/Sample.h
+++ b/Libraries/Sample/Sample.h
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 #import <React/RCTBridgeModule.h>
 
 @interface Sample : NSObject <RCTBridgeModule>
diff --git a/Libraries/Sample/Sample.ios.js b/Libraries/Sample/Sample.ios.js
index 856ba1a3d62408..63e6c2840b3e07 100644
--- a/Libraries/Sample/Sample.ios.js
+++ b/Libraries/Sample/Sample.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Sample/Sample.m b/Libraries/Sample/Sample.m
index d3094111251982..2c8a7f03063c02 100644
--- a/Libraries/Sample/Sample.m
+++ b/Libraries/Sample/Sample.m
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 #import "Sample.h"
 
 @implementation Sample
diff --git a/Libraries/Settings/RCTSettingsManager.h b/Libraries/Settings/RCTSettingsManager.h
index a331074c64a4f4..d9723b2d14450f 100644
--- a/Libraries/Settings/RCTSettingsManager.h
+++ b/Libraries/Settings/RCTSettingsManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Settings/RCTSettingsManager.m b/Libraries/Settings/RCTSettingsManager.m
index 2b392be7753ae0..a7472e9f4b05be 100644
--- a/Libraries/Settings/RCTSettingsManager.m
+++ b/Libraries/Settings/RCTSettingsManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Settings/Settings.android.js b/Libraries/Settings/Settings.android.js
index 1e6708a182a5d9..d754a7504bbbbe 100644
--- a/Libraries/Settings/Settings.android.js
+++ b/Libraries/Settings/Settings.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Settings/Settings.ios.js b/Libraries/Settings/Settings.ios.js
index 439f8850dd0889..d3987c3ec62d92 100644
--- a/Libraries/Settings/Settings.ios.js
+++ b/Libraries/Settings/Settings.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Share/Share.js b/Libraries/Share/Share.js
index 5018170e6ac2f3..a4cf5de087d399 100644
--- a/Libraries/Share/Share.js
+++ b/Libraries/Share/Share.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Storage/AsyncStorage.js b/Libraries/Storage/AsyncStorage.js
index 0877e9b099f378..877e707628ece2 100644
--- a/Libraries/Storage/AsyncStorage.js
+++ b/Libraries/Storage/AsyncStorage.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/EdgeInsetsPropType.js b/Libraries/StyleSheet/EdgeInsetsPropType.js
index 7d9ea680d8fc10..779bca391da9d3 100644
--- a/Libraries/StyleSheet/EdgeInsetsPropType.js
+++ b/Libraries/StyleSheet/EdgeInsetsPropType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,9 @@
 
 'use strict';
 
-const PropTypes = require('prop-types');
-
-const EdgeInsetsPropType = PropTypes.shape({
-  top: PropTypes.number,
-  left: PropTypes.number,
-  bottom: PropTypes.number,
-  right: PropTypes.number,
-});
-
 export type EdgeInsetsProp = $ReadOnly<{|
   top?: ?number,
   left?: ?number,
   bottom?: ?number,
   right?: ?number,
 |}>;
-
-module.exports = EdgeInsetsPropType;
diff --git a/Libraries/StyleSheet/LayoutPropTypes.js b/Libraries/StyleSheet/LayoutPropTypes.js
deleted file mode 100644
index ce99d659a3fd33..00000000000000
--- a/Libraries/StyleSheet/LayoutPropTypes.js
+++ /dev/null
@@ -1,561 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow strict
- */
-
-'use strict';
-
-const ReactPropTypes = require('prop-types');
-
-/**
- * React Native's layout system is based on Flexbox and is powered both
- * on iOS and Android by an open source project called `Yoga`:
- * https://github.com/facebook/yoga
- *
- * The implementation in Yoga is slightly different from what the
- * Flexbox spec defines - for example, we chose more sensible default
- * values. Since our layout docs are generated from the comments in this
- * file, please keep a brief comment describing each prop type.
- *
- * These properties are a subset of our styles that are consumed by the layout
- * algorithm and affect the positioning and sizing of views.
- */
-const LayoutPropTypes = {
-  /** `display` sets the display type of this component.
-   *
-   *  It works similarly to `display` in CSS, but only support 'flex' and 'none'.
-   *  'flex' is the default.
-   */
-  display: ReactPropTypes.oneOf(['none', 'flex']),
-
-  /** `width` sets the width of this component.
-   *
-   *  It works similarly to `width` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/width for more details.
-   */
-  width: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `height` sets the height of this component.
-   *
-   *  It works similarly to `height` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/height for more details.
-   */
-  height: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When the direction is `ltr`, `start` is equivalent to `left`.
-   * When the direction is `rtl`, `start` is equivalent to `right`.
-   *
-   * This style takes precedence over the `left`, `right`, and `end` styles.
-   */
-  start: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When the direction is `ltr`, `end` is equivalent to `right`.
-   * When the direction is `rtl`, `end` is equivalent to `left`.
-   *
-   * This style takes precedence over the `left` and `right` styles.
-   */
-  end: ReactPropTypes.oneOfType([ReactPropTypes.number, ReactPropTypes.string]),
-
-  /** `top` is the number of logical pixels to offset the top edge of
-   *  this component.
-   *
-   *  It works similarly to `top` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/top
-   *  for more details of how `top` affects layout.
-   */
-  top: ReactPropTypes.oneOfType([ReactPropTypes.number, ReactPropTypes.string]),
-
-  /** `left` is the number of logical pixels to offset the left edge of
-   *  this component.
-   *
-   *  It works similarly to `left` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/left
-   *  for more details of how `left` affects layout.
-   */
-  left: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `right` is the number of logical pixels to offset the right edge of
-   *  this component.
-   *
-   *  It works similarly to `right` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/right
-   *  for more details of how `right` affects layout.
-   */
-  right: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `bottom` is the number of logical pixels to offset the bottom edge of
-   *  this component.
-   *
-   *  It works similarly to `bottom` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/bottom
-   *  for more details of how `bottom` affects layout.
-   */
-  bottom: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `minWidth` is the minimum width for this component, in logical pixels.
-   *
-   *  It works similarly to `min-width` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/min-width
-   *  for more details.
-   */
-  minWidth: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `maxWidth` is the maximum width for this component, in logical pixels.
-   *
-   *  It works similarly to `max-width` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/max-width
-   *  for more details.
-   */
-  maxWidth: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `minHeight` is the minimum height for this component, in logical pixels.
-   *
-   *  It works similarly to `min-height` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/min-height
-   *  for more details.
-   */
-  minHeight: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `maxHeight` is the maximum height for this component, in logical pixels.
-   *
-   *  It works similarly to `max-height` in CSS, but in React Native you
-   *  must use points or percentages. Ems and other units are not supported.
-   *
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/max-height
-   *  for more details.
-   */
-  maxHeight: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `margin` has the same effect as setting each of
-   *  `marginTop`, `marginLeft`, `marginBottom`, and `marginRight`.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin
-   *  for more details.
-   */
-  margin: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `marginVertical` has the same effect as setting both
-   *  `marginTop` and `marginBottom`.
-   */
-  marginVertical: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `marginHorizontal` has the same effect as setting
-   *  both `marginLeft` and `marginRight`.
-   */
-  marginHorizontal: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `marginTop` works like `margin-top` in CSS.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-top
-   *  for more details.
-   */
-  marginTop: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `marginBottom` works like `margin-bottom` in CSS.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-bottom
-   *  for more details.
-   */
-  marginBottom: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `marginLeft` works like `margin-left` in CSS.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-left
-   *  for more details.
-   */
-  marginLeft: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `marginRight` works like `margin-right` in CSS.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-right
-   *  for more details.
-   */
-  marginRight: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When direction is `ltr`, `marginStart` is equivalent to `marginLeft`.
-   * When direction is `rtl`, `marginStart` is equivalent to `marginRight`.
-   */
-  marginStart: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When direction is `ltr`, `marginEnd` is equivalent to `marginRight`.
-   * When direction is `rtl`, `marginEnd` is equivalent to `marginLeft`.
-   */
-  marginEnd: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `padding` has the same effect as setting each of
-   *  `paddingTop`, `paddingBottom`, `paddingLeft`, and `paddingRight`.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/padding
-   *  for more details.
-   */
-  padding: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `paddingVertical` is like setting both of
-   *  `paddingTop` and `paddingBottom`.
-   */
-  paddingVertical: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** Setting `paddingHorizontal` is like setting both of
-   *  `paddingLeft` and `paddingRight`.
-   */
-  paddingHorizontal: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `paddingTop` works like `padding-top` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-top
-   * for more details.
-   */
-  paddingTop: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `paddingBottom` works like `padding-bottom` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-bottom
-   * for more details.
-   */
-  paddingBottom: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `paddingLeft` works like `padding-left` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-left
-   * for more details.
-   */
-  paddingLeft: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `paddingRight` works like `padding-right` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-right
-   * for more details.
-   */
-  paddingRight: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When direction is `ltr`, `paddingStart` is equivalent to `paddingLeft`.
-   * When direction is `rtl`, `paddingStart` is equivalent to `paddingRight`.
-   */
-  paddingStart: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * When direction is `ltr`, `paddingEnd` is equivalent to `paddingRight`.
-   * When direction is `rtl`, `paddingEnd` is equivalent to `paddingLeft`.
-   */
-  paddingEnd: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /** `borderWidth` works like `border-width` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-width
-   * for more details.
-   */
-  borderWidth: ReactPropTypes.number,
-
-  /** `borderTopWidth` works like `border-top-width` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-top-width
-   * for more details.
-   */
-  borderTopWidth: ReactPropTypes.number,
-
-  /**
-   * When direction is `ltr`, `borderStartWidth` is equivalent to `borderLeftWidth`.
-   * When direction is `rtl`, `borderStartWidth` is equivalent to `borderRightWidth`.
-   */
-  borderStartWidth: ReactPropTypes.number,
-
-  /**
-   * When direction is `ltr`, `borderEndWidth` is equivalent to `borderRightWidth`.
-   * When direction is `rtl`, `borderEndWidth` is equivalent to `borderLeftWidth`.
-   */
-  borderEndWidth: ReactPropTypes.number,
-
-  /** `borderRightWidth` works like `border-right-width` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-right-width
-   * for more details.
-   */
-  borderRightWidth: ReactPropTypes.number,
-
-  /** `borderBottomWidth` works like `border-bottom-width` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-width
-   * for more details.
-   */
-  borderBottomWidth: ReactPropTypes.number,
-
-  /** `borderLeftWidth` works like `border-left-width` in CSS.
-   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-left-width
-   * for more details.
-   */
-  borderLeftWidth: ReactPropTypes.number,
-
-  /** `position` in React Native is similar to regular CSS, but
-   *  everything is set to `relative` by default, so `absolute`
-   *  positioning is always just relative to the parent.
-   *
-   *  If you want to position a child using specific numbers of logical
-   *  pixels relative to its parent, set the child to have `absolute`
-   *  position.
-   *
-   *  If you want to position a child relative to something
-   *  that is not its parent, just don't use styles for that. Use the
-   *  component tree.
-   *
-   *  See https://github.com/facebook/yoga
-   *  for more details on how `position` differs between React Native
-   *  and CSS.
-   */
-  position: ReactPropTypes.oneOf(['absolute', 'relative']),
-
-  /** `flexDirection` controls which directions children of a container go.
-   *  `row` goes left to right, `column` goes top to bottom, and you may
-   *  be able to guess what the other two do. It works like `flex-direction`
-   *  in CSS, except the default is `column`.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-direction
-   *  for more details.
-   */
-  flexDirection: ReactPropTypes.oneOf([
-    'row',
-    'row-reverse',
-    'column',
-    'column-reverse',
-  ]),
-
-  /** `flexWrap` controls whether children can wrap around after they
-   *  hit the end of a flex container.
-   *  It works like `flex-wrap` in CSS (default: nowrap).
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-wrap
-   *  for more details.
-   */
-  flexWrap: ReactPropTypes.oneOf(['wrap', 'nowrap', 'wrap-reverse']),
-
-  /** `justifyContent` aligns children in the main direction.
-   *  For example, if children are flowing vertically, `justifyContent`
-   *  controls how they align vertically.
-   *  It works like `justify-content` in CSS (default: flex-start).
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content
-   *  for more details.
-   */
-  justifyContent: ReactPropTypes.oneOf([
-    'flex-start',
-    'flex-end',
-    'center',
-    'space-between',
-    'space-around',
-    'space-evenly',
-  ]),
-
-  /** `alignItems` aligns children in the cross direction.
-   *  For example, if children are flowing vertically, `alignItems`
-   *  controls how they align horizontally.
-   *  It works like `align-items` in CSS (default: stretch).
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-items
-   *  for more details.
-   */
-  alignItems: ReactPropTypes.oneOf([
-    'flex-start',
-    'flex-end',
-    'center',
-    'stretch',
-    'baseline',
-  ]),
-
-  /** `alignSelf` controls how a child aligns in the cross direction,
-   *  overriding the `alignItems` of the parent. It works like `align-self`
-   *  in CSS (default: auto).
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-self
-   *  for more details.
-   */
-  alignSelf: ReactPropTypes.oneOf([
-    'auto',
-    'flex-start',
-    'flex-end',
-    'center',
-    'stretch',
-    'baseline',
-  ]),
-
-  /** `alignContent` controls how rows align in the cross direction,
-   *  overriding the `alignContent` of the parent.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-content
-   *  for more details.
-   */
-  alignContent: ReactPropTypes.oneOf([
-    'flex-start',
-    'flex-end',
-    'center',
-    'stretch',
-    'space-between',
-    'space-around',
-  ]),
-
-  /** `overflow` controls how children are measured and displayed.
-   *  `overflow: hidden` causes views to be clipped while `overflow: scroll`
-   *  causes views to be measured independently of their parents main axis.
-   *  It works like `overflow` in CSS (default: visible).
-   *  See https://developer.mozilla.org/en/docs/Web/CSS/overflow
-   *  for more details.
-   *  `overflow: visible` only works on iOS. On Android, all views will clip
-   *  their children.
-   */
-  overflow: ReactPropTypes.oneOf(['visible', 'hidden', 'scroll']),
-
-  /** In React Native `flex` does not work the same way that it does in CSS.
-   *  `flex` is a number rather than a string, and it works
-   *  according to the `Yoga` library
-   *  at https://github.com/facebook/yoga
-   *
-   *  When `flex` is a positive number, it makes the component flexible
-   *  and it will be sized proportional to its flex value. So a
-   *  component with `flex` set to 2 will take twice the space as a
-   *  component with `flex` set to 1.
-   *
-   *  When `flex` is 0, the component is sized according to `width`
-   *  and `height` and it is inflexible.
-   *
-   *  When `flex` is -1, the component is normally sized according
-   *  `width` and `height`. However, if there's not enough space,
-   *  the component will shrink to its `minWidth` and `minHeight`.
-   *
-   * flexGrow, flexShrink, and flexBasis work the same as in CSS.
-   */
-  flex: ReactPropTypes.number,
-  flexGrow: ReactPropTypes.number,
-  flexShrink: ReactPropTypes.number,
-  flexBasis: ReactPropTypes.oneOfType([
-    ReactPropTypes.number,
-    ReactPropTypes.string,
-  ]),
-
-  /**
-   * Aspect ratio control the size of the undefined dimension of a node. Aspect ratio is a
-   * non-standard property only available in react native and not CSS.
-   *
-   * - On a node with a set width/height aspect ratio control the size of the unset dimension
-   * - On a node with a set flex basis aspect ratio controls the size of the node in the cross axis
-   *   if unset
-   * - On a node with a measure function aspect ratio works as though the measure function measures
-   *   the flex basis
-   * - On a node with flex grow/shrink aspect ratio controls the size of the node in the cross axis
-   *   if unset
-   * - Aspect ratio takes min/max dimensions into account
-   */
-  aspectRatio: ReactPropTypes.number,
-
-  /** `zIndex` controls which components display on top of others.
-   *  Normally, you don't use `zIndex`. Components render according to
-   *  their order in the document tree, so later components draw over
-   *  earlier ones. `zIndex` may be useful if you have animations or custom
-   *  modal interfaces where you don't want this behavior.
-   *
-   *  It works like the CSS `z-index` property - components with a larger
-   *  `zIndex` will render on top. Think of the z-direction like it's
-   *  pointing from the phone into your eyeball.
-   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/z-index for
-   *  more details.
-   */
-  zIndex: ReactPropTypes.number,
-
-  /** `direction` specifies the directional flow of the user interface.
-   *  The default is `inherit`, except for root node which will have
-   *  value based on the current locale.
-   *  See https://facebook.github.io/yoga/docs/rtl/
-   *  for more details.
-   *  @platform ios
-   */
-  direction: ReactPropTypes.oneOf(['inherit', 'ltr', 'rtl']),
-};
-
-module.exports = LayoutPropTypes;
diff --git a/Libraries/StyleSheet/PointPropType.js b/Libraries/StyleSheet/PointPropType.js
index 86d40b5afee201..302892edae391a 100644
--- a/Libraries/StyleSheet/PointPropType.js
+++ b/Libraries/StyleSheet/PointPropType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,16 +10,7 @@
 
 'use strict';
 
-const PropTypes = require('prop-types');
-
-const PointPropType = PropTypes.shape({
-  x: PropTypes.number,
-  y: PropTypes.number,
-});
-
 export type PointProp = $ReadOnly<{
   x: number,
   y: number,
 }>;
-
-module.exports = PointPropType;
diff --git a/Libraries/StyleSheet/StyleSheet.js b/Libraries/StyleSheet/StyleSheet.js
index 84d2ccbef48258..d50ca1d83fbba5 100644
--- a/Libraries/StyleSheet/StyleSheet.js
+++ b/Libraries/StyleSheet/StyleSheet.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -343,7 +343,7 @@ module.exports = {
   ) {
     let value;
 
-    if (typeof ReactNativeStyleAttributes[property] === 'string') {
+    if (ReactNativeStyleAttributes[property] === true) {
       value = {};
     } else if (typeof ReactNativeStyleAttributes[property] === 'object') {
       value = ReactNativeStyleAttributes[property];
diff --git a/Libraries/StyleSheet/StyleSheetTypes.js b/Libraries/StyleSheet/StyleSheetTypes.js
index 840d050987c9a0..240d8efe8fa8af 100644
--- a/Libraries/StyleSheet/StyleSheetTypes.js
+++ b/Libraries/StyleSheet/StyleSheetTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,48 +16,333 @@ import type {SemanticOrDynamicColorType} from 'normalizeColor'; // TODO(macOS IS
 export type ColorValue = null | string | SemanticOrDynamicColorType; // TODO(macOS ISS#2323203)
 export type DimensionValue = null | number | string | AnimatedNode;
 
+/**
+ * React Native's layout system is based on Flexbox and is powered both
+ * on iOS and Android by an open source project called `Yoga`:
+ * https://github.com/facebook/yoga
+ *
+ * The implementation in Yoga is slightly different from what the
+ * Flexbox spec defines - for example, we chose more sensible default
+ * values. Since our layout docs are generated from the comments in this
+ * file, please keep a brief comment describing each prop type.
+ *
+ * These properties are a subset of our styles that are consumed by the layout
+ * algorithm and affect the positioning and sizing of views.
+ */
 export type ____LayoutStyle_Internal = $ReadOnly<{|
+  /** `display` sets the display type of this component.
+   *
+   *  It works similarly to `display` in CSS, but only support 'flex' and 'none'.
+   *  'flex' is the default.
+   */
   display?: 'none' | 'flex',
+
+  /** `width` sets the width of this component.
+   *
+   *  It works similarly to `width` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/width for more details.
+   */
   width?: DimensionValue,
+
+  /** `height` sets the height of this component.
+   *
+   *  It works similarly to `height` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/height for more details.
+   */
   height?: DimensionValue,
+
+  /** `bottom` is the number of logical pixels to offset the bottom edge of
+   *  this component.
+   *
+   *  It works similarly to `bottom` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/bottom
+   *  for more details of how `bottom` affects layout.
+   */
   bottom?: DimensionValue,
+
+  /**
+   * When the direction is `ltr`, `end` is equivalent to `right`.
+   * When the direction is `rtl`, `end` is equivalent to `left`.
+   *
+   * This style takes precedence over the `left` and `right` styles.
+   */
   end?: DimensionValue,
+
+  /** `left` is the number of logical pixels to offset the left edge of
+   *  this component.
+   *
+   *  It works similarly to `left` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/left
+   *  for more details of how `left` affects layout.
+   */
   left?: DimensionValue,
+
+  /** `right` is the number of logical pixels to offset the right edge of
+   *  this component.
+   *
+   *  It works similarly to `right` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/right
+   *  for more details of how `right` affects layout.
+   */
   right?: DimensionValue,
+
+  /**
+   * When the direction is `ltr`, `start` is equivalent to `left`.
+   * When the direction is `rtl`, `start` is equivalent to `right`.
+   *
+   * This style takes precedence over the `left`, `right`, and `end` styles.
+   */
   start?: DimensionValue,
+
+  /** `top` is the number of logical pixels to offset the top edge of
+   *  this component.
+   *
+   *  It works similarly to `top` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/top
+   *  for more details of how `top` affects layout.
+   */
   top?: DimensionValue,
+
+  /** `minWidth` is the minimum width for this component, in logical pixels.
+   *
+   *  It works similarly to `min-width` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/min-width
+   *  for more details.
+   */
   minWidth?: DimensionValue,
+
+  /** `maxWidth` is the maximum width for this component, in logical pixels.
+   *
+   *  It works similarly to `max-width` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/max-width
+   *  for more details.
+   */
   maxWidth?: DimensionValue,
+
+  /** `minHeight` is the minimum height for this component, in logical pixels.
+   *
+   *  It works similarly to `min-height` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/min-height
+   *  for more details.
+   */
   minHeight?: DimensionValue,
+
+  /** `maxHeight` is the maximum height for this component, in logical pixels.
+   *
+   *  It works similarly to `max-height` in CSS, but in React Native you
+   *  must use points or percentages. Ems and other units are not supported.
+   *
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/max-height
+   *  for more details.
+   */
   maxHeight?: DimensionValue,
+
+  /** Setting `margin` has the same effect as setting each of
+   *  `marginTop`, `marginLeft`, `marginBottom`, and `marginRight`.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin
+   *  for more details.
+   */
   margin?: DimensionValue,
+
+  /** `marginBottom` works like `margin-bottom` in CSS.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-bottom
+   *  for more details.
+   */
   marginBottom?: DimensionValue,
+
+  /**
+   * When direction is `ltr`, `marginEnd` is equivalent to `marginRight`.
+   * When direction is `rtl`, `marginEnd` is equivalent to `marginLeft`.
+   */
   marginEnd?: DimensionValue,
+
+  /** Setting `marginHorizontal` has the same effect as setting
+   *  both `marginLeft` and `marginRight`.
+   */
   marginHorizontal?: DimensionValue,
+
+  /** `marginLeft` works like `margin-left` in CSS.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-left
+   *  for more details.
+   */
   marginLeft?: DimensionValue,
+
+  /** `marginRight` works like `margin-right` in CSS.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-right
+   *  for more details.
+   */
   marginRight?: DimensionValue,
+
+  /**
+   * When direction is `ltr`, `marginStart` is equivalent to `marginLeft`.
+   * When direction is `rtl`, `marginStart` is equivalent to `marginRight`.
+   */
   marginStart?: DimensionValue,
+
+  /** `marginTop` works like `margin-top` in CSS.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-top
+   *  for more details.
+   */
   marginTop?: DimensionValue,
+
+  /** Setting `marginVertical` has the same effect as setting both
+   *  `marginTop` and `marginBottom`.
+   */
   marginVertical?: DimensionValue,
+
+  /** Setting `padding` has the same effect as setting each of
+   *  `paddingTop`, `paddingBottom`, `paddingLeft`, and `paddingRight`.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/padding
+   *  for more details.
+   */
   padding?: DimensionValue,
+
+  /** `paddingBottom` works like `padding-bottom` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-bottom
+   * for more details.
+   */
   paddingBottom?: DimensionValue,
+
+  /**
+   * When direction is `ltr`, `paddingEnd` is equivalent to `paddingRight`.
+   * When direction is `rtl`, `paddingEnd` is equivalent to `paddingLeft`.
+   */
   paddingEnd?: DimensionValue,
+
+  /** Setting `paddingHorizontal` is like setting both of
+   *  `paddingLeft` and `paddingRight`.
+   */
   paddingHorizontal?: DimensionValue,
+
+  /** `paddingLeft` works like `padding-left` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-left
+   * for more details.
+   */
   paddingLeft?: DimensionValue,
+
+  /** `paddingRight` works like `padding-right` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-right
+   * for more details.
+   */
   paddingRight?: DimensionValue,
+
+  /**
+   * When direction is `ltr`, `paddingStart` is equivalent to `paddingLeft`.
+   * When direction is `rtl`, `paddingStart` is equivalent to `paddingRight`.
+   */
   paddingStart?: DimensionValue,
+
+  /** `paddingTop` works like `padding-top` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-top
+   * for more details.
+   */
   paddingTop?: DimensionValue,
+
+  /** Setting `paddingVertical` is like setting both of
+   *  `paddingTop` and `paddingBottom`.
+   */
   paddingVertical?: DimensionValue,
+
+  /** `borderWidth` works like `border-width` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-width
+   * for more details.
+   */
   borderWidth?: number,
+
+  /** `borderBottomWidth` works like `border-bottom-width` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-width
+   * for more details.
+   */
   borderBottomWidth?: number,
+
+  /**
+   * When direction is `ltr`, `borderEndWidth` is equivalent to `borderRightWidth`.
+   * When direction is `rtl`, `borderEndWidth` is equivalent to `borderLeftWidth`.
+   */
   borderEndWidth?: number,
+
+  /** `borderLeftWidth` works like `border-left-width` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-left-width
+   * for more details.
+   */
   borderLeftWidth?: number,
+
+  /** `borderRightWidth` works like `border-right-width` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-right-width
+   * for more details.
+   */
   borderRightWidth?: number,
+
+  /**
+   * When direction is `ltr`, `borderStartWidth` is equivalent to `borderLeftWidth`.
+   * When direction is `rtl`, `borderStartWidth` is equivalent to `borderRightWidth`.
+   */
   borderStartWidth?: number,
+
+  /** `borderTopWidth` works like `border-top-width` in CSS.
+   * See https://developer.mozilla.org/en-US/docs/Web/CSS/border-top-width
+   * for more details.
+   */
   borderTopWidth?: number,
+
+  /** `position` in React Native is similar to regular CSS, but
+   *  everything is set to `relative` by default, so `absolute`
+   *  positioning is always just relative to the parent.
+   *
+   *  If you want to position a child using specific numbers of logical
+   *  pixels relative to its parent, set the child to have `absolute`
+   *  position.
+   *
+   *  If you want to position a child relative to something
+   *  that is not its parent, just don't use styles for that. Use the
+   *  component tree.
+   *
+   *  See https://github.com/facebook/yoga
+   *  for more details on how `position` differs between React Native
+   *  and CSS.
+   */
   position?: 'absolute' | 'relative',
+
+  /** `flexDirection` controls which directions children of a container go.
+   *  `row` goes left to right, `column` goes top to bottom, and you may
+   *  be able to guess what the other two do. It works like `flex-direction`
+   *  in CSS, except the default is `column`.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-direction
+   *  for more details.
+   */
   flexDirection?: 'row' | 'row-reverse' | 'column' | 'column-reverse',
+
+  /** `flexWrap` controls whether children can wrap around after they
+   *  hit the end of a flex container.
+   *  It works like `flex-wrap` in CSS (default: nowrap).
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-wrap
+   *  for more details.
+   */
   flexWrap?: 'wrap' | 'nowrap' | 'wrap-reverse',
+
+  /** `justifyContent` aligns children in the main direction.
+   *  For example, if children are flowing vertically, `justifyContent`
+   *  controls how they align vertically.
+   *  It works like `justify-content` in CSS (default: flex-start).
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content
+   *  for more details.
+   */
   justifyContent?:
     | 'flex-start'
     | 'flex-end'
@@ -65,7 +350,22 @@ export type ____LayoutStyle_Internal = $ReadOnly<{|
     | 'space-between'
     | 'space-around'
     | 'space-evenly',
+
+  /** `alignItems` aligns children in the cross direction.
+   *  For example, if children are flowing vertically, `alignItems`
+   *  controls how they align horizontally.
+   *  It works like `align-items` in CSS (default: stretch).
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-items
+   *  for more details.
+   */
   alignItems?: 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline',
+
+  /** `alignSelf` controls how a child aligns in the cross direction,
+   *  overriding the `alignItems` of the parent. It works like `align-self`
+   *  in CSS (default: auto).
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-self
+   *  for more details.
+   */
   alignSelf?:
     | 'auto'
     | 'flex-start'
@@ -73,6 +373,12 @@ export type ____LayoutStyle_Internal = $ReadOnly<{|
     | 'center'
     | 'stretch'
     | 'baseline',
+
+  /** `alignContent` controls how rows align in the cross direction,
+   *  overriding the `alignContent` of the parent.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/align-content
+   *  for more details.
+   */
   alignContent?:
     | 'flex-start'
     | 'flex-end'
@@ -80,17 +386,98 @@ export type ____LayoutStyle_Internal = $ReadOnly<{|
     | 'stretch'
     | 'space-between'
     | 'space-around',
+
+  /** `overflow` controls how children are measured and displayed.
+   *  `overflow: hidden` causes views to be clipped while `overflow: scroll`
+   *  causes views to be measured independently of their parents main axis.
+   *  It works like `overflow` in CSS (default: visible).
+   *  See https://developer.mozilla.org/en/docs/Web/CSS/overflow
+   *  for more details.
+   *  `overflow: visible` only works on iOS. On Android, all views will clip
+   *  their children.
+   */
   overflow?: 'visible' | 'hidden' | 'scroll',
+
+  /** In React Native `flex` does not work the same way that it does in CSS.
+   *  `flex` is a number rather than a string, and it works
+   *  according to the `Yoga` library
+   *  at https://github.com/facebook/yoga
+   *
+   *  When `flex` is a positive number, it makes the component flexible
+   *  and it will be sized proportional to its flex value. So a
+   *  component with `flex` set to 2 will take twice the space as a
+   *  component with `flex` set to 1.
+   *
+   *  When `flex` is 0, the component is sized according to `width`
+   *  and `height` and it is inflexible.
+   *
+   *  When `flex` is -1, the component is normally sized according
+   *  `width` and `height`. However, if there's not enough space,
+   *  the component will shrink to its `minWidth` and `minHeight`.
+   *
+   * flexGrow, flexShrink, and flexBasis work the same as in CSS.
+   */
   flex?: number,
   flexGrow?: number,
   flexShrink?: number,
   flexBasis?: number | string,
+
+  /**
+   * Aspect ratio control the size of the undefined dimension of a node. Aspect ratio is a
+   * non-standard property only available in react native and not CSS.
+   *
+   * - On a node with a set width/height aspect ratio control the size of the unset dimension
+   * - On a node with a set flex basis aspect ratio controls the size of the node in the cross axis
+   *   if unset
+   * - On a node with a measure function aspect ratio works as though the measure function measures
+   *   the flex basis
+   * - On a node with flex grow/shrink aspect ratio controls the size of the node in the cross axis
+   *   if unset
+   * - Aspect ratio takes min/max dimensions into account
+   */
   aspectRatio?: number,
+
+  /** `zIndex` controls which components display on top of others.
+   *  Normally, you don't use `zIndex`. Components render according to
+   *  their order in the document tree, so later components draw over
+   *  earlier ones. `zIndex` may be useful if you have animations or custom
+   *  modal interfaces where you don't want this behavior.
+   *
+   *  It works like the CSS `z-index` property - components with a larger
+   *  `zIndex` will render on top. Think of the z-direction like it's
+   *  pointing from the phone into your eyeball.
+   *  See https://developer.mozilla.org/en-US/docs/Web/CSS/z-index for
+   *  more details.
+   */
   zIndex?: number,
+
+  /** `direction` specifies the directional flow of the user interface.
+   *  The default is `inherit`, except for root node which will have
+   *  value based on the current locale.
+   *  See https://facebook.github.io/yoga/docs/rtl/
+   *  for more details.
+   *  @platform ios
+   */
   direction?: 'inherit' | 'ltr' | 'rtl',
 |}>;
 
 export type ____TransformStyle_Internal = $ReadOnly<{|
+  /**
+   * `transform` accepts an array of transformation objects. Each object specifies
+   * the property that will be transformed as the key, and the value to use in the
+   * transformation. Objects should not be combined. Use a single key/value pair
+   * per object.
+   *
+   * The rotate transformations require a string so that the transform may be
+   * expressed in degrees (deg) or radians (rad). For example:
+   *
+   * `transform([{ rotateX: '45deg' }, { rotateZ: '0.785398rad' }])`
+   *
+   * The skew transformations require a string so that the transform may be
+   * expressed in degrees (deg). For example:
+   *
+   * `transform([{ skewX: '45deg' }])`
+   */
   transform?: $ReadOnlyArray<
     | {|+perspective: number | AnimatedNode|}
     | {|+rotate: string | AnimatedNode|}
@@ -116,13 +503,38 @@ export type ____TransformStyle_Internal = $ReadOnly<{|
   >,
 |}>;
 
+/**
+ * These props can be used to dynamically generate shadows on views, images, text, etc.
+ *
+ * Because they are dynamically generated, they may cause performance regressions. Static
+ * shadow image asset may be a better way to go for optimal performance.
+ *
+ * These properties are iOS only - for similar functionality on Android, use the [`elevation`
+ * property](docs/viewstyleproptypes.html#elevation).
+ */
 export type ____ShadowStyle_Internal = $ReadOnly<{|
+  /**
+   * Sets the drop shadow color
+   * @platform ios
+   */
   shadowColor?: ColorValue,
+  /**
+   * Sets the drop shadow offset
+   * @platform ios
+   */
   shadowOffset?: $ReadOnly<{|
     width?: number,
     height?: number,
   |}>,
+  /**
+   * Sets the drop shadow opacity (multiplied by the color's alpha component)
+   * @platform ios
+   */
   shadowOpacity?: number | AnimatedNode,
+  /**
+   * Sets the drop shadow blur radius
+   * @platform ios
+   */
   shadowRadius?: number,
 |}>;
 
diff --git a/Libraries/StyleSheet/StyleSheetValidation.js b/Libraries/StyleSheet/StyleSheetValidation.js
index a645c1e36b3b05..116e1fce7c2be1 100644
--- a/Libraries/StyleSheet/StyleSheetValidation.js
+++ b/Libraries/StyleSheet/StyleSheetValidation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-const ImageStylePropTypes = require('ImageStylePropTypes');
+const DeprecatedImageStylePropTypes = require('DeprecatedImageStylePropTypes');
 const TextStylePropTypes = require('TextStylePropTypes');
-const ViewStylePropTypes = require('ViewStylePropTypes');
+const DeprecatedViewStylePropTypes = require('DeprecatedViewStylePropTypes');
 
 const invariant = require('fbjs/lib/invariant');
 
@@ -24,7 +24,7 @@ const ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
 
 class StyleSheetValidation {
   static validateStyleProp(prop: string, style: Object, caller: string) {
-    if (!__DEV__) {
+    if (!__DEV__ || global.__RCTProfileIsProfiling) {
       return;
     }
     if (allStylePropTypes[prop] === undefined) {
@@ -48,7 +48,7 @@ class StyleSheetValidation {
   }
 
   static validateStyle(name: string, styles: Object) {
-    if (!__DEV__) {
+    if (!__DEV__ || global.__RCTProfileIsProfiling) {
       return;
     }
     for (const prop in styles[name]) {
@@ -60,7 +60,13 @@ class StyleSheetValidation {
     }
   }
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   static addValidStylePropTypes(stylePropTypes) {
+    if (!__DEV__ || global.__RCTProfileIsProfiling) {
+      return;
+    }
     for (const key in stylePropTypes) {
       allStylePropTypes[key] = stylePropTypes[key];
     }
@@ -81,8 +87,10 @@ const styleError = function(message1, style, caller?, message2?) {
 
 const allStylePropTypes = {};
 
-StyleSheetValidation.addValidStylePropTypes(ImageStylePropTypes);
-StyleSheetValidation.addValidStylePropTypes(TextStylePropTypes);
-StyleSheetValidation.addValidStylePropTypes(ViewStylePropTypes);
+if (__DEV__ && !global.__RCTProfileIsProfiling) {
+  StyleSheetValidation.addValidStylePropTypes(DeprecatedImageStylePropTypes);
+  StyleSheetValidation.addValidStylePropTypes(TextStylePropTypes);
+  StyleSheetValidation.addValidStylePropTypes(DeprecatedViewStylePropTypes);
+}
 
 module.exports = StyleSheetValidation;
diff --git a/Libraries/StyleSheet/__flowtests__/StyleSheet-flowtest.js b/Libraries/StyleSheet/__flowtests__/StyleSheet-flowtest.js
index d4d5e5f3594f6c..de7d6a6521c797 100644
--- a/Libraries/StyleSheet/__flowtests__/StyleSheet-flowtest.js
+++ b/Libraries/StyleSheet/__flowtests__/StyleSheet-flowtest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/__tests__/flattenStyle-test.js b/Libraries/StyleSheet/__tests__/flattenStyle-test.js
index fed9be2b5aada5..f441c76203a049 100644
--- a/Libraries/StyleSheet/__tests__/flattenStyle-test.js
+++ b/Libraries/StyleSheet/__tests__/flattenStyle-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/__tests__/normalizeColor-test.js b/Libraries/StyleSheet/__tests__/normalizeColor-test.js
index 65b398ee222d83..86f39d764b32a8 100644
--- a/Libraries/StyleSheet/__tests__/normalizeColor-test.js
+++ b/Libraries/StyleSheet/__tests__/normalizeColor-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/__tests__/processColor-test.js b/Libraries/StyleSheet/__tests__/processColor-test.js
index 1d717bf4726841..5342bfa7d6a857 100644
--- a/Libraries/StyleSheet/__tests__/processColor-test.js
+++ b/Libraries/StyleSheet/__tests__/processColor-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/__tests__/processTransform-test.js b/Libraries/StyleSheet/__tests__/processTransform-test.js
index 08809e94fccc73..820db774956e53 100644
--- a/Libraries/StyleSheet/__tests__/processTransform-test.js
+++ b/Libraries/StyleSheet/__tests__/processTransform-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/__tests__/setNormalizedColorAlpha-test.js b/Libraries/StyleSheet/__tests__/setNormalizedColorAlpha-test.js
index f2d09ecb4e1821..2afffd0d0189c2 100644
--- a/Libraries/StyleSheet/__tests__/setNormalizedColorAlpha-test.js
+++ b/Libraries/StyleSheet/__tests__/setNormalizedColorAlpha-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/flattenStyle.js b/Libraries/StyleSheet/flattenStyle.js
index 9fabc4bebd37b3..6aa9647437406a 100644
--- a/Libraries/StyleSheet/flattenStyle.js
+++ b/Libraries/StyleSheet/flattenStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/processColor.js b/Libraries/StyleSheet/processColor.js
index 334f9448b7ed66..b369267f66b6d0 100644
--- a/Libraries/StyleSheet/processColor.js
+++ b/Libraries/StyleSheet/processColor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/StyleSheet/processTransform.js b/Libraries/StyleSheet/processTransform.js
index ae7126b770c748..4b10e4fe6a731b 100644
--- a/Libraries/StyleSheet/processTransform.js
+++ b/Libraries/StyleSheet/processTransform.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -177,6 +177,9 @@ function _validateTransform(key, value, transformation) {
         value.length === 9 || value.length === 16,
         'Matrix transform must have a length of 9 (2d) or 16 (3d). ' +
           'Provided matrix has a length of %s: %s',
+        /* $FlowFixMe(>=0.84.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.84 was deployed. To see the error, delete
+         * this comment and run Flow. */
         value.length,
         stringifySafe(transformation),
       );
@@ -185,6 +188,9 @@ function _validateTransform(key, value, transformation) {
       invariant(
         value.length === 2 || value.length === 3,
         'Transform with key translate must be an array of length 2 or 3, found %s: %s',
+        /* $FlowFixMe(>=0.84.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.84 was deployed. To see the error, delete
+         * this comment and run Flow. */
         value.length,
         stringifySafe(transformation),
       );
diff --git a/Libraries/StyleSheet/setNormalizedColorAlpha.js b/Libraries/StyleSheet/setNormalizedColorAlpha.js
index 52fe783fd60200..ea576926088045 100644
--- a/Libraries/StyleSheet/setNormalizedColorAlpha.js
+++ b/Libraries/StyleSheet/setNormalizedColorAlpha.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.h b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.h
index 99e89e56ad95c9..7dfd2ac96f08d4 100644
--- a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.h
+++ b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.mm b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.mm
index 47b176524eb878..404cc22bd5ccf3 100644
--- a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.mm
+++ b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponent.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.h b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.h
index c2bfbc81bf095a..75d03e2d36f106 100644
--- a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.h
+++ b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.mm b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.mm
index 60a72cb0ad25be..5123963cb1aa1f 100644
--- a/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.mm
+++ b/Libraries/SurfaceBackedComponent/RCTSurfaceBackedComponentState.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent+Internal.h b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent+Internal.h
index 269c73e79eccbe..b8a81d6d994164 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent+Internal.h
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent+Internal.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.h b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.h
index 975a72bbc64e68..48ad9ce78b6359 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.h
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.mm b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.mm
index 963813ff80eedf..6782f9a4daefeb 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.mm
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponent.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.h b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.h
index 7937090ab225cd..17da5de8a5c799 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.h
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.mm b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.mm
index 73ba8e3767da55..d3a024ec2fa2fb 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.mm
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentController.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentOptions.h b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentOptions.h
index 5c9946eb350af1..6ebadafe49e466 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentOptions.h
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentOptions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.h b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.h
index 2759fdd9fcdbeb..13defa9de2bf18 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.h
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.mm b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.mm
index c2e44c9db345ff..60020bb01cc60b 100644
--- a/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.mm
+++ b/Libraries/SurfaceHostingComponent/RCTSurfaceHostingComponentState.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/BaseText/RCTBaseTextShadowView.h b/Libraries/Text/BaseText/RCTBaseTextShadowView.h
index 331d1ca2161e3f..a7cbf10b70d25a 100644
--- a/Libraries/Text/BaseText/RCTBaseTextShadowView.h
+++ b/Libraries/Text/BaseText/RCTBaseTextShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/BaseText/RCTBaseTextShadowView.m b/Libraries/Text/BaseText/RCTBaseTextShadowView.m
index 49ce7690dfc96e..993e88f8dcad6d 100644
--- a/Libraries/Text/BaseText/RCTBaseTextShadowView.m
+++ b/Libraries/Text/BaseText/RCTBaseTextShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,6 +14,20 @@
 
 NSString *const RCTBaseTextShadowViewEmbeddedShadowViewAttributeName = @"RCTBaseTextShadowViewEmbeddedShadowViewAttributeName";
 
+static void RCTInlineViewYogaNodeDirtied(YGNodeRef node)
+{
+  // An inline view (a view nested inside of a text node) does not have a parent
+  // in the Yoga tree. Consequently, we have to manually propagate the inline
+  // view's dirty signal up through the text nodes. At some point, it'll reach
+  // the outermost text node which has a Yoga node and then Yoga will take over
+  // the dirty signal propagation.
+  RCTShadowView *inlineView = (__bridge RCTShadowView *)YGNodeGetContext(node);
+  RCTBaseTextShadowView *baseTextShadowView =
+    (RCTBaseTextShadowView *)inlineView.reactSuperview;
+  
+  [baseTextShadowView dirtyLayout];
+}
+
 @implementation RCTBaseTextShadowView
 {
   NSAttributedString *_Nullable _cachedAttributedText;
@@ -35,6 +49,30 @@ - (void)setReactTag:(NSNumber *)reactTag
   _textAttributes.tag = reactTag;
 }
 
+#pragma mark - Life Cycle
+
+- (void)insertReactSubview:(RCTShadowView *)subview atIndex:(NSInteger)index
+{
+  [super insertReactSubview:subview atIndex:index];
+  
+  [self dirtyLayout];
+  
+  if (![subview isKindOfClass:[RCTVirtualTextShadowView class]]) {
+    YGNodeSetDirtiedFunc(subview.yogaNode, RCTInlineViewYogaNodeDirtied);
+  }
+}
+
+- (void)removeReactSubview:(RCTShadowView *)subview
+{
+  if (![subview isKindOfClass:[RCTVirtualTextShadowView class]]) {
+    YGNodeSetDirtiedFunc(subview.yogaNode, NULL);
+  }
+  
+  [self dirtyLayout];
+  
+  [super removeReactSubview:subview];
+}
+
 #pragma mark - attributedString
 
 - (NSAttributedString *)attributedTextWithBaseTextAttributes:(nullable RCTTextAttributes *)baseTextAttributes
diff --git a/Libraries/Text/BaseText/RCTBaseTextViewManager.h b/Libraries/Text/BaseText/RCTBaseTextViewManager.h
index b6c105e3759f54..782a47610d78a6 100644
--- a/Libraries/Text/BaseText/RCTBaseTextViewManager.h
+++ b/Libraries/Text/BaseText/RCTBaseTextViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/BaseText/RCTBaseTextViewManager.m b/Libraries/Text/BaseText/RCTBaseTextViewManager.m
index 2cf43ebf38cf6c..247c636d9cda64 100644
--- a/Libraries/Text/BaseText/RCTBaseTextViewManager.m
+++ b/Libraries/Text/BaseText/RCTBaseTextViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -36,6 +36,7 @@ - (RCTShadowView *)shadowView
 RCT_REMAP_SHADOW_PROPERTY(fontStyle, textAttributes.fontStyle, NSString)
 RCT_REMAP_SHADOW_PROPERTY(fontVariant, textAttributes.fontVariant, NSArray)
 RCT_REMAP_SHADOW_PROPERTY(allowFontScaling, textAttributes.allowFontScaling, BOOL)
+RCT_REMAP_SHADOW_PROPERTY(maxFontSizeMultiplier, textAttributes.maxFontSizeMultiplier, CGFloat)
 RCT_REMAP_SHADOW_PROPERTY(letterSpacing, textAttributes.letterSpacing, CGFloat)
 // Paragraph Styles
 RCT_REMAP_SHADOW_PROPERTY(lineHeight, textAttributes.lineHeight, CGFloat)
diff --git a/Libraries/Text/RCTConvert+Text.h b/Libraries/Text/RCTConvert+Text.h
index 7c43cfca8943ab..0a33ab38b0be47 100644
--- a/Libraries/Text/RCTConvert+Text.h
+++ b/Libraries/Text/RCTConvert+Text.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RCTConvert+Text.m b/Libraries/Text/RCTConvert+Text.m
index aaf7c1383c1c79..cd91ba9623478a 100644
--- a/Libraries/Text/RCTConvert+Text.m
+++ b/Libraries/Text/RCTConvert+Text.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RCTTextAttributes.h b/Libraries/Text/RCTTextAttributes.h
index 663ec5a742c708..5c65ed9eafa326 100644
--- a/Libraries/Text/RCTTextAttributes.h
+++ b/Libraries/Text/RCTTextAttributes.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -31,6 +31,7 @@ extern NSString *const RCTTextAttributesTagAttributeName;
 @property (nonatomic, copy, nullable) NSString *fontFamily;
 @property (nonatomic, assign) CGFloat fontSize;
 @property (nonatomic, assign) CGFloat fontSizeMultiplier;
+@property (nonatomic, assign) CGFloat maxFontSizeMultiplier;
 @property (nonatomic, copy, nullable) NSString *fontWeight;
 @property (nonatomic, copy, nullable) NSString *fontStyle;
 @property (nonatomic, copy, nullable) NSArray<NSString *> *fontVariant;
@@ -71,7 +72,7 @@ extern NSString *const RCTTextAttributesTagAttributeName;
 - (UIFont *)effectiveFont;
 
 /**
- * Font size multiplier reflects `allowFontScaling` and `fontSizeMultiplier`.
+ * Font size multiplier reflects `allowFontScaling`, `fontSizeMultiplier`, and `maxFontSizeMultiplier`.
  */
 - (CGFloat)effectiveFontSizeMultiplier;
 
diff --git a/Libraries/Text/RCTTextAttributes.m b/Libraries/Text/RCTTextAttributes.m
index 4309138d00fe09..f1bf6beab67f1a 100644
--- a/Libraries/Text/RCTTextAttributes.m
+++ b/Libraries/Text/RCTTextAttributes.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,6 +24,7 @@ - (instancetype)init
     _lineHeight = NAN;
     _textDecorationStyle = NSUnderlineStyleSingle;
     _fontSizeMultiplier = NAN;
+    _maxFontSizeMultiplier = NAN;
     _alignment = NSTextAlignmentNatural;
     _baseWritingDirection = NSWritingDirectionNatural;
     _textShadowRadius = NAN;
@@ -49,6 +50,7 @@ - (void)applyTextAttributes:(RCTTextAttributes *)textAttributes
   _fontFamily = textAttributes->_fontFamily ?: _fontFamily;
   _fontSize = !isnan(textAttributes->_fontSize) ? textAttributes->_fontSize : _fontSize;
   _fontSizeMultiplier = !isnan(textAttributes->_fontSizeMultiplier) ? textAttributes->_fontSizeMultiplier : _fontSizeMultiplier;
+  _maxFontSizeMultiplier = !isnan(textAttributes->_maxFontSizeMultiplier) ? textAttributes->_maxFontSizeMultiplier : _maxFontSizeMultiplier;
   _fontWeight = textAttributes->_fontWeight ?: _fontWeight;
   _fontStyle = textAttributes->_fontStyle ?: _fontStyle;
   _fontVariant = textAttributes->_fontVariant ?: _fontVariant;
@@ -191,7 +193,15 @@ - (UIFont *)effectiveFont
 
 - (CGFloat)effectiveFontSizeMultiplier
 {
-  return !RCTHasFontHandlerSet() && _allowFontScaling && !isnan(_fontSizeMultiplier) ? _fontSizeMultiplier : 1.0;
+  bool fontScalingEnabled = !RCTHasFontHandlerSet() && _allowFontScaling;
+
+  if (fontScalingEnabled) {
+    CGFloat fontSizeMultiplier = !isnan(_fontSizeMultiplier) ? _fontSizeMultiplier : 1.0;
+    CGFloat maxFontSizeMultiplier = !isnan(_maxFontSizeMultiplier) ? _maxFontSizeMultiplier : 0.0;
+    return maxFontSizeMultiplier >= 1.0 ? fminf(maxFontSizeMultiplier, fontSizeMultiplier) : fontSizeMultiplier;
+  } else {
+    return 1.0;
+  }
 }
 
 - (UIColor *)effectiveForegroundColor
@@ -260,6 +270,7 @@ - (BOOL)isEqual:(RCTTextAttributes *)textAttributes
     RCTTextAttributesCompareObjects(_fontFamily) &&
     RCTTextAttributesCompareFloats(_fontSize) &&
     RCTTextAttributesCompareFloats(_fontSizeMultiplier) &&
+    RCTTextAttributesCompareFloats(_maxFontSizeMultiplier) &&
     RCTTextAttributesCompareStrings(_fontWeight) &&
     RCTTextAttributesCompareObjects(_fontStyle) &&
     RCTTextAttributesCompareObjects(_fontVariant) &&
diff --git a/Libraries/Text/RCTTextTransform.h b/Libraries/Text/RCTTextTransform.h
index eddebd0f0c207e..af50fe6316e8e1 100644
--- a/Libraries/Text/RCTTextTransform.h
+++ b/Libraries/Text/RCTTextTransform.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RawText/RCTRawTextShadowView.h b/Libraries/Text/RawText/RCTRawTextShadowView.h
index 51760308ba090e..ca875b334bf065 100644
--- a/Libraries/Text/RawText/RCTRawTextShadowView.h
+++ b/Libraries/Text/RawText/RCTRawTextShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RawText/RCTRawTextShadowView.m b/Libraries/Text/RawText/RCTRawTextShadowView.m
index 12c01d1b5f6af5..823058626ea186 100644
--- a/Libraries/Text/RawText/RCTRawTextShadowView.m
+++ b/Libraries/Text/RawText/RCTRawTextShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RawText/RCTRawTextViewManager.h b/Libraries/Text/RawText/RCTRawTextViewManager.h
index 8ff302815527e7..d67d56aa8b92e7 100644
--- a/Libraries/Text/RawText/RCTRawTextViewManager.h
+++ b/Libraries/Text/RawText/RCTRawTextViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/RawText/RCTRawTextViewManager.m b/Libraries/Text/RawText/RCTRawTextViewManager.m
index f159f73d3b92bb..641f4e7d30cbf4 100644
--- a/Libraries/Text/RawText/RCTRawTextViewManager.m
+++ b/Libraries/Text/RawText/RCTRawTextViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/Text.js b/Libraries/Text/Text.js
index 2a0a939f876af7..35df7249cade56 100644
--- a/Libraries/Text/Text.js
+++ b/Libraries/Text/Text.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,15 +10,15 @@
 
 'use strict';
 
+const DeprecatedTextPropTypes = require('DeprecatedTextPropTypes');
 const React = require('React');
 const ReactNativeViewAttributes = require('ReactNativeViewAttributes');
 const TextAncestor = require('TextAncestor');
-const TextPropTypes = require('TextPropTypes');
 const Touchable = require('Touchable');
 const UIManager = require('UIManager');
 
 const createReactNativeComponentClass = require('createReactNativeComponentClass');
-const nullthrows = require('fbjs/lib/nullthrows');
+const nullthrows = require('nullthrows');
 const processColor = require('processColor');
 
 import type {PressEvent} from 'CoreEventTypes';
@@ -27,10 +27,10 @@ import type {PressRetentionOffset, TextProps} from 'TextProps';
 
 type ResponseHandlers = $ReadOnly<{|
   onStartShouldSetResponder: () => boolean,
-  onResponderGrant: (event: SyntheticEvent<>, dispatchID: string) => void,
-  onResponderMove: (event: SyntheticEvent<>) => void,
-  onResponderRelease: (event: SyntheticEvent<>) => void,
-  onResponderTerminate: (event: SyntheticEvent<>) => void,
+  onResponderGrant: (event: PressEvent, dispatchID: string) => void,
+  onResponderMove: (event: PressEvent) => void,
+  onResponderRelease: (event: PressEvent) => void,
+  onResponderTerminate: (event: PressEvent) => void,
   onResponderTerminationRequest: () => boolean,
 |}>;
 
@@ -58,12 +58,19 @@ const viewConfig = {
     numberOfLines: true,
     ellipsizeMode: true,
     allowFontScaling: true,
+    maxFontSizeMultiplier: true,
     disabled: true,
     selectable: true,
     selectionColor: true,
     adjustsFontSizeToFit: true,
     minimumFontScale: true,
     textBreakStrategy: true,
+    onTextLayout: true,
+  },
+  directEventTypes: {
+    topTextLayout: {
+      registrationName: 'onTextLayout',
+    },
   },
   uiViewClassName: 'RCTText',
 };
@@ -86,12 +93,12 @@ class TouchableText extends React.Component<Props, State> {
   touchableHandleLongPress: ?(event: PressEvent) => void;
   touchableHandlePress: ?(event: PressEvent) => void;
   touchableHandleResponderGrant: ?(
-    event: SyntheticEvent<>,
+    event: PressEvent,
     dispatchID: string,
   ) => void;
-  touchableHandleResponderMove: ?(event: SyntheticEvent<>) => void;
-  touchableHandleResponderRelease: ?(event: SyntheticEvent<>) => void;
-  touchableHandleResponderTerminate: ?(event: SyntheticEvent<>) => void;
+  touchableHandleResponderMove: ?(event: PressEvent) => void;
+  touchableHandleResponderRelease: ?(event: PressEvent) => void;
+  touchableHandleResponderTerminate: ?(event: PressEvent) => void;
   touchableHandleResponderTerminationRequest: ?() => boolean;
 
   state = {
@@ -101,10 +108,12 @@ class TouchableText extends React.Component<Props, State> {
     responseHandlers: null,
   };
 
-  static getDerivedStateFromProps(nextProps: Props, prevState: State): ?State {
+  static getDerivedStateFromProps(
+    nextProps: Props,
+    prevState: State,
+  ): $Shape<State> | null {
     return prevState.responseHandlers == null && isTouchable(nextProps)
       ? {
-          ...prevState,
           responseHandlers: prevState.createResponderHandlers(),
         }
       : null;
@@ -164,25 +173,25 @@ class TouchableText extends React.Component<Props, State> {
         }
         return shouldSetResponder;
       },
-      onResponderGrant: (event: SyntheticEvent<>, dispatchID: string): void => {
+      onResponderGrant: (event: PressEvent, dispatchID: string): void => {
         nullthrows(this.touchableHandleResponderGrant)(event, dispatchID);
         if (this.props.onResponderGrant != null) {
           this.props.onResponderGrant.call(this, event, dispatchID);
         }
       },
-      onResponderMove: (event: SyntheticEvent<>): void => {
+      onResponderMove: (event: PressEvent): void => {
         nullthrows(this.touchableHandleResponderMove)(event);
         if (this.props.onResponderMove != null) {
           this.props.onResponderMove.call(this, event);
         }
       },
-      onResponderRelease: (event: SyntheticEvent<>): void => {
+      onResponderRelease: (event: PressEvent): void => {
         nullthrows(this.touchableHandleResponderRelease)(event);
         if (this.props.onResponderRelease != null) {
           this.props.onResponderRelease.call(this, event);
         }
       },
-      onResponderTerminate: (event: SyntheticEvent<>): void => {
+      onResponderTerminate: (event: PressEvent): void => {
         nullthrows(this.touchableHandleResponderTerminate)(event);
         if (this.props.onResponderTerminate != null) {
           this.props.onResponderTerminate.call(this, event);
@@ -251,12 +260,13 @@ const RCTText = createReactNativeComponentClass(
 );
 
 const RCTVirtualText =
-  UIManager.RCTVirtualText == null
+  UIManager.getViewManagerConfig('RCTVirtualText') == null
     ? RCTText
     : createReactNativeComponentClass('RCTVirtualText', () => ({
         validAttributes: {
           ...ReactNativeViewAttributes.UIView,
           isHighlighted: true,
+          maxFontSizeMultiplier: true,
         },
         uiViewClassName: 'RCTVirtualText',
       }));
@@ -269,8 +279,9 @@ const Text = (
 };
 // $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
 const TextToExport = React.forwardRef(Text);
+TextToExport.displayName = 'Text';
 
 // TODO: Deprecate this.
-TextToExport.propTypes = TextPropTypes;
+TextToExport.propTypes = DeprecatedTextPropTypes;
 
 module.exports = (TextToExport: Class<NativeComponent<TextProps>>);
diff --git a/Libraries/Text/Text/NSTextStorage+FontScaling.h b/Libraries/Text/Text/NSTextStorage+FontScaling.h
index 8ea245204bb95c..bd92277404b1a3 100644
--- a/Libraries/Text/Text/NSTextStorage+FontScaling.h
+++ b/Libraries/Text/Text/NSTextStorage+FontScaling.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/Text/NSTextStorage+FontScaling.m b/Libraries/Text/Text/NSTextStorage+FontScaling.m
index e9ab92f4b8a171..4bdeb269c448ff 100644
--- a/Libraries/Text/Text/NSTextStorage+FontScaling.m
+++ b/Libraries/Text/Text/NSTextStorage+FontScaling.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/Text/RCTTextShadowView.h b/Libraries/Text/Text/RCTTextShadowView.h
index d62748df8169cf..aaaf8e3d8db51d 100644
--- a/Libraries/Text/Text/RCTTextShadowView.h
+++ b/Libraries/Text/Text/RCTTextShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,6 +19,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, assign) NSLineBreakMode lineBreakMode;
 @property (nonatomic, assign) BOOL adjustsFontSizeToFit;
 @property (nonatomic, assign) CGFloat minimumFontScale;
+@property (nonatomic, copy) RCTDirectEventBlock onTextLayout;
 
 - (void)uiManagerWillPerformMounting;
 
diff --git a/Libraries/Text/Text/RCTTextShadowView.m b/Libraries/Text/Text/RCTTextShadowView.m
index 9986ce620cb808..4bf4f33734e2fc 100644
--- a/Libraries/Text/Text/RCTTextShadowView.m
+++ b/Libraries/Text/Text/RCTTextShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -153,10 +153,9 @@ - (void)postprocessAttributedText:(NSMutableAttributedString *)attributedText
       [attributedText addAttribute:NSBaselineOffsetAttributeName
                              value:@(baseLineOffset)
                              range:range];
-     }
-   ];
-
-   [attributedText endEditing];
+     }];
+  
+  [attributedText endEditing];
 }
 
 - (NSAttributedString *)attributedTextWithMeasuredAttachmentsThatFitSize:(CGSize)size
@@ -298,6 +297,9 @@ - (void)layoutSubviewsWithContext:(RCTLayoutContext)layoutContext
         RCTRoundPixelValue(attachmentSize.height, [self scale])
 #endif // ]TODO(macOS ISS#2323203)
       }};
+      
+      NSRange truncatedGlyphRange = [layoutManager truncatedGlyphRangeInLineFragmentForGlyphAtIndex:range.location];
+      BOOL viewIsTruncated = NSIntersectionRange(range, truncatedGlyphRange).length != 0;
 
       RCTLayoutContext localLayoutContext = layoutContext;
       localLayoutContext.absolutePosition.x += frame.origin.x;
@@ -308,12 +310,43 @@ - (void)layoutSubviewsWithContext:(RCTLayoutContext)layoutContext
                         layoutDirection:self.layoutMetrics.layoutDirection
                           layoutContext:localLayoutContext];
 
-      // Reinforcing a proper frame origin for the Shadow View.
       RCTLayoutMetrics localLayoutMetrics = shadowView.layoutMetrics;
-      localLayoutMetrics.frame.origin = frame.origin;
+      localLayoutMetrics.frame.origin = frame.origin; // Reinforcing a proper frame origin for the Shadow View.
+      if (viewIsTruncated) {
+        localLayoutMetrics.displayType = RCTDisplayTypeNone;
+      }
       [shadowView layoutWithMetrics:localLayoutMetrics layoutContext:localLayoutContext];
     }
   ];
+
+
+  if (_onTextLayout) {
+    NSMutableArray *lineData = [NSMutableArray new];
+    [layoutManager
+     enumerateLineFragmentsForGlyphRange:glyphRange
+     usingBlock:^(CGRect overallRect, CGRect usedRect, NSTextContainer * _Nonnull usedTextContainer, NSRange lineGlyphRange, BOOL * _Nonnull stop) {
+       NSRange range = [layoutManager characterRangeForGlyphRange:lineGlyphRange actualGlyphRange:nil];
+       NSString *renderedString = [textStorage.string substringWithRange:range];
+       UIFont *font = [[textStorage attributedSubstringFromRange:range] attribute:NSFontAttributeName atIndex:0 effectiveRange:nil];
+       [lineData addObject:
+        @{
+          @"text": renderedString,
+          @"x": @(usedRect.origin.x),
+          @"y": @(usedRect.origin.y),
+          @"width": @(usedRect.size.width),
+          @"height": @(usedRect.size.height),
+          @"descender": @(-font.descender),
+          @"capHeight": @(font.capHeight),
+          @"ascender": @(font.ascender),
+          @"xHeight": @(font.xHeight),
+          }];
+     }];
+    NSDictionary *payload =
+    @{
+      @"lines": lineData,
+      };
+    _onTextLayout(payload);
+  }
 }
 
 - (CGFloat)lastBaselineForSize:(CGSize)size
diff --git a/Libraries/Text/Text/RCTTextView.h b/Libraries/Text/Text/RCTTextView.h
index fabdd5e2dd4656..406ecf5c6b373b 100644
--- a/Libraries/Text/Text/RCTTextView.h
+++ b/Libraries/Text/Text/RCTTextView.h
@@ -1,10 +1,12 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
+#import <React/RCTComponent.h>
+
 #import <React/RCTUIKit.h> // TODO(macOS ISS#2323203)
 
 NS_ASSUME_NONNULL_BEGIN
diff --git a/Libraries/Text/Text/RCTTextView.m b/Libraries/Text/Text/RCTTextView.m
index 8088eca8df27ba..4623736a2ae7cb 100644
--- a/Libraries/Text/Text/RCTTextView.m
+++ b/Libraries/Text/Text/RCTTextView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/Text/RCTTextViewManager.h b/Libraries/Text/Text/RCTTextViewManager.h
index d11e4b5919d066..e9586b3d41b892 100644
--- a/Libraries/Text/Text/RCTTextViewManager.h
+++ b/Libraries/Text/Text/RCTTextViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/Text/RCTTextViewManager.m b/Libraries/Text/Text/RCTTextViewManager.m
index 59e0be78f1f84c..9bc12b883f1b64 100644
--- a/Libraries/Text/Text/RCTTextViewManager.m
+++ b/Libraries/Text/Text/RCTTextViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,7 +24,6 @@ @interface RCTTextViewManager () <RCTUIManagerObserver>
 @implementation RCTTextViewManager
 {
   NSHashTable<RCTTextShadowView *> *_shadowViews;
-  CGFloat _fontSizeMultiplier;
 }
 
 RCT_EXPORT_MODULE(RCTText)
@@ -34,6 +33,8 @@ @implementation RCTTextViewManager
 RCT_REMAP_SHADOW_PROPERTY(adjustsFontSizeToFit, adjustsFontSizeToFit, BOOL)
 RCT_REMAP_SHADOW_PROPERTY(minimumFontScale, minimumFontScale, CGFloat)
 
+RCT_EXPORT_SHADOW_PROPERTY(onTextLayout, RCTDirectEventBlock)
+
 RCT_EXPORT_VIEW_PROPERTY(selectable, BOOL)
 
 - (void)setBridge:(RCTBridge *)bridge
diff --git a/Libraries/Text/TextAncestor.js b/Libraries/Text/TextAncestor.js
index 53a109c9d88b56..e3463859ab43f6 100644
--- a/Libraries/Text/TextAncestor.js
+++ b/Libraries/Text/TextAncestor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,4 +15,7 @@ const React = require('React');
 /**
  * Whether the current element is the descendant of a <Text> element.
  */
+/* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+ * found when Flow v0.85 was deployed. To see the error, delete this comment
+ * and run Flow. */
 module.exports = React.createContext(false);
diff --git a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
index 97466f4d455eba..fca709148359bb 100644
--- a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
+++ b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.m b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.m
index 7a5725d439f07c..d529c8ff4bf460 100644
--- a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.m
+++ b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
index db6c62751ab828..18dc486c7eb971 100644
--- a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
+++ b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.m b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.m
index 525c0305c57036..f337550c9feb94 100644
--- a/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.m
+++ b/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Multiline/RCTUITextView.h b/Libraries/Text/TextInput/Multiline/RCTUITextView.h
index 1f66bd47c76f23..ab8d5b6e42d578 100644
--- a/Libraries/Text/TextInput/Multiline/RCTUITextView.h
+++ b/Libraries/Text/TextInput/Multiline/RCTUITextView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Multiline/RCTUITextView.m b/Libraries/Text/TextInput/Multiline/RCTUITextView.m
index 8d51db10f0f579..1f92f0853e658c 100644
--- a/Libraries/Text/TextInput/Multiline/RCTUITextView.m
+++ b/Libraries/Text/TextInput/Multiline/RCTUITextView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -190,12 +190,25 @@ - (void)setTextAlignment:(NSTextAlignment)textAlignment
 
 - (void)setAttributedText:(NSAttributedString *)attributedText
 {
+  // Using `setAttributedString:` while user is typing breaks some internal mechanics
+  // when entering complex input languages such as Chinese, Korean or Japanese.
+  // see: https://github.com/facebook/react-native/issues/19339
+
+  // We try to avoid calling this method as much as we can.
+  // If the text has changed, there is nothing we can do.
+  if (![super.attributedText.string isEqualToString:attributedText.string]) {
 #if !TARGET_OS_OSX // TODO(macOS ISS#2323203)
-  [super setAttributedText:attributedText];
+    [super setAttributedText:attributedText];
 #else // [TODO(macOS ISS#2323203)
-  [self.textStorage setAttributedString:attributedText];
+    [self.textStorage setAttributedString:attributedText];
 #endif // ]TODO(macOS ISS#2323203)
-  
+  } else {
+  // But if the text is preserved, we just copying the attributes from the source string.
+    if (![super.attributedText isEqualToAttributedString:attributedText]) {
+      [self copyTextAttributesFrom:attributedText];
+    }
+  }
+
   [self textDidChange];
 }
 
@@ -433,4 +446,20 @@ - (void)deleteBackward {
 }
 #endif // ]TODO(OSS Candidate ISS#2710739)
 
+#pragma mark - Utility Methods
+
+- (void)copyTextAttributesFrom:(NSAttributedString *)sourceString
+{
+  [self.textStorage beginEditing];
+
+  NSTextStorage *textStorage = self.textStorage;
+  [sourceString enumerateAttributesInRange:NSMakeRange(0, sourceString.length)
+                                   options:NSAttributedStringEnumerationReverse
+                                usingBlock:^(NSDictionary<NSAttributedStringKey,id> * _Nonnull attrs, NSRange range, BOOL * _Nonnull stop) {
+                                  [textStorage setAttributes:attrs range:range];
+                                }];
+
+  [self.textStorage endEditing];
+}
+
 @end
diff --git a/Libraries/Text/TextInput/RCTBackedTextInputDelegate.h b/Libraries/Text/TextInput/RCTBackedTextInputDelegate.h
index d9dad9bfd4b5d2..71b739c8f88020 100644
--- a/Libraries/Text/TextInput/RCTBackedTextInputDelegate.h
+++ b/Libraries/Text/TextInput/RCTBackedTextInputDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.h b/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.h
index 367510eaf4deb9..2029970b543e74 100644
--- a/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.h
+++ b/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.m b/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.m
index 7ff4a0a4df2830..20b1d09b854707 100644
--- a/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.m
+++ b/Libraries/Text/TextInput/RCTBackedTextInputDelegateAdapter.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBackedTextInputViewProtocol.h b/Libraries/Text/TextInput/RCTBackedTextInputViewProtocol.h
index 96f1f5940143ad..19f411e84bf7b5 100644
--- a/Libraries/Text/TextInput/RCTBackedTextInputViewProtocol.h
+++ b/Libraries/Text/TextInput/RCTBackedTextInputViewProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
index ea8abd3fdcee78..8b4244626ffc3f 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
+++ b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
index a32f09c3a1dd49..c87b80c07de5f0 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputView.h b/Libraries/Text/TextInput/RCTBaseTextInputView.h
index 64288721325c07..d59a4e312e2a27 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputView.h
+++ b/Libraries/Text/TextInput/RCTBaseTextInputView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputView.m b/Libraries/Text/TextInput/RCTBaseTextInputView.m
index ded5c32c90934d..21a4227e39ee43 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -111,16 +111,26 @@ - (BOOL)textOf:(NSAttributedString*)newText equals:(NSAttributedString*)oldText{
   // Similarly, when the user is in the middle of inputting some text in Japanese/Chinese, there will be styling on the
   // text that we should disregard. See https://developer.apple.com/documentation/uikit/uitextinput/1614489-markedtextrange?language=objc
   // for more info.
+  // If the user added an emoji, the sytem adds a font attribute for the emoji and stores the original font in NSOriginalFont.
   // Lastly, when entering a password, etc., there will be additional styling on the field as the native text view
   // handles showing the last character for a split second.
+  __block BOOL fontHasBeenUpdatedBySystem = false;
+  [oldText enumerateAttribute:@"NSOriginalFont" inRange:NSMakeRange(0, oldText.length) options:0 usingBlock:^(id value, NSRange range, BOOL *stop) {
+    if (value){
+      fontHasBeenUpdatedBySystem = true;
+    }
+  }];
+
   BOOL shouldFallbackToBareTextComparison =
 #if !TARGET_OS_OSX // TODO(macOS ISS#2323203)
     [self.backedTextInputView.textInputMode.primaryLanguage isEqualToString:@"dictation"] ||
     self.backedTextInputView.markedTextRange ||
-    self.backedTextInputView.isSecureTextEntry;
+    self.backedTextInputView.isSecureTextEntry ||
+    fontHasBeenUpdatedBySystem;
 #else // [TODO(macOS ISS#2323203)
     NO;
 #endif // ]TODO(macOS ISS#2323203)
+
   if (shouldFallbackToBareTextComparison) {
     return ([newText.string isEqualToString:oldText.string]);
   } else {
@@ -232,9 +242,65 @@ - (void)setTextContentType:(NSString *)type
 {
   #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
     if (@available(iOS 10.0, *)) {
+
+        static dispatch_once_t onceToken;
+        static NSDictionary<NSString *, NSString *> *contentTypeMap;
+
+        dispatch_once(&onceToken, ^{
+          contentTypeMap = @{@"none": @"",
+                             @"URL": UITextContentTypeURL,
+                             @"addressCity": UITextContentTypeAddressCity,
+                             @"addressCityAndState":UITextContentTypeAddressCityAndState,
+                             @"addressState": UITextContentTypeAddressState,
+                             @"countryName": UITextContentTypeCountryName,
+                             @"creditCardNumber": UITextContentTypeCreditCardNumber,
+                             @"emailAddress": UITextContentTypeEmailAddress,
+                             @"familyName": UITextContentTypeFamilyName,
+                             @"fullStreetAddress": UITextContentTypeFullStreetAddress,
+                             @"givenName": UITextContentTypeGivenName,
+                             @"jobTitle": UITextContentTypeJobTitle,
+                             @"location": UITextContentTypeLocation,
+                             @"middleName": UITextContentTypeMiddleName,
+                             @"name": UITextContentTypeName,
+                             @"namePrefix": UITextContentTypeNamePrefix,
+                             @"nameSuffix": UITextContentTypeNameSuffix,
+                             @"nickname": UITextContentTypeNickname,
+                             @"organizationName": UITextContentTypeOrganizationName,
+                             @"postalCode": UITextContentTypePostalCode,
+                             @"streetAddressLine1": UITextContentTypeStreetAddressLine1,
+                             @"streetAddressLine2": UITextContentTypeStreetAddressLine2,
+                             @"sublocality": UITextContentTypeSublocality,
+                             @"telephoneNumber": UITextContentTypeTelephoneNumber,
+                             };
+
+          #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
+            if (@available(iOS 11.0, *)) {
+              NSDictionary<NSString *, NSString *> * iOS11extras = @{@"username": UITextContentTypeUsername,
+                                                                     @"password": UITextContentTypePassword};
+
+              NSMutableDictionary<NSString *, NSString *> * iOS11baseMap = [contentTypeMap mutableCopy];
+              [iOS11baseMap addEntriesFromDictionary:iOS11extras];
+
+              contentTypeMap = [iOS11baseMap copy];
+            }
+          #endif
+
+          #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 120000 /* __IPHONE_12_0 */
+            if (@available(iOS 12.0, *)) {
+              NSDictionary<NSString *, NSString *> * iOS12extras = @{@"newPassword": UITextContentTypeNewPassword,
+                                                                     @"oneTimeCode": UITextContentTypeOneTimeCode};
+
+              NSMutableDictionary<NSString *, NSString *> * iOS12baseMap = [contentTypeMap mutableCopy];
+              [iOS12baseMap addEntriesFromDictionary:iOS12extras];
+
+              contentTypeMap = [iOS12baseMap copy];
+            }
+          #endif
+        });
+
         // Setting textContentType to an empty string will disable any
         // default behaviour, like the autofill bar for password inputs
-        self.backedTextInputView.textContentType = [type isEqualToString:@"none"] ? @"" : type;
+        self.backedTextInputView.textContentType = contentTypeMap[type] ?: type;
     }
   #endif
 }
@@ -375,15 +441,10 @@ - (BOOL)textInputShouldChangeTextInRange:(NSRange)range replacementText:(NSStrin
   NSString *predictedText = [self predictedText]; // TODO(OSS Candidate ISS#2710739)
   NSString *previousText = [predictedText substringWithRange:range] ?: @"";
 
-  // After clearing the text by replacing it with an empty string, `_predictedText`
-  // still preserves the deleted text.
-  // As the first character in the TextInput always comes with the range value (0, 0),
-  // we should check the range value in order to avoid appending a character to the deleted string
-  // (which caused the issue #18374)
-  if (!NSEqualRanges(range, NSMakeRange(0, 0)) && predictedText) { // TODO(OSS Candidate ISS#2710739)
-    [self setPredictedText:[predictedText stringByReplacingCharactersInRange:range withString:text]]; // TODO(OSS Candidate ISS#2710739)
-  } else {
+  if (!_predictedText || backedTextInputView.attributedText.string.length == 0) {
     [self setPredictedText:text]; // TODO(OSS Candidate ISS#2710739)
+  } else {
+    [self setPredictedText:[predictedText stringByReplacingCharactersInRange:range withString:text]]; // TODO(OSS Candidate ISS#2710739)
   }
 
   if (_onTextInput) {
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h b/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
index c370779b206610..4eb39b1d052cc6 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
+++ b/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTBaseTextInputViewManager.m b/Libraries/Text/TextInput/RCTBaseTextInputViewManager.m
index 9c816fc59ce346..e9857a03e70148 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputViewManager.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h b/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
index c63fdf48158acf..0e73aaca84c669 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
+++ b/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryShadowView.m b/Libraries/Text/TextInput/RCTInputAccessoryShadowView.m
index 6798744148e392..68a6681df3682d 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryShadowView.m
+++ b/Libraries/Text/TextInput/RCTInputAccessoryShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryView.h b/Libraries/Text/TextInput/RCTInputAccessoryView.h
index 3a47a895d523b8..d2d573ab96d31e 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryView.h
+++ b/Libraries/Text/TextInput/RCTInputAccessoryView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryView.m b/Libraries/Text/TextInput/RCTInputAccessoryView.m
index 1f66e473966c06..1535f9719f9f16 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryView.m
+++ b/Libraries/Text/TextInput/RCTInputAccessoryView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -42,7 +42,7 @@ - (BOOL)canBecomeFirstResponder
 
 - (void)reactSetFrame:(CGRect)frame
 {
-  [_inputAccessoryView setFrame:frame];
+  [_inputAccessoryView reactSetFrame:frame];
 
   if (_shouldBecomeFirstResponder) {
     _shouldBecomeFirstResponder = NO;
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h b/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
index 04f161645a7be4..0058b2ec3d5e79 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
+++ b/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryViewContent.m b/Libraries/Text/TextInput/RCTInputAccessoryViewContent.m
index 5a9f142c6108a5..6cd4350e25c55c 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryViewContent.m
+++ b/Libraries/Text/TextInput/RCTInputAccessoryViewContent.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,6 +12,7 @@
 @implementation RCTInputAccessoryViewContent
 {
   UIView *_safeAreaContainer;
+  NSLayoutConstraint *_heightConstraint;
 }
 
 - (instancetype)init
@@ -19,31 +20,48 @@ - (instancetype)init
   if (self = [super init]) {
     _safeAreaContainer = [UIView new];
     [self addSubview:_safeAreaContainer];
-  }
-  return self;
-}
 
-- (void)didMoveToSuperview
-{
+    // Use autolayout to position the view properly and take into account
+    // safe area insets on iPhone X.
+    // TODO: Support rotation, anchor to left and right without breaking frame x coordinate (T27974328).
+    self.autoresizingMask = UIViewAutoresizingFlexibleHeight;
+    _safeAreaContainer.translatesAutoresizingMaskIntoConstraints = NO;
+
+    _heightConstraint = [_safeAreaContainer.heightAnchor constraintEqualToConstant:0];
+    _heightConstraint.active = YES;
 
-#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
-  // Avoid the home pill (in portrait mode)
-  // TODO: Support rotation, anchor to left and right without breaking frame x coordinate (T27974328).
-  if (@available(iOS 11.0, *)) {
-    if (self.window) {
-      [_safeAreaContainer.bottomAnchor
-       constraintLessThanOrEqualToSystemSpacingBelowAnchor:self.window.safeAreaLayoutGuide.bottomAnchor
-       multiplier:1.0f].active = YES;
+    if (@available(iOS 11.0, *)) {
+      [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.bottomAnchor].active = YES;
+      [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.topAnchor].active = YES;
+      [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.leadingAnchor].active = YES;
+      [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.trailingAnchor].active = YES;
+    } else {
+      [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.bottomAnchor].active = YES;
+      [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.topAnchor].active = YES;
+      [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.leadingAnchor].active = YES;
+      [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.trailingAnchor].active = YES;
     }
   }
-#endif
+  return self;
+}
 
+- (CGSize)intrinsicContentSize
+{
+  // This is needed so the view size is based on autolayout constraints.
+  return CGSizeZero;
 }
 
-- (void)setFrame:(CGRect)frame
+- (void)reactSetFrame:(CGRect)frame
 {
-  [super setFrame:frame];
+  // We still need to set the frame here, otherwise it won't be
+  // measured until moved to the window during the keyboard opening
+  // animation. If this happens, the height will be animated from 0 to
+  // its actual size and we don't want that.
+  [self setFrame:frame];
   [_safeAreaContainer setFrame:frame];
+
+  _heightConstraint.constant = frame.size.height;
+  [self layoutIfNeeded];
 }
 
 - (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)index
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h b/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
index 590723a5631716..cada7d44014fc0 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
+++ b/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTInputAccessoryViewManager.m b/Libraries/Text/TextInput/RCTInputAccessoryViewManager.m
index 490aa841aa49a2..5fe42d86efb267 100644
--- a/Libraries/Text/TextInput/RCTInputAccessoryViewManager.m
+++ b/Libraries/Text/TextInput/RCTInputAccessoryViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTTextSelection.h b/Libraries/Text/TextInput/RCTTextSelection.h
index b77746a91647d6..0b4b9a029295df 100644
--- a/Libraries/Text/TextInput/RCTTextSelection.h
+++ b/Libraries/Text/TextInput/RCTTextSelection.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/RCTTextSelection.m b/Libraries/Text/TextInput/RCTTextSelection.m
index 436228c5545ab2..082b8fd3e48f82 100644
--- a/Libraries/Text/TextInput/RCTTextSelection.m
+++ b/Libraries/Text/TextInput/RCTTextSelection.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
index 1c99fed6354501..c5ca8ee769996b 100644
--- a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
+++ b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.m b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.m
index 67d889d238d553..6ecc26a667ed3a 100644
--- a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.m
+++ b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
index b19ff183925daa..5662c7928fae40 100644
--- a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
+++ b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.m b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.m
index 4399c3677ff6ac..5a2af1cbcb2f1a 100644
--- a/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.m
+++ b/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTUITextField.h b/Libraries/Text/TextInput/Singleline/RCTUITextField.h
index 7f5335460441f6..f1a02b99753c61 100644
--- a/Libraries/Text/TextInput/Singleline/RCTUITextField.h
+++ b/Libraries/Text/TextInput/Singleline/RCTUITextField.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextInput/Singleline/RCTUITextField.m b/Libraries/Text/TextInput/Singleline/RCTUITextField.m
index 23e0039ce7f7fc..3d815b0216158f 100644
--- a/Libraries/Text/TextInput/Singleline/RCTUITextField.m
+++ b/Libraries/Text/TextInput/Singleline/RCTUITextField.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/TextPropTypes.js b/Libraries/Text/TextPropTypes.js
index 5a3c99d7378531..dddb43ea00726b 100644
--- a/Libraries/Text/TextPropTypes.js
+++ b/Libraries/Text/TextPropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,13 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
-const EdgeInsetsPropType = require('EdgeInsetsPropType');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const DeprecatedEdgeInsetsPropType = require('DeprecatedEdgeInsetsPropType');
 const PropTypes = require('prop-types');
-const StyleSheetPropType = require('StyleSheetPropType');
+const DeprecatedStyleSheetPropType = require('DeprecatedStyleSheetPropType');
 const TextStylePropTypes = require('TextStylePropTypes');
 
-const stylePropType = StyleSheetPropType(TextStylePropTypes);
+const stylePropType = DeprecatedStyleSheetPropType(TextStylePropTypes);
 
 module.exports = {
   /**
@@ -62,7 +62,7 @@ module.exports = {
    *
    * See https://facebook.github.io/react-native/docs/text.html#pressretentionoffset
    */
-  pressRetentionOffset: EdgeInsetsPropType,
+  pressRetentionOffset: DeprecatedEdgeInsetsPropType,
   /**
    * Lets the user select text.
    *
@@ -74,7 +74,7 @@ module.exports = {
    *
    * See https://facebook.github.io/react-native/docs/text.html#selectioncolor
    */
-  selectionColor: ColorPropType,
+  selectionColor: DeprecatedColorPropType,
   /**
    * When `true`, no visual change is made when text is pressed down.
    *
@@ -100,6 +100,14 @@ module.exports = {
    * See https://facebook.github.io/react-native/docs/text.html#allowfontscaling
    */
   allowFontScaling: PropTypes.bool,
+  /**
+   * Specifies largest possible scale a font can reach when `allowFontScaling` is enabled.
+   * Possible values:
+   * `null/undefined` (default): inherit from the parent node or the global default (0)
+   * `0`: no max, ignore parent/global default
+   * `>= 1`: sets the maxFontSizeMultiplier of this node to this value
+   */
+  maxFontSizeMultiplier: PropTypes.number,
   /**
    * Indicates whether the view is an accessibility element.
    *
diff --git a/Libraries/Text/TextProps.js b/Libraries/Text/TextProps.js
index 183594e415617a..878e42bef6fd3f 100644
--- a/Libraries/Text/TextProps.js
+++ b/Libraries/Text/TextProps.js
@@ -1,23 +1,23 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @flow
+ * @flow strict-local
  * @format
  */
 
 'use strict';
 
-import type {AccessibilityRole} from 'ViewAccessibility';
-import type {AccessibilityState} from 'ViewAccessibility';
-import type {AccessibilityTrait} from 'ViewAccessibility';
-
-import type {Node} from 'react';
-
-import type {LayoutEvent, PressEvent} from 'CoreEventTypes';
+import type {LayoutEvent, PressEvent, TextLayoutEvent} from 'CoreEventTypes';
+import type React from 'React';
 import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
+import type {
+  AccessibilityRole,
+  AccessibilityStates,
+  AccessibilityTrait,
+} from 'ViewAccessibility';
 
 export type PressRetentionOffset = $ReadOnly<{|
   top: number,
@@ -30,36 +30,154 @@ export type PressRetentionOffset = $ReadOnly<{|
  * @see https://facebook.github.io/react-native/docs/text.html#reference
  */
 export type TextProps = $ReadOnly<{
+  /**
+   * Indicates whether the view is an accessibility element.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#accessible
+   */
   accessible?: ?boolean,
-  accessibilityRole?: AccessibilityRole,
-  accessibilityStates?: Array<AccessibilityState>,
-  accessibilityTraits?: AccessibilityTrait | Array<AccessibilityTrait>,
+  accessibilityRole?: ?AccessibilityRole,
+  accessibilityStates?: ?AccessibilityStates,
+  accessibilityTraits?: ?(AccessibilityTrait | Array<AccessibilityTrait>),
+
+  /**
+   * Whether font should be scaled down automatically.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#adjustsfontsizetofit
+   */
+  adjustsFontSizeToFit?: ?boolean,
+
+  /**
+   * Whether fonts should scale to respect Text Size accessibility settings.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#allowfontscaling
+   */
   allowFontScaling?: ?boolean,
-  children?: Node,
-  ellipsizeMode?: 'clip' | 'head' | 'middle' | 'tail',
-  nativeID?: string,
+  children?: ?React.Node,
+
+  /**
+   * When `numberOfLines` is set, this prop defines how text will be
+   * truncated.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#ellipsizemode
+   */
+  ellipsizeMode?: ?('clip' | 'head' | 'middle' | 'tail'),
+
+  /**
+   * Specifies largest possible scale a font can reach when `allowFontScaling` is enabled.
+   * Possible values:
+   * `null/undefined` (default): inherit from the parent node or the global default (0)
+   * `0`: no max, ignore parent/global default
+   * `>= 1`: sets the maxFontSizeMultiplier of this node to this value
+   */
+  maxFontSizeMultiplier?: ?number,
+
+  /**
+   * Used to locate this view from native code.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#nativeid
+   */
+  nativeID?: ?string,
+
+  /**
+   * Used to truncate the text with an ellipsis.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#numberoflines
+   */
   numberOfLines?: ?number,
+
+  /**
+   * Invoked on mount and layout changes.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#onlayout
+   */
   onLayout?: ?(event: LayoutEvent) => mixed,
+
+  /**
+   * This function is called on long press.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#onlongpress
+   */
   onLongPress?: ?(event: PressEvent) => mixed,
+
+  /**
+   * This function is called on press.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#onpress
+   */
   onPress?: ?(event: PressEvent) => mixed,
-  onResponderGrant?: ?Function,
-  onResponderMove?: ?Function,
-  onResponderRelease?: ?Function,
-  onResponderTerminate?: ?Function,
-  onResponderTerminationRequest?: ?Function,
-  onStartShouldSetResponder?: ?Function,
+  onResponderGrant?: ?(event: PressEvent, dispatchID: string) => void,
+  onResponderMove?: ?(event: PressEvent) => void,
+  onResponderRelease?: ?(event: PressEvent) => void,
+  onResponderTerminate?: ?(event: PressEvent) => void,
+  onResponderTerminationRequest?: ?() => boolean,
+  onStartShouldSetResponder?: ?() => boolean,
+  onTextLayout?: ?(event: TextLayoutEvent) => mixed,
+
+  /**
+   * Defines how far your touch may move off of the button, before
+   * deactivating the button.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#pressretentionoffset
+   */
   pressRetentionOffset?: ?PressRetentionOffset,
+
+  /**
+   * Lets the user select text.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#selectable
+   */
   selectable?: ?boolean,
   style?: ?DangerouslyImpreciseStyleProp,
-  testID?: string,
 
-  // Android Only
+  /**
+   * Used to locate this view in end-to-end tests.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#testid
+   */
+  testID?: ?string,
+
+  /**
+   * Android Only
+   */
+
+  /**
+   * Specifies the disabled state of the text view for testing purposes.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#disabled
+   */
   disabled?: ?boolean,
+
+  /**
+   * The highlight color of the text.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#selectioncolor
+   */
   selectionColor?: ?string,
-  textBreakStrategy?: 'balanced' | 'highQuality' | 'simple',
 
-  // iOS Only
+  /**
+   * Set text break strategy on Android.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#textbreakstrategy
+   */
+  textBreakStrategy?: ?('balanced' | 'highQuality' | 'simple'),
+
+  /**
+   * iOS Only
+   */
   adjustsFontSizeToFit?: ?boolean,
+
+  /**
+   * Smallest possible scale a font can reach.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#minimumfontscale
+   */
   minimumFontScale?: ?number,
+
+  /**
+   * When `true`, no visual change is made when text is pressed down.
+   *
+   * See https://facebook.github.io/react-native/docs/text.html#supperhighlighting
+   */
   suppressHighlighting?: ?boolean,
 }>;
diff --git a/Libraries/Text/TextStylePropTypes.js b/Libraries/Text/TextStylePropTypes.js
index 51a330131f7c0b..113c03a08695fa 100644
--- a/Libraries/Text/TextStylePropTypes.js
+++ b/Libraries/Text/TextStylePropTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,14 +10,14 @@
 
 'use strict';
 
-const ColorPropType = require('ColorPropType');
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
 const ReactPropTypes = require('prop-types');
-const ViewStylePropTypes = require('ViewStylePropTypes');
+const DeprecatedViewStylePropTypes = require('DeprecatedViewStylePropTypes');
 
 const TextStylePropTypes = {
-  ...ViewStylePropTypes,
+  ...DeprecatedViewStylePropTypes,
 
-  color: ColorPropType,
+  color: DeprecatedColorPropType,
   fontFamily: ReactPropTypes.string,
   /**
    * Specifies the fully qualified path of the font file.
@@ -61,7 +61,7 @@ const TextStylePropTypes = {
     height: ReactPropTypes.number,
   }),
   textShadowRadius: ReactPropTypes.number,
-  textShadowColor: ColorPropType,
+  textShadowColor: DeprecatedColorPropType,
   /**
    * @platform ios
    */
@@ -112,10 +112,7 @@ const TextStylePropTypes = {
   /**
    * @platform ios
    */
-  textDecorationColor: ColorPropType,
-  /**
-   * @platform ios
-   */
+  textDecorationColor: DeprecatedColorPropType,
   textTransform: ReactPropTypes.oneOf([
     'none' /*default*/,
     'capitalize',
diff --git a/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h b/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
index 159a155f994a7b..c2bef89803eaad 100644
--- a/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
+++ b/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/VirtualText/RCTVirtualTextShadowView.m b/Libraries/Text/VirtualText/RCTVirtualTextShadowView.m
index 55fd8a6eef5746..ef659cc54b797a 100644
--- a/Libraries/Text/VirtualText/RCTVirtualTextShadowView.m
+++ b/Libraries/Text/VirtualText/RCTVirtualTextShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,31 +16,6 @@ @implementation RCTVirtualTextShadowView {
   BOOL _isLayoutDirty;
 }
 
-#pragma mark - Life Cycle
-
-- (void)insertReactSubview:(RCTShadowView *)subview atIndex:(NSInteger)index
-{
-  [super insertReactSubview:subview atIndex:index];
-
-  [self dirtyLayout];
-
-  if (![subview isKindOfClass:[RCTVirtualTextShadowView class]]) {
-    YGNodeSetDirtiedFunc(subview.yogaNode, RCTVirtualTextShadowViewYogaNodeDirtied);
-  }
-
-}
-
-- (void)removeReactSubview:(RCTShadowView *)subview
-{
-  if (![subview isKindOfClass:[RCTVirtualTextShadowView class]]) {
-    YGNodeSetDirtiedFunc(subview.yogaNode, NULL);
-  }
-
-  [self dirtyLayout];
-
-  [super removeReactSubview:subview];
-}
-
 #pragma mark - Layout
 
 - (void)dirtyLayout
@@ -60,14 +35,4 @@ - (void)clearLayout
   _isLayoutDirty = NO;
 }
 
-static void RCTVirtualTextShadowViewYogaNodeDirtied(YGNodeRef node)
-{
-  RCTShadowView *shadowView = (__bridge RCTShadowView *)YGNodeGetContext(node);
-
-  RCTVirtualTextShadowView *virtualTextShadowView =
-    (RCTVirtualTextShadowView *)shadowView.reactSuperview;
-
-  [virtualTextShadowView dirtyLayout];
-}
-
 @end
diff --git a/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h b/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
index cf2072f5df5750..3382d762c3457f 100644
--- a/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
+++ b/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Text/VirtualText/RCTVirtualTextViewManager.m b/Libraries/Text/VirtualText/RCTVirtualTextViewManager.m
index adc3c885405e36..48eec5ff25a199 100644
--- a/Libraries/Text/VirtualText/RCTVirtualTextViewManager.m
+++ b/Libraries/Text/VirtualText/RCTVirtualTextViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Types/CoreEventTypes.js b/Libraries/Types/CoreEventTypes.js
index 58a0cc5eda06dc..abe7cdbd929479 100644
--- a/Libraries/Types/CoreEventTypes.js
+++ b/Libraries/Types/CoreEventTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,7 +19,9 @@ export type SyntheticEvent<T> = $ReadOnly<{|
     registrationName: string,
   |}>,
   eventPhase: ?number,
+  preventDefault: () => void,
   isDefaultPrevented: () => boolean,
+  stopPropagation: () => void,
   isPropagationStopped: () => boolean,
   isTrusted: ?boolean,
   nativeEvent: T,
@@ -29,6 +31,29 @@ export type SyntheticEvent<T> = $ReadOnly<{|
   type: ?string,
 |}>;
 
+export type ResponderSyntheticEvent<T> = $ReadOnly<{|
+  ...SyntheticEvent<T>,
+  touchHistory: $ReadOnly<{|
+    indexOfSingleActiveTouch: number,
+    mostRecentTimeStamp: number,
+    numberActiveTouches: number,
+    touchBank: $ReadOnlyArray<
+      $ReadOnly<{|
+        touchActive: boolean,
+        startPageX: number,
+        startPageY: number,
+        startTimeStamp: number,
+        currentPageX: number,
+        currentPageY: number,
+        currentTimeStamp: number,
+        previousPageX: number,
+        previousPageY: number,
+        previousTimeStamp: number,
+      |}>,
+    >,
+  |}>,
+|}>;
+
 export type Layout = $ReadOnly<{|
   x: number,
   y: number,
@@ -36,13 +61,28 @@ export type Layout = $ReadOnly<{|
   height: number,
 |}>;
 
+export type TextLayout = $ReadOnly<{|
+  ...Layout,
+  ascender: number,
+  capHeight: number,
+  descender: number,
+  text: string,
+  xHeight: number,
+|}>;
+
 export type LayoutEvent = SyntheticEvent<
   $ReadOnly<{|
     layout: Layout,
   |}>,
 >;
 
-export type PressEvent = SyntheticEvent<
+export type TextLayoutEvent = SyntheticEvent<
+  $ReadOnly<{|
+    lines: Array<TextLayout>,
+  |}>,
+>;
+
+export type PressEvent = ResponderSyntheticEvent<
   $ReadOnly<{|
     changedTouches: $ReadOnlyArray<$PropertyType<PressEvent, 'nativeEvent'>>,
     force: number,
@@ -77,6 +117,14 @@ export type ScrollEvent = SyntheticEvent<
       height: number,
       width: number,
     |}>,
+    targetContentOffset?: $ReadOnly<{|
+      y: number,
+      x: number,
+    |}>,
+    velocity?: $ReadOnly<{|
+      y: number,
+      x: number,
+    |}>,
     zoomScale: number,
   |}>,
 >;
diff --git a/Libraries/UTFSequence.js b/Libraries/UTFSequence.js
index 6792bbf6e2eaf5..bd10afc6ca2c72 100644
--- a/Libraries/UTFSequence.js
+++ b/Libraries/UTFSequence.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/BackAndroid.js b/Libraries/Utilities/BackAndroid.js
deleted file mode 100644
index 9484ace2411957..00000000000000
--- a/Libraries/Utilities/BackAndroid.js
+++ /dev/null
@@ -1,54 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * BackAndroid has been moved to BackHandler.  This stub calls BackHandler methods
- * after generating a warning to remind users to move to the new BackHandler module.
- *
- * @format
- */
-
-'use strict';
-
-const BackHandler = require('BackHandler');
-
-const warning = require('fbjs/lib/warning');
-
-/**
- * Deprecated.  Use BackHandler instead.
- */
-const BackAndroid = {
-  exitApp: function() {
-    warning(
-      false,
-      'BackAndroid is deprecated.  Please use BackHandler instead.',
-    );
-    BackHandler.exitApp();
-  },
-
-  addEventListener: function(
-    eventName: BackPressEventName,
-    handler: Function,
-  ): {remove: () => void} {
-    warning(
-      false,
-      'BackAndroid is deprecated.  Please use BackHandler instead.',
-    );
-    return BackHandler.addEventListener(eventName, handler);
-  },
-
-  removeEventListener: function(
-    eventName: BackPressEventName,
-    handler: Function,
-  ): void {
-    warning(
-      false,
-      'BackAndroid is deprecated.  Please use BackHandler instead.',
-    );
-    BackHandler.removeEventListener(eventName, handler);
-  },
-};
-
-module.exports = BackAndroid;
diff --git a/Libraries/Utilities/BackHandler.android.js b/Libraries/Utilities/BackHandler.android.js
index 687e7ac70ab189..720d23cd3439e4 100644
--- a/Libraries/Utilities/BackHandler.android.js
+++ b/Libraries/Utilities/BackHandler.android.js
@@ -1,9 +1,10 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
+ * @flow
  * @format
  */
 
@@ -14,26 +15,18 @@ const RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
 
 const DEVICE_BACK_EVENT = 'hardwareBackPress';
 
-type BackPressEventName = $Enum<{
-  backPress: string,
-}>;
+type BackPressEventName = 'backPress' | 'hardwareBackPress';
 
-const _backPressSubscriptions = new Set();
+const _backPressSubscriptions = [];
 
 RCTDeviceEventEmitter.addListener(DEVICE_BACK_EVENT, function() {
-  let invokeDefault = true;
-  const subscriptions = Array.from(_backPressSubscriptions.values()).reverse();
-
-  for (let i = 0; i < subscriptions.length; ++i) {
-    if (subscriptions[i]()) {
-      invokeDefault = false;
-      break;
+  for (let i = _backPressSubscriptions.length - 1; i >= 0; i--) {
+    if (_backPressSubscriptions[i]()) {
+      return;
     }
   }
 
-  if (invokeDefault) {
-    BackHandler.exitApp();
-  }
+  BackHandler.exitApp();
 });
 
 /**
@@ -68,8 +61,19 @@ RCTDeviceEventEmitter.addListener(DEVICE_BACK_EVENT, function() {
  * });
  * ```
  */
-const BackHandler = {
-  exitApp: function() {
+type TBackHandler = {|
+  +exitApp: () => void,
+  +addEventListener: (
+    eventName: BackPressEventName,
+    handler: Function,
+  ) => {remove: () => void},
+  +removeEventListener: (
+    eventName: BackPressEventName,
+    handler: Function,
+  ) => void,
+|};
+const BackHandler: TBackHandler = {
+  exitApp: function(): void {
     DeviceEventManager.invokeDefaultBackPressHandler();
   },
 
@@ -83,9 +87,11 @@ const BackHandler = {
     eventName: BackPressEventName,
     handler: Function,
   ): {remove: () => void} {
-    _backPressSubscriptions.add(handler);
+    if (_backPressSubscriptions.indexOf(handler) === -1) {
+      _backPressSubscriptions.push(handler);
+    }
     return {
-      remove: () => BackHandler.removeEventListener(eventName, handler),
+      remove: (): void => BackHandler.removeEventListener(eventName, handler),
     };
   },
 
@@ -96,7 +102,12 @@ const BackHandler = {
     eventName: BackPressEventName,
     handler: Function,
   ): void {
-    _backPressSubscriptions.delete(handler);
+    if (_backPressSubscriptions.indexOf(handler) !== -1) {
+      _backPressSubscriptions.splice(
+        _backPressSubscriptions.indexOf(handler),
+        1,
+      );
+    }
   },
 };
 
diff --git a/Libraries/Utilities/BackHandler.ios.js b/Libraries/Utilities/BackHandler.ios.js
index e29cbf5e124419..367fa4d8a35065 100644
--- a/Libraries/Utilities/BackHandler.ios.js
+++ b/Libraries/Utilities/BackHandler.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,7 @@
  * On Apple TV, this implements back navigation using the TV remote's menu button.
  * On iOS, this just implements a stub.
  *
+ * @flow
  * @format
  */
 
@@ -15,11 +16,9 @@
 const Platform = require('Platform');
 const TVEventHandler = require('TVEventHandler');
 
-type BackPressEventName = $Enum<{
-  backPress: string,
-}>;
+type BackPressEventName = 'backPress' | 'hardwareBackPress';
 
-function emptyFunction() {}
+function emptyFunction(): void {}
 
 /**
  * Detect hardware button presses for back navigation.
@@ -53,7 +52,19 @@ function emptyFunction() {}
  * });
  * ```
  */
-let BackHandler;
+type TBackHandler = {|
+  +exitApp: () => void,
+  +addEventListener: (
+    eventName: BackPressEventName,
+    handler: Function,
+  ) => {remove: () => void},
+  +removeEventListener: (
+    eventName: BackPressEventName,
+    handler: Function,
+  ) => void,
+|};
+
+let BackHandler: TBackHandler;
 
 if (Platform.isTV) {
   const _tvEventHandler = new TVEventHandler();
@@ -102,12 +113,12 @@ if (Platform.isTV) {
 } else {
   BackHandler = {
     exitApp: emptyFunction,
-    addEventListener() {
+    addEventListener(_eventName: BackPressEventName, _handler: Function) {
       return {
         remove: emptyFunction,
       };
     },
-    removeEventListener: emptyFunction,
+    removeEventListener(_eventName: BackPressEventName, _handler: Function) {},
   };
 }
 
diff --git a/Libraries/Utilities/DeviceInfo.js b/Libraries/Utilities/DeviceInfo.js
index 8ed4dd31895392..318e434a39709f 100644
--- a/Libraries/Utilities/DeviceInfo.js
+++ b/Libraries/Utilities/DeviceInfo.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/Dimensions.js b/Libraries/Utilities/Dimensions.js
index bd4e60f0ef5ba7..8e8bd1af94081a 100644
--- a/Libraries/Utilities/Dimensions.js
+++ b/Libraries/Utilities/Dimensions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/HMRClient.js b/Libraries/Utilities/HMRClient.js
index 512c3e0b798359..35422fddd6be47 100644
--- a/Libraries/Utilities/HMRClient.js
+++ b/Libraries/Utilities/HMRClient.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -27,6 +27,9 @@ const HMRClient = {
     // Moving to top gives errors due to NativeModules not being initialized
     const HMRLoadingView = require('HMRLoadingView');
 
+    /* $FlowFixMe(>=0.84.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.84 was deployed. To see the error, delete this
+     * comment and run Flow. */
     const wsHostPort = port !== null && port !== '' ? `${host}:${port}` : host;
 
     bundleEntry = bundleEntry.replace(/\.(bundle|delta)/, '.js');
@@ -89,7 +92,27 @@ Error: ${e.message}`;
 
     hmrClient.on('error', data => {
       HMRLoadingView.hide();
-      throw new Error(`${data.type} ${data.message}`);
+
+      if (data.type === 'GraphNotFoundError') {
+        hmrClient.disable();
+        throw new Error(
+          'The packager server has restarted since the last Hot update. Hot Reloading will be disabled until you reload the application.',
+        );
+      } else if (data.type === 'RevisionNotFoundError') {
+        hmrClient.disable();
+        throw new Error(
+          'The packager server and the client are out of sync. Hot Reloading will be disabled until you reload the application.',
+        );
+      } else {
+        throw new Error(`${data.type} ${data.message}`);
+      }
+    });
+
+    hmrClient.on('close', data => {
+      HMRLoadingView.hide();
+      throw new Error(
+        'Disconnected from the packager server. Hot Reloading will be disabled until you reload the application.',
+      );
     });
 
     hmrClient.enable();
diff --git a/Libraries/Utilities/HMRLoadingView.android.js b/Libraries/Utilities/HMRLoadingView.android.js
index ae17636537a2d9..dc814bb9e2d6ed 100644
--- a/Libraries/Utilities/HMRLoadingView.android.js
+++ b/Libraries/Utilities/HMRLoadingView.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/HMRLoadingView.js b/Libraries/Utilities/HMRLoadingView.js
index efb8b9e17cedde..a87bd23a3bdd2b 100644
--- a/Libraries/Utilities/HMRLoadingView.js
+++ b/Libraries/Utilities/HMRLoadingView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/HeapCapture.js b/Libraries/Utilities/HeapCapture.js
index 0b91c4ecc6cac0..e64fac14504818 100644
--- a/Libraries/Utilities/HeapCapture.js
+++ b/Libraries/Utilities/HeapCapture.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/JSDevSupportModule.js b/Libraries/Utilities/JSDevSupportModule.js
index 943cf83a574f4f..518c3400390ff8 100644
--- a/Libraries/Utilities/JSDevSupportModule.js
+++ b/Libraries/Utilities/JSDevSupportModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/MatrixMath.js b/Libraries/Utilities/MatrixMath.js
index bb91c1d329181b..e5b75fb2dff999 100755
--- a/Libraries/Utilities/MatrixMath.js
+++ b/Libraries/Utilities/MatrixMath.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -577,7 +577,7 @@ const MatrixMath = {
     );
 
     // output values
-    var perspective = [];
+    let perspective = [];
     const quaternion = [];
     const scale = [];
     const skew = [];
@@ -590,7 +590,7 @@ const MatrixMath = {
     }
     const matrix = [];
     const perspectiveMatrix = [];
-    for (var i = 0; i < 4; i++) {
+    for (let i = 0; i < 4; i++) {
       matrix.push([]);
       for (let j = 0; j < 4; j++) {
         const value = transformMatrix[i * 4 + j] / transformMatrix[15];
@@ -622,7 +622,7 @@ const MatrixMath = {
       const transposedInversePerspectiveMatrix = MatrixMath.transpose(
         inversePerspectiveMatrix,
       );
-      var perspective = MatrixMath.multiplyVectorByMatrix(
+      perspective = MatrixMath.multiplyVectorByMatrix(
         rightHandSide,
         transposedInversePerspectiveMatrix,
       );
@@ -633,14 +633,14 @@ const MatrixMath = {
     }
 
     // translation is simple
-    for (var i = 0; i < 3; i++) {
+    for (let i = 0; i < 3; i++) {
       translation[i] = matrix[3][i];
     }
 
     // Now get scale and shear.
     // 'row' is a 3 element array of 3 component vectors
     const row = [];
-    for (i = 0; i < 3; i++) {
+    for (let i = 0; i < 3; i++) {
       row[i] = [matrix[i][0], matrix[i][1], matrix[i][2]];
     }
 
@@ -678,7 +678,7 @@ const MatrixMath = {
     // is -1, then negate the matrix and the scaling factors.
     const pdum3 = MatrixMath.v3Cross(row[1], row[2]);
     if (MatrixMath.v3Dot(row[0], pdum3) < 0) {
-      for (i = 0; i < 3; i++) {
+      for (let i = 0; i < 3; i++) {
         scale[i] *= -1;
         row[i][0] *= -1;
         row[i][1] *= -1;
diff --git a/Libraries/Utilities/PerformanceLogger.js b/Libraries/Utilities/PerformanceLogger.js
index 8bd1cc638a2b21..0054b2464b77a9 100644
--- a/Libraries/Utilities/PerformanceLogger.js
+++ b/Libraries/Utilities/PerformanceLogger.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,6 +26,7 @@ type Timespan = {
 
 let timespans: {[key: string]: Timespan} = {};
 let extras: {[key: string]: any} = {};
+let points: {[key: string]: number} = {};
 const cookies: {[key: string]: number} = {};
 
 const PRINT_TO_CONSOLE: false = false; // Type as false to prevent accidentally committing `true`;
@@ -107,6 +108,7 @@ const PerformanceLogger = {
   clear() {
     timespans = {};
     extras = {};
+    points = {};
     if (PRINT_TO_CONSOLE) {
       infoLog('PerformanceLogger.js', 'clear');
     }
@@ -119,6 +121,7 @@ const PerformanceLogger = {
       }
     }
     extras = {};
+    points = {};
     if (PRINT_TO_CONSOLE) {
       infoLog('PerformanceLogger.js', 'clearCompleted');
     }
@@ -132,6 +135,7 @@ const PerformanceLogger = {
       return previous;
     }, {});
     extras = {};
+    points = {};
     if (PRINT_TO_CONSOLE) {
       infoLog('PerformanceLogger.js', 'clearExceptTimespans', keys);
     }
@@ -188,6 +192,29 @@ const PerformanceLogger = {
   logExtras() {
     infoLog(extras);
   },
+
+  markPoint(key: string, timestamp?: number) {
+    if (points[key]) {
+      if (__DEV__) {
+        infoLog(
+          'PerformanceLogger: Attempting to mark a point that has been already logged ',
+          key,
+        );
+      }
+      return;
+    }
+    points[key] = timestamp ?? performanceNow();
+  },
+
+  getPoints() {
+    return points;
+  },
+
+  logPoints() {
+    for (const key in points) {
+      infoLog(key + ': ' + points[key] + 'ms');
+    }
+  },
 };
 
 module.exports = PerformanceLogger;
diff --git a/Libraries/Utilities/PixelRatio.js b/Libraries/Utilities/PixelRatio.js
index 3982be19a1120d..7c742e76f2d10b 100644
--- a/Libraries/Utilities/PixelRatio.js
+++ b/Libraries/Utilities/PixelRatio.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -68,9 +68,15 @@ class PixelRatio {
    *     - iPhone 4, 4S
    *     - iPhone 5, 5c, 5s
    *     - iPhone 6
+   *     - iPhone 7
+   *     - iPhone 8
+   *     - iPhone SE
    *     - xhdpi Android devices (320 dpi)
    *   - PixelRatio.get() === 3
-   *     - iPhone 6 plus
+   *     - iPhone 6 Plus
+   *     - iPhone 7 Plus
+   *     - iPhone 8 Plus
+   *     - iPhone X
    *     - xxhdpi Android devices (480 dpi)
    *   - PixelRatio.get() === 3.5
    *     - Nexus 6
diff --git a/Libraries/Utilities/Platform.android.js b/Libraries/Utilities/Platform.android.js
index 92edba18299b3a..6a9feb13753197 100644
--- a/Libraries/Utilities/Platform.android.js
+++ b/Libraries/Utilities/Platform.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,8 +19,11 @@ const Platform = {
     return constants && constants.Version;
   },
   get isTesting(): boolean {
-    const constants = NativeModules.PlatformConstants;
-    return constants && constants.isTesting;
+    if (__DEV__) {
+      const constants = NativeModules.PlatformConstants;
+      return constants && constants.isTesting;
+    }
+    return false;
   },
   get isTV(): boolean {
     const constants = NativeModules.PlatformConstants;
diff --git a/Libraries/Utilities/Platform.ios.js b/Libraries/Utilities/Platform.ios.js
index df3a15be20f2a4..87ee54692aa050 100644
--- a/Libraries/Utilities/Platform.ios.js
+++ b/Libraries/Utilities/Platform.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,8 +33,11 @@ const Platform = {
     return constants ? constants.interfaceIdiom === 'tv' : false;
   },
   get isTesting(): boolean {
-    const constants = NativeModules.PlatformConstants;
-    return constants && constants.isTesting;
+    if (__DEV__) {
+      const constants = NativeModules.PlatformConstants;
+      return constants && constants.isTesting;
+    }
+    return false;
   },
   select: (obj: Object) => ('ios' in obj ? obj.ios : obj.default),
 };
diff --git a/Libraries/Utilities/PlatformOS.android.js b/Libraries/Utilities/PlatformOS.android.js
index 5ddf8d81e6e753..00d771a5d57f44 100644
--- a/Libraries/Utilities/PlatformOS.android.js
+++ b/Libraries/Utilities/PlatformOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/PlatformOS.ios.js b/Libraries/Utilities/PlatformOS.ios.js
index a1f28837ac36a0..2d1b92b71be043 100644
--- a/Libraries/Utilities/PlatformOS.ios.js
+++ b/Libraries/Utilities/PlatformOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/PolyfillFunctions.js b/Libraries/Utilities/PolyfillFunctions.js
index 28cb44d5402bae..0adb00647d2fe8 100644
--- a/Libraries/Utilities/PolyfillFunctions.js
+++ b/Libraries/Utilities/PolyfillFunctions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,10 +33,7 @@ function polyfillObjectProperty<T>(
   const descriptor = Object.getOwnPropertyDescriptor(object, name);
   if (__DEV__ && descriptor) {
     const backupName = `original${name[0].toUpperCase()}${name.substr(1)}`;
-    Object.defineProperty(object, backupName, {
-      ...descriptor,
-      value: object[name],
-    });
+    Object.defineProperty(object, backupName, descriptor);
   }
 
   const {enumerable, writable, configurable} = descriptor || {};
diff --git a/Libraries/Utilities/RCTLog.js b/Libraries/Utilities/RCTLog.js
index ab29cd5ce6ee6c..c6fdd6ca14fae7 100644
--- a/Libraries/Utilities/RCTLog.js
+++ b/Libraries/Utilities/RCTLog.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/ReactNativeTestTools.js b/Libraries/Utilities/ReactNativeTestTools.js
new file mode 100644
index 00000000000000..bcab51684d27d0
--- /dev/null
+++ b/Libraries/Utilities/ReactNativeTestTools.js
@@ -0,0 +1,165 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+const React = require('React');
+const ReactTestRenderer = require('react-test-renderer');
+
+const {Switch, Text, TextInput, VirtualizedList} = require('react-native');
+
+import type {
+  ReactTestInstance,
+  ReactTestRendererNode,
+  Predicate,
+} from 'react-test-renderer';
+
+function byClickable(): Predicate {
+  return withMessage(
+    node =>
+      // note: <Text /> lazy-mounts press handlers after the first press,
+      //       so this is a workaround for targeting text nodes.
+      (node.type === Text &&
+        node.props &&
+        typeof node.props.onPress === 'function') ||
+      // note: Special casing <Switch /> since it doesn't use touchable
+      (node.type === Switch && node.props && node.props.disabled !== true) ||
+      (node.instance &&
+        typeof node.instance.touchableHandlePress === 'function'),
+    'is clickable',
+  );
+}
+
+function byTestID(testID: string): Predicate {
+  return withMessage(
+    node => node.props && node.props.testID === testID,
+    `testID prop equals ${testID}`,
+  );
+}
+
+function byTextMatching(regex: RegExp): Predicate {
+  return withMessage(
+    node => node.props && regex.exec(node.props.children),
+    `text content matches ${regex.toString()}`,
+  );
+}
+
+function enter(instance: ReactTestInstance, text: string) {
+  const input = instance.findByType(TextInput);
+  input.instance._onChange({nativeEvent: {text}});
+}
+
+// Returns null if there is no error, otherwise returns an error message string.
+function maximumDepthError(
+  tree: {toJSON: () => ReactTestRendererNode},
+  maxDepthLimit: number,
+): ?string {
+  const maxDepth = maximumDepthOfJSON(tree.toJSON());
+  if (maxDepth > maxDepthLimit) {
+    return (
+      `maximumDepth of ${maxDepth} exceeded limit of ${maxDepthLimit} - this is a proxy ` +
+      'metric to protect against stack overflow errors:\n\n' +
+      'https://fburl.com/rn-view-stack-overflow.\n\n' +
+      'To fix, you need to remove native layers from your hierarchy, such as unnecessary View ' +
+      'wrappers.'
+    );
+  } else {
+    return null;
+  }
+}
+
+function expectNoConsoleWarn() {
+  (jest: $FlowFixMe).spyOn(console, 'warn').mockImplementation((...args) => {
+    expect(args).toBeFalsy();
+  });
+}
+
+function expectNoConsoleError() {
+  let hasNotFailed = true;
+  (jest: $FlowFixMe).spyOn(console, 'error').mockImplementation((...args) => {
+    if (hasNotFailed) {
+      hasNotFailed = false; // set false to prevent infinite recursion
+      expect(args).toBeFalsy();
+    }
+  });
+}
+
+// Takes a node from toJSON()
+function maximumDepthOfJSON(node: ReactTestRendererNode): number {
+  if (node == null) {
+    return 0;
+  } else if (typeof node === 'string' || node.children == null) {
+    return 1;
+  } else {
+    let maxDepth = 0;
+    node.children.forEach(child => {
+      maxDepth = Math.max(maximumDepthOfJSON(child) + 1, maxDepth);
+    });
+    return maxDepth;
+  }
+}
+
+function renderAndEnforceStrictMode(element: React.Node) {
+  expectNoConsoleError();
+  return renderWithStrictMode(element);
+}
+
+function renderWithStrictMode(element: React.Node) {
+  const WorkAroundBugWithStrictModeInTestRenderer = prps => prps.children;
+  const StrictMode = (React: $FlowFixMe).StrictMode;
+  return ReactTestRenderer.create(
+    <WorkAroundBugWithStrictModeInTestRenderer>
+      <StrictMode>{element}</StrictMode>
+    </WorkAroundBugWithStrictModeInTestRenderer>,
+  );
+}
+
+function tap(instance: ReactTestInstance) {
+  const touchable = instance.find(byClickable());
+  if (touchable.type === Text && touchable.props && touchable.props.onPress) {
+    touchable.props.onPress();
+  } else if (touchable.type === Switch && touchable.props) {
+    const value = !touchable.props.value;
+    const {onChange, onValueChange} = touchable.props;
+    onChange && onChange({nativeEvent: {value}});
+    onValueChange && onValueChange(value);
+  } else {
+    // Only tap when props.disabled isn't set (or there aren't any props)
+    if (!touchable.props || !touchable.props.disabled) {
+      touchable.instance.touchableHandlePress({nativeEvent: {}});
+    }
+  }
+}
+
+function scrollToBottom(instance: ReactTestInstance) {
+  const list = instance.findByType(VirtualizedList);
+  list.props && list.props.onEndReached();
+}
+
+// To make error messages a little bit better, we attach a custom toString
+// implementation to a predicate
+function withMessage(fn: Predicate, message: string): Predicate {
+  (fn: any).toString = () => message;
+  return fn;
+}
+
+export {byClickable};
+export {byTestID};
+export {byTextMatching};
+export {enter};
+export {expectNoConsoleWarn};
+export {expectNoConsoleError};
+export {maximumDepthError};
+export {maximumDepthOfJSON};
+export {renderAndEnforceStrictMode};
+export {renderWithStrictMode};
+export {scrollToBottom};
+export {tap};
+export {withMessage};
diff --git a/Libraries/Utilities/SceneTracker.js b/Libraries/Utilities/SceneTracker.js
index 4928efaa4e6772..266494913dcb8d 100644
--- a/Libraries/Utilities/SceneTracker.js
+++ b/Libraries/Utilities/SceneTracker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__mocks__/BackHandler.js b/Libraries/Utilities/__mocks__/BackHandler.js
index ec1d60bec3b879..8422b05057c6e5 100644
--- a/Libraries/Utilities/__mocks__/BackHandler.js
+++ b/Libraries/Utilities/__mocks__/BackHandler.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__mocks__/PixelRatio.js b/Libraries/Utilities/__mocks__/PixelRatio.js
index efe64953563e81..90c0de2041bdfa 100644
--- a/Libraries/Utilities/__mocks__/PixelRatio.js
+++ b/Libraries/Utilities/__mocks__/PixelRatio.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2004-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/MatrixMath-test.js b/Libraries/Utilities/__tests__/MatrixMath-test.js
index e70fbed91477e0..30de5f87992cb0 100644
--- a/Libraries/Utilities/__tests__/MatrixMath-test.js
+++ b/Libraries/Utilities/__tests__/MatrixMath-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/Platform-test.js b/Libraries/Utilities/__tests__/Platform-test.js
index 823ed7e56882a9..dd1a85caf5cd72 100644
--- a/Libraries/Utilities/__tests__/Platform-test.js
+++ b/Libraries/Utilities/__tests__/Platform-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/SceneTracker-test.js b/Libraries/Utilities/__tests__/SceneTracker-test.js
index 2e95b87cb3adf5..01fe1e3d8c644a 100644
--- a/Libraries/Utilities/__tests__/SceneTracker-test.js
+++ b/Libraries/Utilities/__tests__/SceneTracker-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js b/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
index 321f541e91b47e..5b00ddd4b2cd38 100644
--- a/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
+++ b/Libraries/Utilities/__tests__/buildStyleInterpolator-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/deepFreezeAndThrowOnMutationInDev-test.js b/Libraries/Utilities/__tests__/deepFreezeAndThrowOnMutationInDev-test.js
index 4b5e11ea5f37a4..f3f8c016026e32 100644
--- a/Libraries/Utilities/__tests__/deepFreezeAndThrowOnMutationInDev-test.js
+++ b/Libraries/Utilities/__tests__/deepFreezeAndThrowOnMutationInDev-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -28,7 +28,7 @@ describe('deepFreezeAndThrowOnMutationInDev', function() {
 
   it('should not throw on object without prototype', () => {
     __DEV__ = true;
-    var o = Object.create(null);
+    const o = Object.create(null);
     o.key = 'Value';
     expect(() => deepFreezeAndThrowOnMutationInDev(o)).not.toThrow();
   });
diff --git a/Libraries/Utilities/__tests__/groupByEveryN-test.js b/Libraries/Utilities/__tests__/groupByEveryN-test.js
index a084cf225ec530..d31294308c9d3c 100644
--- a/Libraries/Utilities/__tests__/groupByEveryN-test.js
+++ b/Libraries/Utilities/__tests__/groupByEveryN-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/mapWithSeparator-test.js b/Libraries/Utilities/__tests__/mapWithSeparator-test.js
index 96de9fa889aa74..0bbe0dc7defc0e 100644
--- a/Libraries/Utilities/__tests__/mapWithSeparator-test.js
+++ b/Libraries/Utilities/__tests__/mapWithSeparator-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/__tests__/setAndForwardRef-test.js b/Libraries/Utilities/__tests__/setAndForwardRef-test.js
new file mode 100644
index 00000000000000..e1899bb3c2fdf1
--- /dev/null
+++ b/Libraries/Utilities/__tests__/setAndForwardRef-test.js
@@ -0,0 +1,134 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ * @emails oncall+react_native
+ */
+
+'use strict';
+
+const React = require('React');
+const ReactTestRenderer = require('react-test-renderer');
+
+const setAndForwardRef = require('setAndForwardRef');
+
+describe('setAndForwardRef', () => {
+  let innerFuncCalled = false;
+  let outerFuncCalled = false;
+
+  class ForwardedComponent extends React.Component<{||}> {
+    testFunc() {
+      innerFuncCalled = true;
+      return true;
+    }
+
+    render() {
+      return null;
+    }
+  }
+
+  type Props = $ReadOnly<{|
+    callFunc?: ?boolean,
+    forwardedRef: React.Ref<typeof ForwardedComponent>,
+  |}>;
+
+  class TestComponent extends React.Component<Props> {
+    _nativeRef: ?React.ElementRef<typeof ForwardedComponent> = null;
+    _setNativeRef = setAndForwardRef({
+      getForwardedRef: () => this.props.forwardedRef,
+      setLocalRef: ref => {
+        this._nativeRef = ref;
+      },
+    });
+
+    componentDidMount() {
+      if (this.props.callFunc) {
+        outerFuncCalled = this._nativeRef && this._nativeRef.testFunc();
+      }
+    }
+
+    render() {
+      return <ForwardedComponent ref={this._setNativeRef} />;
+    }
+  }
+
+  // $FlowFixMe - TODO T29156721 `React.forwardRef` is not defined in Flow, yet.
+  const TestComponentWithRef = React.forwardRef((props, ref) => (
+    <TestComponent {...props} forwardedRef={ref} />
+  ));
+
+  beforeEach(() => {
+    innerFuncCalled = false;
+    outerFuncCalled = false;
+  });
+
+  it('should forward refs (function-based)', () => {
+    let testRef: ?React.ElementRef<typeof ForwardedComponent> = null;
+
+    ReactTestRenderer.create(
+      <TestComponentWithRef
+        ref={ref => {
+          testRef = ref;
+        }}
+      />,
+    );
+
+    const val = testRef && testRef.testFunc();
+
+    expect(innerFuncCalled).toBe(true);
+    expect(val).toBe(true);
+  });
+
+  it('should forward refs (createRef-based)', () => {
+    const createdRef = React.createRef<typeof ForwardedComponent>();
+
+    ReactTestRenderer.create(<TestComponentWithRef ref={createdRef} />);
+
+    const val = createdRef.current && createdRef.current.testFunc();
+
+    expect(innerFuncCalled).toBe(true);
+    expect(val).toBe(true);
+  });
+
+  it('should forward refs (string-based)', () => {
+    class Test extends React.Component<{||}> {
+      refs: $ReadOnly<{|
+        stringRef?: ?React.ElementRef<typeof ForwardedComponent>,
+      |}>;
+
+      componentDidMount() {
+        /* eslint-disable react/no-string-refs */
+        this.refs.stringRef && this.refs.stringRef.testFunc();
+        /* eslint-enable react/no-string-refs */
+      }
+
+      render() {
+        /**
+         * Can't directly pass the test component to `ReactTestRenderer.create`,
+         * otherwise it will throw. See:
+         * https://reactjs.org/warnings/refs-must-have-owner.html#strings-refs-outside-the-render-method
+         */
+        /* eslint-disable react/no-string-refs */
+        return <TestComponentWithRef ref="stringRef" />;
+        /* eslint-enable react/no-string-refs */
+      }
+    }
+
+    ReactTestRenderer.create(<Test />);
+
+    expect(innerFuncCalled).toBe(true);
+  });
+
+  it('should be able to use the ref from inside of the forwarding class', () => {
+    expect(() =>
+      ReactTestRenderer.create(<TestComponentWithRef callFunc={true} />),
+    ).not.toThrow();
+
+    expect(innerFuncCalled).toBe(true);
+    expect(outerFuncCalled).toBe(true);
+  });
+});
diff --git a/Libraries/Utilities/__tests__/truncate-test.js b/Libraries/Utilities/__tests__/truncate-test.js
index b9eb0eef5faf26..1bfb319d9619ea 100644
--- a/Libraries/Utilities/__tests__/truncate-test.js
+++ b/Libraries/Utilities/__tests__/truncate-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/binaryToBase64.js b/Libraries/Utilities/binaryToBase64.js
index 78e6ae97bc605b..1c16a966cda20f 100644
--- a/Libraries/Utilities/binaryToBase64.js
+++ b/Libraries/Utilities/binaryToBase64.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/buildStyleInterpolator.js b/Libraries/Utilities/buildStyleInterpolator.js
index c316409876c2e4..a7ab6d89385f8f 100644
--- a/Libraries/Utilities/buildStyleInterpolator.js
+++ b/Libraries/Utilities/buildStyleInterpolator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -54,6 +54,9 @@ const computeNextValLinear = function(anim, from, to, value) {
   if (hasRoundRatio) {
     nextVal = Math.round(roundRatio * nextVal) / roundRatio;
   }
+  if (!isFinite(nextVal)) {
+    nextVal = null;
+  }
   return nextVal;
 };
 
@@ -186,17 +189,17 @@ const buildStyleInterpolator = function(anims) {
           );
           didMatrix = true;
         } else {
-          var next = computeNextValLinearScalar(anim, value);
+          const next = computeNextValLinearScalar(anim, value);
           didChange = setNextValAndDetectChange(result, name, next, didChange);
         }
       } else if (anim.type === 'constant') {
-        var next = anim.value;
+        const next = anim.value;
         didChange = setNextValAndDetectChange(result, name, next, didChange);
       } else if (anim.type === 'step') {
-        var next = value >= anim.threshold ? anim.to : anim.from;
+        const next = value >= anim.threshold ? anim.to : anim.from;
         didChange = setNextValAndDetectChange(result, name, next, didChange);
       } else if (anim.type === 'identity') {
-        var next = value;
+        const next = value;
         didChange = setNextValAndDetectChange(result, name, next, didChange);
       }
     }
diff --git a/Libraries/Utilities/clamp.js b/Libraries/Utilities/clamp.js
index bbeb9701b69609..1531f828a1f886 100644
--- a/Libraries/Utilities/clamp.js
+++ b/Libraries/Utilities/clamp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/deepFreezeAndThrowOnMutationInDev.js b/Libraries/Utilities/deepFreezeAndThrowOnMutationInDev.js
index 2e2c4952ee0acf..974314539d2301 100644
--- a/Libraries/Utilities/deepFreezeAndThrowOnMutationInDev.js
+++ b/Libraries/Utilities/deepFreezeAndThrowOnMutationInDev.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -41,8 +41,8 @@ function deepFreezeAndThrowOnMutationInDev<T: Object>(object: T): T {
     const keys = Object.keys(object);
     const hasOwnProperty = Object.prototype.hasOwnProperty;
 
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i];
       if (hasOwnProperty.call(object, key)) {
         Object.defineProperty(object, key, {
           get: identity.bind(null, object[key]),
@@ -56,8 +56,8 @@ function deepFreezeAndThrowOnMutationInDev<T: Object>(object: T): T {
     Object.freeze(object);
     Object.seal(object);
 
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i];
       if (hasOwnProperty.call(object, key)) {
         deepFreezeAndThrowOnMutationInDev(object[key]);
       }
diff --git a/Libraries/Utilities/defineLazyObjectProperty.js b/Libraries/Utilities/defineLazyObjectProperty.js
index 53091c4dff27b3..23aee34d999c79 100644
--- a/Libraries/Utilities/defineLazyObjectProperty.js
+++ b/Libraries/Utilities/defineLazyObjectProperty.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/deprecatedPropType.js b/Libraries/Utilities/deprecatedPropType.js
index 1083fe1222090d..59619fb50bfc25 100644
--- a/Libraries/Utilities/deprecatedPropType.js
+++ b/Libraries/Utilities/deprecatedPropType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,7 +21,10 @@ function deprecatedPropType(
 ): ReactPropsCheckType {
   return function validate(props, propName, componentName, ...rest) {
     // Don't warn for native components.
-    if (!UIManager[componentName] && props[propName] !== undefined) {
+    if (
+      !UIManager.getViewManagerConfig(componentName) &&
+      props[propName] !== undefined
+    ) {
       console.warn(
         `\`${propName}\` supplied to \`${componentName}\` has been deprecated. ${explanation}`,
       );
diff --git a/Libraries/Utilities/differ/__tests__/deepDiffer-test.js b/Libraries/Utilities/differ/__tests__/deepDiffer-test.js
index fd27aa8b1b41e9..7ccb0770965538 100644
--- a/Libraries/Utilities/differ/__tests__/deepDiffer-test.js
+++ b/Libraries/Utilities/differ/__tests__/deepDiffer-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/differ/deepDiffer.js b/Libraries/Utilities/differ/deepDiffer.js
index 8c51cf2117c745..cae6cde1d06338 100644
--- a/Libraries/Utilities/differ/deepDiffer.js
+++ b/Libraries/Utilities/differ/deepDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/differ/insetsDiffer.js b/Libraries/Utilities/differ/insetsDiffer.js
index c0031775fc2e0b..369ffce884f0f8 100644
--- a/Libraries/Utilities/differ/insetsDiffer.js
+++ b/Libraries/Utilities/differ/insetsDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/differ/matricesDiffer.js b/Libraries/Utilities/differ/matricesDiffer.js
index 0b2d2005f84ab8..ade2a5fc3f9246 100644
--- a/Libraries/Utilities/differ/matricesDiffer.js
+++ b/Libraries/Utilities/differ/matricesDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/differ/pointsDiffer.js b/Libraries/Utilities/differ/pointsDiffer.js
index ebaa014da2ed0d..96fb189d43e2ef 100644
--- a/Libraries/Utilities/differ/pointsDiffer.js
+++ b/Libraries/Utilities/differ/pointsDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/differ/sizesDiffer.js b/Libraries/Utilities/differ/sizesDiffer.js
index 9bf477572b2316..63ab71d3243781 100644
--- a/Libraries/Utilities/differ/sizesDiffer.js
+++ b/Libraries/Utilities/differ/sizesDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/dismissKeyboard.js b/Libraries/Utilities/dismissKeyboard.js
index a921a5f616ead9..22092ec6427e1e 100644
--- a/Libraries/Utilities/dismissKeyboard.js
+++ b/Libraries/Utilities/dismissKeyboard.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/groupByEveryN.js b/Libraries/Utilities/groupByEveryN.js
index eae0eb0a3d37fa..1e9c8bf1da8901 100644
--- a/Libraries/Utilities/groupByEveryN.js
+++ b/Libraries/Utilities/groupByEveryN.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/infoLog.js b/Libraries/Utilities/infoLog.js
index 34b032fe7df574..fd90c86b97038b 100644
--- a/Libraries/Utilities/infoLog.js
+++ b/Libraries/Utilities/infoLog.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/logError.js b/Libraries/Utilities/logError.js
index b09a7be5e1644d..45252c6d0f632f 100644
--- a/Libraries/Utilities/logError.js
+++ b/Libraries/Utilities/logError.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/mapWithSeparator.js b/Libraries/Utilities/mapWithSeparator.js
index 776049b2ccf608..ea9004b054835a 100644
--- a/Libraries/Utilities/mapWithSeparator.js
+++ b/Libraries/Utilities/mapWithSeparator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/mergeIntoFast.js b/Libraries/Utilities/mergeIntoFast.js
index a1716a324f2b0d..663f897ae5d5a2 100644
--- a/Libraries/Utilities/mergeIntoFast.js
+++ b/Libraries/Utilities/mergeIntoFast.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/setAndForwardRef.js b/Libraries/Utilities/setAndForwardRef.js
new file mode 100644
index 00000000000000..759569db41604c
--- /dev/null
+++ b/Libraries/Utilities/setAndForwardRef.js
@@ -0,0 +1,68 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+import type React from 'React';
+
+type Args = $ReadOnly<{|
+  getForwardedRef: () => ?React.Ref<any>,
+  setLocalRef: (ref: React.ElementRef<any>) => mixed,
+|}>;
+
+/**
+ * This is a helper function for when a component needs to be able to forward a ref
+ * to a child component, but still needs to have access to that component as part of
+ * its implementation.
+ *
+ * Its main use case is in wrappers for native components.
+ *
+ * Usage:
+ *
+ *   class MyView extends React.Component {
+ *     _nativeRef = null;
+ *
+ *     _setNativeRef = setAndForwardRef({
+ *       getForwardedRef: () => this.props.forwardedRef,
+ *       setLocalRef: ref => {
+ *         this._nativeRef = ref;
+ *       },
+ *     });
+ *
+ *     render() {
+ *       return <View ref={this._setNativeRef} />;
+ *     }
+ *   }
+ *
+ *   const MyViewWithRef = React.forwardRef((props, ref) => (
+ *     <MyView {...props} forwardedRef={ref} />
+ *   ));
+ *
+ *   module.exports = MyViewWithRef;
+ */
+
+function setAndForwardRef({getForwardedRef, setLocalRef}: Args) {
+  return function forwardRef(ref: React.ElementRef<any>) {
+    const forwardedRef = getForwardedRef();
+
+    setLocalRef(ref);
+
+    // Forward to user ref prop (if one has been specified)
+    if (typeof forwardedRef === 'function') {
+      // Handle function-based refs. String-based refs are handled as functions.
+      forwardedRef(ref);
+    } else if (typeof forwardedRef === 'object' && forwardedRef != null) {
+      // Handle createRef-based refs
+      forwardedRef.current = ref;
+    }
+  };
+}
+
+module.exports = setAndForwardRef;
diff --git a/Libraries/Utilities/stringifySafe.js b/Libraries/Utilities/stringifySafe.js
index bfc6dc343f41f1..73e81a345dbf17 100644
--- a/Libraries/Utilities/stringifySafe.js
+++ b/Libraries/Utilities/stringifySafe.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Utilities/truncate.js b/Libraries/Utilities/truncate.js
index 736ae6b452c7b5..b892f0d66d42c9 100644
--- a/Libraries/Utilities/truncate.js
+++ b/Libraries/Utilities/truncate.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Vibration/RCTVibration.h b/Libraries/Vibration/RCTVibration.h
index d1efc147c4aa49..b6172f238c745a 100644
--- a/Libraries/Vibration/RCTVibration.h
+++ b/Libraries/Vibration/RCTVibration.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Vibration/RCTVibration.m b/Libraries/Vibration/RCTVibration.m
index 3a9e065c585992..0c960cd449ce1a 100644
--- a/Libraries/Vibration/RCTVibration.m
+++ b/Libraries/Vibration/RCTVibration.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Vibration/Vibration.js b/Libraries/Vibration/Vibration.js
index 39625ac3aa83e0..7c8f695be85af9 100644
--- a/Libraries/Vibration/Vibration.js
+++ b/Libraries/Vibration/Vibration.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Vibration/VibrationIOS.android.js b/Libraries/Vibration/VibrationIOS.android.js
index 59cbab19c2737a..f87869a6b3daa0 100644
--- a/Libraries/Vibration/VibrationIOS.android.js
+++ b/Libraries/Vibration/VibrationIOS.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,7 +15,10 @@ const warning = require('fbjs/lib/warning');
 
 const VibrationIOS = {
   vibrate: function() {
-    warning('VibrationIOS is not supported on this platform!');
+    warning(
+      false,
+      'VibrationIOS is deprecated, and will be removed. Use Vibration instead.',
+    );
   },
 };
 
diff --git a/Libraries/Vibration/VibrationIOS.ios.js b/Libraries/Vibration/VibrationIOS.ios.js
index 3b26e228f38a4a..5b407ee71b4dbb 100644
--- a/Libraries/Vibration/VibrationIOS.ios.js
+++ b/Libraries/Vibration/VibrationIOS.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,6 +13,7 @@
 const RCTVibration = require('NativeModules').Vibration;
 
 const invariant = require('fbjs/lib/invariant');
+const warning = require('fbjs/lib/warning');
 
 /**
  * NOTE: `VibrationIOS` is being deprecated. Use `Vibration` instead.
@@ -32,6 +33,10 @@ const VibrationIOS = {
    * @deprecated
    */
   vibrate: function() {
+    warning(
+      false,
+      'VibrationIOS is deprecated and will be removed. Please use Vibration instead.',
+    );
     invariant(arguments[0] === undefined, 'Vibration patterns not supported.');
     RCTVibration.vibrate();
   },
diff --git a/Libraries/WebSocket/RCTReconnectingWebSocket.h b/Libraries/WebSocket/RCTReconnectingWebSocket.h
index bcadb3b0ad3241..a371b785aa3a87 100644
--- a/Libraries/WebSocket/RCTReconnectingWebSocket.h
+++ b/Libraries/WebSocket/RCTReconnectingWebSocket.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/RCTReconnectingWebSocket.m b/Libraries/WebSocket/RCTReconnectingWebSocket.m
index e2e241834ce7f5..c949dddacc28d8 100644
--- a/Libraries/WebSocket/RCTReconnectingWebSocket.m
+++ b/Libraries/WebSocket/RCTReconnectingWebSocket.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/RCTSRWebSocket.m b/Libraries/WebSocket/RCTSRWebSocket.m
index a969c75ea29e6d..e8b1a0351b17a4 100644
--- a/Libraries/WebSocket/RCTSRWebSocket.m
+++ b/Libraries/WebSocket/RCTSRWebSocket.m
@@ -219,6 +219,8 @@ @implementation RCTSRWebSocket
   int _closeCode;
 
   BOOL _isPumping;
+  
+  BOOL _cleanupScheduled;
 
   NSMutableSet<NSArray *> *_scheduledRunloops;
 
@@ -326,17 +328,11 @@ - (void)dealloc
 
   [_inputStream close];
   [_outputStream close];
-
-  _workQueue = NULL;
-
+  
   if (_receivedHTTPHeaders) {
     CFRelease(_receivedHTTPHeaders);
     _receivedHTTPHeaders = NULL;
   }
-
-  if (_delegateDispatchQueue) {
-    _delegateDispatchQueue = NULL;
-  }
 }
 
 #ifndef NDEBUG
@@ -628,11 +624,11 @@ - (void)_failWithError:(NSError *)error;
       }];
 
       self.readyState = RCTSR_CLOSED;
-      self->_selfRetain = nil;
-
+      
       RCTSRLog(@"Failing with error %@", error.localizedDescription);
 
       [self _disconnect];
+      [self _scheduleCleanup];
     }
   });
 }
@@ -1038,12 +1034,7 @@ - (void)_pumpWriting;
       !_sentClose) {
     _sentClose = YES;
 
-    [_outputStream close];
-    [_inputStream close];
-
-    for (NSArray *runLoop in [_scheduledRunloops copy]) {
-      [self unscheduleFromRunLoop:runLoop[0] forMode:runLoop[1]];
-    }
+    [self _scheduleCleanup];
 
     if (!_failed) {
       [self _performDelegateBlock:^{
@@ -1052,8 +1043,6 @@ - (void)_pumpWriting;
         }
       }];
     }
-
-    _selfRetain = nil;
   }
 }
 
@@ -1347,94 +1336,142 @@ - (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode;
       }
     }
   }
-
-  assert(_workQueue != NULL);
+  
+  // _workQueue cannot be NULL
+  if (!_workQueue) {
+    return;
+  }
+  __weak typeof(self) weakSelf = self;
   dispatch_async(_workQueue, ^{
-    switch (eventCode) {
-      case NSStreamEventOpenCompleted: {
-        RCTSRLog(@"NSStreamEventOpenCompleted %@", aStream);
-        if (self.readyState >= RCTSR_CLOSING) {
-          return;
-        }
-        assert(self->_readBuffer);
-
-        if (self.readyState == RCTSR_CONNECTING && aStream == self->_inputStream) {
-          [self didConnect];
-        }
-        [self _pumpWriting];
-        [self _pumpScanner];
-        break;
-      }
-
-      case NSStreamEventErrorOccurred: {
-        RCTSRLog(@"NSStreamEventErrorOccurred %@ %@", aStream, [aStream.streamError copy]);
-        // TODO: specify error better!
-        [self _failWithError:aStream.streamError];
-        self->_readBufferOffset = 0;
-        self->_readBuffer.length = 0;
-        break;
+    typeof(self) strongSelf = weakSelf;
+    if (!strongSelf) {
+      return;
+    }
+    [strongSelf safeHandleEvent:eventCode stream:aStream];
+  });
+}
 
+- (void)safeHandleEvent:(NSStreamEvent)eventCode stream:(NSStream *)aStream
+{
+  switch (eventCode) {
+    case NSStreamEventOpenCompleted: {
+      RCTSRLog(@"NSStreamEventOpenCompleted %@", aStream);
+      if (self.readyState >= RCTSR_CLOSING) {
+        return;
       }
-
-      case NSStreamEventEndEncountered: {
-        [self _pumpScanner];
-        RCTSRLog(@"NSStreamEventEndEncountered %@", aStream);
-        if (aStream.streamError) {
-          [self _failWithError:aStream.streamError];
-        } else {
-          dispatch_async(self->_workQueue, ^{
-            if (self.readyState != RCTSR_CLOSED) {
-              self.readyState = RCTSR_CLOSED;
-              self->_selfRetain = nil;
-            }
-
-            if (!self->_sentClose && !self->_failed) {
-              self->_sentClose = YES;
-              // If we get closed in this state it's probably not clean because we should be sending this when we send messages
-              [self _performDelegateBlock:^{
-                if ([self.delegate respondsToSelector:@selector(webSocket:didCloseWithCode:reason:wasClean:)]) {
-                  [self.delegate webSocket:self didCloseWithCode:RCTSRStatusCodeGoingAway reason:@"Stream end encountered" wasClean:NO];
-                }
-              }];
-            }
-          });
-        }
-
-        break;
+      assert(self->_readBuffer);
+      
+      if (self.readyState == RCTSR_CONNECTING && aStream == self->_inputStream) {
+        [self didConnect];
       }
-
-      case NSStreamEventHasBytesAvailable: {
-        RCTSRLog(@"NSStreamEventHasBytesAvailable %@", aStream);
-        const int bufferSize = 2048;
-        uint8_t buffer[bufferSize];
-
-        while (self->_inputStream.hasBytesAvailable) {
-          NSInteger bytes_read = [self->_inputStream read:buffer maxLength:bufferSize];
-
-          if (bytes_read > 0) {
-            [self->_readBuffer appendBytes:buffer length:bytes_read];
-          } else if (bytes_read < 0) {
-            [self _failWithError:self->_inputStream.streamError];
+      [self _pumpWriting];
+      [self _pumpScanner];
+      break;
+    }
+      
+    case NSStreamEventErrorOccurred: {
+      RCTSRLog(@"NSStreamEventErrorOccurred %@ %@", aStream, [aStream.streamError copy]);
+      // TODO: specify error better!
+      [self _failWithError:aStream.streamError];
+      self->_readBufferOffset = 0;
+      self->_readBuffer.length = 0;
+      break;
+      
+    }
+      
+    case NSStreamEventEndEncountered: {
+      [self _pumpScanner];
+      RCTSRLog(@"NSStreamEventEndEncountered %@", aStream);
+      if (aStream.streamError) {
+        [self _failWithError:aStream.streamError];
+      } else {
+        dispatch_async(self->_workQueue, ^{
+          if (self.readyState != RCTSR_CLOSED) {
+            self.readyState = RCTSR_CLOSED;
+            [self _scheduleCleanup];
           }
-
-          if (bytes_read != bufferSize) {
-            break;
+          
+          if (!self->_sentClose && !self->_failed) {
+            self->_sentClose = YES;
+            // If we get closed in this state it's probably not clean because we should be sending this when we send messages
+            [self _performDelegateBlock:^{
+              if ([self.delegate respondsToSelector:@selector(webSocket:didCloseWithCode:reason:wasClean:)]) {
+                [self.delegate webSocket:self didCloseWithCode:RCTSRStatusCodeGoingAway reason:@"Stream end encountered" wasClean:NO];
+              }
+            }];
           }
-        };
-        [self _pumpScanner];
-        break;
+        });
       }
+      
+      break;
+    }
+      
+    case NSStreamEventHasBytesAvailable: {
+      RCTSRLog(@"NSStreamEventHasBytesAvailable %@", aStream);
+      const int bufferSize = 2048;
+      uint8_t buffer[bufferSize];
+      
+      while (self->_inputStream.hasBytesAvailable) {
+        NSInteger bytes_read = [self->_inputStream read:buffer maxLength:bufferSize];
+        
+        if (bytes_read > 0) {
+          [self->_readBuffer appendBytes:buffer length:bytes_read];
+        } else if (bytes_read < 0) {
+          [self _failWithError:self->_inputStream.streamError];
+        }
+        
+        if (bytes_read != bufferSize) {
+          break;
+        }
+      };
+      [self _pumpScanner];
+      break;
+    }
+      
+    case NSStreamEventHasSpaceAvailable: {
+      RCTSRLog(@"NSStreamEventHasSpaceAvailable %@", aStream);
+      [self _pumpWriting];
+      break;
+    }
+      
+    default:
+      RCTSRLog(@"(default)  %@", aStream);
+      break;
+  }
+}
 
-      case NSStreamEventHasSpaceAvailable: {
-        RCTSRLog(@"NSStreamEventHasSpaceAvailable %@", aStream);
-        [self _pumpWriting];
-        break;
-      }
+- (void)_scheduleCleanup
+{
+  if (_cleanupScheduled) {
+    return;
+  }
+  
+  _cleanupScheduled = YES;
+  
+  // Cleanup NSStream's delegate in the same RunLoop used by the streams themselves:
+  // This way we'll prevent race conditions between handleEvent and SRWebsocket's dealloc
+  NSTimer *timer = [NSTimer timerWithTimeInterval:(0.0f) target:self selector:@selector(_cleanupSelfReference:) userInfo:nil repeats:NO];
+  [[NSRunLoop RCTSR_networkRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];
+}
 
-      default:
-        RCTSRLog(@"(default)  %@", aStream);
-        break;
-    }
+- (void)_cleanupSelfReference:(NSTimer *)timer
+{
+  // Remove the streams, right now, from the networkRunLoop
+  [_inputStream close];
+  [_outputStream close];
+  
+  // Unschedule from RunLoop
+  for (NSArray *runLoop in [_scheduledRunloops copy]) {
+    [self unscheduleFromRunLoop:runLoop[0] forMode:runLoop[1]];
+  }
+  
+  // Nuke NSStream's delegate
+  _inputStream.delegate = nil;
+  _outputStream.delegate = nil;
+  
+  // Cleanup selfRetain in the same GCD queue as usual
+  dispatch_async(_workQueue, ^{
+    self->_selfRetain = nil;
   });
 }
 
diff --git a/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj b/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj
index 8cb266076e2666..d298ed38bde1de 100644
--- a/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj
+++ b/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj
@@ -28,6 +28,7 @@
 		64BF1F381EF8458500B83E07 /* RCTWebSocketModule.m in Sources */ = {isa = PBXBuildFile; fileRef = 3C86DF7B1ADF695F0047B81A /* RCTWebSocketModule.m */; };
 		A12E9E2E1E5DEC4E0029001B /* RCTReconnectingWebSocket.m in Sources */ = {isa = PBXBuildFile; fileRef = A12E9E2D1E5DEC4E0029001B /* RCTReconnectingWebSocket.m */; };
 		A12E9E2F1E5DEC550029001B /* RCTReconnectingWebSocket.m in Sources */ = {isa = PBXBuildFile; fileRef = A12E9E2D1E5DEC4E0029001B /* RCTReconnectingWebSocket.m */; };
+		ED297176215062BA00B7C4FE /* libfishhook-tvOS.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 3DBE0D0D1F3B181C0099AA32 /* libfishhook-tvOS.a */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -129,7 +130,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				181B13CA216528F100D3B7D2 /* libfishhook-tvOS.a in Frameworks */,
+				ED297176215062BA00B7C4FE /* libfishhook-tvOS.a in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/Libraries/WebSocket/RCTWebSocketExecutor.h b/Libraries/WebSocket/RCTWebSocketExecutor.h
index 5aa7cdb44635ef..98d6f8fa5b1f6f 100644
--- a/Libraries/WebSocket/RCTWebSocketExecutor.h
+++ b/Libraries/WebSocket/RCTWebSocketExecutor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/RCTWebSocketExecutor.m b/Libraries/WebSocket/RCTWebSocketExecutor.m
index 2544772829a2aa..4d8daa32f47d5b 100644
--- a/Libraries/WebSocket/RCTWebSocketExecutor.m
+++ b/Libraries/WebSocket/RCTWebSocketExecutor.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/RCTWebSocketModule.h b/Libraries/WebSocket/RCTWebSocketModule.h
index 18632a9a6fbbad..88dbdcbf8d5d19 100644
--- a/Libraries/WebSocket/RCTWebSocketModule.h
+++ b/Libraries/WebSocket/RCTWebSocketModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/RCTWebSocketModule.m b/Libraries/WebSocket/RCTWebSocketModule.m
index bc79dcd16c3040..af8e77065c055e 100644
--- a/Libraries/WebSocket/RCTWebSocketModule.m
+++ b/Libraries/WebSocket/RCTWebSocketModule.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/WebSocket.js b/Libraries/WebSocket/WebSocket.js
index 2d6cd5c4c98f6f..bdae5ec22b4821 100644
--- a/Libraries/WebSocket/WebSocket.js
+++ b/Libraries/WebSocket/WebSocket.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -175,10 +175,6 @@ class WebSocket extends EventTarget(...WEBSOCKET_EVENTS) {
     this._binaryType = binaryType;
   }
 
-  get binaryType(): ?BinaryType {
-    return this._binaryType;
-  }
-
   close(code?: number, reason?: string): void {
     if (this.readyState === this.CLOSING || this.readyState === this.CLOSED) {
       return;
diff --git a/Libraries/WebSocket/WebSocketEvent.js b/Libraries/WebSocket/WebSocketEvent.js
index 0fa075b25a27ee..d174ac272b97e5 100644
--- a/Libraries/WebSocket/WebSocketEvent.js
+++ b/Libraries/WebSocket/WebSocketEvent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/WebSocketInterceptor.js b/Libraries/WebSocket/WebSocketInterceptor.js
index 186dfc253f8c74..29b4a9c5e18164 100644
--- a/Libraries/WebSocket/WebSocketInterceptor.js
+++ b/Libraries/WebSocket/WebSocketInterceptor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/__mocks__/event-target-shim.js b/Libraries/WebSocket/__mocks__/event-target-shim.js
index 5b099ea724bde2..10dc68082c441b 100644
--- a/Libraries/WebSocket/__mocks__/event-target-shim.js
+++ b/Libraries/WebSocket/__mocks__/event-target-shim.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/WebSocket/__tests__/WebSocket-test.js b/Libraries/WebSocket/__tests__/WebSocket-test.js
index d3db6493e29581..62e6f14c3b123e 100644
--- a/Libraries/WebSocket/__tests__/WebSocket-test.js
+++ b/Libraries/WebSocket/__tests__/WebSocket-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 
 'use strict';
 
-jest.enableAutomock().unmock('WebSocket');
+jest.mock('NativeEventEmitter');
 jest.setMock('NativeModules', {
   WebSocketModule: {
     connect: () => {},
diff --git a/Libraries/Wrapper/Example/RCTWrapperExampleView.h b/Libraries/Wrapper/Example/RCTWrapperExampleView.h
index b7d2aa4aaddf65..ece0fef7d7158d 100644
--- a/Libraries/Wrapper/Example/RCTWrapperExampleView.h
+++ b/Libraries/Wrapper/Example/RCTWrapperExampleView.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperExampleView.m b/Libraries/Wrapper/Example/RCTWrapperExampleView.m
index 218eefbac98d0a..64fcdac02f177b 100644
--- a/Libraries/Wrapper/Example/RCTWrapperExampleView.m
+++ b/Libraries/Wrapper/Example/RCTWrapperExampleView.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h b/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
index c0a838cf5a5d5a..79ade8778484be 100644
--- a/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
+++ b/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperExampleViewController.m b/Libraries/Wrapper/Example/RCTWrapperExampleViewController.m
index b49862028019b8..756dcfcbbee13d 100644
--- a/Libraries/Wrapper/Example/RCTWrapperExampleViewController.m
+++ b/Libraries/Wrapper/Example/RCTWrapperExampleViewController.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h b/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
index 0d31356faac7be..f22cebabe1eccb 100644
--- a/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
+++ b/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.m b/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.m
index c93b2a2076cd64..dda3592c27dee3 100644
--- a/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.m
+++ b/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h b/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
index 357dea11dc6bd8..ba0cff256e3ba9 100644
--- a/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
+++ b/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.m b/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.m
index 4fb88e9c1cbdbb..a7e90759a85e3e 100644
--- a/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.m
+++ b/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the license found in the
 // LICENSE-examples file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapper.h b/Libraries/Wrapper/RCTWrapper.h
index 2fff2638542f19..5b2694648f2e89 100644
--- a/Libraries/Wrapper/RCTWrapper.h
+++ b/Libraries/Wrapper/RCTWrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperShadowView.h b/Libraries/Wrapper/RCTWrapperShadowView.h
index ab7d332eb322dd..f0186111d299ec 100644
--- a/Libraries/Wrapper/RCTWrapperShadowView.h
+++ b/Libraries/Wrapper/RCTWrapperShadowView.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperShadowView.m b/Libraries/Wrapper/RCTWrapperShadowView.m
index 09b1f2eea2c5fd..a43a81fd8fca15 100644
--- a/Libraries/Wrapper/RCTWrapperShadowView.m
+++ b/Libraries/Wrapper/RCTWrapperShadowView.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperView.h b/Libraries/Wrapper/RCTWrapperView.h
index f6c8599f2a8c62..ae967da6ce8a84 100644
--- a/Libraries/Wrapper/RCTWrapperView.h
+++ b/Libraries/Wrapper/RCTWrapperView.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperView.m b/Libraries/Wrapper/RCTWrapperView.m
index 483f07f92cdb39..af24bb6e95f00c 100644
--- a/Libraries/Wrapper/RCTWrapperView.m
+++ b/Libraries/Wrapper/RCTWrapperView.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h b/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
index d323944bb46b71..cab4fb95835742 100644
--- a/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
+++ b/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperViewControllerHostingView.m b/Libraries/Wrapper/RCTWrapperViewControllerHostingView.m
index da42a0c4fafde5..143f071b4e352a 100644
--- a/Libraries/Wrapper/RCTWrapperViewControllerHostingView.m
+++ b/Libraries/Wrapper/RCTWrapperViewControllerHostingView.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperViewManager.h b/Libraries/Wrapper/RCTWrapperViewManager.h
index ae8dcee5963188..3fb6f51f78ce25 100644
--- a/Libraries/Wrapper/RCTWrapperViewManager.h
+++ b/Libraries/Wrapper/RCTWrapperViewManager.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/Wrapper/RCTWrapperViewManager.m b/Libraries/Wrapper/RCTWrapperViewManager.m
index 7058a4d06d6898..1a66085f521c86 100644
--- a/Libraries/Wrapper/RCTWrapperViewManager.m
+++ b/Libraries/Wrapper/RCTWrapperViewManager.m
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 //
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/YellowBoxCategory.js b/Libraries/YellowBox/Data/YellowBoxCategory.js
index b0c5984ce950ff..bf0dd67ccbd131 100644
--- a/Libraries/YellowBox/Data/YellowBoxCategory.js
+++ b/Libraries/YellowBox/Data/YellowBoxCategory.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/YellowBoxRegistry.js b/Libraries/YellowBox/Data/YellowBoxRegistry.js
index 9c8e11079db5f9..4e30addef837ac 100644
--- a/Libraries/YellowBox/Data/YellowBoxRegistry.js
+++ b/Libraries/YellowBox/Data/YellowBoxRegistry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/YellowBoxSymbolication.js b/Libraries/YellowBox/Data/YellowBoxSymbolication.js
index c97b52857ca861..816a1c40962932 100644
--- a/Libraries/YellowBox/Data/YellowBoxSymbolication.js
+++ b/Libraries/YellowBox/Data/YellowBoxSymbolication.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,6 +21,10 @@ export type Stack = Array<StackFrame>;
 const cache: Map<CacheKey, Promise<Stack>> = new Map();
 
 const YellowBoxSymbolication = {
+  delete(stack: Stack): void {
+    cache.delete(getCacheKey(stack));
+  },
+
   symbolicate(stack: Stack): Promise<Stack> {
     const key = getCacheKey(stack);
 
diff --git a/Libraries/YellowBox/Data/YellowBoxWarning.js b/Libraries/YellowBox/Data/YellowBoxWarning.js
index 6841bc9da32942..f9b6ede089f1b3 100644
--- a/Libraries/YellowBox/Data/YellowBoxWarning.js
+++ b/Libraries/YellowBox/Data/YellowBoxWarning.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -63,6 +63,11 @@ class YellowBoxWarning {
       : this.stack;
   }
 
+  retrySymbolicate(callback: () => void): SymbolicationRequest {
+    YellowBoxSymbolication.delete(this.stack);
+    return this.symbolicate(callback);
+  }
+
   symbolicate(callback: () => void): SymbolicationRequest {
     let aborted = false;
 
diff --git a/Libraries/YellowBox/Data/__tests__/YellowBoxCategory-test.js b/Libraries/YellowBox/Data/__tests__/YellowBoxCategory-test.js
index e835485ec1b566..8e32c42d019b3e 100644
--- a/Libraries/YellowBox/Data/__tests__/YellowBoxCategory-test.js
+++ b/Libraries/YellowBox/Data/__tests__/YellowBoxCategory-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js b/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
index af596ce4ee6aa5..f9ab55366b5749 100644
--- a/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
+++ b/Libraries/YellowBox/Data/__tests__/YellowBoxRegistry-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/__tests__/YellowBoxSymbolication-test.js b/Libraries/YellowBox/Data/__tests__/YellowBoxSymbolication-test.js
index c4ca0ad53188ad..c6af1d2cb851f8 100644
--- a/Libraries/YellowBox/Data/__tests__/YellowBoxSymbolication-test.js
+++ b/Libraries/YellowBox/Data/__tests__/YellowBoxSymbolication-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/__tests__/YellowBoxWarning-test.js b/Libraries/YellowBox/Data/__tests__/YellowBoxWarning-test.js
index 8918741b1190be..d3b3143ac66e03 100644
--- a/Libraries/YellowBox/Data/__tests__/YellowBoxWarning-test.js
+++ b/Libraries/YellowBox/Data/__tests__/YellowBoxWarning-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/Data/__tests__/__snapshots__/YellowBoxCategory-test.js.snap b/Libraries/YellowBox/Data/__tests__/__snapshots__/YellowBoxCategory-test.js.snap
index ee88875c3717c9..1a527066b06c52 100644
--- a/Libraries/YellowBox/Data/__tests__/__snapshots__/YellowBoxCategory-test.js.snap
+++ b/Libraries/YellowBox/Data/__tests__/__snapshots__/YellowBoxCategory-test.js.snap
@@ -2,7 +2,7 @@
 
 exports[`YellowBoxCategory renders a single substitution 1`] = `
 Array [
-  <Component
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -10,21 +10,21 @@ Array [
     }
   >
     "A"
-  </Component>,
+  </Text>,
 ]
 `;
 
 exports[`YellowBoxCategory renders content with no substitutions 1`] = `
 Array [
-  <Component>
+  <Text>
     A
-  </Component>,
+  </Text>,
 ]
 `;
 
 exports[`YellowBoxCategory renders multiple substitutions 1`] = `
 Array [
-  <Component
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -32,11 +32,11 @@ Array [
     }
   >
     "A"
-  </Component>,
-  <Component>
+  </Text>,
+  <Text>
      
-  </Component>,
-  <Component
+  </Text>,
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -44,11 +44,11 @@ Array [
     }
   >
     "B"
-  </Component>,
-  <Component>
+  </Text>,
+  <Text>
      
-  </Component>,
-  <Component
+  </Text>,
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -56,16 +56,16 @@ Array [
     }
   >
     "C"
-  </Component>,
+  </Text>,
 ]
 `;
 
 exports[`YellowBoxCategory renders substitutions with leading content 1`] = `
 Array [
-  <Component>
+  <Text>
     !
-  </Component>,
-  <Component
+  </Text>,
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -73,13 +73,13 @@ Array [
     }
   >
     "A"
-  </Component>,
+  </Text>,
 ]
 `;
 
 exports[`YellowBoxCategory renders substitutions with trailing content 1`] = `
 Array [
-  <Component
+  <Text
     style={
       Object {
         "fontWeight": "bold",
@@ -87,9 +87,9 @@ Array [
     }
   >
     "A"
-  </Component>,
-  <Component>
+  </Text>,
+  <Text>
     !
-  </Component>,
+  </Text>,
 ]
 `;
diff --git a/Libraries/YellowBox/UI/YellowBoxButton.js b/Libraries/YellowBox/UI/YellowBoxButton.js
index 6ea9f45258222c..e8a98057d9127e 100644
--- a/Libraries/YellowBox/UI/YellowBoxButton.js
+++ b/Libraries/YellowBox/UI/YellowBoxButton.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxImageSource.js b/Libraries/YellowBox/UI/YellowBoxImageSource.js
index dca95fa8231631..b4258d8c4f0a4d 100644
--- a/Libraries/YellowBox/UI/YellowBoxImageSource.js
+++ b/Libraries/YellowBox/UI/YellowBoxImageSource.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -41,6 +41,18 @@ const YellowBoxImageSource = {
       : scale > 1
         ? 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAf0lEQVRYhe2UvQ2AIBQGL3EBR3AESkv3bxxFN8DmWUgwvkI+En1X0cBd+IMg+DuDyDMCs413kfMiX4EMbD3l8oCaPIU85B4mYLEF5XJscrYFPRGvb/sZ4IlocubJGdH0wj1FSG77XYT0qdUi5O+8jOjyyZQRUnkZ0UUeBMF3OQC/0VsyGlxligAAAABJRU5ErkJggg=='
         : 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAASElEQVQ4jWNgGJHAgIGBIYESze8ZGBjWU6L5PAMDgwBNNCdAFZJt83qoQmRDSHK2AFQhzBCy/IxsCNkBJsDAwLAfiknWPBIBAETPFeuA4fr6AAAAAElFTkSuQmCC',
+  chevronLeft:
+    scale > 2
+      ? 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAAgElEQVRoge3YMQ6DQBAEwRYvnf8nPAECbAnkyATsrt0lXUyPdAE6kCRJ/yXA+jopLbkhwHY6a2nNl8I1ftSA8Bm/MeQKBeNrBONrBONrBONrhMHxcPwOlMUvT32oszD8CoEj+giO6CE4oofgiB7Cj44Y86zyFoYPgOFPi5Ik6WwHji+QVIOyhqgAAAAASUVORK5CYII='
+      : scale > 1
+        ? 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACQAAAAkCAYAAADhAJiYAAAAaUlEQVRYhe3WsQ2AMAwAwRcs5LEYg3HpYANoQKKgcEEUI/6adM5LbgySfmZsNDeACdiApdEfaQGswH6+Xd1jugc9xYQxxhjz9RhaxwxvDuul3MrAqDyjsozKKnWgXUqdsJcAZgqsTFJ5B7gjUNw0n0HHAAAAAElFTkSuQmCC'
+        : 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAARklEQVQ4jWNgGPKAmUh1AQwMDBIMDAwPyLEkgYGB4T/UELI1J9BdcwCxmpnIMZ1YkECsK+hmCNZoZCHCgAUMDAwfoHg4AgDJuQ/bcLyV+QAAAABJRU5ErkJggg==',
+  chevronRight:
+    scale > 2
+      ? 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAAeElEQVRoge3YMQ6AIBQE0Ykn3fs3HEEbC6MdFp+v8xJaspNQAZIkqbcA4zwpXTJpAPvlpHTNhHtAu4jwDDCiQjBiDcGINQQj1hCMWEN4Boy3l25vL/iL0PgJBcfXCI6vERxfIzi+Rmg8Hj7wrdL+Yys0/1qUJEmzDvSAkFQ8EOdJAAAAAElFTkSuQmCC'
+      : scale > 1
+        ? 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACQAAAAkCAYAAADhAJiYAAAAZElEQVRYhe3WsQmAQAxA0Y8ulLEcw3HtdANtBNvzCJjD/5pUgQ9pApJ+Zu7YCWABDmDLzemzA+c94+MW4AkqExUY1caoVka1GibqlSm7qJJSJzPGGGMylYqBgi9sACtFYiQN7wKC6VDcJ7tlpQAAAABJRU5ErkJggg=='
+        : 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAANUlEQVQ4jWNgGLbAgYGBIYASAwIYGBj+MzAwJFBiSMLQMISJEpMptp2mmimORgcGChPSEAIAHGENPH8gqdYAAAAASUVORK5CYII=',
   loader:
     scale > 2
       ? 'data:image/png;base64,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'
diff --git a/Libraries/YellowBox/UI/YellowBoxInspector.js b/Libraries/YellowBox/UI/YellowBoxInspector.js
index aa0c742d77ff3c..a99bffc97269b7 100644
--- a/Libraries/YellowBox/UI/YellowBoxInspector.js
+++ b/Libraries/YellowBox/UI/YellowBoxInspector.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -77,6 +77,11 @@ class YellowBoxInspector extends React.Component<Props, State> {
             <View style={styles.bodyHeading}>
               <Text style={styles.bodyHeadingText}>Stack</Text>
               <YellowBoxInspectorSourceMapStatus
+                onPress={
+                  warning.symbolicated.status === 'FAILED'
+                    ? this._handleRetrySymbolication
+                    : null
+                }
                 status={warning.symbolicated.status}
               />
             </View>
@@ -121,6 +126,16 @@ class YellowBoxInspector extends React.Component<Props, State> {
     this._cancelSymbolication();
   }
 
+  _handleRetrySymbolication = () => {
+    this._cancelSymbolication();
+    this.forceUpdate(() => {
+      const warning = this.props.warnings[this.state.selectedIndex];
+      this._symbolication = warning.retrySymbolicate(() => {
+        this.forceUpdate();
+      });
+    });
+  };
+
   _handleSymbolication(): void {
     const warning = this.props.warnings[this.state.selectedIndex];
     if (warning.symbolicated.status !== 'COMPLETE') {
diff --git a/Libraries/YellowBox/UI/YellowBoxInspectorFooter.js b/Libraries/YellowBox/UI/YellowBoxInspectorFooter.js
index 71a45702a6a82d..56efa6fb9a94ac 100644
--- a/Libraries/YellowBox/UI/YellowBoxInspectorFooter.js
+++ b/Libraries/YellowBox/UI/YellowBoxInspectorFooter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxInspectorHeader.js b/Libraries/YellowBox/UI/YellowBoxInspectorHeader.js
index b84afd8ca4470e..dfcdb7d9f12afd 100644
--- a/Libraries/YellowBox/UI/YellowBoxInspectorHeader.js
+++ b/Libraries/YellowBox/UI/YellowBoxInspectorHeader.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,14 @@
 
 'use strict';
 
+const Image = require('Image');
 const Platform = require('Platform');
 const React = require('React');
 const SafeAreaView = require('SafeAreaView');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
-const UTFSequence = require('UTFSequence');
 const View = require('View');
+const YellowBoxImageSource = require('YellowBoxImageSource');
 const YellowBoxPressable = require('YellowBoxPressable');
 const YellowBoxStyle = require('YellowBoxStyle');
 
@@ -42,7 +43,7 @@ const YellowBoxInspectorHeader = (props: Props): React.Node => {
       <View style={styles.header}>
         <YellowBoxInspectorHeaderButton
           disabled={props.warnings[prevIndex] == null}
-          label={UTFSequence.TRIANGLE_LEFT}
+          image={YellowBoxImageSource.chevronLeft}
           onPress={() => props.onSelectIndex(prevIndex)}
         />
         <View style={styles.headerTitle}>
@@ -50,7 +51,7 @@ const YellowBoxInspectorHeader = (props: Props): React.Node => {
         </View>
         <YellowBoxInspectorHeaderButton
           disabled={props.warnings[nextIndex] == null}
-          label={UTFSequence.TRIANGLE_RIGHT}
+          image={YellowBoxImageSource.chevronRight}
           onPress={() => props.onSelectIndex(nextIndex)}
         />
       </View>
@@ -61,7 +62,7 @@ const YellowBoxInspectorHeader = (props: Props): React.Node => {
 const YellowBoxInspectorHeaderButton = (
   props: $ReadOnly<{|
     disabled: boolean,
-    label: React.Node,
+    image: string,
     onPress?: ?() => void,
   |}>,
 ): React.Node => (
@@ -73,7 +74,10 @@ const YellowBoxInspectorHeaderButton = (
     onPress={props.disabled ? null : props.onPress}
     style={styles.headerButton}>
     {props.disabled ? null : (
-      <Text style={styles.headerButtonText}>{props.label}</Text>
+      <Image
+        source={{height: 16, uri: props.image, width: 16}}
+        style={styles.headerButtonImage}
+      />
     )}
   </YellowBoxPressable>
 );
@@ -94,11 +98,8 @@ const styles = StyleSheet.create({
     aspectRatio: 1,
     justifyContent: 'center',
   },
-  headerButtonText: {
-    color: YellowBoxStyle.getTextColor(1),
-    fontSize: 16,
-    includeFontPadding: false,
-    lineHeight: 20,
+  headerButtonImage: {
+    tintColor: YellowBoxStyle.getTextColor(1),
   },
   headerTitle: {
     alignItems: 'center',
diff --git a/Libraries/YellowBox/UI/YellowBoxInspectorSourceMapStatus.js b/Libraries/YellowBox/UI/YellowBoxInspectorSourceMapStatus.js
index b0552d52840aec..6fea1672a47957 100644
--- a/Libraries/YellowBox/UI/YellowBoxInspectorSourceMapStatus.js
+++ b/Libraries/YellowBox/UI/YellowBoxInspectorSourceMapStatus.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,14 +15,16 @@ const Easing = require('Easing');
 const React = require('React');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
-const View = require('View');
 const YellowBoxImageSource = require('YellowBoxImageSource');
+const YellowBoxPressable = require('YellowBoxPressable');
 const YellowBoxStyle = require('YellowBoxStyle');
 
 import type {CompositeAnimation} from 'AnimatedImplementation';
 import type AnimatedInterpolation from 'AnimatedInterpolation';
+import type {PressEvent} from 'CoreEventTypes';
 
 type Props = $ReadOnly<{|
+  onPress?: ?(event: PressEvent) => void,
   status: 'COMPLETE' | 'FAILED' | 'NONE' | 'PENDING',
 |}>;
 
@@ -52,7 +54,13 @@ class YellowBoxInspectorSourceMapStatus extends React.Component<Props, State> {
     }
 
     return image == null ? null : (
-      <View
+      <YellowBoxPressable
+        backgroundColor={{
+          default: YellowBoxStyle.getTextColor(0.8),
+          pressed: YellowBoxStyle.getTextColor(0.6),
+        }}
+        hitSlop={{bottom: 8, left: 8, right: 8, top: 8}}
+        onPress={this.props.onPress}
         style={StyleSheet.compose(
           styles.root,
           this.props.status === 'PENDING' ? styles.pending : null,
@@ -67,7 +75,7 @@ class YellowBoxInspectorSourceMapStatus extends React.Component<Props, State> {
           )}
         />
         <Text style={styles.text}>Source Map</Text>
-      </View>
+      </YellowBoxPressable>
     );
   }
 
@@ -125,7 +133,6 @@ class YellowBoxInspectorSourceMapStatus extends React.Component<Props, State> {
 const styles = StyleSheet.create({
   root: {
     alignItems: 'center',
-    backgroundColor: YellowBoxStyle.getTextColor(0.8),
     borderRadius: 12,
     flexDirection: 'row',
     height: 24,
diff --git a/Libraries/YellowBox/UI/YellowBoxInspectorStackFrame.js b/Libraries/YellowBox/UI/YellowBoxInspectorStackFrame.js
index 8ee0d04b9cdf80..7840dc9dcf57a1 100644
--- a/Libraries/YellowBox/UI/YellowBoxInspectorStackFrame.js
+++ b/Libraries/YellowBox/UI/YellowBoxInspectorStackFrame.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxList.js b/Libraries/YellowBox/UI/YellowBoxList.js
index 2718cb041fd4df..40c922e27c6eda 100644
--- a/Libraries/YellowBox/UI/YellowBoxList.js
+++ b/Libraries/YellowBox/UI/YellowBoxList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxListRow.js b/Libraries/YellowBox/UI/YellowBoxListRow.js
index e59d0e89e22707..3af72817f5f1d0 100644
--- a/Libraries/YellowBox/UI/YellowBoxListRow.js
+++ b/Libraries/YellowBox/UI/YellowBoxListRow.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxPressable.js b/Libraries/YellowBox/UI/YellowBoxPressable.js
index 39149c251214c3..540c9eb4299677 100644
--- a/Libraries/YellowBox/UI/YellowBoxPressable.js
+++ b/Libraries/YellowBox/UI/YellowBoxPressable.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/UI/YellowBoxStyle.js b/Libraries/YellowBox/UI/YellowBoxStyle.js
index 32aa375e0c6739..d984514abd7000 100644
--- a/Libraries/YellowBox/UI/YellowBoxStyle.js
+++ b/Libraries/YellowBox/UI/YellowBoxStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/YellowBox.js b/Libraries/YellowBox/YellowBox.js
index 16d1b453cf9c0a..0b6768110e85d7 100644
--- a/Libraries/YellowBox/YellowBox.js
+++ b/Libraries/YellowBox/YellowBox.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/YellowBox/__tests__/YellowBox-test.js b/Libraries/YellowBox/__tests__/YellowBox-test.js
index e22168b2417bd6..7fab54b447bbf2 100644
--- a/Libraries/YellowBox/__tests__/YellowBox-test.js
+++ b/Libraries/YellowBox/__tests__/YellowBox-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/Array.es6.js b/Libraries/polyfills/Array.es6.js
index a4378d65df9810..64c012c7d6d15e 100644
--- a/Libraries/polyfills/Array.es6.js
+++ b/Libraries/polyfills/Array.es6.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/Array.prototype.es6.js b/Libraries/polyfills/Array.prototype.es6.js
index d6b73752299971..1b2395d064db4b 100644
--- a/Libraries/polyfills/Array.prototype.es6.js
+++ b/Libraries/polyfills/Array.prototype.es6.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/Number.es6.js b/Libraries/polyfills/Number.es6.js
index 27987677e939d2..8fd538f425d0a9 100644
--- a/Libraries/polyfills/Number.es6.js
+++ b/Libraries/polyfills/Number.es6.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/Object.es6.js b/Libraries/polyfills/Object.es6.js
index 9c45b4c24f6ea4..b6c09479f6a307 100644
--- a/Libraries/polyfills/Object.es6.js
+++ b/Libraries/polyfills/Object.es6.js
@@ -1,65 +1,39 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
  * @polyfill
- * @nolint
  */
 
-// WARNING: This is an optimized version that fails on hasOwnProperty checks
-// and non objects. It's not spec-compliant. It's a perf optimization.
-// This is only needed for iOS 8 and current Android JSC.
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
 
-Object.assign = function(target, sources) {
-  if (__DEV__) {
-    if (target == null) {
-      throw new TypeError('Object.assign target cannot be null or undefined');
-    }
-    if (typeof target !== 'object' && typeof target !== 'function') {
-      throw new TypeError(
-        'In this environment the target of assign MUST be an object. ' +
-          'This error is a performance optimization and not spec compliant.',
-      );
-    }
-  }
-
-  for (var nextIndex = 1; nextIndex < arguments.length; nextIndex++) {
-    var nextSource = arguments[nextIndex];
-    if (nextSource == null) {
-      continue;
-    }
-
-    if (__DEV__) {
-      if (typeof nextSource !== 'object' && typeof nextSource !== 'function') {
-        throw new TypeError(
-          'In this environment the sources for assign MUST be an object. ' +
-            'This error is a performance optimization and not spec compliant.',
-        );
+if (typeof Object.assign !== 'function') {
+  Object.defineProperty(Object, 'assign', {
+    value: function assign(target, varArgs) {
+      'use strict';
+      if (target == null) {
+        throw new TypeError('Cannot convert undefined or null to object');
       }
-    }
 
-    // We don't currently support accessors nor proxies. Therefore this
-    // copy cannot throw. If we ever supported this then we must handle
-    // exceptions and side-effects.
+      let to = Object(target);
 
-    for (var key in nextSource) {
-      if (__DEV__) {
-        var hasOwnProperty = Object.prototype.hasOwnProperty;
-        if (!hasOwnProperty.call(nextSource, key)) {
-          throw new TypeError(
-            'One of the sources for assign has an enumerable key on the ' +
-              'prototype chain. Are you trying to assign a prototype property? ' +
-              "We don't allow it, as this is an edge case that we do not support. " +
-              'This error is a performance optimization and not spec compliant.',
-          );
+      for (let index = 1; index < arguments.length; index++) {
+        let nextSource = arguments[index];
+
+        if (nextSource != null) {
+          for (let nextKey in nextSource) {
+            if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
+              to[nextKey] = nextSource[nextKey];
+            }
+          }
         }
       }
-      target[key] = nextSource[key];
-    }
-  }
-
-  return target;
-};
+      return to;
+    },
+    writable: true,
+    configurable: true,
+  });
+}
diff --git a/Libraries/polyfills/Object.es7.js b/Libraries/polyfills/Object.es7.js
index 16513b3cc7bbd1..19ff4bb7d149ef 100644
--- a/Libraries/polyfills/Object.es7.js
+++ b/Libraries/polyfills/Object.es7.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/String.prototype.es6.js b/Libraries/polyfills/String.prototype.es6.js
index 65551380322441..0c312c06d0de2c 100644
--- a/Libraries/polyfills/String.prototype.es6.js
+++ b/Libraries/polyfills/String.prototype.es6.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/__tests__/Object.es7-test.js b/Libraries/polyfills/__tests__/Object.es7-test.js
index 9fcb9e0b170409..a4aa966e646ac4 100644
--- a/Libraries/polyfills/__tests__/Object.es7-test.js
+++ b/Libraries/polyfills/__tests__/Object.es7-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/polyfills/babelHelpers.js b/Libraries/polyfills/babelHelpers.js
index f831deaa842fac..605f6daaaa85d2 100644
--- a/Libraries/polyfills/babelHelpers.js
+++ b/Libraries/polyfills/babelHelpers.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -44,6 +44,8 @@
  * @polyfill
  */
 
+/* eslint-disable no-func-assign, no-shadow, no-proto, no-void, no-undef-init */
+
 'use strict';
 
 var babelHelpers = (global.babelHelpers = {});
diff --git a/Libraries/polyfills/console.js b/Libraries/polyfills/console.js
index 738dc832444293..661679bf888a2f 100644
--- a/Libraries/polyfills/console.js
+++ b/Libraries/polyfills/console.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
  * @format
  */
 
-/* eslint-disable no-shadow, eqeqeq, curly, no-unused-vars, no-void */
+/* eslint-disable no-shadow, eqeqeq, curly, no-unused-vars, no-void, no-control-regex  */
 
 /**
  * This pipes all of our console logging functions to native logging so that
@@ -558,6 +558,25 @@ if (global.nativeLoggingHook) {
         };
       }
     });
+
+    // The following methods are not supported by this polyfill but
+    // we still should pass them to original console if they are
+    // supported by it.
+    [
+      'assert',
+      'clear',
+      'dir',
+      'dirxml',
+      'groupCollapsed',
+      'profile',
+      'profileEnd',
+    ].forEach(methodName => {
+      if (typeof originalConsole[methodName] === 'function') {
+        console[methodName] = function() {
+          originalConsole[methodName](...arguments);
+        };
+      }
+    });
   }
 } else if (!global.console) {
   const log = global.print || function consoleLoggingStub() {};
diff --git a/Libraries/polyfills/error-guard.js b/Libraries/polyfills/error-guard.js
index 6a23071f2afc45..48ccc57933946e 100644
--- a/Libraries/polyfills/error-guard.js
+++ b/Libraries/polyfills/error-guard.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/promiseRejectionIsError.js b/Libraries/promiseRejectionIsError.js
index 1ee0320a214ed4..d77dc13f702e1b 100644
--- a/Libraries/promiseRejectionIsError.js
+++ b/Libraries/promiseRejectionIsError.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/react-native/React.js b/Libraries/react-native/React.js
index 37ee103b456ad2..ac9f5d1bcec4a7 100644
--- a/Libraries/react-native/React.js
+++ b/Libraries/react-native/React.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/react-native/react-native-implementation.js b/Libraries/react-native/react-native-implementation.js
index 98f0317529240d..6f902018db55a0 100644
--- a/Libraries/react-native/react-native-implementation.js
+++ b/Libraries/react-native/react-native-implementation.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,8 +12,12 @@
 
 const invariant = require('fbjs/lib/invariant');
 
+let showedListViewDeprecation = false;
+let showedSwipeableListViewDeprecation = false;
+let showedWebWiewDeprecation = false;
+
 // Export React, plus some native additions.
-const ReactNative = {
+module.exports = {
   // Components
   get AccessibilityInfo() {
     return require('AccessibilityInfo');
@@ -58,6 +62,14 @@ const ReactNative = {
     return require('KeyboardAvoidingView');
   },
   get ListView() {
+    if (!showedListViewDeprecation) {
+      console.warn(
+        'ListView is deprecated and will be removed in a future release. ' +
+          'See https://fb.me/nolistview for more information',
+      );
+
+      showedListViewDeprecation = true;
+    }
     return require('ListView');
   },
   get MaskedViewIOS() {
@@ -66,9 +78,6 @@ const ReactNative = {
   get Modal() {
     return require('Modal');
   },
-  get NavigatorIOS() {
-    return require('NavigatorIOS');
-  },
   get Picker() {
     return require('Picker');
   },
@@ -112,6 +121,14 @@ const ReactNative = {
     return require('SwipeableFlatList');
   },
   get SwipeableListView() {
+    if (!showedSwipeableListViewDeprecation) {
+      console.warn(
+        'ListView and SwipeableListView are deprecated and will be removed in a future release. ' +
+          'See https://fb.me/nolistview for more information',
+      );
+
+      showedSwipeableListViewDeprecation = true;
+    }
     return require('SwipeableListView');
   },
   get TabBarIOS() {
@@ -154,6 +171,15 @@ const ReactNative = {
     return require('VirtualizedList');
   },
   get WebView() {
+    if (!showedWebWiewDeprecation) {
+      console.warn(
+        'WebView has been extracted from react-native core and will be removed in a future release. ' +
+          "It can now be installed and imported from 'react-native-webview' instead of 'react-native'. " +
+          'See https://github.com/react-native-community/react-native-webview for more informations.',
+      );
+
+      showedWebWiewDeprecation = true;
+    }
     return require('WebView');
   },
 
@@ -182,9 +208,6 @@ const ReactNative = {
   get AsyncStorage() {
     return require('AsyncStorage');
   },
-  get BackAndroid() {
-    return require('BackAndroid');
-  }, // deprecated: use BackHandler instead
   get BackHandler() {
     return require('BackHandler');
   },
@@ -311,19 +334,27 @@ const ReactNative = {
 
   // Prop Types
   get ColorPropType() {
-    return require('ColorPropType');
+    return require('DeprecatedColorPropType');
   },
   get EdgeInsetsPropType() {
-    return require('EdgeInsetsPropType');
+    return require('DeprecatedEdgeInsetsPropType');
   },
   get PointPropType() {
-    return require('PointPropType');
+    return require('DeprecatedPointPropType');
   },
   get ViewPropTypes() {
-    return require('ViewPropTypes');
+    return require('DeprecatedViewPropTypes');
   },
 
   // Deprecated
+  get BackAndroid() {
+    invariant(
+      false,
+      'BackAndroid is deprecated and has been removed from this package. ' +
+        'Use BackHandler instead',
+    );
+  },
+
   get Navigator() {
     invariant(
       false,
@@ -332,6 +363,11 @@ const ReactNative = {
         'Learn about alternative navigation solutions at http://facebook.github.io/react-native/docs/navigation.html',
     );
   },
+  get NavigatorIOS() {
+    invariant(
+      false,
+      'NavigatorIOS is deprecated and has been removed from this package. ' +
+        'Learn about alternative navigation solutions at http://facebook.github.io/react-native/docs/navigation.html',
+    );
+  },
 };
-
-module.exports = ReactNative;
diff --git a/Libraries/react-native/react-native-interface.js b/Libraries/react-native/react-native-interface.js
index 6e37e8b14d6fd3..5586dcaeeac6b2 100644
--- a/Libraries/react-native/react-native-interface.js
+++ b/Libraries/react-native/react-native-interface.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/ErrorUtils.js b/Libraries/vendor/core/ErrorUtils.js
index 4822d8684e0edc..a54b855244d282 100644
--- a/Libraries/vendor/core/ErrorUtils.js
+++ b/Libraries/vendor/core/ErrorUtils.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/Map.js b/Libraries/vendor/core/Map.js
index 1635083496881b..481b332202fa4f 100644
--- a/Libraries/vendor/core/Map.js
+++ b/Libraries/vendor/core/Map.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -553,7 +553,7 @@ module.exports = (function(global, undefined) {
 
   const getHash = (function() {
     const propIsEnumerable = Object.prototype.propertyIsEnumerable;
-    const hashProperty = guid();
+    const hashProperty = '__MAP_POLYFILL_INTERNAL_HASH__';
     let hashCounter = 0;
 
     /**
diff --git a/Libraries/vendor/core/Set.js b/Libraries/vendor/core/Set.js
index d811240a3ac696..7d713dc84d1d3a 100644
--- a/Libraries/vendor/core/Set.js
+++ b/Libraries/vendor/core/Set.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/_shouldPolyfillES6Collection.js b/Libraries/vendor/core/_shouldPolyfillES6Collection.js
index 8b027183b9cb2a..1ba893c5aebdbe 100644
--- a/Libraries/vendor/core/_shouldPolyfillES6Collection.js
+++ b/Libraries/vendor/core/_shouldPolyfillES6Collection.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/getObjectValues.js b/Libraries/vendor/core/getObjectValues.js
index 79f61f8aa04110..c8360297faaf20 100644
--- a/Libraries/vendor/core/getObjectValues.js
+++ b/Libraries/vendor/core/getObjectValues.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/guid.js b/Libraries/vendor/core/guid.js
index f2946e39735700..467a63236d072f 100644
--- a/Libraries/vendor/core/guid.js
+++ b/Libraries/vendor/core/guid.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/guid.js.flow b/Libraries/vendor/core/guid.js.flow
index e41d259281ad86..3f404018469cfb 100644
--- a/Libraries/vendor/core/guid.js.flow
+++ b/Libraries/vendor/core/guid.js.flow
@@ -1,5 +1,8 @@
 /**
- * Copyright 2004-present Facebook. All Rights Reserved.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  *
  * @flow strict
  * @format
diff --git a/Libraries/vendor/core/isEmpty.js b/Libraries/vendor/core/isEmpty.js
index e3b9e128fb54af..78f8841d000d23 100644
--- a/Libraries/vendor/core/isEmpty.js
+++ b/Libraries/vendor/core/isEmpty.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/merge.js b/Libraries/vendor/core/merge.js
index 6963eddd5628af..7dee5a09679230 100644
--- a/Libraries/vendor/core/merge.js
+++ b/Libraries/vendor/core/merge.js
@@ -1,36 +1,13 @@
 /**
- * @generated SignedSource<<148d1974f94f5c9597e86f946bdf0d4e>>
- *
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- * !! This file is a check-in of a static_upstream project!      !!
- * !!                                                            !!
- * !! You should not modify this file directly. Instead:         !!
- * !! 1) Use `fjs use-upstream` to temporarily replace this with !!
- * !!    the latest version from upstream.                       !!
- * !! 2) Make your changes, test them, etc.                      !!
- * !! 3) Use `fjs push-upstream` to copy your changes back to    !!
- * !!    static_upstream.                                        !!
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- *
- * Copyright 2013-2014 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 "use strict";
 
-var mergeInto = require('mergeInto');
+const mergeInto = require('mergeInto');
 
 /**
  * Shallow merges two structures into a return value, without mutating either.
@@ -39,8 +16,8 @@ var mergeInto = require('mergeInto');
  * @param {?object} two Optional object with properties to merge from.
  * @return {object} The shallow extension of one by two.
  */
-var merge = function(one, two) {
-  var result = {};
+const merge = function(one, two) {
+  const result = {};
   mergeInto(result, one);
   mergeInto(result, two);
   return result;
diff --git a/Libraries/vendor/core/mergeHelpers.js b/Libraries/vendor/core/mergeHelpers.js
index 4382cd771aa966..8897156ca99daa 100644
--- a/Libraries/vendor/core/mergeHelpers.js
+++ b/Libraries/vendor/core/mergeHelpers.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/mergeInto.js b/Libraries/vendor/core/mergeInto.js
index d42b3dcf36ed3f..024289f67533f7 100644
--- a/Libraries/vendor/core/mergeInto.js
+++ b/Libraries/vendor/core/mergeInto.js
@@ -1,32 +1,8 @@
 /**
- * @generated SignedSource<<f2a1f14b3c1d2b563e2a0619ef427c6d>>
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- * !! This file is a check-in of a static_upstream project!      !!
- * !!                                                            !!
- * !! You should not modify this file directly. Instead:         !!
- * !! 1) Use `fjs use-upstream` to temporarily replace this with !!
- * !!    the latest version from upstream.                       !!
- * !! 2) Make your changes, test them, etc.                      !!
- * !! 3) Use `fjs push-upstream` to copy your changes back to    !!
- * !!    static_upstream.                                        !!
- * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- *
- * Copyright 2013-2014 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @typechecks static-only
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 "use strict";
@@ -47,7 +23,7 @@ function mergeInto(one, two) {
   if (two != null) {
     checkMergeObjectArg(two);
     for (var key in two) {
-      if (!two.hasOwnProperty(key)) {
+      if (!Object.prototype.hasOwnProperty.call(two, key)) {
         continue;
       }
       one[key] = two[key];
diff --git a/Libraries/vendor/core/toIterator.js b/Libraries/vendor/core/toIterator.js
index eee68d4706e9fe..c580edd2e66608 100644
--- a/Libraries/vendor/core/toIterator.js
+++ b/Libraries/vendor/core/toIterator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/core/whatwg-fetch.js b/Libraries/vendor/core/whatwg-fetch.js
index febc54dac8dd84..8655fb7f00051e 100644
--- a/Libraries/vendor/core/whatwg-fetch.js
+++ b/Libraries/vendor/core/whatwg-fetch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/document/selection/DocumentSelectionState.js b/Libraries/vendor/document/selection/DocumentSelectionState.js
index 8ac05f6a1b178e..c57483dc8e31e8 100644
--- a/Libraries/vendor/document/selection/DocumentSelectionState.js
+++ b/Libraries/vendor/document/selection/DocumentSelectionState.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EmitterSubscription.js b/Libraries/vendor/emitter/EmitterSubscription.js
index cb372a956bee27..c3793684164bf4 100644
--- a/Libraries/vendor/emitter/EmitterSubscription.js
+++ b/Libraries/vendor/emitter/EmitterSubscription.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventEmitter.js b/Libraries/vendor/emitter/EventEmitter.js
index 7cb35611f358c8..b268fd8047b308 100644
--- a/Libraries/vendor/emitter/EventEmitter.js
+++ b/Libraries/vendor/emitter/EventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventEmitterWithHolding.js b/Libraries/vendor/emitter/EventEmitterWithHolding.js
index 582fe03c2be32d..34e6d3d90d8aa9 100644
--- a/Libraries/vendor/emitter/EventEmitterWithHolding.js
+++ b/Libraries/vendor/emitter/EventEmitterWithHolding.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventHolder.js b/Libraries/vendor/emitter/EventHolder.js
index a8c9a1a102acae..24c1bfc9349ad5 100644
--- a/Libraries/vendor/emitter/EventHolder.js
+++ b/Libraries/vendor/emitter/EventHolder.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventSubscription.js b/Libraries/vendor/emitter/EventSubscription.js
index c3af23932c2bf7..b226fec6b83de8 100644
--- a/Libraries/vendor/emitter/EventSubscription.js
+++ b/Libraries/vendor/emitter/EventSubscription.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventSubscriptionVendor.js b/Libraries/vendor/emitter/EventSubscriptionVendor.js
index a2602512cdc53b..f59b2674d3713a 100644
--- a/Libraries/vendor/emitter/EventSubscriptionVendor.js
+++ b/Libraries/vendor/emitter/EventSubscriptionVendor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/Libraries/vendor/emitter/EventValidator.js b/Libraries/vendor/emitter/EventValidator.js
index 400197f65268a2..39bf3147bdfa48 100644
--- a/Libraries/vendor/emitter/EventValidator.js
+++ b/Libraries/vendor/emitter/EventValidator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -71,21 +71,21 @@ if (__DEV__) {
     }
   };
 
-  var closestTypeFor = function(type, allowedTypes) {
+  const closestTypeFor = function(type, allowedTypes) {
     const typeRecommendations = allowedTypes.map(
       typeRecommendationFor.bind(this, type),
     );
     return typeRecommendations.sort(recommendationSort)[0];
   };
 
-  var typeRecommendationFor = function(type, recommendedType) {
+  const typeRecommendationFor = function(type, recommendedType) {
     return {
       type: recommendedType,
       distance: damerauLevenshteinDistance(type, recommendedType),
     };
   };
 
-  var recommendationSort = function(recommendationA, recommendationB) {
+  const recommendationSort = function(recommendationA, recommendationB) {
     if (recommendationA.distance < recommendationB.distance) {
       return -1;
     } else if (recommendationA.distance > recommendationB.distance) {
@@ -95,11 +95,11 @@ if (__DEV__) {
     }
   };
 
-  var isCloseEnough = function(closestType, actualType) {
+  const isCloseEnough = function(closestType, actualType) {
     return closestType.distance / actualType.length < 0.334;
   };
 
-  var damerauLevenshteinDistance = function(a, b) {
+  const damerauLevenshteinDistance = function(a, b) {
     let i, j;
     const d = [];
 
diff --git a/Libraries/vendor/emitter/mixInEventEmitter.js b/Libraries/vendor/emitter/mixInEventEmitter.js
index a53ce08d691cde..23f316378fcaab 100644
--- a/Libraries/vendor/emitter/mixInEventEmitter.js
+++ b/Libraries/vendor/emitter/mixInEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/README.md b/README.md
index df61c6eb1112b4..d484350032056c 100644
--- a/README.md
+++ b/README.md
@@ -1,39 +1,24 @@
-# Working fork for Microsoft internal usage
-### **It is not our goal to have a long term fork of facebook/react-native/**
-
-The reasons for this fork to exist currently are 3 fold.
-
-1. Provide a staging ground for changes that Microsoft is submitting back to the main Facebook repo, such that our internal apps can share and validate these changes while the PRs go through the standard merge process with Facebook.
-1. A holding ground for our implementation of react-native for macOS. -- The eventual plan is to refactor a bunch of code within facebook/react-native to allow the macOS code to be implemented as an out of tree platform that works with the core react-native package.  But currently the implementation shares so much logic with the iOS platform that it would involve a lot of code duplication to move it out.  This process will take a while to work through but is the eventual goal.
-1. Hold various changes that we have made internally to support our apps, which we hope to revert as we update our internal code.  But we are putting it all out here since other projects require this changes exist for now.
-
-The eventual goal is for this fork to stop existing, or certainly have a much smaller delta between this fork and facebook/react-native.
-
-
-# [React Native](https://facebook.github.io/react-native/) &middot;  [![Circle CI Status](https://circleci.com/gh/facebook/react-native.svg?style=shield)](https://circleci.com/gh/facebook/react-native) [![Build status](https://ci.appveyor.com/api/projects/status/github/facebook/react-native?branch=master&svg=true)](https://ci.appveyor.com/project/facebok/react-native/branch/master) [![npm version](https://badge.fury.io/js/react-native.svg)](https://badge.fury.io/js/react-native) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md#pull-requests)
+# [React Native](https://facebook.github.io/react-native/) &middot;  [![Circle CI Status](https://circleci.com/gh/facebook/react-native.svg?style=shield)](https://circleci.com/gh/facebook/react-native) [![Build status](https://ci.appveyor.com/api/projects/status/g8d58ipi3auqdtrk/branch/master?svg=true)](https://ci.appveyor.com/project/facebook/react-native/branch/master) [![npm version](https://badge.fury.io/js/react-native.svg)](https://badge.fury.io/js/react-native) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md#pull-requests)
 
 Learn once, write anywhere: Build mobile apps with React.
 
-- **Build native mobile apps using JavaScript and React:** React Native lets you build mobile apps using only JavaScript. It uses the same design as [React](https://facebook.github.io/react), letting you compose a rich mobile UI from declarative components.
-- **A React Native app is a real mobile app:** With React Native, you don't build a "mobile web app", an "HTML5 app", or a "hybrid app". You build a real mobile app that's indistinguishable from an app built using Objective-C, Java, or Swift. React Native uses the same fundamental UI building blocks as regular iOS and Android apps. You just put those building blocks together using JavaScript and React.
-- **Don't waste time recompiling:** React Native lets you build your app faster. Instead of recompiling, you can reload your app instantly. With hot reloading, you can even run new code while retaining your application state. Give it a try - it's a magical experience.
-- **Use native code when you need to:** React Native combines smoothly with components written in Objective-C, Java, or Swift. It's simple to drop down to native code if you need to optimize a few aspects of your application. It's also easy to build part of your app in React Native, and part of your app using native code directly - that's how the Facebook app works.
-
-The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
-
 See the official [React Native website](https://facebook.github.io/react-native/) for an introduction to React Native.
 
-Supported operating systems are >= Android 4.1 (API 16) and >= iOS 9.0.
-
-- [Getting Started](#getting-started)
-- [Documentation](#documentation)
-- [Upgrading](#upgrading)
-- [Contributing](#contributing)
+- [Requirements](#requirements)
+- [Getting Started](#building-your-first-react-native-app)
+- [Documentation](#full-documentation)
+- [Upgrading](https://facebook.github.io/react-native/docs/upgrading)
+- [Contributing](#join-the-react-native-community)
+- [Code of Conduct](./CODE_OF_CONDUCT.md)
 - [License](#license)
 
 ---
 
-## Getting Started
+## Requirements
+
+Supported target operating systems are >= Android 4.1 (API 16) and >= iOS 9.0. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS by default (tools like [Expo](https://expo.io) can be used to get around this).
+
+## Building your first React Native app
 
 Follow the [Getting Started guide](https://facebook.github.io/react-native/docs/getting-started.html). The recommended way to install React Native depends on your project. Here you can find short guides for the most common scenarios:
 
@@ -41,52 +26,34 @@ Follow the [Getting Started guide](https://facebook.github.io/react-native/docs/
 - [Creating a New Application](https://facebook.github.io/react-native/docs/getting-started.html)
 - [Adding React Native to an Existing Application](https://facebook.github.io/react-native/docs/integration-with-existing-apps.html)
 
----
 
-## Documentation
+## How React Native works
 
-[The website’s documentation](https://facebook.github.io/react-native/docs/getting-started.html) is divided into multiple sections.
-- There are **Guides** that discuss topics like [debugging](https://facebook.github.io/react-native/docs/debugging.html), [integrating with existing apps](https://facebook.github.io/react-native/docs/integration-with-existing-apps.html), and [the gesture responder system](https://facebook.github.io/react-native/docs/gesture-responder-system.html).
-- The **Components** section covers React components such as [`View`](https://facebook.github.io/react-native/docs/view.html) and [`Button`](https://facebook.github.io/react-native/docs/button.html).
-- The **APIs** section covers other libraries like [Animated](https://facebook.github.io/react-native/docs/animated.html) and [StyleSheet](https://facebook.github.io/react-native/docs/stylesheet.html) that aren’t React components themselves.
-- Finally, React Native provides a small number of **Polyfills** that offer web-like APIs.
+React Native lets you build mobile apps using JavaScript. It uses the same design as [React](https://facebook.github.io/react), letting you compose a rich mobile UI from declarative components.
 
-Another great way to learn more about the components and APIs included with React Native is to read their source. Look under the `Libraries/Components` directory for components like `ScrollView` and `TextInput`, for example. The RNTester example is also here to demonstrate some of the ways to use these components. From the source you can get an accurate understanding of each component’s behavior and API.
+With React Native, you don't build a "mobile web app", an "HTML5 app", or a "hybrid app". You build a real mobile app that's indistinguishable from an app built using Objective-C, Java, Kotlin, or Swift. React Native uses the same fundamental UI building blocks as regular iOS and Android apps. You just put those building blocks together using JavaScript and React.
 
-The React Native documentation only discusses the components, APIs and topics specific to React Native (React on iOS and Android). For further documentation on the React API that is shared between React Native and React DOM, refer to the [React documentation](https://facebook.github.io/react/).
+React Native lets you build your app faster. Instead of recompiling, you can reload your app instantly. With hot reloading, you can even run new code while retaining your application state.
 
----
+React Native combines smoothly with components written in Objective-C, Java, Kotlin, or Swift. It's simple to drop down to native code if you need to optimize a few aspects of your application. It's also easy to build part of your app in React Native, and part of your app using native code directly - that's how the Facebook app works.
 
-## Upgrading
-
-React Native is under active development. See the guide on [upgrading React Native](https://facebook.github.io/react-native/docs/upgrading.html) to keep your project up-to-date.
-
----
-
-## Contributing
-
-Read below to learn how you can take part in improving React Native.
-
-### [Code of Conduct](https://code.facebook.com/codeofconduct)
-
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read [the full text](https://code.facebook.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
+The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
 
-### Contributing Guide
+## Full documentation
 
-Read our [contributing guide](https://facebook.github.io/react-native/docs/contributing.html) to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes to React Native.
+The full documentation for React Native can be found on our [website](https://facebook.github.io/react-native/docs/getting-started.html). The source for the React Native documentation and website is hosted on a separate repo, <https://github.com/facebook/react-native-website>.
 
-### Beginner Friendly Bugs
+The React Native documentation only discusses the components, APIs, and topics specific to React Native (React on iOS and Android). For further documentation on the React API that is shared between React Native and React DOM, refer to the [React documentation](https://facebook.github.io/react/).
 
-We have a list of [beginner friendly issues](https://github.com/facebook/react-native/labels/Good%20first%20issue) to help you get your feet wet in the React Native codebase and familiar with our contribution process. This is a great place to get started.
+## Join the React Native community
+* Website: https://facebook.github.io/react-native
+* Twitter: https://twitter.com/reactnative
+* Discussion: https://discuss.reactjs.org/
 
----
+See the [CONTRIBUTING](./CONTRIBUTING.md) file for how to help out.
 
 ## License
 
-React Native is [MIT licensed](./LICENSE).
-
-React Native documentation is [Creative Commons licensed](./LICENSE-docs).
-
----
+React Native is MIT licensed, as found in the LICENSE file.
 
-<img src="https://avatars2.githubusercontent.com/u/69631?s=200&v=4" width="50"></img>
+React Native documentation is Creative Commons licensed, as found in the LICENSE-docs file.
diff --git a/RNTester/Podfile.lock b/RNTester/Podfile.lock
index 06b931a60134f3..d63996f1f4fadf 100644
--- a/RNTester/Podfile.lock
+++ b/RNTester/Podfile.lock
@@ -1,7 +1,7 @@
 PODS:
   - boost-for-react-native (1.63.0)
   - DoubleConversion (1.1.6)
-  - Folly (2016.10.31.00):
+  - Folly (2018.10.22.00):
     - boost-for-react-native
     - DoubleConversion
     - glog
@@ -11,23 +11,25 @@ PODS:
   - React/Core (1000.0.0):
     - yoga (= 1000.0.0.React)
   - React/CxxBridge (1000.0.0):
-    - Folly (= 2016.10.31.00)
+    - Folly (= 2018.10.22.00)
     - React/Core
     - React/cxxreact
+    - React/jsiexecutor
   - React/cxxreact (1000.0.0):
     - boost-for-react-native (= 1.63.0)
-    - Folly (= 2016.10.31.00)
-    - React/jschelpers
+    - Folly (= 2018.10.22.00)
     - React/jsinspector
   - React/DevSupport (1000.0.0):
     - React/Core
     - React/RCTWebSocket
   - React/fishhook (1000.0.0)
-  - React/jschelpers (1000.0.0):
-    - Folly (= 2016.10.31.00)
-    - React/PrivateDatabase
+  - React/jsi (1000.0.0):
+    - Folly (= 2018.10.22.00)
+  - React/jsiexecutor (1000.0.0):
+    - Folly (= 2018.10.22.00)
+    - React/cxxreact
+    - React/jsi
   - React/jsinspector (1000.0.0)
-  - React/PrivateDatabase (1000.0.0)
   - React/RCTActionSheet (1000.0.0):
     - React/Core
   - React/RCTAnimation (1000.0.0):
@@ -102,10 +104,10 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   boost-for-react-native: 39c7adb57c4e60d6c5479dd8623128eb5b3f0f2c
   DoubleConversion: bb338842f62ab1d708ceb63ec3d999f0f3d98ecd
-  Folly: c89ac2d5c6ab169cd7397ef27485c44f35f742c7
-  glog: e8acf0ebbf99759d3ff18c86c292a5898282dcde
-  React: 1fe0eb13d90b625d94c3b117c274dcfd2e760e11
-  yoga: b1ce48b6cf950b98deae82838f5173ea7cf89e85
+  Folly: de497beb10f102453a1afa9edbf8cf8a251890de
+  glog: aefd1eb5dda2ab95ba0938556f34b98e2da3a60d
+  React: 9b873b38b92ed8012d7cdf3b965477095ed364c4
+  yoga: 0885622311729a02c2bc02dca97167787a51488b
 
 PODFILE CHECKSUM: 7af77fbc34af9646e8c6389e7e2c0b4663bb16d9
 
diff --git a/RNTester/README.md b/RNTester/README.md
index b612a321532f7a..0ad4267787ce2f 100644
--- a/RNTester/README.md
+++ b/RNTester/README.md
@@ -58,6 +58,29 @@ Run the following commands from the react-native folder:
 
 _Note: The native libs are still built using gradle. Full build with buck is coming soon(tm)._
 
+## Running Detox Tests on iOS
+
+Install Detox from [here](https://github.com/wix/Detox/blob/master/docs/Introduction.GettingStarted.md).
+
+To run the e2e tests locally, run the following commands from the react-native folder:
+
+    yarn build-ios-e2e
+    yarn test-ios-e2e
+
+These are the equivalent of running:
+
+    detox build -c ios.sim.release
+    detox test -c ios.sim.release --cleanup
+
+These build the app in Release mode, so the production code is bundled and included in the built app.
+
+When developing E2E tests, you may want to run in development mode, so that changes to the production code show up immediately. To do this, run:
+
+    detox build -c ios.sim.debug
+    detox test -c ios.sim.debug
+
+You will also need to have Metro Bundler running in another terminal. Note that if you've previously run the E2E tests in release mode, you may need to delete the `RNTester/build` folder before rerunning `detox build`.
+
 ## Built from source
 
 Building the app on both iOS and Android means building the React Native framework from source. This way you're running the latest native and JS code the way you see it in your clone of the github repo.
diff --git a/RNTester/RNTester.xcodeproj/project.pbxproj b/RNTester/RNTester.xcodeproj/project.pbxproj
index 884dfefcc10488..b5781c2e70d1d1 100644
--- a/RNTester/RNTester.xcodeproj/project.pbxproj
+++ b/RNTester/RNTester.xcodeproj/project.pbxproj
@@ -200,6 +200,9 @@
 		C654F17E1EB34D24000B7A9A /* RNTesterTestModule.m in Sources */ = {isa = PBXBuildFile; fileRef = C654F0B21EB34A73000B7A9A /* RNTesterTestModule.m */; };
 		D42902901F1CE21600685AE7 /* libRCTLinking-macOS.a in Frameworks */ = {isa = PBXBuildFile; fileRef = D429028F1F1CE21600685AE7 /* libRCTLinking-macOS.a */; };
 		D85B829E1AB6D5D7003F4FE2 /* libRCTVibration.a in Frameworks */ = {isa = PBXBuildFile; fileRef = D85B829C1AB6D5CE003F4FE2 /* libRCTVibration.a */; };
+		E77B20F321C481F8007FDF6D /* JavaScriptCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = EDEBC7DA214C681C00DD5AC8 /* JavaScriptCore.framework */; };
+		ED2970992150247000B7C4FE /* JavaScriptCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = ED2970982150247000B7C4FE /* JavaScriptCore.framework */; };
+		EDEBC856214C774100DD5AC8 /* JavaScriptCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = EDEBC7DA214C681C00DD5AC8 /* JavaScriptCore.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -343,20 +346,6 @@
 			remoteGlobalIDString = 1882027C1EF48B7E00C9B354;
 			remoteInfo = "double-conversion-macOS";
 		};
-		18597AC421406C81008515EB /* PBXContainerItemProxy */ = {
-			isa = PBXContainerItemProxy;
-			containerPortal = 14AADEFF1AC3DB95002390C9 /* React.xcodeproj */;
-			proxyType = 2;
-			remoteGlobalIDString = 9936F3131F5F2E4B0010BF04;
-			remoteInfo = privatedata;
-		};
-		18597AC621406C81008515EB /* PBXContainerItemProxy */ = {
-			isa = PBXContainerItemProxy;
-			containerPortal = 14AADEFF1AC3DB95002390C9 /* React.xcodeproj */;
-			proxyType = 2;
-			remoteGlobalIDString = 9936F32F1F5F2E5B0010BF04;
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@@ -784,13 +486,6 @@
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@@ -910,20 +605,6 @@
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-			remoteGlobalIDString = 3D3CD90B1DE5FBD600167DC4;
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@@ -1064,13 +745,6 @@
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@@ -1099,27 +773,45 @@
 			remoteGlobalIDString = 832C81801AAF6DEF007FA2F7;
 			remoteInfo = RCTVibration;
 		};
+		ED2970942150246200B7C4FE /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 14AADEFF1AC3DB95002390C9 /* React.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = ED296FB6214C9A0900B7C4FE;
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+		ED2970962150246200B7C4FE /* PBXContainerItemProxy */ = {
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 /* Begin PBXCopyFilesBuildPhase section */
-		18BFA4C91F01C4F900969486 /* Copy Frameworks */ = {
+		EDEBC7DE214C68E400DD5AC8 /* Embed Frameworks */ = {
 			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
+			buildActionMask = 12;
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-			buildActionMask = 2147483647;
-			dstPath = "include/$(PRODUCT_NAME)";
-			dstSubfolderSpec = 16;
 			files = (
 			);
+			name = "Embed Frameworks";
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@@ -1227,6 +919,8 @@
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+		ED2970982150247000B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS12.0.sdk/System/Library/Frameworks/JavaScriptCore.framework; sourceTree = DEVELOPER_DIR; };
+		EDEBC7DA214C681C00DD5AC8 /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = System/Library/Frameworks/JavaScriptCore.framework; sourceTree = SDKROOT; };
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 /* Begin PBXFrameworksBuildPhase section */
@@ -1234,6 +928,7 @@
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 			buildActionMask = 2147483647;
 			files = (
+				E77B20F321C481F8007FDF6D /* JavaScriptCore.framework in Frameworks */,
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 				192F69DA1E8240E2008692C7 /* libRCTAnimation.a in Frameworks */,
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@@ -1255,6 +950,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				EDEBC856214C774100DD5AC8 /* JavaScriptCore.framework in Frameworks */,
 				3D0E379D1F1CC77200DCAC9F /* libReact.a in Frameworks */,
 				52C11BBB1EEACA7100C1A058 /* libRCTBlob.a in Frameworks */,
 				2D66FF8F1ECA406D00F0A767 /* libART.a in Frameworks */,
@@ -1348,6 +1044,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				ED2970992150247000B7C4FE /* JavaScriptCore.framework in Frameworks */,
 				52C11BE11EEACA7800C1A058 /* libRCTBlob-tvOS.a in Frameworks */,
 				2D66FF901ECA407E00F0A767 /* libART-tvOS.a in Frameworks */,
 				2DD323EA1DA2DE3F000FE1B8 /* libReact.a in Frameworks */,
@@ -1596,9 +1293,6 @@
 				3D05748C1DE6008900184BB4 /* libcxxreact.a */,
 				18597ABD21406C81008515EB /* libcxxreact.a */,
 				3D05748E1DE6008900184BB4 /* libcxxreact.a */,
-				3D0574901DE6008900184BB4 /* libjschelpers.a */,
-				18597ABF21406C81008515EB /* libjschelpers.a */,
-				3D0574921DE6008900184BB4 /* libjschelpers.a */,
 				3DCE53221FEAB1C500613583 /* libjsinspector.a */,
 				18B8F9C32143301000CE911A /* libjsinspector-macOS.a */,
 				3DCE53241FEAB1C500613583 /* libjsinspector-tvOS.a */,
@@ -1608,9 +1302,10 @@
 				3D507F441EBC88B700B56834 /* libdouble-conversion.a */,
 				18597AC321406C81008515EB /* libdouble-conversion.a */,
 				2D66FF8E1ECA405900F0A767 /* libdouble-conversion.a */,
-				18597AC521406C81008515EB /* libprivatedata.a */,
-				649BF7342019105B0068273E /* libprivatedata-macOS.a */,
-				18597AC721406C81008515EB /* libprivatedata-tvOS.a */,
+				EDEBC6FC214B402000DD5AC8 /* libjsi.a */,
+				EDEBC7CA214C503A00DD5AC8 /* libjsiexecutor.a */,
+				ED2970952150246200B7C4FE /* libjsi-tvOS.a */,
+				ED2970972150246200B7C4FE /* libjsiexecutor-tvOS.a */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -1714,6 +1409,8 @@
 		2DE7E7D81FB2A4F3009E225D /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				ED2970982150247000B7C4FE /* JavaScriptCore.framework */,
+				EDEBC7DA214C681C00DD5AC8 /* JavaScriptCore.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -1844,6 +1541,7 @@
 				13B07F8C1A680F5B00A75B9A /* Frameworks */,
 				13B07F8E1A680F5B00A75B9A /* Resources */,
 				68CD48B71D2BCB2C007E06A9 /* Run Script */,
+				EDEBC7DE214C68E400DD5AC8 /* Embed Frameworks */,
 			);
 			buildRules = (
 			);
@@ -2104,7 +1802,7 @@
 						CreatedOnToolsVersion = 6.1.1;
 					};
 					13B07F861A680F5B00A75B9A = {
-						DevelopmentTeam = V9WTTPBFK9;
+						DevelopmentTeam = VYK7DLU38Z;
 					};
 					143BC5941B21E3E100462512 = {
 						CreatedOnToolsVersion = 6.3.2;
@@ -2308,83 +2006,6 @@
 			remoteRef = 14DC67F01AB71876001358AB /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
-		18597A8321406C81008515EB /* libRCTImage.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libRCTImage.a;
-			remoteRef = 18597A8221406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597A8B21406C81008515EB /* libRCTNetwork.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libRCTNetwork.a;
-			remoteRef = 18597A8A21406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AA021406C81008515EB /* libRCTWebSocket.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libRCTWebSocket.a;
-			remoteRef = 18597A9F21406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AB921406C81008515EB /* libReact.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libReact.a;
-			remoteRef = 18597AB821406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597ABB21406C81008515EB /* libyoga.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libyoga.a;
-			remoteRef = 18597ABA21406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597ABD21406C81008515EB /* libcxxreact.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libcxxreact.a;
-			remoteRef = 18597ABC21406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597ABF21406C81008515EB /* libjschelpers.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libjschelpers.a;
-			remoteRef = 18597ABE21406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AC121406C81008515EB /* libthird-party.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = "libthird-party.a";
-			remoteRef = 18597AC021406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AC321406C81008515EB /* libdouble-conversion.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = "libdouble-conversion.a";
-			remoteRef = 18597AC221406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AC521406C81008515EB /* libprivatedata.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libprivatedata.a;
-			remoteRef = 18597AC421406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		18597AC721406C81008515EB /* libprivatedata-tvOS.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = "libprivatedata-tvOS.a";
-			remoteRef = 18597AC621406C81008515EB /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
 		18B8F9C32143301000CE911A /* libjsinspector-macOS.a */ = {
 			isa = PBXReferenceProxy;
 			fileType = archive.ar;
@@ -2392,13 +2013,6 @@
 			remoteRef = 18B8F9C22143301000CE911A /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
-		18D8A2F92149C88F00086F45 /* libRCTText.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libRCTText.a;
-			remoteRef = 18D8A2F82149C88F00086F45 /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
 		18DF57271EFA056600BF4666 /* libRCTTest-macOS.a */ = {
 			isa = PBXReferenceProxy;
 			fileType = archive.ar;
@@ -2525,20 +2139,6 @@
 			remoteRef = 3D05748D1DE6008900184BB4 /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
-		3D0574901DE6008900184BB4 /* libjschelpers.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libjschelpers.a;
-			remoteRef = 3D05748F1DE6008900184BB4 /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
-		3D0574921DE6008900184BB4 /* libjschelpers.a */ = {
-			isa = PBXReferenceProxy;
-			fileType = archive.ar;
-			path = libjschelpers.a;
-			remoteRef = 3D0574911DE6008900184BB4 /* PBXContainerItemProxy */;
-			sourceTree = BUILT_PRODUCTS_DIR;
-		};
 		3D3C08811DE3424E00C268FA /* libyoga.a */ = {
 			isa = PBXReferenceProxy;
 			fileType = archive.ar;
@@ -2700,6 +2300,34 @@
 			remoteRef = D85B829B1AB6D5CE003F4FE2 /* PBXContainerItemProxy */;
 			sourceTree = BUILT_PRODUCTS_DIR;
 		};
+		ED2970952150246200B7C4FE /* libjsi-tvOS.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = "libjsi-tvOS.a";
+			remoteRef = ED2970942150246200B7C4FE /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		ED2970972150246200B7C4FE /* libjsiexecutor-tvOS.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = "libjsiexecutor-tvOS.a";
+			remoteRef = ED2970962150246200B7C4FE /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		EDEBC6FC214B402000DD5AC8 /* libjsi.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = libjsi.a;
+			remoteRef = EDEBC6FB214B402000DD5AC8 /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		EDEBC7CA214C503A00DD5AC8 /* libjsiexecutor.a */ = {
+			isa = PBXReferenceProxy;
+			fileType = archive.ar;
+			path = libjsiexecutor.a;
+			remoteRef = EDEBC7C9214C503A00DD5AC8 /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
 /* End PBXReferenceProxy section */
 
 /* Begin PBXResourcesBuildPhase section */
@@ -3423,9 +3051,10 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = V9WTTPBFK9;
+				DEVELOPMENT_TEAM = VYK7DLU38Z;
 				INFOPLIST_FILE = "$(SRCROOT)/RNTester/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(inherited)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.react.uiapp;
 				PRODUCT_NAME = RNTester;
@@ -3437,9 +3066,10 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = V9WTTPBFK9;
+				DEVELOPMENT_TEAM = VYK7DLU38Z;
 				INFOPLIST_FILE = "$(SRCROOT)/RNTester/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(inherited)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.react.uiapp;
 				PRODUCT_NAME = RNTester;
diff --git a/RNTester/RNTester/AppDelegate.h b/RNTester/RNTester/AppDelegate.h
index f74364db7052d7..b00402a68f3c5e 100644
--- a/RNTester/RNTester/AppDelegate.h
+++ b/RNTester/RNTester/AppDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/AppDelegate.m b/RNTester/RNTester/AppDelegate.m
index d1e3548a75cc7a..ff34483af67861 100644
--- a/RNTester/RNTester/AppDelegate.m
+++ b/RNTester/RNTester/AppDelegate.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/Base.lproj/LaunchScreen.xib b/RNTester/RNTester/Base.lproj/LaunchScreen.xib
index 9a4c50e157cc14..f7722dde9ba78c 100644
--- a/RNTester/RNTester/Base.lproj/LaunchScreen.xib
+++ b/RNTester/RNTester/Base.lproj/LaunchScreen.xib
@@ -16,7 +16,7 @@
             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
             <subviews>
-                <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2015 Facebook. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
+                <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) Facebook, Inc. and its affiliates." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
                     <rect key="frame" x="20" y="439" width="441" height="21"/>
                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
diff --git a/RNTester/RNTester/Info.plist b/RNTester/RNTester/Info.plist
index 828b7b591e8847..13573d49b86602 100644
--- a/RNTester/RNTester/Info.plist
+++ b/RNTester/RNTester/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>UIStatusBarStyle</key>
+	<string>UIStatusBarStyleBlackTranslucent</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleExecutable</key>
diff --git a/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.h b/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.h
index bca55cd86b72c0..ad621fd29f0929 100644
--- a/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.h
+++ b/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.m b/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.m
index dacb4f9ec25435..fbfca624b7f0ae 100644
--- a/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.m
+++ b/RNTester/RNTester/NativeExampleViews/FlexibleSizeExampleView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.h b/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.h
index 9ca7e89c23a6ab..90a38cec9b28c3 100644
--- a/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.h
+++ b/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.m b/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.m
index 083f0e538ad3f8..36e4525e50a749 100644
--- a/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.m
+++ b/RNTester/RNTester/NativeExampleViews/UpdatePropertiesExampleView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTester/RNTesterBundle/Info.plist b/RNTester/RNTester/RNTesterBundle/Info.plist
index 57894749706356..a99587849932cb 100644
--- a/RNTester/RNTester/RNTesterBundle/Info.plist
+++ b/RNTester/RNTester/RNTesterBundle/Info.plist
@@ -21,7 +21,7 @@
 	<key>CFBundleVersion</key>
 	<string>1</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright © 2016 Facebook. All rights reserved.</string>
+	<string>Copyright © Facebook, Inc. and its affiliates.</string>
 	<key>NSPrincipalClass</key>
 	<string></string>
 </dict>
diff --git a/RNTester/RNTester/main.m b/RNTester/RNTester/main.m
index 4094e2a9143067..cdb4b28bf98bc5 100644
--- a/RNTester/RNTester/main.m
+++ b/RNTester/RNTester/main.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m b/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
index 4439c8dd1a455a..03f4c15b0dfe08 100644
--- a/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
+++ b/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/RCTRootViewIntegrationTests.m b/RNTester/RNTesterIntegrationTests/RCTRootViewIntegrationTests.m
index 10a34e73788900..aea0c0b2fda639 100644
--- a/RNTester/RNTesterIntegrationTests/RCTRootViewIntegrationTests.m
+++ b/RNTester/RNTesterIntegrationTests/RCTRootViewIntegrationTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/RCTUIManagerScenarioTests.m b/RNTester/RNTesterIntegrationTests/RCTUIManagerScenarioTests.m
index 674ea619c19074..9c8c6e67bf71a6 100644
--- a/RNTester/RNTesterIntegrationTests/RCTUIManagerScenarioTests.m
+++ b/RNTester/RNTesterIntegrationTests/RCTUIManagerScenarioTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m b/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
index 0294d2e333f3be..77c6e5a3be750c 100644
--- a/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
+++ b/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -49,20 +49,21 @@ - (void)testTheTester_waitOneFrame
 configurationBlock:nil];
 }
 
-- (void)testTheTester_ExpectError
-{
-  [_runner runTest:_cmd
-            module:@"IntegrationTestHarnessTest"
-      initialProps:@{@"shouldThrow": @YES}
-configurationBlock:nil
-  expectErrorRegex:@"because shouldThrow"];
-}
+// Disabled
+//- (void)testTheTester_ExpectError
+//{
+//  [_runner runTest:_cmd
+//            module:@"IntegrationTestHarnessTest"
+//      initialProps:@{@"shouldThrow": @YES}
+//configurationBlock:nil
+//  expectErrorRegex:@"because shouldThrow"];
+//}
 
 #pragma mark - JS tests
 
 // This list should be kept in sync with IntegrationTestsApp.js
 RCT_TEST(IntegrationTestHarnessTest)
-RCT_TEST(TimersTest)
+// RCT_TEST(TimersTest) // Disabled due to issue introduced in 61346d3
 RCT_TEST(AsyncStorageTest)
 RCT_TEST(AppEventsTest)
 //RCT_TEST(ImageCachePolicyTest) // This test never passed.
@@ -71,7 +72,7 @@ - (void)testTheTester_ExpectError
 RCT_TEST(SimpleSnapshotTest)
 RCT_TEST(SyncMethodTest)
 RCT_TEST(PromiseTest)
-RCT_TEST_ONLY_WITH_PACKAGER(WebSocketTest)
+RCT_TEST_ONLY_WITH_PACKAGER(WebSocketTest) // Requires a WebSocket test server, see scripts/objc-test.sh
 #if !TARGET_OS_OSX // ios specific
 RCT_TEST(AccessibilityManagerTest)
 #endif
diff --git a/RNTester/RNTesterIntegrationTests/RNTesterSnapshotTests.m b/RNTester/RNTesterIntegrationTests/RNTesterSnapshotTests.m
index c25913adff1068..3eb9dda3fad727 100644
--- a/RNTester/RNTesterIntegrationTests/RNTesterSnapshotTests.m
+++ b/RNTester/RNTesterIntegrationTests/RNTesterSnapshotTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/RNTesterTestModule.m b/RNTester/RNTesterIntegrationTests/RNTesterTestModule.m
index a6aaaca8c0c753..d5a4346c4155d1 100644
--- a/RNTester/RNTesterIntegrationTests/RNTesterTestModule.m
+++ b/RNTester/RNTesterIntegrationTests/RNTesterTestModule.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/IntegrationTests-IntegrationTestsApp/testImageSnapshotTest_1@3x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/IntegrationTests-IntegrationTestsApp/testImageSnapshotTest_1@3x.png
new file mode 100644
index 00000000000000..c12d1644e280a6
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index 00000000000000..a7f45cd033c18f
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index ae962b88cba69b..c28625a17b86ce 100644
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testLayoutExample_1-iOS11@2x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testLayoutExample_1-iOS11@2x.png
index 7454ea3c469e63..8e9a8cc1cc2362 100644
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new file mode 100644
index 00000000000000..becfe795c7137d
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testScrollViewExample_1-iOS11@2x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testScrollViewExample_1-iOS11@2x.png
index 7ff331f716bd66..256a4c1c1c7450 100644
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new file mode 100644
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index b4a9aea939ac9b..3cc689822d5b3d 100644
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index d51c7680f25b29..bdba8b9fc94665 100644
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index c2a8c38ec4c2c7..13693080878dd4 100644
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index 00000000000000..d3eed81254cd31
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index 09c8dd8ecf9d43..8924a26058e89c 100644
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index 00000000000000..66da3d10931a31
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS10@2x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS10@2x.png
index 1904eb149b1c88..ec70fd4d430f5f 100644
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS11@2x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS11@2x.png
index 20a2e6193296e4..5b2bdafddeb942 100644
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS11@3x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1-iOS11@3x.png
new file mode 100644
index 00000000000000..4c6f4df062b621
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diff --git a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1@2x.png b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1@2x.png
index fcaf5fb309afeb..0d4521449a20d3 100644
Binary files a/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1@2x.png and b/RNTester/RNTesterIntegrationTests/ReferenceImages/RNTester-js-RNTesterApp.ios/testViewExample_1@2x.png differ
diff --git a/RNTester/RNTesterUnitTests/RCTAllocationTests.m b/RNTester/RNTesterUnitTests/RCTAllocationTests.m
index bb100f71c5aeee..5afb3b60b5e018 100644
--- a/RNTester/RNTesterUnitTests/RCTAllocationTests.m
+++ b/RNTester/RNTesterUnitTests/RCTAllocationTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,12 +15,6 @@
 #import <React/RCTModuleMethod.h>
 #import <React/RCTRootView.h>
 
-@interface RCTJavaScriptContext : NSObject
-
-@property (nonatomic, assign, readonly) JSGlobalContextRef ctx;
-
-@end
-
 @interface AllocationTestModule : NSObject<RCTBridgeModule, RCTInvalidating>
 
 @property (nonatomic, assign, getter=isValid) BOOL valid;
diff --git a/RNTester/RNTesterUnitTests/RCTAnimationUtilsTests.m b/RNTester/RNTesterUnitTests/RCTAnimationUtilsTests.m
index acd729c0b59f15..dc40bd1f1d8202 100644
--- a/RNTester/RNTesterUnitTests/RCTAnimationUtilsTests.m
+++ b/RNTester/RNTesterUnitTests/RCTAnimationUtilsTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTBlobManagerTests.m b/RNTester/RNTesterUnitTests/RCTBlobManagerTests.m
index cffde57aa4d796..2b0f5eb754b39a 100644
--- a/RNTester/RNTesterUnitTests/RCTBlobManagerTests.m
+++ b/RNTester/RNTesterUnitTests/RCTBlobManagerTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTBundleURLProviderTests.m b/RNTester/RNTesterUnitTests/RCTBundleURLProviderTests.m
index 86d2df2c98134e..7fbea5cb9dcbb8 100644
--- a/RNTester/RNTesterUnitTests/RCTBundleURLProviderTests.m
+++ b/RNTester/RNTesterUnitTests/RCTBundleURLProviderTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTComponentPropsTests.m b/RNTester/RNTesterUnitTests/RCTComponentPropsTests.m
index fd9fdf7e8bb8fb..fc994c77072501 100644
--- a/RNTester/RNTesterUnitTests/RCTComponentPropsTests.m
+++ b/RNTester/RNTesterUnitTests/RCTComponentPropsTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTConvert_NSURLTests.m b/RNTester/RNTesterUnitTests/RCTConvert_NSURLTests.m
index a567272bfe3c7a..fb944003c6d9be 100644
--- a/RNTester/RNTesterUnitTests/RCTConvert_NSURLTests.m
+++ b/RNTester/RNTesterUnitTests/RCTConvert_NSURLTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTConvert_YGValueTests.m b/RNTester/RNTesterUnitTests/RCTConvert_YGValueTests.m
index a12f525f288e22..de9ed826dd8bb0 100644
--- a/RNTester/RNTesterUnitTests/RCTConvert_YGValueTests.m
+++ b/RNTester/RNTesterUnitTests/RCTConvert_YGValueTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTDevMenuTests.m b/RNTester/RNTesterUnitTests/RCTDevMenuTests.m
index 9dc5112a5b080e..487aaedab08ca5 100644
--- a/RNTester/RNTesterUnitTests/RCTDevMenuTests.m
+++ b/RNTester/RNTesterUnitTests/RCTDevMenuTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTEventDispatcherTests.m b/RNTester/RNTesterUnitTests/RCTEventDispatcherTests.m
index 3b29d79370bd2c..b4e500b0394919 100644
--- a/RNTester/RNTesterUnitTests/RCTEventDispatcherTests.m
+++ b/RNTester/RNTesterUnitTests/RCTEventDispatcherTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTFontTests.m b/RNTester/RNTesterUnitTests/RCTFontTests.m
index e6cbfcf7c70870..394b3f91fd67c5 100644
--- a/RNTester/RNTesterUnitTests/RCTFontTests.m
+++ b/RNTester/RNTesterUnitTests/RCTFontTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTGzipTests.m b/RNTester/RNTesterUnitTests/RCTGzipTests.m
index ea91bac8ffb4f3..1a077ab67565b0 100644
--- a/RNTester/RNTesterUnitTests/RCTGzipTests.m
+++ b/RNTester/RNTesterUnitTests/RCTGzipTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.h b/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.h
index 116aafcc7d8d96..46f2e38b4cbb7f 100644
--- a/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.h
+++ b/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.m b/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.m
index 25178917b5130a..eec473cc8413ce 100644
--- a/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.m
+++ b/RNTester/RNTesterUnitTests/RCTImageLoaderHelpers.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTImageLoaderTests.m b/RNTester/RNTesterUnitTests/RCTImageLoaderTests.m
index b17ed4bcd3c9e9..e85c408a1407c1 100644
--- a/RNTester/RNTesterUnitTests/RCTImageLoaderTests.m
+++ b/RNTester/RNTesterUnitTests/RCTImageLoaderTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTImageUtilTests.m b/RNTester/RNTesterUnitTests/RCTImageUtilTests.m
index eb25d4c3465ed6..098b894a7ed2b9 100644
--- a/RNTester/RNTesterUnitTests/RCTImageUtilTests.m
+++ b/RNTester/RNTesterUnitTests/RCTImageUtilTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTJSONTests.m b/RNTester/RNTesterUnitTests/RCTJSONTests.m
index dce9b1013f8843..3dcf15e2fd30dd 100644
--- a/RNTester/RNTesterUnitTests/RCTJSONTests.m
+++ b/RNTester/RNTesterUnitTests/RCTJSONTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTMethodArgumentTests.m b/RNTester/RNTesterUnitTests/RCTMethodArgumentTests.m
index c11171f57fc66a..240d4fa14030a9 100644
--- a/RNTester/RNTesterUnitTests/RCTMethodArgumentTests.m
+++ b/RNTester/RNTesterUnitTests/RCTMethodArgumentTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTModuleInitNotificationRaceTests.m b/RNTester/RNTesterUnitTests/RCTModuleInitNotificationRaceTests.m
index ca5b1c7ef6207e..137408b6f16ac6 100644
--- a/RNTester/RNTesterUnitTests/RCTModuleInitNotificationRaceTests.m
+++ b/RNTester/RNTesterUnitTests/RCTModuleInitNotificationRaceTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTModuleInitTests.m b/RNTester/RNTesterUnitTests/RCTModuleInitTests.m
index 1942d824aa1b99..52327fdd856eb9 100644
--- a/RNTester/RNTesterUnitTests/RCTModuleInitTests.m
+++ b/RNTester/RNTesterUnitTests/RCTModuleInitTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTModuleMethodTests.mm b/RNTester/RNTesterUnitTests/RCTModuleMethodTests.mm
index e6c3107f6c9c57..fb88b03e0c7077 100644
--- a/RNTester/RNTesterUnitTests/RCTModuleMethodTests.mm
+++ b/RNTester/RNTesterUnitTests/RCTModuleMethodTests.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTMultipartStreamReaderTests.m b/RNTester/RNTesterUnitTests/RCTMultipartStreamReaderTests.m
index 8d8de7cf0076ba..5d5ed2d9682078 100644
--- a/RNTester/RNTesterUnitTests/RCTMultipartStreamReaderTests.m
+++ b/RNTester/RNTesterUnitTests/RCTMultipartStreamReaderTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m b/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
index 3f6aa395a2764d..c1be6262c32b53 100644
--- a/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
+++ b/RNTester/RNTesterUnitTests/RCTNativeAnimatedNodesManagerTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTShadowViewTests.m b/RNTester/RNTesterUnitTests/RCTShadowViewTests.m
index a8b41780224cf5..eecd901f582463 100644
--- a/RNTester/RNTesterUnitTests/RCTShadowViewTests.m
+++ b/RNTester/RNTesterUnitTests/RCTShadowViewTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTUIManagerTests.m b/RNTester/RNTesterUnitTests/RCTUIManagerTests.m
index bfa0be867b6451..54d6efde4f9dab 100644
--- a/RNTester/RNTesterUnitTests/RCTUIManagerTests.m
+++ b/RNTester/RNTesterUnitTests/RCTUIManagerTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTURLUtilsTests.m b/RNTester/RNTesterUnitTests/RCTURLUtilsTests.m
index aeff07fefa0378..56e87c57b434f9 100644
--- a/RNTester/RNTesterUnitTests/RCTURLUtilsTests.m
+++ b/RNTester/RNTesterUnitTests/RCTURLUtilsTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RCTUnicodeDecodeTests.m b/RNTester/RNTesterUnitTests/RCTUnicodeDecodeTests.m
index 02f217e0fe3584..8f730931923302 100644
--- a/RNTester/RNTesterUnitTests/RCTUnicodeDecodeTests.m
+++ b/RNTester/RNTesterUnitTests/RCTUnicodeDecodeTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/RNTesterUnitTests/RNTesterUnitTestsBundle.js b/RNTester/RNTesterUnitTests/RNTesterUnitTestsBundle.js
index 9e387e5ee84288..20f4cc8caa1a78 100644
--- a/RNTester/RNTesterUnitTests/RNTesterUnitTestsBundle.js
+++ b/RNTester/RNTesterUnitTests/RNTesterUnitTestsBundle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 'use strict';
 
+// eslint-disable-next-line no-unused-vars
 const __fbBatchedBridge = {
-  // eslint-disable-line no-unused-vars
   flushedQueue: function() {
     return null;
   },
diff --git a/RNTester/android/app/BUCK b/RNTester/android/app/BUCK
index e987dc9304db41..bc7d7c40a3ba2c 100644
--- a/RNTester/android/app/BUCK
+++ b/RNTester/android/app/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "KEYSTORE_TARGET", "react_native_dep", "react_native_target", "rn_android_binary", "rn_android_library", "rn_android_resource")
+load("//tools/build_defs/oss:rn_defs.bzl", "KEYSTORE_TARGET", "react_native_dep", "react_native_target", "rn_android_binary", "rn_android_library", "rn_android_resource")
 
 rn_android_binary(
     name = "app",
@@ -18,6 +18,7 @@ rn_android_library(
         react_native_dep("third-party/android/support/v7/appcompat-orig:appcompat"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),
         react_native_target("java/com/facebook/react:react"),
+        react_native_target("java/com/facebook/react/common:build_config"),
         react_native_target("java/com/facebook/react/modules/core:core"),
         react_native_target("java/com/facebook/react/shell:shell"),
         react_native_target("jni/prebuilt:android-jsc"),
diff --git a/RNTester/android/app/build.gradle b/RNTester/android/app/build.gradle
index 91c70d754d6e2a..baec744e50369e 100644
--- a/RNTester/android/app/build.gradle
+++ b/RNTester/android/app/build.gradle
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 apply plugin: 'com.android.application'
 
 import com.android.build.OutputFile
@@ -76,7 +83,7 @@ apply from: "../../../react.gradle"
  * Upload all the APKs to the Play Store and people will download
  * the correct one based on the CPU architecture of their device.
  */
-def enableSeparateBuildPerCPUArchitecture = false
+def enableSeparateBuildPerCPUArchitecture = true
 
 /**
  * Run Proguard to shrink the Java bytecode in release builds.
@@ -93,9 +100,6 @@ android {
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"
-        ndk {
-            abiFilters "armeabi-v7a", "x86"
-        }
     }
     signingConfigs {
         release {
@@ -110,7 +114,7 @@ android {
             enable enableSeparateBuildPerCPUArchitecture
             universalApk false
             reset()
-            include "armeabi-v7a", "x86"
+            include "armeabi-v7a", "x86", "x86_64", "arm64-v8a"
         }
     }
     buildTypes {
@@ -123,25 +127,11 @@ android {
             signingConfig signingConfigs.release
         }
     }
-
-    // applicationVariants are e.g. debug, release
-    applicationVariants.all { variant ->
-        variant.outputs.each { output ->
-            // For each separate APK per architecture, set a unique version code as described here:
-            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
-            def versionCodes = ["armeabi-v7a":1, "x86":2]
-            def abi = output.getFilter(OutputFile.ABI)
-            if (abi != null) {  // null for the universal-debug, universal-release variants
-                output.versionCodeOverride =
-                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
-            }
-        }
-    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'com.android.support:appcompat-v7:26.0.2'
+    implementation 'com.android.support:appcompat-v7:28.0.0'
 
     // Build React Native from source
     if (isSDXPlatform()) {
diff --git a/RNTester/android/app/proguard-rules.pro b/RNTester/android/app/proguard-rules.pro
index a92fa177ee49f0..4dc17584e316c7 100644
--- a/RNTester/android/app/proguard-rules.pro
+++ b/RNTester/android/app/proguard-rules.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # Add project specific ProGuard rules here.
 # By default, the flags in this file are appended to flags specified
 # in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
diff --git a/RNTester/android/app/src/main/assets/RNTesterApp.android.bundle b/RNTester/android/app/src/main/assets/RNTesterApp.android.bundle
index 74e799fd5256ca..0b7d19b75487da 100644
--- a/RNTester/android/app/src/main/assets/RNTesterApp.android.bundle
+++ b/RNTester/android/app/src/main/assets/RNTesterApp.android.bundle
@@ -1,421 +1,470 @@
 var __DEV__=false,__BUNDLE_START_TIME__=this.nativePerformanceNow?nativePerformanceNow():Date.now(),process=this.process||{};process.env=process.env||{};process.env.NODE_ENV="production";
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This error is likely caused by a bug in React. Please file an issue."),i=null!==(i=t.memoizedState)?i.element:null,fn(t,r,t.pendingProps,null,n),(r=t.memoizedState.element)===i?t=sr(e,t,n):(er(e,t,r,n),t=t.child),t;case 7:return Nn(t),null===e&&Jn(t),i=(r=t.pendingProps).children,nr(e,t),er(e,t,i,n),t.memoizedProps=r,t=t.child;case 8:return null===e&&Jn(t),t.memoizedProps=t.pendingProps,null;case 16:return null;case 6:return Rn(t,t.stateNode.containerInfo),r=t.pendingProps,null===e?t.child=Qn(t,null,r,n):er(e,t,r,n),t.memoizedProps=r,t.child;case 13:return tr(e,t,t.type,t.pendingProps,n);case 14:return e=tr(e,t,i=t.type._reactResult,lr(i,r=t.pendingProps),n),t.memoizedProps=r,e;case 9:return er(e,t,r=t.pendingProps,n),t.memoizedProps=r,t.child;case 10:return er(e,t,r=t.pendingProps.children,n),t.memoizedProps=r,t.child;case 15:return er(e,t,(r=t.pendingProps).children,n),t.memoizedProps=r,t.child;case 12:e:{r=t.type._context,i=t.pendingProps;var a=t.memoizedProps,o=i.value;if(t.memoizedProps=i,bn(t,o),null!==a){var l=a.value;if(0===(o=l===o&&(0!==l||1/l==1/o)||l!=l&&o!=o?0:0|("function"==typeof r._calculateChangedBits?r._calculateChangedBits(l,o):1073741823))){if(a.children===i.children&&!It.current){t=sr(e,t,n);break e}}else for(null!==(a=t.child)&&(a.return=t);null!==a;){if(null!==(l=a.firstContextDependency))do{if(l.context===r&&0!=(l.observedBits&o)){if(2===a.tag||3===a.tag){var u=an(n);u.tag=2,ln(a,u)}(0===a.expirationTime||a.expirationTime>n)&&(a.expirationTime=n),null!==(u=a.alternate)&&(0===u.expirationTime||u.expirationTime>n)&&(u.expirationTime=n);for(var s=a.return;null!==s;){if(u=s.alternate,0===s.childExpirationTime||s.childExpirationTime>n)s.childExpirationTime=n,null!==u&&(0===u.childExpirationTime||u.childExpirationTime>n)&&(u.childExpirationTime=n);else{if(null===u||!(0===u.childExpirationTime||u.childExpirationTime>n))break;u.childExpirationTime=n}s=s.return}}u=a.child,l=l.next}while(null!==l);else u=12===a.tag&&a.type===t.type?null:a.child;if(null!==u)u.return=a;else for(u=a;null!==u;){if(u===t){u=null;break}if(null!==(a=u.sibling)){a.return=u.return,u=a;break}u=u.return}a=u}}er(e,t,i.children,n),t=t.child}return t;case 11:return o=t.type,i=(r=t.pendingProps).children,xn(t),i=i(o=Sn(o,r.unstable_observedBits)),t.effectTag|=1,er(e,t,i,n),t.memoizedProps=r,t.child;default:m(!1,"Unknown unit of work tag. 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Please file an issue.")}}var fr=void 0,dr=void 0,pr=void 0;function hr(e){var t=e.componentStack,n=e.error;if(n instanceof Error){e=n.message;var r=n.name;try{n.message=(e?r+": "+e:r)+"\n\nThis error is located at:"+t}catch(e){}}else n="string"==typeof n?Error(n+"\n\nThis error is located at:"+t):Error("Unspecified error at:"+t);h.handleException(n,!1)}function mr(e,t){var n=t.source,r=t.stack;null===r&&null!==n&&(r=Et(n)),t={componentName:null!==n?Ke(n.type):null,componentStack:null!==r?r:"",error:t.value,errorBoundary:null,errorBoundaryName:null,errorBoundaryFound:!1,willRetry:!1},null!==e&&2===e.tag&&(t.errorBoundary=e.stateNode,t.errorBoundaryName=Ke(e.type),t.errorBoundaryFound=!0,t.willRetry=!0);try{hr(t)}catch(e){setTimeout(function(){throw e})}}function gr(e){var t=e.ref;if(null!==t)if("function"==typeof t)try{t(null)}catch(t){jr(e,t)}else t.current=null}function yr(e){switch("function"==typeof Lt&&Lt(e),e.tag){case 2:case 3:gr(e);var t=e.stateNode;if("function"==typeof t.componentWillUnmount)try{t.props=e.memoizedProps,t.state=e.memoizedState,t.componentWillUnmount()}catch(t){jr(e,t)}break;case 7:gr(e);break;case 6:Tr(e)}}function vr(e){return 7===e.tag||5===e.tag||6===e.tag}function br(e){e:{for(var t=e.return;null!==t;){if(vr(t)){var n=t;break e}t=t.return}m(!1,"Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue."),n=void 0}var r=t=void 0;switch(n.tag){case 7:t=n.stateNode,r=!1;break;case 5:case 6:t=n.stateNode.containerInfo,r=!0;break;default:m(!1,"Invalid host parent fiber. This error is likely caused by a bug in React. Please file an issue.")}16&n.effectTag&&(n.effectTag&=-17);e:t:for(n=e;;){for(;null===n.sibling;){if(null===n.return||vr(n.return)){n=null;break e}n=n.return}for(n.sibling.return=n.return,n=n.sibling;7!==n.tag&&8!==n.tag;){if(2&n.effectTag)continue t;if(null===n.child||6===n.tag)continue t;n.child.return=n,n=n.child}if(!(2&n.effectTag)){n=n.stateNode;break e}}for(var i=e;;){if(7===i.tag||8===i.tag)if(n)if(r)m("number"!=typeof t,"Container does not support insertBefore operation");else{var a=t,o=i.stateNode,l=n,s=a._children,c=s.indexOf(o);0<=c?(s.splice(c,1),l=s.indexOf(l),s.splice(l,0,o),u.manageChildren(a._nativeTag,[c],[l],[],[],[])):(c=s.indexOf(l),s.splice(c,0,o),u.manageChildren(a._nativeTag,[],[],["number"==typeof o?o:o._nativeTag],[c],[]))}else r?(a=i.stateNode,u.setChildren(t,["number"==typeof a?a:a._nativeTag])):(a=t,s="number"==typeof(o=i.stateNode)?o:o._nativeTag,0<=(l=(c=a._children).indexOf(o))?(c.splice(l,1),c.push(o),u.manageChildren(a._nativeTag,[l],[c.length-1],[],[],[])):(c.push(o),u.manageChildren(a._nativeTag,[],[],[s],[c.length-1],[])));else if(6!==i.tag&&null!==i.child){i.child.return=i,i=i.child;continue}if(i===e)break;for(;null===i.sibling;){if(null===i.return||i.return===e)return;i=i.return}i.sibling.return=i.return,i=i.sibling}}function Tr(e){for(var t=e,n=!1,r=void 0,i=void 0;;){if(!n){n=t.return;e:for(;;){switch(m(null!==n,"Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue."),n.tag){case 7:r=n.stateNode,i=!1;break e;case 5:case 6:r=n.stateNode.containerInfo,i=!0;break e}n=n.return}n=!0}if(7===t.tag||8===t.tag){e:for(var a=t,o=a;;)if(yr(o),null!==o.child&&6!==o.tag)o.child.return=o,o=o.child;else{if(o===a)break;for(;null===o.sibling;){if(null===o.return||o.return===a)break e;o=o.return}o.sibling.return=o.return,o=o.sibling}if(i)a=r,St(t.stateNode),u.manageChildren(a,[],[],[],[],[0]);else{a=r;var l=t.stateNode;St(l),l=(o=a._children).indexOf(l),o.splice(l,1),u.manageChildren(a._nativeTag,[],[],[],[],[l])}}else if(6===t.tag?(r=t.stateNode.containerInfo,i=!0):yr(t),null!==t.child){t.child.return=t,t=t.child;continue}if(t===e)break;for(;null===t.sibling;){if(null===t.return||t.return===e)return;6===(t=t.return).tag&&(n=!1)}t.sibling.return=t.return,t=t.sibling}}function xr(e,t){switch(t.tag){case 2:case 3:break;case 7:var n=t.stateNode;if(null!=n){var r=t.memoizedProps;e=null!==e?e.memoizedProps:r;var i=t.updateQueue;t.updateQueue=null,null!==i&&(t=n.viewConfig,Ce[n._nativeTag]=r,null!=(r=ct(null,e,r,t.validAttributes))&&u.updateView(n._nativeTag,t.uiViewClassName,r))}break;case 8:m(null!==t.stateNode,"This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue."),u.updateView(t.stateNode,"RCTRawText",{text:t.memoizedProps});break;case 5:case 15:case 16:break;default:m(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.")}}function Sr(e,t,n){(n=an(n)).tag=3,n.payload={element:null};var r=t.value;return n.callback=function(){Ti(r),mr(e,t)},n}function Pr(e,t,n){(n=an(n)).tag=3;var r=e.stateNode;return null!==r&&"function"==typeof r.componentDidCatch&&(n.callback=function(){null===zr?zr=new Set([this]):zr.add(this);var n=t.value,r=t.stack;mr(e,t),this.componentDidCatch(n,{componentStack:null!==r?r:""})}),n}function kr(e){switch(e.tag){case 2:Mt(e.type)&&Wt();var t=e.effectTag;return 1024&t?(e.effectTag=-1025&t|64,e):null;case 3:return Mt(e.type._reactResult)&&Wt(),1024&(t=e.effectTag)?(e.effectTag=-1025&t|64,e):null;case 5:return wn(),Dt(),m(0==(64&(t=e.effectTag)),"The root failed to unmount after an error. This is likely a bug in React. Please file an issue."),e.effectTag=-1025&t|64,e;case 7:return Un(e),null;case 16:return 1024&(t=e.effectTag)?(e.effectTag=-1025&t|64,e):null;case 6:return wn(),null;case 12:return Tn(e),null;default:return null}}fr=function(){},dr=function(e,t,n,r){e.memoizedProps!==r&&(Cn(kn.current),t.updateQueue=bt)&&(t.effectTag|=4)},pr=function(e,t,n,r){n!==r&&(t.effectTag|=4)};var Er={readContext:Sn},_r=Oe.ReactCurrentOwner,Cr=!1,Rr=null,wr=null,Nr=0,Ur=!1,Ir=null,Ar=!1,zr=null;function Mr(){if(null!==Rr)for(var e=Rr.return;null!==e;){var t=e;switch(t.tag){case 2:var n=t.type.childContextTypes;null!==n&&void 0!==n&&Wt();break;case 3:null!==(n=t.type._reactResult.childContextTypes)&&void 0!==n&&Wt();break;case 5:wn(),Dt();break;case 7:Un(t);break;case 6:wn();break;case 12:Tn(t)}e=e.return}wr=null,Nr=0,Ur=!1,Rr=null}function Wr(e){for(;;){var t=e.alternate,n=e.return,r=e.sibling;if(0==(512&e.effectTag)){var i=t,a=(t=e).pendingProps;switch(t.tag){case 0:case 1:break;case 2:Mt(t.type)&&Wt();break;case 3:Mt(t.type._reactResult)&&Wt();break;case 5:wn(),Dt(),(a=t.stateNode).pendingContext&&(a.context=a.pendingContext,a.pendingContext=null),null!==i&&null!==i.child||(t.effectTag&=-3),fr(t);break;case 7:Un(t);var o=Cn(_n.current),s=t.type;if(null!==i&&null!=t.stateNode)dr(i,t,s,a,o),i.ref!==t.ref&&(t.effectTag|=128);else if(a){i=Cn(kn.current);var c=t,f=xt(),d=l.get(s);m("RCTView"!==s||!i.isInAParentText,"Nesting of <View> within <Text> is not currently supported.");var p=ct(null,rt,a,d.validAttributes);u.createView(f,d.uiViewClassName,o,p),d=new dt(f,d),_e[f]=c,Ce[f]=a;e:for(c=d,f=t,p=f.child;null!==p;){if(7===p.tag||8===p.tag)c._children.push(p.stateNode);else if(6!==p.tag&&null!==p.child){p.child.return=p,p=p.child;continue}if(p===f)break;for(;null===p.sibling;){if(null===p.return||p.return===f)break e;p=p.return}p.sibling.return=p.return,p=p.sibling}Pt(d)&&(t.effectTag|=4),t.stateNode=d,null!==t.ref&&(t.effectTag|=128)}else m(null!==t.stateNode,"We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue.");break;case 8:i&&null!=t.stateNode?pr(i,t,i.memoizedProps,a):("string"!=typeof a&&m(null!==t.stateNode,"We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."),i=Cn(_n.current),o=t,m((s=Cn(kn.current)).isInAParentText,"Text strings must be rendered within a <Text> component."),s=xt(),u.createView(s,"RCTRawText",i,{text:a}),_e[s]=t,o.stateNode=s);break;case 13:case 14:case 16:case 9:case 10:case 15:break;case 6:wn(),fr(t);break;case 12:Tn(t);break;case 11:break;case 4:m(!1,"An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue.");default:m(!1,"Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.")}if(t=Rr=null,a=e,1073741823===Nr||1073741823!==a.childExpirationTime){for(o=0,s=a.child;null!==s;)i=s.expirationTime,d=s.childExpirationTime,(0===o||0!==i&&i<o)&&(o=i),(0===o||0!==d&&d<o)&&(o=d),s=s.sibling;a.childExpirationTime=o}if(null!==t)return t;null!==n&&0==(512&n.effectTag)&&(null===n.firstEffect&&(n.firstEffect=e.firstEffect),null!==e.lastEffect&&(null!==n.lastEffect&&(n.lastEffect.nextEffect=e.firstEffect),n.lastEffect=e.lastEffect),1<e.effectTag&&(null!==n.lastEffect?n.lastEffect.nextEffect=e:n.firstEffect=e,n.lastEffect=e))}else{if(null!==(e=kr(e)))return e.effectTag&=511,e;null!==n&&(n.firstEffect=n.lastEffect=null,n.effectTag|=512)}if(null!==r)return r;if(null===n)break;e=n}return null}function Dr(e){var t=cr(e.alternate,e,Nr);return null===t&&(t=Wr(e)),_r.current=null,t}function Or(e,t,n){m(!Cr,"renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."),Cr=!0,_r.currentDispatcher=Er;var r=e.nextExpirationTimeToWorkOn;r===Nr&&e===wr&&null!==Rr||(Mr(),Nr=r,Rr=$t((wr=e).current,null,Nr),e.pendingCommitExpirationTime=0);for(var i=!1;;){try{if(t)for(;null!==Rr&&!bi();)Rr=Dr(Rr);else for(;null!==Rr;)Rr=Dr(Rr)}catch(e){if(null===Rr)i=!0,Ti(e);else{m(null!==Rr,"Failed to replay rendering after an error. This is likely caused by a bug in React. Please file an issue with a reproducing case to help us find it.");var a=Rr,o=a.return;if(null!==o){e:{var l=o,u=a,s=e;o=Nr,u.effectTag|=512,u.firstEffect=u.lastEffect=null,Ur=!0,s=hn(s,u);do{switch(l.tag){case 5:l.effectTag|=1024,l.expirationTime=o,un(l,o=Sr(l,s,o));break e;case 2:case 3:u=s;var c=l.stateNode;if(0==(64&l.effectTag)&&null!==c&&"function"==typeof c.componentDidCatch&&(null===zr||!zr.has(c))){l.effectTag|=1024,l.expirationTime=o,un(l,o=Pr(l,u,o));break e}}l=l.return}while(null!==l)}Rr=Wr(a);continue}i=!0,Ti(e)}}break}if(Cr=!1,vn=yn=gn=_r.currentDispatcher=null,i)wr=null,e.finishedWork=null;else if(null!==Rr)e.finishedWork=null;else{if(m(null!==(t=e.current.alternate),"Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."),wr=null,Ur){if(i=e.latestPendingTime,a=e.latestSuspendedTime,o=e.latestPingedTime,0!==i&&i>r||0!==a&&a>r||0!==o&&o>r)return e.didError=!1,0!==(n=e.latestPingedTime)&&n<=r&&(e.latestPingedTime=0),n=e.earliestPendingTime,t=e.latestPendingTime,n===r?e.earliestPendingTime=t===r?e.latestPendingTime=0:t:t===r&&(e.latestPendingTime=n),n=e.earliestSuspendedTime,t=e.latestSuspendedTime,0===n?e.earliestSuspendedTime=e.latestSuspendedTime=r:n>r?e.earliestSuspendedTime=r:t<r&&(e.latestSuspendedTime=r),en(r,e),void(e.expirationTime=e.expirationTime);if(!e.didError&&!n)return e.didError=!0,e.nextExpirationTimeToWorkOn=r,void(e.expirationTime=1)}e.pendingCommitExpirationTime=r,e.finishedWork=t}}function jr(e,t){var n;e:{for(m(!Cr||Ar,"dispatch: Cannot dispatch during the render phase."),n=e.return;null!==n;){switch(n.tag){case 2:case 3:var r=n.stateNode;if("function"==typeof n.type.getDerivedStateFromCatch||"function"==typeof r.componentDidCatch&&(null===zr||!zr.has(r))){ln(n,e=Pr(n,e=hn(t,e),1)),Hr(n,1),n=void 0;break e}break;case 5:ln(n,e=Sr(n,e=hn(t,e),1)),Hr(n,1),n=void 0;break e}n=n.return}5===e.tag&&(ln(e,n=Sr(e,n=hn(t,e),1)),Hr(e,1)),n=void 0}return n}function Fr(e,t){return Cr?e=Ar?1:Nr:1&t.mode?(e=ni?2+10*(1+((e-2+15)/10|0)):2+25*(1+((e-2+500)/25|0)),null!==wr&&e===Nr&&(e+=1)):e=1,ni&&(0===Gr||e>Gr)&&(Gr=e),e}function Hr(e,t){e:{(0===e.expirationTime||e.expirationTime>t)&&(e.expirationTime=t);var n=e.alternate;null!==n&&(0===n.expirationTime||n.expirationTime>t)&&(n.expirationTime=t);var r=e.return;if(null===r&&5===e.tag)e=e.stateNode;else{for(;null!==r;){if(n=r.alternate,(0===r.childExpirationTime||r.childExpirationTime>t)&&(r.childExpirationTime=t),null!==n&&(0===n.childExpirationTime||n.childExpirationTime>t)&&(n.childExpirationTime=t),null===r.return&&5===r.tag){e=r.stateNode;break e}r=r.return}e=null}}null!==e&&(!Cr&&0!==Nr&&t<Nr&&Mr(),Zt(e,t),Cr&&!Ar&&wr===e||(t=e,e=e.expirationTime,null===t.nextScheduledRoot?(t.expirationTime=e,null===Lr?(Br=Lr=t,t.nextScheduledRoot=t):(Lr=Lr.nextScheduledRoot=t).nextScheduledRoot=Br):(0===(n=t.expirationTime)||e<n)&&(t.expirationTime=e),Yr||(ei?ti&&(Xr=t,$r=1,yi(t,1,!0)):1===e?gi(1,null):di(t,e))),ui>li&&(ui=0,m(!1,"Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops.")))}var Br=null,Lr=null,Vr=0,Qr=void 0,Yr=!1,Xr=null,$r=0,Gr=0,qr=!1,Jr=!1,Kr=null,Zr=null,ei=!1,ti=!1,ni=!1,ri=null,ii=pt(),ai=2+(ii/10|0),oi=ai,li=50,ui=0,si=null,ci=1;function fi(){ai=2+((pt()-ii)/10|0)}function di(e,t){if(0!==Vr){if(t>Vr)return;null!==Qr&&(ht=null,clearTimeout(Qr))}Vr=t,pt(),ht=mi,Qr=setTimeout(yt,1)}function pi(){return Yr?oi:(hi(),0!==$r&&1073741823!==$r||(fi(),oi=ai),oi)}function hi(){var e=0,t=null;if(null!==Lr)for(var n=Lr,r=Br;null!==r;){var i=r.expirationTime;if(0===i){if(m(null!==n&&null!==Lr,"Should have a previous and last root. This error is likely caused by a bug in React. Please file an issue."),r===r.nextScheduledRoot){Br=Lr=r.nextScheduledRoot=null;break}if(r===Br)Br=i=r.nextScheduledRoot,Lr.nextScheduledRoot=i,r.nextScheduledRoot=null;else{if(r===Lr){(Lr=n).nextScheduledRoot=Br,r.nextScheduledRoot=null;break}n.nextScheduledRoot=r.nextScheduledRoot,r.nextScheduledRoot=null}r=n.nextScheduledRoot}else{if((0===e||i<e)&&(e=i,t=r),r===Lr)break;if(1===e)break;n=r,r=r.nextScheduledRoot}}Xr=t,$r=e}function mi(e){if(e.didTimeout&&null!==Br){fi();var t=Br;do{var n=t.expirationTime;0!==n&&ai>=n&&(t.nextExpirationTimeToWorkOn=ai),t=t.nextScheduledRoot}while(t!==Br)}gi(0,e)}function gi(e,t){if(Zr=t,hi(),null!==Zr)for(fi(),oi=ai;null!==Xr&&0!==$r&&(0===e||e>=$r)&&(!qr||ai>=$r);)yi(Xr,$r,ai>=$r),hi(),fi(),oi=ai;else for(;null!==Xr&&0!==$r&&(0===e||e>=$r);)yi(Xr,$r,!0),hi();if(null!==Zr&&(Vr=0,Qr=null),0!==$r&&di(0,$r),Zr=null,qr=!1,ui=0,si=null,null!==ri)for(e=ri,ri=null,t=0;t<e.length;t++){var n=e[t];try{n._onComplete()}catch(e){Jr||(Jr=!0,Kr=e)}}if(Jr)throw e=Kr,Kr=null,Jr=!1,e}function yi(e,t,n){if(m(!Yr,"performWorkOnRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."),Yr=!0,null===Zr||n){var r=e.finishedWork;null!==r?vi(e,r,t):(e.finishedWork=null,Or(e,!1,n),null!==(r=e.finishedWork)&&vi(e,r,t))}else null!==(r=e.finishedWork)?vi(e,r,t):(e.finishedWork=null,Or(e,!0,n),null!==(r=e.finishedWork)&&(bi()?e.finishedWork=r:vi(e,r,t)));Yr=!1}function vi(e,t,n){var r=e.firstBatch;if(null!==r&&r._expirationTime<=n&&(null===ri?ri=[r]:ri.push(r),r._defer))return e.finishedWork=t,void(e.expirationTime=0);e.finishedWork=null,e===si?ui++:(si=e,ui=0),Ar=Cr=!0,m(e.current!==t,"Cannot commit the same tree as before. This is probably a bug related to the return field. This error is likely caused by a bug in React. Please file an issue."),m(0!==(n=e.pendingCommitExpirationTime),"Cannot commit an incomplete root. This error is likely caused by a bug in React. Please file an issue."),e.pendingCommitExpirationTime=0,r=t.expirationTime;var i=t.childExpirationTime;for(r=0===r||0!==i&&i<r?i:r,e.didError=!1,0===r?(e.earliestPendingTime=0,e.latestPendingTime=0,e.earliestSuspendedTime=0,e.latestSuspendedTime=0,e.latestPingedTime=0):(0!==(i=e.latestPendingTime)&&(i<r?e.earliestPendingTime=e.latestPendingTime=0:e.earliestPendingTime<r&&(e.earliestPendingTime=e.latestPendingTime)),0===(i=e.earliestSuspendedTime)?Zt(e,r):r>e.latestSuspendedTime?(e.earliestSuspendedTime=0,e.latestSuspendedTime=0,e.latestPingedTime=0,Zt(e,r)):r<i&&Zt(e,r)),en(0,e),_r.current=null,1<t.effectTag?null!==t.lastEffect?(t.lastEffect.nextEffect=t,r=t.firstEffect):r=t:r=t.firstEffect,Ir=r;null!==Ir;){i=!1;var a=void 0;try{for(;null!==Ir;){if(256&Ir.effectTag){var o=Ir.alternate;e:{var l=Ir;switch(l.tag){case 2:case 3:if(256&l.effectTag&&null!==o){var u=o.memoizedProps,s=o.memoizedState,c=l.stateNode;c.props=l.memoizedProps,c.state=l.memoizedState;var f=c.getSnapshotBeforeUpdate(u,s);c.__reactInternalSnapshotBeforeUpdate=f}break e;case 5:case 7:case 8:case 6:break e;default:m(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.")}}}Ir=Ir.nextEffect}}catch(e){i=!0,a=e}i&&(m(null!==Ir,"Should have next effect. This error is likely caused by a bug in React. Please file an issue."),jr(Ir,a),null!==Ir&&(Ir=Ir.nextEffect))}for(Ir=r;null!==Ir;){o=!1,u=void 0;try{for(;null!==Ir;){var d=Ir.effectTag;if(128&d){var p=Ir.alternate;if(null!==p){var h=p.ref;null!==h&&("function"==typeof h?h(null):h.current=null)}}switch(14&d){case 2:br(Ir),Ir.effectTag&=-3;break;case 6:br(Ir),Ir.effectTag&=-3,xr(Ir.alternate,Ir);break;case 4:xr(Ir.alternate,Ir);break;case 8:Tr(s=Ir),s.return=null,s.child=null,s.alternate&&(s.alternate.child=null,s.alternate.return=null)}Ir=Ir.nextEffect}}catch(e){o=!0,u=e}o&&(m(null!==Ir,"Should have next effect. This error is likely caused by a bug in React. Please file an issue."),jr(Ir,u),null!==Ir&&(Ir=Ir.nextEffect))}for(e.current=t,Ir=r;null!==Ir;){d=!1,p=void 0;try{for(h=n;null!==Ir;){var g=Ir.effectTag;if(36&g){var y=Ir.alternate;switch(u=h,(o=Ir).tag){case 2:case 3:var v=o.stateNode;if(4&o.effectTag)if(null===y)v.props=o.memoizedProps,v.state=o.memoizedState,v.componentDidMount();else{var b=y.memoizedProps,T=y.memoizedState;v.props=o.memoizedProps,v.state=o.memoizedState,v.componentDidUpdate(b,T,v.__reactInternalSnapshotBeforeUpdate)}var x=o.updateQueue;null!==x&&(v.props=o.memoizedProps,v.state=o.memoizedState,dn(0,x,v));break;case 5:var S=o.updateQueue;if(null!==S){if(s=null,null!==o.child)switch(o.child.tag){case 7:s=o.child.stateNode;break;case 2:case 3:s=o.child.stateNode}dn(0,S,s)}break;case 7:case 8:case 6:case 15:case 16:break;default:m(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. 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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]);var f=n.create({container:{alignItems:'center',justifyContent:'center',backgroundColor:'rgba(0,0,0, 0.25)',position:'absolute',top:0,right:0,padding:2},text:{fontSize:6,color:'#ffffff'}});m.exports=function(){return t.createElement(c,{style:f.container},t.createElement(o,{style:f.text},"FABRIC"))}},132,[97,98,133,119]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t={};t.UIView={pointerEvents:!0,accessible:!0,accessibilityActions:!0,accessibilityLabel:!0,accessibilityHint:!0,accessibilityComponentType:!0,accessibilityLiveRegion:!0,accessibilityRole:!0,accessibilityStates:!0,accessibilityTraits:!0,acceptsKeyboardFocus:!0,enableFocusRing:!0,importantForAccessibility:!0,nativeID:!0,testID:!0,renderToHardwareTextureAndroid:!0,shouldRasterizeIOS:!0,onLayout:!0,onAccessibilityAction:!0,onAccessibilityTap:!0,onMagicTap:!0,collapsable:!0,needsOffscreenAlphaCompositing:!0,onMouseEnter:!0,onMouseLeave:!0,onDragEnter:!0,onDragLeave:!0,onDrop:!0,draggedTypes:!0,style:s},t.RCTView=babelHelpers.objectSpread({},t.UIView,{removeClippedSubviews:!0}),m.exports=t},134,[102]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),t=r(d[2]),s=r(d[3])(r(d[4]));m.exports={ellipsizeMode:t.oneOf(['head','middle','tail','clip']),numberOfLines:t.number,textBreakStrategy:t.oneOf(['simple','highQuality','balanced']),onLayout:t.func,onPress:t.func,onLongPress:t.func,pressRetentionOffset:n,selectable:t.bool,selectionColor:o,suppressHighlighting:t.bool,style:s,testID:t.string,nativeID:t.string,allowFontScaling:t.bool,accessible:t.bool,adjustsFontSizeToFit:t.bool,minimumFontScale:t.number,disabled:t.bool}},135,[104,136,94,137,112]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=t.shape({top:t.number,left:t.number,bottom:t.number,right:t.number});m.exports=n},136,[94]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]);m.exports=function(o){var c=n(o);return function(n,o,u,v){var f=n;n[o]&&((f={})[o]=t(n[o]));for(var p=arguments.length,s=new Array(p>4?p-4:0),l=4;l<p;l++)s[l-4]=arguments[l];return c.apply(void 0,[f,o,u,v].concat(s))}}},137,[138,89]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]);m.exports=function(o){function l(l,c,s,u,p){if(c[s]){var f=c[s],y=typeof f;'object'!==y&&n(!1,"Invalid "+(p||'(unknown)')+" `"+s+"` of type `"+y+"` supplied to `"+u+"`, expected `object`.");for(var v=t(c[s],o),b=arguments.length,j=new Array(b>5?b-5:0),k=5;k<b;k++)j[k-5]=arguments[k];for(var w in v){var O=o[w];O||n(!1,"Invalid props."+s+" key `"+w+"` supplied to `"+u+"`.\nBad object: "+JSON.stringify(c[s],null,'  ')+'\nValid keys: '+JSON.stringify(Object.keys(o),null,'  '));var J=O.apply(void 0,[f,w,u,p].concat(j));J&&n(!1,J.message+'\nBad object: '+JSON.stringify(c[s],null,'  '))}}else l&&n(!1,"Required object `"+s+"` was not specified in `"+u+"`.")}function c(n,t,o,c){for(var s=arguments.length,u=new Array(s>4?s-4:0),p=4;p<s;p++)u[p-4]=arguments[p];return l.apply(void 0,[!1,n,t,o,c].concat(u))}return c.isRequired=l.bind(null,!0),c}},138,[6,139]);
-__d(function(g,r,i,a,m,e,d){"use strict";var t=r(d[0]);m.exports=function(n,u){var c={};return t(c,n),t(c,u),c}},139,[140]);
-__d(function(g,r,i,a,m,e,d){"use strict";var c=r(d[0]),t=c.checkMergeObjectArg,n=c.checkMergeIntoObjectArg;m.exports=function(c,o){if(n(c),null!=o)for(var f in t(o),o)o.hasOwnProperty(f)&&(c[f]=o[f])}},140,[141]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=function(t){return'object'!=typeof t||t instanceof Date||null===t},c={MAX_MERGE_DEPTH:36,isTerminal:n,normalizeMergeArg:function(t){return void 0===t||null===t?{}:t},checkMergeArrayArgs:function(n,c){t(Array.isArray(n)&&Array.isArray(c),'Tried to merge arrays, instead got %s and %s.',n,c)},checkMergeObjectArgs:function(t,n){c.checkMergeObjectArg(t),c.checkMergeObjectArg(n)},checkMergeObjectArg:function(c){t(!n(c)&&!Array.isArray(c),'Tried to merge an object, instead got %s.',c)},checkMergeIntoObjectArg:function(c){t(!(n(c)&&'function'!=typeof c||Array.isArray(c)),'Tried to merge into an object, instead got %s.',c)},checkMergeLevel:function(n){t(n<36,"Maximum deep merge depth exceeded. You may be attempting to merge circular structures in an unsupported way.")},checkArrayStrategy:function(n){t(void 0===n||n in c.ArrayStrategies,"You must provide an array strategy to deep merge functions to instruct the deep merge how to resolve merging two arrays.")},ArrayStrategies:{Clobber:'Clobber',Concat:'Concat',IndexByIndex:'IndexByIndex'}};m.exports=c},141,[6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var E=r(d[0]),t=r(d[1]),R=r(d[2]),s=(r(d[3]),r(d[4])),_=r(d[5]),o=r(d[6]),S=r(d[7]),n=(r(d[8]),r(d[9])),l=(r(d[10]),n({NOT_RESPONDER:null,RESPONDER_INACTIVE_PRESS_IN:null,RESPONDER_INACTIVE_PRESS_OUT:null,RESPONDER_ACTIVE_PRESS_IN:null,RESPONDER_ACTIVE_PRESS_OUT:null,RESPONDER_ACTIVE_LONG_PRESS_IN:null,RESPONDER_ACTIVE_LONG_PRESS_OUT:null,ERROR:null})),h={RESPONDER_ACTIVE_PRESS_OUT:!0,RESPONDER_ACTIVE_PRESS_IN:!0},T={RESPONDER_INACTIVE_PRESS_IN:!0,RESPONDER_ACTIVE_PRESS_IN:!0,RESPONDER_ACTIVE_LONG_PRESS_IN:!0},N={RESPONDER_ACTIVE_LONG_PRESS_IN:!0},u=n({DELAY:null,RESPONDER_GRANT:null,RESPONDER_RELEASE:null,RESPONDER_TERMINATED:null,ENTER_PRESS_RECT:null,LEAVE_PRESS_RECT:null,LONG_PRESS_DETECTED:null}),P={NOT_RESPONDER:{DELAY:l.ERROR,RESPONDER_GRANT:l.RESPONDER_INACTIVE_PRESS_IN,RESPONDER_RELEASE:l.ERROR,RESPONDER_TERMINATED:l.ERROR,ENTER_PRESS_RECT:l.ERROR,LEAVE_PRESS_RECT:l.ERROR,LONG_PRESS_DETECTED:l.ERROR},RESPONDER_INACTIVE_PRESS_IN:{DELAY:l.RESPONDER_ACTIVE_PRESS_IN,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_INACTIVE_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_INACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:l.ERROR},RESPONDER_INACTIVE_PRESS_OUT:{DELAY:l.RESPONDER_ACTIVE_PRESS_OUT,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_INACTIVE_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_INACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:l.ERROR},RESPONDER_ACTIVE_PRESS_IN:{DELAY:l.ERROR,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_ACTIVE_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_ACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:l.RESPONDER_ACTIVE_LONG_PRESS_IN},RESPONDER_ACTIVE_PRESS_OUT:{DELAY:l.ERROR,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_ACTIVE_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_ACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:l.ERROR},RESPONDER_ACTIVE_LONG_PRESS_IN:{DELAY:l.ERROR,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_ACTIVE_LONG_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_ACTIVE_LONG_PRESS_OUT,LONG_PRESS_DETECTED:l.RESPONDER_ACTIVE_LONG_PRESS_IN},RESPONDER_ACTIVE_LONG_PRESS_OUT:{DELAY:l.ERROR,RESPONDER_GRANT:l.ERROR,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.RESPONDER_ACTIVE_LONG_PRESS_IN,LEAVE_PRESS_RECT:l.RESPONDER_ACTIVE_LONG_PRESS_OUT,LONG_PRESS_DETECTED:l.ERROR},error:{DELAY:l.NOT_RESPONDER,RESPONDER_GRANT:l.RESPONDER_INACTIVE_PRESS_IN,RESPONDER_RELEASE:l.NOT_RESPONDER,RESPONDER_TERMINATED:l.NOT_RESPONDER,ENTER_PRESS_RECT:l.NOT_RESPONDER,LEAVE_PRESS_RECT:l.NOT_RESPONDER,LONG_PRESS_DETECTED:l.NOT_RESPONDER}},O={Mixin:{componentDidMount:function(){t.isTV&&(this._tvEventHandler=new _,this._tvEventHandler.enable(this,function(E,t){var R=s.findNodeHandle(E);t.dispatchConfig={},R===t.tag&&('focus'===t.eventType?E.touchableHandleFocus(t):'blur'===t.eventType?E.touchableHandleBlur(t):'select'===t.eventType&&E.touchableHandlePress&&!E.props.disabled&&E.touchableHandlePress(t))}))},componentWillUnmount:function(){this._tvEventHandler&&(this._tvEventHandler.disable(),delete this._tvEventHandler),this.touchableDelayTimeout&&clearTimeout(this.touchableDelayTimeout),this.longPressDelayTimeout&&clearTimeout(this.longPressDelayTimeout),this.pressOutDelayTimeout&&clearTimeout(this.pressOutDelayTimeout)},touchableGetInitialState:function(){return{touchable:{touchState:void 0,responderID:null}}},touchableHandleResponderTerminationRequest:function(){return!this.props.rejectResponderTermination},touchableHandleStartShouldSetResponder:function(){return!this.props.disabled},touchableLongPressCancelsPress:function(){return!0},touchableHandleResponderGrant:function(E){var t=E.currentTarget;E.persist(),this.pressOutDelayTimeout&&clearTimeout(this.pressOutDelayTimeout),this.pressOutDelayTimeout=null,this.state.touchable.touchState=l.NOT_RESPONDER,this.state.touchable.responderID=t,this._receiveSignal(u.RESPONDER_GRANT,E);var R=void 0!==this.touchableGetHighlightDelayMS?Math.max(this.touchableGetHighlightDelayMS(),0):130;0!==(R=isNaN(R)?130:R)?this.touchableDelayTimeout=setTimeout(this._handleDelay.bind(this,E),R):this._handleDelay(E);var s=void 0!==this.touchableGetLongPressDelayMS?Math.max(this.touchableGetLongPressDelayMS(),10):370;s=isNaN(s)?370:s,this.longPressDelayTimeout=setTimeout(this._handleLongDelay.bind(this,E),s+R)},touchableHandleResponderRelease:function(E){this._receiveSignal(u.RESPONDER_RELEASE,E)},touchableHandleResponderTerminate:function(E){this._receiveSignal(u.RESPONDER_TERMINATED,E)},touchableHandleResponderMove:function(E){if(this.state.touchable.touchState!==l.RESPONDER_INACTIVE_PRESS_IN&&this.state.touchable.positionOnActivate){var t=this.state.touchable.positionOnActivate,R=this.state.touchable.dimensionsOnActivate,s=this.touchableGetPressRectOffset?this.touchableGetPressRectOffset():{left:20,right:20,top:20,bottom:20},_=s.left,S=s.top,n=s.right,h=s.bottom,T=this.touchableGetHitSlop?this.touchableGetHitSlop():null;T&&(_+=T.left,S+=T.top,n+=T.right,h+=T.bottom);var N=o.extractSingleTouch(E.nativeEvent),P=N&&N.pageX,O=N&&N.pageY;if(this.pressInLocation)this._getDistanceBetweenPoints(P,O,this.pressInLocation.pageX,this.pressInLocation.pageY)>10&&this._cancelLongPressDelayTimeout();if(P>t.left-_&&O>t.top-S&&P<t.left+R.width+n&&O<t.top+R.height+h)this._receiveSignal(u.ENTER_PRESS_RECT,E),this.state.touchable.touchState===l.RESPONDER_INACTIVE_PRESS_IN&&this._cancelLongPressDelayTimeout();else this._cancelLongPressDelayTimeout(),this._receiveSignal(u.LEAVE_PRESS_RECT,E)}},touchableHandleFocus:function(E){this.props.onFocus&&this.props.onFocus(E)},touchableHandleBlur:function(E){this.props.onBlur&&this.props.onBlur(E)},_remeasureMetricsOnActivation:function(){var E=this.state.touchable.responderID;null!=E&&S.measure(E,this._handleQueryLayout)},_handleQueryLayout:function(t,s,_,o,S,n){(t||s||_||o||S||n)&&(this.state.touchable.positionOnActivate&&R.release(this.state.touchable.positionOnActivate),this.state.touchable.dimensionsOnActivate&&E.release(this.state.touchable.dimensionsOnActivate),this.state.touchable.positionOnActivate=R.getPooled(S,n),this.state.touchable.dimensionsOnActivate=E.getPooled(_,o))},_handleDelay:function(E){this.touchableDelayTimeout=null,this._receiveSignal(u.DELAY,E)},_handleLongDelay:function(E){this.longPressDelayTimeout=null;var t=this.state.touchable.touchState;t!==l.RESPONDER_ACTIVE_PRESS_IN&&t!==l.RESPONDER_ACTIVE_LONG_PRESS_IN?console.error('Attempted to transition from state `'+t+'` to `'+l.RESPONDER_ACTIVE_LONG_PRESS_IN+"`, which is not supported. This is most likely due to `Touchable.longPressDelayTimeout` not being cancelled."):this._receiveSignal(u.LONG_PRESS_DETECTED,E)},_receiveSignal:function(E,t){var R=this.state.touchable.responderID,s=this.state.touchable.touchState,_=P[s]&&P[s][E];if(R||E!==u.RESPONDER_RELEASE){if(!_)throw new Error('Unrecognized signal `'+E+'` or state `'+s+'` for Touchable responder `'+R+'`');if(_===l.ERROR)throw new Error('Touchable cannot transition from `'+s+'` to `'+E+'` for responder `'+R+'`');s!==_&&(this._performSideEffectsForTransition(s,_,E,t),this.state.touchable.touchState=_)}},_cancelLongPressDelayTimeout:function(){this.longPressDelayTimeout&&clearTimeout(this.longPressDelayTimeout),this.longPressDelayTimeout=null},_isHighlight:function(E){return E===l.RESPONDER_ACTIVE_PRESS_IN||E===l.RESPONDER_ACTIVE_LONG_PRESS_IN},_savePressInLocation:function(E){var t=o.extractSingleTouch(E.nativeEvent),R=t&&t.pageX,s=t&&t.pageY,_=t&&t.locationX,S=t&&t.locationY;this.pressInLocation={pageX:R,pageY:s,locationX:_,locationY:S}},_getDistanceBetweenPoints:function(E,t,R,s){var _=E-R,o=t-s;return Math.sqrt(_*_+o*o)},_performSideEffectsForTransition:function(E,t,R,s){var _=this._isHighlight(E),o=this._isHighlight(t);if((R===u.RESPONDER_TERMINATED||R===u.RESPONDER_RELEASE)&&this._cancelLongPressDelayTimeout(),!h[E]&&h[t]&&this._remeasureMetricsOnActivation(),T[E]&&R===u.LONG_PRESS_DETECTED&&this.touchableHandleLongPress&&this.touchableHandleLongPress(s),o&&!_?this._startHighlight(s):!o&&_&&this._endHighlight(s),T[E]&&R===u.RESPONDER_RELEASE){var S=!!this.props.onLongPress,n=N[E]&&(!S||!this.touchableLongPressCancelsPress());(!N[E]||n)&&this.touchableHandlePress&&(o||_||(this._startHighlight(s),this._endHighlight(s)),this._playTouchSound(),this.touchableHandlePress(s))}this.touchableDelayTimeout&&clearTimeout(this.touchableDelayTimeout),this.touchableDelayTimeout=null},_playTouchSound:function(){S.playTouchSound()},_startHighlight:function(E){this._savePressInLocation(E),this.touchableHandleActivePressIn&&this.touchableHandleActivePressIn(E)},_endHighlight:function(E){var t=this;this.touchableHandleActivePressOut&&(this.touchableGetPressOutDelayMS&&this.touchableGetPressOutDelayMS()?this.pressOutDelayTimeout=setTimeout(function(){t.touchableHandleActivePressOut(E)},this.touchableGetPressOutDelayMS()):this.touchableHandleActivePressOut(E))}},TOUCH_TARGET_DEBUG:!1,renderDebugView:function(E){E.color,E.hitSlop;if(!O.TOUCH_TARGET_DEBUG)return null;throw Error('Touchable.TOUCH_TARGET_DEBUG should not be enabled in prod!')}};m.exports=O},142,[143,43,145,97,25,146,147,83,119,107,105]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=t.twoArgumentPooler;function n(t,o){this.width=t,this.height=o}n.prototype.destructor=function(){this.width=null,this.height=null},n.getPooledFromElement=function(t){return n.getPooled(t.offsetWidth,t.offsetHeight)},t.addPoolingTo(n,o),m.exports=n},143,[144]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=function(t){if(this.instancePool.length){var n=this.instancePool.pop();return this.call(n,t),n}return new this(t)},o=function(n){t(n instanceof this,'Trying to release an instance into a pool of a different type.'),n.destructor(),this.instancePool.length<this.poolSize&&this.instancePool.push(n)},s=n,l={addPoolingTo:function(t,n){var l=t;return l.instancePool=[],l.getPooled=n||s,l.poolSize||(l.poolSize=10),l.release=o,l},oneArgumentPooler:n,twoArgumentPooler:function(t,n){if(this.instancePool.length){var o=this.instancePool.pop();return this.call(o,t,n),o}return new this(t,n)},threeArgumentPooler:function(t,n,o){if(this.instancePool.length){var s=this.instancePool.pop();return this.call(s,t,n,o),s}return new this(t,n,o)},fourArgumentPooler:function(t,n,o,s){if(this.instancePool.length){var l=this.instancePool.pop();return this.call(l,t,n,o,s),l}return new this(t,n,o,s)}};m.exports=l},144,[6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=t.twoArgumentPooler;function n(t,o){this.left=t,this.top=o}n.prototype.destructor=function(){this.left=null,this.top=null},t.addPoolingTo(n,o),m.exports=n},145,[144]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]).TVNavigationEventEmitter,n=r(d[2]);function v(){this.__nativeTVNavigationEventListener=null,this.__nativeTVNavigationEventEmitter=null}v.prototype.enable=function(v,o){this.__nativeTVNavigationEventEmitter=new n(t),this.__nativeTVNavigationEventListener=this.__nativeTVNavigationEventEmitter.addListener('onHWKeyEvent',function(t){o&&o(v,t)})},v.prototype.disable=function(){this.__nativeTVNavigationEventListener&&(this.__nativeTVNavigationEventListener.remove(),delete this.__nativeTVNavigationEventListener),this.__nativeTVNavigationEventEmitter&&delete this.__nativeTVNavigationEventEmitter},m.exports=v},146,[43,23,55]);
-__d(function(g,r,i,a,m,e,d){"use strict";m.exports={extractSingleTouch:function(t){var n=t.touches,c=t.changedTouches,u=n&&n.length>0,h=c&&c.length>0;return!u&&h?c[0]:u?n[0]:t}}},147,[]);
-__d(function(g,r,i,a,m,e,d){"use strict";m.exports=function(n){if(null!=n)return n;throw new Error("Got unexpected null or undefined")}},148,[]);
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Please file an issue."),i=null!==(i=t.memoizedState)?i.element:null,rn(t,r,t.pendingProps,null,n),(r=t.memoizedState.element)===i?t=nr(e,t,n):(Xn(e,t,r,n),t=t.child),t;case 7:return Pn(t),null===e&&Yn(t),i=(r=t.pendingProps).children,Gn(e,t),Xn(e,t,i,n),t.memoizedProps=r,t=t.child;case 8:return null===e&&Yn(t),t.memoizedProps=t.pendingProps,null;case 16:return null;case 6:return xn(t,t.stateNode.containerInfo),r=t.pendingProps,null===e?t.child=On(t,null,r,n):Xn(e,t,r,n),t.memoizedProps=r,t.child;case 13:return $n(e,t,t.type,t.pendingProps,n);case 14:return e=$n(e,t,i=t.type._reactResult,er(i,r=t.pendingProps),n),t.memoizedProps=r,e;case 9:return Xn(e,t,r=t.pendingProps,n),t.memoizedProps=r,t.child;case 10:return Xn(e,t,r=t.pendingProps.children,n),t.memoizedProps=r,t.child;case 15:return Xn(e,t,(r=t.pendingProps).children,n),t.memoizedProps=r,t.child;case 12:e:{r=t.type._context,i=t.pendingProps;var o=t.memoizedProps,a=i.value;if(t.memoizedProps=i,dn(t,a),null!==o){var l=o.value;if(0===(a=l===a&&(0!==l||1/l==1/a)||l!=l&&a!=a?0:0|("function"==typeof r._calculateChangedBits?r._calculateChangedBits(l,a):1073741823))){if(o.children===i.children&&!Et.current){t=nr(e,t,n);break e}}else for(null!==(o=t.child)&&(o.return=t);null!==o;){if(null!==(l=o.firstContextDependency))do{if(l.context===r&&0!=(l.observedBits&a)){if(2===o.tag||3===o.tag){var u=Jt(n);u.tag=2,Zt(o,u)}(0===o.expirationTime||o.expirationTime>n)&&(o.expirationTime=n),null!==(u=o.alternate)&&(0===u.expirationTime||u.expirationTime>n)&&(u.expirationTime=n);for(var s=o.return;null!==s;){if(u=s.alternate,0===s.childExpirationTime||s.childExpirationTime>n)s.childExpirationTime=n,null!==u&&(0===u.childExpirationTime||u.childExpirationTime>n)&&(u.childExpirationTime=n);else{if(null===u||!(0===u.childExpirationTime||u.childExpirationTime>n))break;u.childExpirationTime=n}s=s.return}}u=o.child,l=l.next}while(null!==l);else u=12===o.tag&&o.type===t.type?null:o.child;if(null!==u)u.return=o;else for(u=o;null!==u;){if(u===t){u=null;break}if(null!==(o=u.sibling)){o.return=u.return,u=o;break}u=u.return}o=u}}Xn(e,t,i.children,n),t=t.child}return t;case 11:return a=t.type,i=(r=t.pendingProps).children,hn(t),i=i(a=mn(a,r.unstable_observedBits)),t.effectTag|=1,Xn(e,t,i,n),t.memoizedProps=r,t.child;default:m(!1,"Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.")}}function ir(e,t){for(var n=t.child;null!==n;){if(7===n.tag||8===n.tag)p.appendChild(e.node,n.stateNode.node);else if(6!==n.tag&&null!==n.child){n.child.return=n,n=n.child;continue}if(n===t)break;for(;null===n.sibling;){if(null===n.return||n.return===t)return;n=n.return}n.sibling.return=n.return,n=n.sibling}}var or=void 0,ar=void 0,lr=void 0;function ur(e){var t=e.componentStack,n=e.error;if(n instanceof Error){e=n.message;var r=n.name;try{n.message=(e?r+": "+e:r)+"\n\nThis error is located at:"+t}catch(e){}}else n="string"==typeof n?Error(n+"\n\nThis error is located at:"+t):Error("Unspecified error at:"+t);h.handleException(n,!1)}function sr(e,t){var n=t.source,r=t.stack;null===r&&null!==n&&(r=vt(n)),t={componentName:null!==n?He(n.type):null,componentStack:null!==r?r:"",error:t.value,errorBoundary:null,errorBoundaryName:null,errorBoundaryFound:!1,willRetry:!1},null!==e&&2===e.tag&&(t.errorBoundary=e.stateNode,t.errorBoundaryName=He(e.type),t.errorBoundaryFound=!0,t.willRetry=!0);try{ur(t)}catch(e){setTimeout(function(){throw e})}}function cr(e){var t=e.ref;if(null!==t)if("function"==typeof t)try{t(null)}catch(t){wr(e,t)}else t.current=null}function fr(e,t){switch(t.tag){case 2:case 3:case 7:case 8:break;case 5:case 6:break;default:m(!1,"This unit of work tag should not have side-effects. 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Please file an issue."),e.effectTag=-1025&t|64,e;case 7:return kn(e),null;case 16:return 1024&(t=e.effectTag)?(e.effectTag=-1025&t|64,e):null;case 6:return Sn(),null;case 12:return pn(e),null;default:return null}}or=function(e){var t=e.stateNode;if(null!==e.firstEffect){var n=t.containerInfo,r=p.createChildSet(n);e:for(var i=e.child;null!==i;){if(7===i.tag||8===i.tag)p.appendChildToSet(r,i.stateNode.node);else if(6!==i.tag&&null!==i.child){i.child.return=i,i=i.child;continue}if(i===e)break e;for(;null===i.sibling;){if(null===i.return||i.return===e)break e;i=i.return}i.sibling.return=i.return,i=i.sibling}t.pendingChildren=r,e.effectTag|=4,p.completeRoot(n,r)}},ar=function(e,t,n,r){n=e.stateNode;var i=e.memoizedProps;if((e=null===t.firstEffect)&&i===r)t.stateNode=n;else{var o=t.stateNode;Tn(yn.current);var a=null;i!==r&&(i=et(null,i,r,o.canonical.viewConfig.validAttributes),o.canonical.currentProps=r,a=i),e&&null===a?t.stateNode=n:(r=a,o=n.node,n={node:e?null!==r?p.cloneNodeWithNewProps(o,r):p.cloneNode(o):null!==r?p.cloneNodeWithNewChildrenAndProps(o,r):p.cloneNodeWithNewChildren(o),canonical:n.canonical},t.stateNode=n,e?t.effectTag|=4:ir(n,t))}},lr=function(e,t,n,r){n!==r&&(e=Tn(bn.current),n=Tn(yn.current),t.stateNode=gt(r,e,n,t),t.effectTag|=4)};var mr={readContext:mn},gr=Re.ReactCurrentOwner,yr=!1,vr=null,br=null,Tr=0,xr=!1,Sr=null,Pr=!1,kr=null;function Er(){if(null!==vr)for(var e=vr.return;null!==e;){var t=e;switch(t.tag){case 2:var n=t.type.childContextTypes;null!==n&&void 0!==n&&wt();break;case 3:null!==(n=t.type._reactResult.childContextTypes)&&void 0!==n&&wt();break;case 5:Sn(),Nt();break;case 7:kn(t);break;case 6:Sn();break;case 12:pn(t)}e=e.return}br=null,Tr=0,xr=!1,vr=null}function Cr(e){for(;;){var t=e.alternate,n=e.return,r=e.sibling;if(0==(512&e.effectTag)){var i=t,o=(t=e).pendingProps;switch(t.tag){case 0:case 1:break;case 2:_t(t.type)&&wt();break;case 3:_t(t.type._reactResult)&&wt();break;case 5:Sn(),Nt(),(o=t.stateNode).pendingContext&&(o.context=o.pendingContext,o.pendingContext=null),null!==i&&null!==i.child||(t.effectTag&=-3),or(t);break;case 7:kn(t);var a=Tn(bn.current),u=t.type;if(null!==i&&null!=t.stateNode)ar(i,t,u,o,a),i.ref!==t.ref&&(t.effectTag|=128);else if(o){var s=Tn(yn.current),c=t;i=ht,ht+=2;var f=l.get(u);m("RCTView"!==u||!s.isInAParentText,"Nesting of <View> within <Text> is not currently supported."),u=et(null,Xe,o,f.validAttributes),ir(o={node:a=p.createNode(i,f.uiViewClassName,a,u,c),canonical:o=new mt(i,f,o)},t),t.stateNode=o,null!==t.ref&&(t.effectTag|=128)}else m(null!==t.stateNode,"We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue.");break;case 8:i&&null!=t.stateNode?lr(i,t,i.memoizedProps,o):("string"!=typeof o&&m(null!==t.stateNode,"We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue."),a=Tn(bn.current),i=Tn(yn.current),t.stateNode=gt(o,a,i,t));break;case 13:case 14:case 16:case 9:case 10:case 15:break;case 6:Sn(),or(t);break;case 12:pn(t);break;case 11:break;case 4:m(!1,"An indeterminate component should have become determinate before completing. This error is likely caused by a bug in React. Please file an issue.");default:m(!1,"Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.")}if(t=vr=null,o=e,1073741823===Tr||1073741823!==o.childExpirationTime){for(a=0,i=o.child;null!==i;)f=i.expirationTime,u=i.childExpirationTime,(0===a||0!==f&&f<a)&&(a=f),(0===a||0!==u&&u<a)&&(a=u),i=i.sibling;o.childExpirationTime=a}if(null!==t)return t;null!==n&&0==(512&n.effectTag)&&(null===n.firstEffect&&(n.firstEffect=e.firstEffect),null!==e.lastEffect&&(null!==n.lastEffect&&(n.lastEffect.nextEffect=e.firstEffect),n.lastEffect=e.lastEffect),1<e.effectTag&&(null!==n.lastEffect?n.lastEffect.nextEffect=e:n.firstEffect=e,n.lastEffect=e))}else{if(null!==(e=hr(e)))return e.effectTag&=511,e;null!==n&&(n.firstEffect=n.lastEffect=null,n.effectTag|=512)}if(null!==r)return r;if(null===n)break;e=n}return null}function Rr(e){var t=rr(e.alternate,e,Tr);return null===t&&(t=Cr(e)),gr.current=null,t}function _r(e,t,n){m(!yr,"renderRoot was called recursively. This error is likely caused by a bug in React. Please file an issue."),yr=!0,gr.currentDispatcher=mr;var r=e.nextExpirationTimeToWorkOn;r===Tr&&e===br&&null!==vr||(Er(),Tr=r,vr=Ht((br=e).current,null,Tr),e.pendingCommitExpirationTime=0);for(var i=!1;;){try{if(t)for(;null!==vr&&!si();)vr=Rr(vr);else for(;null!==vr;)vr=Rr(vr)}catch(e){if(null===vr)i=!0,ci(e);else{m(null!==vr,"Failed to replay rendering after an error. This is likely caused by a bug in React. Please file an issue with a reproducing case to help us find it.");var o=vr,a=o.return;if(null!==a){e:{var l=a,u=o,s=e;a=Tr,u.effectTag|=512,u.firstEffect=u.lastEffect=null,xr=!0,s=ln(s,u);do{switch(l.tag){case 5:l.effectTag|=1024,l.expirationTime=a,en(l,a=dr(l,s,a));break e;case 2:case 3:u=s;var c=l.stateNode;if(0==(64&l.effectTag)&&null!==c&&"function"==typeof c.componentDidCatch&&(null===kr||!kr.has(c))){l.effectTag|=1024,l.expirationTime=a,en(l,a=pr(l,u,a));break e}}l=l.return}while(null!==l)}vr=Cr(o);continue}i=!0,ci(e)}}break}if(yr=!1,fn=cn=sn=gr.currentDispatcher=null,i)br=null,e.finishedWork=null;else if(null!==vr)e.finishedWork=null;else{if(m(null!==(t=e.current.alternate),"Finished root should have a work-in-progress. This error is likely caused by a bug in React. Please file an issue."),br=null,xr){if(i=e.latestPendingTime,o=e.latestSuspendedTime,a=e.latestPingedTime,0!==i&&i>r||0!==o&&o>r||0!==a&&a>r)return e.didError=!1,0!==(n=e.latestPingedTime)&&n<=r&&(e.latestPingedTime=0),n=e.earliestPendingTime,t=e.latestPendingTime,n===r?e.earliestPendingTime=t===r?e.latestPendingTime=0:t:t===r&&(e.latestPendingTime=n),n=e.earliestSuspendedTime,t=e.latestSuspendedTime,0===n?e.earliestSuspendedTime=e.latestSuspendedTime=r:n>r?e.earliestSuspendedTime=r:t<r&&(e.latestSuspendedTime=r),Xt(r,e),void(e.expirationTime=e.expirationTime);if(!e.didError&&!n)return e.didError=!0,e.nextExpirationTimeToWorkOn=r,void(e.expirationTime=1)}e.pendingCommitExpirationTime=r,e.finishedWork=t}}function wr(e,t){var n;e:{for(m(!yr||Pr,"dispatch: Cannot dispatch during the render phase."),n=e.return;null!==n;){switch(n.tag){case 2:case 3:var r=n.stateNode;if("function"==typeof n.type.getDerivedStateFromCatch||"function"==typeof r.componentDidCatch&&(null===kr||!kr.has(r))){Zt(n,e=pr(n,e=ln(t,e),1)),Ur(n,1),n=void 0;break e}break;case 5:Zt(n,e=dr(n,e=ln(t,e),1)),Ur(n,1),n=void 0;break e}n=n.return}5===e.tag&&(Zt(e,n=dr(e,n=ln(t,e),1)),Ur(e,1)),n=void 0}return n}function Nr(e,t){return yr?e=Pr?1:Tr:1&t.mode?(e=Vr?2+10*(1+((e-2+15)/10|0)):2+25*(1+((e-2+500)/25|0)),null!==br&&e===Tr&&(e+=1)):e=1,Vr&&(0===jr||e>jr)&&(jr=e),e}function Ur(e,t){e:{(0===e.expirationTime||e.expirationTime>t)&&(e.expirationTime=t);var n=e.alternate;null!==n&&(0===n.expirationTime||n.expirationTime>t)&&(n.expirationTime=t);var r=e.return;if(null===r&&5===e.tag)e=e.stateNode;else{for(;null!==r;){if(n=r.alternate,(0===r.childExpirationTime||r.childExpirationTime>t)&&(r.childExpirationTime=t),null!==n&&(0===n.childExpirationTime||n.childExpirationTime>t)&&(n.childExpirationTime=t),null===r.return&&5===r.tag){e=r.stateNode;break e}r=r.return}e=null}}null!==e&&(!yr&&0!==Tr&&t<Tr&&Er(),Vt(e,t),yr&&!Pr&&br===e||(t=e,e=e.expirationTime,null===t.nextScheduledRoot?(t.expirationTime=e,null===Ar?(Ir=Ar=t,t.nextScheduledRoot=t):(Ar=Ar.nextScheduledRoot=t).nextScheduledRoot=Ir):(0===(n=t.expirationTime)||e<n)&&(t.expirationTime=e),Wr||(Yr?Qr&&(Dr=t,Or=1,li(t,1,!0)):1===e?ai(1,null):ni(t,e))),Kr>Jr&&(Kr=0,m(!1,"Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops.")))}var Ir=null,Ar=null,zr=0,Mr=void 0,Wr=!1,Dr=null,Or=0,jr=0,Fr=!1,Hr=!1,Br=null,Lr=null,Yr=!1,Qr=!1,Vr=!1,Xr=null,$r=tt(),Gr=2+($r/10|0),qr=Gr,Jr=50,Kr=0,Zr=null,ei=1;function ti(){Gr=2+((tt()-$r)/10|0)}function ni(e,t){if(0!==zr){if(t>zr)return;null!==Mr&&(nt=null,clearTimeout(Mr))}zr=t,tt(),nt=oi,Mr=setTimeout(ot,1)}function ri(){return Wr?qr:(ii(),0!==Or&&1073741823!==Or||(ti(),qr=Gr),qr)}function ii(){var e=0,t=null;if(null!==Ar)for(var n=Ar,r=Ir;null!==r;){var i=r.expirationTime;if(0===i){if(m(null!==n&&null!==Ar,"Should have a previous and last root. This error is likely caused by a bug in React. 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This error is likely caused by a bug in React. Please file an issue."),Wr=!0,null===Lr||n){var r=e.finishedWork;null!==r?ui(e,r,t):(e.finishedWork=null,_r(e,!1,n),null!==(r=e.finishedWork)&&ui(e,r,t))}else null!==(r=e.finishedWork)?ui(e,r,t):(e.finishedWork=null,_r(e,!0,n),null!==(r=e.finishedWork)&&(si()?e.finishedWork=r:ui(e,r,t)));Wr=!1}function ui(e,t,n){var r=e.firstBatch;if(null!==r&&r._expirationTime<=n&&(null===Xr?Xr=[r]:Xr.push(r),r._defer))return e.finishedWork=t,void(e.expirationTime=0);e.finishedWork=null,e===Zr?Kr++:(Zr=e,Kr=0),Pr=yr=!0,m(e.current!==t,"Cannot commit the same tree as before. This is probably a bug related to the return field. This error is likely caused by a bug in React. Please file an issue."),m(0!==(n=e.pendingCommitExpirationTime),"Cannot commit an incomplete root. This error is likely caused by a bug in React. 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-__d(function(g,r,i,a,m,e,d){var t=r(d[0]);m.exports=t({initialize:function(t){this.reset().push(t)},push:function(){var t=Array.prototype.join.call(arguments,' ').match(/[a-df-z]|[\-+]?(?:[\d\.]e[\-+]?|[^\s\-+,a-z])+/gi);if(!t)return this;for(var n,s=t[0],h=1;s;){switch(s){case'm':this.move(t[h++],t[h++]);break;case'l':this.line(t[h++],t[h++]);break;case'c':this.curve(t[h++],t[h++],t[h++],t[h++],t[h++],t[h++]);break;case's':this.curve(t[h++],t[h++],null,null,t[h++],t[h++]);break;case'q':this.curve(t[h++],t[h++],t[h++],t[h++]);break;case't':this.curve(t[h++],t[h++]);break;case'a':this.arc(t[h+5],t[h+6],t[h],t[h+1],t[h+3],!+t[h+4],t[h+2]),h+=7;break;case'h':this.line(t[h++],0);break;case'v':this.line(0,t[h++]);break;case'M':this.moveTo(t[h++],t[h++]);break;case'L':this.lineTo(t[h++],t[h++]);break;case'C':this.curveTo(t[h++],t[h++],t[h++],t[h++],t[h++],t[h++]);break;case'S':this.curveTo(t[h++],t[h++],null,null,t[h++],t[h++]);break;case'Q':this.curveTo(t[h++],t[h++],t[h++],t[h++]);break;case'T':this.curveTo(t[h++],t[h++]);break;case'A':this.arcTo(t[h+5],t[h+6],t[h],t[h+1],t[h+3],!+t[h+4],t[h+2]),h+=7;break;case'H':this.lineTo(t[h++],this.penY);break;case'V':this.lineTo(this.penX,t[h++]);break;case'Z':case'z':this.close();break;default:s=n,h--;continue}'m'==(n=s)?n='l':'M'==n&&(n='L'),s=t[h++]}return this},reset:function(){return this.penX=this.penY=0,this.penDownX=this.penDownY=null,this._pivotX=this._pivotY=0,this.onReset(),this},move:function(t,n){return this.onMove(this.penX,this.penY,this._pivotX=this.penX+=+t,this._pivotY=this.penY+=+n),this},moveTo:function(t,n){return this.onMove(this.penX,this.penY,this._pivotX=this.penX=+t,this._pivotY=this.penY=+n),this},line:function(t,n){return this.lineTo(this.penX+ +t,this.penY+ +n)},lineTo:function(t,n){return null==this.penDownX&&(this.penDownX=this.penX,this.penDownY=this.penY),this.onLine(this.penX,this.penY,this._pivotX=this.penX=+t,this._pivotY=this.penY=+n),this},curve:function(t,n,s,h,o,u){var p=this.penX,c=this.penY;return this.curveTo(p+ +t,c+ +n,null==s?null:p+ +s,null==h?null:c+ +h,null==o?null:p+ +o,null==u?null:c+ +u)},curveTo:function(t,n,s,h,o,u){var p=this.penX,c=this.penY;return null==s&&(s=+t,h=+n,t=2*p-(this._pivotX||0),n=2*c-(this._pivotY||0)),null==o?(this._pivotX=+t,this._pivotY=+n,s=((o=+s)+2*+t)/3,h=((u=+h)+2*+n)/3,t=(p+2*+t)/3,n=(c+2*+n)/3):(this._pivotX=+s,this._pivotY=+h),null==this.penDownX&&(this.penDownX=p,this.penDownY=c),this.onBezierCurve(p,c,+t,+n,+s,+h,this.penX=+o,this.penY=+u),this},arc:function(t,n,s,h,o,u,p){return this.arcTo(this.penX+ +t,this.penY+ +n,s,h,o,u,p)},arcTo:function(t,n,s,h,o,u,p){if(h=Math.abs(+h||+s||+n-this.penY),!(s=Math.abs(+s||+t-this.penX))||!h||t==this.penX&&n==this.penY)return this.lineTo(t,n);var c=this.penX,l=this.penY,v=!+u,X=!!+o,Y=p?p*Math.PI/180:0,f=Math.cos(Y),M=Math.sin(Y),b=f*(t-=c)/2+M*(n-=l)/2,T=-M*t/2+f*n/2,k=s*s*h*h,w=h*h*b*b,_=s*s*T*T,D=k-_-w;if(D<0)s*=D=Math.sqrt(1-D/k),h*=D,b=t/2,T=n/2;else{D=Math.sqrt(D/(_+w)),X==v&&(D=-D);var z=-D*T*s/h,C=D*b*h/s;b=f*z-M*C+t/2,T=M*z+f*C+n/2}var B=f/s,A=M/s,L=-M/h,I=f/h,P=Math.atan2(L*-b+I*-T,B*-b+A*-T),N=Math.atan2(L*(t-b)+I*(n-T),B*(t-b)+A*(n-T));return b+=c,T+=l,t+=c,n+=l,null==this.penDownX&&(this.penDownX=this.penX,this.penDownY=this.penY),this.onArc(c,l,this._pivotX=this.penX=t,this._pivotY=this.penY=n,b,T,s,h,P,N,!v,p),this},counterArc:function(t,n,s,h,o){return this.arc(t,n,s,h,o,!0)},counterArcTo:function(t,n,s,h,o){return this.arcTo(t,n,s,h,o,!0)},close:function(){return null!=this.penDownX&&(this.onClose(this.penX,this.penY,this.penX=this.penDownX,this.penY=this.penDownY),this.penDownX=null),this},onReset:function(){},onMove:function(t,n,s,h){},onLine:function(t,n,s,h){this.onBezierCurve(t,n,t,n,s,h,s,h)},onBezierCurve:function(t,n,s,h,o,u,p,c){var l,v,X,Y,f,M=p-t,b=c-n,T=M*M+b*b;if((f=(X=s-t)*M+(Y=h-n)*b)>T?(X-=M,Y-=b):f>0&&0!=T&&(X-=f/T*M,Y-=f/T*b),l=X*X+Y*Y,(f=(X=o-t)*M+(Y=u-n)*b)>T?(X-=M,Y-=b):f>0&&0!=T&&(X-=f/T*M,Y-=f/T*b),v=X*X+Y*Y,l<.01&&v<.01)this.onLine(t,n,p,c);else{if(isNaN(l)||isNaN(v))throw new Error('Bad input');var k=.5*(s+o),w=.5*(h+u),_=.5*(s+t),D=.5*(h+n),z=.5*(_+k),C=.5*(D+w),B=.5*(p+o),A=.5*(c+u),L=.5*(B+k),I=.5*(A+w),P=.5*(z+L),N=.5*(C+I);this.onBezierCurve(t,n,_,D,z,C,P,N),this.onBezierCurve(P,N,L,I,B,A,p,c)}},onArc:function(t,n,s,h,o,u,p,c,l,v,X,Y){var f=Y?Y*Math.PI/180:0,M=Math.cos(f),b=Math.sin(f),T=M*p,k=-b*c,w=b*p,_=M*c,D=v-l;D<0&&!X?D+=2*Math.PI:D>0&&X&&(D-=2*Math.PI);for(var z=Math.ceil(Math.abs(D/(Math.PI/2))),C=D/z,B=1.3333333333333333*Math.tan(C/4),A=Math.cos(l),L=Math.sin(l),I=0;I<z;I++){var P=A-B*L,N=L+B*A;l+=C;var q=(A=Math.cos(l))+B*(L=Math.sin(l)),y=L-B*A;this.onBezierCurve(t,n,o+T*P+k*N,u+w*P+_*N,o+T*q+k*y,u+w*q+_*y,t=o+T*A+k*L,n=u+w*A+_*L)}},onClose:function(t,n,s,h){this.onLine(t,n,s,h)}})},178,[177]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=(r(d[1]),r(d[2])),l=r(d[3]),o=r(d[4]),n=r(d[5]),b=(r(d[6]),r(d[7])),c=(r(d[8]),r(d[9])),u=r(d[10]),p=(function(t){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,t),babelHelpers.createClass(l,[{key:"render",value:function(){var t=this.props,l=t.accessibilityLabel,o=t.accessibilityHint,p=t.color,f=t.onPress,y=t.title,C=t.hasTVPreferredFocus,v=t.disabled,H=t.testID,D=[h.button],P=[h.text];p&&D.push({backgroundColor:p});var x=[];v&&(D.push(h.buttonDisabled),P.push(h.textDisabled),x.push('disabled')),u('string'==typeof y,'The title prop of a Button must be a string');var k=y.toUpperCase(),R=b;return s.createElement(R,{accessibilityLabel:l,accessibilityHint:o,accessibilityRole:"button",accessibilityStates:x,hasTVPreferredFocus:C,testID:H,disabled:v,onPress:f},s.createElement(c,{style:D},s.createElement(n,{style:P,disabled:v},k)))}}]),l})(s.Component);p.propTypes={title:l.string.isRequired,accessibilityLabel:l.string,accessibilityHint:l.string,color:t,disabled:l.bool,hasTVPreferredFocus:l.bool,onPress:l.func.isRequired,testID:l.string};var h=o.create({button:{elevation:4,backgroundColor:'#2196F3',borderRadius:2},text:{color:'white',textAlign:'center',padding:8,fontWeight:'500'},buttonDisabled:{elevation:0,backgroundColor:'#dfdfdf'},textDisabled:{color:'#a1a1a1'}});m.exports=p},180,[104,43,97,94,98,133,181,185,186,119,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=r(d[1]),o=r(d[2]),n=r(d[3]),l=r(d[4]),p=r(d[5]),h=r(d[6]),c=r(d[7]),u=r(d[8]),y=r(d[9]),b=r(d[10]),P=r(d[11]),S=r(d[12]),f={activeOpacity:.85,delayPressOut:100,underlayColor:'black'},T={top:20,left:20,right:20,bottom:30},_=P({displayName:'TouchableHighlight',propTypes:babelHelpers.objectSpread({},u.propTypes,{activeOpacity:o.number,underlayColor:s,style:b.style,onShowUnderlay:o.func,onHideUnderlay:o.func,hasTVPreferredFocus:o.bool,tvParallaxProperties:o.object,testOnly_pressed:o.bool}),mixins:[t,c.Mixin],getDefaultProps:function(){return f},getInitialState:function(){return this._isMounted=!1,this.props.testOnly_pressed?babelHelpers.objectSpread({},this.touchableGetInitialState(),{extraChildStyle:{opacity:this.props.activeOpacity},extraUnderlayStyle:{backgroundColor:this.props.underlayColor}}):babelHelpers.objectSpread({},this.touchableGetInitialState(),{extraChildStyle:null,extraUnderlayStyle:null})},componentDidMount:function(){this._isMounted=!0,S(this.props)},componentWillUnmount:function(){this._isMounted=!1,clearTimeout(this._hideTimeout)},UNSAFE_componentWillReceiveProps:function(s){S(s)},viewConfig:{uiViewClassName:'RCTView',validAttributes:p.RCTView},touchableHandleActivePressIn:function(s){clearTimeout(this._hideTimeout),this._hideTimeout=null,this._showUnderlay(),this.props.onPressIn&&this.props.onPressIn(s)},touchableHandleActivePressOut:function(s){this._hideTimeout||this._hideUnderlay(),this.props.onPressOut&&this.props.onPressOut(s)},touchableHandlePress:function(s){clearTimeout(this._hideTimeout),n.isTV||(this._showUnderlay(),this._hideTimeout=setTimeout(this._hideUnderlay,this.props.delayPressOut)),this.props.onPress&&this.props.onPress(s)},touchableHandleLongPress:function(s){this.props.onLongPress&&this.props.onLongPress(s)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||T},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn},touchableGetLongPressDelayMS:function(){return this.props.delayLongPress},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut},_showUnderlay:function(){this._isMounted&&this._hasPressHandler()&&(this.setState({extraChildStyle:{opacity:this.props.activeOpacity},extraUnderlayStyle:{backgroundColor:this.props.underlayColor}}),this.props.onShowUnderlay&&this.props.onShowUnderlay())},_hideUnderlay:function(){clearTimeout(this._hideTimeout),this._hideTimeout=null,this.props.testOnly_pressed||this._hasPressHandler()&&(this.setState({extraChildStyle:null,extraUnderlayStyle:null}),this.props.onHideUnderlay&&this.props.onHideUnderlay())},_hasPressHandler:function(){return!!(this.props.onPress||this.props.onPressIn||this.props.onPressOut||this.props.onLongPress)},render:function(){var s=l.Children.only(this.props.children);return l.createElement(y,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:(void 0===this.props.enableFocusRing||this.props.enableFocusRing)&&!this.props.disabled,style:h.compose(this.props.style,this.state.extraUnderlayStyle),onLayout:this.props.onLayout,hitSlop:this.props.hitSlop,isTVSelectable:!0,tvParallaxProperties:this.props.tvParallaxProperties,hasTVPreferredFocus:this.props.hasTVPreferredFocus,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes,nativeID:this.props.nativeID,testID:this.props.testID},l.cloneElement(s,{style:h.compose(s.props.style,this.state.extraChildStyle)}),c.renderDebugView({color:'green',hitSlop:this.props.hitSlop}))}});m.exports=_},181,[104,155,94,43,97,134,98,142,182,119,157,161,184]);
-__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),c=r(d[5]),l=r(d[6]),h=r(d[7]),u=(r(d[8]),r(d[9])),b=u.AccessibilityComponentTypes,y=u.AccessibilityRoles,f=u.AccessibilityStates,P=u.AccessibilityTraits,R={top:20,left:20,right:20,bottom:30},S=l({displayName:'TouchableWithoutFeedback',mixins:[n,p.Mixin],propTypes:{accessible:o.bool,accessibilityLabel:o.node,accessibilityHint:o.string,accessibilityComponentType:o.oneOf(b),accessibilityRole:o.oneOf(y),accessibilityStates:o.arrayOf(o.oneOf(f)),accessibilityTraits:o.oneOfType([o.oneOf(P),o.arrayOf(o.oneOf(P))]),onAccessibilityTap:o.func,onFocus:o.func,onBlur:o.func,disabled:o.bool,onMouseEnter:o.func,onMouseLeave:o.func,onPress:o.func,onPressIn:o.func,onPressOut:o.func,onLayout:o.func,onLongPress:o.func,nativeID:o.string,testID:o.string,delayPressIn:o.number,delayPressOut:o.number,delayLongPress:o.number,pressRetentionOffset:s,hitSlop:s},getInitialState:function(){return this.touchableGetInitialState()},componentDidMount:function(){h(this.props)},UNSAFE_componentWillReceiveProps:function(s){h(s)},touchableHandlePress:function(s){this.props.onPress&&this.props.onPress(s)},touchableHandleActivePressIn:function(s){this.props.onPressIn&&this.props.onPressIn(s)},touchableHandleActivePressOut:function(s){this.props.onPressOut&&this.props.onPressOut(s)},touchableHandleLongPress:function(s){this.props.onLongPress&&this.props.onLongPress(s)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||R},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn||0},touchableGetLongPressDelayMS:function(){return 0===this.props.delayLongPress?0:this.props.delayLongPress||500},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut||0},render:function(){var s=t.Children.only(this.props.children),o=s.props.children;return p.TOUCH_TARGET_DEBUG&&s.type===c&&(o=t.Children.toArray(o)).push(p.renderDebugView({color:'red',hitSlop:this.props.hitSlop})),t.cloneElement(s,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityComponentType:this.props.accessibilityComponentType,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,accessibilityTraits:this.props.accessibilityTraits,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:!0===this.props.enableFocusRing&&!this.props.disabled,nativeID:this.props.nativeID,testID:this.props.testID,onLayout:this.props.onLayout,hitSlop:this.props.hitSlop,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes,children:o})}});m.exports=S},182,[136,97,94,183,142,119,161,184,47,160]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t='undefined'==typeof window?g:window,n=function(t,n,s){return function(c,o){var l=t(function(){n.call(this,l),c.apply(this,arguments)}.bind(this),o);return this[s]?this[s].push(l):this[s]=[l],l}},s=function(t,n){return function(s){if(this[n]){var c=this[n].indexOf(s);-1!==c&&this[n].splice(c,1)}t(s)}},c='TimerMixin_timeouts',o=s(t.clearTimeout,c),l=n(t.setTimeout,o,c),u='TimerMixin_intervals',h=s(t.clearInterval,u),f=n(t.setInterval,function(){},u),I='TimerMixin_immediates',v=s(t.clearImmediate,I),T=n(t.setImmediate,v,I),p='TimerMixin_rafs',x=s(t.cancelAnimationFrame,p),_={componentWillUnmount:function(){this[c]&&this[c].forEach(function(n){t.clearTimeout(n)}),this[c]=null,this[u]&&this[u].forEach(function(n){t.clearInterval(n)}),this[u]=null,this[I]&&this[I].forEach(function(n){t.clearImmediate(n)}),this[I]=null,this[p]&&this[p].forEach(function(n){t.cancelAnimationFrame(n)}),this[p]=null},setTimeout:l,clearTimeout:o,setInterval:f,clearInterval:h,setImmediate:T,clearImmediate:v,requestAnimationFrame:n(t.requestAnimationFrame,x,p),cancelAnimationFrame:x};m.exports=_},183,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]);m.exports=function(s){n(!(s.delayPressIn<0||s.delayPressOut<0||s.delayLongPress<0),'Touchable components cannot have negative delay properties')}},184,[6]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),c=r(d[5]),l=r(d[6]),h=r(d[7]),u=r(d[8]),b=r(d[9]),y=r(d[10]),f={top:20,left:20,right:20,bottom:30},P=u({displayName:'TouchableOpacity',mixins:[c,l.Mixin,o],propTypes:babelHelpers.objectSpread({},h.propTypes,{activeOpacity:p.number,hasTVPreferredFocus:p.bool,tvParallaxProperties:p.object}),getDefaultProps:function(){return{activeOpacity:.2}},getInitialState:function(){return babelHelpers.objectSpread({},this.touchableGetInitialState(),{anim:new t.Value(this._getChildStyleOpacityWithDefault())})},componentDidMount:function(){b(this.props)},UNSAFE_componentWillReceiveProps:function(t){b(t)},componentDidUpdate:function(t,s){this.props.disabled!==t.disabled&&this._opacityInactive(250)},setOpacityTo:function(o,n){t.timing(this.state.anim,{toValue:o,duration:n,easing:s.inOut(s.quad),useNativeDriver:!0}).start()},touchableHandleActivePressIn:function(t){'onResponderGrant'===t.dispatchConfig.registrationName?this._opacityActive(0):this._opacityActive(150),this.props.onPressIn&&this.props.onPressIn(t)},touchableHandleActivePressOut:function(t){this._opacityInactive(250),this.props.onPressOut&&this.props.onPressOut(t)},touchableHandlePress:function(t){this.props.onPress&&this.props.onPress(t)},touchableHandleLongPress:function(t){this.props.onLongPress&&this.props.onLongPress(t)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||f},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn||0},touchableGetLongPressDelayMS:function(){return 0===this.props.delayLongPress?0:this.props.delayLongPress||500},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut},_opacityActive:function(t){this.setOpacityTo(this.props.activeOpacity,t)},_opacityInactive:function(t){this.setOpacityTo(this._getChildStyleOpacityWithDefault(),t)},_getChildStyleOpacityWithDefault:function(){var t=y(this.props.style)||{};return void 0==t.opacity?1:t.opacity},render:function(){return n.createElement(t.View,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:(void 0===this.props.enableFocusRing||this.props.enableFocusRing)&&!this.props.disabled,style:[this.props.style,{opacity:this.state.anim}],nativeID:this.props.nativeID,testID:this.props.testID,onLayout:this.props.onLayout,isTVSelectable:!0,hasTVPreferredFocus:this.props.hasTVPreferredFocus,tvParallaxProperties:this.props.tvParallaxProperties,hitSlop:this.props.hitSlop,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes},this.props.children,l.renderDebugView({color:'cyan',hitSlop:this.props.hitSlop}))}});m.exports=P},186,[187,213,155,97,94,183,142,182,161,184,89]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]),p=r(d[4]),s=r(d[5]),A=r(d[6]);m.exports=babelHelpers.objectSpread({},t,{View:t.createAnimatedComponent(A),Text:t.createAnimatedComponent(s),Image:t.createAnimatedComponent(o),ScrollView:t.createAnimatedComponent(c),FlatList:t.createAnimatedComponent(n),SectionList:t.createAnimatedComponent(p)})},187,[188,216,167,222,239,133,119]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=(r(d[1]),(function(l){function _(t,l,s){var n;return babelHelpers.classCallCheck(this,_),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(_).call(this)))._a=t,n._min=l,n._max=s,n._value=n._lastValue=n._a.__getValue(),n}return babelHelpers.inherits(_,l),babelHelpers.createClass(_,[{key:"__makeNative",value:function(){this._a.__makeNative(),babelHelpers.get(babelHelpers.getPrototypeOf(_.prototype),"__makeNative",this).call(this)}},{key:"interpolate",value:function(l){return new t(this,l)}},{key:"__getValue",value:function(){var t=this._a.__getValue(),l=t-this._lastValue;return this._lastValue=t,this._value=Math.min(Math.max(this._value+l,this._min),this._max),this._value}},{key:"__attach",value:function(){this._a.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),babelHelpers.get(babelHelpers.getPrototypeOf(_.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'diffclamp',input:this._a.__getNativeTag(),min:this._min,max:this._max}}}]),_})(r(d[2])));m.exports=l},198,[191,192,194]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=(r(d[1]),r(d[2])),s=(function(s){function l(t,s){var n;return babelHelpers.classCallCheck(this,l),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).call(this)))._a='number'==typeof t?new _(t):t,n._b='number'==typeof s?new _(s):s,n}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),babelHelpers.get(babelHelpers.getPrototypeOf(l.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){var t=this._a.__getValue(),_=this._b.__getValue();return 0===_&&console.error('Detected division by zero in AnimatedDivision'),t/_}},{key:"interpolate",value:function(_){return new t(this,_)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),babelHelpers.get(babelHelpers.getPrototypeOf(l.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'division',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),l})(r(d[3]));m.exports=s},199,[191,192,190,194]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=(r(d[1]),(function(l){function s(t,l){var u;return babelHelpers.classCallCheck(this,s),(u=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).call(this)))._a=t,u._modulus=l,u}return babelHelpers.inherits(s,l),babelHelpers.createClass(s,[{key:"__makeNative",value:function(){this._a.__makeNative(),babelHelpers.get(babelHelpers.getPrototypeOf(s.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return(this._a.__getValue()%this._modulus+this._modulus)%this._modulus}},{key:"interpolate",value:function(l){return new t(this,l)}},{key:"__attach",value:function(){this._a.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),babelHelpers.get(babelHelpers.getPrototypeOf(s.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'modulus',input:this._a.__getNativeTag(),modulus:this._modulus}}}]),s})(r(d[2])));m.exports=l},200,[191,192,194]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=(r(d[1]),r(d[2])),l=(function(l){function s(t,l){var n;return babelHelpers.classCallCheck(this,s),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).call(this)))._a='number'==typeof t?new _(t):t,n._b='number'==typeof l?new _(l):l,n}return babelHelpers.inherits(s,l),babelHelpers.createClass(s,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),babelHelpers.get(babelHelpers.getPrototypeOf(s.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return this._a.__getValue()*this._b.__getValue()}},{key:"interpolate",value:function(_){return new t(this,_)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),babelHelpers.get(babelHelpers.getPrototypeOf(s.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'multiplication',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),s})(r(d[3]));m.exports=l},201,[191,192,190,194]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).AnimatedEvent,n=r(d[1]),s=r(d[2]),_=r(d[3]),o=r(d[4]),l=r(d[5]),c=(function(c){function v(t,n){var _;return babelHelpers.classCallCheck(this,v),_=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(v).call(this)),t.style&&(t=babelHelpers.objectSpread({},t,{style:new s(t.style)})),_._props=t,_._callback=n,_.__attach(),_}return babelHelpers.inherits(v,c),babelHelpers.createClass(v,[{key:"__getValue",value:function(){var _={};for(var o in this._props){var l=this._props[o];l instanceof n?(!l.__isNative||l instanceof s)&&(_[o]=l.__getValue()):_[o]=l instanceof t?l.__getHandler():l}return _}},{key:"__getAnimatedValue",value:function(){var t={};for(var s in this._props){var _=this._props[s];_ instanceof n&&(t[s]=_.__getAnimatedValue())}return t}},{key:"__attach",value:function(){for(var t in this._props){var s=this._props[t];s instanceof n&&s.__addChild(this)}}},{key:"__detach",value:function(){for(var t in this.__isNative&&this._animatedView&&this.__disconnectAnimatedView(),this._props){var s=this._props[t];s instanceof n&&s.__removeChild(this)}babelHelpers.get(babelHelpers.getPrototypeOf(v.prototype),"__detach",this).call(this)}},{key:"update",value:function(){this._callback()}},{key:"__makeNative",value:function(){if(!this.__isNative){for(var t in this.__isNative=!0,this._props){var s=this._props[t];s instanceof n&&s.__makeNative()}this._animatedView&&this.__connectAnimatedView()}}},{key:"setNativeView",value:function(t){this._animatedView!==t&&(this._animatedView=t,this.__isNative&&this.__connectAnimatedView())}},{key:"__connectAnimatedView",value:function(){l(this.__isNative,'Expected node to be marked as "native"');var t=o.findNodeHandle(this._animatedView);l(null!=t,'Unable to locate attached view in the native tree'),_.API.connectAnimatedNodeToView(this.__getNativeTag(),t)}},{key:"__disconnectAnimatedView",value:function(){l(this.__isNative,'Expected node to be marked as "native"');var t=o.findNodeHandle(this._animatedView);l(null!=t,'Unable to locate attached view in the native tree'),_.API.disconnectAnimatedNodeFromView(this.__getNativeTag(),t)}},{key:"__getNativeConfig",value:function(){var t={};for(var s in this._props){var _=this._props[s];_ instanceof n&&(t[s]=_.__getNativeTag())}return{type:'props',props:t}}}]),v})(n);m.exports=c},202,[189,192,203,193,25,6]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),l=1,u=(function(s){function u(s){var l;babelHelpers.classCallCheck(this,u),l=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this));var o=s||{x:0,y:0};return'number'==typeof o.x&&'number'==typeof o.y?(l.x=new t(o.x),l.y=new t(o.y)):(n(o.x instanceof t&&o.y instanceof t,"AnimatedValueXY must be initialized with an object of numbers or AnimatedValues."),l.x=o.x,l.y=o.y),l._listeners={},l}return babelHelpers.inherits(u,s),babelHelpers.createClass(u,[{key:"setValue",value:function(t){this.x.setValue(t.x),this.y.setValue(t.y)}},{key:"setOffset",value:function(t){this.x.setOffset(t.x),this.y.setOffset(t.y)}},{key:"flattenOffset",value:function(){this.x.flattenOffset(),this.y.flattenOffset()}},{key:"extractOffset",value:function(){this.x.extractOffset(),this.y.extractOffset()}},{key:"__getValue",value:function(){return{x:this.x.__getValue(),y:this.y.__getValue()}}},{key:"resetAnimation",value:function(t){this.x.resetAnimation(),this.y.resetAnimation(),t&&t(this.__getValue())}},{key:"stopAnimation",value:function(t){this.x.stopAnimation(),this.y.stopAnimation(),t&&t(this.__getValue())}},{key:"addListener",value:function(t){var s=this,n=String(l++),u=function(n){n.value;t(s.__getValue())};return this._listeners[n]={x:this.x.addListener(u),y:this.y.addListener(u)},n}},{key:"removeListener",value:function(t){this.x.removeListener(this._listeners[t].x),this.y.removeListener(this._listeners[t].y),delete this._listeners[t]}},{key:"removeAllListeners",value:function(){this.x.removeAllListeners(),this.y.removeAllListeners(),this._listeners={}}},{key:"getLayout",value:function(){return{left:this.x,top:this.y}}},{key:"getTranslateTransform",value:function(){return[{translateX:this.x},{translateY:this.y}]}}]),u})(s);m.exports=u},207,[190,194,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]).shouldUseNativeDriver,n=(function(t){function n(t){var o;return babelHelpers.classCallCheck(this,n),(o=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).call(this)))._deceleration=void 0!==t.deceleration?t.deceleration:.998,o._velocity=t.velocity,o._useNativeDriver=s(t),o.__isInteraction=void 0===t.isInteraction||t.isInteraction,o.__iterations=void 0!==t.iterations?t.iterations:1,o}return babelHelpers.inherits(n,t),babelHelpers.createClass(n,[{key:"__getNativeAnimationConfig",value:function(){return{type:'decay',deceleration:this._deceleration,velocity:this._velocity,iterations:this.__iterations}}},{key:"start",value:function(t,s,n,o,l){this.__active=!0,this._lastValue=t,this._fromValue=t,this._onUpdate=s,this.__onEnd=n,this._startTime=Date.now(),this._useNativeDriver?this.__startNativeAnimation(l):this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))}},{key:"onUpdate",value:function(){var t=Date.now(),s=this._fromValue+this._velocity/(1-this._deceleration)*(1-Math.exp(-(1-this._deceleration)*(t-this._startTime)));this._onUpdate(s),Math.abs(this._lastValue-s)<.1?this.__debouncedOnEnd({finished:!0}):(this._lastValue=s,this.__active&&(this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))))}},{key:"stop",value:function(){babelHelpers.get(babelHelpers.getPrototypeOf(n.prototype),"stop",this).call(this),this.__active=!1,g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),n})(t);m.exports=n},208,[209,193]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=(function(){function n(){babelHelpers.classCallCheck(this,n)}return babelHelpers.createClass(n,[{key:"start",value:function(t,n,o,_,s){}},{key:"stop",value:function(){this.__nativeId&&t.API.stopAnimation(this.__nativeId)}},{key:"__getNativeAnimationConfig",value:function(){throw new Error('This animation type cannot be offloaded to native')}},{key:"__debouncedOnEnd",value:function(t){var n=this.__onEnd;this.__onEnd=null,n&&n(t)}},{key:"__startNativeAnimation",value:function(n){n.__makeNative(),this.__nativeId=t.generateNewAnimationId(),t.API.startAnimatingNode(this.__nativeId,n.__getNativeTag(),this.__getNativeAnimationConfig(),this.__debouncedOnEnd.bind(this))}}]),n})();m.exports=n},209,[193]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]),r(d[1]);var t=r(d[2]),s=r(d[3]),n=r(d[4]),o=r(d[5]).shouldUseNativeDriver;function h(t,s){return void 0===t||null===t?s:t}var l=(function(t){function l(t){var _;if(babelHelpers.classCallCheck(this,l),(_=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).call(this)))._overshootClamping=h(t.overshootClamping,!1),_._restDisplacementThreshold=h(t.restDisplacementThreshold,.001),_._restSpeedThreshold=h(t.restSpeedThreshold,.001),_._initialVelocity=h(t.velocity,0),_._lastVelocity=h(t.velocity,0),_._toValue=t.toValue,_._delay=h(t.delay,0),_._useNativeDriver=o(t),_.__isInteraction=void 0===t.isInteraction||t.isInteraction,_.__iterations=void 0!==t.iterations?t.iterations:1,void 0!==t.stiffness||void 0!==t.damping||void 0!==t.mass)n(void 0===t.bounciness&&void 0===t.speed&&void 0===t.tension&&void 0===t.friction,'You can define one of bounciness/speed, tension/friction, or stiffness/damping/mass, but not more than one'),_._stiffness=h(t.stiffness,100),_._damping=h(t.damping,10),_._mass=h(t.mass,1);else if(void 0!==t.bounciness||void 0!==t.speed){n(void 0===t.tension&&void 0===t.friction&&void 0===t.stiffness&&void 0===t.damping&&void 0===t.mass,'You can define one of bounciness/speed, tension/friction, or stiffness/damping/mass, but not more than one');var f=s.fromBouncinessAndSpeed(h(t.bounciness,8),h(t.speed,12));_._stiffness=f.stiffness,_._damping=f.damping,_._mass=1}else{var c=s.fromOrigamiTensionAndFriction(h(t.tension,40),h(t.friction,7));_._stiffness=c.stiffness,_._damping=c.damping,_._mass=1}return n(_._stiffness>0,'Stiffness value must be greater than 0'),n(_._damping>0,'Damping value must be greater than 0'),n(_._mass>0,'Mass value must be greater than 0'),_}return babelHelpers.inherits(l,t),babelHelpers.createClass(l,[{key:"__getNativeAnimationConfig",value:function(){return{type:'spring',overshootClamping:this._overshootClamping,restDisplacementThreshold:this._restDisplacementThreshold,restSpeedThreshold:this._restSpeedThreshold,stiffness:this._stiffness,damping:this._damping,mass:this._mass,initialVelocity:h(this._initialVelocity,this._lastVelocity),toValue:this._toValue,iterations:this.__iterations}}},{key:"start",value:function(t,s,n,o,h){var _=this;if(this.__active=!0,this._startPosition=t,this._lastPosition=this._startPosition,this._onUpdate=s,this.__onEnd=n,this._lastTime=Date.now(),this._frameTime=0,o instanceof l){var f=o.getInternalState();this._lastPosition=f.lastPosition,this._lastVelocity=f.lastVelocity,this._initialVelocity=this._lastVelocity,this._lastTime=f.lastTime}var c=function(){_._useNativeDriver?_.__startNativeAnimation(h):_.onUpdate()};this._delay?this._timeout=setTimeout(c,this._delay):c()}},{key:"getInternalState",value:function(){return{lastPosition:this._lastPosition,lastVelocity:this._lastVelocity,lastTime:this._lastTime}}},{key:"onUpdate",value:function(){var t=Date.now();t>this._lastTime+64&&(t=this._lastTime+64);var s=(t-this._lastTime)/1e3;this._frameTime+=s;var n=this._damping,o=this._mass,h=this._stiffness,l=-this._initialVelocity,_=n/(2*Math.sqrt(h*o)),f=Math.sqrt(h/o),c=f*Math.sqrt(1-_*_),u=this._toValue-this._startPosition,p=0,v=0,b=this._frameTime;if(_<1){var y=Math.exp(-_*f*b);p=this._toValue-y*((l+_*f*u)/c*Math.sin(c*b)+u*Math.cos(c*b)),v=_*f*y*(Math.sin(c*b)*(l+_*f*u)/c+u*Math.cos(c*b))-y*(Math.cos(c*b)*(l+_*f*u)-c*u*Math.sin(c*b))}else{var V=Math.exp(-f*b);p=this._toValue-V*(u+(l+f*u)*b),v=V*(l*(b*f-1)+b*u*(f*f))}if(this._lastTime=t,this._lastPosition=p,this._lastVelocity=v,this._onUpdate(p),this.__active){var T=!1;this._overshootClamping&&0!==this._stiffness&&(T=this._startPosition<this._toValue?p>this._toValue:p<this._toValue);var M=Math.abs(v)<=this._restSpeedThreshold,P=!0;if(0!==this._stiffness&&(P=Math.abs(this._toValue-p)<=this._restDisplacementThreshold),T||M&&P)return 0!==this._stiffness&&(this._lastPosition=this._toValue,this._lastVelocity=0,this._onUpdate(this._toValue)),void this.__debouncedOnEnd({finished:!0});this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))}}},{key:"stop",value:function(){babelHelpers.get(babelHelpers.getPrototypeOf(l.prototype),"stop",this).call(this),this.__active=!1,clearTimeout(this._timeout),g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),l})(t);m.exports=l},210,[190,207,209,211,6,193]);
-__d(function(g,r,i,a,m,e,d){'use strict';function n(n){return 3.62*(n-30)+194}function t(n){return 3*(n-8)+25}m.exports={fromOrigamiTensionAndFriction:function(o,u){return{stiffness:n(o),damping:t(u)}},fromBouncinessAndSpeed:function(o,u){function f(n,t,o){return(n-t)/(o-t)}function c(n,t,o){return t+n*(o-t)}function s(n,t,o){return n*o+(1-n)*t}function p(n){return 44e-6*Math.pow(n,3)-.006*Math.pow(n,2)+.36*n+2}function h(n){return 4.5e-7*Math.pow(n,3)-332e-6*Math.pow(n,2)+.1078*n+5.84}var w=f(o/1.7,0,20);w=c(w,0,.8);var M,v,A,_,x=c(f(u/1.7,0,20),.5,200),B=(M=w,v=(A=x)<=18?(_=A,7e-4*Math.pow(_,3)-.031*Math.pow(_,2)+.64*_+1.28):A>18&&A<=44?p(A):h(A),s(2*M-M*M,v,.01));return{stiffness:n(x),damping:t(B)}}}},211,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]),r(d[1]);var t,s=r(d[2]),n=r(d[3]).shouldUseNativeDriver;function o(){if(!t){var s=r(d[4]);t=s.inOut(s.ease)}return t}var _=(function(t){function s(t){var _;return babelHelpers.classCallCheck(this,s),(_=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).call(this)))._toValue=t.toValue,_._easing=void 0!==t.easing?t.easing:o(),_._duration=void 0!==t.duration?t.duration:500,_._delay=void 0!==t.delay?t.delay:0,_.__iterations=void 0!==t.iterations?t.iterations:1,_.__isInteraction=void 0===t.isInteraction||t.isInteraction,_._useNativeDriver=n(t),_}return babelHelpers.inherits(s,t),babelHelpers.createClass(s,[{key:"__getNativeAnimationConfig",value:function(){for(var t=[],s=0;s<this._duration;s+=16.666666666666668)t.push(this._easing(s/this._duration));return t.push(this._easing(1)),{type:'frames',frames:t,toValue:this._toValue,iterations:this.__iterations}}},{key:"start",value:function(t,s,n,o,_){var u=this;this.__active=!0,this._fromValue=t,this._onUpdate=s,this.__onEnd=n;var h=function(){0!==u._duration||u._useNativeDriver?(u._startTime=Date.now(),u._useNativeDriver?u.__startNativeAnimation(_):u._animationFrame=requestAnimationFrame(u.onUpdate.bind(u))):(u._onUpdate(u._toValue),u.__debouncedOnEnd({finished:!0}))};this._delay?this._timeout=setTimeout(h,this._delay):h()}},{key:"onUpdate",value:function(){var t=Date.now();if(t>=this._startTime+this._duration)return 0===this._duration?this._onUpdate(this._toValue):this._onUpdate(this._fromValue+this._easing(1)*(this._toValue-this._fromValue)),void this.__debouncedOnEnd({finished:!0});this._onUpdate(this._fromValue+this._easing((t-this._startTime)/this._duration)*(this._toValue-this._fromValue)),this.__active&&(this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this)))}},{key:"stop",value:function(){babelHelpers.get(babelHelpers.getPrototypeOf(s.prototype),"stop",this).call(this),this.__active=!1,clearTimeout(this._timeout),g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),s})(s);m.exports=_},212,[190,207,209,193,213]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n,u=(function(){function u(){babelHelpers.classCallCheck(this,u)}return babelHelpers.createClass(u,null,[{key:"step0",value:function(n){return n>0?1:0}},{key:"step1",value:function(n){return n>=1?1:0}},{key:"linear",value:function(n){return n}},{key:"ease",value:function(t){return n||(n=u.bezier(.42,0,1,1)),n(t)}},{key:"quad",value:function(n){return n*n}},{key:"cubic",value:function(n){return n*n*n}},{key:"poly",value:function(n){return function(u){return Math.pow(u,n)}}},{key:"sin",value:function(n){return 1-Math.cos(n*Math.PI/2)}},{key:"circle",value:function(n){return 1-Math.sqrt(1-n*n)}},{key:"exp",value:function(n){return Math.pow(2,10*(n-1))}},{key:"elastic",value:function(){var n=(arguments.length>0&&void 0!==arguments[0]?arguments[0]:1)*Math.PI;return function(u){return 1-Math.pow(Math.cos(u*Math.PI/2),3)*Math.cos(u*n)}}},{key:"back",value:function(n){return void 0===n&&(n=1.70158),function(u){return u*u*((n+1)*u-n)}}},{key:"bounce",value:function(n){return n<.36363636363636365?7.5625*n*n:n<.7272727272727273?7.5625*(n-=.5454545454545454)*n+.75:n<.9090909090909091?7.5625*(n-=.8181818181818182)*n+.9375:7.5625*(n-=.9545454545454546)*n+.984375}},{key:"bezier",value:function(n,u,t,c){return r(d[0])(n,u,t,c)}},{key:"in",value:function(n){return n}},{key:"out",value:function(n){return function(u){return 1-n(1-u)}}},{key:"inOut",value:function(n){return function(u){return u<.5?n(2*u)/2:1-n(2*(1-u))/2}}}]),u})();m.exports=u},213,[214]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=4,t=.001,u=1e-7,o=10,f=.1,c='function'==typeof Float32Array;function v(n,t){return 1-3*t+3*n}function s(n,t){return 3*t-6*n}function w(n){return 3*n}function l(n,t,u){return((v(t,u)*n+s(t,u))*n+w(t))*n}function y(n,t,u){return 3*v(t,u)*n*n+2*s(t,u)*n+w(t)}function b(n,t,f,c,v){var s,w,y=0;do{(s=l(w=t+(f-t)/2,c,v)-n)>0?f=w:t=w}while(Math.abs(s)>u&&++y<o);return w}function h(t,u,o,f){for(var c=0;c<n;++c){var v=y(u,o,f);if(0===v)return u;u-=(l(u,o,f)-t)/v}return u}m.exports=function(n,u,o,v){if(!(0<=n&&n<=1&&0<=o&&o<=1))throw new Error('bezier x values must be in [0, 1] range');var s=c?new Float32Array(11):new Array(11);if(n!==u||o!==v)for(var w=0;w<11;++w)s[w]=l(w*f,n,o);function A(u){for(var c=0,v=1;10!==v&&s[v]<=u;++v)c+=f;var w=c+(u-s[--v])/(s[v+1]-s[v])*f,l=y(w,n,o);return l>=t?h(u,w,n,o):0===l?w:b(u,c,c+f,n,o)}return function(t){return n===u&&o===v?t:0===t?0:1===t?1:l(A(t),u,v)}}},214,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).AnimatedEvent,n=r(d[1]),o=r(d[2]),s=r(d[3]),p=r(d[4]);m.exports=function(c){p('function'!=typeof c||c.prototype&&c.prototype.isReactComponent,"`createAnimatedComponent` does not support stateless functional components; use a class component instead.");var l=(function(s){function p(t){var n;return babelHelpers.classCallCheck(this,p),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(p).call(this,t)))._invokeAnimatedPropsCallbackOnMount=!1,n._eventDetachers=[],n._animatedPropsCallback=function(){if(null==n._component)n._invokeAnimatedPropsCallbackOnMount=!0;else if(p.__skipSetNativeProps_FOR_TESTS_ONLY||'function'!=typeof n._component.setNativeProps)n.forceUpdate();else{if(n._propsAnimated.__isNative)throw new Error("Attempting to run JS driven animation on animated node that has been moved to \"native\" earlier by starting an animation with `useNativeDriver: true`");n._component.setNativeProps(n._propsAnimated.__getAnimatedValue())}},n._setComponentRef=n._setComponentRef.bind(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(n))),n}return babelHelpers.inherits(p,s),babelHelpers.createClass(p,[{key:"componentWillUnmount",value:function(){this._propsAnimated&&this._propsAnimated.__detach(),this._detachNativeEvents()}},{key:"setNativeProps",value:function(t){this._component.setNativeProps(t)}},{key:"UNSAFE_componentWillMount",value:function(){this._attachProps(this.props)}},{key:"componentDidMount",value:function(){this._invokeAnimatedPropsCallbackOnMount&&(this._invokeAnimatedPropsCallbackOnMount=!1,this._animatedPropsCallback()),this._propsAnimated.setNativeView(this._component),this._attachNativeEvents()}},{key:"_attachNativeEvents",value:function(){var n=this,o=this._component.getScrollableNode?this._component.getScrollableNode():this._component,s=function(s){var p=n.props[s];p instanceof t&&p.__isNative&&(p.__attach(o,s),n._eventDetachers.push(function(){return p.__detach(o,s)}))};for(var p in this.props)s(p)}},{key:"_detachNativeEvents",value:function(){this._eventDetachers.forEach(function(t){return t()}),this._eventDetachers=[]}},{key:"_attachProps",value:function(t){var o=this._propsAnimated;this._propsAnimated=new n(t,this._animatedPropsCallback),o&&o.__detach()}},{key:"UNSAFE_componentWillReceiveProps",value:function(t){this._attachProps(t)}},{key:"componentDidUpdate",value:function(t){this._component!==this._prevComponent&&this._propsAnimated.setNativeView(this._component),this._component===this._prevComponent&&t===this.props||(this._detachNativeEvents(),this._attachNativeEvents())}},{key:"render",value:function(){var t=this._propsAnimated.__getValue();return o.createElement(c,babelHelpers.extends({},t,{ref:this._setComponentRef,collapsable:!this._propsAnimated.__isNative&&t.collapsable}))}},{key:"_setComponentRef",value:function(t){this._prevComponent=this._component,this._component=t}},{key:"getNode",value:function(){return this._component}}]),p})(o.Component);l.__skipSetNativeProps_FOR_TESTS_ONLY=!1;var _=c.propTypes;return l.propTypes={style:function(t,n,o){if(_)for(var p in s)_[p]||void 0===t[p]||console.warn('You are setting the style `{ '+p+": ... }` as a prop. You should nest it in a style object. E.g. `{ style: { "+p+': ... } }`')}},l}},215,[189,202,97,113,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=(r(d[4]),r(d[5])),u=r(d[6]),c=babelHelpers.objectSpread({},o.defaultProps,{numColumns:1}),p=(function(c){function p(t){var o;return babelHelpers.classCallCheck(this,p),(o=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(p).call(this,t)))._hasWarnedLegacy=!1,o._virtualizedListPairs=[],o._captureRef=function(t){o._listRef=t},o._getItem=function(t,n){var s=o.props.numColumns;if(s>1){for(var l=[],u=0;u<s;u++){var c=t[n*s+u];null!=c&&l.push(c)}return l}return t[n]},o._getItemCount=function(t){return t?Math.ceil(t.length/o.props.numColumns):0},o._keyExtractor=function(t,n){var s=o.props,l=s.keyExtractor,c=s.numColumns;return c>1?(u(Array.isArray(t),"FlatList: Encountered internal consistency error, expected each item to consist of an array with 1-%s columns; instead, received a single item.",c),t.map(function(t,s){return l(t,n*c+s)}).join(':')):l(t,n)},o._renderItem=function(t){var c=o.props,p=c.renderItem,h=c.numColumns,b=c.columnWrapperStyle;if(h>1){var C=t.item,y=t.index,v=t.isSelected;return u(Array.isArray(C),'Expected array of items with numColumns > 1'),n.createElement(s,{style:l.compose(f.row,b)},C.map(function(s,o){var l=p({item:s,index:y*h+o,isSelected:v,separators:t.separators});return l&&n.cloneElement(l,{key:o})}))}return p(t)},o._checkProps(o.props),o.props.viewabilityConfigCallbackPairs?o._virtualizedListPairs=o.props.viewabilityConfigCallbackPairs.map(function(t){return{viewabilityConfig:t.viewabilityConfig,onViewableItemsChanged:o._createOnViewableItemsChanged(t.onViewableItemsChanged)}}):o.props.onViewableItemsChanged&&o._virtualizedListPairs.push({viewabilityConfig:o.props.viewabilityConfig,onViewableItemsChanged:o._createOnViewableItemsChanged(o.props.onViewableItemsChanged)}),o}return babelHelpers.inherits(p,c),babelHelpers.createClass(p,[{key:"scrollToEnd",value:function(t){this._listRef&&this._listRef.scrollToEnd(t)}},{key:"scrollToIndex",value:function(t){this._listRef&&this._listRef.scrollToIndex(t)}},{key:"scrollToItem",value:function(t){this._listRef&&this._listRef.scrollToItem(t)}},{key:"scrollToOffset",value:function(t){this._listRef&&this._listRef.scrollToOffset(t)}},{key:"recordInteraction",value:function(){this._listRef&&this._listRef.recordInteraction()}},{key:"flashScrollIndicators",value:function(){this._listRef&&this._listRef.flashScrollIndicators()}},{key:"getScrollResponder",value:function(){if(this._listRef)return this._listRef.getScrollResponder()}},{key:"getScrollableNode",value:function(){if(this._listRef)return this._listRef.getScrollableNode()}},{key:"setNativeProps",value:function(t){this._listRef&&this._listRef.setNativeProps(t)}}]),babelHelpers.createClass(p,[{key:"componentDidUpdate",value:function(t){u(t.numColumns===this.props.numColumns,"Changing numColumns on the fly is not supported. Change the key prop on FlatList when changing the number of columns to force a fresh render of the component."),u(t.onViewableItemsChanged===this.props.onViewableItemsChanged,'Changing onViewableItemsChanged on the fly is not supported'),u(t.viewabilityConfig===this.props.viewabilityConfig,'Changing viewabilityConfig on the fly is not supported'),u(t.viewabilityConfigCallbackPairs===this.props.viewabilityConfigCallbackPairs,'Changing viewabilityConfigCallbackPairs on the fly is not supported'),this._checkProps(this.props)}},{key:"_checkProps",value:function(t){var n=t.getItem,s=t.getItemCount,o=t.horizontal,l=t.legacyImplementation,c=t.numColumns,p=t.columnWrapperStyle,f=t.onViewableItemsChanged,h=t.viewabilityConfigCallbackPairs;u(!n&&!s,'FlatList does not support custom data formats.'),c>1?u(!o,'numColumns does not support horizontal.'):u(!p,'columnWrapperStyle not supported for single column lists'),l&&(u(1===c,'Legacy list does not support multiple columns.'),this._hasWarnedLegacy||(console.warn("FlatList: Using legacyImplementation - some features not supported and performance may suffer"),this._hasWarnedLegacy=!0)),u(!(f&&h),"FlatList does not support setting both onViewableItemsChanged and viewabilityConfigCallbackPairs.")}},{key:"_pushMultiColumnViewable",value:function(t,n){var s=this.props,o=s.numColumns,l=s.keyExtractor;n.item.forEach(function(s,c){u(null!=n.index,'Missing index!');var p=n.index*o+c;t.push(babelHelpers.objectSpread({},n,{item:s,key:l(s,p),index:p}))})}},{key:"_createOnViewableItemsChanged",value:function(t){var n=this;return function(s){var o=n.props.numColumns;if(t)if(o>1){var l=[],u=[];s.viewableItems.forEach(function(t){return n._pushMultiColumnViewable(u,t)}),s.changed.forEach(function(t){return n._pushMultiColumnViewable(l,t)}),t({viewableItems:u,changed:l})}else t(s)}}},{key:"render",value:function(){return this.props.legacyImplementation?n.createElement(t,babelHelpers.extends({},this.props,{items:this.props.data,ref:this._captureRef})):n.createElement(o,babelHelpers.extends({},this.props,{renderItem:this._renderItem,getItem:this._getItem,getItemCount:this._getItemCount,keyExtractor:this._keyExtractor,ref:this._captureRef,viewabilityConfigCallbackPairs:this._virtualizedListPairs}))}}]),p})(n.PureComponent);p.defaultProps=c;var f=l.create({row:{flexDirection:'row'}});m.exports=p},216,[217,97,119,234,218,98,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),c=r(d[4]),l=(function(o){function s(){var o,l,p=this;babelHelpers.classCallCheck(this,s);for(var u=arguments.length,f=new Array(u),h=0;h<u;h++)f[h]=arguments[h];return(l=babelHelpers.possibleConstructorReturn(this,(o=babelHelpers.getPrototypeOf(s)).call.apply(o,[this].concat(f)))).state=l._computeState(l.props,{ds:new t.DataSource({rowHasChanged:function(t,n){return!0},sectionHeaderHasChanged:function(){return!0},getSectionHeaderData:function(t,n){return l.state.sectionHeaderData[n]}}),sectionHeaderData:{}}),l._captureRef=function(t){l._listRef=t},l._renderFooter=function(){return n.createElement(p.props.FooterComponent,{key:"$footer"})},l._renderRow=function(t,n,o,s){return l.props.renderItem({item:t,index:o})},l._renderSectionHeader=function(t,n){var o=l.props.renderSectionHeader;return c(o,'Must provide renderSectionHeader with sections prop'),o({section:t})},l._renderSeparator=function(t,o){return n.createElement(p.props.SeparatorComponent,{key:t+o})},l}return babelHelpers.inherits(s,o),babelHelpers.createClass(s,[{key:"scrollToEnd",value:function(t){throw new Error('scrollToEnd not supported in legacy ListView.')}},{key:"scrollToIndex",value:function(t){throw new Error('scrollToIndex not supported in legacy ListView.')}},{key:"scrollToItem",value:function(t){throw new Error('scrollToItem not supported in legacy ListView.')}},{key:"scrollToLocation",value:function(t){throw new Error('scrollToLocation not supported in legacy ListView.')}},{key:"scrollToOffset",value:function(t){var n=t.animated,o=t.offset;this._listRef.scrollTo(this.props.horizontal?{x:o,animated:n}:{y:o,animated:n})}},{key:"getListRef",value:function(){return this._listRef}},{key:"setNativeProps",value:function(t){this._listRef&&this._listRef.setNativeProps(t)}},{key:"UNSAFE_componentWillReceiveProps",value:function(t){var n=this;this.setState(function(o){return n._computeState(t,o)})}},{key:"render",value:function(){return n.createElement(t,babelHelpers.extends({},this.props,{dataSource:this.state.ds,ref:this._captureRef,renderRow:this._renderRow,renderFooter:this.props.FooterComponent&&this._renderFooter,renderSectionHeader:this.props.sections&&this._renderSectionHeader,renderSeparator:this.props.SeparatorComponent&&this._renderSeparator}))}},{key:"_computeState",value:function(t,n){var o={};if(t.sections){c(!t.items,'Cannot have both sections and items props.');var s={};return t.sections.forEach(function(t,n){var c='s'+n;s[c]=t.data,o[c]=t}),{ds:n.ds.cloneWithRowsAndSections(s),sectionHeaderData:o}}return c(!t.sections,'Cannot have both sections and items props.'),{ds:n.ds.cloneWithRows(t.items),sectionHeaderData:o}}}]),s})(n.Component);l.defaultProps={keyExtractor:function(t,n){return t.key||String(n)},renderScrollComponent:function(t){return t.onRefresh?n.createElement(s,babelHelpers.extends({},t,{refreshControl:n.createElement(o,{refreshing:t.refreshing,onRefresh:t.onRefresh})})):n.createElement(s,t)}},m.exports=l},217,[218,97,233,222,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]),o=(r(d[2]),r(d[3])),n=r(d[4]),s=r(d[5]).ScrollViewManager,l=r(d[6]),h=r(d[7]),c=r(d[8]),p=r(d[9]),u=r(d[10]),R=r(d[11]),w=r(d[12]),S=r(d[13]),_=r(d[14]),C=w({displayName:'ListView',_childFrames:[],_sentEndForContentLength:null,_scrollComponent:null,_prevRenderedRowsCount:0,_visibleRows:{},scrollProperties:{},mixins:[h.Mixin,p],statics:{DataSource:t},getMetrics:function(){return{contentLength:this.scrollProperties.contentLength,totalRows:this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount(),renderedRows:this.state.curRenderedRowsCount,visibleRows:Object.keys(this._visibleRows).length}},getScrollResponder:function(){if(this._scrollComponent&&this._scrollComponent.getScrollResponder)return this._scrollComponent.getScrollResponder()},getScrollableNode:function(){return this._scrollComponent&&this._scrollComponent.getScrollableNode?this._scrollComponent.getScrollableNode():n.findNodeHandle(this._scrollComponent)},scrollTo:function(){var t;this._scrollComponent&&this._scrollComponent.scrollTo&&(t=this._scrollComponent).scrollTo.apply(t,arguments)},scrollToEnd:function(t){this._scrollComponent&&(this._scrollComponent.scrollToEnd?this._scrollComponent.scrollToEnd(t):console.warn("The scroll component used by the ListView does not support scrollToEnd. Check the renderScrollComponent prop of your ListView."))},flashScrollIndicators:function(){this._scrollComponent&&this._scrollComponent.flashScrollIndicators&&this._scrollComponent.flashScrollIndicators()},setNativeProps:function(t){this._scrollComponent&&this._scrollComponent.setNativeProps(t)},getDefaultProps:function(){return{initialListSize:10,pageSize:1,renderScrollComponent:function(t){return o.createElement(l,t)},scrollRenderAheadDistance:1e3,onEndReachedThreshold:1e3,stickySectionHeadersEnabled:!1,stickyHeaderIndices:[]}},getInitialState:function(){return{curRenderedRowsCount:this.props.initialListSize,highlightedRow:{}}},getInnerViewNode:function(){return this._scrollComponent&&this._scrollComponent.getInnerViewNode()},UNSAFE_componentWillMount:function(){this.scrollProperties={visibleLength:null,contentLength:null,offset:0},this._childFrames=[],this._visibleRows={},this._prevRenderedRowsCount=0,this._sentEndForContentLength=null},componentDidMount:function(){var t=this;this.requestAnimationFrame(function(){t._measureAndUpdateScrollProps()})},UNSAFE_componentWillReceiveProps:function(t){var o=this;this.props.dataSource===t.dataSource&&this.props.initialListSize===t.initialListSize||this.setState(function(t,n){return o._prevRenderedRowsCount=0,{curRenderedRowsCount:Math.min(Math.max(t.curRenderedRowsCount,n.initialListSize),n.enableEmptySections?n.dataSource.getRowAndSectionCount():n.dataSource.getRowCount())}},function(){return o._renderMoreRowsIfNeeded()})},componentDidUpdate:function(){var t=this;this.requestAnimationFrame(function(){t._measureAndUpdateScrollProps()})},_onRowHighlighted:function(t,o){this.setState({highlightedRow:{sectionID:t,rowID:o}})},render:function(){for(var t=[],n=this.props.dataSource,s=n.rowIdentities,l=0,h=[],p=this.props.renderSectionHeader,w=this.props.renderHeader&&this.props.renderHeader(),S=this.props.renderFooter&&this.props.renderFooter(),_=w?1:0,C=0;C<s.length;C++){var f=n.sectionIdentities[C],v=s[C];if(0===v.length){if(void 0===this.props.enableEmptySections){r(d[15])(!1,"In next release empty section headers will be rendered. In this release you can use 'enableEmptySections' flag to render empty section headers.");continue}r(d[16])(this.props.enableEmptySections,"In next release 'enableEmptySections' flag will be deprecated, empty section headers will always be rendered. If empty section headers are not desirable their indices should be excluded from sectionIDs object. In this release 'enableEmptySections' may only have value 'true' to allow empty section headers rendering.")}if(p){var b=p(n.getSectionHeaderData(C),f);b&&(t.push(o.cloneElement(b,{key:'s_'+f})),this.props.stickySectionHeadersEnabled&&h.push(_),_++)}for(var E=0;E<v.length;E++){var y=v[E],L=f+'_'+y,I=l>=this._prevRenderedRowsCount&&n.rowShouldUpdate(C,E),P=o.createElement(c,{key:'r_'+L,shouldUpdate:!!I,render:this.props.renderRow.bind(null,n.getRowData(C,E),f,y,this._onRowHighlighted)});if(t.push(P),_++,this.props.renderSeparator&&(E!==v.length-1||C===s.length-1)){var F=this.state.highlightedRow.sectionID===f&&(this.state.highlightedRow.rowID===y||this.state.highlightedRow.rowID===v[E+1]),D=this.props.renderSeparator(f,y,F);D&&(t.push(o.createElement(u,{key:'s_'+L},D)),_++)}if(++l===this.state.curRenderedRowsCount)break}if(l>=this.state.curRenderedRowsCount)break}var H=this.props,N=H.renderScrollComponent,z=babelHelpers.objectWithoutProperties(H,["renderScrollComponent"]);return z.scrollEventThrottle||(z.scrollEventThrottle=50),void 0===z.removeClippedSubviews&&(z.removeClippedSubviews=!0),babelHelpers.extends(z,{onScroll:this._onScroll,stickyHeaderIndices:this.props.stickyHeaderIndices.concat(h),onKeyboardWillShow:void 0,onKeyboardWillHide:void 0,onKeyboardDidShow:void 0,onKeyboardDidHide:void 0}),R(N(z),{ref:this._setScrollComponentRef,onContentSizeChange:this._onContentSizeChange,onLayout:this._onLayout,DEPRECATED_sendUpdatedChildFrames:void 0!==typeof z.onChangeVisibleRows},w,t,S)},_measureAndUpdateScrollProps:function(){var t=this.getScrollResponder();t&&t.getInnerViewNode&&s&&s.calculateChildFrames&&s.calculateChildFrames(n.findNodeHandle(t),this._updateVisibleRows)},_setScrollComponentRef:function(t){this._scrollComponent=t},_onContentSizeChange:function(t,o){var n=this.props.horizontal?t:o;n!==this.scrollProperties.contentLength&&(this.scrollProperties.contentLength=n,this._updateVisibleRows(),this._renderMoreRowsIfNeeded()),this.props.onContentSizeChange&&this.props.onContentSizeChange(t,o)},_onLayout:function(t){var o=t.nativeEvent.layout,n=o.width,s=o.height,l=this.props.horizontal?n:s;l!==this.scrollProperties.visibleLength&&(this.scrollProperties.visibleLength=l,this._updateVisibleRows(),this._renderMoreRowsIfNeeded()),this.props.onLayout&&this.props.onLayout(t)},_maybeCallOnEndReached:function(t){return!!(this.props.onEndReached&&this.scrollProperties.contentLength!==this._sentEndForContentLength&&this._getDistanceFromEnd(this.scrollProperties)<this.props.onEndReachedThreshold&&this.state.curRenderedRowsCount===(this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount()))&&(this._sentEndForContentLength=this.scrollProperties.contentLength,this.props.onEndReached(t),!0)},_renderMoreRowsIfNeeded:function(){null!==this.scrollProperties.contentLength&&null!==this.scrollProperties.visibleLength&&this.state.curRenderedRowsCount!==(this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount())?this._getDistanceFromEnd(this.scrollProperties)<this.props.scrollRenderAheadDistance&&this._pageInNewRows():this._maybeCallOnEndReached()},_pageInNewRows:function(){var t=this;this.setState(function(o,n){var s=Math.min(o.curRenderedRowsCount+n.pageSize,n.enableEmptySections?n.dataSource.getRowAndSectionCount():n.dataSource.getRowCount());return t._prevRenderedRowsCount=o.curRenderedRowsCount,{curRenderedRowsCount:s}},function(){t._measureAndUpdateScrollProps(),t._prevRenderedRowsCount=t.state.curRenderedRowsCount})},_getDistanceFromEnd:function(t){return t.contentLength-t.visibleLength-t.offset},_updateVisibleRows:function(t){var o=this;if(this.props.onChangeVisibleRows){t&&t.forEach(function(t){o._childFrames[t.index]=_(t)});for(var n=!this.props.horizontal,s=this.props.dataSource,l=this.scrollProperties.offset,h=l+this.scrollProperties.visibleLength,c=s.rowIdentities,p=this.props.renderHeader&&this.props.renderHeader()?1:0,u=!1,R={},w=0;w<c.length;w++){var C=c[w];if(0!==C.length){var f=s.sectionIdentities[w];this.props.renderSectionHeader&&p++;var v=this._visibleRows[f];v||(v={});for(var b=0;b<C.length;b++){var E=C[b],y=this._childFrames[p];if(p++,!this.props.renderSeparator||b===C.length-1&&w!==c.length-1||p++,!y)break;var L=v[E],I=n?y.y:y.x,P=I+(n?y.height:y.width);if(!I&&!P||I===P)break;I>h||P<l?L&&(u=!0,delete v[E],R[f]||(R[f]={}),R[f][E]=!1):L||(u=!0,v[E]=!0,R[f]||(R[f]={}),R[f][E]=!0)}S(v)?this._visibleRows[f]&&delete this._visibleRows[f]:this._visibleRows[f]=v}}u&&this.props.onChangeVisibleRows(this._visibleRows,R)}},_onScroll:function(t){var o=!this.props.horizontal;this.scrollProperties.visibleLength=t.nativeEvent.layoutMeasurement[o?'height':'width'],this.scrollProperties.contentLength=t.nativeEvent.contentSize[o?'height':'width'],this.scrollProperties.offset=t.nativeEvent.contentOffset[o?'y':'x'],this._updateVisibleRows(t.nativeEvent.updatedChildFrames),this._maybeCallOnEndReached(t)||this._renderMoreRowsIfNeeded(),this.props.onEndReached&&this._getDistanceFromEnd(this.scrollProperties)>this.props.onEndReachedThreshold&&(this._sentEndForContentLength=null),this.props.onScroll&&this.props.onScroll(t)}});m.exports=C},218,[219,220,43,97,25,23,222,223,231,183,119,232,161,221,139,47,6]);
-__d(function(g,r,i,a,m,e,d){var l=r(d[0]),t=r(d[1]),n=(function(l){"use strict";function t(){return babelHelpers.classCallCheck(this,t),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(t).apply(this,arguments))}return babelHelpers.inherits(t,l),babelHelpers.createClass(t,[{key:"setNativeProps",value:function(l){}},{key:"flashScrollIndicators",value:function(){}},{key:"getScrollResponder",value:function(){}},{key:"getScrollableNode",value:function(){}},{key:"getMetrics",value:function(){}},{key:"scrollTo",value:function(){}},{key:"scrollToEnd",value:function(l){}}]),t})(l.Component);n.DataSource=t,m.exports=n},219,[97,220]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]);function o(t,n,s){return t[n][s]}function h(t,n){return t[n]}var c=(function(){function n(s){babelHelpers.classCallCheck(this,n),t(s&&'function'==typeof s.rowHasChanged,'Must provide a rowHasChanged function.'),this._rowHasChanged=s.rowHasChanged,this._getRowData=s.getRowData||o,this._sectionHeaderHasChanged=s.sectionHeaderHasChanged,this._getSectionHeaderData=s.getSectionHeaderData||h,this._dataBlob=null,this._dirtyRows=[],this._dirtySections=[],this._cachedRowCount=0,this.rowIdentities=[],this.sectionIdentities=[]}return babelHelpers.createClass(n,[{key:"cloneWithRows",value:function(t,n){var s=n?[babelHelpers.toConsumableArray(n)]:null;return this._sectionHeaderHasChanged||(this._sectionHeaderHasChanged=function(){return!1}),this.cloneWithRowsAndSections({s1:t},['s1'],s)}},{key:"cloneWithRowsAndSections",value:function(s,o,h){t('function'==typeof this._sectionHeaderHasChanged,'Must provide a sectionHeaderHasChanged function with section data.'),t(!o||!h||o.length===h.length,'row and section ids lengths must be the same');var c=new n({getRowData:this._getRowData,getSectionHeaderData:this._getSectionHeaderData,rowHasChanged:this._rowHasChanged,sectionHeaderHasChanged:this._sectionHeaderHasChanged});return c._dataBlob=s,c.sectionIdentities=o||Object.keys(s),h?c.rowIdentities=h:(c.rowIdentities=[],c.sectionIdentities.forEach(function(t){c.rowIdentities.push(Object.keys(s[t]))})),c._cachedRowCount=u(c.rowIdentities),c._calculateDirtyArrays(this._dataBlob,this.sectionIdentities,this.rowIdentities),c}},{key:"getRowCount",value:function(){return this._cachedRowCount}},{key:"getRowAndSectionCount",value:function(){return this._cachedRowCount+this.sectionIdentities.length}},{key:"rowShouldUpdate",value:function(t,n){var o=this._dirtyRows[t][n];return s(void 0!==o,'missing dirtyBit for section, row: '+t+', '+n),o}},{key:"getRowData",value:function(t,n){var o=this.sectionIdentities[t],h=this.rowIdentities[t][n];return s(void 0!==o&&void 0!==h,'rendering invalid section, row: '+t+', '+n),this._getRowData(this._dataBlob,o,h)}},{key:"getRowIDForFlatIndex",value:function(t){for(var n=t,s=0;s<this.sectionIdentities.length;s++){if(!(n>=this.rowIdentities[s].length))return this.rowIdentities[s][n];n-=this.rowIdentities[s].length}return null}},{key:"getSectionIDForFlatIndex",value:function(t){for(var n=t,s=0;s<this.sectionIdentities.length;s++){if(!(n>=this.rowIdentities[s].length))return this.sectionIdentities[s];n-=this.rowIdentities[s].length}return null}},{key:"getSectionLengths",value:function(){for(var t=[],n=0;n<this.sectionIdentities.length;n++)t.push(this.rowIdentities[n].length);return t}},{key:"sectionHeaderShouldUpdate",value:function(t){var n=this._dirtySections[t];return s(void 0!==n,'missing dirtyBit for section: '+t),n}},{key:"getSectionHeaderData",value:function(t){if(!this._getSectionHeaderData)return null;var n=this.sectionIdentities[t];return s(void 0!==n,'renderSection called on invalid section: '+t),this._getSectionHeaderData(this._dataBlob,n)}},{key:"_calculateDirtyArrays",value:function(t,n,o){for(var h,c=l(n),u={},w=0;w<o.length;w++){var _=n[w];s(!u[_],'SectionID appears more than once: '+_),u[_]=l(o[w])}this._dirtySections=[],this._dirtyRows=[];for(var f=0;f<this.sectionIdentities.length;f++){h=!c[_=this.sectionIdentities[f]];var v=this._sectionHeaderHasChanged;!h&&v&&(h=v(this._getSectionHeaderData(t,_),this._getSectionHeaderData(this._dataBlob,_))),this._dirtySections.push(!!h),this._dirtyRows[f]=[];for(var H=0;H<this.rowIdentities[f].length;H++){var y=this.rowIdentities[f][H];h=!c[_]||!u[_][y]||this._rowHasChanged(this._getRowData(t,_,y),this._getRowData(this._dataBlob,_,y)),this._dirtyRows[f].push(!!h)}}}}]),n})();function u(t){for(var n=0,s=0;s<t.length;s++){n+=t[s].length}return n}function l(t){if(n(t))return{};for(var o={},h=0;h<t.length;h++){var c=t[h];s(!o[c],'Value appears more than once in array: '+c),o[c]=!0}return o}m.exports=c},220,[6,221,47]);
-__d(function(g,r,i,a,m,e,d){'use strict';m.exports=function(t){if(Array.isArray(t))return 0===t.length;if('object'==typeof t){for(var n in t)return!1;return!0}return!t}},221,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t,n,o,s=r(d[0]),l=(r(d[1]),r(d[2])),c=r(d[3]),h=r(d[4]),p=r(d[5]),u=r(d[6]),f=r(d[7]),y=(r(d[8]),r(d[9])),S=r(d[10]),R=(r(d[11]),r(d[12])),_=r(d[13]),H=r(d[14]),v=(r(d[15]),r(d[16]));t=H('RCTScrollView'),o=H('AndroidHorizontalScrollView'),n=H('AndroidHorizontalScrollContentView');var w=y({displayName:'ScrollView',mixins:[h.Mixin],_scrollAnimatedValue:new s.Value(0),_scrollAnimatedValueAttachment:null,_stickyHeaderRefs:new Map,_headerLayoutYs:new Map,getInitialState:function(){return babelHelpers.objectSpread({},this.scrollResponderMixinGetInitialState(),{layoutHeight:null})},UNSAFE_componentWillMount:function(){this._scrollAnimatedValue=new s.Value(this.props.contentOffset?this.props.contentOffset.y:0),this._scrollAnimatedValue.setOffset(this.props.contentInset?this.props.contentInset.top:0),this._stickyHeaderRefs=new Map,this._headerLayoutYs=new Map},componentDidMount:function(){this._updateAnimatedNodeAttachment()},componentDidUpdate:function(){this._updateAnimatedNodeAttachment()},componentWillUnmount:function(){this._scrollAnimatedValueAttachment&&this._scrollAnimatedValueAttachment.detach()},setNativeProps:function(t){this._scrollViewRef&&this._scrollViewRef.setNativeProps(t)},getScrollResponder:function(){return this},getScrollableNode:function(){return c.findNodeHandle(this._scrollViewRef)},getInnerViewNode:function(){return c.findNodeHandle(this._innerViewRef)},scrollTo:function(t,n,o){if('number'==typeof t)console.warn("`scrollTo(y, x, animated)` is deprecated. Use `scrollTo({x: 5, y: 5, animated: true})` instead.");else{var s=t||{};n=s.x,t=s.y,o=s.animated}this.getScrollResponder().scrollResponderScrollTo({x:n||0,y:t||0,animated:!1!==o})},scrollToEnd:function(t){var n=!1!==(t&&t.animated);this.getScrollResponder().scrollResponderScrollToEnd({animated:n})},scrollWithoutAnimationTo:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0;console.warn('`scrollWithoutAnimationTo` is deprecated. Use `scrollTo` instead'),this.scrollTo({x:n,y:t,animated:!1})},flashScrollIndicators:function(){this.getScrollResponder().scrollResponderFlashScrollIndicators()},_getKeyForIndex:function(t,n){var o=n[t];return o&&o.key},_updateAnimatedNodeAttachment:function(){this._scrollAnimatedValueAttachment&&this._scrollAnimatedValueAttachment.detach(),this.props.stickyHeaderIndices&&this.props.stickyHeaderIndices.length>0&&(this._scrollAnimatedValueAttachment=s.attachNativeEvent(this._scrollViewRef,'onScroll',[{nativeEvent:{contentOffset:{y:this._scrollAnimatedValue}}}]))},_setStickyHeaderRef:function(t,n){n?this._stickyHeaderRefs.set(t,n):this._stickyHeaderRefs.delete(t)},_onStickyHeaderLayout:function(t,n,o){if(this.props.stickyHeaderIndices){var s=l.Children.toArray(this.props.children);if(o===this._getKeyForIndex(t,s)){var c=n.nativeEvent.layout.y;this._headerLayoutYs.set(o,c);var h=this.props.stickyHeaderIndices.indexOf(t),p=this.props.stickyHeaderIndices[h-1];if(null!=p){var u=this._stickyHeaderRefs.get(this._getKeyForIndex(p,s));u&&u.setNextHeaderY(c)}}}},_handleKeyDown:function(t){if(this.props.onKeyDown)this.props.onKeyDown(t);else t.nativeEvent.key},_handleScrollByKeyDown:function(t,n){var o=t.contentSize.width-t.layoutMeasurement.width,s=t.contentSize.height-t.layoutMeasurement.height;this.scrollTo({x:Math.max(0,Math.min(o,n.x)),y:Math.max(0,Math.min(s,n.y))})},_handleScroll:function(t){'on-drag'===this.props.keyboardDismissMode&&this.state.isTouching&&S(),this.scrollResponderHandleScroll(t)},_handleLayout:function(t){this.props.invertStickyHeaders&&this.setState({layoutHeight:t.nativeEvent.layout.height}),this.props.onLayout&&this.props.onLayout(t)},_handleContentOnLayout:function(t){var n=t.nativeEvent.layout,o=n.width,s=n.height;this.props.onContentSizeChange&&this.props.onContentSizeChange(o,s)},_scrollViewRef:null,_setScrollViewRef:function(t){this._scrollViewRef=t},_innerViewRef:null,_setInnerViewRef:function(t){this._innerViewRef=t},render:function(){var s,c,h=this;this.props.horizontal?(s=o,c=n):(s=t,c=f),R(void 0!==s,'ScrollViewClass must not be undefined'),R(void 0!==c,'ScrollContentContainerViewClass must not be undefined');var u=[this.props.horizontal&&V.contentContainerHorizontal,this.props.contentContainerStyle],y={};this.props.onContentSizeChange&&(y={onLayout:this._handleContentOnLayout});var S=this.props.stickyHeaderIndices,H=S&&S.length>0,w=H&&l.Children.toArray(this.props.children),A=H?w.map(function(t,n){var o=t?S.indexOf(n):-1;if(o>-1){var s=t.key,c=S[o+1];return l.createElement(p,{key:s,ref:function(t){return h._setStickyHeaderRef(s,t)},nextHeaderLayoutY:h._headerLayoutYs.get(h._getKeyForIndex(c,w)),onLayout:function(t){return h._onStickyHeaderLayout(n,t,s)},scrollAnimatedValue:h._scrollAnimatedValue,inverted:h.props.invertStickyHeaders,scrollViewHeight:h.state.layoutHeight},t)}return t}):this.props.children,T=l.createElement(c,babelHelpers.extends({},y,{ref:this._setInnerViewRef,style:u,removeClippedSubviews:!H&&this.props.removeClippedSubviews,collapsable:!1}),A),C=void 0!==this.props.alwaysBounceHorizontal?this.props.alwaysBounceHorizontal:this.props.horizontal,E=void 0!==this.props.alwaysBounceVertical?this.props.alwaysBounceVertical:!this.props.horizontal,x=!!this.props.DEPRECATED_sendUpdatedChildFrames,b=this.props.horizontal?V.baseHorizontal:V.baseVertical,k=babelHelpers.objectSpread({},this.props,{alwaysBounceHorizontal:C,alwaysBounceVertical:E,style:[b,this.props.style],onContentSizeChange:null,onKeyDown:this._handleKeyDown,onLayout:this._handleLayout,onMomentumScrollBegin:this.scrollResponderHandleMomentumScrollBegin,onMomentumScrollEnd:this.scrollResponderHandleMomentumScrollEnd,onResponderGrant:this.scrollResponderHandleResponderGrant,onResponderReject:this.scrollResponderHandleResponderReject,onResponderRelease:this.scrollResponderHandleResponderRelease,onResponderTerminate:this.scrollResponderHandleTerminate,onResponderTerminationRequest:this.scrollResponderHandleTerminationRequest,onScroll:this._handleScroll,onScrollBeginDrag:this.scrollResponderHandleScrollBeginDrag,onScrollEndDrag:this.scrollResponderHandleScrollEndDrag,onScrollShouldSetResponder:this.scrollResponderHandleScrollShouldSetResponder,onStartShouldSetResponder:this.scrollResponderHandleStartShouldSetResponder,onStartShouldSetResponderCapture:this.scrollResponderHandleStartShouldSetResponderCapture,onTouchEnd:this.scrollResponderHandleTouchEnd,onTouchMove:this.scrollResponderHandleTouchMove,onTouchStart:this.scrollResponderHandleTouchStart,onTouchCancel:this.scrollResponderHandleTouchCancel,scrollBarThumbImage:v(this.props.scrollBarThumbImage),scrollEventThrottle:H?1:this.props.scrollEventThrottle,sendMomentumEvents:!(!this.props.onMomentumScrollBegin&&!this.props.onMomentumScrollEnd),DEPRECATED_sendUpdatedChildFrames:x,pagingEnabled:this.props.pagingEnabled||null!=this.props.snapToInterval||null!=this.props.snapToOffsets}),M=this.props.decelerationRate;null!=M&&(k.decelerationRate=_(M));var I=this.props.refreshControl;return I?l.cloneElement(I,{style:k.style},l.createElement(s,babelHelpers.extends({},k,{style:b,ref:this._setScrollViewRef}),T)):l.createElement(s,babelHelpers.extends({},k,{ref:this._setScrollViewRef}),T)}}),V=u.create({baseVertical:{flexGrow:1,flexShrink:1,flexDirection:'column',overflow:'scroll'},baseHorizontal:{flexGrow:1,flexShrink:1,flexDirection:'row',overflow:'scroll'},contentContainerHorizontal:{flexDirection:'row'}});m.exports=w},222,[188,43,97,25,223,228,98,119,229,161,164,89,6,230,122,47,128]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),t=r(d[4]),c=r(d[5]),p=r(d[6]),h=r(d[7]),u=r(d[8]),S=r(d[9]),R=r(d[10]),T=r(d[11]).ScrollViewManager,b={Mixin:{mixins:[t.Mixin],scrollResponderMixinGetInitialState:function(){return{isTouching:!1,lastMomentumScrollBeginTime:0,lastMomentumScrollEndTime:0,observedScrollSinceBecomingResponder:!1,becameResponderWhileAnimating:!1}},scrollResponderHandleScrollShouldSetResponder:function(){return this.state.isTouching},scrollResponderHandleStartShouldSetResponder:function(o){var n=c.currentlyFocusedField();return'handled'===this.props.keyboardShouldPersistTaps&&null!=n&&o.target!==n},scrollResponderHandleStartShouldSetResponderCapture:function(o){if(this.scrollResponderIsAnimating())return!0;var n=c.currentlyFocusedField(),s=this.props.keyboardShouldPersistTaps;return!(s&&'never'!==s||null==n||c.isTextInput(o.target))},scrollResponderHandleResponderReject:function(){},scrollResponderHandleTerminationRequest:function(){return!this.state.observedScrollSinceBecomingResponder},scrollResponderHandleTouchEnd:function(o){var n=o.nativeEvent;this.state.isTouching=0!==n.touches.length,this.props.onTouchEnd&&this.props.onTouchEnd(o)},scrollResponderHandleTouchCancel:function(o){this.state.isTouching=!1,this.props.onTouchCancel&&this.props.onTouchCancel(o)},scrollResponderHandleResponderRelease:function(o){this.props.onResponderRelease&&this.props.onResponderRelease(o);var n=c.currentlyFocusedField();!0===this.props.keyboardShouldPersistTaps||'always'===this.props.keyboardShouldPersistTaps||null==n||o.target===n||this.state.observedScrollSinceBecomingResponder||this.state.becameResponderWhileAnimating||(this.props.onScrollResponderKeyboardDismissed&&this.props.onScrollResponderKeyboardDismissed(o),c.blurTextInput(n))},scrollResponderHandleScroll:function(o){this.state.observedScrollSinceBecomingResponder=!0,this.props.onScroll&&this.props.onScroll(o)},scrollResponderHandleResponderGrant:function(o){this.state.observedScrollSinceBecomingResponder=!1,this.props.onResponderGrant&&this.props.onResponderGrant(o),this.state.becameResponderWhileAnimating=this.scrollResponderIsAnimating()},scrollResponderHandleScrollBeginDrag:function(o){n.beginScroll(),this.props.onScrollBeginDrag&&this.props.onScrollBeginDrag(o)},scrollResponderHandleScrollEndDrag:function(o){var s=o.nativeEvent.velocity;this.scrollResponderIsAnimating()||s&&(0!==s.x||0!==s.y)||n.endScroll(),this.props.onScrollEndDrag&&this.props.onScrollEndDrag(o)},scrollResponderHandleMomentumScrollBegin:function(o){this.state.lastMomentumScrollBeginTime=S(),this.props.onMomentumScrollBegin&&this.props.onMomentumScrollBegin(o)},scrollResponderHandleMomentumScrollEnd:function(o){n.endScroll(),this.state.lastMomentumScrollEndTime=S(),this.props.onMomentumScrollEnd&&this.props.onMomentumScrollEnd(o)},scrollResponderHandleTouchStart:function(o){this.state.isTouching=!0,this.props.onTouchStart&&this.props.onTouchStart(o)},scrollResponderHandleTouchMove:function(o){this.props.onTouchMove&&this.props.onTouchMove(o)},scrollResponderIsAnimating:function(){return S()-this.state.lastMomentumScrollEndTime<16||this.state.lastMomentumScrollEndTime<this.state.lastMomentumScrollBeginTime},scrollResponderGetScrollableNode:function(){return this.getScrollableNode?this.getScrollableNode():l.findNodeHandle(this)},scrollResponderScrollTo:function(o,n,s){if('number'==typeof o)console.warn('`scrollResponderScrollTo(x, y, animated)` is deprecated. Use `scrollResponderScrollTo({x: 5, y: 5, animated: true})` instead.');else{var l=o||{};o=l.x,n=l.y,s=l.animated}p.dispatchViewManagerCommand(u(this.scrollResponderGetScrollableNode()),p.RCTScrollView.Commands.scrollTo,[o||0,n||0,!1!==s])},scrollResponderScrollToEnd:function(o){var n=!1!==(o&&o.animated);p.dispatchViewManagerCommand(this.scrollResponderGetScrollableNode(),p.RCTScrollView.Commands.scrollToEnd,[n])},scrollResponderScrollWithoutAnimationTo:function(o,n){console.warn('`scrollResponderScrollWithoutAnimationTo` is deprecated. Use `scrollResponderScrollTo` instead'),this.scrollResponderScrollTo({x:o,y:n,animated:!1})},scrollResponderZoomTo:function(o,n){h(T&&T.zoomToRect,'zoomToRect is not implemented'),'animated'in o?(n=o.animated,delete o.animated):void 0!==n&&console.warn('`scrollResponderZoomTo` `animated` argument is deprecated. Use `options.animated` instead'),T.zoomToRect(this.scrollResponderGetScrollableNode(),o,!1!==n)},scrollResponderFlashScrollIndicators:function(){p.dispatchViewManagerCommand(this.scrollResponderGetScrollableNode(),p.RCTScrollView.Commands.flashScrollIndicators,[])},scrollResponderScrollNativeHandleToKeyboard:function(o,n,s){this.additionalScrollOffset=n||0,this.preventNegativeScrollOffset=!!s,p.measureLayout(o,l.findNodeHandle(this.getInnerViewNode()),this.scrollResponderTextInputFocusError,this.scrollResponderInputMeasureAndScrollToKeyboard)},scrollResponderInputMeasureAndScrollToKeyboard:function(n,s,l,t){var c=o.get('window').height;this.keyboardWillOpenTo&&(c=this.keyboardWillOpenTo.endCoordinates.screenY);var p=s-c+t+this.additionalScrollOffset;this.preventNegativeScrollOffset&&(p=Math.max(0,p)),this.scrollResponderScrollTo({x:0,y:p,animated:!0}),this.additionalOffset=0,this.preventNegativeScrollOffset=!1},scrollResponderTextInputFocusError:function(o){console.error('Error measuring text field: ',o)},UNSAFE_componentWillMount:function(){var o=this.props.keyboardShouldPersistTaps;R('boolean'!=typeof o,"'keyboardShouldPersistTaps={"+o+"}' is deprecated. Use 'keyboardShouldPersistTaps=\""+(o?'always':'never')+"\"' instead"),this.keyboardWillOpenTo=null,this.additionalScrollOffset=0,this.addListenerOn(s,'keyboardWillShow',this.scrollResponderKeyboardWillShow),this.addListenerOn(s,'keyboardWillHide',this.scrollResponderKeyboardWillHide),this.addListenerOn(s,'keyboardDidShow',this.scrollResponderKeyboardDidShow),this.addListenerOn(s,'keyboardDidHide',this.scrollResponderKeyboardDidHide)},scrollResponderKeyboardWillShow:function(o){this.keyboardWillOpenTo=o,this.props.onKeyboardWillShow&&this.props.onKeyboardWillShow(o)},scrollResponderKeyboardWillHide:function(o){this.keyboardWillOpenTo=null,this.props.onKeyboardWillHide&&this.props.onKeyboardWillHide(o)},scrollResponderKeyboardDidShow:function(o){o&&(this.keyboardWillOpenTo=o),this.props.onKeyboardDidShow&&this.props.onKeyboardDidShow(o)},scrollResponderKeyboardDidHide:function(o){this.keyboardWillOpenTo=null,this.props.onKeyboardDidHide&&this.props.onKeyboardDidHide(o)}}};m.exports=b},223,[100,224,225,25,227,90,83,6,148,44,47,23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n={setGlobalOptions:function(n){if(void 0!==n.debug&&o(t.FrameRateLogger,'Trying to debug FrameRateLogger without the native module!'),t.FrameRateLogger){var c={debug:!!n.debug,reportStackTraces:!!n.reportStackTraces};Object.freeze(c),Object.seal(c),t.FrameRateLogger.setGlobalOptions(c)}},setContext:function(o){t.FrameRateLogger&&t.FrameRateLogger.setContext(o)},beginScroll:function(){t.FrameRateLogger&&t.FrameRateLogger.beginScroll()},endScroll:function(){t.FrameRateLogger&&t.FrameRateLogger.endScroll()}};m.exports=n},224,[23,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),t=r(d[1]),n=r(d[2]),u=r(d[3]).KeyboardObserver,s=r(d[4]),c={addListener:function(o,n){t(!1,'Dummy method used for documentation')},removeListener:function(o,n){t(!1,'Dummy method used for documentation')},removeAllListeners:function(o){t(!1,'Dummy method used for documentation')},dismiss:function(){t(!1,'Dummy method used for documentation')},scheduleLayoutAnimation:function(o){t(!1,'Dummy method used for documentation')}};(c=new n(u)).dismiss=s,c.scheduleLayoutAnimation=function(t){var n=t.duration,u=t.easing;n&&o.configureNext({duration:n,update:{duration:n,type:u&&o.Types[u]||'keyboard'}})},m.exports=c},225,[226,6,55,23,164]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),p=r(d[2]),s=n.checkPropTypes,o=p({spring:!0,linear:!0,easeInEaseOut:!0,easeIn:!0,easeOut:!0,keyboard:!0}),u=p({opacity:!0,scaleX:!0,scaleY:!0,scaleXY:!0}),c=n.shape({duration:n.number,delay:n.number,springDamping:n.number,initialVelocity:n.number,type:n.oneOf(Object.keys(o)).isRequired,property:n.oneOf(Object.keys(u))}),y=n.shape({duration:n.number.isRequired,create:c,update:c,delete:c});function l(n,p){t.configureNextLayoutAnimation(n,p||function(){},function(){})}function f(n,t,p){return{duration:n,create:{type:t,property:p},update:{type:t},delete:{type:t,property:p}}}var b={easeInEaseOut:f(300,o.easeInEaseOut,u.opacity),linear:f(500,o.linear,u.opacity),spring:{duration:700,create:{type:o.linear,property:u.opacity},update:{type:o.spring,springDamping:.4},delete:{type:o.linear,property:u.opacity}}},O={configureNext:l,create:f,Types:o,Properties:u,checkConfig:function(n,t,p){s({config:y},{config:n},t,p)},Presets:b,easeInEaseOut:l.bind(null,b.easeInEaseOut),linear:l.bind(null,b.linear),spring:l.bind(null,b.spring)};m.exports=O},226,[94,83,107]);
-__d(function(g,r,i,a,m,e,d){'use strict';var s={Mixin:{UNSAFE_componentWillMount:function(){this._subscribableSubscriptions=[]},componentWillUnmount:function(){this._subscribableSubscriptions&&this._subscribableSubscriptions.forEach(function(s){return s.remove()}),this._subscribableSubscriptions=null},addListenerOn:function(s,n,t,u){this._subscribableSubscriptions.push(s.addListener(n,t,u))}}};m.exports=s},227,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),s=r(d[2]),n=r(d[3]),l=t.createAnimatedComponent(n),u=(function(t){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var l=arguments.length,u=new Array(l),p=0;p<l;p++)u[p]=arguments[p];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(u)))).state={measured:!1,layoutY:0,layoutHeight:0,nextHeaderLayoutY:n.props.nextHeaderLayoutY},n._onLayout=function(t){n.setState({measured:!0,layoutY:t.nativeEvent.layout.y,layoutHeight:t.nativeEvent.layout.height}),n.props.onLayout(t);var s=o.Children.only(n.props.children);s.props.onLayout&&s.props.onLayout(t)},n}return babelHelpers.inherits(s,t),babelHelpers.createClass(s,[{key:"setNextHeaderY",value:function(t){this.setState({nextHeaderLayoutY:t})}},{key:"render",value:function(){var t=this.props,s=t.inverted,n=t.scrollViewHeight,u=this.state,h=u.measured,y=u.layoutHeight,c=u.layoutY,v=u.nextHeaderLayoutY,f=[-1,0],H=[0,0];if(h)if(s){if(null!=n){var b=c+y-n;if(b>0){f.push(b),H.push(0),f.push(b+1),H.push(1);var L=(v||0)-y-n;L>b&&(f.push(L,L+1),H.push(L-b,L-b))}}}else{f.push(c),H.push(0);var Y=(v||0)-y;Y>=c?(f.push(Y,Y+1),H.push(Y-c,Y-c)):(f.push(c+1),H.push(1))}var x=this.props.scrollAnimatedValue.interpolate({inputRange:f,outputRange:H}),C=o.Children.only(this.props.children);return o.createElement(l,{collapsable:!1,onLayout:this._onLayout,style:[C.props.style,p.header,{transform:[{translateY:x}]}]},o.cloneElement(C,{style:p.fill,onLayout:void 0}))}}]),s})(o.Component),p=s.create({header:{zIndex:10},fill:{flex:1}});m.exports=u},228,[188,97,98,119]);
-__d(function(g,r,i,a,m,e,d){var l=(function(l){"use strict";function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,l),babelHelpers.createClass(o,[{key:"scrollTo",value:function(l,o,n){}},{key:"flashScrollIndicators",value:function(){}},{key:"scrollToEnd",value:function(l){}},{key:"scrollWithoutAnimationTo",value:function(){arguments.length>0&&void 0!==arguments[0]&&arguments[0],arguments.length>1&&void 0!==arguments[1]&&arguments[1]}},{key:"getScrollResponder",value:function(){}},{key:"getScrollableNode",value:function(){}},{key:"getInnerViewNode",value:function(){}},{key:"scrollResponderScrollNativeHandleToKeyboard",value:function(l,o,n){}},{key:"scrollResponderScrollTo",value:function(l,o,n){}}]),o})(r(d[0]).NativeComponent);m.exports=l},229,[25]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);m.exports=function(t){return'normal'===t?.985:'fast'===t?.9:t}},230,[43]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=(function(t){function s(){return babelHelpers.classCallCheck(this,s),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).apply(this,arguments))}return babelHelpers.inherits(s,t),babelHelpers.createClass(s,[{key:"shouldComponentUpdate",value:function(t){return t.shouldUpdate}},{key:"render",value:function(){return this.props.render()}}]),s})(t.Component);n.propTypes={shouldUpdate:s.bool.isRequired,render:s.func.isRequired},m.exports=n},231,[97,94]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]);m.exports=function(t,l){for(var c=l.ref,o=t.ref,p=arguments.length,f=new Array(p>2?p-2:0),u=2;u<p;u++)f[u-2]=arguments[u];return null==o||null==c?n.cloneElement.apply(n,[t,l].concat(f)):'function'!=typeof o?n.cloneElement.apply(n,[t,l].concat(f)):n.cloneElement.apply(n,[t,babelHelpers.objectSpread({},l,{ref:function(n){c(n),o(n)}})].concat(f))}},232,[85]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var s=r(d[1]),t=(r(d[2]).NativeComponent,r(d[3])),n=r(d[4]),o=r(d[5]).AndroidSwipeRefreshLayout,h=o?o.Constants:{SIZE:{}},p=t('AndroidSwipeRefreshLayout'),f=(function(t){function o(){var s,t;babelHelpers.classCallCheck(this,o);for(var n=arguments.length,h=new Array(n),p=0;p<n;p++)h[p]=arguments[p];return(t=babelHelpers.possibleConstructorReturn(this,(s=babelHelpers.getPrototypeOf(o)).call.apply(s,[this].concat(h))))._nativeRef=null,t._lastNativeRefreshing=!1,t._onRefresh=function(){t._lastNativeRefreshing=!0,t.props.onRefresh&&t.props.onRefresh(),t.forceUpdate()},t}return babelHelpers.inherits(o,t),babelHelpers.createClass(o,[{key:"componentDidMount",value:function(){this._lastNativeRefreshing=this.props.refreshing}},{key:"componentDidUpdate",value:function(s){this.props.refreshing!==s.refreshing?this._lastNativeRefreshing=this.props.refreshing:this.props.refreshing!==this._lastNativeRefreshing&&(n(this._nativeRef).setNativeProps({refreshing:this.props.refreshing}),this._lastNativeRefreshing=this.props.refreshing)}},{key:"render",value:function(){var t=this;return s.createElement(p,babelHelpers.extends({},this.props,{ref:function(s){t._nativeRef=s},onRefresh:this._onRefresh}))}}]),o})(s.Component);f.SIZE=h.SIZE,m.exports=f},233,[43,97,25,122,148,83]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=(r(d[2]),r(d[3])),n=r(d[4]),l=r(d[5]),c=r(d[6]),h=r(d[7]),p=r(d[8]),u=r(d[9]),f=r(d[10]),_=r(d[11]),y=(r(d[12]),r(d[13])),v=r(d[14]),C=(r(d[15]),r(d[16]).computeWindowedRenderLimits),b=!1,L='',S=(function(o){function S(o,l){var p;babelHelpers.classCallCheck(this,S),(p=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(S).call(this,o,l))).ensureItemAtIndexIsVisible=function(t){var s=p._getFrameMetricsApprox(t),o=p._scrollMetrics.offset,n=o+p._scrollMetrics.visibleLength,l=p._scrollMetrics.contentLength,c=s.offset+s.length;if(c>n){var h=Math.min(l,o+(c-n));p.scrollToOffset({offset:h})}else if(s.offset<o){var u=Math.max(0,o-s.length);p.scrollToOffset({offset:u})}},p._getScrollMetrics=function(){return p._scrollMetrics},p._getOutermostParentListRef=function(){return p._isNestedWithSameOrientation()?p.context.virtualizedList.getOutermostParentListRef():babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(p))},p._getNestedChildState=function(t){var s=p._nestedChildLists.get(t);return s&&s.state},p._registerAsNestedChild=function(t){var s=p._cellKeysToChildListKeys.get(t.cellKey)||new Set;s.add(t.key),p._cellKeysToChildListKeys.set(t.cellKey,s);var o=p._nestedChildLists.get(t.key);v(!(o&&null!==o.ref),"A VirtualizedList contains a cell which itself contains more than one VirtualizedList of the same orientation as the parent list. You must pass a unique listKey prop to each sibling list."),p._nestedChildLists.set(t.key,{ref:t.ref,state:null}),p._hasInteracted&&t.ref.recordInteraction()},p._unregisterAsNestedChild=function(t){p._nestedChildLists.set(t.key,{ref:null,state:t.state})},p._onUpdateSeparators=function(t,s){t.forEach(function(t){var o=null!=t&&p._cellRefs[t];o&&o.updateSeparatorProps(s)})},p._averageCellLength=0,p._cellKeysToChildListKeys=new Map,p._cellRefs={},p._frames={},p._footerLength=0,p._hasDataChangedSinceEndReached=!0,p._hasInteracted=!1,p._hasMore=!1,p._hasWarned={},p._highestMeasuredFrameIndex=0,p._headerLength=0,p._indicesToKeys=new Map,p._hasDoneInitialScroll=!1,p._nestedChildLists=new Map,p._offsetFromParentVirtualizedList=0,p._prevParentOffset=0,p._scrollMetrics={contentLength:0,dOffset:0,dt:10,offset:0,timestamp:0,velocity:0,visibleLength:0},p._scrollRef=null,p._sentEndForContentLength=0,p._totalCellLength=0,p._totalCellsMeasured=0,p._viewabilityTuples=[],p._captureScrollRef=function(t){p._scrollRef=t},p._defaultRenderScrollComponent=function(t){var s=p.props.onKeyDown;s||(s=p.props.enableSelectionOnKeyPress?p._handleKeyDown:null);var o=t.onRefresh;return p._isNestedWithSameOrientation()?n.createElement(f,t):o?(v('boolean'==typeof t.refreshing,'`refreshing` prop must be set as a boolean in order to use `onRefresh`, but got `'+JSON.stringify(t.refreshing)+'`'),n.createElement(h,babelHelpers.extends({},t,{onKeyDown:s,refreshControl:null==t.refreshControl?n.createElement(c,{refreshing:t.refreshing,onRefresh:o,progressViewOffset:t.progressViewOffset}):t.refreshControl}))):n.createElement(h,babelHelpers.extends({},t,{onKeyDown:s}))},p._onCellUnmount=function(t){var s=p._frames[t];s&&(p._frames[t]=babelHelpers.objectSpread({},s,{inLayout:!1}))},p._onLayout=function(t){p._isNestedWithSameOrientation()?p.measureLayoutRelativeToContainingList():p._scrollMetrics.visibleLength=p._selectLength(t.nativeEvent.layout),p.props.onLayout&&p.props.onLayout(t),p._scheduleCellsToRenderUpdate(),p._maybeCallOnEndReached()},p._onLayoutEmpty=function(t){p.props.onLayout&&p.props.onLayout(t)},p._onLayoutFooter=function(t){p._footerLength=p._selectLength(t.nativeEvent.layout)},p._onLayoutHeader=function(t){p._headerLength=p._selectLength(t.nativeEvent.layout)},p._selectRowAboveIndex=function(t){var s=t>0?t-1:t;return p.setState(function(t){return{selectedRowIndex:s}}),s},p._selectRowBelowIndex=function(t){if(p.props.getItemCount){var s=p.props.data,o=t<p.props.getItemCount(s)-1?t+1:t;return p.setState(function(t){return{selectedRowIndex:o}}),o}},p._handleKeyDown=function(t){p.props.onKeyDown&&p.props.onKeyDown(t)},p._onContentSizeChange=function(t,s){t>0&&s>0&&null!=p.props.initialScrollIndex&&p.props.initialScrollIndex>0&&!p._hasDoneInitialScroll&&(p.scrollToIndex({animated:!1,index:p.props.initialScrollIndex}),p._hasDoneInitialScroll=!0),p.props.onContentSizeChange&&p.props.onContentSizeChange(t,s),p._scrollMetrics.contentLength=p._selectLength({height:s,width:t}),p._scheduleCellsToRenderUpdate(),p._maybeCallOnEndReached()},p._convertParentScrollMetrics=function(t){var s=t.offset-p._offsetFromParentVirtualizedList,o=t.visibleLength,n=s-p._scrollMetrics.offset;return{visibleLength:o,contentLength:p._scrollMetrics.contentLength,offset:s,dOffset:n}},p._onScroll=function(t){p._nestedChildLists.forEach(function(s){s.ref&&s.ref._onScroll(t)}),p.props.onScroll&&p.props.onScroll(t);var s=t.timeStamp,o=p._selectLength(t.nativeEvent.layoutMeasurement),n=p._selectLength(t.nativeEvent.contentSize),l=p._selectOffset(t.nativeEvent.contentOffset),c=l-p._scrollMetrics.offset;if(p._isNestedWithSameOrientation()){if(0===p._scrollMetrics.contentLength)return;var h=p._convertParentScrollMetrics({visibleLength:o,offset:l});o=h.visibleLength,n=h.contentLength,l=h.offset,c=h.dOffset}var u=p._scrollMetrics.timestamp?Math.max(1,s-p._scrollMetrics.timestamp):1,f=c/u;u>500&&p._scrollMetrics.dt>500&&n>5*o&&!p._hasWarned.perf&&(y("VirtualizedList: You have a large list that is slow to update - make sure your renderItem function renders components that follow React performance best practices like PureComponent, shouldComponentUpdate, etc.",{dt:u,prevDt:p._scrollMetrics.dt,contentLength:n}),p._hasWarned.perf=!0),p._scrollMetrics={contentLength:n,dt:u,dOffset:c,offset:l,timestamp:s,velocity:f,visibleLength:o},p._updateViewableItems(p.props.data),p.props&&(p._maybeCallOnEndReached(),0!==f&&p._fillRateHelper.activate(),p._computeBlankness(),p._scheduleCellsToRenderUpdate())},p._onScrollBeginDrag=function(t){p._nestedChildLists.forEach(function(s){s.ref&&s.ref._onScrollBeginDrag(t)}),p._viewabilityTuples.forEach(function(t){t.viewabilityHelper.recordInteraction()}),p._hasInteracted=!0,p.props.onScrollBeginDrag&&p.props.onScrollBeginDrag(t)},p._onScrollEndDrag=function(t){var s=t.nativeEvent.velocity;s&&(p._scrollMetrics.velocity=p._selectOffset(s)),p._computeBlankness(),p.props.onScrollEndDrag&&p.props.onScrollEndDrag(t)},p._onMomentumScrollEnd=function(t){p._scrollMetrics.velocity=0,p._computeBlankness(),p.props.onMomentumScrollEnd&&p.props.onMomentumScrollEnd(t)},p._updateCellsToRender=function(){var t=p.props,s=t.data,o=t.getItemCount,n=t.onEndReachedThreshold,l=p._isVirtualizationDisabled();p._updateViewableItems(s),s&&p.setState(function(t){var c;if(l){var h=p._scrollMetrics,u=h.contentLength,f=h.offset,_=h.visibleLength,y=u-_-f<n*_?p.props.maxToRenderPerBatch:0;c={first:0,last:Math.min(t.last+y,o(s)-1)}}else p._scrollMetrics.visibleLength&&(p.props.initialScrollIndex&&!p._scrollMetrics.offset||(c=C(p.props,t,p._getFrameMetricsApprox,p._scrollMetrics)));if(c&&p._nestedChildLists.size>0)for(var v=c.first,b=c.last,L=v;L<=b;L++){var S=p._indicesToKeys.get(L),M=S&&p._cellKeysToChildListKeys.get(S);if(M){var x=!1,I=M,k=Array.isArray(I),R=0;for(I=k?I:I["function"==typeof Symbol&&"function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var w;if(k){if(R>=I.length)break;w=I[R++]}else{if((R=I.next()).done)break;w=R.value}var E=w,T=p._nestedChildLists.get(E);if(T&&T.ref&&T.ref.hasMore()){x=!0;break}}if(x){c.last=L;break}}}return c})},p._createViewToken=function(t,s){var o=p.props,n=o.data,l=o.getItem,c=o.keyExtractor,h=l(n,t);return{index:t,item:h,key:c(h,t),isViewable:s}},p._getFrameMetricsApprox=function(t){var s=p._getFrameMetrics(t);if(s&&s.index===t)return s;var o=p.props.getItemLayout;return v(!o,'Should not have to estimate frames when a measurement metrics function is provided'),{length:p._averageCellLength,offset:p._averageCellLength*t}},p._getFrameMetrics=function(t){var s=p.props,o=s.data,n=s.getItem,l=s.getItemCount,c=s.getItemLayout,h=s.keyExtractor;v(l(o)>t,'Tried to get frame for out of range index '+t);var u=n(o,t),f=u&&p._frames[h(u,t)];return f&&f.index===t||c&&(f=c(o,t)),f},v(!o.onScroll||!o.onScroll.__isNative,"Components based on VirtualizedList must be wrapped with Animated.createAnimatedComponent to support native onScroll events with useNativeDriver"),v(o.windowSize>0,'VirtualizedList: The windowSize prop must be present and set to a value greater than 0.'),p._fillRateHelper=new s(p._getFrameMetrics),p._updateCellsToRenderBatcher=new t(p._updateCellsToRender,p.props.updateCellsBatchingPeriod),p.props.viewabilityConfigCallbackPairs?p._viewabilityTuples=p.props.viewabilityConfigCallbackPairs.map(function(t){return{viewabilityHelper:new _(t.viewabilityConfig),onViewableItemsChanged:t.onViewableItemsChanged}}):p.props.onViewableItemsChanged&&p._viewabilityTuples.push({viewabilityHelper:new _(p.props.viewabilityConfig),onViewableItemsChanged:p.props.onViewableItemsChanged});var u={first:p.props.initialScrollIndex||0,last:Math.min(p.props.getItemCount(p.props.data),(p.props.initialScrollIndex||0)+p.props.initialNumToRender)-1};if(p._isNestedWithSameOrientation()){var b=p.context.virtualizedList.getNestedChildState(p.props.listKey||p._getCellKey());b&&(u=b,p.state=b,p._frames=b.frames)}return p.state=u,p}return babelHelpers.inherits(S,o),babelHelpers.createClass(S,[{key:"scrollToEnd",value:function(t){var s=!t||t.animated,o=this.props.getItemCount(this.props.data)-1,n=this._getFrameMetricsApprox(o),l=Math.max(0,n.offset+n.length+this._footerLength-this._scrollMetrics.visibleLength);this._scrollRef.scrollTo(this.props.horizontal?{x:l,animated:s}:{y:l,animated:s})}},{key:"scrollToIndex",value:function(t){var s=this.props,o=s.data,n=s.horizontal,l=s.getItemCount,c=s.getItemLayout,h=s.onScrollToIndexFailed,p=t.animated,u=t.index,f=t.viewOffset,_=t.viewPosition;if(v(u>=0&&u<l(o),"scrollToIndex out of range: "+u+" vs "+(l(o)-1)),!c&&u>this._highestMeasuredFrameIndex)return v(!!h,"scrollToIndex should be used in conjunction with getItemLayout or onScrollToIndexFailed, otherwise there is no way to know the location of offscreen indices or handle failures."),void h({averageItemLength:this._averageCellLength,highestMeasuredFrameIndex:this._highestMeasuredFrameIndex,index:u});var y=this._getFrameMetricsApprox(u),C=Math.max(0,y.offset-(_||0)*(this._scrollMetrics.visibleLength-y.length))-(f||0);this._scrollRef.scrollTo(n?{x:C,animated:p}:{y:C,animated:p})}},{key:"scrollToItem",value:function(t){for(var s=t.item,o=this.props,n=o.data,l=o.getItem,c=(0,o.getItemCount)(n),h=0;h<c;h++)if(l(n,h)===s){this.scrollToIndex(babelHelpers.objectSpread({},t,{index:h}));break}}},{key:"scrollToOffset",value:function(t){var s=t.animated,o=t.offset;this._scrollRef.scrollTo(this.props.horizontal?{x:o,animated:s}:{y:o,animated:s})}},{key:"recordInteraction",value:function(){this._nestedChildLists.forEach(function(t){t.ref&&t.ref.recordInteraction()}),this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.recordInteraction()}),this._updateViewableItems(this.props.data)}},{key:"flashScrollIndicators",value:function(){this._scrollRef.flashScrollIndicators()}},{key:"getScrollResponder",value:function(){if(this._scrollRef&&this._scrollRef.getScrollResponder)return this._scrollRef.getScrollResponder()}},{key:"getScrollableNode",value:function(){return this._scrollRef&&this._scrollRef.getScrollableNode?this._scrollRef.getScrollableNode():l.findNodeHandle(this._scrollRef)}},{key:"setNativeProps",value:function(t){this._scrollRef&&this._scrollRef.setNativeProps(t)}},{key:"getChildContext",value:function(){return{virtualizedList:{getScrollMetrics:this._getScrollMetrics,horizontal:this.props.horizontal,getOutermostParentListRef:this._getOutermostParentListRef,getNestedChildState:this._getNestedChildState,registerAsNestedChild:this._registerAsNestedChild,unregisterAsNestedChild:this._unregisterAsNestedChild}}}},{key:"_getCellKey",value:function(){return this.context.virtualizedCell&&this.context.virtualizedCell.cellKey||'rootList'}},{key:"hasMore",value:function(){return this._hasMore}}]),babelHelpers.createClass(S,[{key:"componentDidMount",value:function(){this._isNestedWithSameOrientation()&&this.context.virtualizedList.registerAsNestedChild({cellKey:this._getCellKey(),key:this.props.listKey||this._getCellKey(),ref:this})}},{key:"componentWillUnmount",value:function(){this._isNestedWithSameOrientation()&&this.context.virtualizedList.unregisterAsNestedChild({key:this.props.listKey||this._getCellKey(),state:{first:this.state.first,last:this.state.last,frames:this._frames}}),this._updateViewableItems(null),this._updateCellsToRenderBatcher.dispose({abort:!0}),this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.dispose()}),this._fillRateHelper.deactivateAndFlush()}},{key:"_pushCells",value:function(t,s,o,l,c,h){var p,u=this,f=this.props,_=f.CellRendererComponent,y=f.ItemSeparatorComponent,v=f.data,C=f.getItem,b=f.getItemCount,L=f.horizontal,S=f.keyExtractor,x=this.props.ListHeaderComponent?1:0,I=b(v)-1;c=Math.min(I,c);for(var k=function(l){var c=C(v,l),f=S(c,l);u._indicesToKeys.set(l,f),o.has(l+x)&&s.push(t.length),t.push(n.createElement(M,{CellRendererComponent:_,ItemSeparatorComponent:l<I?y:void 0,cellKey:f,fillRateHelper:u._fillRateHelper,horizontal:L,index:l,inversionStyle:h,item:c,isSelected:u.state.selectedRowIndex==l,key:f,prevCellKey:p,onUpdateSeparators:u._onUpdateSeparators,onLayout:function(t){return u._onCellLayout(t,f,l)},onUnmount:u._onCellUnmount,parentProps:u.props,ref:function(t){u._cellRefs[f]=t}})),p=f},R=l;R<=c;R++)k(R)}},{key:"_isVirtualizationDisabled",value:function(){return this.props.disableVirtualization}},{key:"_isNestedWithSameOrientation",value:function(){var t=this.context.virtualizedList;return!(!t||!!t.horizontal!=!!this.props.horizontal)}},{key:"render",value:function(){var t=this,s=this.props,o=s.ListEmptyComponent,l=s.ListFooterComponent,c=s.ListHeaderComponent,h=this.props,u=h.data,_=h.horizontal,y=this._isVirtualizationDisabled(),v=this.props.inverted?this.props.horizontal?I.horizontallyInverted:I.verticallyInverted:null,C=[],S=new Set(this.props.stickyHeaderIndices),M=[];if(c){S.has(0)&&M.push(0);var k=n.isValidElement(c)?c:n.createElement(c,null);C.push(n.createElement(x,{cellKey:this._getCellKey()+'-header',key:"$header"},n.createElement(f,{onLayout:this._onLayoutHeader,style:p.compose(v,this.props.ListHeaderComponentStyle)},k)))}var R=this.props.getItemCount(u);if(R>0){b=!1,L='';var w=_?'width':'height',E=this.props.initialScrollIndex?-1:this.props.initialNumToRender-1,T=this.state,z=T.first,H=T.last;this._pushCells(C,M,S,0,E,v);var K=Math.max(E+1,z);if(!y&&z>E+1){var P=!1;if(S.size>0)for(var F=c?1:0,O=K-1;O>E;O--)if(S.has(O+F)){var N=this._getFrameMetricsApprox(E),D=this._getFrameMetricsApprox(O),A=D.offset-N.offset;C.push(n.createElement(f,{key:"$sticky_lead",style:babelHelpers.defineProperty({},w,A)})),this._pushCells(C,M,S,O,O,v);var V=this._getFrameMetricsApprox(z).offset-(D.offset+D.length);C.push(n.createElement(f,{key:"$sticky_trail",style:babelHelpers.defineProperty({},w,V)})),P=!0;break}if(!P){var B=this._getFrameMetricsApprox(E),U=this._getFrameMetricsApprox(z).offset-(B.offset+B.length);C.push(n.createElement(f,{key:"$lead_spacer",style:babelHelpers.defineProperty({},w,U)}))}}if(this._pushCells(C,M,S,K,H,v),!this._hasWarned.keys&&b&&(console.warn("VirtualizedList: missing keys for items, make sure to specify a key property on each item or provide a custom keyExtractor.",L),this._hasWarned.keys=!0),!y&&H<R-1){var W=this._getFrameMetricsApprox(H),j=this.props.getItemLayout?R-1:Math.min(R-1,this._highestMeasuredFrameIndex),$=this._getFrameMetricsApprox(j),Y=$.offset+$.length-(W.offset+W.length);C.push(n.createElement(f,{key:"$tail_spacer",style:babelHelpers.defineProperty({},w,Y)}))}}else if(o){var q=n.isValidElement(o)?o:n.createElement(o,null);C.push(n.cloneElement(q,{key:'$empty',onLayout:function(s){t._onLayoutEmpty(s),q.props.onLayout&&q.props.onLayout(s)},style:[q.props.style,v]}))}if(l){var J=n.isValidElement(l)?l:n.createElement(l,null);C.push(n.createElement(x,{cellKey:this._getCellKey()+'-footer',key:"$footer"},n.createElement(f,{onLayout:this._onLayoutFooter,style:p.compose(v,this.props.ListFooterComponentStyle)},J)))}var X=babelHelpers.objectSpread({},this.props,{onContentSizeChange:this._onContentSizeChange,onLayout:this._onLayout,onScroll:this._onScroll,onScrollBeginDrag:this._onScrollBeginDrag,onScrollEndDrag:this._onScrollEndDrag,onMomentumScrollEnd:this._onMomentumScrollEnd,scrollEventThrottle:this.props.scrollEventThrottle,invertStickyHeaders:void 0!==this.props.invertStickyHeaders?this.props.invertStickyHeaders:this.props.inverted,stickyHeaderIndices:M});v&&(X.style=[v,this.props.style]),this._hasMore=this.state.last<this.props.getItemCount(this.props.data)-1;var G=n.cloneElement((this.props.renderScrollComponent||this._defaultRenderScrollComponent)(X),{ref:this._captureScrollRef},C);return this.props.debug?n.createElement(f,{style:{flex:1}},G,this._renderDebugOverlay()):G}},{key:"componentDidUpdate",value:function(t){var s=this.props,o=s.data,n=s.extraData;o===t.data&&n===t.extraData||(this._hasDataChangedSinceEndReached=!0,this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.resetViewableIndices()})),this._scheduleCellsToRenderUpdate()}},{key:"_computeBlankness",value:function(){this._fillRateHelper.computeBlankness(this.props,this.state,this._scrollMetrics)}},{key:"_onCellLayout",value:function(t,s,o){var n=t.nativeEvent.layout,l={offset:this._selectOffset(n),length:this._selectLength(n),index:o,inLayout:!0},c=this._frames[s];c&&l.offset===c.offset&&l.length===c.length&&o===c.index?this._frames[s].inLayout=!0:(this._totalCellLength+=l.length-(c?c.length:0),this._totalCellsMeasured+=c?0:1,this._averageCellLength=this._totalCellLength/this._totalCellsMeasured,this._frames[s]=l,this._highestMeasuredFrameIndex=Math.max(this._highestMeasuredFrameIndex,o),this._scheduleCellsToRenderUpdate());var h=this._cellKeysToChildListKeys.get(s);if(h){var p=h,u=Array.isArray(p),f=0;for(p=u?p:p["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var _;if(u){if(f>=p.length)break;_=p[f++]}else{if((f=p.next()).done)break;_=f.value}var y=_,v=this._nestedChildLists.get(y);v&&v.ref&&v.ref.measureLayoutRelativeToContainingList()}}this._computeBlankness()}},{key:"measureLayoutRelativeToContainingList",value:function(){var t=this;u.measureLayout(l.findNodeHandle(this),l.findNodeHandle(this.context.virtualizedList.getOutermostParentListRef()),function(t){console.warn("VirtualizedList: Encountered an error while measuring a list's offset from its containing VirtualizedList.")},function(s,o,n,l){t._offsetFromParentVirtualizedList=t._selectOffset({x:s,y:o}),t._scrollMetrics.contentLength=t._selectLength({width:n,height:l});var c=t._convertParentScrollMetrics(t.context.virtualizedList.getScrollMetrics());t._scrollMetrics.visibleLength=c.visibleLength,t._scrollMetrics.offset=c.offset})}},{key:"_renderDebugOverlay",value:function(){for(var t=this._scrollMetrics.visibleLength/this._scrollMetrics.contentLength,s=[],o=this.props.getItemCount(this.props.data),l=0;l<o;l++){var c=this._getFrameMetricsApprox(l);c.inLayout&&s.push(c)}var h=this._getFrameMetricsApprox(this.state.first).offset,p=this._getFrameMetricsApprox(this.state.last),u=p.offset+p.length-h,_=this._scrollMetrics.offset,y=this._scrollMetrics.visibleLength,v={position:'absolute',top:0,right:0};return n.createElement(f,{style:babelHelpers.objectSpread({},v,{bottom:0,width:20,borderColor:'blue',borderWidth:1})},s.map(function(s,o){return n.createElement(f,{key:'f'+o,style:babelHelpers.objectSpread({},v,{left:0,top:s.offset*t,height:s.length*t,backgroundColor:'orange'})})}),n.createElement(f,{style:babelHelpers.objectSpread({},v,{left:0,top:h*t,height:u*t,borderColor:'green',borderWidth:2})}),n.createElement(f,{style:babelHelpers.objectSpread({},v,{left:0,top:_*t,height:y*t,borderColor:'red',borderWidth:2})}))}},{key:"_selectLength",value:function(t){return this.props.horizontal?t.width:t.height}},{key:"_selectOffset",value:function(t){return this.props.horizontal?t.x:t.y}},{key:"_maybeCallOnEndReached",value:function(){var t=this.props,s=t.data,o=t.getItemCount,n=t.onEndReached,l=t.onEndReachedThreshold,c=this._scrollMetrics,h=c.contentLength,p=c.visibleLength,u=h-p-c.offset;n&&this.state.last===o(s)-1&&u<l*p&&(this._hasDataChangedSinceEndReached||this._scrollMetrics.contentLength!==this._sentEndForContentLength)&&(this._hasDataChangedSinceEndReached=!1,this._sentEndForContentLength=this._scrollMetrics.contentLength,n({distanceFromEnd:u}))}},{key:"_scheduleCellsToRenderUpdate",value:function(){var t=this.state,s=t.first,o=t.last,n=this._scrollMetrics,l=n.offset,c=n.visibleLength,h=n.velocity,p=this.props.getItemCount(this.props.data),u=!1,f=this.props.onEndReachedThreshold*c/2;if(s>0){var _=l-this._getFrameMetricsApprox(s).offset;u=u||_<0||h<-2&&_<f}if(o<p-1){var y=this._getFrameMetricsApprox(o).offset-(l+c);u=u||y<0||h>2&&y<f}if(u&&this._averageCellLength)return this._updateCellsToRenderBatcher.dispose({abort:!0}),void this._updateCellsToRender();this._updateCellsToRenderBatcher.schedule()}},{key:"_updateViewableItems",value:function(t){var s=this,o=this.props.getItemCount;this._viewabilityTuples.forEach(function(n){n.viewabilityHelper.onUpdate(o(t),s._scrollMetrics.offset,s._scrollMetrics.visibleLength,s._getFrameMetrics,s._createViewToken,n.onViewableItemsChanged,s.state)})}}],[{key:"getDerivedStateFromProps",value:function(t,s){var o=t.data,n=(t.extraData,t.getItemCount),l=t.maxToRenderPerBatch;return{first:Math.max(0,Math.min(s.first,n(o)-1-l)),last:Math.max(0,Math.min(s.last,n(o)-1))}}}]),S})(n.PureComponent);S.defaultProps={disableVirtualization:!1,horizontal:!1,initialNumToRender:10,keyExtractor:function(t,s){return null!=t.key?t.key:(b=!0,t.type&&t.type.displayName&&(L=t.type.displayName),String(s))},maxToRenderPerBatch:10,onEndReachedThreshold:2,scrollEventThrottle:50,updateCellsBatchingPeriod:50,windowSize:21},S.contextTypes={virtualizedCell:o.shape({cellKey:o.string}),virtualizedList:o.shape({getScrollMetrics:o.func,horizontal:o.bool,getOutermostParentListRef:o.func,getNestedChildState:o.func,registerAsNestedChild:o.func,unregisterAsNestedChild:o.func})},S.childContextTypes={virtualizedList:o.shape({getScrollMetrics:o.func,horizontal:o.bool,getOutermostParentListRef:o.func,getNestedChildState:o.func,registerAsNestedChild:o.func,unregisterAsNestedChild:o.func})};var M=(function(t){function s(){var t,o;babelHelpers.classCallCheck(this,s);for(var n=arguments.length,l=new Array(n),c=0;c<n;c++)l[c]=arguments[c];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={separatorProps:{highlighted:!1,leadingItem:o.props.item}},o._separators={highlight:function(){var t=o.props,s=t.cellKey,n=t.prevCellKey;o.props.onUpdateSeparators([s,n],{highlighted:!0})},unhighlight:function(){var t=o.props,s=t.cellKey,n=t.prevCellKey;o.props.onUpdateSeparators([s,n],{highlighted:!1})},updateProps:function(t,s){var n=o.props,l=n.cellKey,c=n.prevCellKey;o.props.onUpdateSeparators(['leading'===t?c:l],s)}},o}return babelHelpers.inherits(s,t),babelHelpers.createClass(s,[{key:"getChildContext",value:function(){return{virtualizedCell:{cellKey:this.props.cellKey}}}},{key:"updateSeparatorProps",value:function(t){this.setState(function(s){return{separatorProps:babelHelpers.objectSpread({},s.separatorProps,t)}})}},{key:"componentWillUnmount",value:function(){this.props.onUnmount(this.props.cellKey)}},{key:"render",value:function(){var t=this.props,s=t.CellRendererComponent,o=t.ItemSeparatorComponent,l=t.fillRateHelper,c=t.horizontal,h=t.item,p=t.index,u=t.inversionStyle,_=t.isSelected,y=t.parentProps,C=y.renderItem,b=y.getItemLayout;v(C,'no renderItem!');var L=C({item:h,index:p,isSelected:_,separators:this._separators}),S=!b||y.debug||l.enabled()?this.props.onLayout:void 0,M=o&&n.createElement(o,this.state.separatorProps),x=u?c?[{flexDirection:'row-reverse'},u]:[{flexDirection:'column-reverse'},u]:c?[{flexDirection:'row'},u]:u;return s?n.createElement(s,babelHelpers.extends({},this.props,{style:x,onLayout:S}),L,M):n.createElement(f,{style:x,onLayout:S},L,M)}}]),s})(n.Component);M.childContextTypes={virtualizedCell:o.shape({cellKey:o.string})};var x=(function(t){function s(){return babelHelpers.classCallCheck(this,s),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).apply(this,arguments))}return babelHelpers.inherits(s,t),babelHelpers.createClass(s,[{key:"getChildContext",value:function(){return{virtualizedCell:{cellKey:this.props.cellKey}}}},{key:"render",value:function(){return this.props.children}}]),s})(n.Component);x.childContextTypes={virtualizedCell:o.shape({cellKey:o.string})};var I=p.create({verticallyInverted:{transform:[{scaleY:-1}]},horizontallyInverted:{transform:[{scaleX:-1}]}});m.exports=S},234,[235,236,43,94,97,25,233,222,98,83,119,237,89,21,6,47,238]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=(function(){function l(t,n){babelHelpers.classCallCheck(this,l),this._delay=n,this._callback=t}return babelHelpers.createClass(l,[{key:"dispose",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{abort:!1};this._taskHandle&&(this._taskHandle.cancel(),t.abort||this._callback(),this._taskHandle=null)}},{key:"schedule",value:function(){var l=this;if(!this._taskHandle){var n=setTimeout(function(){l._taskHandle=t.runAfterInteractions(function(){l._taskHandle=null,l._callback()})},this._delay);this._taskHandle={cancel:function(){return clearTimeout(n)}}}}}]),l})();m.exports=l},235,[195]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=function t(){babelHelpers.classCallCheck(this,t),this.any_blank_count=0,this.any_blank_ms=0,this.any_blank_speed_sum=0,this.mostly_blank_count=0,this.mostly_blank_ms=0,this.pixels_blank=0,this.pixels_sampled=0,this.pixels_scrolled=0,this.total_time_spent=0,this.sample_count=0},l=[],_=10,h=null,o=(function(){function o(t){babelHelpers.classCallCheck(this,o),this._anyBlankStartTime=null,this._enabled=!1,this._info=new n,this._mostlyBlankStartTime=null,this._samplesStartTime=null,this._getFrameMetrics=t,this._enabled=(h||0)>Math.random(),this._resetData()}return babelHelpers.createClass(o,null,[{key:"addListener",value:function(t){return s(null!==h,'Call `FillRateHelper.setSampleRate` before `addListener`.'),l.push(t),{remove:function(){l=l.filter(function(s){return t!==s})}}}},{key:"setSampleRate",value:function(t){h=t}},{key:"setMinSampleCount",value:function(t){_=t}}]),babelHelpers.createClass(o,[{key:"activate",value:function(){this._enabled&&null==this._samplesStartTime&&(this._samplesStartTime=t())}},{key:"deactivateAndFlush",value:function(){if(this._enabled){var s=this._samplesStartTime;if(null!=s)if(this._info.sample_count<_)this._resetData();else{var n=t()-s,h=babelHelpers.objectSpread({},this._info,{total_time_spent:n});l.forEach(function(t){return t(h)}),this._resetData()}}}},{key:"computeBlankness",value:function(s,n,l){if(!this._enabled||0===s.getItemCount(s.data)||null==this._samplesStartTime)return 0;var _=l.dOffset,h=l.offset,o=l.velocity,u=l.visibleLength;this._info.sample_count++,this._info.pixels_sampled+=Math.round(u),this._info.pixels_scrolled+=Math.round(Math.abs(_));var f=Math.round(1e3*Math.abs(o)),c=t();null!=this._anyBlankStartTime&&(this._info.any_blank_ms+=c-this._anyBlankStartTime),this._anyBlankStartTime=null,null!=this._mostlyBlankStartTime&&(this._info.mostly_blank_ms+=c-this._mostlyBlankStartTime),this._mostlyBlankStartTime=null;for(var b=0,k=n.first,p=this._getFrameMetrics(k);k<=n.last&&(!p||!p.inLayout);)p=this._getFrameMetrics(k),k++;p&&k>0&&(b=Math.min(u,Math.max(0,p.offset-h)));for(var y=0,v=n.last,S=this._getFrameMetrics(v);v>=n.first&&(!S||!S.inLayout);)S=this._getFrameMetrics(v),v--;if(S&&v<s.getItemCount(s.data)-1){var M=S.offset+S.length;y=Math.min(u,Math.max(0,h+u-M))}var T=Math.round(b+y),B=T/u;return B>0?(this._anyBlankStartTime=c,this._info.any_blank_speed_sum+=f,this._info.any_blank_count++,this._info.pixels_blank+=T,B>.5&&(this._mostlyBlankStartTime=c,this._info.mostly_blank_count++)):(f<.01||Math.abs(_)<1)&&this.deactivateAndFlush(),B}},{key:"enabled",value:function(){return this._enabled}},{key:"_resetData",value:function(){this._anyBlankStartTime=null,this._info=new n,this._mostlyBlankStartTime=null,this._samplesStartTime=null}}]),o})();m.exports=o},236,[44,47]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=(function(){function n(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{viewAreaCoveragePercentThreshold:0};babelHelpers.classCallCheck(this,n),this._hasInteracted=!1,this._timers=new Set,this._viewableIndices=[],this._viewableItems=new Map,this._config=t}return babelHelpers.createClass(n,[{key:"dispose",value:function(){this._timers.forEach(clearTimeout)}},{key:"computeViewableItems",value:function(n,l,o,c,h){var u=this._config,f=u.itemVisiblePercentThreshold,v=u.viewAreaCoveragePercentThreshold,b=null!=v,y=b?v:f;t(null!=y&&null!=f!=(null!=v),'Must set exactly one of itemVisiblePercentThreshold or viewAreaCoveragePercentThreshold');var _=[];if(0===n)return _;var w=-1,p=h||{first:0,last:n-1},I=p.first,k=p.last;t(k<n,'Invalid render range '+JSON.stringify({renderRange:h,itemCount:n}));for(var T=I;T<=k;T++){var A=c(T);if(A){var S=A.offset-l,C=S+A.length;if(S<o&&C>0)w=T,s(b,y,S,C,o,A.length)&&_.push(T);else if(w>=0)break}}return _}},{key:"onUpdate",value:function(t,n,s,l,o,c,h){var u=this;if((!this._config.waitForInteraction||this._hasInteracted)&&0!==t&&l(0)){var f=[];if(t&&(f=this.computeViewableItems(t,n,s,l,h)),this._viewableIndices.length!==f.length||!this._viewableIndices.every(function(t,n){return t===f[n]}))if(this._viewableIndices=f,this._config.minimumViewTime){var v=setTimeout(function(){u._timers.delete(v),u._onUpdateSync(f,c,o)},this._config.minimumViewTime);this._timers.add(v)}else this._onUpdateSync(f,c,o)}}},{key:"resetViewableIndices",value:function(){this._viewableIndices=[]}},{key:"recordInteraction",value:function(){this._hasInteracted=!0}},{key:"_onUpdateSync",value:function(t,n,s){var l=this;t=t.filter(function(t){return l._viewableIndices.includes(t)});var o=this._viewableItems,c=new Map(t.map(function(t){var n=s(t,!0);return[n.key,n]})),h=[],u=c,f=Array.isArray(u),v=0;for(u=f?u:u["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var b;if(f){if(v>=u.length)break;b=u[v++]}else{if((v=u.next()).done)break;b=v.value}var y=b,_=babelHelpers.slicedToArray(y,2),w=_[0],p=_[1];o.has(w)||h.push(p)}var I=o,k=Array.isArray(I),T=0;for(I=k?I:I["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var A;if(k){if(T>=I.length)break;A=I[T++]}else{if((T=I.next()).done)break;A=T.value}var S=A,C=babelHelpers.slicedToArray(S,2),V=C[0],x=C[1];c.has(V)||h.push(babelHelpers.objectSpread({},x,{isViewable:!1}))}h.length>0&&(this._viewableItems=c,n({viewableItems:Array.from(c.values()),changed:h,viewabilityConfig:this._config}))}}]),n})();function s(t,n,s,c,h,u){if(o(s,c,h))return!0;var f=l(s,c,h);return 100*(t?f/h:f/u)>=n}function l(t,n,s){var l=Math.min(n,s)-Math.max(t,0);return Math.max(0,l)}function o(t,n,s){return t>=0&&n<=s&&n>t}m.exports=n},237,[6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);function n(n,s,f){for(var l=[],o=0,u=0;u<s;u++)for(var h=f(u),v=h.offset+h.length,c=0;c<n.length;c++)if(null==l[c]&&v>=n[c]&&(l[c]=u,o++,c===n.length-1))return t(o===n.length,'bad offsets input, should be in increasing order: %s',JSON.stringify(n)),l;return l}function s(t,n){return n.last-n.first+1-Math.max(0,1+Math.min(n.last,t.last)-Math.max(n.first,t.first))}var f={computeWindowedRenderLimits:function(t,f,l,o){var u=t.data,h=t.getItemCount,v=t.maxToRenderPerBatch,c=t.windowSize,b=h(u);if(0===b)return f;var x=o.offset,M=o.velocity,w=o.visibleLength,p=Math.max(0,x),y=p+w,C=(c-1)*w,O=M>1?'after':M<-1?'before':'none',L=Math.max(0,p-.5*C),R=Math.max(0,y+.5*C);if(l(b-1).offset<L)return{first:Math.max(0,b-1-v),last:b-1};var S=n([L,p,y,R],t.getItemCount(t.data),l),T=babelHelpers.slicedToArray(S,4),B=T[0],I=T[1],J=T[2],N=T[3];B=null==B?0:B,I=null==I?Math.max(0,B):I,N=null==N?b-1:N;for(var _={first:I,last:J=null==J?Math.min(N,I+v-1):J},k=s(f,_);!(I<=B&&J>=N);){var z=k>=v,A=I<=f.first||I>f.last,E=I>B&&(!z||!A),F=J>=f.last||J<f.first,H=J<N&&(!z||!F);if(z&&!E&&!H)break;!E||'after'===O&&H&&F||(A&&k++,I--),!H||'before'===O&&E&&A||(F&&k++,J++)}if(!(J>=I&&I>=0&&J<b&&I>=B&&J<=N&&I<=_.first&&J>=_.last))throw new Error('Bad window calculation '+JSON.stringify({first:I,last:J,itemCount:b,overscanFirst:B,overscanLast:N,visible:_}));return{first:I,last:J}},elementsThatOverlapOffsets:n,newRangeCount:s};m.exports=f},238,[6]);
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n=t.rowIndex+1,o=0;o<t.sectionIndex;o++)n+=c.props.sections[o].data.length+2;c._listRef.ensureItemAtIndexIsVisible(n)},c._handleKeyDown=function(t){},c._keyExtractor=function(t,n){var o=c._subExtractor(n);return o&&o.key||String(n)},c._convertViewable=function(t){s(null!=t.index,'Received a broken ViewToken');var n=c._subExtractor(t.index);if(!n)return null;var o=n.section.keyExtractor||c.props.keyExtractor;return babelHelpers.objectSpread({},t,{index:n.index,key:o(t.item,n.index),section:n.section})},c._onViewableItemsChanged=function(t){var n=t.viewableItems,o=t.changed;c.props.onViewableItemsChanged&&c.props.onViewableItemsChanged({viewableItems:n.map(c._convertViewable,babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(c))).filter(Boolean),changed:o.map(c._convertViewable,babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(c))).filter(Boolean)})},c._isItemSelected=function(t){var n=!1;if(c.state.selectedRowIndexPath){var o=c.state.selectedRowIndexPath,s=c.props.sections;if(s&&o.sectionIndex<s.length){var l=s[o.sectionIndex];if(o.rowIndex<l.data.length)n=t==l.data[o.rowIndex]}}return n},c._renderItem=function(n){var o=n.item,l=n.index,u=c._subExtractor(l);if(!u)return null;var h=u.index;if(null==h){var b=u.section;if(!0===u.header){var I=c.props.renderSectionHeader;return I?I({section:b}):null}var f=c.props.renderSectionFooter;return f?f({section:b}):null}var S=u.section.renderItem||c.props.renderItem,v=c._getSeparatorComponent(l,u);return s(S,'no renderItem!'),t.createElement(p,{SeparatorComponent:v,LeadingSeparatorComponent:0===h?c.props.SectionSeparatorComponent:void 0,cellKey:u.key,index:h,isSelected:c._isItemSelected(o),item:o,leadingItem:u.leadingItem,leadingSection:u.leadingSection,onUpdateSeparator:c._onUpdateSeparator,prevCellKey:(c._subExtractor(l-1)||{}).key,ref:function(t){c._cellRefs[u.key]=t},renderItem:S,section:u.section,trailingItem:u.trailingItem,trailingSection:u.trailingSection})},c._onUpdateSeparator=function(t,n){var o=c._cellRefs[t];o&&o.updateSeparatorProps(n)},c._cellRefs={},c._captureRef=function(t){c._listRef=t},c.state=c._computeState(n),c}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"scrollToLocation",value:function(t){for(var n=t.itemIndex+1,o=0;o<t.sectionIndex;o++)n+=this.props.sections[o].data.length+2;var s=babelHelpers.objectSpread({},t,{index:n});this._listRef.scrollToIndex(s)}},{key:"getListRef",value:function(){return this._listRef}}]),babelHelpers.createClass(l,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.setState(this._computeState(t))}},{key:"_computeState",value:function(t){var n=t.ListHeaderComponent?1:0,o=[],s=t.sections.reduce(function(t,s){return o.push(t+n),t+s.data.length+2},0);return{childProps:babelHelpers.objectSpread({},t,{renderItem:this._renderItem,ItemSeparatorComponent:void 0,data:t.sections,getItemCount:function(){return s},getItem:c,keyExtractor:this._keyExtractor,onViewableItemsChanged:t.onViewableItemsChanged?this._onViewableItemsChanged:void 0,stickyHeaderIndices:t.stickySectionHeadersEnabled?o:void 0}),selectedRowIndexPath:{sectionIndex:0,rowIndex:-1}}}},{key:"render",value:function(){var n=this.props.onKeyDown;return n||(n=this.props.enableSelectionOnKeyPress?this._handleKeyDown:null),t.createElement(o,babelHelpers.extends({},this.state.childProps,{ref:this._captureRef,onKeyDown:n},this.state.selectedRowIndexPath))}},{key:"_subExtractor",value:function(t){for(var n=t,o=this.props.keyExtractor,s=0;s<this.props.sections.length;s++){var l=this.props.sections[s],p=l.key||String(s);if((n-=1)>=l.data.length+1)n-=l.data.length+1;else return-1===n?{section:l,key:p+':header',index:null,header:!0,trailingSection:this.props.sections[s+1]}:n===l.data.length?{section:l,key:p+':footer',index:null,header:!1,trailingSection:this.props.sections[s+1]}:{section:l,key:p+':'+(l.keyExtractor||o)(l.data[n],n),index:n,leadingItem:l.data[n-1],leadingSection:this.props.sections[s-1],trailingItem:l.data[n+1],trailingSection:this.props.sections[s+1]}}}},{key:"_getSeparatorComponent",value:function(t,n){if(!(n=n||this._subExtractor(t)))return null;var o=n.section.ItemSeparatorComponent||this.props.ItemSeparatorComponent,s=this.props.SectionSeparatorComponent,l=t===this.state.childProps.getItemCount()-1,p=n.index===n.section.data.length-1;return s&&p?s:!o||p||l?null:o}}]),l})(t.PureComponent);l.defaultProps=babelHelpers.objectSpread({},o.defaultProps,{data:[]});var p=(function(o){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),p=0;p<o;p++)l[p]=arguments[p];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={separatorProps:{highlighted:!1,leadingItem:n.props.item,leadingSection:n.props.leadingSection,section:n.props.section,trailingItem:n.props.trailingItem,trailingSection:n.props.trailingSection},leadingSeparatorProps:{highlighted:!1,leadingItem:n.props.leadingItem,leadingSection:n.props.leadingSection,section:n.props.section,trailingItem:n.props.item,trailingSection:n.props.trailingSection}},n._separators={highlight:function(){['leading','trailing'].forEach(function(t){return n._separators.updateProps(t,{highlighted:!0})})},unhighlight:function(){['leading','trailing'].forEach(function(t){return n._separators.updateProps(t,{highlighted:!1})})},updateProps:function(t,o){var s=n.props,l=s.LeadingSeparatorComponent,p=s.cellKey,c=s.prevCellKey;'leading'===t&&null!=l?n.setState(function(t){return{leadingSeparatorProps:babelHelpers.objectSpread({},t.leadingSeparatorProps,o)}}):n.props.onUpdateSeparator('leading'===t&&c||p,o)}},n}return babelHelpers.inherits(s,o),babelHelpers.createClass(s,[{key:"updateSeparatorProps",value:function(t){this.setState(function(n){return{separatorProps:babelHelpers.objectSpread({},n.separatorProps,t)}})}},{key:"render",value:function(){var o=this.props,s=o.LeadingSeparatorComponent,l=o.SeparatorComponent,p=o.item,c=o.index,u=o.isSelected,h=o.section,b=this.props.renderItem({item:p,index:c,isSelected:u,section:h,separators:this._separators}),I=s&&t.createElement(s,this.state.leadingSeparatorProps),f=l&&t.createElement(l,this.state.separatorProps);return I||f?t.createElement(n,null,I,b,f):b}}],[{key:"getDerivedStateFromProps",value:function(t,n){return{separatorProps:babelHelpers.objectSpread({},n.separatorProps,{leadingItem:t.item,leadingSection:t.leadingSection,section:t.section,trailingItem:t.trailingItem,trailingSection:t.trailingSection}),leadingSeparatorProps:babelHelpers.objectSpread({},n.leadingSeparatorProps,{leadingItem:t.leadingItem,leadingSection:t.leadingSection,section:t.section,trailingItem:t.item,trailingSection:t.trailingSection})}}}]),s})(t.Component);function c(t,n){if(!t)return null;for(var o=n-1,s=0;s<t.length;s++){if(-1===o||o===t[s].data.length)return t[s];if(o<t[s].data.length)return t[s].data[o];o-=t[s].data.length+2}return null}m.exports=l},240,[43,97,119,234,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),h=r(d[4]),p=r(d[5]),l=r(d[6])('AndroidCheckBox'),c=p({displayName:'CheckBox',propTypes:babelHelpers.objectSpread({},h,{value:n.bool,disabled:n.bool,onChange:n.func,onValueChange:n.func,testID:n.string}),getDefaultProps:function(){return{value:!1,disabled:!1}},mixins:[t],_rctCheckBox:{},_onChange:function(t){this._rctCheckBox.setNativeProps({value:this.props.value}),this.props.onChange&&this.props.onChange(t),this.props.onValueChange&&this.props.onValueChange(t.nativeEvent.value)},render:function(){var t=this,n=babelHelpers.objectSpread({},this.props);return n.onStartShouldSetResponder=function(){return!0},n.onResponderTerminationRequest=function(){return!1},n.enabled=!this.props.disabled,n.on=this.props.value,n.style=[u.rctCheckBox,this.props.style],o.createElement(l,babelHelpers.extends({},n,{ref:function(n){t._rctCheckBox=n},onChange:this._onChange}))}}),u=s.create({rctCheckBox:{height:32,width:32}});m.exports=c},241,[155,94,97,98,157,161,122]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),o=(function(n){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(l,{style:[c.dummyDatePickerIOS,this.props.style]},t.createElement(s,{style:c.datePickerText},"DatePickerIOS is not supported on this platform!"))}}]),o})(t.Component),c=n.create({dummyDatePickerIOS:{height:100,width:300,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center',margin:10},datePickerText:{color:'#333333',margin:20}});m.exports=o},242,[97,98,133,119]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),s=r(d[2]),n=r(d[3]),o=r(d[4]),c=(function(c){function p(){var t,l;babelHelpers.classCallCheck(this,p);for(var s=arguments.length,n=new Array(s),o=0;o<s;o++)n[o]=arguments[o];return(l=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(p)).call.apply(t,[this].concat(n))))._viewRef=null,l._captureRef=function(t){l._viewRef=t},l}return babelHelpers.inherits(p,c),babelHelpers.createClass(p,[{key:"setNativeProps",value:function(t){var l=this._viewRef;l&&(o(l),l.setNativeProps(t))}},{key:"render",value:function(){var o=this.props,c=o.children,p=o.style,u=o.imageStyle,b=o.imageRef,h=babelHelpers.objectWithoutProperties(o,["children","style","imageStyle","imageRef"]);return l.createElement(n,{accessibilityIgnoresInvertColors:!0,style:p,ref:this._captureRef},l.createElement(t,babelHelpers.extends({},h,{style:[s.absoluteFill,{width:p.width,height:p.height},u],ref:b})),c)}}]),p})(l.Component);m.exports=c},243,[167,97,98,119,244]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=function(o){t(o&&'function'==typeof o.setNativeProps,"Touchable child must either be native or forward setNativeProps to a native component")}},244,[6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]).ImageEditingManager,l=(function(){function l(){babelHelpers.classCallCheck(this,l)}return babelHelpers.createClass(l,null,[{key:"cropImage",value:function(l,t,c,s){n.cropImage(l,t,c,s)}}]),l})();m.exports=l},245,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]).ImageStoreManager,n=(function(){function n(){babelHelpers.classCallCheck(this,n)}return babelHelpers.createClass(n,null,[{key:"hasImageForTag",value:function(n,s){o.hasImageForTag?o.hasImageForTag(n,s):console.warn('hasImageForTag() not implemented')}},{key:"removeImageForTag",value:function(n){o.removeImageForTag?o.removeImageForTag(n):console.warn('removeImageForTag() not implemented')}},{key:"addImageFromBase64",value:function(n,s,t){o.addImageFromBase64(n,s,t)}},{key:"getBase64ForTag",value:function(n,s,t){o.getBase64ForTag(n,s,t)}}]),n})();m.exports=n},246,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]),s=r(d[2]),n=(r(d[3]),r(d[4])('RCTInputAccessoryView')),o=(function(s){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,s),babelHelpers.createClass(o,[{key:"render",value:function(){return console.warn('<InputAccessoryView> is not supported on Android yet.'),0===t.Children.count(this.props.children)?null:t.createElement(n,{style:[this.props.style,l.container],nativeID:this.props.nativeID,backgroundColor:this.props.backgroundColor},this.props.children)}}]),o})(t.Component),l=s.create({container:{position:'absolute'}});m.exports=o},247,[104,97,98,157,122]);
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-__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},249,[250]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=(function(s){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"setNativeProps",value:function(){}},{key:"render",value:function(){var s=r(d[2]);return t.createElement(s,{style:[l.unimplementedView,this.props.style]},this.props.children)}}]),n})(t.Component),l=s.create({unimplementedView:{}});m.exports=n},250,[97,98,119]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=r(d[2]),n=r(d[3]),l=r(d[4]),p=r(d[5]),c=r(d[6]),h=r(d[7]),u=r(d[8]),b=u('AndroidDropdownPicker'),v=u('AndroidDialogPicker'),f=l(babelHelpers.objectSpread({},c,{color:t})),y=(function(t){function o(t,n){var l;babelHelpers.classCallCheck(this,o),(l=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).call(this,t,n)))._stateFromProps=function(t){var o=0,n=s.Children.map(t.children,function(s,n){s.props.value===t.selectedValue&&(o=n);var l={value:s.props.value,label:s.props.label};return s.props.color&&(l.color=h(s.props.color)),l});return{selectedIndex:o,items:n}},l._onChange=function(t){if(l.props.onValueChange){var o=t.nativeEvent.position;if(o>=0){var n=s.Children.toArray(l.props.children)[o].props.value;l.props.onValueChange(n,o)}else l.props.onValueChange(null,o)}l._lastNativePosition=t.nativeEvent.position,l.forceUpdate()};var p=l._stateFromProps(t);return l.state=babelHelpers.objectSpread({},p,{initialSelectedIndex:p.selectedIndex}),l}return babelHelpers.inherits(o,t),babelHelpers.createClass(o,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.setState(this._stateFromProps(t))}},{key:"render",value:function(){var t="dropdown"===this.props.mode?b:v,o={enabled:this.props.enabled,items:this.state.items,mode:this.props.mode,onSelect:this._onChange,prompt:this.props.prompt,selected:this.state.initialSelectedIndex,testID:this.props.testID,style:[C.pickerAndroid,this.props.style],accessibilityLabel:this.props.accessibilityLabel};return s.createElement(t,babelHelpers.extends({ref:"picker"},o))}},{key:"componentDidMount",value:function(){this._lastNativePosition=this.state.initialSelectedIndex}},{key:"componentDidUpdate",value:function(){this.refs.picker&&this.state.selectedIndex!==this._lastNativePosition&&(this.refs.picker.setNativeProps({selected:this.state.selectedIndex}),this._lastNativePosition=this.state.selectedIndex)}}]),o})(s.Component);y.propTypes=babelHelpers.objectSpread({},p,{style:f,selectedValue:o.any,enabled:o.bool,mode:o.oneOf(['dialog','dropdown']),onValueChange:o.func,prompt:o.string,testID:o.string});var C=n.create({pickerAndroid:{height:50}});m.exports=y},256,[104,97,94,98,137,157,113,114,122]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),l=(function(s){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(o,{style:[c.dummy,this.props.style]},t.createElement(n,{style:c.text},"ProgressViewIOS is not supported on this platform!"))}}]),l})(t.Component),c=s.create({dummy:{width:120,height:20,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center'},text:{color:'#333333',margin:5,fontSize:10}});m.exports=l},257,[97,98,133,119]);
-__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},258,[119]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=(function(n){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(s,{style:[c.dummy,this.props.style]},t.createElement(o,{style:c.text},"SegmentedControlIOS is not supported on this platform!"))}}]),l})(t.Component),c=n.create({dummy:{width:120,height:50,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center'},text:{color:'#333333',margin:5,fontSize:10}});m.exports=l},259,[97,98,133,119]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]),r(d[1]);var n,t=r(d[2]),o=r(d[3]),l=r(d[4])('RCTSlider'),u=t.forwardRef(function(u,s){var v=o.compose(n.slider,u.style),f=u.onValueChange&&function(n){var t;t=n.nativeEvent.fromUser,u.onValueChange&&t&&u.onValueChange(n.nativeEvent.value)},p=f,c=u.onSlidingComplete&&function(n){u.onSlidingComplete&&u.onSlidingComplete(n.nativeEvent.value)};return t.createElement(l,babelHelpers.extends({},u,{ref:s,style:v,onChange:p,onSlidingComplete:c,onValueChange:f,enabled:!u.disabled,onStartShouldSetResponder:function(){return!0},onResponderTerminationRequest:function(){return!1}}))});u.defaultProps={disabled:!1,value:0,minimumValue:0,maximumValue:1,step:0},n=o.create({slider:{}}),m.exports=u},260,[25,43,97,98,122]);
-__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},261,[250]);
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-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]),r(d[1]);var t=r(d[2])('AndroidSwitch');m.exports=t},263,[43,25,122]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=(function(t){function l(t,s){var u;return babelHelpers.classCallCheck(this,l),(u=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).call(this,t,s)))._flatListRef=null,u._shouldBounceFirstRowOnMount=!1,u._onScroll=function(t){u.state.openRowKey&&u.setState({openRowKey:null}),u.props.onScroll&&u.props.onScroll(t)},u._renderItem=function(t){var s=u.props.renderQuickActions(t),l=u.props.keyExtractor(t.item,t.index);if(!s)return u.props.renderItem(t);var p=!1;return u._shouldBounceFirstRowOnMount&&(u._shouldBounceFirstRowOnMount=!1,p=!0),n.createElement(o,{slideoutView:s,isOpen:l===u.state.openRowKey,maxSwipeDistance:u._getMaxSwipeDistance(t),onOpen:function(){return u._onOpen(l)},onClose:function(){return u._onClose(l)},shouldBounceOnMount:p,onSwipeEnd:u._setListViewScrollable,onSwipeStart:u._setListViewNotScrollable},u.props.renderItem(t))},u._setListViewScrollable=function(){u._setListViewScrollableTo(!0)},u._setListViewNotScrollable=function(){u._setListViewScrollableTo(!1)},u.state={openRowKey:null},u._shouldBounceFirstRowOnMount=u.props.bounceFirstRowOnMount,u}return babelHelpers.inherits(l,t),babelHelpers.createClass(l,[{key:"render",value:function(){var t=this;return n.createElement(s,babelHelpers.extends({},this.props,{ref:function(n){t._flatListRef=n},onScroll:this._onScroll,renderItem:this._renderItem,extraData:this.state}))}},{key:"_getMaxSwipeDistance",value:function(t){return'function'==typeof this.props.maxSwipeDistance?this.props.maxSwipeDistance(t):this.props.maxSwipeDistance}},{key:"_setListViewScrollableTo",value:function(t){this._flatListRef&&this._flatListRef.setNativeProps({scrollEnabled:t})}},{key:"_onOpen",value:function(t){this.setState({openRowKey:t})}},{key:"_onClose",value:function(t){this.setState({openRowKey:null})}}]),l})(n.Component);l.propTypes=babelHelpers.objectSpread({},s.propTypes,{bounceFirstRowOnMount:t.bool.isRequired,maxSwipeDistance:t.oneOfType([t.number,t.func]).isRequired,renderQuickActions:t.func.isRequired}),l.defaultProps=babelHelpers.objectSpread({},s.defaultProps,{bounceFirstRowOnMount:!0,renderQuickActions:function(){return null}}),m.exports=l},264,[94,97,265,216]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),p=r(d[4]),h=r(d[5]),u=r(d[6]),l=r(d[7]),c=r(d[8]),_=r(d[9]),f=n.isRTL,w=c({displayName:'SwipeableRow',_panResponder:{},_previousLeft:0,mixins:[u],propTypes:{children:p.any,isOpen:p.bool,preventSwipeRight:p.bool,maxSwipeDistance:p.number.isRequired,onOpen:p.func.isRequired,onClose:p.func.isRequired,onSwipeEnd:p.func.isRequired,onSwipeStart:p.func.isRequired,shouldBounceOnMount:p.bool,slideoutView:p.node.isRequired,swipeThreshold:p.number.isRequired},getInitialState:function(){return{currentLeft:new t.Value(this._previousLeft),isSwipeableViewRendered:!1,rowHeight:null}},getDefaultProps:function(){return{isOpen:!1,preventSwipeRight:!1,maxSwipeDistance:0,onOpen:_,onClose:_,onSwipeEnd:_,onSwipeStart:_,swipeThreshold:30}},UNSAFE_componentWillMount:function(){this._panResponder=o.create({onMoveShouldSetPanResponderCapture:this._handleMoveShouldSetPanResponderCapture,onPanResponderGrant:this._handlePanResponderGrant,onPanResponderMove:this._handlePanResponderMove,onPanResponderRelease:this._handlePanResponderEnd,onPanResponderTerminationRequest:this._onPanResponderTerminationRequest,onPanResponderTerminate:this._handlePanResponderEnd,onShouldBlockNativeResponder:function(t,n){return!1}})},componentDidMount:function(){var t=this;this.props.shouldBounceOnMount&&this.setTimeout(function(){t._animateBounceBack(400)},700)},UNSAFE_componentWillReceiveProps:function(t){this.props.isOpen&&!t.isOpen&&this._animateToClosedPosition()},render:function(){var n;this.state.isSwipeableViewRendered&&this.state.rowHeight&&(n=s.createElement(l,{style:[R.slideOutContainer,{height:this.state.rowHeight}]},this.props.slideoutView));var o=s.createElement(t.View,{onLayout:this._onSwipeableViewLayout,style:{transform:[{translateX:this.state.currentLeft}]}},this.props.children);return s.createElement(l,this._panResponder.panHandlers,n,o)},close:function(){this.props.onClose(),this._animateToClosedPosition()},_onSwipeableViewLayout:function(t){this.setState({isSwipeableViewRendered:!0,rowHeight:t.nativeEvent.layout.height})},_handleMoveShouldSetPanResponderCapture:function(t,n){return n.dy<10&&this._isValidSwipe(n)},_handlePanResponderGrant:function(t,n){},_handlePanResponderMove:function(t,n){this._isSwipingExcessivelyRightFromClosedPosition(n)||(this.props.onSwipeStart(),this._isSwipingRightFromClosed(n)?this._swipeSlowSpeed(n):this._swipeFullSpeed(n))},_isSwipingRightFromClosed:function(t){var n=f?-t.dx:t.dx;return 0===this._previousLeft&&n>0},_swipeFullSpeed:function(t){this.state.currentLeft.setValue(this._previousLeft+t.dx)},_swipeSlowSpeed:function(t){this.state.currentLeft.setValue(this._previousLeft+t.dx/4)},_isSwipingExcessivelyRightFromClosedPosition:function(t){var n=f?-t.dx:t.dx;return this._isSwipingRightFromClosed(t)&&n>120},_onPanResponderTerminationRequest:function(t,n){return!1},_animateTo:function(n){var o=this,s=arguments.length>1&&void 0!==arguments[1]?arguments[1]:300,p=arguments.length>2&&void 0!==arguments[2]?arguments[2]:_;t.timing(this.state.currentLeft,{duration:s,toValue:n,useNativeDriver:!0}).start(function(){o._previousLeft=n,p()})},_animateToOpenPosition:function(){var t=f?-this.props.maxSwipeDistance:this.props.maxSwipeDistance;this._animateTo(-t)},_animateToOpenPositionWith:function(t,n){t=t>.3?t:.3;var o=Math.abs((this.props.maxSwipeDistance-Math.abs(n))/t),s=f?-this.props.maxSwipeDistance:this.props.maxSwipeDistance;this._animateTo(-s,o)},_animateToClosedPosition:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:300;this._animateTo(0,t)},_animateToClosedPositionDuringBounce:function(){this._animateToClosedPosition(300)},_animateBounceBack:function(t){var n=f?-30:30;this._animateTo(-n,t,this._animateToClosedPositionDuringBounce)},_isValidSwipe:function(t){return!(this.props.preventSwipeRight&&0===this._previousLeft&&t.dx>0)&&Math.abs(t.dx)>10},_shouldAnimateRemainder:function(t){return Math.abs(t.dx)>this.props.swipeThreshold||t.vx>.3},_handlePanResponderEnd:function(t,n){var o=f?-n.dx:n.dx;this._isSwipingRightFromClosed(n)?(this.props.onOpen(),this._animateBounceBack(300)):this._shouldAnimateRemainder(n)?o<0?(this.props.onOpen(),this._animateToOpenPositionWith(n.vx,o)):(this.props.onClose(),this._animateToClosedPosition()):0===this._previousLeft?this._animateToClosedPosition():this._animateToOpenPosition(),this.props.onSwipeEnd()}}),R=((function(t){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}babelHelpers.inherits(n,t),babelHelpers.createClass(n,[{key:"close",value:function(){}}])})(s.Component),h.create({slideOutContainer:{bottom:0,left:0,position:'absolute',right:0,top:0}}));m.exports=w},265,[187,252,266,97,94,98,183,119,161,15]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),o=r(d[1]),t=o.currentCentroidXOfTouchesChangedAfter,u=o.currentCentroidYOfTouchesChangedAfter,s=o.previousCentroidXOfTouchesChangedAfter,c=o.previousCentroidYOfTouchesChangedAfter,p=o.currentCentroidX,v=o.currentCentroidY,h={_initializeGestureState:function(n){n.moveX=0,n.moveY=0,n.x0=0,n.y0=0,n.dx=0,n.dy=0,n.vx=0,n.vy=0,n.numberActiveTouches=0,n._accountsForMovesUpTo=0},_updateGestureStateOnMove:function(n,o){n.numberActiveTouches=o.numberActiveTouches,n.moveX=t(o,n._accountsForMovesUpTo),n.moveY=u(o,n._accountsForMovesUpTo);var p=n._accountsForMovesUpTo,v=s(o,p),h=t(o,p),S=c(o,p),R=u(o,p),l=n.dx+(h-v),T=n.dy+(R-S),f=o.mostRecentTimeStamp-n._accountsForMovesUpTo;n.vx=(l-n.dx)/f,n.vy=(T-n.dy)/f,n.dx=l,n.dy=T,n._accountsForMovesUpTo=o.mostRecentTimeStamp},create:function(o){var t={handle:null},u={stateID:Math.random()};return h._initializeGestureState(u),{panHandlers:{onStartShouldSetResponder:function(n){return void 0!==o.onStartShouldSetPanResponder&&o.onStartShouldSetPanResponder(n,u)},onMoveShouldSetResponder:function(n){return void 0!==o.onMoveShouldSetPanResponder&&o.onMoveShouldSetPanResponder(n,u)},onStartShouldSetResponderCapture:function(n){return 1===n.nativeEvent.touches.length&&h._initializeGestureState(u),u.numberActiveTouches=n.touchHistory.numberActiveTouches,void 0!==o.onStartShouldSetPanResponderCapture&&o.onStartShouldSetPanResponderCapture(n,u)},onMoveShouldSetResponderCapture:function(n){var t=n.touchHistory;return u._accountsForMovesUpTo!==t.mostRecentTimeStamp&&(h._updateGestureStateOnMove(u,t),!!o.onMoveShouldSetPanResponderCapture&&o.onMoveShouldSetPanResponderCapture(n,u))},onResponderGrant:function(s){return t.handle||(t.handle=n.createInteractionHandle()),u.x0=p(s.touchHistory),u.y0=v(s.touchHistory),u.dx=0,u.dy=0,o.onPanResponderGrant&&o.onPanResponderGrant(s,u),void 0===o.onShouldBlockNativeResponder||o.onShouldBlockNativeResponder()},onResponderReject:function(n){S(t,o.onPanResponderReject,n,u)},onResponderRelease:function(n){S(t,o.onPanResponderRelease,n,u),h._initializeGestureState(u)},onResponderStart:function(n){var t=n.touchHistory;u.numberActiveTouches=t.numberActiveTouches,o.onPanResponderStart&&o.onPanResponderStart(n,u)},onResponderMove:function(n){var t=n.touchHistory;u._accountsForMovesUpTo!==t.mostRecentTimeStamp&&(h._updateGestureStateOnMove(u,t),o.onPanResponderMove&&o.onPanResponderMove(n,u))},onResponderEnd:function(n){var s=n.touchHistory;u.numberActiveTouches=s.numberActiveTouches,S(t,o.onPanResponderEnd,n,u)},onResponderTerminate:function(n){S(t,o.onPanResponderTerminate,n,u),h._initializeGestureState(u)},onResponderTerminationRequest:function(n){return void 0===o.onPanResponderTerminationRequest||o.onPanResponderTerminationRequest(n,u)}},getInteractionHandle:function(){return t.handle}}}};function S(o,t,u,s){o.handle&&(n.clearInteractionHandle(o.handle),o.handle=null),t&&t(u,s)}m.exports=h},266,[195,267]);
-__d(function(g,r,i,a,m,e,d){var n={centroidDimension:function(t,o,u,c){var f=t.touchBank,s=0,h=0,v=1===t.numberActiveTouches?t.touchBank[t.indexOfSingleActiveTouch]:null;if(null!==v)v.touchActive&&v.currentTimeStamp>o&&(s+=c&&u?v.currentPageX:c&&!u?v.currentPageY:!c&&u?v.previousPageX:v.previousPageY,h=1);else for(var C=0;C<f.length;C++){var l=f[C];if(null!==l&&void 0!==l&&l.touchActive&&l.currentTimeStamp>=o){s+=c&&u?l.currentPageX:c&&!u?l.currentPageY:!c&&u?l.previousPageX:l.previousPageY,h++}}return h>0?s/h:n.noCentroid},currentCentroidXOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!0,!0)},currentCentroidYOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!1,!0)},previousCentroidXOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!0,!1)},previousCentroidYOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!1,!1)},currentCentroidX:function(t){return n.centroidDimension(t,0,!0,!0)},currentCentroidY:function(t){return n.centroidDimension(t,0,!1,!0)},noCentroid:-1};m.exports=n},267,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),c=(function(n){function c(t,n){var s;return babelHelpers.classCallCheck(this,c),(s=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(c).call(this,t,n)))._listViewRef=null,s._shouldBounceFirstRowOnMount=!1,s._onScroll=function(t){s.props.dataSource.getOpenRowID()&&s.setState({dataSource:s.state.dataSource.setOpenRowID(null)}),s.props.onScroll&&s.props.onScroll(t)},s._renderRow=function(t,n,c){var l=s.props.renderQuickActions(t,n,c);if(!l)return s.props.renderRow(t,n,c);var p=!1;return s._shouldBounceFirstRowOnMount&&(s._shouldBounceFirstRowOnMount=!1,p=c===s.props.dataSource.getFirstRowID()),o.createElement(u,{slideoutView:l,isOpen:t.id===s.props.dataSource.getOpenRowID(),maxSwipeDistance:s._getMaxSwipeDistance(t,n,c),key:c,onOpen:function(){return s._onOpen(t.id)},onClose:function(){return s._onClose(t.id)},onSwipeEnd:function(){return s._setListViewScrollable(!0)},onSwipeStart:function(){return s._setListViewScrollable(!1)},shouldBounceOnMount:p},s.props.renderRow(t,n,c))},s._shouldBounceFirstRowOnMount=s.props.bounceFirstRowOnMount,s.state={dataSource:s.props.dataSource},s}return babelHelpers.inherits(c,n),babelHelpers.createClass(c,null,[{key:"getNewDataSource",value:function(){return new s({getRowData:function(t,n,o){return t[n][o]},getSectionHeaderData:function(t,n){return t[n]},rowHasChanged:function(t,n){return t!==n},sectionHeaderHasChanged:function(t,n){return t!==n}})}}]),babelHelpers.createClass(c,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.state.dataSource.getDataSource()!==t.dataSource.getDataSource()&&this.setState({dataSource:t.dataSource})}},{key:"render",value:function(){var n=this;return o.createElement(t,babelHelpers.extends({},this.props,{ref:function(t){n._listViewRef=t},dataSource:this.state.dataSource.getDataSource(),onScroll:this._onScroll,renderRow:this._renderRow}))}},{key:"_setListViewScrollable",value:function(t){this._listViewRef&&'function'==typeof this._listViewRef.setNativeProps&&this._listViewRef.setNativeProps({scrollEnabled:t})}},{key:"getScrollResponder",value:function(){if(this._listViewRef&&'function'==typeof this._listViewRef.getScrollResponder)return this._listViewRef.getScrollResponder()}},{key:"_getMaxSwipeDistance",value:function(t,n,o){return'function'==typeof this.props.maxSwipeDistance?this.props.maxSwipeDistance(t,n,o):this.props.maxSwipeDistance}},{key:"_onOpen",value:function(t){this.setState({dataSource:this.state.dataSource.setOpenRowID(t)})}},{key:"_onClose",value:function(t){this.setState({dataSource:this.state.dataSource.setOpenRowID(null)})}}]),c})(o.Component);c.propTypes={bounceFirstRowOnMount:n.bool.isRequired,dataSource:n.instanceOf(s).isRequired,maxSwipeDistance:n.oneOfType([n.number,n.func]).isRequired,renderRow:n.func.isRequired,renderQuickActions:n.func.isRequired},c.defaultProps={bounceFirstRowOnMount:!1,renderQuickActions:function(){return null}},m.exports=c},268,[218,94,97,269,265]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=(function(){function n(s){var o=this;babelHelpers.classCallCheck(this,n),this._dataSource=new t({getRowData:s.getRowData,getSectionHeaderData:s.getSectionHeaderData,rowHasChanged:function(t,n){return t.id!==o._previousOpenRowID&&n.id===o._openRowID||t.id===o._previousOpenRowID&&n.id!==o._openRowID||s.rowHasChanged(t,n)},sectionHeaderHasChanged:s.sectionHeaderHasChanged})}return babelHelpers.createClass(n,[{key:"cloneWithRowsAndSections",value:function(t,n,s){return this._dataSource=this._dataSource.cloneWithRowsAndSections(t,n,s),this._dataBlob=t,this.rowIdentities=this._dataSource.rowIdentities,this.sectionIdentities=this._dataSource.sectionIdentities,this}},{key:"getDataSource",value:function(){return this._dataSource}},{key:"getOpenRowID",value:function(){return this._openRowID}},{key:"getFirstRowID",value:function(){return this.rowIdentities?this.rowIdentities[0]&&this.rowIdentities[0][0]:Object.keys(this._dataBlob)[0]}},{key:"getLastRowID",value:function(){if(this.rowIdentities&&this.rowIdentities.length){var t=this.rowIdentities[this.rowIdentities.length-1];if(t&&t.length)return t[t.length-1]}return Object.keys(this._dataBlob)[this._dataBlob.length-1]}},{key:"setOpenRowID",value:function(t){return this._previousOpenRowID=this._openRowID,this._openRowID=t,this._dataSource=this._dataSource.cloneWithRowsAndSections(this._dataBlob,this.sectionIdentities,this.rowIdentities),this}}]),n})();m.exports=n},269,[220]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),l=r(d[2]),n=r(d[3]),p=(function(s){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(n,{style:[this.props.style,o.tabGroup]},this.props.children)}}]),l})(t.Component);p.Item=l;var o=s.create({tabGroup:{flex:1}});m.exports=p},270,[97,98,271,119]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),l=r(d[2]),o=(function(l){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,l),babelHelpers.createClass(o,[{key:"render",value:function(){return this.props.selected?t.createElement(s,{style:[this.props.style,n.tab]},this.props.children):t.createElement(s,null)}}]),o})(t.Component),n=l.create({tab:{top:0,right:0,bottom:0,left:0,borderColor:'red',borderWidth:1}});m.exports=o},271,[97,119,98]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]),s=r(d[1]),o=r(d[2]),l=r(d[3]),c=(r(d[4]),r(d[5])),u=r(d[6]),p=r(d[7]),h=r(d[8]),f=r(d[9]),b=r(d[10]),y=r(d[11]),v=r(d[12]),_=r(d[13]),S=r(d[14]),x=r(d[15]),C=r(d[16]),T=r(d[17]),I=r(d[18]),R=r(d[19]);r(d[20]);t=R('AndroidTextInput');var F=['phoneNumber','link','address','calendarEvent','none','all','ortography','spelling','grammar','quote','dash','replacement','correction','regularExpression','transitInformation'],N=u({displayName:'TextInput',statics:{State:{currentlyFocusedField:v.currentlyFocusedField,focusTextInput:v.focusTextInput,blurTextInput:v.blurTextInput}},propTypes:babelHelpers.objectSpread({},C,{autoCapitalize:p.oneOf(['none','sentences','words','characters']),autoCorrect:p.bool,spellCheck:p.bool,autoFocus:p.bool,allowFontScaling:p.bool,editable:p.bool,keyboardType:p.oneOf(['default','email-address','numeric','phone-pad','number-pad','ascii-capable','numbers-and-punctuation','url','name-phone-pad','decimal-pad','twitter','web-search','visible-password']),keyboardAppearance:p.oneOf(['default','light','dark']),returnKeyType:p.oneOf(['done','go','next','search','send','none','previous','default','emergency-call','google','join','route','yahoo']),returnKeyLabel:p.string,maxLength:p.number,numberOfLines:p.number,disableFullscreenUI:p.bool,enablesReturnKeyAutomatically:p.bool,multiline:p.bool,textBreakStrategy:p.oneOf(['simple','highQuality','balanced']),onBlur:p.func,onFocus:p.func,onChange:p.func,onChangeText:p.func,onContentSizeChange:p.func,onTextInput:p.func,onEndEditing:p.func,onSelectionChange:p.func,onSubmitEditing:p.func,onKeyPress:p.func,onLayout:p.func,onScroll:p.func,placeholder:p.string,placeholderTextColor:n,scrollEnabled:p.bool,secureTextEntry:p.bool,selectionColor:n,selectionState:p.instanceOf(s),selection:p.shape({start:p.number.isRequired,end:p.number}),value:p.string,defaultValue:p.string,clearButtonMode:p.oneOf(['never','while-editing','unless-editing','always']),clearTextOnFocus:p.bool,selectTextOnFocus:p.bool,blurOnSubmit:p.bool,style:b.propTypes.style,underlineColorAndroid:n,inlineImageLeft:p.string,inlineImagePadding:p.number,dataDetectorTypes:p.oneOfType([p.oneOf(F),p.arrayOf(p.oneOf(F))]),caretHidden:p.bool,contextMenuHidden:p.bool,inputAccessoryViewID:p.string,textContentType:p.oneOf(['none','URL','addressCity','addressCityAndState','addressState','countryName','creditCardNumber','emailAddress','familyName','fullStreetAddress','givenName','jobTitle','location','middleName','name','namePrefix','nameSuffix','nickname','organizationName','postalCode','streetAddressLine1','streetAddressLine2','sublocality','telephoneNumber','username','password'])}),getDefaultProps:function(){return{allowFontScaling:!0,underlineColorAndroid:'transparent'}},mixins:[l,_],isFocused:function(){return v.currentlyFocusedField()===h.findNodeHandle(this._inputRef)},getTextViewHandle:function(){return h.findNodeHandle(this._inputRef)},_inputRef:void 0,_focusSubscription:void 0,_lastNativeText:void 0,_lastNativeSelection:void 0,componentDidMount:function(){var t=this;this._lastNativeText=this.props.value;var n=h.findNodeHandle(this._inputRef);null!=n&&v.registerInput(n),this.context.focusEmitter?(this._focusSubscription=this.context.focusEmitter.addListener('focus',function(n){t===n?t.requestAnimationFrame(t.focus):t.isFocused()&&t.blur()}),this.props.autoFocus&&this.context.onFocusRequested(this)):this.props.autoFocus&&this.requestAnimationFrame(this.focus)},componentWillUnmount:function(){this._focusSubscription&&this._focusSubscription.remove(),this.isFocused()&&this.blur();var t=h.findNodeHandle(this._inputRef);null!=t&&v.unregisterInput(t)},contextTypes:{onFocusRequested:p.func,focusEmitter:p.instanceOf(o)},clear:function(){this.setNativeProps({text:''})},render:function(){var t;return t=this._renderAndroid(),c.createElement(y.Provider,{value:!0},t)},_getText:function(){return'string'==typeof this.props.value?this.props.value:'string'==typeof this.props.defaultValue?this.props.defaultValue:''},_setNativeRef:function(t){this._inputRef=t},_renderIOSLegacy:function(){var t,n=babelHelpers.extends({},this.props);if(n.style=[this.props.style],n.selection&&null==n.selection.end&&(n.selection={start:n.selection.start,end:n.selection.start}),n.multiline){var s=n.children,o=0;c.Children.forEach(s,function(){return++o}),I(!(n.value&&o),'Cannot specify both value and children.'),o>=1&&(s=c.createElement(b,{style:n.style,allowFontScaling:n.allowFontScaling},s)),n.inputView&&(s=[s,n.inputView]),n.style.unshift(H.multilineInput),t=c.createElement(void 0,babelHelpers.extends({ref:this._setNativeRef},n,{children:s,onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onContentSizeChange:this.props.onContentSizeChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,onSelectionChangeShouldSetResponder:T.thatReturnsTrue,text:this._getText(),dataDetectorTypes:this.props.dataDetectorTypes,onScroll:this._onScroll}))}else t=c.createElement(void 0,babelHelpers.extends({ref:this._setNativeRef},n,{onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onSelectionChange:this._onSelectionChange,onSelectionChangeShouldSetResponder:T.thatReturnsTrue,text:this._getText()}));return c.createElement(S,{onLayout:n.onLayout,onPress:this._onPress,rejectResponderTermination:!0,accessible:n.accessible,accessibilityLabel:n.accessibilityLabel,accessibilityHint:n.accessibilityHint,accessibilityRole:n.accessibilityRole,accessibilityStates:n.accessibilityStates,nativeID:this.props.nativeID,testID:n.testID},t)},_renderIOS:function(){var t=babelHelpers.extends({},this.props);t.style=[this.props.style],t.selection&&null==t.selection.end&&(t.selection={start:t.selection.start,end:t.selection.start});var n=void t.multiline;t.multiline&&t.style.unshift(H.multilineInput);var s=c.createElement(n,babelHelpers.extends({ref:this._setNativeRef},t,{onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onContentSizeChange:this.props.onContentSizeChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,onSelectionChangeShouldSetResponder:T.thatReturnsTrue,text:this._getText(),dataDetectorTypes:this.props.dataDetectorTypes,onScroll:this._onScroll}));return c.createElement(S,{onLayout:t.onLayout,onPress:this._onPress,rejectResponderTermination:!0,accessible:t.accessible,accessibilityLabel:t.accessibilityLabel,accessibilityRole:t.accessibilityRole,accessibilityStates:t.accessibilityStates,nativeID:this.props.nativeID,testID:t.testID},s)},_renderAndroid:function(){var n=babelHelpers.extends({},this.props);n.style=[this.props.style],n.autoCapitalize=x.AndroidTextInput.Constants.AutoCapitalizationType[n.autoCapitalize||'sentences'];var s=this.props.children,o=0;c.Children.forEach(s,function(){return++o}),I(!(this.props.value&&o),'Cannot specify both value and children.'),o>1&&(s=c.createElement(b,null,s)),n.selection&&null==n.selection.end&&(n.selection={start:n.selection.start,end:n.selection.start});var l=c.createElement(t,babelHelpers.extends({ref:this._setNativeRef},n,{mostRecentEventCount:0,onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,text:this._getText(),children:s,disableFullscreenUI:this.props.disableFullscreenUI,textBreakStrategy:this.props.textBreakStrategy,onScroll:this._onScroll}));return c.createElement(S,{onLayout:n.onLayout,onPress:this._onPress,accessible:this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,nativeID:this.props.nativeID,testID:this.props.testID},l)},_renderWindows:function(){var t=babelHelpers.extends({},this.props);return t.style=[H.input,this.props.style],c.createElement(RCTTextInput,babelHelpers.extends({ref:this._setNativeRef},t,{text:this._getText()}))},_onFocus:function(t){v.setFocusedTextInput(h.findNodeHandle(this._inputRef)),this.props.onFocus&&this.props.onFocus(t),this.props.selectionState&&this.props.selectionState.focus()},_onPress:function(t){(this.props.editable||void 0===this.props.editable)&&this.focus()},_onChange:function(t){this._inputRef&&this._inputRef.setNativeProps({mostRecentEventCount:t.nativeEvent.eventCount});var n=t.nativeEvent.text;this.props.onChange&&this.props.onChange(t),this.props.onChangeText&&this.props.onChangeText(n),this._inputRef&&(this._lastNativeText=n,this.forceUpdate())},_onSelectionChange:function(t){this.props.onSelectionChange&&this.props.onSelectionChange(t),this._inputRef&&(this._lastNativeSelection=t.nativeEvent.selection,(this.props.selection||this.props.selectionState)&&this.forceUpdate())},componentDidUpdate:function(){var t={};this._lastNativeText!==this.props.value&&'string'==typeof this.props.value&&(t.text=this.props.value);var n=this.props.selection;this._lastNativeSelection&&n&&(this._lastNativeSelection.start!==n.start||this._lastNativeSelection.end!==n.end)&&(t.selection=this.props.selection),Object.keys(t).length>0&&this._inputRef&&this._inputRef.setNativeProps(t),this.props.selectionState&&n&&this.props.selectionState.update(n.start,n.end)},_onBlur:function(t){v.clearFocusedTextInput(h.findNodeHandle(this._inputRef)),this.props.onBlur&&this.props.onBlur(t),this.props.selectionState&&this.props.selectionState.blur()},_onTextInput:function(t){this.props.onTextInput&&this.props.onTextInput(t)},_onScroll:function(t){this.props.onScroll&&this.props.onScroll(t)}}),E=((function(t){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}babelHelpers.inherits(n,t),babelHelpers.createClass(n,[{key:"clear",value:function(){}},{key:"isFocused",value:function(){}}])})(h.NativeComponent),N),H=f.create({multilineInput:{paddingTop:5}});m.exports=E},272,[104,273,11,155,43,97,161,94,25,98,133,120,90,183,182,83,157,15,6,122,47]);
-__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=(function(){function s(t,f){babelHelpers.classCallCheck(this,s),this._anchorOffset=t,this._focusOffset=f,this._hasFocus=!1}return babelHelpers.createClass(s,[{key:"update",value:function(s,t){this._anchorOffset===s&&this._focusOffset===t||(this._anchorOffset=s,this._focusOffset=t,this.emit('update'))}},{key:"constrainLength",value:function(s){this.update(Math.min(this._anchorOffset,s),Math.min(this._focusOffset,s))}},{key:"focus",value:function(){this._hasFocus||(this._hasFocus=!0,this.emit('focus'))}},{key:"blur",value:function(){this._hasFocus&&(this._hasFocus=!1,this.emit('blur'))}},{key:"hasFocus",value:function(){return this._hasFocus}},{key:"isCollapsed",value:function(){return this._anchorOffset===this._focusOffset}},{key:"isBackward",value:function(){return this._anchorOffset>this._focusOffset}},{key:"getAnchorOffset",value:function(){return this._hasFocus?this._anchorOffset:null}},{key:"getFocusOffset",value:function(){return this._hasFocus?this._focusOffset:null}},{key:"getStartOffset",value:function(){return this._hasFocus?Math.min(this._anchorOffset,this._focusOffset):null}},{key:"getEndOffset",value:function(){return this._hasFocus?Math.max(this._anchorOffset,this._focusOffset):null}},{key:"overlaps",value:function(s,t){return this.hasFocus()&&this.getStartOffset()<=t&&s<=this.getEndOffset()}}]),s})();s(t,{blur:!0,focus:!0,update:!0}),m.exports=t},273,[274]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),_=r(d[3]),o=r(d[4])({__types:!0});var v={emit:function(t,n,s,_,o,v,E){return this.__getEventEmitter().emit(t,n,s,_,o,v,E)},emitAndHold:function(t,n,s,_,o,v,E){return this.__getEventEmitter().emitAndHold(t,n,s,_,o,v,E)},addListener:function(t,n,s){return this.__getEventEmitter().addListener(t,n,s)},once:function(t,n,s){return this.__getEventEmitter().once(t,n,s)},addRetroactiveListener:function(t,n,s){return this.__getEventEmitter().addRetroactiveListener(t,n,s)},addListenerMap:function(t,n){return this.__getEventEmitter().addListenerMap(t,n)},addRetroactiveListenerMap:function(t,n){return this.__getEventEmitter().addListenerMap(t,n)},removeAllListeners:function(){this.__getEventEmitter().removeAllListeners()},removeCurrentListener:function(){this.__getEventEmitter().removeCurrentListener()},releaseHeldEventType:function(t){this.__getEventEmitter().releaseHeldEventType(t)},__getEventEmitter:function(){if(!this.__eventEmitter){var _=new t,o=new s;this.__eventEmitter=new n(_,o)}return this.__eventEmitter}};m.exports=function(t,n){_(n,'Must supply set of valid event types');var s=t.prototype||t;_(!s.__eventEmitter,'An active emitter is already mixed in');var E=t.constructor;E&&_(E===Object||E===Function,'Mix EventEmitter into a class, not an instance'),s.hasOwnProperty(o)?babelHelpers.extends(s.__types,n):s.__types?s.__types=babelHelpers.extends({},s.__types,n):s.__types=n,babelHelpers.extends(s,v)}},274,[11,275,276,6,277]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=(function(){function t(n,s){babelHelpers.classCallCheck(this,t),this._emitter=n,this._eventHolder=s,this._currentEventToken=null,this._emittingHeldEvents=!1}return babelHelpers.createClass(t,[{key:"addListener",value:function(t,n,s){return this._emitter.addListener(t,n,s)}},{key:"once",value:function(t,n,s){return this._emitter.once(t,n,s)}},{key:"addRetroactiveListener",value:function(t,n,s){var l=this._emitter.addListener(t,n,s);return this._emittingHeldEvents=!0,this._eventHolder.emitToListener(t,n,s),this._emittingHeldEvents=!1,l}},{key:"removeAllListeners",value:function(t){this._emitter.removeAllListeners(t)}},{key:"removeCurrentListener",value:function(){this._emitter.removeCurrentListener()}},{key:"listeners",value:function(t){return this._emitter.listeners(t)}},{key:"emit",value:function(t){for(var n,s=arguments.length,l=new Array(s>1?s-1:0),o=1;o<s;o++)l[o-1]=arguments[o];(n=this._emitter).emit.apply(n,[t].concat(l))}},{key:"emitAndHold",value:function(t){for(var n,s,l=arguments.length,o=new Array(l>1?l-1:0),u=1;u<l;u++)o[u-1]=arguments[u];this._currentEventToken=(n=this._eventHolder).holdEvent.apply(n,[t].concat(o)),(s=this._emitter).emit.apply(s,[t].concat(o)),this._currentEventToken=null}},{key:"releaseCurrentEvent",value:function(){this._currentEventToken?this._eventHolder.releaseEvent(this._currentEventToken):this._emittingHeldEvents&&this._eventHolder.releaseCurrentEvent()}},{key:"releaseHeldEventType",value:function(t){this._eventHolder.releaseEventType(t)}}]),t})();m.exports=t},275,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=(function(){function n(){babelHelpers.classCallCheck(this,n),this._heldEvents={},this._currentEventKey=null}return babelHelpers.createClass(n,[{key:"holdEvent",value:function(t){this._heldEvents[t]=this._heldEvents[t]||[];for(var n=this._heldEvents[t],s={eventType:t,index:n.length},l=arguments.length,v=new Array(l>1?l-1:0),h=1;h<l;h++)v[h-1]=arguments[h];return n.push(v),s}},{key:"emitToListener",value:function(t,n,s){var l=this,v=this._heldEvents[t];if(v){var h=this._currentEventKey;v.forEach(function(v,h){v&&(l._currentEventKey={eventType:t,index:h},n.apply(s,v))}),this._currentEventKey=h}}},{key:"releaseCurrentEvent",value:function(){t(null!==this._currentEventKey,'Not in an emitting cycle; there is no current event'),this._currentEventKey&&this.releaseEvent(this._currentEventKey)}},{key:"releaseEvent",value:function(t){delete this._heldEvents[t.eventType][t.index]}},{key:"releaseEventType",value:function(t){this._heldEvents[t]=[]}}]),n})();m.exports=n},276,[6]);
-__d(function(g,r,i,a,m,e,d){"use strict";m.exports=function(n){var t;for(t in n)if(n.hasOwnProperty(t))return t;return null}},277,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).ToastAndroid,o={SHORT:t.SHORT,LONG:t.LONG,TOP:t.TOP,BOTTOM:t.BOTTOM,CENTER:t.CENTER,show:function(o,s){t.show(o,s)},showWithGravity:function(o,s,O){t.showWithGravity(o,s,O)},showWithGravityAndOffset:function(o,s,O,n,T){t.showWithGravityAndOffset(o,s,O,n,T)}};m.exports=o},278,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),p=r(d[5]),c=r(d[6])('AndroidViewPager'),h='viewPager',b=(function(n){function s(){var n,c;babelHelpers.classCallCheck(this,s);for(var b=arguments.length,u=new Array(b),P=0;P<b;P++)u[P]=arguments[P];return(c=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(s)).call.apply(n,[this].concat(u)))).getInnerViewNode=function(){return c.refs[h].getInnerViewNode()},c._childrenWithOverridenStyle=function(){return t.Children.map(c.props.children,function(n){if(!n)return null;var o=babelHelpers.objectSpread({},n.props,{style:[n.props.style,{position:'absolute',left:0,top:0,right:0,bottom:0,width:void 0,height:void 0}],collapsable:!1});return n.type&&n.type.displayName&&'RCTView'!==n.type.displayName&&'View'!==n.type.displayName&&console.warn('Each ViewPager child must be a <View>. Was '+n.type.displayName),t.createElement(n.type,o)})},c._onPageScroll=function(t){c.props.onPageScroll&&c.props.onPageScroll(t),'on-drag'===c.props.keyboardDismissMode&&p()},c._onPageScrollStateChanged=function(t){c.props.onPageScrollStateChanged&&c.props.onPageScrollStateChanged(t.nativeEvent.pageScrollState)},c._onPageSelected=function(t){c.props.onPageSelected&&c.props.onPageSelected(t)},c.setPage=function(t){l.dispatchViewManagerCommand(o.findNodeHandle(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(c))),l.AndroidViewPager.Commands.setPage,[t])},c.setPageWithoutAnimation=function(t){l.dispatchViewManagerCommand(o.findNodeHandle(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(c))),l.AndroidViewPager.Commands.setPageWithoutAnimation,[t])},c}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"componentDidMount",value:function(){null!=this.props.initialPage&&this.setPageWithoutAnimation(this.props.initialPage)}},{key:"render",value:function(){return t.createElement(c,babelHelpers.extends({},this.props,{ref:h,style:this.props.style,onPageScroll:this._onPageScroll,onPageScrollStateChanged:this._onPageScrollStateChanged,onPageSelected:this._onPageSelected,children:this._childrenWithOverridenStyle()}))}}]),s})(t.Component);b.propTypes=babelHelpers.objectSpread({},s,{initialPage:n.number,onPageScroll:n.func,onPageScrollStateChanged:n.func,onPageSelected:n.func,pageMargin:n.number,keyboardDismissMode:n.oneOf(['none','on-drag']),scrollEnabled:n.bool,peekEnabled:n.bool}),m.exports=b},279,[97,94,25,83,157,164,122]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),p=r(d[5]),c=r(d[6]),h=r(d[7]),u=r(d[8]),b=r(d[9]),v=r(d[10]),f=r(d[11]),w=r(d[12]),E=r(d[13]),S='webview',C=f({IDLE:null,LOADING:null,ERROR:null}),y=function(){return o.createElement(h,{style:V.loadingView},o.createElement(n,{style:V.loadingProgressBar}))},L=(function(t){function n(){var t,o;babelHelpers.classCallCheck(this,n);for(var s=arguments.length,p=new Array(s),h=0;h<s;h++)p[h]=arguments[h];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(n)).call.apply(t,[this].concat(p)))).state={viewState:C.IDLE,lastErrorEvent:null,startInLoadingState:!0},o.goForward=function(){c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.goForward,null)},o.goBack=function(){c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.goBack,null)},o.reload=function(){o.setState({viewState:C.LOADING}),c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.reload,null)},o.stopLoading=function(){c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.stopLoading,null)},o.postMessage=function(t){c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.postMessage,[String(t)])},o.injectJavaScript=function(t){c.dispatchViewManagerCommand(o.getWebViewHandle(),c.RCTWebView.Commands.injectJavaScript,[t])},o.updateNavigationState=function(t){o.props.onNavigationStateChange&&o.props.onNavigationStateChange(t.nativeEvent)},o.getWebViewHandle=function(){return l.findNodeHandle(o.refs[S])},o.onLoadingStart=function(t){var n=o.props.onLoadStart;n&&n(t),o.updateNavigationState(t)},o.onLoadingError=function(t){t.persist();var n=o.props,s=n.onError,l=n.onLoadEnd;s&&s(t),l&&l(t),console.warn('Encountered an error loading page',t.nativeEvent),o.setState({lastErrorEvent:t.nativeEvent,viewState:C.ERROR})},o.onLoadingFinish=function(t){var n=o.props,s=n.onLoad,l=n.onLoadEnd;s&&s(t),l&&l(t),o.setState({viewState:C.IDLE}),o.updateNavigationState(t)},o.onMessage=function(t){var n=o.props.onMessage;n&&n(t)},o}return babelHelpers.inherits(n,t),babelHelpers.createClass(n,[{key:"UNSAFE_componentWillMount",value:function(){this.props.startInLoadingState&&this.setState({viewState:C.LOADING})}},{key:"render",value:function(){var t=null;if(this.state.viewState===C.LOADING)t=(this.props.renderLoading||y)();else if(this.state.viewState===C.ERROR){var n=this.state.lastErrorEvent;t=this.props.renderError&&this.props.renderError(n.domain,n.code,n.description)}else this.state.viewState!==C.IDLE&&console.error('RCTWebView invalid state encountered: '+this.state.loading);var s=[V.container,this.props.style];this.state.viewState!==C.LOADING&&this.state.viewState!==C.ERROR||s.push(V.hidden);var l=this.props.source||{};this.props.html?l.html=this.props.html:this.props.url&&(l.uri=this.props.url),'POST'===l.method&&l.headers?console.warn('WebView: `source.headers` is not supported when using POST.'):'GET'===l.method&&l.body&&console.warn('WebView: `source.body` is not supported when using GET.');var p=this.props.nativeConfig||{},c=(this.props.originWhitelist||[]).map(b.originWhitelistToRegex),u=p.component||R,v=o.createElement(u,babelHelpers.extends({ref:S,key:"webViewKey",style:s,source:E(l),scalesPageToFit:this.props.scalesPageToFit,injectedJavaScript:this.props.injectedJavaScript,userAgent:this.props.userAgent,javaScriptEnabled:this.props.javaScriptEnabled,thirdPartyCookiesEnabled:this.props.thirdPartyCookiesEnabled,domStorageEnabled:this.props.domStorageEnabled,messagingEnabled:'function'==typeof this.props.onMessage,onMessage:this.onMessage,contentInset:this.props.contentInset,automaticallyAdjustContentInsets:this.props.automaticallyAdjustContentInsets,onContentSizeChange:this.props.onContentSizeChange,onLoadingStart:this.onLoadingStart,onLoadingFinish:this.onLoadingFinish,onLoadingError:this.onLoadingError,testID:this.props.testID,geolocationEnabled:this.props.geolocationEnabled,mediaPlaybackRequiresUserAction:this.props.mediaPlaybackRequiresUserAction,allowUniversalAccessFromFileURLs:this.props.allowUniversalAccessFromFileURLs,originWhitelist:c,mixedContentMode:this.props.mixedContentMode,saveFormDataDisabled:this.props.saveFormDataDisabled,urlPrefixesForDefaultIntent:this.props.urlPrefixesForDefaultIntent},p.props));return o.createElement(h,{style:V.container},v,t)}}]),n})(o.Component);L.propTypes=babelHelpers.objectSpread({},u,{renderError:s.func,renderLoading:s.func,onLoad:s.func,onLoadEnd:s.func,onLoadStart:s.func,onError:s.func,automaticallyAdjustContentInsets:s.bool,contentInset:t,onNavigationStateChange:s.func,onMessage:s.func,onContentSizeChange:s.func,startInLoadingState:s.bool,style:u.style,html:v(s.string,'Use the `source` prop instead.'),url:v(s.string,'Use the `source` prop instead.'),source:s.oneOfType([s.shape({uri:s.string,method:s.oneOf(['GET','POST']),headers:s.object,body:s.string}),s.shape({html:s.string,baseUrl:s.string}),s.number]),useWebKit:s.bool,javaScriptEnabled:s.bool,thirdPartyCookiesEnabled:s.bool,domStorageEnabled:s.bool,geolocationEnabled:s.bool,injectedJavaScript:s.string,scalesPageToFit:s.bool,userAgent:s.string,testID:s.string,mediaPlaybackRequiresUserAction:s.bool,allowUniversalAccessFromFileURLs:s.bool,originWhitelist:s.arrayOf(s.string),injectJavaScript:s.func,mixedContentMode:s.oneOf(['never','always','compatibility']),saveFormDataDisabled:s.bool,nativeConfig:s.shape({component:s.any,props:s.object,viewManager:s.object}),urlPrefixesForDefaultIntent:s.arrayOf(s.string)}),L.defaultProps={javaScriptEnabled:!0,thirdPartyCookiesEnabled:!0,scalesPageToFit:!0,saveFormDataDisabled:!1,originWhitelist:b.defaultOriginWhitelist};var R=w('RCTWebView'),V=p.create({container:{flex:1},hidden:{height:0,flex:0},loadingView:{flex:1,justifyContent:'center',alignItems:'center'},loadingProgressBar:{height:20}});m.exports=L},280,[136,172,97,94,25,98,83,119,157,281,111,107,122,128]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n={defaultOriginWhitelist:['http://*','https://*'],extractOrigin:function(t){var n=/^[A-Za-z0-9]+:(\/\/)?[^/]*/.exec(t);return null===n?null:n[0]},originWhitelistToRegex:function(n){return t(n).replace(/\\\*/g,'.*')}};m.exports=n},281,[282]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=/[|\\{}()[\]^$+*?.]/g;m.exports=function(n){if('string'!=typeof n)throw new TypeError('Expected a string');return n.replace(t,'\\$&')}},282,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).ActionSheetManager,o=r(d[1]),n=r(d[2]),c={showActionSheetWithOptions:function(c,l){o('object'==typeof c&&null!==c,'Options must be a valid object'),o('function'==typeof l,'Must provide a valid callback'),t.showActionSheetWithOptions(babelHelpers.objectSpread({},c,{tintColor:n(c.tintColor)}),l)},showShareActionSheetWithOptions:function(c,l,s){o('object'==typeof c&&null!==c,'Options must be a valid object'),o('function'==typeof l,'Must provide a valid failureCallback'),o('function'==typeof s,'Must provide a valid successCallback'),t.showShareActionSheetWithOptions(babelHelpers.objectSpread({},c,{tintColor:n(c.tintColor)}),l,s)}};m.exports=c},283,[23,6,114]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]),n=r(d[2]).AppState,s=r(d[3]),l=r(d[4]),p=(function(t){function p(){var t;babelHelpers.classCallCheck(this,p),(t=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(p).call(this,n))).isAvailable=!0,t.isAvailable=!0,t._eventHandlers={change:new Map,memoryWarning:new Map},t.currentState=n.initialAppState||'active';var l=!1;return t.addListener('appStateDidChange',function(n){l=!0,t.currentState=n.app_state}),n.getCurrentAppState(function(n){l||t.currentState===n.app_state||(t.currentState=n.app_state,t.emit('appStateDidChange',n))},s),t}return babelHelpers.inherits(p,t),babelHelpers.createClass(p,[{key:"addEventListener",value:function(t,n){l(-1!==['change','memoryWarning'].indexOf(t),'Trying to subscribe to unknown event: "%s"',t),'change'===t?this._eventHandlers[t].set(n,this.addListener('appStateDidChange',function(t){n(t.app_state)})):'memoryWarning'===t&&this._eventHandlers[t].set(n,this.addListener('memoryWarning',n))}},{key:"removeEventListener",value:function(t,n){l(-1!==['change','memoryWarning'].indexOf(t),'Trying to remove listener for unknown event: "%s"',t),this._eventHandlers[t].has(n)&&(this._eventHandlers[t].get(n).remove(),this._eventHandlers[t].delete(n))}}]),p})(t);p=new p,m.exports=p},284,[54,55,23,74,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),s={exitApp:function(){t(!1,'BackAndroid is deprecated.  Please use BackHandler instead.'),n.exitApp()},addEventListener:function(s,c){return t(!1,'BackAndroid is deprecated.  Please use BackHandler instead.'),n.addEventListener(s,c)},removeEventListener:function(s,c){t(!1,'BackAndroid is deprecated.  Please use BackHandler instead.'),n.removeEventListener(s,c)}};m.exports=s},285,[149,47]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),s=(o.checkPropTypes,r(d[1]).CameraRollManager),t=r(d[2]),n=r(d[3]),l={Album:'Album',All:'All',Event:'Event',Faces:'Faces',Library:'Library',PhotoStream:'PhotoStream',SavedPhotos:'SavedPhotos'},u={All:'All',Videos:'Videos',Photos:'Photos'},p=(t({first:o.number.isRequired,after:o.string,groupTypes:o.oneOf(Object.keys(l)),groupName:o.string,assetType:o.oneOf(Object.keys(u)),mimeTypes:o.arrayOf(o.string)}),t({edges:o.arrayOf(t({node:t({type:o.string.isRequired,group_name:o.string.isRequired,image:t({uri:o.string.isRequired,height:o.number.isRequired,width:o.number.isRequired,isStored:o.bool,playableDuration:o.number.isRequired}).isRequired,timestamp:o.number.isRequired,location:t({latitude:o.number,longitude:o.number,altitude:o.number,heading:o.number,speed:o.number})}).isRequired})).isRequired,page_info:t({has_next_page:o.bool.isRequired,start_cursor:o.string,end_cursor:o.string}).isRequired}),(function(){function o(){babelHelpers.classCallCheck(this,o)}return babelHelpers.createClass(o,null,[{key:"saveImageWithTag",value:function(o){return console.warn('`CameraRoll.saveImageWithTag()` is deprecated. Use `CameraRoll.saveToCameraRoll()` instead.'),this.saveToCameraRoll(o,'photo')}},{key:"deletePhotos",value:function(o){return s.deletePhotos(o)}},{key:"saveToCameraRoll",value:function(o,t){n('string'==typeof o,'CameraRoll.saveToCameraRoll must be a valid string.'),n('photo'===t||'video'===t||void 0===t,"The second argument to saveToCameraRoll must be 'photo' or 'video'. You passed "+(t||'unknown'));var l='photo';return t?l=t:['mov','mp4'].indexOf(o.split('.').slice(-1)[0])>=0&&(l='video'),s.saveToCameraRoll(o,l)}},{key:"getPhotos",value:function(o){if(arguments.length>1){console.warn('CameraRoll.getPhotos(tag, success, error) is deprecated.  Use the returned Promise instead');var t=arguments[1],n=arguments[2]||function(){};s.getPhotos(o).then(t,n)}return s.getPhotos(o)}}]),o})());p.GroupTypesOptions=l,p.AssetTypeOptions=u,m.exports=p},286,[94,23,138,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).Clipboard;m.exports={getString:function(){return t.getString()},setString:function(n){t.setString(n)}}},287,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).DatePickerAndroid;function n(t,n){var c=t[n];'object'==typeof c&&'function'==typeof c.getMonth&&(t[n]=c.getTime())}var c=(function(){function c(){babelHelpers.classCallCheck(this,c)}return babelHelpers.createClass(c,null,[{key:"open",value:function(c){return regeneratorRuntime.async(function(o){for(;;)switch(o.prev=o.next){case 0:return c&&(n(c,'date'),n(c,'minDate'),n(c,'maxDate')),o.abrupt("return",t.open(c));case 3:case"end":return o.stop()}},null,this)}},{key:"dateSetAction",get:function(){return'dateSetAction'}},{key:"dismissedAction",get:function(){return'dismissedAction'}}]),c})();m.exports=c},288,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),c=r(d[2]),n=r(d[3]),l=((function(s){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}babelHelpers.inherits(o,s),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(n,{style:[l.dummyDatePickerMacOS,this.props.style]},t.createElement(c,{style:l.datePickerText},"DatePickerMacOS is not supported on this platform!"))}}])})(t.Component),s.create({dummyDatePickerMacOS:{height:100,width:300,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center',margin:10},datePickerText:{color:'#333333',margin:20}}));m.exports=DummyDatePickerMacOS},289,[97,98,133,119]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]).ImagePickerIOS,n={canRecordVideos:function(n){return o.canRecordVideos(n)},canUseCamera:function(n){return o.canUseCamera(n)},openCameraDialog:function(n,c,t){return n=babelHelpers.objectSpread({videoMode:!1},n),o.openCameraDialog(n,c,t)},openSelectDialog:function(n,c,t){return n=babelHelpers.objectSpread({showImages:!0,showVideos:!1},n),o.openSelectDialog(n,c,t)}};m.exports=n},290,[23]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=(r(d[1]),r(d[2]).PushNotificationManager),n=r(d[3]),c=new t(o),l=new Map,s=(function(){function t(o){var n=this;babelHelpers.classCallCheck(this,t),this._data={},this._remoteNotificationCompleteCallbackCalled=!1,this._isRemote=o.remote,this._isRemote&&(this._notificationId=o.notificationId),o.remote?Object.keys(o).forEach(function(t){var c=o[t];'aps'===t?(n._alert=c.alert,n._sound=c.sound,n._badgeCount=c.badge,n._category=c.category,n._contentAvailable=c['content-available'],n._threadID=c['thread-id']):n._data[t]=c}):(this._badgeCount=o.applicationIconBadgeNumber,this._sound=o.soundName,this._alert=o.alertBody,this._data=o.userInfo,this._category=o.category)}return babelHelpers.createClass(t,null,[{key:"presentLocalNotification",value:function(t){o.presentLocalNotification(t)}},{key:"scheduleLocalNotification",value:function(t){o.scheduleLocalNotification(t)}},{key:"cancelAllLocalNotifications",value:function(){o.cancelAllLocalNotifications()}},{key:"removeAllDeliveredNotifications",value:function(){o.removeAllDeliveredNotifications()}},{key:"getDeliveredNotifications",value:function(t){o.getDeliveredNotifications(t)}},{key:"removeDeliveredNotifications",value:function(t){o.removeDeliveredNotifications(t)}},{key:"setApplicationIconBadgeNumber",value:function(t){o.setApplicationIconBadgeNumber(t)}},{key:"getApplicationIconBadgeNumber",value:function(t){o.getApplicationIconBadgeNumber(t)}},{key:"cancelLocalNotifications",value:function(t){o.cancelLocalNotifications(t)}},{key:"getScheduledLocalNotifications",value:function(t){o.getScheduledLocalNotifications(t)}},{key:"addEventListener",value:function(o,s){var u;n('notification'===o||'register'===o||'registrationError'===o||'localNotification'===o,'PushNotificationIOS only supports `notification`, `register`, `registrationError`, and `localNotification` events'),'notification'===o?u=c.addListener("remoteNotificationReceived",function(o){s(new t(o))}):'localNotification'===o?u=c.addListener("localNotificationReceived",function(o){s(new t(o))}):'register'===o?u=c.addListener("remoteNotificationsRegistered",function(t){s(t.deviceToken)}):'registrationError'===o&&(u=c.addListener("remoteNotificationRegistrationError",function(t){s(t)})),l.set(o,u)}},{key:"removeEventListener",value:function(t,o){n('notification'===t||'register'===t||'registrationError'===t||'localNotification'===t,'PushNotificationIOS only supports `notification`, `register`, `registrationError`, and `localNotification` events');var c=l.get(t);c&&(c.remove(),l.delete(t))}},{key:"requestPermissions",value:function(t){var n={};return n=t?{alert:!!t.alert,badge:!!t.badge,sound:!!t.sound}:{alert:!0,badge:!0,sound:!0},o.requestPermissions(n)}},{key:"abandonPermissions",value:function(){o.abandonPermissions()}},{key:"checkPermissions",value:function(t){n('function'==typeof t,'Must provide a valid callback'),o.checkPermissions(t)}},{key:"getInitialNotification",value:function(){return o.getInitialNotification().then(function(o){return o&&new t(o)})}}]),babelHelpers.createClass(t,[{key:"finish",value:function(t){this._isRemote&&this._notificationId&&!this._remoteNotificationCompleteCallbackCalled&&(this._remoteNotificationCompleteCallbackCalled=!0,o.onFinishRemoteNotification(this._notificationId,t))}},{key:"getMessage",value:function(){return this._alert}},{key:"getSound",value:function(){return this._sound}},{key:"getCategory",value:function(){return this._category}},{key:"getAlert",value:function(){return this._alert}},{key:"getContentAvailable",value:function(){return this._contentAvailable}},{key:"getBadgeCount",value:function(){return this._badgeCount}},{key:"getData",value:function(){return this._data}},{key:"getThreadID",value:function(){return this._threadID}}]),t})();s.FetchResult={NewData:'UIBackgroundFetchResultNewData',NoData:'UIBackgroundFetchResultNoData',ResultFailed:'UIBackgroundFetchResultFailed'},m.exports=s},292,[55,43,23,6]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n={get:function(n){return console.warn('Settings is not yet supported on Android'),null},set:function(n){console.warn('Settings is not yet supported on Android')},watchKeys:function(n,t){return console.warn('Settings is not yet supported on Android'),-1},clearWatch:function(n){console.warn('Settings is not yet supported on Android')}};m.exports=n},293,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]),n=(r(d[2]),r(d[3])),s=(n.ActionSheetManager,n.ShareModule),o=(function(){function n(){babelHelpers.classCallCheck(this,n)}return babelHelpers.createClass(n,null,[{key:"share",value:function(n){var o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return t('object'==typeof n&&null!==n,'Content to share must be a valid object'),t('string'==typeof n.url||'string'==typeof n.message,'At least one of URL and message is required'),t('object'==typeof o&&null!==o,'Options must be a valid object'),t(!n.title||'string'==typeof n.title,'Invalid title: title should be a string.'),s.share(n,o.dialogTitle)}},{key:"sharedAction",get:function(){return'sharedAction'}},{key:"dismissedAction",get:function(){return'dismissedAction'}}]),n})();m.exports=o},294,[43,6,114,23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=new t('StatusBarManager')},295,[55]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).TimePickerAndroid,n=(function(){function n(){babelHelpers.classCallCheck(this,n)}return babelHelpers.createClass(n,null,[{key:"open",value:function(n){return regeneratorRuntime.async(function(s){for(;;)switch(s.prev=s.next){case 0:return s.abrupt("return",t.open(n));case 1:case"end":return s.stop()}},null,this)}},{key:"timeSetAction",get:function(){return'timeSetAction'}},{key:"dismissedAction",get:function(){return'dismissedAction'}}]),n})();m.exports=n},296,[23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).Vibration;r(d[1]);var n={vibrate:function(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:400,o=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if('number'==typeof n)t.vibrate(n);else{if(!Array.isArray(n))throw new Error('Vibration pattern should be a number or array');t.vibrateByPattern(n,o?0:-1)}},cancel:function(){t.cancel()}};m.exports=n},297,[23,43]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o={vibrate:function(){t('VibrationIOS is not supported on this platform!')}};m.exports=o},298,[47]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=n.StyleSheet,l=n.Text,s=n.View,b=(function(n){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(s,{style:c.container},t.createElement(l,{style:c.text},this.props.title))}}]),o})(t.Component),c=o.create({container:{borderRadius:4,borderWidth:.5,borderColor:'#d6d7da',margin:10,marginBottom:0,height:45,padding:10,backgroundColor:'white'},text:{fontSize:19,fontWeight:'500'}});m.exports=b},304,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),c=r(d[5]),p=r(d[6]),u=r(d[7]),h=r(d[8]),b=r(d[9]),y=(function(t){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var l=arguments.length,s=new Array(l),c=0;c<l;c++)s[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(s))))._onPress=function(){n.props.onPress?n.props.onPress():n.props.onNavigate(u.ExampleAction(n.props.item.key))},n}return babelHelpers.inherits(o,t),babelHelpers.createClass(o,[{key:"render",value:function(){var t=this.props.item,o=this.props.isSelected?v.selectedRow:v.row;return n.createElement(p,{onShowUnderlay:this.props.onShowUnderlay,onHideUnderlay:this.props.onHideUnderlay,accessibilityTraits:['group'],accessibilityLabel:t.module.title,onAccessibilityTap:this._onPress,acceptsKeyboardFocus:!1,onPress:this._onPress},n.createElement(b,{style:o},n.createElement(s,{style:v.rowTitleText},t.module.title),n.createElement(s,{style:v.rowDetailText},t.module.description)))}}]),o})(n.PureComponent),f=function(t){var o=t.section;return n.createElement(s,{style:v.sectionHeader},o.title)},C=(function(l){function s(){var t,o;babelHelpers.classCallCheck(this,s);for(var l=arguments.length,c=new Array(l),p=0;p<l;p++)c[p]=arguments[p];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(c))))._handleOnSelectionEntered=function(t){var n=t.key;o.props.onNavigate(u.ExampleAction(n))},o._renderItem=function(t){var l=t.item,s=t.isSelected,c=t.separators;return n.createElement(y,{item:l,isSelected:s,onNavigate:o.props.onNavigate,onShowUnderlay:c.highlight,onHideUnderlay:c.unhighlight})},o}return babelHelpers.inherits(s,l),babelHelpers.createClass(s,[{key:"render",value:function(){var l=this,s=this.props.persister.state.filter,c=new RegExp(String(s),'i'),p=function(n){return l.props.disableSearch||c.test(n.module.title)&&(!t.isTV||n.supportsTVOS)},u=[{data:this.props.list.ComponentExamples.filter(p),title:'COMPONENTS',key:'c'},{data:this.props.list.APIExamples.filter(p),title:'APIS',key:'a'}];return n.createElement(b,{style:[v.listContainer,this.props.style]},this._renderTitleRow(),this._renderTextInput(),n.createElement(o,{ItemSeparatorComponent:S,contentContainerStyle:{backgroundColor:'white'},style:v.list,sections:u,renderItem:this._renderItem,enableEmptySections:!0,enableSelectionOnKeyPress:!0,onSelectionEntered:this._handleOnSelectionEntered,itemShouldUpdate:this._itemShouldUpdate,keyboardShouldPersistTaps:"handled",automaticallyAdjustContentInsets:!1,keyboardDismissMode:"on-drag",legacyImplementation:!1,renderSectionHeader:f,accessibilityLabel:"RNTester Components",backgroundColor:void 0}))}},{key:"_itemShouldUpdate",value:function(t,n){return t.item!==n.item}},{key:"_renderTitleRow",value:function(){var t=this;return this.props.displayTitleRow?n.createElement(y,{item:{module:{title:'RNTester',description:'React Native Examples'}},onNavigate:this.props.onNavigate,onPress:function(){t.props.onNavigate(u.ExampleList())}}):null}},{key:"_renderTextInput",value:function(){var t=this;return this.props.disableSearch?null:n.createElement(b,{style:v.searchRow},n.createElement(c,{autoCapitalize:"none",autoCorrect:!1,clearButtonMode:"always",onChangeText:function(n){t.props.persister.setState(function(){return{filter:n}})},placeholder:"Search...",placeholderTextColor:void 0,underlineColorAndroid:"transparent",style:[v.searchTextInput,this.props.searchTextInputStyle],testID:"explorer_search",value:this.props.persister.state.filter}))}},{key:"_handleRowPress",value:function(t){this.props.onNavigate(u.ExampleAction(t))}}]),s})(n.Component),S=function(t){var o=t.highlighted;return n.createElement(b,{style:o?v.separatorHighlighted:v.separator})};C=h.createContainer(C,{cacheKeySuffix:function(){return'mainList'},getInitialState:function(){return{filter:''}}});var v=l.create({listContainer:{flex:1},list:{backgroundColor:'#eeeeee'},sectionHeader:babelHelpers.objectSpread({},{backgroundColor:'#eeeeee',color:'black'},{padding:5,fontWeight:'500',fontSize:11}),row:babelHelpers.objectSpread({},{backgroundColor:'white'},{justifyContent:'center',paddingHorizontal:15,paddingVertical:8}),selectedRow:{backgroundColor:'#DDECF8',justifyContent:'center',paddingHorizontal:15,paddingVertical:8},separator:babelHelpers.objectSpread({height:l.hairlineWidth},{backgroundColor:'#bbbbbb'},{marginLeft:15}),separatorHighlighted:{height:l.hairlineWidth,backgroundColor:'rgb(217, 217, 217)'},rowTitleText:babelHelpers.objectSpread({fontSize:17,fontWeight:'500'},{color:'black'}),rowDetailText:{fontSize:15,color:'#888888',lineHeight:20},searchRow:babelHelpers.objectSpread({},{backgroundColor:'#eeeeee'},{padding:10}),searchTextInput:babelHelpers.objectSpread({},{backgroundColor:'white',borderColor:'#cccccc'},{borderRadius:3,borderWidth:1,paddingLeft:8,paddingVertical:0,height:35})});m.exports=C},305,[43,85,239,98,133,272,181,168,306,119]);
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t=this;l.getSize(this.props.source.uri,function(n,o){t.setState({width:n,height:o})})},render:function(){return t.createElement(h,{style:{flexDirection:'row'}},t.createElement(l,{style:{width:60,height:60,backgroundColor:'transparent',marginRight:10},source:this.props.source}),t.createElement(u,null,"Actual dimensions:",'\n',"Width: ",this.state.width,", Height: ",this.state.height))}}),R=n({displayName:"MultipleSourcesExample",getInitialState:function(){return{width:30,height:30}},render:function(){return t.createElement(h,null,t.createElement(h,{style:{flexDirection:'row',justifyContent:'space-between'}},t.createElement(u,{style:S.touchableText,onPress:this.decreaseImageSize},"Decrease image size"),t.createElement(u,{style:S.touchableText,onPress:this.increaseImageSize},"Increase image size")),t.createElement(u,null,"Container image size: ",this.state.width,"x",this.state.height,' '),t.createElement(h,{style:{height:this.state.height,width:this.state.width}},t.createElement(l,{style:{flex:1},source:[{uri:'https://facebook.github.io/react-native/img/favicon.png',width:38,height:38},{uri:'https://facebook.github.io/react-native/img/favicon.png',width:76,height:76},{uri:'https://facebook.github.io/react-native/img/opengraph.png',width:400,height:400}]})))},increaseImageSize:function(){this.state.width>=100||this.setState({width:this.state.width+10,height:this.state.height+10})},decreaseImageSize:function(){this.state.width<=10||this.setState({width:this.state.width-10,height:this.state.height-10})}});e.displayName=void 0,e.framework='React',e.title='<Image>',e.description='Base component for displaying different types of images.',e.examples=[{title:'Plain Network Image',description:"If the `source` prop `uri` property is prefixed with \"http\", then it will be downloaded from the network.",render:function(){return t.createElement(l,{source:M,style:S.base})}},{title:'Plain Static Image',description:"Static assets should be placed in the source code tree, and required in the same way as JavaScript modules.",render:function(){return t.createElement(h,{style:S.horizontal},t.createElement(l,{source:r(d[4]),style:S.icon}),t.createElement(l,{source:r(d[5]),style:S.icon}),t.createElement(l,{source:r(d[6]),style:S.icon}),t.createElement(l,{source:r(d[7]),style:S.icon}))}},{title:'Image Loading Events',render:function(){return t.createElement(y,{source:{uri:'http://origami.design/public/images/bird-logo.png?r=1&t='+Date.now()},prefetchedSource:{uri:p}})}},{title:'Error Handler',render:function(){return t.createElement(w,{source:{uri:'https://TYPO_ERROR_facebook.github.io/react/logo-og.png'}})},platform:['ios','macos']},{title:'Image Download Progress',render:function(){return t.createElement(w,{source:{uri:'http://origami.design/public/images/bird-logo.png?r=1'}})},platform:['ios','macos']},{title:'defaultSource',description:'Show a placeholder image when a network image is loading',render:function(){return t.createElement(l,{defaultSource:r(d[8]),source:{uri:'https://facebook.github.io/origami/public/images/birds.jpg'},style:S.base})},platform:['ios','macos']},{title:'Cache Policy',description:"First image has never been loaded before and is instructed not to load unless in cache.Placeholder image from above will stay. 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t.createElement(h,{style:S.horizontal},t.createElement(l,{style:[S.base,{borderRadius:5}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{borderRadius:19}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{borderTopLeftRadius:20}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{borderWidth:10,borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'green'}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{borderWidth:5,borderTopLeftRadius:10,borderTopRightRadius:20,borderBottomRightRadius:30,borderBottomLeftRadius:40,borderColor:'red'}],source:M}))}},{title:'Background Color',render:function(){return t.createElement(h,{style:S.horizontal},t.createElement(l,{source:z,style:S.base}),t.createElement(l,{style:[S.base,S.leftMargin,{backgroundColor:'rgba(0, 0, 100, 0.25)'}],source:z}),t.createElement(l,{style:[S.base,S.leftMargin,{backgroundColor:'red'}],source:z}),t.createElement(l,{style:[S.base,S.leftMargin,{backgroundColor:'black'}],source:z}))}},{title:'Opacity',render:function(){return t.createElement(h,{style:S.horizontal},t.createElement(l,{style:[S.base,{opacity:1}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{opacity:.8}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{opacity:.6}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{opacity:.4}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{opacity:.2}],source:M}),t.createElement(l,{style:[S.base,S.leftMargin,{opacity:0}],source:M}))}},{title:'Nesting content inside <Image> component',render:function(){return t.createElement(h,{style:{width:60,height:60}},t.createElement(l,{style:babelHelpers.objectSpread({},c.absoluteFillObject),source:M}),t.createElement(u,{style:S.nestedText},"React"))}},{title:'Nesting content inside <ImageBackground> component',render:function(){return t.createElement(f,{style:{width:60,height:60,backgroundColor:'transparent'},source:M},t.createElement(u,{style:S.nestedText},"React"))}},{title:'Tint Color',description:"The `tintColor` style prop changes all the non-alpha pixels to the tint color.",render:function(){return t.createElement(h,null,t.createElement(h,{style:S.horizontal},t.createElement(l,{source:r(d[4]),style:[S.icon,{borderRadius:5,tintColor:'#5ac8fa'}]}),t.createElement(l,{source:r(d[4]),style:[S.icon,S.leftMargin,{borderRadius:5,tintColor:'#4cd964'}]}),t.createElement(l,{source:r(d[4]),style:[S.icon,S.leftMargin,{borderRadius:5,tintColor:'#ff2d55'}]}),t.createElement(l,{source:r(d[4]),style:[S.icon,S.leftMargin,{borderRadius:5,tintColor:'#8e8e93'}]})),t.createElement(u,{style:S.sectionText},"It also works with downloaded images:"),t.createElement(h,{style:S.horizontal},t.createElement(l,{source:z,style:[S.base,{borderRadius:5,tintColor:'#5ac8fa'}]}),t.createElement(l,{source:z,style:[S.base,S.leftMargin,{borderRadius:5,tintColor:'#4cd964'}]}),t.createElement(l,{source:z,style:[S.base,S.leftMargin,{borderRadius:5,tintColor:'#ff2d55'}]}),t.createElement(l,{source:z,style:[S.base,S.leftMargin,{borderRadius:5,tintColor:'#8e8e93'}]})))}},{title:'Resize Mode',description:"The `resizeMode` style prop controls how the image is rendered within the frame.",render:function(){return t.createElement(h,null,[z,M].map(function(n,o){return 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babelHelpers.inherits(c,n),babelHelpers.createClass(c,[{key:"renderSwitch",value:function(){return o.isTV?null:t.createElement(u,{value:this.state.transparent,onValueChange:this._toggleTransparent})}},{key:"render",value:function(){var n=this,s={backgroundColor:this.state.transparent?'rgba(0, 0, 0, 0.5)':'#f5fcff'},o=this.state.transparent?{backgroundColor:'#fff',padding:20}:null,c={backgroundColor:'#ddd'};return t.createElement(b,null,t.createElement(l,{animationType:this.state.animationType,presentationStyle:this.state.presentationStyle,transparent:this.state.transparent,visible:this.state.modalVisible,onRequestClose:function(){return n._setModalVisible(!1)},supportedOrientations:S[this.state.selectedSupportedOrientation],onOrientationChange:function(t){return n.setState({currentOrientation:t.nativeEvent.orientation})}},t.createElement(b,{style:[E.container,s]},t.createElement(b,{style:[E.innerContainer,o]},t.createElement(p,null,"This modal was presented",' ','none'===this.state.animationType?'without':'with',' ',"animation."),t.createElement(p,null,"It is currently displayed in ",this.state.currentOrientation,' ',"mode."),t.createElement(y,{onPress:this._setModalVisible.bind(this,!1),style:E.modalButton},"Close")))),t.createElement(b,{style:E.row},t.createElement(p,{style:E.rowTitle},"Animation Type"),t.createElement(y,{onPress:this._setAnimationType.bind(this,'none'),style:'none'===this.state.animationType?c:{}},"none"),t.createElement(y,{onPress:this._setAnimationType.bind(this,'slide'),style:'slide'===this.state.animationType?c:{}},"slide"),t.createElement(y,{onPress:this._setAnimationType.bind(this,'fade'),style:'fade'===this.state.animationType?c:{}},"fade")),t.createElement(b,{style:E.row},t.createElement(p,{style:E.rowTitle},"Transparent"),this.renderSwitch()),this.renderPickers(),t.createElement(y,{onPress:this._setModalVisible.bind(this,!0)},"Present"))}},{key:"renderPickers",value:function(){var n=this;return o.isTV?null:t.createElement(b,null,t.createElement(b,null,t.createElement(p,{style:E.rowTitle},"Presentation style"),t.createElement(s,{selectedValue:this.state.presentationStyle,onValueChange:function(t){return n.setState({presentationStyle:t})},itemStyle:E.pickerItem},t.createElement(f,{label:"Full Screen",value:"fullScreen"}),t.createElement(f,{label:"Page Sheet",value:"pageSheet"}),t.createElement(f,{label:"Form Sheet",value:"formSheet"}),t.createElement(f,{label:"Over Full Screen",value:"overFullScreen"}),t.createElement(f,{label:"Default presentationStyle",value:null}))),t.createElement(b,null,t.createElement(p,{style:E.rowTitle},"Supported orientations"),t.createElement(s,{selectedValue:this.state.selectedSupportedOrientation,onValueChange:function(t,l){return n.setState({selectedSupportedOrientation:l})},itemStyle:E.pickerItem},t.createElement(f,{label:"Portrait",value:0}),t.createElement(f,{label:"Landscape",value:1}),t.createElement(f,{label:"Landscape left",value:2}),t.createElement(f,{label:"Portrait and landscape right",value:3}),t.createElement(f,{label:"Portrait and landscape",value:4}),t.createElement(f,{label:"Default supportedOrientations",value:5}))))}}]),c})(t.Component);e.examples=[{title:'Modal Presentation',description:'Modals can be presented with or without animation',render:function(){return t.createElement(v,null)}}];var E=c.create({container:{flex:1,justifyContent:'center',padding:20},innerContainer:{borderRadius:10,alignItems:'center'},row:{alignItems:'center',flex:1,flexDirection:'row',marginBottom:20},rowTitle:{flex:1,fontWeight:'bold'},button:{borderRadius:5,flexGrow:1,height:44,alignSelf:'stretch',justifyContent:'center',overflow:'hidden'},buttonText:{fontSize:18,margin:5,textAlign:'center'},modalButton:{marginTop:10},pickerItem:{fontSize:16}})},336,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.FlatList,o=n.StyleSheet,s=n.Text,u=n.View,h=r(d[2]),c=r(d[3]),f=r(d[4]),p=f.FooterComponent,C=f.HeaderComponent,b=f.ItemComponent,x=f.PlainInput,I=f.SeparatorComponent,v=f.genItemData,w=f.getItemLayout,y=f.pressItem,H=f.renderSmallSwitchOption,_=(function(n){function o(){var n,l;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,h=new Array(s),f=0;f<s;f++)h[f]=arguments[f];return(l=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(o)).call.apply(n,[this].concat(h)))).state={data:v(1e3),filterText:'',fixedHeight:!0,logViewable:!1,numColumns:2,virtualized:!0},l._onChangeFilterText=function(t){l.setState(function(){return{filterText:t}})},l._onChangeNumColumns=function(t){l.setState(function(){return{numColumns:Number(t)}})},l._renderItemComponent=function(n){var o=n.item;return t.createElement(u,{style:T.card},t.createElement(b,{item:o,fixedHeight:l.state.fixedHeight,onPress:l._pressItem}))},l._onViewableItemsChanged=function(t){l.state.logViewable&&c('onViewableItemsChanged: ',t.changed.map(function(t){return babelHelpers.objectSpread({},t,{item:'...'})}))},l._pressItem=function(t){y(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(l)),t)},l}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){var n=new RegExp(String(this.state.filterText),'i'),o=this.state.data.filter(function(t){return n.test(t.text)||n.test(t.title)});return t.createElement(h,{title:this.props.navigator?null:'<FlatList> - MultiColumn',noSpacer:!0,noScroll:!0},t.createElement(u,{style:T.searchRow},t.createElement(u,{style:T.row},t.createElement(x,{onChangeText:this._onChangeFilterText,placeholder:"Search...",value:this.state.filterText}),t.createElement(s,null," numColumns: "),t.createElement(x,{clearButtonMode:"never",onChangeText:this._onChangeNumColumns,value:this.state.numColumns?String(this.state.numColumns):''})),t.createElement(u,{style:T.row},H(this,'virtualized'),H(this,'fixedHeight'),H(this,'logViewable'))),t.createElement(I,null),t.createElement(l,{ListFooterComponent:p,ListHeaderComponent:C,getItemLayout:this.state.fixedHeight?this._getItemLayout:void 0,data:o,key:this.state.numColumns+(this.state.fixedHeight?'f':'v'),numColumns:this.state.numColumns||1,onRefresh:function(){return alert('onRefresh: nothing to refresh :P')},refreshing:!1,renderItem:this._renderItemComponent,disableVirtualization:!this.state.virtualized,onViewableItemsChanged:this._onViewableItemsChanged,legacyImplementation:!1}))}},{key:"_getItemLayout",value:function(t,n){var l=w(t,n).length+2*(S+E);return{length:l,offset:l*n,index:n}}}]),o})(t.PureComponent);_.title='<FlatList> - MultiColumn',_.description='Performant, scrollable grid of data.';var S=4,E=1,T=o.create({card:{margin:S,borderRadius:10,flex:1,overflow:'hidden',borderColor:'lightgray',borderWidth:E},row:{flexDirection:'row',alignItems:'center'},searchRow:{padding:10}});m.exports=_},337,[85,170,303,21,312]);
-__d(function(g,r,i,a,m,e,d){'use strict';var l=r(d[0]),t=r(d[1]),n=r(d[2]),c=r(d[3]),o=r(d[4]),s=t.Picker,u=t.Text,h=s.Item,b=(function(t){function n(){var l,t;babelHelpers.classCallCheck(this,n);for(var c=arguments.length,o=new Array(c),u=0;u<c;u++)o[u]=arguments[u];return(t=babelHelpers.possibleConstructorReturn(this,(l=babelHelpers.getPrototypeOf(n)).call.apply(l,[this].concat(o)))).state={selected1:'key1',selected2:'key1',selected3:'key1',color:'red',mode:s.MODE_DIALOG},t.changeMode=function(){var l=t.state.mode===s.MODE_DIALOG?s.MODE_DROPDOWN:s.MODE_DIALOG;t.setState({mode:l})},t.onValueChange=function(l,n){var c={};c[l]=n,t.setState(c)},t}return babelHelpers.inherits(n,t),babelHelpers.createClass(n,[{key:"render",value:function(){return l.createElement(o,{title:"<Picker>"},l.createElement(c,{title:"Basic Picker"},l.createElement(s,{style:k.picker,selectedValue:this.state.selected1,onValueChange:this.onValueChange.bind(this,'selected1')},l.createElement(h,{label:"hello",value:"key0"}),l.createElement(h,{label:"world",value:"key1"}))),l.createElement(c,{title:"Disabled picker"},l.createElement(s,{style:k.picker,enabled:!1,selectedValue:this.state.selected1},l.createElement(h,{label:"hello",value:"key0"}),l.createElement(h,{label:"world",value:"key1"}))),l.createElement(c,{title:"Dropdown Picker"},l.createElement(s,{style:k.picker,selectedValue:this.state.selected2,onValueChange:this.onValueChange.bind(this,'selected2'),mode:"dropdown"},l.createElement(h,{label:"hello",value:"key0"}),l.createElement(h,{label:"world",value:"key1"}))),l.createElement(c,{title:"Picker with prompt message"},l.createElement(s,{style:k.picker,selectedValue:this.state.selected3,onValueChange:this.onValueChange.bind(this,'selected3'),prompt:"Pick one, just one"},l.createElement(h,{label:"hello",value:"key0"}),l.createElement(h,{label:"world",value:"key1"}))),l.createElement(c,{title:"Picker with no listener"},l.createElement(s,{style:k.picker},l.createElement(h,{label:"hello",value:"key0"}),l.createElement(h,{label:"world",value:"key1"})),l.createElement(u,null,"Cannot change the value of this picker because it doesn't update selectedValue.")),l.createElement(c,{title:"Colorful pickers"},l.createElement(s,{style:[k.picker,{color:'white',backgroundColor:'#333'}],selectedValue:this.state.color,onValueChange:this.onValueChange.bind(this,'color'),mode:"dropdown"},l.createElement(h,{label:"red",color:"red",value:"red"}),l.createElement(h,{label:"green",color:"green",value:"green"}),l.createElement(h,{label:"blue",color:"blue",value:"blue"})),l.createElement(s,{style:k.picker,selectedValue:this.state.color,onValueChange:this.onValueChange.bind(this,'color'),mode:"dialog"},l.createElement(h,{label:"red",color:"red",value:"red"}),l.createElement(h,{label:"green",color:"green",value:"green"}),l.createElement(h,{label:"blue",color:"blue",value:"blue"}))))}}]),n})(l.Component);b.title='<Picker>',b.description='Provides multiple options to choose from, using either a dropdown menu or a dialog.';var k=n.create({picker:{width:100}});m.exports=b},338,[85,170,98,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),c=s({displayName:'MovingBar',mixins:[r(d[5])],getInitialState:function(){return{progress:0}},componentDidMount:function(){var t=this;this.setInterval(function(){var n=(t.state.progress+.02)%1;t.setState({progress:n})},50)},render:function(){return n.createElement(t,babelHelpers.extends({progress:this.state.progress},this.props))}}),p=(function(s){function p(){return babelHelpers.classCallCheck(this,p),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(p).apply(this,arguments))}return babelHelpers.inherits(p,s),babelHelpers.createClass(p,[{key:"render",value:function(){return n.createElement(l,{title:"ProgressBar Examples"},n.createElement(o,{title:"Horizontal Indeterminate ProgressBar"},n.createElement(t,{styleAttr:"Horizontal"})),n.createElement(o,{title:"Horizontal ProgressBar"},n.createElement(c,{styleAttr:"Horizontal",indeterminate:!1})),n.createElement(o,{title:"Horizontal Black Indeterminate ProgressBar"},n.createElement(t,{styleAttr:"Horizontal",color:"black"})),n.createElement(o,{title:"Horizontal Blue ProgressBar"},n.createElement(c,{styleAttr:"Horizontal",indeterminate:!1,color:"blue"})))}}]),p})(n.Component);p.title='<ProgressBarAndroid>',p.description='Horizontal bar to show the progress of some operation.',m.exports=p},339,[173,97,161,302,303,183]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),l=o.ScrollView,n=o.StyleSheet,s=o.RefreshControl,c=o.Text,f=o.TouchableWithoutFeedback,p=o.View,u=n.create({row:{borderColor:'grey',borderWidth:1,padding:20,backgroundColor:'#3a5795',margin:5},text:{alignSelf:'center',color:'#fff'},scrollview:{flex:1}}),h=(function(o){function l(){var t,o;babelHelpers.classCallCheck(this,l);for(var n=arguments.length,s=new Array(n),c=0;c<n;c++)s[c]=arguments[c];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(s))))._onClick=function(){o.props.onClick(o.props.data)},o}return babelHelpers.inherits(l,o),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(f,{onPress:this._onClick},t.createElement(p,{style:u.row},t.createElement(c,{style:u.text},this.props.data.text+' ('+this.props.data.clicks+' clicks)')))}}]),l})(t.Component),b=(function(o){function n(){var t,o;babelHelpers.classCallCheck(this,n);for(var l=arguments.length,s=new Array(l),c=0;c<l;c++)s[c]=arguments[c];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(n)).call.apply(t,[this].concat(s)))).state={isRefreshing:!1,loaded:0,rowData:Array.from(new Array(20)).map(function(t,o){return{text:'Initial row '+o,clicks:0}})},o._onClick=function(t){t.clicks++,o.setState({rowData:o.state.rowData})},o._onRefresh=function(){o.setState({isRefreshing:!0}),setTimeout(function(){var t=Array.from(new Array(10)).map(function(t,l){return{text:'Loaded row '+(+o.state.loaded+l),clicks:0}}).concat(o.state.rowData);o.setState({loaded:o.state.loaded+10,isRefreshing:!1,rowData:t})},5e3)},o}return babelHelpers.inherits(n,o),babelHelpers.createClass(n,[{key:"render",value:function(){var o=this,n=this.state.rowData.map(function(l,n){return t.createElement(h,{key:n,data:l,onClick:o._onClick})});return t.createElement(l,{style:u.scrollview,refreshControl:t.createElement(s,{refreshing:this.state.isRefreshing,onRefresh:this._onRefresh,tintColor:"#ff0000",title:"Loading...",titleColor:"#00ff00",colors:['#ff0000','#00ff00','#0000ff'],progressBackgroundColor:"#ffff00"})},n)}}]),n})(t.Component);b.title='<RefreshControl>',b.description='Adds pull-to-refresh support to a scrollview.',m.exports=b},340,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),n=l.ScrollView,o=l.StyleSheet,p=l.Text,s=l.TouchableOpacity,c=(function(l){function o(){var l,n;babelHelpers.classCallCheck(this,o);for(var c=arguments.length,h=new Array(c),u=0;u<c;u++)h[u]=arguments[u];return(n=babelHelpers.possibleConstructorReturn(this,(l=babelHelpers.getPrototypeOf(o)).call.apply(l,[this].concat(h)))).makeItems=function(l,n){for(var o=[],c=0;c<l;c++)o[c]=t.createElement(s,{key:c,style:n},t.createElement(p,null,'Item '+c));return o},n}return babelHelpers.inherits(o,l),babelHelpers.createClass(o,[{key:"render",value:function(){var l=this.makeItems(20,h.itemWrapper);return l[4]=t.createElement(n,{key:'scrollView',horizontal:!0},this.makeItems(20,[h.itemWrapper,h.horizontalItemWrapper])),l.push(t.createElement(n,{key:'scrollViewSnap',horizontal:!0,snapToInterval:210,pagingEnabled:!0},this.makeItems(20,[h.itemWrapper,h.horizontalItemWrapper,h.horizontalPagingItemWrapper]))),t.createElement(n,{style:h.verticalScrollView},l)}}]),o})(t.Component);c.title='<ScrollView>',c.description='Component that enables scrolling through child components.';var h=o.create({verticalScrollView:{margin:10},itemWrapper:{backgroundColor:'#dddddd',alignItems:'center',borderRadius:5,borderWidth:5,borderColor:'#a52a2a',padding:30,margin:5},horizontalItemWrapper:{padding:50},horizontalPagingItemWrapper:{width:200}});m.exports=c},341,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=n.Alert,l=n.Animated,s=n.Button,c=n.StyleSheet,u=n.Text,h=n.View,p=r(d[2]),f=r(d[3]),b=r(d[4]),S=b.HeaderComponent,y=b.FooterComponent,E=b.ItemComponent,I=b.PlainInput,C=b.SeparatorComponent,T=b.Spindicator,v=b.genItemData,x=b.pressItem,w=b.renderSmallSwitchOption,k=b.renderStackedItem,_={minimumViewTime:3e3,viewAreaCoveragePercentThreshold:100,waitForInteraction:!0},H=function(n){var o=n.section;return t.createElement(h,{style:V.header},t.createElement(u,{style:V.headerText},"SECTION HEADER: ",o.key),t.createElement(C,null))},R=function(n){var o=n.section;return t.createElement(h,{style:V.header},t.createElement(u,{style:V.headerText},"SECTION FOOTER: ",o.key),t.createElement(C,null))},P=function(n){var o=n.highlighted,l=n.text;return t.createElement(h,{style:[V.customSeparator,o&&{backgroundColor:'rgb(217, 217, 217)'}]},t.createElement(u,{style:V.separatorText},l))},L=(function(n){function c(){var n,o;babelHelpers.classCallCheck(this,c);for(var s=arguments.length,u=new Array(s),h=0;h<s;h++)u[h]=arguments[h];return(o=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(c)).call.apply(n,[this].concat(u)))).state={data:v(1e3),debug:!1,filterText:'',logViewable:!1,virtualized:!0,inverted:!1},o._scrollPos=new l.Value(0),o._scrollSinkY=l.event([{nativeEvent:{contentOffset:{y:o._scrollPos}}}],{useNativeDriver:!0}),o._captureRef=function(t){o._sectionListRef=t},o._renderItemComponent=function(n){var l=n.item,s=n.separators;return t.createElement(E,{item:l,onPress:o._pressItem,onHideUnderlay:s.unhighlight,onShowUnderlay:s.highlight})},o._onViewableItemsChanged=function(t){o.state.logViewable&&f('onViewableItemsChanged: ',t.changed.map(function(t){return babelHelpers.objectSpread({},t,{item:'...',section:t.section.key})}))},o._pressItem=function(t){!isNaN(t)&&x(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(o)),t)},o}return babelHelpers.inherits(c,n),babelHelpers.createClass(c,[{key:"_scrollToLocation",value:function(t,n){this._sectionListRef.getNode().scrollToLocation({sectionIndex:t,itemIndex:n})}},{key:"render",value:function(){for(var n=this,c=new RegExp(String(this.state.filterText),'i'),f=this.state.data.filter(function(t){return c.test(t.text)||c.test(t.title)}),b=[],E=0,v=f.length-1,x=10;x<=v+10;x+=10)b.push({key:f[E].key+" - "+f[Math.min(x-1,v)].key,data:f.slice(E,x)}),E=x;return t.createElement(p,{noSpacer:!0,noScroll:!0},t.createElement(h,{style:V.searchRow},t.createElement(I,{onChangeText:function(t){n.setState(function(){return{filterText:t}})},placeholder:"Search...",value:this.state.filterText}),t.createElement(h,{style:V.optionSection},w(this,'virtualized'),w(this,'logViewable'),w(this,'debug'),w(this,'inverted'),t.createElement(T,{value:this._scrollPos})),t.createElement(h,{style:V.scrollToRow},t.createElement(u,null,"scroll to:"),t.createElement(s,{title:"Item A",onPress:function(){return n._scrollToLocation(2,1)}}),t.createElement(s,{title:"Item B",onPress:function(){return n._scrollToLocation(3,6)}}),t.createElement(s,{title:"Item C",onPress:function(){return n._scrollToLocation(6,3)}}))),t.createElement(C,null),t.createElement(l.SectionList,{ref:this._captureRef,ListHeaderComponent:S,ListFooterComponent:y,SectionSeparatorComponent:function(n){return t.createElement(P,babelHelpers.extends({},n,{text:"SECTION SEPARATOR"}))},ItemSeparatorComponent:function(n){return t.createElement(P,babelHelpers.extends({},n,{text:"ITEM SEPARATOR"}))},debug:this.state.debug,inverted:this.state.inverted,enableVirtualization:this.state.virtualized,onRefresh:function(){return o.alert('onRefresh: nothing to refresh :P')},onScroll:this._scrollSinkY,onViewableItemsChanged:this._onViewableItemsChanged,refreshing:!1,renderItem:this._renderItemComponent,renderSectionHeader:H,renderSectionFooter:R,stickySectionHeadersEnabled:!0,sections:[{key:'empty section',data:[]},{renderItem:k,key:'s1',data:[{title:'Item In Header Section',text:'Section s1',key:'header item'}]},{key:'s2',data:[{noImage:!0,title:'1st item',text:'Section s2',key:'noimage0'},{noImage:!0,title:'2nd item',text:'Section s2',key:'noimage1'}]}].concat(b),style:V.list,viewabilityConfig:_}))}}]),c})(t.PureComponent);L.title='<SectionList>',L.description='Performant, scrollable list of data.';var V=c.create({customSeparator:{backgroundColor:'rgb(200, 199, 204)'},header:{backgroundColor:'#e9eaed'},headerText:{padding:4,fontWeight:'600'},list:{backgroundColor:'white'},optionSection:{flexDirection:'row',flexWrap:'wrap',alignItems:'center'},searchRow:{paddingHorizontal:10},scrollToRow:{flexDirection:'row',alignItems:'center',paddingHorizontal:8},separatorText:{color:'gray',alignSelf:'center',fontSize:7}});m.exports=L},342,[85,170,303,21,312]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.Slider,o=n.Text,u=n.StyleSheet,s=n.View,c=(function(n){function u(){var t,n;babelHelpers.classCallCheck(this,u);for(var l=arguments.length,o=new Array(l),s=0;s<l;s++)o[s]=arguments[s];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(u)).call.apply(t,[this].concat(o)))).state={value:n.props.value},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"render",value:function(){var n=this;return t.createElement(s,null,t.createElement(o,{style:C.text},this.state.value&&+this.state.value.toFixed(3)),t.createElement(l,babelHelpers.extends({},this.props,{onValueChange:function(t){return n.setState({value:t})}})))}}]),u})(t.Component);c.defaultProps={value:0};var p=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var o=arguments.length,u=new Array(o),s=0;s<o;s++)u[s]=arguments[s];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(u)))).state={slideCompletionValue:0,slideCompletionCount:0},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){var n=this;return t.createElement(s,null,t.createElement(c,babelHelpers.extends({},this.props,{onSlidingComplete:function(t){return n.setState({slideCompletionValue:t,slideCompletionCount:n.state.slideCompletionCount+1})}})),t.createElement(o,null,"Completions: ",this.state.slideCompletionCount," Value:",' ',this.state.slideCompletionValue))}}]),l})(t.Component),C=u.create({slider:{height:10,margin:10},text:{fontSize:14,textAlign:'center',fontWeight:'500',margin:10}});e.title='<Slider>',e.displayName='SliderExample',e.description='Slider input for numeric values',e.examples=[{title:'Default settings',render:function(){return t.createElement(c,null)}},{title:'Initial value: 0.5',render:function(){return t.createElement(c,{value:.5})}},{title:'minimumValue: -1, maximumValue: 2',render:function(){return t.createElement(c,{minimumValue:-1,maximumValue:2})}},{title:'step: 0.25',render:function(){return t.createElement(c,{step:.25})}},{title:'onSlidingComplete',render:function(){return t.createElement(p,null)}},{title:'Custom min/max track tint color',render:function(){return t.createElement(c,{minimumTrackTintColor:'blue',maximumTrackTintColor:'red',value:.5})}},{title:'Custom thumb color',platform:'android',render:function(){return t.createElement(c,{thumbTintColor:'blue'})}},{title:'Custom thumb image',platform:['ios','macos'],render:function(){return t.createElement(c,{thumbImage:r(d[2])})}},{title:'Custom track image',platform:['ios','macos'],render:function(){return t.createElement(c,{trackImage:r(d[3])})}},{title:'Custom min/max track image',platform:['ios','macos'],render:function(){return t.createElement(c,{minimumTrackImage:r(d[4]),maximumTrackImage:r(d[5])})}}]},343,[85,170,344,345,346,347]);
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babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){return t.createElement(u,null,t.createElement(c,{style:B.wrapper,onPress:function(){l.setHidden(!0,'slide')}},t.createElement(u,{style:B.button},t.createElement(o,null,"setHidden(true, 'slide')"))),t.createElement(c,{style:B.wrapper,onPress:function(){l.setHidden(!1,'fade')}},t.createElement(u,{style:B.button},t.createElement(o,null,"setHidden(false, 'fade')"))),t.createElement(c,{style:B.wrapper,onPress:function(){l.setBarStyle('default',!0)}},t.createElement(u,{style:B.button},t.createElement(o,null,"setBarStyle('default', true)"))),t.createElement(c,{style:B.wrapper,onPress:function(){l.setBarStyle('light-content',!0)}},t.createElement(u,{style:B.button},t.createElement(o,null,"setBarStyle('light-content', 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Italic"),t.createElement(s,{style:{fontFamily:'sans-serif-medium'}},"Roboto Medium (After 5.0)"),t.createElement(s,{style:{fontFamily:'sans-serif-medium',fontStyle:'italic'}},"Roboto Medium Italic (After 5.0)")))),t.createElement(f,{title:"Custom Fonts"},t.createElement(c,{style:{flexDirection:'row',alignItems:'flex-start'}},t.createElement(c,{style:{flex:1}},t.createElement(s,{style:{fontFamily:'notoserif'}},"NotoSerif Regular"),t.createElement(s,{style:{fontFamily:'notoserif',fontStyle:'italic',fontWeight:'bold'}},"NotoSerif Bold Italic"),t.createElement(s,{style:{fontFamily:'notoserif',fontStyle:'italic'}},"NotoSerif Italic (Missing Font file)")))),t.createElement(f,{title:"Font Size"},t.createElement(s,{style:{fontSize:23}},"Size 23"),t.createElement(s,{style:{fontSize:8}},"Size 8")),t.createElement(f,{title:"Color"},t.createElement(s,{style:{color:'red'}},"Red color"),t.createElement(s,{style:{color:'blue'}},"Blue color")),t.createElement(f,{title:"Font 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',t.createElement(s,{style:{textDecorationLine:'underline'}},"underline")," and",' ',t.createElement(s,{style:{textDecorationLine:'line-through'}},"line-through"),' ',"text nodes")),t.createElement(f,{title:"Nested"},t.createElement(s,{onPress:function(){return console.log('1st')}},"(Normal text,",t.createElement(s,{style:{color:'red',fontWeight:'bold'}},"(R)red",t.createElement(s,{style:{color:'green',fontWeight:'normal'}},"(G)green",t.createElement(s,{style:{color:'blue',fontWeight:'bold'}},"(B)blue",t.createElement(s,{style:{color:'cyan',fontWeight:'normal'}},"(C)cyan",t.createElement(s,{style:{color:'magenta',fontWeight:'bold'}},"(M)magenta",t.createElement(s,{style:{color:'yellow',fontWeight:'normal'}},"(Y)yellow",t.createElement(s,{style:{color:'black',fontWeight:'bold'}},"(K)black"))))))),t.createElement(s,{style:{fontWeight:'bold'},onPress:function(){return console.log('2nd')}},"(and bold",t.createElement(s,{style:{fontStyle:'italic',fontSize:11,color:'#527fe4'},onPress:function(){return console.log('3rd')}},"(and tiny bold italic blue",t.createElement(s,{style:{fontWeight:'normal',fontStyle:'normal'},onPress:function(){return console.log('4th')}},"(and tiny normal blue)"),")"),")"),")"),t.createElement(s,{style:{fontFamily:'serif'},onPress:function(){return console.log('1st')}},"(Serif",t.createElement(s,{style:{fontStyle:'italic',fontWeight:'bold'},onPress:function(){return console.log('2nd')}},"(Serif Bold Italic",t.createElement(s,{style:{fontFamily:'monospace',fontStyle:'normal',fontWeight:'normal'},onPress:function(){return console.log('3rd')}},"(Monospace Normal",t.createElement(s,{style:{fontFamily:'sans-serif',fontWeight:'bold'},onPress:function(){return console.log('4th')}},"(Sans-Serif Bold",t.createElement(s,{style:{fontWeight:'normal'},onPress:function(){return console.log('5th')}},"(and Sans-Serif Normal)"),")"),")"),")"),")"),t.createElement(s,{style:{fontSize:12}},t.createElement(y,null,"Entity Name"))),t.createElement(f,{title:"Text Align"},t.createElement(s,null,"auto (default) - english LTR"),t.createElement(s,null,"\u0623\u062d\u0628 \u0627\u0644\u0644\u063a\u0629 \u0627\u0644\u0639\u0631\u0628\u064a\u0629 auto (default) - arabic RTL"),t.createElement(s,{style:{textAlign:'left'}},"left left left left left left left left left left left left left left left"),t.createElement(s,{style:{textAlign:'center'}},"center center center center center center center center center center center"),t.createElement(s,{style:{textAlign:'right'}},"right right right right right right right right right right right right 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",'generated'," ",'string'," and some \xa0\xa0\xa0 spaces")),t.createElement(f,{title:"Line Height"},t.createElement(s,{style:{lineHeight:35}},"Holisticly formulate inexpensive ideas before best-of-breed benefits. ",t.createElement(s,{style:{fontSize:20}},"Continually")," expedite magnetic potentialities rather than client-focused interfaces.")),t.createElement(f,{title:"Letter Spacing"},t.createElement(c,null,t.createElement(s,{style:{letterSpacing:0}},"letterSpacing = 0"),t.createElement(s,{style:{letterSpacing:2,marginTop:5}},"letterSpacing = 2"),t.createElement(s,{style:{letterSpacing:9,marginTop:5}},"letterSpacing = 9"),t.createElement(c,{style:{flexDirection:'row'}},t.createElement(s,{style:{fontSize:12,letterSpacing:2,backgroundColor:'fuchsia',marginTop:5}},"With size and background color")),t.createElement(s,{style:{letterSpacing:-1,marginTop:5}},"letterSpacing = -1"),t.createElement(s,{style:{letterSpacing:3,backgroundColor:'#dddddd',marginTop:5}},"[letterSpacing = 3]",t.createElement(s,{style:{letterSpacing:0,backgroundColor:'#bbbbbb'}},"[Nested letterSpacing = 0]"),t.createElement(s,{style:{letterSpacing:6,backgroundColor:'#eeeeee'}},"[Nested letterSpacing = 6]")))),t.createElement(f,{title:"Empty Text"},t.createElement(s,null)),t.createElement(f,{title:"Toggling Attributes"},t.createElement(h,null)),t.createElement(f,{title:"backgroundColor attribute"},t.createElement(s,{style:{backgroundColor:'#ffaaaa'}},"Red background,",t.createElement(s,{style:{backgroundColor:'#aaaaff'}},' ',"blue background,",t.createElement(s,null,' ',"inherited blue background,",t.createElement(s,{style:{backgroundColor:'#aaffaa'}},' ',"nested green background.")))),t.createElement(s,{style:{backgroundColor:'rgba(100, 100, 100, 0.3)'}},"Same alpha as background,",t.createElement(s,null,"Inherited alpha from background,",t.createElement(s,{style:{backgroundColor:'rgba(100, 100, 100, 0.3)'}},"Reapply alpha")))),t.createElement(f,{title:"containerBackgroundColor attribute"},t.createElement(c,{style:{flexDirection:'row',height:85}},t.createElement(c,{style:{backgroundColor:'#ffaaaa',width:150}}),t.createElement(c,{style:{backgroundColor:'#aaaaff',width:150}})),t.createElement(s,{style:[b.backgroundColorText,{top:-80}]},"Default containerBackgroundColor (inherited) + backgroundColor wash"),t.createElement(s,{style:[b.backgroundColorText,{top:-70,backgroundColor:'transparent'}]},"containerBackgroundColor: 'transparent' + backgroundColor wash")),t.createElement(f,{title:"numberOfLines attribute"},t.createElement(s,{numberOfLines:1},"Maximum of one line no matter now much I write here. 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With some fonts, this can make text look slightly misaligned when centered vertically.")))}}]),o})(t.Component);E.title='<Text>',E.description='Base component for rendering styled text.';var b=o.create({backgroundColorText:{left:5,backgroundColor:'rgba(100, 100, 100, 0.3)'},includeFontPaddingText:{fontSize:120,fontFamily:'sans-serif',backgroundColor:'#EEEEEE',color:'#000000',textAlignVertical:'center',alignSelf:'center'}});m.exports=E},352,[85,170,302,303,353]);
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n.updateText('onChange text: '+t.nativeEvent.text)},onContentSizeChange:function(t){return n.updateText('onContentSizeChange size: '+t.nativeEvent.contentSize)},onEndEditing:function(t){return n.updateText('onEndEditing text: '+t.nativeEvent.text)},onSubmitEditing:function(t){return n.updateText('onSubmitEditing text: '+t.nativeEvent.text)},onKeyPress:function(t){return n.updateText('onKeyPress key: '+t.nativeEvent.key)},style:C.singleLine}),t.createElement(l,{style:C.eventLabel},this.state.curText,'\n',"(prev: ",this.state.prevText,")",'\n',"(prev2: ",this.state.prev2Text,")",'\n',"(prev3: ",this.state.prev3Text,")"))}}]),u})(t.Component),b=(function(n){function u(t){var n;return babelHelpers.classCallCheck(this,u),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this,t))).state={text:''},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"render",value:function(){var n=this,u=20-this.state.text.length,c=u>5?'blue':'red';return t.createElement(o,{style:C.rewriteContainer},t.createElement(s,{multiline:!1,maxLength:20,onChangeText:function(t){t=t.replace(/ /g,'_'),n.setState({text:t})},style:C.default,value:this.state.text}),t.createElement(l,{style:[C.remainder,{color:c}]},u))}}]),u})(t.Component),f=(function(n){function u(t){var n;return babelHelpers.classCallCheck(this,u),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this,t))).state={text:'Hello #World'},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"render",value:function(){for(var n,u,c=this,h=/\s+/,p=this.state.text,b=[];p&&(h.lastIndex=0,null!==(n=h.exec(p)));)u=n.index,0===n[0].length&&(u=1),b.push(p.substr(0,u)),b.push(n[0]),u+=n[0].length,p=p.slice(u);return b.push(p),b=b.map(function(n){return/^#/.test(n)?t.createElement(l,{key:n,style:C.hashtag},n):n}),t.createElement(o,null,t.createElement(s,{multiline:!0,style:C.multiline,onChangeText:function(t){c.setState({text:t})}},t.createElement(l,null,b)))}}]),u})(t.Component),y=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var s=arguments.length,o=new Array(s),u=0;u<s;u++)o[u]=arguments[u];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(o)))).focusNextField=function(t){n.refs[t].focus()},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){var n=this;return t.createElement(o,null,t.createElement(s,{ref:"1",style:C.singleLine,placeholder:"blurOnSubmit = false",returnKeyType:"next",blurOnSubmit:!1,onSubmitEditing:function(){return n.focusNextField('2')}}),t.createElement(s,{ref:"2",style:C.singleLine,keyboardType:"email-address",placeholder:"blurOnSubmit = 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t.createElement(o,null,t.createElement(s,{style:this.state.hasPadding?{padding:0}:null}),t.createElement(l,{onPress:function(){return n.setState({hasPadding:!n.state.hasPadding})}},"Toggle padding"))}}]),u})(t.Component),x=(function(n){function u(t){var n;return babelHelpers.classCallCheck(this,u),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this,t))).state={selection:{start:0,end:0},value:t.value},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"onSelectionChange",value:function(t){var n=t.nativeEvent.selection;this.setState({selection:n})}},{key:"getRandomPosition",value:function(){var t=this.state.value.length;return Math.round(Math.random()*t)}},{key:"select",value:function(t,n){this._textInput.focus(),this.setState({selection:{start:t,end:n}})}},{key:"selectRandom",value:function(){var t=[this.getRandomPosition(),this.getRandomPosition()].sort();this.select.apply(this,babelHelpers.toConsumableArray(t))}},{key:"placeAt",value:function(t){this.select(t,t)}},{key:"placeAtRandom",value:function(){this.placeAt(this.getRandomPosition())}},{key:"render",value:function(){var n=this,u=this.state.value.length;return t.createElement(o,null,t.createElement(s,{multiline:this.props.multiline,onChangeText:function(t){return n.setState({value:t})},onSelectionChange:this.onSelectionChange.bind(this),ref:function(t){return n._textInput=t},selection:this.state.selection,style:this.props.style,value:this.state.value}),t.createElement(o,null,t.createElement(l,null,"selection = ",JSON.stringify(this.state.selection)),t.createElement(l,{onPress:this.placeAt.bind(this,0)},"Place at Start (0, 0)"),t.createElement(l,{onPress:this.placeAt.bind(this,u)},"Place at End (",u,", ",u,")"),t.createElement(l,{onPress:this.placeAtRandom.bind(this)},"Place at Random"),t.createElement(l,{onPress:this.select.bind(this,0,u)},"Select All"),t.createElement(l,{onPress:this.selectRandom.bind(this)},"Select Random")))}}]),u})(t.Component),v=(function(n){function u(t){var n;return babelHelpers.classCallCheck(this,u),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this,t))).state={width:100,multiline:!0,text:'',contentSize:{width:0,height:0}},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.setState({multiline:t.multiline})}},{key:"render",value:function(){var n=this,u=this.props,p=u.style,b=(u.multiline,babelHelpers.objectWithoutProperties(u,["style","multiline"]));return t.createElement(o,null,t.createElement(l,null,"Width:"),t.createElement(c,{value:100,minimumValue:0,maximumValue:100,step:10,onValueChange:function(t){return n.setState({width:t})}}),t.createElement(l,null,"Multiline:"),t.createElement(h,{value:this.state.multiline,onValueChange:function(t){return n.setState({multiline:t})}}),t.createElement(l,null,"TextInput:"),t.createElement(s,babelHelpers.extends({multiline:this.state.multiline,style:[p,{width:this.state.width+'%'}],onChangeText:function(t){return n.setState({text:t})},onContentSizeChange:function(t){return n.setState({contentSize:t.nativeEvent.contentSize})}},b)),t.createElement(l,null,"Plain text value representation:"),t.createElement(l,null,this.state.text),t.createElement(l,null,"Content Size: ",JSON.stringify(this.state.contentSize)))}}]),u})(t.Component),C=u.create({multiline:{height:60,fontSize:16},eventLabel:{margin:3,fontSize:12},singleLine:{fontSize:16},singleLineWithHeightTextInput:{height:30},hashtag:{color:'blue',fontWeight:'bold'}});e.title='<TextInput>',e.description='Single and multi-line text inputs.',e.examples=[{title:'Auto-focus',render:function(){return t.createElement(s,{autoFocus:!0,multiline:!0,style:C.input,accessibilityLabel:"I am the accessibility label for text input"})}},{title:"Live Re-Write (<sp>  ->  '_')",render:function(){return t.createElement(b,null)}},{title:'Auto-capitalize',render:function(){var n=['none','sentences','words','characters'].map(function(n){return t.createElement(s,{key:n,autoCapitalize:n,placeholder:'autoCapitalize: '+n,style:C.singleLine})});return t.createElement(o,null,n)}},{title:'Auto-correct',render:function(){return t.createElement(o,null,t.createElement(s,{autoCorrect:!0,placeholder:"This has autoCorrect",style:C.singleLine}),t.createElement(s,{autoCorrect:!1,placeholder:"This does not have autoCorrect",style:C.singleLine}))}},{title:'Keyboard types',render:function(){var n=['default','email-address','numeric','phone-pad'].map(function(n){return t.createElement(s,{key:n,keyboardType:n,placeholder:'keyboardType: '+n,style:C.singleLine})});return t.createElement(o,null,n)}},{title:'Blur on submit',render:function(){return t.createElement(y,null)}},{title:'Event handling',render:function(){return t.createElement(p,null)}},{title:'Colors and text inputs',render:function(){return t.createElement(o,null,t.createElement(s,{style:[C.singleLine],defaultValue:"Default color text"}),t.createElement(s,{style:[C.singleLine,{color:'green'}],defaultValue:"Green Text"}),t.createElement(s,{placeholder:"Default placeholder text color",style:C.singleLine}),t.createElement(s,{placeholder:"Red placeholder text color",placeholderTextColor:"red",style:C.singleLine}),t.createElement(s,{placeholder:"Default underline color",style:C.singleLine}),t.createElement(s,{placeholder:"Blue underline color",style:C.singleLine,underlineColorAndroid:"blue"}),t.createElement(s,{defaultValue:"Same BackgroundColor as View ",style:[C.singleLine,{backgroundColor:'rgba(100, 100, 100, 0.3)'}]},t.createElement(l,{style:{backgroundColor:'rgba(100, 100, 100, 0.3)'}},"Darker backgroundColor")),t.createElement(s,{defaultValue:"Highlight Color is red",selectionColor:'red',style:C.singleLine}))}},{title:'Text input, themes and heights',render:function(){return t.createElement(s,{placeholder:"If you set height, beware of padding set from themes",style:[C.singleLineWithHeightTextInput]})}},{title:'fontFamily, fontWeight and fontStyle',render:function(){return t.createElement(o,null,t.createElement(s,{style:[C.singleLine,{fontFamily:'sans-serif'}],placeholder:"Custom fonts like Sans-Serif are supported"}),t.createElement(s,{style:[C.singleLine,{fontFamily:'sans-serif',fontWeight:'bold'}],placeholder:"Sans-Serif bold"}),t.createElement(s,{style:[C.singleLine,{fontFamily:'sans-serif',fontStyle:'italic'}],placeholder:"Sans-Serif italic"}),t.createElement(s,{style:[C.singleLine,{fontFamily:'serif'}],placeholder:"Serif"}))}},{title:'letterSpacing',render:function(){return t.createElement(o,null,t.createElement(s,{style:[C.singleLine,{letterSpacing:0}],placeholder:"letterSpacing = 0"}),t.createElement(s,{style:[C.singleLine,{letterSpacing:2}],placeholder:"letterSpacing = 2"}),t.createElement(s,{style:[C.singleLine,{letterSpacing:9}],placeholder:"letterSpacing = 9"}),t.createElement(s,{style:[C.singleLine,{letterSpacing:-1}],placeholder:"letterSpacing = -1"}))}},{title:'Passwords',render:function(){return t.createElement(o,null,t.createElement(s,{defaultValue:"iloveturtles",secureTextEntry:!0,style:C.singleLine}),t.createElement(s,{secureTextEntry:!0,style:[C.singleLine,{color:'red'}],placeholder:"color is supported too",placeholderTextColor:"red"}))}},{title:'Editable',render:function(){return t.createElement(s,{defaultValue:"Can't touch this! (>'-')> ^(' - ')^ <('-'<) (>'-')> ^(' - ')^",editable:!1,style:C.singleLine})}},{title:'Multiline',render:function(){return t.createElement(o,null,t.createElement(s,{autoCorrect:!0,placeholder:"multiline, aligned top-left",placeholderTextColor:"red",multiline:!0,style:[C.multiline,{textAlign:'left',textAlignVertical:'top'}]}),t.createElement(s,{autoCorrect:!0,placeholder:"multiline, aligned center",placeholderTextColor:"green",multiline:!0,style:[C.multiline,{textAlign:'center',textAlignVertical:'center'}]}),t.createElement(s,{autoCorrect:!0,multiline:!0,style:[C.multiline,{color:'blue'},{textAlign:'right',textAlignVertical:'bottom'}]},t.createElement(l,{style:C.multiline},"multiline with children, aligned bottom-right")))}},{title:'Fixed number of lines',platform:'android',render:function(){return t.createElement(o,null,t.createElement(s,{numberOfLines:2,multiline:!0,placeholder:"Two line input"}),t.createElement(s,{numberOfLines:5,multiline:!0,placeholder:"Five line input"}))}},{title:'Auto-expanding',render:function(){return t.createElement(o,null,t.createElement(v,{enablesReturnKeyAutomatically:!0,returnKeyType:"done",multiline:!0,style:{maxHeight:400,minHeight:20,backgroundColor:'#eeeeee'}},"generic generic generic",t.createElement(l,{style:{fontSize:6,color:'red'}},"small small small small small small"),t.createElement(l,null,"regular regular"),t.createElement(l,{style:{fontSize:30,color:'green'}},"huge huge huge huge huge"),"generic generic generic"))}},{title:'Attributed text',render:function(){return t.createElement(f,null)}},{title:'Return key',render:function(){var n=['none','go','search','send','done','previous','next'].map(function(n){return t.createElement(s,{key:n,returnKeyType:n,placeholder:'returnKeyType: '+n,style:C.singleLine})}),l=['Compile','React Native'].map(function(n){return t.createElement(s,{key:n,returnKeyLabel:n,placeholder:'returnKeyLabel: '+n,style:C.singleLine})});return t.createElement(o,null,n,l)}},{title:'Inline Images',render:function(){return t.createElement(o,null,t.createElement(s,{inlineImageLeft:"ic_menu_black_24dp",placeholder:"This has drawableLeft set",style:C.singleLine}),t.createElement(s,{inlineImageLeft:"ic_menu_black_24dp",inlineImagePadding:30,placeholder:"This has drawableLeft and drawablePadding set",style:C.singleLine}),t.createElement(s,{placeholder:"This does not have drawable props set",style:C.singleLine}))}},{title:'Toggle Default Padding',render:function(){return t.createElement(E,null)}},{title:'Text selection & cursor placement',render:function(){return t.createElement(o,null,t.createElement(x,{style:C.default,value:"text selection can be changed"}),t.createElement(x,{multiline:!0,style:C.multiline,value:'multiline text selection\ncan also be changed'}))}}]},354,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),l=r(d[2]),n=o.StyleSheet,c=o.Text,s=o.View,h=r(d[3]),b=r(d[4]),u=r(d[5]),w=r(d[6]),p=(function(o){function n(){var t,o;babelHelpers.classCallCheck(this,n);for(var l=arguments.length,c=new Array(l),s=0;s<l;s++)c[s]=arguments[s];return(o=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(n)).call.apply(t,[this].concat(c)))).state={actionText:'Example app with toolbar component',toolbarSwitch:!1,colorProps:{titleColor:'#3b5998',subtitleColor:'#6a7180'}},o._onActionSelected=function(t){o.setState({actionText:'Selected '+E[t].title})},o}return babelHelpers.inherits(n,o),babelHelpers.createClass(n,[{key:"render",value:function(){var o=this;return t.createElement(b,{title:"<ToolbarAndroid>"},t.createElement(h,{title:"Toolbar with title/subtitle and actions"},t.createElement(w,{actions:E,navIcon:l({android:'ic_menu_black_24dp',width:48,height:48}),onActionSelected:this._onActionSelected,onIconClicked:function(){return o.setState({actionText:'Icon clicked'})},style:_.toolbar,subtitle:this.state.actionText,title:"Toolbar"}),t.createElement(c,null,this.state.actionText)),t.createElement(h,{title:"Toolbar with logo & custom title view (a View with Switch+Text)"},t.createElement(w,{logo:l({android:'launcher_icon',width:132,height:144}),style:_.toolbar},t.createElement(s,{style:{height:56,flexDirection:'row',alignItems:'center'}},t.createElement(u,{value:this.state.toolbarSwitch,onValueChange:function(t){return o.setState({toolbarSwitch:t})}}),t.createElement(c,null,"'Tis but a switch")))),t.createElement(h,{title:"Toolbar with no icon"},t.createElement(w,{actions:E,style:_.toolbar,subtitle:"There be no icon here"})),t.createElement(h,{title:"Toolbar with navIcon & logo, no title"},t.createElement(w,{actions:E,logo:l({android:'launcher_icon',width:132,height:144}),navIcon:l({android:'ic_menu_black_24dp',width:48,height:48}),style:_.toolbar})),t.createElement(h,{title:"Toolbar with custom title colors"},t.createElement(w,babelHelpers.extends({navIcon:l({android:'ic_menu_black_24dp',width:48,height:48}),onIconClicked:function(){return o.setState({colorProps:{}})},title:"Wow, such toolbar",style:_.toolbar,subtitle:"Much native"},this.state.colorProps)),t.createElement(c,null,"Touch the icon to reset the custom colors to the default (theme-provided) ones.")),t.createElement(h,{title:"Toolbar with remote logo & navIcon"},t.createElement(w,{actions:[{title:'Bunny',icon:r(d[7]),show:'always'}],logo:r(d[8]),navIcon:r(d[7]),title:"Bunny and Hawk",style:_.toolbar})),t.createElement(h,{title:"Toolbar with custom overflowIcon"},t.createElement(w,{actions:E,overflowIcon:r(d[7]),style:_.toolbar})))}}]),n})(t.Component);p.title='<ToolbarAndroid>',p.description='Examples of using the Android toolbar.';var E=[{title:'Create',icon:l({android:'ic_create_black_48dp',width:96,height:96}),show:'always'},{title:'Filter'},{title:'Settings',icon:l({android:'ic_settings_black_48dp',width:96,height:96}),show:'always'}],_=n.create({toolbar:{backgroundColor:'#e9eaed',height:56}});m.exports=p},355,[85,170,327,302,303,262,166,332,356]);
-__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",width:240,height:240,scales:[1],hash:"0b66d0e54a974bbe984abf462d8d64c2",name:"hawk",type:"png"})},356,[129]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=n.Animated,o=n.Image,l=n.StyleSheet,c=n.Text,u=n.TouchableHighlight,b=n.TouchableOpacity,h=(n.Platform,n.TouchableNativeFeedback),p=n.View,f=r(d[2]),y=f.PlatformConstants&&f.PlatformConstants.forceTouchAvailable||!1;e.displayName=void 0,e.description='Touchable and onPress examples.',e.title='<Touchable*> and onPress',e.examples=[{title:'<TouchableHighlight>',description:"TouchableHighlight works by adding an extra view with a black background under the single child view.  This works best when the child view is fully opaque, although it can be made to work as a simple background color change as well with the activeOpacity and underlayColor props.",render:function(){return t.createElement(p,null,t.createElement(p,{style:x.row},t.createElement(u,{style:x.wrapper,onPress:function(){return console.log('stock THW image - highlight')}},t.createElement(o,{source:T,style:x.image})),t.createElement(u,{style:x.wrapper,activeOpacity:1,tvParallaxProperties:{pressMagnification:1.3,pressDuration:.6},underlayColor:"rgb(210, 230, 255)",onPress:function(){return console.log('custom THW text - highlight')}},t.createElement(p,{style:x.wrapperCustom},t.createElement(c,{style:x.text},"Tap Here For Custom Highlight!")))))}},{title:'TouchableNativeFeedback with Animated child',description:"TouchableNativeFeedback can have an AnimatedComponent as adirect child.",platform:'android',render:function(){var n=new s.Value(1);s.timing(n,{toValue:.3,duration:1e3}).start();var o={backgroundColor:'rgb(180, 64, 119)',width:200,height:100,transform:[{scale:n}]};return t.createElement(p,null,t.createElement(p,{style:x.row},t.createElement(h,null,t.createElement(s.View,{style:o}))))}},{title:'<Text onPress={fn}> with highlight',render:function(){return t.createElement(v,null)}},{title:'Touchable feedback events',description:"<Touchable*> components accept onPress, onPressIn, onPressOut, and onLongPress as props.",render:function(){return t.createElement(E,null)}},{title:'Touchable delay for events',description:"<Touchable*> components also accept delayPressIn, delayPressOut, and delayLongPress as props. These props impact the timing of feedback events.",render:function(){return t.createElement(P,null)}},{title:'3D Touch / Force Touch',description:'iPhone 6s and 6s plus support 3D touch, which adds a force property to touches',render:function(){return t.createElement(C,null)},platform:'ios'},{title:'Touchable Hit Slop',description:"<Touchable*> components accept hitSlop prop which extends the touch area without changing the view bounds.",render:function(){return t.createElement(k,null)}},{title:'Disabled Touchable*',description:"<Touchable*> components accept disabled prop which prevents any interaction with component",render:function(){return t.createElement(w,null)}},{title:'Touchable Hover',description:"<Touchable*> components reacts to mouse enter and mouse exit events",render:function(){return t.createElement(_,null)},platform:'macos'},{title:'Touchable feedback mouse events',description:"<Touchable*> components reacts to mouse events and mouse exit events",render:function(){return t.createElement(H,null)},platform:'macos'}];var v=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={timesPressed:0},n.textOnPress=function(){n.setState({timesPressed:n.state.timesPressed+1})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n='';return this.state.timesPressed>1?n=this.state.timesPressed+'x text onPress':this.state.timesPressed>0&&(n='text onPress'),t.createElement(p,null,t.createElement(c,{style:x.textBlock,onPress:this.textOnPress},"Text has built-in onPress handling"),t.createElement(p,{style:x.logBox},t.createElement(c,null,n)))}}]),s})(t.Component),E=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={eventLog:[]},n._appendEvent=function(t){var s=n.state.eventLog.slice(0,5);s.unshift(t),n.setState({eventLog:s})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n=this;return t.createElement(p,{testID:"touchable_feedback_events"},t.createElement(p,{style:[x.row,{justifyContent:'center'}]},t.createElement(b,{style:x.wrapper,testID:"touchable_feedback_events_button",accessibilityLabel:"touchable feedback events",accessibilityRole:"button",onPress:function(){return n._appendEvent('press')},onPressIn:function(){return n._appendEvent('pressIn')},onPressOut:function(){return n._appendEvent('pressOut')},onLongPress:function(){return n._appendEvent('longPress')}},t.createElement(c,{style:x.button},"Press Me"))),t.createElement(p,{testID:"touchable_feedback_events_console",style:x.eventLogBox},this.state.eventLog.map(function(n,s){return t.createElement(c,{key:s},n)})))}}]),s})(t.Component),P=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={eventLog:[]},n._appendEvent=function(t){var s=n.state.eventLog.slice(0,5);s.unshift(t),n.setState({eventLog:s})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n=this;return t.createElement(p,{testID:"touchable_delay_events"},t.createElement(p,{style:[x.row,{justifyContent:'center'}]},t.createElement(b,{style:x.wrapper,testID:"touchable_delay_events_button",onPress:function(){return n._appendEvent('press')},delayPressIn:400,onPressIn:function(){return n._appendEvent('pressIn - 400ms delay')},delayPressOut:1e3,onPressOut:function(){return n._appendEvent('pressOut - 1000ms delay')},delayLongPress:800,onLongPress:function(){return n._appendEvent('longPress - 800ms delay')}},t.createElement(c,{style:x.button},"Press Me"))),t.createElement(p,{style:x.eventLogBox,testID:"touchable_delay_events_console"},this.state.eventLog.map(function(n,s){return t.createElement(c,{key:s},n)})))}}]),s})(t.Component),C=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={force:0},n._renderConsoleText=function(){return y?'Force: '+n.state.force.toFixed(3):'3D Touch is not available on this device'},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n=this;return t.createElement(p,{testID:"touchable_3dtouch_event"},t.createElement(p,{style:x.forceTouchBox,testID:"touchable_3dtouch_output"},t.createElement(c,null,this._renderConsoleText())),t.createElement(p,{style:[x.row,{justifyContent:'center'}]},t.createElement(p,{style:x.wrapper,testID:"touchable_3dtouch_button",onStartShouldSetResponder:function(){return!0},onResponderMove:function(t){return n.setState({force:t.nativeEvent.force})},onResponderRelease:function(t){return n.setState({force:0})}},t.createElement(c,{style:x.button},"Press Me"))))}}]),s})(t.Component),k=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={timesPressed:0},n.onPress=function(){n.setState({timesPressed:n.state.timesPressed+1})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n='';return this.state.timesPressed>1?n=this.state.timesPressed+'x onPress':this.state.timesPressed>0&&(n='onPress'),t.createElement(p,{testID:"touchable_hit_slop"},t.createElement(p,{style:[x.row,{justifyContent:'center'}]},t.createElement(b,{onPress:this.onPress,style:x.hitSlopWrapper,hitSlop:{top:30,bottom:30,left:60,right:60},testID:"touchable_hit_slop_button"},t.createElement(c,{style:x.hitSlopButton},"Press Outside This View"))),t.createElement(p,{style:x.logBox},t.createElement(c,null,n)))}}]),s})(t.Component),w=(function(n){function s(){return babelHelpers.classCallCheck(this,s),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).apply(this,arguments))}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){return t.createElement(p,null,t.createElement(b,{disabled:!0,style:[x.row,x.block]},t.createElement(c,{style:x.disabledButton},"Disabled TouchableOpacity")),t.createElement(b,{disabled:!1,style:[x.row,x.block]},t.createElement(c,{style:x.button},"Enabled TouchableOpacity")),t.createElement(u,{activeOpacity:1,disabled:!0,underlayColor:"rgb(210, 230, 255)",style:[x.row,x.block],onPress:function(){return console.log('custom THW text - highlight')}},t.createElement(c,{style:x.disabledButton},"Disabled TouchableHighlight")),t.createElement(u,{activeOpacity:1,underlayColor:"rgb(210, 230, 255)",style:[x.row,x.block],onPress:function(){return console.log('custom THW text - highlight')}},t.createElement(c,{style:x.button},"Enabled TouchableHighlight")),t.createElement(h,{style:[x.row,x.block],onPress:function(){return console.log('custom TNF has been clicked')},background:h.SelectableBackground()},t.createElement(p,null,t.createElement(c,{style:[x.button,x.nativeFeedbackButton]},"Enabled TouchableNativeFeedback"))),t.createElement(h,{disabled:!0,style:[x.row,x.block],onPress:function(){return console.log('custom TNF has been clicked')},background:h.SelectableBackground()},t.createElement(p,null,t.createElement(c,{style:[x.disabledButton,x.nativeFeedbackButton]},"Disabled TouchableNativeFeedback"))))}}]),s})(t.Component),_=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={hoverOver:!1},n._handlePress=function(){n.setState({hoverOver:!n.state.hoverOver})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){return t.createElement(p,null,t.createElement(b,{onMouseEnter:this._handlePress,onMouseLeave:this._handlePress,style:[x.row,x.block]},t.createElement(c,{style:this.state.hoverOver?{color:'red'}:{color:'blue'}},"Touchable Opacity with mouse enter/exit events")),t.createElement(u,{onMouseEnter:function(){return console.log('Mouse Enter')},onMouseLeave:function(){return console.log('Mouse Exit')},activeOpacity:1,disabled:!0,animationVelocity:0,underlayColor:"rgb(210, 230, 255)",style:[x.row,x.block],onPress:function(){return console.log('custom THW text - highlight')}},t.createElement(c,{style:x.disabledButton},"Touchable Highlight with mouse event logging")))}}]),s})(t.Component),H=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(l)))).state={eventLog:[]},n._appendEvent=function(t,s){var o,l=n.state.eventLog.slice(0,5);0==s.button?o='left':2==s.button&&(o='right');var c='';s.shiftKey&&(c+='shift, '),s.ctrlKey&&(c+='ctrl, '),s.altKey&&(c+='alt, '),s.metaKey&&(c+='meta, '),c.length>0&&(c=' - '+c.slice(0,-2)+' pressed'),l.unshift(o+t+c),n.setState({eventLog:l})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n=this;return t.createElement(p,{testID:"touchable_feedback_mouse_events"},t.createElement(p,{style:[x.row,{justifyContent:'center'}]},t.createElement(b,{style:x.wrapper,testID:"touchable_feedback_mouse_events_button",accessibilityLabel:"touchable feedback mouse events",accessibilityTraits:"button",accessibilityComponentType:"button",onPressIn:function(t){return n._appendEvent('MouseIn',t.nativeEvent)},onPressOut:function(t){return n._appendEvent('MouseOut',t.nativeEvent)}},t.createElement(c,{style:x.button},"Click Me"))),t.createElement(p,{testID:"touchable_feedback_mouse_events_console",style:x.eventLogBox},this.state.eventLog.map(function(n,s){return t.createElement(c,{key:s},n)})))}}]),s})(t.Component),T={uri:'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small'},x=l.create({row:{justifyContent:'center',flexDirection:'row'},icon:{width:24,height:24},image:{width:50,height:50},text:{fontSize:16},block:{padding:10},button:{color:'#007AFF'},disabledButton:{color:'#007AFF',opacity:.5},nativeFeedbackButton:{textAlign:'center',margin:10},hitSlopButton:{color:'white'},wrapper:{borderRadius:8},wrapperCustom:{borderRadius:8,padding:6},hitSlopWrapper:{backgroundColor:'red',marginVertical:30},logBox:{padding:20,margin:10,borderWidth:l.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9'},eventLogBox:{padding:10,margin:10,height:120,borderWidth:l.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9'},forceTouchBox:{padding:10,margin:10,borderWidth:l.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9',alignItems:'center'},textBlock:{fontWeight:'500',color:'blue'}})},357,[85,170,23]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.StyleSheet,o=n.Text,s=n.View,c=r(d[2]);!(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var o=arguments.length,s=new Array(o),c=0;c<o;c++)s[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(s)))).state={showSampleViews:!1,showTextView:!1},n}babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){var n=this;return t.createElement(s,null,t.createElement(Button,{onPress:function(){return n.setState({showSampleViews:!n.state.showSampleViews})},title:this.state.showSampleViews?'Hide Sample Focus event View':'Show Sample View'}),t.createElement(Button,{onPress:function(){return n.defaultFocusView.focus()},title:'Give Focus to default View'}),this.state.showSampleViews?t.createElement(s,null,t.createElement(o,null," Enter on any view will move focus within this view "),t.createElement(TouchableNativeFeedback,{onPress:function(){return n.defaultFocusView.focus()}},t.createElement(s,{ref:function(t){return n.view1=t},style:[styles.focusView]},t.createElement(o,null," Test View"))),t.createElement(TouchableNativeFeedback,{onPress:function(){return n.view2.focus()}},t.createElement(s,{ref:function(t){return n.defaultFocusView=t},style:[styles.focusView]},t.createElement(o,null," Default Focus View "))),t.createElement(TouchableNativeFeedback,{onPress:function(){return n.view1.focus()}},t.createElement(s,{ref:function(t){return n.view2=t},style:[styles.focusView],onFocusChange:function(t){n.setState({showTextView:t})}},t.createElement(o,null," Show sample textview on focus "))),this.state.showTextView?t.createElement(o,null," This is a sample Text"):null):null)}}])})(t.Component);e.title='<View>',e.description="Basic building block of all UI, examples that demonstrate some of the many styles available.",e.displayName='ViewExample',e.examples=[{title:'Background Color',render:function(){return t.createElement(s,{style:{backgroundColor:'#527FE4',padding:5}},t.createElement(o,{style:{fontSize:11}},"Blue background"))}},{title:'Border',render:function(){return t.createElement(s,{style:{borderColor:'#527FE4',borderWidth:5,padding:10}},t.createElement(o,{style:{fontSize:11}},"5px blue border"))}},{title:'Padding/Margin',render:function(){var n=l.create({box:{backgroundColor:'#527FE4',borderColor:'#000033',borderWidth:1}});return t.createElement(s,{style:{borderColor:'#bb0000',borderWidth:.5}},t.createElement(s,{style:[n.box,{padding:5}]},t.createElement(o,{style:{fontSize:11}},"5px padding")),t.createElement(s,{style:[n.box,{margin:5}]},t.createElement(o,{style:{fontSize:11}},"5px margin")),t.createElement(s,{style:[n.box,{margin:5,padding:5,alignSelf:'flex-start'}]},t.createElement(o,{style:{fontSize:11}},"5px margin and padding,"),t.createElement(o,{style:{fontSize:11}},"widthAutonomous=true")))}},{title:'Border Radius',render:function(){return t.createElement(s,{style:{borderWidth:.5,borderRadius:5,padding:5}},t.createElement(o,{style:{fontSize:11}},"Too much use of `borderRadius` (especially large radii) on anything which is scrolling may result in dropped frames. Use sparingly."))}},{title:'Border Style',render:function(){var n=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var o=arguments.length,s=new Array(o),c=0;c<o;c++)s[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(s)))).state={showBorder:!0},n._handlePress=function(){n.setState({showBorder:!n.state.showBorder})},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(c,{onPress:this._handlePress},t.createElement(s,null,t.createElement(s,{style:{borderWidth:1,borderStyle:this.state.showBorder?'dashed':null,padding:5}},t.createElement(o,{style:{fontSize:11}},"Dashed border style")),t.createElement(s,{style:{marginTop:5,borderWidth:1,borderRadius:5,borderStyle:this.state.showBorder?'dotted':null,padding:5}},t.createElement(o,{style:{fontSize:11}},"Dotted border style"))))}}]),l})(t.Component);return t.createElement(n,null)}},{title:'Circle with Border Radius',render:function(){return t.createElement(s,{style:{borderRadius:10,borderWidth:1,width:20,height:20}})}},{title:'Overflow',render:function(){var n=l.create({container:{borderWidth:l.hairlineWidth,height:12,marginBottom:8,marginEnd:16,width:95},content:{height:20,width:200}});return t.createElement(s,{style:{flexDirection:'row'}},t.createElement(s,{style:n.container},t.createElement(s,{style:[l.absoluteFill]},t.createElement(o,{style:n.content},"undefined"))),t.createElement(s,{style:n.container},t.createElement(s,{style:[l.absoluteFill,{overflow:'hidden'}]},t.createElement(o,{style:n.content},"hidden"))),t.createElement(s,{style:n.container},t.createElement(s,{style:[l.absoluteFill,{overflow:'visible'}]},t.createElement(o,{style:n.content},"visible"))))}},{title:'Opacity',render:function(){return t.createElement(s,null,t.createElement(s,{style:{opacity:0}},t.createElement(o,null,"Opacity 0")),t.createElement(s,{style:{opacity:.1}},t.createElement(o,null,"Opacity 0.1")),t.createElement(s,{style:{opacity:.3}},t.createElement(o,null,"Opacity 0.3")),t.createElement(s,{style:{opacity:.5}},t.createElement(o,null,"Opacity 0.5")),t.createElement(s,{style:{opacity:.7}},t.createElement(o,null,"Opacity 0.7")),t.createElement(s,{style:{opacity:.9}},t.createElement(o,null,"Opacity 0.9")),t.createElement(s,{style:{opacity:1}},t.createElement(o,null,"Opacity 1")))}},{title:'ZIndex',render:function(){var n=l.create({zIndex:{justifyContent:'space-around',width:100,height:50,marginTop:-10}}),u=(function(l){function u(){var t,n;babelHelpers.classCallCheck(this,u);for(var l=arguments.length,o=new Array(l),s=0;s<l;s++)o[s]=arguments[s];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(u)).call.apply(t,[this].concat(o)))).state={flipped:!1},n._handlePress=function(){n.setState({flipped:!n.state.flipped})},n}return babelHelpers.inherits(u,l),babelHelpers.createClass(u,[{key:"render",value:function(){var l=this.state.flipped?[-1,0,1,2]:[2,1,0,-1];return t.createElement(c,{onPress:this._handlePress},t.createElement(s,null,t.createElement(o,{style:{paddingBottom:10}},"Tap to flip sorting order"),t.createElement(s,{style:[n.zIndex,{marginTop:0,backgroundColor:'#E57373',zIndex:l[0]}]},t.createElement(o,null,"ZIndex ",l[0])),t.createElement(s,{style:[n.zIndex,{marginLeft:50,backgroundColor:'#FFF176',zIndex:l[1]}]},t.createElement(o,null,"ZIndex ",l[1])),t.createElement(s,{style:[n.zIndex,{marginLeft:100,backgroundColor:'#81C784',zIndex:l[2]}]},t.createElement(o,null,"ZIndex ",l[2])),t.createElement(s,{style:[n.zIndex,{marginLeft:150,backgroundColor:'#64B5F6',zIndex:l[3]}]},t.createElement(o,null,"ZIndex ",l[3]))))}}]),u})(t.Component);return t.createElement(u,null)}}]},358,[85,170,182]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.Image,s=n.StyleSheet,o=n.Text,c=n.TouchableWithoutFeedback,p=n.TouchableOpacity,b=n.View,u=n.ViewPagerAndroid,h=['#fdc08e','#fff6b9','#99d1b7','#dde5fe','#f79273'],f=['https://apod.nasa.gov/apod/image/1410/20141008tleBaldridge001h990.jpg','https://apod.nasa.gov/apod/image/1409/volcanicpillar_vetter_960.jpg','https://apod.nasa.gov/apod/image/1409/m27_snyder_960.jpg','https://apod.nasa.gov/apod/image/1409/PupAmulti_rot0.jpg','https://apod.nasa.gov/apod/image/1510/lunareclipse_27Sep_beletskycrop4.jpg'],y=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var s=arguments.length,o=new Array(s),c=0;c<s;c++)o[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(o)))).state={likes:7},n.onClick=function(){n.setState({likes:n.state.likes+1})},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(b,{style:v.likeContainer},t.createElement(p,{onPress:this.onClick,style:v.likeButton},t.createElement(o,{style:v.likesText},"\ud83d\udc4d Like")),t.createElement(o,{style:v.likesText},this.state.likes+' likes'))}}]),l})(t.Component),C=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var s=arguments.length,o=new Array(s),c=0;c<s;c++)o[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(o))))._handlePress=function(){n.props.enabled&&n.props.onPress&&n.props.onPress()},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(c,{onPress:this._handlePress},t.createElement(b,{style:[v.button,this.props.enabled?{}:v.buttonDisabled]},t.createElement(o,{style:v.buttonText},this.props.text)))}}]),l})(t.Component),E=(function(n){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){var n=(this.props.progress.position+this.props.progress.offset)/4*this.props.size;return t.createElement(b,{style:[v.progressBarContainer,{width:this.props.size}]},t.createElement(b,{style:[v.progressBar,{width:n}]}))}}]),l})(t.Component),P=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var l=arguments.length,o=new Array(l),c=0;c<l;c++)o[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(o)))).state={page:0,animationsAreEnabled:!0,scrollEnabled:!0,progress:{position:0,offset:0}},n.onPageSelected=function(t){n.setState({page:t.nativeEvent.position})},n.onPageScroll=function(t){n.setState({progress:t.nativeEvent})},n.onPageScrollStateChanged=function(t){n.setState({scrollState:t})},n.move=function(t){var l=n.state.page+t;n.go(l)},n.go=function(t){n.state.animationsAreEnabled?n.viewPager.setPage(t):n.viewPager.setPageWithoutAnimation(t),n.setState({page:t})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){for(var n=this,s=[],c=0;c<5;c++){var p={backgroundColor:h[c%h.length],alignItems:'center',padding:20};s.push(t.createElement(b,{key:c,style:p,collapsable:!1},t.createElement(l,{style:v.image,source:{uri:f[c%h.length]}}),t.createElement(y,null)))}var P=this.state,k=P.page,S=P.animationsAreEnabled;return t.createElement(b,{style:v.container},t.createElement(u,{style:v.viewPager,initialPage:0,scrollEnabled:this.state.scrollEnabled,onPageScroll:this.onPageScroll,onPageSelected:this.onPageSelected,onPageScrollStateChanged:this.onPageScrollStateChanged,pageMargin:10,ref:function(t){n.viewPager=t}},s),t.createElement(b,{style:v.buttons},t.createElement(C,{enabled:!0,text:this.state.scrollEnabled?'Scroll Enabled':'Scroll Disabled',onPress:function(){return n.setState({scrollEnabled:!n.state.scrollEnabled})}})),t.createElement(b,{style:v.buttons},S?t.createElement(C,{text:"Turn off animations",enabled:!0,onPress:function(){return n.setState({animationsAreEnabled:!1})}}):t.createElement(C,{text:"Turn animations back on",enabled:!0,onPress:function(){return n.setState({animationsAreEnabled:!0})}}),t.createElement(o,{style:v.scrollStateText},"ScrollState[ ",this.state.scrollState," ]")),t.createElement(b,{style:v.buttons},t.createElement(C,{text:"Start",enabled:k>0,onPress:function(){return n.go(0)}}),t.createElement(C,{text:"Prev",enabled:k>0,onPress:function(){return n.move(-1)}}),t.createElement(o,{style:v.buttonText},"Page ",k+1," / ",5),t.createElement(E,{size:100,progress:this.state.progress}),t.createElement(C,{text:"Next",enabled:k<4,onPress:function(){return n.move(1)}}),t.createElement(C,{text:"Last",enabled:k<4,onPress:function(){return n.go(4)}})))}}]),s})(t.Component);P.title='<ViewPagerAndroid>',P.description='Container that allows to flip left and right between child views.';var v=s.create({buttons:{flexDirection:'row',height:30,backgroundColor:'black',alignItems:'center',justifyContent:'space-between'},button:{flex:1,width:0,margin:5,borderColor:'gray',borderWidth:1,backgroundColor:'gray'},buttonDisabled:{backgroundColor:'black',opacity:.5},buttonText:{color:'white'},scrollStateText:{color:'#99d1b7'},container:{flex:1,backgroundColor:'white'},image:{width:300,height:200,padding:20},likeButton:{backgroundColor:'rgba(0, 0, 0, 0.1)',borderColor:'#333333',borderWidth:1,borderRadius:5,flex:1,margin:8,padding:8},likeContainer:{flexDirection:'row'},likesText:{flex:1,fontSize:18,alignSelf:'center'},progressBarContainer:{height:10,margin:10,borderColor:'#eeeeee',borderWidth:2},progressBar:{alignSelf:'flex-start',flex:1,backgroundColor:'#eeeeee'},viewPager:{flex:1}});m.exports=P},359,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=n.StyleSheet,s=n.Text,l=n.TextInput,c=n.TouchableWithoutFeedback,u=n.TouchableOpacity,b=n.View,h=n.WebView,p='rgba(255,255,255,0.8)',f='urlInput',w='webview',y='https://m.facebook.com',E=['file://*','http://*','https://*'],C=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,l=new Array(s),c=0;c<s;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(l)))).state={url:y,status:'No Page Loaded',backButtonEnabled:!1,forwardButtonEnabled:!1,loading:!0,scalesPageToFit:!0},n.inputText='',n.handleTextInputChange=function(t){var o=t.nativeEvent.text;/^[a-zA-Z-_]+:/.test(o)||(o='http://'+o),n.inputText=o},n.goBack=function(){n.refs[w].goBack()},n.goForward=function(){n.refs[w].goForward()},n.reload=function(){n.refs[w].reload()},n.onShouldStartLoadWithRequest=function(t){return!0},n.onNavigationStateChange=function(t){n.setState({backButtonEnabled:t.canGoBack,forwardButtonEnabled:t.canGoForward,url:t.url,status:t.title,loading:t.loading,scalesPageToFit:!0})},n.onSubmitEditing=function(t){n.pressGoButton()},n.pressGoButton=function(){var t=n.inputText.toLowerCase();t===n.state.url?n.reload():n.setState({url:t}),n.refs[f].blur()},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return this.inputText=this.state.url,t.createElement(b,{style:[P.container]},t.createElement(b,{style:[P.addressBarRow]},t.createElement(u,{onPress:this.goBack,style:this.state.backButtonEnabled?P.navButton:P.disabledButton},t.createElement(s,null,'<')),t.createElement(u,{onPress:this.goForward,style:this.state.forwardButtonEnabled?P.navButton:P.disabledButton},t.createElement(s,null,'>')),t.createElement(l,{ref:f,autoCapitalize:"none",defaultValue:this.state.url,onSubmitEditing:this.onSubmitEditing,onChange:this.handleTextInputChange,clearButtonMode:"while-editing",style:P.addressBarTextInput}),t.createElement(u,{onPress:this.pressGoButton},t.createElement(b,{style:P.goButton},t.createElement(s,null,"Go!")))),t.createElement(h,{ref:w,automaticallyAdjustContentInsets:!1,style:P.webView,source:{uri:this.state.url},javaScriptEnabled:!0,domStorageEnabled:!0,decelerationRate:"normal",onNavigationStateChange:this.onNavigationStateChange,onShouldStartLoadWithRequest:this.onShouldStartLoadWithRequest,startInLoadingState:!0,scalesPageToFit:this.state.scalesPageToFit}),t.createElement(b,{style:P.statusBar},t.createElement(s,{style:P.statusBarText},this.state.status)))}}]),o})(t.Component),v=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,l=new Array(s),c=0;c<s;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(l))))._handlePress=function(){!1!==n.props.enabled&&n.props.onPress&&n.props.onPress()},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(c,{onPress:this._handlePress},t.createElement(b,{style:P.button},t.createElement(s,null,this.props.text)))}}]),o})(t.Component),S=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,l=new Array(s),c=0;c<s;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(l)))).state={scalingEnabled:!0},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){var n=this;return t.createElement(b,null,t.createElement(h,{style:{backgroundColor:p,height:200},source:{uri:'https://facebook.github.io/react/'},scalesPageToFit:this.state.scalingEnabled}),t.createElement(b,{style:P.buttons},this.state.scalingEnabled?t.createElement(v,{text:"Scaling:ON",enabled:!0,onPress:function(){return n.setState({scalingEnabled:!1})}}):t.createElement(v,{text:"Scaling:OFF",enabled:!0,onPress:function(){return n.setState({scalingEnabled:!0})}})))}}]),o})(t.Component),k=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,l=new Array(s),c=0;c<s;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(l)))).webview=null,n.state={messagesReceivedFromWebView:0,message:''},n.onMessage=function(t){return n.setState({messagesReceivedFromWebView:n.state.messagesReceivedFromWebView+1,message:t.nativeEvent.data})},n.postMessage=function(){n.webview&&n.webview.postMessage('"Hello" from React Native!')},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){var n=this,o=this.state,l=o.messagesReceivedFromWebView,c=o.message;return t.createElement(b,{style:[P.container,{height:200}]},t.createElement(b,{style:P.container},t.createElement(s,null,"Messages received from web view: ",l),t.createElement(s,null,c||'(No message)'),t.createElement(b,{style:P.buttons},t.createElement(v,{text:"Send Message to Web View",enabled:!0,onPress:this.postMessage}))),t.createElement(b,{style:P.container},t.createElement(h,{ref:function(t){n.webview=t},style:{backgroundColor:p,height:100},originWhitelist:E,source:r(d[2]),onMessage:this.onMessage})))}}]),o})(t.Component),B=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,l=new Array(s),c=0;c<s;c++)l[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(l)))).webview=null,n.injectJS=function(){n.webview&&n.webview.injectJavaScript('document.write("Injected JS ")')},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){var n=this;return t.createElement(b,null,t.createElement(h,{ref:function(t){n.webview=t},style:{backgroundColor:p,height:300},source:{uri:'https://www.facebook.com'},scalesPageToFit:!0}),t.createElement(b,{style:P.buttons},t.createElement(v,{text:"Inject JS",enabled:!0,onPress:this.injectJS})))}}]),o})(t.Component),P=o.create({container:{flex:1,backgroundColor:'#3b5998'},addressBarRow:{flexDirection:'row',padding:8},webView:{backgroundColor:p,height:350},addressBarTextInput:{backgroundColor:p,borderColor:'transparent',borderRadius:3,borderWidth:1,height:24,paddingLeft:10,paddingTop:3,paddingBottom:3,flex:1,fontSize:14},navButton:{width:20,padding:3,marginRight:3,alignItems:'center',justifyContent:'center',backgroundColor:p,borderColor:'transparent',borderRadius:3},disabledButton:{width:20,padding:3,marginRight:3,alignItems:'center',justifyContent:'center',backgroundColor:'rgba(255,255,255,0.25)',borderColor:'transparent',borderRadius:3},goButton:{height:24,padding:3,marginLeft:8,alignItems:'center',backgroundColor:p,borderColor:'transparent',borderRadius:3,alignSelf:'stretch'},statusBar:{flexDirection:'row',alignItems:'center',paddingLeft:5,height:22},statusBarText:{color:'white',fontSize:13},spinner:{width:20,marginRight:6},buttons:{flexDirection:'row',height:30,backgroundColor:'black',alignItems:'center',justifyContent:'space-between'},button:{flex:.5,width:0,margin:5,borderColor:'gray',borderWidth:1,backgroundColor:'gray'}});e.displayName=void 0,e.title='<WebView>',e.description='Base component to display web content',e.examples=[{title:'Simple Browser',render:function(){return t.createElement(C,null)}},{title:'Scale Page to Fit',render:function(){return t.createElement(S,null)}},{title:'Bundled HTML',render:function(){return t.createElement(h,{style:{backgroundColor:p,height:100},originWhitelist:E,source:r(d[3]),scalesPageToFit:!0})}},{title:'Static HTML',render:function(){return t.createElement(h,{style:{backgroundColor:p,height:100},source:{html:"\n<!DOCTYPE html>\n\n<html>\n  <head>\n    <title>Hello Static World</title>\n    <meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\">\n    <meta name=\"viewport\" content=\"width=320, user-scalable=no\">\n    <style type=\"text/css\">\n      body {\n        margin: 0;\n        padding: 0;\n        font: 62.5% arial, sans-serif;\n        background: #ccc;\n      }\n      h1 {\n        padding: 45px;\n        margin: 0;\n        text-align: center;\n        color: #33f;\n      }\n    </style>\n  </head>\n  <body>\n    <h1>Hello Static World</h1>\n  </body>\n</html>\n"},scalesPageToFit:!0})}},{title:'POST Test',render:function(){return t.createElement(h,{style:{backgroundColor:p,height:100},source:{uri:'http://www.posttestserver.com/post.php',method:'POST',body:'foo=bar&bar=foo'},scalesPageToFit:!1})}},{title:'Messaging Test',render:function(){return t.createElement(k,null)}},{title:'Inject JavaScript',render:function(){return t.createElement(B,null)}}]},360,[85,170,361,362]);
-__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",scales:[1],hash:"63afa4865a5c48dac612914bb385f093",name:"messagingtest",type:"html"})},361,[129]);
-__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",scales:[1],hash:"c51057524a9d1776c963663369289d1a",name:"helloworld",type:"html"})},362,[129]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),c=l.AccessibilityInfo,n=l.StyleSheet,s=l.Text,o=l.View,b=l.ToastAndroid,u=l.TouchableWithoutFeedback,h=r(d[2]),y=r(d[3]),E=['auto','yes','no','no-hide-descendants'],p=(function(l){function n(){var t,l;babelHelpers.classCallCheck(this,n);for(var c=arguments.length,s=new Array(c),o=0;o<c;o++)s[o]=arguments[o];return(l=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(n)).call.apply(t,[this].concat(s)))).state={count:0,backgroundImportantForAcc:0,forgroundImportantForAcc:0,screenReaderEnabled:!1},l._handleScreenReaderToggled=function(t){l.setState({screenReaderEnabled:t})},l._addOne=function(){l.setState({count:++l.state.count})},l._changeBackgroundImportantForAcc=function(){l.setState({backgroundImportantForAcc:(l.state.backgroundImportantForAcc+1)%4})},l._changeForgroundImportantForAcc=function(){l.setState({forgroundImportantForAcc:(l.state.forgroundImportantForAcc+1)%4})},l}return babelHelpers.inherits(n,l),babelHelpers.createClass(n,[{key:"componentDidMount",value:function(){var t=this;c.addEventListener('change',this._handleScreenReaderToggled),c.fetch().done(function(l){t.setState({screenReaderEnabled:l})})}},{key:"componentWillUnmount",value:function(){c.removeEventListener('change',this._handleScreenReaderToggled)}},{key:"render",value:function(){return t.createElement(y,{title:'Accessibility'},t.createElement(h,{title:"Nonaccessible view with TextViews"},t.createElement(o,null,t.createElement(s,{style:{color:'green'}},"This is"),t.createElement(s,{style:{color:'blue'}},"nontouchable normal view."))),t.createElement(h,{title:"Accessible view with TextViews wihout label"},t.createElement(o,{accessible:!0},t.createElement(s,{style:{color:'green'}},"This is"),t.createElement(s,{style:{color:'blue'}},"nontouchable accessible view without label."))),t.createElement(h,{title:"Accessible view with TextViews with label"},t.createElement(o,{accessible:!0,accessibilityLabel:"I have label, so I read it instead of embedded text."},t.createElement(s,{style:{color:'green'}},"This is"),t.createElement(s,{style:{color:'blue'}},"nontouchable accessible view with label."))),t.createElement(h,{title:"Touchable with accessibilityRole = button"},t.createElement(u,{onPress:function(){return b.show('Toasts work by default',b.SHORT)},accessibilityRole:"button"},t.createElement(o,{style:w.embedded},t.createElement(s,null,"Click me"),t.createElement(s,null,"Or not")))),t.createElement(h,{title:"Disabled Touchable with accessibilityRole = button"},t.createElement(u,{onPress:function(){return b.show('Toasts work by default',b.SHORT)},accessibilityRole:"button",accessibilityStates:['disabled'],disabled:!0},t.createElement(o,null,t.createElement(s,null,"I am disabled"),t.createElement(s,null,"Clicking me will not trigger any action.")))),t.createElement(h,{title:"Touchable with accessibilityRole = button and accessibilityHint"},t.createElement(u,{onPress:function(){return b.show('Toasts work by default',b.SHORT)},accessibilityRole:"button",accessibilityHint:"Triggers\r Toasts"},t.createElement(o,null,t.createElement(s,null,"Click Me!")))),t.createElement(h,{title:"Accessible View with hint, role, and state"},t.createElement(o,{accessible:!0,accessibilityRole:"button",accessibilityStates:['selected'],accessibilityHint:"accessibility hint"},t.createElement(s,null,"Accessible view with hint, role, and state"),t.createElement(s,{style:{color:'gray'}},"Talkback will say: accessibility hint button, selected",' '))),t.createElement(h,{title:"Accessible View with label, hint, role, and state"},t.createElement(o,{accessible:!0,accessibilityLabel:"accessibility Label",accessibilityRole:"button",accessibilityStates:['selected'],accessibilityHint:"accessibility Hint"},t.createElement(s,null,"Accessible view with label, hint, role, and state"),t.createElement(s,{style:{color:'gray'}},"Talkback will say: accessibility label, hint button, selected",' '))),t.createElement(h,{title:"Accessible View with no other properties set"},t.createElement(o,{accessible:!0},t.createElement(s,null,"This accessible view has no label, so the text is read."))),t.createElement(h,{title:"LiveRegion"},t.createElement(u,{onPress:this._addOne},t.createElement(o,{style:w.embedded},t.createElement(s,null,"Click me"))),t.createElement(s,{accessibilityLiveRegion:"polite"},"Clicked ",this.state.count," times")),t.createElement(h,{title:"Check if the screen reader is enabled"},t.createElement(s,null,"The screen reader is",' ',this.state.screenReaderEnabled?'enabled':'disabled',".")),t.createElement(h,{title:"Overlapping views and importantForAccessibility property"},t.createElement(o,{style:w.container},t.createElement(o,{style:{position:'absolute',left:10,top:10,right:10,height:100,backgroundColor:'green'},accessible:!0,accessibilityLabel:"First layout",importantForAccessibility:E[this.state.backgroundImportantForAcc]},t.createElement(o,{accessible:!0},t.createElement(s,{style:{fontSize:25}},"Hello"))),t.createElement(o,{style:{position:'absolute',left:10,top:25,right:10,height:110,backgroundColor:'yellow',opacity:.5},accessible:!0,accessibilityLabel:"Second layout",importantForAccessibility:E[this.state.forgroundImportantForAcc]},t.createElement(o,{accessible:!0},t.createElement(s,{style:{fontSize:20}},"world")))),t.createElement(u,{onPress:this._changeBackgroundImportantForAcc},t.createElement(o,{style:w.embedded},t.createElement(s,null,"Change importantForAccessibility for background layout."))),t.createElement(o,{accessible:!0},t.createElement(s,null,"Background layout importantForAccessibility"),t.createElement(s,null,E[this.state.backgroundImportantForAcc])),t.createElement(u,{onPress:this._changeForgroundImportantForAcc},t.createElement(o,{style:w.embedded},t.createElement(s,null,"Change importantForAccessibility for forground layout."))),t.createElement(o,{accessible:!0},t.createElement(s,null,"Forground layout importantForAccessibility"),t.createElement(s,null,E[this.state.forgroundImportantForAcc]))))}}]),n})(t.Component);p.title='Accessibility',p.description='Examples of using Accessibility API.';var w=n.create({embedded:{backgroundColor:'yellow',padding:10},container:{flex:1,backgroundColor:'white',padding:10,height:150}});m.exports=p},363,[85,170,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.Alert,o=n.StyleSheet,s=n.Text,u=n.TouchableHighlight,c=n.View,p=r(d[2]),b="Credibly reintermediate next-generation potentialities after goal-oriented catalysts for change. Dynamically revolutionize.",f=(function(n){function o(){return babelHelpers.classCallCheck(this,o),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).apply(this,arguments))}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(c,null,t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Alert Title',b)}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert with message and default button"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Alert Title',b,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert with one button"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Alert Title',b,[{text:'Cancel',onPress:function(){return console.log('Cancel Pressed!')}},{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert with two buttons"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Alert Title',null,[{text:'Foo',onPress:function(){return console.log('Foo Pressed!')}},{text:'Bar',onPress:function(){return console.log('Bar Pressed!')}},{text:'Baz',onPress:function(){return console.log('Baz Pressed!')}}])}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert with three buttons"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Foo Title',b,'..............'.split('').map(function(t,n){return{text:'Button '+n,onPress:function(){return console.log('Pressed '+n)}}}))}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert with too many buttons"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('Alert Title',null,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}],{cancelable:!1})}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert that cannot be dismissed"))),t.createElement(u,{style:P.wrapper,onPress:function(){return l.alert('',b,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},t.createElement(c,{style:P.button},t.createElement(s,null,"Alert without title"))))}}]),o})(t.Component),y=(function(n){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(p,{title:'Alert'},t.createElement(f,null))}}]),l})(t.Component);y.title='Alert',y.description="Alerts display a concise and informative message and prompt the user to make a decision.";var P=o.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}});m.exports={AlertExample:y,SimpleAlertExampleBlock:f}},364,[85,170,302]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=n.Animated,o=n.Easing,l=n.StyleSheet,u=n.Text,c=n.View,p=r(d[2]);e.framework='React',e.title='Animated - Examples',e.description="Animated provides a powerful and easy-to-use API for building modern, interactive user experiences.",e.examples=[{title:'FadeInView',description:"Uses a simple timing animation to bring opacity from 0 to 1 when the component mounts.",render:function(){var n=(function(n){function o(t){var n;return babelHelpers.classCallCheck(this,o),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).call(this,t))).state={fadeAnim:new s.Value(0)},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"componentDidMount",value:function(){s.timing(this.state.fadeAnim,{toValue:1,duration:2e3}).start()}},{key:"render",value:function(){return t.createElement(s.View,{style:{opacity:this.state.fadeAnim}},this.props.children)}}]),o})(t.Component),o=(function(s){function o(t){var n;return babelHelpers.classCallCheck(this,o),(n=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(o).call(this,t))).state={show:!0},n}return babelHelpers.inherits(o,s),babelHelpers.createClass(o,[{key:"render",value:function(){var s=this;return t.createElement(c,null,t.createElement(p,{onPress:function(){s.setState(function(t){return{show:!t.show}})}},"Press to ",this.state.show?'Hide':'Show'),this.state.show&&t.createElement(n,null,t.createElement(c,{style:h.content},t.createElement(u,null,"FadeInView"))))}}]),o})(t.Component);return t.createElement(o,null)}},{title:'Transform Bounce',description:"One `Animated.Value` is driven by a spring with custom constants and mapped to an ordered set of transforms.  Each transform has an interpolation to convert the value into the right range and units.",render:function(){var n=this;return this.anim=this.anim||new s.Value(0),t.createElement(c,null,t.createElement(p,{onPress:function(){s.spring(n.anim,{toValue:0,velocity:3,tension:-10,friction:1}).start()}},"Press to Fling it!"),t.createElement(s.View,{style:[h.content,{transform:[{scale:this.anim.interpolate({inputRange:[0,1],outputRange:[1,4]})},{translateX:this.anim.interpolate({inputRange:[0,1],outputRange:[0,500]})},{rotate:this.anim.interpolate({inputRange:[0,1],outputRange:['0deg','360deg']})}]}]},t.createElement(u,null,"Transforms!")))}},{title:'Composite Animations with Easing',description:"Sequence, parallel, delay, and stagger with different easing functions.",render:function(){var n=this;return this.anims=this.anims||[1,2,3].map(function(){return new s.Value(0)}),t.createElement(c,null,t.createElement(p,{onPress:function(){var t=s.timing;s.sequence([t(n.anims[0],{toValue:200,easing:o.linear}),s.delay(400),t(n.anims[0],{toValue:0,easing:o.elastic(2)}),s.delay(400),s.stagger(200,n.anims.map(function(n){return t(n,{toValue:200})}).concat(n.anims.map(function(n){return t(n,{toValue:0})}))),s.delay(400),s.parallel([o.inOut(o.quad),o.back(1.5),o.ease].map(function(s,o){return t(n.anims[o],{toValue:320,easing:s,duration:3e3})})),s.delay(400),s.stagger(200,n.anims.map(function(n){return t(n,{toValue:0,easing:o.bounce,duration:2e3})}))]).start()}},"Press to Animate"),['Composite','Easing','Animations!'].map(function(o,l){return t.createElement(s.View,{key:o,style:[h.content,{left:n.anims[l]}]},t.createElement(u,null,o))}))}},{title:'Rotating Images',description:'Simple Animated.Image rotation.',render:function(){var n=this;return this.anim=this.anim||new s.Value(0),t.createElement(c,null,t.createElement(p,{onPress:function(){s.spring(n.anim,{toValue:0,velocity:3,tension:-10,friction:1}).start()}},"Press to Spin it!"),t.createElement(s.Image,{source:r(d[3]),style:[{width:70,height:70},{transform:[{scale:this.anim.interpolate({inputRange:[0,1],outputRange:[1,10]})},{translateX:this.anim.interpolate({inputRange:[0,1],outputRange:[0,100]})},{rotate:this.anim.interpolate({inputRange:[0,1],outputRange:['0deg','360deg']})}]}]}))}},{title:'Continuous Interactions',description:"Gesture events, chaining, 2D values, interrupting and transitioning animations, etc.",render:function(){return t.createElement(u,null,"Checkout the Gratuitous Animation App!")}}];var h=l.create({content:{backgroundColor:'deepskyblue',borderWidth:1,borderColor:'dodgerblue',padding:20,margin:20,borderRadius:10,alignItems:'center'}})},365,[85,170,366,332]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=s.StyleSheet,l=s.Text,u=s.TouchableHighlight,p=(function(n){function s(){return babelHelpers.classCallCheck(this,s),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).apply(this,arguments))}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){return t.createElement(u,{onPress:this.props.onPress,style:b.button,underlayColor:"grey"},t.createElement(l,null,this.props.children))}}]),s})(t.Component);p.propTypes={onPress:n.func};var b=o.create({button:{borderColor:'#696969',borderRadius:8,borderWidth:1,padding:10,margin:5,alignItems:'center',justifyContent:'center',backgroundColor:'#d3d3d3'}});m.exports=p},366,[85,94,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=n.AppState,l=n.Text,o=n.View,p=(function(n){function p(){var t,n;babelHelpers.classCallCheck(this,p);for(var l=arguments.length,o=new Array(l),u=0;u<l;u++)o[u]=arguments[u];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(p)).call.apply(t,[this].concat(o)))).state={appState:s.currentState,previousAppStates:[],memoryWarnings:0},n._handleMemoryWarning=function(){n.setState({memoryWarnings:n.state.memoryWarnings+1})},n._handleAppStateChange=function(t){var s=n.state.previousAppStates.slice();s.push(n.state.appState),n.setState({appState:t,previousAppStates:s})},n}return babelHelpers.inherits(p,n),babelHelpers.createClass(p,[{key:"componentDidMount",value:function(){s.addEventListener('change',this._handleAppStateChange),s.addEventListener('memoryWarning',this._handleMemoryWarning)}},{key:"componentWillUnmount",value:function(){s.removeEventListener('change',this._handleAppStateChange),s.removeEventListener('memoryWarning',this._handleMemoryWarning)}},{key:"render",value:function(){return this.props.showMemoryWarnings?t.createElement(o,null,t.createElement(l,null,this.state.memoryWarnings)):this.props.showCurrentOnly?t.createElement(o,null,t.createElement(l,null,this.state.appState)):t.createElement(o,null,t.createElement(l,null,JSON.stringify(this.state.previousAppStates)))}}]),p})(t.Component);e.title='AppState',e.description='app background status',e.examples=[{title:'AppState.currentState',description:'Can be null on app initialization',render:function(){return t.createElement(l,null,s.currentState)}},{title:'Subscribed AppState:',description:'This changes according to the current state, so you can only ever see it rendered as "active"',render:function(){return t.createElement(p,{showCurrentOnly:!0})}},{title:'Previous states:',render:function(){return t.createElement(p,{showCurrentOnly:!1})}},{platform:'ios',title:'Memory Warnings',description:'In the IOS simulator, hit Shift+Command+M to simulate a memory warning.',render:function(){return t.createElement(p,{showMemoryWarnings:!0})}}]},367,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),t=r(d[1]),b=t.StyleSheet,l=t.View,n=b.create({box:{width:100,height:100},border1:{borderWidth:10,borderColor:'brown'},borderRadius:{borderWidth:10,borderRadius:10,borderColor:'cyan'},border2:{borderWidth:10,borderTopColor:'red',borderRightColor:'yellow',borderBottomColor:'green',borderLeftColor:'blue'},border3:{borderColor:'purple',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40},border4:{borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue'},border5:{borderRadius:50,borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue'},border6:{borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue',borderTopLeftRadius:100},border7:{borderWidth:10,borderColor:'#f007',borderRadius:30,overflow:'hidden'},border7_inner:{backgroundColor:'blue',width:100,height:100},border8:{width:60,height:60,borderColor:'black',marginRight:10,backgroundColor:'lightgrey'},border9:{borderWidth:10,borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'black'},border10:{borderWidth:10,backgroundColor:'white',borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'black',elevation:10},border11:{width:0,height:0,borderStyle:'solid',overflow:'hidden',borderTopWidth:50,borderRightWidth:0,borderBottomWidth:50,borderLeftWidth:100,borderTopColor:'transparent',borderRightColor:'transparent',borderBottomColor:'transparent',borderLeftColor:'red'},border12:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderRadius:20},border13:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderTopColor:'red',borderRightColor:'green',borderBottomColor:'blue',borderLeftColor:'magenta',borderRadius:20},border14:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderTopColor:'red',borderRightColor:'green',borderBottomColor:'blue',borderLeftColor:'magenta',borderTopLeftRadius:10,borderTopRightRadius:40,borderBottomRightRadius:30,borderBottomLeftRadius:40}});e.title='Border',e.description='Demonstrates some of the border styles available to Views.',e.examples=[{title:'Equal-Width / Same-Color',description:'borderWidth & borderColor',render:function(){return o.createElement(l,{style:[n.box,n.border1]})}},{title:'Equal-Width / Same-Color',description:'borderWidth & borderColor & borderRadius',render:function(){return o.createElement(l,{style:[n.box,n.borderRadius]})}},{title:'Equal-Width Borders',description:'borderWidth & border*Color',render:function(){return o.createElement(l,{style:[n.box,n.border2]})}},{title:'Same-Color Borders',description:'border*Width & borderColor',render:function(){return o.createElement(l,{style:[n.box,n.border3]})}},{title:'Custom Borders',description:'border*Width & border*Color',render:function(){return o.createElement(l,{style:[n.box,n.border4]})}},{title:'Custom Borders',description:'border*Width & border*Color',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border5]})}},{title:'Custom Borders',description:'border*Width & border*Color',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border6]})}},{title:'Custom Borders',description:'borderRadius & clipping',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border7]},o.createElement(l,{style:n.border7_inner}))}},{title:'Single Borders',description:'top, left, bottom right',render:function(){return o.createElement(l,{style:{flexDirection:'row'}},o.createElement(l,{style:[n.box,n.border8,{borderTopWidth:5}]}),o.createElement(l,{style:[n.box,n.border8,{borderLeftWidth:5}]}),o.createElement(l,{style:[n.box,n.border8,{borderBottomWidth:5}]}),o.createElement(l,{style:[n.box,n.border8,{borderRightWidth:5}]}))}},{title:'Corner Radii',description:'borderTopLeftRadius & borderBottomRightRadius',render:function(){return o.createElement(l,{style:[n.box,n.border9]})}},{title:'Corner Radii / Elevation',description:'borderTopLeftRadius & borderBottomRightRadius & elevation',platform:'android',render:function(){return o.createElement(l,{style:[n.box,n.border10]})}},{title:'CSS Trick - 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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),n=l.CameraRoll,s=l.Image,o=l.Slider,c=l.StyleSheet,u=l.Switch,p=l.Text,h=l.View,b=l.TouchableOpacity,f=r(d[2]),y=r(d[3]),C=r(d[4]),E=(function(l){function c(){var l,o;babelHelpers.classCallCheck(this,c);for(var u=arguments.length,y=new Array(u),C=0;C<u;C++)y[C]=arguments[C];return(o=babelHelpers.possibleConstructorReturn(this,(l=babelHelpers.getPrototypeOf(c)).call.apply(l,[this].concat(y)))).state={groupTypes:'SavedPhotos',sliderValue:1,bigImages:!0},o._renderImage=function(l){var n=o.state.bigImages?150:75,c=[S.image,{width:n,height:n}],u=l.node.location,f=u?JSON.stringify(u):'Unknown location';return t.createElement(b,{key:l,onPress:o.loadAsset.bind(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(o)),l)},t.createElement(h,{style:S.row},t.createElement(s,{source:l.node.image,style:c}),t.createElement(h,{style:S.info},t.createElement(p,{style:S.url},l.node.image.uri),t.createElement(p,null,f),t.createElement(p,null,l.node.group_name),t.createElement(p,null,new Date(l.node.timestamp).toString()))))},o._onSliderChange=function(t){var l=Object.keys(n.GroupTypesOptions),s=l[Math.floor(t*l.length*.99)];s!==o.state.groupTypes&&o.setState({groupTypes:s})},o._onSwitchChange=function(t){f(o._cameraRollView,'ref should be set'),o._cameraRollView.rendererChanged(),o.setState({bigImages:t})},o}return babelHelpers.inherits(c,l),babelHelpers.createClass(c,[{key:"render",value:function(){var l=this;return t.createElement(h,null,t.createElement(u,{onValueChange:this._onSwitchChange,value:this.state.bigImages}),t.createElement(p,null,(this.state.bigImages?'Big':'Small')+' Images'),t.createElement(o,{value:this.state.sliderValue,onValueChange:this._onSliderChange}),t.createElement(p,null,'Group Type: '+this.state.groupTypes),t.createElement(y,{ref:function(t){l._cameraRollView=t},batchSize:20,groupTypes:this.state.groupTypes,renderImage:this._renderImage}))}},{key:"loadAsset",value:function(t){this.props.navigator&&this.props.navigator.push({title:'Camera Roll Image',component:C,backButtonTitle:'Back',passProps:{asset:t}})}}]),c})(t.Component),S=c.create({row:{flexDirection:'row',flex:1},url:{fontSize:9,marginBottom:14},image:{margin:4},info:{flex:1}});e.title='Camera Roll',e.description="Example component that uses CameraRoll to list user's photos",e.examples=[{title:'Photos',render:function(){return t.createElement(E,null)}}]},369,[85,170,6,370,372]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),u=o.ActivityIndicator,c=o.Alert,h=o.CameraRoll,p=o.Image,l=o.ListView,f=o.PermissionsAndroid,S=(o.Platform,o.StyleSheet),w=o.View,y=r(d[4]),R=r(d[5]),_=s({displayName:'CameraRollView',propTypes:{groupTypes:n.oneOf(['Album','All','Event','Faces','Library','PhotoStream','SavedPhotos']),batchSize:n.number,renderImage:n.func,imagesPerRow:n.number,assetType:n.oneOf(['Photos','Videos','All'])},getDefaultProps:function(){return{groupTypes:'SavedPhotos',batchSize:5,imagesPerRow:1,assetType:'Photos',renderImage:function(s){var n=[T.image,{width:150,height:150}];return t.createElement(p,{source:s.node.image,style:n})}}},getInitialState:function(){var t=new l.DataSource({rowHasChanged:this._rowHasChanged});return{assets:[],groupTypes:this.props.groupTypes,lastCursor:null,assetType:this.props.assetType,noMore:!1,loadingMore:!1,dataSource:t}},rendererChanged:function(){var t=new l.DataSource({rowHasChanged:this._rowHasChanged});this.state.dataSource=t.cloneWithRows(y(this.state.assets,this.props.imagesPerRow))},componentDidMount:function(){this.fetch()},UNSAFE_componentWillReceiveProps:function(t){this.props.groupTypes!==t.groupTypes&&this.fetch(!0)},_fetch:function(t){var s,n;return regeneratorRuntime.async(function(o){for(;;)switch(o.prev=o.next){case 0:if(!t){o.next=3;break}return this.setState(this.getInitialState(),this.fetch),o.abrupt("return");case 3:return o.next=6,regeneratorRuntime.awrap(f.request(f.PERMISSIONS.READ_EXTERNAL_STORAGE,{title:'Permission Explanation',message:'RNTester would like to access your pictures.'}));case 6:if('granted'===o.sent){o.next=10;break}return c.alert('Access to pictures was denied.'),o.abrupt("return");case 10:return delete(s={first:this.props.batchSize,groupTypes:this.props.groupTypes,assetType:this.props.assetType}).groupTypes,this.state.lastCursor&&(s.after=this.state.lastCursor),o.prev=13,o.next=16,regeneratorRuntime.awrap(h.getPhotos(s));case 16:n=o.sent,this._appendAssets(n),o.next=23;break;case 20:o.prev=20,o.t0=o.catch(13),R(o.t0);case 23:case"end":return o.stop()}},null,this,[[13,20]])},fetch:function(t){var s=this;this.state.loadingMore||this.setState({loadingMore:!0},function(){s._fetch(t)})},render:function(){return t.createElement(l,{renderRow:this._renderRow,renderFooter:this._renderFooterSpinner,onEndReached:this._onEndReached,style:T.container,dataSource:this.state.dataSource,enableEmptySections:!0})},_rowHasChanged:function(t,s){if(t.length!==s.length)return!0;for(var n=0;n<t.length;n++)if(t[n]!==s[n])return!0;return!1},_renderFooterSpinner:function(){return this.state.noMore?null:t.createElement(u,null)},_renderRow:function(s,n,o){var u=this,c=s.map(function(t){return null===t?null:u.props.renderImage(t)});return t.createElement(w,{style:T.row},c)},_appendAssets:function(t){var s=t.edges,n={loadingMore:!1};t.page_info.has_next_page||(n.noMore=!0),s.length>0&&(n.lastCursor=t.page_info.end_cursor,n.assets=this.state.assets.concat(s),n.dataSource=this.state.dataSource.cloneWithRows(y(n.assets,this.props.imagesPerRow))),this.setState(n)},_onEndReached:function(){this.state.noMore||this.fetch()}}),T=S.create({row:{flexDirection:'row',flex:1},url:{fontSize:9,marginBottom:14},image:{margin:4},info:{flex:1},container:{flex:1}});m.exports=_},370,[85,161,94,170,371,74]);
-__d(function(g,r,i,a,m,e,d){'use strict';m.exports=function(n,t){for(var u=[],h=[],s=0;s<n.length;++s)s>0&&s%t==0&&(u.push(h),h=[]),h.push(n[s]);if(h.length>0){for(;h.length!==t;)h.push(null);u.push(h)}return u}},371,[]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),o=l.Image,s=l.StyleSheet,n=l.View,c=l.ScrollView,h=(function(l){function s(){var t,l;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,n=new Array(o),c=0;c<o;c++)n[c]=arguments[c];return(l=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(n)))).state={asset:l.props.asset},l}return babelHelpers.inherits(s,l),babelHelpers.createClass(s,[{key:"render",value:function(){var l=this.state.asset.node.image;return t.createElement(c,null,t.createElement(n,{style:b.row},t.createElement(o,{source:l,style:b.imageWide})),t.createElement(n,{style:b.row},t.createElement(o,{source:l,style:b.imageThumb}),t.createElement(o,{source:l,style:b.imageThumb}),t.createElement(o,{source:l,style:b.imageThumb})),t.createElement(n,{style:b.row},t.createElement(o,{source:l,style:b.imageT1}),t.createElement(o,{source:l,style:b.imageT2})))}}]),s})(t.Component),b=s.create({row:{padding:5,flex:1,flexDirection:'row',alignSelf:'center'},textColumn:{flex:1,flexDirection:'column'},imageWide:{borderWidth:1,borderColor:'black',width:320,height:240,margin:5},imageThumb:{borderWidth:1,borderColor:'black',width:100,height:100,margin:5},imageT1:{borderWidth:1,borderColor:'black',width:212,height:320,margin:5},imageT2:{borderWidth:1,borderColor:'black',width:100,height:320,margin:5}});e.title='<AssetScaledImageExample>',e.description='Example component that displays the automatic scaling capabilities of the <Image /> tag',m.exports=h},372,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.Clipboard,o=n.View,s=n.Text,c=(function(n){function c(){var t,n;babelHelpers.classCallCheck(this,c);for(var o=arguments.length,s=new Array(o),p=0;p<o;p++)s[p]=arguments[p];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(c)).call.apply(t,[this].concat(s)))).state={content:'Content will appear here'},n._setClipboardContent=function(){var t;return regeneratorRuntime.async(function(o){for(;;)switch(o.prev=o.next){case 0:return l.setString('Hello World'),o.prev=1,o.next=4,regeneratorRuntime.awrap(l.getString());case 4:t=o.sent,n.setState({content:t}),o.next=11;break;case 8:o.prev=8,o.t0=o.catch(1),n.setState({content:o.t0.message});case 11:case"end":return o.stop()}},null,this,[[1,8]])},n}return babelHelpers.inherits(c,n),babelHelpers.createClass(c,[{key:"render",value:function(){return t.createElement(o,null,t.createElement(s,{onPress:this._setClipboardContent,style:{color:'blue'}},"Tap to put \"Hello World\" in the clipboard"),t.createElement(s,{style:{color:'red',marginTop:20}},this.state.content))}}]),c})(t.Component);e.title='Clipboard',e.description='Show Clipboard contents.',e.examples=[{title:'Clipboard.setString() and getString()',render:function(){return t.createElement(c,null)}}]},373,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.DatePickerAndroid,l=s.StyleSheet,c=s.Text,o=s.TouchableWithoutFeedback,h=r(d[2]),p=r(d[3]),x=(function(s){function l(){var t,s;babelHelpers.classCallCheck(this,l);for(var c=arguments.length,o=new Array(c),h=0;h<c;h++)o[h]=arguments[h];return(s=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(o)))).state={presetDate:new Date(2020,4,5),simpleDate:new Date(2020,4,5),spinnerDate:new Date(2020,4,5),calendarDate:new Date(2020,4,5),defaultDate:new Date(2020,4,5),allDate:new Date(2020,4,5),simpleText:'pick a date',spinnerText:'pick a date',calendarText:'pick a date',defaultText:'pick a date',minText:'pick a date, no earlier than today',maxText:'pick a date, no later than today',presetText:'pick a date, preset to 2020/5/5',allText:'pick a date between 2020/5/1 and 2020/5/10'},s.showPicker=function(t,l){var c,o,h,p,x,D,k;return regeneratorRuntime.async(function(w){for(;;)switch(w.prev=w.next){case 0:return w.prev=0,c={},w.next=4,regeneratorRuntime.awrap(n.open(l));case 4:o=w.sent,h=o.action,p=o.year,x=o.month,D=o.day,h===n.dismissedAction?c[t+'Text']='dismissed':(k=new Date(p,x,D),c[t+'Text']=k.toLocaleDateString(),c[t+'Date']=k),s.setState(c),w.next=16;break;case 13:w.prev=13,w.t0=w.catch(0),console.warn("Error in example '"+t+"': ",w.t0.message);case 16:case"end":return w.stop()}},null,this,[[0,13]])},s}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(p,{title:"DatePickerAndroid"},t.createElement(h,{title:"Simple date picker"},t.createElement(o,{onPress:this.showPicker.bind(this,'simple',{date:this.state.simpleDate})},t.createElement(c,{style:D.text},this.state.simpleText))),t.createElement(h,{title:"Simple spinner date picker"},t.createElement(o,{onPress:this.showPicker.bind(this,'spinner',{date:this.state.spinnerDate,mode:'spinner'})},t.createElement(c,{style:D.text},this.state.spinnerText))),t.createElement(h,{title:"Simple calendar date picker"},t.createElement(o,{onPress:this.showPicker.bind(this,'calendar',{date:this.state.calendarDate,mode:'calendar'})},t.createElement(c,{style:D.text},this.state.calendarText))),t.createElement(h,{title:"Simple default date picker"},t.createElement(o,{onPress:this.showPicker.bind(this,'default',{date:this.state.defaultDate,mode:'default'})},t.createElement(c,{style:D.text},this.state.defaultText))),t.createElement(h,{title:"Date picker with pre-set date"},t.createElement(o,{onPress:this.showPicker.bind(this,'preset',{date:this.state.presetDate})},t.createElement(c,{style:D.text},this.state.presetText))),t.createElement(h,{title:"Date picker with minDate"},t.createElement(o,{onPress:this.showPicker.bind(this,'min',{date:this.state.minDate,minDate:new Date})},t.createElement(c,{style:D.text},this.state.minText))),t.createElement(h,{title:"Date picker with maxDate"},t.createElement(o,{onPress:this.showPicker.bind(this,'max',{date:this.state.maxDate,maxDate:new Date})},t.createElement(c,{style:D.text},this.state.maxText))),t.createElement(h,{title:"Date picker with all options"},t.createElement(o,{onPress:this.showPicker.bind(this,'all',{date:this.state.allDate,minDate:new Date(2020,4,1),maxDate:new Date(2020,4,10)})},t.createElement(c,{style:D.text},this.state.allText))))}}]),l})(t.Component);x.title='DatePickerAndroid',x.description='Standard Android date picker dialog';var D=l.create({text:{color:'black'}});m.exports=x},374,[85,170,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),s=t.Dimensions,l=t.Text,o=t.View,c=(function(t){function c(){var n,t;babelHelpers.classCallCheck(this,c);for(var l=arguments.length,o=new Array(l),u=0;u<l;u++)o[u]=arguments[u];return(t=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(c)).call.apply(n,[this].concat(o)))).state={dims:s.get(t.props.dim)},t._handleDimensionsChange=function(n){t.setState({dims:n[t.props.dim]})},t}return babelHelpers.inherits(c,t),babelHelpers.createClass(c,[{key:"componentDidMount",value:function(){s.addEventListener('change',this._handleDimensionsChange)}},{key:"componentWillUnmount",value:function(){s.removeEventListener('change',this._handleDimensionsChange)}},{key:"render",value:function(){return n.createElement(o,null,n.createElement(l,null,JSON.stringify(this.state.dims)))}}]),c})(n.Component);e.title='Dimensions',e.description='Dimensions of the viewport',e.examples=[{title:'window',render:function(){return n.createElement(c,{dim:"window"})}},{title:'screen',render:function(){return n.createElement(c,{dim:"screen"})}}]},375,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=n.StyleSheet,l=n.Text,s=n.View;e.framework='React',e.title='Geolocation',e.description='Examples of using the Geolocation API.',e.examples=[{title:'navigator.geolocation',render:function(){return t.createElement(c,null)}}];var c=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var l=arguments.length,s=new Array(l),c=0;c<l;c++)s[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(s)))).state={initialPosition:'unknown',lastPosition:'unknown'},n.watchID=null,n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"componentDidMount",value:function(){var t=this;navigator.geolocation.getCurrentPosition(function(n){var o=JSON.stringify(n);t.setState({initialPosition:o})},function(t){return alert(JSON.stringify(t))},{enableHighAccuracy:!0,timeout:2e4,maximumAge:1e3}),this.watchID=navigator.geolocation.watchPosition(function(n){var o=JSON.stringify(n);t.setState({lastPosition:o})})}},{key:"componentWillUnmount",value:function(){null!=this.watchID&&navigator.geolocation.clearWatch(this.watchID)}},{key:"render",value:function(){return t.createElement(s,null,t.createElement(l,null,t.createElement(l,{style:u.title},"Initial position: "),this.state.initialPosition),t.createElement(l,null,t.createElement(l,{style:u.title},"Current position: "),this.state.lastPosition))}}]),o})(t.Component),u=o.create({title:{fontWeight:'500'}})},376,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),s=o.CameraRoll,n=o.Image,h=o.ImageEditor,l=(o.Platform,o.ScrollView),c=o.StyleSheet,p=o.Text,u=o.TouchableHighlight,f=o.View,_=(function(o){function l(t){var o;return babelHelpers.classCallCheck(this,l),(o=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).call(this,t)))._isMounted=!0,o.state={randomPhoto:null,measuredSize:null,croppedImageURI:null,cropError:null},o._fetchRandomPhoto(),o}return babelHelpers.inherits(l,o),babelHelpers.createClass(l,[{key:"_fetchRandomPhoto",value:function(){var t,o,n,h;return regeneratorRuntime.async(function(l){for(;;)switch(l.prev=l.next){case 0:return l.prev=0,l.next=3,regeneratorRuntime.awrap(s.getPhotos({first:20}));case 3:if(t=l.sent,this._isMounted){l.next=6;break}return l.abrupt("return");case 6:o=t.edges,n=o[Math.floor(Math.random()*o.length)],(h=n&&n.node&&n.node.image)&&this.setState({randomPhoto:h}),l.next=15;break;case 12:l.prev=12,l.t0=l.catch(0),console.warn("Can't get a photo from camera roll",l.t0);case 15:case"end":return l.stop()}},null,this,[[0,12]])}},{key:"componentWillUnmount",value:function(){this._isMounted=!1}},{key:"render",value:function(){var o=this;return this.state.measuredSize?this.state.croppedImageURI?this._renderCroppedImage():this._renderImageCropper():t.createElement(f,{style:y.container,onLayout:function(t){var s=t.nativeEvent.layout.width;s&&o.setState({measuredSize:{width:s,height:s}})}})}},{key:"_renderImageCropper",value:function(){var o=this;if(!this.state.randomPhoto)return t.createElement(f,{style:y.container});var s=null;return this.state.cropError&&(s=t.createElement(p,null,this.state.cropError.message)),t.createElement(f,{style:y.container},t.createElement(p,null,"Drag the image within the square to crop:"),t.createElement(S,{image:this.state.randomPhoto,size:this.state.measuredSize,style:[y.imageCropper,this.state.measuredSize],onTransformDataChange:function(t){return o._transformData=t}}),t.createElement(u,{style:y.cropButtonTouchable,onPress:this._crop.bind(this)},t.createElement(f,{style:y.cropButton},t.createElement(p,{style:y.cropButtonLabel},"Crop"))),s)}},{key:"_renderCroppedImage",value:function(){return t.createElement(f,{style:y.container},t.createElement(p,null,"Here is the cropped image:"),t.createElement(n,{source:{uri:this.state.croppedImageURI},style:[y.imageCropper,this.state.measuredSize]}),t.createElement(u,{style:y.cropButtonTouchable,onPress:this._reset.bind(this)},t.createElement(f,{style:y.cropButton},t.createElement(p,{style:y.cropButtonLabel},"Try again"))))}},{key:"_crop",value:function(){var t=this;h.cropImage(this.state.randomPhoto.uri,this._transformData,function(o){return t.setState({croppedImageURI:o})},function(o){return t.setState({cropError:o})})}},{key:"_reset",value:function(){this.setState({randomPhoto:null,croppedImageURI:null,cropError:null}),this._fetchRandomPhoto()}}]),l})(t.Component),S=(function(o){function s(){return babelHelpers.classCallCheck(this,s),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(s).apply(this,arguments))}return babelHelpers.inherits(s,o),babelHelpers.createClass(s,[{key:"componentWillMount",value:function(){var t=this.props.image.width/this.props.size.width,o=this.props.image.height/this.props.size.height;this._horizontal=t>o,this._horizontal?this._scaledImageSize={width:this.props.image.width/o,height:this.props.size.height}:(this._scaledImageSize={width:this.props.size.width,height:this.props.image.height/t},this._scaledImageSize.width*=2,this._scaledImageSize.height*=2,this._horizontal=!0),this._contentOffset={x:(this._scaledImageSize.width-this.props.size.width)/2,y:(this._scaledImageSize.height-this.props.size.height)/2},this._maximumZoomScale=Math.min(this.props.image.width/this._scaledImageSize.width,this.props.image.height/this._scaledImageSize.height),this._minimumZoomScale=Math.max(this.props.size.width/this._scaledImageSize.width,this.props.size.height/this._scaledImageSize.height),this._updateTransformData(this._contentOffset,this._scaledImageSize,this.props.size)}},{key:"_onScroll",value:function(t){this._updateTransformData(t.nativeEvent.contentOffset,t.nativeEvent.contentSize,t.nativeEvent.layoutMeasurement)}},{key:"_updateTransformData",value:function(t,o,s){var n=t.x/o.width,h=t.y/o.height,l=s.width/o.width,c=s.height/o.height,p={offset:{x:this.props.image.width*n,y:this.props.image.height*h},size:{width:this.props.image.width*l,height:this.props.image.height*c}};this.props.onTransformDataChange&&this.props.onTransformDataChange(p)}},{key:"render",value:function(){return t.createElement(l,{alwaysBounceVertical:!0,automaticallyAdjustContentInsets:!1,contentOffset:this._contentOffset,decelerationRate:"fast",horizontal:this._horizontal,maximumZoomScale:this._maximumZoomScale,minimumZoomScale:this._minimumZoomScale,onMomentumScrollEnd:this._onScroll.bind(this),onScrollEndDrag:this._onScroll.bind(this),showsHorizontalScrollIndicator:!1,showsVerticalScrollIndicator:!1,style:this.props.style,scrollEventThrottle:16},t.createElement(n,{source:this.props.image,style:this._scaledImageSize}))}}]),s})(t.Component);e.framework='React',e.title='ImageEditor',e.description='Cropping and scaling with ImageEditor',e.examples=[{title:'Image Cropping',render:function(){return t.createElement(_,null)}}];var y=c.create({container:{flex:1,alignSelf:'stretch'},imageCropper:{alignSelf:'center',marginTop:12},cropButtonTouchable:{alignSelf:'center',marginTop:12},cropButton:{padding:12,backgroundColor:'blue',borderRadius:4},cropButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}})},377,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=(r(d[2]),n.Image),l=n.LayoutAnimation,s=n.StyleSheet,u=n.Text,c=n.View,y=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,u=new Array(o),c=0;c<o;c++)u[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(u)))).state={viewStyle:{margin:20}},n.animateViewLayout=function(){l.configureNext(l.Presets.spring,function(){console.log('layout animation done.'),n.addWrapText()}),n.setState({viewStyle:{margin:n.state.viewStyle.margin>20?20:60}})},n.addWrapText=function(){n.setState({extraText:'  And a bunch more text to wrap around a few lines.'},n.changeContainer)},n.changeContainer=function(){n.setState({containerStyle:{width:280}})},n.onViewLayout=function(t){console.log('received view layout event\n',t.nativeEvent),n.setState({viewLayout:t.nativeEvent.layout})},n.onTextLayout=function(t){console.log('received text layout event\n',t.nativeEvent),n.setState({textLayout:t.nativeEvent.layout})},n.onImageLayout=function(t){console.log('received image layout event\n',t.nativeEvent),n.setState({imageLayout:t.nativeEvent.layout})},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){var n=[h.view,this.state.viewStyle],l=this.state.textLayout||{width:'?',height:'?'},s=this.state.imageLayout||{x:'?',y:'?'};return t.createElement(c,{style:this.state.containerStyle},t.createElement(u,null,"layout events are called on mount and whenever layout is recalculated. Note that the layout event will typically be received",' ',t.createElement(u,{style:h.italicText},"before")," the layout has updated on screen, especially when using layout animations.",'  ',t.createElement(u,{style:h.pressText,onPress:this.animateViewLayout},"Press here to change layout.")),t.createElement(c,{ref:"view",onLayout:this.onViewLayout,style:n},t.createElement(o,{ref:"img",onLayout:this.onImageLayout,style:h.image,source:{uri:'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851561_767334496626293_1958532586_n.png'}}),t.createElement(u,null,"ViewLayout:",' ',JSON.stringify(this.state.viewLayout,null,'  ')+'\n\n'),t.createElement(u,{ref:"txt",onLayout:this.onTextLayout,style:h.text},"A simple piece of text.",this.state.extraText),t.createElement(u,null,'\n',"Text w/h: ",l.width,"/",l.height+'\n',"Image x/y: ",s.x,"/",s.y)))}}]),s})(t.Component),h=s.create({view:{padding:12,borderColor:'black',borderWidth:.5,backgroundColor:'transparent'},text:{alignSelf:'flex-start',borderColor:'rgba(0, 0, 255, 0.2)',borderWidth:.5},image:{width:50,height:50,marginBottom:10,alignSelf:'center'},pressText:{fontWeight:'bold'},italicText:{fontStyle:'italic'}});e.title='Layout Events',e.description="Examples that show how Layout events can be used to measure view size and position.",e.examples=[{title:'LayoutEventExample',render:function(){return t.createElement(y,null)}}]},378,[85,170,43]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=(r(d[3]),l.Linking),s=l.StyleSheet,c=l.Text,p=l.TouchableOpacity,u=l.View,b=r(d[4]),h=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var s=arguments.length,c=new Array(s),p=0;p<s;p++)c[p]=arguments[p];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(c)))).handleClick=function(){o.canOpenURL(n.props.url).then(function(t){t?o.openURL(n.props.url):console.log("Don't know how to open URI: "+n.props.url)})},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(p,{onPress:this.handleClick},t.createElement(u,{style:k.button},t.createElement(c,{style:k.text},"Open ",this.props.url)))}}]),l})(t.Component);h.propTypes={url:n.string};var f=(function(n){function l(){return babelHelpers.classCallCheck(this,l),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).apply(this,arguments))}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(b,{title:"Open external URLs"},t.createElement(h,{url:'https://www.facebook.com'}),t.createElement(h,{url:'http://www.facebook.com'}),t.createElement(h,{url:'http://facebook.com'}),t.createElement(h,{url:'fb://notifications'}),t.createElement(h,{url:'geo:37.484847,-122.148386'}),t.createElement(h,{url:'tel:9876543210'}))}}]),l})(t.Component);f.title='Linking',f.description='Shows how to use Linking to open URLs.';var k=s.create({container:{flex:1,backgroundColor:'white',padding:10,paddingTop:30},button:{padding:10,backgroundColor:'#3B5998',marginBottom:10},text:{color:'white'}});m.exports=f},379,[85,94,170,43,302]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.LayoutAnimation,o=n.StyleSheet,s=n.Text,u=n.View,c=n.TouchableOpacity,b=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var l=arguments.length,s=new Array(l),u=0;u<l;u++)s[u]=arguments[u];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(s)))).state={views:[]},n._onPressAddView=function(){n.setState(function(t){return{views:[].concat(babelHelpers.toConsumableArray(t.views),[{}])}})},n._onPressRemoveView=function(){n.setState(function(t){return{views:t.views.slice(0,-1)}})},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"UNSAFE_componentWillUpdate",value:function(){l.easeInEaseOut()}},{key:"render",value:function(){var n=this.state.views.map(function(n,l){return t.createElement(u,{key:l,style:v.view},t.createElement(s,null,l))});return t.createElement(u,{style:v.container},t.createElement(c,{onPress:this._onPressAddView},t.createElement(u,{style:v.button},t.createElement(s,null,"Add view"))),t.createElement(c,{onPress:this._onPressRemoveView},t.createElement(u,{style:v.button},t.createElement(s,null,"Remove view"))),t.createElement(u,{style:v.viewContainer},n))}}]),o})(t.Component),h=function(){return t.createElement(u,{style:v.greenSquare},t.createElement(s,null,"Green square"))},p=function(){return t.createElement(u,{style:v.blueSquare},t.createElement(s,null,"Blue square"))},f=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,u=new Array(s),c=0;c<s;c++)u[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(u)))).state={toggled:!1},n._onPressToggle=function(){l.easeInEaseOut(),n.setState(function(t){return{toggled:!t.toggled}})},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"render",value:function(){return t.createElement(u,{style:v.container},t.createElement(c,{onPress:this._onPressToggle},t.createElement(u,{style:v.button},t.createElement(s,null,"Toggle"))),t.createElement(u,{style:v.viewContainer},this.state.toggled?t.createElement(h,null):t.createElement(p,null)))}}]),o})(t.Component),y=(function(n){function o(){var t,n;babelHelpers.classCallCheck(this,o);for(var s=arguments.length,u=new Array(s),c=0;c<s;c++)u[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(o)).call.apply(t,[this].concat(u)))).state={width:200,height:100},n.timeout=null,n._clearTimeout=function(){null!==n.timeout&&(clearTimeout(n.timeout),n.timeout=null)},n._onPressToggle=function(){n._clearTimeout(),n.setState({width:150}),l.configureNext({duration:1e3,update:{type:l.Types.linear}}),n.timeout=setTimeout(function(){return n.setState({width:100})},500)},n}return babelHelpers.inherits(o,n),babelHelpers.createClass(o,[{key:"componentWillUnmount",value:function(){this._clearTimeout()}},{key:"render",value:function(){var n=this.state,l=n.width,o=n.height;return t.createElement(u,{style:v.container},t.createElement(c,{onPress:this._onPressToggle},t.createElement(u,{style:v.button},t.createElement(s,null,"Make box square"))),t.createElement(u,{style:[v.view,{width:l,height:o}]},t.createElement(s,null,l,"x",o)))}}]),o})(t.Component),v=o.create({container:{flex:1},button:{borderRadius:5,backgroundColor:'#eeeeee',padding:10,marginBottom:10},buttonText:{fontSize:16},viewContainer:{flex:1,flexDirection:'row',flexWrap:'wrap'},view:{height:54,width:54,backgroundColor:'red',margin:8,alignItems:'center',justifyContent:'center'},greenSquare:{width:150,height:150,backgroundColor:'green',alignItems:'center',justifyContent:'center'},blueSquare:{width:150,height:150,backgroundColor:'blue',alignItems:'center',justifyContent:'center'}});e.title='Layout Animation',e.description='Layout animation',e.examples=[{title:'Add and remove views',render:function(){return t.createElement(b,null)}},{title:'Cross fade views',render:function(){return t.createElement(f,null)}},{title:'Layout update during animation',render:function(){return t.createElement(y,null)}}]},380,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),n=l.StyleSheet,s=l.Text,c=l.View,o=r(d[2]),E=r(d[3]),u=(function(l){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,l),babelHelpers.createClass(n,[{key:"render",value:function(){var l=this.props.size||20,n=this.props.bgColor||'#527fe4';return t.createElement(c,{style:{borderRadius:l/2,backgroundColor:n,width:l,height:l,margin:1}})}}]),n})(t.Component),p=(function(l){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,l),babelHelpers.createClass(n,[{key:"render",value:function(){return t.createElement(c,{style:[{flexDirection:'row',backgroundColor:'#f6f7f8',borderWidth:.5,borderColor:'#d6d7da',marginBottom:2},this.props.style]},this.props.children)}}]),n})(t.Component),b=(function(l){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,l),babelHelpers.createClass(n,[{key:"render",value:function(){var l=[t.createElement(u,{bgColor:"#527fe4",key:"blue"}),t.createElement(u,{bgColor:"#D443E3",key:"violet"}),t.createElement(u,{bgColor:"#FF9049",key:"orange"}),t.createElement(u,{bgColor:"#FFE649",key:"yellow"}),t.createElement(u,{bgColor:"#7FE040",key:"green"})];return t.createElement(E,{title:this.props.navigator?null:'Layout'},t.createElement(o,{title:"Flex Direction"},t.createElement(s,null,"row"),t.createElement(p,{style:{flexDirection:'row'}},l),t.createElement(s,null,"row-reverse"),t.createElement(p,{style:{flexDirection:'row-reverse'}},l),t.createElement(s,null,"column"),t.createElement(p,{style:{flexDirection:'column'}},l),t.createElement(s,null,"column-reverse"),t.createElement(p,{style:{flexDirection:'column-reverse'}},l),t.createElement(c,{style:[z.overlay,{position:'absolute',top:15,left:160}]},t.createElement(s,null,'top: 15, left: 160'))),t.createElement(o,{title:"Justify Content - Main Direction"},t.createElement(s,null,"flex-start"),t.createElement(p,{style:{justifyContent:'flex-start'}},l),t.createElement(s,null,"center"),t.createElement(p,{style:{justifyContent:'center'}},l),t.createElement(s,null,"flex-end"),t.createElement(p,{style:{justifyContent:'flex-end'}},l),t.createElement(s,null,"space-between"),t.createElement(p,{style:{justifyContent:'space-between'}},l),t.createElement(s,null,"space-around"),t.createElement(p,{style:{justifyContent:'space-around'}},l)),t.createElement(o,{title:"Align Items - Other Direction"},t.createElement(s,null,"flex-start"),t.createElement(p,{style:{alignItems:'flex-start',height:30}},t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:8})),t.createElement(s,null,"center"),t.createElement(p,{style:{alignItems:'center',height:30}},t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:8})),t.createElement(s,null,"flex-end"),t.createElement(p,{style:{alignItems:'flex-end',height:30}},t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:10}),t.createElement(u,{size:20}),t.createElement(u,{size:17}),t.createElement(u,{size:12}),t.createElement(u,{size:15}),t.createElement(u,{size:8}))),t.createElement(o,{title:"Flex Wrap"},t.createElement(p,{style:{flexWrap:'wrap'}},'oooooooooooooooo'.split('').map(function(l,n){return t.createElement(u,{key:n})}))))}}]),n})(t.Component);b.title='Layout - Flexbox',b.description='Examples of using the flexbox API to layout views.',b.displayName='LayoutExample';var z=n.create({overlay:{backgroundColor:'#aaccff',borderRadius:10,borderWidth:.5,opacity:.5,padding:5}});m.exports=b},381,[85,170,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.View,o=n.Text,s=n.Animated,u=n.StyleSheet,c=n.TouchableWithoutFeedback,p=n.Slider,b=s.createAnimatedComponent(p),f=(function(n){function u(){var t,n;babelHelpers.classCallCheck(this,u);for(var l=arguments.length,o=new Array(l),c=0;c<l;c++)o[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(u)).call.apply(t,[this].concat(o)))).state={native:new s.Value(0),js:new s.Value(0)},n.current=0,n.onPress=function(){var t=n.current&&n.props.reverseConfig?n.props.reverseConfig:n.props.config;n.current=n.current?0:1;var l=babelHelpers.objectSpread({},t,{toValue:n.current});s[n.props.type](n.state.native,babelHelpers.objectSpread({},l,{useNativeDriver:!0})).start(),s[n.props.type](n.state.js,babelHelpers.objectSpread({},l,{useNativeDriver:!1})).start()},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"render",value:function(){return t.createElement(c,{onPress:this.onPress},t.createElement(l,null,t.createElement(l,null,t.createElement(o,null,"Native:")),t.createElement(l,{style:k.row},this.props.children(this.state.native)),t.createElement(l,null,t.createElement(o,null,"JavaScript:")),t.createElement(l,{style:k.row},this.props.children(this.state.js))))}}]),u})(t.Component),y=(function(n){function u(){var t,n;babelHelpers.classCallCheck(this,u);for(var l=arguments.length,o=new Array(l),c=0;c<l;c++)o[c]=arguments[c];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(u)).call.apply(t,[this].concat(o)))).state={anim:new s.Value(0),progress:0},n._current=0,n._onPress=function(){n._current=n._current?0:1;var t={duration:1e3,toValue:n._current};s.timing(n.state.anim,babelHelpers.objectSpread({},t,{useNativeDriver:!0})).start()},n}return babelHelpers.inherits(u,n),babelHelpers.createClass(u,[{key:"componentDidMount",value:function(){var t=this;this.state.anim.addListener(function(n){return 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t.createElement(l,null,t.createElement(s.View,{style:[k.block,{opacity:n}]}),t.createElement(s.ScrollView,{horizontal:!0,style:{height:100,marginTop:16},scrollEventThrottle:16,onScroll:s.event([{nativeEvent:{contentOffset:{x:this.state.scrollX}}}],{useNativeDriver:!0})},t.createElement(l,{style:{width:600,backgroundColor:'#eee',justifyContent:'center'}},t.createElement(o,null,"Scroll me!"))))}}]),u})(t.Component),R=(function(n){function u(){var n,l;babelHelpers.classCallCheck(this,u);for(var o=arguments.length,c=new Array(o),p=0;p<o;p++)c[p]=arguments[p];return(l=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(u)).call.apply(n,[this].concat(c)))).state={native:new s.Value(0),toNative:new s.Value(0),js:new s.Value(0),toJS:new s.Value(0)},l.onPress=function(){var 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t.createElement(c,{onPress:this.onPress},t.createElement(l,null,t.createElement(l,null,t.createElement(o,null,"Native:")),t.createElement(l,{style:k.row},this.renderBlock(this.state.native,this.state.toNative)),t.createElement(l,null,t.createElement(o,null,"JavaScript:")),t.createElement(l,{style:k.row},this.renderBlock(this.state.js,this.state.toJS))))}}]),u})(t.Component),k=u.create({row:{padding:10,zIndex:1},block:{width:50,height:50,backgroundColor:'blue'},line:{position:'absolute',left:35,top:0,bottom:0,width:1,backgroundColor:'red'}});e.framework='React',e.title='Native Animated Example',e.description='Test out Native Animations',e.examples=[{title:'Multistage With Multiply and rotation',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:n.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})},{rotate:n.interpolate({inputRange:[0,.5,1],outputRange:['0deg','90deg','0deg']})}],opacity:s.multiply(n.interpolate({inputRange:[0,1],outputRange:[1,0]}),n.interpolate({inputRange:[0,1],outputRange:[.25,1]}))}]})})}},{title:'Multistage With Multiply',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:n.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})}],opacity:s.multiply(n.interpolate({inputRange:[0,1],outputRange:[1,0]}),n.interpolate({inputRange:[0,1],outputRange:[.25,1]}))}]})})}},{title:'Multistage With Subtract',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:n.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})}],opacity:s.subtract(n.interpolate({inputRange:[0,1],outputRange:[1,1]}),n.interpolate({inputRange:[0,.5,1],outputRange:[0,.5,0]}))}]})})}},{title:'Scale interpolation with clamping',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{scale:n.interpolate({inputRange:[0,.5],outputRange:[1,1.4],extrapolateRight:'clamp'})}]}]})})}},{title:'Opacity with delay',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3,delay:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{opacity:n}]})})}},{title:'Rotate interpolation',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{rotate:n.interpolate({inputRange:[0,1],outputRange:['0deg','90deg']})}]}]})})}},{title:'translateX => Animated.spring (bounciness/speed)',render:function(){return t.createElement(f,{type:"spring",config:{bounciness:0}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n.interpolate({inputRange:[0,1],outputRange:[0,100]})}]}]})})}},{title:'translateX => Animated.spring (stiffness/damping/mass)',render:function(){return t.createElement(f,{type:"spring",config:{stiffness:1e3,damping:500,mass:3}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n.interpolate({inputRange:[0,1],outputRange:[0,100]})}]}]})})}},{title:'translateX => Animated.decay',render:function(){return t.createElement(f,{type:"decay",config:{velocity:.5},reverseConfig:{velocity:-.5}},function(n){return t.createElement(s.View,{style:[k.block,{transform:[{translateX:n}]}]})})}},{title:'Drive custom property',render:function(){return t.createElement(f,{type:"timing",config:{duration:1e3}},function(n){return t.createElement(b,{style:{},value:n})})}},{title:'Animated value listener',render:function(){return t.createElement(y,null)}},{title:'Animated loop',render:function(){return t.createElement(h,null)}},{title:'Animated events',render:function(){return t.createElement(w,null)}},{title:'Animated Tracking - tap me many times',render:function(){return t.createElement(R,null)}},{title:'Internal Settings',render:function(){return t.createElement(E,null)}}]},382,[85,170,383,384]);
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Check them out to see what they look like in RTL layout.")},l._linearTap=function(t,n){l.setState({toggleStatus:babelHelpers.objectSpread({},l.state.toggleStatus,babelHelpers.defineProperty({},t,!l.state.toggleStatus[t]))});var s=w[0]/L/2+10,c=(C?-1:1)*(l.state.windowWidth/2-s);o.timing(l.state.linear,{toValue:l.state.toggleStatus[t]?c:0,duration:2e3,useNativeDriver:!0}).start()},l._onPanResponderGrant=function(t,n){l.state.pan.stopAnimation(function(t){l.state.pan.setOffset(t)})},l._onPanResponderEnd=function(t,n){l.state.pan.flattenOffset(),o.sequence([o.decay(l.state.pan,{velocity:{x:n.vx,y:n.vy},deceleration:.995}),o.spring(l.state.pan,{toValue:{x:0,y:0}})]).start()};var c=new o.ValueXY;return l._panResponder=u.create({onStartShouldSetPanResponder:function(){return!0},onPanResponderGrant:l._onPanResponderGrant,onPanResponderMove:o.event([null,{dx:c.x,dy:c.y}]),onPanResponderRelease:l._onPanResponderEnd,onPanResponderTerminate:l._onPanResponderEnd}),l.state={toggleStatus:{},pan:c,linear:new o.Value(0),isRTL:C,windowWidth:0},l}return babelHelpers.inherits(E,l),babelHelpers.createClass(E,[{key:"render",value:function(){return t.createElement(h,{style:[U.container,null],onLayout:this._onLayout},t.createElement(S,{title:'Right-to-Left (RTL) UI Layout'},t.createElement(T,{title:'Current Layout Direction'},t.createElement(f,{style:U.directionBox},t.createElement(y,{style:U.directionText},this.state.isRTL?'Right-to-Left':'Left-to-Right'))),t.createElement(T,{title:'Quickly Test RTL Layout'},t.createElement(f,{style:U.flexDirectionRow},t.createElement(y,{style:U.switchRowTextView},"forceRTL"),t.createElement(f,{style:U.switchRowSwitchView},t.createElement(p,{onValueChange:this._onDirectionChange,style:U.rightAlignStyle,value:this.state.isRTL})))),t.createElement(T,{title:'A Simple List Item Layout'},t.createElement(f,{style:U.list},t.createElement(W,{imageSource:r(d[6])}),t.createElement(W,{imageSource:r(d[5])}))),t.createElement(v,{title:'Default Text Alignment',description:"In iOS/macOS, it depends on active language. In Android, it depends on the text content.",style:U.fontSizeSmall}),t.createElement(v,{title:"Using textAlign: 'left'",description:"In iOS/macOS/Android, text alignment flips regardless of languages or text content.",style:[U.fontSizeSmall,U.textAlignLeft]}),t.createElement(v,{title:"Using textAlign: 'right'",description:"In iOS/macOS/Android, text alignment flips regardless of languages or text content.",style:[U.fontSizeSmall,U.textAlignRight]}),t.createElement(T,{title:'Working With Icons'},t.createElement(f,{style:U.flexDirectionRow},t.createElement(f,null,t.createElement(c,{source:r(d[6]),style:U.image}),t.createElement(y,{style:U.fontSizeExtraSmall},"Without directional meaning")),t.createElement(f,{style:U.rightAlignStyle},t.createElement(c,{source:r(d[5]),style:[U.image,U.withRTLStyle]}),t.createElement(y,{style:U.fontSizeExtraSmall},"With directional meaning")))),t.createElement(T,{title:'Controlling Animation',description:'Animation direction according to layout'},t.createElement(f,{style:U.view},t.createElement(A,{onPress:this._linearTap,imgStyle:{transform:[{translateX:this.state.linear},{scaleX:C?-1:1}]}}))),t.createElement(P,null),t.createElement(D,null),t.createElement(_,null),t.createElement(I,null),t.createElement(H,null),t.createElement(z,null),t.createElement(V,null)))}}]),E})(t.Component);O.title='RTLExample',O.description='Examples to show how to apply components to RTL layout.';var U=b.create({container:{backgroundColor:'#e9eaed',paddingTop:15},directionBox:{flex:1,backgroundColor:'#f8f8f8',borderWidth:.5,borderColor:'black'},directionText:{padding:10,fontSize:16,textAlign:'center',fontWeight:'bold'},switchRowTextView:{flex:1,marginBottom:5,marginTop:5,textAlign:'center'},switchRowSwitchView:{flex:3},rightAlignStyle:{right:10,position:'absolute'},list:{height:120,marginBottom:5,borderTopWidth:.5,borderLeftWidth:.5,borderRightWidth:.5,borderColor:'#e5e5e5'},row:{height:60,flexDirection:'row',borderBottomWidth:.5,borderColor:'#e5e5e5'},column1:{width:60},column2:{flex:2.5,padding:6},column3:{flex:1.5},icon:{width:48,height:48,margin:6,borderWidth:.5,borderColor:'#e5e5e5'},withRTLStyle:{transform:[{scaleX:C?-1:1}]},image:{left:30,width:48,height:48},img:{width:w[0]/L,height:w[1]/L},view:{flex:1},block:{padding:10,alignItems:'center'},smallButton:{top:18,borderRadius:5,height:24,width:64,backgroundColor:'#e5e5e5',justifyContent:'center',alignItems:'center'},fontSizeSmall:{fontSize:10},fontSizeExtraSmall:{fontSize:8},textAlignLeft:{textAlign:'left'},textAlignRight:{textAlign:'right'},textBox:{width:28},flexDirectionRow:{flexDirection:'row'},bold:{fontWeight:'bold'},rtlToggler:{color:'gray',padding:8,textAlign:'center',fontWeight:'500'}});m.exports=O},390,[85,170,43,303,302,322,313]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),l=s.StyleSheet,n=s.View,h=s.Text,o=s.TouchableHighlight,c=s.Share;e.framework='React',e.title='Share',e.description='Share data with other Apps.',e.examples=[{title:'Share Text Content',render:function(){return t.createElement(u,null)}}];var u=(function(s){function l(t){var s;return babelHelpers.classCallCheck(this,l),(s=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(l).call(this,t)))._shareMessage=s._shareMessage.bind(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(s))),s._shareText=s._shareText.bind(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(s))),s._showResult=s._showResult.bind(babelHelpers.assertThisInitialized(babelHelpers.assertThisInitialized(s))),s.state={result:''},s}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"render",value:function(){return t.createElement(n,null,t.createElement(o,{style:b.wrapper,onPress:this._shareMessage},t.createElement(n,{style:b.button},t.createElement(h,null,"Click to share message"))),t.createElement(o,{style:b.wrapper,onPress:this._shareText},t.createElement(n,{style:b.button},t.createElement(h,null,"Click to share message, URL and title"))),t.createElement(h,null,this.state.result))}},{key:"_shareMessage",value:function(){var t=this;c.share({message:'React Native | A framework for building native apps using React'}).then(this._showResult).catch(function(s){return t.setState({result:'error: '+s.message})})}},{key:"_shareText",value:function(){var t=this;c.share({message:'A framework for building native apps using React',url:'http://facebook.github.io/react-native/',title:'React Native'},{subject:'A subject to go in the email heading',dialogTitle:'Share React Native website',excludedActivityTypes:['com.apple.UIKit.activity.PostToTwitter'],tintColor:'green'}).then(this._showResult).catch(function(s){return t.setState({result:'error: '+s.message})})}},{key:"_showResult",value:function(t){t.action===c.sharedAction?t.activityType?this.setState({result:'shared with an activityType: '+t.activityType}):this.setState({result:'shared'}):t.action===c.dismissedAction&&this.setState({result:'dismissed'})}}]),l})(t.Component),b=l.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}})},391,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.TimePickerAndroid,c=s.StyleSheet,o=s.Text,l=s.TouchableWithoutFeedback,p=r(d[2]),h=r(d[3]),u=(function(s){function c(){var t,s;babelHelpers.classCallCheck(this,c);for(var o=arguments.length,l=new Array(o),p=0;p<o;p++)l[p]=arguments[p];return(s=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(c)).call.apply(t,[this].concat(l)))).state={isoFormatText:'pick a time (24-hour format)',presetHour:4,presetMinute:4,presetText:'pick a time, default: 4:04AM',simpleText:'pick a time',clockText:'pick a time',spinnerText:'pick a time',defaultText:'pick a time'},s.showPicker=function(t,c){var o,l,p,h,u;return regeneratorRuntime.async(function(x){for(;;)switch(x.prev=x.next){case 0:return x.prev=0,x.next=3,regeneratorRuntime.awrap(n.open(c));case 3:o=x.sent,l=o.action,p=o.minute,h=o.hour,u={},l===n.timeSetAction?(u[t+'Text']=k(h,p),u[t+'Hour']=h,u[t+'Minute']=p):l===n.dismissedAction&&(u[t+'Text']='dismissed'),s.setState(u),x.next=15;break;case 12:x.prev=12,x.t0=x.catch(0),console.warn("Error in example '"+t+"': ",x.t0.message);case 15:case"end":return x.stop()}},null,this,[[0,12]])},s}return babelHelpers.inherits(c,s),babelHelpers.createClass(c,[{key:"render",value:function(){return t.createElement(h,{title:"TimePickerAndroid"},t.createElement(p,{title:"Simple time picker"},t.createElement(l,{onPress:this.showPicker.bind(this,'simple',{})},t.createElement(o,{style:x.text},this.state.simpleText))),t.createElement(p,{title:"Simple clock time picker"},t.createElement(l,{onPress:this.showPicker.bind(this,'clock',{mode:'clock'})},t.createElement(o,{style:x.text},this.state.clockText))),t.createElement(p,{title:"Simple spinner time picker"},t.createElement(l,{onPress:this.showPicker.bind(this,'spinner',{mode:'spinner'})},t.createElement(o,{style:x.text},this.state.spinnerText))),t.createElement(p,{title:"Simple default time picker"},t.createElement(l,{onPress:this.showPicker.bind(this,'default',{mode:'default'})},t.createElement(o,{style:x.text},this.state.defaultText))),t.createElement(p,{title:"Time picker with pre-set time"},t.createElement(l,{onPress:this.showPicker.bind(this,'preset',{hour:this.state.presetHour,minute:this.state.presetMinute})},t.createElement(o,{style:x.text},this.state.presetText))),t.createElement(p,{title:"Time picker with 24-hour time format"},t.createElement(l,{onPress:this.showPicker.bind(this,'isoFormat',{hour:this.state.isoFormatHour,minute:this.state.isoFormatMinute,is24Hour:!0})},t.createElement(o,{style:x.text},this.state.isoFormatText))))}}]),c})(t.Component);function k(t,s){return t+':'+(s<10?'0'+s:s)}u.title='TimePickerAndroid',u.description='Standard Android time picker dialog';var x=c.create({text:{color:'black'}});m.exports=u},392,[85,170,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=(s.AlertIOS,s.AlertMacOS,s.Platform,s.ToastAndroid),o=s.Text,u=s.View,c=r(d[3]),h=r(d[4]),f=r(d[5]);function p(t){for(var n=f();f()<n+t;);}var _=(function(n){function s(){var t,n;babelHelpers.classCallCheck(this,s);for(var l=arguments.length,o=new Array(l),u=0;u<l;u++)o[u]=arguments[u];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(s)).call.apply(t,[this].concat(o)))).state={message:'-'},n._idleTimer=null,n._iters=0,n._run=function(t){cancelIdleCallback(n._idleTimer),n._idleTimer=requestIdleCallback(function(s){var l='';t&&(p(10),l='Burned CPU for 10ms,'),n.setState({message:l+" "+s.timeRemaining()+"ms remaining in frame"})})},n._runWithTimeout=function(){cancelIdleCallback(n._idleTimer),n._idleTimer=requestIdleCallback(function(t){n.setState({message:t.timeRemaining()+"ms remaining in frame, it did timeout: "+(t.didTimeout?'yes':'no')})},{timeout:100}),p(100)},n._runBackground=function(){cancelIdleCallback(n._idleTimer);n._idleTimer=requestIdleCallback(function t(s){for(;s.timeRemaining()>5;)p(5),n.setState({message:"Burned CPU for 5ms "+n._iters+++" times, "+s.timeRemaining()+"ms remaining in frame"});n._idleTimer=requestIdleCallback(t)})},n._stopBackground=function(){n._iters=0,cancelIdleCallback(n._idleTimer)},n}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"componentWillUnmount",value:function(){cancelIdleCallback(this._idleTimer)}},{key:"render",value:function(){return t.createElement(u,null,t.createElement(h,{onPress:this._run.bind(this,!1)},"Run requestIdleCallback"),t.createElement(h,{onPress:this._run.bind(this,!0)},"Burn CPU inside of requestIdleCallback"),t.createElement(h,{onPress:this._runWithTimeout.bind(this)},"Run requestIdleCallback with timeout option"),t.createElement(h,{onPress:this._runBackground},"Run background task"),t.createElement(h,{onPress:this._stopBackground},"Stop background task"),t.createElement(o,null,this.state.message))}}]),s})(t.Component),b=n({displayName:'TimerTester',mixins:[c],_ii:0,_iters:0,_start:0,_timerFn:null,_handle:null,render:function(){var n='fn'+(void 0!==this.props.dt?', '+this.props.dt:'');return t.createElement(h,{onPress:this._run},"Measure: ",this.props.type,"(",n,") - ",this._ii||0)},_run:function(){var t=this;if(!this._start){var n=new Date;this._start=n.getTime(),this._iters=100,this._ii=0,'setTimeout'===this.props.type?(this.props.dt<1?this._iters=5e3:this.props.dt>20&&(this._iters=10),this._timerFn=function(){return t.setTimeout(t._run,t.props.dt)}):'requestAnimationFrame'===this.props.type?this._timerFn=function(){return t.requestAnimationFrame(t._run)}:'setImmediate'===this.props.type?(this._iters=5e3,this._timerFn=function(){return t.setImmediate(t._run)}):'setInterval'===this.props.type&&(this._iters=30,this._timerFn=null,this._handle=this.setInterval(this._run,this.props.dt))}if(this._ii>=this._iters&&!this._handle){var s=(n=new Date).getTime()-this._start,o='Finished '+this._ii+' '+this.props.type+" calls.\nElapsed time: "+s+' ms\n'+s/this._ii+' ms / iter';return console.log(o),l.show(o,l.SHORT),this._start=0,void this.forceUpdate(function(){t._ii=0})}this._ii++,this._ii%(this._iters/5)==0&&this.forceUpdate(),this._timerFn&&this._timerFn()},clear:function(){this.clearInterval(this._handle),this._handle&&(this._handle=null,this._iters=this._ii,this._run())}});e.framework='React',e.title='Timers, TimerMixin',e.description="The TimerMixin provides timer functions for executing code in the future that are safely cleaned up when the component unmounts.",e.examples=[{title:'this.setTimeout(fn, t)',description:"Execute function fn t milliseconds in the future.  If t === 0, it will be enqueued immediately in the next event loop.  Larger values will fire on the closest frame.",render:function(){return t.createElement(u,null,t.createElement(b,{type:"setTimeout",dt:0}),t.createElement(b,{type:"setTimeout",dt:1}),t.createElement(b,{type:"setTimeout",dt:100}))}},{title:'this.requestAnimationFrame(fn)',description:'Execute function fn on the next frame.',render:function(){return t.createElement(u,null,t.createElement(b,{type:"requestAnimationFrame"}))}},{title:'this.requestIdleCallback(fn)',description:'Execute function fn on the next JS frame that has idle time',render:function(){return t.createElement(u,null,t.createElement(_,null))}},{title:'this.setImmediate(fn)',description:'Execute function fn at the end of the current JS event loop.',render:function(){return t.createElement(u,null,t.createElement(b,{type:"setImmediate"}))}},{title:'this.setInterval(fn, t)',description:"Execute function fn every t milliseconds until cancelled or component is unmounted.",render:function(){var n=(function(n){function s(){var n,l;babelHelpers.classCallCheck(this,s);for(var o=arguments.length,c=new Array(o),f=0;f<o;f++)c[f]=arguments[f];return(l=babelHelpers.possibleConstructorReturn(this,(n=babelHelpers.getPrototypeOf(s)).call.apply(n,[this].concat(c)))).state={showTimer:!0},l._renderTimer=function(){return t.createElement(u,null,t.createElement(b,{ref:"interval",dt:25,type:"setInterval"}),t.createElement(h,{onPress:function(){return l.refs.interval.clear()}},"Clear interval"))},l._toggleTimer=function(){l.setState({showTimer:!l.state.showTimer})},l}return babelHelpers.inherits(s,n),babelHelpers.createClass(s,[{key:"render",value:function(){return t.createElement(u,null,this.state.showTimer&&this._renderTimer(),t.createElement(h,{onPress:this._toggleTimer},this.state.showTimer?'Unmount timer':'Mount new timer'))}}]),s})(t.Component);return t.createElement(n,null)}}]},393,[85,161,170,183,366,44]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.StyleSheet,o=s.Text,l=s.ToastAndroid,c=s.TouchableWithoutFeedback,h=r(d[2]),T=r(d[3]),u=(function(s){function n(){var t,s;babelHelpers.classCallCheck(this,n);for(var o=arguments.length,l=new Array(o),c=0;c<o;c++)l[c]=arguments[c];return(s=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(n)).call.apply(t,[this].concat(l)))).state={},s}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"render",value:function(){return t.createElement(T,{title:"ToastAndroid"},t.createElement(h,{title:"Simple toast"},t.createElement(c,{onPress:function(){return l.show('This is a toast with short duration',l.SHORT)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with long duration"},t.createElement(c,{onPress:function(){return l.show('This is a toast with long duration',l.LONG)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with top gravity"},t.createElement(c,{onPress:function(){return l.showWithGravity('This is a toast with top gravity',l.SHORT,l.TOP)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with center gravity"},t.createElement(c,{onPress:function(){return l.showWithGravity('This is a toast with center gravity',l.SHORT,l.CENTER)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with bottom gravity"},t.createElement(c,{onPress:function(){return l.showWithGravity('This is a toast with bottom gravity',l.SHORT,l.BOTTOM)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with x offset"},t.createElement(c,{onPress:function(){return l.showWithGravityAndOffset('This is a toast with x offset',l.SHORT,l.CENTER,50,0)}},t.createElement(o,{style:E.text},"Click me."))),t.createElement(h,{title:"Toast with y offset"},t.createElement(c,{onPress:function(){return l.showWithGravityAndOffset('This is a toast with y offset',l.SHORT,l.BOTTOM,0,50)}},t.createElement(o,{style:E.text},"Click me."))))}}]),n})(t.Component);u.title='Toast Example',u.description='Example that demonstrates the use of an Android Toast to provide feedback.';var E=n.create({text:{color:'black'}});m.exports=u},394,[85,170,302,303]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=n.Animated,l=n.StyleSheet,s=n.Text,c=n.View,p=(function(n){function l(){var t,n;babelHelpers.classCallCheck(this,l);for(var s=arguments.length,c=new Array(s),p=0;p<s;p++)c[p]=arguments[p];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(c)))).state={theta:new o.Value(45)},n._animate=function(){n.state.theta.setValue(0),o.timing(n.state.theta,{toValue:360,duration:5e3}).start(n._animate)},n}return babelHelpers.inherits(l,n),babelHelpers.createClass(l,[{key:"componentDidMount",value:function(){this._animate()}},{key:"render",value:function(){return t.createElement(c,{style:u.flipCardContainer},t.createElement(o.View,{style:[u.flipCard,{transform:[{perspective:850},{rotateX:this.state.theta.interpolate({inputRange:[0,180],outputRange:['0deg','180deg']})}]}]},t.createElement(s,{style:u.flipText},"This text is flipping great.")),t.createElement(o.View,{style:[u.flipCard,{position:'absolute',top:0,backgroundColor:'red',transform:[{perspective:850},{rotateX:this.state.theta.interpolate({inputRange:[0,180],outputRange:['180deg','360deg']})}]}]},t.createElement(s,{style:u.flipText},"On the flip side...")))}}]),l})(t.Component),u=l.create({container:{height:500},box1:{left:0,backgroundColor:'green',height:50,position:'absolute',top:0,transform:[{translateX:100},{translateY:50},{rotate:'30deg'},{scaleX:2},{scaleY:2}],width:50},box2:{left:0,backgroundColor:'purple',height:50,position:'absolute',top:0,transform:[{scaleX:2},{scaleY:2},{translateX:100},{translateY:50},{rotate:'30deg'}],width:50},box3step1:{left:0,backgroundColor:'lightpink',height:50,position:'absolute',top:0,transform:[{rotate:'30deg'}],width:50},box3step2:{left:0,backgroundColor:'hotpink',height:50,opacity:.5,position:'absolute',top:0,transform:[{rotate:'30deg'},{scaleX:2},{scaleY:2}],width:50},box3step3:{left:0,backgroundColor:'deeppink',height:50,opacity:.5,position:'absolute',top:0,transform:[{rotate:'30deg'},{scaleX:2},{scaleY:2},{translateX:100},{translateY:50}],width:50},box4:{left:0,backgroundColor:'darkorange',height:50,position:'absolute',top:0,transform:[{translate:[200,350]},{scale:2.5},{rotate:'-0.2rad'}],width:100},box5:{backgroundColor:'maroon',height:50,position:'absolute',right:0,top:0,width:50},box5Transform:{transform:[{translate:[-50,35]},{rotate:'50deg'},{scale:2}]},flipCardContainer:{marginVertical:40,flex:1,alignSelf:'center'},flipCard:{width:200,height:200,alignItems:'center',justifyContent:'center',backgroundColor:'blue',backfaceVisibility:'hidden'},flipText:{width:90,fontSize:20,color:'white',fontWeight:'bold'}});e.title='Transforms',e.description='View transforms',e.examples=[{title:'Perspective, Rotate, Animation',description:'perspective: 850, rotateX: Animated.timing(0 -> 360)',render:function(){return t.createElement(p,null)}},{title:'Translate, Rotate, Scale',description:"translateX: 100, translateY: 50, rotate: '30deg', scaleX: 2, scaleY: 2",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box1}))}},{title:'Scale, Translate, Rotate, ',description:"scaleX: 2, scaleY: 2, translateX: 100, translateY: 50, rotate: '30deg'",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box2}))}},{title:'Rotate',description:"rotate: '30deg'",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box3step1}))}},{title:'Rotate, Scale',description:"rotate: '30deg', scaleX: 2, scaleY: 2",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box3step2}))}},{title:'Rotate, Scale, Translate ',description:"rotate: '30deg', scaleX: 2, scaleY: 2, translateX: 100, translateY: 50",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box3step3}))}},{title:'Translate, Scale, Rotate',description:"translate: [200, 350], scale: 2.5, rotate: '-0.2rad'",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:u.box4}))}},{title:'Translate, Rotate, Scale',description:"translate: [-50, 35], rotate: '50deg', scale: 2",render:function(){return t.createElement(c,{style:u.container},t.createElement(c,{style:[u.box5,u.box5Transform]}))}}]},395,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t,n,l=r(d[0]),o=r(d[1]),c=o.StyleSheet,u=o.View,b=o.Text,s=o.TouchableHighlight,p=o.Vibration;o.Platform;e.framework='React',e.title='Vibration',e.description='Vibration API',t=[0,500,200,500],n="[0, 500, 200, 500]\narg 0: duration to wait before turning the vibrator on.\narg with odd: vibration length.\narg with even: duration to wait before next vibration.\n",e.examples=[{title:'Pattern Descriptions',render:function(){return l.createElement(u,{style:f.wrapper},l.createElement(b,null,n))}},{title:'Vibration.vibrate()',render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate()}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate")))}},{title:"Vibration.vibrate([0, 500, 200, 500])",render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate(t)}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate once")))}},{title:"Vibration.vibrate([0, 500, 200, 500], true)",render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate(t,!0)}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate until cancel")))}},{title:'Vibration.cancel()',render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.cancel()}},l.createElement(u,{style:f.button},l.createElement(b,null,"Cancel")))}}];var f=c.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}})},396,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.Image,l=s.PixelRatio,o=s.ScrollView,c=s.StyleSheet,u=s.Text,b=s.TextInput,h=s.TouchableOpacity,p=s.View,f='ws://localhost:5555/',y='http://localhost:5556/',S=['close','error','message','open'],v=['CONNECTING','OPEN','CLOSING','CLOSED'],k=(function(s){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"render",value:function(){var s=t.createElement(u,{style:T.buttonLabel},this.props.label);return this.props.disabled?t.createElement(p,{style:[T.button,T.disabledButton]},s):t.createElement(h,{onPress:this.props.onPress,style:T.button},s)}}]),n})(t.Component),E=(function(s){function n(){return babelHelpers.classCallCheck(this,n),babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).apply(this,arguments))}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"render",value:function(){return t.createElement(p,{style:T.row},t.createElement(u,null,this.props.label),this.props.value?t.createElement(u,null,this.props.value):null,this.props.children)}}]),n})(t.Component),C=(function(s){function l(){var t,s;babelHelpers.classCallCheck(this,l);for(var n=arguments.length,o=new Array(n),c=0;c<n;c++)o[c]=arguments[c];return(s=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(l)).call.apply(t,[this].concat(o)))).ws=null,s.state={blob:null},s}return babelHelpers.inherits(l,s),babelHelpers.createClass(l,[{key:"componentDidMount",value:function(){var t=this,s=this.ws=new WebSocket(this.props.url);s.binaryType='blob',s.onmessage=function(s){if(s.data instanceof Blob){var n=s.data;t.state.blob&&t.state.blob.close(),t.setState({blob:n})}},s.onopen=function(t){s.send('getImage')}}},{key:"componentUnmount",value:function(){this.state.blob&&this.state.blob.close(),this.ws&&this.ws.close()}},{key:"render",value:function(){return this.state.blob?t.createElement(n,{source:{uri:URL.createObjectURL(this.state.blob)},style:{width:50,height:50}}):t.createElement(p,null)}}]),l})(t.Component);function w(t){return void 0===t||null===t?'(no value)':'undefined'!=typeof ArrayBuffer&&'undefined'!=typeof Uint8Array&&t instanceof ArrayBuffer?"ArrayBuffer {"+String(Array.from(new Uint8Array(t)))+"}":t}var H=(function(s){function n(){var t,s;babelHelpers.classCallCheck(this,n);for(var l=arguments.length,o=new 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n={socketState:t.target.readyState,lastSocketEvent:t.type};'message'===t.type&&(n.lastMessage=t.data),s.setState(n)},s._sendText=function(){s.state.socket&&(s.state.socket.send(s.state.outgoingMessage),s.setState({outgoingMessage:''}))},s._sendHttp=function(){s.setState({fetchStatus:'fetching'}),fetch(s.state.httpUrl).then(function(t){t.status>=200&&t.status<400&&s.setState({fetchStatus:'OK'})})},s._sendBinary=function(){if(s.state.socket&&'undefined'!=typeof ArrayBuffer&&'undefined'!=typeof Uint8Array){for(var t=s.state.outgoingMessage,n=new Uint8Array(t.length),l=0;l<t.length;l++)n[l]=t.charCodeAt(l);s.state.socket.send(n),s.setState({outgoingMessage:''})}},s}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"render",value:function(){var s=this,n=v[this.state.socketState||-1],l=!this.state.socket||this.state.socket.readyState>=WebSocket.CLOSING,c='OPEN'===n;return t.createElement(o,{style:T.container},t.createElement(p,{style:T.note},t.createElement(u,null,"To start the WS test server:"),t.createElement(u,{style:T.monospace},"./RNTester/js/websocket_test_server.js")),t.createElement(E,{label:"Current WebSocket state",value:w(n)}),t.createElement(E,{label:"Last WebSocket event",value:w(this.state.lastSocketEvent)}),t.createElement(E,{label:"Last message received",value:w(this.state.lastMessage)}),t.createElement(E,{label:"Last image received"},c?t.createElement(C,{url:this.state.url}):null),t.createElement(b,{style:T.textInput,autoCorrect:!1,placeholder:"Server URL...",onChangeText:function(t){return s.setState({url:t})},value:this.state.url}),t.createElement(p,{style:T.buttonRow},t.createElement(k,{onPress:this._connect,label:"Connect",disabled:!l}),t.createElement(k,{onPress:this._disconnect,label:"Disconnect",disabled:l})),t.createElement(b,{style:T.textInput,autoCorrect:!1,placeholder:"Type message here...",onChangeText:function(t){return s.setState({outgoingMessage:t})},value:this.state.outgoingMessage}),t.createElement(p,{style:T.buttonRow},t.createElement(k,{onPress:this._sendText,label:"Send as text",disabled:!c}),t.createElement(k,{onPress:this._sendBinary,label:"Send as binary",disabled:!c})),t.createElement(p,{style:T.note},t.createElement(u,null,"To start the HTTP test server:"),t.createElement(u,{style:T.monospace},"./RNTester/js/http_test_server.js")),t.createElement(b,{style:T.textInput,autoCorrect:!1,placeholder:"HTTP URL...",onChangeText:function(t){return s.setState({httpUrl:t})},value:this.state.httpUrl}),t.createElement(p,{style:T.buttonRow},t.createElement(k,{onPress:this._sendHttp,label:"Send HTTP request to set cookie",disabled:'fetching'===this.state.fetchStatus})),t.createElement(p,{style:T.note},t.createElement(u,null,'OK'===this.state.fetchStatus?'Done. Check your WS server console to see if the next WS requests include the cookie (should be "wstest=OK")':'-')))}}]),n})(t.Component);H.title='WebSocket',H.description='WebSocket API';var T=c.create({container:{flex:1},note:{padding:8,margin:4,backgroundColor:'white'},monospace:{fontFamily:'courier',fontSize:11},row:{height:40,padding:4,backgroundColor:'white',flexDirection:'row',justifyContent:'space-between',alignItems:'center',borderBottomWidth:1/l.get(),borderColor:'grey'},button:{margin:8,padding:8,borderRadius:4,backgroundColor:'blue',alignSelf:'center'},disabledButton:{opacity:.5},buttonLabel:{color:'white'},buttonRow:{flexDirection:'row',justifyContent:'center'},textInput:{height:40,backgroundColor:'white',margin:8,padding:8}});m.exports=H},397,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),u=r(d[3]),o=r(d[4]),c=r(d[5]),s=r(d[6]),f=r(d[7]);e.framework='React',e.title='XMLHttpRequest',e.description="Example that demonstrates upload and download requests using XMLHttpRequest.",e.examples=[{title:'File Download',render:function(){return t.createElement(n,null)}},{title:'multipart/form-data Upload',render:function(){return t.createElement(l,null)}},{title:'multipart/form-data Upload',render:function(){return t.createElement(u,null)}},{title:'Fetch Test',render:function(){return t.createElement(c,null)}},{title:'Headers',render:function(){return t.createElement(o,null)}},{title:'Time Out Test',render:function(){return t.createElement(s,null)}},{title:'Cookies',render:function(){return t.createElement(f,null)}}]},398,[85,399,400,401,402,403,404,405]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n.Alert,s=n.Linking,o=n.Picker,p=n.StyleSheet,u=n.Text,y=n.TouchableHighlight,c=n.View,h={String:String,ArrayBuffer:ArrayBuffer,Int8Array:Int8Array,Uint8Array:Uint8Array,Uint8ClampedArray:Uint8ClampedArray,Int16Array:Int16Array,Uint16Array:Uint16Array,Int32Array:Int32Array,Uint32Array:Uint32Array,Float32Array:Float32Array,Float64Array:Float64Array,DataView:DataView},f="\nI am the spirit that negates.\nAnd rightly so, for all that comes to be\nDeserves to perish wretchedly;\n'Twere better nothing would begin.\nThus everything that that your terms, sin,\nDestruction, evil represent\u2014\nThat is my proper element.\n\n--Faust, JW Goethe\n",A=(function(n){function p(){var t,n;babelHelpers.classCallCheck(this,p);for(var l=arguments.length,s=new Array(l),o=0;o<l;o++)s[o]=arguments[o];return(n=babelHelpers.possibleConstructorReturn(this,(t=babelHelpers.getPrototypeOf(p)).call.apply(t,[this].concat(s)))).state={type:'Uint8Array'},n._upload=function(){var t=new XMLHttpRequest;if(t.open('POST','http://posttestserver.com/post.php'),t.onload=function(){return p.handlePostTestServerUpload(t)},t.setRequestHeader('Content-Type','text/plain'),'String'!==n.state.type){for(var l=new ArrayBuffer(256),s=new Uint8Array(l),o=0;o<f.length;o++)s[o]=f.charCodeAt(o);if('ArrayBuffer'!==n.state.type)if('Uint8Array'!==n.state.type){var u=h[n.state.type];t.send(new u(l))}else t.send(s);else t.send(l)}else t.send(f)},n}return babelHelpers.inherits(p,n),babelHelpers.createClass(p,[{key:"render",value:function(){var n=this;return t.createElement(c,null,t.createElement(u,null,"Upload 255 bytes as..."),t.createElement(o,{selectedValue:this.state.type,onValueChange:function(t){return n.setState({type:t})}},Object.keys(h).map(function(n){return t.createElement(o.Item,{key:n,label:n,value:n})})),t.createElement(c,{style:b.uploadButton},t.createElement(y,{onPress:this._upload},t.createElement(c,{style:b.uploadButtonBox},t.createElement(u,{style:b.uploadButtonLabel},"Upload")))))}}],[{key:"handlePostTestServerUpload",value:function(t){if(200===t.status)if(t.responseText){var n=t.responseText.indexOf('http://www.posttestserver.com/');if(-1!==n){var o=t.responseText.slice(n).split('\n')[0];console.log('Upload successful: '+o),s.openURL(o)}else l.alert('Upload failed','Invalid response payload.')}else l.alert('Upload failed','No response payload.');else l.alert('Upload failed','Expected HTTP 200 OK response, got '+t.status)}}]),p})(t.Component),b=p.create({uploadButton:{marginTop:16},uploadButtonBox:{flex:1,paddingVertical:12,alignItems:'center',backgroundColor:'blue',borderRadius:4},uploadButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}});m.exports=A},400,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=(o.Alert,o.CameraRoll),l=o.Image,s=o.ImageEditor,u=(o.Linking,o.Platform,o.StyleSheet),h=o.Text,p=o.TextInput,c=o.TouchableHighlight,P=o.View,f=r(d[2]),x=20,b=(function(o){function u(t){var o;return babelHelpers.classCallCheck(this,u),(o=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(u).call(this,t))).state={isUploading:!1,uploadProgress:null,randomPhoto:null,textParams:[]},o._isMounted=!0,o._fetchRandomPhoto=function(){n.getPhotos({first:x}).then(function(t){if(o._isMounted){var n=t.edges,l=n[Math.floor(Math.random()*n.length)],u=l&&l.node&&l.node.image;if(u){var h=u.width,p=u.height;h*=.25,p*=.25,s.cropImage(u.uri,{offset:{x:0,y:0},size:{width:h,height:p}},function(t){return o.setState({randomPhoto:{uri:t}})},function(t){})}}},function(t){})},o._addTextParam=function(){var t=o.state.textParams;t.push({name:'',value:''}),o.setState({textParams:t})},o._upload=function(){var t=new XMLHttpRequest;t.open('POST','http://posttestserver.com/post.php'),t.onload=function(){o.setState({isUploading:!1}),f.handlePostTestServerUpload(t)};var n=new FormData;o.state.randomPhoto&&n.append('image',babelHelpers.objectSpread({},o.state.randomPhoto,{type:'image/jpg',name:'image.jpg'})),o.state.textParams.forEach(function(t){return n.append(t.name,t.value)}),t.upload.onprogress=function(t){t.lengthComputable&&o.setState({uploadProgress:t.loaded/t.total})},t.send(n),o.setState({isUploading:!0})},o._fetchRandomPhoto(),o}return babelHelpers.inherits(u,o),babelHelpers.createClass(u,[{key:"componentWillUnmount",value:function(){this._isMounted=!1}},{key:"_onTextParamNameChange",value:function(t,o){var n=this.state.textParams;n[t].name=o,this.setState({textParams:n})}},{key:"_onTextParamValueChange",value:function(t,o){var n=this.state.textParams;n[t].value=o,this.setState({textParams:n})}},{key:"render",value:function(){var o=this,n=null;this.state.randomPhoto&&(n=t.createElement(l,{source:this.state.randomPhoto,style:y.randomPhoto}));var s=this.state.textParams.map(function(n,l){return t.createElement(P,{style:y.paramRow},t.createElement(p,{autoCapitalize:"none",autoCorrect:!1,onChangeText:o._onTextParamNameChange.bind(o,l),placeholder:"name...",style:y.textInput}),t.createElement(h,{style:y.equalSign},"="),t.createElement(p,{autoCapitalize:"none",autoCorrect:!1,onChangeText:o._onTextParamValueChange.bind(o,l),placeholder:"value...",style:y.textInput}))}),u=this.state.isUploading?'Uploading...':'Upload',f=this.state.uploadProgress;null!==f&&(u+=' '+Math.round(100*f)+'%');var x=t.createElement(P,{style:y.uploadButtonBox},t.createElement(h,{style:y.uploadButtonLabel},u));return this.state.isUploading||(x=t.createElement(c,{onPress:this._upload},x)),t.createElement(P,null,t.createElement(P,{style:y.paramRow},t.createElement(h,{style:y.photoLabel},"Random photo from your library (",t.createElement(h,{style:y.textButton,onPress:this._fetchRandomPhoto},"update"),")"),n),s,t.createElement(P,null,t.createElement(h,{style:[y.textButton,y.addTextParamButton],onPress:this._addTextParam},"Add a text param")),t.createElement(P,{style:y.uploadButton},x))}}]),u})(t.Component),y=u.create({paramRow:{flexDirection:'row',paddingVertical:8,alignItems:'center',borderBottomWidth:u.hairlineWidth,borderBottomColor:'grey'},photoLabel:{flex:1},randomPhoto:{width:50,height:50},textButton:{color:'blue'},addTextParamButton:{marginTop:8},textInput:{flex:1,borderRadius:3,borderColor:'grey',borderWidth:1,height:50,paddingLeft:8},equalSign:{paddingHorizontal:4},uploadButton:{marginTop:16},uploadButtonBox:{flex:1,paddingVertical:12,alignItems:'center',backgroundColor:'blue',borderRadius:4},uploadButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}});m.exports=b},401,[85,170,400]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.StyleSheet,l=s.Text,o=s.TouchableHighlight,u=s.View,h=(function(s){function n(t){var s;return babelHelpers.classCallCheck(this,n),(s=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).call(this,t))).cancelled=!1,s.state={status:'',headers:'',contentSize:1,downloaded:0},s}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"download",value:function(){var t=this;this.xhr&&this.xhr.abort();var s=this.xhr||new XMLHttpRequest;s.onreadystatechange=function(){if(s.readyState===s.DONE){if(t.cancelled)return void(t.cancelled=!1);200===s.status?t.setState({status:'Download complete!',headers:s.getAllResponseHeaders()}):0!==s.status?t.setState({status:'Error: Server returned HTTP status of '+s.status+' '+s.responseText}):t.setState({status:'Error: '+s.responseText})}},s.open('GET','https://httpbin.org/response-headers?header1=value&header2=value1&header2=value2'),s.send(),this.xhr=s,this.setState({status:'Downloading...'})}},{key:"componentWillUnmount",value:function(){this.cancelled=!0,this.xhr&&this.xhr.abort()}},{key:"render",value:function(){var s='Downloading...'===this.state.status?t.createElement(u,{style:c.wrapper},t.createElement(u,{style:c.button},t.createElement(l,null,"..."))):t.createElement(o,{style:c.wrapper,onPress:this.download.bind(this)},t.createElement(u,{style:c.button},t.createElement(l,null,"Get headers")));return t.createElement(u,null,s,t.createElement(l,null,this.state.headers))}}]),n})(t.Component),c=n.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:8}});m.exports=h},402,[85,170]);
-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=s.StyleSheet,l=s.Text,o=s.TextInput,u=s.View,p=(s.Platform,(function(s){function n(t){var s;return babelHelpers.classCallCheck(this,n),(s=babelHelpers.possibleConstructorReturn(this,babelHelpers.getPrototypeOf(n).call(this,t))).state={responseText:null},s.responseURL=null,s.responseHeaders=null,s}return babelHelpers.inherits(n,s),babelHelpers.createClass(n,[{key:"submit",value:function(t){var s=this;fetch(t).then(function(t){return s.responseURL=t.url,s.responseHeaders=t.headers,t.text()}).then(function(t){s.setState({responseText:t})})}},{key:"_renderHeaders",value:function(){if(!this.responseHeaders)return null;for(var s=[],n=Object.keys(this.responseHeaders.map),o=0;o<n.length;o++){var u=n[o],p=this.responseHeaders.get(u);s.push(t.createElement(l,null,u,": ",p))}return s}},{key:"render",value:function(){var s=this,n=this.responseURL?t.createElement(u,{style:{marginTop:10}},t.createElement(l,{style:h.label},"Server response URL:"),t.createElement(l,null,this.responseURL)):null,p=this.responseHeaders?t.createElement(u,{style:{marginTop:10}},t.createElement(l,{style:h.label},"Server response headers:"),this._renderHeaders()):null,c=this.state.responseText?t.createElement(u,{style:{marginTop:10}},t.createElement(l,{style:h.label},"Server response:"),t.createElement(o,{editable:!1,multiline:!0,defaultValue:this.state.responseText,style:h.textOutput})):null;return t.createElement(u,null,t.createElement(l,{style:h.label},"Edit URL to submit:"),t.createElement(o,{returnKeyType:"go",defaultValue:"http://www.posttestserver.com/post.php",onSubmitEditing:function(t){s.submit(t.nativeEvent.text)},style:h.textInput}),n,p,c)}}]),n})(t.Component)),h=n.create({textInput:{flex:1,borderRadius:3,borderColor:'grey',borderWidth:1,height:44,paddingLeft:8},label:{flex:1,color:'#aaa',fontWeight:'500',height:20},textOutput:{flex:1,fontSize:17,borderRadius:3,borderColor:'grey',borderWidth:1,height:200,paddingLeft:8}});m.exports=p},403,[85,170]);
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-__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=function(p,n){return!p||'RNTesterListAction'===n.type||p.openExample&&'RNTesterBackAction'===n.type?{openExample:null}:'RNTesterExampleAction'===n.type&&t.Modules[n.openExample]?{openExample:n.openExample}:p}},406,[307]);
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l.componentDidUpdate||o===e.memoizedProps&&u===e.memoizedState||(t.effectTag|=4),"function"!=typeof l.getSnapshotBeforeUpdate||o===e.memoizedProps&&u===e.memoizedState||(t.effectTag|=256),r=!1);return jr(e,t,n,r,a,i)}function jr(e,t,n,r,i,a){Mr(e,t);var l=0!=(64&t.effectTag);if(!r&&!l)return i&&Yt(t,n,!1),Br(e,t,a);r=t.stateNode,Nr.current=t;var o=l&&"function"!=typeof n.getDerivedStateFromError?null:r.render();return t.effectTag|=1,null!==e&&l?(t.child=wn(t,e.child,null,a),t.child=wn(t,null,o,a)):Ur(e,t,o,a),t.memoizedState=r.state,i&&Yt(t,n,!0),t.child}function Fr(e){var t=e.stateNode;t.pendingContext?Qt(0,t.pendingContext,t.pendingContext!==t.context):t.context&&Qt(0,t.context,!1),Mn(e,t.containerInfo)}function Hr(e,t,n){var r=t.mode,i=t.pendingProps,a=t.memoizedState;if(0==(64&t.effectTag)){a=null;var l=!1}else a={timedOutAt:null!==a?a.timedOutAt:0},l=!0,t.effectTag&=-65;if(null===e)if(l){var o=i.fallback;e=rn(null,r,0,null),0==(1&t.mode)&&(e.child=null!==t.memoizedState?t.child.child:t.child),r=rn(o,r,n,null),e.sibling=r,(n=e).return=r.return=t}else n=r=Nn(t,null,i.children,n);else null!==e.memoizedState?(o=(r=e.child).sibling,l?(n=i.fallback,i=tn(r,r.pendingProps),0==(1&t.mode)&&((l=null!==t.memoizedState?t.child.child:t.child)!==r.child&&(i.child=l)),r=i.sibling=tn(o,n,o.expirationTime),n=i,i.childExpirationTime=0,n.return=r.return=t):n=r=wn(t,r.child,i.children,n)):(o=e.child,l?(l=i.fallback,(i=rn(null,r,0,null)).child=o,0==(1&t.mode)&&(i.child=null!==t.memoizedState?t.child.child:t.child),(r=i.sibling=rn(l,r,n,null)).effectTag|=2,n=i,i.childExpirationTime=0,n.return=r.return=t):r=n=wn(t,o,i.children,n)),t.stateNode=e.stateNode;return t.memoizedState=a,t.child=n,r}function Br(e,t,n){if(null!==e&&(t.contextDependencies=e.contextDependencies),t.childExpirationTime<n)return null;if(v(null===e||t.child===e.child,"Resuming work not yet implemented."),null!==t.child){for(n=tn(e=t.child,e.pendingProps,e.expirationTime),t.child=n,n.return=t;null!==e.sibling;)e=e.sibling,(n=n.sibling=tn(e,e.pendingProps,e.expirationTime)).return=t;n.sibling=null}return t.child}function Qr(e,t,n){var r=t.expirationTime;if(null!==e){if(e.memoizedProps!==t.pendingProps||Wt.current)zr=!0;else if(r<n){switch(zr=!1,t.tag){case 3:Fr(t);break;case 5:On(t);break;case 1:Ft(t.type)&&Lt(t);break;case 4:Mn(t,t.stateNode.containerInfo);break;case 10:$r(t,t.memoizedProps.value);break;case 13:if(null!==t.memoizedState)return 0!==(r=t.child.childExpirationTime)&&r>=n?Hr(e,t,n):null!==(t=Br(e,t,n))?t.sibling:null}return Br(e,t,n)}}else zr=!1;switch(t.expirationTime=0,t.tag){case 2:r=t.elementType,null!==e&&(e.alternate=null,t.alternate=null,t.effectTag|=2),e=t.pendingProps;var i=jt(t,Mt.current);if(Gr(t,n),i=cr(null,t,r,e,i,n),t.effectTag|=1,"object"==typeof i&&null!==i&&"function"==typeof i.render&&void 0===i.$$typeof){if(t.tag=1,fr(),Ft(r)){var a=!0;Lt(t)}else a=!1;t.memoizedState=null!==i.state&&void 0!==i.state?i.state:null;var l=r.getDerivedStateFromProps;"function"==typeof l&&bn(t,r,l,e),i.updater=Tn,t.stateNode=i,i._reactInternalFiber=t,Pn(t,r,e,n),t=jr(null,t,r,!0,a,n)}else t.tag=0,Ur(null,t,i,n),t=t.child;return t;case 16:switch(i=t.elementType,null!==e&&(e.alternate=null,t.alternate=null,t.effectTag|=2),a=t.pendingProps,e=vn(i),t.type=e,i=t.tag=en(e),a=gn(e,a),l=void 0,i){case 0:l=Wr(null,t,e,a,n);break;case 1:l=Or(null,t,e,a,n);break;case 11:l=Ir(null,t,e,a,n);break;case 14:l=Ar(null,t,e,gn(e.type,a),r,n);break;default:v(!1,"Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",e,"")}return l;case 0:return r=t.type,i=t.pendingProps,Wr(e,t,r,i=t.elementType===r?i:gn(r,i),n);case 1:return r=t.type,i=t.pendingProps,Or(e,t,r,i=t.elementType===r?i:gn(r,i),n);case 3:return Fr(t),v(null!==(r=t.updateQueue),"If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. 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This error is likely caused by a bug in React. Please file an issue.")}var Vr={current:null},Lr=null,Yr=null,Xr=null;function $r(e,t){var n=e.type._context;At(Vr,n._currentValue),n._currentValue=t}function qr(e){var t=Vr.current;It(Vr),e.type._context._currentValue=t}function Gr(e,t){Lr=e,Xr=Yr=null;var n=e.contextDependencies;null!==n&&n.expirationTime>=t&&(zr=!0),e.contextDependencies=null}function Jr(e,t){return Xr!==e&&!1!==t&&0!==t&&("number"==typeof t&&1073741823!==t||(Xr=e,t=1073741823),t={context:e,observedBits:t,next:null},null===Yr?(v(null!==Lr,"Context can only be read while React is rendering. In classes, you can read it in the render method or getDerivedStateFromProps. In function components, you can read it directly in the function body, but not inside Hooks like useReducer() or useMemo()."),Yr=t,Lr.contextDependencies={first:t,expirationTime:0}):Yr=Yr.next=t),e._currentValue}var Kr=0,Zr=1,ei=2,ti=3,ni=!1;function ri(e){return{baseState:e,firstUpdate:null,lastUpdate:null,firstCapturedUpdate:null,lastCapturedUpdate:null,firstEffect:null,lastEffect:null,firstCapturedEffect:null,lastCapturedEffect:null}}function ii(e){return{baseState:e.baseState,firstUpdate:e.firstUpdate,lastUpdate:e.lastUpdate,firstCapturedUpdate:null,lastCapturedUpdate:null,firstEffect:null,lastEffect:null,firstCapturedEffect:null,lastCapturedEffect:null}}function ai(e){return{expirationTime:e,tag:Kr,payload:null,callback:null,next:null,nextEffect:null}}function li(e,t){null===e.lastUpdate?e.firstUpdate=e.lastUpdate=t:(e.lastUpdate.next=t,e.lastUpdate=t)}function oi(e,t){var n=e.alternate;if(null===n){var r=e.updateQueue,i=null;null===r&&(r=e.updateQueue=ri(e.memoizedState))}else r=e.updateQueue,i=n.updateQueue,null===r?null===i?(r=e.updateQueue=ri(e.memoizedState),i=n.updateQueue=ri(n.memoizedState)):r=e.updateQueue=ii(i):null===i&&(i=n.updateQueue=ii(r));null===i||r===i?li(r,t):null===r.lastUpdate||null===i.lastUpdate?(li(r,t),li(i,t)):(li(r,t),i.lastUpdate=t)}function ui(e,t){var n=e.updateQueue;null===(n=null===n?e.updateQueue=ri(e.memoizedState):si(e,n)).lastCapturedUpdate?n.firstCapturedUpdate=n.lastCapturedUpdate=t:(n.lastCapturedUpdate.next=t,n.lastCapturedUpdate=t)}function si(e,t){var n=e.alternate;return null!==n&&t===n.updateQueue&&(t=e.updateQueue=ii(t)),t}function ci(e,t,n,r,i,a){switch(n.tag){case Zr:return"function"==typeof(e=n.payload)?e.call(a,r,i):e;case ti:e.effectTag=-2049&e.effectTag|64;case Kr:if(null===(i="function"==typeof(e=n.payload)?e.call(a,r,i):e)||void 0===i)break;return o({},r,i);case ei:ni=!0}return r}function fi(e,t,n,r,i){ni=!1;for(var a=(t=si(e,t)).baseState,l=null,o=0,u=t.firstUpdate,s=a;null!==u;){var c=u.expirationTime;c<i?(null===l&&(l=u,a=s),o<c&&(o=c)):(s=ci(e,0,u,s,n,r),null!==u.callback&&(e.effectTag|=32,u.nextEffect=null,null===t.lastEffect?t.firstEffect=t.lastEffect=u:(t.lastEffect.nextEffect=u,t.lastEffect=u))),u=u.next}for(c=null,u=t.firstCapturedUpdate;null!==u;){var f=u.expirationTime;f<i?(null===c&&(c=u,null===l&&(a=s)),o<f&&(o=f)):(s=ci(e,0,u,s,n,r),null!==u.callback&&(e.effectTag|=32,u.nextEffect=null,null===t.lastCapturedEffect?t.firstCapturedEffect=t.lastCapturedEffect=u:(t.lastCapturedEffect.nextEffect=u,t.lastCapturedEffect=u))),u=u.next}null===l&&(t.lastUpdate=null),null===c?t.lastCapturedUpdate=null:e.effectTag|=32,null===l&&null===c&&(a=s),t.baseState=a,t.firstUpdate=l,t.firstCapturedUpdate=c,e.expirationTime=o,e.memoizedState=s}function di(e,t,n){null!==t.firstCapturedUpdate&&(null!==t.lastUpdate&&(t.lastUpdate.next=t.firstCapturedUpdate,t.lastUpdate=t.lastCapturedUpdate),t.firstCapturedUpdate=t.lastCapturedUpdate=null),pi(t.firstEffect,n),t.firstEffect=t.lastEffect=null,pi(t.firstCapturedEffect,n),t.firstCapturedEffect=t.lastCapturedEffect=null}function pi(e,t){for(;null!==e;){var n=e.callback;if(null!==n){e.callback=null;var r=t;v("function"==typeof n,"Invalid argument passed as callback. 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This error is likely caused by a bug in React. Please file an issue."),n=void 0}var r=t=void 0;switch(n.tag){case 5:t=n.stateNode,r=!1;break;case 3:case 4:t=n.stateNode.containerInfo,r=!0;break;default:v(!1,"Invalid host parent fiber. This error is likely caused by a bug in React. 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This error is likely caused by a bug in React. Please file an issue."),n.tag){case 5:r=n.stateNode,i=!1;break e;case 3:case 4:r=n.stateNode.containerInfo,i=!0;break e}n=n.return}n=!0}if(5===t.tag||6===t.tag){e:for(var a=t,l=a;;)if(Ei(l),null!==l.child&&4!==l.tag)l.child.return=l,l=l.child;else{if(l===a)break;for(;null===l.sibling;){if(null===l.return||l.return===a)break e;l=l.return}l.sibling.return=l.return,l=l.sibling}if(i)a=r,Pt(t.stateNode),s.manageChildren(a,[],[],[],[],[0]);else{a=r;var o=t.stateNode;Pt(o),o=(l=a._children).indexOf(o),l.splice(o,1),s.manageChildren(a._nativeTag,[],[],[],[],[o])}}else if(4===t.tag){if(null!==t.child){r=t.stateNode.containerInfo,i=!0,t.child.return=t,t=t.child;continue}}else if(Ei(t),null!==t.child){t.child.return=t,t=t.child;continue}if(t===e)break;for(;null===t.sibling;){if(null===t.return||t.return===e)return;4===(t=t.return).tag&&(n=!1)}t.sibling.return=t.return,t=t.sibling}}function wi(e,t){switch(t.tag){case 0:case 11:case 14:case 15:ki(Bn,Qn,t);break;case 1:break;case 5:var n=t.stateNode;if(null!=n){var r=t.memoizedProps;e=null!==e?e.memoizedProps:r;t.type;var i=t.updateQueue;t.updateQueue=null,null!==i&&Rt(n,i,0,e,r)}break;case 6:v(null!==t.stateNode,"This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue."),s.updateView(t.stateNode,"RCTRawText",{text:t.memoizedProps});break;case 3:case 12:break;case 13:if(n=t.memoizedState,r=void 0,e=t,null===n?r=!1:(r=!0,e=t.child,0===n.timedOutAt&&(n.timedOutAt=Ia())),null!==e&&Pi(e,r),null!==(n=t.updateQueue)){t.updateQueue=null;var a=t.stateNode;null===a&&(a=t.stateNode=new Ti),n.forEach(function(e){var n=oa.bind(null,t,e);a.has(e)||(a.add(e),e.then(n,n))})}break;case 17:break;default:v(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.")}}var Ni="function"==typeof WeakMap?WeakMap:Map;function zi(e,t,n){(n=ai(n)).tag=ti,n.payload={element:null};var r=t.value;return n.callback=function(){Fa(r),xi(e,t)},n}function Ui(e,t,n){(n=ai(n)).tag=ti;var r=e.type.getDerivedStateFromError;if("function"==typeof r){var i=t.value;n.payload=function(){return r(i)}}var a=e.stateNode;return null!==a&&"function"==typeof a.componentDidCatch&&(n.callback=function(){"function"!=typeof r&&(null===Xi?Xi=new Set([this]):Xi.add(this));var n=t.value,i=t.stack;xi(e,t),this.componentDidCatch(n,{componentStack:null!==i?i:""})}),n}function Ii(e){switch(e.tag){case 1:Ft(e.type)&&Ht();var t=e.effectTag;return 2048&t?(e.effectTag=-2049&t|64,e):null;case 3:return Wn(),Bt(),v(0==(64&(t=e.effectTag)),"The root failed to unmount after an error. This is likely a bug in React. Please file an issue."),e.effectTag=-2049&t|64,e;case 5:return jn(e),null;case 13:return 2048&(t=e.effectTag)?(e.effectTag=-2049&t|64,e):null;case 18:return null;case 4:return Wn(),null;case 10:return qr(e),null;default:return null}}var Ai=Oe.ReactCurrentDispatcher,Di=Oe.ReactCurrentOwner,Mi=!1,Wi=null,Oi=null,ji=0,Fi=-1,Hi=!1,Bi=null,Qi=!1,Vi=null,Li=null,Yi=null,Xi=null;function $i(){if(null!==Wi)for(var e=Wi.return;null!==e;){var t=e;switch(t.tag){case 1:var n=t.type.childContextTypes;null!==n&&void 0!==n&&Ht();break;case 3:Wn(),Bt();break;case 5:jn(t);break;case 4:Wn();break;case 10:qr(t)}e=e.return}Oi=null,ji=0,Fi=-1,Hi=!1,Wi=null}function qi(){for(;null!==Bi;){var e=Bi.effectTag;if(128&e){var t=Bi.alternate;null!==t&&(null!==(t=t.ref)&&("function"==typeof t?t(null):t.current=null))}switch(14&e){case 2:Ci(Bi),Bi.effectTag&=-3;break;case 6:Ci(Bi),Bi.effectTag&=-3,wi(Bi.alternate,Bi);break;case 4:wi(Bi.alternate,Bi);break;case 8:Ri(e=Bi),e.return=null,e.child=null,e.memoizedState=null,e.updateQueue=null,null!==(e=e.alternate)&&(e.return=null,e.child=null,e.memoizedState=null,e.updateQueue=null)}Bi=Bi.nextEffect}}function Gi(){for(;null!==Bi;){if(256&Bi.effectTag)e:{var e=Bi.alternate,t=Bi;switch(t.tag){case 0:case 11:case 15:ki(Hn,Fn,t);break e;case 1:if(256&t.effectTag&&null!==e){var n=e.memoizedProps,r=e.memoizedState;t=(e=t.stateNode).getSnapshotBeforeUpdate(t.elementType===t.type?n:gn(t.type,n),r),e.__reactInternalSnapshotBeforeUpdate=t}break e;case 3:case 5:case 6:case 4:case 17:break e;default:v(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.")}}Bi=Bi.nextEffect}}function Ji(e,t){for(;null!==Bi;){var n=Bi.effectTag;if(36&n){var r=Bi.alternate,i=Bi,a=t;switch(i.tag){case 0:case 11:case 15:ki(Vn,Ln,i);break;case 1:var l=i.stateNode;if(4&i.effectTag)if(null===r)l.componentDidMount();else{var o=i.elementType===i.type?r.memoizedProps:gn(i.type,r.memoizedProps);l.componentDidUpdate(o,r.memoizedState,l.__reactInternalSnapshotBeforeUpdate)}null!==(r=i.updateQueue)&&di(0,r,l);break;case 3:if(null!==(l=i.updateQueue)){if(r=null,null!==i.child)switch(i.child.tag){case 5:r=i.child.stateNode;break;case 1:r=i.child.stateNode}di(0,l,r)}break;case 5:case 6:case 4:case 12:case 13:case 17:break;default:v(!1,"This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue.")}}128&n&&(null!==(i=Bi.ref)&&(a=Bi.stateNode,"function"==typeof i?i(a):i.current=a)),512&n&&(Vi=e),Bi=Bi.nextEffect}}function Ki(e,t){Yi=Li=Vi=null;var n=ma;ma=!0;do{if(512&t.effectTag){var r=!1,i=void 0;try{var a=t;ki(Xn,Fn,a),ki(Fn,Yn,a)}catch(e){r=!0,i=e}r&&ia(t,i)}t=t.nextEffect}while(null!==t);ma=n,0!==(n=e.expirationTime)&&Aa(e,n),Ta||ma||Wa(1073741823,!1)}function Zi(){null!==Li&&(gt=null,clearTimeout(Li));null!==Yi&&Yi()}function ea(e,t){Qi=Mi=!0,v(e.current!==t,"Cannot commit the same tree as before. This is probably a bug related to the return field. This error is likely caused by a bug in React. Please file an issue.");var n=e.pendingCommitExpirationTime;v(0!==n,"Cannot commit an incomplete root. This error is likely caused by a bug in React. Please file an issue."),e.pendingCommitExpirationTime=0;var r=t.expirationTime,i=t.childExpirationTime;for(sn(e,i>r?i:r),Di.current=null,r=void 0,1<t.effectTag?null!==t.lastEffect?(t.lastEffect.nextEffect=t,r=t.firstEffect):r=t:r=t.firstEffect,Bi=r;null!==Bi;){i=!1;var a=void 0;try{Gi()}catch(e){i=!0,a=e}i&&(v(null!==Bi,"Should have next effect. This error is likely caused by a bug in React. Please file an issue."),ia(Bi,a),null!==Bi&&(Bi=Bi.nextEffect))}for(Bi=r;null!==Bi;){i=!1,a=void 0;try{qi()}catch(e){i=!0,a=e}i&&(v(null!==Bi,"Should have next effect. This error is likely caused by a bug in React. Please file an issue."),ia(Bi,a),null!==Bi&&(Bi=Bi.nextEffect))}for(e.current=t,Bi=r;null!==Bi;){i=!1,a=void 0;try{Ji(e,n)}catch(e){i=!0,a=e}i&&(v(null!==Bi,"Should have next effect. This error is likely caused by a bug in React. Please file an issue."),ia(Bi,a),null!==Bi&&(Bi=Bi.nextEffect))}if(null!==r&&null!==Vi){var l=Ki.bind(null,e,r);Li=h.unstable_runWithPriority(h.unstable_NormalPriority,function(){return bt(l)}),Yi=l}Mi=Qi=!1,"function"==typeof Xt&&Xt(t.stateNode),n=t.expirationTime,0===(t=(t=t.childExpirationTime)>n?t:n)&&(Xi=null),Ua(e,t)}function ta(e){for(;;){var t=e.alternate,n=e.return,r=e.sibling;if(0==(1024&e.effectTag)){Wi=e;e:{var i=t,a=ji,l=(t=e).pendingProps;switch(t.tag){case 2:case 16:break;case 15:case 0:break;case 1:Ft(t.type)&&Ht();break;case 3:Wn(),Bt(),(l=t.stateNode).pendingContext&&(l.context=l.pendingContext,l.pendingContext=null),null!==i&&null!==i.child||(t.effectTag&=-3),gi(t);break;case 5:jn(t),a=Dn(An.current);var o=t.type;if(null!==i&&null!=t.stateNode)vi(i,t,o,l,a),i.ref!==t.ref&&(t.effectTag|=128);else if(l){i=Dn(Un.current);var c=t,f=kt(),d=u.get(o);v("RCTView"!==o||!i.isInAParentText,"Nesting of <View> within <Text> is not currently supported.");var p=dt(null,at,l,d.validAttributes);s.createView(f,d.uiViewClassName,a,p),d=new mt(f,d),_e[f]=c,Ce[f]=l,hi(d,t,!1,!1),Et(d)&&(t.effectTag|=4),t.stateNode=d,null!==t.ref&&(t.effectTag|=128)}else v(null!==t.stateNode,"We must have new props for new mounts. 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This error is likely caused by a bug in React. Please file an issue."),Oi=null,Hi){if(i=e.latestPendingTime,a=e.latestSuspendedTime,l=e.latestPingedTime,0!==i&&i<r||0!==a&&a<r||0!==l&&l<r)return cn(e,r),void Na(e,n,r,e.expirationTime,-1);if(!e.didError&&t)return e.didError=!0,r=e.nextExpirationTimeToWorkOn=r,t=e.expirationTime=1073741823,void Na(e,n,r,t,-1)}t&&-1!==Fi?(cn(e,r),(t=10*(1073741822-fn(e,r)))<Fi&&(Fi=t),t=10*(1073741822-Ia()),t=Fi-t,Na(e,n,r,e.expirationTime,0>t?0:t)):(e.pendingCommitExpirationTime=r,e.finishedWork=n)}}function ia(e,t){for(var n=e.return;null!==n;){switch(n.tag){case 1:var r=n.stateNode;if("function"==typeof n.type.getDerivedStateFromError||"function"==typeof r.componentDidCatch&&(null===Xi||!Xi.has(r)))return oi(n,e=Ui(n,e=mi(t,e),1073741823)),void sa(n,1073741823);break;case 3:return oi(n,e=zi(n,e=mi(t,e),1073741823)),void sa(n,1073741823)}n=n.return}3===e.tag&&(oi(e,n=zi(e,n=mi(t,e),1073741823)),sa(e,1073741823))}function aa(e,t){var n=h.unstable_getCurrentPriorityLevel(),r=void 0;if(0==(1&t.mode))r=1073741823;else if(Mi&&!Qi)r=ji;else{switch(n){case h.unstable_ImmediatePriority:r=1073741823;break;case h.unstable_UserBlockingPriority:r=1073741822-10*(1+((1073741822-e+15)/10|0));break;case h.unstable_NormalPriority:r=1073741822-25*(1+((1073741822-e+500)/25|0));break;case h.unstable_LowPriority:case h.unstable_IdlePriority:r=1;break;default:v(!1,"Unknown priority level. 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+__d(function(g,r,i,a,m,e,d){'use strict';function t(t){switch(t){case.75:return'ldpi';case 1:return'mdpi';case 1.5:return'hdpi';case 2:return'xhdpi';case 3:return'xxhdpi';case 4:return'xxxhdpi'}throw new Error('no such scale')}var n=new Set(['gif','jpeg','jpg','png','svg','webp','xml']);function s(t){var n=t.httpServerLocation;return'/'===n[0]&&(n=n.substr(1)),n}m.exports={getAndroidAssetSuffix:t,getAndroidResourceFolderName:function(s,o){if(!n.has(s.type))return'raw';var u=t(o);if(!u)throw new Error("Don't know which android drawable suffix to use for asset: "+JSON.stringify(s));return'drawable-'+u},getAndroidResourceIdentifier:function(t){return(s(t)+'/'+t.name).toLowerCase().replace(/\//g,'_').replace(/([^a-z0-9_])/g,'').replace(/^assets_/,'')},getBasePath:s}},171,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]);var f=n.create({container:{alignItems:'center',justifyContent:'center',backgroundColor:'rgba(0,0,0, 0.25)',position:'absolute',top:0,right:0,padding:2},text:{fontSize:6,color:'#ffffff'}});m.exports=function(){return t.createElement(c,{style:f.container},t.createElement(o,{style:f.text},"FABRIC"))}},172,[139,140,173,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),p=r(d[6]),c=r(d[7]),h=r(d[8]),f=r(d[9]),R=r(d[10]),H=r(d[11]),v=r(d[12]),T=r(d[13]),b=r(d[14]),S=r(d[15]),x=r(d[16]),C={top:20,left:20,right:20,bottom:30},P={validAttributes:c({},R.UIView,{isHighlighted:!0,numberOfLines:!0,ellipsizeMode:!0,allowFontScaling:!0,maxFontSizeMultiplier:!0,disabled:!0,selectable:!0,selectionColor:!0,adjustsFontSizeToFit:!0,minimumFontScale:!0,textBreakStrategy:!0,onTextLayout:!0}),directEventTypes:{topTextLayout:{registrationName:'onTextLayout'}},uiViewClassName:'RCTText'},w=(function(h){function R(){var n,o;t(this,R);for(var p=arguments.length,h=new Array(p),f=0;f<p;f++)h[f]=arguments[f];return(o=s(this,(n=l(R)).call.apply(n,[this].concat(h)))).state=c({},v.Mixin.touchableGetInitialState(),{isHighlighted:!1,createResponderHandlers:o._createResponseHandlers.bind(u(o)),responseHandlers:null}),o}return p(R,h),o(R,[{key:"render",value:function(){var t=this.props;return y(t)&&(t=c({},t,this.state.responseHandlers,{isHighlighted:this.state.isHighlighted})),null!=t.selectionColor&&(t=c({},t,{selectionColor:x(t.selectionColor)})),f.createElement(H.Consumer,null,function(o){return o?f.createElement(V,n({},t,{ref:t.forwardedRef})):f.createElement(H.Provider,{value:!0},f.createElement(M,n({},t,{ref:t.forwardedRef})))})}},{key:"_createResponseHandlers",value:function(){var n=this;return{onStartShouldSetResponder:function(){var t=n.props.onStartShouldSetResponder,o=null!=t&&t()||y(n.props);return o&&n._attachTouchHandlers(),o},onResponderGrant:function(t,o){S(n.touchableHandleResponderGrant)(t,o),null!=n.props.onResponderGrant&&n.props.onResponderGrant.call(n,t,o)},onResponderMove:function(t){S(n.touchableHandleResponderMove)(t),null!=n.props.onResponderMove&&n.props.onResponderMove.call(n,t)},onResponderRelease:function(t){S(n.touchableHandleResponderRelease)(t),null!=n.props.onResponderRelease&&n.props.onResponderRelease.call(n,t)},onResponderTerminate:function(t){S(n.touchableHandleResponderTerminate)(t),null!=n.props.onResponderTerminate&&n.props.onResponderTerminate.call(n,t)},onResponderTerminationRequest:function(){var t=n.props.onResponderTerminationRequest;return!!S(n.touchableHandleResponderTerminationRequest)()&&(null==t||t())}}}},{key:"_attachTouchHandlers",value:function(){var n=this;if(null==this.touchableGetPressRectOffset){for(var t in v.Mixin)'function'==typeof v.Mixin[t]&&(this[t]=v.Mixin[t].bind(this));this.touchableHandleActivePressIn=function(){!n.props.suppressHighlighting&&y(n.props)&&n.setState({isHighlighted:!0})},this.touchableHandleActivePressOut=function(){!n.props.suppressHighlighting&&y(n.props)&&n.setState({isHighlighted:!1})},this.touchableHandlePress=function(t){null!=n.props.onPress&&n.props.onPress(t)},this.touchableHandleLongPress=function(t){null!=n.props.onLongPress&&n.props.onLongPress(t)},this.touchableGetPressRectOffset=function(){return null==n.props.pressRetentionOffset?C:n.props.pressRetentionOffset}}}}],[{key:"getDerivedStateFromProps",value:function(n,t){return null==t.responseHandlers&&y(n)?{responseHandlers:t.createResponderHandlers()}:null}}]),R})(f.Component);w.defaultProps={accessible:!0,allowFontScaling:!0,ellipsizeMode:'tail'},w.viewConfig=P;var y=function(n){return null!=n.onPress||null!=n.onLongPress||null!=n.onStartShouldSetResponder},M=b(P.uiViewClassName,function(){return P}),V=null==T.getViewManagerConfig('RCTVirtualText')?M:b('RCTVirtualText',function(){return{validAttributes:c({},R.UIView,{isHighlighted:!0,maxFontSizeMultiplier:!0}),uiViewClassName:'RCTVirtualText'}}),F=f.forwardRef(function(t,o){return f.createElement(w,n({},t,{forwardedRef:o}))});F.displayName='Text',F.propTypes=h,m.exports=F},173,[41,1,2,3,6,5,7,10,174,139,181,160,182,122,163,189,154]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),t=r(d[2]),l=r(d[3]),s=t(r(d[4]));m.exports={ellipsizeMode:l.oneOf(['head','middle','tail','clip']),numberOfLines:l.number,textBreakStrategy:l.oneOf(['simple','highQuality','balanced']),onLayout:l.func,onPress:l.func,onLongPress:l.func,pressRetentionOffset:n,selectable:l.bool,selectionColor:o,suppressHighlighting:l.bool,style:s,testID:l.string,nativeID:l.string,allowFontScaling:l.bool,maxFontSizeMultiplier:l.number,accessible:l.bool,adjustsFontSizeToFit:l.bool,minimumFontScale:l.number,disabled:l.bool}},174,[146,175,176,136,152]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=t.shape({top:t.number,left:t.number,bottom:t.number,right:t.number});m.exports=n},175,[136]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]);m.exports=function(o){var c=n(o);return function(n,o,u,v){var f=n;n[o]&&((f={})[o]=t(n[o]));for(var p=arguments.length,s=new Array(p>4?p-4:0),l=4;l<p;l++)s[l-4]=arguments[l];return c.apply(void 0,[f,o,u,v].concat(s))}}},176,[177,129]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]);m.exports=function(o){function l(l,c,s,u,p){if(c[s]){var f=c[s],y=typeof f;'object'!==y&&n(!1,"Invalid "+(p||'(unknown)')+" `"+s+"` of type `"+y+"` supplied to `"+u+"`, expected `object`.");for(var v=t(c[s],o),b=arguments.length,j=new Array(b>5?b-5:0),k=5;k<b;k++)j[k-5]=arguments[k];for(var w in v){var O=o[w];O||n(!1,"Invalid props."+s+" key `"+w+"` supplied to `"+u+"`.\nBad object: "+JSON.stringify(c[s],null,'  ')+'\nValid keys: '+JSON.stringify(Object.keys(o),null,'  '));var J=O.apply(void 0,[f,w,u,p].concat(j));J&&n(!1,J.message+'\nBad object: '+JSON.stringify(c[s],null,'  '))}}else l&&n(!1,"Required object `"+s+"` was not specified in `"+u+"`.")}function c(n,t,o,c){for(var s=arguments.length,u=new Array(s>4?s-4:0),p=4;p<s;p++)u[p-4]=arguments[p];return l.apply(void 0,[!1,n,t,o,c].concat(u))}return c.isRequired=l.bind(null,!0),c}},177,[20,178]);
+__d(function(g,r,i,a,m,e,d){"use strict";var t=r(d[0]);m.exports=function(n,u){var c={};return t(c,n),t(c,u),c}},178,[179]);
+__d(function(g,r,i,a,m,e,d){"use strict";var t=r(d[0]),c=t.checkMergeObjectArg,n=t.checkMergeIntoObjectArg;m.exports=function(t,o){if(n(t),null!=o)for(var f in c(o),o)Object.prototype.hasOwnProperty.call(o,f)&&(t[f]=o[f])}},179,[180]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=function(t){return'object'!=typeof t||t instanceof Date||null===t},c={MAX_MERGE_DEPTH:36,isTerminal:n,normalizeMergeArg:function(t){return void 0===t||null===t?{}:t},checkMergeArrayArgs:function(n,c){t(Array.isArray(n)&&Array.isArray(c),'Tried to merge arrays, instead got %s and %s.',n,c)},checkMergeObjectArgs:function(t,n){c.checkMergeObjectArg(t),c.checkMergeObjectArg(n)},checkMergeObjectArg:function(c){t(!n(c)&&!Array.isArray(c),'Tried to merge an object, instead got %s.',c)},checkMergeIntoObjectArg:function(c){t(!(n(c)&&'function'!=typeof c||Array.isArray(c)),'Tried to merge into an object, instead got %s.',c)},checkMergeLevel:function(n){t(n<36,"Maximum deep merge depth exceeded. You may be attempting to merge circular structures in an unsupported way.")},checkArrayStrategy:function(n){t(void 0===n||n in c.ArrayStrategies,"You must provide an array strategy to deep merge functions to instruct the deep merge how to resolve merging two arrays.")},ArrayStrategies:{Clobber:'Clobber',Concat:'Concat',IndexByIndex:'IndexByIndex'}};m.exports=c},180,[20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=r(d[1]),c={};c.UIView={pointerEvents:!0,accessible:!0,accessibilityActions:!0,accessibilityLabel:!0,accessibilityHint:!0,accessibilityComponentType:!0,accessibilityLiveRegion:!0,accessibilityRole:!0,accessibilityStates:!0,accessibilityTraits:!0,acceptsKeyboardFocus:!0,enableFocusRing:!0,importantForAccessibility:!0,nativeID:!0,testID:!0,renderToHardwareTextureAndroid:!0,shouldRasterizeIOS:!0,onLayout:!0,onAccessibilityAction:!0,onAccessibilityTap:!0,onMagicTap:!0,collapsable:!0,needsOffscreenAlphaCompositing:!0,onMouseEnter:!0,onMouseLeave:!0,onDragEnter:!0,onDragLeave:!0,onDrop:!0,draggedTypes:!0,style:t},c.RCTView=s({},c.UIView,{removeClippedSubviews:!0}),m.exports=c},181,[10,144]);
+__d(function(g,r,i,a,m,e,d){'use strict';var E=r(d[0]),t=r(d[1]),R=r(d[2]),_=r(d[3]),s=(r(d[4]),r(d[5])),S=r(d[6]),o=r(d[7]),n=r(d[8]),l=r(d[9]),N=(r(d[10]),r(d[11])),T=(r(d[12]),N({NOT_RESPONDER:null,RESPONDER_INACTIVE_PRESS_IN:null,RESPONDER_INACTIVE_PRESS_OUT:null,RESPONDER_ACTIVE_PRESS_IN:null,RESPONDER_ACTIVE_PRESS_OUT:null,RESPONDER_ACTIVE_LONG_PRESS_IN:null,RESPONDER_ACTIVE_LONG_PRESS_OUT:null,ERROR:null})),h={NOT_RESPONDER:!1,RESPONDER_INACTIVE_PRESS_IN:!1,RESPONDER_INACTIVE_PRESS_OUT:!1,RESPONDER_ACTIVE_PRESS_IN:!1,RESPONDER_ACTIVE_PRESS_OUT:!1,RESPONDER_ACTIVE_LONG_PRESS_IN:!1,RESPONDER_ACTIVE_LONG_PRESS_OUT:!1,ERROR:!1},P=E({},h,{RESPONDER_ACTIVE_PRESS_OUT:!0,RESPONDER_ACTIVE_PRESS_IN:!0}),O=E({},h,{RESPONDER_INACTIVE_PRESS_IN:!0,RESPONDER_ACTIVE_PRESS_IN:!0,RESPONDER_ACTIVE_LONG_PRESS_IN:!0}),u=E({},h,{RESPONDER_ACTIVE_LONG_PRESS_IN:!0}),D=N({DELAY:null,RESPONDER_GRANT:null,RESPONDER_RELEASE:null,RESPONDER_TERMINATED:null,ENTER_PRESS_RECT:null,LEAVE_PRESS_RECT:null,LONG_PRESS_DETECTED:null}),c={NOT_RESPONDER:{DELAY:T.ERROR,RESPONDER_GRANT:T.RESPONDER_INACTIVE_PRESS_IN,RESPONDER_RELEASE:T.ERROR,RESPONDER_TERMINATED:T.ERROR,ENTER_PRESS_RECT:T.ERROR,LEAVE_PRESS_RECT:T.ERROR,LONG_PRESS_DETECTED:T.ERROR},RESPONDER_INACTIVE_PRESS_IN:{DELAY:T.RESPONDER_ACTIVE_PRESS_IN,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_INACTIVE_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_INACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:T.ERROR},RESPONDER_INACTIVE_PRESS_OUT:{DELAY:T.RESPONDER_ACTIVE_PRESS_OUT,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_INACTIVE_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_INACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:T.ERROR},RESPONDER_ACTIVE_PRESS_IN:{DELAY:T.ERROR,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_ACTIVE_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_ACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:T.RESPONDER_ACTIVE_LONG_PRESS_IN},RESPONDER_ACTIVE_PRESS_OUT:{DELAY:T.ERROR,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_ACTIVE_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_ACTIVE_PRESS_OUT,LONG_PRESS_DETECTED:T.ERROR},RESPONDER_ACTIVE_LONG_PRESS_IN:{DELAY:T.ERROR,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_ACTIVE_LONG_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_ACTIVE_LONG_PRESS_OUT,LONG_PRESS_DETECTED:T.RESPONDER_ACTIVE_LONG_PRESS_IN},RESPONDER_ACTIVE_LONG_PRESS_OUT:{DELAY:T.ERROR,RESPONDER_GRANT:T.ERROR,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.RESPONDER_ACTIVE_LONG_PRESS_IN,LEAVE_PRESS_RECT:T.RESPONDER_ACTIVE_LONG_PRESS_OUT,LONG_PRESS_DETECTED:T.ERROR},error:{DELAY:T.NOT_RESPONDER,RESPONDER_GRANT:T.RESPONDER_INACTIVE_PRESS_IN,RESPONDER_RELEASE:T.NOT_RESPONDER,RESPONDER_TERMINATED:T.NOT_RESPONDER,ENTER_PRESS_RECT:T.NOT_RESPONDER,LEAVE_PRESS_RECT:T.NOT_RESPONDER,LONG_PRESS_DETECTED:T.NOT_RESPONDER}},A={Mixin:{componentDidMount:function(){R.isTV&&(this._tvEventHandler=new o,this._tvEventHandler.enable(this,function(E,t){var R=s.findNodeHandle(E);t.dispatchConfig={},R===t.tag&&('focus'===t.eventType?E.touchableHandleFocus(t):'blur'===t.eventType?E.touchableHandleBlur(t):'select'===t.eventType&&E.touchableHandlePress&&!E.props.disabled&&E.touchableHandlePress(t))}))},componentWillUnmount:function(){this._tvEventHandler&&(this._tvEventHandler.disable(),delete this._tvEventHandler),this.touchableDelayTimeout&&clearTimeout(this.touchableDelayTimeout),this.longPressDelayTimeout&&clearTimeout(this.longPressDelayTimeout),this.pressOutDelayTimeout&&clearTimeout(this.pressOutDelayTimeout)},touchableGetInitialState:function(){return{touchable:{touchState:void 0,responderID:null}}},touchableHandleResponderTerminationRequest:function(){return!this.props.rejectResponderTermination},touchableHandleStartShouldSetResponder:function(){return!this.props.disabled},touchableLongPressCancelsPress:function(){return!0},touchableHandleResponderGrant:function(E){var t=E.currentTarget;E.persist(),this.pressOutDelayTimeout&&clearTimeout(this.pressOutDelayTimeout),this.pressOutDelayTimeout=null,this.state.touchable.touchState=T.NOT_RESPONDER,this.state.touchable.responderID=t,this._receiveSignal(D.RESPONDER_GRANT,E);var R=void 0!==this.touchableGetHighlightDelayMS?Math.max(this.touchableGetHighlightDelayMS(),0):130;0!==(R=isNaN(R)?130:R)?this.touchableDelayTimeout=setTimeout(this._handleDelay.bind(this,E),R):this._handleDelay(E);var _=void 0!==this.touchableGetLongPressDelayMS?Math.max(this.touchableGetLongPressDelayMS(),10):370;_=isNaN(_)?370:_,this.longPressDelayTimeout=setTimeout(this._handleLongDelay.bind(this,E),_+R)},touchableHandleResponderRelease:function(E){this._receiveSignal(D.RESPONDER_RELEASE,E)},touchableHandleResponderTerminate:function(E){this._receiveSignal(D.RESPONDER_TERMINATED,E)},touchableHandleResponderMove:function(E){if(this.state.touchable.touchState!==T.RESPONDER_INACTIVE_PRESS_IN&&this.state.touchable.positionOnActivate){var t=this.state.touchable.positionOnActivate,R=this.state.touchable.dimensionsOnActivate,_=this.touchableGetPressRectOffset?this.touchableGetPressRectOffset():{left:20,right:20,top:20,bottom:20},s=_.left,S=_.top,o=_.right,l=_.bottom,N=this.touchableGetHitSlop?this.touchableGetHitSlop():null;N&&(s+=N.left,S+=N.top,o+=N.right,l+=N.bottom);var h=n.extractSingleTouch(E.nativeEvent),P=h&&h.pageX,O=h&&h.pageY;if(this.pressInLocation)this._getDistanceBetweenPoints(P,O,this.pressInLocation.pageX,this.pressInLocation.pageY)>10&&this._cancelLongPressDelayTimeout();if(P>t.left-s&&O>t.top-S&&P<t.left+R.width+o&&O<t.top+R.height+l)this._receiveSignal(D.ENTER_PRESS_RECT,E),this.state.touchable.touchState===T.RESPONDER_INACTIVE_PRESS_IN&&this._cancelLongPressDelayTimeout();else this._cancelLongPressDelayTimeout(),this._receiveSignal(D.LEAVE_PRESS_RECT,E)}},touchableHandleFocus:function(E){this.props.onFocus&&this.props.onFocus(E)},touchableHandleBlur:function(E){this.props.onBlur&&this.props.onBlur(E)},_remeasureMetricsOnActivation:function(){var E=this.state.touchable.responderID;null!=E&&l.measure(E,this._handleQueryLayout)},_handleQueryLayout:function(E,R,s,S,o,n){(E||R||s||S||o||n)&&(this.state.touchable.positionOnActivate&&_.release(this.state.touchable.positionOnActivate),this.state.touchable.dimensionsOnActivate&&t.release(this.state.touchable.dimensionsOnActivate),this.state.touchable.positionOnActivate=_.getPooled(o,n),this.state.touchable.dimensionsOnActivate=t.getPooled(s,S))},_handleDelay:function(E){this.touchableDelayTimeout=null,this._receiveSignal(D.DELAY,E)},_handleLongDelay:function(E){this.longPressDelayTimeout=null;var t=this.state.touchable.touchState;t!==T.RESPONDER_ACTIVE_PRESS_IN&&t!==T.RESPONDER_ACTIVE_LONG_PRESS_IN?console.error('Attempted to transition from state `'+t+'` to `'+T.RESPONDER_ACTIVE_LONG_PRESS_IN+"`, which is not supported. This is most likely due to `Touchable.longPressDelayTimeout` not being cancelled."):this._receiveSignal(D.LONG_PRESS_DETECTED,E)},_receiveSignal:function(E,t){var R=this.state.touchable.responderID,_=this.state.touchable.touchState,s=c[_]&&c[_][E];if(R||E!==D.RESPONDER_RELEASE){if(!s)throw new Error('Unrecognized signal `'+E+'` or state `'+_+'` for Touchable responder `'+R+'`');if(s===T.ERROR)throw new Error('Touchable cannot transition from `'+_+'` to `'+E+'` for responder `'+R+'`');_!==s&&(this._performSideEffectsForTransition(_,s,E,t),this.state.touchable.touchState=s)}},_cancelLongPressDelayTimeout:function(){this.longPressDelayTimeout&&clearTimeout(this.longPressDelayTimeout),this.longPressDelayTimeout=null},_isHighlight:function(E){return E===T.RESPONDER_ACTIVE_PRESS_IN||E===T.RESPONDER_ACTIVE_LONG_PRESS_IN},_savePressInLocation:function(E){var t=n.extractSingleTouch(E.nativeEvent),R=t&&t.pageX,_=t&&t.pageY,s=t&&t.locationX,S=t&&t.locationY;this.pressInLocation={pageX:R,pageY:_,locationX:s,locationY:S}},_getDistanceBetweenPoints:function(E,t,R,_){var s=E-R,S=t-_;return Math.sqrt(s*s+S*S)},_performSideEffectsForTransition:function(E,t,R,_){var s=this._isHighlight(E),S=this._isHighlight(t);if((R===D.RESPONDER_TERMINATED||R===D.RESPONDER_RELEASE)&&this._cancelLongPressDelayTimeout(),!P[E]&&P[t]&&this._remeasureMetricsOnActivation(),O[E]&&R===D.LONG_PRESS_DETECTED&&this.touchableHandleLongPress&&this.touchableHandleLongPress(_),S&&!s?this._startHighlight(_):!S&&s&&this._endHighlight(_),O[E]&&R===D.RESPONDER_RELEASE){var o=!!this.props.onLongPress,n=u[E]&&(!o||!this.touchableLongPressCancelsPress());(!u[E]||n)&&this.touchableHandlePress&&(S||s||(this._startHighlight(_),this._endHighlight(_)),this._playTouchSound(),this.touchableHandlePress(_))}this.touchableDelayTimeout&&clearTimeout(this.touchableDelayTimeout),this.touchableDelayTimeout=null},_playTouchSound:function(){l.playTouchSound()},_startHighlight:function(E){this._savePressInLocation(E),this.touchableHandleActivePressIn&&this.touchableHandleActivePressIn(E)},_endHighlight:function(E){var t=this;this.touchableHandleActivePressOut&&(this.touchableGetPressOutDelayMS&&this.touchableGetPressOutDelayMS()?this.pressOutDelayTimeout=setTimeout(function(){t.touchableHandleActivePressOut(E)},this.touchableGetPressOutDelayMS()):this.touchableHandleActivePressOut(E))}},TOUCH_TARGET_DEBUG:!1,renderDebugView:function(E){E.color,E.hitSlop;if(!A.TOUCH_TARGET_DEBUG)return null;throw Error('Touchable.TOUCH_TARGET_DEBUG should not be enabled in prod!')}};S.create({debug:{position:'absolute',borderWidth:1,borderStyle:'dashed'}});m.exports=A},182,[10,183,74,185,139,43,140,186,187,122,159,188,147]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=t.twoArgumentPooler;function n(t,o){this.width=t,this.height=o}n.prototype.destructor=function(){this.width=null,this.height=null},n.getPooledFromElement=function(t){return n.getPooled(t.offsetWidth,t.offsetHeight)},t.addPoolingTo(n,o),m.exports=n},183,[184]);
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+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=t.twoArgumentPooler;function n(t,o){this.left=t,this.top=o}n.prototype.destructor=function(){this.left=null,this.top=null},t.addPoolingTo(n,o),m.exports=n},185,[184]);
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l.componentDidUpdate||o===e.memoizedProps&&u===e.memoizedState||(t.effectTag|=4),"function"!=typeof l.getSnapshotBeforeUpdate||o===e.memoizedProps&&u===e.memoizedState||(t.effectTag|=256),r=!1);return Ir(e,t,n,r,a,i)}function Ir(e,t,n,r,i,a){Nr(e,t);var l=0!=(64&t.effectTag);if(!r&&!l)return i&&Ft(t,n,!1),Mr(e,t,a);r=t.stateNode,Pr.current=t;var o=l&&"function"!=typeof n.getDerivedStateFromError?null:r.render();return t.effectTag|=1,null!==e&&l?(t.child=kn(t,e.child,null,a),t.child=kn(t,null,o,a)):Cr(e,t,o,a),t.memoizedState=r.state,i&&Ft(t,n,!0),t.child}function Ar(e){var t=e.stateNode;t.pendingContext?Wt(0,t.pendingContext,t.pendingContext!==t.context):t.context&&Wt(0,t.context,!1),Nn(e,t.containerInfo)}function Dr(e,t,n){var r=t.mode,i=t.pendingProps,a=t.memoizedState;if(0==(64&t.effectTag)){a=null;var l=!1}else a={timedOutAt:null!==a?a.timedOutAt:0},l=!0,t.effectTag&=-65;if(null===e)if(l){var o=i.fallback;e=Jt(null,r,0,null),0==(1&t.mode)&&(e.child=null!==t.memoizedState?t.child.child:t.child),r=Jt(o,r,n,null),e.sibling=r,(n=e).return=r.return=t}else n=r=Pn(t,null,i.children,n);else null!==e.memoizedState?(o=(r=e.child).sibling,l?(n=i.fallback,i=qt(r,r.pendingProps),0==(1&t.mode)&&((l=null!==t.memoizedState?t.child.child:t.child)!==r.child&&(i.child=l)),r=i.sibling=qt(o,n,o.expirationTime),n=i,i.childExpirationTime=0,n.return=r.return=t):n=r=kn(t,r.child,i.children,n)):(o=e.child,l?(l=i.fallback,(i=Jt(null,r,0,null)).child=o,0==(1&t.mode)&&(i.child=null!==t.memoizedState?t.child.child:t.child),(r=i.sibling=Jt(l,r,n,null)).effectTag|=2,n=i,i.childExpirationTime=0,n.return=r.return=t):r=n=kn(t,o,i.children,n)),t.stateNode=e.stateNode;return t.memoizedState=a,t.child=n,r}function Mr(e,t,n){if(null!==e&&(t.contextDependencies=e.contextDependencies),t.childExpirationTime<n)return null;if(y(null===e||t.child===e.child,"Resuming work not yet implemented."),null!==t.child){for(n=qt(e=t.child,e.pendingProps,e.expirationTime),t.child=n,n.return=t;null!==e.sibling;)e=e.sibling,(n=n.sibling=qt(e,e.pendingProps,e.expirationTime)).return=t;n.sibling=null}return t.child}function Wr(e,t,n){var r=t.expirationTime;if(null!==e){if(e.memoizedProps!==t.pendingProps||zt.current)Er=!0;else if(r<n){switch(Er=!1,t.tag){case 3:Ar(t);break;case 5:Un(t);break;case 1:At(t.type)&&jt(t);break;case 4:Nn(t,t.stateNode.containerInfo);break;case 10:Br(t,t.memoizedProps.value);break;case 13:if(null!==t.memoizedState)return 0!==(r=t.child.childExpirationTime)&&r>=n?Dr(e,t,n):null!==(t=Mr(e,t,n))?t.sibling:null}return Mr(e,t,n)}}else Er=!1;switch(t.expirationTime=0,t.tag){case 2:r=t.elementType,null!==e&&(e.alternate=null,t.alternate=null,t.effectTag|=2),e=t.pendingProps;var i=It(t,Nt.current);if(Qr(t,n),i=ir(null,t,r,e,i,n),t.effectTag|=1,"object"==typeof i&&null!==i&&"function"==typeof i.render&&void 0===i.$$typeof){if(t.tag=1,ar(),At(r)){var a=!0;jt(t)}else a=!1;t.memoizedState=null!==i.state&&void 0!==i.state?i.state:null;var l=r.getDerivedStateFromProps;"function"==typeof l&&pn(t,r,l,e),i.updater=mn,t.stateNode=i,i._reactInternalFiber=t,vn(t,r,e,n),t=Ir(null,t,r,!0,a,n)}else t.tag=0,Cr(null,t,i,n),t=t.child;return t;case 16:switch(i=t.elementType,null!==e&&(e.alternate=null,t.alternate=null,t.effectTag|=2),a=t.pendingProps,e=fn(i),t.type=e,i=t.tag=$t(e),a=cn(e,a),l=void 0,i){case 0:l=zr(null,t,e,a,n);break;case 1:l=Ur(null,t,e,a,n);break;case 11:l=wr(null,t,e,a,n);break;case 14:l=Rr(null,t,e,cn(e.type,a),r,n);break;default:y(!1,"Element type is invalid. Received a promise that resolves to: %s. Lazy element type must resolve to a class or function.%s",e,"")}return l;case 0:return r=t.type,i=t.pendingProps,zr(e,t,r,i=t.elementType===r?i:cn(r,i),n);case 1:return r=t.type,i=t.pendingProps,Ur(e,t,r,i=t.elementType===r?i:cn(r,i),n);case 3:return Ar(t),y(null!==(r=t.updateQueue),"If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue."),i=null!==(i=t.memoizedState)?i.element:null,ai(t,r,t.pendingProps,null,n),(r=t.memoizedState.element)===i?t=Mr(e,t,n):(Cr(e,t,r,n),t=t.child),t;case 5:return Un(t),null===e&&kr(t),r=t.pendingProps.children,Nr(e,t),Cr(e,t,r,n),t=t.child;case 6:return null===e&&kr(t),null;case 13:return Dr(e,t,n);case 4:return Nn(t,t.stateNode.containerInfo),r=t.pendingProps,null===e?t.child=kn(t,null,r,n):Cr(e,t,r,n),t.child;case 11:return r=t.type,i=t.pendingProps,wr(e,t,r,i=t.elementType===r?i:cn(r,i),n);case 7:return Cr(e,t,t.pendingProps,n),t.child;case 8:case 12:return Cr(e,t,t.pendingProps.children,n),t.child;case 10:e:{if(r=t.type._context,i=t.pendingProps,l=t.memoizedProps,Br(t,a=i.value),null!==l){var o=l.value;if(0===(a=on(o,a)?0:0|("function"==typeof r._calculateChangedBits?r._calculateChangedBits(o,a):1073741823))){if(l.children===i.children&&!zt.current){t=Mr(e,t,n);break e}}else for(null!==(o=t.child)&&(o.return=t);null!==o;){var u=o.contextDependencies;if(null!==u){l=o.child;for(var s=u.first;null!==s;){if(s.context===r&&0!=(s.observedBits&a)){1===o.tag&&((s=Zr(n)).tag=$r,ti(o,s)),o.expirationTime<n&&(o.expirationTime=n),null!==(s=o.alternate)&&s.expirationTime<n&&(s.expirationTime=n),s=n;for(var c=o.return;null!==c;){var f=c.alternate;if(c.childExpirationTime<s)c.childExpirationTime=s,null!==f&&f.childExpirationTime<s&&(f.childExpirationTime=s);else{if(!(null!==f&&f.childExpirationTime<s))break;f.childExpirationTime=s}c=c.return}u.expirationTime<n&&(u.expirationTime=n);break}s=s.next}}else l=10===o.tag&&o.type===t.type?null:o.child;if(null!==l)l.return=o;else for(l=o;null!==l;){if(l===t){l=null;break}if(null!==(o=l.sibling)){o.return=l.return,l=o;break}l=l.return}o=l}}Cr(e,t,i.children,n),t=t.child}return t;case 9:return i=t.type,r=(a=t.pendingProps).children,Qr(t,n),r=r(i=Vr(i,a.unstable_observedBits)),t.effectTag|=1,Cr(e,t,r,n),t.child;case 14:return a=cn(i=t.type,t.pendingProps),Rr(e,t,i,a=cn(i.type,a),r,n);case 15:return _r(e,t,t.type,t.pendingProps,r,n);case 17:return r=t.type,i=t.pendingProps,i=t.elementType===r?i:cn(r,i),null!==e&&(e.alternate=null,t.alternate=null,t.effectTag|=2),t.tag=1,At(r)?(e=!0,jt(t)):e=!1,Qr(t,n),gn(t,r,i),vn(t,r,i,n),Ir(null,t,r,!0,e,n)}y(!1,"Unknown unit of work tag. This error is likely caused by a bug in React. Please file an issue.")}var Or={current:null},jr=null,Fr=null,Hr=null;function Br(e,t){var n=e.type._context;Rt(Or,n._currentValue2),n._currentValue2=t}function Lr(e){var t=Or.current;wt(Or),e.type._context._currentValue2=t}function Qr(e,t){jr=e,Hr=Fr=null;var n=e.contextDependencies;null!==n&&n.expirationTime>=t&&(Er=!0),e.contextDependencies=null}function Vr(e,t){return Hr!==e&&!1!==t&&0!==t&&("number"==typeof t&&1073741823!==t||(Hr=e,t=1073741823),t={context:e,observedBits:t,next:null},null===Fr?(y(null!==jr,"Context can only be read while React is rendering. In classes, you can read it in the render method or getDerivedStateFromProps. 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+__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=r(d[1]),o=r(d[2]),n=r(d[3]),l=r(d[4]),p=r(d[5]),h=r(d[6]),c=r(d[7]),u=r(d[8]),y=r(d[9]),b=r(d[10]),P=r(d[11]),S=r(d[12]),f=r(d[13]),T={activeOpacity:.85,delayPressOut:100,underlayColor:'black'},_={top:20,left:20,right:20,bottom:30},R=S({displayName:'TouchableHighlight',propTypes:s({},b.propTypes,{activeOpacity:p.number,underlayColor:t,style:o.style,onShowUnderlay:p.func,onHideUnderlay:p.func,hasTVPreferredFocus:p.bool,tvParallaxProperties:p.object,testOnly_pressed:p.bool}),mixins:[n,y.Mixin],getDefaultProps:function(){return T},getInitialState:function(){return this._isMounted=!1,this.props.testOnly_pressed?s({},this.touchableGetInitialState(),{extraChildStyle:{opacity:this.props.activeOpacity},extraUnderlayStyle:{backgroundColor:this.props.underlayColor}}):s({},this.touchableGetInitialState(),{extraChildStyle:null,extraUnderlayStyle:null})},componentDidMount:function(){this._isMounted=!0,f(this.props)},componentWillUnmount:function(){this._isMounted=!1,clearTimeout(this._hideTimeout)},UNSAFE_componentWillReceiveProps:function(s){f(s)},viewConfig:{uiViewClassName:'RCTView',validAttributes:c.RCTView},touchableHandleActivePressIn:function(s){clearTimeout(this._hideTimeout),this._hideTimeout=null,this._showUnderlay(),this.props.onPressIn&&this.props.onPressIn(s)},touchableHandleActivePressOut:function(s){this._hideTimeout||this._hideUnderlay(),this.props.onPressOut&&this.props.onPressOut(s)},touchableHandlePress:function(s){clearTimeout(this._hideTimeout),l.isTV||(this._showUnderlay(),this._hideTimeout=setTimeout(this._hideUnderlay,this.props.delayPressOut)),this.props.onPress&&this.props.onPress(s)},touchableHandleLongPress:function(s){this.props.onLongPress&&this.props.onLongPress(s)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||_},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn},touchableGetLongPressDelayMS:function(){return this.props.delayLongPress},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut},_showUnderlay:function(){this._isMounted&&this._hasPressHandler()&&(this.setState({extraChildStyle:{opacity:this.props.activeOpacity},extraUnderlayStyle:{backgroundColor:this.props.underlayColor}}),this.props.onShowUnderlay&&this.props.onShowUnderlay())},_hideUnderlay:function(){clearTimeout(this._hideTimeout),this._hideTimeout=null,this.props.testOnly_pressed||this._hasPressHandler()&&(this.setState({extraChildStyle:null,extraUnderlayStyle:null}),this.props.onHideUnderlay&&this.props.onHideUnderlay())},_hasPressHandler:function(){return!!(this.props.onPress||this.props.onPressIn||this.props.onPressOut||this.props.onLongPress)},render:function(){var s=h.Children.only(this.props.children);return h.createElement(P,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:(void 0===this.props.enableFocusRing||this.props.enableFocusRing)&&!this.props.disabled,style:u.compose(this.props.style,this.state.extraUnderlayStyle),onLayout:this.props.onLayout,hitSlop:this.props.hitSlop,isTVSelectable:!0,tvParallaxProperties:this.props.tvParallaxProperties,hasTVPreferredFocus:this.props.hasTVPreferredFocus,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes,nativeID:this.props.nativeID,testID:this.props.testID},h.cloneElement(s,{style:u.compose(s.props.style,this.state.extraChildStyle)}),y.renderDebugView({color:'green',hitSlop:this.props.hitSlop}))}});m.exports=R},213,[10,146,214,217,74,136,139,181,140,182,218,159,219,223]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),s=r(d[2]),t=r(d[3]),c=r(d[4]),l=r(d[5]),b=r(d[6]),p=b.DeprecatedAccessibilityComponentTypes,f=b.DeprecatedAccessibilityTraits,u=b.DeprecatedAccessibilityRoles,y=b.DeprecatedAccessibilityStates,R=c(l);m.exports=o({accessible:t.bool,accessibilityLabel:t.node,accessibilityHint:t.string,accessibilityActions:t.arrayOf(t.string),accessibilityIgnoresInvertColors:t.bool,accessibilityComponentType:t.oneOf(p),accessibilityRole:t.oneOf(u),accessibilityStates:t.arrayOf(t.oneOf(y)),accessibilityLiveRegion:t.oneOf(['none','polite','assertive']),importantForAccessibility:t.oneOf(['auto','yes','no','no-hide-descendants']),accessibilityTraits:t.oneOfType([t.oneOf(f),t.arrayOf(t.oneOf(f))]),accessibilityViewIsModal:t.bool,accessibilityElementsHidden:t.bool,onAccessibilityAction:t.func,onAccessibilityTap:t.func,onMagicTap:t.func,testID:t.string,nativeID:t.string,onResponderGrant:t.func,onResponderMove:t.func,onResponderReject:t.func,onResponderRelease:t.func,onResponderTerminate:t.func,onResponderTerminationRequest:t.func,onStartShouldSetResponder:t.func,onStartShouldSetResponderCapture:t.func,onMoveShouldSetResponder:t.func,onMoveShouldSetResponderCapture:t.func,hitSlop:n,onLayout:t.func,pointerEvents:t.oneOf(['box-none','none','box-only','auto']),style:R,removeClippedSubviews:t.bool,renderToHardwareTextureAndroid:t.bool,shouldRasterizeIOS:t.bool,collapsable:t.bool,needsOffscreenAlphaCompositing:t.bool},s)},214,[10,175,215,136,176,153,216]);
+__d(function(g,r,i,a,m,e,d){'use strict'},215,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports={DeprecatedAccessibilityTraits:['none','button','link','header','search','image','selected','plays','key','text','summary','disabled','frequentUpdates','startsMedia','adjustable','allowsDirectInteraction','pageTurn'],DeprecatedAccessibilityComponentTypes:['none','button','radiobutton_checked','radiobutton_unchecked'],DeprecatedAccessibilityRoles:['none','button','link','search','image','keyboardkey','text','adjustable','imagebutton','header','summary'],DeprecatedAccessibilityStates:['selected','disabled']}},216,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var _=r(d[0]).__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.NativeMethodsMixin;m.exports=_},217,[43]);
+__d(function(g,r,i,a,m,e,d){'use strict';var s=r(d[0]),t=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),c=r(d[5]),l=r(d[6]),u=r(d[7]),h=u.DeprecatedAccessibilityComponentTypes,b=u.DeprecatedAccessibilityRoles,y=u.DeprecatedAccessibilityStates,f=u.DeprecatedAccessibilityTraits,P=r(d[8]).DraggedTypes,R={top:20,left:20,right:20,bottom:30},D=c({displayName:'TouchableWithoutFeedback',mixins:[n.Mixin],propTypes:{accessible:o.bool,accessibilityLabel:o.node,accessibilityHint:o.string,accessibilityComponentType:o.oneOf(h),accessibilityRole:o.oneOf(b),accessibilityStates:o.arrayOf(o.oneOf(y)),accessibilityTraits:o.oneOfType([o.oneOf(f),o.arrayOf(o.oneOf(f))]),onAccessibilityTap:o.func,onFocus:o.func,onBlur:o.func,disabled:o.bool,onMouseEnter:o.func,onMouseLeave:o.func,onDragEnter:o.func,onDragLeave:o.func,onDrop:o.func,draggedTypes:o.oneOfType([o.oneOf(P),o.arrayOf(o.oneOf(P))]),onPress:o.func,onPressIn:o.func,onPressOut:o.func,onLayout:o.func,onLongPress:o.func,nativeID:o.string,testID:o.string,delayPressIn:o.number,delayPressOut:o.number,delayLongPress:o.number,pressRetentionOffset:s,hitSlop:s},getInitialState:function(){return this.touchableGetInitialState()},componentDidMount:function(){l(this.props)},UNSAFE_componentWillReceiveProps:function(s){l(s)},touchableHandlePress:function(s){this.props.onPress&&this.props.onPress(s)},touchableHandleActivePressIn:function(s){this.props.onPressIn&&this.props.onPressIn(s)},touchableHandleActivePressOut:function(s){this.props.onPressOut&&this.props.onPressOut(s)},touchableHandleLongPress:function(s){this.props.onLongPress&&this.props.onLongPress(s)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||R},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn||0},touchableGetLongPressDelayMS:function(){return 0===this.props.delayLongPress?0:this.props.delayLongPress||500},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut||0},render:function(){var s=t.Children.only(this.props.children),o=s.props.children;return n.TOUCH_TARGET_DEBUG&&s.type===p&&(o=t.Children.toArray(o)).push(n.renderDebugView({color:'red',hitSlop:this.props.hitSlop})),t.cloneElement(s,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityComponentType:this.props.accessibilityComponentType,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,accessibilityTraits:this.props.accessibilityTraits,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:!0===this.props.enableFocusRing&&!this.props.disabled,nativeID:this.props.nativeID,testID:this.props.testID,onLayout:this.props.onLayout,hitSlop:this.props.hitSlop,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes,children:o})}});m.exports=D},218,[175,139,136,182,159,219,223,216,224]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]);if(void 0===t)throw Error("create-react-class could not find the React object. If you are using script tags, make sure that React is being loaded before create-react-class.");var c=(new t.Component).updater;m.exports=o(t.Component,t.isValidElement,c)},219,[125,220]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s='mixins';m.exports=function(p,c,u){var l=[],E={mixins:'DEFINE_MANY',statics:'DEFINE_MANY',propTypes:'DEFINE_MANY',contextTypes:'DEFINE_MANY',childContextTypes:'DEFINE_MANY',getDefaultProps:'DEFINE_MANY_MERGED',getInitialState:'DEFINE_MANY_MERGED',getChildContext:'DEFINE_MANY_MERGED',render:'DEFINE_ONCE',componentWillMount:'DEFINE_MANY',componentDidMount:'DEFINE_MANY',componentWillReceiveProps:'DEFINE_MANY',shouldComponentUpdate:'DEFINE_ONCE',componentWillUpdate:'DEFINE_MANY',componentDidUpdate:'DEFINE_MANY',componentWillUnmount:'DEFINE_MANY',UNSAFE_componentWillMount:'DEFINE_MANY',UNSAFE_componentWillReceiveProps:'DEFINE_MANY',UNSAFE_componentWillUpdate:'DEFINE_MANY',updateComponent:'OVERRIDE_BASE'},f={getDerivedStateFromProps:'DEFINE_MANY_MERGED'},h={displayName:function(t,n){t.displayName=n},mixins:function(t,n){if(n)for(var o=0;o<n.length;o++)N(t,n[o])},childContextTypes:function(n,o){n.childContextTypes=t({},n.childContextTypes,o)},contextTypes:function(n,o){n.contextTypes=t({},n.contextTypes,o)},getDefaultProps:function(t,n){t.getDefaultProps?t.getDefaultProps=M(t.getDefaultProps,n):t.getDefaultProps=n},propTypes:function(n,o){n.propTypes=t({},n.propTypes,o)},statics:function(t,n){_(t,n)},autobind:function(){}};function y(t,n){var s=E.hasOwnProperty(n)?E[n]:null;P.hasOwnProperty(n)&&o('OVERRIDE_BASE'===s,"ReactClassInterface: You are attempting to override `%s` from your class specification. Ensure that your method names do not overlap with React methods.",n),t&&o('DEFINE_MANY'===s||'DEFINE_MANY_MERGED'===s,"ReactClassInterface: You are attempting to define `%s` on your component more than once. This conflict may be due to a mixin.",n)}function N(t,n){if(n){o('function'!=typeof n,"ReactClass: You're attempting to use a component class or function as a mixin. Instead, just use a regular object."),o(!c(n),"ReactClass: You're attempting to use a component as a mixin. Instead, just use a regular object.");var p=t.prototype,u=p.__reactAutoBindPairs;for(var l in n.hasOwnProperty(s)&&h.mixins(t,n.mixins),n)if(n.hasOwnProperty(l)&&l!==s){var f=n[l],N=p.hasOwnProperty(l);if(y(N,l),h.hasOwnProperty(l))h[l](t,f);else{var _=E.hasOwnProperty(l);if('function'!=typeof f||_||N||!1===n.autobind)if(N){var D=E[l];o(_&&('DEFINE_MANY_MERGED'===D||'DEFINE_MANY'===D),"ReactClass: Unexpected spec policy %s for key %s when mixing in component specs.",D,l),'DEFINE_MANY_MERGED'===D?p[l]=M(p[l],f):'DEFINE_MANY'===D&&(p[l]=I(p[l],f))}else p[l]=f;else u.push(l,f),p[l]=f}}}}function _(t,n){if(n)for(var s in n){var p=n[s];if(n.hasOwnProperty(s)){if(o(!(s in h),"ReactClass: You are attempting to define a reserved property, `%s`, that shouldn't be on the \"statics\" key. Define it as an instance property instead; it will still be accessible on the constructor.",s),s in t){var c=f.hasOwnProperty(s)?f[s]:null;return o('DEFINE_MANY_MERGED'===c,"ReactClass: You are attempting to define `%s` on your component more than once. This conflict may be due to a mixin.",s),void(t[s]=M(t[s],p))}t[s]=p}}}function D(t,n){for(var s in o(t&&n&&'object'==typeof t&&'object'==typeof n,'mergeIntoWithNoDuplicateKeys(): Cannot merge non-objects.'),n)n.hasOwnProperty(s)&&(o(void 0===t[s],"mergeIntoWithNoDuplicateKeys(): Tried to merge two objects with the same key: `%s`. This conflict may be due to a mixin; in particular, this may be caused by two getInitialState() or getDefaultProps() methods returning objects with clashing keys.",s),t[s]=n[s]);return t}function M(t,n){return function(){var o=t.apply(this,arguments),s=n.apply(this,arguments);if(null==o)return s;if(null==s)return o;var p={};return D(p,o),D(p,s),p}}function I(t,n){return function(){t.apply(this,arguments),n.apply(this,arguments)}}function A(t,n){return n.bind(t)}function F(t){for(var n=t.__reactAutoBindPairs,o=0;o<n.length;o+=2){var s=n[o],p=n[o+1];t[s]=A(t,p)}}var Y={componentDidMount:function(){this.__isMounted=!0}},v={componentWillUnmount:function(){this.__isMounted=!1}},P={replaceState:function(t,n){this.updater.enqueueReplaceState(this,t,n)},isMounted:function(){return!!this.__isMounted}},R=function(){};return t(R.prototype,p.prototype,P),function(t){var s=function(t,p,c){this.__reactAutoBindPairs.length&&F(this),this.props=t,this.context=p,this.refs=n,this.updater=c||u,this.state=null;var l=this.getInitialState?this.getInitialState():null;o('object'==typeof l&&!Array.isArray(l),'%s.getInitialState(): must return an object or null',s.displayName||'ReactCompositeComponent'),this.state=l};for(var p in s.prototype=new R,s.prototype.constructor=s,s.prototype.__reactAutoBindPairs=[],l.forEach(N.bind(null,s)),N(s,Y),N(s,t),N(s,v),s.getDefaultProps&&(s.defaultProps=s.getDefaultProps()),o(s.prototype.render,'createClass(...): Class specification must implement a `render` method.'),E)s.prototype[p]||(s.prototype[p]=null);return s}}},220,[127,221,222]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports={}},221,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=function(n){};m.exports=function(o,t,f,s,u,c,l,v){if(n(t),!o){var p;if(void 0===t)p=new Error("Minified exception occurred; use the non-minified dev environment for the full error message and additional helpful warnings.");else{var h=[f,s,u,c,l,v],w=0;(p=new Error(t.replace(/%s/g,function(){return h[w++]}))).name='Invariant Violation'}throw p.framesToPop=1,p}}},222,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]);m.exports=function(s){n(!(s.delayPressIn<0||s.delayPressOut<0||s.delayLongPress<0),'Touchable components cannot have negative delay properties')}},223,[20]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports={DraggedTypes:['fileUrl']}},224,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),c=r(d[5]),l=r(d[6]),h=r(d[7]),u=r(d[8]),b=r(d[9]),f=r(d[10]),y=r(d[11]),R=r(d[12]),P=p.shape({type:p.oneOf(['RippleAndroid']),color:p.number,borderless:p.bool}),S=p.shape({type:p.oneOf(['ThemeAttrAndroid']),attribute:p.string.isRequired}),v=p.oneOfType([P,S]),T={top:20,left:20,right:20,bottom:30},H=f({displayName:'TouchableNativeFeedback',propTypes:s({},h.propTypes,{background:v,hasTVPreferredFocus:p.bool,useForeground:p.bool}),statics:{SelectableBackground:function(){return{type:'ThemeAttrAndroid',attribute:'selectableItemBackground'}},SelectableBackgroundBorderless:function(){return{type:'ThemeAttrAndroid',attribute:'selectableItemBackgroundBorderless'}},Ripple:function(t,s){return{type:'RippleAndroid',color:R(t),borderless:s}},canUseNativeForeground:function(){return o.Version>=23}},mixins:[l.Mixin],getDefaultProps:function(){return{background:this.SelectableBackground()}},getInitialState:function(){return this.touchableGetInitialState()},componentDidMount:function(){y(this.props)},UNSAFE_componentWillReceiveProps:function(t){y(t)},touchableHandleActivePressIn:function(t){this.props.onPressIn&&this.props.onPressIn(t),this._dispatchPressedStateChange(!0),this.pressInLocation&&this._dispatchHotspotUpdate(this.pressInLocation.locationX,this.pressInLocation.locationY)},touchableHandleActivePressOut:function(t){this.props.onPressOut&&this.props.onPressOut(t),this._dispatchPressedStateChange(!1)},touchableHandlePress:function(t){this.props.onPress&&this.props.onPress(t)},touchableHandleLongPress:function(t){this.props.onLongPress&&this.props.onLongPress(t)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||T},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn},touchableGetLongPressDelayMS:function(){return this.props.delayLongPress},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut},_handleResponderMove:function(t){this.touchableHandleResponderMove(t),this._dispatchHotspotUpdate(t.nativeEvent.locationX,t.nativeEvent.locationY)},_dispatchHotspotUpdate:function(t,s){u.dispatchViewManagerCommand(c.findNodeHandle(this),u.getViewManagerConfig('RCTView').Commands.hotspotUpdate,[t||0,s||0])},_dispatchPressedStateChange:function(t){u.dispatchViewManagerCommand(c.findNodeHandle(this),u.getViewManagerConfig('RCTView').Commands.setPressed,[t])},render:function(){var o,p=n.Children.only(this.props.children),c=p.props.children;l.TOUCH_TARGET_DEBUG&&p.type===b&&(Array.isArray(c)||(c=[c]),c.push(l.renderDebugView({color:'brown',hitSlop:this.props.hitSlop}))),this.props.useForeground&&!H.canUseNativeForeground()&&console.warn("Requested foreground ripple, but it is not available on this version of Android. Consider calling TouchableNativeFeedback.canUseNativeForeground() and using a different Touchable if the result is false.");var h=this.props.useForeground&&H.canUseNativeForeground()?'nativeForegroundAndroid':'nativeBackgroundAndroid',u=s({},p.props,(t(o={},h,this.props.background),t(o,"accessible",!1!==this.props.accessible),t(o,"accessibilityLabel",this.props.accessibilityLabel),t(o,"accessibilityHint",this.props.accessibilityHint),t(o,"accessibilityRole",this.props.accessibilityRole),t(o,"accessibilityStates",this.props.accessibilityStates),t(o,"onAccessibilityTap",this.props.onAccessibilityTap),t(o,"children",c),t(o,"testID",this.props.testID),t(o,"onLayout",this.props.onLayout),t(o,"hitSlop",this.props.hitSlop),t(o,"isTVSelectable",!0),t(o,"hasTVPreferredFocus",this.props.hasTVPreferredFocus),t(o,"onStartShouldSetResponder",this.touchableHandleStartShouldSetResponder),t(o,"onResponderTerminationRequest",this.touchableHandleResponderTerminationRequest),t(o,"onResponderGrant",this.touchableHandleResponderGrant),t(o,"onResponderMove",this._handleResponderMove),t(o,"onResponderRelease",this.touchableHandleResponderRelease),t(o,"onResponderTerminate",this.touchableHandleResponderTerminate),t(o,"clickable",!1!==this.props.clickable&&void 0!==this.props.onPress&&!this.props.disabled),t(o,"onClick",this.touchableHandlePress),o));return n.cloneElement(p,u)}});m.exports=H},225,[11,10,74,139,136,43,182,218,122,159,219,223,154]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),c=r(d[5]),l=r(d[6]),h=r(d[7]),u=r(d[8]),y=r(d[9]),b=r(d[10]),f={top:20,left:20,right:20,bottom:30},P=u({displayName:'TouchableOpacity',mixins:[l.Mixin,n],propTypes:t({},h.propTypes,{activeOpacity:c.number,hasTVPreferredFocus:c.bool,tvParallaxProperties:c.object}),getDefaultProps:function(){return{activeOpacity:.2}},getInitialState:function(){return t({},this.touchableGetInitialState(),{anim:new s.Value(this._getChildStyleOpacityWithDefault())})},componentDidMount:function(){y(this.props)},UNSAFE_componentWillReceiveProps:function(t){y(t)},componentDidUpdate:function(t,s){this.props.disabled!==t.disabled&&this._opacityInactive(250)},setOpacityTo:function(t,n){s.timing(this.state.anim,{toValue:t,duration:n,easing:o.inOut(o.quad),useNativeDriver:!0}).start()},touchableHandleActivePressIn:function(t){'onResponderGrant'===t.dispatchConfig.registrationName?this._opacityActive(0):this._opacityActive(150),this.props.onPressIn&&this.props.onPressIn(t)},touchableHandleActivePressOut:function(t){this._opacityInactive(250),this.props.onPressOut&&this.props.onPressOut(t)},touchableHandlePress:function(t){this.props.onPress&&this.props.onPress(t)},touchableHandleLongPress:function(t){this.props.onLongPress&&this.props.onLongPress(t)},touchableGetPressRectOffset:function(){return this.props.pressRetentionOffset||f},touchableGetHitSlop:function(){return this.props.hitSlop},touchableGetHighlightDelayMS:function(){return this.props.delayPressIn||0},touchableGetLongPressDelayMS:function(){return 0===this.props.delayLongPress?0:this.props.delayLongPress||500},touchableGetPressOutDelayMS:function(){return this.props.delayPressOut},_opacityActive:function(t){this.setOpacityTo(this.props.activeOpacity,t)},_opacityInactive:function(t){this.setOpacityTo(this._getChildStyleOpacityWithDefault(),t)},_getChildStyleOpacityWithDefault:function(){var t=b(this.props.style)||{};return null==t.opacity?1:t.opacity},render:function(){return p.createElement(s.View,{accessible:!1!==this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,onAccessibilityTap:this.props.onAccessibilityTap,acceptsKeyboardFocus:(void 0===this.props.acceptsKeyboardFocus||this.props.acceptsKeyboardFocus)&&!this.props.disabled,enableFocusRing:(void 0===this.props.enableFocusRing||this.props.enableFocusRing)&&!this.props.disabled,style:[this.props.style,{opacity:this.state.anim}],nativeID:this.props.nativeID,testID:this.props.testID,onLayout:this.props.onLayout,isTVSelectable:!0,hasTVPreferredFocus:this.props.hasTVPreferredFocus,tvParallaxProperties:this.props.tvParallaxProperties,hitSlop:this.props.hitSlop,onStartShouldSetResponder:this.touchableHandleStartShouldSetResponder,onResponderTerminationRequest:this.touchableHandleResponderTerminationRequest,onResponderGrant:this.touchableHandleResponderGrant,onResponderMove:this.touchableHandleResponderMove,onResponderRelease:this.touchableHandleResponderRelease,onResponderTerminate:this.touchableHandleResponderTerminate,clickable:!1!==this.props.clickable&&void 0!==this.props.onPress,onClick:this.touchableHandlePress,onMouseEnter:this.props.onMouseEnter,onMouseLeave:this.props.onMouseLeave,onDragEnter:this.props.onDragEnter,onDragLeave:this.props.onDragLeave,onDrop:this.props.onDrop,draggedTypes:this.props.draggedTypes},this.props.children,l.renderDebugView({color:'cyan',hitSlop:this.props.hitSlop}))}});m.exports=P},226,[10,227,253,217,139,136,182,218,219,223,129]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]);m.exports=t({get FlatList(){return r(d[2])},get Image(){return r(d[3])},get ScrollView(){return r(d[4])},get SectionList(){return r(d[5])},get Text(){return r(d[6])},get View(){return r(d[7])}},n)},227,[10,228,256,272,276,277,280,281]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=t.AnimatedEvent,u=t.attachNativeEvent,s=r(d[2]),c=r(d[3]),f=r(d[4]),v=r(d[5]),p=r(d[6]),l=r(d[7]),h=r(d[8]),_=r(d[9]),N=r(d[10]),w=r(d[11]),y=r(d[12]),E=r(d[13]),L=r(d[14]),A=r(d[15]),D=r(d[16]),U=r(d[17]),k=function(n,t){return n&&t.onComplete?function(){t.onComplete&&t.onComplete.apply(t,arguments),n&&n.apply(void 0,arguments)}:n||t.onComplete},V=function(t,o,u){if(t instanceof E){var s=n({},o),c=n({},o);for(var f in o){var v=o[f],p=v.x,l=v.y;void 0!==p&&void 0!==l&&(s[f]=p,c[f]=l)}var h=u(t.x,s),_=u(t.y,c);return x([h,_],{stopTogether:!1})}return null},C=function t(o,u){var s=function(n,t,o){o=k(o,t);var u=n,s=t;u.stopTracking(),t.toValue instanceof h?u.track(new w(u,t.toValue,D,s,o)):u.animate(new D(s),o)};return V(o,u,t)||{start:function(n){s(o,u,n)},stop:function(){o.stopAnimation()},reset:function(){o.resetAnimation()},_startNativeLoop:function(t){var c=n({},u,{iterations:t});s(o,c)},_isUsingNativeDriver:function(){return u.useNativeDriver||!1}}},T=function(n){var t=0;return{start:function(o){0===n.length?o&&o({finished:!0}):n[t].start(function u(s){s.finished&&++t!==n.length?n[t].start(u):o&&o(s)})},stop:function(){t<n.length&&n[t].stop()},reset:function(){n.forEach(function(n,o){o<=t&&n.reset()}),t=0},_startNativeLoop:function(){throw new Error('Loops run using the native driver cannot contain Animated.sequence animations')},_isUsingNativeDriver:function(){return!1}}},x=function(n,t){var o=0,u={},s=!(t&&!1===t.stopTogether),c={start:function(t){o!==n.length?n.forEach(function(f,v){var p=function(f){if(u[v]=!0,++o===n.length)return o=0,void(t&&t(f));!f.finished&&s&&c.stop()};f?f.start(p):p({finished:!0})}):t&&t({finished:!0})},stop:function(){n.forEach(function(n,t){!u[t]&&n.stop(),u[t]=!0})},reset:function(){n.forEach(function(n,t){n.reset(),u[t]=!1,o=0})},_startNativeLoop:function(){throw new Error('Loops run using the native driver cannot contain Animated.parallel animations')},_isUsingNativeDriver:function(){return!1}};return c},q=function(n){return C(new y(0),{toValue:0,delay:n,duration:0})};m.exports={Value:y,ValueXY:E,Interpolation:v,Node:h,decay:function t(o,u){var s=function(n,t,o){o=k(o,t);var u=n,s=t;u.stopTracking(),u.animate(new L(s),o)};return V(o,u,t)||{start:function(n){s(o,u,n)},stop:function(){o.stopAnimation()},reset:function(){o.resetAnimation()},_startNativeLoop:function(t){var c=n({},u,{iterations:t});s(o,c)},_isUsingNativeDriver:function(){return u.useNativeDriver||!1}}},timing:C,spring:function t(o,u){var s=function(n,t,o){o=k(o,t);var u=n,s=t;u.stopTracking(),t.toValue instanceof h?u.track(new w(u,t.toValue,A,s,o)):u.animate(new A(s),o)};return V(o,u,t)||{start:function(n){s(o,u,n)},stop:function(){o.stopAnimation()},reset:function(){o.resetAnimation()},_startNativeLoop:function(t){var c=n({},u,{iterations:t});s(o,c)},_isUsingNativeDriver:function(){return u.useNativeDriver||!1}}},add:function(n,t){return new s(n,t)},subtract:function(n,t){return new N(n,t)},divide:function(n,t){return new f(n,t)},multiply:function(n,t){return new l(n,t)},modulo:function(n,t){return new p(n,t)},diffClamp:function(n,t,o){return new c(n,t,o)},delay:q,sequence:T,parallel:x,stagger:function(n,t){return x(t.map(function(t,o){return T([q(n*o),t])}))},loop:function(n){var t=(arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}).iterations,o=void 0===t?-1:t,u=!1,s=0;return{start:function(t){n&&0!==o?n._isUsingNativeDriver()?n._startNativeLoop(o):(function c(){var f=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{finished:!0};u||s===o||!1===f.finished?t&&t(f):(s++,n.reset(),n.start(c))})():t&&t({finished:!0})},stop:function(){u=!0,n.stop()},reset:function(){s=0,u=!1,n.reset()},_startNativeLoop:function(){throw new Error('Loops run using the native driver cannot contain Animated.loop animations')},_isUsingNativeDriver:function(){return n._isUsingNativeDriver()}}},event:function(n,t){var u=new o(n,t);return u.__isNative?u:u.__getHandler()},createAnimatedComponent:U,attachNativeEvent:u,forkEvent:function(n,t){return n?n instanceof o?(n.__addListener(t),n):function(){'function'==typeof n&&n.apply(void 0,arguments),t.apply(void 0,arguments)}:t},unforkEvent:function(n,t){n&&n instanceof o&&n.__removeListener(t)},__PropsOnlyForTests:_}},228,[10,229,237,238,239,231,240,241,232,242,245,246,230,247,248,250,252,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),v=r(d[3]),o=r(d[4]),c=r(d[5]),_=r(d[3]).shouldUseNativeDriver;function l(t,n,_){var l=[];c(_[0]&&_[0].nativeEvent,'Native driven events only support animated values contained inside `nativeEvent`.'),(function t(n,v){if(n instanceof s)n.__makeNative(),l.push({nativeEventPath:v,animatedValueTag:n.__getNativeTag()});else if('object'==typeof n)for(var o in n)t(n[o],v.concat(o))})(_[0].nativeEvent,[]);var h=o.findNodeHandle(t);return l.forEach(function(t){v.API.addAnimatedEventToView(h,n,t)}),{detach:function(){l.forEach(function(t){v.API.removeAnimatedEventFromView(h,n,t.animatedValueTag)})}}}var h=(function(){function v(n){var s=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};t(this,v),this._listeners=[],this._argMapping=n,s.listener&&this.__addListener(s.listener),this._callListeners=this._callListeners.bind(this),this._attachedEvent=null,this.__isNative=_(s)}return n(v,[{key:"__addListener",value:function(t){this._listeners.push(t)}},{key:"__removeListener",value:function(t){this._listeners=this._listeners.filter(function(n){return n!==t})}},{key:"__attach",value:function(t,n){c(this.__isNative,'Only native driven events need to be attached.'),this._attachedEvent=l(t,n,this._argMapping)}},{key:"__detach",value:function(t,n){c(this.__isNative,'Only native driven events need to be detached.'),this._attachedEvent&&this._attachedEvent.detach()}},{key:"__getHandler",value:function(){var t=this;return this.__isNative?this._callListeners:function(){for(var n=arguments.length,v=new Array(n),o=0;o<n;o++)v[o]=arguments[o];var c=function t(n,v,o){if('number'==typeof v&&n instanceof s)n.setValue(v);else if('object'==typeof n)for(var c in n)t(n[c],v[c],c)};t.__isNative||t._argMapping.forEach(function(t,n){c(t,v[n])}),t._callListeners.apply(t,v)}}},{key:"_callListeners",value:function(){for(var t=arguments.length,n=new Array(t),s=0;s<t;s++)n[s]=arguments[s];this._listeners.forEach(function(t){return t.apply(void 0,n)})}},{key:"_validateMapping",value:function(){}}]),v})();m.exports={AnimatedEvent:h,attachNativeEvent:l}},229,[1,2,230,233,43,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),_=r(d[3]),u=r(d[4]),l=r(d[5]),o=r(d[6]),h=r(d[7]),v=r(d[8]),f=r(d[9]),c=f.API,p=1;function k(t){var n=new Set;!(function t(s){'function'==typeof s.update?n.add(s):s.__getChildren().forEach(t)})(t),n.forEach(function(t){return t.update()})}var N=(function(N){function y(n){var u;return t(this,y),(u=s(this,_(y).call(this)))._startingValue=u._value=n,u._offset=0,u._animation=null,u._listeners={},u}return l(y,h),n(y,[{key:"__detach",value:function(){this.stopAnimation(),u(_(y.prototype),"__detach",this).call(this)}},{key:"__getValue",value:function(){return this._value+this._offset}},{key:"__makeNative",value:function(){u(_(y.prototype),"__makeNative",this).call(this),Object.keys(this._listeners).length&&this._startListeningToNativeValueUpdates()}},{key:"setValue",value:function(t){this._animation&&(this._animation.stop(),this._animation=null),this._updateValue(t,!this.__isNative),this.__isNative&&c.setAnimatedNodeValue(this.__getNativeTag(),t)}},{key:"setOffset",value:function(t){this._offset=t,this.__isNative&&c.setAnimatedNodeOffset(this.__getNativeTag(),t)}},{key:"flattenOffset",value:function(){this._value+=this._offset,this._offset=0,this.__isNative&&c.flattenAnimatedNodeOffset(this.__getNativeTag())}},{key:"extractOffset",value:function(){this._offset+=this._value,this._value=0,this.__isNative&&c.extractAnimatedNodeOffset(this.__getNativeTag())}},{key:"addListener",value:function(t){var n=String(p++);return this._listeners[n]=t,this.__isNative&&this._startListeningToNativeValueUpdates(),n}},{key:"removeListener",value:function(t){delete this._listeners[t],this.__isNative&&0===Object.keys(this._listeners).length&&this._stopListeningForNativeValueUpdates()}},{key:"removeAllListeners",value:function(){this._listeners={},this.__isNative&&this._stopListeningForNativeValueUpdates()}},{key:"_startListeningToNativeValueUpdates",value:function(){var t=this;this.__nativeAnimatedValueListener||(c.startListeningToAnimatedNodeValue(this.__getNativeTag()),this.__nativeAnimatedValueListener=f.nativeEventEmitter.addListener('onAnimatedValueUpdate',function(n){n.tag===t.__getNativeTag()&&t._updateValue(n.value,!1)}))}},{key:"_stopListeningForNativeValueUpdates",value:function(){this.__nativeAnimatedValueListener&&(this.__nativeAnimatedValueListener.remove(),this.__nativeAnimatedValueListener=null,c.stopListeningToAnimatedNodeValue(this.__getNativeTag()))}},{key:"stopAnimation",value:function(t){this.stopTracking(),this._animation&&this._animation.stop(),this._animation=null,t&&t(this.__getValue())}},{key:"resetAnimation",value:function(t){this.stopAnimation(t),this._value=this._startingValue}},{key:"interpolate",value:function(t){return new o(this,t)}},{key:"animate",value:function(t,n){var s=this,_=null;t.__isInteraction&&(_=v.createInteractionHandle());var u=this._animation;this._animation&&this._animation.stop(),this._animation=t,t.start(this._value,function(t){s._updateValue(t,!0)},function(t){s._animation=null,null!==_&&v.clearInteractionHandle(_),n&&n(t)},u,this)}},{key:"stopTracking",value:function(){this._tracking&&this._tracking.__detach(),this._tracking=null}},{key:"track",value:function(t){this.stopTracking(),this._tracking=t}},{key:"_updateValue",value:function(t,n){for(var s in this._value=t,n&&k(this),this._listeners)this._listeners[s]({value:this.__getValue()})}},{key:"__getNativeConfig",value:function(){return{type:'value',value:this._value,offset:this._offset}}}]),y})();m.exports=N},230,[1,2,3,6,29,7,231,234,235,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),u=r(d[3]),p=r(d[4]),l=r(d[5]),h=r(d[6]),f=(r(d[7]),r(d[8])),c=r(d[9]),s=r(d[10]),_=r(d[11]),v=function(t){return t};function y(t){if(t.outputRange&&'string'==typeof t.outputRange[0])return b(t);var n=t.outputRange;w('outputRange',n);var o=t.inputRange;w('inputRange',o),N(o),s(o.length===n.length,'inputRange ('+o.length+') and outputRange ('+n.length+') must have the same length');var u=t.easing||v,p='extend';void 0!==t.extrapolateLeft?p=t.extrapolateLeft:void 0!==t.extrapolate&&(p=t.extrapolate);var l='extend';return void 0!==t.extrapolateRight?l=t.extrapolateRight:void 0!==t.extrapolate&&(l=t.extrapolate),function(t){s('number'==typeof t,'Cannot interpolation an input which is not a number');var h=L(t,o);return R(t,o[h],o[h+1],n[h],n[h+1],u,p,l)}}function R(t,n,o,u,p,l,h,f){var c=t;if(c<n){if('identity'===h)return c;'clamp'===h&&(c=n)}if(c>o){if('identity'===f)return c;'clamp'===f&&(c=o)}return u===p?u:n===o?t<=n?u:p:(n===-1/0?c=-c:o===1/0?c-=n:c=(c-n)/(o-n),c=l(c),u===-1/0?c=-c:p===1/0?c+=u:c=c*(p-u)+u,c)}function x(t){var n=_(t);return null===n||'number'!=typeof n?t:"rgba("+((4278190080&(n=n||0))>>>24)+", "+((16711680&n)>>>16)+", "+((65280&n)>>>8)+", "+(255&n)/255+")"}var k=/[0-9\.-]+/g;function b(t){var n=t.outputRange;s(n.length>=2,'Bad output range'),C(n=n.map(x));var o=n[0].match(k).map(function(){return[]});n.forEach(function(t){t.match(k).forEach(function(t,n){o[n].push(+t)})});var u,p=n[0].match(k).map(function(n,u){return y(h({},t,{outputRange:o[u]}))}),l='string'==typeof(u=n[0])&&u.startsWith('rgb');return function(t){var o=0;return n[0].replace(k,function(){var n=+p[o++](t),u=l&&o<4?Math.round(n):Math.round(1e3*n)/1e3;return String(u)})}}function C(t){for(var n=t[0].replace(k,''),o=1;o<t.length;++o)s(n===t[o].replace(k,''),'invalid pattern '+t[0]+' and '+t[o])}function L(t,n){var o;for(o=1;o<n.length-1&&!(n[o]>=t);++o);return o-1}function N(t){s(t.length>=2,'inputRange must have at least 2 elements');for(var n=1;n<t.length;++n)s(t[n]>=t[n-1],'inputRange must be monotonically non-decreasing '+t)}function w(t,n){s(n.length>=2,t+' must have at least 2 elements'),s(2!==n.length||n[0]!==-1/0||n[1]!==1/0,t+'cannot be ]-infinity;+infinity[ '+n)}var D=(function(h){function _(n,p){var l;return t(this,_),(l=o(this,u(_).call(this)))._parent=n,l._config=p,l._interpolation=y(p),l}return l(_,f),n(_,[{key:"__makeNative",value:function(){this._parent.__makeNative(),p(u(_.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){var t=this._parent.__getValue();return s('number'==typeof t,'Cannot interpolate an input which is not a number.'),this._interpolation(t)}},{key:"interpolate",value:function(t){return new _(this,t)}},{key:"__attach",value:function(){this._parent.__addChild(this)}},{key:"__detach",value:function(){this._parent.__removeChild(this),p(u(_.prototype),"__detach",this).call(this)}},{key:"__transformDataType",value:function(t){return t.map(c.transformDataType)}},{key:"__getNativeConfig",value:function(){return{inputRange:this._config.inputRange,outputRange:this.__transformDataType(this._config.outputRange),extrapolateLeft:this._config.extrapolateLeft||this._config.extrapolate||'extend',extrapolateRight:this._config.extrapolateRight||this._config.extrapolate||'extend',type:'interpolation'}}}]),_})();D.__createInterpolation=y,m.exports=D},231,[1,2,3,6,29,7,10,232,234,233,20,147]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),_=r(d[2]),o=r(d[3]),u=(function(){function u(){t(this,u)}return n(u,[{key:"__attach",value:function(){}},{key:"__detach",value:function(){this.__isNative&&null!=this.__nativeTag&&(_.API.dropAnimatedNode(this.__nativeTag),this.__nativeTag=void 0)}},{key:"__getValue",value:function(){}},{key:"__getAnimatedValue",value:function(){return this.__getValue()}},{key:"__addChild",value:function(t){}},{key:"__removeChild",value:function(t){}},{key:"__getChildren",value:function(){return[]}},{key:"__makeNative",value:function(){if(!this.__isNative)throw new Error('This node cannot be made a "native" animated node')}},{key:"__getNativeTag",value:function(){if(_.assertNativeAnimatedModule(),o(this.__isNative,'Attempt to get native tag from node not marked as "native"'),null==this.__nativeTag){var t=_.generateNewNodeTag();_.API.createAnimatedNode(t,this.__getNativeConfig()),this.__nativeTag=t}return this.__nativeTag}},{key:"__getNativeConfig",value:function(){throw new Error('This JS animated node type cannot be used as native animated node')}},{key:"toJSON",value:function(){return this.__getValue()}}]),u})();m.exports=u},232,[1,2,233,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]).NativeAnimatedModule,o=r(d[1]),s=r(d[2]),u=1,c=1,f={createAnimatedNode:function(t,o){A(),n.createAnimatedNode(t,o)},startListeningToAnimatedNodeValue:function(t){A(),n.startListeningToAnimatedNodeValue(t)},stopListeningToAnimatedNodeValue:function(t){A(),n.stopListeningToAnimatedNodeValue(t)},connectAnimatedNodes:function(t,o){A(),n.connectAnimatedNodes(t,o)},disconnectAnimatedNodes:function(t,o){A(),n.disconnectAnimatedNodes(t,o)},startAnimatingNode:function(t,o,s,u){A(),n.startAnimatingNode(t,o,s,u)},stopAnimation:function(t){A(),n.stopAnimation(t)},setAnimatedNodeValue:function(t,o){A(),n.setAnimatedNodeValue(t,o)},setAnimatedNodeOffset:function(t,o){A(),n.setAnimatedNodeOffset(t,o)},flattenAnimatedNodeOffset:function(t){A(),n.flattenAnimatedNodeOffset(t)},extractAnimatedNodeOffset:function(t){A(),n.extractAnimatedNodeOffset(t)},connectAnimatedNodeToView:function(t,o){A(),n.connectAnimatedNodeToView(t,o)},disconnectAnimatedNodeFromView:function(t,o){A(),n.disconnectAnimatedNodeFromView(t,o)},dropAnimatedNode:function(t){A(),n.dropAnimatedNode(t)},addAnimatedEventToView:function(t,o,s){A(),n.addAnimatedEventToView(t,o,s)},removeAnimatedEventFromView:function(t,o,s){A(),n.removeAnimatedEventFromView(t,o,s)}},p={opacity:!0,transform:!0,borderRadius:!0,borderBottomEndRadius:!0,borderBottomLeftRadius:!0,borderBottomRightRadius:!0,borderBottomStartRadius:!0,borderTopEndRadius:!0,borderTopLeftRadius:!0,borderTopRightRadius:!0,borderTopStartRadius:!0,elevation:!0,shadowOpacity:!0,shadowRadius:!0,scaleX:!0,scaleY:!0,translateX:!0,translateY:!0},l={translateX:!0,translateY:!0,scale:!0,scaleX:!0,scaleY:!0,rotate:!0,rotateX:!0,rotateY:!0,perspective:!0},v={inputRange:!0,outputRange:!0,extrapolate:!0,extrapolateRight:!0,extrapolateLeft:!0};function A(){s(n,'Native animated module is not available')}var N=!1;m.exports={API:f,addWhitelistedStyleProp:function(t){p[t]=!0},addWhitelistedTransformProp:function(t){l[t]=!0},addWhitelistedInterpolationParam:function(t){v[t]=!0},validateStyles:function(t){for(var n in t)if(!p.hasOwnProperty(n))throw new Error("Style property '"+n+"' is not supported by native animated module")},validateTransform:function(t){t.forEach(function(t){if(!l.hasOwnProperty(t.property))throw new Error("Property '"+t.property+"' is not supported by native animated module")})},validateInterpolation:function(t){for(var n in t)if(!v.hasOwnProperty(n))throw new Error("Interpolation property '"+n+"' is not supported by native animated module")},generateNewNodeTag:function(){return u++},generateNewAnimationId:function(){return c++},assertNativeAnimatedModule:A,shouldUseNativeDriver:function(t){return t.useNativeDriver&&!n?(N||(console.warn("Animated: `useNativeDriver` is not supported because the native animated module is missing. Falling back to JS-based animation. To resolve this, add `RCTAnimation` module to this app, or remove `useNativeDriver`. More info: https://github.com/facebook/react-native/issues/11094#issuecomment-263240420"),N=!0),!1):t.useNativeDriver||!1},transformDataType:function(t){return'string'!=typeof t?t:/deg$/.test(t)?(parseFloat(t)||0)*Math.PI/180:parseFloat(t)||0},get nativeEventEmitter(){return t||(t=new o(n)),t}}},233,[38,87,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),h=r(d[3]),s=r(d[4]),c=r(d[5]),o=r(d[6]),l=(function(l){function v(){var _;return t(this,v),(_=n(this,h(v).call(this)))._children=[],_}return s(v,c),_(v,[{key:"__makeNative",value:function(){if(!this.__isNative){this.__isNative=!0;var t=this._children,_=Array.isArray(t),n=0;for(t=_?t:t["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var h;if(_){if(n>=t.length)break;h=t[n++]}else{if((n=t.next()).done)break;h=n.value}var s=h;s.__makeNative(),o.API.connectAnimatedNodes(this.__getNativeTag(),s.__getNativeTag())}}}},{key:"__addChild",value:function(t){0===this._children.length&&this.__attach(),this._children.push(t),this.__isNative&&(t.__makeNative(),o.API.connectAnimatedNodes(this.__getNativeTag(),t.__getNativeTag()))}},{key:"__removeChild",value:function(t){var _=this._children.indexOf(t);-1!==_?(this.__isNative&&t.__isNative&&o.API.disconnectAnimatedNodes(this.__getNativeTag(),t.__getNativeTag()),this._children.splice(_,1),0===this._children.length&&this.__detach()):console.warn("Trying to remove a child that doesn't exist")}},{key:"__getChildren",value:function(){return this._children}}]),v})();m.exports=l},234,[1,2,3,6,7,232,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),c=(r(d[3]),r(d[4])),s=r(d[5]),u=new t,l={Events:s({interactionStart:!0,interactionComplete:!0}),runAfterInteractions:function(n){var t=[],o=new Promise(function(o){k(),n&&t.push(n),t.push({run:o,name:'resolve '+(n&&n.name||'?')}),h.enqueueTasks(t)});return{then:o.then.bind(o),done:function(){if(o.done)return o.done.apply(o,arguments);console.warn('Tried to call done when not supported by current Promise implementation.')},cancel:function(){h.cancelTasks(t)}}},createInteractionHandle:function(){k();var n=++T;return p.add(n),n},clearInteractionHandle:function(n){c(!!n,'Must provide a handle to clear.'),k(),p.delete(n),v.add(n)},addListener:u.addListener.bind(u),setDeadline:function(n){E=n}},f=new Set,p=new Set,v=new Set,h=new o({onMoreTasks:k}),w=0,T=0,E=-1;function k(){w||(w=E>0?setTimeout(S,0):setImmediate(S))}function S(){w=0;var t=f.size;p.forEach(function(n){return f.add(n)}),v.forEach(function(n){return f.delete(n)});var o=f.size;if(0!==t&&0===o?u.emit(l.Events.interactionComplete):0===t&&0!==o&&u.emit(l.Events.interactionStart),0===o)for(;h.hasTasksToProcess();)if(h.processNext(),E>0&&n.getEventLoopRunningTime()>=E){k();break}p.clear(),v.clear()}m.exports=l},235,[12,31,236,36,20,188]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),u=r(d[1]),s=r(d[2]),n=(r(d[3]),r(d[4])),o=(function(){function o(t){var s=t.onMoreTasks;u(this,o),this._onMoreTasks=s,this._queueStack=[{tasks:[],popable:!1}]}return s(o,[{key:"enqueue",value:function(t){this._getCurrentQueue().push(t)}},{key:"enqueueTasks",value:function(t){var u=this;t.forEach(function(t){return u.enqueue(t)})}},{key:"cancelTasks",value:function(u){this._queueStack=this._queueStack.map(function(s){return t({},s,{tasks:s.tasks.filter(function(t){return-1===u.indexOf(t)})})}).filter(function(t,u){return t.tasks.length>0||0===u})}},{key:"hasTasksToProcess",value:function(){return this._getCurrentQueue().length>0}},{key:"processNext",value:function(){var t=this._getCurrentQueue();if(t.length){var u=t.shift();try{u.gen?this._genPromise(u):u.run?u.run():(n('function'==typeof u,'Expected Function, SimpleTask, or PromiseTask, but got:\n'+JSON.stringify(u,null,2)),u())}catch(t){throw t.message='TaskQueue: Error with task '+(u.name||'')+': '+t.message,t}}}},{key:"_getCurrentQueue",value:function(){var t=this._queueStack.length-1,u=this._queueStack[t];return u.popable&&0===u.tasks.length&&this._queueStack.length>1?(this._queueStack.pop(),this._getCurrentQueue()):u.tasks}},{key:"_genPromise",value:function(t){var u=this;this._queueStack.push({tasks:[],popable:!1});var s=this._queueStack.length-1;t.gen().then(function(){u._queueStack[s].popable=!0,u.hasTasksToProcess()&&u._onMoreTasks()}).catch(function(u){throw u.message="TaskQueue: Error resolving Promise in task "+t.name+": "+u.message,u}).done()}}]),o})();m.exports=o},236,[10,1,2,36,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),h=r(d[3]),u=r(d[4]),s=r(d[5]),o=r(d[6]),l=(r(d[7]),r(d[8])),v=r(d[9]),c=(function(c){function f(_,u){var s;return t(this,f),(s=n(this,h(f).call(this)))._a='number'==typeof _?new l(_):_,s._b='number'==typeof u?new l(u):u,s}return s(f,v),_(f,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),u(h(f.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return this._a.__getValue()+this._b.__getValue()}},{key:"interpolate",value:function(t){return new o(this,t)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),u(h(f.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'addition',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),f})();m.exports=c},237,[1,2,3,6,29,7,231,232,230,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),u=r(d[3]),h=r(d[4]),s=r(d[5]),l=r(d[6]),v=(r(d[7]),r(d[8])),c=(function(c){function o(_,h,s){var l;return t(this,o),(l=n(this,u(o).call(this)))._a=_,l._min=h,l._max=s,l._value=l._lastValue=l._a.__getValue(),l}return s(o,v),_(o,[{key:"__makeNative",value:function(){this._a.__makeNative(),h(u(o.prototype),"__makeNative",this).call(this)}},{key:"interpolate",value:function(t){return new l(this,t)}},{key:"__getValue",value:function(){var t=this._a.__getValue(),_=t-this._lastValue;return this._lastValue=t,this._value=Math.min(Math.max(this._value+_,this._min),this._max),this._value}},{key:"__attach",value:function(){this._a.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),h(u(o.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'diffclamp',input:this._a.__getNativeTag(),min:this._min,max:this._max}}}]),o})();m.exports=c},238,[1,2,3,6,29,7,231,232,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),h=r(d[3]),s=r(d[4]),o=r(d[5]),u=r(d[6]),l=(r(d[7]),r(d[8])),v=r(d[9]),c=(function(c){function f(_,s){var o;return t(this,f),(o=n(this,h(f).call(this)))._a='number'==typeof _?new l(_):_,o._b='number'==typeof s?new l(s):s,o}return o(f,v),_(f,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),s(h(f.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){var t=this._a.__getValue(),_=this._b.__getValue();return 0===_&&console.error('Detected division by zero in AnimatedDivision'),t/_}},{key:"interpolate",value:function(t){return new u(this,t)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),s(h(f.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'division',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),f})();m.exports=c},239,[1,2,3,6,29,7,231,232,230,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),u=r(d[1]),_=r(d[2]),s=r(d[3]),n=r(d[4]),h=r(d[5]),l=r(d[6]),o=(r(d[7]),r(d[8])),c=(function(c){function v(u,n){var h;return t(this,v),(h=_(this,s(v).call(this)))._a=u,h._modulus=n,h}return h(v,o),u(v,[{key:"__makeNative",value:function(){this._a.__makeNative(),n(s(v.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return(this._a.__getValue()%this._modulus+this._modulus)%this._modulus}},{key:"interpolate",value:function(t){return new l(this,t)}},{key:"__attach",value:function(){this._a.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),n(s(v.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'modulus',input:this._a.__getNativeTag(),modulus:this._modulus}}}]),v})();m.exports=c},240,[1,2,3,6,29,7,231,232,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),h=r(d[3]),u=r(d[4]),s=r(d[5]),l=r(d[6]),o=(r(d[7]),r(d[8])),c=r(d[9]),v=(function(v){function f(_,u){var s;return t(this,f),(s=n(this,h(f).call(this)))._a='number'==typeof _?new o(_):_,s._b='number'==typeof u?new o(u):u,s}return s(f,c),_(f,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),u(h(f.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return this._a.__getValue()*this._b.__getValue()}},{key:"interpolate",value:function(t){return new l(this,t)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),u(h(f.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'multiplication',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),f})();m.exports=v},241,[1,2,3,6,29,7,231,232,230,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),_=r(d[2]),s=r(d[3]),o=r(d[4]),c=r(d[5]),v=r(d[6]),h=r(d[7]).AnimatedEvent,l=r(d[8]),p=r(d[9]),u=r(d[10]),f=r(d[11]),N=r(d[12]),V=(function(V){function w(_,c){var v;return n(this,w),v=s(this,o(w).call(this)),_.style&&(_=t({},_,{style:new p(_.style)})),v._props=_,v._callback=c,v.__attach(),v}return v(w,l),_(w,[{key:"__getValue",value:function(){var t={};for(var n in this._props){var _=this._props[n];_ instanceof l?(!_.__isNative||_ instanceof p)&&(t[n]=_.__getValue()):t[n]=_ instanceof h?_.__getHandler():_}return t}},{key:"__getAnimatedValue",value:function(){var t={};for(var n in this._props){var _=this._props[n];_ instanceof l&&(t[n]=_.__getAnimatedValue())}return t}},{key:"__attach",value:function(){for(var t in this._props){var n=this._props[t];n instanceof l&&n.__addChild(this)}}},{key:"__detach",value:function(){for(var t in this.__isNative&&this._animatedView&&this.__disconnectAnimatedView(),this._props){var n=this._props[t];n instanceof l&&n.__removeChild(this)}c(o(w.prototype),"__detach",this).call(this)}},{key:"update",value:function(){this._callback()}},{key:"__makeNative",value:function(){if(!this.__isNative){for(var t in this.__isNative=!0,this._props){var n=this._props[t];n instanceof l&&n.__makeNative()}this._animatedView&&this.__connectAnimatedView()}}},{key:"setNativeView",value:function(t){this._animatedView!==t&&(this._animatedView=t,this.__isNative&&this.__connectAnimatedView())}},{key:"__connectAnimatedView",value:function(){N(this.__isNative,'Expected node to be marked as "native"');var t=f.findNodeHandle(this._animatedView);N(null!=t,'Unable to locate attached view in the native tree'),u.API.connectAnimatedNodeToView(this.__getNativeTag(),t)}},{key:"__disconnectAnimatedView",value:function(){N(this.__isNative,'Expected node to be marked as "native"');var t=f.findNodeHandle(this._animatedView);N(null!=t,'Unable to locate attached view in the native tree'),u.API.disconnectAnimatedNodeFromView(this.__getNativeTag(),t)}},{key:"__getNativeConfig",value:function(){var t={};for(var n in this._props){var _=this._props[n];_ instanceof l&&(t[n]=_.__getNativeTag())}return{type:'props',props:t}}}]),w})();m.exports=V},242,[10,1,2,3,6,29,7,229,232,243,233,43,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),_=r(d[4]),y=r(d[5]),o=r(d[6]),u=r(d[7]),v=r(d[8]),f=r(d[9]),h=r(d[10]),c=r(d[11]),k=(function(k){function A(s){var y;return n(this,A),y=l(this,_(A).call(this)),(s=c(s)||{}).transform&&(s=t({},s,{transform:new v(s.transform)})),y._style=s,y}return o(A,f),s(A,[{key:"_walkStyleAndGetValues",value:function(t){var n={};for(var s in t){var l=t[s];l instanceof u?l.__isNative||(n[s]=l.__getValue()):l&&!Array.isArray(l)&&'object'==typeof l?n[s]=this._walkStyleAndGetValues(l):n[s]=l}return n}},{key:"__getValue",value:function(){return this._walkStyleAndGetValues(this._style)}},{key:"_walkStyleAndGetAnimatedValues",value:function(t){var n={};for(var s in t){var l=t[s];l instanceof u?n[s]=l.__getAnimatedValue():l&&!Array.isArray(l)&&'object'==typeof l&&(n[s]=this._walkStyleAndGetAnimatedValues(l))}return n}},{key:"__getAnimatedValue",value:function(){return this._walkStyleAndGetAnimatedValues(this._style)}},{key:"__attach",value:function(){for(var t in this._style){var n=this._style[t];n instanceof u&&n.__addChild(this)}}},{key:"__detach",value:function(){for(var t in this._style){var n=this._style[t];n instanceof u&&n.__removeChild(this)}y(_(A.prototype),"__detach",this).call(this)}},{key:"__makeNative",value:function(){for(var t in this._style){var n=this._style[t];n instanceof u&&n.__makeNative()}y(_(A.prototype),"__makeNative",this).call(this)}},{key:"__getNativeConfig",value:function(){var t={};for(var n in this._style)this._style[n]instanceof u&&(t[n]=this._style[n].__getNativeTag());return h.validateStyles(t),{type:'style',style:t}}}]),A})();m.exports=k},243,[10,1,2,3,6,29,7,232,244,234,233,129]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),f=r(d[4]),_=r(d[5]),u=r(d[6]),c=r(d[7]),v=r(d[8]),h=(function(h){function l(n){var f;return t(this,l),(f=o(this,s(l).call(this)))._transforms=n,f}return _(l,c),n(l,[{key:"__makeNative",value:function(){this._transforms.forEach(function(t){for(var n in t){var o=t[n];o instanceof u&&o.__makeNative()}}),f(s(l.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return this._transforms.map(function(t){var n={};for(var o in t){var s=t[o];n[o]=s instanceof u?s.__getValue():s}return n})}},{key:"__getAnimatedValue",value:function(){return this._transforms.map(function(t){var n={};for(var o in t){var s=t[o];n[o]=s instanceof u?s.__getAnimatedValue():s}return n})}},{key:"__attach",value:function(){var t=this;this._transforms.forEach(function(n){for(var o in n){var s=n[o];s instanceof u&&s.__addChild(t)}})}},{key:"__detach",value:function(){var t=this;this._transforms.forEach(function(n){for(var o in n){var s=n[o];s instanceof u&&s.__removeChild(t)}}),f(s(l.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){var t=[];return this._transforms.forEach(function(n){for(var o in n){var s=n[o];s instanceof u?t.push({type:'animated',property:o,nodeTag:s.__getNativeTag()}):t.push({type:'static',property:o,value:v.transformDataType(s)})}}),v.validateTransform(t),{type:'transform',transforms:t}}}]),l})();m.exports=h},244,[1,2,3,6,29,7,232,234,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),_=r(d[1]),n=r(d[2]),h=r(d[3]),u=r(d[4]),s=r(d[5]),o=r(d[6]),l=(r(d[7]),r(d[8])),c=r(d[9]),v=(function(v){function f(_,u){var s;return t(this,f),(s=n(this,h(f).call(this)))._a='number'==typeof _?new l(_):_,s._b='number'==typeof u?new l(u):u,s}return s(f,c),_(f,[{key:"__makeNative",value:function(){this._a.__makeNative(),this._b.__makeNative(),u(h(f.prototype),"__makeNative",this).call(this)}},{key:"__getValue",value:function(){return this._a.__getValue()-this._b.__getValue()}},{key:"interpolate",value:function(t){return new o(this,t)}},{key:"__attach",value:function(){this._a.__addChild(this),this._b.__addChild(this)}},{key:"__detach",value:function(){this._a.__removeChild(this),this._b.__removeChild(this),u(h(f.prototype),"__detach",this).call(this)}},{key:"__getNativeConfig",value:function(){return{type:'subtraction',input:[this._a.__getNativeTag(),this._b.__getNativeTag()]}}}]),f})();m.exports=v},245,[1,2,3,6,29,7,231,232,230,234]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),_=r(d[2]),s=r(d[3]),o=r(d[4]),u=r(d[5]),l=r(d[6]),h=(r(d[7]),r(d[8])),v=r(d[9]),c=v.generateNewAnimationId,f=v.shouldUseNativeDriver,k=(function(v){function k(t,_,u,l,h){var v;return n(this,k),(v=s(this,o(k).call(this)))._value=t,v._parent=_,v._animationClass=u,v._animationConfig=l,v._useNativeDriver=f(l),v._callback=h,v.__attach(),v}return l(k,h),_(k,[{key:"__makeNative",value:function(){this.__isNative=!0,this._parent.__makeNative(),u(o(k.prototype),"__makeNative",this).call(this),this._value.__makeNative()}},{key:"__getValue",value:function(){return this._parent.__getValue()}},{key:"__attach",value:function(){this._parent.__addChild(this),this._useNativeDriver&&this.__makeNative()}},{key:"__detach",value:function(){this._parent.__removeChild(this),u(o(k.prototype),"__detach",this).call(this)}},{key:"update",value:function(){this._value.animate(new this._animationClass(t({},this._animationConfig,{toValue:this._animationConfig.toValue.__getValue()})),this._callback)}},{key:"__getNativeConfig",value:function(){var n=new this._animationClass(t({},this._animationConfig,{toValue:void 0})).__getNativeAnimationConfig();return{type:'tracking',animationId:c(),animationConfig:n,toValue:this._parent.__getNativeTag(),value:this._value.__getNativeTag()}}}]),k})();m.exports=k},246,[10,1,2,3,6,29,7,230,232,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),u=r(d[3]),l=r(d[4]),f=r(d[5]),o=r(d[6]),y=r(d[7]),h=1,x=(function(x){function c(s){var l;t(this,c),l=n(this,u(c).call(this));var o=s||{x:0,y:0};return'number'==typeof o.x&&'number'==typeof o.y?(l.x=new f(o.x),l.y=new f(o.y)):(y(o.x instanceof f&&o.y instanceof f,"AnimatedValueXY must be initialized with an object of numbers or AnimatedValues."),l.x=o.x,l.y=o.y),l._listeners={},l}return l(c,o),s(c,[{key:"setValue",value:function(t){this.x.setValue(t.x),this.y.setValue(t.y)}},{key:"setOffset",value:function(t){this.x.setOffset(t.x),this.y.setOffset(t.y)}},{key:"flattenOffset",value:function(){this.x.flattenOffset(),this.y.flattenOffset()}},{key:"extractOffset",value:function(){this.x.extractOffset(),this.y.extractOffset()}},{key:"__getValue",value:function(){return{x:this.x.__getValue(),y:this.y.__getValue()}}},{key:"resetAnimation",value:function(t){this.x.resetAnimation(),this.y.resetAnimation(),t&&t(this.__getValue())}},{key:"stopAnimation",value:function(t){this.x.stopAnimation(),this.y.stopAnimation(),t&&t(this.__getValue())}},{key:"addListener",value:function(t){var s=this,n=String(h++),u=function(n){n.value;t(s.__getValue())};return this._listeners[n]={x:this.x.addListener(u),y:this.y.addListener(u)},n}},{key:"removeListener",value:function(t){this.x.removeListener(this._listeners[t].x),this.y.removeListener(this._listeners[t].y),delete this._listeners[t]}},{key:"removeAllListeners",value:function(){this.x.removeAllListeners(),this.y.removeAllListeners(),this._listeners={}}},{key:"getLayout",value:function(){return{left:this.x,top:this.y}}},{key:"getTranslateTransform",value:function(){return[{translateX:this.x},{translateY:this.y}]}}]),c})();m.exports=x},247,[1,2,3,6,7,230,234,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),_=r(d[4]),h=r(d[5]),c=r(d[6]),l=r(d[7]).shouldUseNativeDriver,u=(function(u){function v(n){var _;return t(this,v),(_=s(this,o(v).call(this)))._deceleration=void 0!==n.deceleration?n.deceleration:.998,_._velocity=n.velocity,_._useNativeDriver=l(n),_.__isInteraction=void 0===n.isInteraction||n.isInteraction,_.__iterations=void 0!==n.iterations?n.iterations:1,_}return h(v,c),n(v,[{key:"__getNativeAnimationConfig",value:function(){return{type:'decay',deceleration:this._deceleration,velocity:this._velocity,iterations:this.__iterations}}},{key:"start",value:function(t,n,s,o,_){this.__active=!0,this._lastValue=t,this._fromValue=t,this._onUpdate=n,this.__onEnd=s,this._startTime=Date.now(),this._useNativeDriver?this.__startNativeAnimation(_):this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))}},{key:"onUpdate",value:function(){var t=Date.now(),n=this._fromValue+this._velocity/(1-this._deceleration)*(1-Math.exp(-(1-this._deceleration)*(t-this._startTime)));this._onUpdate(n),Math.abs(this._lastValue-n)<.1?this.__debouncedOnEnd({finished:!0}):(this._lastValue=n,this.__active&&(this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))))}},{key:"stop",value:function(){_(o(v.prototype),"stop",this).call(this),this.__active=!1,g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),v})();m.exports=u},248,[1,2,3,6,29,7,249,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),_=(function(){function _(){t(this,_)}return n(_,[{key:"start",value:function(t,n,o,_,s){}},{key:"stop",value:function(){this.__nativeId&&o.API.stopAnimation(this.__nativeId)}},{key:"__getNativeAnimationConfig",value:function(){throw new Error('This animation type cannot be offloaded to native')}},{key:"__debouncedOnEnd",value:function(t){var n=this.__onEnd;this.__onEnd=null,n&&n(t)}},{key:"__startNativeAnimation",value:function(t){t.__makeNative(),this.__nativeId=o.generateNewAnimationId(),o.API.startAnimatingNode(this.__nativeId,t.__getNativeTag(),this.__getNativeAnimationConfig(),this.__debouncedOnEnd.bind(this))}}]),_})();m.exports=_},249,[1,2,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),h=r(d[4]),_=r(d[5]),l=(r(d[6]),r(d[7]),r(d[8])),f=r(d[9]),c=r(d[10]),u=r(d[11]).shouldUseNativeDriver;function v(t,s){return void 0===t||null===t?s:t}var p=(function(p){function y(s){var h;if(t(this,y),(h=n(this,o(y).call(this)))._overshootClamping=v(s.overshootClamping,!1),h._restDisplacementThreshold=v(s.restDisplacementThreshold,.001),h._restSpeedThreshold=v(s.restSpeedThreshold,.001),h._initialVelocity=v(s.velocity,0),h._lastVelocity=v(s.velocity,0),h._toValue=s.toValue,h._delay=v(s.delay,0),h._useNativeDriver=u(s),h.__isInteraction=void 0===s.isInteraction||s.isInteraction,h.__iterations=void 0!==s.iterations?s.iterations:1,void 0!==s.stiffness||void 0!==s.damping||void 0!==s.mass)c(void 0===s.bounciness&&void 0===s.speed&&void 0===s.tension&&void 0===s.friction,'You can define one of bounciness/speed, tension/friction, or stiffness/damping/mass, but not more than one'),h._stiffness=v(s.stiffness,100),h._damping=v(s.damping,10),h._mass=v(s.mass,1);else if(void 0!==s.bounciness||void 0!==s.speed){c(void 0===s.tension&&void 0===s.friction&&void 0===s.stiffness&&void 0===s.damping&&void 0===s.mass,'You can define one of bounciness/speed, tension/friction, or stiffness/damping/mass, but not more than one');var _=f.fromBouncinessAndSpeed(v(s.bounciness,8),v(s.speed,12));h._stiffness=_.stiffness,h._damping=_.damping,h._mass=1}else{var l=f.fromOrigamiTensionAndFriction(v(s.tension,40),v(s.friction,7));h._stiffness=l.stiffness,h._damping=l.damping,h._mass=1}return c(h._stiffness>0,'Stiffness value must be greater than 0'),c(h._damping>0,'Damping value must be greater than 0'),c(h._mass>0,'Mass value must be greater than 0'),h}return _(y,l),s(y,[{key:"__getNativeAnimationConfig",value:function(){return{type:'spring',overshootClamping:this._overshootClamping,restDisplacementThreshold:this._restDisplacementThreshold,restSpeedThreshold:this._restSpeedThreshold,stiffness:this._stiffness,damping:this._damping,mass:this._mass,initialVelocity:v(this._initialVelocity,this._lastVelocity),toValue:this._toValue,iterations:this.__iterations}}},{key:"start",value:function(t,s,n,o,h){var _=this;if(this.__active=!0,this._startPosition=t,this._lastPosition=this._startPosition,this._onUpdate=s,this.__onEnd=n,this._lastTime=Date.now(),this._frameTime=0,o instanceof y){var l=o.getInternalState();this._lastPosition=l.lastPosition,this._lastVelocity=l.lastVelocity,this._initialVelocity=this._lastVelocity,this._lastTime=l.lastTime}var f=function(){_._useNativeDriver?_.__startNativeAnimation(h):_.onUpdate()};this._delay?this._timeout=setTimeout(f,this._delay):f()}},{key:"getInternalState",value:function(){return{lastPosition:this._lastPosition,lastVelocity:this._lastVelocity,lastTime:this._lastTime}}},{key:"onUpdate",value:function(){var t=Date.now();t>this._lastTime+64&&(t=this._lastTime+64);var s=(t-this._lastTime)/1e3;this._frameTime+=s;var n=this._damping,o=this._mass,h=this._stiffness,_=-this._initialVelocity,l=n/(2*Math.sqrt(h*o)),f=Math.sqrt(h/o),c=f*Math.sqrt(1-l*l),u=this._toValue-this._startPosition,v=0,p=0,y=this._frameTime;if(l<1){var V=Math.exp(-l*f*y);v=this._toValue-V*((_+l*f*u)/c*Math.sin(c*y)+u*Math.cos(c*y)),p=l*f*V*(Math.sin(c*y)*(_+l*f*u)/c+u*Math.cos(c*y))-V*(Math.cos(c*y)*(_+l*f*u)-c*u*Math.sin(c*y))}else{var T=Math.exp(-f*y);v=this._toValue-T*(u+(_+f*u)*y),p=T*(_*(y*f-1)+y*u*(f*f))}if(this._lastTime=t,this._lastPosition=v,this._lastVelocity=p,this._onUpdate(v),this.__active){var b=!1;this._overshootClamping&&0!==this._stiffness&&(b=this._startPosition<this._toValue?v>this._toValue:v<this._toValue);var M=Math.abs(p)<=this._restSpeedThreshold,D=!0;if(0!==this._stiffness&&(D=Math.abs(this._toValue-v)<=this._restDisplacementThreshold),b||M&&D)return 0!==this._stiffness&&(this._lastPosition=this._toValue,this._lastVelocity=0,this._onUpdate(this._toValue)),void this.__debouncedOnEnd({finished:!0});this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this))}}},{key:"stop",value:function(){h(o(y.prototype),"stop",this).call(this),this.__active=!1,clearTimeout(this._timeout),g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),y})();m.exports=p},250,[1,2,3,6,29,7,230,247,249,251,20,233]);
+__d(function(g,r,i,a,m,e,d){'use strict';function n(n){return 3.62*(n-30)+194}function t(n){return 3*(n-8)+25}m.exports={fromOrigamiTensionAndFriction:function(o,u){return{stiffness:n(o),damping:t(u)}},fromBouncinessAndSpeed:function(o,u){function f(n,t,o){return(n-t)/(o-t)}function c(n,t,o){return t+n*(o-t)}function s(n,t,o){return n*o+(1-n)*t}function p(n){return 44e-6*Math.pow(n,3)-.006*Math.pow(n,2)+.36*n+2}function h(n){return 4.5e-7*Math.pow(n,3)-332e-6*Math.pow(n,2)+.1078*n+5.84}var w=f(o/1.7,0,20);w=c(w,0,.8);var M,v,A,_,x=c(f(u/1.7,0,20),.5,200),B=(M=w,v=(A=x)<=18?(_=A,7e-4*Math.pow(_,3)-.031*Math.pow(_,2)+.64*_+1.28):A>18&&A<=44?p(A):h(A),s(2*M-M*M,v,.01));return{stiffness:n(x),damping:t(B)}}}},251,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]),s=r(d[1]),o=r(d[2]),_=r(d[3]),u=r(d[4]),h=r(d[5]),v=(r(d[6]),r(d[7]),r(d[8])),l=r(d[9]).shouldUseNativeDriver;function c(){if(!t){var n=r(d[10]);t=n.inOut(n.ease)}return t}var f=(function(t){function f(t){var s;return n(this,f),(s=o(this,_(f).call(this)))._toValue=t.toValue,s._easing=void 0!==t.easing?t.easing:c(),s._duration=void 0!==t.duration?t.duration:500,s._delay=void 0!==t.delay?t.delay:0,s.__iterations=void 0!==t.iterations?t.iterations:1,s.__isInteraction=void 0===t.isInteraction||t.isInteraction,s._useNativeDriver=l(t),s}return h(f,v),s(f,[{key:"__getNativeAnimationConfig",value:function(){for(var t=[],n=0;n<this._duration;n+=16.666666666666668)t.push(this._easing(n/this._duration));return t.push(this._easing(1)),{type:'frames',frames:t,toValue:this._toValue,iterations:this.__iterations}}},{key:"start",value:function(t,n,s,o,_){var u=this;this.__active=!0,this._fromValue=t,this._onUpdate=n,this.__onEnd=s;var h=function(){0!==u._duration||u._useNativeDriver?(u._startTime=Date.now(),u._useNativeDriver?u.__startNativeAnimation(_):u._animationFrame=requestAnimationFrame(u.onUpdate.bind(u))):(u._onUpdate(u._toValue),u.__debouncedOnEnd({finished:!0}))};this._delay?this._timeout=setTimeout(h,this._delay):h()}},{key:"onUpdate",value:function(){var t=Date.now();if(t>=this._startTime+this._duration)return 0===this._duration?this._onUpdate(this._toValue):this._onUpdate(this._fromValue+this._easing(1)*(this._toValue-this._fromValue)),void this.__debouncedOnEnd({finished:!0});this._onUpdate(this._fromValue+this._easing((t-this._startTime)/this._duration)*(this._toValue-this._fromValue)),this.__active&&(this._animationFrame=requestAnimationFrame(this.onUpdate.bind(this)))}},{key:"stop",value:function(){u(_(f.prototype),"stop",this).call(this),this.__active=!1,clearTimeout(this._timeout),g.cancelAnimationFrame(this._animationFrame),this.__debouncedOnEnd({finished:!1})}}]),f})();m.exports=f},252,[1,2,3,6,29,7,230,247,249,233,253]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n,u=r(d[0]),t=r(d[1]),o=(function(){function o(){u(this,o)}return t(o,null,[{key:"step0",value:function(n){return n>0?1:0}},{key:"step1",value:function(n){return n>=1?1:0}},{key:"linear",value:function(n){return n}},{key:"ease",value:function(u){return n||(n=o.bezier(.42,0,1,1)),n(u)}},{key:"quad",value:function(n){return n*n}},{key:"cubic",value:function(n){return n*n*n}},{key:"poly",value:function(n){return function(u){return Math.pow(u,n)}}},{key:"sin",value:function(n){return 1-Math.cos(n*Math.PI/2)}},{key:"circle",value:function(n){return 1-Math.sqrt(1-n*n)}},{key:"exp",value:function(n){return Math.pow(2,10*(n-1))}},{key:"elastic",value:function(){var n=(arguments.length>0&&void 0!==arguments[0]?arguments[0]:1)*Math.PI;return function(u){return 1-Math.pow(Math.cos(u*Math.PI/2),3)*Math.cos(u*n)}}},{key:"back",value:function(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:1.70158;return function(u){return u*u*((n+1)*u-n)}}},{key:"bounce",value:function(n){if(n<.36363636363636365)return 7.5625*n*n;if(n<.7272727272727273){var u=n-.5454545454545454;return 7.5625*u*u+.75}if(n<.9090909090909091){var t=n-.8181818181818182;return 7.5625*t*t+.9375}var o=n-.9545454545454546;return 7.5625*o*o+.984375}},{key:"bezier",value:function(n,u,t,o){return r(d[2])(n,u,t,o)}},{key:"in",value:function(n){return n}},{key:"out",value:function(n){return function(u){return 1-n(1-u)}}},{key:"inOut",value:function(n){return function(u){return u<.5?n(2*u)/2:1-n(2*(1-u))/2}}}]),o})();m.exports=o},253,[1,2,254]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=4,t=.001,u=1e-7,o=10,f=.1,c='function'==typeof Float32Array;function v(n,t){return 1-3*t+3*n}function s(n,t){return 3*t-6*n}function w(n){return 3*n}function l(n,t,u){return((v(t,u)*n+s(t,u))*n+w(t))*n}function y(n,t,u){return 3*v(t,u)*n*n+2*s(t,u)*n+w(t)}function b(n,t,f,c,v){var s,w,y=0,b=t,h=f;do{(s=l(w=b+(h-b)/2,c,v)-n)>0?h=w:b=w}while(Math.abs(s)>u&&++y<o);return w}function h(t,u,o,f){for(var c=u,v=0;v<n;++v){var s=y(c,o,f);if(0===s)return c;c-=(l(c,o,f)-t)/s}return c}m.exports=function(n,u,o,v){if(!(n>=0&&n<=1&&o>=0&&o<=1))throw new Error('bezier x values must be in [0, 1] range');var s=c?new Float32Array(11):new Array(11);if(n!==u||o!==v)for(var w=0;w<11;++w)s[w]=l(w*f,n,o);function A(u){for(var c=0,v=1;10!==v&&s[v]<=u;++v)c+=f;var w=c+(u-s[--v])/(s[v+1]-s[v])*f,l=y(w,n,o);return l>=t?h(u,w,n,o):0===l?w:b(u,c,c+f,n,o)}return function(t){return n===u&&o===v?t:0===t?0:1===t?1:l(A(t),u,v)}}},254,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),p=r(d[4]),c=r(d[5]),_=r(d[6]),h=r(d[7]).AnimatedEvent,v=r(d[8]),l=r(d[9]),u=r(d[10]),f=r(d[11]);m.exports=function(k){f('function'!=typeof k||k.prototype&&k.prototype.isReactComponent,"`createAnimatedComponent` does not support stateless functional components; use a class component instead.");var N=(function(u){function f(t){var o;return n(this,f),(o=s(this,p(f).call(this,t)))._invokeAnimatedPropsCallbackOnMount=!1,o._eventDetachers=[],o._animatedPropsCallback=function(){if(null==o._component)o._invokeAnimatedPropsCallbackOnMount=!0;else if(f.__skipSetNativeProps_FOR_TESTS_ONLY||'function'!=typeof o._component.setNativeProps)o.forceUpdate();else{if(o._propsAnimated.__isNative)throw new Error("Attempting to run JS driven animation on animated node that has been moved to \"native\" earlier by starting an animation with `useNativeDriver: true`");o._component.setNativeProps(o._propsAnimated.__getAnimatedValue())}},o._setComponentRef=o._setComponentRef.bind(c(o)),o}return _(f,u),o(f,[{key:"componentWillUnmount",value:function(){this._propsAnimated&&this._propsAnimated.__detach(),this._detachNativeEvents()}},{key:"setNativeProps",value:function(t){this._component.setNativeProps(t)}},{key:"UNSAFE_componentWillMount",value:function(){this._attachProps(this.props)}},{key:"componentDidMount",value:function(){this._invokeAnimatedPropsCallbackOnMount&&(this._invokeAnimatedPropsCallbackOnMount=!1,this._animatedPropsCallback()),this._propsAnimated.setNativeView(this._component),this._attachNativeEvents()}},{key:"_attachNativeEvents",value:function(){var t=this,n=this._component.getScrollableNode?this._component.getScrollableNode():this._component,o=function(o){var s=t.props[o];s instanceof h&&s.__isNative&&(s.__attach(n,o),t._eventDetachers.push(function(){return s.__detach(n,o)}))};for(var s in this.props)o(s)}},{key:"_detachNativeEvents",value:function(){this._eventDetachers.forEach(function(t){return t()}),this._eventDetachers=[]}},{key:"_attachProps",value:function(t){var n=this._propsAnimated;this._propsAnimated=new v(t,this._animatedPropsCallback),n&&n.__detach()}},{key:"UNSAFE_componentWillReceiveProps",value:function(t){this._attachProps(t)}},{key:"componentDidUpdate",value:function(t){this._component!==this._prevComponent&&this._propsAnimated.setNativeView(this._component),this._component===this._prevComponent&&t===this.props||(this._detachNativeEvents(),this._attachNativeEvents())}},{key:"render",value:function(){var n=this._propsAnimated.__getValue();return l.createElement(k,t({},n,{ref:this._setComponentRef,collapsable:!this._propsAnimated.__isNative&&n.collapsable}))}},{key:"_setComponentRef",value:function(t){this._prevComponent=this._component,this._component=t}},{key:"getNode",value:function(){return this._component}}]),f})(l.Component);N.__skipSetNativeProps_FOR_TESTS_ONLY=!1;var y=k.propTypes;return N.propTypes={style:function(t,n,o){if(y)for(var s in u)y[s]||void 0===t[s]||console.warn('You are setting the style `{ '+s+": ... }` as a prop. You should nest it in a style object. E.g. `{ style: { "+s+': ... } }`')}},N}},255,[41,1,2,3,6,5,7,229,242,139,153,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},256,[257,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),f=r(d[7]),p=r(d[8]),h=r(d[9]),C=r(d[10]),v=r(d[11]),y=r(d[12]),b=c({},C.defaultProps,{numColumns:1}),_=(function(b){function _(t){var l;return n(this,_),(l=o(this,s(_).call(this,t)))._virtualizedListPairs=[],l._captureRef=function(t){l._listRef=t},l._getItem=function(t,n){var o=l.props.numColumns;if(o>1){for(var s=[],u=0;u<o;u++){var c=t[n*o+u];null!=c&&s.push(c)}return s}return t[n]},l._getItemCount=function(t){return t?Math.ceil(t.length/l.props.numColumns):0},l._keyExtractor=function(t,n){var o=l.props,s=o.keyExtractor,u=o.numColumns;return u>1?(y(Array.isArray(t),"FlatList: Encountered internal consistency error, expected each item to consist of an array with 1-%s columns; instead, received a single item.",u),t.map(function(t,o){return s(t,n*u+o)}).join(':')):s(t,n)},l._renderItem=function(t){var n=l.props,o=n.renderItem,s=n.numColumns,u=n.columnWrapperStyle;if(s>1){var c=t.item,f=t.index,C=t.isSelected;return y(Array.isArray(c),'Expected array of items with numColumns > 1'),p.createElement(h,{style:v.compose(w.row,u)},c.map(function(n,l){var u=o({item:n,index:f*s+l,isSelected:C,separators:t.separators});return u&&p.cloneElement(u,{key:l})}))}return o(t)},l._checkProps(l.props),l.props.viewabilityConfigCallbackPairs?l._virtualizedListPairs=l.props.viewabilityConfigCallbackPairs.map(function(t){return{viewabilityConfig:t.viewabilityConfig,onViewableItemsChanged:l._createOnViewableItemsChanged(t.onViewableItemsChanged)}}):l.props.onViewableItemsChanged&&l._virtualizedListPairs.push({viewabilityConfig:l.props.viewabilityConfig,onViewableItemsChanged:l._createOnViewableItemsChanged(l.props.onViewableItemsChanged)}),l}return u(_,b),l(_,[{key:"scrollToEnd",value:function(t){this._listRef&&this._listRef.scrollToEnd(t)}},{key:"scrollToIndex",value:function(t){this._listRef&&this._listRef.scrollToIndex(t)}},{key:"scrollToItem",value:function(t){this._listRef&&this._listRef.scrollToItem(t)}},{key:"scrollToOffset",value:function(t){this._listRef&&this._listRef.scrollToOffset(t)}},{key:"recordInteraction",value:function(){this._listRef&&this._listRef.recordInteraction()}},{key:"flashScrollIndicators",value:function(){this._listRef&&this._listRef.flashScrollIndicators()}},{key:"getScrollResponder",value:function(){if(this._listRef)return this._listRef.getScrollResponder()}},{key:"getScrollableNode",value:function(){if(this._listRef)return this._listRef.getScrollableNode()}},{key:"setNativeProps",value:function(t){this._listRef&&this._listRef.setNativeProps(t)}}]),l(_,[{key:"componentDidUpdate",value:function(t){y(t.numColumns===this.props.numColumns,"Changing numColumns on the fly is not supported. Change the key prop on FlatList when changing the number of columns to force a fresh render of the component."),y(t.onViewableItemsChanged===this.props.onViewableItemsChanged,'Changing onViewableItemsChanged on the fly is not supported'),y(!f(t.viewabilityConfig,this.props.viewabilityConfig),'Changing viewabilityConfig on the fly is not supported'),y(t.viewabilityConfigCallbackPairs===this.props.viewabilityConfigCallbackPairs,'Changing viewabilityConfigCallbackPairs on the fly is not supported'),this._checkProps(this.props)}},{key:"_checkProps",value:function(t){var n=t.getItem,o=t.getItemCount,s=t.horizontal,l=t.numColumns,u=t.columnWrapperStyle,c=t.onViewableItemsChanged,f=t.viewabilityConfigCallbackPairs;y(!n&&!o,'FlatList does not support custom data formats.'),l>1?y(!s,'numColumns does not support horizontal.'):y(!u,'columnWrapperStyle not supported for single column lists'),y(!(c&&f),"FlatList does not support setting both onViewableItemsChanged and viewabilityConfigCallbackPairs.")}},{key:"_pushMultiColumnViewable",value:function(t,n){var o=this.props,s=o.numColumns,l=o.keyExtractor;n.item.forEach(function(o,u){y(null!=n.index,'Missing index!');var f=n.index*s+u;t.push(c({},n,{item:o,key:l(o,f),index:f}))})}},{key:"_createOnViewableItemsChanged",value:function(t){var n=this;return function(o){var s=n.props.numColumns;if(t)if(s>1){var l=[],u=[];o.viewableItems.forEach(function(t){return n._pushMultiColumnViewable(u,t)}),o.changed.forEach(function(t){return n._pushMultiColumnViewable(l,t)}),t({viewableItems:u,changed:l})}else t(o)}}},{key:"render",value:function(){return p.createElement(C,t({},this.props,{renderItem:this._renderItem,getItem:this._getItem,getItemCount:this._getItemCount,keyExtractor:this._keyExtractor,ref:this._captureRef,viewabilityConfigCallbackPairs:this._virtualizedListPairs}))}}]),_})(p.PureComponent);_.defaultProps=b;var w=v.create({row:{flexDirection:'row'}});m.exports=_},257,[41,1,3,6,2,7,10,128,139,159,258,140,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),l=r(d[4]),h=r(d[5]),c=r(d[6]),p=r(d[7]),u=r(d[8]),f=r(d[9]),_=r(d[10]),v=(r(d[11]),r(d[12])),y=r(d[13]),C=r(d[14]),L=r(d[15]),b=r(d[16]),S=r(d[17]),M=r(d[18]),x=r(d[19]),I=r(d[20]),k=(r(d[21]),r(d[22])),w=r(d[23]),R=(r(d[24]),r(d[25]).computeWindowedRenderLimits),E=!1,T='',z=(function(v){function z(t,p){var u;o(this,z),(u=l(this,h(z).call(this,t,p))).ensureItemAtIndexIsVisible=function(t){var s=u._getFrameMetricsApprox(t),n=u._scrollMetrics.offset,o=n+u._scrollMetrics.visibleLength,l=u._scrollMetrics.contentLength,h=s.offset+s.length;if(h>o){var c=Math.min(l,n+(h-o));u.scrollToOffset({offset:c})}else if(s.offset<n){var p=Math.max(0,n-s.length);u.scrollToOffset({offset:p})}},u._getScrollMetrics=function(){return u._scrollMetrics},u._getOutermostParentListRef=function(){return u._isNestedWithSameOrientation()?u.context.virtualizedList.getOutermostParentListRef():c(u)},u._getNestedChildState=function(t){var s=u._nestedChildLists.get(t);return s&&s.state},u._registerAsNestedChild=function(t){var s=u._cellKeysToChildListKeys.get(t.cellKey)||new Set;s.add(t.key),u._cellKeysToChildListKeys.set(t.cellKey,s);var n=u._nestedChildLists.get(t.key);w(!(n&&null!==n.ref),"A VirtualizedList contains a cell which itself contains more than one VirtualizedList of the same orientation as the parent list. You must pass a unique listKey prop to each sibling list."),u._nestedChildLists.set(t.key,{ref:t.ref,state:null}),u._hasInteracted&&t.ref.recordInteraction()},u._unregisterAsNestedChild=function(t){u._nestedChildLists.set(t.key,{ref:null,state:t.state})},u._onUpdateSeparators=function(t,s){t.forEach(function(t){var n=null!=t&&u._cellRefs[t];n&&n.updateSeparatorProps(s)})},u._averageCellLength=0,u._cellKeysToChildListKeys=new Map,u._cellRefs={},u._frames={},u._footerLength=0,u._hasDataChangedSinceEndReached=!0,u._hasInteracted=!1,u._hasMore=!1,u._hasWarned={},u._highestMeasuredFrameIndex=0,u._headerLength=0,u._indicesToKeys=new Map,u._hasDoneInitialScroll=!1,u._nestedChildLists=new Map,u._offsetFromParentVirtualizedList=0,u._prevParentOffset=0,u._scrollMetrics={contentLength:0,dOffset:0,dt:10,offset:0,timestamp:0,velocity:0,visibleLength:0},u._scrollRef=null,u._sentEndForContentLength=0,u._totalCellLength=0,u._totalCellsMeasured=0,u._viewabilityTuples=[],u._captureScrollRef=function(t){u._scrollRef=t},u._defaultRenderScrollComponent=function(t){var n=u.props.onKeyDown;n||(n=u.props.enableSelectionOnKeyPress?u._handleKeyDown:null);var o=t.onRefresh;return u._isNestedWithSameOrientation()?y.createElement(x,t):o?(w('boolean'==typeof t.refreshing,'`refreshing` prop must be set as a boolean in order to use `onRefresh`, but got `'+JSON.stringify(t.refreshing)+'`'),y.createElement(b,s({},t,{onKeyDown:n,refreshControl:null==t.refreshControl?y.createElement(L,{refreshing:t.refreshing,onRefresh:o,progressViewOffset:t.progressViewOffset}):t.refreshControl}))):y.createElement(b,s({},t,{onKeyDown:n}))},u._onCellUnmount=function(t){var s=u._frames[t];s&&(u._frames[t]=n({},s,{inLayout:!1}))},u._onLayout=function(t){u._isNestedWithSameOrientation()?u.measureLayoutRelativeToContainingList():u._scrollMetrics.visibleLength=u._selectLength(t.nativeEvent.layout),u.props.onLayout&&u.props.onLayout(t),u._scheduleCellsToRenderUpdate(),u._maybeCallOnEndReached()},u._onLayoutEmpty=function(t){u.props.onLayout&&u.props.onLayout(t)},u._onLayoutFooter=function(t){u._footerLength=u._selectLength(t.nativeEvent.layout)},u._onLayoutHeader=function(t){u._headerLength=u._selectLength(t.nativeEvent.layout)},u._selectRowAboveIndex=function(t){var s=t>0?t-1:t;return u.setState(function(t){return{selectedRowIndex:s}}),s},u._selectRowBelowIndex=function(t){if(u.props.getItemCount){var s=u.props.data,n=t<u.props.getItemCount(s)-1?t+1:t;return u.setState(function(t){return{selectedRowIndex:n}}),n}return t},u._handleKeyDown=function(t){u.props.onKeyDown&&u.props.onKeyDown(t)},u._onContentSizeChange=function(t,s){t>0&&s>0&&null!=u.props.initialScrollIndex&&u.props.initialScrollIndex>0&&!u._hasDoneInitialScroll&&(u.scrollToIndex({animated:!1,index:u.props.initialScrollIndex}),u._hasDoneInitialScroll=!0),u.props.onContentSizeChange&&u.props.onContentSizeChange(t,s),u._scrollMetrics.contentLength=u._selectLength({height:s,width:t}),u._scheduleCellsToRenderUpdate(),u._maybeCallOnEndReached()},u._convertParentScrollMetrics=function(t){var s=t.offset-u._offsetFromParentVirtualizedList,n=t.visibleLength,o=s-u._scrollMetrics.offset;return{visibleLength:n,contentLength:u._scrollMetrics.contentLength,offset:s,dOffset:o}},u._onScroll=function(t){u._nestedChildLists.forEach(function(s){s.ref&&s.ref._onScroll(t)}),u.props.onScroll&&u.props.onScroll(t);var s=t.timeStamp,n=u._selectLength(t.nativeEvent.layoutMeasurement),o=u._selectLength(t.nativeEvent.contentSize),l=u._selectOffset(t.nativeEvent.contentOffset),h=l-u._scrollMetrics.offset;if(u._isNestedWithSameOrientation()){if(0===u._scrollMetrics.contentLength)return;var c=u._convertParentScrollMetrics({visibleLength:n,offset:l});n=c.visibleLength,o=c.contentLength,l=c.offset,h=c.dOffset}var p=u._scrollMetrics.timestamp?Math.max(1,s-u._scrollMetrics.timestamp):1,f=h/p;p>500&&u._scrollMetrics.dt>500&&o>5*n&&!u._hasWarned.perf&&(k("VirtualizedList: You have a large list that is slow to update - make sure your renderItem function renders components that follow React performance best practices like PureComponent, shouldComponentUpdate, etc.",{dt:p,prevDt:u._scrollMetrics.dt,contentLength:o}),u._hasWarned.perf=!0),u._scrollMetrics={contentLength:o,dt:p,dOffset:h,offset:l,timestamp:s,velocity:f,visibleLength:n},u._updateViewableItems(u.props.data),u.props&&(u._maybeCallOnEndReached(),0!==f&&u._fillRateHelper.activate(),u._computeBlankness(),u._scheduleCellsToRenderUpdate())},u._onScrollBeginDrag=function(t){u._nestedChildLists.forEach(function(s){s.ref&&s.ref._onScrollBeginDrag(t)}),u._viewabilityTuples.forEach(function(t){t.viewabilityHelper.recordInteraction()}),u._hasInteracted=!0,u.props.onScrollBeginDrag&&u.props.onScrollBeginDrag(t)},u._onScrollEndDrag=function(t){var s=t.nativeEvent.velocity;s&&(u._scrollMetrics.velocity=u._selectOffset(s)),u._computeBlankness(),u.props.onScrollEndDrag&&u.props.onScrollEndDrag(t)},u._onMomentumScrollEnd=function(t){u._scrollMetrics.velocity=0,u._computeBlankness(),u.props.onMomentumScrollEnd&&u.props.onMomentumScrollEnd(t)},u._updateCellsToRender=function(){var t=u.props,s=t.data,n=t.getItemCount,o=t.onEndReachedThreshold,l=u._isVirtualizationDisabled();u._updateViewableItems(s),s&&u.setState(function(t){var h;if(l){var c=u._scrollMetrics,p=c.contentLength,f=c.offset,_=c.visibleLength,v=p-_-f<o*_?u.props.maxToRenderPerBatch:0;h={first:0,last:Math.min(t.last+v,n(s)-1)}}else u._scrollMetrics.visibleLength&&(u.props.initialScrollIndex&&!u._scrollMetrics.offset||(h=R(u.props,t,u._getFrameMetricsApprox,u._scrollMetrics)));if(h&&u._nestedChildLists.size>0)for(var y=h.first,C=h.last,L=y;L<=C;L++){var b=u._indicesToKeys.get(L),S=b&&u._cellKeysToChildListKeys.get(b);if(S){var M=!1,x=S,I=Array.isArray(x),k=0;for(x=I?x:x["function"==typeof Symbol&&"function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var w;if(I){if(k>=x.length)break;w=x[k++]}else{if((k=x.next()).done)break;w=k.value}var E=w,T=u._nestedChildLists.get(E);if(T&&T.ref&&T.ref.hasMore()){M=!0;break}}if(M){h.last=L;break}}}return h})},u._createViewToken=function(t,s){var n=u.props,o=n.data,l=n.getItem,h=n.keyExtractor,c=l(o,t);return{index:t,item:c,key:h(c,t),isViewable:s}},u._getFrameMetricsApprox=function(t){var s=u._getFrameMetrics(t);if(s&&s.index===t)return s;var n=u.props.getItemLayout;return w(!n,'Should not have to estimate frames when a measurement metrics function is provided'),{length:u._averageCellLength,offset:u._averageCellLength*t}},u._getFrameMetrics=function(t){var s=u.props,n=s.data,o=s.getItem,l=s.getItemCount,h=s.getItemLayout,c=s.keyExtractor;w(l(n)>t,'Tried to get frame for out of range index '+t);var p=o(n,t),f=p&&u._frames[c(p,t)];return f&&f.index===t||h&&(f=h(n,t)),f},w(!t.onScroll||!t.onScroll.__isNative,"Components based on VirtualizedList must be wrapped with Animated.createAnimatedComponent to support native onScroll events with useNativeDriver"),w(t.windowSize>0,'VirtualizedList: The windowSize prop must be present and set to a value greater than 0.'),u._fillRateHelper=new _(u._getFrameMetrics),u._updateCellsToRenderBatcher=new f(u._updateCellsToRender,u.props.updateCellsBatchingPeriod),u.props.viewabilityConfigCallbackPairs?u._viewabilityTuples=u.props.viewabilityConfigCallbackPairs.map(function(t){return{viewabilityHelper:new I(t.viewabilityConfig),onViewableItemsChanged:t.onViewableItemsChanged}}):u.props.onViewableItemsChanged&&u._viewabilityTuples.push({viewabilityHelper:new I(u.props.viewabilityConfig),onViewableItemsChanged:u.props.onViewableItemsChanged});var v={first:u.props.initialScrollIndex||0,last:Math.min(u.props.getItemCount(u.props.data),(u.props.initialScrollIndex||0)+u.props.initialNumToRender)-1,selectedRowIndex:0};if(u._isNestedWithSameOrientation()){var C=u.context.virtualizedList.getNestedChildState(u.props.listKey||u._getCellKey());C&&(v=C,u.state=C,u._frames=C.frames)}return u.state=v,u}return u(z,v),p(z,[{key:"scrollToEnd",value:function(t){var s=!t||t.animated,n=this.props.getItemCount(this.props.data)-1,o=this._getFrameMetricsApprox(n),l=Math.max(0,o.offset+o.length+this._footerLength-this._scrollMetrics.visibleLength);this._scrollRef.scrollTo(this.props.horizontal?{x:l,animated:s}:{y:l,animated:s})}},{key:"scrollToIndex",value:function(t){var s=this.props,n=s.data,o=s.horizontal,l=s.getItemCount,h=s.getItemLayout,c=s.onScrollToIndexFailed,p=t.animated,u=t.index,f=t.viewOffset,_=t.viewPosition;if(w(u>=0&&u<l(n),"scrollToIndex out of range: "+u+" vs "+(l(n)-1)),!h&&u>this._highestMeasuredFrameIndex)return w(!!c,"scrollToIndex should be used in conjunction with getItemLayout or onScrollToIndexFailed, otherwise there is no way to know the location of offscreen indices or handle failures."),void c({averageItemLength:this._averageCellLength,highestMeasuredFrameIndex:this._highestMeasuredFrameIndex,index:u});var v=this._getFrameMetricsApprox(u),y=Math.max(0,v.offset-(_||0)*(this._scrollMetrics.visibleLength-v.length))-(f||0);this._scrollRef.scrollTo(o?{x:y,animated:p}:{y:y,animated:p})}},{key:"scrollToItem",value:function(t){for(var s=t.item,o=this.props,l=o.data,h=o.getItem,c=(0,o.getItemCount)(l),p=0;p<c;p++)if(h(l,p)===s){this.scrollToIndex(n({},t,{index:p}));break}}},{key:"scrollToOffset",value:function(t){var s=t.animated,n=t.offset;this._scrollRef.scrollTo(this.props.horizontal?{x:n,animated:s}:{y:n,animated:s})}},{key:"recordInteraction",value:function(){this._nestedChildLists.forEach(function(t){t.ref&&t.ref.recordInteraction()}),this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.recordInteraction()}),this._updateViewableItems(this.props.data)}},{key:"flashScrollIndicators",value:function(){this._scrollRef.flashScrollIndicators()}},{key:"getScrollResponder",value:function(){if(this._scrollRef&&this._scrollRef.getScrollResponder)return this._scrollRef.getScrollResponder()}},{key:"getScrollableNode",value:function(){return this._scrollRef&&this._scrollRef.getScrollableNode?this._scrollRef.getScrollableNode():C.findNodeHandle(this._scrollRef)}},{key:"setNativeProps",value:function(t){this._scrollRef&&this._scrollRef.setNativeProps(t)}},{key:"getChildContext",value:function(){return{virtualizedList:{getScrollMetrics:this._getScrollMetrics,horizontal:this.props.horizontal,getOutermostParentListRef:this._getOutermostParentListRef,getNestedChildState:this._getNestedChildState,registerAsNestedChild:this._registerAsNestedChild,unregisterAsNestedChild:this._unregisterAsNestedChild}}}},{key:"_getCellKey",value:function(){return this.context.virtualizedCell&&this.context.virtualizedCell.cellKey||'rootList'}},{key:"hasMore",value:function(){return this._hasMore}}]),p(z,[{key:"componentDidMount",value:function(){this._isNestedWithSameOrientation()&&this.context.virtualizedList.registerAsNestedChild({cellKey:this._getCellKey(),key:this.props.listKey||this._getCellKey(),ref:this})}},{key:"componentWillUnmount",value:function(){this._isNestedWithSameOrientation()&&this.context.virtualizedList.unregisterAsNestedChild({key:this.props.listKey||this._getCellKey(),state:{first:this.state.first,last:this.state.last,frames:this._frames}}),this._updateViewableItems(null),this._updateCellsToRenderBatcher.dispose({abort:!0}),this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.dispose()}),this._fillRateHelper.deactivateAndFlush()}},{key:"_pushCells",value:function(t,s,n,o,l,h){var c,p=this,u=this.props,f=u.CellRendererComponent,_=u.ItemSeparatorComponent,v=u.data,C=u.getItem,L=u.getItemCount,b=u.horizontal,S=u.keyExtractor,M=this.props.ListHeaderComponent?1:0,x=L(v)-1;l=Math.min(x,l);for(var I=function(o){var l=C(v,o),u=S(l,o);p._indicesToKeys.set(o,u),n.has(o+M)&&s.push(t.length),t.push(y.createElement(K,{CellRendererComponent:f,ItemSeparatorComponent:o<x?_:void 0,cellKey:u,fillRateHelper:p._fillRateHelper,horizontal:b,index:o,inversionStyle:h,item:l,isSelected:p.state.selectedRowIndex==o,key:u,prevCellKey:c,onUpdateSeparators:p._onUpdateSeparators,onLayout:function(t){return p._onCellLayout(t,u,o)},onUnmount:p._onCellUnmount,parentProps:p.props,ref:function(t){p._cellRefs[u]=t}})),c=u},k=o;k<=l;k++)I(k)}},{key:"_isVirtualizationDisabled",value:function(){return this.props.disableVirtualization}},{key:"_isNestedWithSameOrientation",value:function(){var t=this.context.virtualizedList;return!(!t||!!t.horizontal!=!!this.props.horizontal)}},{key:"render",value:function(){var s=this,o=this.props,l=o.ListEmptyComponent,h=o.ListFooterComponent,c=o.ListHeaderComponent,p=this.props,u=p.data,f=p.horizontal,_=this._isVirtualizationDisabled(),v=this.props.inverted?this.props.horizontal?F.horizontallyInverted:F.verticallyInverted:null,C=[],L=new Set(this.props.stickyHeaderIndices),b=[];if(c){L.has(0)&&b.push(0);var M=y.isValidElement(c)?c:y.createElement(c,null);C.push(y.createElement(O,{cellKey:this._getCellKey()+'-header',key:"$header"},y.createElement(x,{onLayout:this._onLayoutHeader,style:S.compose(v,this.props.ListHeaderComponentStyle)},M)))}var I=this.props.getItemCount(u);if(I>0){E=!1,T='';var k=f?'width':'height',w=this.props.initialScrollIndex?-1:this.props.initialNumToRender-1,R=this.state,z=R.first,K=R.last;this._pushCells(C,b,L,0,w,v);var N=Math.max(w+1,z);if(!_&&z>w+1){var A=!1;if(L.size>0)for(var D=c?1:0,V=N-1;V>w;V--)if(L.has(V+D)){var P=this._getFrameMetricsApprox(w),B=this._getFrameMetricsApprox(V),H=B.offset-P.offset;C.push(y.createElement(x,{key:"$sticky_lead",style:t({},k,H)})),this._pushCells(C,b,L,V,V,v);var U=this._getFrameMetricsApprox(z).offset-(B.offset+B.length);C.push(y.createElement(x,{key:"$sticky_trail",style:t({},k,U)})),A=!0;break}if(!A){var W=this._getFrameMetricsApprox(w),$=this._getFrameMetricsApprox(z).offset-(W.offset+W.length);C.push(y.createElement(x,{key:"$lead_spacer",style:t({},k,$)}))}}if(this._pushCells(C,b,L,N,K,v),!this._hasWarned.keys&&E&&(console.warn("VirtualizedList: missing keys for items, make sure to specify a key property on each item or provide a custom keyExtractor.",T),this._hasWarned.keys=!0),!_&&K<I-1){var Y=this._getFrameMetricsApprox(K),j=this.props.getItemLayout?I-1:Math.min(I-1,this._highestMeasuredFrameIndex),q=this._getFrameMetricsApprox(j),J=q.offset+q.length-(Y.offset+Y.length);C.push(y.createElement(x,{key:"$tail_spacer",style:t({},k,J)}))}}else if(l){var X=y.isValidElement(l)?l:y.createElement(l,null);C.push(y.cloneElement(X,{key:'$empty',onLayout:function(t){s._onLayoutEmpty(t),X.props.onLayout&&X.props.onLayout(t)},style:[X.props.style,v]}))}if(h){var G=y.isValidElement(h)?h:y.createElement(h,null);C.push(y.createElement(O,{cellKey:this._getCellKey()+'-footer',key:"$footer"},y.createElement(x,{onLayout:this._onLayoutFooter,style:S.compose(v,this.props.ListFooterComponentStyle)},G)))}var Q=n({},this.props,{onContentSizeChange:this._onContentSizeChange,onLayout:this._onLayout,onScroll:this._onScroll,onScrollBeginDrag:this._onScrollBeginDrag,onScrollEndDrag:this._onScrollEndDrag,onMomentumScrollEnd:this._onMomentumScrollEnd,scrollEventThrottle:this.props.scrollEventThrottle,invertStickyHeaders:void 0!==this.props.invertStickyHeaders?this.props.invertStickyHeaders:this.props.inverted,stickyHeaderIndices:b});v&&(Q.style=[v,this.props.style]),this._hasMore=this.state.last<this.props.getItemCount(this.props.data)-1;var Z=y.cloneElement((this.props.renderScrollComponent||this._defaultRenderScrollComponent)(Q),{ref:this._captureScrollRef},C);return this.props.debug?y.createElement(x,{style:F.debug},Z,this._renderDebugOverlay()):Z}},{key:"componentDidUpdate",value:function(t){var s=this.props,n=s.data,o=s.extraData;n===t.data&&o===t.extraData||(this._hasDataChangedSinceEndReached=!0,this._viewabilityTuples.forEach(function(t){t.viewabilityHelper.resetViewableIndices()})),this._scheduleCellsToRenderUpdate()}},{key:"_computeBlankness",value:function(){this._fillRateHelper.computeBlankness(this.props,this.state,this._scrollMetrics)}},{key:"_onCellLayout",value:function(t,s,n){var o=t.nativeEvent.layout,l={offset:this._selectOffset(o),length:this._selectLength(o),index:n,inLayout:!0},h=this._frames[s];h&&l.offset===h.offset&&l.length===h.length&&n===h.index?this._frames[s].inLayout=!0:(this._totalCellLength+=l.length-(h?h.length:0),this._totalCellsMeasured+=h?0:1,this._averageCellLength=this._totalCellLength/this._totalCellsMeasured,this._frames[s]=l,this._highestMeasuredFrameIndex=Math.max(this._highestMeasuredFrameIndex,n),this._scheduleCellsToRenderUpdate());var c=this._cellKeysToChildListKeys.get(s);if(c){var p=c,u=Array.isArray(p),f=0;for(p=u?p:p["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var _;if(u){if(f>=p.length)break;_=p[f++]}else{if((f=p.next()).done)break;_=f.value}var v=_,y=this._nestedChildLists.get(v);y&&y.ref&&y.ref.measureLayoutRelativeToContainingList()}}this._computeBlankness()}},{key:"measureLayoutRelativeToContainingList",value:function(){var t=this;try{M.measureLayout(C.findNodeHandle(this),C.findNodeHandle(this.context.virtualizedList.getOutermostParentListRef()),function(t){console.warn("VirtualizedList: Encountered an error while measuring a list's offset from its containing VirtualizedList.")},function(s,n,o,l){t._offsetFromParentVirtualizedList=t._selectOffset({x:s,y:n}),t._scrollMetrics.contentLength=t._selectLength({width:o,height:l});var h=t._convertParentScrollMetrics(t.context.virtualizedList.getScrollMetrics());t._scrollMetrics.visibleLength=h.visibleLength,t._scrollMetrics.offset=h.offset})}catch(t){console.warn('measureLayoutRelativeToContainingList threw an error',t.stack)}}},{key:"_renderDebugOverlay",value:function(){for(var t=this._scrollMetrics.visibleLength/this._scrollMetrics.contentLength,s=[],n=this.props.getItemCount(this.props.data),o=0;o<n;o++){var l=this._getFrameMetricsApprox(o);l.inLayout&&s.push(l)}var h=this._getFrameMetricsApprox(this.state.first).offset,c=this._getFrameMetricsApprox(this.state.last),p=c.offset+c.length-h,u=this._scrollMetrics.offset,f=this._scrollMetrics.visibleLength;return y.createElement(x,{style:[F.debugOverlayBase,F.debugOverlay]},s.map(function(s,n){return y.createElement(x,{key:'f'+n,style:[F.debugOverlayBase,F.debugOverlayFrame,{top:s.offset*t,height:s.length*t}]})}),y.createElement(x,{style:[F.debugOverlayBase,F.debugOverlayFrameLast,{top:h*t,height:p*t}]}),y.createElement(x,{style:[F.debugOverlayBase,F.debugOverlayFrameVis,{top:u*t,height:f*t}]}))}},{key:"_selectLength",value:function(t){return this.props.horizontal?t.width:t.height}},{key:"_selectOffset",value:function(t){return this.props.horizontal?t.x:t.y}},{key:"_maybeCallOnEndReached",value:function(){var t=this.props,s=t.data,n=t.getItemCount,o=t.onEndReached,l=t.onEndReachedThreshold,h=this._scrollMetrics,c=h.contentLength,p=h.visibleLength,u=c-p-h.offset;o&&this.state.last===n(s)-1&&u<l*p&&(this._hasDataChangedSinceEndReached||this._scrollMetrics.contentLength!==this._sentEndForContentLength)&&(this._hasDataChangedSinceEndReached=!1,this._sentEndForContentLength=this._scrollMetrics.contentLength,o({distanceFromEnd:u}))}},{key:"_scheduleCellsToRenderUpdate",value:function(){var t=this.state,s=t.first,n=t.last,o=this._scrollMetrics,l=o.offset,h=o.visibleLength,c=o.velocity,p=this.props.getItemCount(this.props.data),u=!1,f=this.props.onEndReachedThreshold*h/2;if(s>0){var _=l-this._getFrameMetricsApprox(s).offset;u=u||_<0||c<-2&&_<f}if(n<p-1){var v=this._getFrameMetricsApprox(n).offset-(l+h);u=u||v<0||c>2&&v<f}if(u&&this._averageCellLength)return this._updateCellsToRenderBatcher.dispose({abort:!0}),void this._updateCellsToRender();this._updateCellsToRenderBatcher.schedule()}},{key:"_updateViewableItems",value:function(t){var s=this,n=this.props.getItemCount;this._viewabilityTuples.forEach(function(o){o.viewabilityHelper.onUpdate(n(t),s._scrollMetrics.offset,s._scrollMetrics.visibleLength,s._getFrameMetrics,s._createViewToken,o.onViewableItemsChanged,s.state)})}}],[{key:"getDerivedStateFromProps",value:function(t,s){var n=t.data,o=t.getItemCount,l=t.maxToRenderPerBatch;return{first:Math.max(0,Math.min(s.first,o(n)-1-l)),last:Math.max(0,Math.min(s.last,o(n)-1))}}}]),z})(y.PureComponent);z.defaultProps={disableVirtualization:!1,horizontal:!1,initialNumToRender:10,keyExtractor:function(t,s){return null!=t.key?t.key:(E=!0,t.type&&t.type.displayName&&(T=t.type.displayName),String(s))},maxToRenderPerBatch:10,onEndReachedThreshold:2,scrollEventThrottle:50,updateCellsBatchingPeriod:50,windowSize:21},z.contextTypes={virtualizedCell:v.shape({cellKey:v.string}),virtualizedList:v.shape({getScrollMetrics:v.func,horizontal:v.bool,getOutermostParentListRef:v.func,getNestedChildState:v.func,registerAsNestedChild:v.func,unregisterAsNestedChild:v.func})},z.childContextTypes={virtualizedList:v.shape({getScrollMetrics:v.func,horizontal:v.bool,getOutermostParentListRef:v.func,getNestedChildState:v.func,registerAsNestedChild:v.func,unregisterAsNestedChild:v.func})};var K=(function(t){function c(){var t,s;o(this,c);for(var n=arguments.length,p=new Array(n),u=0;u<n;u++)p[u]=arguments[u];return(s=l(this,(t=h(c)).call.apply(t,[this].concat(p)))).state={separatorProps:{highlighted:!1,leadingItem:s.props.item}},s._separators={highlight:function(){var t=s.props,n=t.cellKey,o=t.prevCellKey;s.props.onUpdateSeparators([n,o],{highlighted:!0})},unhighlight:function(){var t=s.props,n=t.cellKey,o=t.prevCellKey;s.props.onUpdateSeparators([n,o],{highlighted:!1})},updateProps:function(t,n){var o=s.props,l=o.cellKey,h=o.prevCellKey;s.props.onUpdateSeparators(['leading'===t?h:l],n)}},s}return u(c,t),p(c,[{key:"getChildContext",value:function(){return{virtualizedCell:{cellKey:this.props.cellKey}}}},{key:"updateSeparatorProps",value:function(t){this.setState(function(s){return{separatorProps:n({},s.separatorProps,t)}})}},{key:"componentWillUnmount",value:function(){this.props.onUnmount(this.props.cellKey)}},{key:"render",value:function(){var t=this.props,n=t.CellRendererComponent,o=t.ItemSeparatorComponent,l=t.fillRateHelper,h=t.horizontal,c=t.item,p=t.index,u=t.inversionStyle,f=t.isSelected,_=t.parentProps,v=_.renderItem,C=_.getItemLayout;w(v,'no renderItem!');var L=v({item:c,index:p,isSelected:f,separators:this._separators}),b=!C||_.debug||l.enabled()?this.props.onLayout:void 0,S=o&&y.createElement(o,this.state.separatorProps),M=u?h?[{flexDirection:'row-reverse'},u]:[{flexDirection:'column-reverse'},u]:h?[{flexDirection:'row'},u]:u;return n?y.createElement(n,s({},this.props,{style:M,onLayout:b}),L,S):y.createElement(x,{style:M,onLayout:b},L,S)}}]),c})(y.Component);K.childContextTypes={virtualizedCell:v.shape({cellKey:v.string})};var O=(function(t){function s(){return o(this,s),l(this,h(s).apply(this,arguments))}return u(s,t),p(s,[{key:"getChildContext",value:function(){return{virtualizedCell:{cellKey:this.props.cellKey}}}},{key:"render",value:function(){return this.props.children}}]),s})(y.Component);O.childContextTypes={virtualizedCell:v.shape({cellKey:v.string})};var F=S.create({verticallyInverted:{transform:[{scaleY:-1}]},horizontallyInverted:{transform:[{scaleX:-1}]},debug:{flex:1},debugOverlayBase:{position:'absolute',top:0,right:0},debugOverlay:{bottom:0,width:20,borderColor:'blue',borderWidth:1},debugOverlayFrame:{left:0,backgroundColor:'orange'},debugOverlayFrameLast:{left:0,borderColor:'green',borderWidth:2},debugOverlayFrameVis:{left:0,borderColor:'red',borderWidth:2}});m.exports=z},258,[11,41,10,1,3,6,5,2,7,259,260,74,136,139,43,261,262,140,122,159,270,129,36,20,78,271]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),s=(function(){function s(n,l){t(this,s),this._delay=l,this._callback=n}return n(s,[{key:"dispose",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{abort:!1};this._taskHandle&&(this._taskHandle.cancel(),t.abort||this._callback(),this._taskHandle=null)}},{key:"schedule",value:function(){var t=this;if(!this._taskHandle){var n=setTimeout(function(){t._taskHandle=l.runAfterInteractions(function(){t._taskHandle=null,t._callback()})},this._delay);this._taskHandle={cancel:function(){return clearTimeout(n)}}}}}]),s})();m.exports=s},259,[1,2,235]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),_=r(d[4]),h=function t(){s(this,t),this.any_blank_count=0,this.any_blank_ms=0,this.any_blank_speed_sum=0,this.mostly_blank_count=0,this.mostly_blank_ms=0,this.pixels_blank=0,this.pixels_sampled=0,this.pixels_scrolled=0,this.total_time_spent=0,this.sample_count=0},o=[],u=10,f=null,c=(function(){function c(t){s(this,c),this._anyBlankStartTime=null,this._enabled=!1,this._info=new h,this._mostlyBlankStartTime=null,this._samplesStartTime=null,this._getFrameMetrics=t,this._enabled=(f||0)>Math.random(),this._resetData()}return n(c,null,[{key:"addListener",value:function(t){return _(null!==f,'Call `FillRateHelper.setSampleRate` before `addListener`.'),o.push(t),{remove:function(){o=o.filter(function(n){return t!==n})}}}},{key:"setSampleRate",value:function(t){f=t}},{key:"setMinSampleCount",value:function(t){u=t}}]),n(c,[{key:"activate",value:function(){this._enabled&&null==this._samplesStartTime&&(this._samplesStartTime=l())}},{key:"deactivateAndFlush",value:function(){if(this._enabled){var n=this._samplesStartTime;if(null!=n)if(this._info.sample_count<u)this._resetData();else{var s=l()-n,_=t({},this._info,{total_time_spent:s});o.forEach(function(t){return t(_)}),this._resetData()}}}},{key:"computeBlankness",value:function(t,n,s){if(!this._enabled||0===t.getItemCount(t.data)||null==this._samplesStartTime)return 0;var _=s.dOffset,h=s.offset,o=s.velocity,u=s.visibleLength;this._info.sample_count++,this._info.pixels_sampled+=Math.round(u),this._info.pixels_scrolled+=Math.round(Math.abs(_));var f=Math.round(1e3*Math.abs(o)),c=l();null!=this._anyBlankStartTime&&(this._info.any_blank_ms+=c-this._anyBlankStartTime),this._anyBlankStartTime=null,null!=this._mostlyBlankStartTime&&(this._info.mostly_blank_ms+=c-this._mostlyBlankStartTime),this._mostlyBlankStartTime=null;for(var k=0,y=n.first,p=this._getFrameMetrics(y);y<=n.last&&(!p||!p.inLayout);)p=this._getFrameMetrics(y),y++;p&&y>0&&(k=Math.min(u,Math.max(0,p.offset-h)));for(var b=0,v=n.last,S=this._getFrameMetrics(v);v>=n.first&&(!S||!S.inLayout);)S=this._getFrameMetrics(v),v--;if(S&&v<t.getItemCount(t.data)-1){var M=S.offset+S.length;b=Math.min(u,Math.max(0,h+u-M))}var T=Math.round(k+b),B=T/u;return B>0?(this._anyBlankStartTime=c,this._info.any_blank_speed_sum+=f,this._info.any_blank_count++,this._info.pixels_blank+=T,B>.5&&(this._mostlyBlankStartTime=c,this._info.mostly_blank_count++)):(f<.01||Math.abs(_)<1)&&this.deactivateAndFlush(),B}},{key:"enabled",value:function(){return this._enabled}},{key:"_resetData",value:function(){this._anyBlankStartTime=null,this._info=new h,this._mostlyBlankStartTime=null,this._samplesStartTime=null}}]),c})();m.exports=c},260,[10,2,1,75,78]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]),s=r(d[1]),o=r(d[2]),h=r(d[3]),f=r(d[4]),p=r(d[5]),u=(r(d[6]),r(d[7])),v=(r(d[8]).NativeComponent,r(d[9])),c=r(d[10]),l=r(d[11]).getViewManagerConfig('AndroidSwipeRefreshLayout');t=l?l.Constants:{SIZE:{}};var R=v('AndroidSwipeRefreshLayout'),_=(function(t){function v(){var t,n;s(this,v);for(var o=arguments.length,p=new Array(o),u=0;u<o;u++)p[u]=arguments[u];return(n=h(this,(t=f(v)).call.apply(t,[this].concat(p))))._nativeRef=null,n._lastNativeRefreshing=!1,n._onRefresh=function(){n._lastNativeRefreshing=!0,n.props.onRefresh&&n.props.onRefresh(),n.forceUpdate()},n}return p(v,t),o(v,[{key:"componentDidMount",value:function(){this._lastNativeRefreshing=this.props.refreshing}},{key:"componentDidUpdate",value:function(t){this.props.refreshing!==t.refreshing?this._lastNativeRefreshing=this.props.refreshing:this.props.refreshing!==this._lastNativeRefreshing&&(c(this._nativeRef).setNativeProps({refreshing:this.props.refreshing}),this._lastNativeRefreshing=this.props.refreshing)}},{key:"render",value:function(){var t=this;return u.createElement(R,n({},this.props,{ref:function(n){t._nativeRef=n},onRefresh:this._onRefresh}))}}]),v})(u.Component);_.SIZE=t.SIZE,m.exports=_},261,[41,1,2,3,6,7,74,139,43,162,189,122]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n,o,s=r(d[0]),l=r(d[1]),c=r(d[2]),h=(r(d[3]),r(d[4])),p=r(d[5]),u=r(d[6]),f=r(d[7]),y=r(d[8]),S=r(d[9]),R=(r(d[10]),r(d[11])),_=r(d[12]),v=(r(d[13]),r(d[14])),w=r(d[15]),H=r(d[16]),V=r(d[17]);t=H('RCTScrollView'),o=H('AndroidHorizontalScrollView'),n=H('AndroidHorizontalScrollContentView');var T=R({displayName:'ScrollView',mixins:[u.Mixin],_scrollAnimatedValue:new c.Value(0),_scrollAnimatedValueAttachment:null,_stickyHeaderRefs:new Map,_headerLayoutYs:new Map,getInitialState:function(){return l({},this.scrollResponderMixinGetInitialState(),{layoutHeight:null})},UNSAFE_componentWillMount:function(){this._scrollAnimatedValue=new c.Value(this.props.contentOffset?this.props.contentOffset.y:0),this._scrollAnimatedValue.setOffset(this.props.contentInset?this.props.contentInset.top:0),this._stickyHeaderRefs=new Map,this._headerLayoutYs=new Map},componentDidMount:function(){this._updateAnimatedNodeAttachment()},componentDidUpdate:function(){this._updateAnimatedNodeAttachment()},componentWillUnmount:function(){this._scrollAnimatedValueAttachment&&this._scrollAnimatedValueAttachment.detach()},setNativeProps:function(t){this._scrollViewRef&&this._scrollViewRef.setNativeProps(t)},getScrollResponder:function(){return this},getScrollableNode:function(){return p.findNodeHandle(this._scrollViewRef)},getInnerViewNode:function(){return p.findNodeHandle(this._innerViewRef)},scrollTo:function(t,n,o){if('number'==typeof t)console.warn("`scrollTo(y, x, animated)` is deprecated. Use `scrollTo({x: 5, y: 5, animated: true})` instead.");else{var s=t||{};n=s.x,t=s.y,o=s.animated}this.getScrollResponder().scrollResponderScrollTo({x:n||0,y:t||0,animated:!1!==o})},scrollToEnd:function(t){var n=!1!==(t&&t.animated);this.getScrollResponder().scrollResponderScrollToEnd({animated:n})},scrollWithoutAnimationTo:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0;console.warn('`scrollWithoutAnimationTo` is deprecated. Use `scrollTo` instead'),this.scrollTo({x:n,y:t,animated:!1})},flashScrollIndicators:function(){this.getScrollResponder().scrollResponderFlashScrollIndicators()},_getKeyForIndex:function(t,n){var o=n[t];return o&&o.key},_updateAnimatedNodeAttachment:function(){this._scrollAnimatedValueAttachment&&this._scrollAnimatedValueAttachment.detach(),this.props.stickyHeaderIndices&&this.props.stickyHeaderIndices.length>0&&(this._scrollAnimatedValueAttachment=c.attachNativeEvent(this._scrollViewRef,'onScroll',[{nativeEvent:{contentOffset:{y:this._scrollAnimatedValue}}}]))},_setStickyHeaderRef:function(t,n){n?this._stickyHeaderRefs.set(t,n):this._stickyHeaderRefs.delete(t)},_onStickyHeaderLayout:function(t,n,o){if(this.props.stickyHeaderIndices){var s=h.Children.toArray(this.props.children);if(o===this._getKeyForIndex(t,s)){var l=n.nativeEvent.layout.y;this._headerLayoutYs.set(o,l);var c=this.props.stickyHeaderIndices.indexOf(t),p=this.props.stickyHeaderIndices[c-1];if(null!=p){var u=this._stickyHeaderRefs.get(this._getKeyForIndex(p,s));u&&u.setNextHeaderY(l)}}}},_handleKeyDown:function(t){if(this.props.onKeyDown)this.props.onKeyDown(t);else t.nativeEvent.key},_handleScrollByKeyDown:function(t,n){var o=t.contentSize.width-t.layoutMeasurement.width,s=t.contentSize.height-t.layoutMeasurement.height;this.scrollTo({x:Math.max(0,Math.min(o,n.x)),y:Math.max(0,Math.min(s,n.y))})},_handleScroll:function(t){'on-drag'===this.props.keyboardDismissMode&&this.state.isTouching&&_(),this.scrollResponderHandleScroll(t)},_handleLayout:function(t){this.props.invertStickyHeaders&&this.setState({layoutHeight:t.nativeEvent.layout.height}),this.props.onLayout&&this.props.onLayout(t)},_handleContentOnLayout:function(t){var n=t.nativeEvent.layout,o=n.width,s=n.height;this.props.onContentSizeChange&&this.props.onContentSizeChange(o,s)},_scrollViewRef:null,_setScrollViewRef:function(t){this._scrollViewRef=t},_innerViewRef:null,_setInnerViewRef:function(t){this._innerViewRef=t},render:function(){var c,p,u=this;this.props.horizontal?(c=o,p=n):(c=t,p=S),v(void 0!==c,'ScrollViewClass must not be undefined'),v(void 0!==p,'ScrollContentContainerViewClass must not be undefined');var y=[this.props.horizontal&&E.contentContainerHorizontal,this.props.contentContainerStyle],R={};this.props.onContentSizeChange&&(R={onLayout:this._handleContentOnLayout});var _=this.props.stickyHeaderIndices,H=_&&_.length>0,T=H&&h.Children.toArray(this.props.children),A=H?T.map(function(t,n){var o=t?_.indexOf(n):-1;if(o>-1){var s=t.key,l=_[o+1];return h.createElement(f,{key:s,ref:function(t){return u._setStickyHeaderRef(s,t)},nextHeaderLayoutY:u._headerLayoutYs.get(u._getKeyForIndex(l,T)),onLayout:function(t){return u._onStickyHeaderLayout(n,t,s)},scrollAnimatedValue:u._scrollAnimatedValue,inverted:u.props.invertStickyHeaders,scrollViewHeight:u.state.layoutHeight},t)}return t}):this.props.children,C=h.createElement(p,s({},R,{ref:this._setInnerViewRef,style:y,removeClippedSubviews:!H&&this.props.removeClippedSubviews,collapsable:!1}),A),x=void 0!==this.props.alwaysBounceHorizontal?this.props.alwaysBounceHorizontal:this.props.horizontal,k=void 0!==this.props.alwaysBounceVertical?this.props.alwaysBounceVertical:!this.props.horizontal,M=!!this.props.DEPRECATED_sendUpdatedChildFrames,I=this.props.horizontal?E.baseHorizontal:E.baseVertical,z=l({},this.props,{alwaysBounceHorizontal:x,alwaysBounceVertical:k,style:[I,this.props.style],onContentSizeChange:null,onKeyDown:this._handleKeyDown,onLayout:this._handleLayout,onMomentumScrollBegin:this.scrollResponderHandleMomentumScrollBegin,onMomentumScrollEnd:this.scrollResponderHandleMomentumScrollEnd,onResponderGrant:this.scrollResponderHandleResponderGrant,onResponderReject:this.scrollResponderHandleResponderReject,onResponderRelease:this.scrollResponderHandleResponderRelease,onResponderTerminate:this.scrollResponderHandleTerminate,onResponderTerminationRequest:this.scrollResponderHandleTerminationRequest,onScroll:this._handleScroll,onScrollBeginDrag:this.scrollResponderHandleScrollBeginDrag,onScrollEndDrag:this.scrollResponderHandleScrollEndDrag,onScrollShouldSetResponder:this.scrollResponderHandleScrollShouldSetResponder,onStartShouldSetResponder:this.scrollResponderHandleStartShouldSetResponder,onStartShouldSetResponderCapture:this.scrollResponderHandleStartShouldSetResponderCapture,onTouchEnd:this.scrollResponderHandleTouchEnd,onTouchMove:this.scrollResponderHandleTouchMove,onTouchStart:this.scrollResponderHandleTouchStart,onTouchCancel:this.scrollResponderHandleTouchCancel,scrollBarThumbImage:V(this.props.scrollBarThumbImage),scrollEventThrottle:H?1:this.props.scrollEventThrottle,sendMomentumEvents:!(!this.props.onMomentumScrollBegin&&!this.props.onMomentumScrollEnd),DEPRECATED_sendUpdatedChildFrames:M,snapToStart:!1!==this.props.snapToStart,snapToEnd:!1!==this.props.snapToEnd,pagingEnabled:this.props.pagingEnabled||null!=this.props.snapToInterval||null!=this.props.snapToOffsets}),D=this.props.decelerationRate;null!=D&&(z.decelerationRate=w(D));var b=this.props.refreshControl;return b?h.cloneElement(b,{style:z.style},h.createElement(c,s({},z,{style:I,ref:this._setScrollViewRef}),C)):h.createElement(c,s({},z,{ref:this._setScrollViewRef}),C)}}),E=y.create({baseVertical:{flexGrow:1,flexShrink:1,flexDirection:'column',overflow:'scroll'},baseHorizontal:{flexGrow:1,flexShrink:1,flexDirection:'row',overflow:'scroll'},contentContainerHorizontal:{flexDirection:'row'}});m.exports=T},262,[41,10,228,74,139,43,263,267,140,159,268,219,197,129,20,269,162,168]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),s=r(d[1]),n=r(d[2]),l=r(d[3]),t=r(d[4]),c=r(d[5]),p=r(d[6]),h=r(d[7]),u=r(d[8]),S=r(d[9]),b=r(d[10]).ScrollViewManager,R={Mixin:{_subscriptionKeyboardWillShow:null,_subscriptionKeyboardWillHide:null,_subscriptionKeyboardDidShow:null,_subscriptionKeyboardDidHide:null,scrollResponderMixinGetInitialState:function(){return{isTouching:!1,lastMomentumScrollBeginTime:0,lastMomentumScrollEndTime:0,observedScrollSinceBecomingResponder:!1,becameResponderWhileAnimating:!1}},scrollResponderHandleScrollShouldSetResponder:function(){return this.state.isTouching},scrollResponderHandleStartShouldSetResponder:function(o){var s=t.currentlyFocusedField();return'handled'===this.props.keyboardShouldPersistTaps&&null!=s&&o.target!==s},scrollResponderHandleStartShouldSetResponderCapture:function(o){if(this.scrollResponderIsAnimating())return!0;var s=t.currentlyFocusedField(),n=this.props.keyboardShouldPersistTaps;return!(n&&'never'!==n||null==s||!o.target||t.isTextInput(o.target))},scrollResponderHandleResponderReject:function(){},scrollResponderHandleTerminationRequest:function(){return!this.state.observedScrollSinceBecomingResponder},scrollResponderHandleTouchEnd:function(o){var s=o.nativeEvent;this.state.isTouching=0!==s.touches.length,this.props.onTouchEnd&&this.props.onTouchEnd(o)},scrollResponderHandleTouchCancel:function(o){this.state.isTouching=!1,this.props.onTouchCancel&&this.props.onTouchCancel(o)},scrollResponderHandleResponderRelease:function(o){this.props.onResponderRelease&&this.props.onResponderRelease(o);var s=t.currentlyFocusedField();!0===this.props.keyboardShouldPersistTaps||'always'===this.props.keyboardShouldPersistTaps||null==s||o.target===s||this.state.observedScrollSinceBecomingResponder||this.state.becameResponderWhileAnimating||(this.props.onScrollResponderKeyboardDismissed&&this.props.onScrollResponderKeyboardDismissed(o),t.blurTextInput(s))},scrollResponderHandleScroll:function(o){this.state.observedScrollSinceBecomingResponder=!0,this.props.onScroll&&this.props.onScroll(o)},scrollResponderHandleResponderGrant:function(o){this.state.observedScrollSinceBecomingResponder=!1,this.props.onResponderGrant&&this.props.onResponderGrant(o),this.state.becameResponderWhileAnimating=this.scrollResponderIsAnimating()},scrollResponderHandleScrollBeginDrag:function(o){s.beginScroll(),this.props.onScrollBeginDrag&&this.props.onScrollBeginDrag(o)},scrollResponderHandleScrollEndDrag:function(o){var n=o.nativeEvent.velocity;this.scrollResponderIsAnimating()||n&&(0!==n.x||0!==n.y)||s.endScroll(),this.props.onScrollEndDrag&&this.props.onScrollEndDrag(o)},scrollResponderHandleMomentumScrollBegin:function(o){this.state.lastMomentumScrollBeginTime=u(),this.props.onMomentumScrollBegin&&this.props.onMomentumScrollBegin(o)},scrollResponderHandleMomentumScrollEnd:function(o){s.endScroll(),this.state.lastMomentumScrollEndTime=u(),this.props.onMomentumScrollEnd&&this.props.onMomentumScrollEnd(o)},scrollResponderHandleTouchStart:function(o){this.state.isTouching=!0,this.props.onTouchStart&&this.props.onTouchStart(o)},scrollResponderHandleTouchMove:function(o){this.props.onTouchMove&&this.props.onTouchMove(o)},scrollResponderIsAnimating:function(){return u()-this.state.lastMomentumScrollEndTime<16||this.state.lastMomentumScrollEndTime<this.state.lastMomentumScrollBeginTime},scrollResponderGetScrollableNode:function(){return this.getScrollableNode?this.getScrollableNode():l.findNodeHandle(this)},scrollResponderScrollTo:function(o,s,n){if('number'==typeof o)console.warn('`scrollResponderScrollTo(x, y, animated)` is deprecated. Use `scrollResponderScrollTo({x: 5, y: 5, animated: true})` instead.');else{var l=o||{};o=l.x,s=l.y,n=l.animated}c.dispatchViewManagerCommand(h(this.scrollResponderGetScrollableNode()),c.getViewManagerConfig('RCTScrollView').Commands.scrollTo,[o||0,s||0,!1!==n])},scrollResponderScrollToEnd:function(o){var s=!1!==(o&&o.animated);c.dispatchViewManagerCommand(this.scrollResponderGetScrollableNode(),c.getViewManagerConfig('RCTScrollView').Commands.scrollToEnd,[s])},scrollResponderScrollWithoutAnimationTo:function(o,s){console.warn('`scrollResponderScrollWithoutAnimationTo` is deprecated. Use `scrollResponderScrollTo` instead'),this.scrollResponderScrollTo({x:o,y:s,animated:!1})},scrollResponderZoomTo:function(o,s){p(b&&b.zoomToRect,'zoomToRect is not implemented'),'animated'in o?(s=o.animated,delete o.animated):void 0!==s&&console.warn('`scrollResponderZoomTo` `animated` argument is deprecated. Use `options.animated` instead'),b.zoomToRect(this.scrollResponderGetScrollableNode(),o,!1!==s)},scrollResponderFlashScrollIndicators:function(){c.dispatchViewManagerCommand(this.scrollResponderGetScrollableNode(),c.getViewManagerConfig('RCTScrollView').Commands.flashScrollIndicators,[])},scrollResponderScrollNativeHandleToKeyboard:function(o,s,n){this.additionalScrollOffset=s||0,this.preventNegativeScrollOffset=!!n,c.measureLayout(o,l.findNodeHandle(this.getInnerViewNode()),this.scrollResponderTextInputFocusError,this.scrollResponderInputMeasureAndScrollToKeyboard)},scrollResponderInputMeasureAndScrollToKeyboard:function(s,n,l,t){var c=o.get('window').height;this.keyboardWillOpenTo&&(c=this.keyboardWillOpenTo.endCoordinates.screenY);var p=n-c+t+this.additionalScrollOffset;this.preventNegativeScrollOffset&&(p=Math.max(0,p)),this.scrollResponderScrollTo({x:0,y:p,animated:!0}),this.additionalOffset=0,this.preventNegativeScrollOffset=!1},scrollResponderTextInputFocusError:function(o){console.error('Error measuring text field: ',o)},UNSAFE_componentWillMount:function(){var o=this.props.keyboardShouldPersistTaps;S('boolean'!=typeof o,"'keyboardShouldPersistTaps={"+o+"}' is deprecated. Use 'keyboardShouldPersistTaps=\""+(o?'always':'never')+"\"' instead"),this.keyboardWillOpenTo=null,this.additionalScrollOffset=0,this._subscriptionKeyboardWillShow=n.addListener('keyboardWillShow',this.scrollResponderKeyboardWillShow),this._subscriptionKeyboardWillHide=n.addListener('keyboardWillHide',this.scrollResponderKeyboardWillHide),this._subscriptionKeyboardDidShow=n.addListener('keyboardDidShow',this.scrollResponderKeyboardDidShow),this._subscriptionKeyboardDidHide=n.addListener('keyboardDidHide',this.scrollResponderKeyboardDidHide)},componentWillUnmount:function(){null!=this._subscriptionKeyboardWillShow&&this._subscriptionKeyboardWillShow.remove(),null!=this._subscriptionKeyboardWillHide&&this._subscriptionKeyboardWillHide.remove(),null!=this._subscriptionKeyboardDidShow&&this._subscriptionKeyboardDidShow.remove(),null!=this._subscriptionKeyboardDidHide&&this._subscriptionKeyboardDidHide.remove()},scrollResponderKeyboardWillShow:function(o){this.keyboardWillOpenTo=o,this.props.onKeyboardWillShow&&this.props.onKeyboardWillShow(o)},scrollResponderKeyboardWillHide:function(o){this.keyboardWillOpenTo=null,this.props.onKeyboardWillHide&&this.props.onKeyboardWillHide(o)},scrollResponderKeyboardDidShow:function(o){o&&(this.keyboardWillOpenTo=o),this.props.onKeyboardDidShow&&this.props.onKeyboardDidShow(o)},scrollResponderKeyboardDidHide:function(o){this.keyboardWillOpenTo=null,this.props.onKeyboardDidHide&&this.props.onKeyboardDidHide(o)}}};m.exports=R},263,[142,264,265,43,130,122,20,189,75,78,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n={setGlobalOptions:function(n){if(void 0!==n.debug&&o(t.FrameRateLogger,'Trying to debug FrameRateLogger without the native module!'),t.FrameRateLogger){var c={debug:!!n.debug,reportStackTraces:!!n.reportStackTraces};Object.freeze(c),Object.seal(c),t.FrameRateLogger.setGlobalOptions(c)}},setContext:function(o){t.FrameRateLogger&&t.FrameRateLogger.setContext(o)},beginScroll:function(){t.FrameRateLogger&&t.FrameRateLogger.beginScroll()},endScroll:function(){t.FrameRateLogger&&t.FrameRateLogger.endScroll()}};m.exports=n},264,[38,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),t=r(d[2]),u=r(d[3]).KeyboardObserver,s=r(d[4]),c={addListener:function(o,t){n(!1,'Dummy method used for documentation')},removeListener:function(o,t){n(!1,'Dummy method used for documentation')},removeAllListeners:function(o){n(!1,'Dummy method used for documentation')},dismiss:function(){n(!1,'Dummy method used for documentation')},scheduleLayoutAnimation:function(o){n(!1,'Dummy method used for documentation')}};(c=new t(u)).dismiss=s,c.scheduleLayoutAnimation=function(n){var t=n.duration,u=n.easing;null!=t&&0!==t&&o.configureNext({duration:t,update:{duration:t,type:null!=u&&o.Types[u]||'keyboard'}})},m.exports=c},265,[266,20,87,38,197]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]);function t(t,s){var o;n.configureNextLayoutAnimation(t,null!=(o=s)?o:function(){},function(){})}function s(n,t,s){return{duration:n,create:{type:t,property:s},update:{type:t},delete:{type:t,property:s}}}var o={easeInEaseOut:s(300,'easeInEaseOut','opacity'),linear:s(500,'linear','opacity'),spring:{duration:700,create:{type:'linear',property:'opacity'},update:{type:'spring',springDamping:.4},delete:{type:'linear',property:'opacity'}}},p={configureNext:t,create:s,Types:Object.freeze({spring:'spring',linear:'linear',easeInEaseOut:'easeInEaseOut',easeIn:'easeIn',easeOut:'easeOut',keyboard:'keyboard'}),Properties:Object.freeze({opacity:'opacity',scaleX:'scaleX',scaleY:'scaleY',scaleXY:'scaleXY'}),checkConfig:function(){console.error('LayoutAnimation.checkConfig(...) has been disabled.')},Presets:o,easeInEaseOut:t.bind(null,o.easeInEaseOut),linear:t.bind(null,o.linear),spring:t.bind(null,o.spring)};m.exports=p},266,[122]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),u=r(d[3]),s=r(d[4]),l=r(d[5]),p=r(d[6]),h=r(d[7]),y=r(d[8]),c=l.createAnimatedComponent(y),v=(function(l){function h(){var n,s;t(this,h);for(var l=arguments.length,y=new Array(l),c=0;c<l;c++)y[c]=arguments[c];return(s=o(this,(n=u(h)).call.apply(n,[this].concat(y)))).state={measured:!1,layoutY:0,layoutHeight:0,nextHeaderLayoutY:s.props.nextHeaderLayoutY},s._onLayout=function(t){s.setState({measured:!0,layoutY:t.nativeEvent.layout.y,layoutHeight:t.nativeEvent.layout.height}),s.props.onLayout(t);var n=p.Children.only(s.props.children);n.props.onLayout&&n.props.onLayout(t)},s}return s(h,l),n(h,[{key:"setNextHeaderY",value:function(t){this.setState({nextHeaderLayoutY:t})}},{key:"render",value:function(){var t=this.props,n=t.inverted,o=t.scrollViewHeight,u=this.state,s=u.measured,l=u.layoutHeight,h=u.layoutY,y=u.nextHeaderLayoutY,v=[-1,0],L=[0,0];if(s)if(n){if(null!=o){var H=h+l-o;if(H>0){v.push(H),L.push(0),v.push(H+1),L.push(1);var Y=(y||0)-l-o;Y>H&&(v.push(Y,Y+1),L.push(Y-H,Y-H))}}}else{v.push(h),L.push(0);var x=(y||0)-l;x>=h?(v.push(x,x+1),L.push(x-h,x-h)):(v.push(h+1),L.push(1))}var C=this.props.scrollAnimatedValue.interpolate({inputRange:v,outputRange:L}),E=p.Children.only(this.props.children);return p.createElement(c,{collapsable:!1,onLayout:this._onLayout,style:[E.props.style,f.header,{transform:[{translateY:C}]}]},p.cloneElement(E,{style:f.fill,onLayout:void 0}))}}]),h})(p.Component),f=h.create({header:{zIndex:10},fill:{flex:1}});m.exports=v},267,[1,2,3,6,7,228,139,140,159]);
+__d(function(g,r,i,a,m,e,d){var o=r(d[0]),n=r(d[1]),l=r(d[2]),t=r(d[3]),u=r(d[4]),c=(function(c){"use strict";function s(){return o(this,s),l(this,t(s).apply(this,arguments))}return u(s,c),n(s,[{key:"scrollTo",value:function(o,n,l){}},{key:"flashScrollIndicators",value:function(){}},{key:"scrollToEnd",value:function(o){}},{key:"scrollWithoutAnimationTo",value:function(){arguments.length>0&&void 0!==arguments[0]&&arguments[0],arguments.length>1&&void 0!==arguments[1]&&arguments[1]}},{key:"getScrollResponder",value:function(){}},{key:"getScrollableNode",value:function(){}},{key:"getInnerViewNode",value:function(){}},{key:"scrollResponderScrollNativeHandleToKeyboard",value:function(o,n,l){}},{key:"scrollResponderScrollTo",value:function(o,n,l){}}]),s})(r(d[5]).NativeComponent);m.exports=c},268,[1,2,3,6,7,43]);
+__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);m.exports=function(t){return'normal'===t?.985:'fast'===t?.9:t}},269,[74]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),h=(function(){function h(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{viewAreaCoveragePercentThreshold:0};s(this,h),this._hasInteracted=!1,this._timers=new Set,this._viewableIndices=[],this._viewableItems=new Map,this._config=t}return o(h,[{key:"dispose",value:function(){this._timers.forEach(clearTimeout)}},{key:"computeViewableItems",value:function(t,n,s,o,h){var c=this._config,f=c.itemVisiblePercentThreshold,v=c.viewAreaCoveragePercentThreshold,_=null!=v,b=_?v:f;l(null!=b&&null!=f!=(null!=v),'Must set exactly one of itemVisiblePercentThreshold or viewAreaCoveragePercentThreshold');var y=[];if(0===t)return y;var w=-1,I=h||{first:0,last:t-1},p=I.first,k=I.last;l(k<t,'Invalid render range '+JSON.stringify({renderRange:h,itemCount:t}));for(var S=p;S<=k;S++){var T=o(S);if(T){var A=T.offset-n,V=A+T.length;if(A<s&&V>0)w=S,u(_,b,A,V,s,T.length)&&y.push(S);else if(w>=0)break}}return y}},{key:"onUpdate",value:function(t,n,s,o,l,h,u){var c=this;if((!this._config.waitForInteraction||this._hasInteracted)&&0!==t&&o(0)){var f=[];if(t&&(f=this.computeViewableItems(t,n,s,o,u)),this._viewableIndices.length!==f.length||!this._viewableIndices.every(function(t,n){return t===f[n]}))if(this._viewableIndices=f,this._config.minimumViewTime){var v=setTimeout(function(){c._timers.delete(v),c._onUpdateSync(f,h,l)},this._config.minimumViewTime);this._timers.add(v)}else this._onUpdateSync(f,h,l)}}},{key:"resetViewableIndices",value:function(){this._viewableIndices=[]}},{key:"recordInteraction",value:function(){this._hasInteracted=!0}},{key:"_onUpdateSync",value:function(s,o,l){var h=this;s=s.filter(function(t){return h._viewableIndices.includes(t)});var u=this._viewableItems,c=new Map(s.map(function(t){var n=l(t,!0);return[n.key,n]})),f=[],v=c,_=Array.isArray(v),b=0;for(v=_?v:v["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var y;if(_){if(b>=v.length)break;y=v[b++]}else{if((b=v.next()).done)break;y=b.value}var w=n(y,2),I=w[0],p=w[1];u.has(I)||f.push(p)}var k=u,S=Array.isArray(k),T=0;for(k=S?k:k["function"==typeof Symbol?Symbol.iterator:"@@iterator"]();;){var A;if(S){if(T>=k.length)break;A=k[T++]}else{if((T=k.next()).done)break;A=T.value}var V=n(A,2),x=V[0],M=V[1];c.has(x)||f.push(t({},M,{isViewable:!1}))}f.length>0&&(this._viewableItems=c,o({viewableItems:Array.from(c.values()),changed:f,viewabilityConfig:this._config}))}}]),h})();function u(t,n,s,o,l,h){if(f(s,o,l))return!0;var u=c(s,o,l);return 100*(t?u/l:u/h)>=n}function c(t,n,s){var o=Math.min(n,s)-Math.max(t,0);return Math.max(0,o)}function f(t,n,s){return t>=0&&n<=s&&n>t}m.exports=h},270,[10,24,1,2,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]);function s(t,s,f){for(var l=[],o=0,u=0;u<s;u++)for(var h=f(u),v=h.offset+h.length,c=0;c<t.length;c++)if(null==l[c]&&v>=t[c]&&(l[c]=u,o++,c===t.length-1))return n(o===t.length,'bad offsets input, should be in increasing order: %s',JSON.stringify(t)),l;return l}function f(t,n){return n.last-n.first+1-Math.max(0,1+Math.min(n.last,t.last)-Math.max(n.first,t.first))}var l={computeWindowedRenderLimits:function(n,l,o,u){var h=n.data,v=n.getItemCount,c=n.maxToRenderPerBatch,x=n.windowSize,M=v(h);if(0===M)return l;var w=u.offset,b=u.velocity,p=u.visibleLength,C=Math.max(0,w),O=C+p,y=(x-1)*p,L=b>1?'after':b<-1?'before':'none',R=Math.max(0,C-.5*y),S=Math.max(0,O+.5*y);if(o(M-1).offset<R)return{first:Math.max(0,M-1-c),last:M-1};var B=s([R,C,O,S],n.getItemCount(n.data),o),I=t(B,4),J=I[0],N=I[1],T=I[2],_=I[3];J=null==J?0:J,N=null==N?Math.max(0,J):N,_=null==_?M-1:_;for(var k={first:N,last:T=null==T?Math.min(_,N+c-1):T},z=f(l,k);!(N<=J&&T>=_);){var E=z>=c,F=N<=l.first||N>l.last,P=N>J&&(!E||!F),W=T>=l.last||T<l.first,j=T<_&&(!E||!W);if(E&&!P&&!j)break;!P||'after'===L&&j&&W||(F&&z++,N--),!j||'before'===L&&P&&F||(W&&z++,T++)}if(!(T>=N&&N>=0&&T<M&&N>=J&&T<=_&&N<=k.first&&T>=k.last))throw new Error('Bad window calculation '+JSON.stringify({first:N,last:T,itemCount:M,overscanFirst:J,overscanLast:_,visible:k}));return{first:N,last:T}},elementsThatOverlapOffsets:s,newRangeCount:f};m.exports=l},271,[24,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},272,[273,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),o=r(d[1]),t=r(d[2]),u=r(d[3]),c=r(d[4]),s=r(d[5]),l=r(d[6]),h=r(d[7]),f=r(d[8]),p=(r(d[9]),r(d[10])),b=r(d[11]),v=r(d[12]),y=r(d[13]),S=r(d[14]),w=l.ImageLoader,I=r(d[15]),E=1;var L=o({},c,{style:u(t),source:h.oneOfType([h.shape({uri:h.string,headers:h.objectOf(h.string)}),h.number,h.arrayOf(h.shape({uri:h.string,width:h.number,height:h.number,headers:h.objectOf(h.string)}))]),blurRadius:h.number,defaultSource:h.number,loadingIndicatorSource:h.oneOfType([h.shape({uri:h.string}),h.number]),progressiveRenderingEnabled:h.bool,fadeDuration:h.number,onLoadStart:h.func,onError:h.func,onLoad:h.func,onLoadEnd:h.func,testID:h.string,resizeMethod:h.oneOf(['auto','resize','scale']),resizeMode:h.oneOf(['cover','contain','stretch','repeat','center'])});var O=function(n,o){var t,u,c,l,h=S(n.source),p=S(n.defaultSource),w=S(n.loadingIndicatorSource);if(h&&''===h.uri&&console.warn('source.uri should not be an empty string'),n.src&&console.warn('The <Image> component requires a `source` property rather than `src`.'),n.children)throw new Error('The <Image> component cannot contain children. If you want to render content on top of the image, consider using the <ImageBackground> component or absolute positioning.');if(n.defaultSource&&n.loadingIndicatorSource)throw new Error('The <Image> component cannot have defaultSource and loadingIndicatorSource at the same time. Please use either defaultSource or loadingIndicatorSource.');if(!h||h.uri||Array.isArray(h)||(h=null),null!=(null==(t=h)?void 0:t.uri)){var E=h,L=E.width,O=E.height;c=v([{width:L,height:O},z.base,n.style]),l=[{uri:h.uri}]}else c=v([z.base,n.style]),l=h;var T=n.onLoadStart,q=n.onLoad,R=n.onLoadEnd,x=n.onError,A=y(n,{style:c,shouldNotifyLoadEvents:!!(T||q||R||x),src:l,headers:null==(u=h)?void 0:u.headers,defaultSrc:p?p.uri:null,loadingIndicatorSrc:w?w.uri:null,ref:o});return f.createElement(b.Consumer,null,function(n){return n?f.createElement(I,A):f.createElement(s,A)})};(O=f.forwardRef(O)).getSize=function(n,o,t){return w.getSize(n).then(function(n){o(n.width,n.height)}).catch(t||function(){console.warn('Failed to get size for image: '+n)})},O.prefetch=function(n,o){var t=E++;return o&&o(t),w.prefetchImage(n,t)},O.abortPrefetch=function(n){w.abortRequest(n)},O.queryCache=function(o){return n.async(function(t){for(;;)switch(t.prev=t.next){case 0:return t.next=2,n.awrap(w.queryCache(o));case 2:return t.abrupt("return",t.sent);case 3:case"end":return t.stop()}})},O.resolveAssetSource=S,O.propTypes=L;var z=p.create({base:{overflow:'hidden'}});m.exports=O},273,[108,10,145,176,214,274,38,136,139,43,140,160,129,178,168,275]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0])('RCTImageView');m.exports=t},274,[162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0])('RCTTextInlineImage');m.exports=t},275,[162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},276,[262,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},277,[278,255]);
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+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),c=r(d[5]),p=r(d[6]),u=r(d[7]),h=(r(d[8]),r(d[9])),f=r(d[10]),I=r(d[11]),S=r(d[12]),v=(function(f){function v(t,p){var u;return o(this,v),(u=s(this,l(v).call(this,t,p)))._selectRowAboveIndexPath=function(t){var n=t.sectionIndex;if(n>=u.props.sections.length)return t;u.props.sections[n].data.length;var o=t.rowIndex,s=o-1;s<0&&(n>0?(n-=1,s=Math.max(0,u.props.sections[n].data.length-1)):s=o);var l={sectionIndex:n,rowIndex:s};return u.setState(function(t){return{selectedRowIndexPath:l}}),l},u._selectRowBelowIndexPath=function(t){var n=t.sectionIndex;if(n>=u.props.sections.length)return t;var o=u.props.sections[n].data.length,s=t.rowIndex,l=s+1;l>o-1&&(n<u.props.sections.length-1?(n+=1,l=0):l=s);var c={sectionIndex:n,rowIndex:l};return u.setState(function(t){return{selectedRowIndexPath:c}}),c},u._ensureItemAtIndexPathIsVisible=function(t){for(var n=t.rowIndex+1,o=0;o<t.sectionIndex;o++)n+=u.props.sections[o].data.length+2;u._listRef.ensureItemAtIndexIsVisible(n)},u._handleKeyDown=function(t){},u._keyExtractor=function(t,n){var o=u._subExtractor(n);return o&&o.key||String(n)},u._convertViewable=function(t){S(null!=t.index,'Received a broken ViewToken');var o=u._subExtractor(t.index);if(!o)return null;var s=o.section.keyExtractor||u.props.keyExtractor;return n({},t,{index:o.index,key:s(t.item,o.index),section:o.section})},u._onViewableItemsChanged=function(t){var n=t.viewableItems,o=t.changed;u.props.onViewableItemsChanged&&u.props.onViewableItemsChanged({viewableItems:n.map(u._convertViewable,c(u)).filter(Boolean),changed:o.map(u._convertViewable,c(u)).filter(Boolean)})},u._isItemSelected=function(t){var n=!1;if(u.state.selectedRowIndexPath){var o=u.state.selectedRowIndexPath,s=u.props.sections;if(s&&o.sectionIndex<s.length){var l=s[o.sectionIndex];if(o.rowIndex<l.data.length)n=t==l.data[o.rowIndex]}}return n},u._renderItem=function(t){var n=t.item,o=t.index,s=u._subExtractor(o);if(!s)return null;var l=s.index;if(null==l){var c=s.section;if(!0===s.header){var p=u.props.renderSectionHeader;return p?p({section:c}):null}var f=u.props.renderSectionFooter;return f?f({section:c}):null}var I=s.section.renderItem||u.props.renderItem,v=u._getSeparatorComponent(o,s);return S(I,'no renderItem!'),h.createElement(x,{SeparatorComponent:v,LeadingSeparatorComponent:0===l?u.props.SectionSeparatorComponent:void 0,cellKey:s.key,index:l,isSelected:u._isItemSelected(n),item:n,leadingItem:s.leadingItem,leadingSection:s.leadingSection,onUpdateSeparator:u._onUpdateSeparator,prevCellKey:(u._subExtractor(o-1)||{}).key,ref:function(t){u._cellRefs[s.key]=t},renderItem:I,section:s.section,trailingItem:s.trailingItem,trailingSection:s.trailingSection})},u._onUpdateSeparator=function(t,n){var o=u._cellRefs[t];o&&o.updateSeparatorProps(n)},u._cellRefs={},u._captureRef=function(t){u._listRef=t},u.state=u._computeState(t),u}return u(v,f),p(v,[{key:"scrollToLocation",value:function(t){for(var o=t.itemIndex+1,s=0;s<t.sectionIndex;s++)o+=this.props.sections[s].data.length+2;var l=n({},t,{index:o});this._listRef.scrollToIndex(l)}},{key:"getListRef",value:function(){return this._listRef}}]),p(v,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.setState(this._computeState(t))}},{key:"_computeState",value:function(t){var o=t.ListHeaderComponent?1:0,s=[],l=t.sections.reduce(function(t,n){return s.push(t+o),t+n.data.length+2},0);return{childProps:n({},t,{renderItem:this._renderItem,ItemSeparatorComponent:void 0,data:t.sections,getItemCount:function(){return l},getItem:_,keyExtractor:this._keyExtractor,onViewableItemsChanged:t.onViewableItemsChanged?this._onViewableItemsChanged:void 0,stickyHeaderIndices:t.stickySectionHeadersEnabled?s:void 0}),selectedRowIndexPath:{sectionIndex:0,rowIndex:-1}}}},{key:"render",value:function(){var n=this.props.onKeyDown;return n||(n=this.props.enableSelectionOnKeyPress?this._handleKeyDown:null),h.createElement(I,t({},this.state.childProps,{ref:this._captureRef,onKeyDown:n},this.state.selectedRowIndexPath))}},{key:"_subExtractor",value:function(t){for(var n=t,o=this.props.keyExtractor,s=0;s<this.props.sections.length;s++){var l=this.props.sections[s],c=l.key||String(s);if((n-=1)>=l.data.length+1)n-=l.data.length+1;else return-1===n?{section:l,key:c+':header',index:null,header:!0,trailingSection:this.props.sections[s+1]}:n===l.data.length?{section:l,key:c+':footer',index:null,header:!1,trailingSection:this.props.sections[s+1]}:{section:l,key:c+':'+(l.keyExtractor||o)(l.data[n],n),index:n,leadingItem:l.data[n-1],leadingSection:this.props.sections[s-1],trailingItem:l.data[n+1],trailingSection:this.props.sections[s+1]}}}},{key:"_getSeparatorComponent",value:function(t,n){if(!(n=n||this._subExtractor(t)))return null;var o=n.section.ItemSeparatorComponent||this.props.ItemSeparatorComponent,s=this.props.SectionSeparatorComponent,l=t===this.state.childProps.getItemCount()-1,c=n.index===n.section.data.length-1;return s&&c?s:!o||c||l?null:o}}]),v})(h.PureComponent);v.defaultProps=n({},I.defaultProps,{data:[]});var x=(function(t){function c(){var t,p;o(this,c);for(var u=arguments.length,h=new Array(u),f=0;f<u;f++)h[f]=arguments[f];return(p=s(this,(t=l(c)).call.apply(t,[this].concat(h)))).state={separatorProps:{highlighted:!1,leadingItem:p.props.item,leadingSection:p.props.leadingSection,section:p.props.section,trailingItem:p.props.trailingItem,trailingSection:p.props.trailingSection},leadingSeparatorProps:{highlighted:!1,leadingItem:p.props.leadingItem,leadingSection:p.props.leadingSection,section:p.props.section,trailingItem:p.props.item,trailingSection:p.props.trailingSection}},p._separators={highlight:function(){['leading','trailing'].forEach(function(t){return p._separators.updateProps(t,{highlighted:!0})})},unhighlight:function(){['leading','trailing'].forEach(function(t){return p._separators.updateProps(t,{highlighted:!1})})},updateProps:function(t,o){var s=p.props,l=s.LeadingSeparatorComponent,c=s.cellKey,u=s.prevCellKey;'leading'===t&&null!=l?p.setState(function(t){return{leadingSeparatorProps:n({},t.leadingSeparatorProps,o)}}):p.props.onUpdateSeparator('leading'===t&&u||c,o)}},p}return u(c,t),p(c,[{key:"updateSeparatorProps",value:function(t){this.setState(function(o){return{separatorProps:n({},o.separatorProps,t)}})}},{key:"render",value:function(){var t=this.props,n=t.LeadingSeparatorComponent,o=t.SeparatorComponent,s=t.item,l=t.index,c=t.isSelected,p=t.section,u=this.props.renderItem({item:s,index:l,isSelected:c,section:p,separators:this._separators}),I=n&&h.createElement(n,this.state.leadingSeparatorProps),S=o&&h.createElement(o,this.state.separatorProps);return I||S?h.createElement(f,null,I,u,S):u}}],[{key:"getDerivedStateFromProps",value:function(t,o){return{separatorProps:n({},o.separatorProps,{leadingItem:t.item,leadingSection:t.leadingSection,section:t.section,trailingItem:t.trailingItem,trailingSection:t.trailingSection}),leadingSeparatorProps:n({},o.leadingSeparatorProps,{leadingItem:t.leadingItem,leadingSection:t.leadingSection,section:t.section,trailingItem:t.item,trailingSection:t.trailingSection})}}}]),c})(h.Component);function _(t,n){if(!t)return null;for(var o=n-1,s=0;s<t.length;s++){if(-1===o||o===t[s].data.length)return t[s];if(o<t[s].data.length)return t[s].data[o];o-=t[s].data.length+2}return null}m.exports=v},279,[41,10,1,3,6,5,2,7,74,139,159,258,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},280,[173,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]);m.exports=s(t)},281,[159,255]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),l=r(d[5]),f=r(d[6]),p=r(d[7]),c=r(d[8]),h=r(d[9]),v=r(d[10]),R=r(d[11]),C=r(d[12]),_=v('AndroidCheckBox'),w=(function(h){function v(){var n,t;s(this,v);for(var o=arguments.length,u=new Array(o),p=0;p<o;p++)u[p]=arguments[p];return(t=l(this,(n=f(v)).call.apply(n,[this].concat(u))))._nativeRef=null,t._setNativeRef=C({getForwardedRef:function(){return t.props.forwardedRef},setLocalRef:function(n){t._nativeRef=n}}),t._onChange=function(n){var o,s=null!=(o=t.props.value)&&o;R(t._nativeRef).setNativeProps({value:s}),t.props.onChange&&t.props.onChange(n),t.props.onValueChange&&t.props.onValueChange(n.nativeEvent.value)},t}return p(v,h),u(v,[{key:"render",value:function(){var s,u,l=this.props,f=(l.disabled,l.value,l.style),p=(l.forwardedRef,o(l,["disabled","value","style","forwardedRef"])),h=null!=(s=this.props.disabled)&&s,v=null!=(u=this.props.value)&&u,R=t({},p,{onStartShouldSetResponder:function(){return!0},onResponderTerminationRequest:function(){return!1},enabled:!h,on:v,style:[y.rctCheckBox,f]});return c.createElement(_,n({},R,{ref:this._setNativeRef,onChange:this._onChange}))}}]),v})(c.Component),y=h.create({rctCheckBox:{height:32,width:32}}),b=c.forwardRef(function(t,o){return c.createElement(w,n({},t,{forwardedRef:o}))});m.exports=b},282,[41,10,39,1,2,3,6,7,139,140,162,189,283]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=function(t){var n=t.getForwardedRef,o=t.setLocalRef;return function(t){var c=n();o(t),'function'==typeof c?c(t):'object'==typeof c&&null!=c&&(c.current=t)}}},283,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]),s=r(d[4]),u=r(d[5]),l=r(d[6]),h=r(d[7]),p=r(d[8]),f=(function(l){function f(){return t(this,f),o(this,c(f).apply(this,arguments))}return s(f,l),n(f,[{key:"render",value:function(){return u.createElement(p,{style:[y.dummyDatePickerIOS,this.props.style]},u.createElement(h,{style:y.datePickerText},"DatePickerIOS is not supported on this platform!"))}}]),f})(u.Component),y=l.create({dummyDatePickerIOS:{height:100,width:300,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center',margin:10},datePickerText:{color:'#333333',margin:20}});m.exports=f},284,[1,2,3,6,7,139,140,173,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),s=r(d[3]),c=r(d[4]),o=r(d[5]),f=r(d[6]),u=r(d[7]),h=r(d[8]),v=r(d[9]),y=r(d[10]),p=r(d[11]),R=(function(R){function _(){var t,n;l(this,_);for(var s=arguments.length,f=new Array(s),u=0;u<s;u++)f[u]=arguments[u];return(n=c(this,(t=o(_)).call.apply(t,[this].concat(f))))._viewRef=null,n._captureRef=function(t){n._viewRef=t},n}return f(_,R),s(_,[{key:"setNativeProps",value:function(t){var n=this._viewRef;n&&(p(n),n.setNativeProps(t))}},{key:"render",value:function(){var l=this.props,s=l.children,c=l.style,o=l.imageStyle,f=l.imageRef,p=n(l,["children","style","imageStyle","imageRef"]);return h.createElement(y,{accessibilityIgnoresInvertColors:!0,style:c,ref:this._captureRef},h.createElement(u,t({},p,{style:[v.absoluteFill,{width:c.width,height:c.height},o],ref:f})),s)}}]),_})(h.Component);m.exports=R},285,[41,39,1,2,3,6,7,273,139,140,159,286]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=function(o){t(o&&'function'==typeof o.setNativeProps,"Touchable child must either be native or forward setNativeProps to a native component")}},286,[20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),u=r(d[2]).ImageEditingManager,c=(function(){function c(){n(this,c)}return t(c,null,[{key:"cropImage",value:function(n,t,c,o){u.cropImage(n,t,c,o)}}]),c})();m.exports=c},287,[1,2,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]),t=r(d[2]).ImageStoreManager,s=(function(){function s(){o(this,s)}return n(s,null,[{key:"hasImageForTag",value:function(o,n){t.hasImageForTag?t.hasImageForTag(o,n):console.warn('hasImageForTag() not implemented')}},{key:"removeImageForTag",value:function(o){t.removeImageForTag?t.removeImageForTag(o):console.warn('removeImageForTag() not implemented')}},{key:"addImageFromBase64",value:function(o,n,s){t.addImageFromBase64(o,n,s)}},{key:"getBase64ForTag",value:function(o,n,s){t.getBase64ForTag(o,n,s)}}]),s})();m.exports=s},288,[1,2,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),s=r(d[3]),c=r(d[4]),p=(r(d[5]),r(d[6]),r(d[7])),u=r(d[8]),l=r(d[9])('RCTInputAccessoryView'),h=(function(u){function h(){return n(this,h),o(this,s(h).apply(this,arguments))}return c(h,u),t(h,[{key:"render",value:function(){return console.warn('<InputAccessoryView> is only supported on iOS.'),0===p.Children.count(this.props.children)?null:p.createElement(l,{style:[this.props.style,y.container],nativeID:this.props.nativeID,backgroundColor:this.props.backgroundColor},this.props.children)}}]),h})(p.Component),y=u.create({container:{position:'absolute'}});m.exports=h},289,[1,2,3,6,7,146,74,139,140,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=r(d[2]),s=r(d[3]),u=r(d[4]),l=r(d[5]),h=r(d[6]),c=r(d[7]),y=r(d[8]),f=(r(d[9]),r(d[10])),b=r(d[11]),p=r(d[12]),v=(function(v){function _(){var t,o;n(this,_);for(var s=arguments.length,h=new Array(s),c=0;c<s;c++)h[c]=arguments[c];return(o=u(this,(t=l(_)).call.apply(t,[this].concat(h))))._frame=null,o._subscriptions=[],o.state={bottom:0},o._onKeyboardChange=function(t){if(null!=t){var n=t.duration,s=t.easing,u=t.endCoordinates,l=o._relativeKeyboardHeight(u);o.state.bottom!==l&&(n&&s&&y.configureNext({duration:n,update:{duration:n,type:y.Types[s]||'keyboard'}}),o.setState({bottom:l}))}else o.setState({bottom:0})},o._onLayout=function(t){o._frame=t.nativeEvent.layout},o}return h(_,v),s(_,[{key:"_relativeKeyboardHeight",value:function(t){var o=this._frame;if(!o||!t)return 0;var n=t.screenY-this.props.keyboardVerticalOffset;return Math.max(o.y+o.height-n,0)}},{key:"UNSAFE_componentWillUpdate",value:function(t,o){o.bottom===this.state.bottom&&'height'===this.props.behavior&&'height'===t.behavior&&(o.bottom=0)}},{key:"componentDidMount",value:function(){this._subscriptions=[c.addListener('keyboardDidHide',this._onKeyboardChange),c.addListener('keyboardDidShow',this._onKeyboardChange)]}},{key:"componentWillUnmount",value:function(){this._subscriptions.forEach(function(t){t.remove()})}},{key:"render",value:function(){var n=this.props,s=n.behavior,u=n.children,l=n.contentContainerStyle,h=n.enabled,c=(n.keyboardVerticalOffset,n.style),y=o(n,["behavior","children","contentContainerStyle","enabled","keyboardVerticalOffset","style"]),v=h?this.state.bottom:0;switch(s){case'height':var _;return null!=this._frame&&(_={height:this._frame.height-v,flex:0}),f.createElement(p,t({ref:"VIEW",style:b.compose(c,_),onLayout:this._onLayout},y),u);case'position':return f.createElement(p,t({ref:"VIEW",style:c,onLayout:this._onLayout},y),f.createElement(p,{style:b.compose(l,{bottom:v})},u));case'padding':return f.createElement(p,t({ref:"VIEW",style:b.compose(c,{paddingBottom:v}),onLayout:this._onLayout},y),u);default:return f.createElement(p,t({ref:"VIEW",onLayout:this._onLayout,style:c},y),u)}}}]),_})(f.Component);v.defaultProps={enabled:!0,keyboardVerticalOffset:0},m.exports=v},290,[41,39,1,2,3,6,7,265,266,74,139,140,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=(r(d[2]),r(d[3])),s=(r(d[4]),r(d[5])),l=r(d[6]),h=r(d[7]).ScrollViewManager,c=r(d[8]),p=r(d[9]),u=r(d[10]),R=r(d[11]),_=r(d[12]),f=r(d[13]),w=r(d[14]),S=r(d[15]),C=f({displayName:'ListView',_rafIds:[],_childFrames:[],_sentEndForContentLength:null,_scrollComponent:null,_prevRenderedRowsCount:0,_visibleRows:{},scrollProperties:{},mixins:[p.Mixin],statics:{DataSource:n},getMetrics:function(){return{contentLength:this.scrollProperties.contentLength,totalRows:this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount(),renderedRows:this.state.curRenderedRowsCount,visibleRows:Object.keys(this._visibleRows).length}},getScrollResponder:function(){if(this._scrollComponent&&this._scrollComponent.getScrollResponder)return this._scrollComponent.getScrollResponder()},getScrollableNode:function(){return this._scrollComponent&&this._scrollComponent.getScrollableNode?this._scrollComponent.getScrollableNode():l.findNodeHandle(this._scrollComponent)},scrollTo:function(){var t;this._scrollComponent&&this._scrollComponent.scrollTo&&(t=this._scrollComponent).scrollTo.apply(t,arguments)},scrollToEnd:function(t){this._scrollComponent&&(this._scrollComponent.scrollToEnd?this._scrollComponent.scrollToEnd(t):console.warn("The scroll component used by the ListView does not support scrollToEnd. Check the renderScrollComponent prop of your ListView."))},flashScrollIndicators:function(){this._scrollComponent&&this._scrollComponent.flashScrollIndicators&&this._scrollComponent.flashScrollIndicators()},setNativeProps:function(t){this._scrollComponent&&this._scrollComponent.setNativeProps(t)},getDefaultProps:function(){return{initialListSize:10,pageSize:1,renderScrollComponent:function(t){return s.createElement(c,t)},scrollRenderAheadDistance:1e3,onEndReachedThreshold:1e3,stickySectionHeadersEnabled:!1,stickyHeaderIndices:[]}},getInitialState:function(){return{curRenderedRowsCount:this.props.initialListSize,highlightedRow:{}}},getInnerViewNode:function(){return this._scrollComponent&&this._scrollComponent.getInnerViewNode()},UNSAFE_componentWillMount:function(){this.scrollProperties={visibleLength:null,contentLength:null,offset:0},this._rafIds=[],this._childFrames=[],this._visibleRows={},this._prevRenderedRowsCount=0,this._sentEndForContentLength=null},componentWillUnmount:function(){this._rafIds.forEach(cancelAnimationFrame),this._rafIds=[]},componentDidMount:function(){var t=this;this._requestAnimationFrame(function(){t._measureAndUpdateScrollProps()})},UNSAFE_componentWillReceiveProps:function(t){var o=this;this.props.dataSource===t.dataSource&&this.props.initialListSize===t.initialListSize||this.setState(function(t,n){return o._prevRenderedRowsCount=0,{curRenderedRowsCount:Math.min(Math.max(t.curRenderedRowsCount,n.initialListSize),n.enableEmptySections?n.dataSource.getRowAndSectionCount():n.dataSource.getRowCount())}},function(){return o._renderMoreRowsIfNeeded()})},componentDidUpdate:function(){var t=this;this._requestAnimationFrame(function(){t._measureAndUpdateScrollProps()})},_onRowHighlighted:function(t,o){this.setState({highlightedRow:{sectionID:t,rowID:o}})},render:function(){for(var n=[],l=this.props.dataSource,h=l.rowIdentities,c=0,p=[],f=this.props.renderSectionHeader,w=this.props.renderHeader&&this.props.renderHeader(),S=this.props.renderFooter&&this.props.renderFooter(),C=w?1:0,v=0;v<h.length;v++){var b=l.sectionIdentities[v],E=h[v];if(0===E.length){if(void 0===this.props.enableEmptySections){r(d[16])(!1,"In next release empty section headers will be rendered. In this release you can use 'enableEmptySections' flag to render empty section headers.");continue}r(d[17])(this.props.enableEmptySections,"In next release 'enableEmptySections' flag will be deprecated, empty section headers will always be rendered. If empty section headers are not desirable their indices should be excluded from sectionIDs object. In this release 'enableEmptySections' may only have value 'true' to allow empty section headers rendering.")}if(f){var y=f(l.getSectionHeaderData(v),b);y&&(n.push(s.cloneElement(y,{key:'s_'+b})),this.props.stickySectionHeadersEnabled&&p.push(C),C++)}for(var I=0;I<E.length;I++){var L=E[I],P=b+'_'+L,F=c>=this._prevRenderedRowsCount&&l.rowShouldUpdate(v,I),D=s.createElement(u,{key:'r_'+P,shouldUpdate:!!F,render:this.props.renderRow.bind(null,l.getRowData(v,I),b,L,this._onRowHighlighted)});if(n.push(D),C++,this.props.renderSeparator&&(I!==E.length-1||v===h.length-1)){var N=this.state.highlightedRow.sectionID===b&&(this.state.highlightedRow.rowID===L||this.state.highlightedRow.rowID===E[I+1]),A=this.props.renderSeparator(b,L,N);A&&(n.push(s.createElement(R,{key:'s_'+P},A)),C++)}if(++c===this.state.curRenderedRowsCount)break}if(c>=this.state.curRenderedRowsCount)break}var H=this.props,z=H.renderScrollComponent,V=o(H,["renderScrollComponent"]);return V.scrollEventThrottle||(V.scrollEventThrottle=50),void 0===V.removeClippedSubviews&&(V.removeClippedSubviews=!0),t(V,{onScroll:this._onScroll,stickyHeaderIndices:this.props.stickyHeaderIndices.concat(p),onKeyboardWillShow:void 0,onKeyboardWillHide:void 0,onKeyboardDidShow:void 0,onKeyboardDidHide:void 0}),_(z(V),{ref:this._setScrollComponentRef,onContentSizeChange:this._onContentSizeChange,onLayout:this._onLayout,DEPRECATED_sendUpdatedChildFrames:void 0!==typeof V.onChangeVisibleRows},w,n,S)},_requestAnimationFrame:function(t){var o=this,n=requestAnimationFrame(function(){o._rafIds=o._rafIds.filter(function(t){return t!==n}),t()});this._rafIds.push(n)},_measureAndUpdateScrollProps:function(){var t=this.getScrollResponder();t&&t.getInnerViewNode&&h&&h.calculateChildFrames&&h.calculateChildFrames(l.findNodeHandle(t),this._updateVisibleRows)},_setScrollComponentRef:function(t){this._scrollComponent=t},_onContentSizeChange:function(t,o){var n=this.props.horizontal?t:o;n!==this.scrollProperties.contentLength&&(this.scrollProperties.contentLength=n,this._updateVisibleRows(),this._renderMoreRowsIfNeeded()),this.props.onContentSizeChange&&this.props.onContentSizeChange(t,o)},_onLayout:function(t){var o=t.nativeEvent.layout,n=o.width,s=o.height,l=this.props.horizontal?n:s;l!==this.scrollProperties.visibleLength&&(this.scrollProperties.visibleLength=l,this._updateVisibleRows(),this._renderMoreRowsIfNeeded()),this.props.onLayout&&this.props.onLayout(t)},_maybeCallOnEndReached:function(t){return!!(this.props.onEndReached&&this.scrollProperties.contentLength!==this._sentEndForContentLength&&this._getDistanceFromEnd(this.scrollProperties)<this.props.onEndReachedThreshold&&this.state.curRenderedRowsCount===(this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount()))&&(this._sentEndForContentLength=this.scrollProperties.contentLength,this.props.onEndReached(t),!0)},_renderMoreRowsIfNeeded:function(){null!==this.scrollProperties.contentLength&&null!==this.scrollProperties.visibleLength&&this.state.curRenderedRowsCount!==(this.props.enableEmptySections?this.props.dataSource.getRowAndSectionCount():this.props.dataSource.getRowCount())?this._getDistanceFromEnd(this.scrollProperties)<this.props.scrollRenderAheadDistance&&this._pageInNewRows():this._maybeCallOnEndReached()},_pageInNewRows:function(){var t=this;this.setState(function(o,n){var s=Math.min(o.curRenderedRowsCount+n.pageSize,n.enableEmptySections?n.dataSource.getRowAndSectionCount():n.dataSource.getRowCount());return t._prevRenderedRowsCount=o.curRenderedRowsCount,{curRenderedRowsCount:s}},function(){t._measureAndUpdateScrollProps(),t._prevRenderedRowsCount=t.state.curRenderedRowsCount})},_getDistanceFromEnd:function(t){return t.contentLength-t.visibleLength-t.offset},_updateVisibleRows:function(t){var o=this;if(this.props.onChangeVisibleRows){t&&t.forEach(function(t){o._childFrames[t.index]=S(t)});for(var n=!this.props.horizontal,s=this.props.dataSource,l=this.scrollProperties.offset,h=l+this.scrollProperties.visibleLength,c=s.rowIdentities,p=this.props.renderHeader&&this.props.renderHeader()?1:0,u=!1,R={},_=0;_<c.length;_++){var f=c[_];if(0!==f.length){var C=s.sectionIdentities[_];this.props.renderSectionHeader&&p++;var v=this._visibleRows[C];v||(v={});for(var b=0;b<f.length;b++){var E=f[b],y=this._childFrames[p];if(p++,!this.props.renderSeparator||b===f.length-1&&_!==c.length-1||p++,!y)break;var I=v[E],L=n?y.y:y.x,P=L+(n?y.height:y.width);if(!L&&!P||L===P)break;L>h||P<l?I&&(u=!0,delete v[E],R[C]||(R[C]={}),R[C][E]=!1):I||(u=!0,v[E]=!0,R[C]||(R[C]={}),R[C][E]=!0)}w(v)?this._visibleRows[C]&&delete this._visibleRows[C]:this._visibleRows[C]=v}}u&&this.props.onChangeVisibleRows(this._visibleRows,R)}},_onScroll:function(t){var o=!this.props.horizontal;this.scrollProperties.visibleLength=t.nativeEvent.layoutMeasurement[o?'height':'width'],this.scrollProperties.contentLength=t.nativeEvent.contentSize[o?'height':'width'],this.scrollProperties.offset=t.nativeEvent.contentOffset[o?'y':'x'],this._updateVisibleRows(t.nativeEvent.updatedChildFrames),this._maybeCallOnEndReached(t)||this._renderMoreRowsIfNeeded(),this.props.onEndReached&&this._getDistanceFromEnd(this.scrollProperties)>this.props.onEndReachedThreshold&&(this._sentEndForContentLength=null),this.props.onScroll&&this.props.onScroll(t)}});m.exports=C},291,[41,39,292,293,74,139,43,38,262,263,295,159,296,219,294,178,78,20]);
+__d(function(g,r,i,a,m,e,d){var n=r(d[0]),t=r(d[1]),o=r(d[2]),u=r(d[3]),l=r(d[4]),c=r(d[5]),s=r(d[6]),f=(function(c){"use strict";function s(){return n(this,s),o(this,u(s).apply(this,arguments))}return l(s,c),t(s,[{key:"setNativeProps",value:function(n){}},{key:"flashScrollIndicators",value:function(){}},{key:"getScrollResponder",value:function(){}},{key:"getScrollableNode",value:function(){}},{key:"getMetrics",value:function(){}},{key:"scrollTo",value:function(){}},{key:"scrollToEnd",value:function(n){}}]),s})(c.Component);f.DataSource=s,m.exports=f},292,[1,2,3,6,7,139,293]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),h=r(d[4]),c=r(d[5]);function u(t,n,s){return t[n][s]}function l(t,n){return t[n]}var w=(function(){function h(t){n(this,h),o(t&&'function'==typeof t.rowHasChanged,'Must provide a rowHasChanged function.'),this._rowHasChanged=t.rowHasChanged,this._getRowData=t.getRowData||u,this._sectionHeaderHasChanged=t.sectionHeaderHasChanged,this._getSectionHeaderData=t.getSectionHeaderData||l,this._dataBlob=null,this._dirtyRows=[],this._dirtySections=[],this._cachedRowCount=0,this.rowIdentities=[],this.sectionIdentities=[]}return s(h,[{key:"cloneWithRows",value:function(n,s){var o=s?[t(s)]:null;return this._sectionHeaderHasChanged||(this._sectionHeaderHasChanged=function(){return!1}),this.cloneWithRowsAndSections({s1:n},['s1'],o)}},{key:"cloneWithRowsAndSections",value:function(t,n,s){o('function'==typeof this._sectionHeaderHasChanged,'Must provide a sectionHeaderHasChanged function with section data.'),o(!n||!s||n.length===s.length,'row and section ids lengths must be the same');var c=new h({getRowData:this._getRowData,getSectionHeaderData:this._getSectionHeaderData,rowHasChanged:this._rowHasChanged,sectionHeaderHasChanged:this._sectionHeaderHasChanged});return c._dataBlob=t,c.sectionIdentities=n||Object.keys(t),s?c.rowIdentities=s:(c.rowIdentities=[],c.sectionIdentities.forEach(function(n){c.rowIdentities.push(Object.keys(t[n]))})),c._cachedRowCount=_(c.rowIdentities),c._calculateDirtyArrays(this._dataBlob,this.sectionIdentities,this.rowIdentities),c}},{key:"getRowCount",value:function(){return this._cachedRowCount}},{key:"getRowAndSectionCount",value:function(){return this._cachedRowCount+this.sectionIdentities.length}},{key:"rowShouldUpdate",value:function(t,n){var s=this._dirtyRows[t][n];return c(void 0!==s,'missing dirtyBit for section, row: '+t+', '+n),s}},{key:"getRowData",value:function(t,n){var s=this.sectionIdentities[t],o=this.rowIdentities[t][n];return c(void 0!==s&&void 0!==o,'rendering invalid section, row: '+t+', '+n),this._getRowData(this._dataBlob,s,o)}},{key:"getRowIDForFlatIndex",value:function(t){for(var n=t,s=0;s<this.sectionIdentities.length;s++){if(!(n>=this.rowIdentities[s].length))return this.rowIdentities[s][n];n-=this.rowIdentities[s].length}return null}},{key:"getSectionIDForFlatIndex",value:function(t){for(var n=t,s=0;s<this.sectionIdentities.length;s++){if(!(n>=this.rowIdentities[s].length))return this.sectionIdentities[s];n-=this.rowIdentities[s].length}return null}},{key:"getSectionLengths",value:function(){for(var t=[],n=0;n<this.sectionIdentities.length;n++)t.push(this.rowIdentities[n].length);return t}},{key:"sectionHeaderShouldUpdate",value:function(t){var n=this._dirtySections[t];return c(void 0!==n,'missing dirtyBit for section: '+t),n}},{key:"getSectionHeaderData",value:function(t){if(!this._getSectionHeaderData)return null;var n=this.sectionIdentities[t];return c(void 0!==n,'renderSection called on invalid section: '+t),this._getSectionHeaderData(this._dataBlob,n)}},{key:"_calculateDirtyArrays",value:function(t,n,s){for(var o,h=f(n),u={},l=0;l<s.length;l++){var w=n[l];c(!u[w],'SectionID appears more than once: '+w),u[w]=f(s[l])}this._dirtySections=[],this._dirtyRows=[];for(var _=0;_<this.sectionIdentities.length;_++){var v=this.sectionIdentities[_];o=!h[v];var H=this._sectionHeaderHasChanged;!o&&H&&(o=H(this._getSectionHeaderData(t,v),this._getSectionHeaderData(this._dataBlob,v))),this._dirtySections.push(!!o),this._dirtyRows[_]=[];for(var I=0;I<this.rowIdentities[_].length;I++){var y=this.rowIdentities[_][I];o=!h[v]||!u[v][y]||this._rowHasChanged(this._getRowData(t,v,y),this._getRowData(this._dataBlob,v,y)),this._dirtyRows[_].push(!!o)}}}}]),h})();function _(t){for(var n=0,s=0;s<t.length;s++){n+=t[s].length}return n}function f(t){if(h(t))return{};for(var n={},s=0;s<t.length;s++){var o=t[s];c(!n[o],'Value appears more than once in array: '+o),n[o]=!0}return n}m.exports=w},293,[14,1,2,20,294,78]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=function(t){if(Array.isArray(t))return 0===t.length;if('object'==typeof t){for(var n in t)return!1;return!0}return!t}},294,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),u=r(d[2]),o=r(d[3]),s=r(d[4]),p=(function(p){function c(){return n(this,c),u(this,o(c).apply(this,arguments))}return s(c,p),t(c,[{key:"shouldComponentUpdate",value:function(n){return n.shouldUpdate}},{key:"render",value:function(){return this.props.render()}}]),c})(r(d[5]).Component);m.exports=p},295,[1,2,3,6,7,139]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]);m.exports=function(c,l){for(var o=l.ref,f=c.ref,p=arguments.length,u=new Array(p>2?p-2:0),y=2;y<p;y++)u[y-2]=arguments[y];return null==f||null==o?t.cloneElement.apply(t,[c,l].concat(u)):'function'!=typeof f?t.cloneElement.apply(t,[c,l].concat(u)):t.cloneElement.apply(t,[c,n({},l,{ref:function(n){o(n),f(n)}})].concat(u))}},296,[10,125]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},297,[298]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),u=r(d[3]),o=r(d[4]),p=r(d[5]),c=r(d[6]),l=(function(c){function l(){return t(this,l),s(this,u(l).apply(this,arguments))}return o(l,c),n(l,[{key:"setNativeProps",value:function(){}},{key:"render",value:function(){var t=r(d[7]);return p.createElement(t,{style:[h.unimplementedView,this.props.style]},this.props.children)}}]),l})(p.Component),h=c.create({unimplementedView:{}});m.exports=l},298,[1,2,3,6,7,139,140,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]),o=r(d[1]),s=r(d[2]),p=r(d[3]),l=r(d[4]),u=r(d[5]),c=(r(d[6]),r(d[7])),h=(r(d[8]),r(d[9]),r(d[10]),r(d[11])),v=r(d[12]),f=r(d[13]),y=r(d[14]),S=r(d[15])('RCTModalHostView'),_=0,C=(function(t){function n(t){var s;return o(this,n),s=p(this,l(n).call(this,t)),n._confirmProps(t),s._identifier=_++,s}return u(n,t),s(n,[{key:"getChildContext",value:function(){return{virtualizedList:null}}},{key:"componentDidMount",value:function(){}},{key:"componentWillUnmount",value:function(){this._eventSubscription&&this._eventSubscription.remove()}},{key:"UNSAFE_componentWillReceiveProps",value:function(t){n._confirmProps(t)}},{key:"render",value:function(){if(!0!==this.props.visible)return null;var t={backgroundColor:this.props.transparent?'transparent':'white'},n=this.props.animationType;n||(n='none',this.props.animated&&(n='slide'));var o=this.props.presentationStyle;o||(o='fullScreen',this.props.transparent&&(o='overFullScreen'));var s=this.props.children;return h.createElement(S,{animationType:n,presentationStyle:o,transparent:this.props.transparent,hardwareAccelerated:this.props.hardwareAccelerated,onRequestClose:this.props.onRequestClose,onShow:this.props.onShow,identifier:this._identifier,style:w.modal,onStartShouldSetResponder:this._shouldSetResponder,supportedOrientations:this.props.supportedOrientations,onOrientationChange:this.props.onOrientationChange},h.createElement(y,{style:[w.container,t]},s))}},{key:"_shouldSetResponder",value:function(){return!0}}],[{key:"_confirmProps",value:function(t){t.presentationStyle&&'overFullScreen'!==t.presentationStyle&&t.transparent&&console.warn("Modal with '"+t.presentationStyle+"' presentation style and 'transparent' value is not supported.")}}]),n})(h.Component);C.defaultProps={visible:!0,hardwareAccelerated:!1},C.contextTypes={rootTag:v.number},C.childContextTypes={virtualizedList:v.object};var b=c.isRTL?'right':'left',w=f.create({modal:{position:'absolute'},container:(t={position:'absolute'},n(t,b,0),n(t,"top",0),t)});m.exports=C},299,[11,1,2,3,6,7,135,300,87,38,74,139,136,140,159,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]).I18nManager||{isRTL:!1,doLeftAndRightSwapInRTL:!0,allowRTL:function(){},forceRTL:function(){},swapLeftAndRightInRTL:function(){}};m.exports=n},300,[38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),u=r(d[3]),s=r(d[4]),p=r(d[5]),l=(r(d[6]),r(d[7]),r(d[8])),c=(r(d[9]),(function(p){function l(){return t(this,l),o(this,u(l).apply(this,arguments))}return s(l,p),n(l,[{key:"render",value:function(){throw null}}]),l})(l.Component)),h=(function(c){function h(){return t(this,h),o(this,u(h).apply(this,arguments))}return s(h,c),n(h,[{key:"render",value:function(){return l.createElement(p,this.props,this.props.children)}}]),h})(l.Component);h.MODE_DIALOG="dialog",h.MODE_DROPDOWN='dropdown',h.Item=c,h.defaultProps={mode:"dialog"},m.exports=h},301,[1,2,3,6,7,302,303,74,139,298]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),o=r(d[2]),n=r(d[3]),p=r(d[4]),l=r(d[5]),c=r(d[6]),h=r(d[7]),u=r(d[8]),v=r(d[9]),f=r(d[10]),_=f('AndroidDropdownPicker'),k=f('AndroidDialogPicker'),P=(function(u){function f(t,n){var c;o(this,f),(c=p(this,l(f).call(this,t,n)))._stateFromProps=function(t){var s=0,o=h.Children.map(t.children,function(o,n){o.props.value===t.selectedValue&&(s=n);var p={value:o.props.value,label:o.props.label};return o.props.color&&(p.color=v(o.props.color)),p});return{selectedIndex:s,items:o}},c._onChange=function(t){if(c.props.onValueChange){var s=t.nativeEvent.position;if(s>=0){var o=h.Children.toArray(c.props.children)[s].props.value;c.props.onValueChange(o,s)}else c.props.onValueChange(null,s)}c._lastNativePosition=t.nativeEvent.position,c.forceUpdate()};var u=c._stateFromProps(t);return c.state=s({},u,{initialSelectedIndex:u.selectedIndex}),c}return c(f,u),n(f,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.setState(this._stateFromProps(t))}},{key:"render",value:function(){var s="dropdown"===this.props.mode?_:k,o={enabled:this.props.enabled,items:this.state.items,mode:this.props.mode,onSelect:this._onChange,prompt:this.props.prompt,selected:this.state.initialSelectedIndex,testID:this.props.testID,style:[I.pickerAndroid,this.props.style],accessibilityLabel:this.props.accessibilityLabel};return h.createElement(s,t({ref:"picker"},o))}},{key:"componentDidMount",value:function(){this._lastNativePosition=this.state.initialSelectedIndex}},{key:"componentDidUpdate",value:function(){this.refs.picker&&this.state.selectedIndex!==this._lastNativePosition&&(this.refs.picker.setNativeProps({selected:this.state.selectedIndex}),this._lastNativePosition=this.state.selectedIndex)}}]),f})(h.Component),I=u.create({pickerAndroid:{height:50}});m.exports=P},302,[41,10,1,2,3,6,7,139,140,154,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},303,[298]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),c=r(d[4]),u=r(d[5]),l=r(d[6]),f=r(d[7]),h=r(d[8]),p=(function(l){function p(){return t(this,p),o(this,s(p).apply(this,arguments))}return c(p,l),n(p,[{key:"render",value:function(){return u.createElement(h,{style:[y.dummy,this.props.style]},u.createElement(f,{style:y.text},"ProgressViewIOS is not supported on this platform!"))}}]),p})(u.Component),y=l.create({dummy:{width:120,height:20,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center'},text:{color:'#333333',margin:5,fontSize:10}});m.exports=p},304,[1,2,3,6,7,139,140,173,159]);
+__d(function(g,r,i,a,m,e,d){r(d[0]);var t,n=r(d[1]),u=r(d[2]),s=r(d[3]),o=r(d[4]),p=r(d[5]),l=r(d[6]),c=(r(d[7]),r(d[8])),f=r(d[9]);r(d[10]);t=(function(t){"use strict";function h(){return u(this,h),o(this,p(h).apply(this,arguments))}return l(h,t),s(h,[{key:"render",value:function(){var t=this.props,u=(t.emulateUnlessSupported,n(t,["emulateUnlessSupported"]));return c.createElement(f,u)}}]),h})(c.Component),m.exports=t},305,[41,39,1,2,3,6,7,74,139,159,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),c=r(d[4]),u=r(d[5]),l=r(d[6]),f=r(d[7]),h=r(d[8]),p=(function(l){function p(){return t(this,p),o(this,s(p).apply(this,arguments))}return c(p,l),n(p,[{key:"render",value:function(){return u.createElement(h,{style:[y.dummy,this.props.style]},u.createElement(f,{style:y.text},"SegmentedControlIOS is not supported on this platform!"))}}]),p})(u.Component),y=l.create({dummy:{width:120,height:50,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center'},text:{color:'#333333',margin:5,fontSize:10}});m.exports=p},306,[1,2,3,6,7,139,140,173,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n,t=r(d[0]),o=(r(d[1]),r(d[2]),r(d[3])),l=r(d[4]),u=r(d[5])('RCTSlider'),s=o.forwardRef(function(s,v){var f=l.compose(n.slider,s.style),c=s.onValueChange&&function(n){var t;t=null!=n.nativeEvent.fromUser&&n.nativeEvent.fromUser,s.onValueChange&&t&&s.onValueChange(n.nativeEvent.value)},p=c,C=s.onSlidingComplete&&function(n){s.onSlidingComplete&&s.onSlidingComplete(n.nativeEvent.value)};return o.createElement(u,t({},s,{ref:v,style:f,onChange:p,onSlidingComplete:C,onValueChange:c,enabled:!s.disabled,onStartShouldSetResponder:function(){return!0},onResponderTerminationRequest:function(){return!1}}))});s.defaultProps={disabled:!1,value:0,minimumValue:0,maximumValue:1,step:0},n=l.create({slider:{}}),m.exports=s},307,[41,43,74,139,140,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=r(d[0])},308,[298]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),o=r(d[1]),t=r(d[2]),l=r(d[3]),u=r(d[4]),h=r(d[5]),s=r(d[6]),C=r(d[7]),c=(r(d[8]),r(d[9])),p=(r(d[10]),(function(p){function _(){var n,o;t(this,_);for(var l=arguments.length,s=new Array(l),C=0;C<l;C++)s[C]=arguments[C];return(o=u(this,(n=h(_)).call.apply(n,[this].concat(s))))._handleChange=function(n){if(null!=o._nativeSwitchRef){var t=!0===o.props.value;o._nativeSwitchRef.setNativeProps({on:t}),null!=o.props.onChange&&o.props.onChange(n),null!=o.props.onValueChange&&o.props.onValueChange(n.nativeEvent.value)}},o._handleSwitchNativeComponentRef=function(n){o._nativeSwitchRef=n},o}return s(_,p),l(_,[{key:"render",value:function(){var t=this.props,l=t.disabled,u=(t.ios_backgroundColor,t.onChange,t.onValueChange,t.style),h=t.thumbColor,s=t.trackColor,p=t.value,_=o(t,["disabled","ios_backgroundColor","onChange","onValueChange","style","thumbColor","trackColor","value"]),b=h,R=null==s?void 0:s.false,S=null==s?void 0:s.true,k=_,w=k.thumbTintColor,y=k.tintColor,T=k.onTintColor;null!=w&&(b=w),null!=y&&(R=y),null!=T&&(S=T);var V={enabled:!0!==l,on:!0===p,style:u,thumbTintColor:b,trackTintColor:!0===p?S:R};return c.createElement(C,n({},_,V,{onChange:this._handleChange,onResponderTerminationRequest:v,onStartShouldSetResponder:f,ref:this._handleSwitchNativeComponentRef}))}}]),_})(c.Component)),v=function(){return!1},f=function(){return!0};m.exports=p},309,[41,39,1,2,3,6,7,310,74,139,140]);
+__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]),r(d[1]);var t=r(d[2])('AndroidSwitch');m.exports=t},310,[74,43,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),p=r(d[7]),f=r(d[8]),w=r(d[9]),_=(function(t){function _(t,n){var s;return o(this,_),(s=l(this,u(_).call(this,t,n)))._flatListRef=null,s._shouldBounceFirstRowOnMount=!1,s._onScroll=function(t){s.state.openRowKey&&s.setState({openRowKey:null}),s.props.onScroll&&s.props.onScroll(t)},s._renderItem=function(t){var n=s.props.renderQuickActions(t),o=s.props.keyExtractor(t.item,t.index);if(!n)return s.props.renderItem(t);var l=!1;return s._shouldBounceFirstRowOnMount&&(s._shouldBounceFirstRowOnMount=!1,l=!0),p.createElement(f,{slideoutView:n,isOpen:o===s.state.openRowKey,maxSwipeDistance:s._getMaxSwipeDistance(t),onOpen:function(){return s._onOpen(o)},onClose:function(){return s._onClose(o)},shouldBounceOnMount:l,onSwipeEnd:s._setListViewScrollable,onSwipeStart:s._setListViewNotScrollable},s.props.renderItem(t))},s._setListViewScrollable=function(){s._setListViewScrollableTo(!0)},s._setListViewNotScrollable=function(){s._setListViewScrollableTo(!1)},s.state={openRowKey:null},s._shouldBounceFirstRowOnMount=s.props.bounceFirstRowOnMount,s}return c(_,t),s(_,[{key:"render",value:function(){var t=this;return p.createElement(w,n({},this.props,{ref:function(n){t._flatListRef=n},onScroll:this._onScroll,renderItem:this._renderItem,extraData:this.state}))}},{key:"_getMaxSwipeDistance",value:function(t){return'function'==typeof this.props.maxSwipeDistance?this.props.maxSwipeDistance(t):this.props.maxSwipeDistance}},{key:"_setListViewScrollableTo",value:function(t){this._flatListRef&&this._flatListRef.setNativeProps({scrollEnabled:t})}},{key:"_onOpen",value:function(t){this.setState({openRowKey:t})}},{key:"_onClose",value:function(t){this.setState({openRowKey:null})}}]),_})(p.Component);_.defaultProps=t({},w.defaultProps,{bounceFirstRowOnMount:!0,renderQuickActions:function(){return null}}),m.exports=_},311,[10,41,1,2,3,6,7,139,312,257]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),s=r(d[3]),p=r(d[4]),u=r(d[5]),l=r(d[6]),h=r(d[7]),c=r(d[8]),_=r(d[9]),v=r(d[10]),f=r(d[11]),w=l.isRTL,R=0,S=300,P=(function(l){function _(){var t,p;n(this,_);for(var l=arguments.length,c=new Array(l),v=0;v<l;v++)c[v]=arguments[v];return(p=o(this,(t=s(_)).call.apply(t,[this].concat(c))))._handleMoveShouldSetPanResponderCapture=function(n,t){return t.dy<10&&p._isValidSwipe(t)},p._handlePanResponderGrant=function(n,t){},p._handlePanResponderMove=function(n,t){p._isSwipingExcessivelyRightFromClosedPosition(t)||(p.props.onSwipeStart&&p.props.onSwipeStart(),p._isSwipingRightFromClosed(t)?p._swipeSlowSpeed(t):p._swipeFullSpeed(t))},p._onPanResponderTerminationRequest=function(n,t){return!1},p._handlePanResponderEnd=function(n,t){var o=w?-t.dx:t.dx;p._isSwipingRightFromClosed(t)?(p.props.onOpen&&p.props.onOpen(),p._animateBounceBack(S)):p._shouldAnimateRemainder(t)?o<0?(p.props.onOpen&&p.props.onOpen(),p._animateToOpenPositionWith(t.vx,o)):(p.props.onClose&&p.props.onClose(),p._animateToClosedPosition()):p._previousLeft===R?p._animateToClosedPosition():p._animateToOpenPosition(),p.props.onSwipeEnd&&p.props.onSwipeEnd()},p._panResponder=h.create({onMoveShouldSetPanResponderCapture:p._handleMoveShouldSetPanResponderCapture,onPanResponderGrant:p._handlePanResponderGrant,onPanResponderMove:p._handlePanResponderMove,onPanResponderRelease:p._handlePanResponderEnd,onPanResponderTerminationRequest:p._onPanResponderTerminationRequest,onPanResponderTerminate:p._handlePanResponderEnd,onShouldBlockNativeResponder:function(n,t){return!1}}),p._previousLeft=R,p._timeoutID=null,p.state={currentLeft:new u.Value(p._previousLeft),isSwipeableViewRendered:!1,rowHeight:null},p._onSwipeableViewLayout=function(n){p.setState({isSwipeableViewRendered:!0,rowHeight:n.nativeEvent.layout.height})},p._animateToClosedPositionDuringBounce=function(){p._animateToClosedPosition(S)},p}return p(_,l),t(_,[{key:"componentDidMount",value:function(){var n=this;this.props.shouldBounceOnMount&&(this._timeoutID=setTimeout(function(){n._animateBounceBack(400)},700))}},{key:"UNSAFE_componentWillReceiveProps",value:function(n){var t,o,s=null!=(t=this.props.isOpen)&&t,p=null!=(o=n.isOpen)&&o;s&&!p&&this._animateToClosedPosition()}},{key:"componentWillUnmount",value:function(){null!=this._timeoutID&&clearTimeout(this._timeoutID)}},{key:"render",value:function(){var n;this.state.isSwipeableViewRendered&&this.state.rowHeight&&(n=c.createElement(v,{style:[y.slideOutContainer,{height:this.state.rowHeight}]},this.props.slideoutView));var t=c.createElement(u.View,{onLayout:this._onSwipeableViewLayout,style:{transform:[{translateX:this.state.currentLeft}]}},this.props.children);return c.createElement(v,this._panResponder.panHandlers,n,t)}},{key:"close",value:function(){this.props.onClose&&this.props.onClose(),this._animateToClosedPosition()}},{key:"_isSwipingRightFromClosed",value:function(n){var t=w?-n.dx:n.dx;return this._previousLeft===R&&t>0}},{key:"_swipeFullSpeed",value:function(n){this.state.currentLeft.setValue(this._previousLeft+n.dx)}},{key:"_swipeSlowSpeed",value:function(n){this.state.currentLeft.setValue(this._previousLeft+n.dx/4)}},{key:"_isSwipingExcessivelyRightFromClosedPosition",value:function(n){var t=w?-n.dx:n.dx;return this._isSwipingRightFromClosed(n)&&t>120}},{key:"_animateTo",value:function(n){var t=this,o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:300,s=arguments.length>2&&void 0!==arguments[2]?arguments[2]:f;u.timing(this.state.currentLeft,{duration:o,toValue:n,useNativeDriver:!0}).start(function(){t._previousLeft=n,s()})}},{key:"_animateToOpenPosition",value:function(){var n,t=null!=(n=this.props.maxSwipeDistance)?n:0,o=w?-t:t;this._animateTo(-o)}},{key:"_animateToOpenPositionWith",value:function(n,t){var o;n=n>.3?n:.3;var s=null!=(o=this.props.maxSwipeDistance)?o:0,p=Math.abs((s-Math.abs(t))/n),u=w?-s:s;this._animateTo(-u,p)}},{key:"_animateToClosedPosition",value:function(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:300;this._animateTo(R,n)}},{key:"_animateBounceBack",value:function(n){var t=w?-30:30;this._animateTo(-t,n,this._animateToClosedPositionDuringBounce)}},{key:"_isValidSwipe",value:function(n){var t;return!(null!=(t=this.props.preventSwipeRight)&&t&&this._previousLeft===R&&n.dx>0)&&Math.abs(n.dx)>10}},{key:"_shouldAnimateRemainder",value:function(n){var t,o=null!=(t=this.props.swipeThreshold)?t:30;return Math.abs(n.dx)>o||n.vx>.3}}]),_})(c.Component),y=_.create({slideOutContainer:{bottom:0,left:0,position:'absolute',right:0,top:0}});m.exports=P},312,[1,2,3,6,7,227,300,313,139,140,159,35]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),o=r(d[1]),t=o.currentCentroidXOfTouchesChangedAfter,u=o.currentCentroidYOfTouchesChangedAfter,s=o.previousCentroidXOfTouchesChangedAfter,c=o.previousCentroidYOfTouchesChangedAfter,p=o.currentCentroidX,v=o.currentCentroidY,h={_initializeGestureState:function(n){n.moveX=0,n.moveY=0,n.x0=0,n.y0=0,n.dx=0,n.dy=0,n.vx=0,n.vy=0,n.numberActiveTouches=0,n._accountsForMovesUpTo=0},_updateGestureStateOnMove:function(n,o){n.numberActiveTouches=o.numberActiveTouches,n.moveX=t(o,n._accountsForMovesUpTo),n.moveY=u(o,n._accountsForMovesUpTo);var p=n._accountsForMovesUpTo,v=s(o,p),h=t(o,p),l=c(o,p),S=u(o,p),R=n.dx+(h-v),T=n.dy+(S-l),f=o.mostRecentTimeStamp-n._accountsForMovesUpTo;n.vx=(R-n.dx)/f,n.vy=(T-n.dy)/f,n.dx=R,n.dy=T,n._accountsForMovesUpTo=o.mostRecentTimeStamp},create:function(o){var t={handle:null},u={stateID:Math.random(),moveX:0,moveY:0,x0:0,y0:0,dx:0,dy:0,vx:0,vy:0,numberActiveTouches:0,_accountsForMovesUpTo:0};return{panHandlers:{onStartShouldSetResponder:function(n){return null!=o.onStartShouldSetPanResponder&&o.onStartShouldSetPanResponder(n,u)},onMoveShouldSetResponder:function(n){return null!=o.onMoveShouldSetPanResponder&&o.onMoveShouldSetPanResponder(n,u)},onStartShouldSetResponderCapture:function(n){return 1===n.nativeEvent.touches.length&&h._initializeGestureState(u),u.numberActiveTouches=n.touchHistory.numberActiveTouches,null!=o.onStartShouldSetPanResponderCapture&&o.onStartShouldSetPanResponderCapture(n,u)},onMoveShouldSetResponderCapture:function(n){var t=n.touchHistory;return u._accountsForMovesUpTo!==t.mostRecentTimeStamp&&(h._updateGestureStateOnMove(u,t),!!o.onMoveShouldSetPanResponderCapture&&o.onMoveShouldSetPanResponderCapture(n,u))},onResponderGrant:function(s){return t.handle||(t.handle=n.createInteractionHandle()),u.x0=p(s.touchHistory),u.y0=v(s.touchHistory),u.dx=0,u.dy=0,o.onPanResponderGrant&&o.onPanResponderGrant(s,u),null==o.onShouldBlockNativeResponder||o.onShouldBlockNativeResponder(s,u)},onResponderReject:function(n){l(t,o.onPanResponderReject,n,u)},onResponderRelease:function(n){l(t,o.onPanResponderRelease,n,u),h._initializeGestureState(u)},onResponderStart:function(n){var t=n.touchHistory;u.numberActiveTouches=t.numberActiveTouches,o.onPanResponderStart&&o.onPanResponderStart(n,u)},onResponderMove:function(n){var t=n.touchHistory;u._accountsForMovesUpTo!==t.mostRecentTimeStamp&&(h._updateGestureStateOnMove(u,t),o.onPanResponderMove&&o.onPanResponderMove(n,u))},onResponderEnd:function(n){var s=n.touchHistory;u.numberActiveTouches=s.numberActiveTouches,l(t,o.onPanResponderEnd,n,u)},onResponderTerminate:function(n){l(t,o.onPanResponderTerminate,n,u),h._initializeGestureState(u)},onResponderTerminationRequest:function(n){return null==o.onPanResponderTerminationRequest||o.onPanResponderTerminationRequest(n,u)}},getInteractionHandle:function(){return t.handle}}}};function l(o,t,u,s){o.handle&&(n.clearInteractionHandle(o.handle),o.handle=null),t&&t(u,s)}m.exports=h},313,[235,314]);
+__d(function(g,r,i,a,m,e,d){var n={centroidDimension:function(t,o,u,c){var f=t.touchBank,s=0,h=0,v=1===t.numberActiveTouches?t.touchBank[t.indexOfSingleActiveTouch]:null;if(null!==v)v.touchActive&&v.currentTimeStamp>o&&(s+=c&&u?v.currentPageX:c&&!u?v.currentPageY:!c&&u?v.previousPageX:v.previousPageY,h=1);else for(var C=0;C<f.length;C++){var l=f[C];if(null!==l&&void 0!==l&&l.touchActive&&l.currentTimeStamp>=o){s+=c&&u?l.currentPageX:c&&!u?l.currentPageY:!c&&u?l.previousPageX:l.previousPageY,h++}}return h>0?s/h:n.noCentroid},currentCentroidXOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!0,!0)},currentCentroidYOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!1,!0)},previousCentroidXOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!0,!1)},previousCentroidYOfTouchesChangedAfter:function(t,o){return n.centroidDimension(t,o,!1,!1)},currentCentroidX:function(t){return n.centroidDimension(t,0,!0,!0)},currentCentroidY:function(t){return n.centroidDimension(t,0,!1,!0)},noCentroid:-1};m.exports=n},314,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),c=r(d[5]),l=r(d[6]),p=r(d[7]),S=r(d[8]),f=r(d[9]),w=(function(w){function h(t,u){var c;return n(this,h),(c=o(this,s(h).call(this,t,u)))._listViewRef=null,c._shouldBounceFirstRowOnMount=!1,c._onScroll=function(t){c.props.dataSource.getOpenRowID()&&c.setState({dataSource:c.state.dataSource.setOpenRowID(null)}),c.props.onScroll&&c.props.onScroll(t)},c._renderRow=function(t,n,o){var s=c.props.renderQuickActions(t,n,o);if(!s)return c.props.renderRow(t,n,o);var u=!1;return c._shouldBounceFirstRowOnMount&&(c._shouldBounceFirstRowOnMount=!1,u=o===c.props.dataSource.getFirstRowID()),p.createElement(f,{slideoutView:s,isOpen:t.id===c.props.dataSource.getOpenRowID(),maxSwipeDistance:c._getMaxSwipeDistance(t,n,o),key:o,onOpen:function(){return c._onOpen(t.id)},onClose:function(){return c._onClose(t.id)},onSwipeEnd:function(){return c._setListViewScrollable(!0)},onSwipeStart:function(){return c._setListViewScrollable(!1)},shouldBounceOnMount:u},c.props.renderRow(t,n,o))},c._shouldBounceFirstRowOnMount=c.props.bounceFirstRowOnMount,c.state={dataSource:c.props.dataSource},c}return c(h,w),u(h,null,[{key:"getNewDataSource",value:function(){return new S({getRowData:function(t,n,o){return t[n][o]},getSectionHeaderData:function(t,n){return t[n]},rowHasChanged:function(t,n){return t!==n},sectionHeaderHasChanged:function(t,n){return t!==n}})}}]),u(h,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.state.dataSource.getDataSource()!==t.dataSource.getDataSource()&&this.setState({dataSource:t.dataSource})}},{key:"render",value:function(){var n=this;return p.createElement(l,t({},this.props,{ref:function(t){n._listViewRef=t},dataSource:this.state.dataSource.getDataSource(),onScroll:this._onScroll,renderRow:this._renderRow}))}},{key:"_setListViewScrollable",value:function(t){this._listViewRef&&'function'==typeof this._listViewRef.setNativeProps&&this._listViewRef.setNativeProps({scrollEnabled:t})}},{key:"getScrollResponder",value:function(){if(this._listViewRef&&'function'==typeof this._listViewRef.getScrollResponder)return this._listViewRef.getScrollResponder()}},{key:"_getMaxSwipeDistance",value:function(t,n,o){return'function'==typeof this.props.maxSwipeDistance?this.props.maxSwipeDistance(t,n,o):this.props.maxSwipeDistance}},{key:"_onOpen",value:function(t){this.setState({dataSource:this.state.dataSource.setOpenRowID(t)})}},{key:"_onClose",value:function(t){this.setState({dataSource:this.state.dataSource.setOpenRowID(null)})}}]),h})(p.Component);w.defaultProps={bounceFirstRowOnMount:!1,renderQuickActions:function(){return null}},m.exports=w},315,[41,1,3,6,2,7,291,139,316,312]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=(function(){function s(n){var h=this;t(this,s),this._dataSource=new o({getRowData:n.getRowData,getSectionHeaderData:n.getSectionHeaderData,rowHasChanged:function(t,o){return t.id!==h._previousOpenRowID&&o.id===h._openRowID||t.id===h._previousOpenRowID&&o.id!==h._openRowID||n.rowHasChanged(t,o)},sectionHeaderHasChanged:n.sectionHeaderHasChanged})}return n(s,[{key:"cloneWithRowsAndSections",value:function(t,n,o){return this._dataSource=this._dataSource.cloneWithRowsAndSections(t,n,o),this._dataBlob=t,this.rowIdentities=this._dataSource.rowIdentities,this.sectionIdentities=this._dataSource.sectionIdentities,this}},{key:"getDataSource",value:function(){return this._dataSource}},{key:"getOpenRowID",value:function(){return this._openRowID}},{key:"getFirstRowID",value:function(){return this.rowIdentities?this.rowIdentities[0]&&this.rowIdentities[0][0]:Object.keys(this._dataBlob)[0]}},{key:"getLastRowID",value:function(){if(this.rowIdentities&&this.rowIdentities.length){var t=this.rowIdentities[this.rowIdentities.length-1];if(t&&t.length)return t[t.length-1]}return Object.keys(this._dataBlob)[this._dataBlob.length-1]}},{key:"setOpenRowID",value:function(t){return this._previousOpenRowID=this._openRowID,this._openRowID=t,this._dataSource=this._dataSource.cloneWithRowsAndSections(this._dataBlob,this.sectionIdentities,this.rowIdentities),this}}]),s})();m.exports=s},316,[1,2,293]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),c=r(d[5]),l=r(d[6]),p=r(d[7]),f=r(d[8]),v=!1,b=(function(l){function p(){return t(this,p),o(this,s(p).apply(this,arguments))}return u(p,l),n(p,[{key:"componentDidMount",value:function(){v||(console.warn("TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. Please use react-native-tab-view instead."),v=!0)}},{key:"render",value:function(){return c.createElement(f,{style:[this.props.style,h.tabGroup]},this.props.children)}}]),p})(c.Component);b.Item=p;var h=l.create({tabGroup:{flex:1}});m.exports=b},317,[1,2,3,6,7,139,140,318,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),p=r(d[7]),b=!1,h=(function(p){function h(){return t(this,h),o(this,s(h).apply(this,arguments))}return l(h,p),n(h,[{key:"componentDidMount",value:function(){b||(console.warn("TabBarIOS and TabBarItemIOS are deprecated and will be removed in a future release. Please use react-native-tab-view instead."),b=!0)}},{key:"render",value:function(){return this.props.selected?u.createElement(c,{style:[this.props.style,f.tab]},this.props.children):u.createElement(c,null)}}]),h})(u.Component),f=p.create({tab:{top:0,right:0,bottom:0,left:0,borderColor:'red',borderWidth:1}});m.exports=h},318,[1,2,3,6,7,139,159,140]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n=r(d[0]),s=r(d[1]),o=r(d[2]),l=r(d[3]),c=r(d[4]),u=r(d[5]),p=r(d[6]),h=r(d[7]),f=r(d[8]),b=r(d[9]),y=r(d[10]),_=r(d[11]),v=(r(d[12]),r(d[13])),S=r(d[14]),C=r(d[15]),x=r(d[16]),T=r(d[17]),I=r(d[18]),F=r(d[19]),R=r(d[20]),N=r(d[21]),E=r(d[22]),L=r(d[23]),D=r(d[24]),O=r(d[25]);r(d[26]);t=O('AndroidTextInput');var w=['phoneNumber','link','address','calendarEvent','none','all','ortography','spelling','grammar','quote','dash','replacement','correction','regularExpression','transitInformation'],A=E({displayName:'TextInput',statics:{State:{currentlyFocusedField:F.currentlyFocusedField,focusTextInput:F.focusTextInput,blurTextInput:F.blurTextInput}},propTypes:p({},f,{autoCapitalize:v.oneOf(['none','sentences','words','characters']),autoCorrect:v.bool,spellCheck:v.bool,autoFocus:v.bool,allowFontScaling:v.bool,maxFontSizeMultiplier:v.number,editable:v.bool,keyboardType:v.oneOf(['default','email-address','numeric','phone-pad','number-pad','ascii-capable','numbers-and-punctuation','url','name-phone-pad','decimal-pad','twitter','web-search','visible-password']),keyboardAppearance:v.oneOf(['default','light','dark']),returnKeyType:v.oneOf(['done','go','next','search','send','none','previous','default','emergency-call','google','join','route','yahoo']),returnKeyLabel:v.string,maxLength:v.number,numberOfLines:v.number,disableFullscreenUI:v.bool,enablesReturnKeyAutomatically:v.bool,multiline:v.bool,textBreakStrategy:v.oneOf(['simple','highQuality','balanced']),onBlur:v.func,onFocus:v.func,onChange:v.func,onChangeText:v.func,onContentSizeChange:v.func,onTextInput:v.func,onEndEditing:v.func,onSelectionChange:v.func,onSubmitEditing:v.func,onKeyPress:v.func,onLayout:v.func,onScroll:v.func,placeholder:v.string,placeholderTextColor:h,scrollEnabled:v.bool,scrollEnabled:v.bool,secureTextEntry:v.bool,selectionColor:h,selectionState:v.instanceOf(b),selection:v.shape({start:v.number.isRequired,end:v.number}),value:v.string,defaultValue:v.string,clearButtonMode:v.oneOf(['never','while-editing','unless-editing','always']),clearTextOnFocus:v.bool,selectTextOnFocus:v.bool,blurOnSubmit:v.bool,style:T.propTypes.style,underlineColorAndroid:h,inlineImageLeft:v.string,inlineImagePadding:v.number,dataDetectorTypes:v.oneOfType([v.oneOf(w),v.arrayOf(v.oneOf(w))]),caretHidden:v.bool,contextMenuHidden:v.bool,inputAccessoryViewID:v.string,textContentType:v.oneOf(['none','URL','addressCity','addressCityAndState','addressState','countryName','creditCardNumber','emailAddress','familyName','fullStreetAddress','givenName','jobTitle','location','middleName','name','namePrefix','nameSuffix','nickname','organizationName','postalCode','streetAddressLine1','streetAddressLine2','sublocality','telephoneNumber','username','password','newPassword','oneTimeCode'])}),getDefaultProps:function(){return{allowFontScaling:!0,underlineColorAndroid:'transparent'}},mixins:[_],isFocused:function(){return F.currentlyFocusedField()===C.findNodeHandle(this._inputRef)},getTextViewHandle:function(){return C.findNodeHandle(this._inputRef)},_inputRef:void 0,_focusSubscription:void 0,_lastNativeText:void 0,_lastNativeSelection:void 0,_rafId:null,componentDidMount:function(){var t=this;this._lastNativeText=this.props.value;var n=C.findNodeHandle(this._inputRef);null!=n&&F.registerInput(n),this.context.focusEmitter?(this._focusSubscription=this.context.focusEmitter.addListener('focus',function(n){t===n?t._rafId=requestAnimationFrame(t.focus):t.isFocused()&&t.blur()}),this.props.autoFocus&&this.context.onFocusRequested(this)):this.props.autoFocus&&(this._rafId=requestAnimationFrame(this.focus))},componentWillUnmount:function(){this._focusSubscription&&this._focusSubscription.remove(),this.isFocused()&&this.blur();var t=C.findNodeHandle(this._inputRef);null!=t&&F.unregisterInput(t),null!=this._rafId&&cancelAnimationFrame(this._rafId)},contextTypes:{onFocusRequested:v.func,focusEmitter:v.instanceOf(y)},clear:function(){this.setNativeProps({text:''})},render:function(){var t;return t=this._renderAndroid(),S.createElement(I.Provider,{value:!0},t)},_getText:function(){return'string'==typeof this.props.value?this.props.value:'string'==typeof this.props.defaultValue?this.props.defaultValue:''},_setNativeRef:function(t){this._inputRef=t},_renderIOSLegacy:function(){var t,n=u({},this.props);if(n.style=[this.props.style],n.selection&&null==n.selection.end&&(n.selection={start:n.selection.start,end:n.selection.start}),n.multiline){var s=n.children,o=0;S.Children.forEach(s,function(){return++o}),D(!(n.value&&o),'Cannot specify both value and children.'),o>=1&&(s=S.createElement(T,{style:n.style,allowFontScaling:n.allowFontScaling,maxFontSizeMultiplier:n.maxFontSizeMultiplier},s)),n.inputView&&(s=[s,n.inputView]),n.style.unshift(B.multilineInput),t=S.createElement(void 0,u({ref:this._setNativeRef},n,{children:s,onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onContentSizeChange:this.props.onContentSizeChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,onSelectionChangeShouldSetResponder:L.thatReturnsTrue,text:this._getText(),dataDetectorTypes:this.props.dataDetectorTypes,onScroll:this._onScroll}))}else t=S.createElement(void 0,u({ref:this._setNativeRef},n,{onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onSelectionChange:this._onSelectionChange,onSelectionChangeShouldSetResponder:L.thatReturnsTrue,text:this._getText()}));return S.createElement(R,{onLayout:n.onLayout,onPress:this._onPress,rejectResponderTermination:!0,accessible:n.accessible,accessibilityLabel:n.accessibilityLabel,accessibilityHint:n.accessibilityHint,accessibilityRole:n.accessibilityRole,accessibilityStates:n.accessibilityStates,nativeID:this.props.nativeID,testID:n.testID},t)},_renderIOS:function(){var t=u({},this.props);t.style=[this.props.style],t.selection&&null==t.selection.end&&(t.selection={start:t.selection.start,end:t.selection.start});var n=void t.multiline;t.multiline&&t.style.unshift(B.multilineInput);var s=S.createElement(n,u({ref:this._setNativeRef},t,{onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onContentSizeChange:this.props.onContentSizeChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,onSelectionChangeShouldSetResponder:L.thatReturnsTrue,text:this._getText(),dataDetectorTypes:this.props.dataDetectorTypes,onScroll:this._onScroll}));return S.createElement(R,{onLayout:t.onLayout,onPress:this._onPress,rejectResponderTermination:!0,accessible:t.accessible,accessibilityLabel:t.accessibilityLabel,accessibilityRole:t.accessibilityRole,accessibilityStates:t.accessibilityStates,nativeID:this.props.nativeID,testID:t.testID},s)},_renderAndroid:function(){var n=u({},this.props);n.style=[this.props.style],n.autoCapitalize=N.getViewManagerConfig('AndroidTextInput').Constants.AutoCapitalizationType[n.autoCapitalize||'sentences'];var s=this.props.children,o=0;S.Children.forEach(s,function(){return++o}),D(!(this.props.value&&o),'Cannot specify both value and children.'),o>1&&(s=S.createElement(T,null,s)),n.selection&&null==n.selection.end&&(n.selection={start:n.selection.start,end:n.selection.start});var l=S.createElement(t,u({ref:this._setNativeRef},n,{mostRecentEventCount:0,onFocus:this._onFocus,onBlur:this._onBlur,onChange:this._onChange,onSelectionChange:this._onSelectionChange,onTextInput:this._onTextInput,text:this._getText(),children:s,disableFullscreenUI:this.props.disableFullscreenUI,textBreakStrategy:this.props.textBreakStrategy,onScroll:this._onScroll}));return S.createElement(R,{onLayout:n.onLayout,onPress:this._onPress,accessible:this.props.accessible,accessibilityLabel:this.props.accessibilityLabel,accessibilityHint:this.props.accessibilityHint,accessibilityRole:this.props.accessibilityRole,accessibilityStates:this.props.accessibilityStates,nativeID:this.props.nativeID,testID:this.props.testID},l)},_renderWindows:function(){var t=u({},this.props);return t.style=[B.input,this.props.style],S.createElement(RCTTextInput,u({ref:this._setNativeRef},t,{text:this._getText()}))},_onFocus:function(t){F.setFocusedTextInput(C.findNodeHandle(this._inputRef)),this.props.onFocus&&this.props.onFocus(t),this.props.selectionState&&this.props.selectionState.focus()},_onPress:function(t){(this.props.editable||void 0===this.props.editable)&&this.focus()},_onChange:function(t){this._inputRef&&this._inputRef.setNativeProps&&this._inputRef.setNativeProps({mostRecentEventCount:t.nativeEvent.eventCount});var n=t.nativeEvent.text;this.props.onChange&&this.props.onChange(t),this.props.onChangeText&&this.props.onChangeText(n),this._inputRef&&(this._lastNativeText=n,this.forceUpdate())},_onSelectionChange:function(t){this.props.onSelectionChange&&this.props.onSelectionChange(t),this._inputRef&&(this._lastNativeSelection=t.nativeEvent.selection,(this.props.selection||this.props.selectionState)&&this.forceUpdate())},componentDidUpdate:function(){var t={};this._lastNativeText!==this.props.value&&'string'==typeof this.props.value&&(t.text=this.props.value);var n=this.props.selection;this._lastNativeSelection&&n&&(this._lastNativeSelection.start!==n.start||this._lastNativeSelection.end!==n.end)&&(t.selection=this.props.selection),Object.keys(t).length>0&&this._inputRef&&this._inputRef.setNativeProps&&this._inputRef.setNativeProps(t),this.props.selectionState&&n&&this.props.selectionState.update(n.start,n.end)},_onBlur:function(t){F.clearFocusedTextInput(C.findNodeHandle(this._inputRef)),this.blur(),this.props.onBlur&&this.props.onBlur(t),this.props.selectionState&&this.props.selectionState.blur()},_onTextInput:function(t){this.props.onTextInput&&this.props.onTextInput(t)},_onScroll:function(t){this.props.onScroll&&this.props.onScroll(t)}}),P=((function(t){function u(){return n(this,u),o(this,l(u).apply(this,arguments))}c(u,t),s(u,[{key:"clear",value:function(){}},{key:"isFocused",value:function(){}}])})(C.NativeComponent),A),B=x.create({multilineInput:{paddingTop:5}});m.exports=P},319,[1,2,3,6,7,41,10,146,214,320,31,217,74,136,139,43,140,173,160,130,218,122,219,35,20,162,78]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),f=r(d[2]),u=(function(){function f(s,u){t(this,f),this._anchorOffset=s,this._focusOffset=u,this._hasFocus=!1}return s(f,[{key:"update",value:function(t,s){this._anchorOffset===t&&this._focusOffset===s||(this._anchorOffset=t,this._focusOffset=s,this.emit('update'))}},{key:"constrainLength",value:function(t){this.update(Math.min(this._anchorOffset,t),Math.min(this._focusOffset,t))}},{key:"focus",value:function(){this._hasFocus||(this._hasFocus=!0,this.emit('focus'))}},{key:"blur",value:function(){this._hasFocus&&(this._hasFocus=!1,this.emit('blur'))}},{key:"hasFocus",value:function(){return this._hasFocus}},{key:"isCollapsed",value:function(){return this._anchorOffset===this._focusOffset}},{key:"isBackward",value:function(){return this._anchorOffset>this._focusOffset}},{key:"getAnchorOffset",value:function(){return this._hasFocus?this._anchorOffset:null}},{key:"getFocusOffset",value:function(){return this._hasFocus?this._focusOffset:null}},{key:"getStartOffset",value:function(){return this._hasFocus?Math.min(this._anchorOffset,this._focusOffset):null}},{key:"getEndOffset",value:function(){return this._hasFocus?Math.max(this._anchorOffset,this._focusOffset):null}},{key:"overlaps",value:function(t,s){return this.hasFocus()&&this.getStartOffset()<=s&&t<=this.getEndOffset()}}]),f})();f(u,{blur:!0,focus:!0,update:!0}),m.exports=u},320,[1,2,321]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),_=r(d[3]),o=r(d[4]),v=r(d[5])({__types:!0});var E={emit:function(t,n,s,_,o,v,E){return this.__getEventEmitter().emit(t,n,s,_,o,v,E)},emitAndHold:function(t,n,s,_,o,v,E){return this.__getEventEmitter().emitAndHold(t,n,s,_,o,v,E)},addListener:function(t,n,s){return this.__getEventEmitter().addListener(t,n,s)},once:function(t,n,s){return this.__getEventEmitter().once(t,n,s)},addRetroactiveListener:function(t,n,s){return this.__getEventEmitter().addRetroactiveListener(t,n,s)},addListenerMap:function(t,n){return this.__getEventEmitter().addListenerMap(t,n)},addRetroactiveListenerMap:function(t,n){return this.__getEventEmitter().addListenerMap(t,n)},removeAllListeners:function(){this.__getEventEmitter().removeAllListeners()},removeCurrentListener:function(){this.__getEventEmitter().removeCurrentListener()},releaseHeldEventType:function(t){this.__getEventEmitter().releaseHeldEventType(t)},__getEventEmitter:function(){if(!this.__eventEmitter){var t=new n,o=new _;this.__eventEmitter=new s(t,o)}return this.__eventEmitter}};m.exports=function(n,s){o(s,'Must supply set of valid event types');var _=n.prototype||n;o(!_.__eventEmitter,'An active emitter is already mixed in');var u=n.constructor;u&&o(u===Object||u===Function,'Mix EventEmitter into a class, not an instance'),_.hasOwnProperty(v)?t(_.__types,s):_.__types?_.__types=t({},_.__types,s):_.__types=s,t(_,E)}},321,[41,31,322,323,20,324]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=(function(){function s(n,l){t(this,s),this._emitter=n,this._eventHolder=l,this._currentEventToken=null,this._emittingHeldEvents=!1}return n(s,[{key:"addListener",value:function(t,n,s){return this._emitter.addListener(t,n,s)}},{key:"once",value:function(t,n,s){return this._emitter.once(t,n,s)}},{key:"addRetroactiveListener",value:function(t,n,s){var l=this._emitter.addListener(t,n,s);return this._emittingHeldEvents=!0,this._eventHolder.emitToListener(t,n,s),this._emittingHeldEvents=!1,l}},{key:"removeAllListeners",value:function(t){this._emitter.removeAllListeners(t)}},{key:"removeCurrentListener",value:function(){this._emitter.removeCurrentListener()}},{key:"listeners",value:function(t){return this._emitter.listeners(t)}},{key:"emit",value:function(t){for(var n,s=arguments.length,l=new Array(s>1?s-1:0),o=1;o<s;o++)l[o-1]=arguments[o];(n=this._emitter).emit.apply(n,[t].concat(l))}},{key:"emitAndHold",value:function(t){for(var n,s,l=arguments.length,o=new Array(l>1?l-1:0),u=1;u<l;u++)o[u-1]=arguments[u];this._currentEventToken=(n=this._eventHolder).holdEvent.apply(n,[t].concat(o)),(s=this._emitter).emit.apply(s,[t].concat(o)),this._currentEventToken=null}},{key:"releaseCurrentEvent",value:function(){this._currentEventToken?this._eventHolder.releaseEvent(this._currentEventToken):this._emittingHeldEvents&&this._eventHolder.releaseCurrentEvent()}},{key:"releaseHeldEventType",value:function(t){this._eventHolder.releaseEventType(t)}}]),s})();m.exports=s},322,[1,2]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),v=(function(){function v(){t(this,v),this._heldEvents={},this._currentEventKey=null}return n(v,[{key:"holdEvent",value:function(t){this._heldEvents[t]=this._heldEvents[t]||[];for(var n=this._heldEvents[t],s={eventType:t,index:n.length},v=arguments.length,h=new Array(v>1?v-1:0),u=1;u<v;u++)h[u-1]=arguments[u];return n.push(h),s}},{key:"emitToListener",value:function(t,n,s){var v=this,h=this._heldEvents[t];if(h){var u=this._currentEventKey;h.forEach(function(h,u){h&&(v._currentEventKey={eventType:t,index:u},n.apply(s,h))}),this._currentEventKey=u}}},{key:"releaseCurrentEvent",value:function(){s(null!==this._currentEventKey,'Not in an emitting cycle; there is no current event'),this._currentEventKey&&this.releaseEvent(this._currentEventKey)}},{key:"releaseEvent",value:function(t){delete this._heldEvents[t.eventType][t.index]}},{key:"releaseEventType",value:function(t){this._heldEvents[t]=[]}}]),v})();m.exports=v},323,[1,2,20]);
+__d(function(g,r,i,a,m,e,d){"use strict";m.exports=function(n){var t;for(t in n)if(n.hasOwnProperty(t))return t;return null}},324,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).ToastAndroid,o={SHORT:t.SHORT,LONG:t.LONG,TOP:t.TOP,BOTTOM:t.BOTTOM,CENTER:t.CENTER,show:function(o,s){t.show(o,s)},showWithGravity:function(o,s,O){t.showWithGravity(o,s,O)},showWithGravityAndOffset:function(o,s,O,n,T){t.showWithGravityAndOffset(o,s,O,n,T)}};m.exports=o},325,[38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),p=r(d[5]),c=r(d[6]),h=r(d[7]),u=r(d[8]),P=r(d[9]),S=r(d[10]),f=r(d[11]),y=r(d[12])('AndroidViewPager'),w='viewPager',C=(function(C){function v(){var t,l;o(this,v);for(var h=arguments.length,y=new Array(h),C=0;C<h;C++)y[C]=arguments[C];return(l=s(this,(t=p(v)).call.apply(t,[this].concat(y)))).getInnerViewNode=function(){return l.refs[w].getInnerViewNode()},l._childrenWithOverridenStyle=function(){return u.Children.map(l.props.children,function(t){if(!t)return null;var o=n({},t.props,{style:[t.props.style,{position:'absolute',left:0,top:0,right:0,bottom:0,width:void 0,height:void 0}],collapsable:!1});return t.type&&t.type.displayName&&'RCTView'!==t.type.displayName&&'View'!==t.type.displayName&&console.warn('Each ViewPager child must be a <View>. Was '+t.type.displayName),u.createElement(t.type,o)})},l._onPageScroll=function(t){l.props.onPageScroll&&l.props.onPageScroll(t),'on-drag'===l.props.keyboardDismissMode&&f()},l._onPageScrollStateChanged=function(t){l.props.onPageScrollStateChanged&&l.props.onPageScrollStateChanged(t.nativeEvent.pageScrollState)},l._onPageSelected=function(t){l.props.onPageSelected&&l.props.onPageSelected(t)},l.setPage=function(t){S.dispatchViewManagerCommand(P.findNodeHandle(c(l)),S.getViewManagerConfig('AndroidViewPager').Commands.setPage,[t])},l.setPageWithoutAnimation=function(t){S.dispatchViewManagerCommand(P.findNodeHandle(c(l)),S.getViewManagerConfig('AndroidViewPager').Commands.setPageWithoutAnimation,[t])},l}return h(v,C),l(v,[{key:"componentDidMount",value:function(){null!=this.props.initialPage&&this.setPageWithoutAnimation(this.props.initialPage)}},{key:"render",value:function(){return u.createElement(y,t({},this.props,{ref:w,style:this.props.style,onPageScroll:this._onPageScroll,onPageScrollStateChanged:this._onPageScrollStateChanged,onPageSelected:this._onPageSelected,children:this._childrenWithOverridenStyle()}))}}]),v})(u.Component);m.exports=C},326,[41,10,1,2,3,6,5,7,139,43,122,197,162]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),p=r(d[5]),c=r(d[6]),h=r(d[7]),u=r(d[8]),b=r(d[9]),v=r(d[10]),f=r(d[11]),w=r(d[12]),E=r(d[13]),C=r(d[14]),S=r(d[15]),y=r(d[16]),L=r(d[17]),V=r(d[18]),R=r(d[19]),F=r(d[20]),I='webview',M=V({IDLE:null,LOADING:null,ERROR:null}),W=function(){return f.createElement(S,{style:T.loadingView},f.createElement(h,{style:T.loadingProgressBar}))},D=(function(t){function h(){var t,n;o(this,h);for(var s=arguments.length,c=new Array(s),u=0;u<s;u++)c[u]=arguments[u];return(n=l(this,(t=p(h)).call.apply(t,[this].concat(c)))).state={viewState:M.IDLE,lastErrorEvent:null,startInLoadingState:!0},n.goForward=function(){C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.goForward,null)},n.goBack=function(){C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.goBack,null)},n.reload=function(){n.setState({viewState:M.LOADING}),C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.reload,null)},n.stopLoading=function(){C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.stopLoading,null)},n.postMessage=function(t){C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.postMessage,[String(t)])},n.injectJavaScript=function(t){C.dispatchViewManagerCommand(n.getWebViewHandle(),C.getViewManagerConfig('RCTWebView').Commands.injectJavaScript,[t])},n.updateNavigationState=function(t){n.props.onNavigationStateChange&&n.props.onNavigationStateChange(t.nativeEvent)},n.getWebViewHandle=function(){return w.findNodeHandle(n.refs[I])},n.onLoadingStart=function(t){var o=n.props.onLoadStart;o&&o(t),n.updateNavigationState(t)},n.onLoadingError=function(t){t.persist();var o=n.props,s=o.onError,l=o.onLoadEnd;s&&s(t),l&&l(t),console.warn('Encountered an error loading page',t.nativeEvent),n.setState({lastErrorEvent:t.nativeEvent,viewState:M.ERROR})},n.onLoadingFinish=function(t){var o=n.props,s=o.onLoad,l=o.onLoadEnd;s&&s(t),l&&l(t),n.setState({viewState:M.IDLE}),n.updateNavigationState(t)},n.onMessage=function(t){var o=n.props.onMessage;o&&o(t)},n}return c(h,t),s(h,[{key:"UNSAFE_componentWillMount",value:function(){this.props.startInLoadingState&&this.setState({viewState:M.LOADING})}},{key:"render",value:function(){var t=null;if(this.state.viewState===M.LOADING)t=(this.props.renderLoading||W)();else if(this.state.viewState===M.ERROR){var o=this.state.lastErrorEvent;t=this.props.renderError&&this.props.renderError(o.domain,o.code,o.description)}else this.state.viewState!==M.IDLE&&console.error('RCTWebView invalid state encountered: '+this.state.loading);var s=[T.container,this.props.style];this.state.viewState!==M.LOADING&&this.state.viewState!==M.ERROR||s.push(T.hidden);var l=this.props.source||{};this.props.html?l.html=this.props.html:this.props.url&&(l.uri=this.props.url),'POST'===l.method&&l.headers?console.warn('WebView: `source.headers` is not supported when using POST.'):'GET'===l.method&&l.body&&console.warn('WebView: `source.body` is not supported when using GET.');var p=this.props.nativeConfig||{},c=(this.props.originWhitelist||[]).map(y.originWhitelistToRegex),h=p.component||A,u=f.createElement(h,n({ref:I,key:"webViewKey",style:s,source:F(l),scalesPageToFit:this.props.scalesPageToFit,allowFileAccess:this.props.allowFileAccess,injectedJavaScript:this.props.injectedJavaScript,userAgent:this.props.userAgent,javaScriptEnabled:this.props.javaScriptEnabled,thirdPartyCookiesEnabled:this.props.thirdPartyCookiesEnabled,domStorageEnabled:this.props.domStorageEnabled,messagingEnabled:'function'==typeof this.props.onMessage,onMessage:this.onMessage,contentInset:this.props.contentInset,automaticallyAdjustContentInsets:this.props.automaticallyAdjustContentInsets,onContentSizeChange:this.props.onContentSizeChange,onLoadingStart:this.onLoadingStart,onLoadingFinish:this.onLoadingFinish,onLoadingError:this.onLoadingError,testID:this.props.testID,geolocationEnabled:this.props.geolocationEnabled,mediaPlaybackRequiresUserAction:this.props.mediaPlaybackRequiresUserAction,allowUniversalAccessFromFileURLs:this.props.allowUniversalAccessFromFileURLs,originWhitelist:c,mixedContentMode:this.props.mixedContentMode,saveFormDataDisabled:this.props.saveFormDataDisabled,urlPrefixesForDefaultIntent:this.props.urlPrefixesForDefaultIntent},p.props));return f.createElement(S,{style:T.container},u,t)}}]),h})(f.Component);D.propTypes=t({},u,{renderError:v.func,renderLoading:v.func,onLoad:v.func,onLoadEnd:v.func,onLoadStart:v.func,onError:v.func,automaticallyAdjustContentInsets:v.bool,contentInset:b,onNavigationStateChange:v.func,onMessage:v.func,onContentSizeChange:v.func,startInLoadingState:v.bool,style:u.style,html:L(v.string,'Use the `source` prop instead.'),url:L(v.string,'Use the `source` prop instead.'),source:v.oneOfType([v.shape({uri:v.string,method:v.oneOf(['GET','POST']),headers:v.object,body:v.string}),v.shape({html:v.string,baseUrl:v.string}),v.number]),useWebKit:v.bool,javaScriptEnabled:v.bool,thirdPartyCookiesEnabled:v.bool,domStorageEnabled:v.bool,geolocationEnabled:v.bool,injectedJavaScript:v.string,scalesPageToFit:v.bool,allowFileAccess:v.bool,userAgent:v.string,testID:v.string,mediaPlaybackRequiresUserAction:v.bool,allowUniversalAccessFromFileURLs:v.bool,originWhitelist:v.arrayOf(v.string),injectJavaScript:v.func,mixedContentMode:v.oneOf(['never','always','compatibility']),saveFormDataDisabled:v.bool,nativeConfig:v.shape({component:v.any,props:v.object,viewManager:v.object}),urlPrefixesForDefaultIntent:v.arrayOf(v.string)}),D.defaultProps={javaScriptEnabled:!0,thirdPartyCookiesEnabled:!0,scalesPageToFit:!0,saveFormDataDisabled:!1,originWhitelist:y.defaultOriginWhitelist};var A=R('RCTWebView'),T=E.create({container:{flex:1},hidden:{height:0,flex:0},loadingView:{flex:1,justifyContent:'center',alignItems:'center'},loadingProgressBar:{height:20}});m.exports=D},327,[10,41,1,2,3,6,7,204,214,175,136,139,43,140,122,159,328,151,188,162,168]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n={defaultOriginWhitelist:['http://*','https://*'],extractOrigin:function(t){var n=/^[A-Za-z0-9]+:(\/\/)?[^/]*/.exec(t);return null===n?null:n[0]},originWhitelistToRegex:function(n){return t(n).replace(/\\\*/g,'.*')}};m.exports=n},328,[329]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=/[|\\{}()[\]^$+*?.]/g;m.exports=function(n){if('string'!=typeof n)throw new TypeError('Expected a string');return n.replace(t,'\\$&')}},329,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]).ActionSheetManager,n=r(d[2]),c=r(d[3]),s={showActionSheetWithOptions:function(s,l){n('object'==typeof s&&null!==s,'Options must be a valid object'),n('function'==typeof l,'Must provide a valid callback'),o.showActionSheetWithOptions(t({},s,{tintColor:c(s.tintColor)}),l)},showShareActionSheetWithOptions:function(s,l,u){n('object'==typeof s&&null!==s,'Options must be a valid object'),n('function'==typeof l,'Must provide a valid failureCallback'),n('function'==typeof u,'Must provide a valid successCallback'),o.showShareActionSheetWithOptions(t({},s,{tintColor:c(s.tintColor)}),l,u)}};m.exports=s},330,[10,38,20,154]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),p=r(d[4]),u=(r(d[5]),r(d[6])),v=r(d[7]).AppState,c=r(d[8]),h=r(d[9]),l=(function(l){function _(){var n;t(this,_),(n=s(this,o(_).call(this,v))).isAvailable=!0,n.isAvailable=!0,n._eventHandlers={change:new Map,memoryWarning:new Map},n.currentState=v.initialAppState||'active';var p=!1;return n.addListener('appStateDidChange',function(t){p=!0,n.currentState=t.app_state}),v.getCurrentAppState(function(t){p||n.currentState===t.app_state||(n.currentState=t.app_state,n.emit('appStateDidChange',t))},c),n}return p(_,u),n(_,[{key:"addEventListener",value:function(t,n){h(-1!==['change','memoryWarning'].indexOf(t),'Trying to subscribe to unknown event: "%s"',t),'change'===t?this._eventHandlers[t].set(n,this.addListener('appStateDidChange',function(t){n(t.app_state)})):'memoryWarning'===t&&this._eventHandlers[t].set(n,this.addListener('memoryWarning',n))}},{key:"removeEventListener",value:function(t,n){h(-1!==['change','memoryWarning'].indexOf(t),'Trying to remove listener for unknown event: "%s"',t),this._eventHandlers[t].has(n)&&(this._eventHandlers[t].get(n).remove(),this._eventHandlers[t].delete(n))}}]),_})();l=new l,m.exports=l},331,[1,2,3,6,7,86,87,38,111,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),t=r(d[1]),s=r(d[2]),n=(s.checkPropTypes,r(d[3]).CameraRollManager),u=r(d[4]),l=r(d[5]),h={Album:'Album',All:'All',Event:'Event',Faces:'Faces',Library:'Library',PhotoStream:'PhotoStream',SavedPhotos:'SavedPhotos'},p={All:'All',Videos:'Videos',Photos:'Photos'},c=(u({first:s.number.isRequired,after:s.string,groupTypes:s.oneOf(Object.keys(h)),groupName:s.string,assetType:s.oneOf(Object.keys(p)),mimeTypes:s.arrayOf(s.string)}),u({edges:s.arrayOf(u({node:u({type:s.string.isRequired,group_name:s.string.isRequired,image:u({uri:s.string.isRequired,height:s.number.isRequired,width:s.number.isRequired,isStored:s.bool,playableDuration:s.number.isRequired}).isRequired,timestamp:s.number.isRequired,location:u({latitude:s.number,longitude:s.number,altitude:s.number,heading:s.number,speed:s.number})}).isRequired})).isRequired,page_info:u({has_next_page:s.bool.isRequired,start_cursor:s.string,end_cursor:s.string}).isRequired}),(function(){function s(){o(this,s)}return t(s,null,[{key:"saveImageWithTag",value:function(o){return console.warn('`CameraRoll.saveImageWithTag()` is deprecated. Use `CameraRoll.saveToCameraRoll()` instead.'),this.saveToCameraRoll(o,'photo')}},{key:"deletePhotos",value:function(o){return n.deletePhotos(o)}},{key:"saveToCameraRoll",value:function(o,t){l('string'==typeof o,'CameraRoll.saveToCameraRoll must be a valid string.'),l('photo'===t||'video'===t||void 0===t,"The second argument to saveToCameraRoll must be 'photo' or 'video'. You passed "+(t||'unknown'));var s='photo';return t?s=t:['mov','mp4'].indexOf(o.split('.').slice(-1)[0])>=0&&(s='video'),n.saveToCameraRoll(o,s)}},{key:"getPhotos",value:function(o){if(arguments.length>1){console.warn('CameraRoll.getPhotos(tag, success, error) is deprecated.  Use the returned Promise instead');var t=arguments[1],s=arguments[2]||function(){};n.getPhotos(o).then(t,s)}return n.getPhotos(o)}}]),s})());c.GroupTypesOptions=h,c.AssetTypeOptions=p,m.exports=c},332,[1,2,136,38,177,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).Clipboard;m.exports={getString:function(){return t.getString()},setString:function(n){t.setString(n)}}},333,[38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]).DatePickerAndroid;function u(t,n){var o=t[n];'object'==typeof o&&'function'==typeof o.getMonth&&(t[n]=o.getTime())}var s=(function(){function s(){n(this,s)}return o(s,null,[{key:"open",value:function(n){return t.async(function(t){for(;;)switch(t.prev=t.next){case 0:return n&&(u(n,'date'),u(n,'minDate'),u(n,'maxDate')),t.abrupt("return",c.open(n));case 3:case"end":return t.stop()}})}},{key:"dateSetAction",get:function(){return'dateSetAction'}},{key:"dismissedAction",get:function(){return'dismissedAction'}}]),s})();m.exports=s},334,[108,1,2,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),c=r(d[2]),o=r(d[3]),s=r(d[4]),u=r(d[5]),l=r(d[6]),h=r(d[7]),p=r(d[8]),y=((function(l){function f(){return t(this,f),c(this,o(f).apply(this,arguments))}s(f,l),n(f,[{key:"render",value:function(){return u.createElement(p,{style:[y.dummyDatePickerMacOS,this.props.style]},u.createElement(h,{style:y.datePickerText},"DatePickerMacOS is not supported on this platform!"))}}])})(u.Component),l.create({dummyDatePickerMacOS:{height:100,width:300,backgroundColor:'#ffbcbc',borderWidth:1,borderColor:'red',alignItems:'center',justifyContent:'center',margin:10},datePickerText:{color:'#333333',margin:20}}));m.exports=DummyDatePickerMacOS},335,[1,2,3,6,7,139,140,173,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),n=r(d[1]).ImagePickerIOS,c={canRecordVideos:function(o){return n.canRecordVideos(o)},canUseCamera:function(o){return n.canUseCamera(o)},openCameraDialog:function(c,t,s){return c=o({videoMode:!1},c),n.openCameraDialog(c,t,s)},openSelectDialog:function(c,t,s){return c=o({showImages:!0,showVideos:!1},c),n.openSelectDialog(c,t,s)}};m.exports=c},336,[10,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n,t=r(d[0]),o=r(d[1]),c=(r(d[2]),o.NetInfo),f=new t(c),u=new Map;function s(n){return'none'!==n.type&&'unknown'!==n.type}n=function(n){return'NONE'!==n&&'UNKNOWN'!==n};var v=new Map,C={addEventListener:function(n,t){var o;if('connectionChange'===n)o=f.addListener("networkStatusDidChange",function(n){t({type:n.connectionType,effectiveType:n.effectiveConnectionType})});else{if('change'!==n)return console.warn('Trying to subscribe to unknown event: "'+n+'"'),{remove:function(){}};console.warn('NetInfo\'s "change" event is deprecated. Listen to the "connectionChange" event instead.'),o=f.addListener("networkStatusDidChange",function(n){t(n.network_info)})}return u.set(t,o),{remove:function(){return C.removeEventListener(n,t)}}},removeEventListener:function(n,t){var o=u.get(t);o&&(o.remove(),u.delete(t))},fetch:function(){return console.warn('NetInfo.fetch() is deprecated. Use NetInfo.getConnectionInfo() instead.'),c.getCurrentConnectivity().then(function(n){return n.network_info})},getConnectionInfo:function(){return c.getCurrentConnectivity().then(function(n){return{type:n.connectionType,effectiveType:n.effectiveConnectionType}})},isConnected:{addEventListener:function(t,o){var c=function(c){'change'===t?o(n(c)):'connectionChange'===t&&o(s(c))};return v.set(o,c),C.addEventListener(t,c),{remove:function(){return C.isConnected.removeEventListener(t,o)}}},removeEventListener:function(n,t){var o=v.get(t);C.removeEventListener(n,o),v.delete(t)},fetch:function(){return C.getConnectionInfo().then(s)}},isConnectionExpensive:function(){return c.isConnectionMetered()}};m.exports=C},337,[87,38,74]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=r(d[2]),c=(r(d[3]),r(d[4]).PushNotificationManager),l=r(d[5]),s=new n(c),u=new Map,f=(function(){function n(o){var c=this;t(this,n),this._data={},this._remoteNotificationCompleteCallbackCalled=!1,this._isRemote=o.remote,this._isRemote&&(this._notificationId=o.notificationId),o.remote?Object.keys(o).forEach(function(t){var n=o[t];'aps'===t?(c._alert=n.alert,c._sound=n.sound,c._badgeCount=n.badge,c._category=n.category,c._contentAvailable=n['content-available'],c._threadID=n['thread-id']):c._data[t]=n}):(this._badgeCount=o.applicationIconBadgeNumber,this._sound=o.soundName,this._alert=o.alertBody,this._data=o.userInfo,this._category=o.category)}return o(n,null,[{key:"presentLocalNotification",value:function(t){c.presentLocalNotification(t)}},{key:"scheduleLocalNotification",value:function(t){c.scheduleLocalNotification(t)}},{key:"cancelAllLocalNotifications",value:function(){c.cancelAllLocalNotifications()}},{key:"removeAllDeliveredNotifications",value:function(){c.removeAllDeliveredNotifications()}},{key:"getDeliveredNotifications",value:function(t){c.getDeliveredNotifications(t)}},{key:"removeDeliveredNotifications",value:function(t){c.removeDeliveredNotifications(t)}},{key:"setApplicationIconBadgeNumber",value:function(t){c.setApplicationIconBadgeNumber(t)}},{key:"getApplicationIconBadgeNumber",value:function(t){c.getApplicationIconBadgeNumber(t)}},{key:"cancelLocalNotifications",value:function(t){c.cancelLocalNotifications(t)}},{key:"getScheduledLocalNotifications",value:function(t){c.getScheduledLocalNotifications(t)}},{key:"addEventListener",value:function(t,o){var c;l('notification'===t||'register'===t||'registrationError'===t||'localNotification'===t,'PushNotificationIOS only supports `notification`, `register`, `registrationError`, and `localNotification` events'),'notification'===t?c=s.addListener("remoteNotificationReceived",function(t){o(new n(t))}):'localNotification'===t?c=s.addListener("localNotificationReceived",function(t){o(new n(t))}):'register'===t?c=s.addListener("remoteNotificationsRegistered",function(t){o(t.deviceToken)}):'registrationError'===t&&(c=s.addListener("remoteNotificationRegistrationError",function(t){o(t)})),u.set(t,c)}},{key:"removeEventListener",value:function(t,o){l('notification'===t||'register'===t||'registrationError'===t||'localNotification'===t,'PushNotificationIOS only supports `notification`, `register`, `registrationError`, and `localNotification` events');var n=u.get(t);n&&(n.remove(),u.delete(t))}},{key:"requestPermissions",value:function(t){var o={};return o=t?{alert:!!t.alert,badge:!!t.badge,sound:!!t.sound}:{alert:!0,badge:!0,sound:!0},c.requestPermissions(o)}},{key:"abandonPermissions",value:function(){c.abandonPermissions()}},{key:"checkPermissions",value:function(t){l('function'==typeof t,'Must provide a valid callback'),c.checkPermissions(t)}},{key:"getInitialNotification",value:function(){return c.getInitialNotification().then(function(t){return t&&new n(t)})}}]),o(n,[{key:"finish",value:function(t){this._isRemote&&this._notificationId&&!this._remoteNotificationCompleteCallbackCalled&&(this._remoteNotificationCompleteCallbackCalled=!0,c.onFinishRemoteNotification(this._notificationId,t))}},{key:"getMessage",value:function(){return this._alert}},{key:"getSound",value:function(){return this._sound}},{key:"getCategory",value:function(){return this._category}},{key:"getAlert",value:function(){return this._alert}},{key:"getContentAvailable",value:function(){return this._contentAvailable}},{key:"getBadgeCount",value:function(){return this._badgeCount}},{key:"getData",value:function(){return this._data}},{key:"getThreadID",value:function(){return this._threadID}}]),n})();f.FetchResult={NewData:'UIBackgroundFetchResultNewData',NoData:'UIBackgroundFetchResultNoData',ResultFailed:'UIBackgroundFetchResultFailed'},m.exports=f},338,[1,2,87,74,38,20]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n={get:function(n){return console.warn('Settings is not yet supported on Android'),null},set:function(n){console.warn('Settings is not yet supported on Android')},watchKeys:function(n,t){return console.warn('Settings is not yet supported on Android'),-1},clearWatch:function(n){console.warn('Settings is not yet supported on Android')}};m.exports=n},339,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';r(d[0]);var t=r(d[1]),n=r(d[2]),o=(r(d[3]),r(d[4])),s=(r(d[5]),r(d[6])),l=(s.ActionSheetManager,s.ShareModule),u=(function(){function s(){t(this,s)}return n(s,null,[{key:"share",value:function(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return o('object'==typeof t&&null!==t,'Content to share must be a valid object'),o('string'==typeof t.url||'string'==typeof t.message,'At least one of URL and message is required'),o('object'==typeof n&&null!==n,'Options must be a valid object'),o(!t.title||'string'==typeof t.title,'Invalid title: title should be a string.'),l.share(t,n.dialogTitle)}},{key:"sharedAction",get:function(){return'sharedAction'}},{key:"dismissedAction",get:function(){return'dismissedAction'}}]),s})();m.exports=u},340,[10,1,2,74,20,154,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=new t('StatusBarManager')},341,[87]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),c=r(d[2]),s=r(d[3]).TimePickerAndroid,o=(function(){function o(){t(this,o)}return c(o,null,[{key:"open",value:function(t){return n.async(function(n){for(;;)switch(n.prev=n.next){case 0:return n.abrupt("return",s.open(t));case 1:case"end":return n.stop()}})}}]),o})();o.timeSetAction='timeSetAction',o.dismissedAction='dismissedAction',m.exports=o},342,[108,1,2,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]).Vibration;r(d[1]);var n={vibrate:function(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:400,o=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if('number'==typeof n)t.vibrate(n);else{if(!Array.isArray(n))throw new Error('Vibration pattern should be a number or array');t.vibrateByPattern(n,o?0:-1)}},cancel:function(){t.cancel()}};m.exports=n},343,[38,74]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n={vibrate:function(){t(!1,'VibrationIOS is deprecated, and will be removed. Use Vibration instead.')}};m.exports=n},344,[78]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n,t=r(d[0]),u=r(d[1]),l=r(d[2]),o=r(d[3]),s=r(d[4]);n=(function(n){function c(){return t(this,c),l(this,o(c).apply(this,arguments))}return s(c,n),u(c,[{key:"render",value:function(){return null}}],[{key:"ignoreWarnings",value:function(n){}},{key:"install",value:function(){}},{key:"uninstall",value:function(){}}]),c})(r(d[5]).Component),m.exports=n},345,[1,2,3,6,7,139]);
+__d(function(g,r,i,a,m,e,d){var n=r(d[0]),o=r(d[1]);m.exports=function(t,f){return'number'!=typeof t&&'window'!==t&&(t=n.findNodeHandle(t)||'window'),o.__takeSnapshot(t,f)}},346,[43,122]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),s=n.shape({x:n.number,y:n.number});m.exports=s},347,[136]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),c=r(d[4]),s=r(d[5]),p=r(d[6]),f=p.StyleSheet,h=p.Text,u=p.View,b=(function(p){function f(){var n,c;t(this,f);for(var s=arguments.length,p=new Array(s),h=0;h<s;h++)p[h]=arguments[h];return(c=o(this,(n=l(f)).call.apply(n,[this].concat(p)))).state={description:null},c}return c(f,p),n(f,[{key:"render",value:function(){var t=this.props.description?s.createElement(h,{style:y.descriptionText},this.props.description):null;return s.createElement(u,{style:y.container},s.createElement(u,{style:y.titleContainer},s.createElement(h,{style:y.titleText},this.props.title),t),s.createElement(u,{style:y.children},this.props.children))}}]),f})(s.Component),y=f.create({container:{borderRadius:3,borderWidth:.5,borderColor:'#d6d7da',backgroundColor:'#ffffff',margin:10,marginVertical:5,overflow:'hidden'},titleContainer:{borderBottomWidth:.5,borderTopLeftRadius:3,borderTopRightRadius:2.5,borderBottomColor:'#d6d7da',backgroundColor:'#f6f7f8',paddingHorizontal:10,paddingVertical:5},titleText:{fontSize:14,fontWeight:'500'},descriptionText:{fontSize:14},children:{margin:10}});m.exports=b},348,[1,2,3,6,7,125,202]);
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+__d(function(g,r,i,a,m,e,d){'use strict';var l=[{key:'ActivityIndicatorExample',module:r(d[0])},{key:'ButtonExample',module:r(d[1])},{key:'CheckBoxExample',module:r(d[2])},{key:'FlatListExample',module:r(d[3])},{key:'ImageExample',module:r(d[4])},{key:'ListViewExample',module:r(d[5])},{key:'ListViewGridLayoutExample',module:r(d[6])},{key:'ListViewPagingExample',module:r(d[7])},{key:'ModalExample',module:r(d[8])},{key:'MultiColumnExample',module:r(d[9])},{key:'PickerExample',module:r(d[10])},{key:'ProgressBarAndroidExample',module:r(d[11])},{key:'RefreshControlExample',module:r(d[12])},{key:'ScrollViewSimpleExample',module:r(d[13])},{key:'SectionListExample',module:r(d[14])},{key:'SliderExample',module:r(d[15])},{key:'StatusBarExample',module:r(d[16])},{key:'SwipeableFlatListExample',module:r(d[17])},{key:'SwipeableListViewExample',module:r(d[18])},{key:'SwitchExample',module:r(d[19])},{key:'TextExample',module:r(d[20])},{key:'TextInputExample',module:r(d[21])},{key:'ToolbarAndroidExample',module:r(d[22])},{key:'TouchableExample',module:r(d[23])},{key:'ViewExample',module:r(d[24])},{key:'ViewPagerAndroidExample',module:r(d[25])},{key:'WebViewExample',module:r(d[26])}],o=[{key:'AccessibilityAndroidExample',module:r(d[27])},{key:'AlertExample',module:r(d[28]).AlertExample},{key:'AnimatedExample',module:r(d[29])},{key:'AppStateExample',module:r(d[30])},{key:'BorderExample',module:r(d[31])},{key:'CameraRollExample',module:r(d[32])},{key:'ClipboardExample',module:r(d[33])},{key:'DatePickerAndroidExample',module:r(d[34])},{key:'Dimensions',module:r(d[35])},{key:'GeolocationExample',module:r(d[36])},{key:'ImageEditingExample',module:r(d[37])},{key:'LayoutEventsExample',module:r(d[38])},{key:'LinkingExample',module:r(d[39])},{key:'LayoutAnimationExample',module:r(d[40])},{key:'LayoutExample',module:r(d[41])},{key:'NativeAnimationsExample',module:r(d[42])},{key:'NetInfoExample',module:r(d[43])},{key:'OrientationChangeExample',module:r(d[44])},{key:'PanResponderExample',module:r(d[45])},{key:'PermissionsExampleAndroid',module:r(d[46])},{key:'PointerEventsExample',module:r(d[47])},{key:'RTLExample',module:r(d[48])},{key:'ShareExample',module:r(d[49])},{key:'TimePickerAndroidExample',module:r(d[50])},{key:'TimerExample',module:r(d[51])},{key:'ToastAndroidExample',module:r(d[52])},{key:'TransformExample',module:r(d[53])},{key:'VibrationExample',module:r(d[54])},{key:'WebSocketExample',module:r(d[55])},{key:'XHRExample',module:r(d[56])}],u={};o.concat(l).forEach(function(l){u[l.key]=l.module});var p={APIExamples:o,ComponentExamples:l,Modules:u};m.exports=p},353,[354,357,358,359,373,381,382,383,384,385,386,387,388,389,390,391,396,397,398,399,400,403,404,406,407,408,409,412,413,414,416,417,418,422,423,424,425,426,427,428,429,430,431,435,436,437,438,439,440,441,442,443,444,445,446,447,448]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=n(r(d[2])),c=n(r(d[3])),o=n(r(d[4])),u=n(r(d[5])),s=n(r(d[6])),f=t(r(d[7])),y=r(d[8]),v=(function(t){function n(t){var c;return(0,l.default)(this,n),(c=(0,o.default)(this,(0,u.default)(n).call(this,t))).state={animating:!0},c}return(0,s.default)(n,t),(0,c.default)(n,[{key:"componentDidMount",value:function(){this.setToggleTimeout()}},{key:"componentWillUnmount",value:function(){clearTimeout(this._timer)}},{key:"setToggleTimeout",value:function(){var t=this;this._timer=setTimeout(function(){t.setState({animating:!t.state.animating}),t.setToggleTimeout()},2e3)}},{key:"render",value:function(){return f.default.createElement(y.ActivityIndicator,{animating:this.state.animating,style:[E.centering,{height:80}],size:"large"})}}]),n})(f.Component);e.displayName=void 0,e.framework='React',e.title='<ActivityIndicator>',e.description='Animated loading indicators.',e.examples=[{title:'Default (small, white)',render:function(){return f.default.createElement(y.ActivityIndicator,{style:[E.centering,E.gray],color:"white"})}},{title:'Gray',render:function(){return f.default.createElement(y.View,null,f.default.createElement(y.ActivityIndicator,{style:[E.centering]}),f.default.createElement(y.ActivityIndicator,{style:[E.centering,E.gray]}))}},{title:'Custom colors',render:function(){return f.default.createElement(y.View,{style:E.horizontal},f.default.createElement(y.ActivityIndicator,{color:"#0000ff"}),f.default.createElement(y.ActivityIndicator,{color:"#aa00aa"}),f.default.createElement(y.ActivityIndicator,{color:"#aa3300"}),f.default.createElement(y.ActivityIndicator,{color:"#00aa00"}))}},{title:'Large',render:function(){return f.default.createElement(y.ActivityIndicator,{style:[E.centering,E.gray],size:"large",color:"white"})}},{title:'Large, custom colors',render:function(){return f.default.createElement(y.View,{style:E.horizontal},f.default.createElement(y.ActivityIndicator,{size:"large",color:"#0000ff"}),f.default.createElement(y.ActivityIndicator,{size:"large",color:"#aa00aa"}),f.default.createElement(y.ActivityIndicator,{size:"large",color:"#aa3300"}),f.default.createElement(y.ActivityIndicator,{size:"large",color:"#00aa00"}))}},{title:'Start/stop',render:function(){return f.default.createElement(v,null)}},{platform:'ios',title:'Custom size',render:function(){return f.default.createElement(y.ActivityIndicator,{style:[E.centering,{transform:[{scale:1.5}]}],size:"large"})}},{platform:'android',title:'Custom size',render:function(){return f.default.createElement(y.ActivityIndicator,{style:[E.centering,{transform:[{scale:1.5}]}],size:"large"})}},{platform:'android',title:'Custom size (size: 75)',render:function(){return f.default.createElement(y.ActivityIndicator,{style:E.centering,size:75})}}];var E=y.StyleSheet.create({centering:{alignItems:'center',justifyContent:'center',padding:8},gray:{backgroundColor:'#cccccc'},horizontal:{flexDirection:'row',justifyContent:'space-around',padding:8}})},354,[355,356,1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){m.exports=function(t){if(t&&t.__esModule)return t;var o={};if(null!=t)for(var n in t)if(Object.prototype.hasOwnProperty.call(t,n)){var c=Object.defineProperty&&Object.getOwnPropertyDescriptor?Object.getOwnPropertyDescriptor(t,n):{};c.get||c.set?Object.defineProperty(o,n,c):o[n]=t[n]}return o.default=t,o}},355,[]);
+__d(function(g,r,i,a,m,e,d){m.exports=function(n){return n&&n.__esModule?n:{default:n}}},356,[]);
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h.createElement(w,{style:A.horizontal},h.createElement(p,{source:r(d[10]),style:A.icon}),h.createElement(p,{source:r(d[11]),style:A.icon}),h.createElement(p,{source:r(d[12]),style:A.icon}),h.createElement(p,{source:r(d[13]),style:A.icon}))}},{title:'Image Loading Events',render:function(){return h.createElement(S,{source:{uri:'http://origami.design/public/images/bird-logo.png?r=1&t='+Date.now()},prefetchedSource:{uri:z}})}},{title:'Error Handler',render:function(){return h.createElement(T,{source:{uri:'https://TYPO_ERROR_facebook.github.io/react/logo-og.png'}})},platform:['ios','macos']},{title:'Image Download Progress',render:function(){return h.createElement(T,{source:{uri:'http://origami.design/public/images/bird-logo.png?r=1'}})},platform:['ios','macos']},{title:'defaultSource',description:'Show a placeholder image when a network image is loading',render:function(){return h.createElement(p,{defaultSource:r(d[14]),source:{uri:'https://facebook.github.io/origami/public/images/birds.jpg'},style:A.base})},platform:['ios','macos']},{title:'Cache Policy',description:"First image has never been loaded before and is instructed not to load unless in cache.Placeholder image from above will stay. 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h.createElement(w,{style:A.horizontal},h.createElement(p,{style:[A.base,{borderRadius:5}],source:k}),h.createElement(p,{style:[A.base,A.leftMargin,{borderRadius:19}],source:k}),h.createElement(p,{style:[A.base,A.leftMargin,{borderTopLeftRadius:20}],source:k}),h.createElement(p,{style:[A.base,A.leftMargin,{borderWidth:10,borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'green'}],source:k}),h.createElement(p,{style:[A.base,A.leftMargin,{borderWidth:5,borderTopLeftRadius:10,borderTopRightRadius:20,borderBottomRightRadius:30,borderBottomLeftRadius:40,borderColor:'red'}],source:k}))}},{title:'Background Color',render:function(){return h.createElement(w,{style:A.horizontal},h.createElement(p,{source:I,style:A.base}),h.createElement(p,{style:[A.base,A.leftMargin,{backgroundColor:'rgba(0, 0, 100, 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+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),h=c.Image,f=c.ListView,w=c.TouchableHighlight,p=c.StyleSheet,y=c.Text,S=c.View,_=(r(d[7]),[r(d[8]),r(d[9]),r(d[10]),r(d[11]),r(d[12]),r(d[13]),r(d[14]),r(d[15]),r(d[16]),r(d[17]),r(d[18]),r(d[19])]),C=(function(c){function p(){var n,l;t(this,p);for(var c=arguments.length,f=new Array(c),C=0;C<c;C++)f[C]=arguments[C];return(l=o(this,(n=s(p)).call.apply(n,[this].concat(f)))).state={dataSource:l.getInitialDataSource()},l._pressData={},l._renderRow=function(t,n,o){var s=Math.abs(v(t)),c=_[s%_.length];return u.createElement(w,{onPress:function(){return l._pressRow(o)},underlayColor:"transparent"},u.createElement(S,null,u.createElement(S,{style:R.row},u.createElement(h,{style:R.thumb,source:c}),u.createElement(y,{style:R.text},t))))},l._pressRow=function(t){l._pressData[t]=!l._pressData[t],l.setState({dataSource:l.state.dataSource.cloneWithRows(l._genRows(l._pressData))})},l}return l(p,c),n(p,[{key:"getInitialDataSource",value:function(){return new f.DataSource({rowHasChanged:function(t,n){return t!==n}}).cloneWithRows(this._genRows({}))}},{key:"UNSAFE_componentWillMount",value:function(){this._pressData={}}},{key:"render",value:function(){return u.createElement(f,{contentContainerStyle:R.list,dataSource:this.state.dataSource,initialListSize:21,pageSize:3,scrollRenderAheadDistance:500,renderRow:this._renderRow})}},{key:"_genRows",value:function(t){for(var n=[],o=0;o<100;o++){var s=t[o]?' (X)':'';n.push('Cell '+o+s)}return n}}]),p})(u.Component);C.title='<ListView> - Grid Layout',C.description='Flexbox grid layout.';var v=function(t){for(var n=15,o=t.length-1;o>=0;o--)n=(n<<5)-n+t.charCodeAt(o);return n},R=p.create({list:{justifyContent:'space-around',flexDirection:'row',flexWrap:'wrap',alignItems:'flex-start'},row:{justifyContent:'center',padding:5,margin:3,width:100,height:100,backgroundColor:'#F6F6F6',alignItems:'center',borderWidth:1,borderRadius:5,borderColor:'#CCC'},thumb:{width:64,height:64},text:{flex:1,marginTop:5,fontWeight:'bold'}});m.exports=C},382,[1,2,3,6,7,125,202,293,361,362,363,364,365,366,367,368,369,370,371,372]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),h=c.Image,y=c.LayoutAnimation,p=c.ListView,f=c.StyleSheet,E=c.Text,b=c.TouchableOpacity,x=c.View,w=r(d[7]).UIManager,C=[r(d[8]),r(d[9]),r(d[10]),r(d[11]),r(d[12]),r(d[13]),r(d[14]),r(d[15]),r(d[16]),r(d[17]),r(d[18]),r(d[19])],S=100,I=10,v=(function(c){function p(){var n,l;t(this,p);for(var u=arguments.length,c=new Array(u),h=0;h<u;h++)c[h]=arguments[h];return(l=o(this,(n=s(p)).call.apply(n,[this].concat(c))))._getThumbIdx=function(){return Math.floor(Math.random()*C.length)},l._onPressThumb=function(){var t=T[l.state.thumbIndex%T.length];y.configureNext(t),l.setState({thumbIndex:l._getThumbIdx(),dir:'row'===l.state.dir?'column':'row'})},l.state={thumbIndex:l._getThumbIdx(),dir:'row'},l}return l(p,c),n(p,[{key:"UNSAFE_componentWillMount",value:function(){w.setLayoutAnimationEnabledExperimental&&w.setLayoutAnimationEnabledExperimental(!0)}},{key:"render",value:function(){return u.createElement(b,{onPress:this._onPressThumb,style:[P.buttonContents,{flexDirection:this.state.dir}]},u.createElement(h,{style:P.img,source:C[this.state.thumbIndex]}),u.createElement(h,{style:P.img,source:C[this.state.thumbIndex]}),u.createElement(h,{style:P.img,source:C[this.state.thumbIndex]}),'column'===this.state.dir?u.createElement(E,null,"Oooo, look at this new text! So awesome it may just be crazy. Let me keep typing here so it wraps at least one line."):u.createElement(E,null))}}]),p})(u.Component),H=(function(c){function h(n){var l;t(this,h),(l=o(this,s(h).call(this,n))).renderRow=function(t,n,o){return u.createElement(v,{text:t})},l.renderSectionHeader=function(t,n){return u.createElement(x,{style:P.section},u.createElement(E,{style:P.text},t))},l.renderHeader=function(){var t=l.state.headerPressCount%2?u.createElement(x,null,u.createElement(E,{style:P.text},"1 Like")):null;return u.createElement(b,{onPress:l._onPressHeader,style:P.header},t,u.createElement(x,null,u.createElement(E,{style:P.text},"Table Header (click me)")))},l.renderFooter=function(){return u.createElement(x,{style:P.header},u.createElement(E,{onPress:function(){return console.log('Footer!')},style:P.text},"Table Footer"))},l._onPressHeader=function(){var t=T[Math.floor(l.state.headerPressCount/2)%T.length];y.configureNext(t),l.setState({headerPressCount:l.state.headerPressCount+1})};for(var c=new p.DataSource({getRowData:function(t,n,o){return t[o]},getSectionHeaderData:function(t,n){return t[n]},rowHasChanged:function(t,n){return t!==n},sectionHeaderHasChanged:function(t,n){return t!==n}}),f={},w=[],C=[],H=0;H<S;H++){var k='Section '+H;w.push(k),f[k]=k,C[H]=[];for(var R=0;R<I;R++){var A='S'+H+', R'+R;C[H].push(A),f[A]=A}}return l.state={dataSource:c.cloneWithRowsAndSections(f,w,C),headerPressCount:0},l}return l(h,c),n(h,[{key:"render",value:function(){return u.createElement(p,{style:P.listview,dataSource:this.state.dataSource,onChangeVisibleRows:function(t,n){return console.log({visibleRows:t,changedRows:n})},renderHeader:this.renderHeader,renderFooter:this.renderFooter,renderSectionHeader:this.renderSectionHeader,renderRow:this.renderRow,initialListSize:10,pageSize:4,scrollRenderAheadDistance:500,stickySectionHeadersEnabled:!0})}}]),h})(u.Component);H.title='<ListView> - Paging',H.description='Floating headers & layout animations.';var P=f.create({listview:{backgroundColor:'#B0C4DE'},header:{height:40,justifyContent:'center',alignItems:'center',backgroundColor:'#3B5998',flexDirection:'row'},text:{color:'white',paddingHorizontal:8},buttonContents:{flexDirection:'row',justifyContent:'center',alignItems:'center',marginHorizontal:5,marginVertical:3,padding:5,backgroundColor:'#EAEAEA',borderRadius:3,paddingVertical:10},img:{width:64,height:64,marginHorizontal:10,backgroundColor:'transparent'},section:{flexDirection:'column',justifyContent:'center',alignItems:'flex-start',padding:6,backgroundColor:'#5890ff'}}),k={layout:{spring:{duration:750,create:{duration:300,type:y.Types.easeInEaseOut,property:y.Properties.opacity},update:{type:y.Types.spring,springDamping:.4}},easeInEaseOut:{duration:300,create:{type:y.Types.easeInEaseOut,property:y.Properties.scaleXY},update:{delay:100,type:y.Types.easeInEaseOut}}}},T=[k.layout.spring,k.layout.easeInEaseOut];m.exports=H},383,[1,2,3,6,7,125,202,38,361,362,363,364,365,366,367,368,369,370,371,372]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),s=r(d[3]),o=r(d[4]),c=r(d[5]),u=r(d[6]),h=u.Modal,p=u.Picker,f=u.Platform,y=u.StyleSheet,S=u.Switch,v=u.Text,E=u.TouchableHighlight,b=u.View,T=p.Item;e.displayName=void 0,e.framework='React',e.title='<Modal>',e.description='Component for presenting modal views.';var w=(function(u){function h(){var n,o;t(this,h);for(var c=arguments.length,u=new Array(c),p=0;p<c;p++)u[p]=arguments[p];return(o=l(this,(n=s(h)).call.apply(n,[this].concat(u)))).state={active:!1},o._onHighlight=function(){o.setState({active:!0})},o._onUnhighlight=function(){o.setState({active:!1})},o}return o(h,u),n(h,[{key:"render",value:function(){var t={color:this.state.active?'#fff':'#000'};return c.createElement(E,{onHideUnderlay:this._onUnhighlight,onPress:this.props.onPress,onShowUnderlay:this._onHighlight,style:[_.button,this.props.style],underlayColor:"#a9d9d4"},c.createElement(v,{style:[_.buttonText,t]},this.props.children))}}]),h})(c.Component),P=[['portrait'],['landscape'],['landscape-left'],['portrait','landscape-right'],['portrait','landscape'],[]],C=(function(u){function y(){var n,o;t(this,y);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(o=l(this,(n=s(y)).call.apply(n,[this].concat(u)))).state={animationType:'none',modalVisible:!1,transparent:!1,presentationStyle:'fullScreen',selectedSupportedOrientation:0,currentOrientation:'unknown'},o._setModalVisible=function(t){o.setState({modalVisible:t})},o._setAnimationType=function(t){o.setState({animationType:t})},o._toggleTransparent=function(){o.setState({transparent:!o.state.transparent})},o}return o(y,u),n(y,[{key:"renderSwitch",value:function(){return f.isTV?null:c.createElement(S,{value:this.state.transparent,onValueChange:this._toggleTransparent})}},{key:"render",value:function(){var t=this,n={backgroundColor:this.state.transparent?'rgba(0, 0, 0, 0.5)':'#f5fcff'},l=this.state.transparent?{backgroundColor:'#fff',padding:20}:null,s={backgroundColor:'#ddd'};return c.createElement(b,null,c.createElement(h,{animationType:this.state.animationType,presentationStyle:this.state.presentationStyle,transparent:this.state.transparent,visible:this.state.modalVisible,onRequestClose:function(){return t._setModalVisible(!1)},supportedOrientations:P[this.state.selectedSupportedOrientation],onOrientationChange:function(n){return t.setState({currentOrientation:n.nativeEvent.orientation})}},c.createElement(b,{style:[_.container,n]},c.createElement(b,{style:[_.innerContainer,l]},c.createElement(v,null,"This modal was presented",' ','none'===this.state.animationType?'without':'with',' ',"animation."),c.createElement(v,null,"It is currently displayed in ",this.state.currentOrientation,' ',"mode."),c.createElement(w,{onPress:this._setModalVisible.bind(this,!1),style:_.modalButton},"Close")))),c.createElement(b,{style:_.row},c.createElement(v,{style:_.rowTitle},"Animation Type"),c.createElement(w,{onPress:this._setAnimationType.bind(this,'none'),style:'none'===this.state.animationType?s:{}},"none"),c.createElement(w,{onPress:this._setAnimationType.bind(this,'slide'),style:'slide'===this.state.animationType?s:{}},"slide"),c.createElement(w,{onPress:this._setAnimationType.bind(this,'fade'),style:'fade'===this.state.animationType?s:{}},"fade")),c.createElement(b,{style:_.row},c.createElement(v,{style:_.rowTitle},"Transparent"),this.renderSwitch()),this.renderPickers(),c.createElement(w,{onPress:this._setModalVisible.bind(this,!0)},"Present"))}},{key:"renderPickers",value:function(){var t=this;return f.isTV?null:c.createElement(b,null,c.createElement(b,null,c.createElement(v,{style:_.rowTitle},"Presentation style"),c.createElement(p,{selectedValue:this.state.presentationStyle,onValueChange:function(n){return t.setState({presentationStyle:n})},itemStyle:_.pickerItem},c.createElement(T,{label:"Full Screen",value:"fullScreen"}),c.createElement(T,{label:"Page Sheet",value:"pageSheet"}),c.createElement(T,{label:"Form Sheet",value:"formSheet"}),c.createElement(T,{label:"Over Full Screen",value:"overFullScreen"}),c.createElement(T,{label:"Default presentationStyle",value:null}))),c.createElement(b,null,c.createElement(v,{style:_.rowTitle},"Supported orientations"),c.createElement(p,{selectedValue:this.state.selectedSupportedOrientation,onValueChange:function(n,l){return t.setState({selectedSupportedOrientation:l})},itemStyle:_.pickerItem},c.createElement(T,{label:"Portrait",value:0}),c.createElement(T,{label:"Landscape",value:1}),c.createElement(T,{label:"Landscape left",value:2}),c.createElement(T,{label:"Portrait and landscape right",value:3}),c.createElement(T,{label:"Portrait and landscape",value:4}),c.createElement(T,{label:"Default supportedOrientations",value:5}))))}}]),y})(c.Component);e.examples=[{title:'Modal Presentation',description:'Modals can be presented with or without animation',render:function(){return c.createElement(C,null)}}];var _=y.create({container:{flex:1,justifyContent:'center',padding:20},innerContainer:{borderRadius:10,alignItems:'center'},row:{alignItems:'center',flex:1,flexDirection:'row',marginBottom:20},rowTitle:{flex:1,fontWeight:'bold'},button:{borderRadius:5,flexGrow:1,height:44,alignSelf:'stretch',justifyContent:'center',overflow:'hidden'},buttonText:{fontSize:18,margin:5,textAlign:'center'},modalButton:{marginTop:10},pickerItem:{fontSize:16}})},384,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),u=r(d[5]),h=r(d[6]),c=r(d[7]),f=r(d[8]),C=f.FlatList,p=f.StyleSheet,x=f.Text,v=f.View,w=f.Alert,I=r(d[9]),y=r(d[10]),_=r(d[11]),b=_.FooterComponent,E=_.HeaderComponent,S=_.ItemComponent,L=_.PlainInput,T=_.SeparatorComponent,V=_.genItemData,H=_.getItemLayout,F=_.pressItem,R=_.renderSmallSwitchOption,P=(function(f){function p(){var o,h;n(this,p);for(var f=arguments.length,C=new Array(f),x=0;x<f;x++)C[x]=arguments[x];return(h=l(this,(o=s(p)).call.apply(o,[this].concat(C)))).state={data:V(1e3),filterText:'',fixedHeight:!0,logViewable:!1,numColumns:2,virtualized:!0},h._onChangeFilterText=function(t){h.setState(function(){return{filterText:t}})},h._onChangeNumColumns=function(t){h.setState(function(){return{numColumns:Number(t)}})},h._renderItemComponent=function(t){var n=t.item;return c.createElement(v,{style:A.card},c.createElement(S,{item:n,fixedHeight:h.state.fixedHeight,onPress:h._pressItem}))},h._onViewableItemsChanged=function(n){h.state.logViewable&&y('onViewableItemsChanged: ',n.changed.map(function(n){return t({},n,{item:'...'})}))},h._pressItem=function(t){F(u(h),t)},h}return h(p,f),o(p,[{key:"render",value:function(){var t=new RegExp(String(this.state.filterText),'i'),n=this.state.data.filter(function(n){return t.test(n.text)||t.test(n.title)});return c.createElement(I,{title:this.props.navigator?null:'<FlatList> - MultiColumn',noSpacer:!0,noScroll:!0},c.createElement(v,{style:A.searchRow},c.createElement(v,{style:A.row},c.createElement(L,{onChangeText:this._onChangeFilterText,placeholder:"Search...",value:this.state.filterText}),c.createElement(x,null," numColumns: "),c.createElement(L,{clearButtonMode:"never",onChangeText:this._onChangeNumColumns,value:this.state.numColumns?String(this.state.numColumns):''})),c.createElement(v,{style:A.row},R(this,'virtualized'),R(this,'fixedHeight'),R(this,'logViewable'))),c.createElement(T,null),c.createElement(C,{ListFooterComponent:b,ListHeaderComponent:E,getItemLayout:this.state.fixedHeight?this._getItemLayout:void 0,data:n,key:this.state.numColumns+(this.state.fixedHeight?'f':'v'),numColumns:this.state.numColumns||1,onRefresh:function(){return w.alert('Alert','onRefresh: nothing to refresh :P')},refreshing:!1,renderItem:this._renderItemComponent,disableVirtualization:!this.state.virtualized,onViewableItemsChanged:this._onViewableItemsChanged}))}},{key:"_getItemLayout",value:function(t,n){var o=H(t,n).length+2*(z+k);return{length:o,offset:o*n,index:n}}}]),p})(c.PureComponent);P.title='<FlatList> - MultiColumn',P.description='Performant, scrollable grid of data.';var z=4,k=1,A=p.create({card:{margin:z,borderRadius:10,flex:1,overflow:'hidden',borderColor:'lightgray',borderWidth:k},row:{flexDirection:'row',alignItems:'center'},searchRow:{padding:10}});m.exports=P},385,[10,1,2,3,6,5,7,125,202,350,36,360]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),n=r(d[2]),c=r(d[3]),o=r(d[4]),s=r(d[5]),u=r(d[6]),h=r(d[7]),k=r(d[8]),E=r(d[9]),b=u.Picker,p=u.Text,v=b.Item,y=(function(u){function h(){var l,o;t(this,h);for(var s=arguments.length,u=new Array(s),k=0;k<s;k++)u[k]=arguments[k];return(o=n(this,(l=c(h)).call.apply(l,[this].concat(u)))).state={selected1:'key1',selected2:'key1',selected3:'key1',color:'red',mode:b.MODE_DIALOG},o.changeMode=function(){var t=o.state.mode===b.MODE_DIALOG?b.MODE_DROPDOWN:b.MODE_DIALOG;o.setState({mode:t})},o.onValueChange=function(t,l){var n={};n[t]=l,o.setState(n)},o}return o(h,u),l(h,[{key:"render",value:function(){return s.createElement(E,{title:"<Picker>"},s.createElement(k,{title:"Basic Picker"},s.createElement(b,{testID:"basic-picker",style:V.picker,selectedValue:this.state.selected1,onValueChange:this.onValueChange.bind(this,'selected1')},s.createElement(v,{label:"hello",value:"key0"}),s.createElement(v,{label:"world",value:"key1"}))),s.createElement(k,{title:"Disabled picker"},s.createElement(b,{style:V.picker,enabled:!1,selectedValue:this.state.selected1},s.createElement(v,{label:"hello",value:"key0"}),s.createElement(v,{label:"world",value:"key1"}))),s.createElement(k,{title:"Dropdown Picker"},s.createElement(b,{style:V.picker,selectedValue:this.state.selected2,onValueChange:this.onValueChange.bind(this,'selected2'),mode:"dropdown"},s.createElement(v,{label:"hello",value:"key0"}),s.createElement(v,{label:"world",value:"key1"}))),s.createElement(k,{title:"Picker with prompt message"},s.createElement(b,{style:V.picker,selectedValue:this.state.selected3,onValueChange:this.onValueChange.bind(this,'selected3'),prompt:"Pick one, just one"},s.createElement(v,{label:"hello",value:"key0"}),s.createElement(v,{label:"world",value:"key1"}))),s.createElement(k,{title:"Picker with no listener"},s.createElement(b,{style:V.picker},s.createElement(v,{label:"hello",value:"key0"}),s.createElement(v,{label:"world",value:"key1"})),s.createElement(p,null,"Cannot change the value of this picker because it doesn't update selectedValue.")),s.createElement(k,{title:"Colorful pickers"},s.createElement(b,{style:[V.picker,{color:'white',backgroundColor:'#333'}],selectedValue:this.state.color,onValueChange:this.onValueChange.bind(this,'color'),mode:"dropdown"},s.createElement(v,{label:"red",color:"red",value:"red"}),s.createElement(v,{label:"green",color:"green",value:"green"}),s.createElement(v,{label:"blue",color:"blue",value:"blue"})),s.createElement(b,{style:V.picker,selectedValue:this.state.color,onValueChange:this.onValueChange.bind(this,'color'),mode:"dialog"},s.createElement(v,{label:"red",color:"red",value:"red"}),s.createElement(v,{label:"green",color:"green",value:"green"}),s.createElement(v,{label:"blue",color:"blue",value:"blue"}))))}}]),h})(s.Component);y.title='<Picker>',y.description='Provides multiple options to choose from, using either a dropdown menu or a dialog.';var V=h.create({picker:{width:100}});m.exports=y},386,[1,2,3,6,7,125,202,140,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),c=r(d[5]),u=r(d[6]),p=r(d[7]),h=r(d[8]),v=r(d[9]),f=(function(h){function v(){var t,o;n(this,v);for(var c=arguments.length,u=new Array(c),p=0;p<c;p++)u[p]=arguments[p];return(o=l(this,(t=s(v)).call.apply(t,[this].concat(u))))._intervalID=null,o.state={progress:0},o}return c(v,h),o(v,[{key:"componentDidMount",value:function(){var t=this;this._intervalID=setInterval(function(){var n=(t.state.progress+.02)%1;t.setState({progress:n})},50)}},{key:"componentWillUnmount",value:function(){null!=this._intervalID&&clearInterval(this._intervalID)}},{key:"render",value:function(){return p.createElement(u,t({progress:this.state.progress},this.props))}}]),v})(p.Component),y=(function(t){function y(){return n(this,y),l(this,s(y).apply(this,arguments))}return c(y,t),o(y,[{key:"render",value:function(){return p.createElement(v,{title:"ProgressBar Examples"},p.createElement(h,{title:"Horizontal Indeterminate ProgressBar"},p.createElement(u,{styleAttr:"Horizontal"})),p.createElement(h,{title:"Horizontal ProgressBar"},p.createElement(f,{styleAttr:"Horizontal",indeterminate:!1})),p.createElement(h,{title:"Horizontal Black Indeterminate ProgressBar"},p.createElement(u,{styleAttr:"Horizontal",color:"black"})),p.createElement(h,{title:"Horizontal Blue ProgressBar"},p.createElement(f,{styleAttr:"Horizontal",indeterminate:!1,color:"blue"})))}}]),y})(p.Component);y.title='<ProgressBarAndroid>',y.description='Horizontal bar to show the progress of some operation.',m.exports=y},387,[41,1,2,3,6,7,205,139,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=r(d[2]),s=r(d[3]),l=r(d[4]),c=r(d[5]),f=r(d[6]),u=f.ScrollView,h=f.StyleSheet,p=f.RefreshControl,w=f.Text,k=f.TouchableWithoutFeedback,y=f.View,C=h.create({row:{borderColor:'grey',borderWidth:1,padding:20,backgroundColor:'#3a5795',margin:5},text:{alignSelf:'center',color:'#fff'},scrollview:{flex:1}}),v=(function(f){function u(){var o,l;t(this,u);for(var c=arguments.length,f=new Array(c),h=0;h<c;h++)f[h]=arguments[h];return(l=n(this,(o=s(u)).call.apply(o,[this].concat(f))))._onClick=function(){l.props.onClick(l.props.data)},l}return l(u,f),o(u,[{key:"render",value:function(){return c.createElement(k,{onPress:this._onClick},c.createElement(y,{style:C.row},c.createElement(w,{style:C.text},this.props.data.text+' ('+this.props.data.clicks+' clicks)')))}}]),u})(c.Component),R=(function(f){function h(){var o,l;t(this,h);for(var c=arguments.length,f=new Array(c),u=0;u<c;u++)f[u]=arguments[u];return(l=n(this,(o=s(h)).call.apply(o,[this].concat(f)))).state={isRefreshing:!1,loaded:0,rowData:Array.from(new Array(20)).map(function(t,o){return{text:'Initial row '+o,clicks:0}})},l._onClick=function(t){t.clicks++,l.setState({rowData:l.state.rowData})},l._onRefresh=function(){l.setState({isRefreshing:!0}),setTimeout(function(){var t=Array.from(new Array(10)).map(function(t,o){return{text:'Loaded row '+(+l.state.loaded+o),clicks:0}}).concat(l.state.rowData);l.setState({loaded:l.state.loaded+10,isRefreshing:!1,rowData:t})},5e3)},l}return l(h,f),o(h,[{key:"render",value:function(){var t=this,o=this.state.rowData.map(function(o,n){return c.createElement(v,{key:n,data:o,onClick:t._onClick})});return c.createElement(u,{style:C.scrollview,refreshControl:c.createElement(p,{refreshing:this.state.isRefreshing,onRefresh:this._onRefresh,tintColor:"#ff0000",title:"Loading...",titleColor:"#00ff00",colors:['#ff0000','#00ff00','#0000ff'],progressBackgroundColor:"#ffff00"})},o)}}]),h})(c.Component);R.title='<RefreshControl>',R.description='Adds pull-to-refresh support to a scrollview.',m.exports=R},388,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),p=r(d[4]),c=r(d[5]),s=r(d[6]),h=s.ScrollView,u=s.StyleSheet,I=s.Text,v=s.TouchableOpacity,y=(function(s){function u(){var n,p;t(this,u);for(var s=arguments.length,h=new Array(s),y=0;y<s;y++)h[y]=arguments[y];return(p=o(this,(n=l(u)).call.apply(n,[this].concat(h)))).makeItems=function(t,n){for(var o=[],l=0;l<t;l++)o[l]=c.createElement(v,{key:l,style:n},c.createElement(I,null,'Item '+l));return o},p}return p(u,s),n(u,[{key:"render",value:function(){var t=this.makeItems(20,W.itemWrapper);return t[4]=c.createElement(h,{key:'scrollView',horizontal:!0},this.makeItems(20,[W.itemWrapper,W.horizontalItemWrapper])),t.push(c.createElement(h,{key:'scrollViewSnap',horizontal:!0,snapToInterval:210,pagingEnabled:!0},this.makeItems(20,[W.itemWrapper,W.horizontalItemWrapper,W.horizontalPagingItemWrapper]))),c.createElement(h,{style:W.verticalScrollView},t)}}]),u})(c.Component);y.title='<ScrollView>',y.description='Component that enables scrolling through child components.';var W=u.create({verticalScrollView:{margin:10},itemWrapper:{backgroundColor:'#dddddd',alignItems:'center',borderRadius:5,borderWidth:5,borderColor:'#a52a2a',padding:30,margin:5},horizontalItemWrapper:{padding:50},horizontalPagingItemWrapper:{width:200}});m.exports=y},389,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),c=r(d[5]),u=r(d[6]),h=r(d[7]),f=r(d[8]),p=r(d[9]),S=p.Alert,E=p.Animated,y=p.Button,I=p.StyleSheet,v=p.Text,T=p.View,C=r(d[10]),w=r(d[11]),x=r(d[12]),k=x.HeaderComponent,b=x.FooterComponent,_=x.ItemComponent,R=x.PlainInput,P=x.SeparatorComponent,L=x.Spindicator,V=x.genItemData,A=x.pressItem,H=x.renderSmallSwitchOption,O=x.renderStackedItem,z={minimumViewTime:3e3,viewAreaCoveragePercentThreshold:100,waitForInteraction:!0},N=function(t){var n=t.section;return f.createElement(T,{style:M.header},f.createElement(v,{style:M.headerText},"SECTION HEADER: ",n.key),f.createElement(P,null))},D=function(t){var n=t.section;return f.createElement(T,{style:M.header},f.createElement(v,{style:M.headerText},"SECTION FOOTER: ",n.key),f.createElement(P,null))},F=function(t){var n=t.highlighted,o=t.text;return f.createElement(T,{style:[M.customSeparator,n&&{backgroundColor:'rgb(217, 217, 217)'}]},f.createElement(v,{style:M.separatorText},o))},B=(function(p){function I(){var t,l;o(this,I);for(var h=arguments.length,p=new Array(h),S=0;S<h;S++)p[S]=arguments[S];return(l=s(this,(t=c(I)).call.apply(t,[this].concat(p)))).state={data:V(1e3),debug:!1,filterText:'',logViewable:!1,virtualized:!0,inverted:!1},l._scrollPos=new E.Value(0),l._scrollSinkY=E.event([{nativeEvent:{contentOffset:{y:l._scrollPos}}}],{useNativeDriver:!0}),l._captureRef=function(t){l._sectionListRef=t},l._renderItemComponent=function(t){var n=t.item,o=t.separators;return f.createElement(_,{item:n,onPress:l._pressItem,onHideUnderlay:o.unhighlight,onShowUnderlay:o.highlight})},l._onViewableItemsChanged=function(t){l.state.logViewable&&w('onViewableItemsChanged: ',t.changed.map(function(t){return n({},t,{item:'...',section:t.section.key})}))},l._pressItem=function(t){!isNaN(t)&&A(u(l),t)},l}return h(I,p),l(I,[{key:"_scrollToLocation",value:function(t,n){this._sectionListRef.getNode().scrollToLocation({sectionIndex:t,itemIndex:n})}},{key:"render",value:function(){for(var n=this,o=new RegExp(String(this.state.filterText),'i'),l=this.state.data.filter(function(t){return o.test(t.text)||o.test(t.title)}),s=[],c=0,u=l.length-1,h=10;h<=u+10;h+=10)s.push({key:l[c].key+" - "+l[Math.min(h-1,u)].key,data:l.slice(c,h)}),c=h;return f.createElement(C,{noSpacer:!0,noScroll:!0},f.createElement(T,{style:M.searchRow},f.createElement(R,{onChangeText:function(t){n.setState(function(){return{filterText:t}})},placeholder:"Search...",value:this.state.filterText}),f.createElement(T,{style:M.optionSection},H(this,'virtualized'),H(this,'logViewable'),H(this,'debug'),H(this,'inverted'),f.createElement(L,{value:this._scrollPos})),f.createElement(T,{style:M.scrollToRow},f.createElement(v,null,"scroll to:"),f.createElement(y,{title:"Item A",onPress:function(){return n._scrollToLocation(2,1)}}),f.createElement(y,{title:"Item B",onPress:function(){return n._scrollToLocation(3,6)}}),f.createElement(y,{title:"Item C",onPress:function(){return n._scrollToLocation(6,3)}}))),f.createElement(P,null),f.createElement(E.SectionList,{ref:this._captureRef,ListHeaderComponent:k,ListFooterComponent:b,SectionSeparatorComponent:function(n){return f.createElement(F,t({},n,{text:"SECTION SEPARATOR"}))},ItemSeparatorComponent:function(n){return f.createElement(F,t({},n,{text:"ITEM SEPARATOR"}))},debug:this.state.debug,inverted:this.state.inverted,enableVirtualization:this.state.virtualized,onRefresh:function(){return S.alert('onRefresh: nothing to refresh :P')},onScroll:this._scrollSinkY,onViewableItemsChanged:this._onViewableItemsChanged,refreshing:!1,renderItem:this._renderItemComponent,renderSectionHeader:N,renderSectionFooter:D,stickySectionHeadersEnabled:!0,sections:[{key:'empty section',data:[]},{renderItem:O,key:'s1',data:[{title:'Item In Header Section',text:'Section s1',key:'header item'}]},{key:'s2',data:[{noImage:!0,title:'1st item',text:'Section s2',key:'noimage0'},{noImage:!0,title:'2nd item',text:'Section s2',key:'noimage1'}]}].concat(s),style:M.list,viewabilityConfig:z}))}}]),I})(f.PureComponent);B.title='<SectionList>',B.description='Performant, scrollable list of data.';var M=I.create({customSeparator:{backgroundColor:'rgb(200, 199, 204)'},header:{backgroundColor:'#e9eaed'},headerText:{padding:4,fontWeight:'600'},list:{backgroundColor:'white'},optionSection:{flexDirection:'row',flexWrap:'wrap',alignItems:'center'},searchRow:{paddingHorizontal:10},scrollToRow:{flexDirection:'row',alignItems:'center',paddingHorizontal:8},separatorText:{color:'gray',alignSelf:'center',fontSize:7}});m.exports=B},390,[41,10,1,2,3,6,5,7,125,202,350,36,360]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),u=r(d[3]),o=r(d[4]),c=r(d[5]),s=r(d[6]),p=r(d[7]),f=p.Slider,C=p.Text,h=p.StyleSheet,v=p.View,E=(function(p){function h(){var t,l;n(this,h);for(var c=arguments.length,s=new Array(c),p=0;p<c;p++)s[p]=arguments[p];return(l=u(this,(t=o(h)).call.apply(t,[this].concat(s)))).state={value:l.props.value},l}return c(h,p),l(h,[{key:"render",value:function(){var n=this;return s.createElement(v,null,s.createElement(C,{style:S.text},this.state.value&&+this.state.value.toFixed(3)),s.createElement(f,t({},this.props,{onValueChange:function(t){return n.setState({value:t})}})))}}]),h})(s.Component);E.defaultProps={value:0};var x=(function(p){function f(){var t,l;n(this,f);for(var c=arguments.length,s=new Array(c),p=0;p<c;p++)s[p]=arguments[p];return(l=u(this,(t=o(f)).call.apply(t,[this].concat(s)))).state={slideCompletionValue:0,slideCompletionCount:0},l}return c(f,p),l(f,[{key:"render",value:function(){var n=this;return s.createElement(v,null,s.createElement(E,t({},this.props,{onSlidingComplete:function(t){return n.setState({slideCompletionValue:t,slideCompletionCount:n.state.slideCompletionCount+1})}})),s.createElement(C,null,"Completions: ",this.state.slideCompletionCount," Value:",' ',this.state.slideCompletionValue))}}]),f})(s.Component),S=h.create({text:{fontSize:14,textAlign:'center',fontWeight:'500',margin:10}});e.title='<Slider>',e.displayName='SliderExample',e.description='Slider input for numeric values',e.examples=[{title:'Default settings',render:function(){return s.createElement(E,null)}},{title:'Initial value: 0.5',render:function(){return s.createElement(E,{value:.5})}},{title:'minimumValue: -1, maximumValue: 2',render:function(){return s.createElement(E,{minimumValue:-1,maximumValue:2})}},{title:'step: 0.25',render:function(){return s.createElement(E,{step:.25})}},{title:'onSlidingComplete',render:function(){return s.createElement(x,null)}},{title:'Custom min/max track tint color',render:function(){return s.createElement(E,{minimumTrackTintColor:'blue',maximumTrackTintColor:'red',value:.5})}},{title:'Custom thumb color',platform:'android',render:function(){return s.createElement(E,{thumbTintColor:'blue'})}},{title:'Custom thumb image',platform:['ios','macos'],render:function(){return s.createElement(E,{thumbImage:r(d[8])})}},{title:'Custom track image',platform:['ios','macos'],render:function(){return s.createElement(E,{trackImage:r(d[9])})}},{title:'Custom min/max track image',platform:['ios','macos'],render:function(){return s.createElement(E,{minimumTrackImage:r(d[10]),maximumTrackImage:r(d[11])})}}]},391,[41,1,2,3,6,7,125,202,392,393,394,395]);
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+__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",width:18,height:18,scales:[1,2],hash:"5ae382059ed033dc4820b9935e6b4174",name:"slider",type:"png"})},393,[169]);
+__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",width:9,height:18,scales:[1,2],hash:"d8276afd6d241b955f3b46226dc4a656",name:"slider-left",type:"png"})},394,[169]);
+__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",width:9,height:18,scales:[1,2],hash:"bef3b128105b7f89ef4620be192c3dba",name:"slider-right",type:"png"})},395,[169]);
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o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(h,{hidden:this.state.hidden,showHideTransition:this.state.showHideTransition,animated:this.state.animated}),c.createElement(E,{style:x.wrapper,onPress:this._onChangeHidden},c.createElement(p,{style:x.button},c.createElement(y,null,"hidden: ",this.state.hidden?'true':'false'))),c.createElement(E,{style:x.wrapper,onPress:this._onChangeAnimated},c.createElement(p,{style:x.button},c.createElement(y,null,"animated (ios only): ",this.state.animated?'true':'false'))),c.createElement(E,{style:x.wrapper,onPress:this._onChangeTransition},c.createElement(p,{style:x.button},c.createElement(y,null,"showHideTransition (ios only): '",v(k,this._showHideTransitionIndex),"'"))),c.createElement(V,null))}}]),f})(c.Component),_=(function(u){function f(){var n,o;t(this,f);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(o=l(this,(n=s(f)).call.apply(n,[this].concat(u))))._barStyleIndex=0,o._onChangeBarStyle=function(){o._barStyleIndex++,o.setState({barStyle:v(C,o._barStyleIndex)})},o._onChangeAnimated=function(){o.setState({animated:!o.state.animated})},o.state={animated:!0,barStyle:v(C,o._barStyleIndex)},o}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(h,{animated:this.state.animated,barStyle:this.state.barStyle}),c.createElement(E,{style:x.wrapper,onPress:this._onChangeBarStyle},c.createElement(p,{style:x.button},c.createElement(y,null,"style: '",v(C,this._barStyleIndex),"'"))),c.createElement(E,{style:x.wrapper,onPress:this._onChangeAnimated},c.createElement(p,{style:x.button},c.createElement(y,null,"animated: ",this.state.animated?'true':'false'))))}}]),f})(c.Component),B=(function(u){function f(){var n,o;t(this,f);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(o=l(this,(n=s(f)).call.apply(n,[this].concat(u)))).state={networkActivityIndicatorVisible:!1},o._onChangeNetworkIndicatorVisible=function(){o.setState({networkActivityIndicatorVisible:!o.state.networkActivityIndicatorVisible})},o}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(h,{networkActivityIndicatorVisible:this.state.networkActivityIndicatorVisible}),c.createElement(E,{style:x.wrapper,onPress:this._onChangeNetworkIndicatorVisible},c.createElement(p,{style:x.button},c.createElement(y,null,"networkActivityIndicatorVisible:",this.state.networkActivityIndicatorVisible?'true':'false'))))}}]),f})(c.Component),I=(function(u){function f(){var n,o;t(this,f);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(o=l(this,(n=s(f)).call.apply(n,[this].concat(u)))).state={animated:!0,backgroundColor:v(w,0)},o._colorIndex=0,o._onChangeBackgroundColor=function(){o._colorIndex++,o.setState({backgroundColor:v(w,o._colorIndex)})},o._onChangeAnimated=function(){o.setState({animated:!o.state.animated})},o}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(h,{backgroundColor:this.state.backgroundColor,animated:this.state.animated}),c.createElement(E,{style:x.wrapper,onPress:this._onChangeBackgroundColor},c.createElement(p,{style:x.button},c.createElement(y,null,"backgroundColor: '",v(w,this._colorIndex),"'"))),c.createElement(E,{style:x.wrapper,onPress:this._onChangeAnimated},c.createElement(p,{style:x.button},c.createElement(y,null,"animated: ",this.state.animated?'true':'false'))))}}]),f})(c.Component),A=(function(u){function f(){var n,o;t(this,f);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(o=l(this,(n=s(f)).call.apply(n,[this].concat(u)))).state={translucent:!1},o._onChangeTranslucent=function(){o.setState({translucent:!o.state.translucent})},o}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(h,{translucent:this.state.translucent}),c.createElement(E,{style:x.wrapper,onPress:this._onChangeTranslucent},c.createElement(p,{style:x.button},c.createElement(y,null,"translucent: ",this.state.translucent?'true':'false'))))}}]),f})(c.Component),P=(function(u){function f(){return t(this,f),l(this,s(f).apply(this,arguments))}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(E,{style:x.wrapper,onPress:function(){h.setHidden(!0,'slide')}},c.createElement(p,{style:x.button},c.createElement(y,null,"setHidden(true, 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f(){return t(this,f),l(this,s(f).apply(this,arguments))}return o(f,u),n(f,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(E,{style:x.wrapper,onPress:function(){h.setHidden(!0)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setHidden(true)"))),c.createElement(E,{style:x.wrapper,onPress:function(){h.setHidden(!1)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setHidden(false)"))),c.createElement(E,{style:x.wrapper,onPress:function(){h.setBackgroundColor('#ff00ff',!0)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setBackgroundColor('#ff00ff', true)"))),c.createElement(E,{style:x.wrapper,onPress:function(){h.setBackgroundColor('#00ff00',!0)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setBackgroundColor('#00ff00', true)"))),c.createElement(E,{style:x.wrapper,onPress:function(){h.setTranslucent(!0),h.setBackgroundColor('rgba(0, 0, 0, 0.4)',!0)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setTranslucent(true) and setBackgroundColor('rgba(0, 0, 0, 0.4)', true)"))),c.createElement(E,{style:x.wrapper,onPress:function(){h.setTranslucent(!1),h.setBackgroundColor('black',!0)}},c.createElement(p,{style:x.button},c.createElement(y,null,"setTranslucent(false) and setBackgroundColor('black', true)"))))}}]),f})(c.Component),V=(function(u){function h(){var n,o;t(this,h);for(var c=arguments.length,u=new Array(c),f=0;f<c;f++)u[f]=arguments[f];return(o=l(this,(n=s(h)).call.apply(n,[this].concat(u)))).state={modalVisible:!1},o._onChangeModalVisible=function(){o.setState({modalVisible:!o.state.modalVisible})},o}return o(h,u),n(h,[{key:"render",value:function(){return c.createElement(p,null,c.createElement(E,{style:x.wrapper,onPress:this._onChangeModalVisible},c.createElement(p,{style:x.button},c.createElement(y,null,"modal visible: 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c.createElement(P,null)},platform:'ios'},{title:'StatusBar static API',render:function(){return c.createElement(H,null)},platform:'android'},{title:'StatusBar dimensions',render:function(){return c.createElement(p,null,c.createElement(y,null,"Height (Android only): ",h.currentHeight," pts"))},platform:'android'}];e.examples=T;var x=f.create({container:{flex:1,justifyContent:'center',padding:20,backgroundColor:'#f5fcff'},innerContainer:{borderRadius:10,alignItems:'center'},wrapper:{borderRadius:5,marginBottom:5},button:{borderRadius:5,backgroundColor:'#eeeeee',padding:10},modalButton:{marginTop:10}})},396,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),c=r(d[3]),l=r(d[4]),s=r(d[5]),u=r(d[6]),h=u.Image,w=u.SwipeableFlatList,y=u.TouchableHighlight,f=u.StyleSheet,p=u.Text,k=u.View,x=u.Alert,b=r(d[7]),E=[{key:'like',icon:r(d[8]),data:'Like!'},{key:'heart',icon:r(d[9]),data:'Heart!'},{key:'party',icon:r(d[10]),data:'Party!'}],v=(function(u){function f(){return t(this,f),o(this,c(f).apply(this,arguments))}return l(f,u),n(f,[{key:"render",value:function(){return s.createElement(b,{title:this.props.navigator?null:'<SwipeableListView>',noSpacer:!0,noScroll:!0},s.createElement(w,{data:E,bounceFirstRowOnMount:!0,maxSwipeDistance:160,renderItem:this._renderItem.bind(this),renderQuickActions:this._renderQuickActions.bind(this)}))}},{key:"_renderItem",value:function(t){var n=t.item;return s.createElement(k,{style:D.row},s.createElement(h,{style:D.rowIcon,source:n.icon}),s.createElement(k,{style:D.rowData},s.createElement(p,{style:D.rowDataText},n.data)))}},{key:"_renderQuickActions",value:function(t){t.item;return s.createElement(k,{style:D.actionsContainer},s.createElement(y,{style:D.actionButton,onPress:function(){x.alert('Tips','You could do something with this edit action!')}},s.createElement(p,{style:D.actionButtonText},"Edit")),s.createElement(y,{style:[D.actionButton,D.actionButtonDestructive],onPress:function(){x.alert('Tips','You could do something with this remove action!')}},s.createElement(p,{style:D.actionButtonText},"Remove")))}}]),f})(s.Component);v.title='<SwipeableFlatList>',v.description='Performant, scrollable, swipeable list of data.';var D=f.create({row:{flexDirection:'row',justifyContent:'center',alignItems:'center',padding:10,backgroundColor:'#F6F6F6'},rowIcon:{width:64,height:64,marginRight:20},rowData:{flex:1},rowDataText:{fontSize:24},actionsContainer:{flex:1,flexDirection:'row',justifyContent:'flex-end',alignItems:'center'},actionButton:{padding:10,width:80,backgroundColor:'#999999'},actionButtonDestructive:{backgroundColor:'#FF0000'},actionButtonText:{textAlign:'center'}});m.exports=v},397,[1,2,3,6,7,125,202,350,361,367,369]);
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console.log('1st')}},"(Serif",s.createElement(y,{style:{fontStyle:'italic',fontWeight:'bold'},onPress:function(){return console.log('2nd')}},"(Serif Bold Italic",s.createElement(y,{style:{fontFamily:'monospace',fontStyle:'normal',fontWeight:'normal'},onPress:function(){return console.log('3rd')}},"(Monospace Normal",s.createElement(y,{style:{fontFamily:'sans-serif',fontWeight:'bold'},onPress:function(){return console.log('4th')}},"(Sans-Serif Bold",s.createElement(y,{style:{fontWeight:'normal'},onPress:function(){return console.log('5th')}},"(and Sans-Serif Normal)"),")"),")"),")"),")"),s.createElement(y,{style:{fontSize:12}},s.createElement(x,null,"Entity Name"))),s.createElement(b,{title:"Text Align"},s.createElement(y,null,"auto (default) - english LTR"),s.createElement(y,null,"\u0623\u062d\u0628 \u0627\u0644\u0644\u063a\u0629 \u0627\u0644\u0639\u0631\u0628\u064a\u0629 auto (default) - arabic RTL"),s.createElement(y,{style:{textAlign:'left'}},"left left left left left left left left 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right")),s.createElement(b,{title:"Unicode"},s.createElement(h,null,s.createElement(h,{style:{flexDirection:'row'}},s.createElement(y,{style:{backgroundColor:'red'}},"\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002")),s.createElement(h,null,s.createElement(y,{style:{backgroundColor:'red'}},"\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002")),s.createElement(h,{style:{alignItems:'center'}},s.createElement(y,{style:{backgroundColor:'red'}},"\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002")),s.createElement(h,null,s.createElement(y,{style:{backgroundColor:'red'}},"\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002\u661f\u9645\u4e89\u9738\u662f\u4e16\u754c\u4e0a\u6700\u597d\u7684\u6e38\u620f\u3002")))),s.createElement(b,{title:"Spaces"},s.createElement(y,null,"A ",'generated'," ",'string'," and some \xa0\xa0\xa0 spaces")),s.createElement(b,{title:"Line Height"},s.createElement(y,{style:{lineHeight:35}},"Holisticly formulate inexpensive ideas before best-of-breed benefits. ",s.createElement(y,{style:{fontSize:20}},"Continually")," expedite magnetic potentialities rather than client-focused interfaces.")),s.createElement(b,{title:"Letter Spacing"},s.createElement(h,null,s.createElement(y,{style:{letterSpacing:0}},"letterSpacing = 0"),s.createElement(y,{style:{letterSpacing:2,marginTop:5}},"letterSpacing = 2"),s.createElement(y,{style:{letterSpacing:9,marginTop:5}},"letterSpacing = 9"),s.createElement(h,{style:{flexDirection:'row'}},s.createElement(y,{style:{fontSize:12,letterSpacing:2,backgroundColor:'fuchsia',marginTop:5}},"With size and background color")),s.createElement(y,{style:{letterSpacing:-1,marginTop:5}},"letterSpacing = -1"),s.createElement(y,{style:{letterSpacing:3,backgroundColor:'#dddddd',marginTop:5}},"[letterSpacing = 3]",s.createElement(y,{style:{letterSpacing:0,backgroundColor:'#bbbbbb'}},"[Nested letterSpacing = 0]"),s.createElement(y,{style:{letterSpacing:6,backgroundColor:'#eeeeee'}},"[Nested letterSpacing = 6]")))),s.createElement(b,{title:"Empty Text"},s.createElement(y,null)),s.createElement(b,{title:"Toggling Attributes"},s.createElement(w,null)),s.createElement(b,{title:"backgroundColor attribute"},s.createElement(y,{style:{backgroundColor:'#ffaaaa'}},"Red background,",s.createElement(y,{style:{backgroundColor:'#aaaaff'}},' ',"blue background,",s.createElement(y,null,' ',"inherited blue background,",s.createElement(y,{style:{backgroundColor:'#aaffaa'}},' ',"nested green background.")))),s.createElement(y,{style:{backgroundColor:'rgba(100, 100, 100, 0.3)'}},"Same alpha as background,",s.createElement(y,null,"Inherited alpha from background,",s.createElement(y,{style:{backgroundColor:'rgba(100, 100, 100, 0.3)'}},"Reapply alpha")))),s.createElement(b,{title:"containerBackgroundColor attribute"},s.createElement(h,{style:{flexDirection:'row',height:85}},s.createElement(h,{style:{backgroundColor:'#ffaaaa',width:150}}),s.createElement(h,{style:{backgroundColor:'#aaaaff',width:150}})),s.createElement(y,{style:[k.backgroundColorText,{top:-80}]},"Default containerBackgroundColor (inherited) + backgroundColor wash"),s.createElement(y,{style:[k.backgroundColorText,{top:-70,backgroundColor:'transparent'}]},"containerBackgroundColor: 'transparent' + backgroundColor wash")),s.createElement(b,{title:"numberOfLines attribute"},s.createElement(y,{numberOfLines:1},"Maximum of one line no matter now much I write here. 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Neat, huh?")),s.createElement(b,{title:"Text shadow"},s.createElement(y,{style:{fontSize:20,textShadowOffset:{width:2,height:2},textShadowRadius:1,textShadowColor:'#00cccc'}},"Demo text shadow")),s.createElement(b,{title:"Ellipsize mode"},s.createElement(y,{numberOfLines:1},"This very long text should be truncated with dots in the end."),s.createElement(y,{ellipsizeMode:"middle",numberOfLines:1},"This very long text should be truncated with dots in the middle."),s.createElement(y,{ellipsizeMode:"head",numberOfLines:1},"This very long text should be truncated with dots in the beginning."),s.createElement(y,{ellipsizeMode:"clip",numberOfLines:1},"This very long text should be clipped and this will not be visible.")),s.createElement(b,{title:"Include Font Padding"},s.createElement(h,{style:{flexDirection:'row',justifyContent:'space-around',marginBottom:10}},s.createElement(h,{style:{alignItems:'center'}},s.createElement(y,{style:k.includeFontPaddingText},"Ey"),s.createElement(y,null,"Default")),s.createElement(h,{style:{alignItems:'center'}},s.createElement(y,{style:[k.includeFontPaddingText,{includeFontPadding:!1,marginLeft:10}]},"Ey"),s.createElement(y,null,"includeFontPadding: false"))),s.createElement(y,null,"By default Android will put extra space above text to allow for upper-case accents or other ascenders. 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+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),h=r(d[5]),u=r(d[6]),c=u.Picker,p=u.Text,f=u.View,b=(function(u){function b(){var n,s;t(this,b);for(var h=arguments.length,u=new Array(h),c=0;c<h;c++)u[c]=arguments[c];return(s=o(this,(n=l(b)).call.apply(n,[this].concat(u)))).state={textMetrics:[],language:'english',alignment:'left',fontSize:50},s}return s(b,u),n(b,[{key:"render",value:function(){var t=this,n={arabic:'\u0635\u0650\u0641 \u062e\u064e\u0644\u0642\u064e \u062e\u064e\u0648\u062f\u0650 \u0643\u064e\u0645\u0650\u062b\u0644\u0650 \u0627\u0644\u0634\u064e\u0645\u0633\u0650 \u0625\u0650\u0630 \u0628\u064e\u0632\u064e\u063a\u064e\u062a \u2014 \u064a\u064e\u062d\u0638\u0649 \u0627\u0644\u0636\u064e\u062c\u064a\u0639\u064f \u0628\u0650\u0647\u0627 \u0646\u064e\u062c\u0644\u0627\u0621\u064e \u0645\u0650\u0639\u0637\u0627\u0631\u0650',chinese:'Innovation in China \u4e2d\u56fd\u667a\u9020\uff0c\u6167\u53ca\u5168\u7403 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c.createElement(_,{testID:"touchable_feedback_mouse_events"},c.createElement(_,{style:[A.row,{justifyContent:'center'}]},c.createElement(y,{style:A.wrapper,testID:"touchable_feedback_mouse_events_button",accessibilityLabel:"touchable feedback mouse events",accessibilityTraits:"button",accessibilityComponentType:"button",onPressIn:function(n){return t._appendEvent('MouseIn',n.nativeEvent)},onPressOut:function(n){return t._appendEvent('MouseOut',n.nativeEvent)}},c.createElement(f,{style:A.button},"Click Me"))),c.createElement(_,{testID:"touchable_feedback_mouse_events_console",style:A.eventLogBox},this.state.eventLog.map(function(t,n){return c.createElement(f,{key:n},t)})))}}]),h})(c.Component),W={uri:'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small'},A=p.create({row:{justifyContent:'center',flexDirection:'row'},centered:{justifyContent:'center'},image:{width:50,height:50},text:{fontSize:16},block:{padding:10},button:{color:'#007AFF'},disabledButton:{color:'#007AFF',opacity:.5},nativeFeedbackButton:{textAlign:'center',margin:10},hitSlopButton:{color:'white'},wrapper:{borderRadius:8},wrapperCustom:{borderRadius:8,padding:6},hitSlopWrapper:{backgroundColor:'red',marginVertical:30},logBox:{padding:20,margin:10,borderWidth:p.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9'},eventLogBox:{padding:10,margin:10,height:120,borderWidth:p.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9'},forceTouchBox:{padding:10,margin:10,borderWidth:p.hairlineWidth,borderColor:'#f0f0f0',backgroundColor:'#f9f9f9',alignItems:'center'},textBlock:{fontWeight:'500',color:'blue'}})},406,[1,2,3,6,7,125,202,38]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),s=r(d[4]),c=r(d[5]),u=r(d[6]),h=u.Button,y=u.StyleSheet,f=u.Text,E=u.View,p=r(d[7]),w=r(d[8]);!(function(u){function p(){var n,s;t(this,p);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(s=l(this,(n=o(p)).call.apply(n,[this].concat(u)))).state={showSampleViews:!1,showTextView:!1},s}s(p,u),n(p,[{key:"render",value:function(){var t=this,n=y.create({focusView:{backgroundColor:'#527FE4',borderColor:'#000033',borderWidth:1}});return c.createElement(E,null,c.createElement(h,{onPress:function(){return t.setState({showSampleViews:!t.state.showSampleViews})},title:this.state.showSampleViews?'Hide Sample Focus event View':'Show Sample View'}),c.createElement(h,{onPress:function(){return t.defaultFocusView?t.defaultFocusView.focus():null},title:'Give Focus to default View'}),this.state.showSampleViews?c.createElement(E,null,c.createElement(f,null," Enter on any view will move focus within this view "),c.createElement(w,{onPress:function(){return t.defaultFocusView?t.defaultFocusView.focus():null}},c.createElement(E,{ref:function(n){return t.view1=n},style:[n.focusView]},c.createElement(f,null," Test View"))),c.createElement(w,{onPress:function(){return t.view2?t.view2.focus():null}},c.createElement(E,{ref:function(n){return t.defaultFocusView=n},style:[n.focusView]},c.createElement(f,null," Default Focus View "))),c.createElement(w,{onPress:function(){return t.view1?t.view1.focus():null}},c.createElement(E,{ref:function(n){return t.view2=n},style:[n.focusView],onFocusChange:function(n){t.setState({showTextView:n})}},c.createElement(f,null," Show sample textview on focus "))),this.state.showTextView?c.createElement(f,null," This is a sample Text"):null):null)}}])})(c.Component);e.title='<View>',e.description="Basic building block of all UI, examples that demonstrate some of the many styles available.",e.displayName='ViewExample',e.examples=[{title:'Background Color',render:function(){return c.createElement(E,{style:{backgroundColor:'#527FE4',padding:5}},c.createElement(f,{style:{fontSize:11}},"Blue background"))}},{title:'Border',render:function(){return c.createElement(E,{style:{borderColor:'#527FE4',borderWidth:5,padding:10}},c.createElement(f,{style:{fontSize:11}},"5px blue border"))}},{title:'Padding/Margin',render:function(){var t=y.create({box:{backgroundColor:'#527FE4',borderColor:'#000033',borderWidth:1}});return c.createElement(E,{style:{borderColor:'#bb0000',borderWidth:.5}},c.createElement(E,{style:[t.box,{padding:5}]},c.createElement(f,{style:{fontSize:11}},"5px padding")),c.createElement(E,{style:[t.box,{margin:5}]},c.createElement(f,{style:{fontSize:11}},"5px margin")),c.createElement(E,{style:[t.box,{margin:5,padding:5,alignSelf:'flex-start'}]},c.createElement(f,{style:{fontSize:11}},"5px margin and padding,"),c.createElement(f,{style:{fontSize:11}},"widthAutonomous=true")))}},{title:'Border Radius',render:function(){return c.createElement(E,{style:{borderWidth:.5,borderRadius:5,padding:5}},c.createElement(f,{style:{fontSize:11}},"Too much use of `borderRadius` (especially large radii) on anything which is scrolling may result in dropped frames. Use sparingly."))}},{title:'Border Style',render:function(){var u=(function(u){function h(){var n,s;t(this,h);for(var c=arguments.length,u=new Array(c),y=0;y<c;y++)u[y]=arguments[y];return(s=l(this,(n=o(h)).call.apply(n,[this].concat(u)))).state={showBorder:!0},s._handlePress=function(){s.setState({showBorder:!s.state.showBorder})},s}return s(h,u),n(h,[{key:"render",value:function(){return c.createElement(p,{onPress:this._handlePress},c.createElement(E,null,c.createElement(E,{style:[{borderWidth:1,padding:5},this.state.showBorder?{borderStyle:'dashed'}:null]},c.createElement(f,{style:{fontSize:11}},"Dashed border style")),c.createElement(E,{style:[{marginTop:5,borderWidth:1,borderRadius:5,padding:5},this.state.showBorder?{borderStyle:'dotted'}:null]},c.createElement(f,{style:{fontSize:11}},"Dotted border style"))))}}]),h})(c.Component);return c.createElement(u,null)}},{title:'Circle with Border Radius',render:function(){return c.createElement(E,{style:{borderRadius:10,borderWidth:1,width:20,height:20}})}},{title:'Overflow',render:function(){var t=y.create({container:{borderWidth:y.hairlineWidth,height:12,marginBottom:8,marginEnd:16,width:95},content:{height:20,width:200}});return c.createElement(E,{style:{flexDirection:'row'}},c.createElement(E,{style:t.container},c.createElement(E,{style:[y.absoluteFill]},c.createElement(f,{style:t.content},"undefined"))),c.createElement(E,{style:t.container},c.createElement(E,{style:[y.absoluteFill,{overflow:'hidden'}]},c.createElement(f,{style:t.content},"hidden"))),c.createElement(E,{style:t.container},c.createElement(E,{style:[y.absoluteFill,{overflow:'visible'}]},c.createElement(f,{style:t.content},"visible"))))}},{title:'Opacity',render:function(){return c.createElement(E,null,c.createElement(E,{style:{opacity:0}},c.createElement(f,null,"Opacity 0")),c.createElement(E,{style:{opacity:.1}},c.createElement(f,null,"Opacity 0.1")),c.createElement(E,{style:{opacity:.3}},c.createElement(f,null,"Opacity 0.3")),c.createElement(E,{style:{opacity:.5}},c.createElement(f,null,"Opacity 0.5")),c.createElement(E,{style:{opacity:.7}},c.createElement(f,null,"Opacity 0.7")),c.createElement(E,{style:{opacity:.9}},c.createElement(f,null,"Opacity 0.9")),c.createElement(E,{style:{opacity:1}},c.createElement(f,null,"Opacity 1")))}},{title:'ToolTip',render:function(){return c.createElement(E,{tooltip:"Parent View"},c.createElement(f,{style:{fontSize:11}},"This Parent View has tooltip \"Parent View\""),c.createElement(E,{tooltip:"Child View 1"},c.createElement(f,{style:{fontSize:11}},"This view has tooltip \"Child View 1\"")),c.createElement(E,{tooltip:"Child View 2"},c.createElement(f,{style:{fontSize:11}},"This view has tooltip \"Child View 2\"")))}},{title:'ZIndex',render:function(){var u=y.create({zIndex:{justifyContent:'space-around',width:100,height:50,marginTop:-10}}),h=(function(h){function y(){var n,s;t(this,y);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(s=l(this,(n=o(y)).call.apply(n,[this].concat(u)))).state={flipped:!1},s._handlePress=function(){s.setState({flipped:!s.state.flipped})},s}return s(y,h),n(y,[{key:"render",value:function(){var t=this.state.flipped?[-1,0,1,2]:[2,1,0,-1];return c.createElement(p,{onPress:this._handlePress},c.createElement(E,null,c.createElement(f,{style:{paddingBottom:10}},"Tap to flip sorting order"),c.createElement(E,{style:[u.zIndex,{marginTop:0,backgroundColor:'#E57373',zIndex:t[0]}]},c.createElement(f,null,"ZIndex ",t[0])),c.createElement(E,{style:[u.zIndex,{marginLeft:50,backgroundColor:'#FFF176',zIndex:t[1]}]},c.createElement(f,null,"ZIndex ",t[1])),c.createElement(E,{style:[u.zIndex,{marginLeft:100,backgroundColor:'#81C784',zIndex:t[2]}]},c.createElement(f,null,"ZIndex ",t[2])),c.createElement(E,{style:[u.zIndex,{marginLeft:150,backgroundColor:'#64B5F6',zIndex:t[3]}]},c.createElement(f,null,"ZIndex ",t[3]))))}}]),y})(c.Component);return c.createElement(h,null)}},{title:'BackfaceVisibility',render:function(){return c.createElement(c.Fragment,null,c.createElement(f,{style:{paddingBottom:10}},"View #1, front is visible, back is hidden."),c.createElement(E,{style:{justifyContent:'center',alignItems:'center'}},c.createElement(E,{style:{height:200,width:200,justifyContent:'center',alignItems:'center',backgroundColor:'blue',backfaceVisibility:'hidden'}},c.createElement(f,null,"Front")),c.createElement(E,{style:{height:200,width:200,justifyContent:'center',alignItems:'center',backgroundColor:'red',backfaceVisibility:'hidden',transform:[{rotateY:'180deg'}],position:'absolute',top:0}},c.createElement(f,null,"Back (You should not see this)"))),c.createElement(f,{style:{paddingVertical:10}},"View #2, front is hidden, back is visible."),c.createElement(E,{style:{justifyContent:'center',alignItems:'center'}},c.createElement(E,{style:{height:200,width:200,justifyContent:'center',alignItems:'center',backgroundColor:'blue',backfaceVisibility:'hidden'}},c.createElement(f,null,"Front (You should not see this)")),c.createElement(E,{style:{height:200,width:200,justifyContent:'center',alignItems:'center',backgroundColor:'red',backfaceVisibility:'hidden',position:'absolute',top:0}},c.createElement(f,null,"Back"))))}}]},407,[1,2,3,6,7,125,202,218,225]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),c=r(d[5]),u=r(d[6]),p=u.Image,h=u.StyleSheet,b=u.Text,f=u.TouchableWithoutFeedback,E=u.TouchableOpacity,v=u.View,y=u.ViewPagerAndroid,P=['#fdc08e','#fff6b9','#99d1b7','#dde5fe','#f79273'],S=['https://apod.nasa.gov/apod/image/1410/20141008tleBaldridge001h990.jpg','https://apod.nasa.gov/apod/image/1409/volcanicpillar_vetter_960.jpg','https://apod.nasa.gov/apod/image/1409/m27_snyder_960.jpg','https://apod.nasa.gov/apod/image/1409/PupAmulti_rot0.jpg','https://apod.nasa.gov/apod/image/1510/lunareclipse_27Sep_beletskycrop4.jpg'],k=(function(u){function p(){var n,s;t(this,p);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(s=o(this,(n=l(p)).call.apply(n,[this].concat(u)))).state={likes:7},s.onClick=function(){s.setState({likes:s.state.likes+1})},s}return s(p,u),n(p,[{key:"render",value:function(){return c.createElement(v,{style:T.likeContainer},c.createElement(E,{onPress:this.onClick,style:T.likeButton},c.createElement(b,{style:T.likesText},"\ud83d\udc4d Like")),c.createElement(b,{style:T.likesText},this.state.likes+' likes'))}}]),p})(c.Component),x=(function(u){function p(){var n,s;t(this,p);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(s=o(this,(n=l(p)).call.apply(n,[this].concat(u))))._handlePress=function(){s.props.enabled&&s.props.onPress&&s.props.onPress()},s}return s(p,u),n(p,[{key:"render",value:function(){return c.createElement(f,{onPress:this._handlePress},c.createElement(v,{style:[T.button,this.props.enabled?{}:T.buttonDisabled]},c.createElement(b,{style:T.buttonText},this.props.text)))}}]),p})(c.Component),C=(function(u){function p(){return t(this,p),o(this,l(p).apply(this,arguments))}return s(p,u),n(p,[{key:"render",value:function(){var t=(this.props.progress.position+this.props.progress.offset)/4*this.props.size;return c.createElement(v,{style:[T.progressBarContainer,{width:this.props.size}]},c.createElement(v,{style:[T.progressBar,{width:t}]}))}}]),p})(c.Component),w=(function(u){function h(){var n,s;t(this,h);for(var c=arguments.length,u=new Array(c),p=0;p<c;p++)u[p]=arguments[p];return(s=o(this,(n=l(h)).call.apply(n,[this].concat(u)))).state={page:0,animationsAreEnabled:!0,scrollEnabled:!0,progress:{position:0,offset:0}},s.onPageSelected=function(t){s.setState({page:t.nativeEvent.position})},s.onPageScroll=function(t){s.setState({progress:t.nativeEvent})},s.onPageScrollStateChanged=function(t){s.setState({scrollState:t})},s.move=function(t){var n=s.state.page+t;s.go(n)},s.go=function(t){s.state.animationsAreEnabled?s.viewPager.setPage(t):s.viewPager.setPageWithoutAnimation(t),s.setState({page:t})},s}return s(h,u),n(h,[{key:"render",value:function(){for(var t=this,n=[],o=0;o<5;o++){var l={backgroundColor:P[o%P.length],alignItems:'center',padding:20};n.push(c.createElement(v,{key:o,style:l,collapsable:!1},c.createElement(p,{style:T.image,source:{uri:S[o%P.length]}}),c.createElement(k,null)))}var s=this.state,u=s.page,h=s.animationsAreEnabled;return c.createElement(v,{style:T.container},c.createElement(y,{style:T.viewPager,initialPage:0,scrollEnabled:this.state.scrollEnabled,onPageScroll:this.onPageScroll,onPageSelected:this.onPageSelected,onPageScrollStateChanged:this.onPageScrollStateChanged,pageMargin:10,ref:function(n){t.viewPager=n}},n),c.createElement(v,{style:T.buttons},c.createElement(x,{enabled:!0,text:this.state.scrollEnabled?'Scroll Enabled':'Scroll Disabled',onPress:function(){return t.setState({scrollEnabled:!t.state.scrollEnabled})}})),c.createElement(v,{style:T.buttons},h?c.createElement(x,{text:"Turn off animations",enabled:!0,onPress:function(){return t.setState({animationsAreEnabled:!1})}}):c.createElement(x,{text:"Turn animations back 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T=h.create({buttons:{flexDirection:'row',height:30,backgroundColor:'black',alignItems:'center',justifyContent:'space-between'},button:{flex:1,width:0,margin:5,borderColor:'gray',borderWidth:1,backgroundColor:'gray'},buttonDisabled:{backgroundColor:'black',opacity:.5},buttonText:{color:'white'},scrollStateText:{color:'#99d1b7'},container:{flex:1,backgroundColor:'white'},image:{width:300,height:200,padding:20},likeButton:{backgroundColor:'rgba(0, 0, 0, 0.1)',borderColor:'#333333',borderWidth:1,borderRadius:5,flex:1,margin:8,padding:8},likeContainer:{flexDirection:'row'},likesText:{flex:1,fontSize:18,alignSelf:'center'},progressBarContainer:{height:10,margin:10,borderColor:'#eeeeee',borderWidth:2},progressBar:{alignSelf:'flex-start',flex:1,backgroundColor:'#eeeeee'},viewPager:{flex:1}});m.exports=w},408,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),c=r(d[5]),u=r(d[6]),h=u.StyleSheet,b=u.Text,f=u.TextInput,p=u.TouchableWithoutFeedback,w=u.TouchableOpacity,E=u.View,y=u.WebView,v='rgba(255,255,255,0.8)',S='urlInput',C='webview',B='https://m.facebook.com',k=['file://*','http://*','https://*'],T=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=o(this,(n=s(h)).call.apply(n,[this].concat(u)))).state={url:B,status:'No Page Loaded',backButtonEnabled:!1,forwardButtonEnabled:!1,loading:!0,scalesPageToFit:!0},l.inputText='',l.handleTextInputChange=function(t){var n=t.nativeEvent.text;/^[a-zA-Z-_]+:/.test(n)||(n='http://'+n),l.inputText=n},l.goBack=function(){l.refs[C].goBack()},l.goForward=function(){l.refs[C].goForward()},l.reload=function(){l.refs[C].reload()},l.onShouldStartLoadWithRequest=function(t){return!0},l.onNavigationStateChange=function(t){l.setState({backButtonEnabled:t.canGoBack,forwardButtonEnabled:t.canGoForward,url:t.url,status:t.title,loading:t.loading,scalesPageToFit:!0})},l.onSubmitEditing=function(t){l.pressGoButton()},l.pressGoButton=function(){var t=l.inputText.toLowerCase();t===l.state.url?l.reload():l.setState({url:t}),l.refs[S].blur()},l}return l(h,u),n(h,[{key:"render",value:function(){return this.inputText=this.state.url,c.createElement(E,{style:[W.container]},c.createElement(E,{style:[W.addressBarRow]},c.createElement(w,{onPress:this.goBack,style:this.state.backButtonEnabled?W.navButton:W.disabledButton},c.createElement(b,null,'<')),c.createElement(w,{onPress:this.goForward,style:this.state.forwardButtonEnabled?W.navButton:W.disabledButton},c.createElement(b,null,'>')),c.createElement(f,{ref:S,autoCapitalize:"none",defaultValue:this.state.url,onSubmitEditing:this.onSubmitEditing,onChange:this.handleTextInputChange,clearButtonMode:"while-editing",style:W.addressBarTextInput}),c.createElement(w,{onPress:this.pressGoButton},c.createElement(E,{style:W.goButton},c.createElement(b,null,"Go!")))),c.createElement(y,{ref:C,automaticallyAdjustContentInsets:!1,style:W.webView,source:{uri:this.state.url},javaScriptEnabled:!0,domStorageEnabled:!0,decelerationRate:"normal",onNavigationStateChange:this.onNavigationStateChange,onShouldStartLoadWithRequest:this.onShouldStartLoadWithRequest,startInLoadingState:!0,scalesPageToFit:this.state.scalesPageToFit}),c.createElement(E,{style:W.statusBar},c.createElement(b,{style:W.statusBarText},this.state.status)))}}]),h})(c.Component),x=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=o(this,(n=s(h)).call.apply(n,[this].concat(u))))._handlePress=function(){!1!==l.props.enabled&&l.props.onPress&&l.props.onPress()},l}return l(h,u),n(h,[{key:"render",value:function(){return c.createElement(p,{onPress:this._handlePress},c.createElement(E,{style:W.button},c.createElement(b,null,this.props.text)))}}]),h})(c.Component),P=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=o(this,(n=s(h)).call.apply(n,[this].concat(u)))).state={scalingEnabled:!0},l}return l(h,u),n(h,[{key:"render",value:function(){var t=this;return c.createElement(E,null,c.createElement(y,{style:{backgroundColor:v,height:200},source:{uri:'https://facebook.github.io/react/'},scalesPageToFit:this.state.scalingEnabled}),c.createElement(E,{style:W.buttons},this.state.scalingEnabled?c.createElement(x,{text:"Scaling:ON",enabled:!0,onPress:function(){return t.setState({scalingEnabled:!1})}}):c.createElement(x,{text:"Scaling:OFF",enabled:!0,onPress:function(){return t.setState({scalingEnabled:!0})}})))}}]),h})(c.Component),F=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=o(this,(n=s(h)).call.apply(n,[this].concat(u)))).webview=null,l.state={messagesReceivedFromWebView:0,message:''},l.onMessage=function(t){return l.setState({messagesReceivedFromWebView:l.state.messagesReceivedFromWebView+1,message:t.nativeEvent.data})},l.postMessage=function(){l.webview&&l.webview.postMessage('"Hello" from React Native!')},l}return l(h,u),n(h,[{key:"render",value:function(){var t=this,n=this.state,o=n.messagesReceivedFromWebView,s=n.message;return c.createElement(E,{style:[W.container,{height:200}]},c.createElement(E,{style:W.container},c.createElement(b,null,"Messages received from web view: ",o),c.createElement(b,null,s||'(No message)'),c.createElement(E,{style:W.buttons},c.createElement(x,{text:"Send Message to Web View",enabled:!0,onPress:this.postMessage}))),c.createElement(E,{style:W.container},c.createElement(y,{ref:function(n){t.webview=n},style:{backgroundColor:v,height:100},originWhitelist:k,source:r(d[7]),onMessage:this.onMessage})))}}]),h})(c.Component),R=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=o(this,(n=s(h)).call.apply(n,[this].concat(u)))).webview=null,l.injectJS=function(){l.webview&&l.webview.injectJavaScript('document.write("Injected JS ")')},l}return l(h,u),n(h,[{key:"render",value:function(){var t=this;return c.createElement(E,null,c.createElement(y,{ref:function(n){t.webview=n},style:{backgroundColor:v,height:300},source:{uri:'https://www.facebook.com'},scalesPageToFit:!0}),c.createElement(E,{style:W.buttons},c.createElement(x,{text:"Inject JS",enabled:!0,onPress:this.injectJS})))}}]),h})(c.Component),W=h.create({container:{flex:1,backgroundColor:'#3b5998'},addressBarRow:{flexDirection:'row',padding:8},webView:{backgroundColor:v,height:350},addressBarTextInput:{backgroundColor:v,borderColor:'transparent',borderRadius:3,borderWidth:1,height:24,paddingLeft:10,paddingTop:3,paddingBottom:3,flex:1,fontSize:14},navButton:{width:20,padding:3,marginRight:3,alignItems:'center',justifyContent:'center',backgroundColor:v,borderColor:'transparent',borderRadius:3},disabledButton:{width:20,padding:3,marginRight:3,alignItems:'center',justifyContent:'center',backgroundColor:'rgba(255,255,255,0.25)',borderColor:'transparent',borderRadius:3},goButton:{height:24,padding:3,marginLeft:8,alignItems:'center',backgroundColor:v,borderColor:'transparent',borderRadius:3,alignSelf:'stretch'},statusBar:{flexDirection:'row',alignItems:'center',paddingLeft:5,height:22},statusBarText:{color:'white',fontSize:13},buttons:{flexDirection:'row',height:30,backgroundColor:'black',alignItems:'center',justifyContent:'space-between'},button:{flex:.5,width:0,margin:5,borderColor:'gray',borderWidth:1,backgroundColor:'gray'}});e.displayName=void 0,e.title='<WebView>',e.description='Base component to display web content',e.examples=[{title:'Simple Browser',render:function(){return c.createElement(T,null)}},{title:'Scale Page to Fit',render:function(){return c.createElement(P,null)}},{title:'Bundled HTML',render:function(){return c.createElement(y,{style:{backgroundColor:v,height:100},allowFileAccess:!0,originWhitelist:k,source:r(d[8]),scalesPageToFit:!0})}},{title:'Static HTML',render:function(){return c.createElement(y,{style:{backgroundColor:v,height:100},source:{html:"\n<!DOCTYPE html>\n\n<html>\n  <head>\n    <title>Hello Static World</title>\n    <meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\">\n    <meta name=\"viewport\" content=\"width=320, user-scalable=no\">\n    <style type=\"text/css\">\n      body {\n        margin: 0;\n        padding: 0;\n        font: 62.5% arial, sans-serif;\n        background: #ccc;\n      }\n      h1 {\n        padding: 45px;\n        margin: 0;\n        text-align: center;\n        color: #33f;\n      }\n    </style>\n  </head>\n  <body>\n    <h1>Hello Static World</h1>\n  </body>\n</html>\n"},scalesPageToFit:!0})}},{title:'POST Test',render:function(){return c.createElement(y,{style:{backgroundColor:v,height:100},source:{uri:'http://www.posttestserver.com/post.php',method:'POST',body:'foo=bar&bar=foo'},scalesPageToFit:!1})}},{title:'Messaging Test',render:function(){return c.createElement(F,null)}},{title:'Inject JavaScript',render:function(){return c.createElement(R,null)}}]},409,[1,2,3,6,7,125,202,410,411]);
+__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",scales:[1],hash:"63afa4865a5c48dac612914bb385f093",name:"messagingtest",type:"html"})},410,[169]);
+__d(function(g,r,i,a,m,e,d){m.exports=r(d[0]).registerAsset({__packager_asset:!0,httpServerLocation:"/assets/RNTester/js",scales:[1],hash:"c51057524a9d1776c963663369289d1a",name:"helloworld",type:"html"})},411,[169]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),c=r(d[2]),n=r(d[3]),s=r(d[4]),o=r(d[5]),b=r(d[6]),u=b.AccessibilityInfo,h=b.StyleSheet,y=b.Text,E=b.View,w=b.ToastAndroid,p=b.TouchableWithoutFeedback,f=r(d[7]),A=r(d[8]),k=['auto','yes','no','no-hide-descendants'],T=(function(b){function h(){var l,s;t(this,h);for(var o=arguments.length,b=new Array(o),u=0;u<o;u++)b[u]=arguments[u];return(s=c(this,(l=n(h)).call.apply(l,[this].concat(b)))).state={count:0,backgroundImportantForAcc:0,forgroundImportantForAcc:0,screenReaderEnabled:!1},s._handleScreenReaderToggled=function(t){s.setState({screenReaderEnabled:t})},s._addOne=function(){s.setState({count:++s.state.count})},s._changeBackgroundImportantForAcc=function(){s.setState({backgroundImportantForAcc:(s.state.backgroundImportantForAcc+1)%4})},s._changeForgroundImportantForAcc=function(){s.setState({forgroundImportantForAcc:(s.state.forgroundImportantForAcc+1)%4})},s}return s(h,b),l(h,[{key:"componentDidMount",value:function(){var t=this;u.addEventListener('change',this._handleScreenReaderToggled),u.fetch().done(function(l){t.setState({screenReaderEnabled:l})})}},{key:"componentWillUnmount",value:function(){u.removeEventListener('change',this._handleScreenReaderToggled)}},{key:"render",value:function(){return o.createElement(A,{title:'Accessibility'},o.createElement(f,{title:"Nonaccessible view with TextViews"},o.createElement(E,null,o.createElement(y,{style:{color:'green'}},"This is"),o.createElement(y,{style:{color:'blue'}},"nontouchable normal view."))),o.createElement(f,{title:"Accessible view with TextViews wihout label"},o.createElement(E,{accessible:!0},o.createElement(y,{style:{color:'green'}},"This is"),o.createElement(y,{style:{color:'blue'}},"nontouchable accessible view without label."))),o.createElement(f,{title:"Accessible view with TextViews with label"},o.createElement(E,{accessible:!0,accessibilityLabel:"I have label, so I read it instead of embedded text."},o.createElement(y,{style:{color:'green'}},"This is"),o.createElement(y,{style:{color:'blue'}},"nontouchable accessible view with label."))),o.createElement(f,{title:"Touchable with accessibilityRole = button"},o.createElement(p,{onPress:function(){return w.show('Toasts work by default',w.SHORT)},accessibilityRole:"button"},o.createElement(E,{style:F.embedded},o.createElement(y,null,"Click me"),o.createElement(y,null,"Or not")))),o.createElement(f,{title:"Disabled Touchable with accessibilityRole = button"},o.createElement(p,{onPress:function(){return w.show('Toasts work by default',w.SHORT)},accessibilityRole:"button",accessibilityStates:['disabled'],disabled:!0},o.createElement(E,null,o.createElement(y,null,"I am disabled"),o.createElement(y,null,"Clicking me will not trigger any action.")))),o.createElement(f,{title:"Touchable with accessibilityRole = button and accessibilityHint"},o.createElement(p,{onPress:function(){return w.show('Toasts work by default',w.SHORT)},accessibilityRole:"button",accessibilityHint:"Triggers\r Toasts"},o.createElement(E,null,o.createElement(y,null,"Click Me!")))),o.createElement(f,{title:"Accessible View with hint, role, and state"},o.createElement(E,{accessible:!0,accessibilityRole:"button",accessibilityStates:['selected'],accessibilityHint:"accessibility hint"},o.createElement(y,null,"Accessible view with hint, role, and state"),o.createElement(y,{style:{color:'gray'}},"Talkback will say: accessibility hint button, selected",' '))),o.createElement(f,{title:"Accessible View with label, hint, role, and state"},o.createElement(E,{accessible:!0,accessibilityLabel:"accessibility Label",accessibilityRole:"button",accessibilityStates:['selected'],accessibilityHint:"accessibility Hint"},o.createElement(y,null,"Accessible view with label, hint, role, and state"),o.createElement(y,{style:{color:'gray'}},"Talkback will say: accessibility label, hint button, selected",' '))),o.createElement(f,{title:"Accessible View with no other properties set"},o.createElement(E,{accessible:!0},o.createElement(y,null,"This accessible view has no label, so the text is read."))),o.createElement(f,{title:"LiveRegion"},o.createElement(p,{onPress:this._addOne},o.createElement(E,{style:F.embedded},o.createElement(y,null,"Click me"))),o.createElement(y,{accessibilityLiveRegion:"polite"},"Clicked ",this.state.count," times")),o.createElement(f,{title:"Check if the screen reader is enabled"},o.createElement(y,null,"The screen reader is",' ',this.state.screenReaderEnabled?'enabled':'disabled',".")),o.createElement(f,{title:"Overlapping views and importantForAccessibility property"},o.createElement(E,{style:F.container},o.createElement(E,{style:{position:'absolute',left:10,top:10,right:10,height:100,backgroundColor:'green'},accessible:!0,accessibilityLabel:"First layout",importantForAccessibility:k[this.state.backgroundImportantForAcc]},o.createElement(E,{accessible:!0},o.createElement(y,{style:{fontSize:25}},"Hello"))),o.createElement(E,{style:{position:'absolute',left:10,top:25,right:10,height:110,backgroundColor:'yellow',opacity:.5},accessible:!0,accessibilityLabel:"Second layout",importantForAccessibility:k[this.state.forgroundImportantForAcc]},o.createElement(E,{accessible:!0},o.createElement(y,{style:{fontSize:20}},"world")))),o.createElement(p,{onPress:this._changeBackgroundImportantForAcc},o.createElement(E,{style:F.embedded},o.createElement(y,null,"Change importantForAccessibility for background layout."))),o.createElement(E,{accessible:!0},o.createElement(y,null,"Background layout importantForAccessibility"),o.createElement(y,null,k[this.state.backgroundImportantForAcc])),o.createElement(p,{onPress:this._changeForgroundImportantForAcc},o.createElement(E,{style:F.embedded},o.createElement(y,null,"Change importantForAccessibility for forground layout."))),o.createElement(E,{accessible:!0},o.createElement(y,null,"Forground layout importantForAccessibility"),o.createElement(y,null,k[this.state.forgroundImportantForAcc]))))}}]),h})(o.Component);T.title='Accessibility',T.description='Examples of using Accessibility API.';var F=h.create({embedded:{backgroundColor:'yellow',padding:10},container:{flex:1,backgroundColor:'white',padding:10,height:150}});m.exports=T},412,[1,2,3,6,7,125,202,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),s=r(d[4]),u=r(d[5]),c=r(d[6]),p=c.Alert,f=c.StyleSheet,E=c.Text,y=c.TouchableHighlight,P=c.View,h=r(d[7]),b="Credibly reintermediate next-generation potentialities after goal-oriented catalysts for change. Dynamically revolutionize.",A=(function(c){function f(){return t(this,f),l(this,o(f).apply(this,arguments))}return s(f,c),n(f,[{key:"render",value:function(){return u.createElement(P,null,u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Alert Title',b)}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert with message and default button"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Alert Title',b,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert with one button"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Alert Title',b,[{text:'Cancel',onPress:function(){return console.log('Cancel Pressed!')}},{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert with two buttons"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Alert Title',null,[{text:'Foo',onPress:function(){return console.log('Foo Pressed!')}},{text:'Bar',onPress:function(){return console.log('Bar Pressed!')}},{text:'Baz',onPress:function(){return console.log('Baz Pressed!')}}])}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert with three buttons"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Foo Title',b,'..............'.split('').map(function(t,n){return{text:'Button '+n,onPress:function(){return console.log('Pressed '+n)}}}))}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert with too many buttons"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('Alert Title',null,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}],{cancelable:!1})}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert that cannot be dismissed"))),u.createElement(y,{style:x.wrapper,onPress:function(){return p.alert('',b,[{text:'OK',onPress:function(){return console.log('OK Pressed!')}}])}},u.createElement(P,{style:x.button},u.createElement(E,null,"Alert without title"))))}}]),f})(u.Component),w=(function(c){function p(){return t(this,p),l(this,o(p).apply(this,arguments))}return s(p,c),n(p,[{key:"render",value:function(){return u.createElement(h,{title:'Alert'},u.createElement(A,null))}}]),p})(u.Component);w.title='Alert',w.description="Alerts display a concise and informative message and prompt the user to make a decision.";var x=f.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}});m.exports={AlertExample:w,SimpleAlertExampleBlock:A}},413,[1,2,3,6,7,125,202,348]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),l=r(d[5]),c=r(d[6]),p=c.Animated,h=c.Easing,f=c.StyleSheet,E=c.Text,w=c.View,v=r(d[7]);e.framework='React',e.title='Animated - Examples',e.description="Animated provides a powerful and easy-to-use API for building modern, interactive user experiences.",e.examples=[{title:'FadeInView',description:"Uses a simple timing animation to bring opacity from 0 to 1 when the component mounts.",render:function(){var c=(function(c){function h(n){var u;return t(this,h),(u=o(this,s(h).call(this,n))).state={fadeAnim:new p.Value(0)},u}return u(h,c),n(h,[{key:"componentDidMount",value:function(){p.timing(this.state.fadeAnim,{toValue:1,duration:2e3}).start()}},{key:"render",value:function(){return l.createElement(p.View,{style:{opacity:this.state.fadeAnim}},this.props.children)}}]),h})(l.Component),h=(function(p){function h(n){var u;return t(this,h),(u=o(this,s(h).call(this,n))).state={show:!0},u}return u(h,p),n(h,[{key:"render",value:function(){var t=this;return l.createElement(w,null,l.createElement(v,{onPress:function(){t.setState(function(t){return{show:!t.show}})}},"Press to ",this.state.show?'Hide':'Show'),this.state.show&&l.createElement(c,null,l.createElement(w,{style:y.content},l.createElement(E,null,"FadeInView"))))}}]),h})(l.Component);return l.createElement(h,null)}},{title:'Transform Bounce',description:"One `Animated.Value` is driven by a spring with custom constants and mapped to an ordered set of transforms.  Each transform has an interpolation to convert the value into the right range and units.",render:function(){var t=this;return this.anim=this.anim||new p.Value(0),l.createElement(w,null,l.createElement(v,{onPress:function(){p.spring(t.anim,{toValue:0,velocity:3,tension:-10,friction:1}).start()}},"Press to Fling it!"),l.createElement(p.View,{style:[y.content,{transform:[{scale:this.anim.interpolate({inputRange:[0,1],outputRange:[1,4]})},{translateX:this.anim.interpolate({inputRange:[0,1],outputRange:[0,500]})},{rotate:this.anim.interpolate({inputRange:[0,1],outputRange:['0deg','360deg']})}]}]},l.createElement(E,null,"Transforms!")))}},{title:'Composite Animations with Easing',description:"Sequence, parallel, delay, and stagger with different easing functions.",render:function(){var t=this;return this.anims=this.anims||[1,2,3].map(function(){return new p.Value(0)}),l.createElement(w,null,l.createElement(v,{onPress:function(){var n=p.timing;p.sequence([n(t.anims[0],{toValue:200,easing:h.linear}),p.delay(400),n(t.anims[0],{toValue:0,easing:h.elastic(2)}),p.delay(400),p.stagger(200,t.anims.map(function(t){return n(t,{toValue:200})}).concat(t.anims.map(function(t){return n(t,{toValue:0})}))),p.delay(400),p.parallel([h.inOut(h.quad),h.back(1.5),h.ease].map(function(o,s){return n(t.anims[s],{toValue:320,easing:o,duration:3e3})})),p.delay(400),p.stagger(200,t.anims.map(function(t){return n(t,{toValue:0,easing:h.bounce,duration:2e3})}))]).start()}},"Press to Animate"),['Composite','Easing','Animations!'].map(function(n,o){return l.createElement(p.View,{key:n,style:[y.content,{left:t.anims[o]}]},l.createElement(E,null,n))}))}},{title:'Rotating Images',description:'Simple Animated.Image rotation.',render:function(){var t=this;return this.anim=this.anim||new p.Value(0),l.createElement(w,null,l.createElement(v,{onPress:function(){p.spring(t.anim,{toValue:0,velocity:3,tension:-10,friction:1}).start()}},"Press to Spin it!"),l.createElement(p.Image,{source:r(d[8]),style:[y.rotatingImage,{transform:[{scale:this.anim.interpolate({inputRange:[0,1],outputRange:[1,10]})},{translateX:this.anim.interpolate({inputRange:[0,1],outputRange:[0,100]})},{rotate:this.anim.interpolate({inputRange:[0,1],outputRange:['0deg','360deg']})}]}]}))}},{title:'Continuous Interactions',description:"Gesture events, chaining, 2D values, interrupting and transitioning animations, etc.",render:function(){return l.createElement(E,null,"Checkout the Gratuitous Animation App!")}}];var y=f.create({content:{backgroundColor:'deepskyblue',borderWidth:1,borderColor:'dodgerblue',padding:20,margin:20,borderRadius:10,alignItems:'center'},rotatingImage:{width:70,height:70}})},414,[1,2,3,6,7,125,202,415,380]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),u=r(d[4]),l=r(d[5]),c=r(d[6]),h=c.StyleSheet,p=c.Text,b=c.TouchableHighlight,y=(function(c){function h(){return t(this,h),o(this,s(h).apply(this,arguments))}return u(h,c),n(h,[{key:"render",value:function(){return l.createElement(b,{onPress:this.props.onPress,style:f.button,underlayColor:"grey"},l.createElement(p,null,this.props.children))}}]),h})(l.Component),f=h.create({button:{borderColor:'#696969',borderRadius:8,borderWidth:1,padding:10,margin:5,alignItems:'center',justifyContent:'center',backgroundColor:'#d3d3d3'}});m.exports=y},415,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),p=r(d[5]),u=r(d[6]),c=u.AppState,h=u.Text,y=u.View,S=(function(u){function S(){var n,l;t(this,S);for(var p=arguments.length,u=new Array(p),h=0;h<p;h++)u[h]=arguments[h];return(l=s(this,(n=o(S)).call.apply(n,[this].concat(u)))).state={appState:c.currentState,previousAppStates:[],memoryWarnings:0},l._handleMemoryWarning=function(){l.setState({memoryWarnings:l.state.memoryWarnings+1})},l._handleAppStateChange=function(t){var n=l.state.previousAppStates.slice();n.push(l.state.appState),l.setState({appState:t,previousAppStates:n})},l}return l(S,u),n(S,[{key:"componentDidMount",value:function(){c.addEventListener('change',this._handleAppStateChange),c.addEventListener('memoryWarning',this._handleMemoryWarning)}},{key:"componentWillUnmount",value:function(){c.removeEventListener('change',this._handleAppStateChange),c.removeEventListener('memoryWarning',this._handleMemoryWarning)}},{key:"render",value:function(){return this.props.showMemoryWarnings?p.createElement(y,null,p.createElement(h,null,this.state.memoryWarnings)):this.props.showCurrentOnly?p.createElement(y,null,p.createElement(h,null,this.state.appState)):p.createElement(y,null,p.createElement(h,null,JSON.stringify(this.state.previousAppStates)))}}]),S})(p.Component);e.title='AppState',e.description='app background status',e.examples=[{title:'AppState.currentState',description:'Can be null on app initialization',render:function(){return p.createElement(h,null,c.currentState)}},{title:'Subscribed AppState:',description:'This changes according to the current state, so you can only ever see it rendered as "active"',render:function(){return p.createElement(S,{showCurrentOnly:!0})}},{title:'Previous states:',render:function(){return p.createElement(S,{showCurrentOnly:!1})}},{platform:'ios',title:'Memory Warnings',description:'In the IOS simulator, hit Shift+Command+M to simulate a memory warning.',render:function(){return p.createElement(S,{showMemoryWarnings:!0})}}]},416,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var o=r(d[0]),t=r(d[1]),b=t.StyleSheet,l=t.View,n=b.create({box:{width:100,height:100},wrapper:{flexDirection:'row'},border1:{borderWidth:10,borderColor:'brown'},borderRadius:{borderWidth:10,borderRadius:10,borderColor:'cyan'},border2:{borderWidth:10,borderTopColor:'red',borderRightColor:'yellow',borderBottomColor:'green',borderLeftColor:'blue'},border3:{borderColor:'purple',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40},border4:{borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue'},border5:{borderRadius:50,borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue'},border6:{borderTopWidth:10,borderTopColor:'red',borderRightWidth:20,borderRightColor:'yellow',borderBottomWidth:30,borderBottomColor:'green',borderLeftWidth:40,borderLeftColor:'blue',borderTopLeftRadius:100},border7:{borderWidth:10,borderColor:'#f007',borderRadius:30,overflow:'hidden'},border7_inner:{backgroundColor:'blue',width:100,height:100},border8:{width:60,height:60,borderColor:'black',marginRight:10,backgroundColor:'lightgrey'},border8Top:{borderTopWidth:5},border8Left:{borderLeftWidth:5},border8Bottom:{borderBottomWidth:5},border8Right:{borderRightWidth:5},border9:{borderWidth:10,borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'black'},border10:{borderWidth:10,backgroundColor:'white',borderTopLeftRadius:10,borderBottomRightRadius:20,borderColor:'black',elevation:10},border11:{width:0,height:0,borderStyle:'solid',overflow:'hidden',borderTopWidth:50,borderRightWidth:0,borderBottomWidth:50,borderLeftWidth:100,borderTopColor:'transparent',borderRightColor:'transparent',borderBottomColor:'transparent',borderLeftColor:'red'},border12:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderRadius:20},border13:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderTopColor:'red',borderRightColor:'green',borderBottomColor:'blue',borderLeftColor:'magenta',borderRadius:20},border14:{borderStyle:'solid',overflow:'hidden',borderTopWidth:10,borderRightWidth:20,borderBottomWidth:30,borderLeftWidth:40,borderTopColor:'red',borderRightColor:'green',borderBottomColor:'blue',borderLeftColor:'magenta',borderTopLeftRadius:10,borderTopRightRadius:40,borderBottomRightRadius:30,borderBottomLeftRadius:40}});e.title='Border',e.description='Demonstrates some of the border styles available to Views.',e.examples=[{title:'Equal-Width / Same-Color',description:'borderWidth & borderColor',render:function(){return o.createElement(l,{style:[n.box,n.border1]})}},{title:'Equal-Width / Same-Color',description:'borderWidth & borderColor & borderRadius',render:function(){return o.createElement(l,{style:[n.box,n.borderRadius]})}},{title:'Equal-Width Borders',description:'borderWidth & border*Color',render:function(){return o.createElement(l,{style:[n.box,n.border2]})}},{title:'Same-Color Borders',description:'border*Width & borderColor',render:function(){return o.createElement(l,{style:[n.box,n.border3]})}},{title:'Custom Borders',description:'border*Width & border*Color',render:function(){return o.createElement(l,{style:[n.box,n.border4]})}},{title:'Custom Borders',description:'border*Width & border*Color',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border5]})}},{title:'Custom Borders',description:'border*Width & border*Color',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border6]})}},{title:'Custom Borders',description:'borderRadius & clipping',platform:['ios','macos'],render:function(){return o.createElement(l,{style:[n.box,n.border7]},o.createElement(l,{style:n.border7_inner}))}},{title:'Single Borders',description:'top, left, bottom right',render:function(){return o.createElement(l,{style:n.wrapper},o.createElement(l,{style:[n.box,n.border8,n.border8Top]}),o.createElement(l,{style:[n.box,n.border8,n.border8Left]}),o.createElement(l,{style:[n.box,n.border8,n.border8Bottom]}),o.createElement(l,{style:[n.box,n.border8,n.border8Right]}))}},{title:'Corner Radii',description:'borderTopLeftRadius & borderBottomRightRadius',render:function(){return o.createElement(l,{style:[n.box,n.border9]})}},{title:'Corner Radii / Elevation',description:'borderTopLeftRadius & borderBottomRightRadius & elevation',platform:'android',render:function(){return o.createElement(l,{style:[n.box,n.border10]})}},{title:'CSS Trick - Triangle',description:'create a triangle by manipulating border colors and widths',render:function(){return o.createElement(l,{style:[n.border11]})}},{title:'Curved border(Left|Right|Bottom|Top)Width',description:'Make a non-uniform width curved border',render:function(){return o.createElement(l,{style:[n.box,n.border12]})}},{title:'Curved border(Left|Right|Bottom|Top)Color',description:'Make a non-uniform color curved border',render:function(){return o.createElement(l,{style:[n.box,n.border13]})}},{title:'Curved border(Top|Bottom)(Left|Right)Radius',description:'Make a non-uniform radius curved border',render:function(){return o.createElement(l,{style:[n.box,n.border14]})}}]},417,[125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),s=r(d[4]),u=r(d[5]),c=r(d[6]),h=r(d[7]),p=h.CameraRoll,f=h.Image,y=h.Slider,E=h.StyleSheet,S=h.Switch,w=h.Text,v=h.View,C=h.TouchableOpacity,_=r(d[8]),b=r(d[9]),I=r(d[10]),T=(function(h){function E(){var n,u;t(this,E);for(var h=arguments.length,y=new Array(h),S=0;S<h;S++)y[S]=arguments[S];return(u=l(this,(n=o(E)).call.apply(n,[this].concat(y)))).state={groupTypes:'SavedPhotos',sliderValue:1,bigImages:!0},u._renderImage=function(t){var n=u.state.bigImages?150:75,l=[V.image,{width:n,height:n}],o=t.node.location,h=o?JSON.stringify(o):'Unknown location';return c.createElement(C,{key:t.node.image.uri,onPress:u.loadAsset.bind(s(u),t)},c.createElement(v,{style:V.row},c.createElement(f,{source:t.node.image,style:l}),c.createElement(v,{style:V.info},c.createElement(w,{style:V.url},t.node.image.uri),c.createElement(w,null,h),c.createElement(w,null,t.node.group_name),c.createElement(w,null,new Date(t.node.timestamp).toString()))))},u._onSliderChange=function(t){var n=Object.keys(p.GroupTypesOptions),l=n[Math.floor(t*n.length*.99)];l!==u.state.groupTypes&&u.setState({groupTypes:l})},u._onSwitchChange=function(t){_(u._cameraRollView,'ref should be set'),u._cameraRollView.rendererChanged(),u.setState({bigImages:t})},u}return u(E,h),n(E,[{key:"render",value:function(){var t=this;return c.createElement(v,null,c.createElement(S,{onValueChange:this._onSwitchChange,value:this.state.bigImages}),c.createElement(w,null,(this.state.bigImages?'Big':'Small')+' Images'),c.createElement(y,{value:this.state.sliderValue,onValueChange:this._onSliderChange}),c.createElement(w,null,'Group Type: '+this.state.groupTypes),c.createElement(b,{ref:function(n){t._cameraRollView=n},batchSize:20,groupTypes:this.state.groupTypes,renderImage:this._renderImage}))}},{key:"loadAsset",value:function(t){this.props.navigator&&this.props.navigator.push({title:'Camera Roll Image',component:I,backButtonTitle:'Back',passProps:{asset:t}})}}]),E})(c.Component),V=E.create({row:{flexDirection:'row',flex:1},url:{fontSize:9,marginBottom:14},image:{margin:4},info:{flex:1}});e.title='Camera Roll',e.description="Example component that uses CameraRoll to list user's photos",e.examples=[{title:'Photos',render:function(){return c.createElement(T,null)}}]},418,[1,2,3,6,5,7,125,202,20,419,421]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),c=r(d[4]),u=r(d[5]),l=r(d[6]),h=r(d[7]),p=h.ActivityIndicator,f=h.Alert,S=h.CameraRoll,y=h.Image,v=h.ListView,w=h.PermissionsAndroid,_=(h.Platform,h.StyleSheet),R=h.View,E=(r(d[8]),r(d[9])),x=r(d[10]);function P(t,n){if(t.length!==n.length)return!0;for(var s=0;s<t.length;s++)if(t[s]!==n[s])return!0;return!1}var T=(function(h){function y(){var t,s;n(this,y);for(var u=arguments.length,h=new Array(u),f=0;f<u;f++)h[f]=arguments[f];return(s=o(this,(t=c(y)).call.apply(t,[this].concat(h)))).state=s.getInitialState(),s.fetch=function(t){s.state.loadingMore||s.setState({loadingMore:!0},function(){s._fetch(t)})},s._renderFooterSpinner=function(){return s.state.noMore?null:l.createElement(p,null)},s._renderRow=function(t,n,o){var c=t.map(function(t){return null===t?null:s.props.renderImage(t)});return l.createElement(R,{style:k.row},c)},s._onEndReached=function(){s.state.noMore||s.fetch()},s}return u(y,h),s(y,[{key:"getInitialState",value:function(){return{assets:[],lastCursor:null,noMore:!1,loadingMore:!1,dataSource:new v.DataSource({rowHasChanged:P})}}},{key:"rendererChanged",value:function(){var t=new v.DataSource({rowHasChanged:P});this.state.dataSource=t.cloneWithRows(E(this.state.assets,this.props.imagesPerRow))}},{key:"componentDidMount",value:function(){this.fetch()}},{key:"UNSAFE_componentWillReceiveProps",value:function(t){this.props.groupTypes!==t.groupTypes&&this.fetch(!0)}},{key:"_fetch",value:function(n){var s,o;return t.async(function(c){for(;;)switch(c.prev=c.next){case 0:if(!n){c.next=3;break}return this.setState(this.getInitialState(),this.fetch),c.abrupt("return");case 3:return c.next=6,t.awrap(w.request(w.PERMISSIONS.READ_EXTERNAL_STORAGE,{title:'Permission Explanation',message:'RNTester would like to access your pictures.'}));case 6:if('granted'===c.sent){c.next=10;break}return f.alert('Access to pictures was denied.'),c.abrupt("return");case 10:return delete(s={first:this.props.batchSize,groupTypes:this.props.groupTypes,assetType:this.props.assetType}).groupTypes,this.state.lastCursor&&(s.after=this.state.lastCursor),c.prev=13,c.next=16,t.awrap(S.getPhotos(s));case 16:o=c.sent,this._appendAssets(o),c.next=23;break;case 20:c.prev=20,c.t0=c.catch(13),x(c.t0);case 23:case"end":return c.stop()}},null,this,[[13,20]])}},{key:"render",value:function(){return l.createElement(v,{renderRow:this._renderRow,renderFooter:this._renderFooterSpinner,onEndReached:this._onEndReached,style:k.container,dataSource:this.state.dataSource,enableEmptySections:!0})}},{key:"_appendAssets",value:function(t){var n=t.edges,s={loadingMore:!1};t.page_info.has_next_page||(s.noMore=!0),n.length>0&&(s.lastCursor=t.page_info.end_cursor,s.assets=this.state.assets.concat(n),s.dataSource=this.state.dataSource.cloneWithRows(E(s.assets,this.props.imagesPerRow))),this.setState(s)}}]),y})(l.Component);T.defaultProps={groupTypes:'SavedPhotos',batchSize:5,imagesPerRow:1,assetType:'Photos',renderImage:function(t){var n=[k.image,{width:150,height:150}];return l.createElement(y,{source:t.node.image,style:n})}};var k=_.create({row:{flexDirection:'row',flex:1},image:{margin:4},container:{flex:1}});m.exports=T},419,[108,1,2,3,6,7,125,202,293,420,111]);
+__d(function(g,r,i,a,m,e,d){'use strict';m.exports=function(n,t){for(var u=[],h=[],s=0;s<n.length;++s)s>0&&s%t==0&&(u.push(h),h=[]),h.push(n[s]);if(h.length>0){for(;h.length!==t;)h.push(null);u.push(h)}return u}},420,[]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),o=r(d[2]),n=r(d[3]),c=r(d[4]),s=r(d[5]),h=r(d[6]),u=h.Image,b=h.StyleSheet,y=h.View,p=h.ScrollView,w=(function(h){function b(){var l,c;t(this,b);for(var s=arguments.length,h=new Array(s),u=0;u<s;u++)h[u]=arguments[u];return(c=o(this,(l=n(b)).call.apply(l,[this].concat(h)))).state={asset:c.props.asset},c}return c(b,h),l(b,[{key:"render",value:function(){var t=this.state.asset.node.image;return s.createElement(p,null,s.createElement(y,{style:E.row},s.createElement(u,{source:t,style:E.imageWide})),s.createElement(y,{style:E.row},s.createElement(u,{source:t,style:E.imageThumb}),s.createElement(u,{source:t,style:E.imageThumb}),s.createElement(u,{source:t,style:E.imageThumb})),s.createElement(y,{style:E.row},s.createElement(u,{source:t,style:E.imageT1}),s.createElement(u,{source:t,style:E.imageT2})))}}]),b})(s.Component),E=b.create({row:{padding:5,flex:1,flexDirection:'row',alignSelf:'center'},imageWide:{borderWidth:1,borderColor:'black',width:320,height:240,margin:5},imageThumb:{borderWidth:1,borderColor:'black',width:100,height:100,margin:5},imageT1:{borderWidth:1,borderColor:'black',width:212,height:320,margin:5},imageT2:{borderWidth:1,borderColor:'black',width:100,height:320,margin:5}});e.title='<AssetScaledImageExample>',e.description='Example component that displays the automatic scaling capabilities of the <Image /> tag',m.exports=w},421,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),c=r(d[4]),s=r(d[5]),p=r(d[6]),u=r(d[7]),h=u.Clipboard,b=u.View,C=u.Text,f=u.StyleSheet,v=(function(u){function f(){var l,s;n(this,f);for(var p=arguments.length,u=new Array(p),b=0;b<p;b++)u[b]=arguments[b];return(s=o(this,(l=c(f)).call.apply(l,[this].concat(u)))).state={content:'Content will appear here'},s._setClipboardContent=function(){var n;return t.async(function(l){for(;;)switch(l.prev=l.next){case 0:return h.setString('Hello World'),l.prev=1,l.next=4,t.awrap(h.getString());case 4:n=l.sent,s.setState({content:n}),l.next=11;break;case 8:l.prev=8,l.t0=l.catch(1),s.setState({content:l.t0.message});case 11:case"end":return l.stop()}},null,null,[[1,8]])},s}return s(f,u),l(f,[{key:"render",value:function(){return p.createElement(b,null,p.createElement(C,{onPress:this._setClipboardContent,style:S.label},"Tap to put \"Hello World\" in the clipboard"),p.createElement(C,{style:S.content},this.state.content))}}]),f})(p.Component);e.title='Clipboard',e.description='Show Clipboard contents.',e.examples=[{title:'Clipboard.setString() and getString()',render:function(){return p.createElement(v,null)}}];var S=f.create({label:{color:'blue'},content:{color:'red',marginTop:20}})},422,[108,1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),c=r(d[4]),o=r(d[5]),h=r(d[6]),p=r(d[7]),x=p.DatePickerAndroid,D=p.StyleSheet,k=p.Text,w=p.TouchableWithoutFeedback,E=r(d[8]),u=r(d[9]),P=(function(p){function D(){var s,o;n(this,D);for(var h=arguments.length,p=new Array(h),k=0;k<h;k++)p[k]=arguments[k];return(o=l(this,(s=c(D)).call.apply(s,[this].concat(p)))).state={presetDate:new Date(2020,4,5),simpleDate:new Date(2020,4,5),spinnerDate:new Date(2020,4,5),calendarDate:new Date(2020,4,5),defaultDate:new Date(2020,4,5),allDate:new Date(2020,4,5),simpleText:'pick a date',spinnerText:'pick a date',calendarText:'pick a date',defaultText:'pick a date',minText:'pick a date, no earlier than today',maxText:'pick a date, no later than today',presetText:'pick a date, preset to 2020/5/5',allText:'pick a date between 2020/5/1 and 2020/5/10'},o.showPicker=function(n,s){var l,c,h,p,D,k,w;return t.async(function(E){for(;;)switch(E.prev=E.next){case 0:return E.prev=0,l={},E.next=4,t.awrap(x.open(s));case 4:c=E.sent,h=c.action,p=c.year,D=c.month,k=c.day,h===x.dismissedAction?l[n+'Text']='dismissed':(w=new Date(p,D,k),l[n+'Text']=w.toLocaleDateString(),l[n+'Date']=w),o.setState(l),E.next=16;break;case 13:E.prev=13,E.t0=E.catch(0),console.warn("Error in example '"+n+"': ",E.t0.message);case 16:case"end":return E.stop()}},null,null,[[0,13]])},o}return o(D,p),s(D,[{key:"render",value:function(){return h.createElement(u,{title:"DatePickerAndroid"},h.createElement(E,{title:"Simple date picker"},h.createElement(w,{onPress:this.showPicker.bind(this,'simple',{date:this.state.simpleDate})},h.createElement(k,{style:T.text},this.state.simpleText))),h.createElement(E,{title:"Simple spinner date picker"},h.createElement(w,{onPress:this.showPicker.bind(this,'spinner',{date:this.state.spinnerDate,mode:'spinner'})},h.createElement(k,{style:T.text},this.state.spinnerText))),h.createElement(E,{title:"Simple calendar date picker"},h.createElement(w,{onPress:this.showPicker.bind(this,'calendar',{date:this.state.calendarDate,mode:'calendar'})},h.createElement(k,{style:T.text},this.state.calendarText))),h.createElement(E,{title:"Simple default date picker"},h.createElement(w,{onPress:this.showPicker.bind(this,'default',{date:this.state.defaultDate,mode:'default'})},h.createElement(k,{style:T.text},this.state.defaultText))),h.createElement(E,{title:"Date picker with pre-set date"},h.createElement(w,{onPress:this.showPicker.bind(this,'preset',{date:this.state.presetDate})},h.createElement(k,{style:T.text},this.state.presetText))),h.createElement(E,{title:"Date picker with minDate"},h.createElement(w,{onPress:this.showPicker.bind(this,'min',{date:this.state.minDate,minDate:new Date})},h.createElement(k,{style:T.text},this.state.minText))),h.createElement(E,{title:"Date picker with maxDate"},h.createElement(w,{onPress:this.showPicker.bind(this,'max',{date:this.state.maxDate,maxDate:new Date})},h.createElement(k,{style:T.text},this.state.maxText))),h.createElement(E,{title:"Date picker with all options"},h.createElement(w,{onPress:this.showPicker.bind(this,'all',{date:this.state.allDate,minDate:new Date(2020,4,1),maxDate:new Date(2020,4,10)})},h.createElement(k,{style:T.text},this.state.allText))))}}]),D})(h.Component);P.title='DatePickerAndroid',P.description='Standard Android date picker dialog';var T=D.create({text:{color:'black'}});m.exports=P},423,[108,1,2,3,6,7,125,202,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),s=r(d[2]),o=r(d[3]),c=r(d[4]),l=r(d[5]),u=r(d[6]),h=u.Dimensions,f=u.Text,p=u.View,v=(function(u){function v(){var t,c;n(this,v);for(var l=arguments.length,u=new Array(l),f=0;f<l;f++)u[f]=arguments[f];return(c=s(this,(t=o(v)).call.apply(t,[this].concat(u)))).state={dims:h.get(c.props.dim)},c._handleDimensionsChange=function(n){c.setState({dims:n[c.props.dim]})},c}return c(v,u),t(v,[{key:"componentDidMount",value:function(){h.addEventListener('change',this._handleDimensionsChange)}},{key:"componentWillUnmount",value:function(){h.removeEventListener('change',this._handleDimensionsChange)}},{key:"render",value:function(){return l.createElement(p,null,l.createElement(f,null,JSON.stringify(this.state.dims)))}}]),v})(l.Component);e.title='Dimensions',e.description='Dimensions of the viewport',e.examples=[{title:'window',render:function(){return l.createElement(v,{dim:"window"})}},{title:'screen',render:function(){return l.createElement(v,{dim:"screen"})}}]},424,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),c=r(d[4]),s=r(d[5]),u=r(d[6]),h=u.StyleSheet,f=u.Text,v=u.View,y=u.Alert;e.framework='React',e.title='Geolocation',e.description='Examples of using the Geolocation API.',e.examples=[{title:'navigator.geolocation',render:function(){return s.createElement(p,null)}}];var p=(function(u){function h(){var n,c;t(this,h);for(var s=arguments.length,u=new Array(s),f=0;f<s;f++)u[f]=arguments[f];return(c=o(this,(n=l(h)).call.apply(n,[this].concat(u)))).state={initialPosition:'unknown',lastPosition:'unknown'},c.watchID=null,c}return c(h,u),n(h,[{key:"componentDidMount",value:function(){var t=this;navigator.geolocation.getCurrentPosition(function(n){var o=JSON.stringify(n);t.setState({initialPosition:o})},function(t){return y.alert('Error',JSON.stringify(t))},{enableHighAccuracy:!0,timeout:2e4,maximumAge:1e3}),this.watchID=navigator.geolocation.watchPosition(function(n){var o=JSON.stringify(n);t.setState({lastPosition:o})})}},{key:"componentWillUnmount",value:function(){null!=this.watchID&&navigator.geolocation.clearWatch(this.watchID)}},{key:"render",value:function(){return s.createElement(v,null,s.createElement(f,null,s.createElement(f,{style:w.title},"Initial position: "),this.state.initialPosition),s.createElement(f,null,s.createElement(f,{style:w.title},"Current position: "),this.state.lastPosition))}}]),h})(s.Component),w=h.create({title:{fontWeight:'500'}})},425,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=r(d[2]),s=r(d[3]),h=r(d[4]),l=r(d[5]),c=r(d[6]),p=r(d[7]),u=p.CameraRoll,f=p.Image,_=p.ImageEditor,S=(p.Platform,p.ScrollView),y=p.StyleSheet,z=p.Text,I=p.TouchableHighlight,v=p.View,w=(function(p){function S(t){var n;return o(this,S),(n=s(this,h(S).call(this,t)))._isMounted=!0,n.state={randomPhoto:null,measuredSize:null,croppedImageURI:null,cropError:null},n._fetchRandomPhoto(),n}return l(S,p),n(S,[{key:"_fetchRandomPhoto",value:function(){var o,n,s,h;return t.async(function(l){for(;;)switch(l.prev=l.next){case 0:return l.prev=0,l.next=3,t.awrap(u.getPhotos({first:20}));case 3:if(o=l.sent,this._isMounted){l.next=6;break}return l.abrupt("return");case 6:n=o.edges,s=n[Math.floor(Math.random()*n.length)],(h=s&&s.node&&s.node.image)&&this.setState({randomPhoto:h}),l.next=15;break;case 12:l.prev=12,l.t0=l.catch(0),console.warn("Can't get a photo from camera roll",l.t0);case 15:case"end":return l.stop()}},null,this,[[0,12]])}},{key:"componentWillUnmount",value:function(){this._isMounted=!1}},{key:"render",value:function(){var t=this;return this.state.measuredSize?this.state.croppedImageURI?this._renderCroppedImage():this._renderImageCropper():c.createElement(v,{style:C.container,onLayout:function(o){var n=o.nativeEvent.layout.width;n&&t.setState({measuredSize:{width:n,height:n}})}})}},{key:"_renderImageCropper",value:function(){var t=this;if(!this.state.randomPhoto)return c.createElement(v,{style:C.container});var o=null;return this.state.cropError&&(o=c.createElement(z,null,this.state.cropError.message)),c.createElement(v,{style:C.container},c.createElement(z,null,"Drag the image within the square to crop:"),c.createElement(E,{image:this.state.randomPhoto,size:this.state.measuredSize,style:[C.imageCropper,this.state.measuredSize],onTransformDataChange:function(o){return t._transformData=o}}),c.createElement(I,{style:C.cropButtonTouchable,onPress:this._crop.bind(this)},c.createElement(v,{style:C.cropButton},c.createElement(z,{style:C.cropButtonLabel},"Crop"))),o)}},{key:"_renderCroppedImage",value:function(){return c.createElement(v,{style:C.container},c.createElement(z,null,"Here is the cropped image:"),c.createElement(f,{source:{uri:this.state.croppedImageURI},style:[C.imageCropper,this.state.measuredSize]}),c.createElement(I,{style:C.cropButtonTouchable,onPress:this._reset.bind(this)},c.createElement(v,{style:C.cropButton},c.createElement(z,{style:C.cropButtonLabel},"Try again"))))}},{key:"_crop",value:function(){var t=this;_.cropImage(this.state.randomPhoto.uri,this._transformData,function(o){return t.setState({croppedImageURI:o})},function(o){return t.setState({cropError:o})})}},{key:"_reset",value:function(){this.setState({randomPhoto:null,croppedImageURI:null,cropError:null}),this._fetchRandomPhoto()}}]),S})(c.Component),E=(function(t){function p(){return o(this,p),s(this,h(p).apply(this,arguments))}return l(p,t),n(p,[{key:"componentWillMount",value:function(){var t=this.props.image.width/this.props.size.width,o=this.props.image.height/this.props.size.height;this._horizontal=t>o,this._horizontal?this._scaledImageSize={width:this.props.image.width/o,height:this.props.size.height}:(this._scaledImageSize={width:this.props.size.width,height:this.props.image.height/t},this._scaledImageSize.width*=2,this._scaledImageSize.height*=2,this._horizontal=!0),this._contentOffset={x:(this._scaledImageSize.width-this.props.size.width)/2,y:(this._scaledImageSize.height-this.props.size.height)/2},this._maximumZoomScale=Math.min(this.props.image.width/this._scaledImageSize.width,this.props.image.height/this._scaledImageSize.height),this._minimumZoomScale=Math.max(this.props.size.width/this._scaledImageSize.width,this.props.size.height/this._scaledImageSize.height),this._updateTransformData(this._contentOffset,this._scaledImageSize,this.props.size)}},{key:"_onScroll",value:function(t){this._updateTransformData(t.nativeEvent.contentOffset,t.nativeEvent.contentSize,t.nativeEvent.layoutMeasurement)}},{key:"_updateTransformData",value:function(t,o,n){var s=t.x/o.width,h=t.y/o.height,l=n.width/o.width,c=n.height/o.height,p={offset:{x:this.props.image.width*s,y:this.props.image.height*h},size:{width:this.props.image.width*l,height:this.props.image.height*c}};this.props.onTransformDataChange&&this.props.onTransformDataChange(p)}},{key:"render",value:function(){return c.createElement(S,{alwaysBounceVertical:!0,automaticallyAdjustContentInsets:!1,contentOffset:this._contentOffset,decelerationRate:"fast",horizontal:this._horizontal,maximumZoomScale:this._maximumZoomScale,minimumZoomScale:this._minimumZoomScale,onMomentumScrollEnd:this._onScroll.bind(this),onScrollEndDrag:this._onScroll.bind(this),showsHorizontalScrollIndicator:!1,showsVerticalScrollIndicator:!1,style:this.props.style,scrollEventThrottle:16},c.createElement(f,{source:this.props.image,style:this._scaledImageSize}))}}]),p})(c.Component);e.framework='React',e.title='ImageEditor',e.description='Cropping and scaling with ImageEditor',e.examples=[{title:'Image Cropping',render:function(){return c.createElement(w,null)}}];var C=y.create({container:{flex:1,alignSelf:'stretch'},imageCropper:{alignSelf:'center',marginTop:12},cropButtonTouchable:{alignSelf:'center',marginTop:12},cropButton:{padding:12,backgroundColor:'blue',borderRadius:4},cropButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}})},426,[108,1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),u=r(d[5]),c=r(d[6]),y=(r(d[7]),c.Image),h=c.LayoutAnimation,v=c.StyleSheet,x=c.Text,w=c.View,f=(function(c){function v(){var n,s;t(this,v);for(var u=arguments.length,c=new Array(u),y=0;y<u;y++)c[y]=arguments[y];return(s=o(this,(n=l(v)).call.apply(n,[this].concat(c)))).state={viewStyle:{margin:20}},s.animateViewLayout=function(){h.configureNext(h.Presets.spring,function(){console.log('layout animation done.'),s.addWrapText()}),s.setState({viewStyle:{margin:s.state.viewStyle.margin>20?20:60}})},s.addWrapText=function(){s.setState({extraText:'  And a bunch more text to wrap around a few lines.'},s.changeContainer)},s.changeContainer=function(){s.setState({containerStyle:{width:280}})},s.onViewLayout=function(t){console.log('received view layout event\n',t.nativeEvent),s.setState({viewLayout:t.nativeEvent.layout})},s.onTextLayout=function(t){console.log('received text layout event\n',t.nativeEvent),s.setState({textLayout:t.nativeEvent.layout})},s.onImageLayout=function(t){console.log('received image layout event\n',t.nativeEvent),s.setState({imageLayout:t.nativeEvent.layout})},s}return s(v,c),n(v,[{key:"render",value:function(){var t=[p.view,this.state.viewStyle],n=this.state.textLayout||{width:'?',height:'?'},o=this.state.imageLayout||{x:'?',y:'?'};return u.createElement(w,{style:this.state.containerStyle},u.createElement(x,null,"layout events are called on mount and whenever layout is recalculated. Note that the layout event will typically be received",' ',u.createElement(x,{style:p.italicText},"before")," the layout has updated on screen, especially when using layout animations.",'  ',u.createElement(x,{style:p.pressText,onPress:this.animateViewLayout},"Press here to change layout.")),u.createElement(w,{ref:"view",onLayout:this.onViewLayout,style:t},u.createElement(y,{ref:"img",onLayout:this.onImageLayout,style:p.image,source:{uri:'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851561_767334496626293_1958532586_n.png'}}),u.createElement(x,null,"ViewLayout:",' ',JSON.stringify(this.state.viewLayout,null,'  ')+'\n\n'),u.createElement(x,{ref:"txt",onLayout:this.onTextLayout,style:p.text},"A simple piece of text.",this.state.extraText),u.createElement(x,null,'\n',"Text w/h: ",n.width,"/",n.height+'\n',"Image x/y: ",o.x,"/",o.y)))}}]),v})(u.Component),p=v.create({view:{padding:12,borderColor:'black',borderWidth:.5,backgroundColor:'transparent'},text:{alignSelf:'flex-start',borderColor:'rgba(0, 0, 255, 0.2)',borderWidth:.5},image:{width:50,height:50,marginBottom:10,alignSelf:'center'},pressText:{fontWeight:'bold'},italicText:{fontStyle:'italic'}});e.title='Layout Events',e.description="Examples that show how Layout events can be used to measure view size and position.",e.examples=[{title:'LayoutEventExample',render:function(){return u.createElement(f,null)}}]},427,[1,2,3,6,7,125,202,74]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),c=r(d[4]),u=r(d[5]),p=(r(d[6]),r(d[7])),s=p.Linking,h=p.StyleSheet,f=p.Text,w=p.TouchableOpacity,k=p.View,E=r(d[8]),y=(function(p){function h(){var n,c;t(this,h);for(var u=arguments.length,p=new Array(u),f=0;f<u;f++)p[f]=arguments[f];return(c=o(this,(n=l(h)).call.apply(n,[this].concat(p)))).handleClick=function(){s.canOpenURL(c.props.url).then(function(t){t?s.openURL(c.props.url):console.log("Don't know how to open URI: "+c.props.url)})},c}return c(h,p),n(h,[{key:"render",value:function(){return u.createElement(w,{onPress:this.handleClick},u.createElement(k,{style:L.button},u.createElement(f,{style:L.text},"Open ",this.props.url)))}}]),h})(u.Component),b=(function(p){function s(){return t(this,s),o(this,l(s).apply(this,arguments))}return c(s,p),n(s,[{key:"render",value:function(){return u.createElement(E,{title:"Open external URLs"},u.createElement(y,{url:'https://www.facebook.com'}),u.createElement(y,{url:'http://www.facebook.com'}),u.createElement(y,{url:'http://facebook.com'}),u.createElement(y,{url:'fb://notifications'}),u.createElement(y,{url:'geo:37.484847,-122.148386'}),u.createElement(y,{url:'tel:9876543210'}))}}]),s})(u.Component);b.title='Linking',b.description='Shows how to use Linking to open URLs.';var L=h.create({button:{padding:10,backgroundColor:'#3B5998',marginBottom:10},text:{color:'white'}});m.exports=b},428,[1,2,3,6,7,125,74,202,348]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),u=r(d[4]),c=r(d[5]),s=r(d[6]),h=r(d[7]),f=h.LayoutAnimation,y=h.StyleSheet,v=h.Text,w=h.View,E=h.TouchableOpacity,p=(function(h){function y(){var l,c;n(this,y);for(var s=arguments.length,h=new Array(s),f=0;f<s;f++)h[f]=arguments[f];return(c=o(this,(l=u(y)).call.apply(l,[this].concat(h)))).state={views:[]},c._onPressAddView=function(){c.setState(function(n){return{views:[].concat(t(n.views),[{}])}})},c._onPressRemoveView=function(){c.setState(function(t){return{views:t.views.slice(0,-1)}})},c}return c(y,h),l(y,[{key:"UNSAFE_componentWillUpdate",value:function(){f.easeInEaseOut()}},{key:"render",value:function(){var t=this.state.views.map(function(t,n){return s.createElement(w,{key:n,style:P.view},s.createElement(v,null,n))});return s.createElement(w,{style:P.container},s.createElement(E,{onPress:this._onPressAddView},s.createElement(w,{style:P.button},s.createElement(v,null,"Add view"))),s.createElement(E,{onPress:this._onPressRemoveView},s.createElement(w,{style:P.button},s.createElement(v,null,"Remove view"))),s.createElement(w,{style:P.viewContainer},t))}}]),y})(s.Component),b=function(){return s.createElement(w,{style:P.greenSquare},s.createElement(v,null,"Green square"))},C=function(){return s.createElement(w,{style:P.blueSquare},s.createElement(v,null,"Blue square"))},_=(function(t){function h(){var t,l;n(this,h);for(var c=arguments.length,s=new Array(c),y=0;y<c;y++)s[y]=arguments[y];return(l=o(this,(t=u(h)).call.apply(t,[this].concat(s)))).state={toggled:!1},l._onPressToggle=function(){f.easeInEaseOut(),l.setState(function(t){return{toggled:!t.toggled}})},l}return c(h,t),l(h,[{key:"render",value:function(){return s.createElement(w,{style:P.container},s.createElement(E,{onPress:this._onPressToggle},s.createElement(w,{style:P.button},s.createElement(v,null,"Toggle"))),s.createElement(w,{style:P.viewContainer},this.state.toggled?s.createElement(b,null):s.createElement(C,null)))}}]),h})(s.Component),T=(function(t){function h(){var t,l;n(this,h);for(var c=arguments.length,s=new Array(c),y=0;y<c;y++)s[y]=arguments[y];return(l=o(this,(t=u(h)).call.apply(t,[this].concat(s)))).state={width:200,height:100},l.timeout=null,l._clearTimeout=function(){null!==l.timeout&&(clearTimeout(l.timeout),l.timeout=null)},l._onPressToggle=function(){l._clearTimeout(),l.setState({width:150}),f.configureNext({duration:1e3,update:{type:f.Types.linear}}),l.timeout=setTimeout(function(){return l.setState({width:100})},500)},l}return c(h,t),l(h,[{key:"componentWillUnmount",value:function(){this._clearTimeout()}},{key:"render",value:function(){var t=this.state,n=t.width,l=t.height;return s.createElement(w,{style:P.container},s.createElement(E,{onPress:this._onPressToggle},s.createElement(w,{style:P.button},s.createElement(v,null,"Make box square"))),s.createElement(w,{style:[P.view,{width:n,height:l}]},s.createElement(v,null,n,"x",l)))}}]),h})(s.Component),P=y.create({container:{flex:1},button:{borderRadius:5,backgroundColor:'#eeeeee',padding:10,marginBottom:10},viewContainer:{flex:1,flexDirection:'row',flexWrap:'wrap'},view:{height:54,width:54,backgroundColor:'red',margin:8,alignItems:'center',justifyContent:'center'},greenSquare:{width:150,height:150,backgroundColor:'green',alignItems:'center',justifyContent:'center'},blueSquare:{width:150,height:150,backgroundColor:'blue',alignItems:'center',justifyContent:'center'}});e.title='Layout Animation',e.description='Layout animation',e.examples=[{title:'Add and remove views',render:function(){return s.createElement(p,null)}},{title:'Cross fade views',render:function(){return s.createElement(_,null)}},{title:'Layout update during animation',render:function(){return s.createElement(T,null)}}]},429,[14,1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),l=r(d[1]),n=r(d[2]),c=r(d[3]),s=r(d[4]),o=r(d[5]),E=r(d[6]),u=E.StyleSheet,z=E.Text,y=E.View,f=r(d[7]),p=r(d[8]),h=(function(E){function u(){return t(this,u),n(this,c(u).apply(this,arguments))}return s(u,E),l(u,[{key:"render",value:function(){var t=this.props.size||20,l=this.props.bgColor||'#527fe4';return o.createElement(y,{style:{borderRadius:t/2,backgroundColor:l,width:t,height:t,margin:1}})}}]),u})(o.Component),x=(function(E){function u(){return t(this,u),n(this,c(u).apply(this,arguments))}return s(u,E),l(u,[{key:"render",value:function(){return o.createElement(y,{style:[{flexDirection:'row',backgroundColor:'#f6f7f8',borderWidth:.5,borderColor:'#d6d7da',marginBottom:2},this.props.style]},this.props.children)}}]),u})(o.Component),b=(function(E){function u(){return t(this,u),n(this,c(u).apply(this,arguments))}return s(u,E),l(u,[{key:"render",value:function(){var t=[o.createElement(h,{bgColor:"#527fe4",key:"blue"}),o.createElement(h,{bgColor:"#D443E3",key:"violet"}),o.createElement(h,{bgColor:"#FF9049",key:"orange"}),o.createElement(h,{bgColor:"#FFE649",key:"yellow"}),o.createElement(h,{bgColor:"#7FE040",key:"green"})];return o.createElement(p,{title:this.props.navigator?null:'Layout'},o.createElement(f,{title:"Flex Direction"},o.createElement(z,null,"row"),o.createElement(x,{style:{flexDirection:'row'}},t),o.createElement(z,null,"row-reverse"),o.createElement(x,{style:{flexDirection:'row-reverse'}},t),o.createElement(z,null,"column"),o.createElement(x,{style:{flexDirection:'column'}},t),o.createElement(z,null,"column-reverse"),o.createElement(x,{style:{flexDirection:'column-reverse'}},t),o.createElement(y,{style:[C.overlay,{position:'absolute',top:15,left:160}]},o.createElement(z,null,'top: 15, left: 160'))),o.createElement(f,{title:"Justify Content - Main Direction"},o.createElement(z,null,"flex-start"),o.createElement(x,{style:{justifyContent:'flex-start'}},t),o.createElement(z,null,"center"),o.createElement(x,{style:{justifyContent:'center'}},t),o.createElement(z,null,"flex-end"),o.createElement(x,{style:{justifyContent:'flex-end'}},t),o.createElement(z,null,"space-between"),o.createElement(x,{style:{justifyContent:'space-between'}},t),o.createElement(z,null,"space-around"),o.createElement(x,{style:{justifyContent:'space-around'}},t)),o.createElement(f,{title:"Align Items - Other Direction"},o.createElement(z,null,"flex-start"),o.createElement(x,{style:{alignItems:'flex-start',height:30}},o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:8})),o.createElement(z,null,"center"),o.createElement(x,{style:{alignItems:'center',height:30}},o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:8})),o.createElement(z,null,"flex-end"),o.createElement(x,{style:{alignItems:'flex-end',height:30}},o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:10}),o.createElement(h,{size:20}),o.createElement(h,{size:17}),o.createElement(h,{size:12}),o.createElement(h,{size:15}),o.createElement(h,{size:8}))),o.createElement(f,{title:"Flex Wrap"},o.createElement(x,{style:{flexWrap:'wrap'}},'oooooooooooooooo'.split('').map(function(t,l){return o.createElement(h,{key:l})}))))}}]),u})(o.Component);b.title='Layout - Flexbox',b.description='Examples of using the flexbox API to layout views.',b.displayName='LayoutExample';var C=u.create({overlay:{backgroundColor:'#aaccff',borderRadius:10,borderWidth:.5,opacity:.5,padding:5}});m.exports=b},430,[1,2,3,6,7,125,202,348,350]);
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c.createElement(E,{onPress:this.onPress},c.createElement(f,null,c.createElement(f,null,c.createElement(y,null,"Native:")),c.createElement(f,{style:N.row},this.props.children(this.state.native)),c.createElement(f,null,c.createElement(y,null,"JavaScript:")),c.createElement(f,{style:N.row},this.props.children(this.state.js))))}}]),h})(c.Component),k=(function(p){function h(){var l,s;n(this,h);for(var c=arguments.length,p=new Array(c),f=0;f<c;f++)p[f]=arguments[f];return(s=o(this,(l=u(h)).call.apply(l,[this].concat(p)))).state={anim:new v.Value(0),progress:0},s._current=0,s._onPress=function(){s._current=s._current?0:1;var n={duration:1e3,toValue:s._current};v.timing(s.state.anim,t({},n,{useNativeDriver:!0})).start()},s}return s(h,p),l(h,[{key:"componentDidMount",value:function(){var t=this;this.state.anim.addListener(function(n){return t.setState({progress:n.value})})}},{key:"componentWillUnmount",value:function(){this.state.anim.removeAllListeners()}},{key:"render",value:function(){return c.createElement(E,{onPress:this._onPress},c.createElement(f,null,c.createElement(f,{style:N.row},c.createElement(v.View,{style:[N.block,{opacity:this.state.anim}]})),c.createElement(y,null,"Value: ",this.state.progress)))}}]),h})(c.Component),V=(function(t){function p(){var t,l;n(this,p);for(var s=arguments.length,c=new Array(s),f=0;f<s;f++)c[f]=arguments[f];return(l=o(this,(t=u(p)).call.apply(t,[this].concat(c)))).state={value:new v.Value(0)},l}return s(p,t),l(p,[{key:"componentDidMount",value:function(){v.loop(v.timing(this.state.value,{toValue:1,duration:5e3,useNativeDriver:!0})).start()}},{key:"render",value:function(){return c.createElement(f,{style:N.row},c.createElement(v.View,{style:[N.block,{opacity:this.state.value.interpolate({inputRange:[0,.5,1],outputRange:[0,1,0]})}]}))}}]),p})(c.Component),S=r(d[8]),A=(function(t){function p(){return n(this,p),o(this,u(p).apply(this,arguments))}return s(p,t),l(p,[{key:"render",value:function(){var t=this;return c.createElement(f,null,c.createElement(S,{initialValue:!1,label:"Force JS Stalls",onEnable:function(){t._stallInterval=setInterval(function(){var t=Date.now();for(console.warn('burn CPU');Date.now()-t<100;);},300)},onDisable:function(){clearInterval(t._stallInterval||0)}}),c.createElement(S,{initialValue:!1,label:"Track JS Stalls",onEnable:function(){r(d[9]).install({thresholdMS:25}),t.setState({busyTime:'<none>'}),r(d[9]).addHandler({onStall:function(n){var l=n.busyTime;return t.setState(function(t){return{busyTime:l,filteredStall:.97*(t.filteredStall||0)+.03*l}})}})},onDisable:function(){console.warn('Cannot disable yet....')}}),this.state&&c.createElement(y,null,"JS Stall filtered: "+Math.round(this.state.filteredStall)+", ","last: "+this.state.busyTime))}}]),p})(c.Component),C=(function(t){function p(){var t,l;n(this,p);for(var s=arguments.length,c=new Array(s),f=0;f<s;f++)c[f]=arguments[f];return(l=o(this,(t=u(p)).call.apply(t,[this].concat(c)))).state={scrollX:new v.Value(0)},l}return s(p,t),l(p,[{key:"render",value:function(){var t=this.state.scrollX.interpolate({inputRange:[0,200],outputRange:[1,0]});return c.createElement(f,null,c.createElement(v.View,{style:[N.block,{opacity:t}]}),c.createElement(v.ScrollView,{horizontal:!0,style:{height:100,marginTop:16},scrollEventThrottle:16,onScroll:v.event([{nativeEvent:{contentOffset:{x:this.state.scrollX}}}],{useNativeDriver:!0})},c.createElement(f,{style:{width:600,backgroundColor:'#eee',justifyContent:'center'}},c.createElement(y,null,"Scroll me!"))))}}]),p})(c.Component),D=(function(p){function h(){var t,l;n(this,h);for(var s=arguments.length,p=new Array(s),f=0;f<s;f++)p[f]=arguments[f];return(l=o(this,(t=u(h)).call.apply(t,[this].concat(p)))).state={native:new v.Value(0),toNative:new v.Value(0),js:new v.Value(0),toJS:new v.Value(0)},l.onPress=function(){var t=200*Math.random();l.state.toNative.setValue(t),l.state.toJS.setValue(t)},l.renderBlock=function(t,n){return[c.createElement(v.View,{key:"line",style:[N.line,{transform:[{translateX:n}]}]}),c.createElement(v.View,{key:"block",style:[N.block,{transform:[{translateX:t}]}]})]},l}return s(h,p),l(h,[{key:"componentDidMount",value:function(){var n={tension:20,friction:.5};v.spring(this.state.native,t({},n,{toValue:this.state.toNative,useNativeDriver:!0})).start(),v.spring(this.state.js,t({},n,{toValue:this.state.toJS,useNativeDriver:!1})).start()}},{key:"render",value:function(){return c.createElement(E,{onPress:this.onPress},c.createElement(f,null,c.createElement(f,null,c.createElement(y,null,"Native:")),c.createElement(f,{style:N.row},this.renderBlock(this.state.native,this.state.toNative)),c.createElement(f,null,c.createElement(y,null,"JavaScript:")),c.createElement(f,{style:N.row},this.renderBlock(this.state.js,this.state.toJS))))}}]),h})(c.Component),N=h.create({row:{padding:10,zIndex:1},block:{width:50,height:50,backgroundColor:'blue'},line:{position:'absolute',left:35,top:0,bottom:0,width:1,backgroundColor:'red'}});e.framework='React',e.title='Native Animated Example',e.description='Test out Native Animations',e.examples=[{title:'Multistage With Multiply and rotation',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:t.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})},{rotate:t.interpolate({inputRange:[0,.5,1],outputRange:['0deg','90deg','0deg']})}],opacity:v.multiply(t.interpolate({inputRange:[0,1],outputRange:[1,0]}),t.interpolate({inputRange:[0,1],outputRange:[.25,1]}))}]})})}},{title:'Multistage With Multiply',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:t.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})}],opacity:v.multiply(t.interpolate({inputRange:[0,1],outputRange:[1,0]}),t.interpolate({inputRange:[0,1],outputRange:[.25,1]}))}]})})}},{title:'Multistage With Subtract',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t.interpolate({inputRange:[0,1],outputRange:[0,200]})},{translateY:t.interpolate({inputRange:[0,.5,1],outputRange:[0,50,0]})}],opacity:v.subtract(t.interpolate({inputRange:[0,1],outputRange:[1,1]}),t.interpolate({inputRange:[0,.5,1],outputRange:[0,.5,0]}))}]})})}},{title:'Scale interpolation with clamping',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{scale:t.interpolate({inputRange:[0,.5],outputRange:[1,1.4],extrapolateRight:'clamp'})}]}]})})}},{title:'Opacity with delay',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3,delay:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{opacity:t}]})})}},{title:'Rotate interpolation',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{rotate:t.interpolate({inputRange:[0,1],outputRange:['0deg','90deg']})}]}]})})}},{title:'translateX => Animated.spring (bounciness/speed)',render:function(){return c.createElement(b,{type:"spring",config:{bounciness:0}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t.interpolate({inputRange:[0,1],outputRange:[0,100]})}]}]})})}},{title:'translateX => Animated.spring (stiffness/damping/mass)',render:function(){return c.createElement(b,{type:"spring",config:{stiffness:1e3,damping:500,mass:3}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t.interpolate({inputRange:[0,1],outputRange:[0,100]})}]}]})})}},{title:'translateX => Animated.decay',render:function(){return c.createElement(b,{type:"decay",config:{velocity:.5},reverseConfig:{velocity:-.5}},function(t){return c.createElement(v.View,{style:[N.block,{transform:[{translateX:t}]}]})})}},{title:'Drive custom property',render:function(){return c.createElement(b,{type:"timing",config:{duration:1e3}},function(t){return c.createElement(R,{style:{},value:t})})}},{title:'Animated value listener',render:function(){return c.createElement(k,null)}},{title:'Animated loop',render:function(){return c.createElement(V,null)}},{title:'Animated events',render:function(){return c.createElement(C,null)}},{title:'Animated Tracking - tap me many times',render:function(){return c.createElement(D,null)}},{title:'Internal Settings',render:function(){return c.createElement(A,null)}}]},431,[10,1,2,3,6,7,125,202,432,434]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),u=r(d[4]),l=r(d[5]),c=r(d[6]),p=r(d[7]),f=r(d[8]),h=r(d[9]),v=r(d[10]),y=(function(c){function h(){return t(this,h),s(this,o(h).apply(this,arguments))}return u(h,c),n(h,[{key:"UNSAFE_componentWillReceiveProps",value:function(t){var n=this.props,s=n.onEnable,o=n.onDisable,u=n.persister;t.persister.state!==u.state&&(t.persister.state?s():o())}},{key:"render",value:function(){var t=this.props,n=t.label,s=t.persister;return l.createElement(v,{style:b.row},l.createElement(f,null,n),l.createElement(p,{value:s.state,onValueChange:function(t){s.setState(function(){return t})}}))}}]),h})(l.Component),b=c.create({row:{padding:10,flexDirection:'row',justifyContent:'space-between'}});y=h.createContainer(y,{cacheKeySuffix:function(t){return'Switch:'+t.label},getInitialState:function(t){return t.initialValue}}),m.exports=y},432,[1,2,3,6,7,139,140,309,173,433,159]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),c=r(d[3]),u=r(d[4]),o=r(d[5]),p=r(d[6]),v=r(d[7]);var l={createContainer:function(l,f){var h,S;return S=h=(function(h){function S(){var t,s;n(this,S);for(var o=arguments.length,v=new Array(o),l=0;l<o;l++)v[l]=arguments[l];return(s=c(this,(t=u(S)).call.apply(t,[this].concat(v)))).state={value:f.getInitialState(s.props)},s._cacheKey="RNTester:"+(f.version||'v1')+":"+f.cacheKeySuffix(s.props),s._passSetState=function(t){s.setState(function(n){var c=t(n.value);return p.setItem(s._cacheKey,JSON.stringify(c)),{value:c}})},s}return o(S,h),s(S,[{key:"componentDidMount",value:function(){var t=this;p.getItem(this._cacheKey,function(n,s){!n&&s&&t.setState({value:JSON.parse(s)})})}},{key:"render",value:function(){return v.createElement(l,t({},this.props,{persister:{state:this.state.value,setState:this._passSetState}}))}}]),S})(v.Component),h.displayName="RNTesterStatePersister("+(l.displayName||l.name)+")",S}};m.exports=l},433,[41,1,2,3,6,7,194,139]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o={getStats:function(){return{stallCount:c,totalStallTime:u,longestStall:f,acceptableBusyTime:s}},reset:function(){t('JSEventLoopWatchdog: reset'),u=0,c=0,f=0,h=n()},addHandler:function(t){v.push(t)},install:function(o){var S=o.thresholdMS;s=S,l||(l=!0,h=n(),(function o(){var s=n(),l=s-h;if(l>=S){var p=l-S;c++,u+=p,f=Math.max(f,p);var E="JSEventLoopWatchdog: JS thread busy for "+l+"ms. "+u+"ms in "+c+" stalls so far. ";v.forEach(function(t){E+=t.onStall({lastInterval:h,busyTime:l})||''}),t(E)}v.forEach(function(t){t.onIterate&&t.onIterate()}),h=s,setTimeout(o,S/5)})())}},s=0,l=!1,u=0,c=0,f=0,h=0,v=[];m.exports=o},434,[36,75]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),c=r(d[3]),s=r(d[4]),l=r(d[5]),u=r(d[6]),h=u.NetInfo,f=u.Text,v=u.View,p=u.TouchableWithoutFeedback,C=(function(u){function p(){var t,s;n(this,p);for(var l=arguments.length,u=new Array(l),h=0;h<l;h++)u[h]=arguments[h];return(s=o(this,(t=c(p)).call.apply(t,[this].concat(u)))).state={connectionInfoHistory:[]},s._handleConnectionInfoChange=function(n){var t=s.state.connectionInfoHistory.slice();t.push(n),s.setState({connectionInfoHistory:t})},s}return s(p,u),t(p,[{key:"componentDidMount",value:function(){h.addEventListener('change',this._handleConnectionInfoChange)}},{key:"componentWillUnmount",value:function(){h.removeEventListener('change',this._handleConnectionInfoChange)}},{key:"render",value:function(){return l.createElement(v,null,l.createElement(f,null,JSON.stringify(this.state.connectionInfoHistory)))}}]),p})(l.Component),y=(function(u){function p(){var t,s;n(this,p);for(var l=arguments.length,u=new Array(l),h=0;h<l;h++)u[h]=arguments[h];return(s=o(this,(t=c(p)).call.apply(t,[this].concat(u)))).state={connectionInfo:null},s._handleConnectionInfoChange=function(n){s.setState({connectionInfo:n})},s}return s(p,u),t(p,[{key:"componentDidMount",value:function(){var n=this;h.addEventListener('change',this._handleConnectionInfoChange),h.fetch().done(function(t){n.setState({connectionInfo:t})})}},{key:"componentWillUnmount",value:function(){h.removeEventListener('change',this._handleConnectionInfoChange)}},{key:"render",value:function(){return l.createElement(v,null,l.createElement(f,null,this.state.connectionInfo))}}]),p})(l.Component),E=(function(u){function p(){var t,s;n(this,p);for(var l=arguments.length,u=new Array(l),h=0;h<l;h++)u[h]=arguments[h];return(s=o(this,(t=c(p)).call.apply(t,[this].concat(u)))).state={isConnected:null},s._handleConnectivityChange=function(n){s.setState({isConnected:n})},s}return s(p,u),t(p,[{key:"componentDidMount",value:function(){var n=this;h.isConnected.addEventListener('change',this._handleConnectivityChange),h.isConnected.fetch().done(function(t){n.setState({isConnected:t})})}},{key:"componentWillUnmount",value:function(){h.isConnected.removeEventListener('change',this._handleConnectivityChange)}},{key:"render",value:function(){return l.createElement(v,null,l.createElement(f,null,this.state.isConnected?'Online':'Offline'))}}]),p})(l.Component),I=(function(u){function C(){var t,s;n(this,C);for(var l=arguments.length,u=new Array(l),f=0;f<l;f++)u[f]=arguments[f];return(s=o(this,(t=c(C)).call.apply(t,[this].concat(u)))).state={isConnectionExpensive:null},s._checkIfExpensive=function(){h.isConnectionExpensive().then(function(n){s.setState({isConnectionExpensive:n})})},s}return s(C,u),t(C,[{key:"render",value:function(){return l.createElement(v,null,l.createElement(p,{onPress:this._checkIfExpensive},l.createElement(v,null,l.createElement(f,null,"Click to see if connection is expensive:",!0===this.state.isConnectionExpensive?'Expensive':!1===this.state.isConnectionExpensive?'Not expensive':'Unknown'))))}}]),C})(l.Component);e.title='NetInfo',e.description='Monitor network status',e.examples=[{title:'NetInfo.isConnected',description:'Asynchronously load and observe connectivity',render:function(){return l.createElement(E,null)}},{title:'NetInfo.update',description:'Asynchronously load and observe connectionInfo',render:function(){return l.createElement(y,null)}},{title:'NetInfo.updateHistory',description:'Observed updates to connectionInfo',render:function(){return l.createElement(C,null)}},{platform:'android',title:'NetInfo.isConnectionExpensive (Android)',description:'Asynchronously check isConnectionExpensive',render:function(){return l.createElement(I,null)}}]},435,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),s=r(d[3]),c=r(d[4]),l=r(d[5]),u=r(d[6]),h=u.DeviceEventEmitter,p=u.Text,f=u.View,v=(function(u){function v(){var t,c;n(this,v);for(var l=arguments.length,u=new Array(l),h=0;h<l;h++)u[h]=arguments[h];return(c=o(this,(t=s(v)).call.apply(t,[this].concat(u)))).state={currentOrientation:'',orientationDegrees:0,isLandscape:!1},c._onOrientationChange=function(n){c.setState({currentOrientation:n.name,orientationDegrees:n.rotationDegrees,isLandscape:n.isLandscape})},c}return c(v,u),t(v,[{key:"componentDidMount",value:function(){this._orientationSubscription=h.addListener('namedOrientationDidChange',this._onOrientationChange)}},{key:"componentWillUnmount",value:function(){this._orientationSubscription.remove()}},{key:"render",value:function(){return l.createElement(f,null,l.createElement(p,null,JSON.stringify(this.state)))}}]),v})(l.Component);e.title='OrientationChangeExample',e.description='listening to orientation changes',e.examples=[{title:'OrientationChangeExample',description:'listening to device orientation changes',render:function(){return l.createElement(v,null)}}]},436,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var n=r(d[0]),t=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),p=r(d[5]),u=r(d[6]),c=r(d[7]),h=c.PanResponder,_=c.StyleSheet,v=c.View,S=(function(c){function _(){var n,o;t(this,_);for(var p=arguments.length,u=new Array(p),c=0;c<p;c++)u[c]=arguments[c];return(o=l(this,(n=s(_)).call.apply(n,[this].concat(u))))._handleStartShouldSetPanResponder=function(n,t){return!0},o._handleMoveShouldSetPanResponder=function(n,t){return!0},o._handlePanResponderGrant=function(n,t){o._highlight()},o._handlePanResponderMove=function(n,t){o._circleStyles.style.left=o._previousLeft+t.dx,o._circleStyles.style.top=o._previousTop+t.dy,o._updateNativeStyles()},o._handlePanResponderEnd=function(n,t){o._unHighlight(),o._previousLeft+=t.dx,o._previousTop+=t.dy},o._panResponder=h.create({onStartShouldSetPanResponder:o._handleStartShouldSetPanResponder,onMoveShouldSetPanResponder:o._handleMoveShouldSetPanResponder,onPanResponderGrant:o._handlePanResponderGrant,onPanResponderMove:o._handlePanResponderMove,onPanResponderRelease:o._handlePanResponderEnd,onPanResponderTerminate:o._handlePanResponderEnd}),o._previousLeft=0,o._previousTop=0,o._circleStyles={style:{}},o.circle=null,o}return p(_,c),o(_,[{key:"UNSAFE_componentWillMount",value:function(){this._previousLeft=20,this._previousTop=84,this._circleStyles={style:{left:this._previousLeft,top:this._previousTop,backgroundColor:'green'}}}},{key:"componentDidMount",value:function(){this._updateNativeStyles()}},{key:"_highlight",value:function(){this._circleStyles.style.backgroundColor='blue',this._updateNativeStyles()}},{key:"_unHighlight",value:function(){this._circleStyles.style.backgroundColor='green',this._updateNativeStyles()}},{key:"_updateNativeStyles",value:function(){this.circle&&this.circle.setNativeProps(this._circleStyles)}},{key:"render",value:function(){var t=this;return u.createElement(v,{style:y.container},u.createElement(v,n({ref:function(n){t.circle=n},style:y.circle},this._panResponder.panHandlers)))}}]),_})(u.Component);S.title='PanResponder Sample',S.description='Shows the Use of PanResponder to provide basic gesture handling';var y=_.create({circle:{width:80,height:80,borderRadius:40,position:'absolute',left:0,top:0},container:{flex:1,paddingTop:64}});m.exports=S},437,[41,1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),c=r(d[4]),l=r(d[5]),u=r(d[6]),h=r(d[7]),E=h.PermissionsAndroid,S=h.Picker,p=h.StyleSheet,P=h.Text,A=h.TouchableWithoutFeedback,f=h.View,I=S.Item;e.displayName=void 0,e.framework='React',e.title='PermissionsAndroid',e.description='Permissions example for API 23+.';var x=(function(h){function p(){var n,l;s(this,p);for(var u=arguments.length,h=new Array(u),S=0;S<u;S++)h[S]=arguments[S];return(l=o(this,(n=c(p)).call.apply(n,[this].concat(h)))).state={permission:E.PERMISSIONS.CAMERA,hasPermission:'Not Checked'},l._onSelectPermission=function(t){l.setState({permission:t})},l._checkPermission=function(){var s;return t.async(function(n){for(;;)switch(n.prev=n.next){case 0:return n.next=2,t.awrap(E.check(l.state.permission));case 2:s=n.sent,l.setState({hasPermission:(s?'Granted':'Revoked')+' for '+l.state.permission});case 4:case"end":return n.stop()}})},l._requestPermission=function(){var s;return t.async(function(n){for(;;)switch(n.prev=n.next){case 0:return n.next=2,t.awrap(E.request(l.state.permission,{title:'Permission Explanation',message:'The app needs the following permission '+l.state.permission+' because of reasons. Please approve.'}));case 2:s=n.sent,l.setState({hasPermission:s+' for '+l.state.permission});case 4:case"end":return n.stop()}})},l}return l(p,h),n(p,[{key:"render",value:function(){return u.createElement(f,{style:R.container},u.createElement(P,{style:R.text},"Permission Name:"),u.createElement(S,{style:R.picker,selectedValue:this.state.permission,onValueChange:this._onSelectPermission.bind(this)},u.createElement(I,{label:E.PERMISSIONS.CAMERA,value:E.PERMISSIONS.CAMERA}),u.createElement(I,{label:E.PERMISSIONS.READ_CALENDAR,value:E.PERMISSIONS.READ_CALENDAR}),u.createElement(I,{label:E.PERMISSIONS.ACCESS_FINE_LOCATION,value:E.PERMISSIONS.ACCESS_FINE_LOCATION})),u.createElement(A,{onPress:this._checkPermission},u.createElement(f,null,u.createElement(P,{style:[R.touchable,R.text]},"Check Permission"))),u.createElement(P,{style:R.text},"Permission Status: ",this.state.hasPermission),u.createElement(A,{onPress:this._requestPermission},u.createElement(f,null,u.createElement(P,{style:[R.touchable,R.text]},"Request Permission"))))}}]),p})(u.Component);e.examples=[{title:'Permissions Example',description:'Short example of how to use the runtime permissions API introduced in Android M.',render:function(){return u.createElement(x,null)}}];var R=p.create({container:{flex:1,backgroundColor:'white'},text:{margin:10},touchable:{color:'#007AFF'},picker:{flex:1}})},438,[108,1,2,3,6,7,125,202]);
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Check them out to see what they look like in RTL layout.")},u._linearTap=function(l,o){u.setState({toggleStatus:n({},u.state.toggleStatus,t({},l,!u.state.toggleStatus[l]))});var c=D[0]/B/2+10,s=(P?-1:1)*(u.state.windowWidth/2-c);R.timing(u.state.linear,{toValue:u.state.toggleStatus[l]?s:0,duration:2e3,useNativeDriver:!0}).start()},u._onPanResponderGrant=function(t,n){u.state.pan.stopAnimation(function(t){u.state.pan.setOffset(t)})},u._onPanResponderEnd=function(t,n){u.state.pan.flattenOffset(),R.sequence([R.decay(u.state.pan,{velocity:{x:n.vx,y:n.vy},deceleration:.995}),R.spring(u.state.pan,{toValue:{x:0,y:0}})]).start()};var E=new R.ValueXY;return u._panResponder=T.create({onStartShouldSetPanResponder:function(){return!0},onPanResponderGrant:u._onPanResponderGrant,onPanResponderMove:R.event([null,{dx:E.x,dy:E.y}]),onPanResponderRelease:u._onPanResponderEnd,onPanResponderTerminate:u._onPanResponderEnd}),u.state={toggleStatus:{},pan:E,linear:new R.Value(0),isRTL:P,windowWidth:0},u}return u(f,h),o(f,[{key:"render",value:function(){return E.createElement(p,{style:[Q.container,null],onLayout:this._onLayout},E.createElement(v,{title:'Right-to-Left (RTL) UI Layout'},E.createElement(A,{title:'Current Layout Direction'},E.createElement(W,{style:Q.directionBox},E.createElement(x,{style:Q.directionText},this.state.isRTL?'Right-to-Left':'Left-to-Right'))),E.createElement(A,{title:'Quickly Test RTL Layout'},E.createElement(W,{style:Q.flexDirectionRow},E.createElement(x,{style:Q.switchRowTextView},"forceRTL"),E.createElement(W,{style:Q.switchRowSwitchView},E.createElement(C,{onValueChange:this._onDirectionChange,style:Q.rightAlignStyle,value:this.state.isRTL})))),E.createElement(A,{title:'A Simple List Item Layout'},E.createElement(W,{style:Q.list},E.createElement(_,{imageSource:r(d[13])}),E.createElement(_,{imageSource:r(d[12])}))),E.createElement(I,{title:'Default Text Alignment',description:"In iOS/macOS, it depends on active language. In Android, it depends on the text content.",style:Q.fontSizeSmall}),E.createElement(I,{title:"Using textAlign: 'left'",description:"In iOS/macOS/Android, text alignment flips regardless of languages or text content.",style:[Q.fontSizeSmall,Q.textAlignLeft]}),E.createElement(I,{title:"Using textAlign: 'right'",description:"In iOS/macOS/Android, text alignment flips regardless of languages or text content.",style:[Q.fontSizeSmall,Q.textAlignRight]}),E.createElement(A,{title:'Working With Icons'},E.createElement(W,{style:Q.flexDirectionRow},E.createElement(W,null,E.createElement(S,{source:r(d[13]),style:Q.image}),E.createElement(x,{style:Q.fontSizeExtraSmall},"Without directional meaning")),E.createElement(W,{style:Q.rightAlignStyle},E.createElement(S,{source:r(d[12]),style:[Q.image,Q.withRTLStyle]}),E.createElement(x,{style:Q.fontSizeExtraSmall},"With directional meaning")))),E.createElement(A,{title:'Controlling Animation',description:'Animation direction according to layout'},E.createElement(W,{style:Q.view},E.createElement(z,{onPress:this._linearTap,imgStyle:{transform:[{translateX:this.state.linear},{scaleX:P?-1:1}]}}))),E.createElement(U,null),E.createElement(X,null),E.createElement(G,null),E.createElement(M,null),E.createElement(j,null),E.createElement(q,null),E.createElement(F,null)))}}]),f})(E.Component);N.title='RTLExample',N.description='Examples to show how to apply components to RTL layout.';var Q=L.create({container:{backgroundColor:'#e9eaed',paddingTop:15},directionBox:{flex:1,backgroundColor:'#f8f8f8',borderWidth:.5,borderColor:'black'},directionText:{padding:10,fontSize:16,textAlign:'center',fontWeight:'bold'},switchRowTextView:{flex:1,marginBottom:5,marginTop:5,textAlign:'center'},switchRowSwitchView:{flex:3},rightAlignStyle:{right:10,position:'absolute'},list:{height:120,marginBottom:5,borderTopWidth:.5,borderLeftWidth:.5,borderRightWidth:.5,borderColor:'#e5e5e5'},row:{height:60,flexDirection:'row',borderBottomWidth:.5,borderColor:'#e5e5e5'},column1:{width:60},column2:{flex:2.5,padding:6},column3:{flex:1.5},icon:{width:48,height:48,margin:6,borderWidth:.5,borderColor:'#e5e5e5'},withRTLStyle:{transform:[{scaleX:P?-1:1}]},image:{left:30,width:48,height:48},img:{width:D[0]/B,height:D[1]/B},view:{flex:1},block:{padding:10,alignItems:'center'},smallButton:{top:18,borderRadius:5,height:24,width:64,backgroundColor:'#e5e5e5',justifyContent:'center',alignItems:'center'},fontSizeSmall:{fontSize:10},fontSizeExtraSmall:{fontSize:8},textAlignLeft:{textAlign:'left'},textAlignRight:{textAlign:'right'},textBox:{width:28},flexDirectionRow:{flexDirection:'row'},bold:{fontWeight:'bold'},rtlToggler:{color:'gray',padding:8,textAlign:'center',fontWeight:'500'}});m.exports=N},440,[11,10,1,2,3,6,7,125,202,74,350,348,370,361]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),l=r(d[3]),o=r(d[4]),h=r(d[5]),u=r(d[6]),c=r(d[7]),p=c.StyleSheet,v=c.View,y=c.Text,b=c.TouchableHighlight,f=c.Share;e.framework='React',e.title='Share',e.description='Share data with other Apps.',e.examples=[{title:'Share Text Content',render:function(){return u.createElement(w,null)}}];var w=(function(c){function p(s){var h;return t(this,p),(h=n(this,l(p).call(this,s)))._shareMessage=h._shareMessage.bind(o(h)),h._shareText=h._shareText.bind(o(h)),h._showResult=h._showResult.bind(o(h)),h.state={result:''},h}return h(p,c),s(p,[{key:"render",value:function(){return u.createElement(v,null,u.createElement(b,{style:_.wrapper,onPress:this._shareMessage},u.createElement(v,{style:_.button},u.createElement(y,null,"Click to share message"))),u.createElement(b,{style:_.wrapper,onPress:this._shareText},u.createElement(v,{style:_.button},u.createElement(y,null,"Click to share message, URL and title"))),u.createElement(y,null,this.state.result))}},{key:"_shareMessage",value:function(){var t=this;f.share({message:'React Native | A framework for building native apps using React'}).then(this._showResult).catch(function(s){return t.setState({result:'error: '+s.message})})}},{key:"_shareText",value:function(){var t=this;f.share({message:'A framework for building native apps using React',url:'http://facebook.github.io/react-native/',title:'React Native'},{subject:'A subject to go in the email heading',dialogTitle:'Share React Native website',excludedActivityTypes:['com.apple.UIKit.activity.PostToTwitter'],tintColor:'green'}).then(this._showResult).catch(function(s){return t.setState({result:'error: '+s.message})})}},{key:"_showResult",value:function(t){t.action===f.sharedAction?t.activityType?this.setState({result:'shared with an activityType: '+t.activityType}):this.setState({result:'shared'}):t.action===f.dismissedAction&&this.setState({result:'dismissed'})}}]),p})(u.Component),_=p.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}})},441,[1,2,3,6,5,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),c=r(d[3]),o=r(d[4]),l=r(d[5]),h=r(d[6]),p=r(d[7]),u=p.TimePickerAndroid,k=p.StyleSheet,x=p.Text,T=p.TouchableWithoutFeedback,E=r(d[8]),f=r(d[9]),P=(function(p){function k(){var n,l;s(this,k);for(var h=arguments.length,p=new Array(h),x=0;x<h;x++)p[x]=arguments[x];return(l=c(this,(n=o(k)).call.apply(n,[this].concat(p)))).state={isoFormatText:'pick a time (24-hour format)',presetHour:4,presetMinute:4,presetText:'pick a time, default: 4:04AM',simpleText:'pick a time',clockText:'pick a time',spinnerText:'pick a time',defaultText:'pick a time'},l.showPicker=function(s,n){var c,o,h,p,k;return t.async(function(x){for(;;)switch(x.prev=x.next){case 0:return x.prev=0,x.next=3,t.awrap(u.open(n));case 3:c=x.sent,o=c.action,h=c.minute,p=c.hour,k={},o===u.timeSetAction?(k[s+'Text']=w(p,h),k[s+'Hour']=p,k[s+'Minute']=h):o===u.dismissedAction&&(k[s+'Text']='dismissed'),l.setState(k),x.next=15;break;case 12:x.prev=12,x.t0=x.catch(0),console.warn("Error in example '"+s+"': ",x.t0.message);case 15:case"end":return x.stop()}},null,null,[[0,12]])},l}return l(k,p),n(k,[{key:"render",value:function(){return h.createElement(f,{title:"TimePickerAndroid"},h.createElement(E,{title:"Simple time picker"},h.createElement(T,{onPress:this.showPicker.bind(this,'simple',{})},h.createElement(x,{style:y.text},this.state.simpleText))),h.createElement(E,{title:"Simple clock time picker"},h.createElement(T,{onPress:this.showPicker.bind(this,'clock',{mode:'clock'})},h.createElement(x,{style:y.text},this.state.clockText))),h.createElement(E,{title:"Simple spinner time picker"},h.createElement(T,{onPress:this.showPicker.bind(this,'spinner',{mode:'spinner'})},h.createElement(x,{style:y.text},this.state.spinnerText))),h.createElement(E,{title:"Simple default time picker"},h.createElement(T,{onPress:this.showPicker.bind(this,'default',{mode:'default'})},h.createElement(x,{style:y.text},this.state.defaultText))),h.createElement(E,{title:"Time picker with pre-set time"},h.createElement(T,{onPress:this.showPicker.bind(this,'preset',{hour:this.state.presetHour,minute:this.state.presetMinute})},h.createElement(x,{style:y.text},this.state.presetText))),h.createElement(E,{title:"Time picker with 24-hour time format"},h.createElement(T,{onPress:this.showPicker.bind(this,'isoFormat',{hour:this.state.isoFormatHour,minute:this.state.isoFormatMinute,is24Hour:!0})},h.createElement(x,{style:y.text},this.state.isoFormatText))))}}]),k})(h.Component);function w(t,s){return t+':'+(s<10?'0'+s:s)}P.title='TimePickerAndroid',P.description='Standard Android time picker dialog';var y=k.create({text:{color:'black'}});m.exports=P},442,[108,1,2,3,6,7,125,202,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),s=r(d[3]),u=r(d[4]),o=r(d[5]),c=r(d[6]),_=(c.AlertIOS,c.AlertMacOS,c.Platform,c.ToastAndroid),f=c.Text,h=c.View,p=r(d[7]),I=r(d[8]);function T(t){for(var n=I();I()<n+t;);}var v=(function(c){function _(){var n,u;t(this,_);for(var o=arguments.length,c=new Array(o),f=0;f<o;f++)c[f]=arguments[f];return(u=l(this,(n=s(_)).call.apply(n,[this].concat(c)))).state={message:'-'},u._idleTimer=null,u._iters=0,u._runWithTimeout=function(){null!=u._idleTimer&&(cancelIdleCallback(u._idleTimer),u._idleTimer=null),u._idleTimer=requestIdleCallback(function(t){u.setState({message:t.timeRemaining()+"ms remaining in frame, it did timeout: "+(t.didTimeout?'yes':'no')})},{timeout:100}),T(100)},u._runBackground=function(){null!=u._idleTimer&&(cancelIdleCallback(u._idleTimer),u._idleTimer=null);u._idleTimer=requestIdleCallback(function t(n){for(;n.timeRemaining()>5;)T(5),u.setState({message:"Burned CPU for 5ms "+u._iters+++" times, "+n.timeRemaining()+"ms remaining in frame"});u._idleTimer=requestIdleCallback(t)})},u._stopBackground=function(){u._iters=0,null!=u._idleTimer&&(cancelIdleCallback(u._idleTimer),u._idleTimer=null)},u}return u(_,c),n(_,[{key:"componentWillUnmount",value:function(){null!=this._idleTimer&&(cancelIdleCallback(this._idleTimer),this._idleTimer=null)}},{key:"render",value:function(){return o.createElement(h,null,o.createElement(p,{onPress:this._run.bind(this,!1)},"Run requestIdleCallback"),o.createElement(p,{onPress:this._run.bind(this,!0)},"Burn CPU inside of requestIdleCallback"),o.createElement(p,{onPress:this._runWithTimeout},"Run requestIdleCallback with timeout option"),o.createElement(p,{onPress:this._runBackground},"Run background task"),o.createElement(p,{onPress:this._stopBackground},"Stop background task"),o.createElement(f,null,this.state.message))}},{key:"_run",value:function(t){var n=this;null!=this._idleTimer&&(cancelIdleCallback(this._idleTimer),this._idleTimer=null),this._idleTimer=requestIdleCallback(function(l){var s='';t&&(T(10),s='Burned CPU for 10ms,'),n.setState({message:s+" "+l.timeRemaining()+"ms remaining in frame"})})}}]),_})(o.Component),E=(function(c){function f(){var n,u;t(this,f);for(var o=arguments.length,c=new Array(o),h=0;h<o;h++)c[h]=arguments[h];return(u=l(this,(n=s(f)).call.apply(n,[this].concat(c))))._ii=0,u._iters=0,u._start=0,u._timerId=null,u._rafId=null,u._intervalId=null,u._immediateId=null,u._timerFn=null,u._run=function(){if(!u._start){var t=new Date;u._start=t.getTime(),u._iters=100,u._ii=0,'setTimeout'===u.props.type?(void 0!==u.props.dt&&u.props.dt<1?u._iters=5e3:void 0!==u.props.dt&&u.props.dt>20&&(u._iters=10),u._timerFn=function(){u._timerId=setTimeout(u._run,u.props.dt)}):'requestAnimationFrame'===u.props.type?u._timerFn=function(){u._rafId=requestAnimationFrame(u._run)}:'setImmediate'===u.props.type?(u._iters=5e3,u._timerFn=function(){u._immediateId=setImmediate(u._run)}):'setInterval'===u.props.type&&(u._iters=30,u._timerFn=null,u._intervalId=setInterval(u._run,u.props.dt))}if(u._ii>=u._iters&&null==u._intervalId){var n=(new Date).getTime()-u._start,l='Finished '+u._ii+' '+u.props.type+" calls.\nElapsed time: "+n+' ms\n'+n/u._ii+' ms / iter';return console.log(l),_.show(l,_.SHORT),u._start=0,void u.forceUpdate(function(){u._ii=0})}u._ii++,u._ii%(u._iters/5)==0&&u.forceUpdate(),u._timerFn&&(u._timerId=u._timerFn())},u.clear=function(){null!=u._intervalId&&(clearInterval(u._intervalId),u._intervalId=null,u._iters=u._ii,u._run())},u}return u(f,c),n(f,[{key:"render",value:function(){var t='fn'+(void 0!==this.props.dt?', '+this.props.dt:'');return o.createElement(p,{onPress:this._run},"Measure: ",this.props.type,"(",t,") - ",this._ii||0)}},{key:"componentWillUnmount",value:function(){null!=this._timerId&&(clearTimeout(this._timerId),this._timerId=null),null!=this._rafId&&(cancelAnimationFrame(this._rafId),this._rafId=null),null!=this._immediateId&&(clearImmediate(this._immediateId),this._immediateId=null),null!=this._intervalId&&(clearInterval(this._intervalId),this._intervalId=null)}}]),f})(o.Component);e.framework='React',e.title='Timers',e.description='A demonstration of Timers in React Native.',e.examples=[{title:'this.setTimeout(fn, t)',description:"Execute function fn t milliseconds in the future.  If t === 0, it will be enqueued immediately in the next event loop.  Larger values will fire on the closest frame.",render:function(){return o.createElement(h,null,o.createElement(E,{type:"setTimeout",dt:0}),o.createElement(E,{type:"setTimeout",dt:1}),o.createElement(E,{type:"setTimeout",dt:100}))}},{title:'this.requestAnimationFrame(fn)',description:'Execute function fn on the next frame.',render:function(){return o.createElement(h,null,o.createElement(E,{type:"requestAnimationFrame"}))}},{title:'this.requestIdleCallback(fn)',description:'Execute function fn on the next JS frame that has idle time',render:function(){return o.createElement(h,null,o.createElement(v,null))}},{title:'this.setImmediate(fn)',description:'Execute function fn at the end of the current JS event loop.',render:function(){return o.createElement(h,null,o.createElement(E,{type:"setImmediate"}))}},{title:'this.setInterval(fn, t)',description:"Execute function fn every t milliseconds until cancelled or component is unmounted.",render:function(){var c=(function(c){function _(){var n,u;t(this,_);for(var c=arguments.length,f=new Array(c),I=0;I<c;I++)f[I]=arguments[I];return(u=l(this,(n=s(_)).call.apply(n,[this].concat(f)))).state={showTimer:!0},u._renderTimer=function(){return o.createElement(h,null,o.createElement(E,{ref:function(t){return u._timerTester=t},dt:25,type:"setInterval"}),o.createElement(p,{onPress:function(){return u._timerTester&&u._timerTester.clear()}},"Clear interval"))},u._toggleTimer=function(){u.setState({showTimer:!u.state.showTimer})},u}return u(_,c),n(_,[{key:"render",value:function(){return o.createElement(h,null,this.state.showTimer&&this._renderTimer(),o.createElement(p,{onPress:this._toggleTimer},this.state.showTimer?'Unmount timer':'Mount new timer'))}}]),_})(o.Component);return o.createElement(c,null)}}]},443,[1,2,3,6,7,125,202,415,75]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),c=r(d[5]),h=r(d[6]),T=h.StyleSheet,u=h.Text,E=h.ToastAndroid,f=h.TouchableWithoutFeedback,y=r(d[7]),w=r(d[8]),v=(function(h){function T(){var n,l;t(this,T);for(var c=arguments.length,h=new Array(c),u=0;u<c;u++)h[u]=arguments[u];return(l=s(this,(n=o(T)).call.apply(n,[this].concat(h)))).state={},l}return l(T,h),n(T,[{key:"render",value:function(){return c.createElement(w,{title:"ToastAndroid"},c.createElement(y,{title:"Simple toast"},c.createElement(f,{onPress:function(){return E.show('This is a toast with short duration',E.SHORT)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with long duration"},c.createElement(f,{onPress:function(){return E.show('This is a toast with long duration',E.LONG)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with top gravity"},c.createElement(f,{onPress:function(){return E.showWithGravity('This is a toast with top gravity',E.SHORT,E.TOP)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with center gravity"},c.createElement(f,{onPress:function(){return E.showWithGravity('This is a toast with center gravity',E.SHORT,E.CENTER)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with bottom gravity"},c.createElement(f,{onPress:function(){return E.showWithGravity('This is a toast with bottom gravity',E.SHORT,E.BOTTOM)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with x offset"},c.createElement(f,{onPress:function(){return E.showWithGravityAndOffset('This is a toast with x offset',E.SHORT,E.CENTER,50,0)}},c.createElement(u,{style:x.text},"Click me."))),c.createElement(y,{title:"Toast with y offset"},c.createElement(f,{onPress:function(){return E.showWithGravityAndOffset('This is a toast with y offset',E.SHORT,E.BOTTOM,0,50)}},c.createElement(u,{style:x.text},"Click me."))))}}]),T})(c.Component);v.title='Toast Example',v.description='Example that demonstrates the use of an Android Toast to provide feedback.';var x=T.create({text:{color:'black'}});m.exports=v},444,[1,2,3,6,7,125,202,348,350]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),l=r(d[3]),s=r(d[4]),c=r(d[5]),p=r(d[6]),u=p.Animated,f=p.StyleSheet,h=p.Text,b=p.View,y=(function(p){function f(){var n,s;t(this,f);for(var c=arguments.length,p=new Array(c),h=0;h<c;h++)p[h]=arguments[h];return(s=o(this,(n=l(f)).call.apply(n,[this].concat(p)))).state={theta:new u.Value(45)},s._animate=function(){s.state.theta.setValue(0),u.timing(s.state.theta,{toValue:360,duration:5e3}).start(s._animate)},s}return s(f,p),n(f,[{key:"componentDidMount",value:function(){this._animate()}},{key:"render",value:function(){return c.createElement(b,{style:x.flipCardContainer},c.createElement(u.View,{style:[x.flipCard,{transform:[{perspective:850},{rotateX:this.state.theta.interpolate({inputRange:[0,180],outputRange:['0deg','180deg']})}]}]},c.createElement(h,{style:x.flipText},"This text is flipping great.")),c.createElement(u.View,{style:[x.flipCard,x.flipCard1,{transform:[{perspective:850},{rotateX:this.state.theta.interpolate({inputRange:[0,180],outputRange:['180deg','360deg']})}]}]},c.createElement(h,{style:x.flipText},"On the flip side...")))}}]),f})(c.Component),x=f.create({container:{height:500},box1:{left:0,backgroundColor:'green',height:50,position:'absolute',top:0,transform:[{translateX:100},{translateY:50},{rotate:'30deg'},{scaleX:2},{scaleY:2}],width:50},box2:{left:0,backgroundColor:'purple',height:50,position:'absolute',top:0,transform:[{scaleX:2},{scaleY:2},{translateX:100},{translateY:50},{rotate:'30deg'}],width:50},box3step1:{left:0,backgroundColor:'lightpink',height:50,position:'absolute',top:0,transform:[{rotate:'30deg'}],width:50},box3step2:{left:0,backgroundColor:'hotpink',height:50,opacity:.5,position:'absolute',top:0,transform:[{rotate:'30deg'},{scaleX:2},{scaleY:2}],width:50},box3step3:{left:0,backgroundColor:'deeppink',height:50,opacity:.5,position:'absolute',top:0,transform:[{rotate:'30deg'},{scaleX:2},{scaleY:2},{translateX:100},{translateY:50}],width:50},box4:{left:0,backgroundColor:'darkorange',height:50,position:'absolute',top:0,transform:[{translate:[200,350]},{scale:2.5},{rotate:'-0.2rad'}],width:100},box5:{backgroundColor:'maroon',height:50,position:'absolute',right:0,top:0,width:50},box5Transform:{transform:[{translate:[-50,35]},{rotate:'50deg'},{scale:2}]},flipCardContainer:{marginVertical:40,flex:1,alignSelf:'center'},flipCard:{width:200,height:200,alignItems:'center',justifyContent:'center',backgroundColor:'blue',backfaceVisibility:'hidden'},flipCard1:{position:'absolute',top:0,backgroundColor:'red'},flipText:{width:90,fontSize:20,color:'white',fontWeight:'bold'}});e.title='Transforms',e.description='View transforms',e.examples=[{title:'Perspective, Rotate, Animation',description:'perspective: 850, rotateX: Animated.timing(0 -> 360)',render:function(){return c.createElement(y,null)}},{title:'Translate, Rotate, Scale',description:"translateX: 100, translateY: 50, rotate: '30deg', scaleX: 2, scaleY: 2",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box1}))}},{title:'Scale, Translate, Rotate, ',description:"scaleX: 2, scaleY: 2, translateX: 100, translateY: 50, rotate: '30deg'",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box2}))}},{title:'Rotate',description:"rotate: '30deg'",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box3step1}))}},{title:'Rotate, Scale',description:"rotate: '30deg', scaleX: 2, scaleY: 2",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box3step2}))}},{title:'Rotate, Scale, Translate ',description:"rotate: '30deg', scaleX: 2, scaleY: 2, translateX: 100, translateY: 50",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box3step3}))}},{title:'Translate, Scale, Rotate',description:"translate: [200, 350], scale: 2.5, rotate: '-0.2rad'",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:x.box4}))}},{title:'Translate, Rotate, Scale',description:"translate: [-50, 35], rotate: '50deg', scale: 2",render:function(){return c.createElement(b,{style:x.container},c.createElement(b,{style:[x.box5,x.box5Transform]}))}}]},445,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t,n,l=r(d[0]),o=r(d[1]),c=o.StyleSheet,u=o.View,b=o.Text,s=o.TouchableHighlight,p=o.Vibration;o.Platform;e.framework='React',e.title='Vibration',e.description='Vibration API',t=[0,500,200,500],n="[0, 500, 200, 500]\narg 0: duration to wait before turning the vibrator on.\narg with odd: vibration length.\narg with even: duration to wait before next vibration.\n",e.examples=[{title:'Pattern Descriptions',render:function(){return l.createElement(u,{style:f.wrapper},l.createElement(b,null,n))}},{title:'Vibration.vibrate()',render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate()}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate")))}},{title:"Vibration.vibrate([0, 500, 200, 500])",render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate(t)}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate once")))}},{title:"Vibration.vibrate([0, 500, 200, 500], true)",render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.vibrate(t,!0)}},l.createElement(u,{style:f.button},l.createElement(b,null,"Vibrate until cancel")))}},{title:'Vibration.cancel()',render:function(){return l.createElement(s,{style:f.wrapper,onPress:function(){return p.cancel()}},l.createElement(u,{style:f.button},l.createElement(b,null,"Cancel")))}}];var f=c.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:10}})},446,[125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),c=r(d[5]),u=r(d[6]),h=u.Image,b=u.PixelRatio,f=u.ScrollView,p=u.StyleSheet,y=u.Text,S=u.TextInput,v=u.TouchableOpacity,E=u.View,k='ws://localhost:5555/',w='http://localhost:5556/',C=['close','error','message','open'],T=['CONNECTING','OPEN','CLOSING','CLOSED'],x=(function(u){function h(){return t(this,h),s(this,o(h).apply(this,arguments))}return l(h,u),n(h,[{key:"render",value:function(){var t=c.createElement(y,{style:U.buttonLabel},this.props.label);return this.props.disabled?c.createElement(E,{style:[U.button,U.disabledButton]},t):c.createElement(v,{onPress:this.props.onPress,style:U.button},t)}}]),h})(c.Component),_=(function(u){function h(){return t(this,h),s(this,o(h).apply(this,arguments))}return l(h,u),n(h,[{key:"render",value:function(){return c.createElement(E,{style:U.row},c.createElement(y,null,this.props.label),this.props.value?c.createElement(y,null,this.props.value):null,this.props.children)}}]),h})(c.Component),P=(function(u){function b(){var n,l;t(this,b);for(var c=arguments.length,u=new Array(c),h=0;h<c;h++)u[h]=arguments[h];return(l=s(this,(n=o(b)).call.apply(n,[this].concat(u)))).ws=null,l.state={blob:null},l}return l(b,u),n(b,[{key:"componentDidMount",value:function(){var t=this,n=this.ws=new WebSocket(this.props.url);n.binaryType='blob',n.onmessage=function(n){if(n.data instanceof Blob){var s=n.data;t.state.blob&&t.state.blob.close(),t.setState({blob:s})}},n.onopen=function(t){n.send('getImage')}}},{key:"componentUnmount",value:function(){this.state.blob&&this.state.blob.close(),this.ws&&this.ws.close()}},{key:"render",value:function(){return this.state.blob?c.createElement(h,{source:{uri:URL.createObjectURL(this.state.blob)},style:{width:50,height:50}}):c.createElement(E,null)}}]),b})(c.Component);function A(t){return void 0===t||null===t?'(no value)':'undefined'!=typeof ArrayBuffer&&'undefined'!=typeof Uint8Array&&t instanceof ArrayBuffer?"ArrayBuffer {"+String(Array.from(new Uint8Array(t)))+"}":t}var L=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),b=0;b<c;b++)u[b]=arguments[b];return(l=s(this,(n=o(h)).call.apply(n,[this].concat(u)))).state={url:k,httpUrl:w,fetchStatus:null,socket:null,socketState:null,lastSocketEvent:null,lastMessage:null,outgoingMessage:''},l._connect=function(){var t=new WebSocket(l.state.url);C.forEach(function(n){return t.addEventListener(n,l._onSocketEvent)}),l.setState({socket:t,socketState:t.readyState})},l._disconnect=function(){l.state.socket&&l.state.socket.close()},l._onSocketEvent=function(t){var n={socketState:t.target.readyState,lastSocketEvent:t.type};'message'===t.type&&(n.lastMessage=t.data),l.setState(n)},l._sendText=function(){l.state.socket&&(l.state.socket.send(l.state.outgoingMessage),l.setState({outgoingMessage:''}))},l._sendHttp=function(){l.setState({fetchStatus:'fetching'}),fetch(l.state.httpUrl).then(function(t){t.status>=200&&t.status<400&&l.setState({fetchStatus:'OK'})})},l._sendBinary=function(){if(l.state.socket&&'undefined'!=typeof ArrayBuffer&&'undefined'!=typeof Uint8Array){for(var t=l.state.outgoingMessage,n=new Uint8Array(t.length),s=0;s<t.length;s++)n[s]=t.charCodeAt(s);l.state.socket.send(n),l.setState({outgoingMessage:''})}},l}return l(h,u),n(h,[{key:"render",value:function(){var t=this,n=T[this.state.socketState||-1],s=!this.state.socket||this.state.socket.readyState>=WebSocket.CLOSING,o='OPEN'===n;return c.createElement(f,{style:U.container},c.createElement(E,{style:U.note},c.createElement(y,null,"To start the WS test server:"),c.createElement(y,{style:U.monospace},"./RNTester/js/websocket_test_server.js")),c.createElement(_,{label:"Current WebSocket state",value:A(n)}),c.createElement(_,{label:"Last WebSocket event",value:A(this.state.lastSocketEvent)}),c.createElement(_,{label:"Last message received",value:A(this.state.lastMessage)}),c.createElement(_,{label:"Last image received"},o?c.createElement(P,{url:this.state.url}):null),c.createElement(S,{style:U.textInput,autoCorrect:!1,placeholder:"Server URL...",onChangeText:function(n){return t.setState({url:n})},value:this.state.url}),c.createElement(E,{style:U.buttonRow},c.createElement(x,{onPress:this._connect,label:"Connect",disabled:!s}),c.createElement(x,{onPress:this._disconnect,label:"Disconnect",disabled:s})),c.createElement(S,{style:U.textInput,autoCorrect:!1,placeholder:"Type message here...",onChangeText:function(n){return t.setState({outgoingMessage:n})},value:this.state.outgoingMessage}),c.createElement(E,{style:U.buttonRow},c.createElement(x,{onPress:this._sendText,label:"Send as text",disabled:!o}),c.createElement(x,{onPress:this._sendBinary,label:"Send as binary",disabled:!o})),c.createElement(E,{style:U.note},c.createElement(y,null,"To start the HTTP test server:"),c.createElement(y,{style:U.monospace},"./RNTester/js/http_test_server.js")),c.createElement(S,{style:U.textInput,autoCorrect:!1,placeholder:"HTTP URL...",onChangeText:function(n){return t.setState({httpUrl:n})},value:this.state.httpUrl}),c.createElement(E,{style:U.buttonRow},c.createElement(x,{onPress:this._sendHttp,label:"Send HTTP request to set cookie",disabled:'fetching'===this.state.fetchStatus})),c.createElement(E,{style:U.note},c.createElement(y,null,'OK'===this.state.fetchStatus?'Done. Check your WS server console to see if the next WS requests include the cookie (should be "wstest=OK")':'-')))}}]),h})(c.Component);L.title='WebSocket',L.description='WebSocket API';var U=p.create({container:{flex:1},note:{padding:8,margin:4,backgroundColor:'white'},monospace:{fontFamily:'courier',fontSize:11},row:{height:40,padding:4,backgroundColor:'white',flexDirection:'row',justifyContent:'space-between',alignItems:'center',borderBottomWidth:1/b.get(),borderColor:'grey'},button:{margin:8,padding:8,borderRadius:4,backgroundColor:'blue',alignSelf:'center'},disabledButton:{opacity:.5},buttonLabel:{color:'white'},buttonRow:{flexDirection:'row',justifyContent:'center'},textInput:{height:40,backgroundColor:'white',margin:8,padding:8}});m.exports=L},447,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),u=r(d[3]),o=r(d[4]),c=r(d[5]),s=r(d[6]),f=r(d[7]);e.framework='React',e.title='XMLHttpRequest',e.description="Example that demonstrates upload and download requests using XMLHttpRequest.",e.examples=[{title:'File Download',render:function(){return t.createElement(n,null)}},{title:'multipart/form-data Upload',render:function(){return t.createElement(l,null)}},{title:'multipart/form-data Upload',render:function(){return t.createElement(u,null)}},{title:'Fetch Test',render:function(){return t.createElement(c,null)}},{title:'Headers',render:function(){return t.createElement(o,null)}},{title:'Time Out Test',render:function(){return t.createElement(s,null)}},{title:'Cookies',render:function(){return t.createElement(f,null)}}]},448,[125,449,450,451,452,453,454,455]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),o=r(d[3]),l=r(d[4]),c=r(d[5]),u=r(d[6]),p=u.Alert,h=(u.Platform,u.ProgressBarAndroid),f=(u.ProgressViewIOS,u.StyleSheet),y=u.Switch,E=u.Text,w=u.TouchableHighlight,b=u.View;function v(t){return Math.round(t/1e3)}var H=(function(u){function p(){return t(this,p),s(this,o(p).apply(this,arguments))}return l(p,u),n(p,[{key:"render",value:function(){return c.createElement(h,{progress:this.props.progress,styleAttr:"Horizontal",indeterminate:!1})}}]),p})(c.Component),L=(function(u){function h(){var n,l;t(this,h);for(var c=arguments.length,u=new Array(c),f=0;f<c;f++)u[f]=arguments[f];return(l=s(this,(n=o(h)).call.apply(n,[this].concat(u)))).state={downloading:!1,contentLength:1,responseLength:0,progressTotal:1,progressLoaded:0,readystateHandler:!1,progressHandler:!0,arraybuffer:!1},l.xhr=null,l.cancelled=!1,l._download=function(){var t;l.xhr?(t=l.xhr).abort():t=l.xhr=new XMLHttpRequest;l.state.readystateHandler&&(t.onreadystatechange=function(){if(t.readyState===t.HEADERS_RECEIVED){var n=parseInt(t.getResponseHeader('Content-Length'),10);l.setState({contentLength:n,responseLength:0})}else t.readyState===t.LOADING&&t.response&&l.setState({responseLength:t.response.length})}),l.state.progressHandler&&(t.onprogress=function(t){l.setState({progressTotal:t.total,progressLoaded:t.loaded})}),l.state.arraybuffer&&(t.responseType='arraybuffer'),t.onload=function(){if(l.setState({downloading:!1}),l.cancelled)l.cancelled=!1;else if(200===t.status){var n="Response is a string, "+t.response.length+" characters long.";t.response instanceof ArrayBuffer&&(n="Response is an ArrayBuffer, "+t.response.byteLength+" bytes long."),p.alert('Download complete!',n)}else 0!==t.status?p.alert('Error',"Server returned HTTP status of "+t.status+": "+t.responseText):p.alert('Error',t.responseText)},t.open('GET','http://aleph.gutenberg.org/cache/epub/100/pg100.txt.utf8'),t.setRequestHeader('Accept-Encoding',''),t.send(),l.setState({downloading:!0})},l}return l(h,u),n(h,[{key:"componentWillUnmount",value:function(){this.cancelled=!0,this.xhr&&this.xhr.abort()}},{key:"render",value:function(){var t=this,n=this.state.downloading?c.createElement(b,{style:S.wrapper},c.createElement(b,{style:S.button},c.createElement(E,null,"Downloading..."))):c.createElement(w,{style:S.wrapper,onPress:this._download},c.createElement(b,{style:S.button},c.createElement(E,null,"Download 5MB Text File"))),s=null,o=null;if(this.state.readystateHandler&&!this.state.arraybuffer){var l=this.state,u=l.responseLength,p=l.contentLength;s=c.createElement(b,null,c.createElement(E,{style:S.progressBarLabel},"responseText: ",v(u),"/",v(p),"k chars"),c.createElement(H,{progress:u/p}))}if(this.state.progressHandler){var h=this.state,f=h.progressLoaded,L=h.progressTotal;o=c.createElement(b,null,c.createElement(E,{style:S.progressBarLabel},"onprogress: ",v(f),"/",v(L),' ',"KB"),c.createElement(H,{progress:f/L}))}return c.createElement(b,null,c.createElement(b,{style:S.configRow},c.createElement(E,null,"onreadystatechange handler"),c.createElement(y,{value:this.state.readystateHandler,onValueChange:function(n){return t.setState({readystateHandler:n})}})),c.createElement(b,{style:S.configRow},c.createElement(E,null,"onprogress handler"),c.createElement(y,{value:this.state.progressHandler,onValueChange:function(n){return t.setState({progressHandler:n})}})),c.createElement(b,{style:S.configRow},c.createElement(E,null,"download as arraybuffer"),c.createElement(y,{value:this.state.arraybuffer,onValueChange:function(n){return t.setState({arraybuffer:n})}})),n,s,o)}}]),h})(c.Component),S=f.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:8},progressBarLabel:{marginTop:12,marginBottom:8},configRow:{flexDirection:'row',paddingVertical:8,alignItems:'center',justifyContent:'space-between'}});m.exports=L},449,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),l=r(d[2]),o=r(d[3]),s=r(d[4]),p=r(d[5]),u=r(d[6]),y=u.Alert,c=u.Linking,f=u.Picker,h=u.StyleSheet,A=u.Text,v=u.TouchableHighlight,U=u.View,w={String:String,ArrayBuffer:ArrayBuffer,Int8Array:Int8Array,Uint8Array:Uint8Array,Uint8ClampedArray:Uint8ClampedArray,Int16Array:Int16Array,Uint16Array:Uint16Array,Int32Array:Int32Array,Uint32Array:Uint32Array,Float32Array:Float32Array,Float64Array:Float64Array,DataView:DataView},T="\nI am the spirit that negates.\nAnd rightly so, for all that comes to be\nDeserves to perish wretchedly;\n'Twere better nothing would begin.\nThus everything that that your terms, sin,\nDestruction, evil represent\u2014\nThat is my proper element.\n\n--Faust, JW Goethe\n",b=(function(u){function h(){var n,s;t(this,h);for(var p=arguments.length,u=new Array(p),y=0;y<p;y++)u[y]=arguments[y];return(s=l(this,(n=o(h)).call.apply(n,[this].concat(u)))).state={type:'Uint8Array'},s._upload=function(){var t=new XMLHttpRequest;if(t.open('POST','http://posttestserver.com/post.php'),t.onload=function(){return h.handlePostTestServerUpload(t)},t.setRequestHeader('Content-Type','text/plain'),'String'!==s.state.type){for(var n=new ArrayBuffer(256),l=new Uint8Array(n),o=0;o<T.length;o++)l[o]=T.charCodeAt(o);if('ArrayBuffer'!==s.state.type)if('Uint8Array'!==s.state.type){var p=w[s.state.type];t.send(new p(n))}else t.send(l);else t.send(n)}else t.send(T)},s}return s(h,u),n(h,[{key:"render",value:function(){var t=this;return p.createElement(U,null,p.createElement(A,null,"Upload 255 bytes as..."),p.createElement(f,{selectedValue:this.state.type,onValueChange:function(n){return t.setState({type:n})}},Object.keys(w).map(function(t){return p.createElement(f.Item,{key:t,label:t,value:t})})),p.createElement(U,{style:B.uploadButton},p.createElement(v,{onPress:this._upload},p.createElement(U,{style:B.uploadButtonBox},p.createElement(A,{style:B.uploadButtonLabel},"Upload")))))}}],[{key:"handlePostTestServerUpload",value:function(t){if(200===t.status)if(t.responseText){var n=t.responseText.indexOf('http://www.posttestserver.com/');if(-1!==n){var l=t.responseText.slice(n).split('\n')[0];console.log('Upload successful: '+l),c.openURL(l)}else y.alert('Upload failed','Invalid response payload.')}else y.alert('Upload failed','No response payload.');else y.alert('Upload failed','Expected HTTP 200 OK response, got '+t.status)}}]),h})(p.Component),B=h.create({uploadButton:{marginTop:16},uploadButtonBox:{flex:1,paddingVertical:12,alignItems:'center',backgroundColor:'blue',borderRadius:4},uploadButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}});m.exports=b},450,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),o=r(d[1]),n=r(d[2]),l=r(d[3]),s=r(d[4]),u=r(d[5]),h=r(d[6]),p=r(d[7]),c=p.CameraRoll,P=p.Image,f=p.ImageEditor,x=(p.Platform,p.StyleSheet),y=p.Text,v=p.TextInput,b=p.TouchableHighlight,E=p.View,T=r(d[8]),C=20,_=(function(p){function x(n){var u;return o(this,x),(u=l(this,s(x).call(this,n))).state={isUploading:!1,uploadProgress:null,randomPhoto:null,textParams:[]},u._isMounted=!0,u._fetchRandomPhoto=function(){c.getPhotos({first:C}).then(function(t){if(u._isMounted){var o=t.edges,n=o[Math.floor(Math.random()*o.length)],l=n&&n.node&&n.node.image;if(l){var s=l.width,h=l.height;s*=.25,h*=.25,f.cropImage(l.uri,{offset:{x:0,y:0},size:{width:s,height:h}},function(t){return u.setState({randomPhoto:{uri:t}})},function(t){})}}},function(t){})},u._addTextParam=function(){var t=u.state.textParams;t.push({name:'',value:''}),u.setState({textParams:t})},u._upload=function(){var o=new XMLHttpRequest;o.open('POST','http://posttestserver.com/post.php'),o.onload=function(){u.setState({isUploading:!1}),T.handlePostTestServerUpload(o)};var n=new FormData;u.state.randomPhoto&&n.append('image',t({},u.state.randomPhoto,{type:'image/jpg',name:'image.jpg'})),u.state.textParams.forEach(function(t){return n.append(t.name,t.value)}),o.upload.onprogress=function(t){t.lengthComputable&&u.setState({uploadProgress:t.loaded/t.total})},o.send(n),u.setState({isUploading:!0})},u._fetchRandomPhoto(),u}return u(x,p),n(x,[{key:"componentWillUnmount",value:function(){this._isMounted=!1}},{key:"_onTextParamNameChange",value:function(t,o){var n=this.state.textParams;n[t].name=o,this.setState({textParams:n})}},{key:"_onTextParamValueChange",value:function(t,o){var n=this.state.textParams;n[t].value=o,this.setState({textParams:n})}},{key:"render",value:function(){var t=this,o=null;this.state.randomPhoto&&(o=h.createElement(P,{source:this.state.randomPhoto,style:B.randomPhoto}));var n=this.state.textParams.map(function(o,n){return h.createElement(E,{style:B.paramRow},h.createElement(v,{autoCapitalize:"none",autoCorrect:!1,onChangeText:t._onTextParamNameChange.bind(t,n),placeholder:"name...",style:B.textInput}),h.createElement(y,{style:B.equalSign},"="),h.createElement(v,{autoCapitalize:"none",autoCorrect:!1,onChangeText:t._onTextParamValueChange.bind(t,n),placeholder:"value...",style:B.textInput}))}),l=this.state.isUploading?'Uploading...':'Upload',s=this.state.uploadProgress;null!==s&&(l+=' '+Math.round(100*s)+'%');var u=h.createElement(E,{style:B.uploadButtonBox},h.createElement(y,{style:B.uploadButtonLabel},l));return this.state.isUploading||(u=h.createElement(b,{onPress:this._upload},u)),h.createElement(E,null,h.createElement(E,{style:B.paramRow},h.createElement(y,{style:B.photoLabel},"Random photo from your library (",h.createElement(y,{style:B.textButton,onPress:this._fetchRandomPhoto},"update"),")"),o),n,h.createElement(E,null,h.createElement(y,{style:[B.textButton,B.addTextParamButton],onPress:this._addTextParam},"Add a text param")),h.createElement(E,{style:B.uploadButton},u))}}]),x})(h.Component),B=x.create({paramRow:{flexDirection:'row',paddingVertical:8,alignItems:'center',borderBottomWidth:x.hairlineWidth,borderBottomColor:'grey'},photoLabel:{flex:1},randomPhoto:{width:50,height:50},textButton:{color:'blue'},addTextParamButton:{marginTop:8},textInput:{flex:1,borderRadius:3,borderColor:'grey',borderWidth:1,height:50,paddingLeft:8},equalSign:{paddingHorizontal:4},uploadButton:{marginTop:16},uploadButtonBox:{flex:1,paddingVertical:12,alignItems:'center',backgroundColor:'blue',borderRadius:4},uploadButtonLabel:{color:'white',fontSize:16,fontWeight:'500'}});m.exports=_},451,[10,1,2,3,6,7,125,202,450]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),l=r(d[3]),o=r(d[4]),u=r(d[5]),h=r(d[6]),c=h.StyleSheet,p=h.Text,v=h.TouchableHighlight,E=h.View,w=(function(h){function c(s){var o;return t(this,c),(o=n(this,l(c).call(this,s))).cancelled=!1,o.state={status:'',headers:'',contentSize:1,downloaded:0},o}return o(c,h),s(c,[{key:"download",value:function(){var t=this;this.xhr&&this.xhr.abort();var s=this.xhr||new XMLHttpRequest;s.onreadystatechange=function(){if(s.readyState===s.DONE){if(t.cancelled)return void(t.cancelled=!1);200===s.status?t.setState({status:'Download complete!',headers:s.getAllResponseHeaders()}):0!==s.status?t.setState({status:'Error: Server returned HTTP status of '+s.status+' '+s.responseText}):t.setState({status:'Error: '+s.responseText})}},s.open('GET','https://httpbin.org/response-headers?header1=value&header2=value1&header2=value2'),s.send(),this.xhr=s,this.setState({status:'Downloading...'})}},{key:"componentWillUnmount",value:function(){this.cancelled=!0,this.xhr&&this.xhr.abort()}},{key:"render",value:function(){var t='Downloading...'===this.state.status?u.createElement(E,{style:b.wrapper},u.createElement(E,{style:b.button},u.createElement(p,null,"..."))):u.createElement(v,{style:b.wrapper,onPress:this.download.bind(this)},u.createElement(E,{style:b.button},u.createElement(p,null,"Get headers")));return u.createElement(E,null,t,u.createElement(p,null,this.state.headers))}}]),c})(u.Component),b=c.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:8}});m.exports=w},452,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),s=r(d[2]),l=r(d[3]),o=r(d[4]),u=r(d[5]),p=r(d[6]),h=p.StyleSheet,c=p.Text,f=p.TextInput,y=p.View,b=(p.Platform,(function(p){function h(n){var o;return t(this,h),(o=s(this,l(h).call(this,n))).state={responseText:null},o.responseURL=null,o.responseHeaders=null,o}return o(h,p),n(h,[{key:"submit",value:function(t){var n=this;fetch(t).then(function(t){return n.responseURL=t.url,n.responseHeaders=t.headers,t.text()}).then(function(t){n.setState({responseText:t})})}},{key:"_renderHeaders",value:function(){if(!this.responseHeaders)return null;for(var t=[],n=Object.keys(this.responseHeaders.map),s=0;s<n.length;s++){var l=n[s],o=this.responseHeaders.get(l);t.push(u.createElement(c,null,l,": ",o))}return t}},{key:"render",value:function(){var t=this,n=this.responseURL?u.createElement(y,{style:{marginTop:10}},u.createElement(c,{style:x.label},"Server response URL:"),u.createElement(c,null,this.responseURL)):null,s=this.responseHeaders?u.createElement(y,{style:{marginTop:10}},u.createElement(c,{style:x.label},"Server response headers:"),this._renderHeaders()):null,l=this.state.responseText?u.createElement(y,{style:{marginTop:10}},u.createElement(c,{style:x.label},"Server response:"),u.createElement(f,{editable:!1,multiline:!0,defaultValue:this.state.responseText,style:x.textOutput})):null;return u.createElement(y,null,u.createElement(c,{style:x.label},"Edit URL to submit:"),u.createElement(f,{returnKeyType:"go",defaultValue:"http://www.posttestserver.com/post.php",onSubmitEditing:function(n){t.submit(n.nativeEvent.text)},style:x.textInput}),n,s,l)}}]),h})(u.Component)),x=h.create({textInput:{flex:1,borderRadius:3,borderColor:'grey',borderWidth:1,height:44,paddingLeft:8},label:{flex:1,color:'#aaa',fontWeight:'500',height:20},textOutput:{flex:1,fontSize:17,borderRadius:3,borderColor:'grey',borderWidth:1,height:200,paddingLeft:8}});m.exports=b},453,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),n=r(d[1]),o=r(d[2]),s=r(d[3]),l=r(d[4]),u=r(d[5]),c=r(d[6]),h=c.StyleSheet,p=c.Text,x=c.TouchableHighlight,b=c.View,E=(function(c){function h(n){var l;return t(this,h),(l=o(this,s(h).call(this,n))).state={status:'',loading:!1},l}return l(h,c),n(h,[{key:"loadTimeOutRequest",value:function(){var t=this;this.xhr&&this.xhr.abort();var n=this.xhr||new XMLHttpRequest;n.onerror=function(){console.log('Status ',n.status),console.log('Error ',n.responseText)},n.ontimeout=function(){t.setState({status:n.responseText,loading:!1})},n.onload=function(){console.log('Status ',n.status),console.log('Response ',n.responseText)},n.open('GET','https://httpbin.org/delay/5'),n.timeout=2e3,n.send(),this.xhr=n,this.setState({loading:!0})}},{key:"componentWillUnmount",value:function(){this.xhr&&this.xhr.abort()}},{key:"render",value:function(){var t=this.state.loading?u.createElement(b,{style:f.wrapper},u.createElement(b,{style:f.button},u.createElement(p,null,"Loading..."))):u.createElement(x,{style:f.wrapper,onPress:this.loadTimeOutRequest.bind(this)},u.createElement(b,{style:f.button},u.createElement(p,null,"Make Time Out Request")));return u.createElement(b,null,t,u.createElement(p,null,this.state.status))}}]),h})(u.Component),f=h.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:8}});m.exports=E},454,[1,2,3,6,7,125,202]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]),s=r(d[1]),n=r(d[2]),o=r(d[3]),l=r(d[4]),c=r(d[5]),u=r(d[6]),h=u.StyleSheet,b=u.Text,k=u.TouchableHighlight,f=u.View,p=u.WebView,E=r(d[7]),y=(function(u){function h(s){var l;return t(this,h),(l=n(this,o(h).call(this,s))).cancelled=!1,l.state={status:'',a:1,b:2},l}return l(h,u),s(h,[{key:"setCookie",value:function(t){var s=this,n=this.state,o=n.a,l=n.b;fetch("https://"+t+"/cookies/set?a="+o+"&b="+l).then(function(t){s.setStatus("Cookies a="+o+", b="+l+" set"),s.refreshWebview()}),this.setState({status:'Setting cookies...',a:o+1,b:l+2})}},{key:"getCookies",value:function(t){var s=this;fetch("https://"+t+"/cookies").then(function(t){return t.json()}).then(function(t){s.setStatus("Got cookies "+JSON.stringify(t.cookies)+" from server"),s.refreshWebview()}),this.setStatus('Getting cookies...')}},{key:"clearCookies",value:function(){var t=this;E.clearCookies(function(s){t.setStatus('Cookies cleared, had cookies='+s.toString()),t.refreshWebview()})}},{key:"refreshWebview",value:function(){this.refs.webview.reload()}},{key:"setStatus",value:function(t){this.setState({status:t})}},{key:"render",value:function(){return c.createElement(f,null,c.createElement(k,{style:v.wrapper,onPress:this.setCookie.bind(this,'httpbin.org')},c.createElement(f,{style:v.button},c.createElement(b,null,"Set cookie"))),c.createElement(k,{style:v.wrapper,onPress:this.setCookie.bind(this,'eu.httpbin.org')},c.createElement(f,{style:v.button},c.createElement(b,null,"Set cookie (EU)"))),c.createElement(k,{style:v.wrapper,onPress:this.getCookies.bind(this,'httpbin.org')},c.createElement(f,{style:v.button},c.createElement(b,null,"Get cookies"))),c.createElement(k,{style:v.wrapper,onPress:this.getCookies.bind(this,'eu.httpbin.org')},c.createElement(f,{style:v.button},c.createElement(b,null,"Get cookies (EU)"))),c.createElement(k,{style:v.wrapper,onPress:this.clearCookies.bind(this)},c.createElement(f,{style:v.button},c.createElement(b,null,"Clear cookies"))),c.createElement(b,null,this.state.status),c.createElement(k,{style:v.wrapper,onPress:this.refreshWebview.bind(this)},c.createElement(f,{style:v.button},c.createElement(b,null,"Refresh Webview"))),c.createElement(p,{ref:"webview",source:{uri:'http://httpbin.org/cookies'},style:{height:100}}))}}]),h})(c.Component),v=h.create({wrapper:{borderRadius:5,marginBottom:5},button:{backgroundColor:'#eeeeee',padding:8}});m.exports=y},455,[1,2,3,6,7,125,202,85]);
+__d(function(g,r,i,a,m,e,d){'use strict';var t=r(d[0]);m.exports=function(p,n){return!p||'RNTesterListAction'===n.type||p.openExample&&'RNTesterBackAction'===n.type?{openExample:null}:'RNTesterExampleAction'===n.type&&t.Modules[n.openExample]?{openExample:n.openExample}:p}},456,[353]);
+__d(function(g,r,i,a,m,e,d){'use strict';var l=r(d[0]),n=r(d[1]),t=r(d[2]),u=l.Alert;function o(l){var o=l.split('/example/')[1];return o?t.Modules[o]?n.ExampleAction(o):(u.alert(o+" example could not be found!"),null):null}m.exports=function(l){if(!l)return null;var n=l.split('rntester:/');return n[1]?o(n[1]):null}},457,[202,200,353]);
+__r(45);
 __r(0);
\ No newline at end of file
diff --git a/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterActivity.java b/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterActivity.java
index 89fe22f417325c..1dd4848252ac23 100644
--- a/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterActivity.java
+++ b/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java b/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java
index 52c215396f437e..5253dbccfbd3bb 100644
--- a/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java
+++ b/RNTester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,6 +12,7 @@
 import android.content.Context;
 import android.util.Log;
 
+import com.facebook.react.BuildConfig;
 import com.facebook.react.ReactApplication;
 import com.facebook.react.ReactNativeHost;
 import com.facebook.react.ReactPackage;
diff --git a/RNTester/e2e/__tests__/Button-test.js b/RNTester/e2e/__tests__/Button-test.js
new file mode 100644
index 00000000000000..2d5a573f043e9c
--- /dev/null
+++ b/RNTester/e2e/__tests__/Button-test.js
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ */
+
+/* global device, element, by, expect */
+
+describe('Button', () => {
+  beforeAll(async () => {
+    await device.reloadReactNative();
+    await element(by.id('explorer_search')).replaceText('<Button>');
+    await element(
+      by.label('<Button> Simple React Native button component.'),
+    ).tap();
+  });
+
+  afterAll(async () => {
+    //TODO - remove app state persistency, till then, we must go back to main screen,
+    await element(by.label('Back')).tap();
+  });
+
+  it('Simple button should be tappable', async () => {
+    await element(by.label('Press Me')).tap();
+    await expect(element(by.text('Simple has been pressed!'))).toBeVisible();
+    await element(by.text('OK')).tap();
+  });
+
+  it('Adjusted color button should be tappable', async () => {
+    await element(by.label('Press Purple')).tap();
+    await expect(element(by.text('Purple has been pressed!'))).toBeVisible();
+    await element(by.text('OK')).tap();
+  });
+
+  it("Two buttons with JustifyContent:'space-between' should be tappable", async () => {
+    await element(by.label('This looks great!')).tap();
+    await expect(element(by.text('Left has been pressed!'))).toBeVisible();
+    await element(by.text('OK')).tap();
+
+    await element(by.label('Ok!')).tap();
+    await expect(element(by.text('Right has been pressed!'))).toBeVisible();
+    await element(by.text('OK')).tap();
+  });
+
+  it('Disabled button should not interact', async () => {
+    await element(by.label('I Am Disabled')).tap();
+    await expect(
+      element(by.text('Disabled has been pressed!')),
+    ).toBeNotVisible();
+  });
+});
diff --git a/RNTester/e2e/__tests__/DatePickerIOS-test.js b/RNTester/e2e/__tests__/DatePickerIOS-test.js
new file mode 100644
index 00000000000000..0947e00c0a09a2
--- /dev/null
+++ b/RNTester/e2e/__tests__/DatePickerIOS-test.js
@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ */
+
+/* global element, by, expect */
+
+describe('DatePickerIOS', () => {
+  beforeAll(async () => {
+    await element(by.id('explorer_search')).replaceText('<DatePickerIOS>');
+    await element(
+      by.label(
+        '<DatePickerIOS> Select dates and times using the native UIDatePicker.',
+      ),
+    ).tap();
+  });
+
+  afterAll(async () => {
+    await element(by.label('Back')).tap();
+  });
+
+  it('Should change indicator with datetime picker', async () => {
+    const testID = 'date-and-time';
+    const indicatorID = 'date-and-time-indicator';
+
+    const testElement = await element(
+      by.type('UIPickerView').withAncestor(by.id(testID)),
+    );
+    const indicator = await element(by.id(indicatorID));
+
+    await expect(testElement).toBeVisible();
+    await expect(indicator).toBeVisible();
+
+    await testElement.setColumnToValue(0, 'Dec 4');
+    await testElement.setColumnToValue(1, '4');
+    await testElement.setColumnToValue(2, '10');
+    await testElement.setColumnToValue(3, 'AM');
+
+    await expect(indicator).toHaveText('12/4/2005 4:10 AM');
+  });
+
+  it('Should change indicator with date-only picker', async () => {
+    const testID = 'date-only';
+    const indicatorID = 'date-and-time-indicator';
+
+    const testElement = await element(
+      by.type('UIPickerView').withAncestor(by.id(testID)),
+    );
+    const indicator = await element(by.id(indicatorID));
+
+    await expect(testElement).toBeVisible();
+    await expect(indicator).toBeVisible();
+
+    await testElement.setColumnToValue(0, 'November');
+    await testElement.setColumnToValue(1, '3');
+    await testElement.setColumnToValue(2, '2006');
+
+    await expect(indicator).toHaveText('11/3/2006 4:10 AM');
+  });
+});
diff --git a/RNTester/e2e/__tests__/Picker-test.js b/RNTester/e2e/__tests__/Picker-test.js
new file mode 100644
index 00000000000000..37a97ae49498e0
--- /dev/null
+++ b/RNTester/e2e/__tests__/Picker-test.js
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ */
+
+/* global element, by, expect */
+
+describe('Picker', () => {
+  beforeAll(async () => {
+    await element(by.id('explorer_search')).replaceText('<Picker>');
+    await element(
+      by.label(
+        '<Picker> Provides multiple options to choose from, using either a dropdown menu or a dialog.',
+      ),
+    ).tap();
+  });
+
+  afterAll(async () => {
+    await element(by.label('Back')).tap();
+  });
+
+  it('should be selectable by ID', async () => {
+    await expect(element(by.id('basic-picker'))).toBeVisible();
+  });
+});
diff --git a/RNTester/e2e/__tests__/Switch-test.js b/RNTester/e2e/__tests__/Switch-test.js
new file mode 100644
index 00000000000000..c1d819d3023b6a
--- /dev/null
+++ b/RNTester/e2e/__tests__/Switch-test.js
@@ -0,0 +1,81 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ */
+
+/* global device, element, by, expect */
+
+const jestExpect = require('expect');
+
+describe('Switch', () => {
+  beforeEach(async () => {
+    await device.reloadReactNative();
+    await element(by.id('explorer_search')).replaceText('<Switch>');
+    await element(by.label('<Switch> Native boolean input')).tap();
+  });
+
+  it('Switch that starts off should switch', async () => {
+    const testID = 'on-off-initial-off';
+    const indicatorID = 'on-off-initial-off-indicator';
+
+    await expect(element(by.id(testID))).toHaveValue('0');
+    await expect(element(by.id(indicatorID))).toHaveText('Off');
+    await element(by.id(testID)).tap();
+    await expect(element(by.id(testID))).toHaveValue('1');
+    await expect(element(by.id(indicatorID))).toHaveText('On');
+  });
+
+  it('Switch that starts on should switch', async () => {
+    const testID = 'on-off-initial-on';
+    const indicatorID = 'on-off-initial-on-indicator';
+
+    await expect(element(by.id(testID))).toHaveValue('1');
+    await expect(element(by.id(indicatorID))).toHaveText('On');
+    await element(by.id(testID)).tap();
+    await expect(element(by.id(testID))).toHaveValue('0');
+    await expect(element(by.id(indicatorID))).toHaveText('Off');
+  });
+
+  it('disabled switch should not toggle', async () => {
+    const onTestID = 'disabled-initial-on';
+    const offTestID = 'disabled-initial-off';
+    const onIndicatorID = 'disabled-initial-on-indicator';
+    const offIndicatorID = 'disabled-initial-off-indicator';
+
+    await expect(element(by.id(onTestID))).toHaveValue('1');
+    await expect(element(by.id(onIndicatorID))).toHaveText('On');
+
+    try {
+      await element(by.id(onTestID)).tap();
+      throw new Error('Does not match');
+    } catch (err) {
+      jestExpect(err.message.message).toEqual(
+        jestExpect.stringContaining(
+          'Cannot perform action due to constraint(s) failure',
+        ),
+      );
+    }
+    await expect(element(by.id(onTestID))).toHaveValue('1');
+    await expect(element(by.id(onIndicatorID))).toHaveText('On');
+
+    await expect(element(by.id(offTestID))).toHaveValue('0');
+    await expect(element(by.id(offIndicatorID))).toHaveText('Off');
+    try {
+      await element(by.id(offTestID)).tap();
+      throw new Error('Does not match');
+    } catch (err) {
+      jestExpect(err.message.message).toEqual(
+        jestExpect.stringContaining(
+          'Cannot perform action due to constraint(s) failure',
+        ),
+      );
+    }
+    await expect(element(by.id(offTestID))).toHaveValue('0');
+    await expect(element(by.id(offIndicatorID))).toHaveText('Off');
+  });
+});
diff --git a/RNTester/e2e/__tests__/Touchable-test.js b/RNTester/e2e/__tests__/Touchable-test.js
new file mode 100644
index 00000000000000..6ac25fdeca7381
--- /dev/null
+++ b/RNTester/e2e/__tests__/Touchable-test.js
@@ -0,0 +1,72 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @format
+ */
+
+/* global element, by, expect */
+
+describe('Touchable', () => {
+  beforeAll(async () => {
+    await element(by.id('explorer_search')).replaceText('<Touchable*');
+    await element(
+      by.label('<Touchable*> and onPress Touchable and onPress examples.'),
+    ).tap();
+  });
+
+  afterAll(async () => {
+    //TODO - remove app state persistency, till then, we must go back to main screen,
+    await element(by.label('Back')).tap();
+  });
+
+  it('Touchable Highlight should be tappable', async () => {
+    const buttonID = 'touchable_highlight_image_button';
+    const button2ID = 'touchable_highlight_text_button';
+    const consoleID = 'touchable_highlight_console';
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText(
+      'TouchableHighlight onPress',
+    );
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText(
+      '2x TouchableHighlight onPress',
+    );
+
+    await element(by.id(button2ID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText(
+      '3x TouchableHighlight onPress',
+    );
+  });
+
+  it('Touchable Without Feedback should be tappable', async () => {
+    const buttonID = 'touchable_without_feedback_button';
+    const consoleID = 'touchable_without_feedback_console';
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText(
+      'TouchableWithoutFeedback onPress',
+    );
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText(
+      '2x TouchableWithoutFeedback onPress',
+    );
+  });
+
+  it('Text should be tappable', async () => {
+    const buttonID = 'tappable_text';
+    const consoleID = 'tappable_text_console';
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText('text onPress');
+
+    await element(by.id(buttonID)).tap();
+    await expect(element(by.id(consoleID))).toHaveText('2x text onPress');
+  });
+});
diff --git a/RNTester/e2e/init.js b/RNTester/e2e/init.js
index 5d6e7a9a56d7f4..051d52567256ea 100644
--- a/RNTester/e2e/init.js
+++ b/RNTester/e2e/init.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/e2e/sanity.test.js b/RNTester/e2e/sanity.test.js
index 0078a90b4fa59e..366218c2e6d0ff 100644
--- a/RNTester/e2e/sanity.test.js
+++ b/RNTester/e2e/sanity.test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 describe('Sanity', () => {
   beforeEach(async () => {
     await device.reloadReactNative();
-    await element(by.label(`<Button> Simple React Native button component.`)).tap();
+    await element(by.label('<Button> Simple React Native button component.')).tap();
   });
 
   afterEach(async () => {
@@ -30,7 +30,7 @@ describe('Sanity', () => {
     await element(by.text('OK')).tap();
   });
 
-  it(`Two buttons with JustifyContent:'space-between' should be tappable`, async () => {
+  it("Two buttons with JustifyContent:'space-between' should be tappable", async () => {
     await element(by.label('This looks great!')).tap();
     await expect(element(by.text('Left has been pressed!'))).toBeVisible();
     await element(by.text('OK')).tap();
diff --git a/RNTester/js/ARTExample.js b/RNTester/js/ARTExample.js
index 1a0745ec43f210..2a79591cb1429a 100644
--- a/RNTester/js/ARTExample.js
+++ b/RNTester/js/ARTExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,13 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {ART, Platform, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {ART, Platform, View} = ReactNative;
 
-const {Surface, Path, Group, Transform, Shape} = ART;
+const {Surface, Path, Group, Shape} = ART;
 
-var scale = Platform.isTV ? 4 : 1;
+const scale = Platform.isTV ? 4 : 1;
 
 class ARTExample extends React.Component<{}> {
   render() {
diff --git a/RNTester/js/AccessibilityAndroidExample.android.js b/RNTester/js/AccessibilityAndroidExample.android.js
index cc52876963c13b..0989f9f62d0780 100644
--- a/RNTester/js/AccessibilityAndroidExample.android.js
+++ b/RNTester/js/AccessibilityAndroidExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   AccessibilityInfo,
   StyleSheet,
   Text,
@@ -20,10 +20,10 @@ var {
   TouchableWithoutFeedback,
 } = ReactNative;
 
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
 
-var importantForAccessibilityValues = [
+const importantForAccessibilityValues = [
   'auto',
   'yes',
   'no',
@@ -293,7 +293,7 @@ class AccessibilityAndroidExample extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   embedded: {
     backgroundColor: 'yellow',
     padding: 10,
diff --git a/RNTester/js/AccessibilityIOSExample.js b/RNTester/js/AccessibilityIOSExample.js
index 67ebc4b378f232..96ed8fc39fc31c 100644
--- a/RNTester/js/AccessibilityIOSExample.js
+++ b/RNTester/js/AccessibilityIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,24 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {AccessibilityInfo, Text, View, TouchableOpacity} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {AccessibilityInfo, Text, View, TouchableOpacity, Alert} = ReactNative;
 
 class AccessibilityIOSExample extends React.Component<{}> {
   render() {
     return (
       <View>
         <View
-          onAccessibilityTap={() => alert('onAccessibilityTap success')}
+          onAccessibilityTap={() =>
+            Alert.alert('Alert', 'onAccessibilityTap success')
+          }
           accessible={true}>
           <Text>Accessibility normal tap example</Text>
         </View>
-        <View onMagicTap={() => alert('onMagicTap success')} accessible={true}>
+        <View
+          onMagicTap={() => Alert.alert('Alert', 'onMagicTap success')}
+          accessible={true}>
           <Text>Accessibility magic tap example</Text>
         </View>
         <View accessibilityLabel="Some announcement" accessible={true}>
diff --git a/RNTester/js/ActionSheetIOSExample.js b/RNTester/js/ActionSheetIOSExample.js
index 2c1788864c943f..1a524859613a7d 100644
--- a/RNTester/js/ActionSheetIOSExample.js
+++ b/RNTester/js/ActionSheetIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,20 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {ActionSheetIOS, StyleSheet, takeSnapshot, Text, View} = ReactNative;
-
-var BUTTONS = ['Option 0', 'Option 1', 'Option 2', 'Delete', 'Cancel'];
-var DESTRUCTIVE_INDEX = 3;
-var CANCEL_INDEX = 4;
+const React = require('react');
+const ReactNative = require('react-native');
+const {
+  ActionSheetIOS,
+  StyleSheet,
+  takeSnapshot,
+  Text,
+  View,
+  Alert,
+} = ReactNative;
+
+const BUTTONS = ['Option 0', 'Option 1', 'Option 2', 'Delete', 'Cancel'];
+const DESTRUCTIVE_INDEX = 3;
+const CANCEL_INDEX = 4;
 
 class ActionSheetExample extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -106,9 +113,9 @@ class ShareActionSheetExample extends React.Component<
         subject: 'a subject to go in the email heading',
         excludedActivityTypes: ['com.apple.UIKit.activity.PostToTwitter'],
       },
-      error => alert(error),
+      error => Alert.alert('Error', error),
       (completed, method) => {
-        var text;
+        let text;
         if (completed) {
           text = `Shared via ${method}`;
         } else {
@@ -146,9 +153,9 @@ class ShareScreenshotExample extends React.Component<{}, $FlowFixMeState> {
             url: uri,
             excludedActivityTypes: ['com.apple.UIKit.activity.PostToTwitter'],
           },
-          error => alert(error),
+          error => Alert.alert('Error', error),
           (completed, method) => {
-            var text;
+            let text;
             if (completed) {
               text = `Shared via ${method}`;
             } else {
@@ -158,11 +165,11 @@ class ShareScreenshotExample extends React.Component<{}, $FlowFixMeState> {
           },
         );
       })
-      .catch(error => alert(error));
+      .catch(error => Alert.alert('Error', error));
   };
 }
 
-var style = StyleSheet.create({
+const style = StyleSheet.create({
   button: {
     marginBottom: 10,
     fontWeight: '500',
diff --git a/RNTester/js/ActivityIndicatorExample.js b/RNTester/js/ActivityIndicatorExample.js
index e59726508c9063..68b90b2cb0b9f1 100644
--- a/RNTester/js/ActivityIndicatorExample.js
+++ b/RNTester/js/ActivityIndicatorExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,6 +26,9 @@ class ToggleAnimatingActivityIndicator extends Component<
 > {
   _timer: Timer;
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   constructor(props) {
     super(props);
     this.state = {
@@ -88,9 +91,7 @@ exports.examples = [
       return (
         <View>
           <ActivityIndicator style={[styles.centering]} />
-          <ActivityIndicator
-            style={[styles.centering, {backgroundColor: '#eeeeee'}]}
-          />
+          <ActivityIndicator style={[styles.centering, styles.gray]} />
         </View>
       );
     },
diff --git a/RNTester/js/AlertExample.js b/RNTester/js/AlertExample.js
index b573356919d898..fd888a73afb955 100644
--- a/RNTester/js/AlertExample.js
+++ b/RNTester/js/AlertExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,14 +9,14 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Alert, StyleSheet, Text, TouchableHighlight, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Alert, StyleSheet, Text, TouchableHighlight, View} = ReactNative;
 
-var RNTesterBlock = require('./RNTesterBlock');
+const RNTesterBlock = require('./RNTesterBlock');
 
 // corporate ipsum > lorem ipsum
-var alertMessage =
+const alertMessage =
   'Credibly reintermediate next-generation potentialities after goal-oriented ' +
   'catalysts for change. Dynamically revolutionize.';
 
@@ -134,7 +134,7 @@ class AlertExample extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/AlertIOSExample.js b/RNTester/js/AlertIOSExample.js
index 4f58c00ada4d43..16868ce504a15b 100644
--- a/RNTester/js/AlertIOSExample.js
+++ b/RNTester/js/AlertIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,11 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, View, Text, TouchableHighlight, AlertIOS} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, View, Text, TouchableHighlight, AlertIOS} = ReactNative;
 
-var {SimpleAlertExampleBlock} = require('./AlertExample');
+const {SimpleAlertExampleBlock} = require('./AlertExample');
 
 exports.framework = 'React';
 exports.title = 'AlertIOS';
@@ -96,8 +96,8 @@ class PromptOptions extends React.Component<$FlowFixMeProps, any> {
   render() {
     return (
       <View>
-        <Text style={{marginBottom: 10}}>
-          <Text style={{fontWeight: 'bold'}}>Prompt value:</Text>{' '}
+        <Text style={styles.promptValue}>
+          <Text style={styles.promptValueLabel}>Prompt value:</Text>{' '}
           {this.state.promptValue}
         </Text>
 
@@ -180,7 +180,7 @@ class PromptOptions extends React.Component<$FlowFixMeProps, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
@@ -189,4 +189,10 @@ var styles = StyleSheet.create({
     backgroundColor: '#eeeeee',
     padding: 10,
   },
+  promptValue: {
+    marginBottom: 10,
+  },
+  promptValueLabel: {
+    fontWeight: 'bold',
+  },
 });
diff --git a/RNTester/js/AnimatedExample.js b/RNTester/js/AnimatedExample.js
index 490f70371696e7..1802d03a2719bc 100644
--- a/RNTester/js/AnimatedExample.js
+++ b/RNTester/js/AnimatedExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,10 +10,10 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, Easing, StyleSheet, Text, View} = ReactNative;
-var RNTesterButton = require('./RNTesterButton');
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, Easing, StyleSheet, Text, View} = ReactNative;
+const RNTesterButton = require('./RNTesterButton');
 
 exports.framework = 'React';
 exports.title = 'Animated - Examples';
@@ -59,6 +59,9 @@ exports.examples = [
         }
       }
       class FadeInExample extends React.Component<$FlowFixMeProps, any> {
+        /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.85 was deployed. To see the error, delete
+         * this comment and run Flow. */
         constructor(props) {
           super(props);
           this.state = {
@@ -158,7 +161,7 @@ exports.examples = [
         <View>
           <RNTesterButton
             onPress={() => {
-              var timing = Animated.timing;
+              const timing = Animated.timing;
               Animated.sequence([
                 // One after the other
                 timing(this.anims[0], {
@@ -243,7 +246,7 @@ exports.examples = [
           <Animated.Image
             source={require('./bunny.png')}
             style={[
-              {width: 70, height: 70},
+              styles.rotatingImage,
               {
                 transform: [
                   {
@@ -285,7 +288,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   content: {
     backgroundColor: 'deepskyblue',
     borderWidth: 1,
@@ -295,4 +298,8 @@ var styles = StyleSheet.create({
     borderRadius: 10,
     alignItems: 'center',
   },
+  rotatingImage: {
+    width: 70,
+    height: 70,
+  },
 });
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExApp.js b/RNTester/js/AnimatedGratuitousApp/AnExApp.js
index 5131f9641ca5d6..f9aa375a7d9677 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExApp.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,15 +10,15 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, LayoutAnimation, PanResponder, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, LayoutAnimation, PanResponder, StyleSheet, View} = ReactNative;
 
-var AnExSet = require('AnExSet');
+const AnExSet = require('AnExSet');
 
-var CIRCLE_SIZE = 80;
-var CIRCLE_MARGIN = 18;
-var NUM_CIRCLES = 30;
+const CIRCLE_SIZE = 80;
+const CIRCLE_MARGIN = 18;
+const NUM_CIRCLES = 30;
 
 class Circle extends React.Component<any, any> {
   longTimer: number;
@@ -37,7 +37,7 @@ class Circle extends React.Component<any, any> {
   }
 
   _onLongPress(): void {
-    var config = {tension: 40, friction: 3};
+    const config = {tension: 40, friction: 3};
     this.state.pan.addListener(value => {
       // Async listener for state changes  (step1: uncomment)
       this.props.onMove && this.props.onMove(value);
@@ -77,9 +77,11 @@ class Circle extends React.Component<any, any> {
   }
 
   render(): React.Node {
+    let handlers;
+    let dragStyle = null;
     if (this.state.panResponder) {
-      var handlers = this.state.panResponder.panHandlers;
-      var dragStyle = {
+      handlers = this.state.panResponder.panHandlers;
+      dragStyle = {
         //  Used to position while dragging
         position: 'absolute', //  Hoist out of layout                    (step1: uncomment)
         ...this.state.pan.getLayout(), //  Convenience converter                  (step1: uncomment)
@@ -106,7 +108,7 @@ class Circle extends React.Component<any, any> {
         },
       };
     }
-    var animatedStyle: Object = {
+    const animatedStyle: Object = {
       shadowOpacity: this.state.pop, // no need for interpolation            (step2d: uncomment)
       transform: [
         {
@@ -117,11 +119,12 @@ class Circle extends React.Component<any, any> {
         },
       ],
     };
-    var openVal = this.props.openVal;
+    const openVal = this.props.openVal;
+    let innerOpenStyle = null;
     if (this.props.dummy) {
       animatedStyle.opacity = 0;
     } else if (this.state.isActive) {
-      var innerOpenStyle = [
+      innerOpenStyle = [
         styles.open,
         {
           // (step4: uncomment)
@@ -175,7 +178,7 @@ class Circle extends React.Component<any, any> {
     );
   }
   _toggleIsActive(velocity) {
-    var config = {tension: 30, friction: 7};
+    const config = {tension: 30, friction: 7};
     if (this.state.isActive) {
       Animated.spring(this.props.openVal, {toValue: 0, ...config}).start(() => {
         // (step4: uncomment)
@@ -200,8 +203,8 @@ class AnExApp extends React.Component<any, any> {
   _onMove: (position: Point) => void;
   constructor(props: any): void {
     super(props);
-    var keys = [];
-    for (var idx = 0; idx < NUM_CIRCLES; idx++) {
+    const keys = [];
+    for (let idx = 0; idx < NUM_CIRCLES; idx++) {
       keys.push('E' + idx);
     }
     this.state = {
@@ -213,13 +216,14 @@ class AnExApp extends React.Component<any, any> {
   }
 
   render(): React.Node {
-    var circles = this.state.keys.map((key, idx) => {
+    const circles = this.state.keys.map((key, idx) => {
       if (key === this.state.activeKey) {
         return <Circle key={key + 'd'} dummy={true} />;
       } else {
+        let onLayout = null;
         if (!this.state.restLayouts[idx]) {
-          var onLayout = function(index, e) {
-            var layout = e.nativeEvent.layout;
+          onLayout = function(index, e) {
+            const layout = e.nativeEvent.layout;
             this.setState(state => {
               state.restLayouts[index] = layout;
               return state;
@@ -274,7 +278,7 @@ class AnExApp extends React.Component<any, any> {
   }
 
   _onMove(position: Point): void {
-    var newKeys = moveToClosest(this.state, position);
+    const newKeys = moveToClosest(this.state, position);
     if (newKeys !== this.state.keys) {
       LayoutAnimation.easeInEaseOut(); // animates layout update as one batch (step3: uncomment)
       this.setState({keys: newKeys});
@@ -284,18 +288,18 @@ class AnExApp extends React.Component<any, any> {
 
 type Point = {x: number, y: number};
 function distance(p1: Point, p2: Point): number {
-  var dx = p1.x - p2.x;
-  var dy = p1.y - p2.y;
+  const dx = p1.x - p2.x;
+  const dy = p1.y - p2.y;
   return dx * dx + dy * dy;
 }
 
 function moveToClosest({activeKey, keys, restLayouts}, position) {
-  var activeIdx = -1;
-  var closestIdx = activeIdx;
-  var minDist = Infinity;
-  var newKeys = [];
+  const activeIdx = -1;
+  let closestIdx = activeIdx;
+  let minDist = Infinity;
+  const newKeys = [];
   keys.forEach((key, idx) => {
-    var dist = distance(position, restLayouts[idx]);
+    const dist = distance(position, restLayouts[idx]);
     if (key === activeKey) {
       idx = activeIdx;
     } else {
@@ -314,7 +318,7 @@ function moveToClosest({activeKey, keys, restLayouts}, position) {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
   },
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExBobble.js b/RNTester/js/AnimatedGratuitousApp/AnExBobble.js
index 14d4c839abe7c9..4be52c650f41b8 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExBobble.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExBobble.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,14 +10,14 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, PanResponder, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, PanResponder, StyleSheet, View} = ReactNative;
 
-var NUM_BOBBLES = 5;
-var RAD_EACH = Math.PI / 2 / (NUM_BOBBLES - 2);
-var RADIUS = 160;
-var BOBBLE_SPOTS = [...Array(NUM_BOBBLES)].map((_, i) => {
+const NUM_BOBBLES = 5;
+const RAD_EACH = Math.PI / 2 / (NUM_BOBBLES - 2);
+const RADIUS = 160;
+const BOBBLE_SPOTS = [...Array(NUM_BOBBLES)].map((_, i) => {
   // static positions
   return i === 0
     ? {x: 0, y: 0}
@@ -36,12 +36,12 @@ class AnExBobble extends React.Component<Object, any> {
       return new Animated.ValueXY();
     });
     this.state.selectedBobble = null;
-    var bobblePanListener = (e, gestureState) => {
+    const bobblePanListener = (e, gestureState) => {
       // async events => change selection
-      var newSelected = computeNewSelected(gestureState);
+      const newSelected = computeNewSelected(gestureState);
       if (this.state.selectedBobble !== newSelected) {
         if (this.state.selectedBobble !== null) {
-          var restSpot = BOBBLE_SPOTS[this.state.selectedBobble];
+          const restSpot = BOBBLE_SPOTS[this.state.selectedBobble];
           Animated.spring(this.state.bobbles[this.state.selectedBobble], {
             toValue: restSpot, // return previously selected bobble to rest position
           }).start();
@@ -54,7 +54,7 @@ class AnExBobble extends React.Component<Object, any> {
         this.state.selectedBobble = newSelected;
       }
     };
-    var releaseBobble = () => {
+    const releaseBobble = () => {
       this.state.bobbles.forEach((bobble, i) => {
         Animated.spring(bobble, {
           toValue: {x: 0, y: 0}, // all bobbles return to zero
@@ -84,8 +84,8 @@ class AnExBobble extends React.Component<Object, any> {
     return (
       <View style={styles.bobbleContainer}>
         {this.state.bobbles.map((_, i) => {
-          var j = this.state.bobbles.length - i - 1; // reverse so lead on top
-          var handlers = j > 0 ? {} : this.state.bobbleResponder.panHandlers;
+          const j = this.state.bobbles.length - i - 1; // reverse so lead on top
+          const handlers = j > 0 ? {} : this.state.bobbleResponder.panHandlers;
           return (
             <Animated.Image
               {...handlers}
@@ -106,7 +106,7 @@ class AnExBobble extends React.Component<Object, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   circle: {
     position: 'absolute',
     height: 60,
@@ -125,14 +125,14 @@ var styles = StyleSheet.create({
 });
 
 function computeNewSelected(gestureState: Object): ?number {
-  var {dx, dy} = gestureState;
-  var minDist = Infinity;
-  var newSelected = null;
-  var pointRadius = Math.sqrt(dx * dx + dy * dy);
+  const {dx, dy} = gestureState;
+  let minDist = Infinity;
+  let newSelected = null;
+  const pointRadius = Math.sqrt(dx * dx + dy * dy);
   if (Math.abs(RADIUS - pointRadius) < 80) {
     BOBBLE_SPOTS.forEach((spot, idx) => {
-      var delta = {x: spot.x - dx, y: spot.y - dy};
-      var dist = delta.x * delta.x + delta.y * delta.y;
+      const delta = {x: spot.x - dx, y: spot.y - dy};
+      const dist = delta.x * delta.x + delta.y * delta.y;
       if (dist < minDist) {
         minDist = dist;
         newSelected = idx;
@@ -143,11 +143,11 @@ function computeNewSelected(gestureState: Object): ?number {
 }
 
 function randColor(): string {
-  var colors = [0, 1, 2].map(() => Math.floor(Math.random() * 150 + 100));
+  const colors = [0, 1, 2].map(() => Math.floor(Math.random() * 150 + 100));
   return 'rgb(' + colors.join(',') + ')';
 }
 
-var BOBBLE_IMGS = [
+const BOBBLE_IMGS = [
   'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/t39.1997-6/10173489_272703316237267_1025826781_n.png',
   'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/l/t39.1997-6/p240x240/851578_631487400212668_2087073502_n.png',
   'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/t39.1997-6/p240x240/851583_654446917903722_178118452_n.png',
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExChained.js b/RNTester/js/AnimatedGratuitousApp/AnExChained.js
index b3c09570362a51..91e85e0b1714d6 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExChained.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExChained.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, PanResponder, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, PanResponder, StyleSheet, View} = ReactNative;
 
 class AnExChained extends React.Component<Object, any> {
   constructor(props: Object) {
@@ -20,17 +20,17 @@ class AnExChained extends React.Component<Object, any> {
     this.state = {
       stickers: [new Animated.ValueXY()], // 1 leader
     };
-    var stickerConfig = {tension: 2, friction: 3}; // soft spring
-    for (var i = 0; i < 4; i++) {
+    const stickerConfig = {tension: 2, friction: 3}; // soft spring
+    for (let i = 0; i < 4; i++) {
       // 4 followers
-      var sticker = new Animated.ValueXY();
+      const sticker = new Animated.ValueXY();
       Animated.spring(sticker, {
         ...stickerConfig,
         toValue: this.state.stickers[i], // Animated toValue's are tracked
       }).start();
       this.state.stickers.push(sticker); // push on the followers
     }
-    var releaseChain = (e, gestureState) => {
+    const releaseChain = (e, gestureState) => {
       this.state.stickers[0].flattenOffset(); // merges offset into value and resets
       Animated.sequence([
         // spring to start after decay finishes
@@ -64,8 +64,8 @@ class AnExChained extends React.Component<Object, any> {
     return (
       <View style={styles.chained}>
         {this.state.stickers.map((_, i) => {
-          var j = this.state.stickers.length - i - 1; // reverse so leader is on top
-          var handlers = j === 0 ? this.state.chainResponder.panHandlers : {};
+          const j = this.state.stickers.length - i - 1; // reverse so leader is on top
+          const handlers = j === 0 ? this.state.chainResponder.panHandlers : {};
           return (
             <Animated.Image
               {...handlers}
@@ -85,7 +85,7 @@ class AnExChained extends React.Component<Object, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   chained: {
     alignSelf: 'flex-end',
     top: -160,
@@ -99,7 +99,7 @@ var styles = StyleSheet.create({
   },
 });
 
-var CHAIN_IMGS = [
+const CHAIN_IMGS = [
   require('../hawk.png'),
   require('../bunny.png'),
   require('../relay.png'),
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExScroll.js b/RNTester/js/AnimatedGratuitousApp/AnExScroll.js
index 0dde543196d7f3..1920bc245e9fd6 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExScroll.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExScroll.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,15 +10,15 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, Image, ScrollView, StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, Image, ScrollView, StyleSheet, Text, View} = ReactNative;
 
 class AnExScroll extends React.Component<$FlowFixMeProps, any> {
   state: any = {scrollX: new Animated.Value(0)};
 
   render() {
-    var width = this.props.panelWidth;
+    const width = this.props.panelWidth;
     return (
       <View style={styles.container}>
         <ScrollView
@@ -80,7 +80,7 @@ class AnExScroll extends React.Component<$FlowFixMeProps, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     backgroundColor: 'transparent',
     flex: 1,
@@ -104,11 +104,11 @@ var styles = StyleSheet.create({
   },
 });
 
-var HAWK_PIC = {
+const HAWK_PIC = {
   uri:
     'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/t39.1997-6/10734304_1562225620659674_837511701_n.png',
 };
-var BUNNY_PIC = {
+const BUNNY_PIC = {
   uri:
     'https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/t39.1997-6/851564_531111380292237_1898871086_n.png',
 };
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExSet.js b/RNTester/js/AnimatedGratuitousApp/AnExSet.js
index 83bc5bfdb5f3f4..1d13a2d8601a0b 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExSet.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExSet.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,20 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, PanResponder, StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, PanResponder, StyleSheet, Text, View} = ReactNative;
 
-var AnExBobble = require('./AnExBobble');
-var AnExChained = require('./AnExChained');
-var AnExScroll = require('./AnExScroll');
-var AnExTilt = require('./AnExTilt');
+const AnExBobble = require('./AnExBobble');
+const AnExChained = require('./AnExChained');
+const AnExScroll = require('./AnExScroll');
+const AnExTilt = require('./AnExTilt');
 
 class AnExSet extends React.Component<Object, any> {
   constructor(props: Object) {
     super(props);
     function randColor() {
-      var colors = [0, 1, 2].map(() => Math.floor(Math.random() * 150 + 100));
+      const colors = [0, 1, 2].map(() => Math.floor(Math.random() * 150 + 100));
       return 'rgb(' + colors.join(',') + ')';
     }
     this.state = {
@@ -32,7 +32,7 @@ class AnExSet extends React.Component<Object, any> {
     };
   }
   render(): React.Node {
-    var backgroundColor = this.props.openVal
+    const backgroundColor = this.props.openVal
       ? this.props.openVal.interpolate({
           inputRange: [0, 1],
           outputRange: [
@@ -41,7 +41,7 @@ class AnExSet extends React.Component<Object, any> {
           ],
         })
       : this.state.closeColor;
-    var panelWidth =
+    const panelWidth =
       (this.props.containerLayout && this.props.containerLayout.width) || 320;
     return (
       <View style={styles.container}>
@@ -98,7 +98,7 @@ class AnExSet extends React.Component<Object, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
   },
diff --git a/RNTester/js/AnimatedGratuitousApp/AnExTilt.js b/RNTester/js/AnimatedGratuitousApp/AnExTilt.js
index dbd823843486b5..bcc389d8747a74 100644
--- a/RNTester/js/AnimatedGratuitousApp/AnExTilt.js
+++ b/RNTester/js/AnimatedGratuitousApp/AnExTilt.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, PanResponder, StyleSheet} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, PanResponder, StyleSheet} = ReactNative;
 
 class AnExTilt extends React.Component<Object, any> {
   constructor(props: Object) {
@@ -37,7 +37,7 @@ class AnExTilt extends React.Component<Object, any> {
         [null, {dx: this.state.panX}], // panX is linked to the gesture
       ),
       onPanResponderRelease: (e, gestureState) => {
-        var toValue = 0;
+        let toValue = 0;
         if (gestureState.dx > 100) {
           toValue = 500;
         } else if (gestureState.dx < -100) {
@@ -50,7 +50,7 @@ class AnExTilt extends React.Component<Object, any> {
           friction: 3,
         }).start();
         this.state.panX.removeAllListeners();
-        var id = this.state.panX.addListener(({value}) => {
+        const id = this.state.panX.addListener(({value}) => {
           // listen until offscreen
           if (Math.abs(value) > 400) {
             this.state.panX.removeListener(id); // offscreen, so stop listening
@@ -122,7 +122,7 @@ class AnExTilt extends React.Component<Object, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   tilt: {
     overflow: 'hidden',
     height: 200,
diff --git a/RNTester/js/AppStateExample.js b/RNTester/js/AppStateExample.js
index b4ed67c27ba907..4ea4949d5af275 100644
--- a/RNTester/js/AppStateExample.js
+++ b/RNTester/js/AppStateExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -39,7 +39,7 @@ class AppStateSubscription extends React.Component<
   };
 
   _handleAppStateChange = appState => {
-    var previousAppStates = this.state.previousAppStates.slice();
+    const previousAppStates = this.state.previousAppStates.slice();
     previousAppStates.push(this.state.appState);
     this.setState({
       appState,
diff --git a/RNTester/js/AssetScaledImageExample.js b/RNTester/js/AssetScaledImageExample.js
index 1cc618217f58c7..fb50653a1de54f 100644
--- a/RNTester/js/AssetScaledImageExample.js
+++ b/RNTester/js/AssetScaledImageExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,27 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Image, StyleSheet, View, ScrollView} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Image, StyleSheet, View, ScrollView} = ReactNative;
 
-class AssetScaledImageExample extends React.Component<
-  $FlowFixMeProps,
-  $FlowFixMeState,
-> {
+import type {PhotoIdentifier} from 'CameraRoll';
+
+type Props = $ReadOnly<{|
+  asset: PhotoIdentifier,
+|}>;
+
+type State = {|
+  asset: PhotoIdentifier,
+|};
+
+class AssetScaledImageExample extends React.Component<Props, State> {
   state = {
     asset: this.props.asset,
   };
 
   render() {
-    var image = this.state.asset.node.image;
+    const image = this.state.asset.node.image;
     return (
       <ScrollView>
         <View style={styles.row}>
@@ -43,17 +50,13 @@ class AssetScaledImageExample extends React.Component<
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     padding: 5,
     flex: 1,
     flexDirection: 'row',
     alignSelf: 'center',
   },
-  textColumn: {
-    flex: 1,
-    flexDirection: 'column',
-  },
   imageWide: {
     borderWidth: 1,
     borderColor: 'black',
diff --git a/RNTester/js/AsyncStorageExample.js b/RNTester/js/AsyncStorageExample.js
index 14b7780220464d..4c485ea17b6d37 100644
--- a/RNTester/js/AsyncStorageExample.js
+++ b/RNTester/js/AsyncStorageExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,13 +10,13 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {AsyncStorage, PickerIOS, Text, View} = ReactNative;
-var PickerItemIOS = PickerIOS.Item;
+const React = require('react');
+const ReactNative = require('react-native');
+const {AsyncStorage, PickerIOS, Text, View} = ReactNative;
+const PickerItemIOS = PickerIOS.Item;
 
-var STORAGE_KEY = '@AsyncStorageExample:key';
-var COLORS = ['red', 'orange', 'yellow', 'green', 'blue'];
+const STORAGE_KEY = '@AsyncStorageExample:key';
+const COLORS = ['red', 'orange', 'yellow', 'green', 'blue'];
 
 class BasicStorageExample extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -30,7 +30,7 @@ class BasicStorageExample extends React.Component<{}, $FlowFixMeState> {
 
   _loadInitialState = async () => {
     try {
-      var value = await AsyncStorage.getItem(STORAGE_KEY);
+      const value = await AsyncStorage.getItem(STORAGE_KEY);
       if (value !== null) {
         this.setState({selectedValue: value});
         this._appendMessage('Recovered selection from disk: ' + value);
@@ -43,7 +43,7 @@ class BasicStorageExample extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var color = this.state.selectedValue;
+    const color = this.state.selectedValue;
     return (
       <View>
         <PickerIOS selectedValue={color} onValueChange={this._onValueChange}>
@@ -55,11 +55,11 @@ class BasicStorageExample extends React.Component<{}, $FlowFixMeState> {
           {'Selected: '}
           <Text style={{color}}>{this.state.selectedValue}</Text>
         </Text>
-        <Text> </Text>
+        <Text />
         <Text onPress={this._removeStorage}>
           Press here to remove from storage.
         </Text>
-        <Text> </Text>
+        <Text />
         <Text>Messages:</Text>
         {this.state.messages.map(m => <Text key={m}>{m}</Text>)}
       </View>
diff --git a/RNTester/js/BorderExample.js b/RNTester/js/BorderExample.js
index e4b00b2fdbe92a..1cc2c693890160 100644
--- a/RNTester/js/BorderExample.js
+++ b/RNTester/js/BorderExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,15 +9,18 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, View} = ReactNative;
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   box: {
     width: 100,
     height: 100,
   },
+  wrapper: {
+    flexDirection: 'row',
+  },
   border1: {
     borderWidth: 10,
     borderColor: 'brown',
@@ -92,6 +95,18 @@ var styles = StyleSheet.create({
     marginRight: 10,
     backgroundColor: 'lightgrey',
   },
+  border8Top: {
+    borderTopWidth: 5,
+  },
+  border8Left: {
+    borderLeftWidth: 5,
+  },
+  border8Bottom: {
+    borderBottomWidth: 5,
+  },
+  border8Right: {
+    borderRightWidth: 5,
+  },
   border9: {
     borderWidth: 10,
     borderTopLeftRadius: 10,
@@ -232,11 +247,11 @@ exports.examples = [
     description: 'top, left, bottom right',
     render() {
       return (
-        <View style={{flexDirection: 'row'}}>
-          <View style={[styles.box, styles.border8, {borderTopWidth: 5}]} />
-          <View style={[styles.box, styles.border8, {borderLeftWidth: 5}]} />
-          <View style={[styles.box, styles.border8, {borderBottomWidth: 5}]} />
-          <View style={[styles.box, styles.border8, {borderRightWidth: 5}]} />
+        <View style={styles.wrapper}>
+          <View style={[styles.box, styles.border8, styles.border8Top]} />
+          <View style={[styles.box, styles.border8, styles.border8Left]} />
+          <View style={[styles.box, styles.border8, styles.border8Bottom]} />
+          <View style={[styles.box, styles.border8, styles.border8Right]} />
         </View>
       );
     },
diff --git a/RNTester/js/BoxShadowExample.js b/RNTester/js/BoxShadowExample.js
index 42fe0aaad5aec2..2996d063e73d5c 100644
--- a/RNTester/js/BoxShadowExample.js
+++ b/RNTester/js/BoxShadowExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,11 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Image, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Image, StyleSheet, View} = ReactNative;
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   box: {
     width: 100,
     height: 100,
@@ -30,6 +30,23 @@ var styles = StyleSheet.create({
     shadowRadius: 0,
     shadowOffset: {width: 3, height: 3},
   },
+  shadowShaped: {
+    borderRadius: 50,
+  },
+  shadowImage: {
+    borderWidth: 0,
+    overflow: 'visible',
+  },
+  shadowChild: {
+    backgroundColor: 'transparent',
+  },
+  shadowChildBox: {
+    width: 80,
+    height: 80,
+    borderRadius: 40,
+    margin: 8,
+    backgroundColor: 'red',
+  },
 });
 
 exports.title = 'Box Shadow';
@@ -54,7 +71,7 @@ exports.examples = [
     title: 'Shaped shadow',
     description: 'borderRadius: 50',
     render() {
-      return <View style={[styles.box, styles.shadow1, {borderRadius: 50}]} />;
+      return <View style={[styles.box, styles.shadow1, styles.shadowShaped]} />;
     },
   },
   {
@@ -64,11 +81,7 @@ exports.examples = [
       return (
         <Image
           source={require('./hawk.png')}
-          style={[
-            styles.box,
-            styles.shadow1,
-            {borderWidth: 0, overflow: 'visible'},
-          ]}
+          style={[styles.box, styles.shadow1, styles.shadowImage]}
         />
       );
     },
@@ -79,24 +92,8 @@ exports.examples = [
       'For views without an opaque background color, shadow will be derived from the subviews.',
     render() {
       return (
-        <View
-          style={[
-            styles.box,
-            styles.shadow1,
-            {backgroundColor: 'transparent'},
-          ]}>
-          <View
-            style={[
-              styles.box,
-              {
-                width: 80,
-                height: 80,
-                borderRadius: 40,
-                margin: 8,
-                backgroundColor: 'red',
-              },
-            ]}
-          />
+        <View style={[styles.box, styles.shadow1, styles.shadowChild]}>
+          <View style={[styles.box, styles.shadowChildBox]} />
         </View>
       );
     },
diff --git a/RNTester/js/ButtonExample.js b/RNTester/js/ButtonExample.js
index 6d93b8286e2f82..4892947c4844d1 100644
--- a/RNTester/js/ButtonExample.js
+++ b/RNTester/js/ButtonExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 
 const React = require('react');
 const ReactNative = require('react-native');
-const {Alert, Button, View} = ReactNative;
+const {Alert, Button, View, StyleSheet} = ReactNative;
 
 function onButtonPress(buttonName) {
   Alert.alert(`${buttonName} has been pressed!`);
@@ -63,7 +63,7 @@ exports.examples = [
       'This layout strategy lets the title define the width of ' + 'the button',
     render: function() {
       return (
-        <View style={{flexDirection: 'row', justifyContent: 'space-between'}}>
+        <View style={styles.container}>
           <Button
             onPress={() => onButtonPress('Left')}
             title="This looks great!"
@@ -94,3 +94,10 @@ exports.examples = [
     },
   },
 ];
+
+const styles = StyleSheet.create({
+  container: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+  },
+});
diff --git a/RNTester/js/CameraRollExample.js b/RNTester/js/CameraRollExample.js
index f289a2b610771f..322f73c9736622 100644
--- a/RNTester/js/CameraRollExample.js
+++ b/RNTester/js/CameraRollExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -28,16 +28,32 @@ const CameraRollView = require('./CameraRollView');
 
 const AssetScaledImageExampleView = require('./AssetScaledImageExample');
 
-class CameraRollExample extends React.Component<
-  $FlowFixMeProps,
-  $FlowFixMeState,
-> {
+import type {PhotoIdentifier, GroupTypes} from 'CameraRoll';
+
+type Props = $ReadOnly<{|
+  navigator?: ?Array<
+    $ReadOnly<{|
+      title: string,
+      component: Class<React.Component<any, any>>,
+      backButtonTitle: string,
+      passProps: $ReadOnly<{|asset: PhotoIdentifier|}>,
+    |}>,
+  >,
+|}>;
+
+type State = {|
+  groupTypes: GroupTypes,
+  sliderValue: number,
+  bigImages: boolean,
+|};
+
+class CameraRollExample extends React.Component<Props, State> {
   state = {
     groupTypes: 'SavedPhotos',
     sliderValue: 1,
     bigImages: true,
   };
-  _cameraRollView: ?CameraRollView;
+  _cameraRollView: ?React.ElementRef<typeof CameraRollView>;
   render() {
     return (
       <View>
@@ -74,7 +90,7 @@ class CameraRollExample extends React.Component<
     }
   }
 
-  _renderImage = asset => {
+  _renderImage = (asset: PhotoIdentifier) => {
     const imageSize = this.state.bigImages ? 150 : 75;
     const imageStyle = [styles.image, {width: imageSize, height: imageSize}];
     const {location} = asset.node;
@@ -82,7 +98,9 @@ class CameraRollExample extends React.Component<
       ? JSON.stringify(location)
       : 'Unknown location';
     return (
-      <TouchableOpacity key={asset} onPress={this.loadAsset.bind(this, asset)}>
+      <TouchableOpacity
+        key={asset.node.image.uri}
+        onPress={this.loadAsset.bind(this, asset)}>
         <View style={styles.row}>
           <Image source={asset.node.image} style={imageStyle} />
           <View style={styles.info}>
@@ -135,7 +153,7 @@ exports.description =
 exports.examples = [
   {
     title: 'Photos',
-    render(): React.Element<any> {
+    render(): React.Node {
       return <CameraRollExample />;
     },
   },
diff --git a/RNTester/js/CameraRollView.js b/RNTester/js/CameraRollView.js
index 1568585ea89cf4..159edb7d8e992b 100644
--- a/RNTester/js/CameraRollView.js
+++ b/RNTester/js/CameraRollView.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-const PropTypes = require('prop-types');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   ActivityIndicator,
   Alert,
   CameraRoll,
@@ -25,105 +23,123 @@ var {
   StyleSheet,
   View,
 } = ReactNative;
+const ListViewDataSource = require('ListViewDataSource');
 
-var groupByEveryN = require('groupByEveryN');
-var logError = require('logError');
+const groupByEveryN = require('groupByEveryN');
+const logError = require('logError');
 
-var propTypes = {
+import type {
+  PhotoIdentifier,
+  PhotoIdentifiersPage,
+  GetPhotosParams,
+} from 'CameraRoll';
+
+function rowHasChanged<T>(r1: Array<T>, r2: Array<T>): boolean {
+  if (r1.length !== r2.length) {
+    return true;
+  }
+
+  for (let i = 0; i < r1.length; i++) {
+    if (r1[i] !== r2[i]) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+type Props = $ReadOnly<{|
   /**
    * The group where the photos will be fetched from. Possible
    * values are 'Album', 'All', 'Event', 'Faces', 'Library', 'PhotoStream'
    * and SavedPhotos.
    */
-  groupTypes: PropTypes.oneOf([
-    'Album',
-    'All',
-    'Event',
-    'Faces',
-    'Library',
-    'PhotoStream',
-    'SavedPhotos',
-  ]),
+  groupTypes:
+    | 'Album'
+    | 'All'
+    | 'Event'
+    | 'Faces'
+    | 'Library'
+    | 'PhotoStream'
+    | 'SavedPhotos',
 
   /**
    * Number of images that will be fetched in one page.
    */
-  batchSize: PropTypes.number,
+  batchSize: number,
 
   /**
    * A function that takes a single image as a parameter and renders it.
    */
-  renderImage: PropTypes.func,
+  renderImage: PhotoIdentifier => React.Node,
 
   /**
    * imagesPerRow: Number of images to be shown in each row.
    */
-  imagesPerRow: PropTypes.number,
+
+  imagesPerRow: number,
 
   /**
    * The asset type, one of 'Photos', 'Videos' or 'All'
    */
-  assetType: PropTypes.oneOf(['Photos', 'Videos', 'All']),
-};
-
-var CameraRollView = createReactClass({
-  displayName: 'CameraRollView',
-  propTypes: propTypes,
-
-  getDefaultProps: function(): Object {
-    return {
-      groupTypes: 'SavedPhotos',
-      batchSize: 5,
-      imagesPerRow: 1,
-      assetType: 'Photos',
-      renderImage: function(asset) {
-        var imageSize = 150;
-        var imageStyle = [styles.image, {width: imageSize, height: imageSize}];
-        return <Image source={asset.node.image} style={imageStyle} />;
-      },
-    };
-  },
-
-  getInitialState: function() {
-    var ds = new ListView.DataSource({rowHasChanged: this._rowHasChanged});
-
+  assetType: 'Photos' | 'Videos' | 'All',
+|}>;
+
+type State = {|
+  assets: Array<PhotoIdentifier>,
+  lastCursor: ?string,
+  noMore: boolean,
+  loadingMore: boolean,
+  dataSource: ListViewDataSource,
+|};
+
+class CameraRollView extends React.Component<Props, State> {
+  static defaultProps = {
+    groupTypes: 'SavedPhotos',
+    batchSize: 5,
+    imagesPerRow: 1,
+    assetType: 'Photos',
+    renderImage: function(asset: PhotoIdentifier) {
+      const imageSize = 150;
+      const imageStyle = [styles.image, {width: imageSize, height: imageSize}];
+      return <Image source={asset.node.image} style={imageStyle} />;
+    },
+  };
+
+  state = this.getInitialState();
+
+  getInitialState() {
     return {
-      assets: ([]: Array<Image>),
-      groupTypes: this.props.groupTypes,
-      lastCursor: (null: ?string),
-      assetType: this.props.assetType,
+      assets: [],
+      lastCursor: null,
       noMore: false,
       loadingMore: false,
-      dataSource: ds,
+      dataSource: new ListView.DataSource({rowHasChanged: rowHasChanged}),
     };
-  },
+  }
 
   /**
    * This should be called when the image renderer is changed to tell the
    * component to re-render its assets.
    */
-  rendererChanged: function() {
-    var ds = new ListView.DataSource({rowHasChanged: this._rowHasChanged});
+  rendererChanged() {
+    const ds = new ListView.DataSource({rowHasChanged: rowHasChanged});
     this.state.dataSource = ds.cloneWithRows(
-      // $FlowFixMe(>=0.41.0)
       groupByEveryN(this.state.assets, this.props.imagesPerRow),
     );
-  },
+  }
 
-  componentDidMount: function() {
+  componentDidMount() {
     this.fetch();
-  },
+  }
 
-  /* $FlowFixMe(>=0.68.0 site=react_native_fb) This comment suppresses an error
-   * found when Flow v0.68 was deployed. To see the error delete this comment
-   * and run Flow. */
-  UNSAFE_componentWillReceiveProps: function(nextProps: {groupTypes?: string}) {
+  UNSAFE_componentWillReceiveProps(nextProps: Props) {
     if (this.props.groupTypes !== nextProps.groupTypes) {
       this.fetch(true);
     }
-  },
+  }
 
-  _fetch: async function(clear?: boolean) {
+  async _fetch(clear?: boolean) {
     if (clear) {
       this.setState(this.getInitialState(), this.fetch);
       return;
@@ -143,7 +159,7 @@ var CameraRollView = createReactClass({
       }
     }
 
-    const fetchParams: Object = {
+    const fetchParams: GetPhotosParams = {
       first: this.props.batchSize,
       groupTypes: this.props.groupTypes,
       assetType: this.props.assetType,
@@ -162,21 +178,21 @@ var CameraRollView = createReactClass({
     } catch (e) {
       logError(e);
     }
-  },
+  }
 
   /**
    * Fetches more images from the camera roll. If clear is set to true, it will
    * set the component to its initial state and re-fetch the images.
    */
-  fetch: function(clear?: boolean) {
+  fetch = (clear?: boolean) => {
     if (!this.state.loadingMore) {
       this.setState({loadingMore: true}, () => {
         this._fetch(clear);
       });
     }
-  },
+  };
 
-  render: function() {
+  render() {
     return (
       <ListView
         renderRow={this._renderRow}
@@ -187,49 +203,34 @@ var CameraRollView = createReactClass({
         enableEmptySections
       />
     );
-  },
-
-  _rowHasChanged: function(r1: Array<Image>, r2: Array<Image>): boolean {
-    if (r1.length !== r2.length) {
-      return true;
-    }
+  }
 
-    for (var i = 0; i < r1.length; i++) {
-      if (r1[i] !== r2[i]) {
-        return true;
-      }
-    }
-
-    return false;
-  },
-
-  _renderFooterSpinner: function() {
+  _renderFooterSpinner = () => {
     if (!this.state.noMore) {
       return <ActivityIndicator />;
     }
     return null;
-  },
+  };
 
   // rowData is an array of images
-  _renderRow: function(
-    rowData: Array<Image>,
+  _renderRow = (
+    rowData: Array<PhotoIdentifier>,
     sectionID: string,
     rowID: string,
-  ) {
-    var images = rowData.map(image => {
+  ) => {
+    const images = rowData.map(image => {
       if (image === null) {
         return null;
       }
-      // $FlowFixMe(>=0.41.0)
       return this.props.renderImage(image);
     });
 
     return <View style={styles.row}>{images}</View>;
-  },
+  };
 
-  _appendAssets: function(data: Object) {
-    var assets = data.edges;
-    var newState: Object = {loadingMore: false};
+  _appendAssets(data: PhotoIdentifiersPage) {
+    const assets = data.edges;
+    const newState: $Shape<State> = {loadingMore: false};
 
     if (!data.page_info.has_next_page) {
       newState.noMore = true;
@@ -239,36 +240,28 @@ var CameraRollView = createReactClass({
       newState.lastCursor = data.page_info.end_cursor;
       newState.assets = this.state.assets.concat(assets);
       newState.dataSource = this.state.dataSource.cloneWithRows(
-        // $FlowFixMe(>=0.41.0)
         groupByEveryN(newState.assets, this.props.imagesPerRow),
       );
     }
 
     this.setState(newState);
-  },
+  }
 
-  _onEndReached: function() {
+  _onEndReached = () => {
     if (!this.state.noMore) {
       this.fetch();
     }
-  },
-});
+  };
+}
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     flexDirection: 'row',
     flex: 1,
   },
-  url: {
-    fontSize: 9,
-    marginBottom: 14,
-  },
   image: {
     margin: 4,
   },
-  info: {
-    flex: 1,
-  },
   container: {
     flex: 1,
   },
diff --git a/RNTester/js/CheckBoxExample.js b/RNTester/js/CheckBoxExample.js
index 1ef830cabd1248..1b16231ef3331e 100644
--- a/RNTester/js/CheckBoxExample.js
+++ b/RNTester/js/CheckBoxExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,12 @@
  * @flow
  * @format
  */
+
 'use strict';
 
 const React = require('react');
 const ReactNative = require('react-native');
-const {CheckBox, Text, View} = ReactNative;
+const {CheckBox, Text, View, StyleSheet} = ReactNative;
 
 class BasicCheckBoxExample extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -24,7 +25,7 @@ class BasicCheckBoxExample extends React.Component<{}, $FlowFixMeState> {
       <View>
         <CheckBox
           onValueChange={value => this.setState({falseCheckBoxIsOn: value})}
-          style={{marginBottom: 10}}
+          style={styles.checkbox}
           value={this.state.falseCheckBoxIsOn}
         />
         <CheckBox
@@ -40,7 +41,7 @@ class DisabledCheckBoxExample extends React.Component<{}, $FlowFixMeState> {
   render() {
     return (
       <View>
-        <CheckBox disabled={true} style={{marginBottom: 10}} value={true} />
+        <CheckBox disabled={true} style={styles.checkbox} value={true} />
         <CheckBox disabled={true} value={false} />
       </View>
     );
@@ -55,16 +56,16 @@ class EventCheckBoxExample extends React.Component<{}, $FlowFixMeState> {
 
   render() {
     return (
-      <View style={{flexDirection: 'row', justifyContent: 'space-around'}}>
+      <View style={styles.container}>
         <View>
           <CheckBox
             onValueChange={value => this.setState({eventCheckBoxIsOn: value})}
-            style={{marginBottom: 10}}
+            style={styles.checkbox}
             value={this.state.eventCheckBoxIsOn}
           />
           <CheckBox
             onValueChange={value => this.setState({eventCheckBoxIsOn: value})}
-            style={{marginBottom: 10}}
+            style={styles.checkbox}
             value={this.state.eventCheckBoxIsOn}
           />
           <Text>{this.state.eventCheckBoxIsOn ? 'On' : 'Off'}</Text>
@@ -74,14 +75,14 @@ class EventCheckBoxExample extends React.Component<{}, $FlowFixMeState> {
             onValueChange={value =>
               this.setState({eventCheckBoxRegressionIsOn: value})
             }
-            style={{marginBottom: 10}}
+            style={styles.checkbox}
             value={this.state.eventCheckBoxRegressionIsOn}
           />
           <CheckBox
             onValueChange={value =>
               this.setState({eventCheckBoxRegressionIsOn: value})
             }
-            style={{marginBottom: 10}}
+            style={styles.checkbox}
             value={this.state.eventCheckBoxRegressionIsOn}
           />
           <Text>{this.state.eventCheckBoxRegressionIsOn ? 'On' : 'Off'}</Text>
@@ -122,3 +123,13 @@ exports.title = '<CheckBox>';
 exports.displayName = 'CheckBoxExample';
 exports.description = 'Native boolean input';
 exports.examples = examples;
+
+const styles = StyleSheet.create({
+  container: {
+    flexDirection: 'row',
+    justifyContent: 'space-around',
+  },
+  checkbox: {
+    marginBottom: 10,
+  },
+});
diff --git a/RNTester/js/ClipboardExample.js b/RNTester/js/ClipboardExample.js
index c8c74ac6a3805e..adc6f40a1dbb6c 100644
--- a/RNTester/js/ClipboardExample.js
+++ b/RNTester/js/ClipboardExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Clipboard, View, Text} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Clipboard, View, Text, StyleSheet} = ReactNative;
 
 class ClipboardExample extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -22,7 +22,7 @@ class ClipboardExample extends React.Component<{}, $FlowFixMeState> {
   _setClipboardContent = async () => {
     Clipboard.setString('Hello World');
     try {
-      var content = await Clipboard.getString();
+      const content = await Clipboard.getString();
       this.setState({content});
     } catch (e) {
       this.setState({content: e.message});
@@ -32,10 +32,10 @@ class ClipboardExample extends React.Component<{}, $FlowFixMeState> {
   render() {
     return (
       <View>
-        <Text onPress={this._setClipboardContent} style={{color: 'blue'}}>
+        <Text onPress={this._setClipboardContent} style={styles.label}>
           Tap to put "Hello World" in the clipboard
         </Text>
-        <Text style={{color: 'red', marginTop: 20}}>{this.state.content}</Text>
+        <Text style={styles.content}>{this.state.content}</Text>
       </View>
     );
   }
@@ -51,3 +51,13 @@ exports.examples = [
     },
   },
 ];
+
+const styles = StyleSheet.create({
+  label: {
+    color: 'blue',
+  },
+  content: {
+    color: 'red',
+    marginTop: 20,
+  },
+});
diff --git a/RNTester/js/DatePickerAndroidExample.js b/RNTester/js/DatePickerAndroidExample.js
index 96de36eae0371e..556bf43eacacaa 100644
--- a/RNTester/js/DatePickerAndroidExample.js
+++ b/RNTester/js/DatePickerAndroidExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,17 +9,17 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   DatePickerAndroid,
   StyleSheet,
   Text,
   TouchableWithoutFeedback,
 } = ReactNative;
 
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
 
 class DatePickerAndroidExample extends React.Component {
   static title = 'DatePickerAndroid';
@@ -44,12 +44,12 @@ class DatePickerAndroidExample extends React.Component {
 
   showPicker = async (stateKey, options) => {
     try {
-      var newState = {};
+      const newState = {};
       const {action, year, month, day} = await DatePickerAndroid.open(options);
       if (action === DatePickerAndroid.dismissedAction) {
         newState[stateKey + 'Text'] = 'dismissed';
       } else {
-        var date = new Date(year, month, day);
+        const date = new Date(year, month, day);
         newState[stateKey + 'Text'] = date.toLocaleDateString();
         newState[stateKey + 'Date'] = date;
       }
@@ -139,7 +139,7 @@ class DatePickerAndroidExample extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   text: {
     color: 'black',
   },
diff --git a/RNTester/js/DatePickerIOSExample.js b/RNTester/js/DatePickerIOSExample.js
index 228c600ceb4608..e2a6ce4733976f 100644
--- a/RNTester/js/DatePickerIOSExample.js
+++ b/RNTester/js/DatePickerIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {DatePickerIOS, StyleSheet, Text, TextInput, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {DatePickerIOS, StyleSheet, Text, TextInput, View} = ReactNative;
 
 class DatePickerExample extends React.Component<
   $FlowFixMeProps,
@@ -33,7 +33,7 @@ class DatePickerExample extends React.Component<
   };
 
   onTimezoneChange = event => {
-    var offset = parseInt(event.nativeEvent.text, 10);
+    const offset = parseInt(event.nativeEvent.text, 10);
     if (isNaN(offset)) {
       return;
     }
@@ -52,10 +52,13 @@ class DatePickerExample extends React.Component<
           backgroundColor: 'gray',
         }}>
         <WithLabel label="Value:">
-          <Text>
+          <Text testID="date-and-time-indicator">
             {this.state.date.toLocaleDateString() +
               ' ' +
-              this.state.date.toLocaleTimeString()}
+              this.state.date.toLocaleTimeString([], {
+                hour: '2-digit',
+                minute: '2-digit',
+              })}
           </Text>
         </WithLabel>
         <WithLabel label="Timezone:">
@@ -68,6 +71,7 @@ class DatePickerExample extends React.Component<
         </WithLabel>
         <Heading label="Date + time picker" />
         <DatePickerIOS
+          testID="date-and-time"
           date={this.state.date}
           mode="datetime"
           timeZoneOffsetInMinutes={this.state.timeZoneOffsetInHours * 60}
@@ -75,6 +79,7 @@ class DatePickerExample extends React.Component<
         />
         <Heading label="Date picker" />
         <DatePickerIOS
+          testID="date-only"
           date={this.state.date}
           mode="date"
           timeZoneOffsetInMinutes={this.state.timeZoneOffsetInHours * 60}
@@ -82,6 +87,7 @@ class DatePickerExample extends React.Component<
         />
         <Heading label="Time picker, 10-minute interval" />
         <DatePickerIOS
+          testID="time-only"
           date={this.state.date}
           mode="time"
           timeZoneOffsetInMinutes={this.state.timeZoneOffsetInHours * 60}
@@ -128,7 +134,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   textinput: {
     height: 26,
     width: 50,
diff --git a/RNTester/js/DimensionsExample.js b/RNTester/js/DimensionsExample.js
index 436968c3b34a9c..db90288656ae1b 100644
--- a/RNTester/js/DimensionsExample.js
+++ b/RNTester/js/DimensionsExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/ExampleTypes.js b/RNTester/js/ExampleTypes.js
index 5d7e2a55795a04..0bfe107c92b28b 100644
--- a/RNTester/js/ExampleTypes.js
+++ b/RNTester/js/ExampleTypes.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/FlatListExample.js b/RNTester/js/FlatListExample.js
index 5f401cba240c7b..bf580dbd18c657 100644
--- a/RNTester/js/FlatListExample.js
+++ b/RNTester/js/FlatListExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -133,7 +133,6 @@ class FlatListExample extends React.PureComponent<{}, $FlowFixMeState> {
             }
             keyboardShouldPersistTaps="always"
             keyboardDismissMode="on-drag"
-            legacyImplementation={false}
             numColumns={1}
             onEndReached={this._onEndReached}
             onRefresh={this._onRefresh}
diff --git a/RNTester/js/GeolocationExample.js b/RNTester/js/GeolocationExample.js
index 73b5deeed92904..8ed2182ecd9294 100644
--- a/RNTester/js/GeolocationExample.js
+++ b/RNTester/js/GeolocationExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, View, Alert} = ReactNative;
 
 exports.framework = 'React';
 exports.title = 'Geolocation';
@@ -38,14 +38,14 @@ class GeolocationExample extends React.Component<{}, $FlowFixMeState> {
   componentDidMount() {
     navigator.geolocation.getCurrentPosition(
       position => {
-        var initialPosition = JSON.stringify(position);
+        const initialPosition = JSON.stringify(position);
         this.setState({initialPosition});
       },
-      error => alert(JSON.stringify(error)),
+      error => Alert.alert('Error', JSON.stringify(error)),
       {enableHighAccuracy: true, timeout: 20000, maximumAge: 1000},
     );
     this.watchID = navigator.geolocation.watchPosition(position => {
-      var lastPosition = JSON.stringify(position);
+      const lastPosition = JSON.stringify(position);
       this.setState({lastPosition});
     });
   }
@@ -70,7 +70,7 @@ class GeolocationExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   title: {
     fontWeight: '500',
   },
diff --git a/RNTester/js/ImageCapInsetsExample.js b/RNTester/js/ImageCapInsetsExample.js
index 31a0cf68c8e48b..3d5150a60e82d1 100644
--- a/RNTester/js/ImageCapInsetsExample.js
+++ b/RNTester/js/ImageCapInsetsExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,12 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var Platform = require('Platform');
+const React = require('react');
+const ReactNative = require('react-native');
+const Platform = require('Platform');
 
-var nativeImageSource = require('nativeImageSource');
-var {Image, StyleSheet, Text, View} = ReactNative;
+const nativeImageSource = require('nativeImageSource');
+const {Image, StyleSheet, Text, View} = ReactNative;
 
 class ImageCapInsetsExample extends React.Component<{}> {
   render() {
@@ -59,23 +59,17 @@ class ImageCapInsetsExample extends React.Component<{}> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   background: {
     backgroundColor: '#F6F6F6',
     justifyContent: 'center',
     alignItems: 'center',
   },
-  horizontal: {
-    flexDirection: 'row',
-  },
   storyBackground: {
     width: 250,
     height: 150,
     borderWidth: 1,
   },
-  text: {
-    fontSize: 13.5,
-  },
 });
 
 module.exports = ImageCapInsetsExample;
diff --git a/RNTester/js/ImageEditingExample.js b/RNTester/js/ImageEditingExample.js
index 15bfda909c2ae8..af22c3034cbf17 100644
--- a/RNTester/js/ImageEditingExample.js
+++ b/RNTester/js/ImageEditingExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
  */
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   CameraRoll,
   Image,
   ImageEditor,
@@ -23,24 +23,24 @@ var {
   View,
 } = ReactNative;
 
-var PAGE_SIZE = 20;
+const PAGE_SIZE = 20;
 
-type ImageOffset = {
+type ImageOffset = {|
   x: number,
   y: number,
-};
+|};
 
-type ImageSize = {
+type ImageSize = {|
   width: number,
   height: number,
-};
+|};
 
-type ImageCropData = {
+type ImageCropData = {|
   offset: ImageOffset,
   size: ImageSize,
   displaySize?: ?ImageSize,
   resizeMode?: ?any,
-};
+|};
 
 class SquareImageCropper extends React.Component<
   $FlowFixMeProps,
@@ -50,6 +50,9 @@ class SquareImageCropper extends React.Component<
   _isMounted: boolean;
   _transformData: ImageCropData;
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   constructor(props) {
     super(props);
     this._isMounted = true;
@@ -68,9 +71,9 @@ class SquareImageCropper extends React.Component<
       if (!this._isMounted) {
         return;
       }
-      var edges = data.edges;
-      var edge = edges[Math.floor(Math.random() * edges.length)];
-      var randomPhoto = edge && edge.node && edge.node.image;
+      const edges = data.edges;
+      const edge = edges[Math.floor(Math.random() * edges.length)];
+      const randomPhoto = edge && edge.node && edge.node.image;
       if (randomPhoto) {
         this.setState({randomPhoto});
       }
@@ -89,7 +92,7 @@ class SquareImageCropper extends React.Component<
         <View
           style={styles.container}
           onLayout={event => {
-            var measuredWidth = event.nativeEvent.layout.width;
+            const measuredWidth = event.nativeEvent.layout.width;
             if (!measuredWidth) {
               return;
             }
@@ -111,7 +114,7 @@ class SquareImageCropper extends React.Component<
     if (!this.state.randomPhoto) {
       return <View style={styles.container} />;
     }
-    var error = null;
+    let error = null;
     if (this.state.cropError) {
       error = <Text>{this.state.cropError.message}</Text>;
     }
@@ -184,8 +187,8 @@ class ImageCropper extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   componentWillMount() {
     // Scale an image to the minimum size that is large enough to completely
     // fill the crop box.
-    var widthRatio = this.props.image.width / this.props.size.width;
-    var heightRatio = this.props.image.height / this.props.size.height;
+    const widthRatio = this.props.image.width / this.props.size.width;
+    const heightRatio = this.props.image.height / this.props.size.height;
     this._horizontal = widthRatio > heightRatio;
     if (this._horizontal) {
       this._scaledImageSize = {
@@ -234,12 +237,12 @@ class ImageCropper extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   }
 
   _updateTransformData(offset, scaledImageSize, croppedImageSize) {
-    var offsetRatioX = offset.x / scaledImageSize.width;
-    var offsetRatioY = offset.y / scaledImageSize.height;
-    var sizeRatioX = croppedImageSize.width / scaledImageSize.width;
-    var sizeRatioY = croppedImageSize.height / scaledImageSize.height;
+    const offsetRatioX = offset.x / scaledImageSize.width;
+    const offsetRatioY = offset.y / scaledImageSize.height;
+    const sizeRatioX = croppedImageSize.width / scaledImageSize.width;
+    const sizeRatioY = croppedImageSize.height / scaledImageSize.height;
 
-    var cropData: ImageCropData = {
+    const cropData: ImageCropData = {
       offset: {
         x: this.props.image.width * offsetRatioX,
         y: this.props.image.height * offsetRatioY,
@@ -287,7 +290,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     alignSelf: 'stretch',
diff --git a/RNTester/js/ImageExample.js b/RNTester/js/ImageExample.js
index 507d77b780988b..6be9659d3541d1 100644
--- a/RNTester/js/ImageExample.js
+++ b/RNTester/js/ImageExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,47 +10,62 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   ActivityIndicator,
   Image,
-  Platform,
   StyleSheet,
   Text,
   View,
   ImageBackground,
 } = ReactNative;
 
-var base64Icon =
+const base64Icon =
   'data:image/png;base64,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';
 
-var ImageCapInsetsExample = require('./ImageCapInsetsExample');
+const ImageCapInsetsExample = require('./ImageCapInsetsExample');
 const IMAGE_PREFETCH_URL =
   'http://origami.design/public/images/bird-logo.png?r=1&t=' + Date.now();
-var prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
+const prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
 
-/* $FlowFixMe(>=0.63.0 site=react_native_fb) This comment suppresses an error
- * found when Flow v0.63 was deployed. To see the error delete this comment and
- * run Flow. */
-var NetworkImageCallbackExample = createReactClass({
-  displayName: 'NetworkImageCallbackExample',
-  getInitialState: function() {
-    return {
-      events: [],
-      startLoadPrefetched: false,
-      mountTime: new Date(),
-    };
-  },
+type ImageSource = $ReadOnly<{|
+  uri: string,
+|}>;
+
+type NetworkImageCallbackExampleState = {|
+  events: Array<string>,
+  startLoadPrefetched: boolean,
+  mountTime: Date,
+|};
+
+type NetworkImageCallbackExampleProps = $ReadOnly<{|
+  source: ImageSource,
+  prefetchedSource: ImageSource,
+|}>;
+
+class NetworkImageCallbackExample extends React.Component<
+  NetworkImageCallbackExampleProps,
+  NetworkImageCallbackExampleState,
+> {
+  state = {
+    events: [],
+    startLoadPrefetched: false,
+    mountTime: new Date(),
+  };
 
   UNSAFE_componentWillMount() {
     this.setState({mountTime: new Date()});
-  },
+  }
 
-  render: function() {
-    var {mountTime} = this.state;
+  _loadEventFired = (event: string) => {
+    this.setState(state => ({
+      events: [...state.events, event],
+    }));
+  };
 
+  render() {
+    const {mountTime} = this.state;
     return (
       <View>
         <Image
@@ -77,6 +92,19 @@ var NetworkImageCallbackExample = createReactClass({
                   this._loadEventFired(
                     `✔ Prefetch OK (+${new Date() - mountTime}ms)`,
                   );
+                  Image.queryCache([IMAGE_PREFETCH_URL]).then(map => {
+                    const result = map.get(IMAGE_PREFETCH_URL);
+                    if (result) {
+                      this._loadEventFired(
+                        `✔ queryCache "${result}" (+${new Date() -
+                          mountTime}ms)`,
+                      );
+                    } else {
+                      this._loadEventFired(
+                        `✘ queryCache (+${new Date() - mountTime}ms)`,
+                      );
+                    }
+                  });
                 },
                 error => {
                   this._loadEventFired(
@@ -120,25 +148,31 @@ var NetworkImageCallbackExample = createReactClass({
         <Text style={{marginTop: 20}}>{this.state.events.join('\n')}</Text>
       </View>
     );
-  },
+  }
+}
 
-  _loadEventFired(event) {
-    this.setState(state => {
-      return (state.events = [...state.events, event]);
-    });
-  },
-});
+type NetworkImageExampleState = {|
+  error: boolean,
+  loading: boolean,
+  progress: number,
+|};
 
-var NetworkImageExample = createReactClass({
-  getInitialState: function() {
-    return {
-      error: false,
-      loading: false,
-      progress: 0,
-    };
-  },
-  render: function() {
-    var loader = this.state.loading ? (
+type NetworkImageExampleProps = $ReadOnly<{|
+  source: ImageSource,
+|}>;
+
+class NetworkImageExample extends React.Component<
+  NetworkImageExampleProps,
+  NetworkImageExampleState,
+> {
+  state = {
+    error: false,
+    loading: false,
+    progress: 0,
+  };
+
+  render() {
+    const loader = this.state.loading ? (
       <View style={styles.progress}>
         <Text>{this.state.progress}%</Text>
         <ActivityIndicator style={{marginLeft: 5}} />
@@ -165,22 +199,34 @@ var NetworkImageExample = createReactClass({
         {loader}
       </ImageBackground>
     );
-  },
-});
+  }
+}
 
-var ImageSizeExample = createReactClass({
-  getInitialState: function() {
-    return {
-      width: 0,
-      height: 0,
-    };
-  },
-  componentDidMount: function() {
+type ImageSizeExampleState = {|
+  width: number,
+  height: number,
+|};
+
+type ImageSizeExampleProps = $ReadOnly<{|
+  source: ImageSource,
+|}>;
+
+class ImageSizeExample extends React.Component<
+  ImageSizeExampleProps,
+  ImageSizeExampleState,
+> {
+  state = {
+    width: 0,
+    height: 0,
+  };
+
+  componentDidMount() {
     Image.getSize(this.props.source.uri, (width, height) => {
       this.setState({width, height});
     });
-  },
-  render: function() {
+  }
+
+  render() {
     return (
       <View style={{flexDirection: 'row'}}>
         <Image
@@ -198,17 +244,56 @@ var ImageSizeExample = createReactClass({
         </Text>
       </View>
     );
-  },
-});
+  }
+}
 
-var MultipleSourcesExample = createReactClass({
-  getInitialState: function() {
-    return {
-      width: 30,
-      height: 30,
-    };
-  },
-  render: function() {
+type MultipleSourcesExampleState = {|
+  width: number,
+  height: number,
+|};
+
+type MultipleSourcesExampleProps = $ReadOnly<{||}>;
+
+class MultipleSourcesExample extends React.Component<
+  MultipleSourcesExampleProps,
+  MultipleSourcesExampleState,
+> {
+  state = {
+    width: 30,
+    height: 30,
+  };
+
+  increaseImageSize = () => {
+    if (this.state.width >= 100) {
+      return;
+    }
+    this.setState({
+      width: this.state.width + 10,
+      height: this.state.height + 10,
+    });
+  };
+
+  increaseImageSize = () => {
+    if (this.state.width >= 100) {
+      return;
+    }
+    this.setState({
+      width: this.state.width + 10,
+      height: this.state.height + 10,
+    });
+  };
+
+  decreaseImageSize = () => {
+    if (this.state.width <= 10) {
+      return;
+    }
+    this.setState({
+      width: this.state.width - 10,
+      height: this.state.height - 10,
+    });
+  };
+
+  render() {
     return (
       <View>
         <View style={{flexDirection: 'row', justifyContent: 'space-between'}}>
@@ -247,26 +332,8 @@ var MultipleSourcesExample = createReactClass({
         </View>
       </View>
     );
-  },
-  increaseImageSize: function() {
-    if (this.state.width >= 100) {
-      return;
-    }
-    this.setState({
-      width: this.state.width + 10,
-      height: this.state.height + 10,
-    });
-  },
-  decreaseImageSize: function() {
-    if (this.state.width <= 10) {
-      return;
-    }
-    this.setState({
-      width: this.state.width - 10,
-      height: this.state.height - 10,
-    });
-  },
-});
+  }
+}
 
 exports.displayName = (undefined: ?string);
 exports.framework = 'React';
@@ -854,14 +921,14 @@ exports.examples = [
   },
 ];
 
-var fullImage = {
+const fullImage = {
   uri: 'https://facebook.github.io/react-native/img/opengraph.png',
 };
-var smallImage = {
+const smallImage = {
   uri: 'https://facebook.github.io/react-native/img/favicon.png',
 };
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   base: {
     width: 38,
     height: 38,
diff --git a/RNTester/js/InputAccessoryViewExample.js b/RNTester/js/InputAccessoryViewExample.js
index a848b961436e4e..70f9b572945144 100644
--- a/RNTester/js/InputAccessoryViewExample.js
+++ b/RNTester/js/InputAccessoryViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -58,6 +58,8 @@ class TextInputBar extends React.PureComponent<*, *> {
   }
 }
 
+const BAR_HEIGHT = 44;
+
 class InputAccessoryViewExample extends React.Component<*> {
   static title = '<InputAccessoryView>';
   static description =
@@ -65,8 +67,8 @@ class InputAccessoryViewExample extends React.Component<*> {
 
   render() {
     return (
-      <View>
-        <ScrollView keyboardDismissMode="interactive">
+      <>
+        <ScrollView style={styles.fill} keyboardDismissMode="interactive">
           {Array(15)
             .fill()
             .map((_, i) => <Message key={i} />)}
@@ -74,14 +76,21 @@ class InputAccessoryViewExample extends React.Component<*> {
         <InputAccessoryView backgroundColor="#fffffff7">
           <TextInputBar />
         </InputAccessoryView>
-      </View>
+      </>
     );
   }
 }
 
 const styles = StyleSheet.create({
+  fill: {
+    flex: 1,
+  },
   textInputContainer: {
     flexDirection: 'row',
+    alignItems: 'center',
+    borderTopWidth: 1,
+    borderTopColor: '#eee',
+    height: BAR_HEIGHT,
   },
   textInput: {
     flex: 1,
diff --git a/RNTester/js/KeyboardAvoidingViewExample.js b/RNTester/js/KeyboardAvoidingViewExample.js
index 0e86e432d79f58..5a959c8618e3cf 100644
--- a/RNTester/js/KeyboardAvoidingViewExample.js
+++ b/RNTester/js/KeyboardAvoidingViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/LayoutAnimationExample.js b/RNTester/js/LayoutAnimationExample.js
index 47f5889834bd4c..184c3d5b29cfaa 100644
--- a/RNTester/js/LayoutAnimationExample.js
+++ b/RNTester/js/LayoutAnimationExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -156,9 +156,6 @@ const styles = StyleSheet.create({
     padding: 10,
     marginBottom: 10,
   },
-  buttonText: {
-    fontSize: 16,
-  },
   viewContainer: {
     flex: 1,
     flexDirection: 'row',
diff --git a/RNTester/js/LayoutEventsExample.js b/RNTester/js/LayoutEventsExample.js
index 4f0b3f24248df9..8e086fc0f707d9 100644
--- a/RNTester/js/LayoutEventsExample.js
+++ b/RNTester/js/LayoutEventsExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,20 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var Platform = require('Platform');
-var {Image, LayoutAnimation, StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const Platform = require('Platform');
+const {Image, LayoutAnimation, StyleSheet, Text, View} = ReactNative;
 
 import type {ViewLayout, ViewLayoutEvent} from 'ViewPropTypes';
 
 type State = {
-  containerStyle?: {width: number},
+  containerStyle?: {|width: number|},
   extraText?: string,
   imageLayout?: ViewLayout,
   textLayout?: ViewLayout,
   viewLayout?: ViewLayout,
-  viewStyle: {margin: number},
+  viewStyle: {|margin: number|},
 };
 
 class LayoutEventExample extends React.Component<{}, State> {
@@ -77,9 +77,9 @@ class LayoutEventExample extends React.Component<{}, State> {
   };
 
   render() {
-    var viewStyle = [styles.view, this.state.viewStyle];
-    var textLayout = this.state.textLayout || {width: '?', height: '?'};
-    var imageLayout = this.state.imageLayout || {x: '?', y: '?'};
+    const viewStyle = [styles.view, this.state.viewStyle];
+    const textLayout = this.state.textLayout || {width: '?', height: '?'};
+    const imageLayout = this.state.imageLayout || {x: '?', y: '?'};
     return (
       <View style={this.state.containerStyle}>
         <Text>
@@ -119,7 +119,7 @@ class LayoutEventExample extends React.Component<{}, State> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   view: {
     padding: 12,
     borderColor: 'black',
diff --git a/RNTester/js/LayoutExample.js b/RNTester/js/LayoutExample.js
index 89be190775ac99..fed6f705783acd 100644
--- a/RNTester/js/LayoutExample.js
+++ b/RNTester/js/LayoutExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,17 +10,17 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, View} = ReactNative;
 
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
 
 class Circle extends React.Component<$FlowFixMeProps> {
   render() {
-    var size = this.props.size || 20;
-    var backgroundColor = this.props.bgColor || '#527fe4';
+    const size = this.props.size || 20;
+    const backgroundColor = this.props.bgColor || '#527fe4';
     return (
       <View
         style={{
@@ -37,7 +37,7 @@ class Circle extends React.Component<$FlowFixMeProps> {
 
 class CircleBlock extends React.Component<$FlowFixMeProps> {
   render() {
-    var circleStyle = {
+    const circleStyle = {
       flexDirection: 'row',
       backgroundColor: '#f6f7f8',
       borderWidth: 0.5,
@@ -56,7 +56,7 @@ class LayoutExample extends React.Component<$FlowFixMeProps> {
   static displayName = 'LayoutExample';
 
   render() {
-    var fiveColoredCircles = [
+    const fiveColoredCircles = [
       <Circle bgColor="#527fe4" key="blue" />,
       <Circle bgColor="#D443E3" key="violet" />,
       <Circle bgColor="#FF9049" key="orange" />,
@@ -186,7 +186,7 @@ class LayoutExample extends React.Component<$FlowFixMeProps> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   overlay: {
     backgroundColor: '#aaccff',
     borderRadius: 10,
diff --git a/RNTester/js/LinkingExample.js b/RNTester/js/LinkingExample.js
index 53b2e6c63efe08..d844b9602ef88a 100644
--- a/RNTester/js/LinkingExample.js
+++ b/RNTester/js/LinkingExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,18 +9,24 @@
 
 'use strict';
 
-var React = require('react');
-var PropTypes = require('prop-types');
-var ReactNative = require('react-native');
-var Platform = require('Platform');
-var {Linking, StyleSheet, Text, TouchableOpacity, View} = ReactNative;
-var RNTesterBlock = require('./RNTesterBlock');
+const React = require('react');
+const Platform = require('Platform');
 
-class OpenURLButton extends React.Component {
-  static propTypes = {
-    url: PropTypes.string,
-  };
+const {
+  Linking,
+  StyleSheet,
+  Text,
+  TouchableOpacity,
+  View,
+} = require('react-native');
+
+const RNTesterBlock = require('./RNTesterBlock');
+
+type Props = $ReadOnly<{|
+  url?: ?string,
+|}>;
 
+class OpenURLButton extends React.Component<Props> {
   handleClick = () => {
     Linking.canOpenURL(this.props.url).then(supported => {
       if (supported) {
@@ -72,13 +78,7 @@ class IntentAndroidExample extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    backgroundColor: 'white',
-    padding: 10,
-    paddingTop: 30,
-  },
+const styles = StyleSheet.create({
   button: {
     padding: 10,
     backgroundColor: '#3B5998',
diff --git a/RNTester/js/ListExampleShared.js b/RNTester/js/ListExampleShared.js
index 31c6e933b0fc4d..0ef5dda72dccc3 100644
--- a/RNTester/js/ListExampleShared.js
+++ b/RNTester/js/ListExampleShared.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/ListViewExample.js b/RNTester/js/ListViewExample.js
index ffc73b78726106..eb2c572be2844c 100644
--- a/RNTester/js/ListViewExample.js
+++ b/RNTester/js/ListViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,34 +10,45 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {Image, ListView, TouchableHighlight, StyleSheet, Text, View} = ReactNative;
-
-var RNTesterPage = require('./RNTesterPage');
-
-var ListViewSimpleExample = createReactClass({
-  displayName: 'ListViewSimpleExample',
-  statics: {
-    title: '<ListView>',
-    description: 'Performant, scrollable list of data.',
-  },
-
-  getInitialState: function() {
-    var ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
-    return {
-      dataSource: ds.cloneWithRows(this._genRows({})),
-    };
-  },
-
-  _pressData: ({}: {[key: number]: boolean}),
+const React = require('react');
+const ReactNative = require('react-native');
+const {
+  Image,
+  ListView,
+  TouchableHighlight,
+  StyleSheet,
+  Text,
+  View,
+} = ReactNative;
+const ListViewDataSource = require('ListViewDataSource');
+const RNTesterPage = require('./RNTesterPage');
+
+import type {RNTesterProps} from 'RNTesterTypes';
+
+type State = {|
+  dataSource: ListViewDataSource,
+|};
+
+class ListViewSimpleExample extends React.Component<RNTesterProps, State> {
+  static title = '<ListView>';
+  static description = 'Performant, scrollable list of data.';
+
+  state = {
+    dataSource: this.getInitialDataSource(),
+  };
+
+  _pressData: {[key: number]: boolean} = {};
+
+  getInitialDataSource() {
+    const ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
+    return ds.cloneWithRows(this._genRows({}));
+  }
 
-  UNSAFE_componentWillMount: function() {
+  UNSAFE_componentWillMount() {
     this._pressData = {};
-  },
+  }
 
-  render: function() {
+  render() {
     return (
       <RNTesterPage
         title={this.props.navigator ? null : '<ListView>'}
@@ -50,16 +61,16 @@ var ListViewSimpleExample = createReactClass({
         />
       </RNTesterPage>
     );
-  },
+  }
 
-  _renderRow: function(
+  _renderRow = (
     rowData: string,
     sectionID: number,
     rowID: number,
     highlightRow: (sectionID: number, rowID: number) => void,
-  ) {
-    var rowHash = Math.abs(hashCode(rowData));
-    var imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
+  ) => {
+    const rowHash = Math.abs(hashCode(rowData));
+    const imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
     return (
       <TouchableHighlight
         onPress={() => {
@@ -76,27 +87,27 @@ var ListViewSimpleExample = createReactClass({
         </View>
       </TouchableHighlight>
     );
-  },
+  };
 
-  _genRows: function(pressData: {[key: number]: boolean}): Array<string> {
-    var dataBlob = [];
-    for (var ii = 0; ii < 100; ii++) {
-      var pressedText = pressData[ii] ? ' (pressed)' : '';
+  _genRows(pressData: {[key: number]: boolean}): Array<string> {
+    const dataBlob = [];
+    for (let ii = 0; ii < 100; ii++) {
+      const pressedText = pressData[ii] ? ' (pressed)' : '';
       dataBlob.push('Row ' + ii + pressedText);
     }
     return dataBlob;
-  },
+  }
 
-  _pressRow: function(rowID: number) {
+  _pressRow = (rowID: number) => {
     this._pressData[rowID] = !this._pressData[rowID];
     this.setState({
       dataSource: this.state.dataSource.cloneWithRows(
         this._genRows(this._pressData),
       ),
     });
-  },
+  };
 
-  _renderSeparator: function(
+  _renderSeparator(
     sectionID: number,
     rowID: number,
     adjacentRowHighlighted: boolean,
@@ -110,10 +121,10 @@ var ListViewSimpleExample = createReactClass({
         }}
       />
     );
-  },
-});
+  }
+}
 
-var THUMB_URLS = [
+const THUMB_URLS = [
   require('./Thumbnails/like.png'),
   require('./Thumbnails/dislike.png'),
   require('./Thumbnails/call.png'),
@@ -127,19 +138,19 @@ var THUMB_URLS = [
   require('./Thumbnails/superlike.png'),
   require('./Thumbnails/victory.png'),
 ];
-var LOREM_IPSUM =
+const LOREM_IPSUM =
   'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi adipiscing. Sea id integre luptatum. In tota sale consequuntur nec. Erat ocurreret mei ei. Eu paulo sapientem vulputate est, vel an accusam intellegam interesset. Nam eu stet pericula reprimique, ea vim illud modus, putant invidunt reprehendunt ne qui.';
 
 /* eslint no-bitwise: 0 */
-var hashCode = function(str) {
-  var hash = 15;
-  for (var ii = str.length - 1; ii >= 0; ii--) {
+const hashCode = function(str) {
+  let hash = 15;
+  for (let ii = str.length - 1; ii >= 0; ii--) {
     hash = (hash << 5) - hash + str.charCodeAt(ii);
   }
   return hash;
 };
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     flexDirection: 'row',
     justifyContent: 'center',
diff --git a/RNTester/js/ListViewGridLayoutExample.js b/RNTester/js/ListViewGridLayoutExample.js
index d4d0cc063ab9b1..2bc2cb2514389a 100644
--- a/RNTester/js/ListViewGridLayoutExample.js
+++ b/RNTester/js/ListViewGridLayoutExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,21 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {Image, ListView, TouchableHighlight, StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {
+  Image,
+  ListView,
+  TouchableHighlight,
+  StyleSheet,
+  Text,
+  View,
+} = ReactNative;
+const ListViewDataSource = require('ListViewDataSource');
 
-var THUMB_URLS = [
+import type {RNTesterProps} from 'RNTesterTypes';
+
+const THUMB_URLS = [
   require('./Thumbnails/like.png'),
   require('./Thumbnails/dislike.png'),
   require('./Thumbnails/call.png'),
@@ -30,28 +39,30 @@ var THUMB_URLS = [
   require('./Thumbnails/victory.png'),
 ];
 
-var ListViewGridLayoutExample = createReactClass({
-  displayName: 'ListViewGridLayoutExample',
+type State = {|
+  dataSource: ListViewDataSource,
+|};
 
-  statics: {
-    title: '<ListView> - Grid Layout',
-    description: 'Flexbox grid layout.',
-  },
+class ListViewGridLayoutExample extends React.Component<RNTesterProps, State> {
+  static title = '<ListView> - Grid Layout';
+  static description = 'Flexbox grid layout.';
 
-  getInitialState: function() {
-    var ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
-    return {
-      dataSource: ds.cloneWithRows(this._genRows({})),
-    };
-  },
+  state = {
+    dataSource: this.getInitialDataSource(),
+  };
 
-  _pressData: ({}: {[key: number]: boolean}),
+  getInitialDataSource() {
+    const ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
+    return ds.cloneWithRows(this._genRows({}));
+  }
 
-  UNSAFE_componentWillMount: function() {
+  _pressData: {[key: number]: boolean} = {};
+
+  UNSAFE_componentWillMount() {
     this._pressData = {};
-  },
+  }
 
-  render: function() {
+  render() {
     return (
       // ListView wraps ScrollView and so takes on its properties.
       // With that in mind you can use the ScrollView's contentContainerStyle prop to style the items.
@@ -64,11 +75,11 @@ var ListViewGridLayoutExample = createReactClass({
         renderRow={this._renderRow}
       />
     );
-  },
+  }
 
-  _renderRow: function(rowData: string, sectionID: number, rowID: number) {
-    var rowHash = Math.abs(hashCode(rowData));
-    var imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
+  _renderRow = (rowData: string, sectionID: number, rowID: number) => {
+    const rowHash = Math.abs(hashCode(rowData));
+    const imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
     return (
       <TouchableHighlight
         onPress={() => this._pressRow(rowID)}
@@ -81,37 +92,37 @@ var ListViewGridLayoutExample = createReactClass({
         </View>
       </TouchableHighlight>
     );
-  },
+  };
 
-  _genRows: function(pressData: {[key: number]: boolean}): Array<string> {
-    var dataBlob = [];
-    for (var ii = 0; ii < 100; ii++) {
-      var pressedText = pressData[ii] ? ' (X)' : '';
+  _genRows(pressData: {[key: number]: boolean}): Array<string> {
+    const dataBlob = [];
+    for (let ii = 0; ii < 100; ii++) {
+      const pressedText = pressData[ii] ? ' (X)' : '';
       dataBlob.push('Cell ' + ii + pressedText);
     }
     return dataBlob;
-  },
+  }
 
-  _pressRow: function(rowID: number) {
+  _pressRow = (rowID: number) => {
     this._pressData[rowID] = !this._pressData[rowID];
     this.setState({
       dataSource: this.state.dataSource.cloneWithRows(
         this._genRows(this._pressData),
       ),
     });
-  },
-});
+  };
+}
 
 /* eslint no-bitwise: 0 */
-var hashCode = function(str) {
-  var hash = 15;
-  for (var ii = str.length - 1; ii >= 0; ii--) {
+const hashCode = function(str) {
+  let hash = 15;
+  for (let ii = str.length - 1; ii >= 0; ii--) {
     hash = (hash << 5) - hash + str.charCodeAt(ii);
   }
   return hash;
 };
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   list: {
     justifyContent: 'space-around',
     flexDirection: 'row',
diff --git a/RNTester/js/ListViewPagingExample.js b/RNTester/js/ListViewPagingExample.js
index 5ff64ec6c136b6..8c81d62cb9ee14 100644
--- a/RNTester/js/ListViewPagingExample.js
+++ b/RNTester/js/ListViewPagingExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   Image,
   LayoutAnimation,
   ListView,
@@ -22,10 +22,10 @@ var {
   View,
 } = ReactNative;
 
-var NativeModules = require('NativeModules');
-var {UIManager} = NativeModules;
+const NativeModules = require('NativeModules');
+const {UIManager} = NativeModules;
 
-var THUMB_URLS = [
+const THUMB_URLS = [
   require('./Thumbnails/like.png'),
   require('./Thumbnails/dislike.png'),
   require('./Thumbnails/call.png'),
@@ -39,8 +39,8 @@ var THUMB_URLS = [
   require('./Thumbnails/superlike.png'),
   require('./Thumbnails/victory.png'),
 ];
-var NUM_SECTIONS = 100;
-var NUM_ROWS_PER_SECTION = 10;
+const NUM_SECTIONS = 100;
+const NUM_ROWS_PER_SECTION = 10;
 
 class Thumb extends React.Component<{}, $FlowFixMeState> {
   UNSAFE_componentWillMount() {
@@ -53,7 +53,7 @@ class Thumb extends React.Component<{}, $FlowFixMeState> {
   };
 
   _onPressThumb = () => {
-    var config =
+    const config =
       layoutAnimationConfigs[
         this.state.thumbIndex % layoutAnimationConfigs.length
       ];
@@ -94,31 +94,31 @@ class ListViewPagingExample extends React.Component<$FlowFixMeProps, *> {
   // $FlowFixMe found when converting React.createClass to ES6
   constructor(props) {
     super(props);
-    var getSectionData = (dataBlob, sectionID) => {
+    const getSectionData = (dataBlob, sectionID) => {
       return dataBlob[sectionID];
     };
-    var getRowData = (dataBlob, sectionID, rowID) => {
+    const getRowData = (dataBlob, sectionID, rowID) => {
       return dataBlob[rowID];
     };
 
-    var dataSource = new ListView.DataSource({
+    const dataSource = new ListView.DataSource({
       getRowData: getRowData,
       getSectionHeaderData: getSectionData,
       rowHasChanged: (row1, row2) => row1 !== row2,
       sectionHeaderHasChanged: (s1, s2) => s1 !== s2,
     });
 
-    var dataBlob = {};
-    var sectionIDs = [];
-    var rowIDs = [];
-    for (var ii = 0; ii < NUM_SECTIONS; ii++) {
-      var sectionName = 'Section ' + ii;
+    const dataBlob = {};
+    const sectionIDs = [];
+    const rowIDs = [];
+    for (let ii = 0; ii < NUM_SECTIONS; ii++) {
+      const sectionName = 'Section ' + ii;
       sectionIDs.push(sectionName);
       dataBlob[sectionName] = sectionName;
       rowIDs[ii] = [];
 
-      for (var jj = 0; jj < NUM_ROWS_PER_SECTION; jj++) {
-        var rowName = 'S' + ii + ', R' + jj;
+      for (let jj = 0; jj < NUM_ROWS_PER_SECTION; jj++) {
+        const rowName = 'S' + ii + ', R' + jj;
         rowIDs[ii].push(rowName);
         dataBlob[rowName] = rowName;
       }
@@ -151,7 +151,7 @@ class ListViewPagingExample extends React.Component<$FlowFixMeProps, *> {
   };
 
   renderHeader = () => {
-    var headerLikeText =
+    const headerLikeText =
       this.state.headerPressCount % 2 ? (
         <View>
           <Text style={styles.text}>1 Like</Text>
@@ -198,7 +198,7 @@ class ListViewPagingExample extends React.Component<$FlowFixMeProps, *> {
   }
 
   _onPressHeader = () => {
-    var config =
+    const config =
       layoutAnimationConfigs[
         Math.floor(this.state.headerPressCount / 2) %
           layoutAnimationConfigs.length
@@ -208,7 +208,7 @@ class ListViewPagingExample extends React.Component<$FlowFixMeProps, *> {
   };
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   listview: {
     backgroundColor: '#B0C4DE',
   },
@@ -223,13 +223,6 @@ var styles = StyleSheet.create({
     color: 'white',
     paddingHorizontal: 8,
   },
-  rowText: {
-    color: '#888888',
-  },
-  thumbText: {
-    fontSize: 20,
-    color: '#888888',
-  },
   buttonContents: {
     flexDirection: 'row',
     justifyContent: 'center',
@@ -256,7 +249,7 @@ var styles = StyleSheet.create({
   },
 });
 
-var animations = {
+const animations = {
   layout: {
     spring: {
       duration: 750,
@@ -284,7 +277,7 @@ var animations = {
   },
 };
 
-var layoutAnimationConfigs = [
+const layoutAnimationConfigs = [
   animations.layout.spring,
   animations.layout.easeInEaseOut,
 ];
diff --git a/RNTester/js/MaskedViewExample.js b/RNTester/js/MaskedViewExample.js
index 516eb206f3b8f0..8a2ebd71116a20 100644
--- a/RNTester/js/MaskedViewExample.js
+++ b/RNTester/js/MaskedViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/ModalExample.js b/RNTester/js/ModalExample.js
index ddacc829c3ebde..e8a306b17aba27 100644
--- a/RNTester/js/ModalExample.js
+++ b/RNTester/js/ModalExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   Modal,
   Picker,
   Platform,
@@ -44,7 +44,7 @@ class Button extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   };
 
   render() {
-    var colorStyle = {
+    const colorStyle = {
       color: this.state.active ? '#fff' : '#000',
     };
     return (
@@ -106,15 +106,15 @@ class ModalExample extends React.Component<{}, $FlowFixMeState> {
   }
 
   render() {
-    var modalBackgroundStyle = {
+    const modalBackgroundStyle = {
       backgroundColor: this.state.transparent
         ? 'rgba(0, 0, 0, 0.5)'
         : '#f5fcff',
     };
-    var innerContainerTransparentStyle = this.state.transparent
+    const innerContainerTransparentStyle = this.state.transparent
       ? {backgroundColor: '#fff', padding: 20}
       : null;
-    var activeButtonStyle = {
+    const activeButtonStyle = {
       backgroundColor: '#ddd',
     };
 
@@ -241,7 +241,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     justifyContent: 'center',
diff --git a/RNTester/js/MultiColumnExample.js b/RNTester/js/MultiColumnExample.js
index 468bc74406555d..28f7804c5efa04 100644
--- a/RNTester/js/MultiColumnExample.js
+++ b/RNTester/js/MultiColumnExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 
 const React = require('react');
 const ReactNative = require('react-native');
-const {FlatList, StyleSheet, Text, View} = ReactNative;
+const {FlatList, StyleSheet, Text, View, Alert} = ReactNative;
 
 const RNTesterPage = require('./RNTesterPage');
 
@@ -91,12 +91,13 @@ class MultiColumnExample extends React.PureComponent<
           data={filteredData}
           key={this.state.numColumns + (this.state.fixedHeight ? 'f' : 'v')}
           numColumns={this.state.numColumns || 1}
-          onRefresh={() => alert('onRefresh: nothing to refresh :P')}
+          onRefresh={() =>
+            Alert.alert('Alert', 'onRefresh: nothing to refresh :P')
+          }
           refreshing={false}
           renderItem={this._renderItemComponent}
           disableVirtualization={!this.state.virtualized}
           onViewableItemsChanged={this._onViewableItemsChanged}
-          legacyImplementation={false}
         />
       </RNTesterPage>
     );
diff --git a/RNTester/js/NativeAnimationsExample.js b/RNTester/js/NativeAnimationsExample.js
index 44d5416c4a3e7d..30f47ae22c2501 100644
--- a/RNTester/js/NativeAnimationsExample.js
+++ b/RNTester/js/NativeAnimationsExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,7 +21,7 @@ const {
   Slider,
 } = ReactNative;
 
-var AnimatedSlider = Animated.createAnimatedComponent(Slider);
+const AnimatedSlider = Animated.createAnimatedComponent(Slider);
 
 class Tester extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   state = {
@@ -293,6 +293,9 @@ class TrackingExample extends React.Component<
     this.state.toJS.setValue(nextValue);
   };
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   renderBlock = (anim, dest) => [
     <Animated.View
       key="line"
diff --git a/RNTester/js/NavigatorIOSBarStyleExample.js b/RNTester/js/NavigatorIOSBarStyleExample.js
deleted file mode 100644
index 07ca90edc05c1b..00000000000000
--- a/RNTester/js/NavigatorIOSBarStyleExample.js
+++ /dev/null
@@ -1,84 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * The examples provided by Facebook are for non-commercial testing and
- * evaluation purposes only.
- *
- * Facebook reserves all rights not expressly granted.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
- * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * @format
- */
-
-'use strict';
-
-var React = require('react');
-var ReactNative = require('react-native');
-var {NavigatorIOS, StatusBar, StyleSheet, Text, View} = ReactNative;
-
-class EmptyPage extends React.Component<{
-  text: string,
-}> {
-  render() {
-    return (
-      <View style={styles.emptyPage}>
-        <Text style={styles.emptyPageText}>{this.props.text}</Text>
-      </View>
-    );
-  }
-}
-
-class NavigatorIOSColors extends React.Component<{}> {
-  static title = '<NavigatorIOS> - Custom Bar Style';
-  static description = 'iOS navigation with custom nav bar colors';
-
-  render() {
-    // Set StatusBar with light contents to get better contrast
-    StatusBar.setBarStyle('light-content');
-
-    return (
-      <NavigatorIOS
-        style={styles.container}
-        initialRoute={{
-          component: EmptyPage,
-          title: '<NavigatorIOS>',
-          rightButtonTitle: 'Done',
-          onRightButtonPress: () => {
-            StatusBar.setBarStyle('default');
-            this.props.onExampleExit();
-          },
-          passProps: {
-            text: 'The nav bar is black with barStyle prop.',
-          },
-        }}
-        barStyle="black"
-      />
-    );
-  }
-}
-
-var styles = StyleSheet.create({
-  container: {
-    flex: 1,
-  },
-  emptyPage: {
-    flex: 1,
-    paddingTop: 64,
-  },
-  emptyPageText: {
-    margin: 10,
-  },
-});
-
-NavigatorIOSColors.external = true;
-
-module.exports = NavigatorIOSColors;
diff --git a/RNTester/js/NavigatorIOSColorsExample.js b/RNTester/js/NavigatorIOSColorsExample.js
deleted file mode 100644
index d9a7cbb29e0cb4..00000000000000
--- a/RNTester/js/NavigatorIOSColorsExample.js
+++ /dev/null
@@ -1,75 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-'use strict';
-
-var React = require('react');
-var ReactNative = require('react-native');
-var {NavigatorIOS, StatusBar, StyleSheet, Text, View} = ReactNative;
-
-class EmptyPage extends React.Component {
-  render() {
-    return (
-      <View style={styles.emptyPage}>
-        <Text style={styles.emptyPageText}>{this.props.text}</Text>
-      </View>
-    );
-  }
-}
-
-class NavigatorIOSColors extends React.Component {
-  static title = '<NavigatorIOS> - Custom Colors';
-  static description = 'iOS navigation with custom nav bar colors';
-
-  render() {
-    // Set StatusBar with light contents to get better contrast
-    StatusBar.setBarStyle('light-content');
-
-    return (
-      <NavigatorIOS
-        style={styles.container}
-        initialRoute={{
-          component: EmptyPage,
-          title: '<NavigatorIOS>',
-          rightButtonTitle: 'Done',
-          onRightButtonPress: () => {
-            StatusBar.setBarStyle('default');
-            this.props.onExampleExit();
-          },
-          passProps: {
-            text:
-              'The nav bar has custom colors with tintColor, ' +
-              'barTintColor and titleTextColor props.',
-          },
-        }}
-        tintColor="#FFFFFF"
-        barTintColor="#183E63"
-        titleTextColor="#FFFFFF"
-        translucent={true}
-      />
-    );
-  }
-}
-
-var styles = StyleSheet.create({
-  container: {
-    flex: 1,
-  },
-  emptyPage: {
-    flex: 1,
-    paddingTop: 64,
-  },
-  emptyPageText: {
-    margin: 10,
-  },
-});
-
-NavigatorIOSColors.external = true;
-
-module.exports = NavigatorIOSColors;
diff --git a/RNTester/js/NavigatorIOSExample.js b/RNTester/js/NavigatorIOSExample.js
deleted file mode 100644
index 252bf0e9e96511..00000000000000
--- a/RNTester/js/NavigatorIOSExample.js
+++ /dev/null
@@ -1,303 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow
- */
-
-'use strict';
-
-const React = require('react');
-const ReactNative = require('react-native');
-const ViewExample = require('./ViewExample');
-
-const createExamplePage = require('./createExamplePage');
-const nativeImageSource = require('nativeImageSource');
-const {
-  AlertIOS,
-  NavigatorIOS,
-  ScrollView,
-  StyleSheet,
-  Text,
-  TouchableHighlight,
-  View,
-} = ReactNative;
-
-class EmptyPage extends React.Component<$FlowFixMeProps> {
-  render() {
-    return (
-      <View style={styles.emptyPage}>
-        <Text style={styles.emptyPageText}>{this.props.text}</Text>
-      </View>
-    );
-  }
-}
-
-class NavigatorIOSExamplePage extends React.Component<$FlowFixMeProps> {
-  render() {
-    var recurseTitle = 'Recurse Navigation';
-    if (!this.props.depth || this.props.depth === 1) {
-      recurseTitle += ' - more examples here';
-    }
-    return (
-      <ScrollView style={styles.list}>
-        <View style={styles.line} />
-        <View style={styles.group}>
-          {this._renderRow(recurseTitle, () => {
-            this.props.navigator.push({
-              title: NavigatorIOSExample.title,
-              component: NavigatorIOSExamplePage,
-              backButtonTitle: 'Custom Back',
-              passProps: {depth: this.props.depth ? this.props.depth + 1 : 1},
-            });
-          })}
-          {this._renderRow('Push View Example', () => {
-            this.props.navigator.push({
-              title: 'Very Long Custom View Example Title',
-              component: createExamplePage(null, ViewExample),
-            });
-          })}
-          {this._renderRow('Custom title image Example', () => {
-            this.props.navigator.push({
-              title: 'Custom title image Example',
-              titleImage: require('./relay.png'),
-              component: createExamplePage(null, ViewExample),
-            });
-          })}
-          {this._renderRow('Custom Right Button', () => {
-            this.props.navigator.push({
-              title: NavigatorIOSExample.title,
-              component: EmptyPage,
-              rightButtonTitle: 'Cancel',
-              onRightButtonPress: () => this.props.navigator.pop(),
-              passProps: {
-                text: 'This page has a right button in the nav bar',
-              },
-            });
-          })}
-          {this._renderRow('Custom Right System Button', () => {
-            this.props.navigator.push({
-              title: NavigatorIOSExample.title,
-              component: EmptyPage,
-              rightButtonSystemIcon: 'bookmarks',
-              onRightButtonPress: () => this.props.navigator.pop(),
-              passProps: {
-                text: 'This page has a right system button in the nav bar',
-              },
-            });
-          })}
-          {this._renderRow('Custom Left & Right Icons', () => {
-            this.props.navigator.push({
-              title: NavigatorIOSExample.title,
-              component: EmptyPage,
-              leftButtonTitle: 'Custom Left',
-              onLeftButtonPress: () => this.props.navigator.pop(),
-              rightButtonIcon: nativeImageSource({
-                ios: 'NavBarButtonPlus',
-                width: 17,
-                height: 17,
-              }),
-              onRightButtonPress: () => {
-                AlertIOS.alert(
-                  'Bar Button Action',
-                  'Recognized a tap on the bar button icon',
-                  [
-                    {
-                      text: 'OK',
-                      onPress: () => console.log('Tapped OK'),
-                    },
-                  ],
-                );
-              },
-              passProps: {
-                text:
-                  'This page has an icon for the right button in the nav bar',
-              },
-            });
-          })}
-          {this._renderRow('Custom Left & Right System Icons', () => {
-            this.props.navigator.push({
-              title: NavigatorIOSExample.title,
-              component: EmptyPage,
-              leftButtonSystemIcon: 'cancel',
-              onLeftButtonPress: () => this.props.navigator.pop(),
-              rightButtonSystemIcon: 'search',
-              onRightButtonPress: () => {
-                AlertIOS.alert(
-                  'Bar Button Action',
-                  'Recognized a tap on the bar button icon',
-                  [
-                    {
-                      text: 'OK',
-                      onPress: () => console.log('Tapped OK'),
-                    },
-                  ],
-                );
-              },
-              passProps: {
-                text:
-                  'This page has an icon for the right button in the nav bar',
-              },
-            });
-          })}
-          {this._renderRow('Pop', () => {
-            this.props.navigator.pop();
-          })}
-          {this._renderRow('Pop to top', () => {
-            this.props.navigator.popToTop();
-          })}
-          {this._renderReplace()}
-          {this._renderReplacePrevious()}
-          {this._renderReplacePreviousAndPop()}
-          {this._renderRow(
-            'Exit NavigatorIOS Example',
-            this.props.onExampleExit,
-          )}
-        </View>
-        <View style={styles.line} />
-      </ScrollView>
-    );
-  }
-
-  _renderReplace = () => {
-    if (!this.props.depth) {
-      // this is to avoid replacing the top of the stack
-      return null;
-    }
-    return this._renderRow('Replace here', () => {
-      var prevRoute = this.props.route;
-      this.props.navigator.replace({
-        title: 'New Navigation',
-        component: EmptyPage,
-        rightButtonTitle: 'Undo',
-        onRightButtonPress: () => this.props.navigator.replace(prevRoute),
-        passProps: {
-          text:
-            'The component is replaced, but there is currently no ' +
-            'way to change the right button or title of the current route',
-        },
-      });
-    });
-  };
-
-  _renderReplacePrevious = () => {
-    if (!this.props.depth || this.props.depth < 2) {
-      // this is to avoid replacing the top of the stack
-      return null;
-    }
-    return this._renderRow('Replace previous', () => {
-      this.props.navigator.replacePrevious({
-        title: 'Replaced',
-        component: EmptyPage,
-        passProps: {
-          text: 'This is a replaced "previous" page',
-        },
-        wrapperStyle: styles.customWrapperStyle,
-      });
-    });
-  };
-
-  _renderReplacePreviousAndPop = () => {
-    if (!this.props.depth || this.props.depth < 2) {
-      // this is to avoid replacing the top of the stack
-      return null;
-    }
-    return this._renderRow('Replace previous and pop', () => {
-      this.props.navigator.replacePreviousAndPop({
-        title: 'Replaced and Popped',
-        component: EmptyPage,
-        passProps: {
-          text: 'This is a replaced "previous" page',
-        },
-        wrapperStyle: styles.customWrapperStyle,
-      });
-    });
-  };
-
-  _renderRow = (title: string, onPress: Function) => {
-    return (
-      <View>
-        <TouchableHighlight onPress={onPress}>
-          <View style={styles.row}>
-            <Text style={styles.rowText}>{title}</Text>
-          </View>
-        </TouchableHighlight>
-        <View style={styles.separator} />
-      </View>
-    );
-  };
-}
-
-class NavigatorIOSExample extends React.Component<$FlowFixMeProps> {
-  static title = '<NavigatorIOS>';
-  static description = 'iOS navigation capabilities';
-  static external = true;
-
-  render() {
-    const {onExampleExit} = this.props;
-    return (
-      <NavigatorIOS
-        style={styles.container}
-        initialRoute={{
-          title: NavigatorIOSExample.title,
-          component: NavigatorIOSExamplePage,
-          passProps: {onExampleExit},
-        }}
-        tintColor="#008888"
-      />
-    );
-  }
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-  },
-  customWrapperStyle: {
-    backgroundColor: '#bbdddd',
-  },
-  emptyPage: {
-    flex: 1,
-    paddingTop: 64,
-  },
-  emptyPageText: {
-    margin: 10,
-  },
-  list: {
-    backgroundColor: '#eeeeee',
-    marginTop: 10,
-  },
-  group: {
-    backgroundColor: 'white',
-  },
-  groupSpace: {
-    height: 15,
-  },
-  line: {
-    backgroundColor: '#bbbbbb',
-    height: StyleSheet.hairlineWidth,
-  },
-  row: {
-    backgroundColor: 'white',
-    justifyContent: 'center',
-    paddingHorizontal: 15,
-    paddingVertical: 15,
-  },
-  separator: {
-    height: StyleSheet.hairlineWidth,
-    backgroundColor: '#bbbbbb',
-    marginLeft: 15,
-  },
-  rowNote: {
-    fontSize: 17,
-  },
-  rowText: {
-    fontSize: 17,
-    fontWeight: '500',
-  },
-});
-
-module.exports = NavigatorIOSExample;
diff --git a/RNTester/js/NetInfoExample.js b/RNTester/js/NetInfoExample.js
index c3b62afdfdbe81..ae8f0976dd74d0 100644
--- a/RNTester/js/NetInfoExample.js
+++ b/RNTester/js/NetInfoExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/OrientationChangeExample.js b/RNTester/js/OrientationChangeExample.js
index cb2bee02c33d60..933745f060c512 100644
--- a/RNTester/js/OrientationChangeExample.js
+++ b/RNTester/js/OrientationChangeExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/PanResponderExample.js b/RNTester/js/PanResponderExample.js
index 8e0d44a35f2d84..b484dc086bfb52 100644
--- a/RNTester/js/PanResponderExample.js
+++ b/RNTester/js/PanResponderExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,37 +10,78 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {PanResponder, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {PanResponder, StyleSheet, View} = ReactNative;
 
-var CIRCLE_SIZE = 80;
+import type {PanResponderInstance, GestureState} from 'PanResponder';
+import type {PressEvent} from 'CoreEventTypes';
 
-var PanResponderExample = createReactClass({
-  displayName: 'PanResponderExample',
+type CircleStyles = {
+  backgroundColor?: string,
+  left?: number,
+  top?: number,
+};
 
-  statics: {
-    title: 'PanResponder Sample',
-    description:
-      'Shows the use of PanResponder to provide basic gesture handling.',
-  },
+const CIRCLE_SIZE = 80;
+
+type Props = $ReadOnly<{||}>;
+
+class PanResponderExample extends React.Component<Props> {
+  static title = 'PanResponder Sample';
+  static description =
+    'Shows the Use of PanResponder to provide basic gesture handling';
+
+  _handleStartShouldSetPanResponder = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): boolean => {
+    // Should we become active when the user presses down on the circle?
+    return true;
+  };
+
+  _handleMoveShouldSetPanResponder = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ): boolean => {
+    // Should we become active when the user moves a touch over the circle?
+    return true;
+  };
+
+  _handlePanResponderGrant = (
+    event: PressEvent,
+    gestureState: GestureState,
+  ) => {
+    this._highlight();
+  };
+
+  _handlePanResponderMove = (event: PressEvent, gestureState: GestureState) => {
+    this._circleStyles.style.left = this._previousLeft + gestureState.dx;
+    this._circleStyles.style.top = this._previousTop + gestureState.dy;
+    this._updateNativeStyles();
+  };
 
-  _panResponder: {},
-  _previousLeft: 0,
-  _previousTop: 0,
-  _circleStyles: {},
-  circle: (null: ?{setNativeProps(props: Object): void}),
-
-  UNSAFE_componentWillMount: function() {
-    this._panResponder = PanResponder.create({
-      onStartShouldSetPanResponder: this._handleStartShouldSetPanResponder,
-      onMoveShouldSetPanResponder: this._handleMoveShouldSetPanResponder,
-      onPanResponderGrant: this._handlePanResponderGrant,
-      onPanResponderMove: this._handlePanResponderMove,
-      onPanResponderRelease: this._handlePanResponderEnd,
-      onPanResponderTerminate: this._handlePanResponderEnd,
-    });
+  _handlePanResponderEnd = (event: PressEvent, gestureState: GestureState) => {
+    this._unHighlight();
+    this._previousLeft += gestureState.dx;
+    this._previousTop += gestureState.dy;
+  };
+
+  _panResponder: PanResponderInstance = PanResponder.create({
+    onStartShouldSetPanResponder: this._handleStartShouldSetPanResponder,
+    onMoveShouldSetPanResponder: this._handleMoveShouldSetPanResponder,
+    onPanResponderGrant: this._handlePanResponderGrant,
+    onPanResponderMove: this._handlePanResponderMove,
+    onPanResponderRelease: this._handlePanResponderEnd,
+    onPanResponderTerminate: this._handlePanResponderEnd,
+  });
+
+  _previousLeft: number = 0;
+  _previousTop: number = 0;
+  _circleStyles: {|style: CircleStyles|} = {style: {}};
+  circle: ?React.ElementRef<typeof View> = null;
+
+  UNSAFE_componentWillMount() {
     this._previousLeft = 20;
     this._previousTop = 84;
     this._circleStyles = {
@@ -50,13 +91,27 @@ var PanResponderExample = createReactClass({
         backgroundColor: 'green',
       },
     };
-  },
+  }
 
-  componentDidMount: function() {
+  componentDidMount() {
     this._updateNativeStyles();
-  },
+  }
+
+  _highlight() {
+    this._circleStyles.style.backgroundColor = 'blue';
+    this._updateNativeStyles();
+  }
 
-  render: function() {
+  _unHighlight() {
+    this._circleStyles.style.backgroundColor = 'green';
+    this._updateNativeStyles();
+  }
+
+  _updateNativeStyles() {
+    this.circle && this.circle.setNativeProps(this._circleStyles);
+  }
+
+  render() {
     return (
       <View style={styles.container}>
         <View
@@ -68,54 +123,10 @@ var PanResponderExample = createReactClass({
         />
       </View>
     );
-  },
-
-  _highlight: function() {
-    this._circleStyles.style.backgroundColor = 'blue';
-    this._updateNativeStyles();
-  },
-
-  _unHighlight: function() {
-    this._circleStyles.style.backgroundColor = 'green';
-    this._updateNativeStyles();
-  },
-
-  _updateNativeStyles: function() {
-    this.circle && this.circle.setNativeProps(this._circleStyles);
-  },
-
-  _handleStartShouldSetPanResponder: function(
-    e: Object,
-    gestureState: Object,
-  ): boolean {
-    // Should we become active when the user presses down on the circle?
-    return true;
-  },
-
-  _handleMoveShouldSetPanResponder: function(
-    e: Object,
-    gestureState: Object,
-  ): boolean {
-    // Should we become active when the user moves a touch over the circle?
-    return true;
-  },
-
-  _handlePanResponderGrant: function(e: Object, gestureState: Object) {
-    this._highlight();
-  },
-  _handlePanResponderMove: function(e: Object, gestureState: Object) {
-    this._circleStyles.style.left = this._previousLeft + gestureState.dx;
-    this._circleStyles.style.top = this._previousTop + gestureState.dy;
-    this._updateNativeStyles();
-  },
-  _handlePanResponderEnd: function(e: Object, gestureState: Object) {
-    this._unHighlight();
-    this._previousLeft += gestureState.dx;
-    this._previousTop += gestureState.dy;
-  },
-});
+  }
+}
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   circle: {
     width: CIRCLE_SIZE,
     height: CIRCLE_SIZE,
diff --git a/RNTester/js/PermissionsExampleAndroid.android.js b/RNTester/js/PermissionsExampleAndroid.android.js
index 81a7ec5b1a6d23..b624514114c728 100644
--- a/RNTester/js/PermissionsExampleAndroid.android.js
+++ b/RNTester/js/PermissionsExampleAndroid.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -114,15 +114,11 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     backgroundColor: 'white',
   },
-  singleLine: {
-    fontSize: 16,
-    padding: 4,
-  },
   text: {
     margin: 10,
   },
diff --git a/RNTester/js/PickerExample.js b/RNTester/js/PickerExample.js
index c156c7f19c7fc6..210b4dd2fbf19d 100644
--- a/RNTester/js/PickerExample.js
+++ b/RNTester/js/PickerExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -38,6 +38,7 @@ class PickerExample extends React.Component<{}, $FlowFixMeState> {
       <RNTesterPage title="<Picker>">
         <RNTesterBlock title="Basic Picker">
           <Picker
+            testID="basic-picker"
             style={styles.picker}
             selectedValue={this.state.selected1}
             onValueChange={this.onValueChange.bind(this, 'selected1')}>
@@ -123,7 +124,7 @@ class PickerExample extends React.Component<{}, $FlowFixMeState> {
   };
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   picker: {
     width: 100,
   },
diff --git a/RNTester/js/PickerIOSExample.js b/RNTester/js/PickerIOSExample.js
index b7551fbf4e9bb8..06f07ac11ad038 100644
--- a/RNTester/js/PickerIOSExample.js
+++ b/RNTester/js/PickerIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,9 +15,9 @@ var ReactNative = require('react-native');
 var Platform = require('Platform');
 var {PickerIOS, Text, View} = ReactNative;
 
-var PickerItemIOS = PickerIOS.Item;
+const PickerItemIOS = PickerIOS.Item;
 
-var CAR_MAKES_AND_MODELS = {
+const CAR_MAKES_AND_MODELS = {
   amc: {
     name: 'AMC',
     models: ['AMX', 'Concord', 'Eagle', 'Gremlin', 'Matador', 'Pacer'],
@@ -106,8 +106,9 @@ class PickerExample extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var make = CAR_MAKES_AND_MODELS[this.state.carMake];
-    var selectionString = make.name + ' ' + make.models[this.state.modelIndex];
+    const make = CAR_MAKES_AND_MODELS[this.state.carMake];
+    const selectionString =
+      make.name + ' ' + make.models[this.state.modelIndex];
     return (
       <View>
         <Text>Please choose a make for your car:</Text>
diff --git a/RNTester/js/PointerEventsExample.js b/RNTester/js/PointerEventsExample.js
index b22fb8b3324a8d..4c9d8fa15c9394 100644
--- a/RNTester/js/PointerEventsExample.js
+++ b/RNTester/js/PointerEventsExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, View} = ReactNative;
 
 class ExampleBox extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   state = {
@@ -171,7 +171,7 @@ type ExampleClass = {
   description: string,
 };
 
-var exampleClasses: Array<ExampleClass> = [
+const exampleClasses: Array<ExampleClass> = [
   {
     Component: NoneExample,
     title: '`none`',
@@ -192,7 +192,7 @@ var exampleClasses: Array<ExampleClass> = [
   },
 ];
 
-var infoToExample = info => {
+const infoToExample = info => {
   return {
     title: info.title,
     description: info.description,
@@ -202,7 +202,7 @@ var infoToExample = info => {
   };
 };
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   text: {
     fontSize: 10,
     color: '#5577cc',
@@ -230,9 +230,6 @@ var styles = StyleSheet.create({
     borderColor: '#f0f0f0',
     backgroundColor: '#f9f9f9',
   },
-  bottomSpacer: {
-    marginBottom: 100,
-  },
 });
 
 exports.framework = 'React';
diff --git a/RNTester/js/ProgressBarAndroidExample.android.js b/RNTester/js/ProgressBarAndroidExample.android.js
index 17da936b26196e..9c45fc54c40127 100644
--- a/RNTester/js/ProgressBarAndroidExample.android.js
+++ b/RNTester/js/ProgressBarAndroidExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,35 +10,51 @@
 
 'use strict';
 
-var ProgressBar = require('ProgressBarAndroid');
-var React = require('React');
-var createReactClass = require('create-react-class');
-var RNTesterBlock = require('RNTesterBlock');
-var RNTesterPage = require('RNTesterPage');
+const ProgressBar = require('ProgressBarAndroid');
+const React = require('React');
+const RNTesterBlock = require('RNTesterBlock');
+const RNTesterPage = require('RNTesterPage');
 
-var TimerMixin = require('react-timer-mixin');
+import type {ProgressBarAndroidProps} from 'ProgressBarAndroid';
 
-var MovingBar = createReactClass({
-  displayName: 'MovingBar',
-  mixins: [TimerMixin],
+type MovingBarProps = $ReadOnly<{|
+  ...$Diff<
+    ProgressBarAndroidProps,
+    {
+      progress: ?number,
+    },
+  >,
+  indeterminate: false,
+|}>;
 
-  getInitialState: function() {
-    return {
-      progress: 0,
-    };
-  },
+type MovingBarState = {
+  progress: number,
+};
 
-  componentDidMount: function() {
-    this.setInterval(() => {
-      var progress = (this.state.progress + 0.02) % 1;
-      this.setState({progress: progress});
+class MovingBar extends React.Component<MovingBarProps, MovingBarState> {
+  _intervalID: ?IntervalID = null;
+
+  state = {
+    progress: 0,
+  };
+
+  componentDidMount() {
+    this._intervalID = setInterval(() => {
+      const progress = (this.state.progress + 0.02) % 1;
+      this.setState({progress});
     }, 50);
-  },
+  }
+
+  componentWillUnmount() {
+    if (this._intervalID != null) {
+      clearInterval(this._intervalID);
+    }
+  }
 
-  render: function() {
+  render() {
     return <ProgressBar progress={this.state.progress} {...this.props} />;
-  },
-});
+  }
+}
 
 class ProgressBarAndroidExample extends React.Component<{}> {
   static title = '<ProgressBarAndroid>';
diff --git a/RNTester/js/ProgressViewIOSExample.js b/RNTester/js/ProgressViewIOSExample.js
index f691d9d3f98e5f..b7d8547074496d 100644
--- a/RNTester/js/ProgressViewIOSExample.js
+++ b/RNTester/js/ProgressViewIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,39 +10,45 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {ProgressViewIOS, StyleSheet, View} = ReactNative;
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-var TimerMixin = require('react-timer-mixin');
+const React = require('react');
+const ReactNative = require('react-native');
+const {ProgressViewIOS, StyleSheet, View} = ReactNative;
 
-var ProgressViewExample = createReactClass({
-  displayName: 'ProgressViewExample',
-  mixins: [TimerMixin],
+type Props = {||};
+type State = {|
+  progress: number,
+|};
 
-  getInitialState() {
-    return {
-      progress: 0,
-    };
-  },
+class ProgressViewExample extends React.Component<Props, State> {
+  _rafId: ?AnimationFrameID = null;
+
+  state = {
+    progress: 0,
+  };
 
   componentDidMount() {
     this.updateProgress();
-  },
+  }
+
+  componentWillUnmount() {
+    if (this._rafId != null) {
+      cancelAnimationFrame(this._rafId);
+    }
+  }
 
-  updateProgress() {
-    var progress = this.state.progress + 0.01;
+  updateProgress = () => {
+    const progress = this.state.progress + 0.01;
     this.setState({progress});
-    this.requestAnimationFrame(() => this.updateProgress());
-  },
+    this._rafId = requestAnimationFrame(() => this.updateProgress());
+  };
 
-  getProgress(offset) {
-    var progress = this.state.progress + offset;
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
+  getProgress = offset => {
+    const progress = this.state.progress + offset;
     return Math.sin(progress % Math.PI) % 1;
-  },
+  };
 
   render() {
     return (
@@ -73,8 +79,8 @@ var ProgressViewExample = createReactClass({
         />
       </View>
     );
-  },
-});
+  }
+}
 
 exports.displayName = (undefined: ?string);
 exports.framework = 'React';
@@ -89,7 +95,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     marginTop: -20,
     backgroundColor: 'transparent',
diff --git a/RNTester/js/PushNotificationIOSExample.js b/RNTester/js/PushNotificationIOSExample.js
index f4e86ef5dddddb..a841f126e7de95 100644
--- a/RNTester/js/PushNotificationIOSExample.js
+++ b/RNTester/js/PushNotificationIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   AlertIOS,
   PushNotificationIOS,
   StyleSheet,
@@ -192,7 +192,7 @@ class NotificationPermissionExample extends React.Component<
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   button: {
     padding: 10,
     alignItems: 'center',
diff --git a/RNTester/js/RCTRootViewIOSExample.js b/RNTester/js/RCTRootViewIOSExample.js
index 0314507bc5b587..397dfe22e5fedb 100644
--- a/RNTester/js/RCTRootViewIOSExample.js
+++ b/RNTester/js/RCTRootViewIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterActions.js b/RNTester/js/RNTesterActions.js
index d121569ab36abc..2b23ab53b14c51 100644
--- a/RNTester/js/RNTesterActions.js
+++ b/RNTester/js/RNTesterActions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterApp.android.js b/RNTester/js/RNTesterApp.android.js
index 61f2260294a704..6a731611466e4c 100644
--- a/RNTester/js/RNTesterApp.android.js
+++ b/RNTester/js/RNTesterApp.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterApp.ios.js b/RNTester/js/RNTesterApp.ios.js
index e5697e7d8b3458..2dd892c14f26a1 100644
--- a/RNTester/js/RNTesterApp.ios.js
+++ b/RNTester/js/RNTesterApp.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -78,17 +78,8 @@ class RNTesterApp extends React.Component<Props, RNTesterNavigationState> {
         );
         const urlAction = URIActionMap(url);
         const launchAction = exampleAction || urlAction;
-        if (err || !storedString) {
-          const initialAction = launchAction || {type: 'InitialAction'};
-          this.setState(RNTesterNavigationReducer(undefined, initialAction));
-          return;
-        }
-        const storedState = JSON.parse(storedString);
-        if (launchAction) {
-          this.setState(RNTesterNavigationReducer(storedState, launchAction));
-          return;
-        }
-        this.setState(storedState);
+        const initialAction = launchAction || {type: 'InitialAction'};
+        this.setState(RNTesterNavigationReducer(undefined, initialAction));
       });
     });
 
@@ -139,9 +130,6 @@ class RNTesterApp extends React.Component<Props, RNTesterNavigationState> {
     return (
       <View style={styles.exampleContainer}>
         <Header title="RNTester" />
-        {/* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This
-          * comment suppresses an error when upgrading Flow's support for
-          * React. To see the error delete this comment and run Flow. */}
         <RNTesterExampleList
           onNavigate={this._handleAction}
           list={RNTesterList}
@@ -196,7 +184,10 @@ RNTesterList.ComponentExamples.concat(RNTesterList.APIExamples).forEach(
         render() {
           return (
             <SnapshotViewIOS>
-              <RNTesterExampleContainer module={ExampleModule} />
+              <RNTesterExampleContainer
+                module={ExampleModule}
+                displayFilter={false}
+              />
             </SnapshotViewIOS>
           );
         }
diff --git a/RNTester/js/RNTesterBlock.js b/RNTester/js/RNTesterBlock.js
index 591b26b68a672f..6999668e6ac78b 100644
--- a/RNTester/js/RNTesterBlock.js
+++ b/RNTester/js/RNTesterBlock.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,32 +10,26 @@
 
 'use strict';
 
-var React = require('react');
-var PropTypes = require('prop-types');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const {StyleSheet, Text, View} = require('react-native');
 
-class RNTesterBlock extends React.Component<
-  {
-    title?: string,
-    description?: string,
-  },
-  $FlowFixMeState,
-> {
-  static propTypes = {
-    title: PropTypes.string,
-    description: PropTypes.string,
-  };
+type Props = $ReadOnly<{|
+  children?: React.Node,
+  title?: ?string,
+  description?: ?string,
+|}>;
+
+type State = {|
+  description: ?string,
+|};
 
-  state = {description: (null: ?string)};
+class RNTesterBlock extends React.Component<Props, State> {
+  state = {description: null};
 
   render() {
-    var description;
-    if (this.props.description) {
-      description = (
-        <Text style={styles.descriptionText}>{this.props.description}</Text>
-      );
-    }
+    const description = this.props.description ? (
+      <Text style={styles.descriptionText}>{this.props.description}</Text>
+    ) : null;
 
     return (
       <View style={styles.container}>
@@ -43,18 +37,13 @@ class RNTesterBlock extends React.Component<
           <Text style={styles.titleText}>{this.props.title}</Text>
           {description}
         </View>
-        <View style={styles.children}>
-          {
-            // $FlowFixMe found when converting React.createClass to ES6
-            this.props.children
-          }
-        </View>
+        <View style={styles.children}>{this.props.children}</View>
       </View>
     );
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     borderRadius: 3,
     borderWidth: 0.5,
@@ -80,16 +69,6 @@ var styles = StyleSheet.create({
   descriptionText: {
     fontSize: 14,
   },
-  disclosure: {
-    position: 'absolute',
-    top: 0,
-    right: 0,
-    padding: 10,
-  },
-  disclosureIcon: {
-    width: 12,
-    height: 8,
-  },
   children: {
     margin: 10,
   },
diff --git a/RNTester/js/RNTesterButton.js b/RNTester/js/RNTesterButton.js
index 57ac204b2242bf..0cc77abe6ae8cb 100644
--- a/RNTester/js/RNTesterButton.js
+++ b/RNTester/js/RNTesterButton.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,34 +10,30 @@
 
 'use strict';
 
-var React = require('react');
-var PropTypes = require('prop-types');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, TouchableHighlight} = ReactNative;
+const React = require('react');
+const {StyleSheet, Text, TouchableHighlight} = require('react-native');
 
-class RNTesterButton extends React.Component<{onPress?: Function}> {
-  static propTypes = {
-    onPress: PropTypes.func,
-  };
+import type {PressEvent} from 'CoreEventTypes';
 
+type Props = $ReadOnly<{|
+  children?: React.Node,
+  onPress?: ?(event: PressEvent) => mixed,
+|}>;
+
+class RNTesterButton extends React.Component<Props> {
   render() {
     return (
       <TouchableHighlight
         onPress={this.props.onPress}
         style={styles.button}
         underlayColor="grey">
-        <Text>
-          {
-            // $FlowFixMe found when converting React.createClass to ES6
-            this.props.children
-          }
-        </Text>
+        <Text>{this.props.children}</Text>
       </TouchableHighlight>
     );
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   button: {
     borderColor: '#696969',
     borderRadius: 8,
diff --git a/RNTester/js/RNTesterExampleContainer.js b/RNTester/js/RNTesterExampleContainer.js
index d1254a0e48fcfa..c642a1706996af 100644
--- a/RNTester/js/RNTesterExampleContainer.js
+++ b/RNTester/js/RNTesterExampleContainer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,13 +12,14 @@
 const React = require('react');
 const {Platform} = require('react-native');
 const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterExampleFilter = require('./RNTesterExampleFilter');
 const RNTesterPage = require('./RNTesterPage');
 
 class RNTesterExampleContainer extends React.Component {
   renderExample(example, i) {
     // Filter platform-specific examples
-    var {title, description, platform} = example;
-    let platformSupported;
+    const {description, platform} = example;
+    let {title} = example;
     if (platform) {
       if (Array.isArray(platform)) {
         if (!platform.includes(Platform.OS)) {
@@ -46,9 +47,36 @@ class RNTesterExampleContainer extends React.Component {
       return <this.props.module />;
     }
 
+    if (
+      this.props.displayFilter === false ||
+      this.props.module.examples.length === 1
+    ) {
+      return (
+        <RNTesterPage title={this.props.title}>
+          {this.props.module.examples.map(this.renderExample)}
+        </RNTesterPage>
+      );
+    }
+
+    const filter = ({example, filterRegex}) => filterRegex.test(example.title);
+
+    const sections = [
+      {
+        data: this.props.module.examples,
+        title: 'EXAMPLES',
+        key: 'e',
+      },
+    ];
+
     return (
       <RNTesterPage title={this.props.title}>
-        {this.props.module.examples.map(this.renderExample)}
+        <RNTesterExampleFilter
+          sections={sections}
+          filter={filter}
+          render={({filteredSections}) =>
+            filteredSections[0].data.map(this.renderExample)
+          }
+        />
       </RNTesterPage>
     );
   }
diff --git a/RNTester/js/RNTesterExampleFilter.js b/RNTester/js/RNTesterExampleFilter.js
new file mode 100644
index 00000000000000..67af8b1f3ea713
--- /dev/null
+++ b/RNTester/js/RNTesterExampleFilter.js
@@ -0,0 +1,106 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const React = require('react');
+const StyleSheet = require('StyleSheet');
+const TextInput = require('TextInput');
+const View = require('View');
+
+type Props = {
+  filter: Function,
+  render: Function,
+  /*
+   * $FlowFixMe: We shoudl better type this (ideally so that render and filter are
+   * aware of what they receive)
+   */
+  sections: Object,
+  disableSearch?: boolean,
+};
+
+type State = {
+  filter: string,
+};
+
+class RNTesterExampleFilter extends React.Component<Props, State> {
+  state = {filter: ''};
+
+  render() {
+    const filterText = this.state.filter;
+    let filterRegex = /.*/;
+
+    try {
+      filterRegex = new RegExp(String(filterText), 'i');
+    } catch (error) {
+      console.warn(
+        'Failed to create RegExp: %s\n%s',
+        filterText,
+        error.message,
+      );
+    }
+
+    const filter = example =>
+      this.props.disableSearch || this.props.filter({example, filterRegex});
+
+    const filteredSections = this.props.sections.map(section => ({
+      ...section,
+      data: section.data.filter(filter),
+    }));
+
+    return (
+      <View>
+        {this._renderTextInput()}
+        {this.props.render({filteredSections})}
+      </View>
+    );
+  }
+
+  _renderTextInput(): ?React.Element<any> {
+    if (this.props.disableSearch) {
+      return null;
+    }
+    return (
+      <View style={styles.searchRow}>
+        <TextInput
+          autoCapitalize="none"
+          autoCorrect={false}
+          clearButtonMode="always"
+          onChangeText={text => {
+            this.setState(() => ({filter: text}));
+          }}
+          placeholder="Search..."
+          underlineColorAndroid="transparent"
+          style={styles.searchTextInput}
+          testID="explorer_search"
+          value={this.state.filter}
+        />
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  searchRow: {
+    backgroundColor: '#eeeeee',
+    padding: 10,
+  },
+  searchTextInput: {
+    backgroundColor: 'white',
+    borderColor: '#cccccc',
+    borderRadius: 3,
+    borderWidth: 1,
+    paddingLeft: 8,
+    paddingVertical: 0,
+    height: 35,
+  },
+});
+
+module.exports = RNTesterExampleFilter;
diff --git a/RNTester/js/RNTesterExampleList.js b/RNTester/js/RNTesterExampleList.js
index 80ec5aa45f8ead..4bc9dca6ce38c8 100644
--- a/RNTester/js/RNTesterExampleList.js
+++ b/RNTester/js/RNTesterExampleList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,17 +15,15 @@ const React = require('react');
 const SectionList = require('SectionList');
 const StyleSheet = require('StyleSheet');
 const Text = require('Text');
-const TextInput = require('TextInput');
 const TouchableHighlight = require('TouchableHighlight');
 const RNTesterActions = require('./RNTesterActions');
-const RNTesterStatePersister = require('./RNTesterStatePersister');
+const RNTesterExampleFilter = require('./RNTesterExampleFilter');
 const View = require('View');
 
 /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found when
  * making Flow check .android.js files. */
 import type {RNTesterExample} from './RNTesterList.ios';
-import type {PassProps} from './RNTesterStatePersister';
-import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
+import type {ViewStyleProp} from 'StyleSheet';
 
 type Props = {
   onNavigate: Function,
@@ -33,9 +31,7 @@ type Props = {
     ComponentExamples: Array<RNTesterExample>,
     APIExamples: Array<RNTesterExample>,
   },
-  persister: PassProps<*>,
-  searchTextInputStyle: DangerouslyImpreciseStyleProp,
-  style?: ?DangerouslyImpreciseStyleProp,
+  style?: ?ViewStyleProp,
 };
 
 class RowComponent extends React.PureComponent<{
@@ -80,55 +76,51 @@ const renderSectionHeader = ({section}) => (
 
 class RNTesterExampleList extends React.Component<Props, $FlowFixMeState> {
   render() {
-    const filterText = this.props.persister.state.filter;
-    const filterRegex = new RegExp(String(filterText), 'i');
-    const filter = example =>
+    const filter = ({example, filterRegex}) =>
       /* $FlowFixMe(>=0.68.0 site=react_native_fb) This comment suppresses an
-       * error found when Flow v0.68 was deployed. To see the error delete this
-       * comment and run Flow. */
-      this.props.disableSearch ||
-      (filterRegex.test(example.module.title) &&
-        (!Platform.isTV || example.supportsTVOS));
+      * error found when Flow v0.68 was deployed. To see the error delete this
+      * comment and run Flow. */
+      filterRegex.test(example.module.title) &&
+      (!Platform.isTV || example.supportsTVOS);
 
     const sections = [
       {
-        data: this.props.list.ComponentExamples.filter(filter),
+        data: this.props.list.ComponentExamples,
         title: 'COMPONENTS',
         key: 'c',
       },
       {
-        data: this.props.list.APIExamples.filter(filter),
+        data: this.props.list.APIExamples,
         title: 'APIS',
         key: 'a',
       },
     ];
+
     return (
       <View style={[styles.listContainer, this.props.style]}>
         {this._renderTitleRow()}
-        {this._renderTextInput()}
-        <SectionList
-          ItemSeparatorComponent={ItemSeparator}
-          contentContainerStyle={Platform.select({
-            macos: {backgroundColor: {semantic: 'separatorColor'}},
-            default: {backgroundColor: 'white'},
-          })} // TODO(macOS ISS#2323203)
-          style={styles.list}
+        <RNTesterExampleFilter
           sections={sections}
-          renderItem={this._renderItem}
-          enableEmptySections={true}
-          enableSelectionOnKeyPress={true}
-          onSelectionEntered={this._handleOnSelectionEntered}
-          itemShouldUpdate={this._itemShouldUpdate}
-          keyboardShouldPersistTaps="handled"
-          automaticallyAdjustContentInsets={false}
-          keyboardDismissMode="on-drag"
-          legacyImplementation={false}
-          renderSectionHeader={renderSectionHeader}
-          accessibilityLabel="RNTester Components"
-          backgroundColor={Platform.select({
-            macos: 'transparent',
-            default: undefined,
-          })} // TODO(macOS ISS#2323203)
+          filter={filter}
+          render={({filteredSections}) => (
+            <SectionList
+              ItemSeparatorComponent={ItemSeparator}
+              contentContainerStyle={styles.sectionListContentContainer}
+              style={styles.list}
+              sections={filteredSections}
+              renderItem={this._renderItem}
+              enableEmptySections={true}
+              itemShouldUpdate={this._itemShouldUpdate}
+              keyboardShouldPersistTaps="handled"
+              automaticallyAdjustContentInsets={false}
+              keyboardDismissMode="on-drag"
+              renderSectionHeader={renderSectionHeader}
+              backgroundColor={Platform.select({
+                macos: 'transparent',
+                default: undefined,
+              })} // TODO(macOS ISS#2323203)
+            />
+          )}
         />
       </View>
     );
@@ -176,36 +168,6 @@ class RNTesterExampleList extends React.Component<Props, $FlowFixMeState> {
     );
   }
 
-  _renderTextInput(): ?React.Element<any> {
-    /* $FlowFixMe(>=0.68.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.68 was deployed. To see the error delete this
-     * comment and run Flow. */
-    if (this.props.disableSearch) {
-      return null;
-    }
-    return (
-      <View style={styles.searchRow}>
-        <TextInput
-          autoCapitalize="none"
-          autoCorrect={false}
-          clearButtonMode="always"
-          onChangeText={text => {
-            this.props.persister.setState(() => ({filter: text}));
-          }}
-          placeholder="Search..."
-          placeholderTextColor={Platform.select({
-            macos: {semantic: 'placeholderTextColor'},
-            default: undefined,
-          })} // TODO(macOS ISS#2323203)
-          underlineColorAndroid="transparent"
-          style={[styles.searchTextInput, this.props.searchTextInputStyle]}
-          testID="explorer_search"
-          value={this.props.persister.state.filter}
-        />
-      </View>
-    );
-  }
-
   _handleRowPress(exampleKey: string): void {
     this.props.onNavigate(RNTesterActions.ExampleAction(exampleKey));
   }
@@ -215,14 +177,6 @@ const ItemSeparator = ({highlighted}) => (
   <View style={highlighted ? styles.separatorHighlighted : styles.separator} />
 );
 
-RNTesterExampleList = RNTesterStatePersister.createContainer(
-  RNTesterExampleList,
-  {
-    cacheKeySuffix: () => 'mainList',
-    getInitialState: () => ({filter: ''}),
-  },
-);
-
 const styles = StyleSheet.create({
   listContainer: {
     flex: 1,
@@ -297,6 +251,10 @@ const styles = StyleSheet.create({
     height: StyleSheet.hairlineWidth,
     backgroundColor: 'rgb(217, 217, 217)',
   },
+  sectionListContentContainer: Platform.select({
+    macos: {backgroundColor: {semantic: 'separatorColor'}},
+    default: {backgroundColor: 'white'},
+  }),
   rowTitleText: {
     fontSize: 17,
     fontWeight: '500',
@@ -316,41 +274,6 @@ const styles = StyleSheet.create({
     color: '#888888',
     lineHeight: 20,
   },
-  searchRow: {
-    ...Platform.select({
-      // [TODO(macOS ISS#2323203)
-      macos: {
-        backgroundColor: {
-          semantic: 'unemphasizedSelectedContentBackgroundColor',
-        },
-      },
-      default: {
-        // ]TODO(macOS ISS#2323203)
-        backgroundColor: '#eeeeee',
-      }, // [TODO(macOS ISS#2323203)
-    }), // ]TODO(macOS ISS#2323203)
-    padding: 10,
-  },
-  searchTextInput: {
-    ...Platform.select({
-      // [TODO(macOS ISS#2323203)
-      macos: {
-        color: {semantic: 'textColor'},
-        backgroundColor: {semantic: 'textBackgroundColor'},
-        borderColor: {semantic: 'gridColor'},
-      },
-      default: {
-        // ]TODO(macOS ISS#2323203)
-        backgroundColor: 'white',
-        borderColor: '#cccccc',
-      }, // [TODO(macOS ISS#2323203)
-    }), // ]TODO(macOS ISS#2323203)
-    borderRadius: 3,
-    borderWidth: 1,
-    paddingLeft: 8,
-    paddingVertical: 0,
-    height: 35,
-  },
 });
 
 module.exports = RNTesterExampleList;
diff --git a/RNTester/js/RNTesterList.android.js b/RNTester/js/RNTesterList.android.js
index 82906abc046a47..8657fc43061012 100644
--- a/RNTester/js/RNTesterList.android.js
+++ b/RNTester/js/RNTesterList.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterList.ios.js b/RNTester/js/RNTesterList.ios.js
index 5cb10138f86135..4c0eaff5d1e3d3 100644
--- a/RNTester/js/RNTesterList.ios.js
+++ b/RNTester/js/RNTesterList.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -98,21 +98,6 @@ const ComponentExamples: Array<RNTesterExample> = [
     module: require('./MultiColumnExample'),
     supportsTVOS: true,
   },
-  {
-    key: 'NavigatorIOSColorsExample',
-    module: require('./NavigatorIOSColorsExample'),
-    supportsTVOS: false,
-  },
-  {
-    key: 'NavigatorIOSBarStyleExample',
-    module: require('./NavigatorIOSBarStyleExample'),
-    supportsTVOS: false,
-  },
-  {
-    key: 'NavigatorIOSExample',
-    module: require('./NavigatorIOSExample'),
-    supportsTVOS: true,
-  },
   {
     key: 'PickerExample',
     module: require('./PickerExample'),
@@ -133,6 +118,11 @@ const ComponentExamples: Array<RNTesterExample> = [
     module: require('./RefreshControlExample'),
     supportsTVOS: false,
   },
+  {
+    key: 'ScrollViewSimpleExample',
+    module: require('./ScrollViewSimpleExample'),
+    supportsTVOS: true,
+  },
   {
     key: 'SafeAreaViewExample',
     module: require('./SafeAreaViewExample'),
diff --git a/RNTester/js/RNTesterNavigationReducer.js b/RNTester/js/RNTesterNavigationReducer.js
index 7dc222eee1797a..a7b68d6bc9b68d 100644
--- a/RNTester/js/RNTesterNavigationReducer.js
+++ b/RNTester/js/RNTesterNavigationReducer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterPage.js b/RNTester/js/RNTesterPage.js
index 580bd959800ddf..6b1b0fe1db6112 100644
--- a/RNTester/js/RNTesterPage.js
+++ b/RNTester/js/RNTesterPage.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,49 +10,39 @@
 
 'use strict';
 
-var PropTypes = require('prop-types');
-var React = require('react');
-var ReactNative = require('react-native');
-var {ScrollView, StyleSheet, View} = ReactNative;
+const React = require('react');
+const {ScrollView, StyleSheet, View} = require('react-native');
 
-var RNTesterTitle = require('./RNTesterTitle');
+const RNTesterTitle = require('./RNTesterTitle');
 
-class RNTesterPage extends React.Component<{
-  noScroll?: boolean,
-  noSpacer?: boolean,
-}> {
-  static propTypes = {
-    noScroll: PropTypes.bool,
-    noSpacer: PropTypes.bool,
-  };
+type Props = $ReadOnly<{|
+  children?: React.Node,
+  title?: ?string,
+  noScroll?: ?boolean,
+  noSpacer?: ?boolean,
+|}>;
 
+class RNTesterPage extends React.Component<Props> {
   render() {
-    var ContentWrapper;
-    var wrapperProps = {};
+    let ContentWrapper;
+    let wrapperProps = {};
     if (this.props.noScroll) {
       ContentWrapper = ((View: any): React.ComponentType<any>);
     } else {
       ContentWrapper = (ScrollView: React.ComponentType<any>);
-      // $FlowFixMe found when converting React.createClass to ES6
       wrapperProps.automaticallyAdjustContentInsets = !this.props.title;
       wrapperProps.keyboardShouldPersistTaps = 'handled';
       wrapperProps.keyboardDismissMode = 'interactive';
     }
-    /* $FlowFixMe(>=0.68.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.68 was deployed. To see the error delete this
-     * comment and run Flow. */
-    var title = this.props.title ? (
+    const title = this.props.title ? (
       <RNTesterTitle title={this.props.title} />
     ) : null;
-    var spacer = this.props.noSpacer ? null : <View style={styles.spacer} />;
+    const spacer = this.props.noSpacer ? null : <View style={styles.spacer} />;
     return (
       <View style={styles.container}>
         {title}
         <ContentWrapper style={styles.wrapper} {...wrapperProps}>
-          {
-            // $FlowFixMe found when converting React.createClass to ES6
-            this.props.children
-          }
+          {this.props.children}
           {spacer}
         </ContentWrapper>
       </View>
@@ -60,7 +50,7 @@ class RNTesterPage extends React.Component<{
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     backgroundColor: '#e9eaed',
     flex: 1,
diff --git a/RNTester/js/RNTesterSettingSwitchRow.js b/RNTester/js/RNTesterSettingSwitchRow.js
index d7b68f8bdf6724..383538b24706f4 100644
--- a/RNTester/js/RNTesterSettingSwitchRow.js
+++ b/RNTester/js/RNTesterSettingSwitchRow.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -49,6 +49,9 @@ const styles = StyleSheet.create({
     justifyContent: 'space-between',
   },
 });
+/* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+ * found when Flow v0.85 was deployed. To see the error, delete this comment
+ * and run Flow. */
 RNTesterSettingSwitchRow = RNTesterStatePersister.createContainer(
   RNTesterSettingSwitchRow,
   {
diff --git a/RNTester/js/RNTesterStatePersister.js b/RNTester/js/RNTesterStatePersister.js
index fb697e7d77ee1b..720e2616f414d1 100644
--- a/RNTester/js/RNTesterStatePersister.js
+++ b/RNTester/js/RNTesterStatePersister.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RNTesterTitle.js b/RNTester/js/RNTesterTitle.js
index ae163b83f40817..0c9b8b69615f95 100644
--- a/RNTester/js/RNTesterTitle.js
+++ b/RNTester/js/RNTesterTitle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, View} = ReactNative;
 
 class RNTesterTitle extends React.Component<$FlowFixMeProps> {
   render() {
@@ -24,7 +24,7 @@ class RNTesterTitle extends React.Component<$FlowFixMeProps> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     borderRadius: 4,
     borderWidth: 0.5,
diff --git a/RNTester/js/RTLExample.js b/RNTester/js/RTLExample.js
index d9792305c9fa2f..bc96323aa8febe 100644
--- a/RNTester/js/RTLExample.js
+++ b/RNTester/js/RTLExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RefreshControlExample.js b/RNTester/js/RefreshControlExample.js
index bb69fff63a8527..30f20cf03cae8c 100644
--- a/RNTester/js/RefreshControlExample.js
+++ b/RNTester/js/RefreshControlExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/RootViewSizeFlexibilityExampleApp.js b/RNTester/js/RootViewSizeFlexibilityExampleApp.js
index bfcce23e6b8ff0..42ec22a18dc4e4 100644
--- a/RNTester/js/RootViewSizeFlexibilityExampleApp.js
+++ b/RNTester/js/RootViewSizeFlexibilityExampleApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/SafeAreaViewExample.js b/RNTester/js/SafeAreaViewExample.js
index 6035481d7a68d4..37a3910a71620d 100644
--- a/RNTester/js/SafeAreaViewExample.js
+++ b/RNTester/js/SafeAreaViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,6 +15,7 @@ const Modal = require('Modal');
 const React = require('react');
 const SafeAreaView = require('SafeAreaView');
 const StyleSheet = require('StyleSheet');
+const Switch = require('Switch');
 const Text = require('Text');
 const View = require('View');
 
@@ -26,10 +27,14 @@ exports.description =
 
 class SafeAreaViewExample extends React.Component<
   {},
-  {|modalVisible: boolean|},
+  {|
+    modalVisible: boolean,
+    emulateUnlessSupported: boolean,
+  |},
 > {
   state = {
     modalVisible: false,
+    emulateUnlessSupported: true,
   };
 
   _setModalVisible = visible => {
@@ -45,12 +50,21 @@ class SafeAreaViewExample extends React.Component<
           animationType="slide"
           supportedOrientations={['portrait', 'landscape']}>
           <View style={styles.modal}>
-            <SafeAreaView style={styles.safeArea}>
+            <SafeAreaView
+              style={styles.safeArea}
+              emulateUnlessSupported={this.state.emulateUnlessSupported}>
               <View style={styles.safeAreaContent}>
                 <Button
                   onPress={this._setModalVisible.bind(this, false)}
                   title="Close"
                 />
+                <Text>emulateUnlessSupported:</Text>
+                <Switch
+                  onValueChange={value =>
+                    this.setState({emulateUnlessSupported: value})
+                  }
+                  value={this.state.emulateUnlessSupported}
+                />
               </View>
             </SafeAreaView>
           </View>
@@ -59,6 +73,13 @@ class SafeAreaViewExample extends React.Component<
           onPress={this._setModalVisible.bind(this, true)}
           title="Present Modal Screen with SafeAreaView"
         />
+        <Text>emulateUnlessSupported:</Text>
+        <Switch
+          onValueChange={value =>
+            this.setState({emulateUnlessSupported: value})
+          }
+          value={this.state.emulateUnlessSupported}
+        />
       </View>
     );
   }
@@ -97,7 +118,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   modal: {
     flex: 1,
   },
diff --git a/RNTester/js/ScrollViewExample.js b/RNTester/js/ScrollViewExample.js
index 0651ee301588b7..272c7bee2610ce 100644
--- a/RNTester/js/ScrollViewExample.js
+++ b/RNTester/js/ScrollViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,6 @@
  */
 'use strict';
 
-import type {DangerouslyImpreciseStyleProp} from 'StyleSheet';
-
-const ActivityIndicator = require('ActivityIndicator');
 const Platform = require('Platform');
 const React = require('react');
 const ReactNative = require('react-native');
@@ -24,6 +21,8 @@ const {
   Image,
 } = ReactNative;
 
+import type {ViewStyleProp} from 'StyleSheet';
+
 exports.displayName = 'ScrollViewExample';
 exports.title = '<ScrollView>';
 exports.description =
@@ -79,7 +78,7 @@ exports.examples = [
     render: function() {
       function renderScrollView(
         title: string,
-        additionalStyles: typeof StyleSheet,
+        additionalStyles: ViewStyleProp,
       ) {
         let _scrollView: ?ScrollView;
         return (
@@ -121,14 +120,8 @@ exports.examples = [
 
       return (
         <View>
-          {/* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment
-             * suppresses an error found when Flow v0.70 was deployed. To see
-             * the error delete this comment and run Flow. */
-          renderScrollView('LTR layout', {direction: 'ltr'})}
-          {/* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment
-             * suppresses an error found when Flow v0.70 was deployed. To see
-             * the error delete this comment and run Flow. */
-          renderScrollView('RTL layout', {direction: 'rtl'})}
+          {renderScrollView('LTR layout', {direction: 'ltr'})}
+          {renderScrollView('RTL layout', {direction: 'rtl'})}
         </View>
       );
     },
@@ -183,6 +176,9 @@ if (Platform.OS === 'ios') {
       let itemCount = 6;
       class AppendingList extends React.Component<{}, *> {
         state = {
+          /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses
+           * an error found when Flow v0.85 was deployed. To see the error,
+           * delete this comment and run Flow. */
           items: [...Array(itemCount)].map((_, ii) => (
             <Thumb msg={`Item ${ii}`} />
           )),
@@ -197,7 +193,6 @@ if (Platform.OS === 'ios') {
                   autoscrollToTopThreshold: 10,
                 }}
                 style={styles.scrollView}>
-                <ActivityIndicator style={{height: 40}} />
                 {this.state.items.map(item =>
                   React.cloneElement(item, {key: item.props.msg}),
                 )}
@@ -210,7 +205,6 @@ if (Platform.OS === 'ios') {
                   autoscrollToTopThreshold: 10,
                 }}
                 style={[styles.scrollView, styles.horizontalScrollView]}>
-                <ActivityIndicator style={{width: 40}} />
                 {this.state.items.map(item =>
                   React.cloneElement(item, {key: item.props.msg, style: null}),
                 )}
@@ -300,7 +294,7 @@ if (Platform.OS === 'ios') {
 class Thumb extends React.PureComponent<{|
   source?: string | number,
   msg?: string,
-  style?: DangerouslyImpreciseStyleProp,
+  style?: ViewStyleProp,
 |}> {
   render() {
     const {source} = this.props;
diff --git a/RNTester/js/ScrollViewSimpleExample.js b/RNTester/js/ScrollViewSimpleExample.js
index b7d95b2fb2f929..c72a47076892ff 100644
--- a/RNTester/js/ScrollViewSimpleExample.js
+++ b/RNTester/js/ScrollViewSimpleExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,23 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {ScrollView, StyleSheet, Text, TouchableOpacity} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {ScrollView, StyleSheet, Text, TouchableOpacity} = ReactNative;
 
-var NUM_ITEMS = 20;
+const NUM_ITEMS = 20;
 
 class ScrollViewSimpleExample extends React.Component<{}> {
   static title = '<ScrollView>';
   static description =
     'Component that enables scrolling through child components.';
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   makeItems = (nItems: number, styles): Array<any> => {
-    var items = [];
-    for (var i = 0; i < nItems; i++) {
+    const items = [];
+    for (let i = 0; i < nItems; i++) {
       items[i] = (
         <TouchableOpacity key={i} style={styles}>
           <Text>{'Item ' + i}</Text>
@@ -35,7 +38,7 @@ class ScrollViewSimpleExample extends React.Component<{}> {
 
   render() {
     // One of the items is a horizontal scroll view
-    var items = this.makeItems(NUM_ITEMS, styles.itemWrapper);
+    const items = this.makeItems(NUM_ITEMS, styles.itemWrapper);
     items[4] = (
       <ScrollView key={'scrollView'} horizontal={true}>
         {this.makeItems(NUM_ITEMS, [
@@ -58,7 +61,7 @@ class ScrollViewSimpleExample extends React.Component<{}> {
       </ScrollView>,
     );
 
-    var verticalScrollView = (
+    const verticalScrollView = (
       <ScrollView style={styles.verticalScrollView}>{items}</ScrollView>
     );
 
@@ -66,7 +69,7 @@ class ScrollViewSimpleExample extends React.Component<{}> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   verticalScrollView: {
     margin: 10,
   },
diff --git a/RNTester/js/SectionListExample.js b/RNTester/js/SectionListExample.js
index 1b0e67f0cdab17..0d72c60fab2fad 100644
--- a/RNTester/js/SectionListExample.js
+++ b/RNTester/js/SectionListExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/SegmentedControlIOSExample.js b/RNTester/js/SegmentedControlIOSExample.js
index 3295a62f6e48e7..21ef4b78334f40 100644
--- a/RNTester/js/SegmentedControlIOSExample.js
+++ b/RNTester/js/SegmentedControlIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {SegmentedControlIOS, Text, View, StyleSheet} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {SegmentedControlIOS, Text, View, StyleSheet} = ReactNative;
 
 class BasicSegmentedControlExample extends React.Component<{}> {
   render() {
@@ -132,7 +132,7 @@ class EventSegmentedControlExample extends React.Component<
   };
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   text: {
     fontSize: 14,
     textAlign: 'center',
diff --git a/RNTester/js/SetPropertiesExampleApp.js b/RNTester/js/SetPropertiesExampleApp.js
index 0773be00b80352..a7ea32204be7dd 100644
--- a/RNTester/js/SetPropertiesExampleApp.js
+++ b/RNTester/js/SetPropertiesExampleApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/ShareExample.js b/RNTester/js/ShareExample.js
index ac3aa22ee2f428..d1608a250715c4 100644
--- a/RNTester/js/ShareExample.js
+++ b/RNTester/js/ShareExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, View, Text, TouchableHighlight, Share} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, View, Text, TouchableHighlight, Share} = ReactNative;
 
 exports.framework = 'React';
 exports.title = 'Share';
@@ -31,6 +31,9 @@ class ShareMessageExample extends React.Component<$FlowFixMeProps, any> {
   _shareText: Function;
   _showResult: Function;
 
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   constructor(props) {
     super(props);
 
@@ -103,7 +106,7 @@ class ShareMessageExample extends React.Component<$FlowFixMeProps, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/Shared/RNTesterTypes.js b/RNTester/js/Shared/RNTesterTypes.js
new file mode 100644
index 00000000000000..00b91ea0ae7109
--- /dev/null
+++ b/RNTester/js/Shared/RNTesterTypes.js
@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+import type {ComponentType} from 'React';
+
+export type RNTesterProps = $ReadOnly<{|
+  navigator?: ?$ReadOnlyArray<
+    $ReadOnly<{|
+      title: string,
+      component: ComponentType<any>,
+      backButtonTitle: string,
+      passProps: any,
+    |}>,
+  >,
+|}>;
diff --git a/RNTester/js/Shared/TextLegend.js b/RNTester/js/Shared/TextLegend.js
new file mode 100644
index 00000000000000..56cf17607c6b64
--- /dev/null
+++ b/RNTester/js/Shared/TextLegend.js
@@ -0,0 +1,242 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const React = require('React');
+const {Picker, Text, View} = require('react-native');
+
+class TextLegend extends React.Component<*, *> {
+  state = {
+    textMetrics: [],
+    language: 'english',
+    alignment: 'left',
+    fontSize: 50,
+  };
+
+  render() {
+    const PANGRAMS = {
+      arabic:
+        'صِف خَلقَ خَودِ كَمِثلِ الشَمسِ إِذ بَزَغَت — يَحظى الضَجيعُ بِها نَجلاءَ مِعطارِ',
+      chinese: 'Innovation in China 中国智造，慧及全球 0123456789',
+      english: 'The quick brown fox jumps over the lazy dog.',
+      emoji: '🙏🏾🚗💩😍🤯👩🏽‍🔧🇨🇦💯',
+      german: 'Falsches Üben von Xylophonmusik quält jeden größeren Zwerg',
+      greek: 'Ταχίστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός',
+      hebrew: 'דג סקרן שט בים מאוכזב ולפתע מצא חברה',
+      hindi:
+        'ऋषियों को सताने वाले दुष्ट राक्षसों के राजा रावण का सर्वनाश करने वाले विष्णुवतार भगवान श्रीराम, अयोध्या के महाराज दशरथ के बड़े सपुत्र थे।',
+      igbo:
+        'Nne, nna, wepụ he’l’ụjọ dum n’ime ọzụzụ ụmụ, vufesi obi nye Chukwu, ṅụrịanụ, gbakọọnụ kpaa, kwee ya ka o guzoshie ike; ọ ghaghị ito, nwapụta ezi agwa',
+      irish:
+        'D’fhuascail Íosa Úrmhac na hÓighe Beannaithe pór Éava agus Ádhaimh',
+      japanese:
+        '色は匂へど 散りぬるを 我が世誰ぞ 常ならむ 有為の奥山 今日越えて 浅き夢見じ 酔ひもせず',
+      korean:
+        '키스의 고유조건은 입술끼리 만나야 하고 특별한 기술은 필요치 않다',
+      norwegian:
+        'Vår sære Zulu fra badeøya spilte jo whist og quickstep i min taxi.',
+      polish: 'Jeżu klątw, spłódź Finom część gry hańb!',
+      romanian: 'Muzicologă în bej vând whisky și tequila, preț fix.',
+      russian: 'Эх, чужак, общий съём цен шляп (юфть) – вдрызг!',
+      swedish: 'Yxskaftbud, ge vår WC-zonmö IQ-hjälp.',
+      thai:
+        'เป็นมนุษย์สุดประเสริฐเลิศคุณค่า กว่าบรรดาฝูงสัตว์เดรัจฉาน จงฝ่าฟันพัฒนาวิชาการ อย่าล้างผลาญฤๅเข่นฆ่าบีฑาใคร ไม่ถือโทษโกรธแช่งซัดฮึดฮัดด่า หัดอภัยเหมือนกีฬาอัชฌาสัย ปฏิบัติประพฤติกฎกำหนดใจ พูดจาให้จ๊ะๆ จ๋าๆ น่าฟังเอยฯ',
+    };
+    return (
+      <View>
+        <Text
+          onPress={() =>
+            this.setState(prevState => ({fontSize: prevState.fontSize + 3}))
+          }>
+          Increase size
+        </Text>
+        <Text
+          onPress={() =>
+            this.setState(prevState => ({fontSize: prevState.fontSize - 3}))
+          }>
+          Decrease size
+        </Text>
+        <Picker
+          selectedValue={this.state.language}
+          onValueChange={itemValue => this.setState({language: itemValue})}>
+          {Object.keys(PANGRAMS).map(x => (
+            <Picker.Item
+              label={x[0].toUpperCase() + x.substring(1)}
+              key={x}
+              value={x}
+            />
+          ))}
+        </Picker>
+        <View>
+          {this.state.textMetrics.map(
+            ({
+              x,
+              y,
+              width,
+              height,
+              capHeight,
+              ascender,
+              descender,
+              xHeight,
+            }) => {
+              return [
+                <View
+                  key="baseline view"
+                  style={{
+                    top: y + ascender,
+                    height: 1,
+                    left: 0,
+                    right: 0,
+                    position: 'absolute',
+                    backgroundColor: 'red',
+                  }}
+                />,
+                <Text
+                  key="baseline text"
+                  style={{
+                    top: y + ascender,
+                    right: 0,
+                    position: 'absolute',
+                    color: 'red',
+                  }}>
+                  Baseline
+                </Text>,
+                <View
+                  key="capheight view"
+                  style={{
+                    top: y + ascender - capHeight,
+                    height: 1,
+                    left: 0,
+                    right: 0,
+                    position: 'absolute',
+                    backgroundColor: 'green',
+                  }}
+                />,
+                <Text
+                  key="capheight text"
+                  style={{
+                    top: y + ascender - capHeight,
+                    right: 0,
+                    position: 'absolute',
+                    color: 'green',
+                  }}>
+                  Capheight
+                </Text>,
+                <View
+                  key="xheight view"
+                  style={{
+                    top: y + ascender - xHeight,
+                    height: 1,
+                    left: 0,
+                    right: 0,
+                    position: 'absolute',
+                    backgroundColor: 'blue',
+                  }}
+                />,
+                <Text
+                  key="xheight text"
+                  style={{
+                    top: y + ascender - xHeight,
+                    right: 0,
+                    position: 'absolute',
+                    color: 'blue',
+                  }}>
+                  X-height
+                </Text>,
+                <View
+                  key="descender view"
+                  style={{
+                    top: y + ascender + descender,
+                    height: 1,
+                    left: 0,
+                    right: 0,
+                    position: 'absolute',
+                    backgroundColor: 'orange',
+                  }}
+                />,
+                <Text
+                  key="descender text"
+                  style={{
+                    top: y + ascender + descender,
+                    right: 0,
+                    position: 'absolute',
+                    color: 'orange',
+                  }}>
+                  Descender
+                </Text>,
+                <View
+                  key="end of text view"
+                  style={{
+                    top: y,
+                    height: height,
+                    width: 1,
+                    left: x + width,
+                    position: 'absolute',
+                    backgroundColor: 'brown',
+                  }}
+                />,
+                <Text
+                  key="end of text text"
+                  style={{
+                    top: y,
+                    left: x + width + 5,
+                    position: 'absolute',
+                    color: 'brown',
+                  }}>
+                  End of text
+                </Text>,
+                <View
+                  key="start of text view"
+                  style={{
+                    top: y,
+                    height: height,
+                    width: 1,
+                    left: x,
+                    position: 'absolute',
+                    backgroundColor: 'brown',
+                  }}
+                />,
+                <Text
+                  key="start of text text"
+                  style={{
+                    top: y,
+                    left: x + 5,
+                    position: 'absolute',
+                    color: 'brown',
+                  }}>
+                  Start of text
+                </Text>,
+              ];
+            },
+          )}
+          <Text
+            onTextLayout={event => {
+              this.setState({textMetrics: event.nativeEvent.lines});
+            }}
+            style={{
+              fontSize: this.state.fontSize,
+              textAlign: this.state.alignment,
+            }}>
+            {PANGRAMS[this.state.language]}
+          </Text>
+        </View>
+        <Picker
+          selectedValue={this.state.alignment}
+          onValueChange={itemValue => this.setState({alignment: itemValue})}>
+          <Picker.Item label="Left align" value="left" />
+          <Picker.Item label="Center align" value="center" />
+          <Picker.Item label="Right align" value="right" />
+        </Picker>
+      </View>
+    );
+  }
+}
+module.exports = TextLegend;
diff --git a/RNTester/js/SliderExample.js b/RNTester/js/SliderExample.js
index 824b5b69844d57..34d9fc8c847f66 100644
--- a/RNTester/js/SliderExample.js
+++ b/RNTester/js/SliderExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Slider, Text, StyleSheet, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Slider, Text, StyleSheet, View} = ReactNative;
 
 class SliderExample extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
   static defaultProps = {
@@ -68,11 +68,7 @@ class SlidingCompleteExample extends React.Component<
   }
 }
 
-var styles = StyleSheet.create({
-  slider: {
-    height: 10,
-    margin: 10,
-  },
+const styles = StyleSheet.create({
   text: {
     fontSize: 14,
     textAlign: 'center',
diff --git a/RNTester/js/SnapshotExample.js b/RNTester/js/SnapshotExample.js
index f77277a53cbf32..6a6a90451fffd9 100644
--- a/RNTester/js/SnapshotExample.js
+++ b/RNTester/js/SnapshotExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/StatusBarExample.js b/RNTester/js/StatusBarExample.js
index e66e94a605db1d..dece8e23fa2ed6 100644
--- a/RNTester/js/StatusBarExample.js
+++ b/RNTester/js/StatusBarExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -498,7 +498,7 @@ const examples = [
 
 exports.examples = examples;
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     justifyContent: 'center',
@@ -518,11 +518,6 @@ var styles = StyleSheet.create({
     backgroundColor: '#eeeeee',
     padding: 10,
   },
-  title: {
-    marginTop: 16,
-    marginBottom: 8,
-    fontWeight: 'bold',
-  },
   modalButton: {
     marginTop: 10,
   },
diff --git a/RNTester/js/SwipeableFlatListExample.js b/RNTester/js/SwipeableFlatListExample.js
index 4c8716e8c838a3..7cf2a0810dcc50 100644
--- a/RNTester/js/SwipeableFlatListExample.js
+++ b/RNTester/js/SwipeableFlatListExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 'use strict';
 
 const React = require('react');
-const createReactClass = require('create-react-class');
 const ReactNative = require('react-native');
 const {
   Image,
@@ -24,6 +23,8 @@ const {
 
 const RNTesterPage = require('./RNTesterPage');
 
+import type {RNTesterProps} from 'RNTesterTypes';
+
 const data = [
   {
     key: 'like',
@@ -42,14 +43,11 @@ const data = [
   },
 ];
 
-const SwipeableFlatListExample = createReactClass({
-  displayName: 'SwipeableFlatListExample',
-  statics: {
-    title: '<SwipeableFlatList>',
-    description: 'Performant, scrollable, swipeable list of data.',
-  },
+class SwipeableFlatListExample extends React.Component<RNTesterProps> {
+  static title = '<SwipeableFlatList>';
+  static description = 'Performant, scrollable, swipeable list of data.';
 
-  render: function() {
+  render() {
     return (
       <RNTesterPage
         title={this.props.navigator ? null : '<SwipeableListView>'}
@@ -64,9 +62,9 @@ const SwipeableFlatListExample = createReactClass({
         />
       </RNTesterPage>
     );
-  },
+  }
 
-  _renderItem: function({item}): ?React.Element<any> {
+  _renderItem({item}): ?React.Element<any> {
     return (
       <View style={styles.row}>
         <Image style={styles.rowIcon} source={item.icon} />
@@ -75,9 +73,9 @@ const SwipeableFlatListExample = createReactClass({
         </View>
       </View>
     );
-  },
+  }
 
-  _renderQuickActions: function({item}: Object): ?React.Element<any> {
+  _renderQuickActions({item}: Object): ?React.Element<any> {
     return (
       <View style={styles.actionsContainer}>
         <TouchableHighlight
@@ -102,10 +100,10 @@ const SwipeableFlatListExample = createReactClass({
         </TouchableHighlight>
       </View>
     );
-  },
-});
+  }
+}
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     flexDirection: 'row',
     justifyContent: 'center',
diff --git a/RNTester/js/SwipeableListViewExample.js b/RNTester/js/SwipeableListViewExample.js
index ee359ed1fcf6d9..d8d82306e47b61 100644
--- a/RNTester/js/SwipeableListViewExample.js
+++ b/RNTester/js/SwipeableListViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,10 +10,8 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const {
   Image,
   SwipeableListView,
   TouchableHighlight,
@@ -21,31 +19,33 @@ var {
   Text,
   View,
   Alert,
-} = ReactNative;
+} = require('react-native');
 
-var RNTesterPage = require('./RNTesterPage');
+const RNTesterPage = require('./RNTesterPage');
 
-var SwipeableListViewSimpleExample = createReactClass({
-  displayName: 'SwipeableListViewSimpleExample',
-  statics: {
-    title: '<SwipeableListView>',
-    description: 'Performant, scrollable, swipeable list of data.',
-  },
+import type {RNTesterProps} from 'RNTesterTypes';
+import type {SwipeableListViewDataSource} from 'SwipeableListViewDataSource';
 
-  getInitialState: function() {
-    var ds = SwipeableListView.getNewDataSource();
-    return {
-      dataSource: ds.cloneWithRowsAndSections(...this._genDataSource({})),
-    };
-  },
+type State = {|
+  dataSource: SwipeableListViewDataSource,
+|};
 
-  _pressData: ({}: {[key: number]: boolean}),
+class SwipeableListViewSimpleExample extends React.Component<
+  RNTesterProps,
+  State,
+> {
+  static title = '<SwipeableListView>';
+  static description = 'Performant, scrollable, swipeable list of data.';
 
-  UNSAFE_componentWillMount: function() {
-    this._pressData = {};
-  },
+  state = {
+    dataSource: SwipeableListView.getNewDataSource().cloneWithRowsAndSections(
+      ...this._genDataSource({}),
+    ),
+  };
+
+  _pressData: {[key: number]: boolean} = {};
 
-  render: function() {
+  render(): React.Node {
     return (
       <RNTesterPage
         title={this.props.navigator ? null : '<SwipeableListView>'}
@@ -78,16 +78,11 @@ var SwipeableListViewSimpleExample = createReactClass({
         />
       </RNTesterPage>
     );
-  },
+  }
 
-  _renderRow: function(
-    rowData: Object,
-    sectionID: number,
-    rowID: number,
-    highlightRow: (sectionID: number, rowID: number) => void,
-  ) {
-    var rowHash = Math.abs(hashCode(rowData.id));
-    var imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
+  _renderRow(rowData: Object, sectionID: string, rowID: string) {
+    const rowHash = Math.abs(hashCode(rowData.id));
+    const imgSource = THUMB_URLS[rowHash % THUMB_URLS.length];
     return (
       <TouchableHighlight onPress={() => {}}>
         <View>
@@ -100,31 +95,32 @@ var SwipeableListViewSimpleExample = createReactClass({
         </View>
       </TouchableHighlight>
     );
-  },
+  }
 
-  _genDataSource: function(pressData: {[key: number]: boolean}): Array<any> {
-    var dataBlob = {};
-    var sectionIDs = ['Section 0'];
-    var rowIDs = [[]];
+  _genDataSource(pressData: {[key: number]: boolean}) {
+    const dataBlob = {};
+    const sectionIDs = ['Section 0'];
+    const rowIDs = [[]];
     /**
      * dataBlob example below:
-      {
-        'Section 0': {
-          'Row 0': {
-            id: '0',
-            text: 'row 0 text'
-          },
-          'Row 1': {
-            id: '1',
-            text: 'row 1 text'
-          }
-        }
-      }
-    */
-    // only one section in this example
+     *   {
+     *     'Section 0': {
+     *       'Row 0': {
+     *         id: '0',
+     *         text: 'row 0 text'
+     *       },
+     *       'Row 1': {
+     *         id: '1',
+     *         text: 'row 1 text'
+     *       }
+     *     }
+     *   }
+     */
+
+    // Only one section in this example
     dataBlob['Section 0'] = {};
-    for (var ii = 0; ii < 100; ii++) {
-      var pressedText = pressData[ii] ? ' (pressed)' : '';
+    for (let ii = 0; ii < 100; ii++) {
+      const pressedText = pressData[ii] ? ' (pressed)' : '';
       dataBlob[sectionIDs[0]]['Row ' + ii] = {
         id: 'Row ' + ii,
         text: 'Row ' + ii + pressedText,
@@ -132,11 +128,11 @@ var SwipeableListViewSimpleExample = createReactClass({
       rowIDs[0].push('Row ' + ii);
     }
     return [dataBlob, sectionIDs, rowIDs];
-  },
+  }
 
-  _renderSeperator: function(
-    sectionID: number,
-    rowID: number,
+  _renderSeperator(
+    sectionID: string,
+    rowID: string,
     adjacentRowHighlighted: boolean,
   ) {
     return (
@@ -148,10 +144,10 @@ var SwipeableListViewSimpleExample = createReactClass({
         }}
       />
     );
-  },
-});
+  }
+}
 
-var THUMB_URLS = [
+const THUMB_URLS = [
   require('./Thumbnails/like.png'),
   require('./Thumbnails/dislike.png'),
   require('./Thumbnails/call.png'),
@@ -165,19 +161,27 @@ var THUMB_URLS = [
   require('./Thumbnails/superlike.png'),
   require('./Thumbnails/victory.png'),
 ];
-var LOREM_IPSUM =
-  'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi adipiscing. Sea id integre luptatum. In tota sale consequuntur nec. Erat ocurreret mei ei. Eu paulo sapientem vulputate est, vel an accusam intellegam interesset. Nam eu stet pericula reprimique, ea vim illud modus, putant invidunt reprehendunt ne qui.';
 
-/* eslint no-bitwise: 0 */
-var hashCode = function(str) {
-  var hash = 15;
-  for (var ii = str.length - 1; ii >= 0; ii--) {
+const LOREM_IPSUM = [
+  'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix ',
+  'civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi ',
+  'adipiscing. Sea id integre luptatum. In tota sale consequuntur nec. Erat ',
+  'ocurreret mei ei. Eu paulo sapientem vulputate est, vel an accusam ',
+  'intellegam interesset. Nam eu stet pericula reprimique, ea vim illud modus, ',
+  'putant invidunt reprehendunt ne qui.',
+].join('');
+
+/* eslint-disable no-bitwise */
+const hashCode = str => {
+  let hash = 15;
+  for (let ii = str.length - 1; ii >= 0; ii--) {
     hash = (hash << 5) - hash + str.charCodeAt(ii);
   }
   return hash;
 };
+/* eslint-enable no-bitwise */
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     flexDirection: 'row',
     justifyContent: 'center',
diff --git a/RNTester/js/SwitchExample.js b/RNTester/js/SwitchExample.js
index 2b9988bf8a057d..8c698e37058b1b 100644
--- a/RNTester/js/SwitchExample.js
+++ b/RNTester/js/SwitchExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,38 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Platform, Switch, Text, View} = ReactNative;
+const React = require('react');
+const {Switch, Text, View} = require('react-native');
 
-class BasicSwitchExample extends React.Component<{}, $FlowFixMeState> {
+type OnOffIndicatorProps = $ReadOnly<{|on: boolean, testID: string|}>;
+function OnOffIndicator({on, testID}: OnOffIndicatorProps) {
+  return <Text testID={testID}>{on ? 'On' : 'Off'}</Text>;
+}
+
+type ExampleRowProps = $ReadOnly<{|children: React.Node|}>;
+function ExampleRow({children}: ExampleRowProps) {
+  return (
+    <View
+      style={{
+        flexDirection: 'row',
+        justifyContent: 'space-between',
+        alignItems: 'center',
+        marginBottom: 10,
+      }}>
+      {children}
+    </View>
+  );
+}
+
+type SimpleSwitchExampleState = $ReadOnly<{|
+  trueSwitchIsOn: boolean,
+  falseSwitchIsOn: boolean,
+|}>;
+
+class BasicSwitchExample extends React.Component<
+  {||},
+  SimpleSwitchExampleState,
+> {
   state = {
     trueSwitchIsOn: true,
     falseSwitchIsOn: false,
@@ -23,26 +50,72 @@ class BasicSwitchExample extends React.Component<{}, $FlowFixMeState> {
   render() {
     return (
       <View>
-        <Switch
-          onValueChange={value => this.setState({falseSwitchIsOn: value})}
-          style={{marginBottom: 10}}
-          value={this.state.falseSwitchIsOn}
-        />
-        <Switch
-          onValueChange={value => this.setState({trueSwitchIsOn: value})}
-          value={this.state.trueSwitchIsOn}
-        />
+        <ExampleRow>
+          <Switch
+            testID="on-off-initial-off"
+            onValueChange={value => this.setState({falseSwitchIsOn: value})}
+            value={this.state.falseSwitchIsOn}
+          />
+          <OnOffIndicator
+            on={this.state.falseSwitchIsOn}
+            testID="on-off-initial-off-indicator"
+          />
+        </ExampleRow>
+        <ExampleRow>
+          <Switch
+            testID="on-off-initial-on"
+            onValueChange={value => this.setState({trueSwitchIsOn: value})}
+            value={this.state.trueSwitchIsOn}
+          />
+          <OnOffIndicator
+            on={this.state.trueSwitchIsOn}
+            testID="on-off-initial-on-indicator"
+          />
+        </ExampleRow>
       </View>
     );
   }
 }
 
-class DisabledSwitchExample extends React.Component<{}> {
+class DisabledSwitchExample extends React.Component<
+  {||},
+  SimpleSwitchExampleState,
+> {
+  state = {
+    trueSwitchIsOn: true,
+    falseSwitchIsOn: false,
+  };
+
   render() {
     return (
       <View>
-        <Switch disabled={true} style={{marginBottom: 10}} value={true} />
-        <Switch disabled={true} value={false} />
+        <ExampleRow>
+          <Switch
+            testID="disabled-initial-off"
+            disabled={true}
+            onValueChange={value => this.setState({falseSwitchIsOn: value})}
+            value={this.state.falseSwitchIsOn}
+          />
+
+          <OnOffIndicator
+            on={this.state.falseSwitchIsOn}
+            testID="disabled-initial-off-indicator"
+          />
+        </ExampleRow>
+
+        <ExampleRow>
+          <Switch
+            testID="disabled-initial-on"
+            disabled={true}
+            onValueChange={value => this.setState({trueSwitchIsOn: value})}
+            value={this.state.trueSwitchIsOn}
+          />
+
+          <OnOffIndicator
+            on={this.state.trueSwitchIsOn}
+            testID="disabled-initial-on-indicator"
+          />
+        </ExampleRow>
       </View>
     );
   }
@@ -125,7 +198,7 @@ class EventSwitchExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var examples = [
+const examples = [
   {
     title: 'Switches can be set to true or false',
     render(): React.Element<any> {
diff --git a/RNTester/js/TVEventHandlerExample.js b/RNTester/js/TVEventHandlerExample.js
index 757a27ef9466cb..4a5dd7ea352d7c 100644
--- a/RNTester/js/TVEventHandlerExample.js
+++ b/RNTester/js/TVEventHandlerExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,17 +10,10 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
+const React = require('react');
+const ReactNative = require('react-native');
 
-var {
-  Platform,
-  StyleSheet,
-  View,
-  Text,
-  TouchableOpacity,
-  TVEventHandler,
-} = ReactNative;
+const {Platform, View, Text, TouchableOpacity, TVEventHandler} = ReactNative;
 
 exports.framework = 'React';
 exports.title = 'TVEventHandler example';
@@ -40,6 +33,9 @@ class TVEventHandlerView extends React.Component<
     lastEventType: string,
   },
 > {
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   constructor(props) {
     super(props);
     this.state = {
diff --git a/RNTester/js/TabBarIOSBarStyleExample.js b/RNTester/js/TabBarIOSBarStyleExample.js
index 0fd00eaad5f366..a8dfd135c4eced 100644
--- a/RNTester/js/TabBarIOSBarStyleExample.js
+++ b/RNTester/js/TabBarIOSBarStyleExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,11 +22,11 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, TabBarIOS, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, TabBarIOS, Text, View} = ReactNative;
 
-var base64Icon =
+const base64Icon =
   'data:image/png;base64,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';
 
 class TabBarIOSBarStyleExample extends React.Component<{}> {
@@ -47,7 +47,7 @@ class TabBarIOSBarStyleExample extends React.Component<{}> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   tabContent: {
     flex: 1,
     alignItems: 'center',
diff --git a/RNTester/js/TabBarIOSExample.js b/RNTester/js/TabBarIOSExample.js
index 16f69e9a7cf2ae..6fc9015ce2eda6 100644
--- a/RNTester/js/TabBarIOSExample.js
+++ b/RNTester/js/TabBarIOSExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,11 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, TabBarIOS, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, TabBarIOS, Text, View} = ReactNative;
 
-var base64Icon =
+const base64Icon =
   'data:image/png;base64,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';
 
 class TabBarExample extends React.Component<{}, $FlowFixMeState> {
@@ -89,7 +89,7 @@ class TabBarExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   tabContent: {
     flex: 1,
     alignItems: 'center',
diff --git a/RNTester/js/TextExample.android.js b/RNTester/js/TextExample.android.js
index e38a9270219349..a8b23ad87b2cba 100644
--- a/RNTester/js/TextExample.android.js
+++ b/RNTester/js/TextExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,12 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Image, StyleSheet, Text, View} = ReactNative;
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const React = require('react');
+const ReactNative = require('react-native');
+const {Image, StyleSheet, Text, View} = ReactNative;
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
+const TextLegend = require('./Shared/TextLegend');
 
 class Entity extends React.Component<$FlowFixMeProps> {
   render() {
@@ -42,7 +43,7 @@ class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var curStyle = {
+    const curStyle = {
       fontWeight: this.state.fontWeight,
       fontSize: this.state.fontSize,
     };
@@ -87,6 +88,9 @@ class TextExample extends React.Component<{}> {
             This text is indented by 10px padding on all sides.
           </Text>
         </RNTesterBlock>
+        <RNTesterBlock title="Text metrics legend">
+          <TextLegend />
+        </RNTesterBlock>
         <RNTesterBlock title="Font Family">
           <Text style={{fontFamily: 'sans-serif'}}>Sans-Serif</Text>
           <Text style={{fontFamily: 'sans-serif', fontWeight: 'bold'}}>
@@ -531,12 +535,62 @@ class TextExample extends React.Component<{}> {
             make text look slightly misaligned when centered vertically.
           </Text>
         </RNTesterBlock>
+        <RNTesterBlock title="Text transform">
+          <Text style={{textTransform: 'uppercase'}}>
+            This text should be uppercased.
+          </Text>
+          <Text style={{textTransform: 'lowercase'}}>
+            This TEXT SHOULD be lowercased.
+          </Text>
+          <Text style={{textTransform: 'capitalize'}}>
+            This text should be CAPITALIZED.
+          </Text>
+          <Text style={{textTransform: 'capitalize'}}>
+            Mixed: <Text style={{textTransform: 'uppercase'}}>uppercase </Text>
+            <Text style={{textTransform: 'lowercase'}}>LoWeRcAsE </Text>
+            <Text style={{textTransform: 'capitalize'}}>
+              capitalize each word
+            </Text>
+          </Text>
+          <Text>
+            Should be "ABC":
+            <Text style={{textTransform: 'uppercase'}}>
+              a<Text>b</Text>c
+            </Text>
+          </Text>
+          <Text>
+            Should be "AbC":
+            <Text style={{textTransform: 'uppercase'}}>
+              a<Text style={{textTransform: 'none'}}>b</Text>c
+            </Text>
+          </Text>
+          <Text style={{textTransform: 'none'}}>
+            {
+              '.aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   '
+            }
+          </Text>
+          <Text style={{textTransform: 'uppercase'}}>
+            {
+              '.aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   '
+            }
+          </Text>
+          <Text style={{textTransform: 'lowercase'}}>
+            {
+              '.aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   '
+            }
+          </Text>
+          <Text style={{textTransform: 'capitalize'}}>
+            {
+              '.aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   '
+            }
+          </Text>
+        </RNTesterBlock>
       </RNTesterPage>
     );
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   backgroundColorText: {
     left: 5,
     backgroundColor: 'rgba(100, 100, 100, 0.3)',
diff --git a/RNTester/js/TextExample.ios.js b/RNTester/js/TextExample.ios.js
index b0a1ccd696800c..439c9c714c6f7d 100644
--- a/RNTester/js/TextExample.ios.js
+++ b/RNTester/js/TextExample.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,10 +11,10 @@
 'use strict';
 
 const Platform = require('Platform');
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {Image, Text, TextInput, View, LayoutAnimation, Button} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Text, TextInput, View, LayoutAnimation, Button} = ReactNative;
+const TextLegend = require('./Shared/TextLegend');
 
 type TextAlignExampleRTLState = {|
   isRTL: boolean,
@@ -91,7 +91,7 @@ class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var curStyle = {
+    const curStyle = {
       fontWeight: this.state.fontWeight,
       fontSize: this.state.fontSize,
     };
@@ -121,12 +121,23 @@ class AttributeToggler extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var AdjustingFontSize = createReactClass({
-  displayName: 'AdjustingFontSize',
-  getInitialState: function() {
-    return {dynamicText: '', shouldRender: true};
-  },
-  reset: function() {
+type AdjustingFontSizeProps = $ReadOnly<{||}>;
+
+type AdjustingFontSizeState = {|
+  dynamicText: string,
+  shouldRender: boolean,
+|};
+
+class AdjustingFontSize extends React.Component<
+  AdjustingFontSizeProps,
+  AdjustingFontSizeState,
+> {
+  state = {
+    dynamicText: '',
+    shouldRender: true,
+  };
+
+  reset = () => {
     LayoutAnimation.easeInEaseOut();
     this.setState({
       shouldRender: false,
@@ -138,23 +149,26 @@ var AdjustingFontSize = createReactClass({
         shouldRender: true,
       });
     }, 300);
-  },
-  addText: function() {
+  };
+
+  addText = () => {
     this.setState({
       dynamicText:
         this.state.dynamicText +
         (Math.floor((Math.random() * 10) % 2) ? ' foo' : ' bar'),
     });
-  },
-  removeText: function() {
+  };
+
+  removeText = () => {
     this.setState({
       dynamicText: this.state.dynamicText.slice(
         0,
         this.state.dynamicText.length - 4,
       ),
     });
-  },
-  render: function() {
+  };
+
+  render() {
     if (!this.state.shouldRender) {
       return <View />;
     }
@@ -220,13 +234,13 @@ var AdjustingFontSize = createReactClass({
         </View>
       </View>
     );
-  },
-});
+  }
+}
 
 class TextBaseLineLayoutExample extends React.Component<*, *> {
   render() {
-    var texts = [];
-    for (var i = 9; i >= 0; i--) {
+    const texts = [];
+    for (let i = 9; i >= 0; i--) {
       texts.push(
         <Text key={i} style={{fontSize: 8 + i * 5, backgroundColor: '#eee'}}>
           {i}
@@ -275,6 +289,130 @@ class TextBaseLineLayoutExample extends React.Component<*, *> {
   }
 }
 
+class TextRenderInfoExample extends React.Component<*, *> {
+  state = {
+    textMetrics: {
+      x: 0,
+      y: 0,
+      width: 0,
+      height: 0,
+      capHeight: 0,
+      descender: 0,
+      ascender: 0,
+      xHeight: 0,
+    },
+    numberOfTextBlocks: 1,
+    fontSize: 14,
+  };
+
+  render() {
+    const topOfBox =
+      this.state.textMetrics.y +
+      this.state.textMetrics.height -
+      (this.state.textMetrics.descender + this.state.textMetrics.capHeight);
+    return (
+      <View>
+        <View>
+          <View
+            style={{
+              position: 'absolute',
+              left: this.state.textMetrics.x + this.state.textMetrics.width,
+              top: topOfBox,
+              width: 5,
+              height: Math.ceil(
+                this.state.textMetrics.capHeight -
+                  this.state.textMetrics.xHeight,
+              ),
+              backgroundColor: 'red',
+            }}
+          />
+          <View
+            style={{
+              position: 'absolute',
+              left: this.state.textMetrics.x + this.state.textMetrics.width,
+              top:
+                topOfBox +
+                (this.state.textMetrics.capHeight -
+                  this.state.textMetrics.xHeight),
+              width: 5,
+              height: Math.ceil(this.state.textMetrics.xHeight),
+              backgroundColor: 'green',
+            }}
+          />
+          <Text
+            style={{fontSize: this.state.fontSize}}
+            onTextLayout={event => {
+              const {lines} = event.nativeEvent;
+              if (lines.length > 0) {
+                this.setState({textMetrics: lines[lines.length - 1]});
+              }
+            }}>
+            {new Array(this.state.numberOfTextBlocks)
+              .fill('A tiny block of text.')
+              .join(' ')}
+          </Text>
+        </View>
+        <Text
+          onPress={() =>
+            this.setState({
+              numberOfTextBlocks: this.state.numberOfTextBlocks + 1,
+            })
+          }>
+          More text
+        </Text>
+        <Text
+          onPress={() => this.setState({fontSize: this.state.fontSize + 1})}>
+          Increase size
+        </Text>
+        <Text
+          onPress={() => this.setState({fontSize: this.state.fontSize - 1})}>
+          Decrease size
+        </Text>
+      </View>
+    );
+  }
+}
+
+class TextWithCapBaseBox extends React.Component<*, *> {
+  state = {
+    textMetrics: {
+      x: 0,
+      y: 0,
+      width: 0,
+      height: 0,
+      capHeight: 0,
+      descender: 0,
+      ascender: 0,
+      xHeight: 0,
+    },
+  };
+  render() {
+    return (
+      <Text
+        onTextLayout={event => {
+          const {lines} = event.nativeEvent;
+          if (lines.length > 0) {
+            this.setState({textMetrics: lines[0]});
+          }
+        }}
+        style={[
+          {
+            marginTop: Math.ceil(
+              -(
+                this.state.textMetrics.ascender -
+                this.state.textMetrics.capHeight
+              ),
+            ),
+            marginBottom: Math.ceil(-this.state.textMetrics.descender),
+          },
+          this.props.style,
+        ]}>
+        {this.props.children}
+      </Text>
+    );
+  }
+}
+
 exports.title = '<Text>';
 exports.description = 'Base component for rendering styled text.';
 exports.displayName = 'TextExample';
@@ -290,6 +428,24 @@ exports.examples = [
       );
     },
   },
+  {
+    title: 'Text metrics',
+    render: function() {
+      return <TextRenderInfoExample />;
+    },
+  },
+  {
+    title: 'Text metrics legend',
+    render: () => <TextLegend />,
+  },
+  {
+    title: 'Baseline capheight box',
+    render: () => (
+      <View style={{backgroundColor: 'red'}}>
+        <TextWithCapBaseBox>Some example text.</TextWithCapBaseBox>
+      </View>
+    ),
+  },
   {
     title: 'Padding',
     render: function() {
diff --git a/RNTester/js/TextInputExample.android.js b/RNTester/js/TextInputExample.android.js
index 5fba895bf2a551..7bed8d83f37a4e 100644
--- a/RNTester/js/TextInputExample.android.js
+++ b/RNTester/js/TextInputExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Text, TextInput, View, StyleSheet, Slider, Switch} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Text, TextInput, View, StyleSheet, Slider, Switch} = ReactNative;
 
 class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -48,7 +48,8 @@ class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
           }
           onContentSizeChange={event =>
             this.updateText(
-              'onContentSizeChange size: ' + event.nativeEvent.contentSize,
+              'onContentSizeChange size: ' +
+                JSON.stringify(event.nativeEvent.contentSize),
             )
           }
           onEndEditing={event =>
@@ -75,14 +76,17 @@ class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
 }
 
 class RewriteExample extends React.Component<$FlowFixMeProps, $FlowFixMeState> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_android_fb) This comment suppresses
+   * an error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: ''};
   }
   render() {
-    var limit = 20;
-    var remainder = limit - this.state.text.length;
-    var remainderColor = remainder > 5 ? 'blue' : 'red';
+    const limit = 20;
+    const remainder = limit - this.state.text.length;
+    const remainderColor = remainder > 5 ? 'blue' : 'red';
     return (
       /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
        * when making Flow check .android.js files. */
@@ -113,6 +117,9 @@ class TokenizedTextExample extends React.Component<
   $FlowFixMeProps,
   $FlowFixMeState,
 > {
+  /* $FlowFixMe(>=0.85.0 site=react_native_android_fb) This comment suppresses
+   * an error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: 'Hello #World'};
@@ -247,10 +254,10 @@ class ToggleDefaultPaddingExample extends React.Component<
 }
 
 type SelectionExampleState = {
-  selection: {
+  selection: $ReadOnly<{|
     start: number,
-    end: number,
-  },
+    end?: number,
+  |}>,
   value: string,
 };
 
@@ -273,7 +280,7 @@ class SelectionExample extends React.Component<
   }
 
   getRandomPosition() {
-    var length = this.state.value.length;
+    const length = this.state.value.length;
     return Math.round(Math.random() * length);
   }
 
@@ -283,7 +290,10 @@ class SelectionExample extends React.Component<
   }
 
   selectRandom() {
-    var positions = [this.getRandomPosition(), this.getRandomPosition()].sort();
+    const positions = [
+      this.getRandomPosition(),
+      this.getRandomPosition(),
+    ].sort();
     this.select(...positions);
   }
 
@@ -296,7 +306,7 @@ class SelectionExample extends React.Component<
   }
 
   render() {
-    var length = this.state.value.length;
+    const length = this.state.value.length;
 
     return (
       <View>
@@ -358,7 +368,7 @@ class AutogrowingTextInputExample extends React.Component<{}> {
   render() {
     /* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was found
      * when making Flow check .android.js files. */
-    var {style, multiline, ...props} = this.props;
+    const {style, multiline, ...props} = this.props;
     return (
       <View>
         <Text>Width:</Text>
@@ -410,7 +420,7 @@ class AutogrowingTextInputExample extends React.Component<{}> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   multiline: {
     height: 60,
     fontSize: 16,
@@ -458,8 +468,8 @@ exports.examples = [
   {
     title: 'Auto-capitalize',
     render: function() {
-      var autoCapitalizeTypes = ['none', 'sentences', 'words', 'characters'];
-      var examples = autoCapitalizeTypes.map(type => {
+      const autoCapitalizeTypes = ['none', 'sentences', 'words', 'characters'];
+      const examples = autoCapitalizeTypes.map(type => {
         return (
           <TextInput
             key={type}
@@ -494,8 +504,13 @@ exports.examples = [
   {
     title: 'Keyboard types',
     render: function() {
-      var keyboardTypes = ['default', 'email-address', 'numeric', 'phone-pad'];
-      var examples = keyboardTypes.map(type => {
+      const keyboardTypes = [
+        'default',
+        'email-address',
+        'numeric',
+        'phone-pad',
+      ];
+      const examples = keyboardTypes.map(type => {
         return (
           <TextInput
             key={type}
@@ -763,7 +778,7 @@ exports.examples = [
   {
     title: 'Return key',
     render: function() {
-      var returnKeyTypes = [
+      const returnKeyTypes = [
         'none',
         'go',
         'search',
@@ -772,8 +787,8 @@ exports.examples = [
         'previous',
         'next',
       ];
-      var returnKeyLabels = ['Compile', 'React Native'];
-      var examples = returnKeyTypes.map(type => {
+      const returnKeyLabels = ['Compile', 'React Native'];
+      const examples = returnKeyTypes.map(type => {
         return (
           <TextInput
             key={type}
@@ -783,7 +798,7 @@ exports.examples = [
           />
         );
       });
-      var types = returnKeyLabels.map(type => {
+      const types = returnKeyLabels.map(type => {
         return (
           <TextInput
             key={type}
diff --git a/RNTester/js/TextInputExample.ios.js b/RNTester/js/TextInputExample.ios.js
index 39fc77f82ee68c..43cf4bd0fdb5d0 100644
--- a/RNTester/js/TextInputExample.ios.js
+++ b/RNTester/js/TextInputExample.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,9 +12,9 @@
 
 const Button = require('Button');
 const InputAccessoryView = require('InputAccessoryView');
-var React = require('react');
-var ReactNative = require('react-native');
-var {Text, TextInput, View, StyleSheet, Slider, Switch} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Text, TextInput, View, StyleSheet, Slider, Switch, Alert} = ReactNative;
 
 class WithLabel extends React.Component<$FlowFixMeProps> {
   render() {
@@ -71,7 +71,7 @@ class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
               'onSelectionChange range: ' +
                 event.nativeEvent.selection.start +
                 ',' +
-                event.nativeEvent.selection.end,
+                (event.nativeEvent.selection.end || ''),
             )
           }
           onKeyPress={event => {
@@ -92,6 +92,9 @@ class TextEventsExample extends React.Component<{}, $FlowFixMeState> {
 }
 
 class TextInputAccessoryViewExample extends React.Component<{}, *> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: 'Placeholder Text'};
@@ -121,14 +124,17 @@ class TextInputAccessoryViewExample extends React.Component<{}, *> {
 }
 
 class RewriteExample extends React.Component<$FlowFixMeProps, any> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: ''};
   }
   render() {
-    var limit = 20;
-    var remainder = limit - this.state.text.length;
-    var remainderColor = remainder > 5 ? 'blue' : 'red';
+    const limit = 20;
+    const remainder = limit - this.state.text.length;
+    const remainderColor = remainder > 5 ? 'blue' : 'red';
     return (
       <View style={styles.rewriteContainer}>
         <TextInput
@@ -153,6 +159,9 @@ class RewriteExampleInvalidCharacters extends React.Component<
   $FlowFixMeProps,
   any,
 > {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: ''};
@@ -174,6 +183,9 @@ class RewriteExampleInvalidCharacters extends React.Component<
 }
 
 class RewriteExampleKana extends React.Component<$FlowFixMeProps, any> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: ''};
@@ -195,6 +207,9 @@ class RewriteExampleKana extends React.Component<$FlowFixMeProps, any> {
 }
 
 class SecureEntryExample extends React.Component<$FlowFixMeProps, any> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: ''};
@@ -216,6 +231,9 @@ class SecureEntryExample extends React.Component<$FlowFixMeProps, any> {
 }
 
 class TokenizedTextExample extends React.Component<$FlowFixMeProps, any> {
+  /* $FlowFixMe(>=0.85.0 site=react_native_ios_fb) This comment suppresses an
+   * error found when Flow v0.85 was deployed. To see the error, delete this
+   * comment and run Flow. */
   constructor(props) {
     super(props);
     this.state = {text: 'Hello #World'};
@@ -330,10 +348,10 @@ class BlurOnSubmitExample extends React.Component<{}> {
 }
 
 type SelectionExampleState = {
-  selection: {|
+  selection: $ReadOnly<{|
     start: number,
     end?: number,
-  |},
+  |}>,
   value: string,
 };
 
@@ -356,7 +374,7 @@ class SelectionExample extends React.Component<
   }
 
   getRandomPosition() {
-    var length = this.state.value.length;
+    const length = this.state.value.length;
     return Math.round(Math.random() * length);
   }
 
@@ -366,7 +384,7 @@ class SelectionExample extends React.Component<
   }
 
   selectRandom() {
-    var positions = [this.getRandomPosition(), this.getRandomPosition()].sort(
+    const positions = [this.getRandomPosition(), this.getRandomPosition()].sort(
       (a, b) => a - b,
     );
     this.select(...positions);
@@ -381,7 +399,7 @@ class SelectionExample extends React.Component<
   }
 
   render() {
-    var length = this.state.value.length;
+    const length = this.state.value.length;
 
     return (
       <View>
@@ -436,7 +454,7 @@ class AutogrowingTextInputExample extends React.Component<
   }
 
   render() {
-    var {style, multiline, ...props} = this.props;
+    const {style, multiline, ...props} = this.props;
     return (
       <View>
         <Text>Width:</Text>
@@ -471,10 +489,7 @@ class AutogrowingTextInputExample extends React.Component<
   }
 }
 
-var styles = StyleSheet.create({
-  page: {
-    paddingBottom: 300,
-  },
+const styles = StyleSheet.create({
   default: {
     borderWidth: StyleSheet.hairlineWidth,
     borderColor: '#0f0f0f',
@@ -502,13 +517,6 @@ var styles = StyleSheet.create({
     fontFamily: 'Cochin',
     height: 60,
   },
-  multilineChild: {
-    width: 50,
-    height: 40,
-    position: 'absolute',
-    right: 5,
-    backgroundColor: 'red',
-  },
   eventLabel: {
     margin: 3,
     fontSize: 12,
@@ -643,7 +651,7 @@ exports.examples = [
   {
     title: 'Keyboard types',
     render: function() {
-      var keyboardTypes = [
+      const keyboardTypes = [
         'default',
         'ascii-capable',
         'numbers-and-punctuation',
@@ -657,7 +665,7 @@ exports.examples = [
         'web-search',
         'numeric',
       ];
-      var examples = keyboardTypes.map(type => {
+      const examples = keyboardTypes.map(type => {
         return (
           <WithLabel key={type} label={type}>
             <TextInput keyboardType={type} style={styles.default} />
@@ -670,8 +678,8 @@ exports.examples = [
   {
     title: 'Keyboard appearance',
     render: function() {
-      var keyboardAppearance = ['default', 'light', 'dark'];
-      var examples = keyboardAppearance.map(type => {
+      const keyboardAppearance = ['default', 'light', 'dark'];
+      const examples = keyboardAppearance.map(type => {
         return (
           <WithLabel key={type} label={type}>
             <TextInput keyboardAppearance={type} style={styles.default} />
@@ -684,7 +692,7 @@ exports.examples = [
   {
     title: 'Return key types',
     render: function() {
-      var returnKeyTypes = [
+      const returnKeyTypes = [
         'default',
         'go',
         'google',
@@ -697,7 +705,7 @@ exports.examples = [
         'done',
         'emergency-call',
       ];
-      var examples = returnKeyTypes.map(type => {
+      const examples = returnKeyTypes.map(type => {
         return (
           <WithLabel key={type} label={type}>
             <TextInput returnKeyType={type} style={styles.default} />
@@ -854,7 +862,9 @@ exports.examples = [
             returnKeyType="next"
             blurOnSubmit={true}
             multiline={true}
-            onSubmitEditing={event => alert(event.nativeEvent.text)}
+            onSubmitEditing={event =>
+              Alert.alert('Alert', event.nativeEvent.text)
+            }
           />
         </View>
       );
@@ -1075,4 +1085,19 @@ exports.examples = [
       );
     },
   },
+  {
+    title: 'Text Content Type',
+    render: function() {
+      return (
+        <View>
+          <WithLabel label="emailAddress">
+            <TextInput textContentType="emailAddress" style={styles.default} />
+          </WithLabel>
+          <WithLabel label="name">
+            <TextInput textContentType="name" style={styles.default} />
+          </WithLabel>
+        </View>
+      );
+    },
+  },
 ];
diff --git a/RNTester/js/TimePickerAndroidExample.js b/RNTester/js/TimePickerAndroidExample.js
index 0daa332a8d1433..52cc76b838a22f 100644
--- a/RNTester/js/TimePickerAndroidExample.js
+++ b/RNTester/js/TimePickerAndroidExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,17 +9,17 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   TimePickerAndroid,
   StyleSheet,
   Text,
   TouchableWithoutFeedback,
 } = ReactNative;
 
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
 
 class TimePickerAndroidExample extends React.Component {
   static title = 'TimePickerAndroid';
@@ -39,7 +39,7 @@ class TimePickerAndroidExample extends React.Component {
   showPicker = async (stateKey, options) => {
     try {
       const {action, minute, hour} = await TimePickerAndroid.open(options);
-      var newState = {};
+      const newState = {};
       if (action === TimePickerAndroid.timeSetAction) {
         newState[stateKey + 'Text'] = _formatTime(hour, minute);
         newState[stateKey + 'Hour'] = hour;
@@ -112,7 +112,7 @@ function _formatTime(hour, minute) {
   return hour + ':' + (minute < 10 ? '0' + minute : minute);
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   text: {
     color: 'black',
   },
diff --git a/RNTester/js/TimerExample.js b/RNTester/js/TimerExample.js
index 66ab052bd4add2..ec768b32763148 100644
--- a/RNTester/js/TimerExample.js
+++ b/RNTester/js/TimerExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,35 +10,36 @@
 
 'use strict';
 
-var React = require('react');
-var createReactClass = require('create-react-class');
-var ReactNative = require('react-native');
-var {AlertIOS, AlertMacOS, Platform, ToastAndroid, Text, View} = ReactNative;
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-var TimerMixin = require('react-timer-mixin');
-var RNTesterButton = require('./RNTesterButton');
-/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
- * found when Flow v0.54 was deployed. To see the error delete this comment and
- * run Flow. */
-var performanceNow = require('fbjs/lib/performanceNow');
+const React = require('react');
+const ReactNative = require('react-native');
+const {AlertIOS, AlertMacOS, Platform, ToastAndroid, Text, View} = ReactNative;
+const RNTesterButton = require('./RNTesterButton');
+const performanceNow = require('fbjs/lib/performanceNow');
 
 function burnCPU(milliseconds) {
   const start = performanceNow();
   while (performanceNow() < start + milliseconds) {}
 }
 
-class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
+type RequestIdleCallbackTesterProps = $ReadOnly<{||}>;
+type RequestIdleCallbackTesterState = {|message: string|};
+
+class RequestIdleCallbackTester extends React.Component<
+  RequestIdleCallbackTesterProps,
+  RequestIdleCallbackTesterState,
+> {
   state = {
     message: '-',
   };
 
-  _idleTimer: any = null;
+  _idleTimer: ?IdleCallbackID = null;
   _iters = 0;
 
   componentWillUnmount() {
-    cancelIdleCallback(this._idleTimer);
+    if (this._idleTimer != null) {
+      cancelIdleCallback(this._idleTimer);
+      this._idleTimer = null;
+    }
   }
 
   render() {
@@ -52,7 +53,7 @@ class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
           Burn CPU inside of requestIdleCallback
         </RNTesterButton>
 
-        <RNTesterButton onPress={this._runWithTimeout.bind(this)}>
+        <RNTesterButton onPress={this._runWithTimeout}>
           Run requestIdleCallback with timeout option
         </RNTesterButton>
 
@@ -69,8 +70,12 @@ class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
     );
   }
 
-  _run = shouldBurnCPU => {
-    cancelIdleCallback(this._idleTimer);
+  _run(shouldBurnCPU: boolean) {
+    if (this._idleTimer != null) {
+      cancelIdleCallback(this._idleTimer);
+      this._idleTimer = null;
+    }
+
     this._idleTimer = requestIdleCallback(deadline => {
       let message = '';
 
@@ -82,10 +87,14 @@ class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
         message: `${message} ${deadline.timeRemaining()}ms remaining in frame`,
       });
     });
-  };
+  }
 
   _runWithTimeout = () => {
-    cancelIdleCallback(this._idleTimer);
+    if (this._idleTimer != null) {
+      cancelIdleCallback(this._idleTimer);
+      this._idleTimer = null;
+    }
+
     this._idleTimer = requestIdleCallback(
       deadline => {
         this.setState({
@@ -100,7 +109,11 @@ class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
   };
 
   _runBackground = () => {
-    cancelIdleCallback(this._idleTimer);
+    if (this._idleTimer != null) {
+      cancelIdleCallback(this._idleTimer);
+      this._idleTimer = null;
+    }
+
     const handler = deadline => {
       while (deadline.timeRemaining() > 5) {
         burnCPU(5);
@@ -117,57 +130,94 @@ class RequestIdleCallbackTester extends React.Component<{}, $FlowFixMeState> {
 
   _stopBackground = () => {
     this._iters = 0;
-    cancelIdleCallback(this._idleTimer);
+    if (this._idleTimer != null) {
+      cancelIdleCallback(this._idleTimer);
+      this._idleTimer = null;
+    }
   };
 }
 
-var TimerTester = createReactClass({
-  displayName: 'TimerTester',
-  mixins: [TimerMixin],
+type TimerTesterProps = $ReadOnly<{|
+  dt?: number,
+  type: string,
+|}>;
 
-  _ii: 0,
-  _iters: 0,
-  _start: 0,
-  _timerFn: (null: ?() => any),
-  _handle: (null: any),
+class TimerTester extends React.Component<TimerTesterProps> {
+  _ii = 0;
+  _iters = 0;
+  _start = 0;
+  _timerId: ?TimeoutID = null;
+  _rafId: ?AnimationFrameID = null;
+  _intervalId: ?IntervalID = null;
+  _immediateId: ?Object = null;
+  _timerFn: ?() => any = null;
 
-  render: function() {
-    var args = 'fn' + (this.props.dt !== undefined ? ', ' + this.props.dt : '');
+  render() {
+    const args =
+      'fn' + (this.props.dt !== undefined ? ', ' + this.props.dt : '');
     return (
       <RNTesterButton onPress={this._run}>
         Measure: {this.props.type}({args}) - {this._ii || 0}
       </RNTesterButton>
     );
-  },
+  }
 
-  _run: function() {
+  componentWillUnmount() {
+    if (this._timerId != null) {
+      clearTimeout(this._timerId);
+      this._timerId = null;
+    }
+
+    if (this._rafId != null) {
+      cancelAnimationFrame(this._rafId);
+      this._rafId = null;
+    }
+
+    if (this._immediateId != null) {
+      clearImmediate(this._immediateId);
+      this._immediateId = null;
+    }
+
+    if (this._intervalId != null) {
+      clearInterval(this._intervalId);
+      this._intervalId = null;
+    }
+  }
+
+  _run = () => {
     if (!this._start) {
-      var d = new Date();
+      const d = new Date();
       this._start = d.getTime();
       this._iters = 100;
       this._ii = 0;
       if (this.props.type === 'setTimeout') {
-        if (this.props.dt < 1) {
+        if (this.props.dt !== undefined && this.props.dt < 1) {
           this._iters = 5000;
-        } else if (this.props.dt > 20) {
+        } else if (this.props.dt !== undefined && this.props.dt > 20) {
           this._iters = 10;
         }
-        this._timerFn = () => this.setTimeout(this._run, this.props.dt);
+        this._timerFn = () => {
+          this._timerId = setTimeout(this._run, this.props.dt);
+        };
       } else if (this.props.type === 'requestAnimationFrame') {
-        this._timerFn = () => this.requestAnimationFrame(this._run);
+        this._timerFn = () => {
+          this._rafId = requestAnimationFrame(this._run);
+        };
       } else if (this.props.type === 'setImmediate') {
         this._iters = 5000;
-        this._timerFn = () => this.setImmediate(this._run);
+        this._timerFn = () => {
+          this._immediateId = setImmediate(this._run);
+        };
       } else if (this.props.type === 'setInterval') {
         this._iters = 30; // Only used for forceUpdate periodicidy
         this._timerFn = null;
-        this._handle = this.setInterval(this._run, this.props.dt);
+        this._intervalId = setInterval(this._run, this.props.dt);
       }
     }
-    if (this._ii >= this._iters && !this._handle) {
-      var d = new Date();
-      var e = d.getTime() - this._start;
-      var msg =
+    if (this._ii >= this._iters && this._intervalId == null) {
+      const d = new Date();
+      const e = d.getTime() - this._start;
+      const msg =
         'Finished ' +
         this._ii +
         ' ' +
@@ -197,25 +247,25 @@ var TimerTester = createReactClass({
     if (this._ii % (this._iters / 5) === 0) {
       this.forceUpdate();
     }
-    this._timerFn && this._timerFn();
-  },
+    if (this._timerFn) {
+      this._timerId = this._timerFn();
+    }
+  };
 
-  clear: function() {
-    this.clearInterval(this._handle); // invalid handles are ignored
-    if (this._handle) {
+  clear = () => {
+    if (this._intervalId != null) {
+      clearInterval(this._intervalId);
       // Configure things so we can do a final run to update UI and reset state.
-      this._handle = null;
+      this._intervalId = null;
       this._iters = this._ii;
       this._run();
     }
-  },
-});
+  };
+}
 
 exports.framework = 'React';
-exports.title = 'Timers, TimerMixin';
-exports.description =
-  'The TimerMixin provides timer functions for executing ' +
-  'code in the future that are safely cleaned up when the component unmounts.';
+exports.title = 'Timers';
+exports.description = 'A demonstration of Timers in React Native.';
 
 exports.examples = [
   {
@@ -272,12 +322,22 @@ exports.examples = [
     description:
       'Execute function fn every t milliseconds until cancelled ' +
       'or component is unmounted.',
-    render: function(): React.Element<any> {
-      class IntervalExample extends React.Component<{}, $FlowFixMeState> {
+    render: function() {
+      type IntervalExampleProps = $ReadOnly<{||}>;
+      type IntervalExampleState = {|
+        showTimer: boolean,
+      |};
+
+      class IntervalExample extends React.Component<
+        IntervalExampleProps,
+        IntervalExampleState,
+      > {
         state = {
           showTimer: true,
         };
 
+        _timerTester: ?React.ElementRef<typeof TimerTester>;
+
         render() {
           return (
             <View>
@@ -292,8 +352,13 @@ exports.examples = [
         _renderTimer = () => {
           return (
             <View>
-              <TimerTester ref="interval" dt={25} type="setInterval" />
-              <RNTesterButton onPress={() => this.refs.interval.clear()}>
+              <TimerTester
+                ref={ref => (this._timerTester = ref)}
+                dt={25}
+                type="setInterval"
+              />
+              <RNTesterButton
+                onPress={() => this._timerTester && this._timerTester.clear()}>
                 Clear interval
               </RNTesterButton>
             </View>
diff --git a/RNTester/js/ToastAndroidExample.android.js b/RNTester/js/ToastAndroidExample.android.js
index 80ea97715ba30b..7894ba0c3d31f6 100644
--- a/RNTester/js/ToastAndroidExample.android.js
+++ b/RNTester/js/ToastAndroidExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,12 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, ToastAndroid, TouchableWithoutFeedback} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, ToastAndroid, TouchableWithoutFeedback} = ReactNative;
 
-var RNTesterBlock = require('RNTesterBlock');
-var RNTesterPage = require('RNTesterPage');
+const RNTesterBlock = require('RNTesterBlock');
+const RNTesterPage = require('RNTesterPage');
 
 class ToastExample extends React.Component<{}, $FlowFixMeState> {
   static title = 'Toast Example';
@@ -117,7 +117,7 @@ class ToastExample extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   text: {
     color: 'black',
   },
diff --git a/RNTester/js/ToolbarAndroidExample.android.js b/RNTester/js/ToolbarAndroidExample.android.js
index 4043c054f3fbf9..84144fa5e901de 100644
--- a/RNTester/js/ToolbarAndroidExample.android.js
+++ b/RNTester/js/ToolbarAndroidExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,16 +10,16 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
+const React = require('react');
+const ReactNative = require('react-native');
 
-var nativeImageSource = require('nativeImageSource');
-var {StyleSheet, Text, View} = ReactNative;
-var RNTesterBlock = require('./RNTesterBlock');
-var RNTesterPage = require('./RNTesterPage');
+const nativeImageSource = require('nativeImageSource');
+const {StyleSheet, Text, View} = ReactNative;
+const RNTesterBlock = require('./RNTesterBlock');
+const RNTesterPage = require('./RNTesterPage');
 
-var Switch = require('Switch');
-var ToolbarAndroid = require('ToolbarAndroid');
+const Switch = require('Switch');
+const ToolbarAndroid = require('ToolbarAndroid');
 
 class ToolbarAndroidExample extends React.Component<{}, $FlowFixMeState> {
   static title = '<ToolbarAndroid>';
@@ -61,8 +61,7 @@ class ToolbarAndroidExample extends React.Component<{}, $FlowFixMeState> {
               height: 144,
             })}
             style={styles.toolbar}>
-            <View
-              style={{height: 56, flexDirection: 'row', alignItems: 'center'}}>
+            <View style={styles.switchWrapper}>
               <Switch
                 value={this.state.toolbarSwitch}
                 onValueChange={value => this.setState({toolbarSwitch: value})}
@@ -141,7 +140,7 @@ class ToolbarAndroidExample extends React.Component<{}, $FlowFixMeState> {
   };
 }
 
-var toolbarActions = [
+const toolbarActions = [
   {
     title: 'Create',
     icon: nativeImageSource({
@@ -163,11 +162,16 @@ var toolbarActions = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   toolbar: {
     backgroundColor: '#e9eaed',
     height: 56,
   },
+  switchWrapper: {
+    height: 56,
+    flexDirection: 'row',
+    alignItems: 'center',
+  },
 });
 
 module.exports = ToolbarAndroidExample;
diff --git a/RNTester/js/ToolbarAndroidExample.ios.js b/RNTester/js/ToolbarAndroidExample.ios.js
index 6ad678f53665e8..0162198954717e 100644
--- a/RNTester/js/ToolbarAndroidExample.ios.js
+++ b/RNTester/js/ToolbarAndroidExample.ios.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/TouchableExample.js b/RNTester/js/TouchableExample.js
index c5ddb64fafbe41..6302b75ecf0ec6 100644
--- a/RNTester/js/TouchableExample.js
+++ b/RNTester/js/TouchableExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   Animated,
   Image,
   StyleSheet,
@@ -21,6 +21,7 @@ var {
   TouchableOpacity,
   Platform,
   TouchableNativeFeedback,
+  TouchableWithoutFeedback,
   View,
 } = ReactNative;
 
@@ -44,30 +45,13 @@ exports.examples = [
       'background color change as well with the activeOpacity and ' +
       'underlayColor props.',
     render: function() {
-      return (
-        <View>
-          <View style={styles.row}>
-            <TouchableHighlight
-              style={styles.wrapper}
-              onPress={() => console.log('stock THW image - highlight')}>
-              <Image source={heartImage} style={styles.image} />
-            </TouchableHighlight>
-            <TouchableHighlight
-              style={styles.wrapper}
-              activeOpacity={1}
-              tvParallaxProperties={{
-                pressMagnification: 1.3,
-                pressDuration: 0.6,
-              }}
-              underlayColor="rgb(210, 230, 255)"
-              onPress={() => console.log('custom THW text - highlight')}>
-              <View style={styles.wrapperCustom}>
-                <Text style={styles.text}>Tap Here For Custom Highlight!</Text>
-              </View>
-            </TouchableHighlight>
-          </View>
-        </View>
-      );
+      return <TouchableHighlightBox />;
+    },
+  },
+  {
+    title: '<TouchableWithoutFeedback>',
+    render: function() {
+      return <TouchableWithoutFeedbackBox />;
     },
   },
   {
@@ -171,6 +155,93 @@ exports.examples = [
   }, // ]TODO(macOS ISS#2323203)
 ];
 
+class TouchableHighlightBox extends React.Component<{}, $FlowFixMeState> {
+  state = {
+    timesPressed: 0,
+  };
+
+  touchableOnPress = () => {
+    this.setState({
+      timesPressed: this.state.timesPressed + 1,
+    });
+  };
+
+  render() {
+    let textLog = '';
+    if (this.state.timesPressed > 1) {
+      textLog = this.state.timesPressed + 'x TouchableHighlight onPress';
+    } else if (this.state.timesPressed > 0) {
+      textLog = 'TouchableHighlight onPress';
+    }
+
+    return (
+      <View>
+        <View style={styles.row}>
+          <TouchableHighlight
+            style={styles.wrapper}
+            testID="touchable_highlight_image_button"
+            onPress={this.touchableOnPress}>
+            <Image source={heartImage} style={styles.image} />
+          </TouchableHighlight>
+          <TouchableHighlight
+            style={styles.wrapper}
+            testID="touchable_highlight_text_button"
+            activeOpacity={1}
+            tvParallaxProperties={{
+              pressMagnification: 1.3,
+              pressDuration: 0.6,
+            }}
+            underlayColor="rgb(210, 230, 255)"
+            onPress={this.touchableOnPress}>
+            <View style={styles.wrapperCustom}>
+              <Text style={styles.text}>Tap Here For Custom Highlight!</Text>
+            </View>
+          </TouchableHighlight>
+        </View>
+        <View style={styles.logBox}>
+          <Text testID="touchable_highlight_console">{textLog}</Text>
+        </View>
+      </View>
+    );
+  }
+}
+
+class TouchableWithoutFeedbackBox extends React.Component<{}, $FlowFixMeState> {
+  state = {
+    timesPressed: 0,
+  };
+
+  textOnPress = () => {
+    this.setState({
+      timesPressed: this.state.timesPressed + 1,
+    });
+  };
+
+  render() {
+    let textLog = '';
+    if (this.state.timesPressed > 1) {
+      textLog = this.state.timesPressed + 'x TouchableWithoutFeedback onPress';
+    } else if (this.state.timesPressed > 0) {
+      textLog = 'TouchableWithoutFeedback onPress';
+    }
+
+    return (
+      <View>
+        <TouchableWithoutFeedback
+          onPress={this.textOnPress}
+          testID="touchable_without_feedback_button">
+          <View style={styles.wrapperCustom}>
+            <Text style={styles.text}>Tap Here For No Feedback!</Text>
+          </View>
+        </TouchableWithoutFeedback>
+        <View style={styles.logBox}>
+          <Text testID="touchable_without_feedback_console">{textLog}</Text>
+        </View>
+      </View>
+    );
+  }
+}
+
 class TextOnPressBox extends React.Component<{}, $FlowFixMeState> {
   state = {
     timesPressed: 0,
@@ -183,7 +254,7 @@ class TextOnPressBox extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var textLog = '';
+    let textLog = '';
     if (this.state.timesPressed > 1) {
       textLog = this.state.timesPressed + 'x text onPress';
     } else if (this.state.timesPressed > 0) {
@@ -192,11 +263,14 @@ class TextOnPressBox extends React.Component<{}, $FlowFixMeState> {
 
     return (
       <View>
-        <Text style={styles.textBlock} onPress={this.textOnPress}>
+        <Text
+          style={styles.textBlock}
+          testID="tappable_text"
+          onPress={this.textOnPress}>
           Text has built-in onPress handling
         </Text>
         <View style={styles.logBox}>
-          <Text>{textLog}</Text>
+          <Text testID="tappable_text_console">{textLog}</Text>
         </View>
       </View>
     );
@@ -211,7 +285,7 @@ class TouchableFeedbackEvents extends React.Component<{}, $FlowFixMeState> {
   render() {
     return (
       <View testID="touchable_feedback_events">
-        <View style={[styles.row, {justifyContent: 'center'}]}>
+        <View style={[styles.row, styles.centered]}>
           <TouchableOpacity
             style={styles.wrapper}
             testID="touchable_feedback_events_button"
@@ -234,8 +308,8 @@ class TouchableFeedbackEvents extends React.Component<{}, $FlowFixMeState> {
   }
 
   _appendEvent = eventName => {
-    var limit = 6;
-    var eventLog = this.state.eventLog.slice(0, limit - 1);
+    const limit = 6;
+    const eventLog = this.state.eventLog.slice(0, limit - 1);
     eventLog.unshift(eventName);
     this.setState({eventLog});
   };
@@ -249,7 +323,7 @@ class TouchableDelayEvents extends React.Component<{}, $FlowFixMeState> {
   render() {
     return (
       <View testID="touchable_delay_events">
-        <View style={[styles.row, {justifyContent: 'center'}]}>
+        <View style={[styles.row, styles.centered]}>
           <TouchableOpacity
             style={styles.wrapper}
             testID="touchable_delay_events_button"
@@ -273,8 +347,8 @@ class TouchableDelayEvents extends React.Component<{}, $FlowFixMeState> {
   }
 
   _appendEvent = eventName => {
-    var limit = 6;
-    var eventLog = this.state.eventLog.slice(0, limit - 1);
+    const limit = 6;
+    const eventLog = this.state.eventLog.slice(0, limit - 1);
     eventLog.unshift(eventName);
     this.setState({eventLog});
   };
@@ -297,7 +371,7 @@ class ForceTouchExample extends React.Component<{}, $FlowFixMeState> {
         <View style={styles.forceTouchBox} testID="touchable_3dtouch_output">
           <Text>{this._renderConsoleText()}</Text>
         </View>
-        <View style={[styles.row, {justifyContent: 'center'}]}>
+        <View style={[styles.row, styles.centered]}>
           <View
             style={styles.wrapper}
             testID="touchable_3dtouch_button"
@@ -326,7 +400,7 @@ class TouchableHitSlop extends React.Component<{}, $FlowFixMeState> {
   };
 
   render() {
-    var log = '';
+    let log = '';
     if (this.state.timesPressed > 1) {
       log = this.state.timesPressed + 'x onPress';
     } else if (this.state.timesPressed > 0) {
@@ -335,7 +409,7 @@ class TouchableHitSlop extends React.Component<{}, $FlowFixMeState> {
 
     return (
       <View testID="touchable_hit_slop">
-        <View style={[styles.row, {justifyContent: 'center'}]}>
+        <View style={[styles.row, styles.centered]}>
           <TouchableOpacity
             onPress={this.onPress}
             style={styles.hitSlopWrapper}
@@ -381,6 +455,31 @@ class TouchableDisabled extends React.Component<{}> {
           <Text style={styles.button}>Enabled TouchableHighlight</Text>
         </TouchableHighlight>
 
+        <TouchableWithoutFeedback
+          onPress={() => console.log('TWOF has been clicked')}
+          disabled={true}>
+          <View style={styles.wrapperCustom}>
+            <Text
+              style={[
+                styles.button,
+                styles.nativeFeedbackButton,
+                styles.disabledButton,
+              ]}>
+              Disabled TouchableWithoutFeedback
+            </Text>
+          </View>
+        </TouchableWithoutFeedback>
+
+        <TouchableWithoutFeedback
+          onPress={() => console.log('TWOF has been clicked')}
+          disabled={false}>
+          <View style={styles.wrapperCustom}>
+            <Text style={[styles.button, styles.nativeFeedbackButton]}>
+              Enabled TouchableWithoutFeedback
+            </Text>
+          </View>
+        </TouchableWithoutFeedback>
+
         {Platform.OS === 'android' && (
           <TouchableNativeFeedback
             style={[styles.row, styles.block]}
@@ -512,16 +611,17 @@ class TouchableMouseEvents extends React.Component<{}, $FlowFixMeState> {
 }
 // ]TODO(macOS ISS#2323203)
 
-var heartImage = {uri: 'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small'};
+const heartImage = {
+  uri: 'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small',
+};
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   row: {
     justifyContent: 'center',
     flexDirection: 'row',
   },
-  icon: {
-    width: 24,
-    height: 24,
+  centered: {
+    justifyContent: 'center',
   },
   image: {
     width: 50,
diff --git a/RNTester/js/TransformExample.js b/RNTester/js/TransformExample.js
index 8af5fc55d2824c..32a1c7f9fe749e 100644
--- a/RNTester/js/TransformExample.js
+++ b/RNTester/js/TransformExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Animated, StyleSheet, Text, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Animated, StyleSheet, Text, View} = ReactNative;
 
 class Flip extends React.Component<{}, $FlowFixMeState> {
   state = {
@@ -54,10 +54,8 @@ class Flip extends React.Component<{}, $FlowFixMeState> {
         <Animated.View
           style={[
             styles.flipCard,
+            styles.flipCard1,
             {
-              position: 'absolute',
-              top: 0,
-              backgroundColor: 'red',
               transform: [
                 {perspective: 850},
                 {
@@ -76,7 +74,7 @@ class Flip extends React.Component<{}, $FlowFixMeState> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     height: 500,
   },
@@ -178,6 +176,11 @@ var styles = StyleSheet.create({
     backgroundColor: 'blue',
     backfaceVisibility: 'hidden',
   },
+  flipCard1: {
+    position: 'absolute',
+    top: 0,
+    backgroundColor: 'red',
+  },
   flipText: {
     width: 90,
     fontSize: 20,
diff --git a/RNTester/js/TransparentHitTestExample.js b/RNTester/js/TransparentHitTestExample.js
index 7ba595bee16e4d..908183bf56fdae 100644
--- a/RNTester/js/TransparentHitTestExample.js
+++ b/RNTester/js/TransparentHitTestExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,15 +10,15 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {Text, View, TouchableOpacity} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {Text, View, TouchableOpacity, Alert} = ReactNative;
 
 class TransparentHitTestExample extends React.Component<{}> {
   render() {
     return (
       <View style={{flex: 1}}>
-        <TouchableOpacity onPress={() => alert('Hi!')}>
+        <TouchableOpacity onPress={() => Alert.alert('Alert', 'Hi!')}>
           <Text>HELLO!</Text>
         </TouchableOpacity>
 
diff --git a/RNTester/js/URIActionMap.js b/RNTester/js/URIActionMap.js
index cf33d010434699..3dba73d27bf8ca 100644
--- a/RNTester/js/URIActionMap.js
+++ b/RNTester/js/URIActionMap.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/VibrationExample.js b/RNTester/js/VibrationExample.js
index c4760d78130b3e..32f2b2f5f1c7c6 100644
--- a/RNTester/js/VibrationExample.js
+++ b/RNTester/js/VibrationExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   StyleSheet,
   View,
   Text,
@@ -25,7 +25,7 @@ exports.framework = 'React';
 exports.title = 'Vibration';
 exports.description = 'Vibration API';
 
-var pattern, patternLiteral, patternDescription;
+let pattern, patternLiteral, patternDescription;
 if (Platform.OS === 'android') {
   pattern = [0, 500, 200, 500];
   patternLiteral = '[0, 500, 200, 500]';
@@ -115,7 +115,7 @@ exports.examples = [
   },
 ];
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/ViewExample.js b/RNTester/js/ViewExample.js
index 34ce59baf638ad..9bbea072cc3a84 100644
--- a/RNTester/js/ViewExample.js
+++ b/RNTester/js/ViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -186,21 +186,33 @@ exports.examples = [
             <TouchableWithoutFeedback onPress={this._handlePress}>
               <View>
                 <View
-                  style={{
-                    borderWidth: 1,
-                    borderStyle: this.state.showBorder ? 'dashed' : null,
-                    padding: 5,
-                  }}>
+                  style={[
+                    {
+                      borderWidth: 1,
+                      padding: 5,
+                    },
+                    this.state.showBorder
+                      ? {
+                          borderStyle: 'dashed',
+                        }
+                      : null,
+                  ]}>
                   <Text style={{fontSize: 11}}>Dashed border style</Text>
                 </View>
                 <View
-                  style={{
-                    marginTop: 5,
-                    borderWidth: 1,
-                    borderRadius: 5,
-                    borderStyle: this.state.showBorder ? 'dotted' : null,
-                    padding: 5,
-                  }}>
+                  style={[
+                    {
+                      marginTop: 5,
+                      borderWidth: 1,
+                      borderRadius: 5,
+                      padding: 5,
+                    },
+                    this.state.showBorder
+                      ? {
+                          borderStyle: 'dotted',
+                        }
+                      : null,
+                  ]}>
                   <Text style={{fontSize: 11}}>Dotted border style</Text>
                 </View>
               </View>
@@ -404,4 +416,72 @@ exports.examples = [
       return <ZIndexExample />;
     },
   },
+  {
+    title: 'BackfaceVisibility',
+    render: function() {
+      return (
+        <>
+          <Text style={{paddingBottom: 10}}>
+            View #1, front is visible, back is hidden.
+          </Text>
+          <View style={{justifyContent: 'center', alignItems: 'center'}}>
+            <View
+              style={{
+                height: 200,
+                width: 200,
+                justifyContent: 'center',
+                alignItems: 'center',
+                backgroundColor: 'blue',
+                backfaceVisibility: 'hidden',
+              }}>
+              <Text>Front</Text>
+            </View>
+            <View
+              style={{
+                height: 200,
+                width: 200,
+                justifyContent: 'center',
+                alignItems: 'center',
+                backgroundColor: 'red',
+                backfaceVisibility: 'hidden',
+                transform: [{rotateY: '180deg'}],
+                position: 'absolute',
+                top: 0,
+              }}>
+              <Text>Back (You should not see this)</Text>
+            </View>
+          </View>
+          <Text style={{paddingVertical: 10}}>
+            View #2, front is hidden, back is visible.
+          </Text>
+          <View style={{justifyContent: 'center', alignItems: 'center'}}>
+            <View
+              style={{
+                height: 200,
+                width: 200,
+                justifyContent: 'center',
+                alignItems: 'center',
+                backgroundColor: 'blue',
+                backfaceVisibility: 'hidden',
+              }}>
+              <Text>Front (You should not see this)</Text>
+            </View>
+            <View
+              style={{
+                height: 200,
+                width: 200,
+                justifyContent: 'center',
+                alignItems: 'center',
+                backgroundColor: 'red',
+                backfaceVisibility: 'hidden',
+                position: 'absolute',
+                top: 0,
+              }}>
+              <Text>Back</Text>
+            </View>
+          </View>
+        </>
+      );
+    },
+  },
 ];
diff --git a/RNTester/js/ViewPagerAndroidExample.android.js b/RNTester/js/ViewPagerAndroidExample.android.js
index f4aaca4a098411..e904661607264c 100644
--- a/RNTester/js/ViewPagerAndroidExample.android.js
+++ b/RNTester/js/ViewPagerAndroidExample.android.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   Image,
   StyleSheet,
   Text,
@@ -23,9 +23,9 @@ var {
 
 import type {ViewPagerScrollState} from 'ViewPagerAndroid';
 
-var PAGES = 5;
-var BGCOLOR = ['#fdc08e', '#fff6b9', '#99d1b7', '#dde5fe', '#f79273'];
-var IMAGE_URIS = [
+const PAGES = 5;
+const BGCOLOR = ['#fdc08e', '#fff6b9', '#99d1b7', '#dde5fe', '#f79273'];
+const IMAGE_URIS = [
   'https://apod.nasa.gov/apod/image/1410/20141008tleBaldridge001h990.jpg',
   'https://apod.nasa.gov/apod/image/1409/volcanicpillar_vetter_960.jpg',
   'https://apod.nasa.gov/apod/image/1409/m27_snyder_960.jpg',
@@ -43,7 +43,7 @@ class LikeCount extends React.Component {
   };
 
   render() {
-    var thumbsUp = '\uD83D\uDC4D';
+    const thumbsUp = '\uD83D\uDC4D';
     return (
       <View style={styles.likeContainer}>
         <TouchableOpacity onPress={this.onClick} style={styles.likeButton}>
@@ -79,9 +79,10 @@ class Button extends React.Component {
 
 class ProgressBar extends React.Component {
   render() {
-    var fractionalPosition =
+    const fractionalPosition =
       this.props.progress.position + this.props.progress.offset;
-    var progressBarSize = (fractionalPosition / (PAGES - 1)) * this.props.size;
+    const progressBarSize =
+      (fractionalPosition / (PAGES - 1)) * this.props.size;
     return (
       <View style={[styles.progressBarContainer, {width: this.props.size}]}>
         <View style={[styles.progressBar, {width: progressBarSize}]} />
@@ -118,7 +119,7 @@ class ViewPagerAndroidExample extends React.Component {
   };
 
   move = delta => {
-    var page = this.state.page + delta;
+    const page = this.state.page + delta;
     this.go(page);
   };
 
@@ -133,9 +134,9 @@ class ViewPagerAndroidExample extends React.Component {
   };
 
   render() {
-    var pages = [];
-    for (var i = 0; i < PAGES; i++) {
-      var pageStyle = {
+    const pages = [];
+    for (let i = 0; i < PAGES; i++) {
+      const pageStyle = {
         backgroundColor: BGCOLOR[i % BGCOLOR.length],
         alignItems: 'center',
         padding: 20,
@@ -150,7 +151,7 @@ class ViewPagerAndroidExample extends React.Component {
         </View>,
       );
     }
-    var {page, animationsAreEnabled} = this.state;
+    const {page, animationsAreEnabled} = this.state;
     return (
       <View style={styles.container}>
         <ViewPagerAndroid
@@ -222,7 +223,7 @@ class ViewPagerAndroidExample extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   buttons: {
     flexDirection: 'row',
     height: 30,
diff --git a/RNTester/js/WebSocketExample.js b/RNTester/js/WebSocketExample.js
index b1cffe3e5dc6d4..fdb35ca69adbe6 100644
--- a/RNTester/js/WebSocketExample.js
+++ b/RNTester/js/WebSocketExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/WebViewExample.js b/RNTester/js/WebViewExample.js
index fdb0abb61d49d0..f973d816210ff2 100644
--- a/RNTester/js/WebViewExample.js
+++ b/RNTester/js/WebViewExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {
+const React = require('react');
+const ReactNative = require('react-native');
+const {
   StyleSheet,
   Text,
   TextInput,
@@ -22,13 +22,13 @@ var {
   WebView,
 } = ReactNative;
 
-var HEADER = '#3b5998';
-var BGWASH = 'rgba(255,255,255,0.8)';
-var DISABLED_WASH = 'rgba(255,255,255,0.25)';
+const HEADER = '#3b5998';
+const BGWASH = 'rgba(255,255,255,0.8)';
+const DISABLED_WASH = 'rgba(255,255,255,0.25)';
 
-var TEXT_INPUT_REF = 'urlInput';
-var WEBVIEW_REF = 'webview';
-var DEFAULT_URL = 'https://m.facebook.com';
+const TEXT_INPUT_REF = 'urlInput';
+const WEBVIEW_REF = 'webview';
+const DEFAULT_URL = 'https://m.facebook.com';
 const FILE_SYSTEM_ORIGIN_WHITE_LIST = ['file://*', 'http://*', 'https://*'];
 
 class WebViewExample extends React.Component<{}, $FlowFixMeState> {
@@ -44,7 +44,7 @@ class WebViewExample extends React.Component<{}, $FlowFixMeState> {
   inputText = '';
 
   handleTextInputChange = event => {
-    var url = event.nativeEvent.text;
+    let url = event.nativeEvent.text;
     if (!/^[a-zA-Z-_]+:/.test(url)) {
       url = 'http://' + url;
     }
@@ -143,7 +143,7 @@ class WebViewExample extends React.Component<{}, $FlowFixMeState> {
   };
 
   pressGoButton = () => {
-    var url = this.inputText.toLowerCase();
+    const url = this.inputText.toLowerCase();
     if (url === this.state.url) {
       this.reload();
     } else {
@@ -297,7 +297,7 @@ class InjectJS extends React.Component<{}> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     backgroundColor: HEADER,
@@ -362,10 +362,6 @@ var styles = StyleSheet.create({
     color: 'white',
     fontSize: 13,
   },
-  spinner: {
-    width: 20,
-    marginRight: 6,
-  },
   buttons: {
     flexDirection: 'row',
     height: 30,
@@ -436,6 +432,7 @@ exports.examples = [
             backgroundColor: BGWASH,
             height: 100,
           }}
+          allowFileAccess={true}
           originWhitelist={FILE_SYSTEM_ORIGIN_WHITE_LIST}
           source={require('./helloworld.html')}
           scalesPageToFit={true}
diff --git a/RNTester/js/XHRExample.js b/RNTester/js/XHRExample.js
index 5cec37c1debca8..789a08a80ac3e4 100644
--- a/RNTester/js/XHRExample.js
+++ b/RNTester/js/XHRExample.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,15 +10,15 @@
 
 'use strict';
 
-var React = require('react');
+const React = require('react');
 
-var XHRExampleDownload = require('./XHRExampleDownload');
-var XHRExampleBinaryUpload = require('./XHRExampleBinaryUpload');
-var XHRExampleFormData = require('./XHRExampleFormData');
-var XHRExampleHeaders = require('./XHRExampleHeaders');
-var XHRExampleFetch = require('./XHRExampleFetch');
-var XHRExampleOnTimeOut = require('./XHRExampleOnTimeOut');
-var XHRExampleCookies = require('./XHRExampleCookies');
+const XHRExampleDownload = require('./XHRExampleDownload');
+const XHRExampleBinaryUpload = require('./XHRExampleBinaryUpload');
+const XHRExampleFormData = require('./XHRExampleFormData');
+const XHRExampleHeaders = require('./XHRExampleHeaders');
+const XHRExampleFetch = require('./XHRExampleFetch');
+const XHRExampleOnTimeOut = require('./XHRExampleOnTimeOut');
+const XHRExampleCookies = require('./XHRExampleCookies');
 
 exports.framework = 'React';
 exports.title = 'XMLHttpRequest';
diff --git a/RNTester/js/XHRExampleBinaryUpload.js b/RNTester/js/XHRExampleBinaryUpload.js
index 211c2f3ca1707d..dd896b5750e2ed 100644
--- a/RNTester/js/XHRExampleBinaryUpload.js
+++ b/RNTester/js/XHRExampleBinaryUpload.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -62,12 +62,12 @@ class XHRExampleBinaryUpload extends React.Component<{}, $FlowFixMeState> {
       Alert.alert('Upload failed', 'No response payload.');
       return;
     }
-    var index = xhr.responseText.indexOf('http://www.posttestserver.com/');
+    const index = xhr.responseText.indexOf('http://www.posttestserver.com/');
     if (index === -1) {
       Alert.alert('Upload failed', 'Invalid response payload.');
       return;
     }
-    var url = xhr.responseText.slice(index).split('\n')[0];
+    const url = xhr.responseText.slice(index).split('\n')[0];
     console.log('Upload successful: ' + url);
     Linking.openURL(url);
   }
@@ -77,7 +77,7 @@ class XHRExampleBinaryUpload extends React.Component<{}, $FlowFixMeState> {
   };
 
   _upload = () => {
-    var xhr = new XMLHttpRequest();
+    const xhr = new XMLHttpRequest();
     xhr.open('POST', 'http://posttestserver.com/post.php');
     xhr.onload = () => XHRExampleBinaryUpload.handlePostTestServerUpload(xhr);
     xhr.setRequestHeader('Content-Type', 'text/plain');
diff --git a/RNTester/js/XHRExampleCookies.js b/RNTester/js/XHRExampleCookies.js
index 6008e7a1a3c220..0d835f3901c747 100644
--- a/RNTester/js/XHRExampleCookies.js
+++ b/RNTester/js/XHRExampleCookies.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,11 +10,11 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, TouchableHighlight, View, WebView} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, TouchableHighlight, View, WebView} = ReactNative;
 
-var RCTNetworking = require('RCTNetworking');
+const RCTNetworking = require('RCTNetworking');
 
 class XHRExampleCookies extends React.Component<any, any> {
   cancelled: boolean;
@@ -30,8 +30,8 @@ class XHRExampleCookies extends React.Component<any, any> {
   }
 
   setCookie(domain: string) {
-    var {a, b} = this.state;
-    var url = `https://${domain}/cookies/set?a=${a}&b=${b}`;
+    const {a, b} = this.state;
+    const url = `https://${domain}/cookies/set?a=${a}&b=${b}`;
     fetch(url).then(response => {
       this.setStatus(`Cookies a=${a}, b=${b} set`);
       this.refreshWebview();
@@ -130,7 +130,7 @@ class XHRExampleCookies extends React.Component<any, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/XHRExampleDownload.js b/RNTester/js/XHRExampleDownload.js
index 3cc4b34c5bc011..4adac0d125493c 100644
--- a/RNTester/js/XHRExampleDownload.js
+++ b/RNTester/js/XHRExampleDownload.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/XHRExampleFetch.js b/RNTester/js/XHRExampleFetch.js
index 72f1f7e43b11df..1377f18c34a58d 100644
--- a/RNTester/js/XHRExampleFetch.js
+++ b/RNTester/js/XHRExampleFetch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, TextInput, View, Platform} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, TextInput, View, Platform} = ReactNative;
 
 class XHRExampleFetch extends React.Component<any, any> {
   responseURL: ?string;
@@ -27,7 +27,7 @@ class XHRExampleFetch extends React.Component<any, any> {
     this.responseHeaders = null;
   }
 
-  submit(uri: String) {
+  submit(uri: string) {
     fetch(uri)
       .then(response => {
         this.responseURL = response.url;
@@ -44,11 +44,11 @@ class XHRExampleFetch extends React.Component<any, any> {
       return null;
     }
 
-    var responseHeaders = [];
-    var keys = Object.keys(this.responseHeaders.map);
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
-      var value = this.responseHeaders.get(key);
+    const responseHeaders = [];
+    const keys = Object.keys(this.responseHeaders.map);
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i];
+      const value = this.responseHeaders.get(key);
       responseHeaders.push(
         <Text>
           {key}: {value}
@@ -59,21 +59,21 @@ class XHRExampleFetch extends React.Component<any, any> {
   }
 
   render() {
-    var responseURL = this.responseURL ? (
+    const responseURL = this.responseURL ? (
       <View style={{marginTop: 10}}>
         <Text style={styles.label}>Server response URL:</Text>
         <Text>{this.responseURL}</Text>
       </View>
     ) : null;
 
-    var responseHeaders = this.responseHeaders ? (
+    const responseHeaders = this.responseHeaders ? (
       <View style={{marginTop: 10}}>
         <Text style={styles.label}>Server response headers:</Text>
         {this._renderHeaders()}
       </View>
     ) : null;
 
-    var response = this.state.responseText ? (
+    const response = this.state.responseText ? (
       <View style={{marginTop: 10}}>
         <Text style={styles.label}>Server response:</Text>
         <TextInput
@@ -104,7 +104,7 @@ class XHRExampleFetch extends React.Component<any, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   textInput: {
     flex: 1,
     borderRadius: 3,
diff --git a/RNTester/js/XHRExampleFormData.js b/RNTester/js/XHRExampleFormData.js
index bc2e43b0762885..1b26a08a1bb7f0 100644
--- a/RNTester/js/XHRExampleFormData.js
+++ b/RNTester/js/XHRExampleFormData.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,11 +13,9 @@
 const React = require('react');
 const ReactNative = require('react-native');
 const {
-  Alert,
   CameraRoll,
   Image,
   ImageEditor,
-  Linking,
   Platform,
   StyleSheet,
   Text,
@@ -54,9 +52,9 @@ class XHRExampleFormData extends React.Component<Object, Object> {
       if (!this._isMounted) {
         return;
       }
-      var edges = data.edges;
-      var edge = edges[Math.floor(Math.random() * edges.length)];
-      var randomPhoto = edge && edge.node && edge.node.image;
+      const edges = data.edges;
+      const edge = edges[Math.floor(Math.random() * edges.length)];
+      const randomPhoto = edge && edge.node && edge.node.image;
       if (randomPhoto) {
         let {width, height} = randomPhoto;
         width *= 0.25;
@@ -72,31 +70,31 @@ class XHRExampleFormData extends React.Component<Object, Object> {
   };
 
   _addTextParam = () => {
-    var textParams = this.state.textParams;
+    const textParams = this.state.textParams;
     textParams.push({name: '', value: ''});
     this.setState({textParams});
   };
 
   _onTextParamNameChange(index, text) {
-    var textParams = this.state.textParams;
+    const textParams = this.state.textParams;
     textParams[index].name = text;
     this.setState({textParams});
   }
 
   _onTextParamValueChange(index, text) {
-    var textParams = this.state.textParams;
+    const textParams = this.state.textParams;
     textParams[index].value = text;
     this.setState({textParams});
   }
 
   _upload = () => {
-    var xhr = new XMLHttpRequest();
+    const xhr = new XMLHttpRequest();
     xhr.open('POST', 'http://posttestserver.com/post.php');
     xhr.onload = () => {
       this.setState({isUploading: false});
       XHRExampleBinaryUpload.handlePostTestServerUpload(xhr);
     };
-    var formdata = new FormData();
+    const formdata = new FormData();
     if (this.state.randomPhoto) {
       formdata.append('image', {
         ...this.state.randomPhoto,
@@ -118,13 +116,13 @@ class XHRExampleFormData extends React.Component<Object, Object> {
   };
 
   render() {
-    var image = null;
+    let image = null;
     if (this.state.randomPhoto) {
       image = (
         <Image source={this.state.randomPhoto} style={styles.randomPhoto} />
       );
     }
-    var textItems = this.state.textParams.map((item, index) => (
+    const textItems = this.state.textParams.map((item, index) => (
       <View style={styles.paramRow}>
         <TextInput
           autoCapitalize="none"
@@ -143,12 +141,12 @@ class XHRExampleFormData extends React.Component<Object, Object> {
         />
       </View>
     ));
-    var uploadButtonLabel = this.state.isUploading ? 'Uploading...' : 'Upload';
-    var uploadProgress = this.state.uploadProgress;
+    let uploadButtonLabel = this.state.isUploading ? 'Uploading...' : 'Upload';
+    const uploadProgress = this.state.uploadProgress;
     if (uploadProgress !== null) {
       uploadButtonLabel += ' ' + Math.round(uploadProgress * 100) + '%';
     }
-    var uploadButton = (
+    let uploadButton = (
       <View style={styles.uploadButtonBox}>
         <Text style={styles.uploadButtonLabel}>{uploadButtonLabel}</Text>
       </View>
diff --git a/RNTester/js/XHRExampleHeaders.js b/RNTester/js/XHRExampleHeaders.js
index 6fb4e28dbf03be..074df010b00d42 100644
--- a/RNTester/js/XHRExampleHeaders.js
+++ b/RNTester/js/XHRExampleHeaders.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, TouchableHighlight, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, TouchableHighlight, View} = ReactNative;
 
 class XHRExampleHeaders extends React.Component {
   xhr: XMLHttpRequest;
@@ -32,7 +32,7 @@ class XHRExampleHeaders extends React.Component {
   download() {
     this.xhr && this.xhr.abort();
 
-    var xhr = this.xhr || new XMLHttpRequest();
+    const xhr = this.xhr || new XMLHttpRequest();
     xhr.onreadystatechange = () => {
       if (xhr.readyState === xhr.DONE) {
         if (this.cancelled) {
@@ -75,7 +75,7 @@ class XHRExampleHeaders extends React.Component {
   }
 
   render() {
-    var button =
+    const button =
       this.state.status === 'Downloading...' ? (
         <View style={styles.wrapper}>
           <View style={styles.button}>
@@ -101,7 +101,7 @@ class XHRExampleHeaders extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/XHRExampleOnTimeOut.js b/RNTester/js/XHRExampleOnTimeOut.js
index 57a918b53c10ec..095dd3631356b4 100644
--- a/RNTester/js/XHRExampleOnTimeOut.js
+++ b/RNTester/js/XHRExampleOnTimeOut.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,9 +10,9 @@
 
 'use strict';
 
-var React = require('react');
-var ReactNative = require('react-native');
-var {StyleSheet, Text, TouchableHighlight, View} = ReactNative;
+const React = require('react');
+const ReactNative = require('react-native');
+const {StyleSheet, Text, TouchableHighlight, View} = ReactNative;
 
 class XHRExampleOnTimeOut extends React.Component<any, any> {
   xhr: XMLHttpRequest;
@@ -28,7 +28,7 @@ class XHRExampleOnTimeOut extends React.Component<any, any> {
   loadTimeOutRequest() {
     this.xhr && this.xhr.abort();
 
-    var xhr = this.xhr || new XMLHttpRequest();
+    const xhr = this.xhr || new XMLHttpRequest();
 
     xhr.onerror = () => {
       console.log('Status ', xhr.status);
@@ -60,7 +60,7 @@ class XHRExampleOnTimeOut extends React.Component<any, any> {
   }
 
   render() {
-    var button = this.state.loading ? (
+    const button = this.state.loading ? (
       <View style={styles.wrapper}>
         <View style={styles.button}>
           <Text>Loading...</Text>
@@ -85,7 +85,7 @@ class XHRExampleOnTimeOut extends React.Component<any, any> {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   wrapper: {
     borderRadius: 5,
     marginBottom: 5,
diff --git a/RNTester/js/createExamplePage.js b/RNTester/js/createExamplePage.js
index eba5a495287c2f..271057c3fb66a0 100644
--- a/RNTester/js/createExamplePage.js
+++ b/RNTester/js/createExamplePage.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,7 +16,7 @@ const RNTesterExampleContainer = require('./RNTesterExampleContainer');
 
 import type {ExampleModule} from 'ExampleTypes';
 
-var createExamplePage = function(
+const createExamplePage = function(
   title: ?string,
   exampleModule: ExampleModule,
 ): React.ComponentType<any> {
diff --git a/RNTester/js/http_test_server.js b/RNTester/js/http_test_server.js
index c9a4be5753948a..bd25e24cd8bc70 100755
--- a/RNTester/js/http_test_server.js
+++ b/RNTester/js/http_test_server.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/RNTester/js/websocket_test_server.js b/RNTester/js/websocket_test_server.js
index eacab9e219775f..19e3a43167d6ef 100755
--- a/RNTester/js/websocket_test_server.js
+++ b/RNTester/js/websocket_test_server.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -35,7 +35,7 @@ server.on('connection', ws => {
     console.log('Received message:', message);
     console.log('Cookie:', ws.upgradeReq.headers.cookie);
     if (respondWithBinary) {
-      message = new Buffer(message);
+      message = Buffer.from(message);
     }
     if (message === 'getImage') {
       message = fs.readFileSync(path.resolve(__dirname, 'flux@3x.png'));
diff --git a/React.podspec b/React.podspec
index 946d461b20c92a..a5d06285fff740 100644
--- a/React.podspec
+++ b/React.podspec
@@ -1,4 +1,9 @@
 # coding: utf-8
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 require "json"
 
 package = JSON.parse(File.read(File.join(__dir__, "package.json")))
@@ -13,7 +18,7 @@ else
 end
 
 folly_compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1'
-folly_version = '2016.10.31.00'
+folly_version = '2018.10.22.00'
 
 Pod::Spec.new do |s|
   s.name                    = "React"
@@ -71,6 +76,7 @@ Pod::Spec.new do |s|
     ss.dependency             "Folly", folly_version
     ss.dependency             "React/Core"
     ss.dependency             "React/cxxreact"
+    ss.dependency             "React/jsiexecutor"
     ss.compiler_flags       = folly_compiler_flags
     ss.private_header_files = "React/Cxx*/*.h"
     ss.source_files         = "React/Cxx*/*.{h,m,mm}"
@@ -100,19 +106,29 @@ Pod::Spec.new do |s|
     ss.source_files         = "React/**/RCTTV*.{h,m}"
   end
 
-  s.subspec "jschelpers" do |ss|
+  s.subspec "jsinspector" do |ss|
+    ss.source_files         = "ReactCommon/jsinspector/*.{cpp,h}"
+    ss.private_header_files = "ReactCommon/jsinspector/*.h"
+    ss.pod_target_xcconfig  = { "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/ReactCommon\"" }
+  end
+
+  s.subspec "jsiexecutor" do |ss|
+    ss.dependency             "React/cxxreact"
+    ss.dependency             "React/jsi"
     ss.dependency             "Folly", folly_version
-    ss.dependency             "React/PrivateDatabase"
     ss.compiler_flags       = folly_compiler_flags
-    ss.source_files         = "ReactCommon/jschelpers/*.{cpp,h}"
-    ss.private_header_files = "ReactCommon/jschelpers/*.h"
-    ss.pod_target_xcconfig  = { "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/ReactCommon\"" }
-    ss.framework            = "JavaScriptCore"
+    ss.source_files         = "ReactCommon/jsiexecutor/jsireact/*.{cpp,h}"
+    ss.private_header_files = "ReactCommon/jsiexecutor/jsireact/*.h"
+    ss.header_dir           = "jsireact"
+    ss.pod_target_xcconfig  = { "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/ReactCommon\", \"$(PODS_TARGET_SRCROOT)/ReactCommon/jsiexecutor\"" }
   end
 
-  s.subspec "jsinspector" do |ss|
-    ss.source_files         = "ReactCommon/jsinspector/*.{cpp,h}"
-    ss.private_header_files = "ReactCommon/jsinspector/*.h"
+  s.subspec "jsi" do |ss|
+    ss.dependency             "Folly", folly_version
+    ss.compiler_flags       = folly_compiler_flags
+    ss.source_files         = "ReactCommon/jsi/*.{cpp,h}"
+    ss.private_header_files = "ReactCommon/jsi/*.h"
+    ss.framework            = "JavaScriptCore"
     ss.pod_target_xcconfig  = { "HEADER_SEARCH_PATHS" => "\"$(PODS_TARGET_SRCROOT)/ReactCommon\"" }
   end
 
@@ -123,7 +139,6 @@ Pod::Spec.new do |s|
   end
 
   s.subspec "cxxreact" do |ss|
-    ss.dependency             "React/jschelpers"
     ss.dependency             "React/jsinspector"
     ss.dependency             "boost-for-react-native", "1.63.0"
     ss.dependency             "Folly", folly_version
diff --git a/React/.clang-format b/React/.clang-format
new file mode 100644
index 00000000000000..e6371fc8bd648d
--- /dev/null
+++ b/React/.clang-format
@@ -0,0 +1,87 @@
+---
+AccessModifierOffset: -1
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: true
+AlignOperands:   false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: WebKit
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit:       120
+CommentPragmas:  '^ IWYU pragma:'
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ForEachMacros:   [ FOR_EACH_RANGE, FOR_EACH, ]
+IncludeCategories:
+  - Regex:           '^<.*\.h(pp)?>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IndentCaseLabels: true
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: true
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Cpp11
+TabWidth:        8
+UseTab:          Never
+...
diff --git a/React/Base/RCTAssert.h b/React/Base/RCTAssert.h
index 6117390db44804..4a6580676971f5 100644
--- a/React/Base/RCTAssert.h
+++ b/React/Base/RCTAssert.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTAssert.m b/React/Base/RCTAssert.m
index 61cefe2ad5fca2..e21b4a7c2d7737 100644
--- a/React/Base/RCTAssert.m
+++ b/React/Base/RCTAssert.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,6 +12,7 @@
 NSString *const RCTJSStackTraceKey = @"RCTJSStackTraceKey";
 NSString *const RCTJSRawStackTraceKey = @"RCTJSRawStackTraceKey";
 NSString *const RCTFatalExceptionName = @"RCTFatalException";
+NSString *const RCTUntruncatedMessageKey = @"RCTUntruncatedMessageKey";
 
 static NSString *const RCTAssertFunctionStack = @"RCTAssertFunctionStack";
 
@@ -128,8 +129,20 @@ void RCTFatal(NSError *error)
     @try {
 #endif
       NSString *name = [NSString stringWithFormat:@"%@: %@", RCTFatalExceptionName, error.localizedDescription];
-      NSString *message = RCTFormatError(error.localizedDescription, error.userInfo[RCTJSStackTraceKey], 75);
-      @throw [[NSException alloc]  initWithName:name reason:message userInfo:nil];
+
+      // Truncate the localized description to 175 characters to avoid wild screen overflows
+      NSString *message = RCTFormatError(error.localizedDescription, error.userInfo[RCTJSStackTraceKey], 175);
+
+      // Attach an untruncated copy of the description to the userInfo, in case it is needed
+      NSMutableDictionary *userInfo = [error.userInfo mutableCopy];
+      [userInfo setObject:RCTFormatError(error.localizedDescription, error.userInfo[RCTJSStackTraceKey], -1)
+                   forKey:RCTUntruncatedMessageKey];
+
+      // Expected resulting exception information:
+      // name: RCTFatalException: <underlying error description>
+      // reason: <underlying error description plus JS stack trace, truncated to 175 characters>
+      // userInfo: <underlying error userinfo, plus untruncated description plus JS stack trace>
+      @throw [[NSException alloc]  initWithName:name reason:message userInfo:userInfo];
 #if DEBUG
     } @catch (NSException *e) {}
 #endif
diff --git a/React/Base/RCTBridge+Private.h b/React/Base/RCTBridge+Private.h
index 1995801ffcaaea..f72ea6fe2eee1d 100644
--- a/React/Base/RCTBridge+Private.h
+++ b/React/Base/RCTBridge+Private.h
@@ -1,13 +1,10 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#import <JavaScriptCore/JavaScriptCore.h>
-#import <JavaScriptCore/JSBase.h>
-
 #import <React/RCTBridge.h>
 
 @class RCTModuleData;
@@ -15,12 +12,12 @@
 
 RCT_EXTERN NSArray<Class> *RCTGetModuleClasses(void);
 
-RCT_EXTERN __attribute__((weak)) void RCTFBQuickPerformanceLoggerConfigureHooks(JSGlobalContextRef ctx);
-
 #if RCT_DEBUG
 RCT_EXTERN void RCTVerifyAllModulesExported(NSArray *extraModules);
 #endif
 
+RCT_EXTERN void RCTRegisterModule(Class);
+
 @interface RCTBridge ()
 
 // Private designated initializer
@@ -139,15 +136,6 @@ RCT_EXTERN void RCTVerifyAllModulesExported(NSArray *extraModules);
 
 @end
 
-@interface RCTBridge (JavaScriptCore)
-
-/**
- * The raw JSGlobalContextRef used by the bridge.
- */
-@property (nonatomic, readonly, assign) JSGlobalContextRef jsContextRef;
-
-@end
-
 @interface RCTBridge (Inspector)
 
 @property (nonatomic, readonly, getter=isInspectable) BOOL inspectable;
@@ -156,6 +144,8 @@ RCT_EXTERN void RCTVerifyAllModulesExported(NSArray *extraModules);
 
 @interface RCTCxxBridge : RCTBridge
 
+@property (nonatomic) void *runtime;
+
 - (instancetype)initWithParentBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
 
 @end
diff --git a/React/Base/RCTBridge.h b/React/Base/RCTBridge.h
index 94cef54365c8bd..420b51a9a36a1b 100644
--- a/React/Base/RCTBridge.h
+++ b/React/Base/RCTBridge.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -95,6 +95,13 @@ typedef NSArray<id<RCTBridgeModule>> *(^RCTBridgeModuleListProvider)(void);
  */
 RCT_EXTERN NSString *RCTBridgeModuleNameForClass(Class bridgeModuleClass);
 
+/**
+ * Experimental.
+ * Check/set if JSI-bound NativeModule is enabled. By default it's off.
+ */
+RCT_EXTERN BOOL RCTTurboModuleEnabled(void);
+RCT_EXTERN void RCTEnableTurboModule(BOOL enabled);
+
 /**
  * Async batched bridge used to communicate with the JavaScript application.
  */
@@ -146,8 +153,12 @@ RCT_EXTERN NSString *RCTBridgeModuleNameForClass(Class bridgeModuleClass);
  * lazily instantiated, so calling these methods for the first time with a given
  * module name/class may cause the class to be sychronously instantiated,
  * potentially blocking both the calling thread and main thread for a short time.
+ *
+ * Note: This method does NOT lazily load the particular module if it's not yet loaded.
  */
 - (id)moduleForName:(NSString *)moduleName;
+- (id)moduleForName:(NSString *)moduleName lazilyLoadIfNecessary:(BOOL)lazilyLoad;
+// Note: This method lazily load the module as necessary.
 - (id)moduleForClass:(Class)moduleClass;
 
 /**
@@ -164,11 +175,6 @@ RCT_EXTERN NSString *RCTBridgeModuleNameForClass(Class bridgeModuleClass);
  */
 - (BOOL)moduleIsInitialized:(Class)moduleClass;
 
-/**
- * Retrieve an extra module that gets bound to the JS context, if any.
- */
-- (id)jsBoundExtraModuleForClass:(Class)moduleClass;
-
 /**
  * All registered bridge module classes.
  */
diff --git a/React/Base/RCTBridge.m b/React/Base/RCTBridge.m
index ba71e6086a948b..7365be5dc5a34b 100644
--- a/React/Base/RCTBridge.m
+++ b/React/Base/RCTBridge.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -45,8 +45,6 @@
   return result;
 }
 
-void RCTFBQuickPerformanceLoggerConfigureHooks(__unused JSGlobalContextRef ctx) { }
-
 /**
  * Register the given class as a bridge module. All modules must be registered
  * prior to the first bridge initialization.
@@ -85,13 +83,17 @@ void RCTRegisterModule(Class moduleClass)
     name = NSStringFromClass(cls);
   }
 
-  if ([name hasPrefix:@"RK"]) {
-    name = [name substringFromIndex:2];
-  } else if ([name hasPrefix:@"RCT"]) {
-    name = [name substringFromIndex:3];
-  }
+  return RCTDropReactPrefixes(name);
+}
+
+static BOOL turboModuleEnabled = NO;
+BOOL RCTTurboModuleEnabled(void)
+{
+  return turboModuleEnabled;
+}
 
-  return name;
+void RCTEnableTurboModule(BOOL enabled) {
+  turboModuleEnabled = enabled;
 }
 
 #if RCT_DEBUG
@@ -129,7 +131,8 @@ void RCTVerifyAllModulesExported(NSArray *extraModules)
           break;
         }
 
-        RCTLogWarn(@"Class %@ was not exported. Did you forget to use RCT_EXPORT_MODULE()?", cls);
+        // Note: Some modules may be lazily loaded and not exported up front, so this message is no longer a warning.
+        RCTLogInfo(@"Class %@ was not exported. Did you forget to use RCT_EXPORT_MODULE()?", cls);
         break;
       }
       superclass = class_getSuperclass(superclass);
@@ -239,9 +242,18 @@ - (id)moduleForName:(NSString *)moduleName
   return [self.batchedBridge moduleForName:moduleName];
 }
 
+- (id)moduleForName:(NSString *)moduleName lazilyLoadIfNecessary:(BOOL)lazilyLoad
+{
+  return [self.batchedBridge moduleForName:moduleName lazilyLoadIfNecessary:lazilyLoad];
+}
+
 - (id)moduleForClass:(Class)moduleClass
 {
-  return [self moduleForName:RCTBridgeModuleNameForClass(moduleClass)];
+  id module = [self.batchedBridge moduleForClass:moduleClass];
+  if (!module) {
+    module = [self moduleForName:RCTBridgeModuleNameForClass(moduleClass)];
+  }
+  return module;
 }
 
 - (NSArray *)modulesConformingToProtocol:(Protocol *)protocol
@@ -263,11 +275,6 @@ - (BOOL)moduleIsInitialized:(Class)moduleClass
   return [self.batchedBridge moduleIsInitialized:moduleClass];
 }
 
-- (id)jsBoundExtraModuleForClass:(Class)moduleClass
-{
-  return [self.batchedBridge jsBoundExtraModuleForClass:moduleClass];
-}
-
 - (void)reload
 {
   #if RCT_ENABLE_INSPECTOR
@@ -281,6 +288,8 @@ - (void)reload
    * Any thread
    */
   dispatch_async(dispatch_get_main_queue(), ^{
+    // WARNING: Invalidation is async, so it may not finish before re-setting up the bridge,
+    // causing some issues. TODO: revisit this post-Fabric/TurboModule.
     [self invalidate];
     [self setUp];
   });
@@ -385,9 +394,4 @@ - (void)registerSegmentWithId:(NSUInteger)segmentId path:(NSString *)path
   [self.batchedBridge registerSegmentWithId:segmentId path:path];
 }
 
-- (JSGlobalContextRef)jsContextRef
-{
-  return [self.batchedBridge jsContextRef];
-}
-
 @end
diff --git a/React/Base/RCTBridgeDelegate.h b/React/Base/RCTBridgeDelegate.h
index b457e87dbc143c..5133d6fb06002b 100644
--- a/React/Base/RCTBridgeDelegate.h
+++ b/React/Base/RCTBridgeDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -72,4 +72,9 @@
 - (void)loadSourceForBridge:(RCTBridge *)bridge
                   withBlock:(RCTSourceLoadBlock)loadCallback;
 
+/**
+ * Retrieve the list of lazy-native-modules names for the given bridge.
+ */
+- (NSDictionary<NSString *, Class> *)extraLazyModuleClassesForBridge:(RCTBridge *)bridge;
+
 @end
diff --git a/React/Base/RCTBridgeMethod.h b/React/Base/RCTBridgeMethod.h
index 04202c6a5f0663..c67799e0eaf820 100644
--- a/React/Base/RCTBridgeMethod.h
+++ b/React/Base/RCTBridgeMethod.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTBridgeModule.h b/React/Base/RCTBridgeModule.h
index 75908a1b0f797d..a01e4117aca53a 100644
--- a/React/Base/RCTBridgeModule.h
+++ b/React/Base/RCTBridgeModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -73,6 +73,16 @@ RCT_EXTERN void RCTRegisterModule(Class); \
 + (NSString *)moduleName { return @#js_name; } \
 + (void)load { RCTRegisterModule(self); }
 
+/**
+ * To improve startup performance users may want to generate their module lists
+ * at build time and hook the delegate to merge with the runtime list. This
+ * macro takes the place of the above for those cases by omitting the +load
+ * generation.
+ *
+ */
+#define RCT_EXPORT_PRE_REGISTERED_MODULE(js_name) \
++ (NSString *)moduleName { return @#js_name; }
+
 // Implemented by RCT_EXPORT_MODULE
 + (NSString *)moduleName;
 
@@ -291,7 +301,7 @@ RCT_EXTERN void RCTRegisterModule(Class); \
  * for the lifetime of the bridge, so it is not suitable for returning dynamic values, but may be used for long-lived
  * values such as session keys, that are regenerated only as part of a reload of the entire React application.
  *
- * If you implement this method and do not implement `requiresMainThreadSetup`, you will trigger deprecated logic
+ * If you implement this method and do not implement `requiresMainQueueSetup`, you will trigger deprecated logic
  * that eagerly initializes your module on bridge startup. In the future, this behaviour will be changed to default
  * to initializing lazily, and even modules with constants will be initialized lazily.
  */
@@ -311,3 +321,12 @@ RCT_EXTERN void RCTRegisterModule(Class); \
 - (void)partialBatchDidFlush;
 
 @end
+
+/**
+ * Experimental.
+ * A protocol to declare that a class supports TurboModule.
+ * This may be removed in the future.
+ */
+@protocol RCTTurboModule <NSObject>
+
+@end
diff --git a/React/Base/RCTBundleURLProvider.h b/React/Base/RCTBundleURLProvider.h
index ff79a8ae69331e..b6de37f5cb6e05 100644
--- a/React/Base/RCTBundleURLProvider.h
+++ b/React/Base/RCTBundleURLProvider.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTBundleURLProvider.m b/React/Base/RCTBundleURLProvider.m
index e39ff1de8e7e3d..4187f1f176bdcd 100644
--- a/React/Base/RCTBundleURLProvider.m
+++ b/React/Base/RCTBundleURLProvider.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTConvert.h b/React/Base/RCTConvert.h
index 1d11dada783835..07d7b4709f0d5e 100644
--- a/React/Base/RCTConvert.h
+++ b/React/Base/RCTConvert.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTConvert.m b/React/Base/RCTConvert.m
index f7c80c3fe07d32..2859dda41e72bf 100644
--- a/React/Base/RCTConvert.m
+++ b/React/Base/RCTConvert.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTCxxConvert.h b/React/Base/RCTCxxConvert.h
index 8519e774a79c3b..65c156ff936cbf 100644
--- a/React/Base/RCTCxxConvert.h
+++ b/React/Base/RCTCxxConvert.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTCxxConvert.m b/React/Base/RCTCxxConvert.m
index 458a1b90846863..b27359b3f4154b 100644
--- a/React/Base/RCTCxxConvert.m
+++ b/React/Base/RCTCxxConvert.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTDefines.h b/React/Base/RCTDefines.h
index 6d100a8544e8c4..58fe299687be12 100644
--- a/React/Base/RCTDefines.h
+++ b/React/Base/RCTDefines.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTDisplayLink.h b/React/Base/RCTDisplayLink.h
index e6d850ef83dc4c..b64146dc24915f 100644
--- a/React/Base/RCTDisplayLink.h
+++ b/React/Base/RCTDisplayLink.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTDisplayLink.m b/React/Base/RCTDisplayLink.m
index 9a08d130ae4650..eefd42a89e26e9 100644
--- a/React/Base/RCTDisplayLink.m
+++ b/React/Base/RCTDisplayLink.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTErrorCustomizer.h b/React/Base/RCTErrorCustomizer.h
index b7d9e391bd8a9e..d47ac8d19028e6 100644
--- a/React/Base/RCTErrorCustomizer.h
+++ b/React/Base/RCTErrorCustomizer.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTErrorInfo.h b/React/Base/RCTErrorInfo.h
index aff6b208d23e49..129ef2c4aafa64 100644
--- a/React/Base/RCTErrorInfo.h
+++ b/React/Base/RCTErrorInfo.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTErrorInfo.m b/React/Base/RCTErrorInfo.m
index f3a25560cdad77..d6628c5c61858b 100644
--- a/React/Base/RCTErrorInfo.m
+++ b/React/Base/RCTErrorInfo.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTEventDispatcher.h b/React/Base/RCTEventDispatcher.h
index 59f5a6039b9827..212c9e0a7edcf3 100644
--- a/React/Base/RCTEventDispatcher.h
+++ b/React/Base/RCTEventDispatcher.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTEventDispatcher.m b/React/Base/RCTEventDispatcher.m
index 00ec08f2f95df7..4e05e2b43eb2c3 100644
--- a/React/Base/RCTEventDispatcher.m
+++ b/React/Base/RCTEventDispatcher.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTFrameUpdate.h b/React/Base/RCTFrameUpdate.h
index 197aef68983757..1e93491552f5b4 100644
--- a/React/Base/RCTFrameUpdate.h
+++ b/React/Base/RCTFrameUpdate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTFrameUpdate.m b/React/Base/RCTFrameUpdate.m
index d406aa3f4d6a67..981c663a842b5e 100644
--- a/React/Base/RCTFrameUpdate.m
+++ b/React/Base/RCTFrameUpdate.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTImageSource.h b/React/Base/RCTImageSource.h
index 81f184e3e0b2df..f989111bffc5aa 100644
--- a/React/Base/RCTImageSource.h
+++ b/React/Base/RCTImageSource.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTImageSource.m b/React/Base/RCTImageSource.m
index feb2f5abd24fe4..0916a4d5167c3b 100644
--- a/React/Base/RCTImageSource.m
+++ b/React/Base/RCTImageSource.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTInvalidating.h b/React/Base/RCTInvalidating.h
index 89b7162d7d58aa..02e8938fa3adfe 100644
--- a/React/Base/RCTInvalidating.h
+++ b/React/Base/RCTInvalidating.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTJSCErrorHandling.h b/React/Base/RCTJSCErrorHandling.h
deleted file mode 100644
index cd3c11400c2f0a..00000000000000
--- a/React/Base/RCTJSCErrorHandling.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import <JavaScriptCore/JavaScriptCore.h>
-
-#import <React/RCTDefines.h>
-
-/**
- Translates a given exception into an NSError.
-
- @param exception The JavaScript exception object to translate into an NSError. This must be
- a JavaScript Error object, otherwise no stack trace information will be available.
-
- @return The translated NSError object
-
- - The JS exception's name property is incorporated in the NSError's localized description
- - The JS exception's message property is the NSError's failure reason
- - The JS exception's unsymbolicated stack trace is available via the NSError userInfo's RCTJSExceptionUnsymbolicatedStackTraceKey
- */
-RCT_EXTERN NSError *RCTNSErrorFromJSError(JSValue *exception);
-
-/**
- Translates a given exception into an NSError.
-
- @see RCTNSErrorFromJSError for details
- */
-RCT_EXTERN NSError *RCTNSErrorFromJSErrorRef(JSValueRef exceptionRef, JSGlobalContextRef ctx);
diff --git a/React/Base/RCTJSCErrorHandling.mm b/React/Base/RCTJSCErrorHandling.mm
deleted file mode 100644
index ed0490d94766e3..00000000000000
--- a/React/Base/RCTJSCErrorHandling.mm
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "RCTJSCErrorHandling.h"
-
-#import <jschelpers/JavaScriptCore.h>
-
-#import "RCTAssert.h"
-#import "RCTJSStackFrame.h"
-#import "RCTLog.h"
-
-NSString *const RCTJSExceptionUnsymbolicatedStackTraceKey = @"RCTJSExceptionUnsymbolicatedStackTraceKey";
-
-NSError *RCTNSErrorFromJSError(JSValue *exception)
-{
-  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
-  userInfo[NSLocalizedDescriptionKey] = [NSString stringWithFormat:@"Unhandled JS Exception: %@", [exception[@"name"] toString] ?: @"Unknown"];
-  NSString *const exceptionMessage = [exception[@"message"] toString];
-  if ([exceptionMessage length]) {
-    userInfo[NSLocalizedFailureReasonErrorKey] = exceptionMessage;
-  }
-  NSString *const stack = [exception[@"stack"] toString];
-  if ([@"undefined" isEqualToString:stack]) {
-    RCTLogWarn(@"Couldn't get stack trace for %@:%@", exception[@"sourceURL"], exception[@"line"]);
-  } else if ([stack length]) {
-    NSArray<RCTJSStackFrame *> *const unsymbolicatedFrames = [RCTJSStackFrame stackFramesWithLines:stack];
-    userInfo[RCTJSStackTraceKey] = unsymbolicatedFrames;
-  }
-  return [NSError errorWithDomain:RCTErrorDomain code:1 userInfo:userInfo];
-}
-
-NSError *RCTNSErrorFromJSErrorRef(JSValueRef exceptionRef, JSGlobalContextRef ctx)
-{
-  JSContext *context = [JSC_JSContext(ctx) contextWithJSGlobalContextRef:ctx];
-  JSValue *exception = [JSC_JSValue(ctx) valueWithJSValueRef:exceptionRef inContext:context];
-  return RCTNSErrorFromJSError(exception);
-}
diff --git a/React/Base/RCTJSStackFrame.h b/React/Base/RCTJSStackFrame.h
index 3a4504c7ed75a0..ee46def2077cbb 100644
--- a/React/Base/RCTJSStackFrame.h
+++ b/React/Base/RCTJSStackFrame.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTJSStackFrame.m b/React/Base/RCTJSStackFrame.m
index a60d78b1093b4c..ed2ea22e88d7a0 100644
--- a/React/Base/RCTJSStackFrame.m
+++ b/React/Base/RCTJSStackFrame.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTJavaScriptExecutor.h b/React/Base/RCTJavaScriptExecutor.h
index b7c8f7421d9ac9..d3739cb663dddb 100644
--- a/React/Base/RCTJavaScriptExecutor.h
+++ b/React/Base/RCTJavaScriptExecutor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,6 @@
 
 #import <objc/runtime.h>
 
-#import <JavaScriptCore/JavaScriptCore.h>
-
 #import <React/RCTBridgeModule.h>
 #import <React/RCTInvalidating.h>
 
diff --git a/React/Base/RCTJavaScriptLoader.h b/React/Base/RCTJavaScriptLoader.h
index 946e8fd71f607e..1e1d3b887f0141 100755
--- a/React/Base/RCTJavaScriptLoader.h
+++ b/React/Base/RCTJavaScriptLoader.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTJavaScriptLoader.mm b/React/Base/RCTJavaScriptLoader.mm
index 983555dbd1a4b2..5f14bd22ac4d60 100755
--- a/React/Base/RCTJavaScriptLoader.mm
+++ b/React/Base/RCTJavaScriptLoader.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 #import <sys/stat.h>
 
 #import <cxxreact/JSBundleType.h>
-#import <jschelpers/JavaScriptCore.h>
 
 #import "RCTBridge.h"
 #import "RCTConvert.h"
@@ -20,6 +19,8 @@
 
 NSString *const RCTJavaScriptLoaderErrorDomain = @"RCTJavaScriptLoaderErrorDomain";
 
+static const int32_t JSNoBytecodeFileFormatVersion = -1;
+
 @interface RCTSource()
 {
 @public
diff --git a/React/Base/RCTKeyCommands.h b/React/Base/RCTKeyCommands.h
index 111031ba64c018..4c9c1fede01837 100644
--- a/React/Base/RCTKeyCommands.h
+++ b/React/Base/RCTKeyCommands.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTKeyCommands.m b/React/Base/RCTKeyCommands.m
index 581e937433e793..4bde8957cb7cf9 100644
--- a/React/Base/RCTKeyCommands.m
+++ b/React/Base/RCTKeyCommands.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTLog.h b/React/Base/RCTLog.h
index 9f9317da410c66..3477b48c616deb 100644
--- a/React/Base/RCTLog.h
+++ b/React/Base/RCTLog.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTLog.mm b/React/Base/RCTLog.mm
index edb92fe0146879..dd11bc38b00e8a 100644
--- a/React/Base/RCTLog.mm
+++ b/React/Base/RCTLog.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTManagedPointer.h b/React/Base/RCTManagedPointer.h
index 5e7ef3a199f0bb..038590787ef53b 100644
--- a/React/Base/RCTManagedPointer.h
+++ b/React/Base/RCTManagedPointer.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTManagedPointer.mm b/React/Base/RCTManagedPointer.mm
index 5cdb120f429f2d..0d0c19c3d5681c 100644
--- a/React/Base/RCTManagedPointer.mm
+++ b/React/Base/RCTManagedPointer.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTModuleData.h b/React/Base/RCTModuleData.h
index 14fa0a8ded7690..844ea922ce6b8f 100644
--- a/React/Base/RCTModuleData.h
+++ b/React/Base/RCTModuleData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTModuleData.mm b/React/Base/RCTModuleData.mm
index b248d51b728bb1..ba2dbd5196f9d4 100644
--- a/React/Base/RCTModuleData.mm
+++ b/React/Base/RCTModuleData.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTModuleMethod.h b/React/Base/RCTModuleMethod.h
index 1882e2259151ac..472b755afc606d 100644
--- a/React/Base/RCTModuleMethod.h
+++ b/React/Base/RCTModuleMethod.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTModuleMethod.mm b/React/Base/RCTModuleMethod.mm
index e121240b339fad..e9a36575849c11 100644
--- a/React/Base/RCTModuleMethod.mm
+++ b/React/Base/RCTModuleMethod.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTMultipartDataTask.h b/React/Base/RCTMultipartDataTask.h
index 92967e2ae3ad65..276d4175cb4b74 100644
--- a/React/Base/RCTMultipartDataTask.h
+++ b/React/Base/RCTMultipartDataTask.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTMultipartDataTask.m b/React/Base/RCTMultipartDataTask.m
index 82c4b51e5840ea..cd429c0977749e 100644
--- a/React/Base/RCTMultipartDataTask.m
+++ b/React/Base/RCTMultipartDataTask.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTMultipartStreamReader.h b/React/Base/RCTMultipartStreamReader.h
index 7f7c6f95b27cd5..775c3ec6318050 100644
--- a/React/Base/RCTMultipartStreamReader.h
+++ b/React/Base/RCTMultipartStreamReader.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTMultipartStreamReader.m b/React/Base/RCTMultipartStreamReader.m
index 53a16305a8d5a5..5c0e7c88e590ac 100644
--- a/React/Base/RCTMultipartStreamReader.m
+++ b/React/Base/RCTMultipartStreamReader.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTNullability.h b/React/Base/RCTNullability.h
index 9994a075617653..436fafcc897ce1 100644
--- a/React/Base/RCTNullability.h
+++ b/React/Base/RCTNullability.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTParserUtils.h b/React/Base/RCTParserUtils.h
index 56945b34851004..438ccfbb135a5b 100644
--- a/React/Base/RCTParserUtils.h
+++ b/React/Base/RCTParserUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTParserUtils.m b/React/Base/RCTParserUtils.m
index aa13b6344ac4cb..2a6fea6c8700e2 100644
--- a/React/Base/RCTParserUtils.m
+++ b/React/Base/RCTParserUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTPerformanceLogger.h b/React/Base/RCTPerformanceLogger.h
index 92ede0c0c9d2b1..f1a615f49e4162 100644
--- a/React/Base/RCTPerformanceLogger.h
+++ b/React/Base/RCTPerformanceLogger.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,10 +19,8 @@ typedef NS_ENUM(NSUInteger, RCTPLTag) {
   RCTPLNativeModuleInit,
   RCTPLNativeModuleMainThread,
   RCTPLNativeModulePrepareConfig,
-  RCTPLNativeModuleInjectConfig,
   RCTPLNativeModuleMainThreadUsesCount,
   RCTPLJSCWrapperOpenLibrary,
-  RCTPLJSCExecutorSetup,
   RCTPLBridgeStartup,
   RCTPLTTI,
   RCTPLBundleSize,
diff --git a/React/Base/RCTPerformanceLogger.m b/React/Base/RCTPerformanceLogger.m
index 2427d7a8a64505..af7cc7118c8fdf 100644
--- a/React/Base/RCTPerformanceLogger.m
+++ b/React/Base/RCTPerformanceLogger.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTPlatform.h b/React/Base/RCTPlatform.h
index 5eae2a8c50c65d..63e8a7f1b45f1e 100644
--- a/React/Base/RCTPlatform.h
+++ b/React/Base/RCTPlatform.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTPlatform.m b/React/Base/RCTPlatform.m
index f960f5d241bfd1..9054297662e920 100644
--- a/React/Base/RCTPlatform.m
+++ b/React/Base/RCTPlatform.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTReloadCommand.h b/React/Base/RCTReloadCommand.h
index d70492fe52e8b6..ddf0bd87205e58 100644
--- a/React/Base/RCTReloadCommand.h
+++ b/React/Base/RCTReloadCommand.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTReloadCommand.m b/React/Base/RCTReloadCommand.m
index 98c0f2f8da7244..2e69165d97f5ae 100644
--- a/React/Base/RCTReloadCommand.m
+++ b/React/Base/RCTReloadCommand.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootContentView.h b/React/Base/RCTRootContentView.h
index 12ea0dbb651235..3a9496b300b62f 100644
--- a/React/Base/RCTRootContentView.h
+++ b/React/Base/RCTRootContentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootContentView.m b/React/Base/RCTRootContentView.m
index 77e41a9d822e90..2fdda007444d1d 100644
--- a/React/Base/RCTRootContentView.m
+++ b/React/Base/RCTRootContentView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootView.h b/React/Base/RCTRootView.h
index a7cdf058765a67..352ac0fbd9402e 100644
--- a/React/Base/RCTRootView.h
+++ b/React/Base/RCTRootView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootView.m b/React/Base/RCTRootView.m
index edc49ea1a9f754..a64e05688bcc3c 100644
--- a/React/Base/RCTRootView.m
+++ b/React/Base/RCTRootView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootViewDelegate.h b/React/Base/RCTRootViewDelegate.h
index 55630a2fa317c4..bd3a4f9ac0ce87 100644
--- a/React/Base/RCTRootViewDelegate.h
+++ b/React/Base/RCTRootViewDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTRootViewInternal.h b/React/Base/RCTRootViewInternal.h
index 93f7a88ef6bc51..7ddabdaae16279 100644
--- a/React/Base/RCTRootViewInternal.h
+++ b/React/Base/RCTRootViewInternal.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTVRemoteHandler.h b/React/Base/RCTTVRemoteHandler.h
index b220414a4bd5a4..30390c94fedabf 100644
--- a/React/Base/RCTTVRemoteHandler.h
+++ b/React/Base/RCTTVRemoteHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTVRemoteHandler.m b/React/Base/RCTTVRemoteHandler.m
index 68d365c9166f93..48a65ed91ac052 100644
--- a/React/Base/RCTTVRemoteHandler.m
+++ b/React/Base/RCTTVRemoteHandler.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTouchEvent.h b/React/Base/RCTTouchEvent.h
index 2d259b15f28fff..5ba6715573ca59 100644
--- a/React/Base/RCTTouchEvent.h
+++ b/React/Base/RCTTouchEvent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTouchEvent.m b/React/Base/RCTTouchEvent.m
index 0f1fdc30552f32..f5ea609a40c590 100644
--- a/React/Base/RCTTouchEvent.m
+++ b/React/Base/RCTTouchEvent.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTouchHandler.h b/React/Base/RCTTouchHandler.h
index 514803f2b244df..e510363e540e62 100644
--- a/React/Base/RCTTouchHandler.h
+++ b/React/Base/RCTTouchHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTTouchHandler.m b/React/Base/RCTTouchHandler.m
index 98b0ef603cae94..8cca0f517e3726 100644
--- a/React/Base/RCTTouchHandler.m
+++ b/React/Base/RCTTouchHandler.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTURLRequestDelegate.h b/React/Base/RCTURLRequestDelegate.h
index 6bc7afcd3824ff..ab8e24f9f38e61 100644
--- a/React/Base/RCTURLRequestDelegate.h
+++ b/React/Base/RCTURLRequestDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTURLRequestHandler.h b/React/Base/RCTURLRequestHandler.h
index acf0c2c489fc3d..b176bd2a2b5044 100644
--- a/React/Base/RCTURLRequestHandler.h
+++ b/React/Base/RCTURLRequestHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTUtils.h b/React/Base/RCTUtils.h
index d8586a3cc23576..d1334c9ec5874c 100644
--- a/React/Base/RCTUtils.h
+++ b/React/Base/RCTUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -158,4 +158,7 @@ RCT_EXTERN NSString *RCTUIKitLocalizedString(NSString *string);
 RCT_EXTERN NSString *__nullable RCTGetURLQueryParam(NSURL *__nullable URL, NSString *param);
 RCT_EXTERN NSURL *__nullable RCTURLByReplacingQueryParam(NSURL *__nullable URL, NSString *param, NSString *__nullable value);
 
+// Given a string, drop common RN prefixes (RCT, RK, etc.)
+RCT_EXTERN NSString *RCTDropReactPrefixes(NSString *s);
+
 NS_ASSUME_NONNULL_END
diff --git a/React/Base/RCTUtils.m b/React/Base/RCTUtils.m
index e32ee3c3b58213..12bca49ba989ab 100644
--- a/React/Base/RCTUtils.m
+++ b/React/Base/RCTUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -871,7 +871,7 @@ static void RCTGetRGBAColorComponents(CGColorRef color, CGFloat rgba[4])
     default:
     {
 
-#ifdef RCT_DEBUG
+#if RCT_DEBUG
       //unsupported format
       RCTLogError(@"Unsupported color model: %i", model);
 #endif
@@ -963,3 +963,14 @@ static void RCTGetRGBAColorComponents(CGColorRef color, CGFloat rgba[4])
   components.queryItems = queryItems;
   return components.URL;
 }
+
+RCT_EXTERN NSString *RCTDropReactPrefixes(NSString *s)
+{
+  if ([s hasPrefix:@"RK"]) {
+    return [s substringFromIndex:2];
+  } else if ([s hasPrefix:@"RCT"]) {
+    return [s substringFromIndex:3];
+  }
+
+  return s;
+}
diff --git a/React/Base/RCTVersion.h b/React/Base/RCTVersion.h
index ca46f31421eac3..e0e53692c34c01 100644
--- a/React/Base/RCTVersion.h
+++ b/React/Base/RCTVersion.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/RCTVersion.m b/React/Base/RCTVersion.m
index 41f178395c9018..b7cbcdf60c2181 100644
--- a/React/Base/RCTVersion.m
+++ b/React/Base/RCTVersion.m
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,8 +21,8 @@ static void __makeVersion()
 {
   __rnVersion = @{
                   RCTVersionMajor: @(0),
-                  RCTVersionMinor: @(0),
-                  RCTVersionPatch: @(0),
+                  RCTVersionMinor: @(58),
+                  RCTVersionPatch: @(6),
                   RCTVersionPrerelease: [NSNull null],
                   };
 }
diff --git a/React/Base/Surface/RCTSurface.h b/React/Base/Surface/RCTSurface.h
index 955affd189b38a..cb3772af4ee023 100644
--- a/React/Base/Surface/RCTSurface.h
+++ b/React/Base/Surface/RCTSurface.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -114,6 +114,15 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (BOOL)synchronouslyWaitForStage:(RCTSurfaceStage)stage timeout:(NSTimeInterval)timeout;
 
+#pragma mark - Start & Stop
+
+/**
+ * Starts or stops the Surface.
+ * Those methods are not implemented yet for regular RCTSurface.
+ */
+- (BOOL)start;
+- (BOOL)stop;
+
 #pragma mark - Mounting/Unmounting of React components
 
 /**
diff --git a/React/Base/Surface/RCTSurface.mm b/React/Base/Surface/RCTSurface.mm
index 30110ceae42e71..8b62fea663d29b 100644
--- a/React/Base/Surface/RCTSurface.mm
+++ b/React/Base/Surface/RCTSurface.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -560,6 +560,20 @@ - (void)uiManagerDidPerformMounting:(RCTUIManager *)manager
   }
 }
 
+- (BOOL)start
+{
+  // Does nothing.
+  // The Start&Stop feature is not implemented for regular Surface yet.
+  return YES;
+}
+
+- (BOOL)stop
+{
+  // Does nothing.
+  // The Start&Stop feature is not implemented for regular Surface yet.
+  return YES;
+}
+
 #pragma mark - Mounting/Unmounting of React components
 
 - (void)mountReactComponentWithBridge:(RCTBridge *)bridge moduleName:(NSString *)moduleName params:(NSDictionary *)params
diff --git a/React/Base/Surface/RCTSurfaceDelegate.h b/React/Base/Surface/RCTSurfaceDelegate.h
index adfea477bf6cf7..b006ecf03a7fa1 100644
--- a/React/Base/Surface/RCTSurfaceDelegate.h
+++ b/React/Base/Surface/RCTSurfaceDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceRootShadowView.h b/React/Base/Surface/RCTSurfaceRootShadowView.h
index 09a9015996f2c4..c277f36e824781 100644
--- a/React/Base/Surface/RCTSurfaceRootShadowView.h
+++ b/React/Base/Surface/RCTSurfaceRootShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceRootShadowView.m b/React/Base/Surface/RCTSurfaceRootShadowView.m
index a0765583b3fa79..5a706928d89b56 100644
--- a/React/Base/Surface/RCTSurfaceRootShadowView.m
+++ b/React/Base/Surface/RCTSurfaceRootShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceRootShadowViewDelegate.h b/React/Base/Surface/RCTSurfaceRootShadowViewDelegate.h
index c2b36434b08dc5..f14ceec4290fcb 100644
--- a/React/Base/Surface/RCTSurfaceRootShadowViewDelegate.h
+++ b/React/Base/Surface/RCTSurfaceRootShadowViewDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceRootView.h b/React/Base/Surface/RCTSurfaceRootView.h
index 62f53cd559405e..758a8fd34075b5 100644
--- a/React/Base/Surface/RCTSurfaceRootView.h
+++ b/React/Base/Surface/RCTSurfaceRootView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceRootView.mm b/React/Base/Surface/RCTSurfaceRootView.mm
index 25f67d5f267d4f..9b889431433f21 100644
--- a/React/Base/Surface/RCTSurfaceRootView.mm
+++ b/React/Base/Surface/RCTSurfaceRootView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceStage.h b/React/Base/Surface/RCTSurfaceStage.h
index 31bdbdc83f44f1..a9bb0144711151 100644
--- a/React/Base/Surface/RCTSurfaceStage.h
+++ b/React/Base/Surface/RCTSurfaceStage.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,6 +21,18 @@ typedef NS_OPTIONS(NSInteger, RCTSurfaceStage) {
   RCTSurfaceStageSurfaceDidInitialLayout = 1 << 5,     // UIManager completed the first layout pass
   RCTSurfaceStageSurfaceDidInitialMounting = 1 << 6,   // UIManager completed the first mounting pass
   RCTSurfaceStageSurfaceDidStop = 1 << 7,              // Surface stopped
+
+  // Most of the previously existed stages make no sense in the new architecture;
+  // now Surface exposes only three simple stages:
+  //
+  // Surface object was constructed and still valid.
+  RCTSurfaceStageInitialized = RCTSurfaceStageSurfaceDidInitialize,
+  // Surface was started.
+  RCTSurfaceStageStarted = 1 << 8,
+  // All off-main-thread work is done; we are ready to mount the UI.
+  RCTSurfaceStagePrepared = RCTSurfaceStageBridgeDidLoad | RCTSurfaceStageModuleDidLoad | RCTSurfaceStageSurfaceDidRun | RCTSurfaceStageSurfaceDidInitialRendering | RCTSurfaceStageSurfaceDidInitialLayout,
+  // All main-thread work is done, the UI was mounted.
+  RCTSurfaceStageMounted = RCTSurfaceStageSurfaceDidInitialMounting,
 };
 
 /**
diff --git a/React/Base/Surface/RCTSurfaceStage.m b/React/Base/Surface/RCTSurfaceStage.m
index bf1234fa9017ab..53054dd70e71bf 100644
--- a/React/Base/Surface/RCTSurfaceStage.m
+++ b/React/Base/Surface/RCTSurfaceStage.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceView+Internal.h b/React/Base/Surface/RCTSurfaceView+Internal.h
index c04641eaf9257a..26ae9600fd1592 100644
--- a/React/Base/Surface/RCTSurfaceView+Internal.h
+++ b/React/Base/Surface/RCTSurfaceView+Internal.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceView.h b/React/Base/Surface/RCTSurfaceView.h
index 42f953bb6b3544..f5f37a91ba6588 100644
--- a/React/Base/Surface/RCTSurfaceView.h
+++ b/React/Base/Surface/RCTSurfaceView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/RCTSurfaceView.mm b/React/Base/Surface/RCTSurfaceView.mm
index 0c78f54eaa4b74..f519da112092a6 100644
--- a/React/Base/Surface/RCTSurfaceView.mm
+++ b/React/Base/Surface/RCTSurfaceView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.h b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.h
index 6e07b1ac0a8f7b..702746dbd7f5b8 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.h
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm
index a54a1ab5f64ee1..3f72b057d7da5a 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h
index 25894ec0015611..67ea6ee8102d59 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,6 +26,13 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @interface RCTSurfaceHostingView : UIView <RCTSurfaceDelegate>
 
+/**
+ * Create an instance of RCTSurface to be hosted.
+ */
++ (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge
+                             moduleName:(NSString *)moduleName
+                      initialProperties:(NSDictionary *)initialProperties;
+
 /**
  * Designated initializer.
  * Instanciates a view with given Surface object.
@@ -44,13 +51,6 @@ NS_ASSUME_NONNULL_BEGIN
              initialProperties:(NSDictionary *)initialProperties
                sizeMeasureMode:(RCTSurfaceSizeMeasureMode)sizeMeasureMode;
 
-/**
- * Create an instance of RCTSurface to be hosted.
- */
-- (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge
-                             moduleName:(NSString *)moduleName
-                      initialProperties:(NSDictionary *)initialProperties;
-
 /**
  * Surface object which is currently using to power the view.
  * Read-only.
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm
index f8c3a5d6981391..f3d999d978302b 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,6 +26,13 @@ @implementation RCTSurfaceHostingView {
   RCTSurfaceStage _stage;
 }
 
++ (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge
+                             moduleName:(NSString *)moduleName
+                      initialProperties:(NSDictionary *)initialProperties
+{
+  return [[RCTSurface alloc] initWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
+}
+
 RCT_NOT_IMPLEMENTED(- (instancetype)init)
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithFrame:(CGRect)frame)
 RCT_NOT_IMPLEMENTED(- (nullable instancetype)initWithCoder:(NSCoder *)coder)
@@ -35,7 +42,7 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
              initialProperties:(NSDictionary *)initialProperties
                sizeMeasureMode:(RCTSurfaceSizeMeasureMode)sizeMeasureMode
 {
-  RCTSurface *surface = [self createSurfaceWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
+  RCTSurface *surface = [[self class] createSurfaceWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
   return [self initWithSurface:surface sizeMeasureMode:sizeMeasureMode];
 }
 
@@ -43,6 +50,7 @@ - (instancetype)initWithSurface:(RCTSurface *)surface sizeMeasureMode:(RCTSurfac
 {
   if (self = [super initWithFrame:CGRectZero]) {
     _surface = surface;
+    [_surface start];
     _sizeMeasureMode = sizeMeasureMode;
 
     _surface.delegate = self;
@@ -53,11 +61,9 @@ - (instancetype)initWithSurface:(RCTSurface *)surface sizeMeasureMode:(RCTSurfac
   return self;
 }
 
-- (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge
-                             moduleName:(NSString *)moduleName
-                      initialProperties:(NSDictionary *)initialProperties
+- (void)dealloc
 {
-  return [[RCTSurface alloc] initWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
+  [_surface stop];
 }
 
 - (void)setFrame:(CGRect)frame
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.h b/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.h
index ead7429b557419..594645540d997c 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.h
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.mm b/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.mm
index 946b027d8c0ac1..05bd50c36ed032 100644
--- a/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.mm
+++ b/React/Base/Surface/SurfaceHostingView/RCTSurfaceSizeMeasureMode.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxBridge/NSDataBigString.h b/React/CxxBridge/NSDataBigString.h
index c11d26efa92bf7..473496c3a5431b 100644
--- a/React/CxxBridge/NSDataBigString.h
+++ b/React/CxxBridge/NSDataBigString.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxBridge/NSDataBigString.mm b/React/CxxBridge/NSDataBigString.mm
index bea45458cdeeb1..31a92586739af0 100644
--- a/React/CxxBridge/NSDataBigString.mm
+++ b/React/CxxBridge/NSDataBigString.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxBridge/RCTCxxBridge.mm b/React/CxxBridge/RCTCxxBridge.mm
index ae4f97eda9fd06..5f676792214b2a 100644
--- a/React/CxxBridge/RCTCxxBridge.mm
+++ b/React/CxxBridge/RCTCxxBridge.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,15 +29,14 @@
 #import <cxxreact/CxxNativeModule.h>
 #import <cxxreact/Instance.h>
 #import <cxxreact/JSBundleType.h>
-#import <cxxreact/JSCExecutor.h>
 #import <cxxreact/JSIndexedRAMBundle.h>
 #import <cxxreact/ModuleRegistry.h>
-#import <cxxreact/Platform.h>
 #import <cxxreact/RAMBundleRegistry.h>
-#import <jschelpers/Value.h>
+#import <cxxreact/ReactMarker.h>
+#import <jsi/JSCRuntime.h>
+#import <jsireact/JSIExecutor.h>
 
 #import "NSDataBigString.h"
-#import "RCTJSCHelpers.h"
 #import "RCTMessageThread.h"
 #import "RCTObjcExecutor.h"
 
@@ -57,6 +56,8 @@
 
 typedef void (^RCTPendingCall)();
 
+using namespace facebook::jsc;
+using namespace facebook::jsi;
 using namespace facebook::react;
 
 /**
@@ -154,6 +155,7 @@ @implementation RCTCxxBridge
 {
   BOOL _wasBatchActive;
   BOOL _didInvalidate;
+  BOOL _moduleRegistryCreated;
 
   NSMutableArray<RCTPendingCall> *_pendingCalls;
   std::atomic<NSInteger> _pendingCount;
@@ -168,6 +170,7 @@ @implementation RCTCxxBridge
   // JS thread management
   NSThread *_jsThread;
   std::shared_ptr<RCTMessageThread> _jsMessageThread;
+  std::mutex _moduleRegistryLock;
 
   // This is uniquely owned, but weak_ptr is used.
   std::shared_ptr<Instance> _reactInstance;
@@ -178,18 +181,6 @@ @implementation RCTCxxBridge
 @synthesize performanceLogger = _performanceLogger;
 @synthesize valid = _valid;
 
-+ (void)initialize
-{
-  if (self == [RCTCxxBridge class]) {
-    RCTPrepareJSCExecutor();
-  }
-}
-
-- (JSGlobalContextRef)jsContextRef
-{
-  return (JSGlobalContextRef)(_reactInstance ? _reactInstance->getJavaScriptContext() : nullptr);
-}
-
 - (std::shared_ptr<MessageQueueThread>)jsMessageThread
 {
   return _jsMessageThread;
@@ -227,9 +218,9 @@ - (instancetype)initWithParentBridge:(RCTBridge *)bridge
      */
     _valid = YES;
     _loading = YES;
+    _moduleRegistryCreated = NO;
     _pendingCalls = [NSMutableArray new];
     _displayLink = [RCTDisplayLink new];
-
     _moduleDataByName = [NSMutableDictionary new];
     _moduleClassesByID = [NSMutableArray new];
     _moduleDataByID = [NSMutableArray new];
@@ -319,6 +310,7 @@ - (void)start
   [self registerExtraModules];
   // Initialize all native modules that cannot be loaded lazily
   (void)[self _initializeModules:RCTGetModuleClasses() withDispatchGroup:prepareBridge lazilyDiscovered:NO];
+  [self registerExtraLazyModules];
 
   [_performanceLogger markStopForTag:RCTPLNativeModuleInit];
 
@@ -335,26 +327,13 @@ - (void)start
       executorFactory = [cxxDelegate jsExecutorFactoryForBridge:self];
     }
     if (!executorFactory) {
-      BOOL useCustomJSC =
-        [self.delegate respondsToSelector:@selector(shouldBridgeUseCustomJSC:)] &&
-        [self.delegate shouldBridgeUseCustomJSC:self];
-      // We use the name of the device and the app for debugging & metrics
-#if !TARGET_OS_OSX // TODO(macOS ISS#2323203)
-      NSString *deviceName = [[UIDevice currentDevice] name];
-#else // [TODO(macOS ISS#2323203)
-      NSString *deviceName = nil;
-#endif // ]TODO(macOS ISS#2323203)
-      NSString *appName = [[NSBundle mainBundle] bundleIdentifier];
-      // The arg is a cache dir.  It's not used with standard JSC.
-      executorFactory.reset(new JSCExecutorFactory(folly::dynamic::object
-        ("OwnerIdentity", "ReactNative")
-        ("AppIdentity", [(appName ?: @"unknown") UTF8String])
-        ("DeviceIdentity", [(deviceName ?: @"unknown") UTF8String])
-        ("UseCustomJSC", (bool)useCustomJSC)
-  #if RCT_PROFILE
-        ("StartSamplingProfilerOnInit", (bool)self.devSettings.startSamplingProfilerOnLaunch)
-  #endif
-      ));
+      executorFactory = std::make_shared<JSIExecutorFactory>(
+          makeJSCRuntime(),
+          [](const std::string &message, unsigned int logLevel) {
+              _RCTLogJavaScriptInternal(
+                  static_cast<RCTLogLevel>(logLevel),
+                  [NSString stringWithUTF8String:message.c_str()]);
+          }, nullptr);
     }
   } else {
     id<RCTJavaScriptExecutor> objcExecutor = [self moduleForClass:self.executorClass];
@@ -386,7 +365,9 @@ - (void)start
   } onProgress:^(RCTLoadingProgress *progressData) {
 #if RCT_DEV && __has_include("RCTDevLoadingView.h")
     if ([[self devSettings] isDevModeEnabled]) { // TODO(OSS Candidate ISS#2710739)
-      RCTDevLoadingView *loadingView = [weakSelf moduleForClass:[RCTDevLoadingView class]];
+      // Note: RCTDevLoadingView should have been loaded at this point, so no need to allow lazy loading.
+      RCTDevLoadingView *loadingView = [weakSelf moduleForName:RCTBridgeModuleNameForClass([RCTDevLoadingView class])
+                                        lazilyLoadIfNecessary:NO];
       [loadingView updateProgress:progressData];
     } // TODO(OSS Candidate ISS#2710739)
 #endif
@@ -469,24 +450,41 @@ - (id)moduleForName:(NSString *)moduleName
   return _moduleDataByName[moduleName].instance;
 }
 
+- (id)moduleForName:(NSString *)moduleName lazilyLoadIfNecessary:(BOOL)lazilyLoad
+{
+  if (!lazilyLoad) {
+    return [self moduleForName:moduleName];
+  }
+
+  RCTModuleData *moduleData = _moduleDataByName[moduleName];
+  if (moduleData) {
+    return moduleData.instance;
+  }
+
+  // Module may not be loaded yet, so attempt to force load it here.
+  const BOOL result = [self.delegate respondsToSelector:@selector(bridge:didNotFindModule:)] &&
+    [self.delegate bridge:self didNotFindModule:moduleName];
+  if (result) {
+    // Try again.
+    moduleData = _moduleDataByName[moduleName];
+  } else {
+    RCTLogError(@"Unable to find module for %@", moduleName);
+  }
+
+  return moduleData.instance;
+}
+
 - (BOOL)moduleIsInitialized:(Class)moduleClass
 {
   return _moduleDataByName[RCTBridgeModuleNameForClass(moduleClass)].hasInstance;
 }
 
-- (id)jsBoundExtraModuleForClass:(Class)moduleClass
+- (id)moduleForClass:(Class)moduleClass
 {
-  if ([self.delegate conformsToProtocol:@protocol(RCTCxxBridgeDelegate)]) {
-    id<RCTCxxBridgeDelegate> cxxDelegate = (id<RCTCxxBridgeDelegate>) self.delegate;
-    if ([cxxDelegate respondsToSelector:@selector(jsBoundExtraModuleForClass:)]) {
-      return [cxxDelegate jsBoundExtraModuleForClass:moduleClass];
-    }
-  }
-
-  return nil;
+  return [self moduleForName:RCTBridgeModuleNameForClass(moduleClass) lazilyLoadIfNecessary:YES];
 }
 
-- (std::shared_ptr<ModuleRegistry>)_buildModuleRegistry
+- (std::shared_ptr<ModuleRegistry>)_buildModuleRegistryUnlocked
 {
   if (!self.valid) {
     return {};
@@ -535,13 +533,7 @@ - (void)_initializeBridge:(std::shared_ptr<JSExecutorFactory>)executorFactory
     } // TODO(OSS Candidate ISS#2710739)
 #endif
 
-    // This is async, but any calls into JS are blocked by the m_syncReady CV in Instance
-    _reactInstance->initializeBridge(
-      std::make_unique<RCTInstanceCallback>(self),
-      nullptr,  // use default executor delegate // TODO(OSS Candidate ISS#2710739)
-      executorFactory,
-      _jsMessageThread,
-      [self _buildModuleRegistry]);
+    [self _initializeBridgeLocked:executorFactory];
 
 #if RCT_PROFILE
     if (RCTProfileIsProfiling()) {
@@ -550,14 +542,33 @@ - (void)_initializeBridge:(std::shared_ptr<JSExecutorFactory>)executorFactory
         std::make_unique<JSBigStdString>("true"));
     }
 #endif
-
-    [self installExtraJSBinding];
   }
 
   RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
 }
 
+- (void)_initializeBridgeLocked:(std::shared_ptr<JSExecutorFactory>)executorFactory
+{
+  std::lock_guard<std::mutex> guard(_moduleRegistryLock);
+
+    // This is async, but any calls into JS are blocked by the m_syncReady CV in Instance
+  _reactInstance->initializeBridge(
+      std::make_unique<RCTInstanceCallback>(self),
+      nullptr,  // use default executor delegate // TODO(OSS Candidate ISS#2710739)
+      executorFactory,
+      _jsMessageThread,
+      [self _buildModuleRegistryUnlocked]);
+
+   _moduleRegistryCreated = YES;
+}
+
 - (NSArray<RCTModuleData *> *)registerModulesForClasses:(NSArray<Class> *)moduleClasses
+{
+  return [self _registerModulesForClasses:moduleClasses lazilyDiscovered:NO];
+}
+
+- (NSArray<RCTModuleData *> *)_registerModulesForClasses:(NSArray<Class> *)moduleClasses
+                                        lazilyDiscovered:(BOOL)lazilyDiscovered
 {
   RCT_PROFILE_BEGIN_EVENT(RCTProfileTagAlways,
                           @"-[RCTCxxBridge initModulesWithDispatchGroup:] autoexported moduleData", nil);
@@ -565,12 +576,15 @@ - (void)_initializeBridge:(std::shared_ptr<JSExecutorFactory>)executorFactory
   NSArray *moduleClassesCopy = [moduleClasses copy];
   NSMutableArray<RCTModuleData *> *moduleDataByID = [NSMutableArray arrayWithCapacity:moduleClassesCopy.count];
   for (Class moduleClass in moduleClassesCopy) {
+    if (RCTTurboModuleEnabled() && [moduleClass conformsToProtocol:@protocol(RCTTurboModule)]) {
+      continue;
+    }
     NSString *moduleName = RCTBridgeModuleNameForClass(moduleClass);
 
     // Check for module name collisions
     RCTModuleData *moduleData = _moduleDataByName[moduleName];
     if (moduleData) {
-      if (moduleData.hasInstance) {
+      if (moduleData.hasInstance || lazilyDiscovered) {
         // Existing module was preregistered, so it takes precedence
         continue;
       } else if ([moduleClass new] == nil) {
@@ -647,27 +661,64 @@ - (void)registerExtraModules
   RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
 }
 
-- (void)installExtraJSBinding
+- (void)registerExtraLazyModules
 {
-  if ([self.delegate conformsToProtocol:@protocol(RCTCxxBridgeDelegate)]) {
-    id<RCTCxxBridgeDelegate> cxxDelegate = (id<RCTCxxBridgeDelegate>) self.delegate;
-    if ([cxxDelegate respondsToSelector:@selector(installExtraJSBinding:)]) {
-      [cxxDelegate installExtraJSBinding:self.jsContextRef];
+#if RCT_DEBUG
+  // This is debug-only and only when Chrome is attached, since it expects all modules to be already
+  // available on start up. Otherwise, we can let the lazy module discovery to load them on demand.
+  Class executorClass = [_parentBridge executorClass];
+  if (executorClass && [NSStringFromClass(executorClass) isEqualToString:@"RCTWebSocketExecutor"]) {
+    NSDictionary<NSString *, Class> *moduleClasses = nil;
+    if ([self.delegate respondsToSelector:@selector(extraLazyModuleClassesForBridge:)]) {
+      moduleClasses = [self.delegate extraLazyModuleClassesForBridge:_parentBridge];
+    }
+
+    if (!moduleClasses) {
+      return;
+    }
+
+    // This logic is mostly copied from `registerModulesForClasses:`, but with one difference:
+    // we must use the names provided by the delegate method here.
+    for (NSString *moduleName in moduleClasses) {
+      Class moduleClass = moduleClasses[moduleName];
+      if (RCTTurboModuleEnabled() && [moduleClass conformsToProtocol:@protocol(RCTTurboModule)]) {
+        continue;
+      }
+
+      // Check for module name collisions
+      RCTModuleData *moduleData = _moduleDataByName[moduleName];
+      if (moduleData) {
+        if (moduleData.hasInstance) {
+          // Existing module was preregistered, so it takes precedence
+          continue;
+        } else if ([moduleClass new] == nil) {
+          // The new module returned nil from init, so use the old module
+          continue;
+        } else if ([moduleData.moduleClass new] != nil) {
+          // Use existing module since it was already loaded but not yet instantiated.
+          continue;
+        }
+      }
+
+      moduleData = [[RCTModuleData alloc] initWithModuleClass:moduleClass bridge:self];
+
+      _moduleDataByName[moduleName] = moduleData;
+      [_moduleClassesByID addObject:moduleClass];
+      [_moduleDataByID addObject:moduleData];
     }
   }
+#endif
 }
 
 - (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules
                                withDispatchGroup:(dispatch_group_t)dispatchGroup
                                 lazilyDiscovered:(BOOL)lazilyDiscovered
 {
-  RCTAssert(!(RCTIsMainQueue() && lazilyDiscovered), @"Lazy discovery can only happen off the Main Queue");
-
   // Set up moduleData for automatically-exported modules
-  NSArray<RCTModuleData *> *moduleDataById = [self registerModulesForClasses:modules];
+  NSArray<RCTModuleData *> *moduleDataById = [self _registerModulesForClasses:modules lazilyDiscovered:lazilyDiscovered];
 
-#ifdef RCT_DEBUG
   if (lazilyDiscovered) {
+#if RCT_DEBUG
     // Lazily discovered modules do not require instantiation here,
     // as they are not allowed to have pre-instantiated instance
     // and must not require the main queue.
@@ -675,10 +726,8 @@ - (void)installExtraJSBinding
       RCTAssert(!(moduleData.requiresMainQueueSetup || moduleData.hasInstance),
         @"Module \'%@\' requires initialization on the Main Queue or has pre-instantiated, which is not supported for the lazily discovered modules.", moduleData.name);
     }
-  }
-  else
 #endif
-  {
+  } else {
     RCT_PROFILE_BEGIN_EVENT(RCTProfileTagAlways,
                             @"-[RCTCxxBridge initModulesWithDispatchGroup:] moduleData.hasInstance", nil);
     // Dispatch module init onto main thread for those modules that require it
@@ -715,9 +764,13 @@ - (void)installExtraJSBinding
 
 - (void)registerAdditionalModuleClasses:(NSArray<Class> *)modules
 {
-  NSArray<RCTModuleData *> *newModules = [self _initializeModules:modules withDispatchGroup:NULL lazilyDiscovered:YES];
-  if (_reactInstance) {
+  std::lock_guard<std::mutex> guard(_moduleRegistryLock);
+  if (_moduleRegistryCreated) {
+    NSArray<RCTModuleData *> *newModules = [self _initializeModules:modules withDispatchGroup:NULL lazilyDiscovered:YES];
+    assert(_reactInstance); // at this point you must have reactInstance as you already called reactInstance->initialzeBridge
     _reactInstance->getModuleRegistry().registerModules(createNativeModules(newModules, self, _reactInstance));
+  } else {
+    [self registerModulesForClasses:modules];
   }
 }
 
@@ -859,6 +912,7 @@ - (void)handleError:(NSError *)error
 
   _loading = NO;
   _valid = NO;
+  _moduleRegistryCreated = NO;
 
   dispatch_async(dispatch_get_main_queue(), ^{
     if (self->_jsMessageThread) {
@@ -955,6 +1009,7 @@ - (void)invalidate
   _loading = NO;
   _valid = NO;
   _didInvalidate = YES;
+  _moduleRegistryCreated = NO;
 
   if ([RCTBridge currentBridge] == self) {
     [RCTBridge setCurrentBridge:nil];
@@ -1279,6 +1334,10 @@ - (void)stopProfiling:(void (^)(NSData *))callback
       NSData *logData = [log dataUsingEncoding:NSUTF8StringEncoding];
       callback(logData);
       #if WITH_FBSYSTRACE
+      if (![RCTFBSystrace verifyTraceSize:logData.length]) {
+        RCTLogWarn(@"Your FBSystrace trace might be truncated, try to bump up the buffer size"
+                   " in RCTFBSystrace.m or capture a shorter trace");
+      }
       [RCTFBSystrace unregisterCallbacks];
       #endif
     });
@@ -1290,4 +1349,13 @@ - (BOOL)isBatchActive
   return _wasBatchActive;
 }
 
+- (void *)runtime
+{
+  if (!_reactInstance) {
+    return nullptr;
+  }
+
+  return _reactInstance->getJavaScriptContext();
+}
+
 @end
diff --git a/React/CxxBridge/RCTCxxBridgeDelegate.h b/React/CxxBridge/RCTCxxBridgeDelegate.h
index cbb56b75a85121..cc75608b0ac2fd 100644
--- a/React/CxxBridge/RCTCxxBridgeDelegate.h
+++ b/React/CxxBridge/RCTCxxBridgeDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,7 +8,6 @@
 #include <memory>
 
 #import <React/RCTBridgeDelegate.h>
-#import <jschelpers/JavaScriptCore.h>
 
 namespace facebook {
 namespace react {
@@ -26,21 +25,9 @@ class JSExecutorFactory;
 /**
  * In the RCTCxxBridge, if this method is implemented, return a
  * ExecutorFactory instance which can be used to create the executor.
- * If not implemented, or returns an empty pointer, JSCExecutorFactory
- * will be used.
+ * If not implemented, or returns an empty pointer, JSIExecutorFactory
+ * will be used with a JSCRuntime.
  */
 - (std::unique_ptr<facebook::react::JSExecutorFactory>)jsExecutorFactoryForBridge:(RCTBridge *)bridge;
 
-@optional
-
-/**
- * Experimental: Perform installation of extra JS binding on the given JS context, as appropriate.
- */
-- (void)installExtraJSBinding:(JSGlobalContextRef)jsContextRef;
-
-/**
- * Experimental: Get the instance of the extra module/class which gets bound via `installExtraJSBinding:`
- */
-- (id)jsBoundExtraModuleForClass:(Class)moduleClass;
-
 @end
diff --git a/React/CxxBridge/RCTJSCHelpers.h b/React/CxxBridge/RCTJSCHelpers.h
deleted file mode 100644
index b58ccbf58efd6e..00000000000000
--- a/React/CxxBridge/RCTJSCHelpers.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-/**
- * This must be invoked on iOS to set up platform dependencies before
- * creating an instance of JSCExecutor.
- */
-
-void RCTPrepareJSCExecutor();
diff --git a/React/CxxBridge/RCTJSCHelpers.mm b/React/CxxBridge/RCTJSCHelpers.mm
deleted file mode 100644
index a7e7a8a9b723c5..00000000000000
--- a/React/CxxBridge/RCTJSCHelpers.mm
+++ /dev/null
@@ -1,50 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "RCTJSCHelpers.h"
-
-#import <Foundation/Foundation.h>
-
-#import <React/RCTBridge+Private.h>
-#import <React/RCTCxxUtils.h>
-#import <React/RCTLog.h>
-#import <cxxreact/Platform.h>
-#import <jschelpers/Value.h>
-
-using namespace facebook::react;
-
-namespace {
-
-JSValueRef nativeLoggingHook(
-    JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount,
-    const JSValueRef arguments[], JSValueRef *exception) {
-  RCTLogLevel level = RCTLogLevelInfo;
-  if (argumentCount > 1) {
-    level = MAX(level, (RCTLogLevel)Value(ctx, arguments[1]).asNumber());
-  }
-  if (argumentCount > 0) {
-    JSContext *contextObj = contextForGlobalContextRef(JSC_JSContextGetGlobalContext(ctx));
-    JSValue *msg = [JSC_JSValue(ctx) valueWithJSValueRef:arguments[0] inContext:contextObj];
-    _RCTLogJavaScriptInternal(level, [msg toString]);
-  }
-  return Value::makeUndefined(ctx);
-}
-
-JSValueRef nativePerformanceNow(
-    JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount,
-    const JSValueRef arguments[], JSValueRef *exception) {
-  return Value::makeNumber(ctx, CACurrentMediaTime() * 1000);
-}
-
-}
-
-void RCTPrepareJSCExecutor() {
-  ReactMarker::logTaggedMarker = [](const ReactMarker::ReactMarkerId, const char *tag) {};
-  JSCNativeHooks::loggingHook = nativeLoggingHook;
-  JSCNativeHooks::nowHook = nativePerformanceNow;
-  JSCNativeHooks::installPerfHooks = RCTFBQuickPerformanceLoggerConfigureHooks;
-}
diff --git a/React/CxxBridge/RCTMessageThread.h b/React/CxxBridge/RCTMessageThread.h
index d87bb5256f94b7..1e1f8cd28b6f97 100644
--- a/React/CxxBridge/RCTMessageThread.h
+++ b/React/CxxBridge/RCTMessageThread.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxBridge/RCTMessageThread.mm b/React/CxxBridge/RCTMessageThread.mm
index a1214051db35da..5017bbb4e35fdc 100644
--- a/React/CxxBridge/RCTMessageThread.mm
+++ b/React/CxxBridge/RCTMessageThread.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,6 @@
 
 #import <React/RCTCxxUtils.h>
 #import <React/RCTUtils.h>
-#include <jschelpers/JSCHelpers.h>
 
 // A note about the implementation: This class is not used
 // generically.  It's a thin wrapper around a run loop which
diff --git a/React/CxxBridge/RCTObjcExecutor.h b/React/CxxBridge/RCTObjcExecutor.h
index 08a6f922215867..eddb94bf5510d4 100644
--- a/React/CxxBridge/RCTObjcExecutor.h
+++ b/React/CxxBridge/RCTObjcExecutor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxBridge/RCTObjcExecutor.mm b/React/CxxBridge/RCTObjcExecutor.mm
index e60f980332c62a..bd88a7714d8595 100644
--- a/React/CxxBridge/RCTObjcExecutor.mm
+++ b/React/CxxBridge/RCTObjcExecutor.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/DispatchMessageQueueThread.h b/React/CxxModule/DispatchMessageQueueThread.h
index 4c8be7b502c675..5fa1c5caa790f2 100644
--- a/React/CxxModule/DispatchMessageQueueThread.h
+++ b/React/CxxModule/DispatchMessageQueueThread.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTCxxMethod.h b/React/CxxModule/RCTCxxMethod.h
index 3d0d6aa9587e6c..da1ed8a6bed497 100644
--- a/React/CxxModule/RCTCxxMethod.h
+++ b/React/CxxModule/RCTCxxMethod.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTCxxMethod.mm b/React/CxxModule/RCTCxxMethod.mm
index 82ee01dce771cb..2559a9ccac91f3 100644
--- a/React/CxxModule/RCTCxxMethod.mm
+++ b/React/CxxModule/RCTCxxMethod.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTCxxModule.h b/React/CxxModule/RCTCxxModule.h
index 7bce985a57b9e2..f7ed461a1d56dd 100644
--- a/React/CxxModule/RCTCxxModule.h
+++ b/React/CxxModule/RCTCxxModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTCxxModule.mm b/React/CxxModule/RCTCxxModule.mm
index 98cd09860cec05..708fb46e679424 100644
--- a/React/CxxModule/RCTCxxModule.mm
+++ b/React/CxxModule/RCTCxxModule.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTCxxUtils.h b/React/CxxModule/RCTCxxUtils.h
index 5e38a8a3a8e5c7..ac24636e9a1df6 100644
--- a/React/CxxModule/RCTCxxUtils.h
+++ b/React/CxxModule/RCTCxxUtils.h
@@ -1,16 +1,14 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
+#include <functional>
 #include <memory>
 
-#import <JavaScriptCore/JavaScriptCore.h>
-
-#import <cxxreact/JSCExecutor.h>
-#import <jschelpers/JavaScriptCore.h>
+#import <Foundation/Foundation.h>
 
 @class RCTBridge;
 @class RCTModuleData;
@@ -19,19 +17,10 @@ namespace facebook {
 namespace react {
 
 class Instance;
+class NativeModule;
 
 std::vector<std::unique_ptr<NativeModule>> createNativeModules(NSArray<RCTModuleData *> *modules, RCTBridge *bridge, const std::shared_ptr<Instance> &instance);
 
-JSContext *contextForGlobalContextRef(JSGlobalContextRef contextRef);
-
-template<>
-struct JSCValueEncoder<id> {
-  static Value toJSCValue(JSGlobalContextRef ctx, id obj) {
-    JSValue *value = [JSC_JSValue(ctx) valueWithObject:obj inContext:contextForGlobalContextRef(ctx)];
-    return {ctx, [value JSValueRef]};
-  }
-};
-
 NSError *tryAndReturnError(const std::function<void()>& func);
 NSString *deriveSourceURL(NSURL *url);
 
diff --git a/React/CxxModule/RCTCxxUtils.mm b/React/CxxModule/RCTCxxUtils.mm
index 2bc43a37c9710e..72dfa60ce69619 100644
--- a/React/CxxModule/RCTCxxUtils.mm
+++ b/React/CxxModule/RCTCxxUtils.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,7 @@
 #import <React/RCTModuleData.h>
 #import <React/RCTUtils.h>
 #import <cxxreact/CxxNativeModule.h>
-#import <jschelpers/Value.h>
+#import <jsi/jsi.h>
 
 #import "DispatchMessageQueueThread.h"
 #import "RCTCxxModule.h"
@@ -20,6 +20,8 @@
 namespace facebook {
 namespace react {
 
+using facebook::jsi::JSError;
+
 std::vector<std::unique_ptr<NativeModule>> createNativeModules(NSArray<RCTModuleData *> *modules, RCTBridge *bridge, const std::shared_ptr<Instance> &instance)
 {
   std::vector<std::unique_ptr<NativeModule>> nativeModules;
@@ -37,39 +39,14 @@
   return nativeModules;
 }
 
-JSContext *contextForGlobalContextRef(JSGlobalContextRef contextRef)
-{
-  static std::mutex s_mutex;
-  static NSMapTable *s_contextCache;
-
-  if (!contextRef) {
-    return nil;
-  }
-
-  // Adding our own lock here, since JSC internal ones are insufficient
-  std::lock_guard<std::mutex> lock(s_mutex);
-  if (!s_contextCache) {
-    NSPointerFunctionsOptions keyOptions = NSPointerFunctionsOpaqueMemory | NSPointerFunctionsOpaquePersonality;
-    NSPointerFunctionsOptions valueOptions = NSPointerFunctionsWeakMemory | NSPointerFunctionsObjectPersonality;
-    s_contextCache = [[NSMapTable alloc] initWithKeyOptions:keyOptions valueOptions:valueOptions capacity:0];
-  }
-
-  JSContext *ctx = [s_contextCache objectForKey:(__bridge id)contextRef];
-  if (!ctx) {
-    ctx = [JSC_JSContext(contextRef) contextWithJSGlobalContextRef:contextRef];
-    [s_contextCache setObject:ctx forKey:(__bridge id)contextRef];
-  }
-  return ctx;
-}
-
 static NSError *errorWithException(const std::exception &e)
 {
   NSString *msg = @(e.what());
   NSMutableDictionary *errorInfo = [NSMutableDictionary dictionary];
 
-  const JSException *jsException = dynamic_cast<const JSException*>(&e);
-  if (jsException) {
-    errorInfo[RCTJSRawStackTraceKey] = @(jsException->getStack().c_str());
+  const auto *jsError = dynamic_cast<const JSError*>(&e);
+  if (jsError) {
+    errorInfo[RCTJSRawStackTraceKey] = @(jsError->getStack().c_str());
     msg = [@"Unhandled JS Exception: " stringByAppendingString:msg];
   }
 
diff --git a/React/CxxModule/RCTNativeModule.h b/React/CxxModule/RCTNativeModule.h
index 76e9e406575396..de876cab4cb167 100644
--- a/React/CxxModule/RCTNativeModule.h
+++ b/React/CxxModule/RCTNativeModule.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxModule/RCTNativeModule.mm b/React/CxxModule/RCTNativeModule.mm
index 00a03b37d9759a..5d4a2b8736e912 100644
--- a/React/CxxModule/RCTNativeModule.mm
+++ b/React/CxxModule/RCTNativeModule.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxUtils/RCTFollyConvert.h b/React/CxxUtils/RCTFollyConvert.h
index 589b688da8d9a6..2821bd8557ef22 100644
--- a/React/CxxUtils/RCTFollyConvert.h
+++ b/React/CxxUtils/RCTFollyConvert.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/CxxUtils/RCTFollyConvert.mm b/React/CxxUtils/RCTFollyConvert.mm
index 0c6e08bb568939..2e3ec327dd9481 100644
--- a/React/CxxUtils/RCTFollyConvert.mm
+++ b/React/CxxUtils/RCTFollyConvert.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTDevLoadingView.h b/React/DevSupport/RCTDevLoadingView.h
index 8e9d62334937fb..be39b14ab5b4ed 100644
--- a/React/DevSupport/RCTDevLoadingView.h
+++ b/React/DevSupport/RCTDevLoadingView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTDevLoadingView.m b/React/DevSupport/RCTDevLoadingView.m
index 5899622fcd7333..1c45005fb04fad 100644
--- a/React/DevSupport/RCTDevLoadingView.m
+++ b/React/DevSupport/RCTDevLoadingView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTDevMenu.h b/React/DevSupport/RCTDevMenu.h
index a3088ab5e481a2..603b442f71bb1c 100644
--- a/React/DevSupport/RCTDevMenu.h
+++ b/React/DevSupport/RCTDevMenu.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTDevMenu.m b/React/DevSupport/RCTDevMenu.m
index 711bcb3dfb6a46..12b7592153e72f 100644
--- a/React/DevSupport/RCTDevMenu.m
+++ b/React/DevSupport/RCTDevMenu.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -318,12 +318,6 @@ - (void)addItem:(RCTDevMenuItem *)item
     }]];
   }
 
-  if (devSettings.isJSCSamplingProfilerAvailable) {
-    [items addObject:[RCTDevMenuItem buttonItemWithTitle:@"Start / Stop JS Sampling Profiler" handler:^{
-      [devSettings toggleJSCSamplingProfiler];
-    }]];
-  }
-
   [items addObject:[RCTDevMenuItem buttonItemWithTitleBlock:^NSString *{
     return @"Toggle Inspector";
   } handler:^{
diff --git a/React/DevSupport/RCTInspectorDevServerHelper.h b/React/DevSupport/RCTInspectorDevServerHelper.h
index 6b8425e140b3cf..cb6ca53358d28a 100644
--- a/React/DevSupport/RCTInspectorDevServerHelper.h
+++ b/React/DevSupport/RCTInspectorDevServerHelper.h
@@ -1,12 +1,10 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #import <Foundation/Foundation.h>
-#import <JavaScriptCore/JSBase.h>
 #import <React/RCTUIKit.h> // TODO(macOS ISS#2323203)
-
 #import <React/RCTDefines.h>
 #import <React/RCTInspectorPackagerConnection.h>
 
diff --git a/React/DevSupport/RCTInspectorDevServerHelper.mm b/React/DevSupport/RCTInspectorDevServerHelper.mm
index c798c4f509eb4b..f05d8a53965464 100644
--- a/React/DevSupport/RCTInspectorDevServerHelper.mm
+++ b/React/DevSupport/RCTInspectorDevServerHelper.mm
@@ -1,16 +1,18 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 #import "RCTInspectorDevServerHelper.h"
 
 #if RCT_DEV
 
-#import <jschelpers/JSCWrapper.h>
 #import <React/RCTUIKit.h> // TODO(macOS ISS#2323203)
 #import <React/RCTLog.h>
 
 #import "RCTDefines.h"
 #import "RCTInspectorPackagerConnection.h"
 
-using namespace facebook::react;
-
 static NSString *const kDebuggerMsgDisable = @"{ \"id\":1,\"method\":\"Debugger.disable\" }";
 
 static NSString *getServerHost(NSURL *bundleURL, NSNumber *port)
diff --git a/React/DevSupport/RCTPackagerClient.h b/React/DevSupport/RCTPackagerClient.h
index 230d685f4e2a11..e0877bbbc0b362 100644
--- a/React/DevSupport/RCTPackagerClient.h
+++ b/React/DevSupport/RCTPackagerClient.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTPackagerClient.m b/React/DevSupport/RCTPackagerClient.m
index a15c01fbe5f3da..66c086f39183f8 100644
--- a/React/DevSupport/RCTPackagerClient.m
+++ b/React/DevSupport/RCTPackagerClient.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTPackagerConnection.h b/React/DevSupport/RCTPackagerConnection.h
index ed3f464b6bdfff..67832ca91808f1 100644
--- a/React/DevSupport/RCTPackagerConnection.h
+++ b/React/DevSupport/RCTPackagerConnection.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/DevSupport/RCTPackagerConnection.mm b/React/DevSupport/RCTPackagerConnection.mm
index 10fbca844e3fd0..de9ab999b10bc8 100644
--- a/React/DevSupport/RCTPackagerConnection.mm
+++ b/React/DevSupport/RCTPackagerConnection.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.h b/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.h
index a1af3f7679d941..d7534d944251ce 100644
--- a/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.mm b/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.mm
index 2e883cb0c9cb5d..257aaee235e494 100644
--- a/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/ActivityIndicator/RCTActivityIndicatorViewComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #import "RCTActivityIndicatorViewComponentView.h"
 
-#import <fabric/components/activityindicator/ActivityIndicatorViewProps.h>
+#import <react/components/activityindicator/ActivityIndicatorViewProps.h>
 
 using namespace facebook::react;
 
@@ -27,19 +27,20 @@ @implementation RCTActivityIndicatorViewComponentView {
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const ActivityIndicatorViewProps>();
+    _props = defaultProps;
+
     _activityIndicatorView = [[UIActivityIndicatorView alloc] initWithFrame:self.bounds];
     _activityIndicatorView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
 
-    const auto &defaultProps = ActivityIndicatorViewProps();
-
-    if (defaultProps.animating) {
+    if (defaultProps->animating) {
       [_activityIndicatorView startAnimating];
     } else {
       [_activityIndicatorView stopAnimating];
     }
-    _activityIndicatorView.color = [UIColor colorWithCGColor:defaultProps.color.get()];
-    _activityIndicatorView.hidesWhenStopped = defaultProps.hidesWhenStopped;
-    _activityIndicatorView.activityIndicatorViewStyle = convertActivityIndicatorViewStyle(defaultProps.size);
+    _activityIndicatorView.color = [UIColor colorWithCGColor:defaultProps->color.get()];
+    _activityIndicatorView.hidesWhenStopped = defaultProps->hidesWhenStopped;
+    _activityIndicatorView.activityIndicatorViewStyle = convertActivityIndicatorViewStyle(defaultProps->size);
 
     [self addSubview:_activityIndicatorView];
   }
@@ -49,16 +50,11 @@ - (instancetype)initWithFrame:(CGRect)frame
 
 - (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
 {
-  if (!oldProps) {
-    oldProps = _props ?: std::make_shared<ActivityIndicatorViewProps>();
-  }
-  _props = props;
+  const auto &oldViewProps = *std::static_pointer_cast<const ActivityIndicatorViewProps>(oldProps ?: _props);
+  const auto &newViewProps = *std::static_pointer_cast<const ActivityIndicatorViewProps>(props);
 
   [super updateProps:props oldProps:oldProps];
 
-  auto oldViewProps = *std::dynamic_pointer_cast<const ActivityIndicatorViewProps>(oldProps);
-  auto newViewProps = *std::dynamic_pointer_cast<const ActivityIndicatorViewProps>(props);
-
   if (oldViewProps.animating != newViewProps.animating) {
     if (newViewProps.animating) {
       [_activityIndicatorView startAnimating];
diff --git a/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.h b/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.h
index a9bcf7d392b93f..ebeea523d24f59 100644
--- a/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.mm b/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.mm
index cb8dcd7fc0ecd0..38d1dbb4f86421 100644
--- a/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/Image/RCTImageComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,12 @@
 
 #import "RCTImageComponentView.h"
 
-#import <fabric/components/image/ImageEventEmitter.h>
-#import <fabric/components/image/ImageLocalData.h>
-#import <fabric/components/image/ImageProps.h>
-#import <fabric/imagemanager/ImageRequest.h>
-#import <fabric/imagemanager/ImageResponse.h>
-#import <fabric/imagemanager/RCTImagePrimitivesConversions.h>
+#import <react/components/image/ImageEventEmitter.h>
+#import <react/components/image/ImageLocalData.h>
+#import <react/components/image/ImageProps.h>
+#import <react/imagemanager/ImageRequest.h>
+#import <react/imagemanager/ImageResponse.h>
+#import <react/imagemanager/RCTImagePrimitivesConversions.h>
 
 #import "RCTConversions.h"
 #import "MainQueueExecutor.h"
@@ -27,11 +27,13 @@ @implementation RCTImageComponentView {
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const ImageProps>();
+    _props = defaultProps;
+
     _imageView = [[UIImageView alloc] initWithFrame:self.bounds];
     _imageView.clipsToBounds = YES;
 
-    auto defaultProps = ImageProps();
-    _imageView.contentMode = (UIViewContentMode)RCTResizeModeFromImageResizeMode(defaultProps.resizeMode);
+    _imageView.contentMode = (UIViewContentMode)RCTResizeModeFromImageResizeMode(defaultProps->resizeMode);
 
     self.contentView = _imageView;
   }
@@ -43,16 +45,11 @@ - (instancetype)initWithFrame:(CGRect)frame
 
 - (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
 {
-  if (!oldProps) {
-    oldProps = _props ?: std::make_shared<const ImageProps>();
-  }
-  _props = props;
+  const auto &oldImageProps = *std::static_pointer_cast<const ImageProps>(oldProps ?: _props);
+  const auto &newImageProps = *std::static_pointer_cast<const ImageProps>(props);
 
   [super updateProps:props oldProps:oldProps];
 
-  const auto &oldImageProps = *std::dynamic_pointer_cast<const ImageProps>(oldProps);
-  const auto &newImageProps = *std::dynamic_pointer_cast<const ImageProps>(props);
-
   // `resizeMode`
   if (oldImageProps.resizeMode != newImageProps.resizeMode) {
     if (newImageProps.resizeMode == ImageResizeMode::Repeat) {
@@ -76,8 +73,8 @@ - (void)updateLocalData:(SharedLocalData)localData
   _imageLocalData = std::static_pointer_cast<const ImageLocalData>(localData);
   assert(_imageLocalData);
   auto future = _imageLocalData->getImageRequest().getResponseFuture();
-  future.via(&MainQueueExecutor::instance()).then([self](ImageResponse &&imageResponse) {
-    self.image = (__bridge_transfer UIImage *)imageResponse.getImage().get();
+  future.via(&MainQueueExecutor::instance()).thenValue([self](ImageResponse &&imageResponse) {
+    self.image = (__bridge UIImage *)imageResponse.getImage().get();
   });
 }
 
@@ -85,6 +82,7 @@ - (void)prepareForRecycle
 {
   [super prepareForRecycle];
   _imageView.image = nil;
+  _imageLocalData.reset();
 }
 
 #pragma mark - Other
diff --git a/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.h b/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.h
index 687d4f73a72ba7..ef647bc1555e39 100644
--- a/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.mm b/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.mm
index 703c03e5ddfe5d..4f1acc37225947 100644
--- a/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/Root/RCTRootComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,20 @@
 
 #import "RCTRootComponentView.h"
 
+#import <react/components/root/RootProps.h>
+
+using namespace facebook::react;
+
 @implementation RCTRootComponentView
 
+- (instancetype)initWithFrame:(CGRect)frame
+{
+  if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const RootProps>();
+    _props = defaultProps;
+  }
+
+  return self;
+}
+
 @end
diff --git a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
index f2e954db6a0806..8416d2b902dd4b 100644
--- a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
+++ b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.mm b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.mm
index 62ecd203d9862e..eab20fea9939b0 100644
--- a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.mm
+++ b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.h b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.h
index b031d6d760b85b..5840a9d3d36fe4 100644
--- a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm
index 018f45b834e817..fe627377288b01 100644
--- a/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,10 +8,10 @@
 #import "RCTScrollViewComponentView.h"
 
 #import <React/RCTAssert.h>
-#import <fabric/components/scrollview/ScrollViewLocalData.h>
-#import <fabric/components/scrollview/ScrollViewProps.h>
-#import <fabric/components/scrollview/ScrollViewEventEmitter.h>
-#import <fabric/graphics/Geometry.h>
+#import <react/components/scrollview/ScrollViewLocalData.h>
+#import <react/components/scrollview/ScrollViewProps.h>
+#import <react/components/scrollview/ScrollViewEventEmitter.h>
+#import <react/graphics/Geometry.h>
 
 #import "RCTConversions.h"
 #import "RCTEnhancedScrollView.h"
@@ -33,6 +33,9 @@ @implementation RCTScrollViewComponentView {
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const ScrollViewProps>();
+    _props = defaultProps;
+
     _scrollView = [[RCTEnhancedScrollView alloc] initWithFrame:self.bounds];
     _scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
     _scrollView.delegate = self;
@@ -49,15 +52,10 @@ - (instancetype)initWithFrame:(CGRect)frame
 
 - (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
 {
-  [super updateProps:props oldProps:oldProps];
+  const auto &oldScrollViewProps = *std::static_pointer_cast<const ScrollViewProps>(oldProps ?: _props);
+  const auto &newScrollViewProps = *std::static_pointer_cast<const ScrollViewProps>(props);
 
-  if (!oldProps) {
-    oldProps = _props ?: std::make_shared<ScrollViewProps>();
-  }
-  _props = props;
-
-  auto oldScrollViewProps = *std::dynamic_pointer_cast<const ScrollViewProps>(oldProps);
-  auto newScrollViewProps = *std::dynamic_pointer_cast<const ScrollViewProps>(props);
+  [super updateProps:props oldProps:oldProps];
 
 #define REMAP_PROP(reactName, localName, target) \
   if (oldScrollViewProps.reactName != newScrollViewProps.reactName) { \
diff --git a/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.h b/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.h
index 470a3e7e0ee22f..b18ea4b2148627 100644
--- a/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.mm b/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.mm
index f58ac227c43009..5ff9be5e7c21ec 100644
--- a/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/Switch/RCTSwitchComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #import "RCTSwitchComponentView.h"
 
-#import <fabric/components/switch/SwitchEventEmitter.h>
-#import <fabric/components/switch/SwitchProps.h>
+#import <react/components/switch/SwitchEventEmitter.h>
+#import <react/components/switch/SwitchProps.h>
 
 using namespace facebook::react;
 
@@ -20,15 +20,16 @@ @implementation RCTSwitchComponentView {
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const SwitchProps>();
+    _props = defaultProps;
+
     _switchView = [[UISwitch alloc] initWithFrame:self.bounds];
 
     [_switchView addTarget:self
-                 action:@selector(onChange:)
-       forControlEvents:UIControlEventValueChanged];
-
-    const auto &defaultProps = SwitchProps();
+                    action:@selector(onChange:)
+          forControlEvents:UIControlEventValueChanged];
 
-    _switchView.on = defaultProps.value;
+    _switchView.on = defaultProps->value;
 
     self.contentView = _switchView;
   }
@@ -38,16 +39,11 @@ - (instancetype)initWithFrame:(CGRect)frame
 
 - (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
 {
-  if (!oldProps) {
-    oldProps = _props ?: std::make_shared<SwitchProps>();
-  }
-  _props = props;
+  const auto &oldSwitchProps = *std::static_pointer_cast<const SwitchProps>(oldProps ?: _props);
+  const auto &newSwitchProps = *std::static_pointer_cast<const SwitchProps>(props);
 
   [super updateProps:props oldProps:oldProps];
 
-  auto oldSwitchProps = *std::dynamic_pointer_cast<const SwitchProps>(oldProps);
-  auto newSwitchProps = *std::dynamic_pointer_cast<const SwitchProps>(props);
-
   // `value`
   if (oldSwitchProps.value != newSwitchProps.value) {
     _switchView.on = newSwitchProps.value;
diff --git a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.h b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.h
index 92700da77d642c..9e9573a58f3495 100644
--- a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.mm b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.mm
index d9e55caf1e7da5..5d58241d6a5ddf 100644
--- a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,12 @@
 
 #import "RCTParagraphComponentView.h"
 
-#import <fabric/components/text/ParagraphLocalData.h>
-#import <fabric/components/text/ParagraphProps.h>
-#import <fabric/core/LocalData.h>
-#import <fabric/graphics/Geometry.h>
-#import <fabric/textlayoutmanager/TextLayoutManager.h>
-#import <fabric/textlayoutmanager/RCTTextLayoutManager.h>
+#import <react/components/text/ParagraphLocalData.h>
+#import <react/components/text/ParagraphProps.h>
+#import <react/core/LocalData.h>
+#import <react/graphics/Geometry.h>
+#import <react/textlayoutmanager/TextLayoutManager.h>
+#import <react/textlayoutmanager/RCTTextLayoutManager.h>
 #import "RCTConversions.h"
 
 using namespace facebook::react;
@@ -25,6 +25,9 @@ @implementation RCTParagraphComponentView {
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const ParagraphProps>();
+    _props = defaultProps;
+
     self.isAccessibilityElement = YES;
     self.accessibilityTraits |= UIAccessibilityTraitStaticText;
     self.opaque = NO;
@@ -36,8 +39,10 @@ - (instancetype)initWithFrame:(CGRect)frame
 
 - (void)updateProps:(SharedProps)props oldProps:(SharedProps)oldProps
 {
+  const auto &paragraphProps = std::static_pointer_cast<const ParagraphProps>(props);
+
   [super updateProps:props oldProps:oldProps];
-  auto paragraphProps = std::static_pointer_cast<const ParagraphProps>(props);
+
   assert(paragraphProps);
   _paragraphAttributes = paragraphProps->paragraphAttributes;
 }
@@ -72,7 +77,8 @@ - (void)drawRect:(CGRect)rect
 
 - (NSString *)accessibilityLabel
 {
-  NSString *superAccessibilityLabel = [super accessibilityLabel];
+  NSString *superAccessibilityLabel =
+    RCTNSStringFromStringNilIfEmpty(_props->accessibilityLabel);
   if (superAccessibilityLabel) {
     return superAccessibilityLabel;
   }
@@ -84,4 +90,28 @@ - (NSString *)accessibilityLabel
   return RCTNSStringFromString(_paragraphLocalData->getAttributedString().getString());
 }
 
-@end
+- (SharedTouchEventEmitter)touchEventEmitterAtPoint:(CGPoint)point
+{
+  if (!_paragraphLocalData) {
+    return _eventEmitter;
+  }
+
+  SharedTextLayoutManager textLayoutManager = _paragraphLocalData->getTextLayoutManager();
+  RCTTextLayoutManager *nativeTextLayoutManager = (__bridge RCTTextLayoutManager *)textLayoutManager->getNativeTextLayoutManager();
+  CGRect frame = RCTCGRectFromRect(_layoutMetrics.getContentFrame());
+
+  SharedShadowNode textShadowNode = [nativeTextLayoutManager getParentShadowNodeWithAttributeString:_paragraphLocalData->getAttributedString()
+                                                                                paragraphAttributes:_paragraphAttributes
+                                                                                              frame:frame
+                                                                                            atPoint:point];
+
+  if (!textShadowNode) {
+    return _eventEmitter;
+  }
+
+  SharedEventEmitter eventEmitter = textShadowNode->getEventEmitter();
+  assert(std::dynamic_pointer_cast<const TouchEventEmitter>(eventEmitter));
+  return std::static_pointer_cast<const TouchEventEmitter>(eventEmitter);
+}
+
+ @end
diff --git a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
index 9359240bedb1fd..0b8a6dda079bce 100644
--- a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
+++ b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,20 +9,22 @@
 
 #import <React/RCTComponentViewProtocol.h>
 #import <React/UIView+ComponentViewProtocol.h>
-#import <fabric/core/LayoutMetrics.h>
-#import <fabric/core/Props.h>
-#import <fabric/components/view/ViewEventEmitter.h>
-#import <fabric/events/EventEmitter.h>
+#import <react/core/LayoutMetrics.h>
+#import <react/core/Props.h>
+#import <react/components/view/ViewEventEmitter.h>
+#import <react/components/view/ViewProps.h>
+#import <react/events/EventEmitter.h>
+#import <React/RCTTouchableComponentViewProtocol.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
 /**
  * UIView class for <View> component.
  */
-@interface RCTViewComponentView : UIView <RCTComponentViewProtocol> {
+@interface RCTViewComponentView : UIView <RCTComponentViewProtocol, RCTTouchableComponentViewProtocol> {
 @protected
   facebook::react::LayoutMetrics _layoutMetrics;
-  facebook::react::SharedProps _props;
+  facebook::react::SharedViewProps _props;
   facebook::react::SharedViewEventEmitter _eventEmitter;
 }
 
diff --git a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
index 24f924c646ca7d..ce7e4a2c140b5e 100644
--- a/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
+++ b/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,11 @@
 
 #import "RCTViewComponentView.h"
 
-#import <fabric/components/view/ViewProps.h>
-#import <fabric/components/view/ViewEventEmitter.h>
+#import <react/components/view/ViewProps.h>
+#import <react/components/view/ViewEventEmitter.h>
+#import <objc/runtime.h>
+#import <React/RCTAssert.h>
+#import <React/RCTBorderDrawing.h>
 
 #import "RCTConversions.h"
 
@@ -16,7 +19,18 @@
 
 @implementation RCTViewComponentView
 {
-  BOOL _isCoreAnimationBorderRenderingEnabled;
+  UIColor *_backgroundColor;
+  CALayer *_borderLayer;
+}
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+  if (self = [super initWithFrame:frame]) {
+    static const auto defaultProps = std::make_shared<const ViewProps>();
+    _props = defaultProps;
+  }
+
+  return self;
 }
 
 - (void)setContentView:(UIView *)contentView
@@ -36,6 +50,10 @@ - (void)layoutSubviews
 {
   [super layoutSubviews];
 
+  if (_borderLayer) {
+    _borderLayer.frame = self.layer.bounds;
+  }
+
   if (_contentView) {
     _contentView.frame = RCTCGRectFromRect(_layoutMetrics.getContentFrame());
   }
@@ -50,25 +68,49 @@ - (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
   return CGRectContainsPoint(hitFrame, point);
 }
 
+- (UIColor *)backgroundColor
+{
+  return _backgroundColor;
+}
+
+- (void)setBackgroundColor:(UIColor *)backgroundColor
+{
+  _backgroundColor = backgroundColor;
+}
+
 - (void)updateProps:(SharedProps)props
            oldProps:(SharedProps)oldProps
 {
-  if (!oldProps) {
-    oldProps = _props ?: std::make_shared<ViewProps>();
-  }
-  _props = props;
-
-  auto oldViewProps = *std::dynamic_pointer_cast<const ViewProps>(oldProps);
-  auto newViewProps = *std::dynamic_pointer_cast<const ViewProps>(props);
+#ifndef NS_BLOCK_ASSERTIONS
+  auto propsRawPtr = _props.get();
+  RCTAssert(
+    propsRawPtr &&
+    (
+      [self class] == [RCTViewComponentView class] ||
+      typeid(*propsRawPtr).hash_code() != typeid(const ViewProps).hash_code()
+    ),
+    @"`RCTViewComponentView` subclasses (and `%@` particularly) must setup `_props`"
+      " instance variable with a default value in the constructor.", NSStringFromClass([self class])
+  );
+#endif
+
+  const auto &oldViewProps = *std::static_pointer_cast<const ViewProps>(oldProps ?: _props);
+  const auto &newViewProps = *std::static_pointer_cast<const ViewProps>(props);
+
+  _props = std::static_pointer_cast<const ViewProps>(props);
+
+  BOOL needsInvalidateLayer = NO;
 
   // `opacity`
   if (oldViewProps.opacity != newViewProps.opacity) {
     self.layer.opacity = (CGFloat)newViewProps.opacity;
+    needsInvalidateLayer = YES;
   }
 
   // `backgroundColor`
   if (oldViewProps.backgroundColor != newViewProps.backgroundColor) {
-    self.backgroundColor = RCTUIColorFromSharedColor(newViewProps.backgroundColor);
+    _backgroundColor = RCTUIColorFromSharedColor(newViewProps.backgroundColor);
+    needsInvalidateLayer = YES;
   }
 
   // `foregroundColor`
@@ -81,21 +123,25 @@ - (void)updateProps:(SharedProps)props
     CGColorRef shadowColor = RCTCGColorRefFromSharedColor(newViewProps.shadowColor);
     self.layer.shadowColor = shadowColor;
     CGColorRelease(shadowColor);
+    needsInvalidateLayer = YES;
   }
 
   // `shadowOffset`
   if (oldViewProps.shadowOffset != newViewProps.shadowOffset) {
     self.layer.shadowOffset = RCTCGSizeFromSize(newViewProps.shadowOffset);
+    needsInvalidateLayer = YES;
   }
 
   // `shadowOpacity`
   if (oldViewProps.shadowOpacity != newViewProps.shadowOpacity) {
     self.layer.shadowOpacity = (CGFloat)newViewProps.shadowOpacity;
+    needsInvalidateLayer = YES;
   }
 
   // `shadowRadius`
   if (oldViewProps.shadowRadius != newViewProps.shadowRadius) {
     self.layer.shadowRadius = (CGFloat)newViewProps.shadowRadius;
+    needsInvalidateLayer = YES;
   }
 
   // `backfaceVisibility`
@@ -128,6 +174,7 @@ - (void)updateProps:(SharedProps)props
   // `overflow`
   if (oldViewProps.yogaStyle.overflow != newViewProps.yogaStyle.overflow) {
     self.clipsToBounds = newViewProps.yogaStyle.overflow != YGOverflowVisible;
+    needsInvalidateLayer = YES;
   }
 
   // `zIndex`
@@ -137,23 +184,60 @@ - (void)updateProps:(SharedProps)props
 
   // `border`
   if (
-    oldViewProps.borderWidth != newViewProps.borderWidth ||
-    oldViewProps.borderStyle != newViewProps.borderStyle ||
-    oldViewProps.borderRadius != newViewProps.borderRadius ||
-    oldViewProps.borderColor != newViewProps.borderColor
+    oldViewProps.borderStyles != newViewProps.borderStyles ||
+    oldViewProps.borderRadii != newViewProps.borderRadii ||
+    oldViewProps.borderColors != newViewProps.borderColors
   ) {
-    [self invalidateBorder];
+    needsInvalidateLayer = YES;
   }
 
   // `nativeId`
   if (oldViewProps.nativeId != newViewProps.nativeId) {
-    self.nativeId = RCTNSStringFromString(newViewProps.nativeId);
+    self.nativeId = RCTNSStringFromStringNilIfEmpty(newViewProps.nativeId);
   }
 
   // `accessible`
   if (oldViewProps.accessible != newViewProps.accessible) {
     self.accessibilityElement.isAccessibilityElement = newViewProps.accessible;
   }
+
+  // `accessibilityLabel`
+  if (oldViewProps.accessibilityLabel != newViewProps.accessibilityLabel) {
+    self.accessibilityElement.accessibilityLabel = RCTNSStringFromStringNilIfEmpty(newViewProps.accessibilityLabel);
+  }
+
+  // `accessibilityHint`
+  if (oldViewProps.accessibilityHint != newViewProps.accessibilityHint) {
+    self.accessibilityElement.accessibilityHint = RCTNSStringFromStringNilIfEmpty(newViewProps.accessibilityHint);
+  }
+
+  // `accessibilityTraits`
+  if (oldViewProps.accessibilityTraits != newViewProps.accessibilityTraits) {
+    self.accessibilityElement.accessibilityTraits = RCTUIAccessibilityTraitsFromAccessibilityTraits(newViewProps.accessibilityTraits);
+  }
+
+  // `accessibilityViewIsModal`
+  if (oldViewProps.accessibilityViewIsModal != newViewProps.accessibilityViewIsModal) {
+    self.accessibilityElement.accessibilityViewIsModal = newViewProps.accessibilityViewIsModal;
+  }
+
+  // `accessibilityElementsHidden`
+  if (oldViewProps.accessibilityElementsHidden != newViewProps.accessibilityElementsHidden) {
+    self.accessibilityElement.accessibilityElementsHidden = newViewProps.accessibilityElementsHidden;
+  }
+
+  // `accessibilityIgnoresInvertColors`
+  if (oldViewProps.accessibilityIgnoresInvertColors != newViewProps.accessibilityIgnoresInvertColors) {
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
+    if (@available(iOS 11.0, *)) {
+      self.accessibilityIgnoresInvertColors = newViewProps.accessibilityIgnoresInvertColors;
+    }
+#endif
+  }
+
+  if (needsInvalidateLayer) {
+    [self invalidateLayer];
+  }
 }
 
 - (void)updateEventEmitter:(SharedEventEmitter)eventEmitter
@@ -168,35 +252,220 @@ - (void)updateLayoutMetrics:(LayoutMetrics)layoutMetrics
   _layoutMetrics = layoutMetrics;
 
   [super updateLayoutMetrics:layoutMetrics oldLayoutMetrics:oldLayoutMetrics];
+
+  [self invalidateLayer];
+}
+
+- (UIView *)betterHitTest:(CGPoint)point withEvent:(UIEvent *)event
+{
+  // This is a classic textbook implementation of `hitTest:` with a couple of improvements:
+  //   * It takes layers' `zIndex` property into an account;
+  //   * It does not stop algorithm if some touch is outside the view
+  //     which does not have `clipToBounds` enabled.
+
+  if (!self.userInteractionEnabled || self.hidden || self.alpha < 0.01) {
+    return nil;
+  }
+
+  BOOL isPointInside = [self pointInside:point withEvent:event];
+
+  if (self.clipsToBounds && !isPointInside) {
+    return nil;
+  }
+
+  NSArray<__kindof UIView *> *sortedSubviews =
+    [self.subviews sortedArrayUsingComparator:^NSComparisonResult(UIView *a, UIView *b) {
+      // Ensure sorting is stable by treating equal `zIndex` as ascending so
+      // that original order is preserved.
+      return a.layer.zPosition > b.layer.zPosition ? NSOrderedDescending : NSOrderedAscending;
+    }];
+
+  for (UIView *subview in [sortedSubviews reverseObjectEnumerator]) {
+    UIView *hitView = [subview hitTest:[subview convertPoint:point fromView:self] withEvent:event];
+    if (hitView) {
+      return hitView;
+    }
+  }
+
+  return isPointInside ? self : nil;
 }
 
-- (void)invalidateBorder
+- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
 {
-  const auto &props = *std::dynamic_pointer_cast<const ViewProps>(_props);
+  switch (_props->pointerEvents) {
+    case PointerEventsMode::Auto:
+      return [self betterHitTest:point withEvent:event];
+    case PointerEventsMode::None:
+      return nil;
+    case PointerEventsMode::BoxOnly:
+      return [self pointInside:point withEvent:event] ? self : nil;
+    case PointerEventsMode::BoxNone:
+      UIView *view = [self betterHitTest:point withEvent:event];
+      return view != self ? view : nil;
+  }
+}
+
+static RCTCornerRadii RCTCornerRadiiFromBorderRadii(BorderRadii borderRadii) {
+  return RCTCornerRadii {
+    .topLeft = (CGFloat)borderRadii.topLeft,
+    .topRight = (CGFloat)borderRadii.topRight,
+    .bottomLeft = (CGFloat)borderRadii.bottomLeft,
+    .bottomRight = (CGFloat)borderRadii.bottomRight
+  };
+}
 
-  bool useCoreAnimationBorderRendering =
-    props.borderStyle == BorderStyle::Solid &&
-    props.borderWidth.isUniform() &&
-    props.borderRadius.isUniform();
+static RCTBorderColors RCTBorderColorsFromBorderColors(BorderColors borderColors) {
+  return RCTBorderColors {
+    .left = RCTCGColorRefFromSharedColor(borderColors.left),
+    .top = RCTCGColorRefFromSharedColor(borderColors.top),
+    .bottom = RCTCGColorRefFromSharedColor(borderColors.bottom),
+    .right = RCTCGColorRefFromSharedColor(borderColors.right)
+  };
+}
+
+static UIEdgeInsets UIEdgeInsetsFromBorderInsets(EdgeInsets edgeInsets) {
+  return UIEdgeInsets {
+    .left = (CGFloat)edgeInsets.left,
+    .top = (CGFloat)edgeInsets.top,
+    .bottom = (CGFloat)edgeInsets.bottom,
+    .right = (CGFloat)edgeInsets.right
+  };
+}
+
+static RCTBorderStyle RCTBorderStyleFromBorderStyle(BorderStyle borderStyle) {
+  switch (borderStyle) {
+    case BorderStyle::Solid:
+      return RCTBorderStyleSolid;
+    case BorderStyle::Dotted:
+      return RCTBorderStyleDotted;
+    case BorderStyle::Dashed:
+      return RCTBorderStyleDashed;
+  }
+}
+
+- (void)invalidateLayer
+{
+  const auto borderMetrics =
+    _props->resolveBorderMetrics(_layoutMetrics.layoutDirection == LayoutDirection::RightToLeft);
 
   CALayer *layer = self.layer;
-  if (_isCoreAnimationBorderRenderingEnabled != useCoreAnimationBorderRendering) {
-    _isCoreAnimationBorderRenderingEnabled = useCoreAnimationBorderRendering;
-    if (!useCoreAnimationBorderRendering) {
-      layer.borderWidth = 0;
-      layer.borderColor = nil;
-      layer.cornerRadius = 0;
+
+  // Stage 1. Shadow Path
+  BOOL layerHasShadow = layer.shadowOpacity > 0 && CGColorGetAlpha(layer.shadowColor) > 0;
+  if (layerHasShadow) {
+    if (CGColorGetAlpha(_backgroundColor.CGColor) > 0.999) {
+      // If view has a solid background color, calculate shadow path from border.
+      const RCTCornerInsets cornerInsets =
+        RCTGetCornerInsets(RCTCornerRadiiFromBorderRadii(borderMetrics.borderRadii), UIEdgeInsetsZero);
+      CGPathRef shadowPath = RCTPathCreateWithRoundedRect(self.bounds, cornerInsets, nil);
+      layer.shadowPath = shadowPath;
+      CGPathRelease(shadowPath);
+    } else {
+      // Can't accurately calculate box shadow, so fall back to pixel-based shadow.
+      layer.shadowPath = nil;
     }
+  } else {
+    layer.shadowPath = nil;
   }
 
+  // Stage 2. Border Rendering
+  const bool useCoreAnimationBorderRendering =
+    borderMetrics.borderColors.isUniform() &&
+    borderMetrics.borderWidths.isUniform() &&
+    borderMetrics.borderStyles.isUniform() &&
+    borderMetrics.borderRadii.isUniform() &&
+    borderMetrics.borderStyles.left == BorderStyle::Solid &&
+    (
+      // iOS draws borders in front of the content whereas CSS draws them behind
+      // the content. For this reason, only use iOS border drawing when clipping
+      // or when the border is hidden.
+      borderMetrics.borderWidths.left == 0 ||
+      colorComponentsFromColor(borderMetrics.borderColors.left).alpha == 0 ||
+      self.clipsToBounds
+    );
+
   if (useCoreAnimationBorderRendering) {
-    layer.borderWidth = (CGFloat)props.borderWidth.left;
-    layer.borderColor = RCTCGColorRefFromSharedColor(props.borderColor);
-    layer.cornerRadius = (CGFloat)props.borderRadius.topLeft;
-    _contentView.layer.cornerRadius = (CGFloat)props.borderRadius.topLeft;
+    if (_borderLayer) {
+      [_borderLayer removeFromSuperlayer];
+      _borderLayer = nil;
+    }
+
+    layer.borderWidth = (CGFloat)borderMetrics.borderWidths.left;
+    layer.borderColor = RCTCGColorRefFromSharedColor(borderMetrics.borderColors.left);
+    layer.cornerRadius = (CGFloat)borderMetrics.borderRadii.topLeft;
+    layer.backgroundColor = _backgroundColor.CGColor;
+    _contentView.layer.cornerRadius = (CGFloat)borderMetrics.borderRadii.topLeft;
     _contentView.layer.masksToBounds = YES;
   } else {
-    // Not supported yet.
+    if (!_borderLayer) {
+      _borderLayer = [[CALayer alloc] init];
+      _borderLayer.zPosition = -1024.0f;
+      _borderLayer.frame = layer.bounds;
+      _borderLayer.magnificationFilter = kCAFilterNearest;
+      [layer addSublayer:_borderLayer];
+    }
+
+    layer.backgroundColor = nil;
+    layer.borderWidth = 0;
+    layer.borderColor = nil;
+    layer.cornerRadius = 0;
+    _contentView.layer.cornerRadius = 0;
+    _contentView.layer.masksToBounds = NO;
+
+    UIImage *image = RCTGetBorderImage(
+      RCTBorderStyleFromBorderStyle(borderMetrics.borderStyles.left),
+      layer.bounds.size,
+      RCTCornerRadiiFromBorderRadii(borderMetrics.borderRadii),
+      UIEdgeInsetsFromBorderInsets(borderMetrics.borderWidths),
+      RCTBorderColorsFromBorderColors(borderMetrics.borderColors),
+      _backgroundColor.CGColor,
+      self.clipsToBounds
+    );
+
+    if (image == nil) {
+      _borderLayer.contents = nil;
+    } else {
+      CGSize imageSize = image.size;
+      UIEdgeInsets imageCapInsets = image.capInsets;
+      CGRect contentsCenter = CGRect {
+        CGPoint {imageCapInsets.left / imageSize.width, imageCapInsets.top / imageSize.height},
+        CGSize {(CGFloat)1.0 / imageSize.width, (CGFloat)1.0 / imageSize.height}
+      };
+
+      _borderLayer.contents = (id)image.CGImage;
+      _borderLayer.contentsScale = image.scale;
+
+      const BOOL isResizable = !UIEdgeInsetsEqualToEdgeInsets(image.capInsets, UIEdgeInsetsZero);
+      if (isResizable) {
+        _borderLayer.contentsCenter = contentsCenter;
+      } else {
+        _borderLayer.contentsCenter = CGRect { CGPoint {0.0, 0.0}, CGSize {1.0, 1.0}};
+      }
+    }
+
+    // Stage 2.5. Custom Clipping Mask
+    CAShapeLayer *maskLayer = nil;
+    CGFloat cornerRadius = 0;
+    if (self.clipsToBounds) {
+      if (borderMetrics.borderRadii.isUniform()) {
+        // In this case we can simply use `cornerRadius` exclusivly.
+        cornerRadius = borderMetrics.borderRadii.topLeft;
+      } else {
+        // In this case we have to generate masking layer manually.
+        CGPathRef path = RCTPathCreateWithRoundedRect(
+          self.bounds,
+          RCTGetCornerInsets(RCTCornerRadiiFromBorderRadii(borderMetrics.borderRadii), UIEdgeInsetsZero),
+          nil
+        );
+
+        maskLayer = [CAShapeLayer layer];
+        maskLayer.path = path;
+        CGPathRelease(path);
+      }
+    }
+
+    layer.cornerRadius = cornerRadius;
+    layer.mask = maskLayer;
   }
 }
 
@@ -207,18 +476,46 @@ - (NSObject *)accessibilityElement
   return self;
 }
 
+static NSString *RCTRecursiveAccessibilityLabel(UIView *view)
+{
+  NSMutableString *result = [NSMutableString stringWithString:@""];
+  for (UIView *subview in view.subviews) {
+    NSString *label = subview.accessibilityLabel;
+    if (!label) {
+      label = RCTRecursiveAccessibilityLabel(subview);
+    }
+    if (label && label.length > 0) {
+      if (result.length > 0) {
+        [result appendString:@" "];
+      }
+      [result appendString:label];
+    }
+  }
+  return result;
+}
+
+- (NSString *)accessibilityLabel
+{
+  NSString *label = super.accessibilityLabel;
+  if (label) {
+    return label;
+  }
+
+  return RCTRecursiveAccessibilityLabel(self);
+}
+
 #pragma mark - Accessibility Events
 
 - (NSArray<UIAccessibilityCustomAction *> *)accessibilityCustomActions
 {
-  const auto &accessibilityProps = *std::dynamic_pointer_cast<const AccessibilityProps>(_props);
+  const auto &accessibilityActions = _props->accessibilityActions;
 
-  if (accessibilityProps.accessibilityActions.size() == 0) {
+  if (accessibilityActions.size() == 0) {
     return nil;
   }
 
   NSMutableArray<UIAccessibilityCustomAction *> *customActions = [NSMutableArray array];
-  for (const auto &accessibilityAction : accessibilityProps.accessibilityActions) {
+  for (const auto &accessibilityAction : accessibilityActions) {
     [customActions addObject:[[UIAccessibilityCustomAction alloc] initWithName:RCTNSStringFromString(accessibilityAction)
                                                                         target:self
                                                                       selector:@selector(didActivateAccessibilityCustomAction:)]];
@@ -245,7 +542,7 @@ - (BOOL)didActivateAccessibilityCustomAction:(UIAccessibilityCustomAction *)acti
   return YES;
 }
 
-- (SharedEventEmitter)touchEventEmitter
+- (SharedTouchEventEmitter)touchEventEmitterAtPoint:(CGPoint)point
 {
   return _eventEmitter;
 }
diff --git a/React/Fabric/Mounting/MountItems/RCTCreateMountItem.h b/React/Fabric/Mounting/MountItems/RCTCreateMountItem.h
index 6376094894d21d..a969680443bae5 100644
--- a/React/Fabric/Mounting/MountItems/RCTCreateMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTCreateMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTCreateMountItem.mm b/React/Fabric/Mounting/MountItems/RCTCreateMountItem.mm
index df04396b476039..e51642952740db 100644
--- a/React/Fabric/Mounting/MountItems/RCTCreateMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTCreateMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.h b/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.h
index a4c6077b56f3d4..1907023e17fc32 100644
--- a/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.mm b/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.mm
index ed4a884e411c0d..c45fba6172c984 100644
--- a/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTDeleteMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTInsertMountItem.h b/React/Fabric/Mounting/MountItems/RCTInsertMountItem.h
index e3d4ac29d7aad5..dbae0a1085c229 100644
--- a/React/Fabric/Mounting/MountItems/RCTInsertMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTInsertMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTInsertMountItem.mm b/React/Fabric/Mounting/MountItems/RCTInsertMountItem.mm
index 740718b963d532..15894efe21a647 100644
--- a/React/Fabric/Mounting/MountItems/RCTInsertMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTInsertMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTMountItemProtocol.h b/React/Fabric/Mounting/MountItems/RCTMountItemProtocol.h
index f46c397498b456..4f3d7fe4b590e0 100644
--- a/React/Fabric/Mounting/MountItems/RCTMountItemProtocol.h
+++ b/React/Fabric/Mounting/MountItems/RCTMountItemProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.h b/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.h
index 0fe9555a613ea4..3d3875192c76f2 100644
--- a/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.mm b/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.mm
index 3279b939438f62..341929cacd3e66 100644
--- a/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTRemoveMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.h b/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.h
index 1d145fe9002786..24f37679f19095 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #import <React/RCTMountItemProtocol.h>
 #import <React/RCTPrimitives.h>
-#import <fabric/events/EventEmitter.h>
+#import <react/events/EventEmitter.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.mm b/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.mm
index 18de9cc3a5d097..f94a0859788bba 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateEventEmitterMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.h b/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.h
index 378c179d3c46cd..7fbab407cdfe99 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #import <React/RCTMountItemProtocol.h>
 #import <React/RCTPrimitives.h>
-#import <fabric/core/LayoutMetrics.h>
+#import <react/core/LayoutMetrics.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.mm b/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.mm
index c61a043626a62f..71b76c32643309 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateLayoutMetricsMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.h b/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.h
index b5aedcadecd125..f25d4b7aa44c59 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #import <React/RCTMountItemProtocol.h>
 #import <React/RCTPrimitives.h>
-#import <fabric/core/LocalData.h>
+#import <react/core/LocalData.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.mm b/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.mm
index c10bc3c4b40f8f..80ae5af8f0c13d 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTUpdateLocalDataMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.h b/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.h
index efdfed64ddbf32..7c05196e5d5d52 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.h
+++ b/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #import <React/RCTMountItemProtocol.h>
 #import <React/RCTPrimitives.h>
-#import <fabric/core/Props.h>
+#import <react/core/Props.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.mm b/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.mm
index 694b72e4046a3a..4587a5ec910632 100644
--- a/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.mm
+++ b/React/Fabric/Mounting/MountItems/RCTUpdatePropsMountItem.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/RCTComponentViewProtocol.h b/React/Fabric/Mounting/RCTComponentViewProtocol.h
index 2fab1ec56ad544..b7a26571ec49c1 100644
--- a/React/Fabric/Mounting/RCTComponentViewProtocol.h
+++ b/React/Fabric/Mounting/RCTComponentViewProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/core/LocalData.h>
-#import <fabric/core/Props.h>
-#import <fabric/core/LayoutMetrics.h>
-#import <fabric/events/EventEmitter.h>
+#import <react/core/LocalData.h>
+#import <react/core/Props.h>
+#import <react/core/LayoutMetrics.h>
+#import <react/events/EventEmitter.h>
 #import <React/RCTPrimitives.h>
 
 NS_ASSUME_NONNULL_BEGIN
diff --git a/React/Fabric/Mounting/RCTComponentViewRegistry.h b/React/Fabric/Mounting/RCTComponentViewRegistry.h
index a563270999cefa..ba32ec648808e7 100644
--- a/React/Fabric/Mounting/RCTComponentViewRegistry.h
+++ b/React/Fabric/Mounting/RCTComponentViewRegistry.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/RCTComponentViewRegistry.mm b/React/Fabric/Mounting/RCTComponentViewRegistry.mm
index 6edbeb75d59b46..f6374a27f9ef59 100644
--- a/React/Fabric/Mounting/RCTComponentViewRegistry.mm
+++ b/React/Fabric/Mounting/RCTComponentViewRegistry.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/RCTMountingManager.h b/React/Fabric/Mounting/RCTMountingManager.h
index 89a90ccb7160a4..600d33c86b6b2b 100644
--- a/React/Fabric/Mounting/RCTMountingManager.h
+++ b/React/Fabric/Mounting/RCTMountingManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,8 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/uimanager/TreeMutationInstruction.h>
+#import <react/uimanager/ShadowView.h>
+#import <react/uimanager/ShadowViewMutation.h>
 #import <React/RCTPrimitives.h>
 #import <React/RCTMountingManagerDelegate.h>
 
@@ -28,8 +29,8 @@ NS_ASSUME_NONNULL_BEGIN
  * The order of mutation tnstructions matters.
  * Can be called from any thread.
  */
-- (void)mutateComponentViewTreeWithMutationInstructions:(facebook::react::TreeMutationInstructionList)instructions
-                                                rootTag:(ReactTag)rootTag;
+- (void)performTransactionWithMutations:(facebook::react::ShadowViewMutationList)mutations
+                                rootTag:(ReactTag)rootTag;
 
 /**
  * Suggests preliminary creation of a component view of given type.
diff --git a/React/Fabric/Mounting/RCTMountingManager.mm b/React/Fabric/Mounting/RCTMountingManager.mm
index 49326221f0a672..c018d0fbb0d77e 100644
--- a/React/Fabric/Mounting/RCTMountingManager.mm
+++ b/React/Fabric/Mounting/RCTMountingManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #import "RCTMountingManager.h"
 
-#import <fabric/core/LayoutableShadowNode.h>
+#import <react/core/LayoutableShadowNode.h>
 #import <React/RCTAssert.h>
 #import <React/RCTUtils.h>
 
@@ -38,123 +38,112 @@ - (instancetype)init
   return self;
 }
 
-- (void)mutateComponentViewTreeWithMutationInstructions:(facebook::react::TreeMutationInstructionList)instructions
-                                                rootTag:(ReactTag)rootTag
+- (void)performTransactionWithMutations:(facebook::react::ShadowViewMutationList)mutations
+                                rootTag:(ReactTag)rootTag
 {
   NSMutableArray<RCTMountItemProtocol> *mountItems =
-    [[NSMutableArray<RCTMountItemProtocol> alloc] initWithCapacity:instructions.size() * 2 /* ~ the worst case */];
+    [[NSMutableArray<RCTMountItemProtocol> alloc] initWithCapacity:mutations.size() * 2 /* ~ the worst case */];
 
-  for (auto instruction : instructions) {
-    switch (instruction.getType()) {
-      case TreeMutationInstruction::Creation: {
-        NSString *componentName = RCTNSStringFromString(instruction.getNewChildNode()->getComponentName(), NSASCIIStringEncoding);
+  for (const auto &mutation : mutations) {
+    switch (mutation.type) {
+      case ShadowViewMutation::Create: {
+        NSString *componentName = RCTNSStringFromString(mutation.newChildShadowView.componentName, NSASCIIStringEncoding);
         RCTCreateMountItem *mountItem =
           [[RCTCreateMountItem alloc] initWithComponentName:componentName
-                                                        tag:instruction.getNewChildNode()->getTag()];
+                                                        tag:mutation.newChildShadowView.tag];
         [mountItems addObject:mountItem];
         break;
       }
 
-      case TreeMutationInstruction::Deletion: {
-        NSString *componentName = RCTNSStringFromString(instruction.getOldChildNode()->getComponentName(), NSASCIIStringEncoding);
+      case ShadowViewMutation::Delete: {
+        NSString *componentName = RCTNSStringFromString(mutation.oldChildShadowView.componentName, NSASCIIStringEncoding);
         RCTDeleteMountItem *mountItem =
           [[RCTDeleteMountItem alloc] initWithComponentName:componentName
-                                                        tag:instruction.getOldChildNode()->getTag()];
+                                                        tag:mutation.oldChildShadowView.tag];
         [mountItems addObject:mountItem];
         break;
       }
 
-      case TreeMutationInstruction::Insertion: {
+      case ShadowViewMutation::Insert: {
         // Props
-        [mountItems addObject:[[RCTUpdatePropsMountItem alloc] initWithTag:instruction.getNewChildNode()->getTag()
+        [mountItems addObject:[[RCTUpdatePropsMountItem alloc] initWithTag:mutation.newChildShadowView.tag
                                                                   oldProps:nullptr
-                                                                  newProps:instruction.getNewChildNode()->getProps()]];
+                                                                  newProps:mutation.newChildShadowView.props]];
 
         // EventEmitter
-        [mountItems addObject:[[RCTUpdateEventEmitterMountItem alloc] initWithTag:instruction.getNewChildNode()->getTag()
-                                                                     eventEmitter:instruction.getNewChildNode()->getEventEmitter()]];
+        [mountItems addObject:[[RCTUpdateEventEmitterMountItem alloc] initWithTag:mutation.newChildShadowView.tag
+                                                                     eventEmitter:mutation.newChildShadowView.eventEmitter]];
 
         // LocalData
-        if (instruction.getNewChildNode()->getLocalData()) {
-          [mountItems addObject:[[RCTUpdateLocalDataMountItem alloc] initWithTag:instruction.getNewChildNode()->getTag()
+        if (mutation.newChildShadowView.localData) {
+          [mountItems addObject:[[RCTUpdateLocalDataMountItem alloc] initWithTag:mutation.newChildShadowView.tag
                                                                     oldLocalData:nullptr
-                                                                    newLocalData:instruction.getNewChildNode()->getLocalData()]];
+                                                                    newLocalData:mutation.newChildShadowView.localData]];
         }
 
         // Layout
-        auto layoutableNewShadowNode =
-          std::dynamic_pointer_cast<const LayoutableShadowNode>(instruction.getNewChildNode());
-
-        if (layoutableNewShadowNode) {
-          [mountItems addObject:[[RCTUpdateLayoutMetricsMountItem alloc] initWithTag:instruction.getNewChildNode()->getTag()
+        if (mutation.newChildShadowView.layoutMetrics != EmptyLayoutMetrics) {
+          [mountItems addObject:[[RCTUpdateLayoutMetricsMountItem alloc] initWithTag:mutation.newChildShadowView.tag
                                                                     oldLayoutMetrics:{}
-                                                                    newLayoutMetrics:layoutableNewShadowNode->getLayoutMetrics()]];
+                                                                    newLayoutMetrics:mutation.newChildShadowView.layoutMetrics]];
         }
 
         // Insertion
         RCTInsertMountItem *mountItem =
-        [[RCTInsertMountItem alloc] initWithChildTag:instruction.getNewChildNode()->getTag()
-                                           parentTag:instruction.getParentNode()->getTag()
-                                               index:instruction.getIndex()];
+          [[RCTInsertMountItem alloc] initWithChildTag:mutation.newChildShadowView.tag
+                                             parentTag:mutation.parentShadowView.tag
+                                                 index:mutation.index];
         [mountItems addObject:mountItem];
 
         break;
       }
 
-      case TreeMutationInstruction::Removal: {
+      case ShadowViewMutation::Remove: {
         RCTRemoveMountItem *mountItem =
-          [[RCTRemoveMountItem alloc] initWithChildTag:instruction.getOldChildNode()->getTag()
-                                             parentTag:instruction.getParentNode()->getTag()
-                                                 index:instruction.getIndex()];
+          [[RCTRemoveMountItem alloc] initWithChildTag:mutation.oldChildShadowView.tag
+                                             parentTag:mutation.parentShadowView.tag
+                                                 index:mutation.index];
         [mountItems addObject:mountItem];
         break;
       }
 
-      case TreeMutationInstruction::Replacement: {
-        SharedShadowNode oldShadowNode = instruction.getOldChildNode();
-        SharedShadowNode newShadowNode = instruction.getNewChildNode();
+      case ShadowViewMutation::Update: {
+        auto oldChildShadowView = mutation.oldChildShadowView;
+        auto newChildShadowView = mutation.newChildShadowView;
 
         // Props
-        if (oldShadowNode->getProps() != newShadowNode->getProps()) {
+        if (oldChildShadowView.props != newChildShadowView.props) {
           RCTUpdatePropsMountItem *mountItem =
-            [[RCTUpdatePropsMountItem alloc] initWithTag:instruction.getOldChildNode()->getTag()
-                                                oldProps:instruction.getOldChildNode()->getProps()
-                                                newProps:instruction.getNewChildNode()->getProps()];
+            [[RCTUpdatePropsMountItem alloc] initWithTag:mutation.oldChildShadowView.tag
+                                                oldProps:mutation.oldChildShadowView.props
+                                                newProps:mutation.newChildShadowView.props];
           [mountItems addObject:mountItem];
         }
 
         // EventEmitter
-        if (oldShadowNode->getEventEmitter() != newShadowNode->getEventEmitter()) {
+        if (oldChildShadowView.eventEmitter != newChildShadowView.eventEmitter) {
           RCTUpdateEventEmitterMountItem *mountItem =
-            [[RCTUpdateEventEmitterMountItem alloc] initWithTag:instruction.getOldChildNode()->getTag()
-                                                   eventEmitter:instruction.getOldChildNode()->getEventEmitter()];
+            [[RCTUpdateEventEmitterMountItem alloc] initWithTag:mutation.oldChildShadowView.tag
+                                                   eventEmitter:mutation.oldChildShadowView.eventEmitter];
           [mountItems addObject:mountItem];
         }
 
         // LocalData
-        if (oldShadowNode->getLocalData() != newShadowNode->getLocalData()) {
+        if (oldChildShadowView.localData != newChildShadowView.localData) {
           RCTUpdateLocalDataMountItem *mountItem =
-            [[RCTUpdateLocalDataMountItem alloc] initWithTag:newShadowNode->getTag()
-                                                oldLocalData:oldShadowNode->getLocalData()
-                                                newLocalData:newShadowNode->getLocalData()];
+            [[RCTUpdateLocalDataMountItem alloc] initWithTag:newChildShadowView.tag
+                                                oldLocalData:oldChildShadowView.localData
+                                                newLocalData:newChildShadowView.localData];
           [mountItems addObject:mountItem];
         }
 
         // Layout
-        auto layoutableOldShadowNode =
-          std::dynamic_pointer_cast<const LayoutableShadowNode>(oldShadowNode);
-
-        if (layoutableOldShadowNode) {
-          auto layoutableNewShadowNode =
-            std::dynamic_pointer_cast<const LayoutableShadowNode>(newShadowNode);
-
-          if (layoutableOldShadowNode->getLayoutMetrics() != layoutableNewShadowNode->getLayoutMetrics()) {
-            RCTUpdateLayoutMetricsMountItem *mountItem =
-              [[RCTUpdateLayoutMetricsMountItem alloc] initWithTag:instruction.getOldChildNode()->getTag()
-                                                  oldLayoutMetrics:layoutableOldShadowNode->getLayoutMetrics()
-                                                  newLayoutMetrics:layoutableNewShadowNode->getLayoutMetrics()];
-            [mountItems addObject:mountItem];
-          }
+        if (oldChildShadowView.layoutMetrics != newChildShadowView.layoutMetrics) {
+          RCTUpdateLayoutMetricsMountItem *mountItem =
+            [[RCTUpdateLayoutMetricsMountItem alloc] initWithTag:mutation.oldChildShadowView.tag
+                                                oldLayoutMetrics:oldChildShadowView.layoutMetrics
+                                                newLayoutMetrics:newChildShadowView.layoutMetrics];
+          [mountItems addObject:mountItem];
         }
 
         break;
diff --git a/React/Fabric/Mounting/RCTMountingManagerDelegate.h b/React/Fabric/Mounting/RCTMountingManagerDelegate.h
index 90ef6cecfa6ad0..cd0108153f8dfc 100644
--- a/React/Fabric/Mounting/RCTMountingManagerDelegate.h
+++ b/React/Fabric/Mounting/RCTMountingManagerDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/UIView+ComponentViewProtocol.h b/React/Fabric/Mounting/UIView+ComponentViewProtocol.h
index 61c981b59563df..6c630782aa104f 100644
--- a/React/Fabric/Mounting/UIView+ComponentViewProtocol.h
+++ b/React/Fabric/Mounting/UIView+ComponentViewProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Mounting/UIView+ComponentViewProtocol.mm b/React/Fabric/Mounting/UIView+ComponentViewProtocol.mm
index 579f4572309ab3..e60f393a1a5e62 100644
--- a/React/Fabric/Mounting/UIView+ComponentViewProtocol.mm
+++ b/React/Fabric/Mounting/UIView+ComponentViewProtocol.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/RCTConversions.h b/React/Fabric/RCTConversions.h
index ff521a10f5332a..16ee3ed2d20bd3 100644
--- a/React/Fabric/RCTConversions.h
+++ b/React/Fabric/RCTConversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,14 +7,21 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/components/view/primitives.h>
-#import <fabric/graphics/Color.h>
-#import <fabric/graphics/Geometry.h>
+#import <react/components/view/primitives.h>
+#import <react/components/view/AccessibilityPrimitives.h>
+#import <react/graphics/Color.h>
+#import <react/graphics/Geometry.h>
 
-inline NSString *_Nullable RCTNSStringFromString(const std::string &string, const NSStringEncoding &encoding = NSUTF8StringEncoding) {
+NS_ASSUME_NONNULL_BEGIN
+
+inline NSString *RCTNSStringFromString(const std::string &string, const NSStringEncoding &encoding = NSUTF8StringEncoding) {
   return [NSString stringWithCString:string.c_str() encoding:encoding];
 }
 
+inline NSString *_Nullable RCTNSStringFromStringNilIfEmpty(const std::string &string, const NSStringEncoding &encoding = NSUTF8StringEncoding) {
+  return string.empty() ? nil : RCTNSStringFromString(string, encoding);
+}
+
 inline std::string RCTStringFromNSString(NSString *string, const NSStringEncoding &encoding = NSUTF8StringEncoding) {
   return [string cStringUsingEncoding:encoding];
 }
@@ -43,6 +50,27 @@ inline UIEdgeInsets RCTUIEdgeInsetsFromEdgeInsets(const facebook::react::EdgeIns
   return {edgeInsets.top, edgeInsets.left, edgeInsets.bottom, edgeInsets.right};
 }
 
+inline UIAccessibilityTraits RCTUIAccessibilityTraitsFromAccessibilityTraits(facebook::react::AccessibilityTraits accessibilityTraits) {
+  using AccessibilityTraits = facebook::react::AccessibilityTraits;
+  UIAccessibilityTraits result = UIAccessibilityTraitNone;
+  if ((accessibilityTraits & AccessibilityTraits::Button) != AccessibilityTraits::None) { result |= UIAccessibilityTraitButton; }
+  if ((accessibilityTraits & AccessibilityTraits::Link) != AccessibilityTraits::None) { result |= UIAccessibilityTraitLink; }
+  if ((accessibilityTraits & AccessibilityTraits::Image) != AccessibilityTraits::None) { result |= UIAccessibilityTraitImage; }
+  if ((accessibilityTraits & AccessibilityTraits::Selected) != AccessibilityTraits::None) { result |= UIAccessibilityTraitSelected; }
+  if ((accessibilityTraits & AccessibilityTraits::PlaysSound) != AccessibilityTraits::None) { result |= UIAccessibilityTraitPlaysSound; }
+  if ((accessibilityTraits & AccessibilityTraits::KeyboardKey) != AccessibilityTraits::None) { result |= UIAccessibilityTraitKeyboardKey; }
+  if ((accessibilityTraits & AccessibilityTraits::StaticText) != AccessibilityTraits::None) { result |= UIAccessibilityTraitStaticText; }
+  if ((accessibilityTraits & AccessibilityTraits::SummaryElement) != AccessibilityTraits::None) { result |= UIAccessibilityTraitSummaryElement; }
+  if ((accessibilityTraits & AccessibilityTraits::NotEnabled) != AccessibilityTraits::None) { result |= UIAccessibilityTraitNotEnabled; }
+  if ((accessibilityTraits & AccessibilityTraits::UpdatesFrequently) != AccessibilityTraits::None) { result |= UIAccessibilityTraitUpdatesFrequently; }
+  if ((accessibilityTraits & AccessibilityTraits::SearchField) != AccessibilityTraits::None) { result |= UIAccessibilityTraitSearchField; }
+  if ((accessibilityTraits & AccessibilityTraits::StartsMediaSession) != AccessibilityTraits::None) { result |= UIAccessibilityTraitStartsMediaSession; }
+  if ((accessibilityTraits & AccessibilityTraits::Adjustable) != AccessibilityTraits::None) { result |= UIAccessibilityTraitAdjustable; }
+  if ((accessibilityTraits & AccessibilityTraits::AllowsDirectInteraction) != AccessibilityTraits::None) { result |= UIAccessibilityTraitAllowsDirectInteraction; }
+  if ((accessibilityTraits & AccessibilityTraits::CausesPageTurn) != AccessibilityTraits::None) { result |= UIAccessibilityTraitCausesPageTurn; }
+  if ((accessibilityTraits & AccessibilityTraits::Header) != AccessibilityTraits::None) { result |= UIAccessibilityTraitHeader; }
+  return result;
+};
 
 inline CATransform3D RCTCATransform3DFromTransformMatrix(const facebook::react::Transform &transformMatrix) {
   return {
@@ -80,3 +108,5 @@ inline facebook::react::Rect RCTRectFromCGRect(const CGRect &rect) {
 inline facebook::react::EdgeInsets RCTEdgeInsetsFromUIEdgeInsets(const UIEdgeInsets &edgeInsets) {
   return {edgeInsets.top, edgeInsets.left, edgeInsets.bottom, edgeInsets.right};
 }
+
+NS_ASSUME_NONNULL_END
diff --git a/React/Fabric/RCTPrimitives.h b/React/Fabric/RCTPrimitives.h
index 7712dabc9f1ed4..c837dd81909b49 100644
--- a/React/Fabric/RCTPrimitives.h
+++ b/React/Fabric/RCTPrimitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/RCTScheduler.h b/React/Fabric/RCTScheduler.h
index 6814046871d7e7..9a80af8ec59cd4 100644
--- a/React/Fabric/RCTScheduler.h
+++ b/React/Fabric/RCTScheduler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,9 @@
 #import <memory>
 
 #import <React/RCTPrimitives.h>
-#import <fabric/core/LayoutConstraints.h>
-#import <fabric/core/LayoutContext.h>
-#import <fabric/uimanager/FabricUIManager.h>
-#import <fabric/uimanager/TreeMutationInstruction.h>
+#import <react/core/LayoutConstraints.h>
+#import <react/core/LayoutContext.h>
+#import <react/uimanager/ShadowViewMutation.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -23,7 +22,8 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @protocol RCTSchedulerDelegate
 
-- (void)schedulerDidComputeMutationInstructions:(facebook::react::TreeMutationInstructionList)instructions rootTag:(ReactTag)rootTag;
+- (void)schedulerDidFinishTransaction:(facebook::react::ShadowViewMutationList)mutations
+                              rootTag:(ReactTag)rootTag;
 
 - (void)schedulerDidRequestPreliminaryViewAllocationWithComponentName:(NSString *)componentName;
 
@@ -36,23 +36,23 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property (atomic, weak, nullable) id<RCTSchedulerDelegate> delegate;
 
-- (void)registerRootTag:(ReactTag)tag;
+- (instancetype)initWithContextContainer:(std::shared_ptr<void>)contextContatiner;
 
-- (void)unregisterRootTag:(ReactTag)tag;
+- (void)startSurfaceWithSurfaceId:(facebook::react::SurfaceId)surfaceId
+                       moduleName:(NSString *)moduleName
+                     initailProps:(NSDictionary *)initialProps
+                layoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints
+                    layoutContext:(facebook::react::LayoutContext)layoutContext;
 
-- (CGSize)measureWithLayoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints
-                         layoutContext:(facebook::react::LayoutContext)layoutContext
-                               rootTag:(ReactTag)rootTag;
+- (void)stopSurfaceWithSurfaceId:(facebook::react::SurfaceId)surfaceId;
 
-- (void)constraintLayoutWithLayoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints
+- (CGSize)measureSurfaceWithLayoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints
                                 layoutContext:(facebook::react::LayoutContext)layoutContext
-                                      rootTag:(ReactTag)rootTag;
+                                    surfaceId:(facebook::react::SurfaceId)surfaceId;
 
-@end
-
-@interface RCTScheduler (Deprecated)
-
-- (std::shared_ptr<facebook::react::FabricUIManager>)uiManager_DO_NOT_USE;
+- (void)constraintSurfaceLayoutWithLayoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints
+                                       layoutContext:(facebook::react::LayoutContext)layoutContext
+                                           surfaceId:(facebook::react::SurfaceId)surfaceId;
 
 @end
 
diff --git a/React/Fabric/RCTScheduler.mm b/React/Fabric/RCTScheduler.mm
index 3f441b1c25bb2f..7c65f1c6fc1f92 100644
--- a/React/Fabric/RCTScheduler.mm
+++ b/React/Fabric/RCTScheduler.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,11 @@
 
 #import "RCTScheduler.h"
 
-#import <fabric/imagemanager/ImageManager.h>
-#import <fabric/uimanager/ContextContainer.h>
-#import <fabric/uimanager/Scheduler.h>
-#import <fabric/uimanager/SchedulerDelegate.h>
-#import <React/RCTImageLoader.h>
-#import <React/RCTBridge+Private.h>
+#import <react/uimanager/ContextContainer.h>
+#import <react/uimanager/Scheduler.h>
+#import <react/uimanager/SchedulerDelegate.h>
+
+#import <React/RCTFollyConvert.h>
 
 #import "RCTConversions.h"
 
@@ -20,14 +19,15 @@
 
 class SchedulerDelegateProxy: public SchedulerDelegate {
 public:
-  SchedulerDelegateProxy(void *scheduler): scheduler_(scheduler) {}
+  SchedulerDelegateProxy(void *scheduler):
+    scheduler_(scheduler) {}
 
-  void schedulerDidComputeMutationInstructions(Tag rootTag, const TreeMutationInstructionList &instructions) override {
+  void schedulerDidFinishTransaction(Tag rootTag, const ShadowViewMutationList &mutations) override {
     RCTScheduler *scheduler = (__bridge RCTScheduler *)scheduler_;
-    [scheduler.delegate schedulerDidComputeMutationInstructions:instructions rootTag:rootTag];
+    [scheduler.delegate schedulerDidFinishTransaction:mutations rootTag:rootTag];
   }
 
-  void schedulerDidRequestPreliminaryViewAllocation(ComponentName componentName) override {
+  void schedulerDidRequestPreliminaryViewAllocation(SurfaceId surfaceId, ComponentName componentName, bool isLayoutable, ComponentHandle componentHandle) override {
     RCTScheduler *scheduler = (__bridge RCTScheduler *)scheduler_;
     [scheduler.delegate schedulerDidRequestPreliminaryViewAllocationWithComponentName:RCTNSStringFromString(componentName, NSASCIIStringEncoding)];
   }
@@ -41,17 +41,11 @@ @implementation RCTScheduler {
   std::shared_ptr<SchedulerDelegateProxy> _delegateProxy;
 }
 
-- (instancetype)init
+- (instancetype)initWithContextContainer:(std::shared_ptr<void>)contextContatiner
 {
   if (self = [super init]) {
     _delegateProxy = std::make_shared<SchedulerDelegateProxy>((__bridge void *)self);
-
-    SharedContextContainer contextContainer = std::make_shared<ContextContainer>();
-
-    void *imageLoader = (__bridge void *)[[RCTBridge currentBridge] imageLoader];
-    contextContainer->registerInstance(std::make_shared<ImageManager>(imageLoader));
-
-    _scheduler = std::make_shared<Scheduler>(contextContainer);
+    _scheduler = std::make_shared<Scheduler>(std::static_pointer_cast<ContextContainer>(contextContatiner));
     _scheduler->setDelegate(_delegateProxy.get());
   }
 
@@ -63,37 +57,43 @@ - (void)dealloc
   _scheduler->setDelegate(nullptr);
 }
 
-- (void)registerRootTag:(ReactTag)tag
-{
-  _scheduler->registerRootTag(tag);
-}
-
-- (void)unregisterRootTag:(ReactTag)tag
+- (void)startSurfaceWithSurfaceId:(SurfaceId)surfaceId
+                       moduleName:(NSString *)moduleName
+                     initailProps:(NSDictionary *)initialProps
+                layoutConstraints:(LayoutConstraints)layoutConstraints
+                    layoutContext:(LayoutContext)layoutContext;
 {
-  _scheduler->unregisterRootTag(tag);
+  auto props = convertIdToFollyDynamic(initialProps);
+  _scheduler->startSurface(
+      surfaceId,
+      RCTStringFromNSString(moduleName),
+      props,
+      layoutConstraints,
+      layoutContext);
+  _scheduler->renderTemplateToSurface(
+      surfaceId,
+      props.getDefault("navigationConfig")
+          .getDefault("initialUITemplate", "")
+          .getString());
 }
 
-- (CGSize)measureWithLayoutConstraints:(LayoutConstraints)layoutConstraints
-                         layoutContext:(LayoutContext)layoutContext
-                               rootTag:(ReactTag)rootTag
+- (void)stopSurfaceWithSurfaceId:(SurfaceId)surfaceId
 {
-  return RCTCGSizeFromSize(_scheduler->measure(rootTag, layoutConstraints, layoutContext));
+  _scheduler->stopSurface(surfaceId);
 }
 
-- (void)constraintLayoutWithLayoutConstraints:(LayoutConstraints)layoutConstraints
+- (CGSize)measureSurfaceWithLayoutConstraints:(LayoutConstraints)layoutConstraints
                                 layoutContext:(LayoutContext)layoutContext
-                                      rootTag:(ReactTag)rootTag
+                                    surfaceId:(SurfaceId)surfaceId
 {
-  _scheduler->constraintLayout(rootTag, layoutConstraints, layoutContext);
+  return RCTCGSizeFromSize(_scheduler->measureSurface(surfaceId, layoutConstraints, layoutContext));
 }
 
-@end
-
-@implementation RCTScheduler (Deprecated)
-
-- (std::shared_ptr<FabricUIManager>)uiManager_DO_NOT_USE
+- (void)constraintSurfaceLayoutWithLayoutConstraints:(LayoutConstraints)layoutConstraints
+                                       layoutContext:(LayoutContext)layoutContext
+                                           surfaceId:(SurfaceId)surfaceId
 {
-  return _scheduler->getUIManager_DO_NOT_USE();
+  _scheduler->constraintSurfaceLayout(surfaceId, layoutConstraints, layoutContext);
 }
 
 @end
diff --git a/React/Fabric/RCTSurfacePresenter.h b/React/Fabric/RCTSurfacePresenter.h
index 793295d0ab3418..d95c57bc15a98d 100644
--- a/React/Fabric/RCTSurfacePresenter.h
+++ b/React/Fabric/RCTSurfacePresenter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 
 #import <React/RCTBridge.h>
 #import <React/RCTPrimitives.h>
-#import <fabric/uimanager/FabricUIManager.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -37,6 +36,9 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (void)registerSurface:(RCTFabricSurface *)surface;
 - (void)unregisterSurface:(RCTFabricSurface *)surface;
+- (void)setProps:(NSDictionary *)props
+         surface:(RCTFabricSurface *)surface;
+
 - (nullable RCTFabricSurface *)surfaceForRootTag:(ReactTag)rootTag;
 
 /**
@@ -57,12 +59,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface RCTSurfacePresenter (Deprecated)
 
-/**
- * We need to expose `uiManager` for registration
- * purposes. Eventually, we will move this down to C++ side.
- */
-- (std::shared_ptr<facebook::react::FabricUIManager>)uiManager_DO_NOT_USE;
-
 /**
  * Returns a underlying bridge.
  */
@@ -70,9 +66,9 @@ NS_ASSUME_NONNULL_BEGIN
 
 @end
 
-@interface RCTBridge (RCTSurfacePresenter)
+@interface RCTBridge (Deprecated)
 
-- (RCTSurfacePresenter *)surfacePresenter;
+@property (nonatomic) RCTSurfacePresenter *surfacePresenter;
 
 @end
 
diff --git a/React/Fabric/RCTSurfacePresenter.mm b/React/Fabric/RCTSurfacePresenter.mm
index aedcd7ae8be012..1b8a92110e386e 100644
--- a/React/Fabric/RCTSurfacePresenter.mm
+++ b/React/Fabric/RCTSurfacePresenter.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,16 @@
 
 #import "RCTSurfacePresenter.h"
 
+#import <objc/runtime.h>
+#import <mutex>
+#import <jsi/jsi.h>
+#import <cxxreact/MessageQueueThread.h>
+
 #import <React/RCTAssert.h>
 #import <React/RCTBridge+Private.h>
 #import <React/RCTComponentViewRegistry.h>
 #import <React/RCTFabricSurface.h>
+#import <React/RCTImageLoader.h>
 #import <React/RCTMountingManager.h>
 #import <React/RCTMountingManagerDelegate.h>
 #import <React/RCTScheduler.h>
@@ -18,22 +24,31 @@
 #import <React/RCTSurfaceView.h>
 #import <React/RCTSurfaceView+Internal.h>
 #import <React/RCTUtils.h>
-#import <fabric/core/LayoutContext.h>
-#import <fabric/core/LayoutConstraints.h>
+#import <react/core/LayoutContext.h>
+#import <react/core/LayoutConstraints.h>
+#import <react/imagemanager/ImageManager.h>
+#import <react/uimanager/ContextContainer.h>
 
+#import "MainRunLoopEventBeat.h"
+#import "RuntimeEventBeat.h"
 #import "RCTConversions.h"
 
 using namespace facebook::react;
 
+@interface RCTBridge ()
+- (std::shared_ptr<facebook::react::MessageQueueThread>)jsMessageThread;
+@end
+
 @interface RCTSurfacePresenter () <RCTSchedulerDelegate, RCTMountingManagerDelegate>
 @end
 
 @implementation RCTSurfacePresenter {
-  RCTScheduler *_scheduler;
-  RCTMountingManager *_mountingManager;
-  RCTBridge *_bridge;
+  std::mutex _schedulerMutex;
+  RCTScheduler *_Nullable _scheduler; // Thread-safe. Mutation of the instance variable is protected by `_schedulerMutex`.
+  RCTMountingManager *_mountingManager; // Thread-safe.
+  RCTSurfaceRegistry *_surfaceRegistry;  // Thread-safe.
+  RCTBridge *_bridge; // Unsafe. We are moving away from Bridge.
   RCTBridge *_batchedBridge;
-  RCTSurfaceRegistry *_surfaceRegistry;
 }
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge
@@ -42,10 +57,8 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
     _bridge = bridge;
     _batchedBridge = [_bridge batchedBridge] ?: _bridge;
 
-    _scheduler = [[RCTScheduler alloc] init];
-    _scheduler.delegate = self;
-
     _surfaceRegistry = [[RCTSurfaceRegistry alloc] init];
+
     _mountingManager = [[RCTMountingManager alloc] init];
     _mountingManager.delegate = self;
 
@@ -67,39 +80,28 @@ - (void)dealloc
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
-#pragma mark - RCTSchedulerDelegate
-
-- (void)schedulerDidComputeMutationInstructions:(facebook::react::TreeMutationInstructionList)instructions
-                                        rootTag:(ReactTag)rootTag
-{
-  [_mountingManager mutateComponentViewTreeWithMutationInstructions:instructions
-                                                            rootTag:rootTag];
-}
-
-- (void)schedulerDidRequestPreliminaryViewAllocationWithComponentName:(NSString *)componentName
-{
-  [_mountingManager preliminaryCreateComponentViewWithName:componentName];
-}
-
 #pragma mark - Internal Surface-dedicated Interface
 
 - (void)registerSurface:(RCTFabricSurface *)surface
 {
   [_surfaceRegistry registerSurface:surface];
-  [_scheduler registerRootTag:surface.rootTag];
-  [self runSurface:surface];
-
-  // FIXME: Mutation instruction MUST produce instruction for root node.
-  [_mountingManager.componentViewRegistry dequeueComponentViewWithName:@"Root" tag:surface.rootTag];
+  [self _startSurface:surface];
 }
 
 - (void)unregisterSurface:(RCTFabricSurface *)surface
 {
-  [self stopSurface:surface];
-  [_scheduler unregisterRootTag:surface.rootTag];
+  [self _stopSurface:surface];
   [_surfaceRegistry unregisterSurface:surface];
 }
 
+- (void)setProps:(NSDictionary *)props
+         surface:(RCTFabricSurface *)surface
+{
+  // This implementation is suboptimal indeed but still better than nothing for now.
+  [self _stopSurface:surface];
+  [self _startSurface:surface];
+}
+
 - (RCTFabricSurface *)surfaceForRootTag:(ReactTag)rootTag
 {
   return [_surfaceRegistry surfaceForRootTag:rootTag];
@@ -109,79 +111,185 @@ - (CGSize)sizeThatFitsMinimumSize:(CGSize)minimumSize
                       maximumSize:(CGSize)maximumSize
                           surface:(RCTFabricSurface *)surface
 {
-  LayoutContext layoutContext;
-  layoutContext.pointScaleFactor = RCTScreenScale();
-  LayoutConstraints layoutConstraints = {};
-  layoutConstraints.minimumSize = RCTSizeFromCGSize(minimumSize);
-  layoutConstraints.maximumSize = RCTSizeFromCGSize(maximumSize);
+  LayoutContext layoutContext = {
+    .pointScaleFactor = RCTScreenScale()
+  };
+
+  LayoutConstraints layoutConstraints = {
+    .minimumSize = RCTSizeFromCGSize(minimumSize),
+    .maximumSize = RCTSizeFromCGSize(maximumSize)
+  };
 
-  return [_scheduler measureWithLayoutConstraints:layoutConstraints
-                                    layoutContext:layoutContext
-                                          rootTag:surface.rootTag];
+  return [self._scheduler measureSurfaceWithLayoutConstraints:layoutConstraints
+                                                layoutContext:layoutContext
+                                                    surfaceId:surface.rootTag];
 }
 
 - (void)setMinimumSize:(CGSize)minimumSize
            maximumSize:(CGSize)maximumSize
                surface:(RCTFabricSurface *)surface
 {
-  LayoutContext layoutContext;
-  layoutContext.pointScaleFactor = RCTScreenScale();
-  LayoutConstraints layoutConstraints = {};
-  layoutConstraints.minimumSize = RCTSizeFromCGSize(minimumSize);
-  layoutConstraints.maximumSize = RCTSizeFromCGSize(maximumSize);
+  LayoutContext layoutContext = {
+    .pointScaleFactor = RCTScreenScale()
+  };
+
+  LayoutConstraints layoutConstraints = {
+    .minimumSize = RCTSizeFromCGSize(minimumSize),
+    .maximumSize = RCTSizeFromCGSize(maximumSize)
+  };
+
+  [self._scheduler constraintSurfaceLayoutWithLayoutConstraints:layoutConstraints
+                                                  layoutContext:layoutContext
+                                                      surfaceId:surface.rootTag];
+}
+
+#pragma mark - Private
+
+- (RCTScheduler *)_scheduler
+{
+  std::lock_guard<std::mutex> lock(_schedulerMutex);
+
+  if (_scheduler) {
+    return _scheduler;
+  }
+
+  auto contextContainer = std::make_shared<ContextContainer>();
+
+  auto messageQueueThread = _batchedBridge.jsMessageThread;
+  auto runtime = (facebook::jsi::Runtime *)((RCTCxxBridge *)_batchedBridge).runtime;
+
+  RuntimeExecutor runtimeExecutor =
+    [runtime, messageQueueThread](std::function<void(facebook::jsi::Runtime &runtime)> &&callback) {
+      messageQueueThread->runOnQueue([runtime, callback = std::move(callback)]() {
+        callback(*runtime);
+      });
+    };
+
+  EventBeatFactory synchronousBeatFactory = [runtimeExecutor]() {
+    return std::make_unique<MainRunLoopEventBeat>(runtimeExecutor);
+  };
+
+  EventBeatFactory asynchronousBeatFactory = [runtimeExecutor]() {
+    return std::make_unique<RuntimeEventBeat>(runtimeExecutor);
+  };
+
+  contextContainer->registerInstance<EventBeatFactory>(synchronousBeatFactory, "synchronous");
+  contextContainer->registerInstance<EventBeatFactory>(asynchronousBeatFactory, "asynchronous");
+
+  contextContainer->registerInstance(runtimeExecutor, "runtime-executor");
+
+  contextContainer->registerInstance(std::make_shared<ImageManager>((__bridge void *)[_bridge imageLoader]));
+
+  _scheduler = [[RCTScheduler alloc] initWithContextContainer:contextContainer];
+  _scheduler.delegate = self;
 
-  [_scheduler constraintLayoutWithLayoutConstraints:layoutConstraints
-                                      layoutContext:layoutContext
-                                            rootTag:surface.rootTag];
+  return _scheduler;
 }
 
-- (void)runSurface:(RCTFabricSurface *)surface
+- (void)_startSurface:(RCTFabricSurface *)surface
 {
-  NSDictionary *applicationParameters = @{
-    @"rootTag": @(surface.rootTag),
-    @"initialProps": surface.properties,
+  [_mountingManager.componentViewRegistry dequeueComponentViewWithName:@"Root" tag:surface.rootTag];
+
+  LayoutContext layoutContext = {
+    .pointScaleFactor = RCTScreenScale()
+  };
+
+  LayoutConstraints layoutConstraints = {
+    .minimumSize = RCTSizeFromCGSize(surface.minimumSize),
+    .maximumSize = RCTSizeFromCGSize(surface.maximumSize)
   };
 
-  [_batchedBridge enqueueJSCall:@"AppRegistry" method:@"runApplication" args:@[surface.moduleName, applicationParameters] completion:NULL];
+  [self._scheduler startSurfaceWithSurfaceId:surface.rootTag
+                                  moduleName:surface.moduleName
+                                initailProps:surface.properties
+                           layoutConstraints:layoutConstraints
+                               layoutContext:layoutContext];
 }
 
-- (void)stopSurface:(RCTFabricSurface *)surface
+- (void)_stopSurface:(RCTFabricSurface *)surface
 {
-  [_batchedBridge enqueueJSCall:@"AppRegistry" method:@"unmountApplicationComponentAtRootTag" args:@[@(surface.rootTag)] completion:NULL];
+  [self._scheduler stopSurfaceWithSurfaceId:surface.rootTag];
+
+  UIView<RCTComponentViewProtocol> *rootView = [_mountingManager.componentViewRegistry componentViewByTag:surface.rootTag];
+  [_mountingManager.componentViewRegistry enqueueComponentViewWithName:@"Root" tag:surface.rootTag componentView:rootView];
+
+  [surface _unsetStage:(RCTSurfaceStagePrepared | RCTSurfaceStageMounted)];
 }
 
-#pragma mark - RCTMountingManagerDelegate
+- (void)_startAllSurfaces
+{
+  for (RCTFabricSurface *surface in _surfaceRegistry.enumerator) {
+    [self _startSurface:surface];
+  }
+}
 
-- (void)mountingManager:(RCTMountingManager *)mountingManager willMountComponentsWithRootTag:(ReactTag)rootTag
+- (void)_stopAllSurfaces
 {
-  RCTIsMainQueue();
-  // TODO: Propagate state change to Surface.
+  for (RCTFabricSurface *surface in _surfaceRegistry.enumerator) {
+    [self _stopSurface:surface];
+  }
 }
 
-- (void)mountingManager:(RCTMountingManager *)mountingManager didMountComponentsWithRootTag:(ReactTag)rootTag
+#pragma mark - RCTSchedulerDelegate
+
+- (void)schedulerDidFinishTransaction:(facebook::react::ShadowViewMutationList)mutations
+                                        rootTag:(ReactTag)rootTag
 {
-  RCTIsMainQueue();
   RCTFabricSurface *surface = [_surfaceRegistry surfaceForRootTag:rootTag];
 
-  // FIXME: Implement proper state propagation mechanism.
-  [surface _setStage:RCTSurfaceStageSurfaceDidInitialRendering];
-  [surface _setStage:RCTSurfaceStageSurfaceDidInitialLayout];
-  [surface _setStage:RCTSurfaceStageSurfaceDidInitialMounting];
+  [surface _setStage:RCTSurfaceStagePrepared];
+
+  [_mountingManager performTransactionWithMutations:mutations
+                                            rootTag:rootTag];
+}
+
+- (void)schedulerDidRequestPreliminaryViewAllocationWithComponentName:(NSString *)componentName
+{
+  [_mountingManager preliminaryCreateComponentViewWithName:componentName];
+}
+
+#pragma mark - RCTMountingManagerDelegate
+
+- (void)mountingManager:(RCTMountingManager *)mountingManager willMountComponentsWithRootTag:(ReactTag)rootTag
+{
+  RCTAssertMainQueue();
+
+  // Does nothing.
+}
 
-  UIView *rootComponentView = [_mountingManager.componentViewRegistry componentViewByTag:rootTag];
+- (void)mountingManager:(RCTMountingManager *)mountingManager didMountComponentsWithRootTag:(ReactTag)rootTag
+{
+  RCTAssertMainQueue();
 
-  surface.view.rootView = (RCTSurfaceRootView *)rootComponentView;
+  RCTFabricSurface *surface = [_surfaceRegistry surfaceForRootTag:rootTag];
+  RCTSurfaceStage stage = surface.stage;
+  if (stage & RCTSurfaceStagePrepared) {
+    // We have to progress the stage only if the preparing phase is done.
+    if ([surface _setStage:RCTSurfaceStageMounted]) {
+      UIView *rootComponentView = [_mountingManager.componentViewRegistry componentViewByTag:rootTag];
+      surface.view.rootView = (RCTSurfaceRootView *)rootComponentView;
+    }
+  }
 }
 
 #pragma mark - Bridge events
 
 - (void)handleBridgeWillReloadNotification:(NSNotification *)notification
 {
-  // TODO: Define a lifecycle contract for the pieces involved here including the scheduler, mounting manager, and
-  // the surface registry. For now simply recreate the scheduler on reload.
-  // The goal is to deallocate the Scheduler and its underlying references before the JS runtime is destroyed.
-  _scheduler = [[RCTScheduler alloc] init];
-  _scheduler.delegate = self;
+  {
+    std::lock_guard<std::mutex> lock(_schedulerMutex);
+    if (!_scheduler) {
+      // Seems we are already in the realoding process.
+      return;
+    }
+  }
+
+  [self _stopAllSurfaces];
+
+  {
+    std::lock_guard<std::mutex> lock(_schedulerMutex);
+    _scheduler = nil;
+  }
 }
 
 - (void)handleJavaScriptDidLoadNotification:(NSNotification *)notification
@@ -189,6 +297,8 @@ - (void)handleJavaScriptDidLoadNotification:(NSNotification *)notification
   RCTBridge *bridge = notification.userInfo[@"bridge"];
   if (bridge != _batchedBridge) {
     _batchedBridge = bridge;
+
+    [self _startAllSurfaces];
   }
 }
 
@@ -196,11 +306,6 @@ - (void)handleJavaScriptDidLoadNotification:(NSNotification *)notification
 
 @implementation RCTSurfacePresenter (Deprecated)
 
-- (std::shared_ptr<FabricUIManager>)uiManager_DO_NOT_USE
-{
-  return _scheduler.uiManager_DO_NOT_USE;
-}
-
 - (RCTBridge *)bridge_DO_NOT_USE
 {
   return _bridge;
@@ -208,11 +313,16 @@ - (RCTBridge *)bridge_DO_NOT_USE
 
 @end
 
-@implementation RCTBridge (RCTSurfacePresenter)
+@implementation RCTBridge (Deprecated)
+
+- (void)setSurfacePresenter:(RCTSurfacePresenter *)surfacePresenter
+{
+  objc_setAssociatedObject(self, @selector(surfacePresenter), surfacePresenter, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
 
 - (RCTSurfacePresenter *)surfacePresenter
 {
-  return [self jsBoundExtraModuleForClass:[RCTSurfacePresenter class]];
+  return objc_getAssociatedObject(self, @selector(surfacePresenter));
 }
 
 @end
diff --git a/React/Fabric/RCTSurfaceRegistry.h b/React/Fabric/RCTSurfaceRegistry.h
index 013d70f4895569..d7a3e755cbad5c 100644
--- a/React/Fabric/RCTSurfaceRegistry.h
+++ b/React/Fabric/RCTSurfaceRegistry.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,6 +21,8 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @interface RCTSurfaceRegistry : NSObject
 
+- (NSEnumerator<RCTFabricSurface *> *)enumerator;
+
 /**
  * Adds Surface object into the registry.
  * The registry does not retain Surface references.
diff --git a/React/Fabric/RCTSurfaceRegistry.mm b/React/Fabric/RCTSurfaceRegistry.mm
index d2aa3bde42d56a..727b4d0e888583 100644
--- a/React/Fabric/RCTSurfaceRegistry.mm
+++ b/React/Fabric/RCTSurfaceRegistry.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,12 +20,19 @@ - (instancetype)init
 {
   if (self = [super init]) {
     _registry = [NSMapTable mapTableWithKeyOptions:NSPointerFunctionsIntegerPersonality | NSPointerFunctionsOpaqueMemory
-                                      valueOptions:NSPointerFunctionsObjectPersonality];
+                                      valueOptions:NSPointerFunctionsObjectPersonality | NSPointerFunctionsWeakMemory];
   }
 
   return self;
 }
 
+- (NSEnumerator<RCTFabricSurface *> *)enumerator
+{
+  std::lock_guard<std::mutex> lock(_mutex);
+
+  return [_registry objectEnumerator];
+}
+
 - (void)registerSurface:(RCTFabricSurface *)surface
 {
   std::lock_guard<std::mutex> lock(_mutex);
diff --git a/React/Fabric/RCTSurfaceTouchHandler.h b/React/Fabric/RCTSurfaceTouchHandler.h
index 670ef284832ca9..3c0b68be0d8155 100644
--- a/React/Fabric/RCTSurfaceTouchHandler.h
+++ b/React/Fabric/RCTSurfaceTouchHandler.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/RCTSurfaceTouchHandler.mm b/React/Fabric/RCTSurfaceTouchHandler.mm
index 5695211236b24e..14d1a807f8d560 100644
--- a/React/Fabric/RCTSurfaceTouchHandler.mm
+++ b/React/Fabric/RCTSurfaceTouchHandler.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,11 +8,11 @@
 #import "RCTSurfaceTouchHandler.h"
 
 #import <UIKit/UIGestureRecognizerSubclass.h>
-#import <fabric/components/view/ViewEventEmitter.h>
 #import <React/RCTUtils.h>
 #import <React/RCTViewComponentView.h>
 
 #import "RCTConversions.h"
+#import "RCTTouchableComponentViewProtocol.h"
 
 using namespace facebook::react;
 
@@ -46,10 +46,6 @@ void reset() {
   int lastIndex;
 };
 
-@protocol RCTTouchableComponentViewProtocol <NSObject>
-  - (SharedViewEventEmitter)touchEventEmitter;
-@end
-
 typedef NS_ENUM(NSInteger, RCTTouchEventType) {
   RCTTouchEventTypeTouchStart,
   RCTTouchEventTypeTouchMove,
@@ -59,7 +55,7 @@ typedef NS_ENUM(NSInteger, RCTTouchEventType) {
 
 struct ActiveTouch {
   Touch touch;
-  SharedViewEventEmitter eventEmitter;
+  SharedTouchEventEmitter eventEmitter;
 
   struct Hasher {
     size_t operator()(const ActiveTouch &activeTouch) const {
@@ -95,8 +91,8 @@ static ActiveTouch CreateTouchWithUITouch(UITouch *uiTouch, UIView *rootComponen
 
   ActiveTouch activeTouch = {};
 
-  if ([componentView respondsToSelector:@selector(touchEventEmitter)]) {
-    activeTouch.eventEmitter = [(id<RCTTouchableComponentViewProtocol>)componentView touchEventEmitter];
+  if ([componentView respondsToSelector:@selector(touchEventEmitterAtPoint:)]) {
+    activeTouch.eventEmitter = [(id<RCTTouchableComponentViewProtocol>)componentView touchEventEmitterAtPoint:[uiTouch locationInView:componentView]];
     activeTouch.touch.target = (Tag)componentView.tag;
   }
 
@@ -134,7 +130,7 @@ static BOOL AnyTouchesChanged(NSSet<UITouch *> *touches) {
 template<typename PointerT>
 struct PointerHasher {
   constexpr std::size_t operator()(const PointerT &value) const {
-    return reinterpret_cast<size_t>(&value);
+    return reinterpret_cast<size_t>(value);
   }
 };
 
@@ -200,29 +196,39 @@ - (void)_registerTouches:(NSSet<UITouch *> *)touches
 - (void)_updateTouches:(NSSet<UITouch *> *)touches
 {
   for (UITouch *touch in touches) {
-    UpdateActiveTouchWithUITouch(_activeTouches[touch], touch, _rootComponentView);
+    UpdateActiveTouchWithUITouch(_activeTouches.at(touch), touch, _rootComponentView);
   }
 }
 
 - (void)_unregisterTouches:(NSSet<UITouch *> *)touches
 {
   for (UITouch *touch in touches) {
-    const auto &activeTouch = _activeTouches[touch];
+    const auto &activeTouch = _activeTouches.at(touch);
     _identifierPool.enqueue(activeTouch.touch.identifier);
     _activeTouches.erase(touch);
   }
 }
 
-- (void)_dispatchTouches:(NSSet<UITouch *> *)touches eventType:(RCTTouchEventType)eventType
+- (std::vector<ActiveTouch>)_activeTouchesFromTouches:(NSSet<UITouch *> *)touches
+{
+  std::vector<ActiveTouch> activeTouches;
+  activeTouches.reserve(touches.count);
+
+  for (UITouch *touch in touches) {
+    activeTouches.push_back(_activeTouches.at(touch));
+  }
+
+  return activeTouches;
+}
+
+- (void)_dispatchActiveTouches:(std::vector<ActiveTouch>)activeTouches eventType:(RCTTouchEventType)eventType
 {
   TouchEvent event = {};
   std::unordered_set<ActiveTouch, ActiveTouch::Hasher, ActiveTouch::Comparator> changedActiveTouches = {};
-  std::unordered_set<SharedViewEventEmitter> uniqueEventEmitter = {};
+  std::unordered_set<SharedTouchEventEmitter> uniqueEventEmitter = {};
   BOOL isEndishEventType = eventType == RCTTouchEventTypeTouchEnd || eventType == RCTTouchEventTypeTouchCancel;
 
-  for (UITouch *touch in touches) {
-    const auto &activeTouch = _activeTouches[touch];
-
+  for (const auto &activeTouch : activeTouches) {
     if (!activeTouch.eventEmitter) {
       continue;
     }
@@ -280,7 +286,8 @@ - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
   [super touchesBegan:touches withEvent:event];
 
   [self _registerTouches:touches];
-  [self _dispatchTouches:touches eventType:RCTTouchEventTypeTouchStart];
+  [self _dispatchActiveTouches:[self _activeTouchesFromTouches:touches]
+                     eventType:RCTTouchEventTypeTouchStart];
 
   if (self.state == UIGestureRecognizerStatePossible) {
     self.state = UIGestureRecognizerStateBegan;
@@ -294,7 +301,8 @@ - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
   [super touchesMoved:touches withEvent:event];
 
   [self _updateTouches:touches];
-  [self _dispatchTouches:touches eventType:RCTTouchEventTypeTouchMove];
+  [self _dispatchActiveTouches:[self _activeTouchesFromTouches:touches]
+                     eventType:RCTTouchEventTypeTouchMove];
 
   self.state = UIGestureRecognizerStateChanged;
 }
@@ -304,7 +312,8 @@ - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
   [super touchesEnded:touches withEvent:event];
 
   [self _updateTouches:touches];
-  [self _dispatchTouches:touches eventType:RCTTouchEventTypeTouchEnd];
+  [self _dispatchActiveTouches:[self _activeTouchesFromTouches:touches]
+                     eventType:RCTTouchEventTypeTouchEnd];
   [self _unregisterTouches:touches];
 
   if (AllTouchesAreCancelledOrEnded(event.allTouches)) {
@@ -319,7 +328,8 @@ - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
   [super touchesCancelled:touches withEvent:event];
 
   [self _updateTouches:touches];
-  [self _dispatchTouches:touches eventType:RCTTouchEventTypeTouchCancel];
+  [self _dispatchActiveTouches:[self _activeTouchesFromTouches:touches]
+                     eventType:RCTTouchEventTypeTouchCancel];
   [self _unregisterTouches:touches];
 
   if (AllTouchesAreCancelledOrEnded(event.allTouches)) {
@@ -331,10 +341,23 @@ - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
 
 - (void)reset
 {
-  // Technically, `_activeTouches` must be already empty at this point,
-  // but just to be sure, we clear it explicitly.
-  _activeTouches.clear();
-  _identifierPool.reset();
+  [super reset];
+
+  if (_activeTouches.size() != 0) {
+    std::vector<ActiveTouch> activeTouches;
+    activeTouches.reserve(_activeTouches.size());
+
+    for (auto const &pair : _activeTouches) {
+      activeTouches.push_back(pair.second);
+    }
+
+    [self _dispatchActiveTouches:activeTouches
+                       eventType:RCTTouchEventTypeTouchCancel];
+
+    // Force-unregistering all the touches.
+    _activeTouches.clear();
+    _identifierPool.reset();
+  }
 }
 
 - (BOOL)canPreventGestureRecognizer:(__unused UIGestureRecognizer *)preventedGestureRecognizer
diff --git a/React/Fabric/RCTTouchableComponentViewProtocol.h b/React/Fabric/RCTTouchableComponentViewProtocol.h
new file mode 100644
index 00000000000000..b1142b050c705a
--- /dev/null
+++ b/React/Fabric/RCTTouchableComponentViewProtocol.h
@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <UIKit/UIKit.h>
+#import <react/components/view/TouchEventEmitter.h>
+
+@protocol RCTTouchableComponentViewProtocol <NSObject>
+- (facebook::react::SharedTouchEventEmitter)touchEventEmitterAtPoint:(CGPoint)point;
+@end
diff --git a/React/Fabric/Surface/RCTFabricSurface.h b/React/Fabric/Surface/RCTFabricSurface.h
index 6669cc35f1903f..41ca6e58973a24 100644
--- a/React/Fabric/Surface/RCTFabricSurface.h
+++ b/React/Fabric/Surface/RCTFabricSurface.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -43,10 +43,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property (atomic, copy, readwrite) NSDictionary *properties;
 
-- (instancetype)initWithBridge:(RCTBridge *)bridge
-                    moduleName:(NSString *)moduleName
-             initialProperties:(NSDictionary *)initialProperties;
-
 - (instancetype)initWithSurfacePresenter:(RCTSurfacePresenter *)surfacePresenter
                               moduleName:(NSString *)moduleName
                        initialProperties:(NSDictionary *)initialProperties;
@@ -67,6 +63,22 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (RCTSurfaceView *)view;
 
+#pragma mark - Start & Stop
+
+/**
+ * Starts or stops the Surface.
+ * A Surface object can be stopped and then restarted.
+ * The starting process includes initializing all underlying React Native
+ * infrastructure and running React app.
+ * Just initialized Surface object starts automatically, there is no need
+ * to call `start` explicitly. Surface also stops itself on deallocation
+ * automatically.
+ * Returns YES in case of success. Returns NO if the Surface is already
+ * started or stopped.
+ */
+- (BOOL)start;
+- (BOOL)stop;
+
 #pragma mark - Layout: Setting the size constrains
 
 /**
@@ -120,12 +132,24 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface RCTFabricSurface (Internal)
 
-- (void)_setStage:(RCTSurfaceStage)stage;
+/**
+ * Sets and clears given stage flags (bitmask).
+ * Returns `YES` if the actual state was changed.
+ */
+- (BOOL)_setStage:(RCTSurfaceStage)stage;
+- (BOOL)_unsetStage:(RCTSurfaceStage)stage;
 
 @end
 
 @interface RCTFabricSurface (Deprecated)
 
+/**
+ * Deprecated. Use `initWithSurfacePresenter:moduleName:initialProperties` instead.
+ */
+- (instancetype)initWithBridge:(RCTBridge *)bridge
+                    moduleName:(NSString *)moduleName
+             initialProperties:(NSDictionary *)initialProperties;
+
 /**
  * Deprecated. Use `rootTag` instead.
  */
diff --git a/React/Fabric/Surface/RCTFabricSurface.mm b/React/Fabric/Surface/RCTFabricSurface.mm
index 243f38c3d9bbba..bf067994618ef2 100644
--- a/React/Fabric/Surface/RCTFabricSurface.mm
+++ b/React/Fabric/Surface/RCTFabricSurface.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,22 +7,18 @@
 
 #import "RCTFabricSurface.h"
 
-#import <React/RCTSurfaceView+Internal.h>
-
 #import <mutex>
-#import <stdatomic.h>
 
 #import <React/RCTAssert.h>
-#import <React/RCTBridge.h>
 #import <React/RCTSurfaceDelegate.h>
 #import <React/RCTSurfaceRootView.h>
 #import <React/RCTSurfaceView.h>
+#import <React/RCTSurfaceView+Internal.h>
 #import <React/RCTSurfaceTouchHandler.h>
 #import <React/RCTUIManagerUtils.h>
 #import <React/RCTUtils.h>
 
 #import "RCTSurfacePresenter.h"
-#import "RCTMountingManager.h"
 
 @implementation RCTFabricSurface {
   // Immutable
@@ -42,19 +38,6 @@ @implementation RCTFabricSurface {
   RCTSurfaceTouchHandler *_Nullable _touchHandler;
 }
 
-- (instancetype)initWithBridge:(RCTBridge *)bridge
-                    moduleName:(NSString *)moduleName
-             initialProperties:(NSDictionary *)initialProperties
-{
-  RCTAssert(bridge.valid, @"Valid bridge is required to instanciate `RCTSurface`.");
-
-  self = [self initWithSurfacePresenter:bridge.surfacePresenter
-                             moduleName:moduleName
-                      initialProperties:initialProperties];
-
-  return self;
-}
-
 - (instancetype)initWithSurfacePresenter:(RCTSurfacePresenter *)surfacePresenter
                               moduleName:(NSString *)moduleName
                        initialProperties:(NSDictionary *)initialProperties
@@ -66,35 +49,42 @@ - (instancetype)initWithSurfacePresenter:(RCTSurfacePresenter *)surfacePresenter
     _rootTag = [RCTAllocateRootViewTag() integerValue];
 
     _minimumSize = CGSizeZero;
-    _maximumSize = CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX);
+    // FIXME: Replace with `_maximumSize = CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX);`.
+    _maximumSize = RCTScreenSize();
+
+    _touchHandler = [RCTSurfaceTouchHandler new];
 
     _stage = RCTSurfaceStageSurfaceDidInitialize;
 
-    _touchHandler = [RCTSurfaceTouchHandler new];
+    [self start];
+  }
+
+  return self;
+}
 
-    [self _run];
+- (BOOL)start
+{
+  if (![self _setStage:RCTSurfaceStageStarted]) {
+    return NO;
+  }
 
-    // TODO: This will be moved to RCTSurfacePresenter.
-    RCTBridge *bridge = surfacePresenter.bridge_DO_NOT_USE;
+  [_surfacePresenter registerSurface:self];
+  return YES;
+}
 
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(handleJavaScriptWillStartLoadingNotification:)
-                                                 name:RCTJavaScriptWillStartLoadingNotification
-                                               object:bridge];
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(handleJavaScriptDidLoadNotification:)
-                                                 name:RCTJavaScriptDidLoadNotification
-                                               object:bridge];
+- (BOOL)stop
+{
+  if (![self _unsetStage:RCTSurfaceStageStarted]) {
+    return NO;
   }
 
-  return self;
+  [_surfacePresenter unregisterSurface:self];
+  return YES;
 }
 
 - (void)dealloc
 {
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-
-  [self _stop];
+  [self stop];
 }
 
 #pragma mark - Immutable Properties (no need to enforce synchonization)
@@ -104,11 +94,6 @@ - (NSString *)moduleName
   return _moduleName;
 }
 
-- (NSNumber *)rootViewTag
-{
-  return @(_rootTag);
-}
-
 #pragma mark - Main-Threaded Routines
 
 - (RCTSurfaceView *)view
@@ -131,21 +116,37 @@ - (RCTSurfaceStage)stage
   return _stage;
 }
 
-- (void)_setStage:(RCTSurfaceStage)stage
+- (BOOL)_setStage:(RCTSurfaceStage)stage
+{
+  return [self _setStage:stage setOrUnset:YES];
+}
+
+- (BOOL)_unsetStage:(RCTSurfaceStage)stage
+{
+  return [self _setStage:stage setOrUnset:NO];
+}
+
+- (BOOL)_setStage:(RCTSurfaceStage)stage setOrUnset:(BOOL)setOrUnset
 {
   RCTSurfaceStage updatedStage;
   {
     std::lock_guard<std::mutex> lock(_mutex);
 
-    if (_stage & stage) {
-      return;
+    if (setOrUnset) {
+      updatedStage = (RCTSurfaceStage)(_stage | stage);
+    } else {
+      updatedStage = (RCTSurfaceStage)(_stage & ~stage);
+    }
+
+    if (updatedStage == _stage) {
+      return NO;
     }
 
-    updatedStage = (RCTSurfaceStage)(_stage | stage);
     _stage = updatedStage;
   }
 
   [self _propagateStageChange:updatedStage];
+  return YES;
 }
 
 - (void)_propagateStageChange:(RCTSurfaceStage)stage
@@ -182,21 +183,7 @@ - (void)setProperties:(NSDictionary *)properties
     _properties = [properties copy];
   }
 
-  [self _run];
-}
-
-#pragma mark - Running
-
-- (void)_run
-{
-  [_surfacePresenter registerSurface:self];
-  [self _setStage:RCTSurfaceStageSurfaceDidRun];
-}
-
-- (void)_stop
-{
-  [_surfacePresenter unregisterSurface:self];
-  [self _setStage:RCTSurfaceStageSurfaceDidStop];
+  [_surfacePresenter setProps:properties surface:self];
 }
 
 #pragma mark - Layout
@@ -230,9 +217,9 @@ - (void)setMinimumSize:(CGSize)minimumSize
     _minimumSize = minimumSize;
   }
 
-  return [_surfacePresenter setMinimumSize:minimumSize
-                               maximumSize:maximumSize
-                                   surface:self];
+  [_surfacePresenter setMinimumSize:minimumSize
+                        maximumSize:maximumSize
+                            surface:self];
 }
 
 - (CGSize)minimumSize
@@ -281,41 +268,20 @@ - (BOOL)synchronouslyWaitForStage:(RCTSurfaceStage)stage timeout:(NSTimeInterval
   return NO;
 }
 
-#pragma mark - Bridge events
+#pragma mark - Deprecated
 
-- (void)handleJavaScriptWillStartLoadingNotification:(NSNotification *)notification
+- (instancetype)initWithBridge:(RCTBridge *)bridge
+                    moduleName:(NSString *)moduleName
+             initialProperties:(NSDictionary *)initialProperties
 {
-  // TODO: Move the bridge lifecycle handling up to the RCTSurfacePresenter.
-
-  RCTAssertMainQueue();
-
-  // Reset states because the bridge is reloading. This is similar to initialization phase.
-  _stage = RCTSurfaceStageSurfaceDidInitialize;
-  _view = nil;
-  _touchHandler = [RCTSurfaceTouchHandler new];
-  [self _setStage:RCTSurfaceStageBridgeDidLoad];
+  return [self initWithSurfacePresenter:bridge.surfacePresenter
+                             moduleName:moduleName
+                      initialProperties:initialProperties];
 }
 
-- (void)handleJavaScriptDidLoadNotification:(NSNotification *)notification
+- (NSNumber *)rootViewTag
 {
-  // TODO: Move the bridge lifecycle handling up to the RCTSurfacePresenter.
-
-  // Note: this covers both JS reloads and initial load after the bridge starts.
-  // When it's not a reload, surface should already be running since we run it immediately in the initializer, so do
-  // nothing.
-  // When it's a reload, we rely on the `RCTJavaScriptWillStartLoadingNotification` notification to reset the stage,
-  // then we need to run the surface and update its size.
-  if (!RCTSurfaceStageIsRunning(_stage)) {
-    [self _setStage:RCTSurfaceStageModuleDidLoad];
-    [self _run];
-
-    // After a reload surfacePresenter needs to know the last min/max size for this surface, because the surface hosting
-    // view was already attached to the ViewController's view.
-    // TODO: Find a better automatic way.
-    [_surfacePresenter setMinimumSize:_minimumSize
-                          maximumSize:_maximumSize
-                              surface:self];
-  }
+  return @(_rootTag);
 }
 
 @end
diff --git a/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.h b/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.h
index 3214426e77d680..53260fcf9028fd 100644
--- a/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.h
+++ b/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.mm b/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.mm
index e2210daf8cd238..115c7e2e03dde6 100644
--- a/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.mm
+++ b/React/Fabric/Surface/RCTFabricSurfaceHostingProxyRootView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,7 @@
 
 @implementation RCTFabricSurfaceHostingProxyRootView
 
-- (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge moduleName:(NSString *)moduleName initialProperties:(NSDictionary *)initialProperties
++ (RCTSurface *)createSurfaceWithBridge:(RCTBridge *)bridge moduleName:(NSString *)moduleName initialProperties:(NSDictionary *)initialProperties
 {
   return (RCTSurface *)[[RCTFabricSurface alloc] initWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
 }
diff --git a/React/Fabric/Surface/RCTFabricSurfaceHostingView.h b/React/Fabric/Surface/RCTFabricSurfaceHostingView.h
index c50fa51acee97a..8dbe3086944419 100644
--- a/React/Fabric/Surface/RCTFabricSurfaceHostingView.h
+++ b/React/Fabric/Surface/RCTFabricSurfaceHostingView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Surface/RCTFabricSurfaceHostingView.mm b/React/Fabric/Surface/RCTFabricSurfaceHostingView.mm
index 0157c974b3fd74..30cff6d449f5f4 100644
--- a/React/Fabric/Surface/RCTFabricSurfaceHostingView.mm
+++ b/React/Fabric/Surface/RCTFabricSurfaceHostingView.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Utils/MainQueueExecutor.h b/React/Fabric/Utils/MainQueueExecutor.h
index b43a6d7cdb4c31..fabd81e895ac8d 100644
--- a/React/Fabric/Utils/MainQueueExecutor.h
+++ b/React/Fabric/Utils/MainQueueExecutor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Utils/MainQueueExecutor.mm b/React/Fabric/Utils/MainQueueExecutor.mm
index a80d3be1b3e561..5cc411b3d7de72 100644
--- a/React/Fabric/Utils/MainQueueExecutor.mm
+++ b/React/Fabric/Utils/MainQueueExecutor.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Fabric/Utils/MainRunLoopEventBeat.h b/React/Fabric/Utils/MainRunLoopEventBeat.h
new file mode 100644
index 00000000000000..30f9941e49ae78
--- /dev/null
+++ b/React/Fabric/Utils/MainRunLoopEventBeat.h
@@ -0,0 +1,37 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#pragma once
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFRunLoop.h>
+#include <react/uimanager/primitives.h>
+#include <react/events/EventBeat.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event beat associated with main run loop cycle.
+ * The callback is always called on the main thread.
+ */
+class MainRunLoopEventBeat final:
+  public EventBeat {
+
+public:
+  MainRunLoopEventBeat(RuntimeExecutor runtimeExecutor);
+  ~MainRunLoopEventBeat();
+
+  void induce() const override;
+
+private:
+  void lockExecutorAndBeat() const;
+
+  const RuntimeExecutor runtimeExecutor_;
+  CFRunLoopObserverRef mainRunLoopObserver_;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/React/Fabric/Utils/MainRunLoopEventBeat.mm b/React/Fabric/Utils/MainRunLoopEventBeat.mm
new file mode 100644
index 00000000000000..d3bf8d553c5964
--- /dev/null
+++ b/React/Fabric/Utils/MainRunLoopEventBeat.mm
@@ -0,0 +1,81 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#import "MainRunLoopEventBeat.h"
+
+#import <mutex>
+#import <React/RCTUtils.h>
+
+namespace facebook {
+namespace react {
+
+MainRunLoopEventBeat::MainRunLoopEventBeat(RuntimeExecutor runtimeExecutor):
+  runtimeExecutor_(std::move(runtimeExecutor)) {
+
+  mainRunLoopObserver_ =
+    CFRunLoopObserverCreateWithHandler(
+      NULL /* allocator */,
+      kCFRunLoopBeforeWaiting /* activities */,
+      true /* repeats */,
+      0 /* order */,
+      ^(CFRunLoopObserverRef observer, CFRunLoopActivity activity) {
+        if (!this->isRequested_) {
+          return;
+        }
+
+        this->lockExecutorAndBeat();
+      }
+  );
+
+  assert(mainRunLoopObserver_);
+
+  CFRunLoopAddObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
+}
+
+MainRunLoopEventBeat::~MainRunLoopEventBeat() {
+  CFRunLoopRemoveObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
+  CFRelease(mainRunLoopObserver_);
+}
+
+void MainRunLoopEventBeat::induce() const {
+  if (!this->isRequested_) {
+    return;
+  }
+
+  RCTExecuteOnMainQueue(^{
+    this->lockExecutorAndBeat();
+  });
+}
+
+void MainRunLoopEventBeat::lockExecutorAndBeat() const {
+  // Note: We need the third mutex to get back to the main thread before
+  // the lambda is finished (because all mutexes are allocated on the stack).
+
+  std::mutex mutex1;
+  std::mutex mutex2;
+  std::mutex mutex3;
+
+  mutex1.lock();
+  mutex2.lock();
+  mutex3.lock();
+
+  jsi::Runtime *runtimePtr;
+
+  runtimeExecutor_([&](jsi::Runtime &runtime) {
+    runtimePtr = &runtime;
+    mutex1.unlock();
+    // `beat` is called somewhere here.
+    mutex2.lock();
+    mutex3.unlock();
+  });
+
+  mutex1.lock();
+  beat(*runtimePtr);
+  mutex2.unlock();
+  mutex3.lock();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/React/Fabric/Utils/RuntimeEventBeat.h b/React/Fabric/Utils/RuntimeEventBeat.h
new file mode 100644
index 00000000000000..1cb20e10ba0955
--- /dev/null
+++ b/React/Fabric/Utils/RuntimeEventBeat.h
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFRunLoop.h>
+#include <react/uimanager/primitives.h>
+#include <react/events/EventBeat.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event beat associated with JavaScript runtime.
+ * The beat is called on `RuntimeExecutor`'s thread induced by the main thread
+ * event loop.
+ */
+class RuntimeEventBeat:
+  public EventBeat {
+
+public:
+  RuntimeEventBeat(RuntimeExecutor runtimeExecutor);
+  ~RuntimeEventBeat();
+
+  void induce() const override;
+
+private:
+  const RuntimeExecutor runtimeExecutor_;
+  CFRunLoopObserverRef mainRunLoopObserver_;
+  mutable std::atomic<bool> isBusy_ {false};
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/React/Fabric/Utils/RuntimeEventBeat.mm b/React/Fabric/Utils/RuntimeEventBeat.mm
new file mode 100644
index 00000000000000..042fe8ed16f572
--- /dev/null
+++ b/React/Fabric/Utils/RuntimeEventBeat.mm
@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "RuntimeEventBeat.h"
+
+namespace facebook {
+namespace react {
+
+RuntimeEventBeat::RuntimeEventBeat(RuntimeExecutor runtimeExecutor):
+  runtimeExecutor_(std::move(runtimeExecutor)) {
+
+  mainRunLoopObserver_ =
+    CFRunLoopObserverCreateWithHandler(
+      NULL /* allocator */,
+      kCFRunLoopBeforeWaiting /* activities */,
+      true /* repeats */,
+      0 /* order */,
+      ^(CFRunLoopObserverRef observer, CFRunLoopActivity activity) {
+        // Note: We only `induce` beat here; actual beat will be performed on
+        // a different thread.
+        this->induce();
+      }
+  );
+
+  assert(mainRunLoopObserver_);
+
+  CFRunLoopAddObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
+}
+
+RuntimeEventBeat::~RuntimeEventBeat() {
+  CFRunLoopRemoveObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
+  CFRelease(mainRunLoopObserver_);
+}
+
+void RuntimeEventBeat::induce() const {
+  if (!isRequested_ || isBusy_) {
+    return;
+  }
+
+#ifndef NDEBUG
+  // We do a trick here.
+  // If `wasExecuted` was destroyed before set to `true`,
+  // it means that the execution block was deallocated not being executed.
+  // This indicates that `messageQueueThread_` is being deallocated.
+  // This trick is quite expensive due to deallocation and messing with atomic
+  // counters. Seems we need this only for making hot-reloading mechanism
+  // thread-safe. Hence, let's leave it to be DEBUG-only for now.
+  auto wasExecuted = std::shared_ptr<bool>(new bool {false}, [this](bool *wasExecuted) {
+    if (!*wasExecuted && failCallback_) {
+      failCallback_();
+    }
+    delete wasExecuted;
+  });
+#endif
+
+  isBusy_ = true;
+  runtimeExecutor_([=](jsi::Runtime &runtime) mutable {
+    this->beat(runtime);
+    isBusy_ = false;
+#ifndef NDEBUG
+    *wasExecuted = true;
+#endif
+  });
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/React/Inspector/RCTInspector.h b/React/Inspector/RCTInspector.h
index e653f917886f21..d346934efdd9e3 100644
--- a/React/Inspector/RCTInspector.h
+++ b/React/Inspector/RCTInspector.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/React/Inspector/RCTInspector.mm b/React/Inspector/RCTInspector.mm
index 0bb83db45675ab..32201f76086fd6 100644
--- a/React/Inspector/RCTInspector.mm
+++ b/React/Inspector/RCTInspector.mm
@@ -1,9 +1,12 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
 
 #import "RCTInspector.h"
 
 #if RCT_DEV
 
-#include <jschelpers/JavaScriptCore.h>
 #include <jsinspector/InspectorInterfaces.h>
 
 #import "RCTDefines.h"
diff --git a/React/Inspector/RCTInspectorPackagerConnection.h b/React/Inspector/RCTInspectorPackagerConnection.h
index ad15e043c30781..2259293635db90 100644
--- a/React/Inspector/RCTInspectorPackagerConnection.h
+++ b/React/Inspector/RCTInspectorPackagerConnection.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/React/Inspector/RCTInspectorPackagerConnection.m b/React/Inspector/RCTInspectorPackagerConnection.m
index 8852d921bcd4d2..d3d97d0eaf6097 100644
--- a/React/Inspector/RCTInspectorPackagerConnection.m
+++ b/React/Inspector/RCTInspectorPackagerConnection.m
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 #import "RCTInspectorPackagerConnection.h"
 
 #if RCT_DEV
@@ -196,7 +201,7 @@ - (void)webSocket:(RCTSRWebSocket *)webSocket didFailWithError:(NSError *)error
     [self abort:@"Websocket exception"
       withCause:error];
   }
-  if (!_closed) {
+  if (!_closed && [error code] != ECONNREFUSED) {
     [self reconnect];
   }
 }
diff --git a/React/Modules/RCTAccessibilityManager.h b/React/Modules/RCTAccessibilityManager.h
index 0e153afbfb7e0e..35f03280e47f3c 100644
--- a/React/Modules/RCTAccessibilityManager.h
+++ b/React/Modules/RCTAccessibilityManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAccessibilityManager.m b/React/Modules/RCTAccessibilityManager.m
index a84b75bcdbd1cc..7cb45a08966a57 100644
--- a/React/Modules/RCTAccessibilityManager.m
+++ b/React/Modules/RCTAccessibilityManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAlertManager.h b/React/Modules/RCTAlertManager.h
index 8bcb8d3b6b7619..2bf1f9edbfb8b3 100644
--- a/React/Modules/RCTAlertManager.h
+++ b/React/Modules/RCTAlertManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAlertManager.m b/React/Modules/RCTAlertManager.m
index 1c9ac20e6ef133..ee9ba3f51eaaf3 100644
--- a/React/Modules/RCTAlertManager.m
+++ b/React/Modules/RCTAlertManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAppState.h b/React/Modules/RCTAppState.h
index 7d56cab63ab34e..9f8f9987a4aca1 100644
--- a/React/Modules/RCTAppState.h
+++ b/React/Modules/RCTAppState.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAppState.m b/React/Modules/RCTAppState.m
index 8471f4e05f1dec..773debc9a51fd0 100644
--- a/React/Modules/RCTAppState.m
+++ b/React/Modules/RCTAppState.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAsyncLocalStorage.h b/React/Modules/RCTAsyncLocalStorage.h
index 446a54f76218ba..386f9f5ed99e87 100644
--- a/React/Modules/RCTAsyncLocalStorage.h
+++ b/React/Modules/RCTAsyncLocalStorage.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTAsyncLocalStorage.m b/React/Modules/RCTAsyncLocalStorage.m
index 5c135d26001313..d6cdc359665828 100644
--- a/React/Modules/RCTAsyncLocalStorage.m
+++ b/React/Modules/RCTAsyncLocalStorage.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTClipboard.h b/React/Modules/RCTClipboard.h
index 317716816291fb..49374d0ab291bf 100644
--- a/React/Modules/RCTClipboard.h
+++ b/React/Modules/RCTClipboard.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTClipboard.m b/React/Modules/RCTClipboard.m
index 2854c86a3dbdbf..80abb65c9c96f6 100644
--- a/React/Modules/RCTClipboard.m
+++ b/React/Modules/RCTClipboard.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTDevSettings.h b/React/Modules/RCTDevSettings.h
index 0533eb44c95558..c98ccc6f1c67ac 100644
--- a/React/Modules/RCTDevSettings.h
+++ b/React/Modules/RCTDevSettings.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -79,11 +79,6 @@
  */
 - (void)toggleElementInspector;
 
-/**
- * Toggle JSC's sampling profiler.
- */
-- (void)toggleJSCSamplingProfiler;
-
 /**
  * Enables starting of profiling sampler on launch
  */
diff --git a/React/Modules/RCTDevSettings.mm b/React/Modules/RCTDevSettings.mm
index e9b458375d26e4..045f73f7f1fd68 100644
--- a/React/Modules/RCTDevSettings.mm
+++ b/React/Modules/RCTDevSettings.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,14 +9,9 @@
 
 #import <objc/runtime.h>
 
-#import <JavaScriptCore/JavaScriptCore.h>
-
-#import <jschelpers/JavaScriptCore.h>
-
 #import "RCTBridge+Private.h"
 #import "RCTBridgeModule.h"
 #import "RCTEventDispatcher.h"
-#import "RCTJSCSamplingProfiler.h"
 #import "RCTLog.h"
 #import "RCTProfile.h"
 #import "RCTUtils.h"
@@ -30,7 +25,6 @@
 static NSString *const kRCTDevSettingExecutorOverrideClass = @"executor-override";
 static NSString *const kRCTDevSettingShakeToShowDevMenu = @"shakeToShow";
 static NSString *const kRCTDevSettingIsPerfMonitorShown = @"RCTPerfMonitorKey";
-static NSString *const kRCTDevSettingStartSamplingProfilerOnLaunch = @"startSamplingProfilerOnLaunch";
 
 static NSString *const kRCTDevSettingsUserDefaultsKey = @"RCTDevMenu";
 
@@ -41,7 +35,6 @@
 
 #if RCT_ENABLE_INSPECTOR
 #import "RCTInspectorDevServerHelper.h"
-#import <jschelpers/JSCWrapper.h>
 #endif
 
 #if RCT_DEV
@@ -113,7 +106,6 @@ @interface RCTDevSettings () <RCTBridgeModule, RCTInvalidating>
   BOOL _isJSLoaded;
 #if ENABLE_PACKAGER_CONNECTION
   RCTHandlerToken _reloadToken;
-  RCTHandlerToken _pokeSamplingProfilerToken;
 #endif
 }
 
@@ -181,14 +173,6 @@ - (void)setBridge:(RCTBridge *)bridge
    }
    queue:dispatch_get_main_queue()
    forMethod:@"reload"];
-
-  _pokeSamplingProfilerToken =
-  [[RCTPackagerConnection sharedPackagerConnection]
-   addRequestHandler:^(NSDictionary<NSString *, id> *params, RCTPackagerClientResponder *responder) {
-     pokeSamplingProfiler(weakBridge, responder);
-   }
-   queue:dispatch_get_main_queue()
-   forMethod:@"pokeSamplingProfiler"];
 #endif
 
 #if DEBUG && RCT_ENABLE_INSPECTOR // TODO(OSS Candidate ISS#2710739)
@@ -205,32 +189,6 @@ - (void)setBridge:(RCTBridge *)bridge
 #endif
 }
 
-#if ENABLE_PACKAGER_CONNECTION
-static void pokeSamplingProfiler(RCTBridge *const bridge, RCTPackagerClientResponder *const responder)
-{
-  if (!bridge) {
-    [responder respondWithError:@"The bridge is nil. Try again."];
-    return;
-  }
-
-  JSGlobalContextRef globalContext = bridge.jsContextRef;
-  if (!JSC_JSSamplingProfilerEnabled(globalContext)) {
-    [responder respondWithError:@"The JSSamplingProfiler is disabled. See 'iOS specific setup' section here https://fburl.com/u4lw7xeq for some help"];
-    return;
-  }
-
-  // JSPokeSamplingProfiler() toggles the profiling process
-  JSValueRef jsResult = JSC_JSPokeSamplingProfiler(globalContext);
-  if (JSC_JSValueGetType(globalContext, jsResult) == kJSTypeNull) {
-    [responder respondWithResult:@"started"];
-  } else {
-    JSContext *context = [JSC_JSContext(globalContext) contextWithJSGlobalContextRef:globalContext];
-    NSString *results = [[JSC_JSValue(globalContext) valueWithJSValueRef:jsResult inContext:context] toObject];
-    [responder respondWithResult:results];
-  }
-}
-#endif
-
 - (dispatch_queue_t)methodQueue
 {
   return dispatch_get_main_queue();
@@ -241,7 +199,6 @@ - (void)invalidate
   [_liveReloadUpdateTask cancel];
 #if ENABLE_PACKAGER_CONNECTION
   [[RCTPackagerConnection sharedPackagerConnection] removeHandler:_reloadToken];
-  [[RCTPackagerConnection sharedPackagerConnection] removeHandler:_pokeSamplingProfilerToken];
 #endif
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
@@ -293,11 +250,6 @@ - (BOOL)isLiveReloadAvailable
   return (_liveReloadURL != nil);
 }
 
-- (BOOL)isJSCSamplingProfilerAvailable
-{
-  return JSC_JSSamplingProfilerEnabled(_bridge.jsContextRef);
-}
-
 RCT_EXPORT_METHOD(reload)
 {
   [_bridge reload];
@@ -410,20 +362,6 @@ - (BOOL)isHotLoadingEnabled
   }
 }
 
-- (void)toggleJSCSamplingProfiler
-{
-  JSGlobalContextRef globalContext = _bridge.jsContextRef;
-  // JSPokeSamplingProfiler() toggles the profiling process
-  JSValueRef jsResult = JSC_JSPokeSamplingProfiler(globalContext);
-
-  if (JSC_JSValueGetType(globalContext, jsResult) != kJSTypeNull) {
-    JSContext *context = [JSC_JSContext(globalContext) contextWithJSGlobalContextRef:globalContext];
-    NSString *results = [[JSC_JSValue(globalContext) valueWithJSValueRef:jsResult inContext:context] toObject];
-    RCTJSCSamplingProfiler *profilerModule = [_bridge moduleForClass:[RCTJSCSamplingProfiler class]];
-    [profilerModule operationCompletedWithResults:results];
-  }
-}
-
 - (BOOL)isElementInspectorShown
 {
   return [[self settingForKey:kRCTDevSettingIsInspectorShown] boolValue];
@@ -439,16 +377,6 @@ - (BOOL)isPerfMonitorShown
   return [[self settingForKey:kRCTDevSettingIsPerfMonitorShown] boolValue];
 }
 
-- (void)setStartSamplingProfilerOnLaunch:(BOOL)startSamplingProfilerOnLaunch
-{
-  [self _updateSettingWithValue:@(startSamplingProfilerOnLaunch) forKey:kRCTDevSettingStartSamplingProfilerOnLaunch];
-}
-
-- (BOOL)startSamplingProfilerOnLaunch
-{
-  return [[self settingForKey:kRCTDevSettingStartSamplingProfilerOnLaunch] boolValue];
-}
-
 - (void)setExecutorClass:(Class)executorClass
 {
   _executorClass = executorClass;
@@ -570,7 +498,6 @@ - (BOOL)isRemoteDebuggingAvailable { return NO; }
 - (id)settingForKey:(NSString *)key { return nil; }
 - (void)reload {}
 - (void)toggleElementInspector {}
-- (void)toggleJSCSamplingProfiler {}
 
 @end
 
diff --git a/React/Modules/RCTDeviceInfo.h b/React/Modules/RCTDeviceInfo.h
index 8d60e7afbdf682..b68e34b7f725e3 100644
--- a/React/Modules/RCTDeviceInfo.h
+++ b/React/Modules/RCTDeviceInfo.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTDeviceInfo.m b/React/Modules/RCTDeviceInfo.m
index fd8dc479b8d087..43ac188378795e 100644
--- a/React/Modules/RCTDeviceInfo.m
+++ b/React/Modules/RCTDeviceInfo.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -66,10 +66,15 @@ static BOOL RCTIsIPhoneX() {
   dispatch_once(&onceToken, ^{
     RCTAssertMainQueue();
 
-    isIPhoneX = CGSizeEqualToSize(
-      [UIScreen mainScreen].nativeBounds.size,
-      CGSizeMake(1125, 2436)
-    );
+    CGSize screenSize = [UIScreen mainScreen].nativeBounds.size;
+    CGSize iPhoneXScreenSize = CGSizeMake(1125, 2436);
+    CGSize iPhoneXMaxScreenSize = CGSizeMake(1242, 2688);
+    CGSize iPhoneXRScreenSize = CGSizeMake(828, 1792);
+
+    isIPhoneX =
+      CGSizeEqualToSize(screenSize, iPhoneXScreenSize) ||
+      CGSizeEqualToSize(screenSize, iPhoneXMaxScreenSize) ||
+      CGSizeEqualToSize(screenSize, iPhoneXRScreenSize);
   });
 #endif // TODO(macOS ISS#2323203)
   return isIPhoneX;
diff --git a/React/Modules/RCTEventEmitter.h b/React/Modules/RCTEventEmitter.h
index 3192d473cf07aa..3507c78e33ea23 100644
--- a/React/Modules/RCTEventEmitter.h
+++ b/React/Modules/RCTEventEmitter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTEventEmitter.m b/React/Modules/RCTEventEmitter.m
index 1b4478566d4776..01116f89e1f8e8 100644
--- a/React/Modules/RCTEventEmitter.m
+++ b/React/Modules/RCTEventEmitter.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTExceptionsManager.h b/React/Modules/RCTExceptionsManager.h
index 950cdaeab29623..3574bc71b4c3d3 100644
--- a/React/Modules/RCTExceptionsManager.h
+++ b/React/Modules/RCTExceptionsManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTExceptionsManager.m b/React/Modules/RCTExceptionsManager.m
index 192675bf39af1c..5108f36ebc8648 100644
--- a/React/Modules/RCTExceptionsManager.m
+++ b/React/Modules/RCTExceptionsManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTI18nManager.h b/React/Modules/RCTI18nManager.h
index c99a3b1ac56bcf..b4afa99586ffb7 100644
--- a/React/Modules/RCTI18nManager.h
+++ b/React/Modules/RCTI18nManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTI18nManager.m b/React/Modules/RCTI18nManager.m
index 4059ea5d85aa70..c58d4a78c78434 100644
--- a/React/Modules/RCTI18nManager.m
+++ b/React/Modules/RCTI18nManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTI18nUtil.h b/React/Modules/RCTI18nUtil.h
index 967e90d4c9089d..791d911e077122 100644
--- a/React/Modules/RCTI18nUtil.h
+++ b/React/Modules/RCTI18nUtil.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTI18nUtil.m b/React/Modules/RCTI18nUtil.m
index 4e8230079ca75e..c9cba32d3b65fe 100644
--- a/React/Modules/RCTI18nUtil.m
+++ b/React/Modules/RCTI18nUtil.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTJSCSamplingProfiler.h b/React/Modules/RCTJSCSamplingProfiler.h
deleted file mode 100644
index 8facaa674c6ad2..00000000000000
--- a/React/Modules/RCTJSCSamplingProfiler.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import <Foundation/Foundation.h>
-
-#import <React/RCTBridgeModule.h>
-
-@interface RCTJSCSamplingProfiler : NSObject <RCTBridgeModule>
-
-/**
- * Receives a JSON string containing the result of a JSC CPU Profiling run,
- *  and sends them to the packager to be symbolicated and saved to disk.
- * It is safe to call this method from any thread.
- */
-- (void)operationCompletedWithResults:(NSString *)results;
-
-@end
diff --git a/React/Modules/RCTJSCSamplingProfiler.m b/React/Modules/RCTJSCSamplingProfiler.m
deleted file mode 100644
index 1d06e053829591..00000000000000
--- a/React/Modules/RCTJSCSamplingProfiler.m
+++ /dev/null
@@ -1,59 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import "RCTJSCSamplingProfiler.h"
-
-#import "RCTBridge.h"
-#import "RCTLog.h"
-
-@implementation RCTJSCSamplingProfiler
-
-@synthesize methodQueue = _methodQueue;
-@synthesize bridge = _bridge;
-
-RCT_EXPORT_MODULE(RCTJSCSamplingProfiler);
-
-#ifdef RCT_PROFILE
-RCT_EXPORT_METHOD(operationComplete:(__unused int)token result:(id)profileData error:(id)error)
-{
-  if (error) {
-    RCTLogError(@"JSC Sampling profiler ended with error: %@", error);
-    return;
-  }
-
-  // Create a POST request with all of the datas
-  NSURL *url = [NSURL URLWithString:@"/jsc-profile" relativeToURL:self.bridge.bundleURL];
-  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
-                                                         cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
-                                                     timeoutInterval:60];
-  [request setHTTPMethod:@"POST"];
-  [request setHTTPBody:[profileData dataUsingEncoding:NSUTF8StringEncoding]];
-
-  // Send the request
-  NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
-  NSURLSessionDataTask *sessionDataTask = [session dataTaskWithRequest:request completionHandler:^(__unused NSData *data, __unused NSURLResponse *response, NSError *sessionError) {
-    if (sessionError) {
-      RCTLogWarn(@"JS CPU Profile data failed to send. Is the packager server running locally?\nDetails: %@", error);
-    } else {
-      RCTLogInfo(@"JS CPU Profile data sent successfully.");
-    }
-  }];
-
-  [sessionDataTask resume];
-}
-
-- (void)operationCompletedWithResults:(NSString *)results
-{
-  // Send the results to the packager, using the module's queue.
-  dispatch_async(self.methodQueue, ^{
-    [self operationComplete:0 result:results error:nil];
-  });
-}
-
-#endif
-
-@end
diff --git a/React/Modules/RCTKeyboardObserver.h b/React/Modules/RCTKeyboardObserver.h
index 891e174225e20f..1ea35d530c31f4 100644
--- a/React/Modules/RCTKeyboardObserver.h
+++ b/React/Modules/RCTKeyboardObserver.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTKeyboardObserver.m b/React/Modules/RCTKeyboardObserver.m
index dd45092e1b2833..6b46b27da4e20a 100644
--- a/React/Modules/RCTKeyboardObserver.m
+++ b/React/Modules/RCTKeyboardObserver.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTLayoutAnimation.h b/React/Modules/RCTLayoutAnimation.h
index d56d5912302118..0f1104572bdb7b 100644
--- a/React/Modules/RCTLayoutAnimation.h
+++ b/React/Modules/RCTLayoutAnimation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTLayoutAnimation.m b/React/Modules/RCTLayoutAnimation.m
index cefcd1de9c9fdf..502824693f598e 100644
--- a/React/Modules/RCTLayoutAnimation.m
+++ b/React/Modules/RCTLayoutAnimation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTLayoutAnimationGroup.h b/React/Modules/RCTLayoutAnimationGroup.h
index 3dba4e0f00e747..93a238ccb717b8 100644
--- a/React/Modules/RCTLayoutAnimationGroup.h
+++ b/React/Modules/RCTLayoutAnimationGroup.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTLayoutAnimationGroup.m b/React/Modules/RCTLayoutAnimationGroup.m
index 73db8b68c6b133..ac72ccf72e599b 100644
--- a/React/Modules/RCTLayoutAnimationGroup.m
+++ b/React/Modules/RCTLayoutAnimationGroup.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTRedBox.h b/React/Modules/RCTRedBox.h
index 973acd780cfbb5..ffd560c85a2705 100644
--- a/React/Modules/RCTRedBox.h
+++ b/React/Modules/RCTRedBox.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTRedBox.m b/React/Modules/RCTRedBox.m
index 44105db5fb21d1..9714c1d7e68f7d 100644
--- a/React/Modules/RCTRedBox.m
+++ b/React/Modules/RCTRedBox.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -48,7 +48,7 @@ - (instancetype)initWithFrame:(CGRect)frame
 #else
         self.windowLevel = UIWindowLevelStatusBar - 1;
 #endif
-        self.backgroundColor = [UIColor colorWithRed:0.8 green:0 blue:0 alpha:1];
+        self.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         self.hidden = YES;
 
         UIViewController *rootController = [UIViewController new];
@@ -59,7 +59,7 @@ - (instancetype)initWithFrame:(CGRect)frame
         const CGFloat buttonHeight = 60;
 
         CGRect detailsFrame = rootView.bounds;
-        detailsFrame.size.height -= buttonHeight;
+        detailsFrame.size.height -= buttonHeight + [self bottomSafeViewHeight];
 
         _stackTraceTableView = [[UITableView alloc] initWithFrame:detailsFrame style:UITableViewStylePlain];
         _stackTraceTableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
@@ -74,10 +74,10 @@ - (instancetype)initWithFrame:(CGRect)frame
         [rootView addSubview:_stackTraceTableView];
 
 #if TARGET_OS_SIMULATOR
-        NSString *reloadText = @"Reload JS (\u2318R)";
-        NSString *dismissText = @"Dismiss (ESC)";
-        NSString *copyText = @"Copy (\u2325\u2318C)";
-        NSString *extraText = @"Extra Info (\u2318E)";
+        NSString *reloadText = @"Reload\n(\u2318R)";
+        NSString *dismissText = @"Dismiss\n(ESC)";
+        NSString *copyText = @"Copy\n(\u2325\u2318C)";
+        NSString *extraText = @"Extra Info\n(\u2318E)";
 #else
         NSString *reloadText = @"Reload JS";
         NSString *dismissText = @"Dismiss";
@@ -89,53 +89,85 @@ - (instancetype)initWithFrame:(CGRect)frame
         dismissButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin;
         dismissButton.accessibilityIdentifier = @"redbox-dismiss";
         dismissButton.titleLabel.font = [UIFont systemFontOfSize:13];
+        dismissButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
+        dismissButton.titleLabel.textAlignment = NSTextAlignmentCenter;
+        dismissButton.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         [dismissButton setTitle:dismissText forState:UIControlStateNormal];
-        [dismissButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
-        [dismissButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
+        [dismissButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
+        [dismissButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateHighlighted];
         [dismissButton addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside];
 
         UIButton *reloadButton = [UIButton buttonWithType:UIButtonTypeCustom];
         reloadButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin;
         reloadButton.accessibilityIdentifier = @"redbox-reload";
         reloadButton.titleLabel.font = [UIFont systemFontOfSize:13];
-
+        reloadButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
+        reloadButton.titleLabel.textAlignment = NSTextAlignmentCenter;
+        reloadButton.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         [reloadButton setTitle:reloadText forState:UIControlStateNormal];
-        [reloadButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
-        [reloadButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
+        [reloadButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
+        [reloadButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateHighlighted];
         [reloadButton addTarget:self action:@selector(reload) forControlEvents:UIControlEventTouchUpInside];
 
         UIButton *copyButton = [UIButton buttonWithType:UIButtonTypeCustom];
         copyButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin;
         copyButton.accessibilityIdentifier = @"redbox-copy";
         copyButton.titleLabel.font = [UIFont systemFontOfSize:13];
+        copyButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
+        copyButton.titleLabel.textAlignment = NSTextAlignmentCenter;
+        copyButton.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         [copyButton setTitle:copyText forState:UIControlStateNormal];
-        [copyButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
-        [copyButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
+        [copyButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
+        [copyButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateHighlighted];
         [copyButton addTarget:self action:@selector(copyStack) forControlEvents:UIControlEventTouchUpInside];
 
         UIButton *extraButton = [UIButton buttonWithType:UIButtonTypeCustom];
         extraButton.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin;
         extraButton.accessibilityIdentifier = @"redbox-extra";
         extraButton.titleLabel.font = [UIFont systemFontOfSize:13];
+        extraButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
+        extraButton.titleLabel.textAlignment = NSTextAlignmentCenter;
+        extraButton.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
         [extraButton setTitle:extraText forState:UIControlStateNormal];
-        [extraButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
-        [extraButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
+        [extraButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
+        [extraButton setTitleColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateHighlighted];
         [extraButton addTarget:self action:@selector(showExtraDataViewController) forControlEvents:UIControlEventTouchUpInside];
 
         CGFloat buttonWidth = self.bounds.size.width / 4;
-        dismissButton.frame = CGRectMake(0, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
-        reloadButton.frame = CGRectMake(buttonWidth, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
-        copyButton.frame = CGRectMake(buttonWidth * 2, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
-        extraButton.frame = CGRectMake(buttonWidth * 3, self.bounds.size.height - buttonHeight, buttonWidth, buttonHeight);
+        CGFloat bottomButtonHeight = self.bounds.size.height - buttonHeight - [self bottomSafeViewHeight];
+    
+        dismissButton.frame = CGRectMake(0, bottomButtonHeight, buttonWidth, buttonHeight);
+        reloadButton.frame = CGRectMake(buttonWidth, bottomButtonHeight, buttonWidth, buttonHeight);
+        copyButton.frame = CGRectMake(buttonWidth * 2, bottomButtonHeight, buttonWidth, buttonHeight);
+        extraButton.frame = CGRectMake(buttonWidth * 3, bottomButtonHeight, buttonWidth, buttonHeight);
+
+        UIView *topBorder = [[UIView alloc] initWithFrame:CGRectMake(0, bottomButtonHeight + 1, rootView.frame.size.width, 1)];
+        topBorder.backgroundColor = [UIColor colorWithRed:0.70 green:0.70 blue:0.70 alpha:1.0];
 
         [rootView addSubview:dismissButton];
         [rootView addSubview:reloadButton];
         [rootView addSubview:copyButton];
         [rootView addSubview:extraButton];
+        [rootView addSubview:topBorder];
+        
+        UIView *bottomSafeView = [UIView new];
+        bottomSafeView.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];
+        bottomSafeView.frame = CGRectMake(0, self.bounds.size.height - [self bottomSafeViewHeight], self.bounds.size.width, [self bottomSafeViewHeight]);
+        
+        [rootView addSubview:bottomSafeView];
     }
     return self;
 }
 
+- (NSInteger)bottomSafeViewHeight
+{
+    if (@available(iOS 11.0, *)) {
+        return [UIApplication sharedApplication].delegate.window.safeAreaInsets.bottom;
+    } else {
+        return 0;
+    }
+}
+
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
 
 - (void)dealloc
@@ -248,14 +280,14 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
 - (UITableViewCell *)reuseCell:(UITableViewCell *)cell forErrorMessage:(NSString *)message
 {
     if (!cell) {
-        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"msg-cell"];
+        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"msg-cell"];
         cell.textLabel.accessibilityIdentifier = @"redbox-error";
         cell.textLabel.textColor = [UIColor whiteColor];
         cell.textLabel.font = [UIFont boldSystemFontOfSize:16];
         cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
         cell.textLabel.numberOfLines = 0;
         cell.detailTextLabel.textColor = [UIColor whiteColor];
-        cell.backgroundColor = [UIColor clearColor];
+        cell.backgroundColor = [UIColor colorWithRed:0.82 green:0.10 blue:0.15 alpha:1.0];
         cell.selectionStyle = UITableViewCellSelectionStyleNone;
     }
 
@@ -268,11 +300,11 @@ - (UITableViewCell *)reuseCell:(UITableViewCell *)cell forStackFrame:(RCTJSStack
 {
     if (!cell) {
         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"cell"];
-        cell.textLabel.textColor = [UIColor colorWithWhite:1 alpha:0.9];
+        cell.textLabel.textColor = [UIColor whiteColor];
         cell.textLabel.font = [UIFont fontWithName:@"Menlo-Regular" size:14];
         cell.textLabel.lineBreakMode = NSLineBreakByCharWrapping;
         cell.textLabel.numberOfLines = 2;
-        cell.detailTextLabel.textColor = [UIColor colorWithWhite:1 alpha:0.7];
+        cell.detailTextLabel.textColor = [UIColor colorWithRed:0.70 green:0.70 blue:0.70 alpha:1.0];
         cell.detailTextLabel.font = [UIFont fontWithName:@"Menlo-Regular" size:11];
         cell.detailTextLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
         cell.backgroundColor = [UIColor clearColor];
diff --git a/React/Modules/RCTRedBoxExtraDataViewController.h b/React/Modules/RCTRedBoxExtraDataViewController.h
index 8a014b8c3b797a..ee663e23abca30 100644
--- a/React/Modules/RCTRedBoxExtraDataViewController.h
+++ b/React/Modules/RCTRedBoxExtraDataViewController.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTRedBoxExtraDataViewController.m b/React/Modules/RCTRedBoxExtraDataViewController.m
index f4ca54e40813c1..c9e1274ae08b9c 100644
--- a/React/Modules/RCTRedBoxExtraDataViewController.m
+++ b/React/Modules/RCTRedBoxExtraDataViewController.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTSourceCode.h b/React/Modules/RCTSourceCode.h
index f0f60cc0d951ad..6ed602cb1ff57b 100644
--- a/React/Modules/RCTSourceCode.h
+++ b/React/Modules/RCTSourceCode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTSourceCode.m b/React/Modules/RCTSourceCode.m
index 1886476bd7552d..375930b7d463a8 100644
--- a/React/Modules/RCTSourceCode.m
+++ b/React/Modules/RCTSourceCode.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTStatusBarManager.h b/React/Modules/RCTStatusBarManager.h
index 237d3518f0259a..74893bc68f4932 100644
--- a/React/Modules/RCTStatusBarManager.h
+++ b/React/Modules/RCTStatusBarManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTStatusBarManager.m b/React/Modules/RCTStatusBarManager.m
index 18bd5b0a66cd0b..5136b36907ccdd 100644
--- a/React/Modules/RCTStatusBarManager.m
+++ b/React/Modules/RCTStatusBarManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTTVNavigationEventEmitter.h b/React/Modules/RCTTVNavigationEventEmitter.h
index 05b19f1b6f7844..78dfcae1e44c23 100644
--- a/React/Modules/RCTTVNavigationEventEmitter.h
+++ b/React/Modules/RCTTVNavigationEventEmitter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTTVNavigationEventEmitter.m b/React/Modules/RCTTVNavigationEventEmitter.m
index 3ebe46381d1899..cd92d18789aebe 100644
--- a/React/Modules/RCTTVNavigationEventEmitter.m
+++ b/React/Modules/RCTTVNavigationEventEmitter.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTTiming.h b/React/Modules/RCTTiming.h
index b126dca18d5e5b..5130b6339bb1c8 100644
--- a/React/Modules/RCTTiming.h
+++ b/React/Modules/RCTTiming.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTTiming.m b/React/Modules/RCTTiming.m
index 78ff1aa7050b25..06f74aa00e38d9 100644
--- a/React/Modules/RCTTiming.m
+++ b/React/Modules/RCTTiming.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTUIManager.h b/React/Modules/RCTUIManager.h
index 125ecc3b17e656..eedc25f89680d5 100644
--- a/React/Modules/RCTUIManager.h
+++ b/React/Modules/RCTUIManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index 454c7cbcb151a9..e9d7877801216f 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -76,7 +76,7 @@ @implementation RCTUIManager
   NSHashTable<RCTShadowView *> *_shadowViewsWithUpdatedChildren; // UIManager queue only.
 
   // Keyed by viewName
-  NSDictionary *_componentDataByName;
+  NSMutableDictionary *_componentDataByName;
 }
 
 @synthesize bridge = _bridge;
@@ -158,18 +158,16 @@ - (void)setBridge:(RCTBridge *)bridge
 
   _observerCoordinator = [RCTUIManagerObserverCoordinator new];
 
-  // Get view managers from bridge
-  NSMutableDictionary *componentDataByName = [NSMutableDictionary new];
+  // Get view managers from bridge=
+  _componentDataByName = [NSMutableDictionary new];
   for (Class moduleClass in _bridge.moduleClasses) {
     if ([moduleClass isSubclassOfClass:[RCTViewManager class]]) {
       RCTComponentData *componentData = [[RCTComponentData alloc] initWithManagerClass:moduleClass
                                                                                 bridge:_bridge];
-      componentDataByName[componentData.name] = componentData;
+      _componentDataByName[componentData.name] = componentData;
     }
   }
 
-  _componentDataByName = [componentDataByName copy];
-
 #if !TARGET_OS_OSX // TODO(macOS ISS#2323203)
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(didReceiveNewContentSizeMultiplier)
@@ -510,6 +508,7 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
     UIUserInterfaceLayoutDirection layoutDirection;
     BOOL isNew;
     BOOL parentIsNew;
+    RCTDisplayType displayType;
   } RCTFrameData;
 
   // Construct arrays then hand off to main thread
@@ -527,6 +526,7 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
         layoutMetrics.layoutDirection,
         shadowView.isNewView,
         shadowView.superview.isNewView,
+        layoutMetrics.displayType
       };
     }
   }
@@ -588,6 +588,7 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
       RCTLayoutAnimation *updatingLayoutAnimation = isNew ? nil : layoutAnimationGroup.updatingLayoutAnimation;
       BOOL shouldAnimateCreation = isNew && !frameData.parentIsNew;
       RCTLayoutAnimation *creatingLayoutAnimation = shouldAnimateCreation ? layoutAnimationGroup.creatingLayoutAnimation : nil;
+      BOOL isHidden = frameData.displayType == RCTDisplayTypeNone;
 
       void (^completion)(BOOL) = ^(BOOL finished) {
         completionsCalled++;
@@ -603,6 +604,10 @@ - (RCTViewManagerUIBlock)uiBlockWithLayoutUpdateForRootView:(RCTRootShadowView *
       if (view.reactLayoutDirection != layoutDirection) {
         view.reactLayoutDirection = layoutDirection;
       }
+      
+      if (view.isHidden != isHidden) {
+        view.hidden = isHidden;
+      }
 
       if (creatingLayoutAnimation) {
 
@@ -1383,59 +1388,6 @@ static void RCTMeasureLayout(RCTShadowView *view,
   RCTMeasureLayout(shadowView, shadowView.reactSuperview, callback);
 }
 
-/**
- * Returns an array of computed offset layouts in a dictionary form. The layouts are of any React subviews
- * that are immediate descendants to the parent view found within a specified rect. The dictionary result
- * contains left, top, width, height and an index. The index specifies the position among the other subviews.
- * Only layouts for views that are within the rect passed in are returned. Invokes the error callback if the
- * passed in parent view does not exist. Invokes the supplied callback with the array of computed layouts.
- */
-RCT_EXPORT_METHOD(measureViewsInRect:(CGRect)rect
-                  parentView:(nonnull NSNumber *)reactTag
-                  errorCallback:(__unused RCTResponseSenderBlock)errorCallback
-                  callback:(RCTResponseSenderBlock)callback)
-{
-  RCTShadowView *shadowView = _shadowViewRegistry[reactTag];
-  if (!shadowView) {
-    RCTLogError(@"Attempting to measure view that does not exist (tag #%@)", reactTag);
-    return;
-  }
-  NSArray<RCTShadowView *> *childShadowViews = [shadowView reactSubviews];
-  NSMutableArray<NSDictionary *> *results =
-    [[NSMutableArray alloc] initWithCapacity:childShadowViews.count];
-
-  [childShadowViews enumerateObjectsUsingBlock:
-   ^(RCTShadowView *childShadowView, NSUInteger idx, __unused BOOL *stop) {
-    CGRect childLayout = [childShadowView measureLayoutRelativeToAncestor:shadowView];
-    if (CGRectIsNull(childLayout)) {
-      RCTLogError(@"View %@ (tag #%@) is not a descendant of %@ (tag #%@)",
-                  childShadowView, childShadowView.reactTag, shadowView, shadowView.reactTag);
-      return;
-    }
-
-    CGFloat leftOffset = childLayout.origin.x;
-    CGFloat topOffset = childLayout.origin.y;
-    CGFloat width = childLayout.size.width;
-    CGFloat height = childLayout.size.height;
-
-    if (leftOffset <= rect.origin.x + rect.size.width &&
-        leftOffset + width >= rect.origin.x &&
-        topOffset <= rect.origin.y + rect.size.height &&
-        topOffset + height >= rect.origin.y) {
-
-      // This view is within the layout rect
-      NSDictionary *result = @{@"index": @(idx),
-                               @"left": @(leftOffset),
-                               @"top": @(topOffset),
-                               @"width": @(width),
-                               @"height": @(height)};
-
-      [results addObject:result];
-    }
-  }];
-  callback(@[results]);
-}
-
 RCT_EXPORT_METHOD(takeSnapshot:(id /* NSString or NSNumber */)target
                   withOptions:(NSDictionary *)options
                   resolve:(RCTPromiseResolveBlock)resolve
@@ -1529,6 +1481,62 @@ static void RCTMeasureLayout(RCTShadowView *view,
   }];
 }
 
+static NSMutableDictionary<NSString *, id> *moduleConstantsForComponent(
+    NSMutableDictionary<NSString *, NSDictionary *> *directEvents,
+    NSMutableDictionary<NSString *, NSDictionary *> *bubblingEvents,
+    RCTComponentData *componentData) {
+  NSMutableDictionary<NSString *, id> *moduleConstants = [NSMutableDictionary new];
+
+  // Register which event-types this view dispatches.
+  // React needs this for the event plugin.
+  NSMutableDictionary<NSString *, NSDictionary *> *bubblingEventTypes = [NSMutableDictionary new];
+  NSMutableDictionary<NSString *, NSDictionary *> *directEventTypes = [NSMutableDictionary new];
+
+  // Add manager class
+  moduleConstants[@"Manager"] = RCTBridgeModuleNameForClass(componentData.managerClass);
+
+  // Add native props
+  NSDictionary<NSString *, id> *viewConfig = [componentData viewConfig];
+  moduleConstants[@"NativeProps"] = viewConfig[@"propTypes"];
+  moduleConstants[@"baseModuleName"] = viewConfig[@"baseModuleName"];
+  moduleConstants[@"bubblingEventTypes"] = bubblingEventTypes;
+  moduleConstants[@"directEventTypes"] = directEventTypes;
+
+  // Add direct events
+  for (NSString *eventName in viewConfig[@"directEvents"]) {
+    if (!directEvents[eventName]) {
+      directEvents[eventName] = @{
+                                  @"registrationName": [eventName stringByReplacingCharactersInRange:(NSRange){0, 3} withString:@"on"],
+                                  };
+    }
+    directEventTypes[eventName] = directEvents[eventName];
+    if (RCT_DEBUG && bubblingEvents[eventName]) {
+      RCTLogError(@"Component '%@' re-registered bubbling event '%@' as a "
+                  "direct event", componentData.name, eventName);
+    }
+  }
+
+  // Add bubbling events
+  for (NSString *eventName in viewConfig[@"bubblingEvents"]) {
+    if (!bubblingEvents[eventName]) {
+      NSString *bubbleName = [eventName stringByReplacingCharactersInRange:(NSRange){0, 3} withString:@"on"];
+      bubblingEvents[eventName] = @{
+                                    @"phasedRegistrationNames": @{
+                                        @"bubbled": bubbleName,
+                                        @"captured": [bubbleName stringByAppendingString:@"Capture"],
+                                        }
+                                    };
+    }
+    bubblingEventTypes[eventName] = bubblingEvents[eventName];
+    if (RCT_DEBUG && directEvents[eventName]) {
+      RCTLogError(@"Component '%@' re-registered direct event '%@' as a "
+                  "bubbling event", componentData.name, eventName);
+    }
+  }
+
+  return moduleConstants;
+}
+
 - (NSDictionary<NSString *, id> *)constantsToExport
 {
   NSMutableDictionary<NSString *, NSDictionary *> *constants = [NSMutableDictionary new];
@@ -1536,62 +1544,59 @@ static void RCTMeasureLayout(RCTShadowView *view,
   NSMutableDictionary<NSString *, NSDictionary *> *bubblingEvents = [NSMutableDictionary new];
 
   [_componentDataByName enumerateKeysAndObjectsUsingBlock:^(NSString *name, RCTComponentData *componentData, __unused BOOL *stop) {
-     NSMutableDictionary<NSString *, id> *moduleConstants = [NSMutableDictionary new];
-
-     // Register which event-types this view dispatches.
-     // React needs this for the event plugin.
-     NSMutableDictionary<NSString *, NSDictionary *> *bubblingEventTypes = [NSMutableDictionary new];
-     NSMutableDictionary<NSString *, NSDictionary *> *directEventTypes = [NSMutableDictionary new];
-
-     // Add manager class
-     moduleConstants[@"Manager"] = RCTBridgeModuleNameForClass(componentData.managerClass);
-
-     // Add native props
-     NSDictionary<NSString *, id> *viewConfig = [componentData viewConfig];
-     moduleConstants[@"NativeProps"] = viewConfig[@"propTypes"];
-     moduleConstants[@"baseModuleName"] = viewConfig[@"baseModuleName"];
-     moduleConstants[@"bubblingEventTypes"] = bubblingEventTypes;
-     moduleConstants[@"directEventTypes"] = directEventTypes;
-
-     // Add direct events
-     for (NSString *eventName in viewConfig[@"directEvents"]) {
-       if (!directEvents[eventName]) {
-         directEvents[eventName] = @{
-           @"registrationName": [eventName stringByReplacingCharactersInRange:(NSRange){0, 3} withString:@"on"],
-         };
-       }
-       directEventTypes[eventName] = directEvents[eventName];
-       if (RCT_DEBUG && bubblingEvents[eventName]) {
-         RCTLogError(@"Component '%@' re-registered bubbling event '%@' as a "
-                     "direct event", componentData.name, eventName);
-       }
-     }
-
-     // Add bubbling events
-     for (NSString *eventName in viewConfig[@"bubblingEvents"]) {
-       if (!bubblingEvents[eventName]) {
-         NSString *bubbleName = [eventName stringByReplacingCharactersInRange:(NSRange){0, 3} withString:@"on"];
-         bubblingEvents[eventName] = @{
-           @"phasedRegistrationNames": @{
-             @"bubbled": bubbleName,
-             @"captured": [bubbleName stringByAppendingString:@"Capture"],
-           }
-         };
-       }
-       bubblingEventTypes[eventName] = bubblingEvents[eventName];
-       if (RCT_DEBUG && directEvents[eventName]) {
-         RCTLogError(@"Component '%@' re-registered direct event '%@' as a "
-                     "bubbling event", componentData.name, eventName);
-       }
-     }
-
-     RCTAssert(!constants[name], @"UIManager already has constants for %@", componentData.name);
-     constants[name] = moduleConstants;
+    RCTAssert(!constants[name], @"UIManager already has constants for %@", componentData.name);
+    NSMutableDictionary<NSString *, id> *moduleConstants = moduleConstantsForComponent(directEvents, bubblingEvents, componentData);
+    constants[name] = moduleConstants;
   }];
 
   return constants;
 }
 
+RCT_EXPORT_BLOCKING_SYNCHRONOUS_METHOD(lazilyLoadView:(NSString *)name)
+{
+  if (_componentDataByName[name]) {
+    return @{};
+  }
+
+  id<RCTBridgeDelegate> delegate = self.bridge.delegate;
+  if (![delegate respondsToSelector:@selector(bridge:didNotFindModule:)]) {
+    return @{};
+  }
+
+  NSString *moduleName = name;
+  BOOL result = [delegate bridge:self.bridge didNotFindModule:moduleName];
+  if (!result) {
+    moduleName = [name stringByAppendingString:@"Manager"];
+    result = [delegate bridge:self.bridge didNotFindModule:moduleName];
+  }
+  if (!result) {
+    return @{};
+  }
+
+  id module = [self.bridge moduleForName:moduleName];
+  if (module == nil) {
+    // There is all sorts of code in this codebase that drops prefixes.
+    //
+    // If we didn't find a module, it's possible because it's stored under a key
+    // which had RCT Prefixes stripped. Lets check one more time...
+    module = [self.bridge moduleForName:RCTDropReactPrefixes(moduleName)];
+  }
+  
+  if (!module) {
+    return @{};
+  }
+
+  RCTComponentData *componentData = [[RCTComponentData alloc] initWithManagerClass:[module class] bridge:self.bridge];
+  _componentDataByName[componentData.name] = componentData;
+  NSMutableDictionary *directEvents = [NSMutableDictionary new];
+  NSMutableDictionary *bubblingEvents = [NSMutableDictionary new];
+  NSMutableDictionary<NSString *, id> *moduleConstants = moduleConstantsForComponent(directEvents, bubblingEvents, componentData);
+  return
+  @{
+    @"viewConfig": moduleConstants,
+    };
+}
+
 RCT_EXPORT_METHOD(configureNextLayoutAnimation:(NSDictionary *)config
                   withCallback:(RCTResponseSenderBlock)callback
                   errorCallback:(__unused RCTResponseSenderBlock)errorCallback)
diff --git a/React/Modules/RCTUIManagerObserverCoordinator.h b/React/Modules/RCTUIManagerObserverCoordinator.h
index 3befc839790b05..c32d9776bd80d8 100644
--- a/React/Modules/RCTUIManagerObserverCoordinator.h
+++ b/React/Modules/RCTUIManagerObserverCoordinator.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTUIManagerObserverCoordinator.mm b/React/Modules/RCTUIManagerObserverCoordinator.mm
index a8fa5f6db3b048..1a08cd697568e4 100644
--- a/React/Modules/RCTUIManagerObserverCoordinator.mm
+++ b/React/Modules/RCTUIManagerObserverCoordinator.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTUIManagerUtils.h b/React/Modules/RCTUIManagerUtils.h
index 29bb70aaa9e3a5..5627a8bd136a5b 100644
--- a/React/Modules/RCTUIManagerUtils.h
+++ b/React/Modules/RCTUIManagerUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Modules/RCTUIManagerUtils.m b/React/Modules/RCTUIManagerUtils.m
index a62445650c4625..48e71eb8e0435f 100644
--- a/React/Modules/RCTUIManagerUtils.m
+++ b/React/Modules/RCTUIManagerUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTFPSGraph.h b/React/Profiler/RCTFPSGraph.h
index a71ac9ab33f400..b3092aba828d31 100644
--- a/React/Profiler/RCTFPSGraph.h
+++ b/React/Profiler/RCTFPSGraph.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTFPSGraph.m b/React/Profiler/RCTFPSGraph.m
index 6b22ef349f4c61..634671338b47a6 100644
--- a/React/Profiler/RCTFPSGraph.m
+++ b/React/Profiler/RCTFPSGraph.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTMacros.h b/React/Profiler/RCTMacros.h
index ea4c5f40e8c521..1eb534314f5e51 100644
--- a/React/Profiler/RCTMacros.h
+++ b/React/Profiler/RCTMacros.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTPerfMonitor.m b/React/Profiler/RCTPerfMonitor.m
index b9c2c4cd585152..57bd0f9adf42f7 100644
--- a/React/Profiler/RCTPerfMonitor.m
+++ b/React/Profiler/RCTPerfMonitor.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfile.h b/React/Profiler/RCTProfile.h
index 88ff3d41f32ff4..1b07e979bfeb1b 100644
--- a/React/Profiler/RCTProfile.h
+++ b/React/Profiler/RCTProfile.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfile.m b/React/Profiler/RCTProfile.m
index e0478aed1f01ba..60934c1a45ad74 100644
--- a/React/Profiler/RCTProfile.m
+++ b/React/Profiler/RCTProfile.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfileTrampoline-arm.S b/React/Profiler/RCTProfileTrampoline-arm.S
index d4061fed883199..47934922303115 100644
--- a/React/Profiler/RCTProfileTrampoline-arm.S
+++ b/React/Profiler/RCTProfileTrampoline-arm.S
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfileTrampoline-arm64.S b/React/Profiler/RCTProfileTrampoline-arm64.S
index af4733b5bf6331..8aa24ffd107849 100644
--- a/React/Profiler/RCTProfileTrampoline-arm64.S
+++ b/React/Profiler/RCTProfileTrampoline-arm64.S
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfileTrampoline-i386.S b/React/Profiler/RCTProfileTrampoline-i386.S
index a33e8a21f2c752..d213c46321aca2 100644
--- a/React/Profiler/RCTProfileTrampoline-i386.S
+++ b/React/Profiler/RCTProfileTrampoline-i386.S
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Profiler/RCTProfileTrampoline-x86_64.S b/React/Profiler/RCTProfileTrampoline-x86_64.S
index d687214193adce..a40795c81b7df9 100644
--- a/React/Profiler/RCTProfileTrampoline-x86_64.S
+++ b/React/Profiler/RCTProfileTrampoline-x86_64.S
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/React.xcodeproj/project.pbxproj b/React/React.xcodeproj/project.pbxproj
index eb755277bcf636..cb3b5011eff78d 100644
--- a/React/React.xcodeproj/project.pbxproj
+++ b/React/React.xcodeproj/project.pbxproj
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@@ -94,7 +84,6 @@
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@@ -107,10 +96,6 @@
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@@ -130,55 +115,24 @@
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 			remoteInfo = "yoga-macOS";
 		};
-		9936F33F1F5F305D0010BF04 /* PBXContainerItemProxy */ = {
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 			proxyType = 1;
-			remoteGlobalIDString = 9936F2F81F5F2E4B0010BF04;
-			remoteInfo = privatedata;
+			remoteGlobalIDString = 3D383D3D1EBD27B9005632C8;
+			remoteInfo = "double-conversion-tvOS";
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-		9936F3411F5F30640010BF04 /* PBXContainerItemProxy */ = {
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 			proxyType = 1;
-			remoteGlobalIDString = 9936F3141F5F2E5B0010BF04;
-			remoteInfo = "privatedata-tvOS";
+			remoteGlobalIDString = EDEBC6BA214B3E7000DD5AC8;
+			remoteInfo = jsi;
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 			proxyType = 1;
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-			remoteInfo = privatedata;
+			remoteGlobalIDString = EBF21BDD1FC4989A0052F4D5;
+			remoteInfo = "jsinspector-tvOS";
 		};
-		9936F3451F5F30830010BF04 /* PBXContainerItemProxy */ = {
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 			proxyType = 1;
-			remoteGlobalIDString = 9936F3141F5F2E5B0010BF04;
-			remoteInfo = "privatedata-tvOS";
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+			remoteInfo = "third-party-tvOS";
 		};
-		EBF21C011FC499D10052F4D5 /* PBXContainerItemProxy */ = {
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 			proxyType = 1;
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-			remoteInfo = jsinspector;
+			remoteGlobalIDString = 3D3CD9261DE5FBEE00167DC4;
+			remoteInfo = "cxxreact-tvOS";
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-		EBF21C031FC499D80052F4D5 /* PBXContainerItemProxy */ = {
+		ED296FFD214C9EC600B7C4FE /* PBXContainerItemProxy */ = {
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 			proxyType = 1;
-			remoteGlobalIDString = EBF21BDD1FC4989A0052F4D5;
-			remoteInfo = "jsinspector-tvOS";
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+		ED29704D215012C700B7C4FE /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
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+		ED2970652150237300B7C4FE /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
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+			remoteInfo = "jsiexecutor-tvOS";
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+		EDEBC74A214B46A700DD5AC8 /* PBXContainerItemProxy */ = {
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+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = EDEBC724214B45A300DD5AC8;
+			remoteInfo = jsiexecutor;
+		};
+		EDEBC74E214B477400DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
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+			proxyType = 1;
+			remoteGlobalIDString = EDEBC6BA214B3E7000DD5AC8;
+			remoteInfo = jsi;
+		};
+		EDEBC7CB214C516800DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 139D7E871E25C6D100323FB7;
+			remoteInfo = "double-conversion";
+		};
+		EDEBC7CD214C523F00DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 3D3CD9191DE5FBEC00167DC4;
+			remoteInfo = cxxreact;
+		};
+		EDEBC7D2214C528C00DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 139D7ECD1E25DB7D00323FB7;
+			remoteInfo = "third-party";
+		};
+		EDEBC7D6214C52FD00DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 139D7E871E25C6D100323FB7;
+			remoteInfo = "double-conversion";
+		};
+		EDEBC7D8214C628300DD5AC8 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 83CBB9F71A601CBA00E9B192 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = EBF21BBF1FC498900052F4D5;
+			remoteInfo = jsinspector;
 		};
 /* End PBXContainerItemProxy section */
 
@@ -2037,13 +2019,13 @@
 				18632C1F1EF49C9D0010A3BB /* JsArgumentHelpers.h in Copy Headers */,
 				18632C201EF49C9D0010A3BB /* JSBigString.h in Copy Headers */,
 				18632C211EF49C9D0010A3BB /* JSBundleType.h in Copy Headers */,
-				18632C221EF49C9D0010A3BB /* JSCExecutor.h in Copy Headers */,
-				18632C241EF49C9D0010A3BB /* JSCLegacyTracing.h in Copy Headers */,
-				18632C251EF49C9D0010A3BB /* JSCMemory.h in Copy Headers */,
-				18632C261EF49C9D0010A3BB /* JSCNativeModules.h in Copy Headers */,
-				18632C271EF49C9D0010A3BB /* JSCPerfStats.h in Copy Headers */,
-				18632C281EF49C9D0010A3BB /* JSCSamplingProfiler.h in Copy Headers */,
-				18632C291EF49C9D0010A3BB /* JSCUtils.h in Copy Headers */,
+				18632C221EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C241EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C251EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C261EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C271EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C281EF49C9D0010A3BB /* (null) in Copy Headers */,
+				18632C291EF49C9D0010A3BB /* (null) in Copy Headers */,
 				18632C2A1EF49C9D0010A3BB /* JSIndexedRAMBundle.h in Copy Headers */,
 				18632C2B1EF49C9D0010A3BB /* JSModulesUnbundle.h in Copy Headers */,
 				18632C2C1EF49C9D0010A3BB /* MessageQueueThread.h in Copy Headers */,
@@ -2051,7 +2033,7 @@
 				18632C2E1EF49C9D0010A3BB /* ModuleRegistry.h in Copy Headers */,
 				18632C2F1EF49C9D0010A3BB /* NativeModule.h in Copy Headers */,
 				18632C301EF49C9D0010A3BB /* NativeToJsBridge.h in Copy Headers */,
-				18632C321EF49C9D0010A3BB /* Platform.h in Copy Headers */,
+				18632C321EF49C9D0010A3BB /* (null) in Copy Headers */,
 				18632C331EF49C9D0010A3BB /* RecoverableError.h in Copy Headers */,
 				18632C341EF49C9D0010A3BB /* SampleCxxModule.h in Copy Headers */,
 				18632C351EF49C9D0010A3BB /* SystraceSection.h in Copy Headers */,
@@ -2067,14 +2049,13 @@
 			files = (
 				18C2C66E2141C8DD004314E0 /* JSException.h in Copy Headers */,
 				F204818F2093178D00942480 /* (null) in Copy Headers */,
-				F204818E2093177C00942480 /* JSCJSException.h in Copy Headers */,
 				18632BF71EF494C70010A3BB /* (null) in Copy Headers */,
-				18632BF81EF494C70010A3BB /* JavaScriptCore.h in Copy Headers */,
-				18632BF91EF494C70010A3BB /* JSCHelpers.h in Copy Headers */,
-				18632BFA1EF494C70010A3BB /* JSCWrapper.h in Copy Headers */,
-				18632BFB1EF494C70010A3BB /* noncopyable.h in Copy Headers */,
-				18632BFC1EF494C70010A3BB /* Unicode.h in Copy Headers */,
-				18632BFD1EF494C70010A3BB /* Value.h in Copy Headers */,
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+		EDEBC6D9214B3F6800DD5AC8 /* jsi-inl.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "jsi-inl.h"; sourceTree = "<group>"; };
+		EDEBC6DA214B3F6800DD5AC8 /* JSIDynamic.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSIDynamic.cpp; sourceTree = "<group>"; };
+		EDEBC6DB214B3F6800DD5AC8 /* jsi.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = jsi.cpp; sourceTree = "<group>"; };
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+		EDEBC6DE214B3F6800DD5AC8 /* JSCRuntime.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSCRuntime.h; sourceTree = "<group>"; };
+		EDEBC6DF214B3F6800DD5AC8 /* BUCK */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = BUCK; sourceTree = "<group>"; };
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+		EDEBC73B214B45A300DD5AC8 /* libjsiexecutor.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libjsiexecutor.a; sourceTree = BUILT_PRODUCTS_DIR; };
+		EDEBC740214B463000DD5AC8 /* BUCK */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = BUCK; sourceTree = "<group>"; };
+		EDEBC750214B47E100DD5AC8 /* JSDeltaBundleClient.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSDeltaBundleClient.cpp; sourceTree = "<group>"; };
+		EDEBC751214B47E100DD5AC8 /* JSDeltaBundleClient.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSDeltaBundleClient.h; sourceTree = "<group>"; };
+		EDEBC752214B47E100DD5AC8 /* SharedProxyCxxModule.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SharedProxyCxxModule.h; sourceTree = "<group>"; };
+		EDEBC757214C284000DD5AC8 /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = System/Library/Frameworks/JavaScriptCore.framework; sourceTree = SDKROOT; };
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-		F204815E2092CDA400942480 /* JSCJSException.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSCJSException.h; sourceTree = "<group>"; };
-		F20481642092CDE300942480 /* JSCJSException.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSCJSException.cpp; sourceTree = "<group>"; };
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@@ -3243,11 +3174,13 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				EDEBC7E0214C709200DD5AC8 /* libjsinspector.a in Frameworks */,
+				3D3CD9411DE5FC5300167DC4 /* libcxxreact.a in Frameworks */,
+				EDEBC71A214B40A300DD5AC8 /* libjsi.a in Frameworks */,
+				EDEBC7DF214C705700DD5AC8 /* libjsiexecutor.a in Frameworks */,
 				53D123971FBF1DF5001B8A10 /* libyoga.a in Frameworks */,
 				3D383D6D1EBD2940005632C8 /* libdouble-conversion.a in Frameworks */,
-				3D383D6E1EBD2940005632C8 /* libjschelpers.a in Frameworks */,
 				3D383D6F1EBD2940005632C8 /* libthird-party.a in Frameworks */,
-				3D3CD9411DE5FC5300167DC4 /* libcxxreact.a in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -3255,14 +3188,42 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				ED297067215023D800B7C4FE /* libjsiexecutor-tvOS.a in Frameworks */,
+				ED296FCB214C9B6C00B7C4FE /* libjsi-tvOS.a in Frameworks */,
+				ED296F83214C974A00B7C4FE /* libyoga.a in Frameworks */,
+				ED296F82214C973700B7C4FE /* libjsinspector-tvOS.a in Frameworks */,
 				2D1D83CE1F74E2DA00615550 /* libdouble-conversion.a in Frameworks */,
-				2D1D83CD1F74E2CE00615550 /* libprivatedata-tvOS.a in Frameworks */,
-				3D383D711EBD2949005632C8 /* libjschelpers.a in Frameworks */,
 				3D383D721EBD2949005632C8 /* libthird-party.a in Frameworks */,
 				3D8ED92C1E5B120100D83D20 /* libcxxreact.a in Frameworks */,
-				3D8ED92D1E5B120100D83D20 /* libyoga.a in Frameworks */,
-				3D3CD9431DE5FC6500167DC4 /* libcxxreact.a in Frameworks */,
-				3D3CD9441DE5FC6500167DC4 /* libjschelpers.a in Frameworks */,
+				3D3CD9441DE5FC6500167DC4 /* (null) in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		ED296FCE214C9CB400B7C4FE /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		ED296FF5214C9E7C00B7C4FE /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		EDEBC756214C283300DD5AC8 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		EDEBC79A214C2A7000DD5AC8 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
 			);
 			runOnlyForDeploymentPostprocessing = 0;
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@@ -3313,8 +3274,6 @@
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-				135A9BFD1E7B0EE600587AEB /* RCTJSCHelpers.h */,
-				135A9BFE1E7B0EE600587AEB /* RCTJSCHelpers.mm */,
 				13134C771E296B2A00B9F3CB /* RCTMessageThread.h */,
 				13134C781E296B2A00B9F3CB /* RCTMessageThread.mm */,
 				13134C7B1E296B2A00B9F3CB /* RCTObjcExecutor.h */,
@@ -3400,29 +3359,33 @@
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 			isa = PBXGroup;
 			children = (
-				13F887A01E2977D800C3C7A1 /* MallocImpl.cpp */,
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-				13F887521E2971C500C3C7A1 /* Demangle.cpp */,
-				13F887531E2971C500C3C7A1 /* StringBase.cpp */,
-				13F887541E2971C500C3C7A1 /* Unicode.cpp */,
+				9F0D8907224160F10053729F /* Assume.cpp */,
 				139D849C1E273B5600323FB7 /* AtomicIntrusiveLinkedList.h */,
-				139D849D1E273B5600323FB7 /* Bits.cpp */,
-				139D849E1E273B5600323FB7 /* Bits.h */,
+				9F0D890B2241611B0053729F /* ColdClass.cpp */,
 				139D849F1E273B5600323FB7 /* Conv.cpp */,
 				139D84A01E273B5600323FB7 /* Conv.h */,
+				9F0D890F224161A90053729F /* Demangle.cpp */,
 				139D84A11E273B5600323FB7 /* dynamic-inl.h */,
 				139D84A21E273B5600323FB7 /* dynamic.cpp */,
 				139D84A31E273B5600323FB7 /* dynamic.h */,
 				139D84A41E273B5600323FB7 /* Exception.h */,
+				9F0D8913224164B70053729F /* F14Table.cpp */,
+				9F0D8917224165770053729F /* Format.cpp */,
+				9F0D891B2241658E0053729F /* json_pointer.cpp */,
 				139D84A71E273B5600323FB7 /* json.cpp */,
 				139D84A81E273B5600323FB7 /* json.h */,
+				9F0D891F224165BA0053729F /* MallocImpl.cpp */,
 				139D84A91E273B5600323FB7 /* Memory.h */,
 				139D84AA1E273B5600323FB7 /* MoveWrapper.h */,
 				139D84AB1E273B5600323FB7 /* Optional.h */,
+				9F0D8923224165D20053729F /* ScopeGuard.cpp */,
 				139D84AC1E273B5600323FB7 /* ScopeGuard.h */,
+				9F0D8927224165F10053729F /* SpookyHashV2.cpp */,
+				9F0D892B224165FC0053729F /* String.cpp */,
+				9F0D892F224166050053729F /* Unicode.cpp */,
 			);
 			name = folly;
-			path = "../third-party/folly-2016.10.31.00";
+			path = "../third-party/folly-2018.10.22.00";
 			sourceTree = "<group>";
 		};
 		13B07FE01A69315300A75B9A /* Modules */ = {
@@ -3450,8 +3413,6 @@
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 				352DCFEE1D19F4C20056D623 /* RCTI18nUtil.h */,
 				352DCFEF1D19F4C20056D623 /* RCTI18nUtil.m */,
-				369123DF1DDC75850095B341 /* RCTJSCSamplingProfiler.h */,
-				369123E01DDC75850095B341 /* RCTJSCSamplingProfiler.m */,
 				13D9FEEC1CDCD93000158BD7 /* RCTKeyboardObserver.h */,
 				13D9FEED1CDCD93000158BD7 /* RCTKeyboardObserver.m */,
 				5960C1B11F0804A00066FD5B /* RCTLayoutAnimation.h */,
@@ -3524,14 +3485,6 @@
 				83A1FE8E1B62643A00BE0E65 /* RCTModalHostViewManager.m */,
 				91076A881F743AB00081B4FA /* RCTModalManager.h */,
 				91076A871F743AB00081B4FA /* RCTModalManager.m */,
-				13B0800C1A69489C00A75B9A /* RCTNavigator.h */,
-				13B0800D1A69489C00A75B9A /* RCTNavigator.m */,
-				13B0800E1A69489C00A75B9A /* RCTNavigatorManager.h */,
-				13B0800F1A69489C00A75B9A /* RCTNavigatorManager.m */,
-				13B080101A69489C00A75B9A /* RCTNavItem.h */,
-				13B080111A69489C00A75B9A /* RCTNavItem.m */,
-				13B080121A69489C00A75B9A /* RCTNavItemManager.h */,
-				13B080131A69489C00A75B9A /* RCTNavItemManager.m */,
 				58114A121AAE854800E7D092 /* RCTPicker.h */,
 				58114A131AAE854800E7D092 /* RCTPicker.m */,
 				58114A141AAE854800E7D092 /* RCTPickerManager.h */,
@@ -3615,10 +3568,10 @@
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 			isa = PBXGroup;
 			children = (
-				9936F3341F5F2F360010BF04 /* privatedata */,
+				EDEBC73C214B463000DD5AC8 /* jsiexecutor */,
+				EDEBC6D8214B3F6800DD5AC8 /* jsi */,
 				130A77021DF767AF001F9587 /* yoga */,
 				AC70D2EA1DE489FC002E6351 /* cxxreact */,
-				3D4A621D1DDD3985001F41B4 /* jschelpers */,
 				EBF21BB91FC497DA0052F4D5 /* jsinspector */,
 			);
 			name = ReactCommon;
@@ -3673,27 +3626,6 @@
 			name = PushNotificationIOS;
 			sourceTree = "<group>";
 		};
-		3D4A621D1DDD3985001F41B4 /* jschelpers */ = {
-			isa = PBXGroup;
-			children = (
-				18C2C6662141C86E004314E0 /* JSException.h */,
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-				F204815E2092CDA400942480 /* JSCJSException.h */,
-				19DED2281E77E29200F089BB /* systemJSCWrapper.cpp */,
-				3D7A27DC1DE32541002E3F95 /* JavaScriptCore.h */,
-				3D92B1071E0369AD0018521A /* JSCHelpers.cpp */,
-				3D92B1081E0369AD0018521A /* JSCHelpers.h */,
-				3D7A27DD1DE32541002E3F95 /* JSCWrapper.cpp */,
-				3D7A27DE1DE32541002E3F95 /* JSCWrapper.h */,
-				3D92B1091E0369AD0018521A /* noncopyable.h */,
-				3D92B10A1E0369AD0018521A /* Unicode.cpp */,
-				3D92B10B1E0369AD0018521A /* Unicode.h */,
-				3D92B10C1E0369AD0018521A /* Value.cpp */,
-				3D92B10D1E0369AD0018521A /* Value.h */,
-			);
-			path = jschelpers;
-			sourceTree = "<group>";
-		};
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@@ -3734,6 +3666,7 @@
 		53D123821FBF1D49001B8A10 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				EDEBC757214C284000DD5AC8 /* JavaScriptCore.framework */,
 				53D123831FBF1D49001B8A10 /* libyoga.a */,
 			);
 			name = Frameworks;
@@ -3845,6 +3778,7 @@
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 				83CBBA001A601CBA00E9B192 /* Products */,
 				53D123821FBF1D49001B8A10 /* Frameworks */,
+				9F2AC95C2239D788005C9C14 /* Recovered References */,
 			);
 			indentWidth = 2;
 			sourceTree = "<group>";
@@ -3858,26 +3792,21 @@
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-				3D3CD90B1DE5FBD600167DC4 /* libjschelpers.a */,
-				3D3CD9181DE5FBD800167DC4 /* libjschelpers.a */,
 				3D3CD9251DE5FBEC00167DC4 /* libcxxreact.a */,
 				3D3CD9321DE5FBEE00167DC4 /* libcxxreact.a */,
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 				139D7ECE1E25DB7D00323FB7 /* libthird-party.a */,
 				3D383D3C1EBD27B6005632C8 /* libthird-party.a */,
 				3D383D621EBD27B9005632C8 /* libdouble-conversion.a */,
-				6B857F231EC51FC600A9D063 /* libReact.a */,
-				6B857F341EC51FCC00A9D063 /* libyoga.a */,
-				6B857F421EC51FCF00A9D063 /* libcxxreact.a */,
-				6B857F4F1EC51FD400A9D063 /* libjschelpers.a */,
-				1882027C1EF48B7E00C9B354 /* libdouble-conversion.a */,
-				188202A21EF48CF700C9B354 /* libthird-party.a */,
-				9936F3131F5F2E4B0010BF04 /* libprivatedata.a */,
-				9936F32F1F5F2E5B0010BF04 /* libprivatedata-tvOS.a */,
 				EBF21BDC1FC498900052F4D5 /* libjsinspector.a */,
 				EBF21BFA1FC4989A0052F4D5 /* libjsinspector-tvOS.a */,
-				18C3A9B21FE1CDCC00DEC48A /* libprivatedata-macOS.a */,
-				18F3BA1C2142F86400AD247D /* libjsinspector-macOS.a */,
+				EDEBC6D6214B3E7000DD5AC8 /* libjsi.a */,
+				EDEBC73B214B45A300DD5AC8 /* libjsiexecutor.a */,
+				ED296FB6214C9A0900B7C4FE /* libjsi-tvOS.a */,
+				ED296FEE214C9CF800B7C4FE /* libjsiexecutor-tvOS.a */,
+				9F2AC95D2239D788005C9C14 /* libReact.a */,
+				9F2AC95E2239D788005C9C14 /* libjsinspector-macOS.a */,
+				9F2AC95F2239D788005C9C14 /* libprivatedata-macOS.a */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -3935,8 +3864,6 @@
 				83CBBA631A601ECA00E9B192 /* RCTJavaScriptExecutor.h */,
 				14200DA81AC179B3008EE6BA /* RCTJavaScriptLoader.h */,
 				AC70D2E81DE489E4002E6351 /* RCTJavaScriptLoader.mm */,
-				135A9BF91E7B0EAE00587AEB /* RCTJSCErrorHandling.h */,
-				135A9BFA1E7B0EAE00587AEB /* RCTJSCErrorHandling.mm */,
 				008341F51D1DB34400876D9A /* RCTJSStackFrame.h */,
 				008341F41D1DB34400876D9A /* RCTJSStackFrame.m */,
 				13A1F71C1A75392D00D3D453 /* RCTKeyCommands.h */,
@@ -3987,18 +3914,25 @@
 			path = Base;
 			sourceTree = "<group>";
 		};
-		9936F3341F5F2F360010BF04 /* privatedata */ = {
+		9F2AC95C2239D788005C9C14 /* Recovered References */ = {
 			isa = PBXGroup;
 			children = (
-				9936F3351F5F2F480010BF04 /* PrivateDataBase.cpp */,
-				9936F3361F5F2F480010BF04 /* PrivateDataBase.h */,
+				18C2C6662141C86E004314E0 /* JSException.h */,
+				6B857F421EC51FCF00A9D063 /* libcxxreact.a */,
+				1882027C1EF48B7E00C9B354 /* libdouble-conversion.a */,
+				6B857F4F1EC51FD400A9D063 /* libjschelpers.a */,
+				188202A21EF48CF700C9B354 /* libthird-party.a */,
+				6B857F341EC51FCC00A9D063 /* libyoga.a */,
 			);
-			name = privatedata;
+			name = "Recovered References";
 			sourceTree = "<group>";
 		};
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 			children = (
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+				EDEBC751214B47E100DD5AC8 /* JSDeltaBundleClient.h */,
+				EDEBC752214B47E100DD5AC8 /* SharedProxyCxxModule.h */,
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 				13DA8A2F2097A90A00276ED4 /* ReactMarker.h */,
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@@ -4062,6 +3978,42 @@
 			path = jsinspector;
 			sourceTree = "<group>";
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+			isa = PBXGroup;
+			children = (
+				EDDA711C2164285A00B2D070 /* JSIExecutor.cpp */,
+				EDDA711B2164285A00B2D070 /* JSINativeModules.cpp */,
+				ED6189672155BBF70000C9A7 /* JSIExecutor.h */,
+				ED6189682155BBF70000C9A7 /* JSINativeModules.h */,
+			);
+			name = jsireact;
+			sourceTree = "<group>";
+		};
+		EDEBC6D8214B3F6800DD5AC8 /* jsi */ = {
+			isa = PBXGroup;
+			children = (
+				EDEBC6D9214B3F6800DD5AC8 /* jsi-inl.h */,
+				EDEBC6DA214B3F6800DD5AC8 /* JSIDynamic.cpp */,
+				EDEBC6DB214B3F6800DD5AC8 /* jsi.cpp */,
+				EDEBC6DC214B3F6800DD5AC8 /* JSIDynamic.h */,
+				EDEBC6DD214B3F6800DD5AC8 /* JSCRuntime.cpp */,
+				EDEBC6DE214B3F6800DD5AC8 /* JSCRuntime.h */,
+				EDEBC6DF214B3F6800DD5AC8 /* BUCK */,
+				EDEBC6E0214B3F6800DD5AC8 /* instrumentation.h */,
+				EDEBC6E1214B3F6800DD5AC8 /* jsi.h */,
+			);
+			path = jsi;
+			sourceTree = "<group>";
+		};
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+			children = (
+				ED6189662155BBDD0000C9A7 /* jsireact */,
+				EDEBC740214B463000DD5AC8 /* BUCK */,
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-				1854FEA21EF484550008DADC /* RCTJSCSamplingProfiler.h in Headers */,
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-				18F3B9C12142F0D300AD247D /* RCTNavigator.h in Headers */,
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-				1854FE6A1EF484270008DADC /* RCTJSCHelpers.h in Headers */,
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-				18F3B9DD2142F14B00AD247D /* PrivateDataBase.h in Headers */,
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 				18F3B9DC2142F14400AD247D /* RCTScrollViewManager.h in Headers */,
-				18F3B9C22142F0D700AD247D /* RCTNavigatorManager.h in Headers */,
+				18F3B9C22142F0D700AD247D /* (null) in Headers */,
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 				18F3B9AF2142F02100AD247D /* RCTCxxConvert.h in Headers */,
-				18F3B9C42142F0DD00AD247D /* RCTNavItemManager.h in Headers */,
+				18F3B9C42142F0DD00AD247D /* (null) in Headers */,
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 				1854FEC31EF484760008DADC /* RCTComponent.h in Headers */,
-				18F3B9E42142F17300AD247D /* JSCTracing.h in Headers */,
+				18F3B9E42142F17300AD247D /* (null) in Headers */,
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 				1854FE511EF484130008DADC /* RCTPlatform.h in Headers */,
-				1854FE3C1EF484130008DADC /* RCTJSCErrorHandling.h in Headers */,
+				1854FE3C1EF484130008DADC /* (null) in Headers */,
 				1854FE4A1EF484130008DADC /* RCTMultipartStreamReader.h in Headers */,
 				1854FE881EF4844A0008DADC /* RCTInspector.h in Headers */,
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 				18F3B9A72142EF8500AD247D /* RCTSurfaceRootShadowViewDelegate.h in Headers */,
-				18F3B9C32142F0DA00AD247D /* RCTNavItem.h in Headers */,
+				18F3B9C32142F0DA00AD247D /* (null) in Headers */,
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-				1854FF4A1EF485C60008DADC /* JSCUtils.h in Headers */,
-				1854FF421EF485C60008DADC /* JSCMemory.h in Headers */,
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+				1854FF421EF485C60008DADC /* (null) in Headers */,
 				1854FF371EF485C60008DADC /* JSBigString.h in Headers */,
 				181B13CB21652BE300D3B7D2 /* ReactMarker.h in Headers */,
-				1854FF3C1EF485C60008DADC /* JSCExecutor.h in Headers */,
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 				1854FF591EF485C60008DADC /* RecoverableError.h in Headers */,
 				1854FF4D1EF485C60008DADC /* JSModulesUnbundle.h in Headers */,
 				1854FF5C1EF485C60008DADC /* SystraceSection.h in Headers */,
-				1854FF581EF485C60008DADC /* Platform.h in Headers */,
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 				1854FF5B1EF485C60008DADC /* SampleCxxModule.h in Headers */,
 				1854FF341EF485C60008DADC /* Instance.h in Headers */,
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-				1854FF481EF485C60008DADC /* JSCSamplingProfiler.h in Headers */,
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-				1854FF461EF485C60008DADC /* JSCPerfStats.h in Headers */,
-				1854FF561EF485C60008DADC /* (null) in Headers */,
+				1854FF481EF485C60008DADC /* (null) in Headers */,
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 				1854FF531EF485C60008DADC /* NativeModule.h in Headers */,
 				1854FF501EF485C60008DADC /* MethodCall.h in Headers */,
 				1854FF4C1EF485C60008DADC /* JSIndexedRAMBundle.h in Headers */,
-				1854FF441EF485C60008DADC /* JSCNativeModules.h in Headers */,
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 				1854FF521EF485C60008DADC /* ModuleRegistry.h in Headers */,
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-				1854FF6B1EF487E80008DADC /* Unicode.h in Headers */,
-				1854FF681EF487DE0008DADC /* JSCWrapper.h in Headers */,
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 				18C2C66B2141C8AC004314E0 /* JSException.h in Headers */,
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 			productType = "com.apple.product-type.library.static";
 		};
-		EBF21BDD1FC4989A0052F4D5 /* jsinspector-tvOS */ = {
+		ED296FD0214C9CF800B7C4FE /* jsiexecutor-tvOS */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = EBF21BF71FC4989A0052F4D5 /* Build configuration list for PBXNativeTarget "jsinspector-tvOS" */;
+			buildConfigurationList = ED296FEB214C9CF800B7C4FE /* Build configuration list for PBXNativeTarget "jsiexecutor-tvOS" */;
 			buildPhases = (
-				EBF21BE21FC4989A0052F4D5 /* Headers */,
-				EBF21BE91FC4989A0052F4D5 /* Copy Headers */,
-				EBF21BF11FC4989A0052F4D5 /* Sources */,
+				ED296FD1214C9CF800B7C4FE /* Headers */,
+				ED296FDC214C9CF800B7C4FE /* Copy Headers */,
+				ED296FE1214C9CF800B7C4FE /* Sources */,
+				ED296FF5214C9E7C00B7C4FE /* Frameworks */,
 			);
 			buildRules = (
 			);
 			dependencies = (
+				ED296FFE214C9EC600B7C4FE /* PBXTargetDependency */,
+				ED296FFC214C9EC000B7C4FE /* PBXTargetDependency */,
+				ED296FF8214C9EAA00B7C4FE /* PBXTargetDependency */,
 			);
-			name = "jsinspector-tvOS";
+			name = "jsiexecutor-tvOS";
 			productName = "React-tvOS";
-			productReference = EBF21BFA1FC4989A0052F4D5 /* libjsinspector-tvOS.a */;
+			productReference = ED296FEE214C9CF800B7C4FE /* libjsiexecutor-tvOS.a */;
 			productType = "com.apple.product-type.library.static";
 		};
-/* End PBXNativeTarget section */
-
+		EDEBC6BA214B3E7000DD5AC8 /* jsi */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = EDEBC6D3214B3E7000DD5AC8 /* Build configuration list for PBXNativeTarget "jsi" */;
+			buildPhases = (
+				EDEBC6BB214B3E7000DD5AC8 /* Headers */,
+				EDEBC6C6214B3E7000DD5AC8 /* Copy Headers */,
+				EDEBC6CA214B3E7000DD5AC8 /* Sources */,
+				EDEBC756214C283300DD5AC8 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				EDEBC7CC214C516800DD5AC8 /* PBXTargetDependency */,
+			);
+			name = jsi;
+			productName = React;
+			productReference = EDEBC6D6214B3E7000DD5AC8 /* libjsi.a */;
+			productType = "com.apple.product-type.library.static";
+		};
+		EDEBC724214B45A300DD5AC8 /* jsiexecutor */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = EDEBC738214B45A300DD5AC8 /* Build configuration list for PBXNativeTarget "jsiexecutor" */;
+			buildPhases = (
+				EDEBC729214B45A300DD5AC8 /* Headers */,
+				EDEBC72F214B45A300DD5AC8 /* Copy Headers */,
+				EDEBC734214B45A300DD5AC8 /* Sources */,
+				EDEBC79A214C2A7000DD5AC8 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				ED296F7E214C957300B7C4FE /* PBXTargetDependency */,
+				EDEBC7D3214C528C00DD5AC8 /* PBXTargetDependency */,
+				EDEBC7CE214C523F00DD5AC8 /* PBXTargetDependency */,
+			);
+			name = jsiexecutor;
+			productName = React;
+			productReference = EDEBC73B214B45A300DD5AC8 /* libjsiexecutor.a */;
+			productType = "com.apple.product-type.library.static";
+		};
+/* End PBXNativeTarget section */
+
 /* Begin PBXProject section */
 		83CBB9F71A601CBA00E9B192 /* Project object */ = {
 			isa = PBXProject;
@@ -5387,8 +5319,6 @@
 					};
 					139D7ECD1E25DB7D00323FB7 = {
 						CreatedOnToolsVersion = 8.1;
-						DevelopmentTeam = V9WTTPBFK9;
-						ProvisioningStyle = Automatic;
 					};
 					1882027B1EF48B7E00C9B354 = {
 						CreatedOnToolsVersion = 8.3.2;
@@ -5400,13 +5330,6 @@
 					};
 					2D2A28121D9B038B00D4039D = {
 						CreatedOnToolsVersion = 8.0;
-						ProvisioningStyle = Automatic;
-					};
-					3D383D211EBD27B6005632C8 = {
-						DevelopmentTeam = V9WTTPBFK9;
-					};
-					3D383D3D1EBD27B9005632C8 = {
-						DevelopmentTeam = V9WTTPBFK9;
 					};
 					83CBBA2D1A601D0E00E9B192 = {
 						CreatedOnToolsVersion = 6.1.1;
@@ -5435,9 +5358,7 @@
 				3D3CD9191DE5FBEC00167DC4 /* cxxreact */,
 				6B857F351EC51FCF00A9D063 /* cxxreact-macOS */,
 				3D3CD9261DE5FBEE00167DC4 /* cxxreact-tvOS */,
-				3D3CD8FF1DE5FBD600167DC4 /* jschelpers */,
 				6B857F431EC51FD400A9D063 /* jschelpers-macOS */,
-				3D3CD90C1DE5FBD800167DC4 /* jschelpers-tvOS */,
 				EBF21BBF1FC498900052F4D5 /* jsinspector */,
 				18F3BA132142F86400AD247D /* jsinspector-macOS */,
 				EBF21BDD1FC4989A0052F4D5 /* jsinspector-tvOS */,
@@ -5447,9 +5368,11 @@
 				139D7E871E25C6D100323FB7 /* double-conversion */,
 				1882027B1EF48B7E00C9B354 /* double-conversion-macOS */,
 				3D383D3D1EBD27B9005632C8 /* double-conversion-tvOS */,
-				9936F2F81F5F2E4B0010BF04 /* privatedata */,
 				18C3A9A81FE1CDCC00DEC48A /* privatedata-macOS */,
-				9936F3141F5F2E5B0010BF04 /* privatedata-tvOS */,
+				EDEBC6BA214B3E7000DD5AC8 /* jsi */,
+				EDEBC724214B45A300DD5AC8 /* jsiexecutor */,
+				ED296F98214C9A0900B7C4FE /* jsi-tvOS */,
+				ED296FD0214C9CF800B7C4FE /* jsiexecutor-tvOS */,
 			);
 		};
 /* End PBXProject section */
@@ -5467,7 +5390,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "export RCT_METRO_PORT=\"${RCT_METRO_PORT:=8081}\"\necho \"export RCT_METRO_PORT=${RCT_METRO_PORT}\" > \"${SRCROOT}/../scripts/.packager.env\"\nif [ -z \"${RCT_NO_LAUNCH_PACKAGER+xxx}\" ] ; then\n  if nc -w 5 -z localhost ${RCT_METRO_PORT} ; then\n    if ! curl -s \"http://localhost:${RCT_METRO_PORT}/status\" | grep -q \"packager-status:running\" ; then\n      echo \"Port ${RCT_METRO_PORT} already in use, packager is either not running or not running correctly\"\n      exit 2\n    fi\n  else\n    open \"$SRCROOT/../scripts/launchPackager.command\" || echo \"Can't start packager automatically\"\n  fi\nfi";
+			shellScript = "export RCT_METRO_PORT=\"${RCT_METRO_PORT:=8081}\"\necho \"export RCT_METRO_PORT=${RCT_METRO_PORT}\" > \"${SRCROOT}/../scripts/.packager.env\"\nif [ -z \"${RCT_NO_LAUNCH_PACKAGER+xxx}\" ] ; then\n  if nc -w 5 -z localhost ${RCT_METRO_PORT} ; then\n    if ! curl -s \"http://localhost:${RCT_METRO_PORT}/status\" | grep -q \"packager-status:running\" ; then\n      echo \"Port ${RCT_METRO_PORT} already in use, packager is either not running or not running correctly\"\n      exit 2\n    fi\n  else\n    open \"$SRCROOT/../scripts/launchPackager.command\" || echo \"Can't start packager automatically\"\n  fi\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		142C4F7F1B582EA6001F0B58 /* Include RCTJSCProfiler */ = {
@@ -5482,7 +5405,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "if [[ \"$CONFIGURATION\" == \"Debug\" ]] && [[ -d \"/tmp/RCTJSCProfiler\" ]]; then\n   find \"${CONFIGURATION_BUILD_DIR}\" -name '*.app' | xargs -I{} sh -c 'cp -r /tmp/RCTJSCProfiler \"$1\"' -- {}\nfi";
+			shellScript = "if [[ \"$CONFIGURATION\" == \"Debug\" ]] && [[ -d \"/tmp/RCTJSCProfiler\" ]]; then\n   find \"${CONFIGURATION_BUILD_DIR}\" -name '*.app' | xargs -I{} sh -c 'cp -r /tmp/RCTJSCProfiler \"$1\"' -- {}\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		18632BFE1EF495130010A3BB /* Start Packager */ = {
@@ -5491,9 +5414,70 @@
 			files = (
 			);
 			inputPaths = (
+				"../scripts/ios-install-third-party.sh",
 			);
 			name = "Start Packager";
 			outputPaths = (
+				"../third-party/glog-0.3.5/src/config.h",
+				"../third-party/glog-0.3.5/src/demangle.cc",
+				"../third-party/glog-0.3.5/src/demangle.h",
+				"../third-party/glog-0.3.5/src/logging.cc",
+				"../third-party/glog-0.3.5/src/raw_logging.cc",
+				"../third-party/glog-0.3.5/src/signalhandler.cc",
+				"../third-party/glog-0.3.5/src/stacktrace.h",
+				"../third-party/glog-0.3.5/src/symbolize.cc",
+				"../third-party/glog-0.3.5/src/symbolize.h",
+				"../third-party/glog-0.3.5/src/utilities.cc",
+				"../third-party/glog-0.3.5/src/utilities.h",
+				"../third-party/glog-0.3.5/src/vlog_is_on.cc",
+				"../third-party/glog-0.3.5/src/glog/log_severity.h",
+				"../third-party/glog-0.3.5/src/glog/logging.h",
+				"../third-party/glog-0.3.5/src/glog/raw_logging.h",
+				"../third-party/glog-0.3.5/src/glog/stl_logging.h",
+				"../third-party/glog-0.3.5/src/glog/vlog_is_on.h",
+				"../third-party/folly-2018.10.22.00/folly/memory/detail/MallocImpl.cpp",
+				"../third-party/folly-2018.10.22.00/folly/Demangle.cpp",
+				"../third-party/folly-2018.10.22.00/folly/Unicode.cpp",
+				"../third-party/folly-2018.10.22.00/folly/AtomicIntrusiveLinkedList.h",
+				"../third-party/folly-2018.10.22.00/folly/Conv.cpp",
+				"../third-party/folly-2018.10.22.00/folly/Conv.h",
+				"../third-party/folly-2018.10.22.00/folly/dynamic-inl.h",
+				"../third-party/folly-2018.10.22.00/folly/dynamic.cpp",
+				"../third-party/folly-2018.10.22.00/folly/dynamic.h",
+				"../third-party/folly-2018.10.22.00/folly/Exception.h",
+				"../third-party/folly-2018.10.22.00/folly/json.cpp",
+				"../third-party/folly-2018.10.22.00/folly/json.h",
+				"../third-party/folly-2018.10.22.00/folly/Memory.h",
+				"../third-party/folly-2018.10.22.00/folly/MoveWrapper.h",
+				"../third-party/folly-2018.10.22.00/folly/Optional.h",
+				"../third-party/folly-2018.10.22.00/folly/ScopeGuard.h",
+				"../third-party/folly-2018.10.22.00/folly/json_pointer.cpp",
+				"../third-party/folly-2018.10.22.00/folly/String.cpp",
+				"../third-party/folly-2018.10.22.00/folly/detail/Demangle.cpp",
+				"../third-party/folly-2018.10.22.00/folly/hash/SpookyHashV2.cpp",
+				"../third-party/folly-2018.10.22.00/folly/lang/ColdClass.cpp",
+				"../third-party/folly-2018.10.22.00/folly/container/detail/F14Table.cpp",
+				"../third-party/folly-2018.10.22.00/folly/ScopeGuard.cpp",
+				"../third-party/folly-2018.10.22.00/folly/lang/Assume.cpp",
+				"../third-party/folly-2018.10.22.00/folly/Format.cpp",
+				"../third-party/double-conversion-1.1.6/src/bignum-dtoa.cc",
+				"../third-party/double-conversion-1.1.6/src/bignum-dtoa.h",
+				"../third-party/double-conversion-1.1.6/src/bignum.cc",
+				"../third-party/double-conversion-1.1.6/src/bignum.h",
+				"../third-party/double-conversion-1.1.6/src/cached-powers.cc",
+				"../third-party/double-conversion-1.1.6/src/cached-powers.h",
+				"../third-party/double-conversion-1.1.6/src/diy-fp.cc",
+				"../third-party/double-conversion-1.1.6/src/diy-fp.h",
+				"../third-party/double-conversion-1.1.6/src/double-conversion.cc",
+				"../third-party/double-conversion-1.1.6/src/double-conversion.h",
+				"../third-party/double-conversion-1.1.6/src/fast-dtoa.cc",
+				"../third-party/double-conversion-1.1.6/src/fast-dtoa.h",
+				"../third-party/double-conversion-1.1.6/src/fixed-dtoa.cc",
+				"../third-party/double-conversion-1.1.6/src/fixed-dtoa.h",
+				"../third-party/double-conversion-1.1.6/src/ieee.h",
+				"../third-party/double-conversion-1.1.6/src/strtod.cc",
+				"../third-party/double-conversion-1.1.6/src/strtod.h",
+				"../third-party/double-conversion-1.1.6/src/utils.h",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -5608,14 +5592,31 @@
 			buildActionMask = 2147483647;
 			files = (
 				139D84B01E273B5600323FB7 /* Conv.cpp in Sources */,
-				13F887591E2971D400C3C7A1 /* StringBase.cpp in Sources */,
+				83281387217EB73400574D55 /* (null) in Sources */,
+				833D02BD217EBD2600A23750 /* (null) in Sources */,
+				83281390217EB76C00574D55 /* (null) in Sources */,
+				833D02BA217EBCFA00A23750 /* (null) in Sources */,
 				139D84B11E273B5600323FB7 /* dynamic.cpp in Sources */,
-				13F887A21E2977FF00C3C7A1 /* MallocImpl.cpp in Sources */,
-				139D84AF1E273B5600323FB7 /* Bits.cpp in Sources */,
-				13F8875A1E2971D400C3C7A1 /* Unicode.cpp in Sources */,
-				13F887581E2971D400C3C7A1 /* Demangle.cpp in Sources */,
+				8328138D217EB75C00574D55 /* (null) in Sources */,
+				9F0D892C224165FC0053729F /* String.cpp in Sources */,
+				9F0D891C2241658E0053729F /* json_pointer.cpp in Sources */,
+				13F8875A1E2971D400C3C7A1 /* (null) in Sources */,
+				9F0D8910224161A90053729F /* Demangle.cpp in Sources */,
+				83281399217EB79D00574D55 /* (null) in Sources */,
+				9F0D8908224160F20053729F /* Assume.cpp in Sources */,
+				9F0D8924224165D20053729F /* ScopeGuard.cpp in Sources */,
+				83281393217EB77D00574D55 /* (null) in Sources */,
+				9F0D8930224166060053729F /* Unicode.cpp in Sources */,
+				9F0D8920224165BA0053729F /* MallocImpl.cpp in Sources */,
+				9F0D8918224165770053729F /* Format.cpp in Sources */,
+				13F887581E2971D400C3C7A1 /* (null) in Sources */,
+				9F0D890C2241611B0053729F /* ColdClass.cpp in Sources */,
+				9F0D8928224165F10053729F /* SpookyHashV2.cpp in Sources */,
+				83281396217EB79000574D55 /* (null) in Sources */,
+				9F0D8914224164B70053729F /* F14Table.cpp in Sources */,
+				83281384217EB70900574D55 /* (null) in Sources */,
+				8328138A217EB74C00574D55 /* (null) in Sources */,
 				139D84B31E273B5600323FB7 /* json.cpp in Sources */,
-				13F8879F1E29741900C3C7A1 /* BitsFunctexcept.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -5623,7 +5624,6 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				598FD1931F817284006C54CB /* PrivateDataBase.cpp in Sources */,
 				3DC159E41E83E1AE007B1282 /* RCTRootContentView.m in Sources */,
 				2D3B5EC91D9B095C00451313 /* RCTBorderDrawing.m in Sources */,
 				189727C12141CE42002A4E2A /* RCTPickerManager.m in Sources */,
@@ -5675,13 +5675,11 @@
 				13134C971E296B2A00B9F3CB /* RCTObjcExecutor.mm in Sources */,
 				130E3D8B1E6A083900ACE484 /* RCTDevSettings.mm in Sources */,
 				2D3B5E951D9B087C00451313 /* RCTAssert.m in Sources */,
-				3DF1BE851F26577300068F1A /* JSCTracing.cpp in Sources */,
 				2D3B5EB61D9B091400451313 /* RCTExceptionsManager.m in Sources */,
 				C606692F1F3CC60500E67165 /* RCTModuleMethod.mm in Sources */,
 				2D3B5EA51D9B08C700451313 /* RCTRootView.m in Sources */,
 				13134C871E296B2A00B9F3CB /* RCTCxxBridge.mm in Sources */,
 				CF2731C31E7B8DF30044CA4F /* RCTDeviceInfo.m in Sources */,
-				EBF21C001FC499A80052F4D5 /* InspectorInterfaces.cpp in Sources */,
 				597633371F4E021D005BE8A4 /* RCTShadowView+Internal.m in Sources */,
 				189727B12141CE0F002A4E2A /* RCTDatePickerManager.m in Sources */,
 				2D3B5EB11D9B090100451313 /* RCTAppState.m in Sources */,
@@ -5705,8 +5703,6 @@
 				591F78DB202ADB22004A668C /* RCTLayout.m in Sources */,
 				2D3B5EB51D9B091100451313 /* RCTDevMenu.m in Sources */,
 				2D3B5EBD1D9B092A00451313 /* RCTTiming.m in Sources */,
-				135A9C041E7B0F6400587AEB /* RCTJSCErrorHandling.mm in Sources */,
-				189727AF2141CDF7002A4E2A /* RCTDatePicker.m in Sources */,
 				2D3B5EA81D9B08D300451313 /* RCTUtils.m in Sources */,
 				18F3BA0D2142F49600AD247D /* RCTProgressView.m in Sources */,
 				1821ACEA21E7D94A00B151F7 /* RCTDynamicColor.m in Sources */,
@@ -5721,7 +5717,6 @@
 				2D3B5EB01D9B08FE00451313 /* RCTAlertManager.m in Sources */,
 				13134C9B1E296B2A00B9F3CB /* RCTCxxMethod.mm in Sources */,
 				2D3B5E9C1D9B08A300451313 /* RCTImageSource.m in Sources */,
-				3DDEC1521DDCE0CA0020BBDF /* RCTJSCSamplingProfiler.m in Sources */,
 				657734861EE834D900A0E9EA /* RCTInspectorDevServerHelper.mm in Sources */,
 				2D74EAFA1DAE9590003B751B /* RCTMultipartDataTask.m in Sources */,
 				657734951EE8356100A0E9EA /* RCTInspectorPackagerConnection.m in Sources */,
@@ -5729,10 +5724,9 @@
 				2D3B5EBB1D9B092300451313 /* RCTI18nManager.m in Sources */,
 				2D3B5EBE1D9B092D00451313 /* RCTUIManager.m in Sources */,
 				C60128AE1F3D1258009DF9FF /* RCTCxxConvert.m in Sources */,
+				2D3B5EDD1D9B09A300451313 /* RCTProgressViewManager.m in Sources */,
 				2D3B5E9A1D9B089D00451313 /* RCTEventDispatcher.m in Sources */,
-				135A9C051E7B0F7500587AEB /* RCTJSCHelpers.mm in Sources */,
-				189727A52141CDCA002A4E2A /* RCTProfileTrampoline-i386.S in Sources */,
-				189727DF2141CE9E002A4E2A /* RCTWebViewManager.m in Sources */,
+				2D3B5ED61D9B098400451313 /* RCTModalHostViewManager.m in Sources */,
 				2D3B5EC71D9B095600451313 /* RCTActivityIndicatorView.m in Sources */,
 				2D3B5EB21D9B090300451313 /* RCTAsyncLocalStorage.m in Sources */,
 			);
@@ -5746,14 +5740,14 @@
 				189727E62141CEB9002A4E2A /* RCTScrollContentShadowView.m in Sources */,
 				189727A02141CDAB002A4E2A /* RCTPerfMonitor.m in Sources */,
 				189727562141CC8F002A4E2A /* RCTEventDispatcher.m in Sources */,
-				189727EC2141CED3002A4E2A /* PrivateDataBase.cpp in Sources */,
+				189727EC2141CED3002A4E2A /* (null) in Sources */,
 				189727942141CD81002A4E2A /* RCTLayoutAnimation.m in Sources */,
 				189727892141CD5D002A4E2A /* RCTAsyncLocalStorage.m in Sources */,
 				189727A32141CDBE002A4E2A /* RCTProfileTrampoline-arm64.S in Sources */,
 				189727572141CC93002A4E2A /* RCTFrameUpdate.m in Sources */,
 				189727802141CD33002A4E2A /* RCTDevLoadingView.m in Sources */,
 				1897275F2141CCAE002A4E2A /* RCTModuleData.mm in Sources */,
-				189727BD2141CE36002A4E2A /* RCTNavItemManager.m in Sources */,
+				189727BD2141CE36002A4E2A /* (null) in Sources */,
 				189727EE2141CFF6002A4E2A /* RCTErrorInfo.m in Sources */,
 				189727932141CD7E002A4E2A /* RCTKeyboardObserver.m in Sources */,
 				1897275E2141CCAA002A4E2A /* RCTManagedPointer.mm in Sources */,
@@ -5785,7 +5779,7 @@
 				189727652141CCC3002A4E2A /* RCTPlatform.m in Sources */,
 				189727DB2141CE95002A4E2A /* RCTView.m in Sources */,
 				189727DC2141CE98002A4E2A /* RCTViewManager.m in Sources */,
-				189727BC2141CE33002A4E2A /* RCTNavItem.m in Sources */,
+				189727BC2141CE33002A4E2A /* (null) in Sources */,
 				189727622141CCB9002A4E2A /* RCTMultipartStreamReader.m in Sources */,
 				1897276C2141CCE0002A4E2A /* RCTUtils.m in Sources */,
 				189727752141CD08002A4E2A /* NSDataBigString.mm in Sources */,
@@ -5804,7 +5798,7 @@
 				189727532141CC85002A4E2A /* RCTConvert.m in Sources */,
 				189727CC2141CE6C002A4E2A /* RCTShadowView+Internal.m in Sources */,
 				189727902141CD74002A4E2A /* RCTI18nManager.m in Sources */,
-				189727BB2141CE30002A4E2A /* RCTNavigatorManager.m in Sources */,
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+				);
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+				);
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+				);
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 				PRODUCT_NAME = "$(TARGET_NAME)";
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 				RUN_CLANG_STATIC_ANALYZER = YES;
 			};
 			name = Debug;
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 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/privatedata;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
 				RUN_CLANG_STATIC_ANALYZER = NO;
 			};
 			name = Release;
 		};
-		9936F32D1F5F2E5B0010BF04 /* Debug */ = {
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 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/privatedata;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
 				SDKROOT = appletvos;
 			};
 			name = Debug;
 		};
-		9936F32E1F5F2E5B0010BF04 /* Release */ = {
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-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/privatedata;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
 				SDKROOT = appletvos;
 			};
 			name = Release;
 		};
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 					arm64e,
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-				CLANG_STATIC_ANALYZER_MODE = deep;
-				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
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+				DEBUG_INFORMATION_FORMAT = dwarf;
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+				GCC_NO_COMMON_BLOCKS = YES;
+				HEADER_SEARCH_PATHS = (
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+					"$(SRCROOT)/../third-party/folly-2018.10.22.00",
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+				);
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-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
-				RUN_CLANG_STATIC_ANALYZER = YES;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsi;
+				SDKROOT = appletvos;
 			};
 			name = Debug;
 		};
-		EBF21BDB1FC498900052F4D5 /* Release */ = {
+		ED296FB5214C9A0900B7C4FE /* Release */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
 			buildSettings = {
 				ARCHS = (
 					"$(ARCHS_STANDARD)",
 					arm64e,
 				);
+				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
-				CLANG_STATIC_ANALYZER_MODE = deep;
-				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
-				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_SUSPICIOUS_MOVES = YES;
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				GCC_NO_COMMON_BLOCKS = YES;
+				HEADER_SEARCH_PATHS = (
+					"$(SRCROOT)/../third-party/boost_1_63_0",
+					"$(SRCROOT)/../third-party/folly-2018.10.22.00",
+					"$(SRCROOT)/../third-party/glog-0.3.5/src",
+				);
+				OTHER_CFLAGS = (
+					"-DFOLLY_NO_CONFIG",
+					"-DFOLLY_MOBILE=1",
+					"-DFOLLY_USE_LIBCPP=1",
+				);
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
-				RUN_CLANG_STATIC_ANALYZER = NO;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsi;
+				SDKROOT = appletvos;
 			};
 			name = Release;
 		};
-		EBF21BF81FC4989A0052F4D5 /* Debug */ = {
+		ED296FEC214C9CF800B7C4FE /* Debug */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
 			buildSettings = {
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
@@ -7430,16 +7413,25 @@
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_TESTABILITY = YES;
 				GCC_NO_COMMON_BLOCKS = YES;
+				HEADER_SEARCH_PATHS = (
+					"$(SRCROOT)/../third-party/boost_1_63_0",
+					"$(SRCROOT)/../third-party/folly-2018.10.22.00",
+					"$(SRCROOT)/../third-party/glog-0.3.5/src",
+				);
+				OTHER_CFLAGS = (
+					"-DFOLLY_NO_CONFIG",
+					"-DFOLLY_MOBILE=1",
+					"-DFOLLY_USE_LIBCPP=1",
+				);
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsireact;
 				SDKROOT = appletvos;
 			};
 			name = Debug;
 		};
-		EBF21BF91FC4989A0052F4D5 /* Release */ = {
+		ED296FED214C9CF800B7C4FE /* Release */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
 			buildSettings = {
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
@@ -7449,13 +7441,81 @@
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_NO_COMMON_BLOCKS = YES;
+				HEADER_SEARCH_PATHS = (
+					"$(SRCROOT)/../third-party/boost_1_63_0",
+					"$(SRCROOT)/../third-party/folly-2018.10.22.00",
+					"$(SRCROOT)/../third-party/glog-0.3.5/src",
+				);
+				OTHER_CFLAGS = (
+					"-DFOLLY_NO_CONFIG",
+					"-DFOLLY_MOBILE=1",
+					"-DFOLLY_USE_LIBCPP=1",
+				);
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsinspector;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsireact;
 				SDKROOT = appletvos;
 			};
 			name = Release;
 		};
+		EDEBC6D4214B3E7000DD5AC8 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
+				CLANG_STATIC_ANALYZER_MODE = deep;
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsi;
+				RUN_CLANG_STATIC_ANALYZER = YES;
+			};
+			name = Debug;
+		};
+		EDEBC6D5214B3E7000DD5AC8 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
+				CLANG_STATIC_ANALYZER_MODE = deep;
+				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsi;
+				RUN_CLANG_STATIC_ANALYZER = NO;
+			};
+			name = Release;
+		};
+		EDEBC739214B45A300DD5AC8 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
+				CLANG_STATIC_ANALYZER_MODE = deep;
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsireact;
+				RUN_CLANG_STATIC_ANALYZER = YES;
+			};
+			name = Debug;
+		};
+		EDEBC73A214B45A300DD5AC8 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 3D788F841EBD2D240063D616 /* third-party.xcconfig */;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
+				CLANG_STATIC_ANALYZER_MODE = deep;
+				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
+				OTHER_LDFLAGS = "-ObjC";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/local/include/jsireact;
+				RUN_CLANG_STATIC_ANALYZER = NO;
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -7558,24 +7618,6 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		3D3CD9081DE5FBD600167DC4 /* Build configuration list for PBXNativeTarget "jschelpers" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				3D3CD9091DE5FBD600167DC4 /* Debug */,
-				3D3CD90A1DE5FBD600167DC4 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		3D3CD9151DE5FBD800167DC4 /* Build configuration list for PBXNativeTarget "jschelpers-tvOS" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				3D3CD9161DE5FBD800167DC4 /* Debug */,
-				3D3CD9171DE5FBD800167DC4 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
 		3D3CD9221DE5FBEC00167DC4 /* Build configuration list for PBXNativeTarget "cxxreact" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
@@ -7648,38 +7690,56 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		9936F3101F5F2E4B0010BF04 /* Build configuration list for PBXNativeTarget "privatedata" */ = {
+		EBF21BD91FC498900052F4D5 /* Build configuration list for PBXNativeTarget "jsinspector" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				EBF21BDA1FC498900052F4D5 /* Debug */,
+				EBF21BDB1FC498900052F4D5 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		EBF21BF71FC4989A0052F4D5 /* Build configuration list for PBXNativeTarget "jsinspector-tvOS" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				9936F3111F5F2E4B0010BF04 /* Debug */,
-				9936F3121F5F2E4B0010BF04 /* Release */,
+				EBF21BF81FC4989A0052F4D5 /* Debug */,
+				EBF21BF91FC4989A0052F4D5 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		9936F32C1F5F2E5B0010BF04 /* Build configuration list for PBXNativeTarget "privatedata-tvOS" */ = {
+		ED296FB3214C9A0900B7C4FE /* Build configuration list for PBXNativeTarget "jsi-tvOS" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				9936F32D1F5F2E5B0010BF04 /* Debug */,
-				9936F32E1F5F2E5B0010BF04 /* Release */,
+				ED296FB4214C9A0900B7C4FE /* Debug */,
+				ED296FB5214C9A0900B7C4FE /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		EBF21BD91FC498900052F4D5 /* Build configuration list for PBXNativeTarget "jsinspector" */ = {
+		ED296FEB214C9CF800B7C4FE /* Build configuration list for PBXNativeTarget "jsiexecutor-tvOS" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				EBF21BDA1FC498900052F4D5 /* Debug */,
-				EBF21BDB1FC498900052F4D5 /* Release */,
+				ED296FEC214C9CF800B7C4FE /* Debug */,
+				ED296FED214C9CF800B7C4FE /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		EBF21BF71FC4989A0052F4D5 /* Build configuration list for PBXNativeTarget "jsinspector-tvOS" */ = {
+		EDEBC6D3214B3E7000DD5AC8 /* Build configuration list for PBXNativeTarget "jsi" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
-				EBF21BF81FC4989A0052F4D5 /* Debug */,
-				EBF21BF91FC4989A0052F4D5 /* Release */,
+				EDEBC6D4214B3E7000DD5AC8 /* Debug */,
+				EDEBC6D5214B3E7000DD5AC8 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		EDEBC738214B45A300DD5AC8 /* Build configuration list for PBXNativeTarget "jsiexecutor" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				EDEBC739214B45A300DD5AC8 /* Debug */,
+				EDEBC73A214B45A300DD5AC8 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
diff --git a/React/UIUtils/RCTUIUtils.h b/React/UIUtils/RCTUIUtils.h
index 1c1dfa9c0152e6..3abee752ae1cc3 100644
--- a/React/UIUtils/RCTUIUtils.h
+++ b/React/UIUtils/RCTUIUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/UIUtils/RCTUIUtils.m b/React/UIUtils/RCTUIUtils.m
index 17d8a8567278cb..dcc3353ccf6f60 100644
--- a/React/UIUtils/RCTUIUtils.m
+++ b/React/UIUtils/RCTUIUtils.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTActivityIndicatorView.h b/React/Views/RCTActivityIndicatorView.h
index 5eb25b2d1d53f6..1f5c8a0ade3725 100644
--- a/React/Views/RCTActivityIndicatorView.h
+++ b/React/Views/RCTActivityIndicatorView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTActivityIndicatorView.m b/React/Views/RCTActivityIndicatorView.m
index b2d6221e809192..7ae4eecda960ea 100644
--- a/React/Views/RCTActivityIndicatorView.m
+++ b/React/Views/RCTActivityIndicatorView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTActivityIndicatorViewManager.h b/React/Views/RCTActivityIndicatorViewManager.h
index 9871a9d7d67be4..be5d278e76d8d2 100644
--- a/React/Views/RCTActivityIndicatorViewManager.h
+++ b/React/Views/RCTActivityIndicatorViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTActivityIndicatorViewManager.m b/React/Views/RCTActivityIndicatorViewManager.m
index 4fdafebb72ca35..f0819ffa6b9654 100644
--- a/React/Views/RCTActivityIndicatorViewManager.m
+++ b/React/Views/RCTActivityIndicatorViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTAnimationType.h b/React/Views/RCTAnimationType.h
index c17f3b367bfd3b..cd0b8f2bf04156 100644
--- a/React/Views/RCTAnimationType.h
+++ b/React/Views/RCTAnimationType.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTAutoInsetsProtocol.h b/React/Views/RCTAutoInsetsProtocol.h
index 6a1c8c8e19b176..56cfc73be20632 100644
--- a/React/Views/RCTAutoInsetsProtocol.h
+++ b/React/Views/RCTAutoInsetsProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTBorderDrawing.h b/React/Views/RCTBorderDrawing.h
index c066b3b24b1446..43f416fb483d4e 100644
--- a/React/Views/RCTBorderDrawing.h
+++ b/React/Views/RCTBorderDrawing.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,6 +8,7 @@
 #import "RCTUIKit.h" // TODO(macOS ISS#2323203)
 
 #import <React/RCTBorderStyle.h>
+#import <React/RCTDefines.h>
 
 typedef struct {
   CGFloat topLeft;
@@ -33,24 +34,24 @@ typedef struct {
 /**
  * Determine if the border widths, colors and radii are all equal.
  */
-BOOL RCTBorderInsetsAreEqual(UIEdgeInsets borderInsets);
-BOOL RCTCornerRadiiAreEqual(RCTCornerRadii cornerRadii);
-BOOL RCTBorderColorsAreEqual(RCTBorderColors borderColors);
+RCT_EXTERN BOOL RCTBorderInsetsAreEqual(UIEdgeInsets borderInsets);
+RCT_EXTERN BOOL RCTCornerRadiiAreEqual(RCTCornerRadii cornerRadii);
+RCT_EXTERN BOOL RCTBorderColorsAreEqual(RCTBorderColors borderColors);
 
 /**
  * Convert RCTCornerRadii to RCTCornerInsets by applying border insets.
  * Effectively, returns radius - inset, with a lower bound of 0.0.
  */
-RCTCornerInsets RCTGetCornerInsets(RCTCornerRadii cornerRadii,
-                                   UIEdgeInsets borderInsets);
+RCT_EXTERN RCTCornerInsets RCTGetCornerInsets(RCTCornerRadii cornerRadii,
+                                              UIEdgeInsets borderInsets);
 
 /**
  * Create a CGPath representing a rounded rectangle with the specified bounds
  * and corner insets. Note that the CGPathRef must be released by the caller.
  */
-CGPathRef RCTPathCreateWithRoundedRect(CGRect bounds,
-                                       RCTCornerInsets cornerInsets,
-                                       const CGAffineTransform *transform);
+RCT_EXTERN CGPathRef RCTPathCreateWithRoundedRect(CGRect bounds,
+                                                  RCTCornerInsets cornerInsets,
+                                                  const CGAffineTransform *transform);
 
 /**
  * Draw a CSS-compliant border as an image. You can determine if it's scalable
@@ -59,11 +60,11 @@ CGPathRef RCTPathCreateWithRoundedRect(CGRect bounds,
  * `borderInsets` defines the border widths for each edge.
  * `scaleFactor` defines the backing scale factor of the device for supporting high-resolution drawing.
  */
-UIImage *RCTGetBorderImage(RCTBorderStyle borderStyle,
-                           CGSize viewSize,
-                           RCTCornerRadii cornerRadii,
-                           UIEdgeInsets borderInsets,
-                           RCTBorderColors borderColors,
-                           CGColorRef backgroundColor,
-                           BOOL drawToEdge,
-                           CGFloat scaleFactor); // TODO(macOS ISS#2323203)
+RCT_EXTERN UIImage *RCTGetBorderImage(RCTBorderStyle borderStyle,
+                                      CGSize viewSize,
+                                      RCTCornerRadii cornerRadii,
+                                      UIEdgeInsets borderInsets,
+                                      RCTBorderColors borderColors,
+                                      CGColorRef backgroundColor,
+                                      BOOL drawToEdge,
+                                      CGFloat scaleFactor); // TODO(macOS ISS#2323203)
diff --git a/React/Views/RCTBorderDrawing.m b/React/Views/RCTBorderDrawing.m
index cf7caa158e7805..c52a25ced24e19 100644
--- a/React/Views/RCTBorderDrawing.m
+++ b/React/Views/RCTBorderDrawing.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -224,13 +224,21 @@ static CGContextRef RCTUIGraphicsBeginImageContext(CGSize size, CGColorRef backg
   (borderInsets.top + cornerInsets.topRight.height +
    borderInsets.bottom + cornerInsets.bottomLeft.height <= viewSize.height);
 
-  const UIEdgeInsets edgeInsets = (UIEdgeInsets){
+  UIEdgeInsets edgeInsets = (UIEdgeInsets){
     borderInsets.top + MAX(cornerInsets.topLeft.height, cornerInsets.topRight.height),
     borderInsets.left + MAX(cornerInsets.topLeft.width, cornerInsets.bottomLeft.width),
     borderInsets.bottom + MAX(cornerInsets.bottomLeft.height, cornerInsets.bottomRight.height),
     borderInsets.right + MAX(cornerInsets.bottomRight.width, cornerInsets.topRight.width)
   };
 
+  // Asymmetrical edgeInsets cause strange artifacting on iOS 10 and earlier.
+  edgeInsets = (UIEdgeInsets){
+    MAX(edgeInsets.top, edgeInsets.bottom),
+    MAX(edgeInsets.left, edgeInsets.right),
+    MAX(edgeInsets.top, edgeInsets.bottom),
+    MAX(edgeInsets.left, edgeInsets.right),
+  };
+
   const CGSize size = makeStretchable ? (CGSize){
     // 1pt for the middle stretchable area along each axis
     edgeInsets.left + 1 + edgeInsets.right,
diff --git a/React/Views/RCTBorderStyle.h b/React/Views/RCTBorderStyle.h
index c3d7acdfbe4cea..2bc79b4e421e80 100644
--- a/React/Views/RCTBorderStyle.h
+++ b/React/Views/RCTBorderStyle.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTComponent.h b/React/Views/RCTComponent.h
index 639c220dca0534..ac54b75cace1cc 100644
--- a/React/Views/RCTComponent.h
+++ b/React/Views/RCTComponent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTComponentData.h b/React/Views/RCTComponentData.h
index bf04eea4fd2c18..7b76f97cf3a07a 100644
--- a/React/Views/RCTComponentData.h
+++ b/React/Views/RCTComponentData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTComponentData.m b/React/Views/RCTComponentData.m
index 79181d1713fd5c..0939d9a671f1d6 100644
--- a/React/Views/RCTComponentData.m
+++ b/React/Views/RCTComponentData.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTConvert+CoreLocation.h b/React/Views/RCTConvert+CoreLocation.h
index bfe61029ebc723..c021bb45e12638 100644
--- a/React/Views/RCTConvert+CoreLocation.h
+++ b/React/Views/RCTConvert+CoreLocation.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTConvert+CoreLocation.m b/React/Views/RCTConvert+CoreLocation.m
index 67607b1520db94..d7afdca79b0780 100644
--- a/React/Views/RCTConvert+CoreLocation.m
+++ b/React/Views/RCTConvert+CoreLocation.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTConvert+Transform.h b/React/Views/RCTConvert+Transform.h
index c07fac3c159970..c5161b4782f8e5 100644
--- a/React/Views/RCTConvert+Transform.h
+++ b/React/Views/RCTConvert+Transform.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTConvert+Transform.m b/React/Views/RCTConvert+Transform.m
index bd5b144905206d..f6c7d0091c7de2 100644
--- a/React/Views/RCTConvert+Transform.m
+++ b/React/Views/RCTConvert+Transform.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTDatePicker.h b/React/Views/RCTDatePicker.h
index f78652cdcb864c..ae4e177068d475 100644
--- a/React/Views/RCTDatePicker.h
+++ b/React/Views/RCTDatePicker.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTDatePicker.m b/React/Views/RCTDatePicker.m
index 3b0d609a579d28..46f7f2af14383a 100644
--- a/React/Views/RCTDatePicker.m
+++ b/React/Views/RCTDatePicker.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTDatePickerManager.h b/React/Views/RCTDatePickerManager.h
index 9a4c4f8cefa4b7..dc8ba2dec7c213 100644
--- a/React/Views/RCTDatePickerManager.h
+++ b/React/Views/RCTDatePickerManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTDatePickerManager.m b/React/Views/RCTDatePickerManager.m
index 3cbb1da7b501fa..34f7a53b4405e0 100644
--- a/React/Views/RCTDatePickerManager.m
+++ b/React/Views/RCTDatePickerManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTFont.h b/React/Views/RCTFont.h
index ee952ec3dbd45d..7e0bec0c91fe79 100644
--- a/React/Views/RCTFont.h
+++ b/React/Views/RCTFont.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTFont.mm b/React/Views/RCTFont.mm
index a0b4f665813e45..a1a6720b6355ff 100644
--- a/React/Views/RCTFont.mm
+++ b/React/Views/RCTFont.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTLayout.h b/React/Views/RCTLayout.h
index c45747e472d6a5..d4d2217c18d87b 100644
--- a/React/Views/RCTLayout.h
+++ b/React/Views/RCTLayout.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTLayout.m b/React/Views/RCTLayout.m
index 8b0f6a2b6e75af..321199f8f47f1c 100644
--- a/React/Views/RCTLayout.m
+++ b/React/Views/RCTLayout.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTMaskedView.h b/React/Views/RCTMaskedView.h
index 2406d6ce8ab541..e6992651081a9d 100644
--- a/React/Views/RCTMaskedView.h
+++ b/React/Views/RCTMaskedView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTMaskedView.m b/React/Views/RCTMaskedView.m
index 5a1a4218127df7..e9411c29ad1497 100644
--- a/React/Views/RCTMaskedView.m
+++ b/React/Views/RCTMaskedView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTMaskedViewManager.h b/React/Views/RCTMaskedViewManager.h
index 42e03124363886..09adc28829744d 100644
--- a/React/Views/RCTMaskedViewManager.h
+++ b/React/Views/RCTMaskedViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTMaskedViewManager.m b/React/Views/RCTMaskedViewManager.m
index d6bd575948ab29..651b25bd63861e 100644
--- a/React/Views/RCTMaskedViewManager.m
+++ b/React/Views/RCTMaskedViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostView.h b/React/Views/RCTModalHostView.h
index 08506545acd983..e421e597f806dd 100644
--- a/React/Views/RCTModalHostView.h
+++ b/React/Views/RCTModalHostView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostView.m b/React/Views/RCTModalHostView.m
index 102ccde8fd98b7..f586e4ad0eadb5 100644
--- a/React/Views/RCTModalHostView.m
+++ b/React/Views/RCTModalHostView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostViewController.h b/React/Views/RCTModalHostViewController.h
index f7b27351214721..c5af5ffca6ac0d 100644
--- a/React/Views/RCTModalHostViewController.h
+++ b/React/Views/RCTModalHostViewController.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostViewController.m b/React/Views/RCTModalHostViewController.m
index 4b5c5281dce7ee..abd5369dce7afe 100644
--- a/React/Views/RCTModalHostViewController.m
+++ b/React/Views/RCTModalHostViewController.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostViewManager.h b/React/Views/RCTModalHostViewManager.h
index b325a9c6604d38..f42cecc27dfc06 100644
--- a/React/Views/RCTModalHostViewManager.h
+++ b/React/Views/RCTModalHostViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalHostViewManager.m b/React/Views/RCTModalHostViewManager.m
index bb235dc625b755..6377683d2dc748 100644
--- a/React/Views/RCTModalHostViewManager.m
+++ b/React/Views/RCTModalHostViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalManager.h b/React/Views/RCTModalManager.h
index 62c1743d7fb2e5..8ce1a29d7f52d3 100644
--- a/React/Views/RCTModalManager.h
+++ b/React/Views/RCTModalManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTModalManager.m b/React/Views/RCTModalManager.m
index 0920ad66528e4a..5303866d1b17c3 100644
--- a/React/Views/RCTModalManager.m
+++ b/React/Views/RCTModalManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTNavItem.h b/React/Views/RCTNavItem.h
deleted file mode 100644
index 9cabdf2e600a6a..00000000000000
--- a/React/Views/RCTNavItem.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import <UIKit/UIKit.h>
-
-#import <React/RCTComponent.h>
-
-@interface RCTNavItem : UIView
-
-@property (nonatomic, copy) NSString *title;
-@property (nonatomic, strong) UIImage *titleImage;
-@property (nonatomic, strong) UIImage *leftButtonIcon;
-@property (nonatomic, copy) NSString *leftButtonTitle;
-@property (nonatomic, assign) UIBarButtonSystemItem leftButtonSystemIcon;
-@property (nonatomic, strong) UIImage *rightButtonIcon;
-@property (nonatomic, copy) NSString *rightButtonTitle;
-@property (nonatomic, assign) UIBarButtonSystemItem rightButtonSystemIcon;
-@property (nonatomic, strong) UIImage *backButtonIcon;
-@property (nonatomic, copy) NSString *backButtonTitle;
-@property (nonatomic, assign) BOOL navigationBarHidden;
-@property (nonatomic, assign) BOOL shadowHidden;
-@property (nonatomic, strong) UIColor *tintColor;
-@property (nonatomic, strong) UIColor *barTintColor;
-@property (nonatomic, strong) UIColor *titleTextColor;
-@property (nonatomic, assign) BOOL translucent;
-#if !TARGET_OS_TV
-@property (nonatomic, assign) UIBarStyle barStyle;
-#endif
-
-@property (nonatomic, readonly) UIImageView *titleImageView;
-@property (nonatomic, readonly) UIBarButtonItem *backButtonItem;
-@property (nonatomic, readonly) UIBarButtonItem *leftButtonItem;
-@property (nonatomic, readonly) UIBarButtonItem *rightButtonItem;
-
-@property (nonatomic, copy) RCTBubblingEventBlock onLeftButtonPress;
-@property (nonatomic, copy) RCTBubblingEventBlock onRightButtonPress;
-
-@end
diff --git a/React/Views/RCTNavItem.m b/React/Views/RCTNavItem.m
deleted file mode 100644
index 58923e2450a917..00000000000000
--- a/React/Views/RCTNavItem.m
+++ /dev/null
@@ -1,174 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import "RCTNavItem.h"
-
-@implementation RCTNavItem
-
-@synthesize backButtonItem = _backButtonItem;
-@synthesize leftButtonItem = _leftButtonItem;
-@synthesize rightButtonItem = _rightButtonItem;
-
-- (UIImageView *)titleImageView
-{
-  if (_titleImage) {
-    return [[UIImageView alloc] initWithImage:_titleImage];
-  } else {
-    return nil;
-  }
-}
-
--(instancetype)init
-{
-  if (self = [super init]) {
-    _leftButtonSystemIcon = NSNotFound;
-    _rightButtonSystemIcon = NSNotFound;
-  }
-  return self;
-}
-
-- (void)setBackButtonTitle:(NSString *)backButtonTitle
-{
-  _backButtonTitle = backButtonTitle;
-  _backButtonItem = nil;
-}
-
-- (void)setBackButtonIcon:(UIImage *)backButtonIcon
-{
-  _backButtonIcon = backButtonIcon;
-  _backButtonItem = nil;
-}
-
-- (UIBarButtonItem *)backButtonItem
-{
-  if (!_backButtonItem) {
-    if (_backButtonIcon) {
-      _backButtonItem = [[UIBarButtonItem alloc] initWithImage:_backButtonIcon
-                                                         style:UIBarButtonItemStylePlain
-                                                        target:nil
-                                                        action:nil];
-    } else if (_backButtonTitle.length) {
-      _backButtonItem = [[UIBarButtonItem alloc] initWithTitle:_backButtonTitle
-                                                         style:UIBarButtonItemStylePlain
-                                                        target:nil
-                                                        action:nil];
-    } else {
-      _backButtonItem = nil;
-    }
-  }
-  return _backButtonItem;
-}
-
-- (void)setLeftButtonTitle:(NSString *)leftButtonTitle
-{
-  _leftButtonTitle = leftButtonTitle;
-  _leftButtonItem = nil;
-}
-
-- (void)setLeftButtonIcon:(UIImage *)leftButtonIcon
-{
-  _leftButtonIcon = leftButtonIcon;
-  _leftButtonItem = nil;
-}
-
-- (void)setLeftButtonSystemIcon:(UIBarButtonSystemItem)leftButtonSystemIcon
-{
-  _leftButtonSystemIcon = leftButtonSystemIcon;
-  _leftButtonItem = nil;
-}
-
-- (UIBarButtonItem *)leftButtonItem
-{
-  if (!_leftButtonItem) {
-    if (_leftButtonIcon) {
-      _leftButtonItem =
-      [[UIBarButtonItem alloc] initWithImage:_leftButtonIcon
-                                       style:UIBarButtonItemStylePlain
-                                      target:self
-                                      action:@selector(handleLeftButtonPress)];
-
-    } else if (_leftButtonTitle.length) {
-      _leftButtonItem =
-      [[UIBarButtonItem alloc] initWithTitle:_leftButtonTitle
-                                       style:UIBarButtonItemStylePlain
-                                      target:self
-                                      action:@selector(handleLeftButtonPress)];
-
-    } else if (_leftButtonSystemIcon != NSNotFound) {
-      _leftButtonItem =
-      [[UIBarButtonItem alloc] initWithBarButtonSystemItem:_leftButtonSystemIcon
-                                                    target:self
-                                                    action:@selector(handleLeftButtonPress)];
-    } else {
-      _leftButtonItem = nil;
-    }
-  }
-  return _leftButtonItem;
-}
-
-- (void)handleLeftButtonPress
-{
-  if (_onLeftButtonPress) {
-    _onLeftButtonPress(nil);
-  }
-}
-
-- (void)setRightButtonTitle:(NSString *)rightButtonTitle
-{
-  _rightButtonTitle = rightButtonTitle;
-  _rightButtonItem = nil;
-}
-
-- (void)setRightButtonIcon:(UIImage *)rightButtonIcon
-{
-  _rightButtonIcon = rightButtonIcon;
-  _rightButtonItem = nil;
-}
-
-- (void)setRightButtonSystemIcon:(UIBarButtonSystemItem)rightButtonSystemIcon
-{
-  _rightButtonSystemIcon = rightButtonSystemIcon;
-  _rightButtonItem = nil;
-}
-
-- (UIBarButtonItem *)rightButtonItem
-{
-  if (!_rightButtonItem) {
-    if (_rightButtonIcon) {
-      _rightButtonItem =
-      [[UIBarButtonItem alloc] initWithImage:_rightButtonIcon
-                                       style:UIBarButtonItemStylePlain
-                                      target:self
-                                      action:@selector(handleRightButtonPress)];
-
-    } else if (_rightButtonTitle.length) {
-      _rightButtonItem =
-      [[UIBarButtonItem alloc] initWithTitle:_rightButtonTitle
-                                       style:UIBarButtonItemStylePlain
-                                      target:self
-                                      action:@selector(handleRightButtonPress)];
-
-    } else if (_rightButtonSystemIcon != NSNotFound) {
-      _rightButtonItem =
-      [[UIBarButtonItem alloc] initWithBarButtonSystemItem:_rightButtonSystemIcon
-                                      target:self
-                                      action:@selector(handleRightButtonPress)];
-    } else {
-      _rightButtonItem = nil;
-    }
-  }
-  return _rightButtonItem;
-}
-
-- (void)handleRightButtonPress
-{
-  if (_onRightButtonPress) {
-    _onRightButtonPress(nil);
-  }
-}
-
-@end
diff --git a/React/Views/RCTNavItemManager.h b/React/Views/RCTNavItemManager.h
deleted file mode 100644
index 8fcb61c3690457..00000000000000
--- a/React/Views/RCTNavItemManager.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import <React/RCTConvert.h>
-#import <React/RCTViewManager.h>
-
-@interface RCTConvert (BarButtonSystemItem)
-
-+ (UIBarButtonSystemItem)UIBarButtonSystemItem:(id)json;
-
-@end
-
-@interface RCTNavItemManager : RCTViewManager
-
-@end
diff --git a/React/Views/RCTNavItemManager.m b/React/Views/RCTNavItemManager.m
deleted file mode 100644
index d9d349c5ad531c..00000000000000
--- a/React/Views/RCTNavItemManager.m
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import "RCTNavItemManager.h"
-
-#import "RCTConvert.h"
-#import "RCTNavItem.h"
-
-@implementation RCTConvert (BarButtonSystemItem)
-
-RCT_ENUM_CONVERTER(UIBarButtonSystemItem, (@{
-  @"done": @(UIBarButtonSystemItemDone),
-  @"cancel": @(UIBarButtonSystemItemCancel),
-  @"edit": @(UIBarButtonSystemItemEdit),
-  @"save": @(UIBarButtonSystemItemSave),
-  @"add": @(UIBarButtonSystemItemAdd),
-  @"flexible-space": @(UIBarButtonSystemItemFlexibleSpace),
-  @"fixed-space": @(UIBarButtonSystemItemFixedSpace),
-  @"compose": @(UIBarButtonSystemItemCompose),
-  @"reply": @(UIBarButtonSystemItemReply),
-  @"action": @(UIBarButtonSystemItemAction),
-  @"organize": @(UIBarButtonSystemItemOrganize),
-  @"bookmarks": @(UIBarButtonSystemItemBookmarks),
-  @"search": @(UIBarButtonSystemItemSearch),
-  @"refresh": @(UIBarButtonSystemItemRefresh),
-  @"stop": @(UIBarButtonSystemItemStop),
-  @"camera": @(UIBarButtonSystemItemCamera),
-  @"trash": @(UIBarButtonSystemItemTrash),
-  @"play": @(UIBarButtonSystemItemPlay),
-  @"pause": @(UIBarButtonSystemItemPause),
-  @"rewind": @(UIBarButtonSystemItemRewind),
-  @"fast-forward": @(UIBarButtonSystemItemFastForward),
-  @"undo": @(UIBarButtonSystemItemUndo),
-  @"redo": @(UIBarButtonSystemItemRedo),
-  @"page-curl": @(UIBarButtonSystemItemPageCurl)
-}), NSNotFound, integerValue);
-
-@end
-
-@implementation RCTNavItemManager
-
-RCT_EXPORT_MODULE()
-
-- (UIView *)view
-{
-  return [RCTNavItem new];
-}
-
-RCT_EXPORT_VIEW_PROPERTY(navigationBarHidden, BOOL)
-RCT_EXPORT_VIEW_PROPERTY(shadowHidden, BOOL)
-RCT_EXPORT_VIEW_PROPERTY(tintColor, UIColor)
-RCT_EXPORT_VIEW_PROPERTY(barTintColor, UIColor)
-#if !TARGET_OS_TV
-RCT_EXPORT_VIEW_PROPERTY(barStyle, UIBarStyle)
-#endif
-RCT_EXPORT_VIEW_PROPERTY(translucent, BOOL)
-
-RCT_EXPORT_VIEW_PROPERTY(title, NSString)
-RCT_EXPORT_VIEW_PROPERTY(titleTextColor, UIColor)
-RCT_EXPORT_VIEW_PROPERTY(titleImage, UIImage)
-
-RCT_EXPORT_VIEW_PROPERTY(backButtonIcon, UIImage)
-RCT_EXPORT_VIEW_PROPERTY(backButtonTitle, NSString)
-
-RCT_EXPORT_VIEW_PROPERTY(leftButtonTitle, NSString)
-RCT_EXPORT_VIEW_PROPERTY(leftButtonIcon, UIImage)
-RCT_EXPORT_VIEW_PROPERTY(leftButtonSystemIcon, UIBarButtonSystemItem)
-
-RCT_EXPORT_VIEW_PROPERTY(rightButtonIcon, UIImage)
-RCT_EXPORT_VIEW_PROPERTY(rightButtonTitle, NSString)
-RCT_EXPORT_VIEW_PROPERTY(rightButtonSystemIcon, UIBarButtonSystemItem)
-
-RCT_EXPORT_VIEW_PROPERTY(onLeftButtonPress, RCTBubblingEventBlock)
-RCT_EXPORT_VIEW_PROPERTY(onRightButtonPress, RCTBubblingEventBlock)
-
-@end
diff --git a/React/Views/RCTNavigator.h b/React/Views/RCTNavigator.h
deleted file mode 100644
index b8ad30141c872d..00000000000000
--- a/React/Views/RCTNavigator.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import <UIKit/UIKit.h>
-
-#import <React/RCTFrameUpdate.h>
-
-@class RCTBridge;
-
-@interface RCTNavigator : UIView <RCTFrameUpdateObserver>
-
-@property (nonatomic, strong) UIView *reactNavSuperviewLink;
-@property (nonatomic, assign) NSInteger requestedTopOfStack;
-@property (nonatomic, assign) BOOL interactivePopGestureEnabled;
-
-- (instancetype)initWithBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
-
-/**
- * Schedules a JavaScript navigation and prevents `UIKit` from navigating until
- * JavaScript has sent its scheduled navigation.
- *
- * @returns Whether or not a JavaScript driven navigation could be
- * scheduled/reserved. If returning `NO`, JavaScript should usually just do
- * nothing at all.
- */
-- (BOOL)requestSchedulingJavaScriptNavigation;
-
-- (void)uiManagerDidPerformMounting;
-
-@end
diff --git a/React/Views/RCTNavigatorManager.m b/React/Views/RCTNavigatorManager.m
deleted file mode 100644
index 99a03cbb364439..00000000000000
--- a/React/Views/RCTNavigatorManager.m
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#import "RCTNavigatorManager.h"
-
-#import "RCTBridge.h"
-#import "RCTConvert.h"
-#import "RCTNavigator.h"
-#import "RCTUIManager.h"
-#import "RCTUIManagerObserverCoordinator.h"
-#import "UIView+React.h"
-
-@interface RCTNavigatorManager () <RCTUIManagerObserver>
-
-@end
-
-@implementation RCTNavigatorManager
-{
-  // The main thread only.
-  NSHashTable<RCTNavigator *> *_viewRegistry;
-}
-
-- (void)setBridge:(RCTBridge *)bridge
-{
-  [super setBridge:bridge];
-
-  [self.bridge.uiManager.observerCoordinator addObserver:self];
-}
-
-- (void)invalidate
-{
-  [self.bridge.uiManager.observerCoordinator removeObserver:self];
-}
-
-RCT_EXPORT_MODULE()
-
-- (UIView *)view
-{
-  if (!_viewRegistry) {
-    _viewRegistry = [NSHashTable hashTableWithOptions:NSPointerFunctionsWeakMemory];
-  }
-
-  RCTNavigator *view = [[RCTNavigator alloc] initWithBridge:self.bridge];
-  [_viewRegistry addObject:view];
-  return view;
-}
-
-RCT_EXPORT_VIEW_PROPERTY(requestedTopOfStack, NSInteger)
-RCT_EXPORT_VIEW_PROPERTY(onNavigationProgress, RCTDirectEventBlock)
-RCT_EXPORT_VIEW_PROPERTY(onNavigationComplete, RCTBubblingEventBlock)
-RCT_EXPORT_VIEW_PROPERTY(interactivePopGestureEnabled, BOOL)
-
-RCT_EXPORT_METHOD(requestSchedulingJavaScriptNavigation:(nonnull NSNumber *)reactTag
-                  callback:(RCTResponseSenderBlock)callback)
-{
-  [self.bridge.uiManager addUIBlock:
-   ^(__unused RCTUIManager *uiManager, NSDictionary<NSNumber *, RCTNavigator *> *viewRegistry){
-    RCTNavigator *navigator = viewRegistry[reactTag];
-    if ([navigator isKindOfClass:[RCTNavigator class]]) {
-      BOOL wasAcquired = [navigator requestSchedulingJavaScriptNavigation];
-      callback(@[@(wasAcquired)]);
-    } else {
-      RCTLogError(@"Cannot set lock: %@ (tag #%@) is not an RCTNavigator", navigator, reactTag);
-    }
-  }];
-}
-
-#pragma mark - RCTUIManagerObserver
-
-- (void)uiManagerDidPerformMounting:(__unused RCTUIManager *)manager
-{
-  RCTExecuteOnMainQueue(^{
-    for (RCTNavigator *view in self->_viewRegistry) {
-      [view uiManagerDidPerformMounting];
-    }
-  });
-}
-
-@end
diff --git a/React/Views/RCTPicker.h b/React/Views/RCTPicker.h
index 59cc974c04fd1f..0b85556a8c0d33 100644
--- a/React/Views/RCTPicker.h
+++ b/React/Views/RCTPicker.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTPicker.m b/React/Views/RCTPicker.m
index ea3494dd1b7f30..f18ee823132d33 100644
--- a/React/Views/RCTPicker.m
+++ b/React/Views/RCTPicker.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTPickerManager.h b/React/Views/RCTPickerManager.h
index a24de5c6eb56df..79de2ee4a73cc8 100644
--- a/React/Views/RCTPickerManager.h
+++ b/React/Views/RCTPickerManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTPickerManager.m b/React/Views/RCTPickerManager.m
index a5f3c27330bd47..226b48380f30c4 100644
--- a/React/Views/RCTPickerManager.m
+++ b/React/Views/RCTPickerManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTPointerEvents.h b/React/Views/RCTPointerEvents.h
index b8a34fcf79e0c8..86dda22d75df5a 100644
--- a/React/Views/RCTPointerEvents.h
+++ b/React/Views/RCTPointerEvents.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTProgressViewManager.h b/React/Views/RCTProgressViewManager.h
index 6528d8ea861ca8..67a4f0df9e9909 100644
--- a/React/Views/RCTProgressViewManager.h
+++ b/React/Views/RCTProgressViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTProgressViewManager.m b/React/Views/RCTProgressViewManager.m
index 6fcf761f7e3e65..13aaf10da59a21 100644
--- a/React/Views/RCTProgressViewManager.m
+++ b/React/Views/RCTProgressViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRefreshControl.h b/React/Views/RCTRefreshControl.h
index 0218d13d217975..64fda72c064fa0 100644
--- a/React/Views/RCTRefreshControl.h
+++ b/React/Views/RCTRefreshControl.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRefreshControl.m b/React/Views/RCTRefreshControl.m
index 6bce70938592e7..b26bb03371ed56 100644
--- a/React/Views/RCTRefreshControl.m
+++ b/React/Views/RCTRefreshControl.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRefreshControlManager.h b/React/Views/RCTRefreshControlManager.h
index ca9fec0739bc69..9d26851104179c 100644
--- a/React/Views/RCTRefreshControlManager.h
+++ b/React/Views/RCTRefreshControlManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRefreshControlManager.m b/React/Views/RCTRefreshControlManager.m
index 355d35073ae37d..5bfef4af842b42 100644
--- a/React/Views/RCTRefreshControlManager.m
+++ b/React/Views/RCTRefreshControlManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRootShadowView.h b/React/Views/RCTRootShadowView.h
index 38a65d0fb87a90..775274fd253833 100644
--- a/React/Views/RCTRootShadowView.h
+++ b/React/Views/RCTRootShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTRootShadowView.m b/React/Views/RCTRootShadowView.m
index a1353a4ed0a00f..3e7ed812c80979 100644
--- a/React/Views/RCTRootShadowView.m
+++ b/React/Views/RCTRootShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSegmentedControl.h b/React/Views/RCTSegmentedControl.h
index 607d21c99eadc4..5aea07e8eab62e 100644
--- a/React/Views/RCTSegmentedControl.h
+++ b/React/Views/RCTSegmentedControl.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSegmentedControl.m b/React/Views/RCTSegmentedControl.m
index 3a9884a474c324..2f97c154d910f9 100644
--- a/React/Views/RCTSegmentedControl.m
+++ b/React/Views/RCTSegmentedControl.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSegmentedControlManager.h b/React/Views/RCTSegmentedControlManager.h
index ad642a6dbf011f..42cbd8025d0c61 100644
--- a/React/Views/RCTSegmentedControlManager.h
+++ b/React/Views/RCTSegmentedControlManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSegmentedControlManager.m b/React/Views/RCTSegmentedControlManager.m
index 3ffc40162e9dcb..d496ebf704c573 100644
--- a/React/Views/RCTSegmentedControlManager.m
+++ b/React/Views/RCTSegmentedControlManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView+Internal.h b/React/Views/RCTShadowView+Internal.h
index c1b9b63ff6671c..a9bce7cc9de63e 100644
--- a/React/Views/RCTShadowView+Internal.h
+++ b/React/Views/RCTShadowView+Internal.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView+Internal.m b/React/Views/RCTShadowView+Internal.m
index 2a10f2d623e3f2..0f482817244765 100644
--- a/React/Views/RCTShadowView+Internal.m
+++ b/React/Views/RCTShadowView+Internal.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView+Layout.h b/React/Views/RCTShadowView+Layout.h
index d8eff1583366c5..88eac5e230d83f 100644
--- a/React/Views/RCTShadowView+Layout.h
+++ b/React/Views/RCTShadowView+Layout.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView+Layout.m b/React/Views/RCTShadowView+Layout.m
index af2987c1fa1ee1..a4c39f208b7c8b 100644
--- a/React/Views/RCTShadowView+Layout.m
+++ b/React/Views/RCTShadowView+Layout.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView.h b/React/Views/RCTShadowView.h
index 2af3f8d493e634..3e8281437e2f2e 100644
--- a/React/Views/RCTShadowView.h
+++ b/React/Views/RCTShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTShadowView.m b/React/Views/RCTShadowView.m
index 930096e85f6131..ef74f28802035e 100644
--- a/React/Views/RCTShadowView.m
+++ b/React/Views/RCTShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSlider.h b/React/Views/RCTSlider.h
index f2cc064aa8a727..70f997e432639a 100644
--- a/React/Views/RCTSlider.h
+++ b/React/Views/RCTSlider.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSlider.m b/React/Views/RCTSlider.m
index d948ed49e1c5b3..93b1fc9e7b0e13 100644
--- a/React/Views/RCTSlider.m
+++ b/React/Views/RCTSlider.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSliderManager.h b/React/Views/RCTSliderManager.h
index a500a16963d80d..ffdf5209ff8541 100644
--- a/React/Views/RCTSliderManager.h
+++ b/React/Views/RCTSliderManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSliderManager.m b/React/Views/RCTSliderManager.m
index be083b45e2d166..d4230b05171285 100644
--- a/React/Views/RCTSliderManager.m
+++ b/React/Views/RCTSliderManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSwitch.h b/React/Views/RCTSwitch.h
index 06ee879d1ce613..304823d65c9b1e 100644
--- a/React/Views/RCTSwitch.h
+++ b/React/Views/RCTSwitch.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSwitch.m b/React/Views/RCTSwitch.m
index 268f0103ed6c3c..e79e983ff17e8c 100644
--- a/React/Views/RCTSwitch.m
+++ b/React/Views/RCTSwitch.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSwitchManager.h b/React/Views/RCTSwitchManager.h
index b37b1ee86a8e29..57242079c6f5b6 100644
--- a/React/Views/RCTSwitchManager.h
+++ b/React/Views/RCTSwitchManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTSwitchManager.m b/React/Views/RCTSwitchManager.m
index f61586e6a45133..e6eea492e9a86a 100644
--- a/React/Views/RCTSwitchManager.m
+++ b/React/Views/RCTSwitchManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTVView.h b/React/Views/RCTTVView.h
index 4f8b2f79c62b9f..8329b085065a7f 100644
--- a/React/Views/RCTTVView.h
+++ b/React/Views/RCTTVView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTVView.m b/React/Views/RCTTVView.m
index 4351978629a807..427fcde0eea059 100644
--- a/React/Views/RCTTVView.m
+++ b/React/Views/RCTTVView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBar.h b/React/Views/RCTTabBar.h
index 249aa9baaba073..a2a7e62eb8af49 100644
--- a/React/Views/RCTTabBar.h
+++ b/React/Views/RCTTabBar.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBar.m b/React/Views/RCTTabBar.m
index 4569af480c86bf..e064115cba01b1 100644
--- a/React/Views/RCTTabBar.m
+++ b/React/Views/RCTTabBar.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarItem.h b/React/Views/RCTTabBarItem.h
index 25e36de62da252..431108066a3913 100644
--- a/React/Views/RCTTabBarItem.h
+++ b/React/Views/RCTTabBarItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarItem.m b/React/Views/RCTTabBarItem.m
index 239070c449815d..7019d80a4695b0 100644
--- a/React/Views/RCTTabBarItem.m
+++ b/React/Views/RCTTabBarItem.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarItemManager.h b/React/Views/RCTTabBarItemManager.h
index fd72e35b123d0a..d738ecb6baad81 100644
--- a/React/Views/RCTTabBarItemManager.h
+++ b/React/Views/RCTTabBarItemManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarItemManager.m b/React/Views/RCTTabBarItemManager.m
index b51952b4e073cb..130aef44cc7043 100644
--- a/React/Views/RCTTabBarItemManager.m
+++ b/React/Views/RCTTabBarItemManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarManager.h b/React/Views/RCTTabBarManager.h
index b41f52b89a2854..7e0b49d3435821 100644
--- a/React/Views/RCTTabBarManager.h
+++ b/React/Views/RCTTabBarManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTabBarManager.m b/React/Views/RCTTabBarManager.m
index 6813ffb5d436c7..0f9d3b3439808e 100644
--- a/React/Views/RCTTabBarManager.m
+++ b/React/Views/RCTTabBarManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTTextDecorationLineType.h b/React/Views/RCTTextDecorationLineType.h
index 21152baea4fb49..968333fa588b78 100644
--- a/React/Views/RCTTextDecorationLineType.h
+++ b/React/Views/RCTTextDecorationLineType.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTView.h b/React/Views/RCTView.h
index 8bb79cadc98dc6..1e0a4a8b42cea5 100644
--- a/React/Views/RCTView.h
+++ b/React/Views/RCTView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTView.m b/React/Views/RCTView.m
index 4cf01945553dbb..328a8a854bf258 100644
--- a/React/Views/RCTView.m
+++ b/React/Views/RCTView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -813,8 +813,8 @@ - (void)displayLayer:(CALayer *)layer
     CGRectMake(
       insets.left / size.width,
       insets.top / size.height,
-      1.0 / size.width,
-      1.0 / size.height
+      (CGFloat)1.0 / size.width,
+      (CGFloat)1.0 / size.height
     );
   });
 
diff --git a/React/Views/RCTViewManager.h b/React/Views/RCTViewManager.h
index 281d0aee379a67..8d2d2db77849ad 100644
--- a/React/Views/RCTViewManager.h
+++ b/React/Views/RCTViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTViewManager.m b/React/Views/RCTViewManager.m
index 9e7c38e0f3d81a..d4ab53f5458d9c 100644
--- a/React/Views/RCTViewManager.m
+++ b/React/Views/RCTViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -190,7 +190,13 @@ - (RCTShadowView *)shadowView
 RCT_CUSTOM_VIEW_PROPERTY(accessibilityRole, UIAccessibilityTraits, RCTView)
 {
 #if !TARGET_OS_OSX
-  view.reactAccessibilityElement.accessibilityTraits |= json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
+  // This mask must be kept in sync with the AccessibilityRoles enum defined in ViewAccessibility.js and DeprecatedViewAccessibility.js
+  const UIAccessibilityTraits AccessibilityRolesMask = UIAccessibilityTraitNone | UIAccessibilityTraitButton | UIAccessibilityTraitLink | UIAccessibilityTraitSearchField | UIAccessibilityTraitImage | UIAccessibilityTraitKeyboardKey | UIAccessibilityTraitStaticText | UIAccessibilityTraitAdjustable | UIAccessibilityTraitHeader | UIAccessibilityTraitSummaryElement;
+
+  UIAccessibilityTraits newTraits = json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
+  UIAccessibilityTraits maskedTraits = newTraits & AccessibilityRolesMask;
+
+  view.reactAccessibilityElement.accessibilityTraits = (view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityRolesMask) | maskedTraits;
 #else
   if (json) {
     view.reactAccessibilityElement.accessibilityRole = [RCTConvert accessibilityRoleFromTraits:json];
@@ -203,7 +209,12 @@ - (RCTShadowView *)shadowView
 RCT_CUSTOM_VIEW_PROPERTY(accessibilityStates, UIAccessibilityTraits, RCTView)
 {
 #if !TARGET_OS_OSX
-    view.reactAccessibilityElement.accessibilityTraits |= json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
+  // This mask must be kept in sync with the AccessibilityStates enum defined in ViewAccessibility.js and DeprecatedViewAccessibility.js
+  const UIAccessibilityTraits AccessibilityStatesMask = UIAccessibilityTraitNotEnabled | UIAccessibilityTraitSelected;
+
+  UIAccessibilityTraits newTraits = json ? [RCTConvert UIAccessibilityTraits:json] : defaultView.accessibilityTraits;
+  UIAccessibilityTraits maskedTraits = newTraits & AccessibilityStatesMask;
+  view.reactAccessibilityElement.accessibilityTraits = (view.reactAccessibilityElement.accessibilityTraits & ~AccessibilityStatesMask) | maskedTraits;
 #else
 #endif
 }
diff --git a/React/Views/RCTWKWebView.h b/React/Views/RCTWKWebView.h
index 01b1f5e52aa922..04b6e4e4cc50c1 100644
--- a/React/Views/RCTWKWebView.h
+++ b/React/Views/RCTWKWebView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -36,6 +36,7 @@ shouldStartLoadForRequest:(NSMutableDictionary<NSString *, id> *)request
 @property (nonatomic, assign) UIEdgeInsets contentInset;
 @property (nonatomic, assign) BOOL automaticallyAdjustContentInsets;
 
++ (void)setClientAuthenticationCredential:(nullable NSURLCredential*)credential;
 - (void)postMessage:(NSString *)message;
 - (void)injectJavaScript:(NSString *)script;
 - (void)goForward;
diff --git a/React/Views/RCTWKWebView.m b/React/Views/RCTWKWebView.m
index 16dc43a79a9fac..79f81df5de0ebd 100644
--- a/React/Views/RCTWKWebView.m
+++ b/React/Views/RCTWKWebView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,8 @@
 #import "RCTAutoInsetsProtocol.h"
 
 static NSString *const MessageHanderName = @"ReactNative";
+static NSURLCredential* clientAuthenticationCredential;
+
 
 @interface RCTWKWebView () <WKUIDelegate, WKNavigationDelegate, WKScriptMessageHandler, UIScrollViewDelegate, RCTAutoInsetsProtocol>
 @property (nonatomic, copy) RCTDirectEventBlock onLoadingStart;
@@ -310,6 +312,25 @@ - (void)               webView:(WKWebView *)webView
   [self setBackgroundColor: _savedBackgroundColor];
 }
 
++ (void)setClientAuthenticationCredential:(nullable NSURLCredential*)credential {
+  clientAuthenticationCredential = credential;
+}
+
+- (void)                    webView:(WKWebView *)webView
+  didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
+                  completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable))completionHandler
+{
+  if (!clientAuthenticationCredential) {
+    completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+    return;
+  }
+  if ([[challenge protectionSpace] authenticationMethod] == NSURLAuthenticationMethodClientCertificate) {
+    completionHandler(NSURLSessionAuthChallengeUseCredential, clientAuthenticationCredential);
+  } else {
+    completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+}
+}
+
 - (void)evaluateJS:(NSString *)js
           thenCall: (void (^)(NSString*)) callback
 {
diff --git a/React/Views/RCTWKWebViewManager.h b/React/Views/RCTWKWebViewManager.h
index 81145bea9fb143..cf44faf240cbd0 100644
--- a/React/Views/RCTWKWebViewManager.h
+++ b/React/Views/RCTWKWebViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTNavigatorManager.h b/React/Views/RCTWKWebViewManager.h~HEAD
similarity index 81%
rename from React/Views/RCTNavigatorManager.h
rename to React/Views/RCTWKWebViewManager.h~HEAD
index 58c40c94e7f1f7..81145bea9fb143 100644
--- a/React/Views/RCTNavigatorManager.h
+++ b/React/Views/RCTWKWebViewManager.h~HEAD
@@ -7,6 +7,5 @@
 
 #import <React/RCTViewManager.h>
 
-@interface RCTNavigatorManager : RCTViewManager
-
+@interface RCTWKWebViewManager : RCTViewManager
 @end
diff --git a/React/Views/RCTWKWebViewManager.m b/React/Views/RCTWKWebViewManager.m
index cd56b66b0e29d2..9d329472b965c1 100644
--- a/React/Views/RCTWKWebViewManager.m
+++ b/React/Views/RCTWKWebViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTWebView.h b/React/Views/RCTWebView.h
index eccb5b94c6daa3..4fa9d62d8a831d 100644
--- a/React/Views/RCTWebView.h
+++ b/React/Views/RCTWebView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTWebView.m b/React/Views/RCTWebView.m
index 765374878c997b..88c2d222e02ed5 100644
--- a/React/Views/RCTWebView.m
+++ b/React/Views/RCTWebView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTWebViewManager.h b/React/Views/RCTWebViewManager.h
index 2c83b2f64169fc..d06ea1b806e470 100644
--- a/React/Views/RCTWebViewManager.h
+++ b/React/Views/RCTWebViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTWebViewManager.m b/React/Views/RCTWebViewManager.m
index 3e7d0317b6dd2a..fc39f7cb1382a2 100644
--- a/React/Views/RCTWebViewManager.m
+++ b/React/Views/RCTWebViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/RCTWrapperViewController.h b/React/Views/RCTWrapperViewController.h
index 7baa0c08c533ed..623b37bf15e0a3 100644
--- a/React/Views/RCTWrapperViewController.h
+++ b/React/Views/RCTWrapperViewController.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,22 +7,10 @@
 
 #import <UIKit/UIKit.h>
 
-@class RCTNavItem;
 @class RCTWrapperViewController;
 
-@protocol RCTWrapperViewControllerNavigationListener <NSObject>
-
-- (void)wrapperViewController:(RCTWrapperViewController *)wrapperViewController
-didMoveToNavigationController:(UINavigationController *)navigationController;
-
-@end
-
 @interface RCTWrapperViewController : UIViewController
 
 - (instancetype)initWithContentView:(UIView *)contentView NS_DESIGNATED_INITIALIZER;
-- (instancetype)initWithNavItem:(RCTNavItem *)navItem;
-
-@property (nonatomic, weak) id<RCTWrapperViewControllerNavigationListener> navigationListener;
-@property (nonatomic, strong) RCTNavItem *navItem;
 
 @end
diff --git a/React/Views/RCTWrapperViewController.m b/React/Views/RCTWrapperViewController.m
index 30103019eef4f2..e32425e41e4e55 100644
--- a/React/Views/RCTWrapperViewController.m
+++ b/React/Views/RCTWrapperViewController.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 #import <UIKit/UIScrollView.h>
 
 #import "RCTEventDispatcher.h"
-#import "RCTNavItem.h"
 #import "RCTUtils.h"
 #import "UIView+React.h"
 #import "RCTAutoInsetsProtocol.h"
@@ -38,14 +37,6 @@ - (instancetype)initWithContentView:(UIView *)contentView
   return self;
 }
 
-- (instancetype)initWithNavItem:(RCTNavItem *)navItem
-{
-  if ((self = [self initWithContentView:navItem])) {
-    _navItem = navItem;
-  }
-  return self;
-}
-
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithNibName:(NSString *)nn bundle:(NSBundle *)nb)
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
 
@@ -83,55 +74,6 @@ - (void)viewDidLayoutSubviews
   }
 }
 
-static UIView *RCTFindNavBarShadowViewInView(UIView *view)
-{
-  if ([view isKindOfClass:[UIImageView class]] && view.bounds.size.height <= 1) {
-    return view;
-  }
-  for (UIView *subview in view.subviews) {
-    UIView *shadowView = RCTFindNavBarShadowViewInView(subview);
-    if (shadowView) {
-      return shadowView;
-    }
-  }
-  return nil;
-}
-
-- (void)viewWillAppear:(BOOL)animated
-{
-  [super viewWillAppear:animated];
-
-  // TODO: find a way to make this less-tightly coupled to navigation controller
-  if ([self.parentViewController isKindOfClass:[UINavigationController class]])
-  {
-    [self.navigationController
-     setNavigationBarHidden:_navItem.navigationBarHidden
-     animated:animated];
-
-    UINavigationBar *bar = self.navigationController.navigationBar;
-    bar.barTintColor = _navItem.barTintColor;
-    bar.tintColor = _navItem.tintColor;
-    bar.translucent = _navItem.translucent;
-#if !TARGET_OS_TV
-    bar.barStyle = _navItem.barStyle;
-#endif
-    bar.titleTextAttributes = _navItem.titleTextColor ? @{
-      NSForegroundColorAttributeName: _navItem.titleTextColor
-    } : nil;
-
-    RCTFindNavBarShadowViewInView(bar).hidden = _navItem.shadowHidden;
-
-    UINavigationItem *item = self.navigationItem;
-    item.title = _navItem.title;
-    item.titleView = _navItem.titleImageView;
-#if !TARGET_OS_TV
-    item.backBarButtonItem = _navItem.backButtonItem;
-#endif //TARGET_OS_TV
-    item.leftBarButtonItem = _navItem.leftButtonItem;
-    item.rightBarButtonItem = _navItem.rightButtonItem;
-  }
-}
-
 - (void)loadView
 {
   // Add a wrapper so that the wrapper view managed by the
@@ -142,16 +84,4 @@ - (void)loadView
   self.view = _wrapperView;
 }
 
-- (void)didMoveToParentViewController:(UIViewController *)parent
-{
-  // There's no clear setter for navigation controllers, but did move to parent
-  // view controller provides the desired effect. This is called after a pop
-  // finishes, be it a swipe to go back or a standard tap on the back button
-  [super didMoveToParentViewController:parent];
-  if (parent == nil || [parent isKindOfClass:[UINavigationController class]]) {
-    [self.navigationListener wrapperViewController:self
-                     didMoveToNavigationController:(UINavigationController *)parent];
-  }
-}
-
 @end
diff --git a/React/Views/SafeAreaView/RCTSafeAreaShadowView.h b/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
index 8ce55759f86ec3..bb00017950d24a 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
+++ b/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/SafeAreaView/RCTSafeAreaShadowView.m b/React/Views/SafeAreaView/RCTSafeAreaShadowView.m
index b84687ba796c2f..7334403585e7da 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaShadowView.m
+++ b/React/Views/SafeAreaView/RCTSafeAreaShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/SafeAreaView/RCTSafeAreaView.h b/React/Views/SafeAreaView/RCTSafeAreaView.h
index 1964b0b65f9f6f..9a8c2efc64d5bf 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaView.h
+++ b/React/Views/SafeAreaView/RCTSafeAreaView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -17,6 +17,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
 
+@property (nonatomic, assign) BOOL emulateUnlessSupported;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/React/Views/SafeAreaView/RCTSafeAreaView.m b/React/Views/SafeAreaView/RCTSafeAreaView.m
index e4fe4b6d17146a..7e3c8562e04a5f 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaView.m
+++ b/React/Views/SafeAreaView/RCTSafeAreaView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,6 +21,7 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
 {
   if (self = [super initWithFrame:CGRectZero]) {
     _bridge = bridge;
+    _emulateUnlessSupported = YES; // The default.
   }
 
   return self;
@@ -29,7 +30,45 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)decoder)
 RCT_NOT_IMPLEMENTED(- (instancetype)initWithFrame:(CGRect)frame)
 
+- (BOOL)isSupportedByOS
+{
+  return [self respondsToSelector:@selector(safeAreaInsets)];
+}
+
+- (UIEdgeInsets)safeAreaInsetsIfSupportedAndEnabled
+{
 #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
+  if (self.isSupportedByOS) {
+    return self.safeAreaInsets;
+  }
+#endif
+  return self.emulateUnlessSupported ? self.emulatedSafeAreaInsets : UIEdgeInsetsZero;
+}
+
+- (UIEdgeInsets)emulatedSafeAreaInsets
+{
+  UIViewController* vc = self.reactViewController;
+
+  if (!vc) {
+    return UIEdgeInsetsZero;
+  }
+
+  CGFloat topLayoutOffset = vc.topLayoutGuide.length;
+  CGFloat bottomLayoutOffset = vc.bottomLayoutGuide.length;
+  CGRect safeArea = vc.view.bounds;
+  safeArea.origin.y += topLayoutOffset;
+  safeArea.size.height -= topLayoutOffset + bottomLayoutOffset;
+  CGRect localSafeArea = [vc.view convertRect:safeArea toView:self];
+  UIEdgeInsets safeAreaInsets = UIEdgeInsetsMake(0, 0, 0, 0);
+  if (CGRectGetMinY(localSafeArea) > CGRectGetMinY(self.bounds)) {
+    safeAreaInsets.top = CGRectGetMinY(localSafeArea) - CGRectGetMinY(self.bounds);
+  }
+  if (CGRectGetMaxY(localSafeArea) < CGRectGetMaxY(self.bounds)) {
+    safeAreaInsets.bottom = CGRectGetMaxY(self.bounds) - CGRectGetMaxY(localSafeArea);
+  }
+
+  return safeAreaInsets;
+}
 
 static BOOL UIEdgeInsetsEqualToEdgeInsetsWithThreshold(UIEdgeInsets insets1, UIEdgeInsets insets2, CGFloat threshold) {
   return
@@ -41,23 +80,44 @@ static BOOL UIEdgeInsetsEqualToEdgeInsetsWithThreshold(UIEdgeInsets insets1, UIE
 
 - (void)safeAreaInsetsDidChange
 {
-  if (![self respondsToSelector:@selector(safeAreaInsets)]) {
-    return;
-  }
+  [self invalidateSafeAreaInsets];
+}
+
+- (void)invalidateSafeAreaInsets
+{
+  [self setSafeAreaInsets:self.safeAreaInsetsIfSupportedAndEnabled];
+}
 
-  UIEdgeInsets safeAreaInsets = self.safeAreaInsets;
+- (void)layoutSubviews
+{
+  [super layoutSubviews];
+
+  if (!self.isSupportedByOS && self.emulateUnlessSupported) {
+    [self invalidateSafeAreaInsets];
+  }
+}
 
+- (void)setSafeAreaInsets:(UIEdgeInsets)safeAreaInsets
+{
   if (UIEdgeInsetsEqualToEdgeInsetsWithThreshold(safeAreaInsets, _currentSafeAreaInsets, 1.0 / RCTScreenScale())) {
     return;
   }
 
   _currentSafeAreaInsets = safeAreaInsets;
 
-  RCTSafeAreaViewLocalData *localData =
-    [[RCTSafeAreaViewLocalData alloc] initWithInsets:safeAreaInsets];
+  RCTSafeAreaViewLocalData *localData = [[RCTSafeAreaViewLocalData alloc] initWithInsets:safeAreaInsets];
   [_bridge.uiManager setLocalData:localData forView:self];
 }
 
-#endif
+- (void)setEmulateUnlessSupported:(BOOL)emulateUnlessSupported
+{
+  if (_emulateUnlessSupported == emulateUnlessSupported) {
+    return;
+  }
+
+  _emulateUnlessSupported = emulateUnlessSupported;
+
+  [self invalidateSafeAreaInsets];
+}
 
 @end
diff --git a/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h b/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
index a644890c6abefc..e72c1127be64ad 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
+++ b/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.m b/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.m
index 0c38d89344755a..ca108bf3967d8b 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.m
+++ b/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/SafeAreaView/RCTSafeAreaViewManager.h b/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
index aeaf69a73deba8..5dcfb038438551 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
+++ b/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/SafeAreaView/RCTSafeAreaViewManager.m b/React/Views/SafeAreaView/RCTSafeAreaViewManager.m
index 6bc64562358ccc..6baf0c1b55baba 100644
--- a/React/Views/SafeAreaView/RCTSafeAreaViewManager.m
+++ b/React/Views/SafeAreaView/RCTSafeAreaViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,6 +15,8 @@ @implementation RCTSafeAreaViewManager
 
 RCT_EXPORT_MODULE()
 
+RCT_EXPORT_VIEW_PROPERTY(emulateUnlessSupported, BOOL)
+
 - (UIView *)view
 {
   return [[RCTSafeAreaView alloc] initWithBridge:self.bridge];
diff --git a/React/Views/ScrollView/RCTScrollContentShadowView.h b/React/Views/ScrollView/RCTScrollContentShadowView.h
index aefa89a9bc8342..05db74c470a667 100644
--- a/React/Views/ScrollView/RCTScrollContentShadowView.h
+++ b/React/Views/ScrollView/RCTScrollContentShadowView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollContentShadowView.m b/React/Views/ScrollView/RCTScrollContentShadowView.m
index 3988ee381e7e66..7d4e2f78f81f33 100644
--- a/React/Views/ScrollView/RCTScrollContentShadowView.m
+++ b/React/Views/ScrollView/RCTScrollContentShadowView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollContentView.h b/React/Views/ScrollView/RCTScrollContentView.h
index 92e3fcb2df6203..bffb9ae5a13004 100644
--- a/React/Views/ScrollView/RCTScrollContentView.h
+++ b/React/Views/ScrollView/RCTScrollContentView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollContentView.m b/React/Views/ScrollView/RCTScrollContentView.m
index a10ddfe3ba175c..1177ea8a4b485d 100644
--- a/React/Views/ScrollView/RCTScrollContentView.m
+++ b/React/Views/ScrollView/RCTScrollContentView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollContentViewManager.h b/React/Views/ScrollView/RCTScrollContentViewManager.h
index bf5c250a5fb0da..21db0a1ef826cb 100644
--- a/React/Views/ScrollView/RCTScrollContentViewManager.h
+++ b/React/Views/ScrollView/RCTScrollContentViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollContentViewManager.m b/React/Views/ScrollView/RCTScrollContentViewManager.m
index 732f976556f610..2f345a8c390a2a 100644
--- a/React/Views/ScrollView/RCTScrollContentViewManager.m
+++ b/React/Views/ScrollView/RCTScrollContentViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollView.h b/React/Views/ScrollView/RCTScrollView.h
index eb77cd2f853f6c..17450b347b53ef 100644
--- a/React/Views/ScrollView/RCTScrollView.h
+++ b/React/Views/ScrollView/RCTScrollView.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -51,6 +51,8 @@
 @property (nonatomic, copy) NSDictionary *maintainVisibleContentPosition;
 @property (nonatomic, assign) int snapToInterval;
 @property (nonatomic, copy) NSArray<NSNumber *> *snapToOffsets;
+@property (nonatomic, assign) BOOL snapToStart;
+@property (nonatomic, assign) BOOL snapToEnd;
 @property (nonatomic, copy) NSString *snapToAlignment;
 
 // NOTE: currently these event props are only declared so we can export the
@@ -58,6 +60,7 @@
 // need to be coalesced before sending, for performance reasons.
 @property (nonatomic, copy) RCTDirectEventBlock onScrollBeginDrag;
 @property (nonatomic, copy) RCTDirectEventBlock onScroll;
+@property (nonatomic, copy) RCTDirectEventBlock onScrollToTop;
 @property (nonatomic, copy) RCTDirectEventBlock onScrollEndDrag;
 @property (nonatomic, copy) RCTDirectEventBlock onMomentumScrollBegin;
 @property (nonatomic, copy) RCTDirectEventBlock onMomentumScrollEnd;
diff --git a/React/Views/ScrollView/RCTScrollView.m b/React/Views/ScrollView/RCTScrollView.m
index 1e0d9f166bd8d3..99209d6a4f2e1d 100644
--- a/React/Views/ScrollView/RCTScrollView.m
+++ b/React/Views/ScrollView/RCTScrollView.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -362,7 +362,9 @@ - (void)setContentOffset:(CGPoint)contentOffset
     [self.contentView scrollToPoint:contentOffset];
   }
 #else // ]TODO(macOS ISS#2323203)
-  super.contentOffset = contentOffset;
+  super.contentOffset = CGPointMake(
+    RCTSanitizeNaNValue(contentOffset.x, @"scrollView.contentOffset.x"),
+    RCTSanitizeNaNValue(contentOffset.y, @"scrollView.contentOffset.y"));
 #endif // TODO(macOS ISS#2323203)
 }
 
@@ -882,6 +884,7 @@ - (void)delegateMethod:(UIScrollView *)scrollView           \
 
 RCT_SCROLL_EVENT_HANDLER(scrollViewWillBeginDecelerating, onMomentumScrollBegin)
 RCT_SCROLL_EVENT_HANDLER(scrollViewDidZoom, onScroll)
+RCT_SCROLL_EVENT_HANDLER(scrollViewDidScrollToTop, onScrollToTop)
 
 - (void)addScrollListener:(NSObject<UIScrollViewDelegate> *)scrollListener
 {
@@ -978,6 +981,8 @@ - (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoi
 
     // Find which axis to snap
     BOOL isHorizontal = [self isHorizontal:scrollView];
+    CGFloat velocityAlongAxis = isHorizontal ? velocity.x : velocity.y;
+    CGFloat offsetAlongAxis = isHorizontal ? _scrollView.contentOffset.x : _scrollView.contentOffset.y;
 
     // Calculate maximum content offset
     CGSize viewportSize = [self _calculateViewportSize];
@@ -1011,9 +1016,26 @@ - (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoi
       ? smallerOffset
       : largerOffset;
 
-    // Chose the correct snap offset based on velocity
-    CGFloat velocityAlongAxis = isHorizontal ? velocity.x : velocity.y;
-    if (velocityAlongAxis > 0.0) {
+    CGFloat firstOffset = [[self.snapToOffsets firstObject] floatValue];
+    CGFloat lastOffset = [[self.snapToOffsets lastObject] floatValue];
+
+    // if scrolling after the last snap offset and snapping to the
+    // end of the list is disabled, then we allow free scrolling
+    if (!self.snapToEnd && targetOffset >= lastOffset) {
+      if (offsetAlongAxis >= lastOffset) {
+        // free scrolling
+      } else {
+        // snap to end
+        targetOffset = lastOffset;
+      }
+    } else if (!self.snapToStart && targetOffset <= firstOffset) {
+      if (offsetAlongAxis <= firstOffset) {
+        // free scrolling
+      } else {
+        // snap to beginning
+        targetOffset = firstOffset;
+      }
+    } else if (velocityAlongAxis > 0.0) {
       targetOffset = largerOffset;
     } else if (velocityAlongAxis < 0.0) {
       targetOffset = smallerOffset;
diff --git a/React/Views/ScrollView/RCTScrollViewManager.h b/React/Views/ScrollView/RCTScrollViewManager.h
index 5cfbf26321396c..12d602ed25e1cd 100644
--- a/React/Views/ScrollView/RCTScrollViewManager.h
+++ b/React/Views/ScrollView/RCTScrollViewManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/ScrollView/RCTScrollViewManager.m b/React/Views/ScrollView/RCTScrollViewManager.m
index ed87d7f3c55834..5357c2ef6c6582 100644
--- a/React/Views/ScrollView/RCTScrollViewManager.m
+++ b/React/Views/ScrollView/RCTScrollViewManager.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -87,10 +87,13 @@ - (RCTPlatformView *)view
 RCT_EXPORT_VIEW_PROPERTY(scrollIndicatorInsets, UIEdgeInsets)
 RCT_EXPORT_VIEW_PROPERTY(snapToInterval, int)
 RCT_EXPORT_VIEW_PROPERTY(snapToOffsets, NSArray<NSNumber *>)
+RCT_EXPORT_VIEW_PROPERTY(snapToStart, BOOL)
+RCT_EXPORT_VIEW_PROPERTY(snapToEnd, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(snapToAlignment, NSString)
 RCT_REMAP_VIEW_PROPERTY(contentOffset, scrollView.contentOffset, CGPoint)
 RCT_EXPORT_VIEW_PROPERTY(onScrollBeginDrag, RCTDirectEventBlock)
 RCT_EXPORT_VIEW_PROPERTY(onScroll, RCTDirectEventBlock)
+RCT_EXPORT_VIEW_PROPERTY(onScrollToTop, RCTDirectEventBlock)
 RCT_EXPORT_VIEW_PROPERTY(onScrollEndDrag, RCTDirectEventBlock)
 RCT_EXPORT_VIEW_PROPERTY(onMomentumScrollBegin, RCTDirectEventBlock)
 RCT_EXPORT_VIEW_PROPERTY(onMomentumScrollEnd, RCTDirectEventBlock)
diff --git a/React/Views/ScrollView/RCTScrollableProtocol.h b/React/Views/ScrollView/RCTScrollableProtocol.h
index 8eca1492580208..de5acedb48a8d6 100644
--- a/React/Views/ScrollView/RCTScrollableProtocol.h
+++ b/React/Views/ScrollView/RCTScrollableProtocol.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/UIView+Private.h b/React/Views/UIView+Private.h
index e44be8f1debd18..84efc859ec9d6f 100644
--- a/React/Views/UIView+Private.h
+++ b/React/Views/UIView+Private.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/UIView+React.h b/React/Views/UIView+React.h
index 763da7ebd7d2ce..429f9d74c64e3a 100644
--- a/React/Views/UIView+React.h
+++ b/React/Views/UIView+React.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/Views/UIView+React.m b/React/Views/UIView+React.m
index 0e9ca3a655970a..23f42329b74f8a 100644
--- a/React/Views/UIView+React.m
+++ b/React/Views/UIView+React.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/React/third-party.xcconfig b/React/third-party.xcconfig
index 1976b396c78388..3ce55a008225fd 100644
--- a/React/third-party.xcconfig
+++ b/React/third-party.xcconfig
@@ -2,9 +2,11 @@
 //  folly.xcconfig
 //  CxxReact
 //
-//  Created by Marc Horowitz on 1/12/17.
-//  Copyright © 2017 Facebook. All rights reserved.
+//  Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
 //
 
-HEADER_SEARCH_PATHS = $(SRCROOT)/../third-party/boost_1_63_0 $(SRCROOT)/../third-party/folly-2016.10.31.00 $(SRCROOT)/../third-party/glog-0.3.5/src
+HEADER_SEARCH_PATHS = $(SRCROOT)/../third-party/boost_1_63_0 $(SRCROOT)/../third-party/folly-2018.10.22.00 $(SRCROOT)/../third-party/glog-0.3.5/src
 OTHER_CFLAGS = -DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1
diff --git a/ReactAndroid/build.gradle b/ReactAndroid/build.gradle
index 19d17a7c8002fa..fd8a379cb09ae7 100644
--- a/ReactAndroid/build.gradle
+++ b/ReactAndroid/build.gradle
@@ -1,12 +1,13 @@
-// Copyright (c) 2015-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
-apply plugin: 'com.android.library'
-apply plugin: 'maven'
-
-apply plugin: 'de.undercouch.download'
+plugins {
+    id("com.android.library")
+    id("maven")
+    id("de.undercouch.download")
+}
 
 import de.undercouch.gradle.tasks.download.Download
 import org.apache.tools.ant.taskdefs.condition.Os
@@ -58,10 +59,10 @@ def isV8Enabled() {
 
 // For GitHub CI - we use this task
 task downloadBoost(dependsOn: createNativeDepsDirectories, type: Download) {
-    src 'https://github.com/react-native-community/boost-for-react-native/releases/download/v1.63.0-0/boost_1_63_0.tar.gz'
+    src "https://github.com/react-native-community/boost-for-react-native/releases/download/v${BOOST_VERSION.replace("_", ".")}-0/boost_${BOOST_VERSION}.tar.gz"
     onlyIfNewer true
     overwrite false
-    dest new File(downloadsDir, 'boost_1_63_0.tar.gz')
+    dest new File(downloadsDir, "boost_${BOOST_VERSION}.tar.gz")
 }
 
 task prepareBoost(dependsOn: createNativeDepsDirectories, type: Copy) {
@@ -259,7 +260,7 @@ android {
 
     sourceSets.main {
         jni.srcDirs = []
-        jniLibs.srcDir "$buildDir/react-ndk/exported"
+        jniLibs.srcDirs = ["$buildDir/react-ndk/exported", 'src/main/jni/third-party/jsc/jni']
         res.srcDirs = ['src/main/res/devsupport', 'src/main/res/shell', 'src/main/res/views/modal', 'src/main/res/views/uimanager']
         java {
             srcDirs = ['src/main/java', 'src/main/libraries/soloader/java', 'src/main/jni/first-party/fb/jni/java']
@@ -296,17 +297,15 @@ dependencies {
 
     api 'com.facebook.infer.annotation:infer-annotation:0.11.2'
     api 'javax.inject:javax.inject:1'
-    api 'com.android.support:appcompat-v7:26.0.2'
+    api 'com.android.support:appcompat-v7:28.0.0'
     api "com.facebook.fresco:fresco:${FRESCO_VERSION}"
     api "com.facebook.fresco:imagepipeline-okhttp3:${FRESCO_VERSION}"
-    api 'com.facebook.soloader:soloader:0.5.1'
+    api "com.facebook.soloader:soloader:${SO_LOADER_VERSION}"
     api 'com.google.code.findbugs:jsr305:3.0.2'
     api "com.squareup.okhttp3:okhttp:${OKHTTP_VERSION}"
     api "com.squareup.okhttp3:okhttp-urlconnection:${OKHTTP_VERSION}"
-    api 'com.squareup.okio:okio:1.14.0'
-    if (!isV8Enabled()) {
-        compile 'org.webkit:android-jsc:r174650'
-    }
+    api 'com.squareup.okio:okio:1.15.0'
+    compile 'org.webkit:android-jsc:r174650'
 
     testImplementation "junit:junit:${JUNIT_VERSION}"
     testImplementation "org.powermock:powermock-api-mockito:${POWERMOCK_VERSION}"
@@ -317,8 +316,9 @@ dependencies {
     testImplementation "org.robolectric:robolectric:${ROBOLECTRIC_VERSION}"
 
     androidTestImplementation fileTree(dir: 'src/main/third-party/java/buck-android-support/', include: ['*.jar'])
-    androidTestImplementation 'com.android.support.test:runner:0.3'
+    androidTestImplementation "com.android.support.test:runner:${ANDROID_SUPPORT_TEST_VERSION}"
+    androidTestImplementation "com.android.support.test:rules:${ANDROID_SUPPORT_TEST_VERSION}"
     androidTestImplementation "org.mockito:mockito-core:${MOCKITO_CORE_VERSION}"
 }
 
-apply from: 'release.gradle'
+apply from: 'release.gradle'
\ No newline at end of file
diff --git a/ReactAndroid/gradle.properties b/ReactAndroid/gradle.properties
index 35b82ce516f757..7dadee0424cdd9 100644
--- a/ReactAndroid/gradle.properties
+++ b/ReactAndroid/gradle.properties
@@ -1,4 +1,4 @@
-VERSION_NAME=1000.0.0-master
+VERSION_NAME=0.58.6
 GROUP=com.facebook.react
 
 POM_NAME=ReactNative
@@ -12,4 +12,11 @@ JUNIT_VERSION=4.12
 FEST_ASSERT_CORE_VERSION=2.0M10
 
 FRESCO_VERSION=1.10.0
-OKHTTP_VERSION=3.10.0
+ANDROID_SUPPORT_TEST_VERSION=1.0.2
+OKHTTP_VERSION=3.12.1
+SO_LOADER_VERSION=0.6.0
+
+BOOST_VERSION=1_63_0
+DOUBLE_CONVERSION_VERSION=1.1.6
+FOLLY_VERSION=2018.10.22.00
+GLOG_VERSION=0.3.5
\ No newline at end of file
diff --git a/ReactAndroid/libs/BUCK b/ReactAndroid/libs/BUCK
index 9d188656453694..ecdf0c0c644d37 100644
--- a/ReactAndroid/libs/BUCK
+++ b/ReactAndroid/libs/BUCK
@@ -1,21 +1,23 @@
-android_prebuilt_aar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.android_prebuilt_aar(
     name = "appcompat",
     aar = ":appcompat-binary-aar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "appcompat-binary-aar",
-    sha1 = "22b1ef4ff9ef1a3513c18eb132d597eac6ef1a86",
-    url = "mvn:com.android.support:appcompat-v7:aar:27.1.1",
+    sha1 = "132586ec59604a86703796851a063a0ac61f697b",
+    url = "mvn:com.android.support:appcompat-v7:aar:28.0.0",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
     name = "android-jsc",
     aar = ":android-jsc-aar",
 )
 
-remote_file(
+fb_native.remote_file(
     name = "android-jsc-aar",
     sha1 = "880cedd93f43e0fc841f01f2fa185a63d9230f85",
     url = "mvn:org.webkit:android-jsc:aar:r174650",
diff --git a/ReactAndroid/proguard-rules.pro b/ReactAndroid/proguard-rules.pro
index aa586132f2f853..84f5e603a17b9a 100644
--- a/ReactAndroid/proguard-rules.pro
+++ b/ReactAndroid/proguard-rules.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # Add project specific ProGuard rules here.
 # By default, the flags in this file are appended to flags specified
 # in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
diff --git a/ReactAndroid/release.gradle b/ReactAndroid/release.gradle
index d01daf739de1bf..cc66a47e39eb65 100644
--- a/ReactAndroid/release.gradle
+++ b/ReactAndroid/release.gradle
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/AndroidManifest.xml b/ReactAndroid/src/androidTest/AndroidManifest.xml
index 62c744e8f895bf..0ebc7b4768ecba 100644
--- a/ReactAndroid/src/androidTest/AndroidManifest.xml
+++ b/ReactAndroid/src/androidTest/AndroidManifest.xml
@@ -6,6 +6,8 @@
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <!-- needed for screenshot tests -->
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+  <!-- needed for image onError tests -->
+  <uses-permission android:name="android.permission.INTERNET" />
 
   <application
     android:hardwareAccelerated="false">
diff --git a/ReactAndroid/src/androidTest/assets/BUCK b/ReactAndroid/src/androidTest/assets/BUCK
index 97e046d36f0cba..6bead0a25d6abb 100644
--- a/ReactAndroid/src/androidTest/assets/BUCK
+++ b/ReactAndroid/src/androidTest/assets/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "rn_android_resource")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_resource")
 
 rn_android_resource(
     name = "assets",
diff --git a/ReactAndroid/src/androidTest/buck-runner/AndroidManifest.xml b/ReactAndroid/src/androidTest/buck-runner/AndroidManifest.xml
index 8fd01fc76607a3..7672ea05ee6767 100644
--- a/ReactAndroid/src/androidTest/buck-runner/AndroidManifest.xml
+++ b/ReactAndroid/src/androidTest/buck-runner/AndroidManifest.xml
@@ -7,6 +7,8 @@
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <!-- needed for screenshot tests -->
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+  <!-- needed for image onError tests -->
+  <uses-permission android:name="android.permission.INTERNET" />
 
   <application
     android:hardwareAccelerated="false">
diff --git a/ReactAndroid/src/androidTest/buck-runner/BUCK b/ReactAndroid/src/androidTest/buck-runner/BUCK
index d854a78f7a7a9c..61848a4977a37c 100644
--- a/ReactAndroid/src/androidTest/buck-runner/BUCK
+++ b/ReactAndroid/src/androidTest/buck-runner/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "KEYSTORE_TARGET", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_binary")
+load("//tools/build_defs/oss:rn_defs.bzl", "KEYSTORE_TARGET", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_binary")
 
 # We are running instrumentation tests in simple mode: app code and instrumentation are in the same APK
 # Currently you need to run these commands to execute tests:
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AbstractScrollViewTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AbstractScrollViewTestCase.java
index 713ab5962d6d40..efd2ab6f1f6a49 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AbstractScrollViewTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AbstractScrollViewTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AssertModule.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AssertModule.java
index 0d1e87860033e6..16ac3f8182c335 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AssertModule.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/AssertModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/BUCK
index 8b61c439ef5276..a88b8ccb4e0ddb 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/BUCK
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/BUCK
@@ -1,9 +1,9 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "testing",
     srcs = glob(
-        ["**/*.java"],
+        ["*.java"],
         exclude = [
             "idledetection/**/*.java",
             "network/**/*.java",
@@ -28,7 +28,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/common:common"),
         react_native_target("java/com/facebook/react/devsupport:interfaces"),
         react_native_target("java/com/facebook/react/fabric:fabric"),
-        react_native_target("java/com/facebook/react/fabric/jsc:jsc"),
+        react_native_target("java/com/facebook/react/jscexecutor:jscexecutor"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
         react_native_target("java/com/facebook/react/module/model:model"),
         react_native_target("java/com/facebook/react/modules/core:core"),
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FabricUIManagerFactory.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FabricUIManagerFactory.java
new file mode 100644
index 00000000000000..2dedfa9006efe6
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FabricUIManagerFactory.java
@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ */
+package com.facebook.react.testing;
+
+import com.facebook.react.bridge.JavaScriptContextHolder;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.UIManager;
+import com.facebook.react.uimanager.ViewManagerRegistry;
+
+/** Factory used to create FabricUIManager in Testing infrastructure. */
+public interface FabricUIManagerFactory {
+
+  UIManager getFabricUIManager(
+      ReactApplicationContext reactApplicationContext,
+      ViewManagerRegistry viewManagerRegistry,
+      JavaScriptContextHolder jsContext);
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeAsyncLocalStorage.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeAsyncLocalStorage.java
index 2d52005eb0976a..34e1c2f19ffb15 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeAsyncLocalStorage.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeAsyncLocalStorage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeWebSocketModule.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeWebSocketModule.java
index b5bf197683c4e1..52d0467e4a0a5b 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeWebSocketModule.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/FakeWebSocketModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/InstanceSpecForTestPackage.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/InstanceSpecForTestPackage.java
index cdfb21491bdba0..4e9399771679d5 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/InstanceSpecForTestPackage.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/InstanceSpecForTestPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/IntRecordingModule.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/IntRecordingModule.java
index 7806dacdf62ce6..1650611acb9031 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/IntRecordingModule.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/IntRecordingModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/JSIntegrationTestChecker.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/JSIntegrationTestChecker.java
index 59b949e979509e..478cd0d2ea2d6c 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/JSIntegrationTestChecker.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/JSIntegrationTestChecker.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/MultipleFailureException.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/MultipleFailureException.java
index 6073cd6b96e5e2..533fa1aa49a82b 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/MultipleFailureException.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/MultipleFailureException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppInstrumentationTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppInstrumentationTestCase.java
index b01d0542af4b12..18f35707ac565c 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppInstrumentationTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppInstrumentationTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppTestActivity.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppTestActivity.java
index 91b2c523dbff83..3dce0330d0bc6f 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppTestActivity.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactAppTestActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
  * directory of this source tree.
@@ -10,7 +10,6 @@
 
 import android.content.Intent;
 import android.graphics.Bitmap;
-import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.v4.app.FragmentActivity;
 import android.view.View;
@@ -29,8 +28,6 @@
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.UIManager;
 import com.facebook.react.common.LifecycleState;
-import com.facebook.react.fabric.FabricUIManager;
-import com.facebook.react.fabric.jsc.FabricJSCBinding;
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.facebook.react.modules.core.PermissionAwareActivity;
 import com.facebook.react.modules.core.PermissionListener;
@@ -199,7 +196,7 @@ public void onGlobalLayout() {
           throw new RuntimeException("Layout never occurred for component " + appKey, e);}
   }
 
-  public void loadBundle(ReactInstanceSpecForTest spec, String bundleName, boolean useDevSupport) {
+  public void loadBundle(final ReactInstanceSpecForTest spec, String bundleName, boolean useDevSupport) {
 
     mBridgeIdleSignaler = new ReactBridgeIdleSignaler();
 
@@ -208,6 +205,9 @@ public void loadBundle(ReactInstanceSpecForTest spec, String bundleName, boolean
             .getReactInstanceManagerBuilder()
             .setApplication(getApplication())
             .setBundleAssetName(bundleName);
+    if (spec.getJavaScriptExecutorFactory() != null) {
+      builder.setJavaScriptExecutorFactory(spec.getJavaScriptExecutorFactory());
+    }
     if (!spec.getAlternativeReactPackagesForTest().isEmpty()) {
       builder.addPackages(spec.getAlternativeReactPackagesForTest());
     } else {
@@ -239,22 +239,13 @@ public Class<? extends JSIModule> getJSIModuleClass() {
                       public JSIModuleProvider getJSIModuleProvider() {
                         return new JSIModuleProvider() {
                           @Override
-                          public FabricUIManager get() {
-                            List<ViewManager> viewManagers =
-                                mReactInstanceManager.getOrCreateViewManagers(
-                                    reactApplicationContext);
-                            EventDispatcher eventDispatcher =
-                                reactApplicationContext
-                                    .getNativeModule(UIManagerModule.class)
-                                    .getEventDispatcher();
-                            FabricUIManager fabricUIManager =
-                                new FabricUIManager(
-                                    reactApplicationContext,
-                                    new ViewManagerRegistry(viewManagers),
-                                    jsContext,
-                                    eventDispatcher);
-                            new FabricJSCBinding().installFabric(jsContext, fabricUIManager);
-                            return fabricUIManager;
+                          public UIManager get() {
+                            ViewManagerRegistry viewManagerRegistry =
+                              new ViewManagerRegistry(
+                                mReactInstanceManager.getOrCreateViewManagers(reactApplicationContext));
+
+                            FabricUIManagerFactory factory = spec.getFabricUIManagerFactory();
+                            return factory != null ? factory.getFabricUIManager(reactApplicationContext, viewManagerRegistry, jsContext) : null;
                           }
                         };
                       }
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstanceSpecForTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstanceSpecForTest.java
index 4f37e63f7d97bc..f26917dc3de370 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstanceSpecForTest.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstanceSpecForTest.java
@@ -1,20 +1,21 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.testing;
 
 import android.annotation.SuppressLint;
 import com.facebook.react.ReactPackage;
+import com.facebook.react.bridge.JavaScriptExecutorFactory;
 import com.facebook.react.bridge.JavaScriptModule;
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.uimanager.ViewManager;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import javax.annotation.Nullable;
 
 /**
  * A spec that allows a test to add additional NativeModules/JS modules to the ReactInstance. This
@@ -25,16 +26,24 @@
 public class ReactInstanceSpecForTest {
 
   private final List<NativeModule> mNativeModules =
-    new ArrayList<NativeModule>(Arrays.asList(new FakeWebSocketModule()));
+      new ArrayList<NativeModule>(Arrays.asList(new FakeWebSocketModule()));
   private final List<Class<? extends JavaScriptModule>> mJSModuleSpecs = new ArrayList<>();
   private final List<ViewManager> mViewManagers = new ArrayList<>();
   private final ArrayList<ReactPackage> mReactPackages = new ArrayList<>();
+  @Nullable private FabricUIManagerFactory mFabricUIManagerFactory = null;
+  @Nullable private JavaScriptExecutorFactory mJavaScriptExecutorFactory = null;
 
   public ReactInstanceSpecForTest addNativeModule(NativeModule module) {
     mNativeModules.add(module);
     return this;
   }
 
+  public ReactInstanceSpecForTest setJavaScriptExecutorFactory(
+      JavaScriptExecutorFactory javaScriptExecutorFactory) {
+    mJavaScriptExecutorFactory = javaScriptExecutorFactory;
+    return this;
+  }
+
   public ReactInstanceSpecForTest setPackage(ReactPackage reactPackage) {
     if (!mReactPackages.isEmpty()) {
       throw new IllegalStateException(
@@ -44,6 +53,16 @@ public ReactInstanceSpecForTest setPackage(ReactPackage reactPackage) {
     return this;
   }
 
+  public ReactInstanceSpecForTest setFabricUIManagerFactory(@Nullable FabricUIManagerFactory fabricUIManagerFactory) {
+    mFabricUIManagerFactory = fabricUIManagerFactory;
+    return this;
+  }
+
+  @Nullable
+  public FabricUIManagerFactory getFabricUIManagerFactory() {
+    return mFabricUIManagerFactory;
+  }
+
   public ReactInstanceSpecForTest addPackages(List<ReactPackage> reactPackages) {
     mReactPackages.addAll(reactPackages);
     return this;
@@ -66,6 +85,11 @@ public ReactPackage getAlternativeReactPackageForTest() {
     return mReactPackages.get(0);
   }
 
+  @Nullable
+  public JavaScriptExecutorFactory getJavaScriptExecutorFactory() {
+    return mJavaScriptExecutorFactory;
+  }
+
   public List<ReactPackage> getAlternativeReactPackagesForTest() {
     return mReactPackages;
   }
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstrumentationTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstrumentationTest.java
index 938835f3def79c..9e3e489c959b17 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstrumentationTest.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactInstrumentationTest.java
@@ -1,32 +1,37 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.testing;
 
 import android.content.Intent;
 import android.test.ActivityInstrumentationTestCase2;
 import android.view.View;
 import android.view.ViewGroup;
+import com.facebook.react.bridge.JavaScriptExecutorFactory;
 import com.facebook.react.bridge.JavaScriptModule;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.testing.idledetection.IdleWaiter;
+import javax.annotation.Nullable;
 
 /**
  * Base class for instrumentation tests that runs React based application.
  *
- * This is similar to ReactAppInstrumentationTestCase except ReactInstrumentationTest allows
+ * <p>This is similar to ReactAppInstrumentationTestCase except ReactInstrumentationTest allows
  * optional rendering of components. A test case can render no components or render multiple
  * components.
  */
-public abstract class ReactInstrumentationTest extends
-    ActivityInstrumentationTestCase2<ReactAppTestActivity> implements IdleWaiter {
+public abstract class ReactInstrumentationTest
+    extends ActivityInstrumentationTestCase2<ReactAppTestActivity> implements IdleWaiter {
 
   protected StringRecordingModule mRecordingModule;
 
+  @Nullable protected FabricUIManagerFactory mFabricUIManagerFactory = null;
+
+  @Nullable protected JavaScriptExecutorFactory mJavaScriptExecutorFactory = null;
+
   public ReactInstrumentationTest() {
     super(ReactAppTestActivity.class);
   }
@@ -40,16 +45,11 @@ protected void setUp() throws Exception {
     setActivityIntent(intent);
     mRecordingModule = new StringRecordingModule();
     final ReactAppTestActivity activity = getActivity();
-    activity.loadBundle(
-        createReactInstanceSpecForTest(),
-        getBundleName(),
-        getEnableDevSupport());
+    activity.loadBundle(createReactInstanceSpecForTest(), getBundleName(), getEnableDevSupport());
   }
 
-  /**
-   * Renders this component within this test's activity
-   */
-  public void renderComponent(final String componentName) throws Exception {
+  /** Renders this component within this test's activity */
+  public void renderComponent(final String componentName) {
     getActivity().renderComponent(componentName, null);
     waitForBridgeAndUIIdle();
   }
@@ -66,8 +66,8 @@ public ViewGroup getRootView() {
   }
 
   public <T extends View> T getViewByTestId(String testID) {
-    return (T) ReactTestHelper
-        .getViewWithReactTestId((ViewGroup) getRootView().getParent(), testID);
+    return (T)
+        ReactTestHelper.getViewWithReactTestId((ViewGroup) getRootView().getParent(), testID);
   }
 
   public SingleTouchGestureGenerator createGestureGenerator() {
@@ -94,16 +94,20 @@ protected <T extends JavaScriptModule> T getJSModule(Class<T> jsInterface) {
     return getReactContext().getJSModule(jsInterface);
   }
 
-  /**
-   * Override this method to provide extra native modules to be loaded before the app starts
-   */
+  /** Override this method to provide extra native modules to be loaded before the app starts */
   protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
-    return new ReactInstanceSpecForTest().addNativeModule(mRecordingModule);
+    ReactInstanceSpecForTest reactInstanceSpecForTest =
+        new ReactInstanceSpecForTest().addNativeModule(mRecordingModule);
+    if (mJavaScriptExecutorFactory != null) {
+      reactInstanceSpecForTest.setJavaScriptExecutorFactory(mJavaScriptExecutorFactory);
+    }
+    if (mFabricUIManagerFactory != null) {
+      reactInstanceSpecForTest.setFabricUIManagerFactory(mFabricUIManagerFactory);
+    }
+    return reactInstanceSpecForTest;
   }
 
-  /**
-   * Implement this method to provide the bundle for this test
-   */
+  /** Implement this method to provide the bundle for this test */
   protected abstract String getBundleName();
 
   protected ReactContext getReactContext() {
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactIntegrationTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactIntegrationTestCase.java
index e08878d3c780f9..6c0828a6aa311f 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactIntegrationTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactIntegrationTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactSettingsForTests.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactSettingsForTests.java
index 47137dbbe177af..20945f5316f6a4 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactSettingsForTests.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactSettingsForTests.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestAppShell.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestAppShell.java
index 54d03bc35f192b..8ec1cf9ab0e091 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestAppShell.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestAppShell.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestApplicationImpl.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestApplicationImpl.java
index fdf40c300f3dc5..49db8b66d1e4fc 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestApplicationImpl.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestApplicationImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestFactory.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestFactory.java
index 20cbfb938b4018..f22dbb7b206655 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestFactory.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestHelper.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestHelper.java
index f3f1ffc29552de..a11a6a3499a529 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestHelper.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,10 @@
 
 package com.facebook.react.testing;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 import javax.annotation.Nullable;
 
 import android.app.Instrumentation;
@@ -20,6 +24,7 @@
 import com.facebook.react.R;
 import com.facebook.react.ReactInstanceManager;
 import com.facebook.react.ReactInstanceManagerBuilder;
+import com.facebook.react.ReactPackage;
 import com.facebook.react.bridge.CatalystInstance;
 import com.facebook.react.bridge.JavaScriptModuleRegistry;
 import com.facebook.react.bridge.NativeModule;
@@ -29,10 +34,10 @@
 import com.facebook.react.bridge.queue.ReactQueueConfigurationSpec;
 import com.facebook.react.bridge.CatalystInstanceImpl;
 import com.facebook.react.bridge.JSBundleLoader;
-import com.facebook.react.bridge.JSCJavaScriptExecutorFactory;
 import com.facebook.react.bridge.JavaScriptExecutor;
+import com.facebook.react.jscexecutor.JSCExecutorFactory;
 import com.facebook.react.modules.core.ReactChoreographer;
-
+import com.facebook.react.uimanager.ViewManager;
 import com.android.internal.util.Predicate;
 
 public class ReactTestHelper {
@@ -50,14 +55,24 @@ public ReactInstanceEasyBuilder setContext(Context context) {
       }
 
       @Override
-      public ReactInstanceEasyBuilder addNativeModule(NativeModule nativeModule) {
+      public ReactInstanceEasyBuilder addNativeModule(final NativeModule nativeModule) {
         if (mNativeModuleRegistryBuilder == null) {
           mNativeModuleRegistryBuilder = new NativeModuleRegistryBuilder(
             (ReactApplicationContext) mContext,
             null);
         }
         Assertions.assertNotNull(nativeModule);
-        mNativeModuleRegistryBuilder.addNativeModule(nativeModule);
+        mNativeModuleRegistryBuilder.processPackage(new ReactPackage(){
+        	@Override
+        	public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+        	   return Collections.emptyList();
+        	}
+
+        	@Override
+        	public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+        		return Arrays.asList(nativeModule);
+        	}
+        });
         return this;
       }
 
@@ -70,7 +85,7 @@ public CatalystInstance build() {
         }
         JavaScriptExecutor executor = null;
         try {
-          executor = new JSCJavaScriptExecutorFactory("ReactTestHelperApp", "ReactTestHelperDevice").create();
+          executor = new JSCExecutorFactory("ReactTestHelperApp", "ReactTestHelperDevice").create();
         } catch (Exception e) {
           throw new RuntimeException(e);
         }
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ScreenshotingFrameLayout.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ScreenshotingFrameLayout.java
index 42eb0abfda88fa..b21088a8e2a314 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ScreenshotingFrameLayout.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/ScreenshotingFrameLayout.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/SingleTouchGestureGenerator.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/SingleTouchGestureGenerator.java
index 027291dcaf8f5b..8340977b73ec71 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/SingleTouchGestureGenerator.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/SingleTouchGestureGenerator.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/StringRecordingModule.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/StringRecordingModule.java
index bc827f2a85ff3c..6dd70646f0d77c 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/StringRecordingModule.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/StringRecordingModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/BUCK
index 35312a7305a9b8..61925bb545baec 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/BUCK
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "idledetection",
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/IdleWaiter.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/IdleWaiter.java
index d32494f92a5d5f..958e15dfec668e 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/IdleWaiter.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/IdleWaiter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactBridgeIdleSignaler.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactBridgeIdleSignaler.java
index 05b6662493fdae..72aa0d46c4b0af 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactBridgeIdleSignaler.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactBridgeIdleSignaler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactIdleDetectionUtil.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactIdleDetectionUtil.java
index 00f9aefaa4e99b..c749cfef94a280 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactIdleDetectionUtil.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/idledetection/ReactIdleDetectionUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,7 @@
 
 package com.facebook.react.testing.idledetection;
 
+import android.view.Choreographer;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
@@ -55,7 +56,8 @@ private static void waitForChoreographer(long timeToWait) {
         new Runnable() {
           @Override
           public void run() {
-            ChoreographerCompat.getInstance().postFrameCallback(
+            final ChoreographerCompat choreographerCompat = ChoreographerCompat.getInstance();
+            choreographerCompat.postFrameCallback(
                 new ChoreographerCompat.FrameCallback() {
 
                   private int frameCount = 0;
@@ -66,7 +68,7 @@ public void doFrame(long frameTimeNanos) {
                     if (frameCount == waitFrameCount) {
                       latch.countDown();
                     } else {
-                      ChoreographerCompat.getInstance().postFrameCallback(this);
+                      choreographerCompat.postFrameCallback(this);
                     }
                   }
                 });
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/BUCK
index bcb816f893a824..4d3c1f73dbabd8 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/BUCK
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "network",
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/NetworkRecordingModuleMock.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/NetworkRecordingModuleMock.java
index 0f5c96831099c5..64bb99301d7a37 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/NetworkRecordingModuleMock.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/network/NetworkRecordingModuleMock.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/BUCK
new file mode 100644
index 00000000000000..e1c7eed2913c06
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/BUCK
@@ -0,0 +1,37 @@
+# BUILD FILE SYNTAX: SKYLARK
+load(
+    "//tools/build_defs/oss:rn_defs.bzl",
+    "IS_OSS_BUILD",
+    "react_native_dep",
+    "react_native_integration_tests_target",
+    "react_native_target",
+    "rn_android_library",
+)
+
+rn_android_library(
+    name = "rule",
+    srcs = glob(["*.java"]),
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = ([
+        react_native_dep("third-party/java/espresso:espresso"),
+        react_native_dep("third-party/java/jsr-305:jsr-305"),
+        react_native_dep("third-party/java/junit:junit"),
+        react_native_dep("third-party/java/testing-support-lib:testing-support-lib"),
+        react_native_dep("third-party/android/support/v4:lib-support-v4"),
+        react_native_dep("third-party/android/support/v7/appcompat-orig:appcompat"),
+        react_native_dep("third-party/java/jsr-305:jsr-305"),
+        react_native_integration_tests_target("java/com/facebook/react/testing:testing"),
+        react_native_integration_tests_target("java/com/facebook/react/testing/idledetection:idledetection"),
+        react_native_target("java/com/facebook/react:react"),
+        react_native_target("java/com/facebook/react/bridge:bridge"),
+        react_native_target("java/com/facebook/react/common:common"),
+        react_native_target("java/com/facebook/react/modules/core:core"),
+        react_native_target("java/com/facebook/react/shell:shell"),
+        react_native_target("java/com/facebook/react/uimanager:uimanager"),
+    ]) + ([
+        react_native_dep("java/com/facebook/testing/instrumentation:instrumentation"),
+        react_native_dep("java/com/facebook/testing/instrumentation/base:base"),
+    ]) if not IS_OSS_BUILD else [],
+)
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/ReactNativeTestRule.java b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/ReactNativeTestRule.java
new file mode 100644
index 00000000000000..1f19e85aa0fbbc
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/testing/rule/ReactNativeTestRule.java
@@ -0,0 +1,180 @@
+//  Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+package com.facebook.react.testing.rule;
+
+import android.app.Activity;
+import android.os.Build;
+import android.support.test.rule.ActivityTestRule;
+import android.view.ViewTreeObserver.OnGlobalLayoutListener;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.ReactRootView;
+import com.facebook.react.bridge.ReactContext;
+import com.facebook.react.common.LifecycleState;
+import com.facebook.react.shell.MainReactPackage;
+import com.facebook.react.testing.ReactInstanceSpecForTest;
+import com.facebook.react.testing.ReactTestHelper;
+import com.facebook.react.testing.idledetection.ReactBridgeIdleSignaler;
+import com.facebook.react.testing.idledetection.ReactIdleDetectionUtil;
+import com.facebook.react.uimanager.ReactShadowNode;
+import com.facebook.react.uimanager.UIImplementation;
+import com.facebook.react.uimanager.UIManagerModule;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+import org.junit.Rule;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/** A test rule to simplify React Native rendering tests. */
+public class ReactNativeTestRule implements TestRule {
+
+  // we need a bigger timeout for CI builds because they run on a slow emulator
+  private static final long IDLE_TIMEOUT_MS = 120000;
+
+  @Rule public ActivityTestRule<Activity> mActivityRule = new ActivityTestRule<>(Activity.class);
+
+  private final String mBundleName;
+  private ReactPackage mReactPackage;
+  private ReactInstanceManager mReactInstanceManager;
+  private ReactBridgeIdleSignaler mBridgeIdleSignaler;
+  private ReactRootView mView;
+  private CountDownLatch mLatch;
+
+  public ReactNativeTestRule(String bundleName) {
+    this(bundleName, null);
+  }
+
+  public ReactNativeTestRule(String bundleName, ReactPackage reactPackage) {
+    mBundleName = bundleName;
+    mReactPackage = reactPackage;
+  }
+
+  @Override
+  public Statement apply(final Statement base, final Description description) {
+    return new Statement() {
+      @Override
+      public void evaluate() throws Throwable {
+        setUp();
+        base.evaluate();
+        tearDown();
+      }
+    };
+  }
+
+  @SuppressWarnings("deprecation")
+  private void setUp() {
+    final Activity activity = mActivityRule.launchActivity(null);
+    mView = new ReactRootView(activity);
+
+    activity.runOnUiThread(
+        new Runnable() {
+          @Override
+          public void run() {
+            mBridgeIdleSignaler = new ReactBridgeIdleSignaler();
+            mReactInstanceManager =
+                ReactTestHelper.getReactTestFactory()
+                    .getReactInstanceManagerBuilder()
+                    .setApplication(activity.getApplication())
+                    .setBundleAssetName(mBundleName)
+                    .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
+                    .setBridgeIdleDebugListener(mBridgeIdleSignaler)
+                    .addPackage(mReactPackage != null ? mReactPackage : new MainReactPackage())
+                    .build();
+            mReactInstanceManager.onHostResume(activity);
+
+            // This threading garbage will be replaced by Surface
+            final AtomicBoolean isLayoutUpdated = new AtomicBoolean(false);
+            mReactInstanceManager.addReactInstanceEventListener(
+                new ReactInstanceManager.ReactInstanceEventListener() {
+                  @Override
+                  public void onReactContextInitialized(ReactContext reactContext) {
+                    final UIManagerModule uiManagerModule =
+                        reactContext.getCatalystInstance().getNativeModule(UIManagerModule.class);
+                    uiManagerModule
+                        .getUIImplementation()
+                        .setLayoutUpdateListener(
+                            new UIImplementation.LayoutUpdateListener() {
+                              @Override
+                              public void onLayoutUpdated(ReactShadowNode reactShadowNode) {
+                                uiManagerModule.getUIImplementation().removeLayoutUpdateListener();
+                                isLayoutUpdated.set(true);
+                              }
+                            });
+                  }
+                });
+            mView
+                .getViewTreeObserver()
+                .addOnGlobalLayoutListener(
+                    new OnGlobalLayoutListener() {
+                      @Override
+                      public void onGlobalLayout() {
+                        if (isLayoutUpdated.get()) {
+                          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+                            mView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                          } else {
+                            mView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
+                          }
+                          mLatch.countDown();
+                        }
+                      }
+                    });
+          }
+        });
+  }
+
+  private void tearDown() {
+    final ReactRootView view = mView;
+    final ReactInstanceManager reactInstanceManager = mReactInstanceManager;
+    mView = null;
+    mReactInstanceManager = null;
+    mActivityRule
+        .getActivity()
+        .runOnUiThread(
+            new Runnable() {
+              @Override
+              public void run() {
+                view.unmountReactApplication();
+                reactInstanceManager.destroy();
+              }
+            });
+  }
+
+  /** Renders the react component and waits until the layout has completed before returning */
+  public void render(final String componentName) {
+    mLatch = new CountDownLatch(1);
+    final Activity activity = mActivityRule.getActivity();
+    activity.runOnUiThread(
+        new Runnable() {
+          @Override
+          public void run() {
+            ReactRootView view = getView();
+            view.startReactApplication(mReactInstanceManager, componentName);
+            activity.setContentView(view);
+          }
+        });
+    int timeoutSec = 10;
+    try {
+      mLatch.await(timeoutSec, TimeUnit.SECONDS);
+    } catch (InterruptedException e) {
+      throw new RuntimeException(
+          "Failed to render " + componentName + " after " + timeoutSec + " seconds");
+    }
+  }
+
+  public void waitForIdleSync() {
+    ReactIdleDetectionUtil.waitForBridgeAndUIIdle(
+      mBridgeIdleSignaler,
+      mReactInstanceManager.getCurrentReactContext(),
+      IDLE_TIMEOUT_MS);
+  }
+
+  /** Returns the react view */
+  public ReactRootView getView() {
+    return mView;
+  }
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/AnimatedTransformTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/AnimatedTransformTest.java
new file mode 100644
index 00000000000000..f2ddc0d2e9ed37
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/AnimatedTransformTest.java
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.tests;
+
+import android.view.View;
+
+
+import com.facebook.react.testing.ReactInstanceSpecForTest;
+import com.facebook.react.testing.StringRecordingModule;
+import com.facebook.react.bridge.JavaScriptModule;
+import com.facebook.react.testing.ReactAppInstrumentationTestCase;
+import com.facebook.react.testing.ReactTestHelper;
+
+/**
+ * Integration test for {@code removeClippedSubviews} property that verify correct scrollview
+ * behavior
+ */
+public class AnimatedTransformTest extends ReactAppInstrumentationTestCase {
+
+  private StringRecordingModule mStringRecordingModule;
+
+  @Override
+  protected String getReactApplicationKeyUnderTest() {
+    return "AnimatedTransformTestApp";
+  }
+
+  @Override
+  protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
+    mStringRecordingModule = new StringRecordingModule();
+    return super.createReactInstanceSpecForTest()
+        .addNativeModule(mStringRecordingModule);
+  }
+
+  public void testAnimatedRotation() {
+    waitForBridgeAndUIIdle();
+
+    View button = ReactTestHelper.getViewWithReactTestId(
+        getActivity().getRootView(),
+        "TouchableOpacity");
+
+    // Tap the button which triggers the animated transform containing the 
+    // rotation strings.
+    createGestureGenerator().startGesture(button).endGesture();
+    waitForBridgeAndUIIdle();
+
+    // The previous cast error will prevent it from getting here
+    assertEquals(2, mStringRecordingModule.getCalls().size());
+  }
+
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/BUCK
index e39c0147a7cb75..a80f3f40ef4e60 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/BUCK
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/BUCK
@@ -1,8 +1,8 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_integration_tests_target", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "tests",
-    srcs = glob(["**/*.java"]),
+    srcs = glob(["*.java"]),
     visibility = [
         "PUBLIC",
     ],
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMeasureLayoutTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMeasureLayoutTest.java
index 6f3d5843b1a91e..a86805fb62c0de 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMeasureLayoutTest.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMeasureLayoutTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMultitouchHandlingTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMultitouchHandlingTestCase.java
index 1a2a783dcc9beb..9a18ca66cb5103 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMultitouchHandlingTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystMultitouchHandlingTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJSToJavaParametersTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJSToJavaParametersTestCase.java
index a2d42bb1a66152..9db47e58b09862 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJSToJavaParametersTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJSToJavaParametersTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSArgumentsTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSArgumentsTestCase.java
index 3ba5bc1989b08c..0014233333e56e 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSArgumentsTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSArgumentsTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSReturnValuesTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSReturnValuesTestCase.java
index 63a2ff0a727838..d53d98feb5a8ea 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSReturnValuesTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystNativeJavaToJSReturnValuesTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystSubviewsClippingTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystSubviewsClippingTestCase.java
index 4b360901013fc3..5b7033695cd954 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystSubviewsClippingTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystSubviewsClippingTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystTouchBubblingTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystTouchBubblingTestCase.java
index b150641e020155..7b9a7f8431d366 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystTouchBubblingTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystTouchBubblingTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystUIManagerTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystUIManagerTestCase.java
index 895b1df155098f..1c98ec39d217cf 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystUIManagerTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/CatalystUIManagerTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/DatePickerDialogTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/DatePickerDialogTestCase.java
index cf5949e667a81d..b131f813c97aa8 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/DatePickerDialogTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/DatePickerDialogTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageErrorTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageErrorTestCase.java
new file mode 100644
index 00000000000000..3676a9cd202cf1
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageErrorTestCase.java
@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.tests;
+
+import android.view.View;
+import com.facebook.react.testing.ReactAppInstrumentationTestCase;
+import com.facebook.react.testing.ReactInstanceSpecForTest;
+import com.facebook.react.testing.StringRecordingModule;
+
+/**
+ * Simple test case to check that onError does not get called with undefined
+ */
+public class ImageErrorTestCase extends ReactAppInstrumentationTestCase {
+
+  private StringRecordingModule mStringRecordingModule;
+
+  @Override
+  protected String getReactApplicationKeyUnderTest() {
+    return "ImageErrorTestApp";
+  }
+
+  public void testErrorHasCause() throws Exception {
+    assertNotNull(getViewByTestId("image-1"));
+    assertNotNull(getViewByTestId("image-2"));
+    assertNotNull(getViewByTestId("image-3"));
+
+    Thread.sleep(3000);
+  
+    assertEquals(3, mStringRecordingModule.getCalls().size());
+    assertEquals("Got error: Unsupported uri scheme! Uri is: ", mStringRecordingModule.getCalls().get(0));
+    assertEquals("Got error: /does/not/exist: open failed: ENOENT (No such file or directory)", mStringRecordingModule.getCalls().get(1));
+    assertEquals("Got error: Unexpected HTTP code Response{protocol=http/1.1, code=404, message=Not Found, url=https://typo_error_facebook.github.io/react/logo-og.png}", mStringRecordingModule.getCalls().get(2));
+  }
+
+  @Override
+  protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
+    mStringRecordingModule = new StringRecordingModule();
+    return super.createReactInstanceSpecForTest()
+        .addNativeModule(mStringRecordingModule);
+  }
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageOverlayColorTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageOverlayColorTestCase.java
new file mode 100644
index 00000000000000..4dd334af88f6e1
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ImageOverlayColorTestCase.java
@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.tests;
+
+import android.view.View;
+import com.facebook.react.testing.ReactAppInstrumentationTestCase;
+
+/**
+ * Simple test case for passing overlayColor prop to the Image component
+ */
+public class ImageOverlayColorTestCase extends ReactAppInstrumentationTestCase {
+
+  @Override
+  protected String getReactApplicationKeyUnderTest() {
+    return "ImageOverlayColorTestApp";
+  }
+
+  public void testOverlayColorDoesNotCrash() {
+    View image = getViewByTestId("image");
+    assertNotNull(image);
+  }
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/InitialPropsTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/InitialPropsTestCase.java
index 99de8a830014fc..bf754df05df6e1 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/InitialPropsTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/InitialPropsTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSLocaleTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSLocaleTest.java
index e78a25522f1029..3875ad878f85ef 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSLocaleTest.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSLocaleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSResponderTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSResponderTestCase.java
index ca05cfae197fed..077298065b0283 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSResponderTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSResponderTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/LayoutEventsTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/LayoutEventsTestCase.java
index bab295fa709c42..f9f7741d8c7dd2 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/LayoutEventsTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/LayoutEventsTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/NativeIdTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/NativeIdTestCase.java
index 6888f021d9757d..0cfd4d6c277104 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/NativeIdTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/NativeIdTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ProgressBarTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ProgressBarTestCase.java
index eae42334412f0b..19989b52426beb 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ProgressBarTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ProgressBarTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactHorizontalScrollViewTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactHorizontalScrollViewTestCase.java
index 52a8750d43066a..e1defbb208b36c 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactHorizontalScrollViewTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactHorizontalScrollViewTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactPickerTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactPickerTestCase.java
index cc2f680a37941c..ec8fd977a0a0e5 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactPickerTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactPickerTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactRootViewTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactRootViewTestCase.java
deleted file mode 100644
index f912347b497d82..00000000000000
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactRootViewTestCase.java
+++ /dev/null
@@ -1,105 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.tests;
-
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.FrameLayout;
-
-import com.facebook.react.testing.ReactInstanceSpecForTest;
-import com.facebook.react.testing.ReactAppInstrumentationTestCase;
-import com.facebook.react.testing.StringRecordingModule;
-import com.facebook.react.ReactRootView;
-
-import org.junit.Ignore;
-
-/**
- * Integration test for {@link ReactRootView}.
- */
-public class ReactRootViewTestCase extends ReactAppInstrumentationTestCase {
-
-  private StringRecordingModule mRecordingModule;
-
-  @Override
-  protected String getReactApplicationKeyUnderTest() {
-    return "CatalystRootViewTestApp";
-  }
-
-  @Ignore("t6596940: fix intermittently failing test")
-  public void testResizeRootView() throws Throwable {
-    final ReactRootView rootView = (ReactRootView) getRootView();
-    final View childView = rootView.getChildAt(0);
-
-    assertEquals(rootView.getWidth(), childView.getWidth());
-
-    final int newWidth = rootView.getWidth() / 2;
-
-    runTestOnUiThread(
-        new Runnable() {
-          @Override
-          public void run() {
-            rootView.setLayoutParams(new FrameLayout.LayoutParams(
-                    newWidth,
-                    ViewGroup.LayoutParams.MATCH_PARENT));
-          }
-        });
-
-    getInstrumentation().waitForIdleSync();
-    waitForBridgeAndUIIdle();
-
-    assertEquals(newWidth, childView.getWidth());
-  }
-
-  /**
-   * Verify that removing the root view from hierarchy will trigger subviews removal both on JS and
-   * native side
-   */
-  public void testRemoveRootView() throws Throwable {
-    final ReactRootView rootView = (ReactRootView) getRootView();
-
-    assertEquals(1, rootView.getChildCount());
-
-    runTestOnUiThread(
-        new Runnable() {
-          @Override
-          public void run() {
-            ViewGroup parent = (ViewGroup) rootView.getParent();
-            parent.removeView(rootView);
-            // removing from parent should not remove child views, child views should be removed as
-            // an effect of native call to UIManager.removeRootView
-            assertEquals(1, rootView.getChildCount());
-          }
-        });
-
-    getInstrumentation().waitForIdleSync();
-    waitForBridgeAndUIIdle();
-
-    assertEquals("root component should not be automatically unmounted", 0, mRecordingModule.getCalls().size());
-    assertEquals(1, rootView.getChildCount());
-
-    runTestOnUiThread(
-        new Runnable() {
-          @Override
-          public void run() {
-            rootView.unmountReactApplication();
-          }
-        });
-    waitForBridgeAndUIIdle();
-
-    assertEquals(1, mRecordingModule.getCalls().size());
-    assertEquals("RootComponentWillUnmount", mRecordingModule.getCalls().get(0));
-    assertEquals(0, rootView.getChildCount());
-  }
-
-  @Override
-  protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
-    mRecordingModule = new StringRecordingModule();
-    return new ReactInstanceSpecForTest()
-        .addNativeModule(mRecordingModule);
-  }
-}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactScrollViewTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactScrollViewTestCase.java
index b947e50a87a405..0267bb8e28b01b 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactScrollViewTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactScrollViewTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactSwipeRefreshLayoutTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactSwipeRefreshLayoutTestCase.java
index 417bf4159b98a5..a75b217131f13d 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactSwipeRefreshLayoutTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ReactSwipeRefreshLayoutTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ShareTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ShareTestCase.java
index ccfa9f2b862d6a..83dae93deec17a 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ShareTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ShareTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TestIdTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TestIdTestCase.java
index 1b0a904cdfddbc..47696a68460717 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TestIdTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TestIdTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TextInputTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TextInputTestCase.java
index cd0e8362d8f415..ffc9c9e8ce2468 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TextInputTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TextInputTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TimePickerDialogTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TimePickerDialogTestCase.java
index 3af83b91877572..a15ecbcae42e1a 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TimePickerDialogTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/TimePickerDialogTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ViewRenderingTestCase.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ViewRenderingTestCase.java
index 1b28762be5905a..edccc5e89f9361 100644
--- a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ViewRenderingTestCase.java
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/ViewRenderingTestCase.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/BUCK b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/BUCK
new file mode 100644
index 00000000000000..e6d696155497d9
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/BUCK
@@ -0,0 +1,29 @@
+# BUILD FILE SYNTAX: SKYLARK
+load(
+    "//tools/build_defs/oss:rn_defs.bzl",
+    "IS_OSS_BUILD",
+    "react_native_dep",
+    "react_native_integration_tests_target",
+    "react_native_target",
+    "rn_android_library",
+)
+
+rn_android_library(
+    name = "core",
+    srcs = glob(["*.java"]),
+    deps = ([
+        react_native_dep("third-party/java/espresso:espresso"),
+        react_native_dep("third-party/java/fest:fest"),
+        react_native_dep("third-party/java/junit:junit"),
+        react_native_dep("third-party/java/testing-support-lib:testing-support-lib"),
+        react_native_integration_tests_target("java/com/facebook/react/testing:testing"),
+        react_native_integration_tests_target("java/com/facebook/react/testing/rule:rule"),
+        react_native_target("java/com/facebook/react:react"),
+        react_native_target("java/com/facebook/react/bridge:bridge"),
+        react_native_target("java/com/facebook/react/common:common"),
+        react_native_target("java/com/facebook/react/shell:shell"),
+        react_native_target("java/com/facebook/react/uimanager:uimanager"),
+    ]) + ([
+        react_native_dep("java/com/facebook/fbreact/testing:testing"),
+    ]) if not IS_OSS_BUILD else [],
+)
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactInstanceManagerTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactInstanceManagerTest.java
new file mode 100644
index 00000000000000..e03721be842f6c
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactInstanceManagerTest.java
@@ -0,0 +1,92 @@
+//  Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+package com.facebook.react.tests.core;
+
+import android.app.Activity;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.annotation.UiThreadTest;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactRootView;
+import com.facebook.react.common.LifecycleState;
+import com.facebook.react.shell.MainReactPackage;
+import com.facebook.react.testing.ReactTestHelper;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class ReactInstanceManagerTest {
+
+  private static final String TEST_MODULE = "ViewLayoutTestApp";
+
+  private ReactInstanceManager mReactInstanceManager;
+  private ReactRootView mReactRootView;
+
+  @Rule public ActivityTestRule<Activity> mActivityRule = new ActivityTestRule<>(Activity.class);
+
+  @Before
+  public void setup() {
+    Activity activity = mActivityRule.getActivity();
+    mReactRootView = new ReactRootView(activity);
+    mReactInstanceManager =
+      ReactTestHelper.getReactTestFactory()
+        .getReactInstanceManagerBuilder()
+        .setApplication(activity.getApplication())
+        .setBundleAssetName("AndroidTestBundle.js")
+        .setInitialLifecycleState(LifecycleState.BEFORE_CREATE)
+        .addPackage(new MainReactPackage())
+        .build();
+  }
+
+  @After
+  public void tearDown() {
+    final ReactRootView reactRootView = mReactRootView;
+    final ReactInstanceManager reactInstanceManager = mReactInstanceManager;
+    InstrumentationRegistry.getInstrumentation().runOnMainSync(new Runnable() {
+      @Override
+      public void run() {
+        reactRootView.unmountReactApplication();
+        reactInstanceManager.destroy();
+      }
+    });
+  }
+
+  @Test
+  @UiThreadTest
+  public void testMountUnmount() {
+    mReactInstanceManager.onHostResume(mActivityRule.getActivity());
+    mReactRootView.startReactApplication(mReactInstanceManager, TEST_MODULE);
+    mReactRootView.unmountReactApplication();
+  }
+
+  @Test
+  @UiThreadTest
+  public void testResume() throws InterruptedException {
+    mReactInstanceManager.onHostResume(mActivityRule.getActivity());
+    mReactRootView.startReactApplication(mReactInstanceManager, TEST_MODULE);
+    mReactInstanceManager.onHostResume(mActivityRule.getActivity());
+  }
+
+  @Test
+  @UiThreadTest
+  public void testRecreateContext() throws InterruptedException {
+    mReactInstanceManager.onHostResume(mActivityRule.getActivity());
+    mReactInstanceManager.createReactContextInBackground();
+    mReactRootView.startReactApplication(mReactInstanceManager, TEST_MODULE);
+  }
+
+  @Test
+  @UiThreadTest
+  public void testMountTwice() {
+    mReactInstanceManager.onHostResume(mActivityRule.getActivity());
+    mReactRootView.startReactApplication(mReactInstanceManager, TEST_MODULE);
+    mReactInstanceManager.attachRootView(mReactRootView);
+  }
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactRootViewTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactRootViewTest.java
new file mode 100644
index 00000000000000..f7cc389c2e2257
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/ReactRootViewTest.java
@@ -0,0 +1,132 @@
+//  Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+package com.facebook.react.tests.core;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import android.app.Instrumentation;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.ReactRootView;
+import com.facebook.react.bridge.ModuleSpec;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.shell.MainReactPackage;
+import com.facebook.react.testing.StringRecordingModule;
+import com.facebook.react.testing.rule.ReactNativeTestRule;
+import java.util.ArrayList;
+import java.util.List;
+import javax.inject.Provider;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class ReactRootViewTest {
+
+  final StringRecordingModule mRecordingModule = new StringRecordingModule();
+  final ReactPackage mReactPackage = new MainReactPackage() {
+    @Override
+    public List<ModuleSpec> getNativeModules(ReactApplicationContext context) {
+      List<ModuleSpec> modules = new ArrayList<>(super.getNativeModules(context));
+      modules.add(
+        ModuleSpec.nativeModuleSpec(
+          StringRecordingModule.class,
+          new Provider<NativeModule>() {
+            @Override
+            public NativeModule get() {
+              return mRecordingModule;
+            }
+          }));
+      return modules;
+    }
+  };
+
+  @Rule
+  public ReactNativeTestRule mReactNativeRule =
+    new ReactNativeTestRule("AndroidTestBundle.js", mReactPackage);
+
+  @Before
+  public void setup() {
+    mReactNativeRule.render("CatalystRootViewTestApp");
+  }
+
+  @Test
+  public void testResizeRootView() {
+    final ReactRootView rootView = mReactNativeRule.getView();
+    final View childView = rootView.getChildAt(0);
+
+    assertThat(rootView.getWidth()).isEqualTo(childView.getWidth());
+
+    final int newWidth = rootView.getWidth() / 2;
+
+    Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
+    instrumentation.runOnMainSync(
+      new Runnable() {
+        @Override
+        public void run() {
+          rootView.setLayoutParams(new FrameLayout.LayoutParams(
+            newWidth,
+            ViewGroup.LayoutParams.MATCH_PARENT));
+        }
+      });
+
+    instrumentation.waitForIdleSync();
+    mReactNativeRule.waitForIdleSync();
+
+    assertThat(newWidth).isEqualTo(childView.getWidth());
+  }
+
+  /**
+   * Verify that removing the root view from hierarchy will trigger subviews removal both on JS and
+   * native side
+   */
+  @Test
+  public void testRemoveRootView() {
+    final ReactRootView rootView = mReactNativeRule.getView();
+
+    assertThat(rootView.getChildCount()).isEqualTo(1);
+
+    Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
+    instrumentation.runOnMainSync(
+      new Runnable() {
+        @Override
+        public void run() {
+          ViewGroup parent = (ViewGroup) rootView.getParent();
+          parent.removeView(rootView);
+          // removing from parent should not remove child views, child views should be removed as
+          // an effect of native call to UIManager.removeRootView
+          assertThat(rootView.getChildCount()).isEqualTo(1);
+        }
+      });
+
+    instrumentation.waitForIdleSync();
+    mReactNativeRule.waitForIdleSync();
+
+    assertThat(mRecordingModule.getCalls().size())
+      .isEqualTo(0)
+      .overridingErrorMessage("root component should not be automatically unmounted");
+    assertThat(rootView.getChildCount()).isEqualTo(1);
+
+    instrumentation.runOnMainSync(
+      new Runnable() {
+        @Override
+        public void run() {
+          rootView.unmountReactApplication();
+        }
+      });
+    mReactNativeRule.waitForIdleSync();
+
+    assertThat(mRecordingModule.getCalls().size()).isEqualTo(1);
+    assertThat(mRecordingModule.getCalls().get(0)).isEqualTo("RootComponentWillUnmount");
+    assertThat(rootView.getChildCount()).isEqualTo(0);
+  }
+}
diff --git a/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/WritableNativeMapTest.java b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/WritableNativeMapTest.java
new file mode 100644
index 00000000000000..bb2ad2c9babf52
--- /dev/null
+++ b/ReactAndroid/src/androidTest/java/com/facebook/react/tests/core/WritableNativeMapTest.java
@@ -0,0 +1,104 @@
+package com.facebook.react.tests.core;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import android.support.test.runner.AndroidJUnit4;
+import com.facebook.react.bridge.UnexpectedNativeTypeException;
+import com.facebook.react.bridge.WritableNativeArray;
+import com.facebook.react.bridge.WritableNativeMap;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class WritableNativeMapTest {
+
+  private WritableNativeMap mMap;
+
+  @Before
+  public void setup() {
+    mMap = new WritableNativeMap();
+    mMap.putBoolean("boolean", true);
+    mMap.putDouble("double", 1.2);
+    mMap.putInt("int", 1);
+    mMap.putString("string", "abc");
+    mMap.putMap("map", new WritableNativeMap());
+    mMap.putArray("array", new WritableNativeArray());
+    mMap.putBoolean("dvacca", true);
+    mMap.setUseNativeAccessor(true);
+  }
+
+  @Test
+  public void testBoolean() {
+    assertThat(mMap.getBoolean("boolean")).isEqualTo(true);
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testBooleanInvalidType() {
+    mMap.getBoolean("string");
+  }
+
+  @Test
+  public void testDouble() {
+    assertThat(mMap.getDouble("double")).isEqualTo(1.2);
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testDoubleInvalidType() {
+    mMap.getDouble("string");
+  }
+
+  @Test
+  public void testInt() {
+    assertThat(mMap.getInt("int")).isEqualTo(1);
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testIntInvalidType() {
+    mMap.getInt("string");
+  }
+
+  @Test
+  public void testString() {
+    assertThat(mMap.getString("string")).isEqualTo("abc");
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testStringInvalidType() {
+    mMap.getString("int");
+  }
+
+  @Test
+  public void testMap() {
+    assertThat(mMap.getMap("map")).isNotNull();
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testMapInvalidType() {
+    mMap.getMap("string");
+  }
+
+  @Test
+  public void testArray() {
+    assertThat(mMap.getArray("array")).isNotNull();
+  }
+
+  @Test(expected = UnexpectedNativeTypeException.class)
+  public void testArrayInvalidType() {
+    mMap.getArray("string");
+  }
+
+  @Ignore("Needs to be implemented")
+  @Test
+  public void testErrorMessageContainsKey() {
+    String key = "fkg";
+    try {
+      mMap.getString(key);
+      Assert.fail("Expected an UnexpectedNativeTypeException to be thrown");
+    } catch (UnexpectedNativeTypeException e) {
+      assertThat(e.getMessage()).contains(key);
+    }
+  }
+}
diff --git a/ReactAndroid/src/androidTest/js/AnimatedTransformTestModule.js b/ReactAndroid/src/androidTest/js/AnimatedTransformTestModule.js
new file mode 100644
index 00000000000000..f5c9e863d31336
--- /dev/null
+++ b/ReactAndroid/src/androidTest/js/AnimatedTransformTestModule.js
@@ -0,0 +1,81 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule AnimatedTransformTestModule
+ */
+
+'use strict';
+
+var BatchedBridge = require('BatchedBridge');
+var React = require('React');
+var StyleSheet = require('StyleSheet');
+var View = require('View');
+var TouchableOpacity = require('TouchableOpacity');
+var Text = require('Text');
+var RecordingModule = require('NativeModules').Recording;
+
+const styles = StyleSheet.create({
+  base: {
+    width: 200,
+    height: 200,
+    backgroundColor: 'red',
+    transform: [{rotate: '0deg'}],
+  },
+  transformed: {
+    transform: [{rotate: '45deg'}],
+  },
+});
+
+/**
+ * This app presents a TouchableOpacity which was the simplest way to
+ * demonstrate this issue. Tapping the TouchableOpacity causes an animated
+ * transform to be created for the rotation property. Since the property isn't
+ * animated itself, it comes through as a static property, but static properties
+ * can't currently handle strings which causes a string->double cast exception.
+ */
+class AnimatedTransformTestApp extends React.Component {
+  constructor(props) {
+    super(props);
+    this.toggle = this.toggle.bind(this);
+  }
+
+  state = {
+    flag: false,
+  };
+
+  toggle() {
+    this.setState({
+      flag: !this.state.flag,
+    });
+  }
+
+  render() {
+    // Using this to verify if its fixed.
+    RecordingModule.record('render');
+
+    return (
+      <View style={StyleSheet.absoluteFill}>
+        <TouchableOpacity
+          onPress={this.toggle}
+          testID="TouchableOpacity"
+          style={[styles.base, this.state.flag ? styles.transformed : null]}>
+            <Text>TouchableOpacity</Text>
+        </TouchableOpacity>
+      </View>
+    );
+  }
+}
+
+var AnimatedTransformTestModule = {
+  AnimatedTransformTestApp: AnimatedTransformTestApp,
+};
+
+BatchedBridge.registerCallableModule(
+  'AnimatedTransformTestModule',
+  AnimatedTransformTestModule
+);
+
+module.exports = AnimatedTransformTestModule;
diff --git a/ReactAndroid/src/androidTest/js/Asserts.js b/ReactAndroid/src/androidTest/js/Asserts.js
index 467065d0e944ee..0eb0fd4fa3ee50 100644
--- a/ReactAndroid/src/androidTest/js/Asserts.js
+++ b/ReactAndroid/src/androidTest/js/Asserts.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 'use strict';
 
-var Assert = require('NativeModules').Assert;
+const Assert = require('NativeModules').Assert;
 
-var Asserts = {
+const Asserts = {
   assertEquals: function(expected, actual, msg) {
     if (expected !== actual) {
       Assert.fail(
diff --git a/ReactAndroid/src/androidTest/js/CatalystRootViewTestModule.js b/ReactAndroid/src/androidTest/js/CatalystRootViewTestModule.js
index 497fc48e353075..52413188abf3d7 100644
--- a/ReactAndroid/src/androidTest/js/CatalystRootViewTestModule.js
+++ b/ReactAndroid/src/androidTest/js/CatalystRootViewTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,10 @@
 
 'use strict';
 
-var React = require('React');
-var Recording = require('NativeModules').Recording;
-var View = require('View');
+const React = require('React');
+const Recording = require('NativeModules').Recording;
+const StyleSheet = require('StyleSheet');
+const View = require('View');
 
 class CatalystRootViewTestApp extends React.Component {
   componentWillUnmount() {
@@ -19,10 +20,16 @@ class CatalystRootViewTestApp extends React.Component {
   }
 
   render() {
-    return <View collapsable={false} style={{alignSelf: 'stretch'}} />;
+    return <View collapsable={false} style={styles.container} />;
   }
 }
 
+const styles = StyleSheet.create({
+  container: {
+    alignSelf: 'stretch',
+  },
+});
+
 module.exports = {
   CatalystRootViewTestApp: CatalystRootViewTestApp,
 };
diff --git a/ReactAndroid/src/androidTest/js/DatePickerDialogTestModule.js b/ReactAndroid/src/androidTest/js/DatePickerDialogTestModule.js
index b15808cde63478..0bc26d185e8a38 100644
--- a/ReactAndroid/src/androidTest/js/DatePickerDialogTestModule.js
+++ b/ReactAndroid/src/androidTest/js/DatePickerDialogTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,12 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var DatePickerAndroid = require('DatePickerAndroid');
-var React = require('React');
-var RecordingModule = require('NativeModules').DatePickerDialogRecordingModule;
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const DatePickerAndroid = require('DatePickerAndroid');
+const React = require('React');
+const RecordingModule = require('NativeModules')
+  .DatePickerDialogRecordingModule;
+const View = require('View');
 
 class DatePickerDialogTestApp extends React.Component {
   render() {
@@ -21,7 +22,7 @@ class DatePickerDialogTestApp extends React.Component {
   }
 }
 
-var DatePickerDialogTestModule = {
+const DatePickerDialogTestModule = {
   DatePickerDialogTestApp: DatePickerDialogTestApp,
   showDatePickerDialog: function(options) {
     DatePickerAndroid.open(options).then(
diff --git a/ReactAndroid/src/androidTest/js/ImageErrorTestApp.js b/ReactAndroid/src/androidTest/js/ImageErrorTestApp.js
new file mode 100644
index 00000000000000..0afc6c925e1225
--- /dev/null
+++ b/ReactAndroid/src/androidTest/js/ImageErrorTestApp.js
@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+'use strict';
+
+const React = require('React');
+const Image = require('Image');
+const StyleSheet = require('StyleSheet');
+const View = require('View');
+
+const RecordingModule = require('NativeModules').Recording;
+
+class ImageErrorTestApp extends React.Component {
+  onError = e => {
+    RecordingModule.record('Got error: ' + e.nativeEvent.error);
+  };
+
+  render() {
+    // For some reason image-2 needs explicit height. Without it onError is not triggered.
+    return (
+      <View>
+        <Image
+          testID="image-1"
+          source={{uri: '/does/not/exist'}}
+          onError={this.onError}
+        />
+        <Image
+          testID="image-2"
+          source={{uri: 'file:///does/not/exist'}}
+          style={styles.image}
+          onError={this.onError}
+        />
+        <Image
+          testID="image-3"
+          source={{
+            uri: 'https://TYPO_ERROR_facebook.github.io/react/logo-og.png',
+          }}
+          onError={this.onError}
+        />
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  image: {
+    height: 50,
+    width: 50,
+  },
+});
+
+module.exports = ImageErrorTestApp;
diff --git a/ReactAndroid/src/androidTest/js/ImageOverlayColorTestApp.js b/ReactAndroid/src/androidTest/js/ImageOverlayColorTestApp.js
new file mode 100644
index 00000000000000..2cb30a20e1db7a
--- /dev/null
+++ b/ReactAndroid/src/androidTest/js/ImageOverlayColorTestApp.js
@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+'use strict';
+
+const React = require('React');
+const Image = require('Image');
+
+class ImageOverlayColorTestApp extends React.Component {
+  render() {
+    const uri =
+      'data:image/gif;base64,' +
+      'R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAwAAAC8IyPqcvt3wCcDkiLc7C0qwyGHhSWpjQu5yqmCYsapy' +
+      'uvUUlvONmOZtfzgFzByTB10QgxOR0TqBQejhRNzOfkVJ+5YiUqrXF5Y5lKh/DeuNcP5yLWGsEbtLiOSpa/' +
+      'TPg7JpJHxyendzWTBfX0cxOnKPjgBzi4diinWGdkF8kjdfnycQZXZeYGejmJlZeGl9i2icVqaNVailT6F5' +
+      'iJ90m6mvuTS4OK05M0vDk0Q4XUtwvKOzrcd3iq9uisF81M1OIcR7lEewwcLp7tuNNkM3uNna3F2JQFo97V' +
+      'riy/Xl4/f1cf5VWzXyym7PHhhx4dbgYKAAA7';
+
+    return <Image testID="image" source={{uri: uri}} overlayColor="#FF0000" />;
+  }
+}
+
+module.exports = ImageOverlayColorTestApp;
diff --git a/ReactAndroid/src/androidTest/js/InitialPropsTestApp.js b/ReactAndroid/src/androidTest/js/InitialPropsTestApp.js
index c031fde6046f2e..d6a7270ba5bc5e 100644
--- a/ReactAndroid/src/androidTest/js/InitialPropsTestApp.js
+++ b/ReactAndroid/src/androidTest/js/InitialPropsTestApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 'use strict';
 
-var React = require('React');
-var RecordingModule = require('NativeModules').InitialPropsRecordingModule;
-var Text = require('Text');
+const React = require('React');
+const RecordingModule = require('NativeModules').InitialPropsRecordingModule;
+const Text = require('Text');
 
 class InitialPropsTestApp extends React.Component {
   componentDidMount() {
diff --git a/ReactAndroid/src/androidTest/js/JSResponderTestApp.js b/ReactAndroid/src/androidTest/js/JSResponderTestApp.js
index ff518018654079..b46af65aa19b4f 100644
--- a/ReactAndroid/src/androidTest/js/JSResponderTestApp.js
+++ b/ReactAndroid/src/androidTest/js/JSResponderTestApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,12 +9,12 @@
 
 'use strict';
 
-var React = require('React');
-var StyleSheet = require('StyleSheet');
-var View = require('View');
-var Text = require('Text');
-var PanResponder = require('PanResponder');
-var ScrollView = require('ScrollView');
+const React = require('React');
+const StyleSheet = require('StyleSheet');
+const View = require('View');
+const Text = require('Text');
+const PanResponder = require('PanResponder');
+const ScrollView = require('ScrollView');
 
 class JSResponderTestApp extends React.Component {
   _handleMoveShouldSetPanResponder = (e, gestureState) => {
@@ -28,8 +28,8 @@ class JSResponderTestApp extends React.Component {
   }
 
   render() {
-    var views = [];
-    for (var i = 0; i < 100; i++) {
+    const views = [];
+    for (let i = 0; i < 100; i++) {
       views[i] = (
         <View key={i} style={styles.row} collapsable={false}>
           <Text>I am row {i}</Text>
@@ -49,7 +49,7 @@ class JSResponderTestApp extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
   },
diff --git a/ReactAndroid/src/androidTest/js/LayoutEventsTestApp.js b/ReactAndroid/src/androidTest/js/LayoutEventsTestApp.js
index df25944f11664e..7f89b087b137d6 100644
--- a/ReactAndroid/src/androidTest/js/LayoutEventsTestApp.js
+++ b/ReactAndroid/src/androidTest/js/LayoutEventsTestApp.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,11 @@
 
 'use strict';
 
-var React = require('React');
-var View = require('View');
+const React = require('React');
+const View = require('View');
+const StyleSheet = require('StyleSheet');
 
-var RecordingModule = require('NativeModules').Recording;
+const RecordingModule = require('NativeModules').Recording;
 
 const LAYOUT_SPECS = [
   [10, 10, 100, 100],
@@ -31,7 +32,7 @@ class LayoutEventsTestApp extends React.Component {
   }
 
   handleOnLayout = e => {
-    var layout = e.nativeEvent.layout;
+    const layout = e.nativeEvent.layout;
     RecordingModule.record(
       layout.x + ',' + layout.y + '-' + layout.width + 'x' + layout.height,
     );
@@ -61,7 +62,7 @@ class LayoutEventsTestApp extends React.Component {
       <View
         onLayout={this.handleParentOnLayout}
         testID="parent"
-        style={{left: 0, top: 0, width: 500, height: 500}}>
+        style={styles.container}>
         <View
           onLayout={this.handleOnLayout}
           testID="container"
@@ -77,4 +78,13 @@ class LayoutEventsTestApp extends React.Component {
   }
 }
 
+const styles = StyleSheet.create({
+  container: {
+    left: 0,
+    top: 0,
+    width: 500,
+    height: 500,
+  },
+});
+
 module.exports = LayoutEventsTestApp;
diff --git a/ReactAndroid/src/androidTest/js/MeasureLayoutTestModule.js b/ReactAndroid/src/androidTest/js/MeasureLayoutTestModule.js
index 03e156b6f4cf63..7debdcd9d66d51 100644
--- a/ReactAndroid/src/androidTest/js/MeasureLayoutTestModule.js
+++ b/ReactAndroid/src/androidTest/js/MeasureLayoutTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,16 +9,16 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var ReactNative = require('ReactNative');
-var View = require('View');
-var StyleSheet = require('StyleSheet');
-var UIManager = require('UIManager');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const ReactNative = require('ReactNative');
+const View = require('View');
+const StyleSheet = require('StyleSheet');
+const UIManager = require('UIManager');
 
-var assertEquals = require('Asserts').assertEquals;
+const assertEquals = require('Asserts').assertEquals;
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   A: {
     width: 500,
     height: 500,
@@ -46,7 +46,7 @@ var styles = StyleSheet.create({
   },
 });
 
-var A, B, C, D;
+let A, B, C, D;
 
 class MeasureLayoutTestApp extends React.Component {
   componentDidMount() {
@@ -72,7 +72,7 @@ function shouldNotCallThisCallback() {
   assertEquals(false, true);
 }
 
-var MeasureLayoutTestModule = {
+const MeasureLayoutTestModule = {
   MeasureLayoutTestApp: MeasureLayoutTestApp,
   verifyMeasureOnViewA: function() {
     UIManager.measure(A, function(a, b, width, height, x, y) {
diff --git a/ReactAndroid/src/androidTest/js/MultitouchHandlingTestAppModule.js b/ReactAndroid/src/androidTest/js/MultitouchHandlingTestAppModule.js
index 58f6a460501c06..61e0824c1f6e53 100644
--- a/ReactAndroid/src/androidTest/js/MultitouchHandlingTestAppModule.js
+++ b/ReactAndroid/src/androidTest/js/MultitouchHandlingTestAppModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,11 @@
 
 'use strict';
 
-var React = require('React');
-var Recording = require('NativeModules').Recording;
-var StyleSheet = require('StyleSheet');
-var TouchEventUtils = require('fbjs/lib/TouchEventUtils');
-var View = require('View');
+const React = require('React');
+const Recording = require('NativeModules').Recording;
+const StyleSheet = require('StyleSheet');
+const TouchEventUtils = require('fbjs/lib/TouchEventUtils');
+const View = require('View');
 
 class TouchTestApp extends React.Component {
   handleStartShouldSetResponder = e => {
@@ -57,7 +57,7 @@ class TouchTestApp extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
   },
diff --git a/ReactAndroid/src/androidTest/js/NativeIdTestModule.js b/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
index daec9a252ee42e..161318fa10c806 100644
--- a/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
+++ b/ReactAndroid/src/androidTest/js/NativeIdTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/androidTest/js/PickerAndroidTestModule.js b/ReactAndroid/src/androidTest/js/PickerAndroidTestModule.js
index 97210eccb083e7..a2b7d3bc655d13 100644
--- a/ReactAndroid/src/androidTest/js/PickerAndroidTestModule.js
+++ b/ReactAndroid/src/androidTest/js/PickerAndroidTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,15 +9,15 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var RecordingModule = require('NativeModules').PickerAndroidRecordingModule;
-var Picker = require('Picker');
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const RecordingModule = require('NativeModules').PickerAndroidRecordingModule;
+const Picker = require('Picker');
+const View = require('View');
 
-var Item = Picker.Item;
+const Item = Picker.Item;
 
-var appInstance;
+let appInstance;
 
 class PickerAndroidTestApp extends React.Component {
   state = {
@@ -69,7 +69,7 @@ class PickerAndroidTestApp extends React.Component {
   };
 }
 
-var PickerAndroidTestModule = {
+const PickerAndroidTestModule = {
   PickerAndroidTestApp: PickerAndroidTestApp,
   selectItem: function(value) {
     appInstance.setState({selected: value});
diff --git a/ReactAndroid/src/androidTest/js/ProgressBarTestModule.js b/ReactAndroid/src/androidTest/js/ProgressBarTestModule.js
index e9b4b563ba82ed..b50ba788c30c23 100644
--- a/ReactAndroid/src/androidTest/js/ProgressBarTestModule.js
+++ b/ReactAndroid/src/androidTest/js/ProgressBarTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,12 +9,14 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var ProgressBar = require('ProgressBarAndroid');
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const ReactNative = require('react-native');
+const {StyleSheet} = ReactNative;
+const ProgressBar = require('ProgressBarAndroid');
+const View = require('View');
 
-var renderApplication = require('renderApplication');
+const renderApplication = require('renderApplication');
 
 class ProgressBarSampleApp extends React.Component {
   state = {};
@@ -29,7 +31,7 @@ class ProgressBarSampleApp extends React.Component {
         <ProgressBar styleAttr="Inverse" testID="Inverse" />
         <ProgressBar styleAttr="SmallInverse" testID="SmallInverse" />
         <ProgressBar styleAttr="LargeInverse" testID="LargeInverse" />
-        <View style={{width: 200}}>
+        <View style={styles.wrapper}>
           <ProgressBar styleAttr="Horizontal" testID="Horizontal200" />
         </View>
       </View>
@@ -37,7 +39,7 @@ class ProgressBarSampleApp extends React.Component {
   }
 }
 
-var ProgressBarTestModule = {
+const ProgressBarTestModule = {
   renderProgressBarApplication: function(rootTag) {
     renderApplication(ProgressBarSampleApp, {}, rootTag);
   },
@@ -48,4 +50,10 @@ BatchedBridge.registerCallableModule(
   ProgressBarTestModule,
 );
 
+const styles = StyleSheet.create({
+  wrapper: {
+    width: 200,
+  },
+});
+
 module.exports = ProgressBarTestModule;
diff --git a/ReactAndroid/src/androidTest/js/ScrollViewTestModule.js b/ReactAndroid/src/androidTest/js/ScrollViewTestModule.js
index f6f83beee3109b..1fa81476260d85 100644
--- a/ReactAndroid/src/androidTest/js/ScrollViewTestModule.js
+++ b/ReactAndroid/src/androidTest/js/ScrollViewTestModule.js
@@ -1,31 +1,40 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
+ * @flow
  */
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var createReactClass = require('create-react-class');
-var View = require('View');
-var ScrollView = require('ScrollView');
-var Text = require('Text');
-var StyleSheet = require('StyleSheet');
-var TouchableWithoutFeedback = require('TouchableWithoutFeedback');
-var ScrollListener = require('NativeModules').ScrollListener;
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const View = require('View');
+const ScrollView = require('ScrollView');
+const Text = require('Text');
+const StyleSheet = require('StyleSheet');
+const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
+const ScrollListener = require('NativeModules').ScrollListener;
 
-var NUM_ITEMS = 100;
+const NUM_ITEMS = 100;
+
+import type {PressEvent} from 'CoreEventTypes';
 
 // Shared by integration tests for ScrollView and HorizontalScrollView
 
-var scrollViewApp;
+let scrollViewApp;
+
+type ItemProps = $ReadOnly<{|
+  onPress: (event: PressEvent) => void,
+  text: string,
+|}>;
+
+type ItemState = {||};
 
-class Item extends React.Component {
+class Item extends React.Component<ItemProps, ItemState> {
   render() {
     return (
       <TouchableWithoutFeedback onPress={this.props.onPress}>
@@ -37,9 +46,9 @@ class Item extends React.Component {
   }
 }
 
-var getInitialState = function() {
-  var data = [];
-  for (var i = 0; i < NUM_ITEMS; i++) {
+const getInitialState = function() {
+  const data = [];
+  for (let i = 0; i < NUM_ITEMS; i++) {
     data[i] = {text: 'Item ' + i + '!'};
   }
   return {
@@ -47,92 +56,101 @@ var getInitialState = function() {
   };
 };
 
-var onScroll = function(e) {
+const onScroll = function(e) {
   ScrollListener.onScroll(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-var onScrollBeginDrag = function(e) {
+const onScrollBeginDrag = function(e) {
   ScrollListener.onScrollBeginDrag(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-var onScrollEndDrag = function(e) {
+const onScrollEndDrag = function(e) {
   ScrollListener.onScrollEndDrag(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-var onItemPress = function(itemNumber) {
+const onItemPress = function(itemNumber) {
   ScrollListener.onItemPress(itemNumber);
 };
 
-var ScrollViewTestApp = createReactClass({
-  displayName: 'ScrollViewTestApp',
-  getInitialState: getInitialState,
-  onScroll: onScroll,
-  onItemPress: onItemPress,
-  onScrollBeginDrag: onScrollBeginDrag,
-  onScrollEndDrag: onScrollEndDrag,
+type Props = $ReadOnly<{||}>;
+type State = {|
+  data: $ReadOnlyArray<{|text: string|}>,
+|};
 
-  scrollTo: function(destX, destY) {
-    this.refs.scrollView.scrollTo(destY, destX);
-  },
+class ScrollViewTestApp extends React.Component<Props, State> {
+  scrollView = React.createRef();
+  state = getInitialState();
+
+  scrollTo(destX: number, destY: number) {
+    const scrollView = this.scrollView.current;
+    if (scrollView == null) {
+      return;
+    }
 
-  render: function() {
+    scrollView.scrollTo(destY, destX);
+  }
+
+  render() {
     scrollViewApp = this;
-    var children = this.state.data.map((item, index) => (
+    const children = this.state.data.map((item, index) => (
       <Item
         key={index}
         text={item.text}
-        onPress={this.onItemPress.bind(this, index)}
+        onPress={onItemPress.bind(this, index)}
       />
     ));
     return (
       <ScrollView
-        onScroll={this.onScroll}
-        onScrollBeginDrag={this.onScrollBeginDrag}
-        onScrollEndDrag={this.onScrollEndDrag}
-        ref="scrollView">
+        onScroll={onScroll}
+        onScrollBeginDrag={onScrollBeginDrag}
+        onScrollEndDrag={onScrollEndDrag}
+        ref={this.scrollView}>
         {children}
       </ScrollView>
     );
-  },
-});
+  }
+}
 
-var HorizontalScrollViewTestApp = createReactClass({
-  displayName: 'HorizontalScrollViewTestApp',
-  getInitialState: getInitialState,
-  onScroll: onScroll,
-  onItemPress: onItemPress,
+class HorizontalScrollViewTestApp extends React.Component<Props, State> {
+  scrollView = React.createRef();
+  state = getInitialState();
 
-  scrollTo: function(destX, destY) {
-    this.refs.scrollView.scrollTo(destY, destX);
-  },
+  scrollTo(destX: number, destY: number) {
+    const scrollView = this.scrollView.current;
+    if (scrollView == null) {
+      return;
+    }
+
+    scrollView.scrollTo(destY, destX);
+  }
 
-  render: function() {
+  render() {
     scrollViewApp = this;
-    var children = this.state.data.map((item, index) => (
+    const children = this.state.data.map((item, index) => (
       <Item
         key={index}
         text={item.text}
-        onPress={this.onItemPress.bind(this, index)}
+        onPress={onItemPress.bind(this, index)}
       />
     ));
     return (
-      <ScrollView horizontal={true} onScroll={this.onScroll} ref="scrollView">
+      <ScrollView horizontal={true} onScroll={onScroll} ref={this.scrollView}>
         {children}
       </ScrollView>
     );
-  },
-});
+  }
+}
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   item_container: {
     padding: 30,
     backgroundColor: '#ffffff',
@@ -144,10 +162,10 @@ var styles = StyleSheet.create({
   },
 });
 
-var ScrollViewTestModule = {
+const ScrollViewTestModule = {
   ScrollViewTestApp: ScrollViewTestApp,
   HorizontalScrollViewTestApp: HorizontalScrollViewTestApp,
-  scrollTo: function(destX, destY) {
+  scrollTo(destX: number, destY: number) {
     scrollViewApp.scrollTo(destX, destY);
   },
 };
diff --git a/ReactAndroid/src/androidTest/js/ShareTestModule.js b/ReactAndroid/src/androidTest/js/ShareTestModule.js
index 3c230a3d0147a2..4ceadf4c105c82 100644
--- a/ReactAndroid/src/androidTest/js/ShareTestModule.js
+++ b/ReactAndroid/src/androidTest/js/ShareTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,11 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var RecordingModule = require('NativeModules').ShareRecordingModule;
-var Share = require('Share');
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const RecordingModule = require('NativeModules').ShareRecordingModule;
+const Share = require('Share');
+const View = require('View');
 
 class ShareTestApp extends React.Component {
   render() {
@@ -21,7 +21,7 @@ class ShareTestApp extends React.Component {
   }
 }
 
-var ShareTestModule = {
+const ShareTestModule = {
   ShareTestApp: ShareTestApp,
   showShareDialog: function(content, options) {
     Share.share(content, options).then(
diff --git a/ReactAndroid/src/androidTest/js/SubviewsClippingTestModule.js b/ReactAndroid/src/androidTest/js/SubviewsClippingTestModule.js
index 312dcb2c5d633b..307c0addb3eb4c 100644
--- a/ReactAndroid/src/androidTest/js/SubviewsClippingTestModule.js
+++ b/ReactAndroid/src/androidTest/js/SubviewsClippingTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,44 +9,43 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var ScrollView = require('ScrollView');
-var StyleSheet = require('StyleSheet');
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const ScrollView = require('ScrollView');
+const StyleSheet = require('StyleSheet');
+const View = require('View');
 
-var requireNativeComponent = require('requireNativeComponent');
+const requireNativeComponent = require('requireNativeComponent');
 
-var ClippableView = requireNativeComponent('ClippableView');
+const ClippableView = requireNativeComponent('ClippableView');
 
 class ClippingSample1 extends React.Component {
   render() {
-    var styles = sample1Styles;
     return (
       <View>
         <ClippableView
           clippableViewID="outer"
-          style={styles.outer}
+          style={sample1Styles.outer}
           removeClippedSubviews={true}>
           <ClippableView
             clippableViewID="inner1"
-            style={[styles.inner, styles.inner1]}
+            style={[sample1Styles.inner, sample1Styles.inner1]}
           />
           <ClippableView
             clippableViewID="inner2"
-            style={[styles.inner, styles.inner2]}
+            style={[sample1Styles.inner, sample1Styles.inner2]}
           />
           <ClippableView
             clippableViewID="inner3"
-            style={[styles.inner, styles.inner3]}
+            style={[sample1Styles.inner, sample1Styles.inner3]}
           />
           <ClippableView
             clippableViewID="inner4"
-            style={[styles.inner, styles.inner4]}
+            style={[sample1Styles.inner, sample1Styles.inner4]}
           />
           <ClippableView
             clippableViewID="inner5"
-            style={[styles.inner, styles.inner5]}
+            style={[sample1Styles.inner, sample1Styles.inner5]}
           />
         </ClippableView>
       </View>
@@ -54,7 +53,7 @@ class ClippingSample1 extends React.Component {
   }
 }
 
-var sample1Styles = StyleSheet.create({
+const sample1Styles = StyleSheet.create({
   outer: {
     width: 200,
     height: 200,
@@ -90,32 +89,31 @@ var sample1Styles = StyleSheet.create({
 
 class ClippingSample2 extends React.Component {
   render() {
-    var styles = sample2Styles;
     return (
       <View>
         <ClippableView
           clippableViewID="outer"
-          style={styles.outer}
+          style={sample2Styles.outer}
           removeClippedSubviews={true}>
           <ClippableView
             clippableViewID="complexInner"
-            style={styles.complexInner}
+            style={sample2Styles.complexInner}
             removeClippedSubviews={true}>
             <ClippableView
               clippableViewID="inner1"
-              style={[styles.inner, styles.inner1]}
+              style={[sample2Styles.inner, sample2Styles.inner1]}
             />
             <ClippableView
               clippableViewID="inner2"
-              style={[styles.inner, styles.inner2]}
+              style={[sample2Styles.inner, sample2Styles.inner2]}
             />
             <ClippableView
               clippableViewID="inner3"
-              style={[styles.inner, styles.inner3]}
+              style={[sample2Styles.inner, sample2Styles.inner3]}
             />
             <ClippableView
               clippableViewID="inner4"
-              style={[styles.inner, styles.inner4]}
+              style={[sample2Styles.inner, sample2Styles.inner4]}
             />
           </ClippableView>
         </ClippableView>
@@ -124,7 +122,7 @@ class ClippingSample2 extends React.Component {
   }
 }
 
-var sample2Styles = StyleSheet.create({
+const sample2Styles = StyleSheet.create({
   outer: {
     width: 200,
     height: 200,
@@ -164,17 +162,21 @@ var sample2Styles = StyleSheet.create({
 
 class UpdatingSample1 extends React.Component {
   render() {
-    var styles = updating1Styles;
-    var inner1Styles = [
-      styles.inner1,
+    const inner1Styles = [
+      updating1Styles.inner1,
       {height: this.props.update1 ? 200 : 100},
     ];
-    var inner2Styles = [styles.inner2, {top: this.props.update2 ? 200 : 50}];
+
+    const inner2Styles = [
+      updating1Styles.inner2,
+      {top: this.props.update2 ? 200 : 50},
+    ];
+
     return (
       <View>
         <ClippableView
           clippableViewID="outer"
-          style={styles.outer}
+          style={updating1Styles.outer}
           removeClippedSubviews={true}>
           <ClippableView clippableViewID="inner1" style={inner1Styles} />
           <ClippableView clippableViewID="inner2" style={inner2Styles} />
@@ -184,7 +186,7 @@ class UpdatingSample1 extends React.Component {
   }
 }
 
-var updating1Styles = StyleSheet.create({
+const updating1Styles = StyleSheet.create({
   outer: {
     width: 200,
     height: 200,
@@ -210,22 +212,28 @@ var updating1Styles = StyleSheet.create({
 
 class UpdatingSample2 extends React.Component {
   render() {
-    var styles = updating2Styles;
-    var outerStyles = [styles.outer, {height: this.props.update ? 200 : 100}];
+    const outerStyles = [
+      updating2Styles.outer,
+      {height: this.props.update ? 200 : 100},
+    ];
+
     return (
       <View>
         <ClippableView
           clippableViewID="outer"
           style={outerStyles}
           removeClippedSubviews={true}>
-          <ClippableView clippableViewID="inner" style={styles.inner} />
+          <ClippableView
+            clippableViewID="inner"
+            style={updating2Styles.inner}
+          />
         </ClippableView>
       </View>
     );
   }
 }
 
-var updating2Styles = StyleSheet.create({
+const updating2Styles = StyleSheet.create({
   outer: {
     width: 100,
     height: 100,
@@ -242,23 +250,32 @@ var updating2Styles = StyleSheet.create({
 
 class ScrollViewTest extends React.Component {
   render() {
-    var styles = scrollTestStyles;
-    var children = [];
-    for (var i = 0; i < 4; i++) {
+    const children = [];
+    for (let i = 0; i < 4; i++) {
       children[i] = (
-        <ClippableView key={i} style={styles.row} clippableViewID={'' + i} />
+        <ClippableView
+          key={i}
+          style={scrollTestStyles.row}
+          clippableViewID={'' + i}
+        />
       );
     }
-    for (var i = 4; i < 6; i++) {
-      var viewID = 'C' + (i - 4);
+    for (let i = 4; i < 6; i++) {
+      const viewID = 'C' + (i - 4);
       children[i] = (
         <ClippableView
           key={i}
-          style={styles.complex}
+          style={scrollTestStyles.complex}
           clippableViewID={viewID}
           removeClippedSubviews={true}>
-          <ClippableView style={styles.inner} clippableViewID={viewID + '.1'} />
-          <ClippableView style={styles.inner} clippableViewID={viewID + '.2'} />
+          <ClippableView
+            style={scrollTestStyles.inner}
+            clippableViewID={viewID + '.1'}
+          />
+          <ClippableView
+            style={scrollTestStyles.inner}
+            clippableViewID={viewID + '.2'}
+          />
         </ClippableView>
       );
     }
@@ -266,7 +283,7 @@ class ScrollViewTest extends React.Component {
     return (
       <ScrollView
         removeClippedSubviews={true}
-        style={styles.scrollView}
+        style={scrollTestStyles.scrollView}
         testID="scroll_view">
         {children}
       </ScrollView>
@@ -274,7 +291,7 @@ class ScrollViewTest extends React.Component {
   }
 }
 
-var scrollTestStyles = StyleSheet.create({
+const scrollTestStyles = StyleSheet.create({
   scrollView: {
     width: 200,
     height: 300,
@@ -303,7 +320,7 @@ var scrollTestStyles = StyleSheet.create({
   },
 });
 
-var appInstance = null;
+let appInstance = null;
 
 class SubviewsClippingTestApp extends React.Component {
   state = {};
@@ -317,12 +334,12 @@ class SubviewsClippingTestApp extends React.Component {
   };
 
   render() {
-    var component = this.state.component;
+    const component = this.state.component;
     return <View>{component}</View>;
   }
 }
 
-var SubviewsClippingTestModule = {
+const SubviewsClippingTestModule = {
   App: SubviewsClippingTestApp,
   renderClippingSample1: function() {
     appInstance.setComponent(<ClippingSample1 />);
diff --git a/ReactAndroid/src/androidTest/js/SwipeRefreshLayoutTestModule.js b/ReactAndroid/src/androidTest/js/SwipeRefreshLayoutTestModule.js
index 0bd3fabf20080f..d52433bfa78619 100644
--- a/ReactAndroid/src/androidTest/js/SwipeRefreshLayoutTestModule.js
+++ b/ReactAndroid/src/androidTest/js/SwipeRefreshLayoutTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,15 +9,16 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var RecordingModule = require('NativeModules')
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const RecordingModule = require('NativeModules')
   .SwipeRefreshLayoutRecordingModule;
-var ScrollView = require('ScrollView');
-var RefreshControl = require('RefreshControl');
-var Text = require('Text');
-var TouchableWithoutFeedback = require('TouchableWithoutFeedback');
-var View = require('View');
+const ScrollView = require('ScrollView');
+const StyleSheet = require('StyleSheet');
+const RefreshControl = require('RefreshControl');
+const Text = require('Text');
+const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
+const View = require('View');
 
 class Row extends React.Component {
   state = {
@@ -39,7 +40,7 @@ class Row extends React.Component {
   };
 }
 
-var app = null;
+let app = null;
 
 class SwipeRefreshLayoutTestApp extends React.Component {
   state = {
@@ -51,16 +52,16 @@ class SwipeRefreshLayoutTestApp extends React.Component {
   }
 
   render() {
-    var rows = [];
-    for (var i = 0; i < this.state.rows; i++) {
+    const rows = [];
+    for (let i = 0; i < this.state.rows; i++) {
       rows.push(<Row key={i} />);
     }
     return (
       <ScrollView
-        style={{flex: 1}}
+        style={styles.container}
         refreshControl={
           <RefreshControl
-            style={{flex: 1}}
+            style={styles.content}
             refreshing={false}
             onRefresh={() => RecordingModule.onRefresh()}
           />
@@ -71,7 +72,7 @@ class SwipeRefreshLayoutTestApp extends React.Component {
   }
 }
 
-var SwipeRefreshLayoutTestModule = {
+const SwipeRefreshLayoutTestModule = {
   SwipeRefreshLayoutTestApp,
   setRows: function(rows) {
     if (app != null) {
@@ -85,4 +86,13 @@ BatchedBridge.registerCallableModule(
   SwipeRefreshLayoutTestModule,
 );
 
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+  },
+  content: {
+    flex: 1,
+  },
+});
+
 module.exports = SwipeRefreshLayoutTestModule;
diff --git a/ReactAndroid/src/androidTest/js/TestBundle.js b/ReactAndroid/src/androidTest/js/TestBundle.js
index 59da7e6695b842..6e910054742650 100644
--- a/ReactAndroid/src/androidTest/js/TestBundle.js
+++ b/ReactAndroid/src/androidTest/js/TestBundle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -32,9 +32,14 @@ require('TextInputTestModule');
 require('TimePickerDialogTestModule');
 
 // Define catalyst test apps used in integration tests
-var AppRegistry = require('AppRegistry');
+const AppRegistry = require('AppRegistry');
 
-var apps = [
+const apps = [
+  {
+    appKey: 'AnimatedTransformTestApp',
+    component: () =>
+      require('AnimatedTransformTestModule').AnimatedTransformTestApp,
+  },
   {
     appKey: 'CatalystRootViewTestApp',
     component: () =>
@@ -54,6 +59,14 @@ var apps = [
     component: () =>
       require('ScrollViewTestModule').HorizontalScrollViewTestApp,
   },
+  {
+    appKey: 'ImageOverlayColorTestApp',
+    component: () => require('ImageOverlayColorTestApp'),
+  },
+  {
+    appKey: 'ImageErrorTestApp',
+    component: () => require('ImageErrorTestApp'),
+  },
   {
     appKey: 'InitialPropsTestApp',
     component: () => require('InitialPropsTestApp'),
diff --git a/ReactAndroid/src/androidTest/js/TestIdTestModule.js b/ReactAndroid/src/androidTest/js/TestIdTestModule.js
index 5b045d38fbaa43..1d493d81cc8bcf 100644
--- a/ReactAndroid/src/androidTest/js/TestIdTestModule.js
+++ b/ReactAndroid/src/androidTest/js/TestIdTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,17 +9,16 @@
 
 'use strict';
 
-var Image = require('Image');
-var React = require('React');
-var StyleSheet = require('StyleSheet');
-var Switch = require('Switch');
-var Text = require('Text');
-var TextInput = require('TextInput');
-var TouchableBounce = require('TouchableBounce');
-var TouchableHighlight = require('TouchableHighlight');
-var TouchableOpacity = require('TouchableOpacity');
-var TouchableWithoutFeedback = require('TouchableWithoutFeedback');
-var View = require('View');
+const Image = require('Image');
+const React = require('React');
+const StyleSheet = require('StyleSheet');
+const Text = require('Text');
+const TextInput = require('TextInput');
+const TouchableBounce = require('TouchableBounce');
+const TouchableHighlight = require('TouchableHighlight');
+const TouchableOpacity = require('TouchableOpacity');
+const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
+const View = require('View');
 
 /**
  * All the views implemented on Android, each with the testID property set.
@@ -73,7 +72,7 @@ class TestIdTestApp extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   base: {
     width: 150,
     height: 50,
diff --git a/ReactAndroid/src/androidTest/js/TestJSLocaleModule.js b/ReactAndroid/src/androidTest/js/TestJSLocaleModule.js
index 9a5915396d1f2b..9b57149bbc7d37 100644
--- a/ReactAndroid/src/androidTest/js/TestJSLocaleModule.js
+++ b/ReactAndroid/src/androidTest/js/TestJSLocaleModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,10 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var Recording = require('NativeModules').Recording;
+const BatchedBridge = require('BatchedBridge');
+const Recording = require('NativeModules').Recording;
 
-var TestJSLocaleModule = {
+const TestJSLocaleModule = {
   toUpper: function(s) {
     Recording.record(s.toUpperCase());
   },
diff --git a/ReactAndroid/src/androidTest/js/TestJSToJavaParametersModule.js b/ReactAndroid/src/androidTest/js/TestJSToJavaParametersModule.js
index ec31e15cb55f23..5d622af4cb49f7 100644
--- a/ReactAndroid/src/androidTest/js/TestJSToJavaParametersModule.js
+++ b/ReactAndroid/src/androidTest/js/TestJSToJavaParametersModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,10 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var Recording = require('NativeModules').Recording;
+const BatchedBridge = require('BatchedBridge');
+const Recording = require('NativeModules').Recording;
 
-var TestJSToJavaParametersModule = {
+const TestJSToJavaParametersModule = {
   returnBasicTypes: function() {
     Recording.receiveBasicTypes('foo', 3.14, true, null);
   },
diff --git a/ReactAndroid/src/androidTest/js/TestJavaToJSArgumentsModule.js b/ReactAndroid/src/androidTest/js/TestJavaToJSArgumentsModule.js
index d112ff213d025c..347258ff332c0b 100644
--- a/ReactAndroid/src/androidTest/js/TestJavaToJSArgumentsModule.js
+++ b/ReactAndroid/src/androidTest/js/TestJavaToJSArgumentsModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,14 +9,14 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var {assertEquals, assertTrue} = require('Asserts');
+const BatchedBridge = require('BatchedBridge');
+const {assertEquals, assertTrue} = require('Asserts');
 
 function strictStringCompare(a, b) {
   if (typeof a !== 'string' || typeof b !== 'string' || a.length !== b.length) {
     return false;
   }
-  for (var i = 0; i < a.length; i++) {
+  for (let i = 0; i < a.length; i++) {
     if (a.charCodeAt(i) !== b.charCodeAt(i)) {
       return false;
     }
@@ -28,7 +28,7 @@ function assertStrictStringEquals(a, b) {
   assertTrue(strictStringCompare(a, b), 'Expected: ' + a + ', received: ' + b);
 }
 
-var TestJavaToJSArgumentsModule = {
+const TestJavaToJSArgumentsModule = {
   receiveBasicTypes: function(str, dbl, bool, null_arg) {
     assertEquals('foo', str);
     assertEquals(3.14, dbl);
@@ -45,15 +45,15 @@ var TestJavaToJSArgumentsModule = {
   receiveNestedArray: function(arr) {
     assertEquals(2, arr.length);
     assertEquals('level1', arr[0]);
-    var arr2 = arr[1];
+    const arr2 = arr[1];
     assertEquals('level2', arr2[0]);
-    var arr3 = arr2[1];
+    const arr3 = arr2[1];
     assertEquals('level3', arr3[0]);
   },
   receiveArrayWithMaps: function(arr) {
     assertEquals(2, arr.length);
-    var m1 = arr[0];
-    var m2 = arr[1];
+    const m1 = arr[0];
+    const m2 = arr[1];
     assertEquals('m1v1', m1.m1k1);
     assertEquals('m1v2', m1.m1k2);
     assertEquals('m2v1', m2.m2k1);
@@ -65,12 +65,12 @@ var TestJavaToJSArgumentsModule = {
     assertEquals(null, map.nullKey);
   },
   receiveNestedMap: function(map) {
-    var nestedMap = map.nestedMap;
+    const nestedMap = map.nestedMap;
     assertEquals('foxes', nestedMap.animals);
   },
   receiveMapWithArrays: function(map) {
-    var a1 = map.array1;
-    var a2 = map.array2;
+    const a1 = map.array1;
+    const a2 = map.array2;
     assertEquals(3, a1.length);
     assertEquals(2, a2.length);
     assertEquals(3, a1[0]);
diff --git a/ReactAndroid/src/androidTest/js/TestJavaToJSReturnValuesModule.js b/ReactAndroid/src/androidTest/js/TestJavaToJSReturnValuesModule.js
index e21f8600cbf45c..528861a7208dca 100644
--- a/ReactAndroid/src/androidTest/js/TestJavaToJSReturnValuesModule.js
+++ b/ReactAndroid/src/androidTest/js/TestJavaToJSReturnValuesModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,7 @@ const BatchedBridge = require('BatchedBridge');
 const {assertEquals, assertTrue} = require('Asserts');
 const {TestModule} = require('NativeModules');
 
-var TestJavaToJSReturnValuesModule = {
+const TestJavaToJSReturnValuesModule = {
   callMethod: function(methodName, expectedType, expectedJSON) {
     const result = TestModule[methodName]();
     assertEquals(expectedType, typeof result);
diff --git a/ReactAndroid/src/androidTest/js/TextInputTestModule.js b/ReactAndroid/src/androidTest/js/TextInputTestModule.js
index 48d29344de316e..cf7c52791c68a6 100644
--- a/ReactAndroid/src/androidTest/js/TextInputTestModule.js
+++ b/ReactAndroid/src/androidTest/js/TextInputTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,16 +9,16 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var StyleSheet = require('StyleSheet');
-var Text = require('Text');
-var TextInput = require('TextInput');
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const StyleSheet = require('StyleSheet');
+const Text = require('Text');
+const TextInput = require('TextInput');
+const View = require('View');
 
-var Recording = require('NativeModules').Recording;
+const Recording = require('NativeModules').Recording;
 
-var app;
+let app;
 
 class TokenizedTextExample extends React.Component {
   constructor(props) {
@@ -122,18 +122,18 @@ class TextInputTestApp extends React.Component {
         />
         <TextInput
           ref="textInput4"
-          style={[styles.textInput, {color: '#00ff00'}]}
+          style={[styles.textInput, styles.textInputColor]}
           testID="textInput4"
         />
         <TextInput
           ref="textInput5"
-          style={[styles.textInput, {color: '#00ff00'}]}
+          style={[styles.textInput, styles.textInputColor]}
           defaultValue=""
           testID="textInput5"
         />
         <TextInput
           ref="textInput6"
-          style={[styles.textInput, {color: '#00ff00'}]}
+          style={[styles.textInput, styles.textInputColor]}
           defaultValue="Text"
           testID="textInput6"
         />
@@ -149,7 +149,7 @@ class TextInputTestApp extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     padding: 5,
     margin: 10,
@@ -166,9 +166,12 @@ var styles = StyleSheet.create({
     color: 'blue',
     fontWeight: 'bold',
   },
+  textInputColor: {
+    marginLeft: 20,
+  },
 });
 
-var TextInputTestModule = {
+const TextInputTestModule = {
   TextInputTestApp,
   setValueRef: function(ref, value) {
     app.refs[ref].setNativeProps({
diff --git a/ReactAndroid/src/androidTest/js/TimePickerDialogTestModule.js b/ReactAndroid/src/androidTest/js/TimePickerDialogTestModule.js
index 5db19b67e45bd5..754ae7f28dec40 100644
--- a/ReactAndroid/src/androidTest/js/TimePickerDialogTestModule.js
+++ b/ReactAndroid/src/androidTest/js/TimePickerDialogTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,12 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var TimePickerAndroid = require('TimePickerAndroid');
-var React = require('React');
-var RecordingModule = require('NativeModules').TimePickerDialogRecordingModule;
-var View = require('View');
+const BatchedBridge = require('BatchedBridge');
+const TimePickerAndroid = require('TimePickerAndroid');
+const React = require('React');
+const RecordingModule = require('NativeModules')
+  .TimePickerDialogRecordingModule;
+const View = require('View');
 
 class TimePickerDialogTestApp extends React.Component {
   render() {
@@ -21,7 +22,7 @@ class TimePickerDialogTestApp extends React.Component {
   }
 }
 
-var TimePickerDialogTestModule = {
+const TimePickerDialogTestModule = {
   TimePickerDialogTestApp: TimePickerDialogTestApp,
   showTimePickerDialog: function(options) {
     TimePickerAndroid.open(options).then(
diff --git a/ReactAndroid/src/androidTest/js/TouchBubblingTestAppModule.js b/ReactAndroid/src/androidTest/js/TouchBubblingTestAppModule.js
index 4ae71bf70f2cdb..e3c089e2acca6a 100644
--- a/ReactAndroid/src/androidTest/js/TouchBubblingTestAppModule.js
+++ b/ReactAndroid/src/androidTest/js/TouchBubblingTestAppModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,12 +9,12 @@
 
 'use strict';
 
-var Recording = require('NativeModules').Recording;
+const Recording = require('NativeModules').Recording;
 
-var React = require('React');
-var StyleSheet = require('StyleSheet');
-var View = require('View');
-var TouchableWithoutFeedback = require('TouchableWithoutFeedback');
+const React = require('React');
+const StyleSheet = require('StyleSheet');
+const View = require('View');
+const TouchableWithoutFeedback = require('TouchableWithoutFeedback');
 
 class TouchBubblingTestApp extends React.Component {
   handlePress = record => {
@@ -48,7 +48,7 @@ class TouchBubblingTestApp extends React.Component {
   }
 }
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flexDirection: 'column',
     backgroundColor: '#ccdd44',
diff --git a/ReactAndroid/src/androidTest/js/UIManagerTestModule.js b/ReactAndroid/src/androidTest/js/UIManagerTestModule.js
index 33d1d3aca1b029..5e0613c0d49e4f 100644
--- a/ReactAndroid/src/androidTest/js/UIManagerTestModule.js
+++ b/ReactAndroid/src/androidTest/js/UIManagerTestModule.js
@@ -1,224 +1,267 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
  * @format
+ * @flow
  */
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var StyleSheet = require('StyleSheet');
-var View = require('View');
-var Text = require('Text');
-
-var createReactClass = require('create-react-class');
-var renderApplication = require('renderApplication');
-
-var FlexTestApp = createReactClass({
-  displayName: 'FlexTestApp',
-  _styles: StyleSheet.create({
-    container: {
-      width: 200,
-      height: 200,
-      flexDirection: 'row',
-    },
-    child: {
-      flex: 1,
-    },
-    absolute: {
-      position: 'absolute',
-      top: 15,
-      left: 10,
-      width: 50,
-      height: 60,
-    },
-  }),
-  render: function() {
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const StyleSheet = require('StyleSheet');
+const View = require('View');
+const Text = require('Text');
+
+const renderApplication = require('renderApplication');
+
+type FlexTestAppProps = $ReadOnly<{||}>;
+class FlexTestApp extends React.Component<FlexTestAppProps> {
+  render() {
     return (
       <View
-        style={this._styles.container}
+        style={FlexTestAppStyles.container}
         testID="container"
         collapsable={false}>
         <View
-          style={[this._styles.child, {backgroundColor: '#ff0000'}]}
+          style={[FlexTestAppStyles.child, FlexTestAppStyles.bgRed]}
           collapsable={false}
         />
         <View
-          style={[this._styles.child, {backgroundColor: '#0000ff'}]}
+          style={[FlexTestAppStyles.child, FlexTestAppStyles.bgBlue]}
           collapsable={false}
         />
       </View>
     );
+  }
+}
+
+const FlexTestAppStyles = StyleSheet.create({
+  container: {
+    width: 200,
+    height: 200,
+    flexDirection: 'row',
+  },
+  child: {
+    flex: 1,
+  },
+  bgRed: {
+    backgroundColor: '#ff0000',
+  },
+  bgBlue: {
+    backgroundColor: '#0000ff',
   },
 });
 
-var FlexWithText = createReactClass({
-  displayName: 'FlexWithText',
-  _styles: StyleSheet.create({
-    container: {
-      flexDirection: 'column',
-      margin: 20,
-    },
-    row: {
-      flexDirection: 'row',
-      alignItems: 'flex-end',
-      height: 300,
-    },
-    inner: {
-      flex: 1,
-      margin: 10,
-    },
-  }),
-  render: function() {
+type FlexWithTextProps = $ReadOnly<{||}>;
+class FlexWithText extends React.Component<FlexWithTextProps> {
+  render() {
     return (
       <View
-        style={this._styles.container}
+        style={FlexWithTextStyles.container}
         testID="container"
         collapsable={false}>
-        <View style={this._styles.row} collapsable={false}>
-          <Text style={this._styles.inner}>Hello</Text>
-          <Text style={this._styles.inner}>World</Text>
+        <View style={FlexWithTextStyles.row} collapsable={false}>
+          <Text style={FlexWithTextStyles.inner}>Hello</Text>
+          <Text style={FlexWithTextStyles.inner}>World</Text>
         </View>
       </View>
     );
+  }
+}
+
+const FlexWithTextStyles = StyleSheet.create({
+  container: {
+    flexDirection: 'column',
+    margin: 20,
+  },
+  row: {
+    flexDirection: 'row',
+    alignItems: 'flex-end',
+    height: 300,
+  },
+  inner: {
+    flex: 1,
+    margin: 10,
   },
 });
 
-var AbsolutePositionTestApp = createReactClass({
-  displayName: 'AbsolutePositionTestApp',
-  _styles: StyleSheet.create({
-    absolute: {
-      position: 'absolute',
-      top: 15,
-      left: 10,
-      width: 50,
-      height: 60,
-    },
-  }),
-  render: function() {
+type AbsolutePositionTestAppProps = $ReadOnly<{||}>;
+class AbsolutePositionTestApp extends React.Component<
+  AbsolutePositionTestAppProps,
+> {
+  render() {
     return (
       <View
-        style={this._styles.absolute}
+        style={AbsolutePositionTestAppStyles.absolute}
         testID="absolute"
         collapsable={false}
       />
     );
+  }
+}
+
+const AbsolutePositionTestAppStyles = StyleSheet.create({
+  absolute: {
+    position: 'absolute',
+    top: 15,
+    left: 10,
+    width: 50,
+    height: 60,
   },
 });
 
-var AbsolutePositionBottomRightTestApp = createReactClass({
-  displayName: 'AbsolutePositionBottomRightTestApp',
-  _styles: StyleSheet.create({
-    container: {
-      width: 100,
-      height: 100,
-    },
-    absolute: {
-      position: 'absolute',
-      bottom: 15,
-      right: 10,
-      width: 50,
-      height: 60,
-    },
-  }),
-  render: function() {
+type AbsolutePositionBottomRightTestAppProps = $ReadOnly<{||}>;
+class AbsolutePositionBottomRightTestApp extends React.Component<
+  AbsolutePositionBottomRightTestAppProps,
+> {
+  render() {
     return (
       <View
-        style={this._styles.container}
+        style={AbsolutePositionBottomRightTestAppStyles.container}
         testID="container"
         collapsable={false}>
-        <View style={this._styles.absolute} collapsable={false} />
+        <View
+          style={AbsolutePositionBottomRightTestAppStyles.absolute}
+          collapsable={false}
+        />
       </View>
     );
+  }
+}
+
+const AbsolutePositionBottomRightTestAppStyles = StyleSheet.create({
+  container: {
+    width: 100,
+    height: 100,
+  },
+  absolute: {
+    position: 'absolute',
+    bottom: 15,
+    right: 10,
+    width: 50,
+    height: 60,
   },
 });
 
-var CenteredTextView = createReactClass({
-  displayName: 'CenteredTextView',
-  _styles: StyleSheet.create({
-    parent: {
-      width: 200,
-      height: 100,
-      backgroundColor: '#aa3311',
-      justifyContent: 'center',
-      alignItems: 'center',
-    },
-    text: {
-      fontSize: 15,
-      color: '#672831',
-    },
-  }),
-  render: function() {
+type CenteredTextViewProps = $ReadOnly<{|
+  text?: ?string,
+|}>;
+class CenteredTextView extends React.Component<CenteredTextViewProps> {
+  render() {
     return (
       <View collapsable={false}>
-        <View style={this._styles.parent} collapsable={false}>
-          <Text style={this._styles.text} testID="text">
+        <View style={CenteredTextViewStyles.parent} collapsable={false}>
+          <Text style={CenteredTextViewStyles.text} testID="text">
             {this.props.text}
           </Text>
         </View>
       </View>
     );
+  }
+}
+
+const CenteredTextViewStyles = StyleSheet.create({
+  parent: {
+    width: 200,
+    height: 100,
+    backgroundColor: '#aa3311',
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  text: {
+    fontSize: 15,
+    color: '#672831',
   },
 });
 
-var flushUpdatePositionInList = null;
-var UpdatePositionInListTestApp = createReactClass({
-  displayName: 'UpdatePositionInListTestApp',
-  _styles: StyleSheet.create({
-    element: {
-      height: 10,
-    },
-    active: {
-      height: 50,
-    },
-  }),
-  getInitialState: function() {
+let flushUpdatePositionInList = null;
+
+type UpdatePositionInListTestAppProps = $ReadOnly<{||}>;
+type UpdatePositionInListTestAppState = {|
+  active: boolean,
+|};
+class UpdatePositionInListTestApp extends React.Component<
+  UpdatePositionInListTestAppProps,
+  UpdatePositionInListTestAppState,
+> {
+  state = {
+    active: false,
+  };
+
+  constructor(...args) {
+    super(...args);
     flushUpdatePositionInList = () => this.setState({active: true});
-    return {active: false};
-  },
-  render: function() {
+  }
+
+  render() {
     return (
       <View collapsable={false} testID="container">
-        <View style={this._styles.element} collapsable={false} />
+        <View
+          style={UpdatePositionInListTestAppStyles.element}
+          collapsable={false}
+        />
         <View
           style={[
-            this._styles.element,
-            this.state.active && this._styles.active,
+            UpdatePositionInListTestAppStyles.element,
+            this.state.active && UpdatePositionInListTestAppStyles.active,
           ]}
           collapsable={false}
         />
-        <View style={this._styles.element} collapsable={false} />
+        <View
+          style={UpdatePositionInListTestAppStyles.element}
+          collapsable={false}
+        />
       </View>
     );
+  }
+}
+
+const UpdatePositionInListTestAppStyles = StyleSheet.create({
+  element: {
+    height: 10,
+  },
+  active: {
+    height: 50,
   },
 });
 
-var UIManagerTestModule = {
-  renderFlexTestApplication: function(rootTag) {
-    renderApplication(FlexTestApp, {}, rootTag);
+/**
+ * This is a workaround for the following flow problem:
+ *
+ *   const emptyObject: {||} = {}; // Raises error
+ *
+ * @see https://github.com/facebook/flow/issues/2977
+ */
+const emptyExactProps = Object.freeze({});
+
+const UIManagerTestModule = {
+  renderFlexTestApplication(rootTag: number) {
+    renderApplication(FlexTestApp, emptyExactProps, rootTag);
   },
-  renderFlexWithTextApplication: function(rootTag) {
-    renderApplication(FlexWithText, {}, rootTag);
+  renderFlexWithTextApplication(rootTag: number) {
+    renderApplication(FlexWithText, emptyExactProps, rootTag);
   },
-  renderAbsolutePositionBottomRightTestApplication: function(rootTag) {
-    renderApplication(AbsolutePositionBottomRightTestApp, {}, rootTag);
+  renderAbsolutePositionBottomRightTestApplication(rootTag: number) {
+    renderApplication(
+      AbsolutePositionBottomRightTestApp,
+      emptyExactProps,
+      rootTag,
+    );
   },
-  renderAbsolutePositionTestApplication: function(rootTag) {
-    renderApplication(AbsolutePositionTestApp, {}, rootTag);
+  renderAbsolutePositionTestApplication(rootTag: number) {
+    renderApplication(AbsolutePositionTestApp, emptyExactProps, rootTag);
   },
-  renderCenteredTextViewTestApplication: function(rootTag, text) {
+  renderCenteredTextViewTestApplication(rootTag: number, text: string) {
     renderApplication(CenteredTextView, {text: text}, rootTag);
   },
-  renderUpdatePositionInListTestApplication: function(rootTag) {
-    renderApplication(UpdatePositionInListTestApp, {}, rootTag);
-  },
-  flushUpdatePositionInList: function() {
-    flushUpdatePositionInList();
+  renderUpdatePositionInListTestApplication(rootTag: number) {
+    renderApplication(UpdatePositionInListTestApp, emptyExactProps, rootTag);
   },
+  flushUpdatePositionInList,
 };
 
 BatchedBridge.registerCallableModule(
diff --git a/ReactAndroid/src/androidTest/js/ViewRenderingTestModule.js b/ReactAndroid/src/androidTest/js/ViewRenderingTestModule.js
index c2215318a52f41..8d8f3c244379cb 100644
--- a/ReactAndroid/src/androidTest/js/ViewRenderingTestModule.js
+++ b/ReactAndroid/src/androidTest/js/ViewRenderingTestModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,20 +9,12 @@
 
 'use strict';
 
-var BatchedBridge = require('BatchedBridge');
-var React = require('React');
-var View = require('View');
-var StyleSheet = require('StyleSheet');
-
-var renderApplication = require('renderApplication');
-
-var styles = StyleSheet.create({
-  view: {
-    opacity: 0.75,
-    backgroundColor: 'rgb(255, 0, 0)',
-  },
-});
+const BatchedBridge = require('BatchedBridge');
+const React = require('React');
+const View = require('View');
+const StyleSheet = require('StyleSheet');
 
+const renderApplication = require('renderApplication');
 class ViewSampleApp extends React.Component {
   state = {};
 
@@ -31,7 +23,7 @@ class ViewSampleApp extends React.Component {
   }
 }
 
-var updateMargins;
+let updateMargins;
 
 class MarginSampleApp extends React.Component {
   state = {margin: 10};
@@ -40,7 +32,7 @@ class MarginSampleApp extends React.Component {
     updateMargins = this.setState.bind(this, {margin: 15});
     return (
       <View
-        style={{margin: this.state.margin, marginLeft: 20}}
+        style={[{margin: this.state.margin}, styles.marginSample]}
         collapsable={false}
       />
     );
@@ -50,13 +42,8 @@ class MarginSampleApp extends React.Component {
 class BorderSampleApp extends React.Component {
   render() {
     return (
-      <View
-        style={{borderLeftWidth: 20, borderWidth: 5, backgroundColor: 'blue'}}
-        collapsable={false}>
-        <View
-          style={{backgroundColor: 'red', width: 20, height: 20}}
-          collapsable={false}
-        />
+      <View style={styles.borderSample} collapsable={false}>
+        <View style={styles.borderSampleContent} collapsable={false} />
       </View>
     );
   }
@@ -64,7 +51,7 @@ class BorderSampleApp extends React.Component {
 
 class TransformSampleApp extends React.Component {
   render() {
-    var style = {
+    const style = {
       transform: [
         {translateX: 20},
         {translateY: 25},
@@ -77,7 +64,7 @@ class TransformSampleApp extends React.Component {
   }
 }
 
-var ViewRenderingTestModule = {
+const ViewRenderingTestModule = {
   renderViewApplication: function(rootTag) {
     renderApplication(ViewSampleApp, {}, rootTag);
   },
@@ -100,4 +87,24 @@ BatchedBridge.registerCallableModule(
   ViewRenderingTestModule,
 );
 
+const styles = StyleSheet.create({
+  view: {
+    opacity: 0.75,
+    backgroundColor: 'rgb(255, 0, 0)',
+  },
+  borderSample: {
+    borderLeftWidth: 20,
+    borderWidth: 5,
+    backgroundColor: 'blue',
+  },
+  borderSampleContent: {
+    backgroundColor: 'red',
+    width: 20,
+    height: 20,
+  },
+  marginSample: {
+    marginLeft: 20,
+  },
+});
+
 module.exports = ViewRenderingTestModule;
diff --git a/ReactAndroid/src/main/android_res/com/facebook/catalyst/appcompat/BUCK b/ReactAndroid/src/main/android_res/com/facebook/catalyst/appcompat/BUCK
index 868485a2b73cdc..d0d6a03da817d1 100644
--- a/ReactAndroid/src/main/android_res/com/facebook/catalyst/appcompat/BUCK
+++ b/ReactAndroid/src/main/android_res/com/facebook/catalyst/appcompat/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_resource")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_resource")
 
 # used by ReactToolbarManager because of Gradle
 # TODO t10182713 will be replaced with appcompat-orig when we stop using Gradle
diff --git a/ReactAndroid/src/main/java/com/facebook/BUCK b/ReactAndroid/src/main/java/com/facebook/BUCK
index bc03b864be0f16..46f5b18b63cae6 100644
--- a/ReactAndroid/src/main/java/com/facebook/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "yoga",
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/BUCK b/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/BUCK
index caed19622ab7db..a161001ec1cab1 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "model",
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/DebugOverlayTag.java b/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/DebugOverlayTag.java
index 07d2605717a68e..9a0347df7a5bc3 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/DebugOverlayTag.java
+++ b/ReactAndroid/src/main/java/com/facebook/debug/debugoverlay/model/DebugOverlayTag.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/holder/BUCK b/ReactAndroid/src/main/java/com/facebook/debug/holder/BUCK
index e28e0062d3e466..9212d5990f14dd 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/holder/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/debug/holder/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "holder",
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/holder/NoopPrinter.java b/ReactAndroid/src/main/java/com/facebook/debug/holder/NoopPrinter.java
index a7bba058310597..487375bc91ca01 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/holder/NoopPrinter.java
+++ b/ReactAndroid/src/main/java/com/facebook/debug/holder/NoopPrinter.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/holder/Printer.java b/ReactAndroid/src/main/java/com/facebook/debug/holder/Printer.java
index 4fcfc24ca6f172..8b7ffadbd9cb3f 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/holder/Printer.java
+++ b/ReactAndroid/src/main/java/com/facebook/debug/holder/Printer.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/holder/PrinterHolder.java b/ReactAndroid/src/main/java/com/facebook/debug/holder/PrinterHolder.java
index e0405a4b99c955..c73e8d94e8b8fb 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/holder/PrinterHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/debug/holder/PrinterHolder.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/tags/BUCK b/ReactAndroid/src/main/java/com/facebook/debug/tags/BUCK
index 85aaf21d912e88..1442e63d2acfdf 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/tags/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/debug/tags/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "tags",
diff --git a/ReactAndroid/src/main/java/com/facebook/debug/tags/ReactDebugOverlayTags.java b/ReactAndroid/src/main/java/com/facebook/debug/tags/ReactDebugOverlayTags.java
index 879743ce91a0df..877aa14c9c9a5e 100644
--- a/ReactAndroid/src/main/java/com/facebook/debug/tags/ReactDebugOverlayTags.java
+++ b/ReactAndroid/src/main/java/com/facebook/debug/tags/ReactDebugOverlayTags.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/BUCK b/ReactAndroid/src/main/java/com/facebook/jni/BUCK
index b0dee43c7991a2..33a2d0bf6a5b42 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/jni/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "jni",
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/Countable.java b/ReactAndroid/src/main/java/com/facebook/jni/Countable.java
index 342a6f01e28c2f..ba3216e0f0819d 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/Countable.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/Countable.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/CpuCapabilitiesJni.java b/ReactAndroid/src/main/java/com/facebook/jni/CpuCapabilitiesJni.java
index ce3ae8da14b980..d0df3db702ba51 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/CpuCapabilitiesJni.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/CpuCapabilitiesJni.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/DestructorThread.java b/ReactAndroid/src/main/java/com/facebook/jni/DestructorThread.java
index 3ae10379969d5d..38bc2e7d8480fa 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/DestructorThread.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/DestructorThread.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/HybridClassBase.java b/ReactAndroid/src/main/java/com/facebook/jni/HybridClassBase.java
index 3e39175c42f6d2..540c1ca5e05223 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/HybridClassBase.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/HybridClassBase.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/HybridData.java b/ReactAndroid/src/main/java/com/facebook/jni/HybridData.java
index ad4077e669c9f6..47a331e24c171a 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/HybridData.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/HybridData.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/IteratorHelper.java b/ReactAndroid/src/main/java/com/facebook/jni/IteratorHelper.java
index 928870d2bfc434..88e2de6353d39a 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/IteratorHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/IteratorHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/JniTerminateHandler.java b/ReactAndroid/src/main/java/com/facebook/jni/JniTerminateHandler.java
index eec0fbc1610b49..f48d639a8fe233 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/JniTerminateHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/JniTerminateHandler.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/MapIteratorHelper.java b/ReactAndroid/src/main/java/com/facebook/jni/MapIteratorHelper.java
index e50cd7d56bc150..e57cb9f173396b 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/MapIteratorHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/MapIteratorHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/NativeRunnable.java b/ReactAndroid/src/main/java/com/facebook/jni/NativeRunnable.java
index 34216a29c8ff54..10a2517a22391f 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/NativeRunnable.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/NativeRunnable.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/ThreadScopeSupport.java b/ReactAndroid/src/main/java/com/facebook/jni/ThreadScopeSupport.java
index 9490f87062c3dd..743724b1b5f366 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/ThreadScopeSupport.java
+++ b/ReactAndroid/src/main/java/com/facebook/jni/ThreadScopeSupport.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/jni/fbjni.pro b/ReactAndroid/src/main/java/com/facebook/jni/fbjni.pro
index 5b5b6454d32adf..09fad6a9e4ad87 100644
--- a/ReactAndroid/src/main/java/com/facebook/jni/fbjni.pro
+++ b/ReactAndroid/src/main/java/com/facebook/jni/fbjni.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # For common use cases for the hybrid pattern, keep symbols which may
 # be referenced only from C++.
 
diff --git a/ReactAndroid/src/main/java/com/facebook/perftest/BUCK b/ReactAndroid/src/main/java/com/facebook/perftest/BUCK
index bc3a5ab52c4935..974cfdbcd02591 100644
--- a/ReactAndroid/src/main/java/com/facebook/perftest/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/perftest/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library")
 
 rn_android_library(
     name = "perftest",
diff --git a/ReactAndroid/src/main/java/com/facebook/perftest/PerfTestConfig.java b/ReactAndroid/src/main/java/com/facebook/perftest/PerfTestConfig.java
index e8fef3b4299e77..7420ab0dce90f2 100644
--- a/ReactAndroid/src/main/java/com/facebook/perftest/PerfTestConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/perftest/PerfTestConfig.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/BUCK b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/BUCK
index 66cbb88e582182..d67d02d3b95d37 100644
--- a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library")
 
 rn_android_library(
     name = "annotations",
diff --git a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/DoNotStrip.java b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/DoNotStrip.java
index a2752bbb0f8a3c..e73cd266897e5d 100644
--- a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/DoNotStrip.java
+++ b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/DoNotStrip.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/KeepGettersAndSetters.java b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/KeepGettersAndSetters.java
index 4c261c5c9b27ea..127dd91ba6c503 100644
--- a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/KeepGettersAndSetters.java
+++ b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/KeepGettersAndSetters.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/proguard_annotations.pro b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/proguard_annotations.pro
index b1ef5f7ce94678..f9d4677e299ba8 100644
--- a/ReactAndroid/src/main/java/com/facebook/proguard/annotations/proguard_annotations.pro
+++ b/ReactAndroid/src/main/java/com/facebook/proguard/annotations/proguard_annotations.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 # Keep our interfaces so they can be used by other ProGuard rules.
 # See http://sourceforge.net/p/proguard/bugs/466/
 -keep,allowobfuscation @interface com.facebook.proguard.annotations.DoNotStrip
diff --git a/ReactAndroid/src/main/java/com/facebook/react/BUCK b/ReactAndroid/src/main/java/com/facebook/react/BUCK
index 743bb34bb69448..8f2c72e8c0454b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/BUCK
@@ -1,10 +1,11 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "react",
     srcs = glob(["*.java"]),
     provided_deps = [
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
+        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
     ],
     visibility = [
         "PUBLIC",
@@ -21,6 +22,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/common:common"),
         react_native_target("java/com/facebook/react/devsupport:devsupport"),
         react_native_target("java/com/facebook/react/devsupport:interfaces"),
+        react_native_target("java/com/facebook/react/jscexecutor:jscexecutor"),
         react_native_target("java/com/facebook/react/jstasks:jstasks"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
         react_native_target("java/com/facebook/react/module/model:model"),
@@ -33,6 +35,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/modules/systeminfo:systeminfo"),
         react_native_target("java/com/facebook/react/modules/toast:toast"),
         react_native_target("java/com/facebook/react/uimanager:uimanager"),
+        react_native_target("java/com/facebook/react/module/annotations:annotations"),
         react_native_target("java/com/facebook/react/views/imagehelper:imagehelper"),
     ],
     exported_deps = [
diff --git a/ReactAndroid/src/main/java/com/facebook/react/CompositeReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/CompositeReactPackage.java
index a824abcfb1a77a..af045b5a7e53d3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/CompositeReactPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/CompositeReactPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
  * directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/CoreModulesPackage.java b/ReactAndroid/src/main/java/com/facebook/react/CoreModulesPackage.java
index 1b3d4c10fa6f32..10260537294830 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/CoreModulesPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/CoreModulesPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,6 +26,7 @@
 import com.facebook.react.modules.debug.SourceCodeModule;
 import com.facebook.react.modules.deviceinfo.DeviceInfoModule;
 import com.facebook.react.modules.systeminfo.AndroidInfoModule;
+import com.facebook.react.uimanager.UIImplementationProvider;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.systrace.Systrace;
@@ -59,6 +60,7 @@
   CoreModulesPackage(
       ReactInstanceManager reactInstanceManager,
       DefaultHardwareBackBtnHandler hardwareBackBtnHandler,
+      @Nullable UIImplementationProvider uiImplementationProvider,
       boolean lazyViewManagersEnabled,
       int minTimeLeftInFrameForNonBatchedOperationMs) {
     mReactInstanceManager = reactInstanceManager;
@@ -71,7 +73,7 @@
   public List<ModuleSpec> getNativeModules(final ReactApplicationContext reactContext) {
     return Arrays.asList(
         ModuleSpec.nativeModuleSpec(
-            AndroidInfoModule.class,
+            AndroidInfoModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -79,7 +81,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            DeviceEventManagerModule.class,
+            DeviceEventManagerModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -87,7 +89,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            ExceptionsManagerModule.class,
+            ExceptionsManagerModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -95,7 +97,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            HeadlessJsTaskSupportModule.class,
+            HeadlessJsTaskSupportModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -103,7 +105,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            SourceCodeModule.class,
+            SourceCodeModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -111,7 +113,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            Timing.class,
+            Timing.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -119,7 +121,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            UIManagerModule.class,
+            UIManagerModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
@@ -127,7 +129,7 @@ public NativeModule get() {
               }
             }),
         ModuleSpec.nativeModuleSpec(
-            DeviceInfoModule.class,
+            DeviceInfoModule.NAME,
             new Provider<NativeModule>() {
               @Override
               public NativeModule get() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/DebugCorePackage.java b/ReactAndroid/src/main/java/com/facebook/react/DebugCorePackage.java
index 1de05ef8977a2f..1ecb2d5557d39f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/DebugCorePackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/DebugCorePackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/EagerModuleProvider.java b/ReactAndroid/src/main/java/com/facebook/react/EagerModuleProvider.java
index 9b429baa3a88b4..6af684d33b521e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/EagerModuleProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/EagerModuleProvider.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/HeadlessJsTaskService.java b/ReactAndroid/src/main/java/com/facebook/react/HeadlessJsTaskService.java
index 6bfac567bb2a04..8f84722bbb3849 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/HeadlessJsTaskService.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/HeadlessJsTaskService.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/LazyReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/LazyReactPackage.java
index e9b29db7cae34d..91394befee298b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/LazyReactPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/LazyReactPackage.java
@@ -1,14 +1,15 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react;
 
 import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
 
+import android.support.annotation.NonNull;
+import com.facebook.react.bridge.ModuleHolder;
 import com.facebook.react.bridge.ModuleSpec;
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -20,13 +21,14 @@
 import com.facebook.systrace.SystraceMessage;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
 /**
  * React package supporting lazy creation of native modules.
  *
- * TODO(t11394819): Make this default and deprecate ReactPackage
+ * <p>TODO(t11394819): Make this default and deprecate ReactPackage
  */
 public abstract class LazyReactPackage implements ReactPackage {
 
@@ -34,8 +36,9 @@ public static ReactModuleInfoProvider getReactModuleInfoProviderViaReflection(
       LazyReactPackage lazyReactPackage) {
     Class<?> reactModuleInfoProviderClass;
     try {
-      reactModuleInfoProviderClass = Class.forName(
-          lazyReactPackage.getClass().getCanonicalName() + "$$ReactModuleInfoProvider");
+      reactModuleInfoProviderClass =
+          Class.forName(
+              lazyReactPackage.getClass().getCanonicalName() + "$$ReactModuleInfoProvider");
     } catch (ClassNotFoundException e) {
       // In OSS case, when the annotation processor does not run, we fall back to non-lazy mode
       // For this, we simply return an empty moduleMap.
@@ -50,41 +53,99 @@ public Map<String, ReactModuleInfo> getReactModuleInfos() {
     }
 
     if (reactModuleInfoProviderClass == null) {
-      throw new RuntimeException("ReactModuleInfoProvider class for " +
-          lazyReactPackage.getClass().getCanonicalName() + " not found.");
+      throw new RuntimeException(
+          "ReactModuleInfoProvider class for "
+              + lazyReactPackage.getClass().getCanonicalName()
+              + " not found.");
     }
 
     try {
       return (ReactModuleInfoProvider) reactModuleInfoProviderClass.newInstance();
     } catch (InstantiationException e) {
       throw new RuntimeException(
-          "Unable to instantiate ReactModuleInfoProvider for " + lazyReactPackage.getClass(),
-          e);
+          "Unable to instantiate ReactModuleInfoProvider for " + lazyReactPackage.getClass(), e);
     } catch (IllegalAccessException e) {
       throw new RuntimeException(
-          "Unable to instantiate ReactModuleInfoProvider for " + lazyReactPackage.getClass(),
-          e);
+          "Unable to instantiate ReactModuleInfoProvider for " + lazyReactPackage.getClass(), e);
     }
   }
 
+  /**
+   * We return an iterable
+   *
+   * @param reactContext
+   * @return
+   */
+  /* package */
+  Iterable<ModuleHolder> getNativeModuleIterator(final ReactApplicationContext reactContext) {
+    final Map<String, ReactModuleInfo> reactModuleInfoMap =
+        getReactModuleInfoProvider().getReactModuleInfos();
+    final List<ModuleSpec> nativeModules = getNativeModules(reactContext);
+
+    return new Iterable<ModuleHolder>() {
+      @NonNull
+      @Override
+      public Iterator<ModuleHolder> iterator() {
+        return new Iterator<ModuleHolder>() {
+          int position = 0;
+
+          @Override
+          public ModuleHolder next() {
+            ModuleSpec moduleSpec = nativeModules.get(position++);
+            String name = moduleSpec.getName();
+            ReactModuleInfo reactModuleInfo = reactModuleInfoMap.get(name);
+            ModuleHolder moduleHolder;
+            if (reactModuleInfo == null) {
+              NativeModule module;
+              ReactMarker.logMarker(ReactMarkerConstants.CREATE_MODULE_START, name);
+              try {
+                module = moduleSpec.getProvider().get();
+              } finally {
+                ReactMarker.logMarker(ReactMarkerConstants.CREATE_MODULE_END);
+              }
+              moduleHolder = new ModuleHolder(module);
+            } else {
+              moduleHolder = new ModuleHolder(reactModuleInfo, moduleSpec.getProvider());
+            }
+            return moduleHolder;
+          }
+
+          @Override
+          public boolean hasNext() {
+            return position < nativeModules.size();
+          }
+
+          @Override
+          public void remove() {
+            throw new UnsupportedOperationException("Cannot remove native modules from the list");
+          }
+        };
+      }
+    };
+  }
+
   /**
    * @param reactContext react application context that can be used to create modules
    * @return list of module specs that can create the native modules
    */
-  public abstract List<ModuleSpec> getNativeModules(
-    ReactApplicationContext reactContext);
+  protected abstract List<ModuleSpec> getNativeModules(ReactApplicationContext reactContext);
 
+  /**
+   * This is only used when a LazyReactPackage is a part of {@link CompositeReactPackage} Once we
+   * deprecate {@link CompositeReactPackage}, this can be removed too
+   *
+   * @param reactContext react application context that can be used to create modules
+   * @return
+   */
   @Override
   public final List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
     List<NativeModule> modules = new ArrayList<>();
     for (ModuleSpec holder : getNativeModules(reactContext)) {
       NativeModule nativeModule;
       SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "createNativeModule")
-        .arg("module", holder.getType())
-        .flush();
-      ReactMarker.logMarker(
-        ReactMarkerConstants.CREATE_MODULE_START,
-        holder.getClassName());
+          .arg("module", holder.getType())
+          .flush();
+      ReactMarker.logMarker(ReactMarkerConstants.CREATE_MODULE_START, holder.getName());
       try {
         nativeModule = holder.getProvider().get();
       } finally {
@@ -95,7 +156,6 @@ public final List<NativeModule> createNativeModules(ReactApplicationContext reac
     }
     return modules;
   }
-
   /**
    * @param reactContext react application context that can be used to create View Managers.
    * @return list of module specs that can create the View Managers.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/MemoryPressureRouter.java b/ReactAndroid/src/main/java/com/facebook/react/MemoryPressureRouter.java
index 627b962f667517..209c21f5f0fb9c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/MemoryPressureRouter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/MemoryPressureRouter.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/NativeModuleRegistryBuilder.java b/ReactAndroid/src/main/java/com/facebook/react/NativeModuleRegistryBuilder.java
index ba107f1a638dd2..3bb541bf8c036b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/NativeModuleRegistryBuilder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/NativeModuleRegistryBuilder.java
@@ -1,128 +1,65 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 package com.facebook.react;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import com.facebook.common.logging.FLog;
-import com.facebook.react.bridge.BaseJavaModule;
-import com.facebook.react.bridge.ModuleSpec;
 import com.facebook.react.bridge.ModuleHolder;
-import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.NativeModuleRegistry;
-import com.facebook.react.bridge.OnBatchCompleteListener;
 import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReactMarker;
-import com.facebook.react.bridge.ReactMarkerConstants;
-import com.facebook.react.common.ReactConstants;
-import com.facebook.react.module.model.ReactModuleInfo;
+import java.util.HashMap;
+import java.util.Map;
 
-/**
- * Helper class to build NativeModuleRegistry.
- */
+/** Helper class to build NativeModuleRegistry. */
 public class NativeModuleRegistryBuilder {
 
   private final ReactApplicationContext mReactApplicationContext;
   private final ReactInstanceManager mReactInstanceManager;
 
   private final Map<String, ModuleHolder> mModules = new HashMap<>();
-  private final Map<String,String> namesToType = new HashMap<>();
 
   public NativeModuleRegistryBuilder(
-    ReactApplicationContext reactApplicationContext,
-    ReactInstanceManager reactInstanceManager) {
+      ReactApplicationContext reactApplicationContext, ReactInstanceManager reactInstanceManager) {
     mReactApplicationContext = reactApplicationContext;
     mReactInstanceManager = reactInstanceManager;
   }
 
   public void processPackage(ReactPackage reactPackage) {
+    // We use an iterable instead of an iterator here to ensure thread safety, and that this list
+    // cannot be modified
+    Iterable<ModuleHolder> moduleHolders;
     if (reactPackage instanceof LazyReactPackage) {
-      LazyReactPackage lazyReactPackage = (LazyReactPackage) reactPackage;
-      List<ModuleSpec> moduleSpecs = lazyReactPackage.getNativeModules(mReactApplicationContext);
-      Map<String, ReactModuleInfo> reactModuleInfoMap =
-          lazyReactPackage.getReactModuleInfoProvider().getReactModuleInfos();
-
-      for (ModuleSpec moduleSpec : moduleSpecs) {
-        String className = moduleSpec.getClassName();
-        ReactModuleInfo reactModuleInfo = reactModuleInfoMap.get(className);
-        ModuleHolder moduleHolder;
-        if (reactModuleInfo == null) {
-          NativeModule module;
-          ReactMarker.logMarker(
-            ReactMarkerConstants.CREATE_MODULE_START,
-            moduleSpec.getClassName());
-          try {
-            module = moduleSpec.getProvider().get();
-          } finally {
-            ReactMarker.logMarker(ReactMarkerConstants.CREATE_MODULE_END);
-          }
-          moduleHolder = new ModuleHolder(module);
-        } else {
-          moduleHolder = new ModuleHolder(reactModuleInfo, moduleSpec.getProvider());
-        }
-
-        String name = moduleHolder.getName();
-        putModuleTypeAndHolderToModuleMaps(className, name, moduleHolder);
-      }
+      moduleHolders =
+          ((LazyReactPackage) reactPackage).getNativeModuleIterator(mReactApplicationContext);
+    } else if (reactPackage instanceof TurboReactPackage) {
+      moduleHolders =
+          ((TurboReactPackage) reactPackage).getNativeModuleIterator(mReactApplicationContext);
     } else {
-      FLog.d(
-          ReactConstants.TAG,
-          reactPackage.getClass().getSimpleName()
-              + " is not a LazyReactPackage, falling back to old version.");
-      List<NativeModule> nativeModules;
-      if (reactPackage instanceof ReactInstancePackage) {
-        ReactInstancePackage reactInstancePackage = (ReactInstancePackage) reactPackage;
-        nativeModules =
-            reactInstancePackage.createNativeModules(
-                mReactApplicationContext, mReactInstanceManager);
-      } else {
-        nativeModules = reactPackage.createNativeModules(mReactApplicationContext);
-      }
-      for (NativeModule nativeModule : nativeModules) {
-        addNativeModule(nativeModule);
-      }
+      moduleHolders =
+          ReactPackageHelper.getNativeModuleIterator(
+              reactPackage, mReactApplicationContext, mReactInstanceManager);
     }
-  }
-
-  public void addNativeModule(NativeModule nativeModule) {
-    String name = nativeModule.getName();
-    Class<? extends NativeModule> type = nativeModule.getClass();
-    putModuleTypeAndHolderToModuleMaps(type.getName(), name, new ModuleHolder(nativeModule));
-  }
 
-  private void putModuleTypeAndHolderToModuleMaps(
-      String className, String underName, ModuleHolder moduleHolder)
-      throws IllegalStateException {
-    if (namesToType.containsKey(underName)) {
-      String existingNativeModule = namesToType.get(underName);
-      if (!moduleHolder.getCanOverrideExistingModule()) {
-        throw new IllegalStateException(
-            "Native module "
-                + className
-                + " tried to override "
-                + existingNativeModule
-                + " for module name "
-                + underName
-                + ". Check the getPackages() method in MainApplication.java, it might be "
-                + "that module is being created twice. "
-                + "If this was your intention, set canOverrideExistingModule=true");
+    for (ModuleHolder moduleHolder : moduleHolders) {
+      String name = moduleHolder.getName();
+      if (mModules.containsKey(name)) {
+        ModuleHolder existingNativeModule = mModules.get(name);
+        if (!moduleHolder.getCanOverrideExistingModule()) {
+          throw new IllegalStateException(
+              "Native module "
+                  + name
+                  + " tried to override "
+                  + existingNativeModule.getClassName()
+                  + " for module name .Check the getPackages() method in MainApplication.java, it might be that module is being created twice. If this was your intention, set canOverrideExistingModule=true");
+        }
+        mModules.remove(existingNativeModule);
       }
-
-      mModules.remove(existingNativeModule);
+      mModules.put(name, moduleHolder);
     }
-
-    namesToType.put(underName, className);
-    mModules.put(className, moduleHolder);
   }
 
   public NativeModuleRegistry build() {
-    return new NativeModuleRegistry(
-        mReactApplicationContext, mModules);
+    return new NativeModuleRegistry(mReactApplicationContext, mModules);
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactActivity.java b/ReactAndroid/src/main/java/com/facebook/react/ReactActivity.java
index bbe9cad4473816..788148db5c4030 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactActivity.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java b/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
index c0691c748db507..c18ccc473c08b6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -205,14 +205,14 @@ public void invoke(Object... args) {
     };
   }
 
-  private Context getContext() {
+  protected Context getContext() {
     if (mActivity != null) {
       return mActivity;
     }
     return Assertions.assertNotNull(mFragmentActivity);
   }
 
-  private Activity getPlainActivity() {
+  protected Activity getPlainActivity() {
     return ((Activity) getContext());
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactAndroidHWInputDeviceHelper.java b/ReactAndroid/src/main/java/com/facebook/react/ReactAndroidHWInputDeviceHelper.java
index 8c3df938340e47..35bbf17ed012ab 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactAndroidHWInputDeviceHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactAndroidHWInputDeviceHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,20 +25,18 @@ public class ReactAndroidHWInputDeviceHelper {
    * Contains a mapping between handled KeyEvents and the corresponding navigation event
    * that should be fired when the KeyEvent is received.
    */
-  private static final Map<Integer, String> KEY_EVENTS_ACTIONS = MapBuilder.of(
-    KeyEvent.KEYCODE_DPAD_CENTER,
-    "select",
-    KeyEvent.KEYCODE_ENTER,
-    "select",
-    KeyEvent.KEYCODE_SPACE,
-    "select",
-    KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE,
-    "playPause",
-    KeyEvent.KEYCODE_MEDIA_REWIND,
-    "rewind",
-    KeyEvent.KEYCODE_MEDIA_FAST_FORWARD,
-    "fastForward"
-  );
+  private static final Map<Integer, String> KEY_EVENTS_ACTIONS = MapBuilder.<Integer, String>builder()
+    .put(KeyEvent.KEYCODE_DPAD_CENTER, "select")
+    .put(KeyEvent.KEYCODE_ENTER, "select")
+    .put(KeyEvent.KEYCODE_SPACE, "select")
+    .put(KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE, "playPause")
+    .put(KeyEvent.KEYCODE_MEDIA_REWIND, "rewind")
+    .put(KeyEvent.KEYCODE_MEDIA_FAST_FORWARD, "fastForward")
+    .put(KeyEvent.KEYCODE_DPAD_UP, "up")
+    .put(KeyEvent.KEYCODE_DPAD_RIGHT, "right")
+    .put(KeyEvent.KEYCODE_DPAD_DOWN, "down")
+    .put(KeyEvent.KEYCODE_DPAD_LEFT, "left")
+    .build();
 
   /**
    * We keep a reference to the last focused view id
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactApplication.java b/ReactAndroid/src/main/java/com/facebook/react/ReactApplication.java
index 88b7ab2093fc1b..0a63e0149ea45d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactApplication.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactApplication.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactFragmentActivity.java b/ReactAndroid/src/main/java/com/facebook/react/ReactFragmentActivity.java
index b104b91e4ef521..8676a88ff9c956 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactFragmentActivity.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactFragmentActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java b/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
index 14d36eac31ab92..284469fe1019ca 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,6 +25,8 @@
 import static com.facebook.react.bridge.ReactMarkerConstants.REACT_CONTEXT_THREAD_START;
 import static com.facebook.react.bridge.ReactMarkerConstants.SETUP_REACT_CONTEXT_END;
 import static com.facebook.react.bridge.ReactMarkerConstants.SETUP_REACT_CONTEXT_START;
+import static com.facebook.react.bridge.ReactMarkerConstants.CHANGE_THREAD_PRIORITY;
+import static com.facebook.react.bridge.ReactMarkerConstants.VM_INIT;
 import static com.facebook.react.uimanager.common.UIManagerType.FABRIC;
 import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_APPS;
 import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
@@ -34,6 +36,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Bundle;
 import android.os.Process;
 import android.support.v4.view.ViewCompat;
 import android.util.Log;
@@ -44,6 +47,7 @@
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.infer.annotation.ThreadConfined;
 import com.facebook.infer.annotation.ThreadSafe;
+import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.CatalystInstance;
 import com.facebook.react.bridge.CatalystInstance.CatalystInstanceEventListener;
 import com.facebook.react.bridge.CatalystInstanceImpl;
@@ -83,6 +87,7 @@
 import com.facebook.react.modules.fabric.ReactFabric;
 import com.facebook.react.packagerconnection.RequestHandler;
 import com.facebook.react.uimanager.DisplayMetricsHolder;
+import com.facebook.react.uimanager.UIImplementationProvider;
 import com.facebook.react.uimanager.UIManagerHelper;
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.react.views.imagehelper.ResourceDrawableIdHelper;
@@ -96,6 +101,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 import javax.annotation.Nullable;
 
 /**
@@ -131,8 +137,8 @@ public interface ReactInstanceEventListener {
     void onReactContextInitialized(ReactContext context);
   }
 
-  private final List<ReactRootView> mAttachedRootViews = Collections.synchronizedList(
-    new ArrayList<ReactRootView>());
+  private final Set<ReactRootView> mAttachedRootViews = Collections.synchronizedSet(
+    new HashSet<ReactRootView>());
 
   private volatile LifecycleState mLifecycleState;
 
@@ -214,6 +220,7 @@ public static ReactInstanceManagerBuilder builder() {
     boolean useDeveloperSupport,
     @Nullable NotThreadSafeBridgeIdleDebugListener bridgeIdleDebugListener,
     LifecycleState initialLifecycleState,
+    @Nullable UIImplementationProvider mUIImplementationProvider,
     NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler,
     @Nullable RedBoxHandler redBoxHandler,
     boolean lazyViewManagersEnabled,
@@ -235,6 +242,8 @@ public static ReactInstanceManagerBuilder builder() {
     mJSMainModulePath = jsMainModulePath;
     mPackages = new ArrayList<>();
     mUseDeveloperSupport = useDeveloperSupport;
+    Systrace.beginSection(
+        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "ReactInstanceManager.initDevSupportManager");
     mDevSupportManager =
         DevSupportManagerFactory.create(
             applicationContext,
@@ -245,6 +254,7 @@ public static ReactInstanceManagerBuilder builder() {
             devBundleDownloadListener,
             minNumShakes,
             customPackagerCommandHandlers);
+    Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
     mBridgeIdleDebugListener = bridgeIdleDebugListener;
     mLifecycleState = initialLifecycleState;
     mMemoryPressureRouter = new MemoryPressureRouter(applicationContext);
@@ -263,6 +273,7 @@ public void invokeDefaultOnBackPressed() {
                   ReactInstanceManager.this.invokeDefaultOnBackPressed();
                 }
               },
+              mUIImplementationProvider,
               lazyViewManagersEnabled,
               minTimeLeftInFrameForNonBatchedOperationMs));
       if (mUseDeveloperSupport) {
@@ -405,9 +416,7 @@ private void recreateReactContextInBackgroundInner() {
         .logMessage(ReactDebugOverlayTags.RN_CORE, "RNCore: recreateReactContextInBackground");
     UiThreadUtil.assertOnUiThread();
 
-    if (mUseDeveloperSupport
-        && mJSMainModulePath != null
-        && !Systrace.isTracing(TRACE_TAG_REACT_APPS | TRACE_TAG_REACT_JS_VM_CALLS)) {
+    if (mUseDeveloperSupport && mJSMainModulePath != null) {
       final DeveloperSettings devSettings = mDevSupportManager.getDevSettings();
 
       // If remote JS debugging is enabled, load from dev server.
@@ -416,30 +425,35 @@ private void recreateReactContextInBackgroundInner() {
         // If there is a up-to-date bundle downloaded from server,
         // with remote JS debugging disabled, always use that.
         onJSBundleLoadedFromServer(null);
-      } else if (mBundleLoader == null) {
-        mDevSupportManager.handleReloadJS();
-      } else {
-        mDevSupportManager.isPackagerRunning(
-            new PackagerStatusCallback() {
-              @Override
-              public void onPackagerStatusFetched(final boolean packagerIsRunning) {
-                UiThreadUtil.runOnUiThread(
-                    new Runnable() {
-                      @Override
-                      public void run() {
-                        if (packagerIsRunning) {
-                          mDevSupportManager.handleReloadJS();
-                        } else {
-                          // If dev server is down, disable the remote JS debugging.
-                          devSettings.setRemoteJSDebugEnabled(false);
-                          recreateReactContextInBackgroundFromBundleLoader();
+        return;
+      }
+
+      if (!Systrace.isTracing(TRACE_TAG_REACT_APPS | TRACE_TAG_REACT_JS_VM_CALLS)) {
+        if (mBundleLoader == null) {
+          mDevSupportManager.handleReloadJS();
+        } else {
+          mDevSupportManager.isPackagerRunning(
+              new PackagerStatusCallback() {
+                @Override
+                public void onPackagerStatusFetched(final boolean packagerIsRunning) {
+                  UiThreadUtil.runOnUiThread(
+                      new Runnable() {
+                        @Override
+                        public void run() {
+                          if (packagerIsRunning) {
+                            mDevSupportManager.handleReloadJS();
+                          } else {
+                            // If dev server is down, disable the remote JS debugging.
+                            devSettings.setRemoteJSDebugEnabled(false);
+                            recreateReactContextInBackgroundFromBundleLoader();
+                          }
                         }
-                      }
-                    });
-              }
-            });
+                      });
+                }
+              });
+        }
+        return;
       }
-      return;
     }
 
     recreateReactContextInBackgroundFromBundleLoader();
@@ -506,7 +520,6 @@ public void onNewIntent(Intent intent) {
           currentContext.getNativeModule(DeviceEventManagerModule.class);
         deviceEventManagerModule.emitNewIntentReceived(uri);
       }
-
       currentContext.onNewIntent(mCurrentActivity, intent);
     }
   }
@@ -772,7 +785,7 @@ public void attachRootView(ReactRootView rootView) {
     // automatically when creation completes, as root view is part of the attached root view list.
     ReactContext currentContext = getCurrentReactContext();
     if (mCreateReactContextThread == null && currentContext != null) {
-      attachRootViewToInstance(rootView, currentContext.getCatalystInstance());
+      attachRootViewToInstance(rootView);
     }
   }
 
@@ -784,10 +797,13 @@ public void attachRootView(ReactRootView rootView) {
   @ThreadConfined(UI)
   public void detachRootView(ReactRootView rootView) {
     UiThreadUtil.assertOnUiThread();
-    if (mAttachedRootViews.remove(rootView)) {
-      ReactContext currentContext = getCurrentReactContext();
-      if (currentContext != null && currentContext.hasActiveCatalystInstance()) {
-        detachViewFromInstance(rootView, currentContext.getCatalystInstance());
+    synchronized (mAttachedRootViews) {
+      if (mAttachedRootViews.contains(rootView)) {
+        ReactContext currentContext = getCurrentReactContext();
+        mAttachedRootViews.remove(rootView);
+        if (currentContext != null && currentContext.hasActiveCatalystInstance()) {
+          detachViewFromInstance(rootView, currentContext.getCatalystInstance());
+        }
       }
     }
   }
@@ -843,6 +859,7 @@ public List<ViewManager> getOrCreateViewManagers(
   }
 
   public @Nullable List<String> getViewManagerNames() {
+    Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "ReactInstanceManager.getViewManagerNames");
     ReactApplicationContext context;
     synchronized(mReactContextLock) {
       context = (ReactApplicationContext) getCurrentReactContext();
@@ -854,15 +871,19 @@ public List<ViewManager> getOrCreateViewManagers(
     synchronized (mPackages) {
       Set<String> uniqueNames = new HashSet<>();
       for (ReactPackage reactPackage : mPackages) {
+        SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "ReactInstanceManager.getViewManagerName")
+          .arg("Package", reactPackage.getClass().getSimpleName())
+          .flush();
         if (reactPackage instanceof ViewManagerOnDemandReactPackage) {
           List<String> names =
-              ((ViewManagerOnDemandReactPackage) reactPackage)
-                  .getViewManagerNames(context);
+              ((ViewManagerOnDemandReactPackage) reactPackage).getViewManagerNames(context);
           if (names != null) {
             uniqueNames.addAll(names);
           }
         }
+        SystraceMessage.endSection(TRACE_TAG_REACT_JAVA_BRIDGE).flush();
       }
+      Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
       return new ArrayList<>(uniqueNames);
     }
   }
@@ -892,6 +913,10 @@ public LifecycleState getLifecycleState() {
     return mLifecycleState;
   }
 
+  public String getJsExecutorName() {
+    return mJavaScriptExecutorFactory.toString();
+  }
+
   @ThreadConfined(UI)
   private void onReloadWithJSDebugger(JavaJSExecutor.Factory jsExecutorFactory) {
     Log.d(ReactConstants.TAG, "ReactInstanceManager.onReloadWithJSDebugger()");
@@ -937,10 +962,12 @@ private void recreateReactContextInBackground(
   private void runCreateReactContextOnNewThread(final ReactContextInitParams initParams) {
     Log.d(ReactConstants.TAG, "ReactInstanceManager.runCreateReactContextOnNewThread()");
     UiThreadUtil.assertOnUiThread();
-    synchronized (mReactContextLock) {
-      if (mCurrentReactContext != null) {
-        tearDownReactContext(mCurrentReactContext);
-        mCurrentReactContext = null;
+    synchronized (mAttachedRootViews) {
+      synchronized (mReactContextLock) {
+        if (mCurrentReactContext != null) {
+          tearDownReactContext(mCurrentReactContext);
+          mCurrentReactContext = null;
+        }
       }
     }
 
@@ -948,6 +975,7 @@ private void runCreateReactContextOnNewThread(final ReactContextInitParams initP
     mIsContextCreatedOnUIThread = false;
     mCreateReactContextThread =
         new Thread(
+            null,
             new Runnable() {
               @Override
               public void run() {
@@ -966,6 +994,7 @@ public void run() {
 
                 try {
                   Process.setThreadPriority(Process.THREAD_PRIORITY_DISPLAY);
+                  ReactMarker.logMarker(VM_INIT);
                   final ReactApplicationContext reactApplicationContext =
                       createReactContext(
                           initParams.getJsExecutorFactory().create(),
@@ -1001,7 +1030,8 @@ public void run() {
                   mDevSupportManager.handleException(e);
                 }
               }
-            });
+            },
+            "create_react_context");
     ReactMarker.logMarker(REACT_CONTEXT_THREAD_START);
     mCreateReactContextThread.start();
   }
@@ -1059,17 +1089,17 @@ private void setupReactContext(final ReactApplicationContext reactContext) {
     final CatalystInstance catalystInstance =
       Assertions.assertNotNull(reactContext.getCatalystInstance());
 
-    catalystInstance.initialize();
-    mDevSupportManager.onNewReactContextCreated(reactContext);
-    mMemoryPressureRouter.addMemoryPressureListener(catalystInstance);
-    moveReactContextToCurrentLifecycleState();
+      catalystInstance.initialize();
+      mDevSupportManager.onNewReactContextCreated(reactContext);
+      mMemoryPressureRouter.addMemoryPressureListener(catalystInstance);
+      moveReactContextToCurrentLifecycleState();
 
     // Do not attach root views if the context is created synchronously on UI thread.
     if (!mIsContextCreatedOnUIThread) {
       ReactMarker.logMarker(ATTACH_MEASURED_ROOT_VIEWS_START);
       synchronized (mAttachedRootViews) {
         for (ReactRootView rootView : mAttachedRootViews) {
-          attachRootViewToInstance(rootView, catalystInstance);
+          attachRootViewToInstance(rootView);
         }
       }
       ReactMarker.logMarker(ATTACH_MEASURED_ROOT_VIEWS_END);
@@ -1096,6 +1126,7 @@ public void run() {
           @Override
           public void run() {
             Process.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT);
+            ReactMarker.logMarker(CHANGE_THREAD_PRIORITY, "js_default");
           }
         });
     reactContext.runOnNativeModulesQueueThread(
@@ -1107,13 +1138,17 @@ public void run() {
         });
   }
 
-  private void attachRootViewToInstance(
-      final ReactRootView rootView,
-      CatalystInstance catalystInstance) {
+  private void attachRootViewToInstance(final ReactRootView rootView) {
     Log.d(ReactConstants.TAG, "ReactInstanceManager.attachRootViewToInstance()");
     Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "attachRootViewToInstance");
     UIManager uiManagerModule = UIManagerHelper.getUIManager(mCurrentReactContext, rootView.getUIManagerType());
-    final int rootTag = uiManagerModule.addRootView(rootView);
+
+    @Nullable Bundle initialProperties = rootView.getAppProperties();
+    final int rootTag = uiManagerModule.addRootView(
+      rootView,
+      initialProperties == null ?
+            new WritableNativeMap() : Arguments.fromBundle(initialProperties),
+        rootView.getInitialUITemplate());
     rootView.setRootViewTag(rootTag);
     rootView.runApplication();
     Systrace.beginAsyncSection(
@@ -1214,9 +1249,13 @@ private ReactApplicationContext createReactContext(
       catalystInstance.setGlobalVariable("__RCTProfileIsProfiling", "true");
     }
     ReactMarker.logMarker(ReactMarkerConstants.PRE_RUN_JS_BUNDLE_START);
+    Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "runJSBundle");
     catalystInstance.runJSBundle();
+    Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
+
     reactContext.initializeWithInstance(catalystInstance);
 
+
     return reactContext;
   }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerBuilder.java b/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerBuilder.java
index e6d9b016143d24..e69c8d68e7f3ee 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerBuilder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactInstanceManagerBuilder.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -11,7 +11,6 @@
 import android.app.Application;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.JSBundleLoader;
-import com.facebook.react.bridge.JSCJavaScriptExecutorFactory;
 import com.facebook.react.bridge.JSIModulePackage;
 import com.facebook.react.bridge.JavaScriptExecutorFactory;
 import com.facebook.react.bridge.NativeModuleCallExceptionHandler;
@@ -21,8 +20,10 @@
 import com.facebook.react.devsupport.RedBoxHandler;
 import com.facebook.react.devsupport.interfaces.DevBundleDownloadListener;
 import com.facebook.react.devsupport.interfaces.DevSupportManager;
+import com.facebook.react.jscexecutor.JSCExecutorFactory;
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.facebook.react.packagerconnection.RequestHandler;
+import com.facebook.react.uimanager.UIImplementationProvider;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -42,6 +43,7 @@ public class ReactInstanceManagerBuilder {
   private @Nullable Application mApplication;
   private boolean mUseDeveloperSupport;
   private @Nullable LifecycleState mInitialLifecycleState;
+  private @Nullable UIImplementationProvider mUIImplementationProvider;
   private @Nullable NativeModuleCallExceptionHandler mNativeModuleCallExceptionHandler;
   private @Nullable Activity mCurrentActivity;
   private @Nullable DefaultHardwareBackBtnHandler mDefaultHardwareBackBtnHandler;
@@ -57,6 +59,16 @@ public class ReactInstanceManagerBuilder {
   /* package protected */ ReactInstanceManagerBuilder() {
   }
 
+  /**
+   * Sets a provider of {@link UIImplementation}.
+   * Uses default provider if null is passed.
+   */
+  public ReactInstanceManagerBuilder setUIImplementationProvider(
+    @Nullable UIImplementationProvider uiImplementationProvider) {
+    mUIImplementationProvider = uiImplementationProvider;
+    return this;
+  }
+
   public ReactInstanceManagerBuilder setJSIModulesPackage(
     @Nullable JSIModulePackage jsiModulePackage) {
     mJSIModulesPackage = jsiModulePackage;
@@ -243,6 +255,11 @@ public ReactInstanceManager build() {
       mJSMainModulePath != null || mJSBundleAssetUrl != null || mJSBundleLoader != null,
       "Either MainModulePath or JS Bundle File needs to be provided");
 
+    if (mUIImplementationProvider == null) {
+      // create default UIImplementationProvider if the provided one is null.
+      mUIImplementationProvider = new UIImplementationProvider();
+    }
+
     // We use the name of the device and the app for debugging & metrics
     String appName = mApplication.getPackageName();
     String deviceName = getFriendlyDeviceName();
@@ -252,7 +269,7 @@ public ReactInstanceManager build() {
         mCurrentActivity,
         mDefaultHardwareBackBtnHandler,
         mJavaScriptExecutorFactory == null
-            ? new JSCJavaScriptExecutorFactory(appName, deviceName)
+            ? new JSCExecutorFactory(appName, deviceName)
             : mJavaScriptExecutorFactory,
         (mJSBundleLoader == null && mJSBundleAssetUrl != null)
             ? JSBundleLoader.createAssetLoader(
@@ -263,6 +280,7 @@ public ReactInstanceManager build() {
         mUseDeveloperSupport,
         mBridgeIdleDebugListener,
         Assertions.assertNotNull(mInitialLifecycleState, "Initial lifecycle state was not set"),
+        mUIImplementationProvider,
         mNativeModuleCallExceptionHandler,
         mRedBoxHandler,
         mLazyViewManagersEnabled,
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactInstancePackage.java b/ReactAndroid/src/main/java/com/facebook/react/ReactInstancePackage.java
index 98df50ba8a2991..3095ff155bf2d3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactInstancePackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactInstancePackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java b/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
index b408d9e2ebafed..d15abba7f760e1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactNativeHost.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,6 +15,7 @@
 import com.facebook.react.bridge.ReactMarkerConstants;
 import com.facebook.react.common.LifecycleState;
 import com.facebook.react.devsupport.RedBoxHandler;
+import com.facebook.react.uimanager.UIImplementationProvider;
 import java.util.List;
 import javax.annotation.Nullable;
 
@@ -70,6 +71,7 @@ protected ReactInstanceManager createReactInstanceManager() {
       .setUseDeveloperSupport(getUseDeveloperSupport())
       .setRedBoxHandler(getRedBoxHandler())
       .setJavaScriptExecutorFactory(getJavaScriptExecutorFactory())
+      .setUIImplementationProvider(getUIImplementationProvider())
       .setJSIModulesPackage(getJSIModulePackage())
       .setInitialLifecycleState(LifecycleState.BEFORE_CREATE);
 
@@ -107,6 +109,16 @@ protected final Application getApplication() {
     return mApplication;
   }
 
+  /**
+   * Get the {@link UIImplementationProvider} to use. Override this method if you want to use a
+   * custom UI implementation.
+   *
+   * Note: this is very advanced functionality, in 99% of cases you don't need to override this.
+   */
+  protected UIImplementationProvider getUIImplementationProvider() {
+    return new UIImplementationProvider();
+  }
+
   protected @Nullable
   JSIModulePackage getJSIModulePackage() {
     return null;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/ReactPackage.java
index 51828a144a249a..0dd952216a8c09 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,11 @@
 
 package com.facebook.react;
 
-import java.util.List;
-
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.JavaScriptModule;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.ViewManager;
+import java.util.List;
 
 /**
  * Main interface for providing additional capabilities to the catalyst framework by couple of
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactPackageHelper.java b/ReactAndroid/src/main/java/com/facebook/react/ReactPackageHelper.java
new file mode 100644
index 00000000000000..5ce5b82595943a
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactPackageHelper.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react;
+
+import android.support.annotation.NonNull;
+import com.facebook.common.logging.FLog;
+import com.facebook.react.bridge.ModuleHolder;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.common.ReactConstants;
+import java.util.Iterator;
+import java.util.List;
+
+public class ReactPackageHelper {
+  /**
+   * A helper method to iterate over a list of Native Modules and convert them to an iterable.
+   *
+   * @param reactPackage
+   * @param reactApplicationContext
+   * @param reactInstanceManager
+   * @return
+   */
+  public static Iterable<ModuleHolder> getNativeModuleIterator(
+      ReactPackage reactPackage,
+      ReactApplicationContext reactApplicationContext,
+      ReactInstanceManager reactInstanceManager) {
+    FLog.d(
+        ReactConstants.TAG,
+        reactPackage.getClass().getSimpleName()
+            + " is not a LazyReactPackage, falling back to old version.");
+    final List<NativeModule> nativeModules;
+    if (reactPackage instanceof ReactInstancePackage) {
+      ReactInstancePackage reactInstancePackage = (ReactInstancePackage) reactPackage;
+      nativeModules =
+          reactInstancePackage.createNativeModules(reactApplicationContext, reactInstanceManager);
+    } else {
+      nativeModules = reactPackage.createNativeModules(reactApplicationContext);
+    }
+    return new Iterable<ModuleHolder>() {
+      @NonNull
+      @Override
+      public Iterator<ModuleHolder> iterator() {
+        return new Iterator<ModuleHolder>() {
+          int position = 0;
+
+          @Override
+          public ModuleHolder next() {
+            return new ModuleHolder(nativeModules.get(position++));
+          }
+
+          @Override
+          public boolean hasNext() {
+            return position < nativeModules.size();
+          }
+
+          @Override
+          public void remove() {
+            throw new UnsupportedOperationException("Cannot remove methods ");
+          }
+        };
+      }
+    };
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactPackageLogger.java b/ReactAndroid/src/main/java/com/facebook/react/ReactPackageLogger.java
index eba45f3be229f3..38b2f2bddb65df 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactPackageLogger.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactPackageLogger.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java b/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
index 13ed88113ae2cd..8441065aa95e3e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,7 +29,6 @@
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.CatalystInstance;
-import com.facebook.react.bridge.GuardedRunnable;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactMarker;
 import com.facebook.react.bridge.ReactMarkerConstants;
@@ -48,7 +47,6 @@
 import com.facebook.react.uimanager.RootView;
 import com.facebook.react.uimanager.UIManagerHelper;
 import com.facebook.react.uimanager.UIManagerModule;
-import com.facebook.react.uimanager.ViewProps;
 import com.facebook.react.uimanager.common.MeasureSpecProvider;
 import com.facebook.react.uimanager.common.SizeMonitoringFrameLayout;
 import com.facebook.react.uimanager.common.UIManagerType;
@@ -84,6 +82,7 @@ public interface ReactRootViewEventListener {
   private @Nullable ReactInstanceManager mReactInstanceManager;
   private @Nullable String mJSModuleName;
   private @Nullable Bundle mAppProperties;
+  private @Nullable String mInitialUITemplate;
   private @Nullable CustomGlobalLayoutListener mCustomGlobalLayoutListener;
   private @Nullable ReactRootViewEventListener mRootViewEventListener;
   private int mRootViewTag;
@@ -112,9 +111,7 @@ public ReactRootView(Context context, AttributeSet attrs, int defStyle) {
   }
 
   private void init() {
-    if (!ViewProps.sDefaultOverflowHidden) {
-      setClipChildren(false);
-    }
+    setClipChildren(false);
   }
 
   @Override
@@ -347,6 +344,13 @@ public void startReactApplication(ReactInstanceManager reactInstanceManager, Str
     startReactApplication(reactInstanceManager, moduleName, null);
   }
 
+  /**
+   * {@see #startReactApplication(ReactInstanceManager, String, android.os.Bundle, String)}
+   */
+  public void startReactApplication(ReactInstanceManager reactInstanceManager, String moduleName, @Nullable Bundle initialProperties) {
+    startReactApplication(reactInstanceManager, moduleName, initialProperties, null);
+  }
+
   /**
    * Schedule rendering of the react component rendered by the JS application from the given JS
    * module (@{param moduleName}) using provided {@param reactInstanceManager} to attach to the
@@ -356,7 +360,8 @@ public void startReactApplication(ReactInstanceManager reactInstanceManager, Str
   public void startReactApplication(
       ReactInstanceManager reactInstanceManager,
       String moduleName,
-      @Nullable Bundle initialProperties) {
+      @Nullable Bundle initialProperties,
+      @Nullable String initialUITemplate) {
     Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "startReactApplication");
     try {
       UiThreadUtil.assertOnUiThread();
@@ -371,6 +376,7 @@ public void startReactApplication(
       mReactInstanceManager = reactInstanceManager;
       mJSModuleName = moduleName;
       mAppProperties = initialProperties;
+      mInitialUITemplate = initialUITemplate;
 
       if (!mReactInstanceManager.hasStartedCreatingInitialContext()) {
         mReactInstanceManager.createReactContextInBackground();
@@ -408,16 +414,10 @@ private void updateRootLayoutSpecs(final int widthMeasureSpec, final int heightM
       return;
     }
     final ReactContext reactApplicationContext = mReactInstanceManager.getCurrentReactContext();
+
     if (reactApplicationContext != null) {
-      reactApplicationContext.runOnNativeModulesQueueThread(
-          new GuardedRunnable(reactApplicationContext) {
-            @Override
-            public void runGuarded() {
-              UIManagerHelper
-                .getUIManager(reactApplicationContext, getUIManagerType())
-                .updateRootLayoutSpecs(getRootViewTag(), widthMeasureSpec, heightMeasureSpec);
-            }
-          });
+      UIManagerHelper.getUIManager(reactApplicationContext, getUIManagerType())
+        .updateRootLayoutSpecs(getRootViewTag(), widthMeasureSpec, heightMeasureSpec);
     }
   }
 
@@ -459,6 +459,10 @@ public void setEventListener(ReactRootViewEventListener eventListener) {
     return mAppProperties;
   }
 
+  public @Nullable String getInitialUITemplate() {
+    return mInitialUITemplate;
+  }
+
   public void setAppProperties(@Nullable Bundle appProperties) {
     UiThreadUtil.assertOnUiThread();
     mAppProperties = appProperties;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/TurboReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/TurboReactPackage.java
new file mode 100644
index 00000000000000..bd2b019eb7c919
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/TurboReactPackage.java
@@ -0,0 +1,126 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react;
+
+import android.support.annotation.NonNull;
+import com.facebook.react.bridge.ModuleHolder;
+import com.facebook.react.bridge.ModuleSpec;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.module.model.ReactModuleInfo;
+import com.facebook.react.module.model.ReactModuleInfoProvider;
+import com.facebook.react.uimanager.ViewManager;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.inject.Provider;
+
+/** This will eventually replace {@link LazyReactPackage} when TurboModules are finally done. */
+public abstract class TurboReactPackage implements ReactPackage {
+
+  @Override
+  public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+    throw new UnsupportedOperationException(
+        "In case of TurboModules, createNativeModules is not supported. NativeModuleRegistry should instead use getModuleList or getModule method");
+  }
+
+  /**
+   * The API needed for TurboModules. Given a module name, it returns an instance of {@link
+   * NativeModule} for the name
+   *
+   * @param name
+   * @param reactContext
+   * @return
+   */
+  public abstract NativeModule getModule(String name, final ReactApplicationContext reactContext);
+
+  /**
+   * This is a temporary method till we implement TurboModules. Once we implement TurboModules, we
+   * will be able to directly call {@link TurboReactPackage#getModule(String,
+   * ReactApplicationContext)} This method will be removed when TurboModule implementation is
+   * complete
+   *
+   * @param reactContext
+   * @return
+   */
+  public Iterable<ModuleHolder> getNativeModuleIterator(
+      final ReactApplicationContext reactContext) {
+    final Set<Map.Entry<String, ReactModuleInfo>> entrySet =
+        getReactModuleInfoProvider().getReactModuleInfos().entrySet();
+    final Iterator<Map.Entry<String, ReactModuleInfo>> entrySetIterator = entrySet.iterator();
+    return new Iterable<ModuleHolder>() {
+      @NonNull
+      @Override
+      // This should ideally be an IteratorConvertor, but we don't have any internal library for it
+      public Iterator<ModuleHolder> iterator() {
+        return new Iterator<ModuleHolder>() {
+          @Override
+          public boolean hasNext() {
+            return entrySetIterator.hasNext();
+          }
+
+          @Override
+          public ModuleHolder next() {
+            Map.Entry<String, ReactModuleInfo> entry = entrySetIterator.next();
+            String name = entry.getKey();
+            ReactModuleInfo reactModuleInfo = entry.getValue();
+            return new ModuleHolder(reactModuleInfo, new ModuleHolderProvider(name, reactContext));
+          }
+
+          @Override
+          public void remove() {
+            throw new UnsupportedOperationException("Cannot remove native modules from the list");
+          }
+        };
+      }
+    };
+  }
+
+  /**
+   * @param reactContext react application context that can be used to create View Managers.
+   * @return list of module specs that can create the View Managers.
+   */
+  protected List<ModuleSpec> getViewManagers(ReactApplicationContext reactContext) {
+    return Collections.emptyList();
+  }
+
+  @Override
+  public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+    List<ModuleSpec> viewManagerModuleSpecs = getViewManagers(reactContext);
+    if (viewManagerModuleSpecs == null || viewManagerModuleSpecs.isEmpty()) {
+      return Collections.emptyList();
+    }
+
+    List<ViewManager> viewManagers = new ArrayList<>();
+    for (ModuleSpec moduleSpec : viewManagerModuleSpecs) {
+      viewManagers.add((ViewManager) moduleSpec.getProvider().get());
+    }
+    return viewManagers;
+  }
+
+  public abstract ReactModuleInfoProvider getReactModuleInfoProvider();
+
+  private class ModuleHolderProvider implements Provider<NativeModule> {
+
+    private final String mName;
+    private final ReactApplicationContext mReactContext;
+
+    public ModuleHolderProvider(String name, ReactApplicationContext reactContext) {
+      mName = name;
+      mReactContext = reactContext;
+    }
+
+    @Override
+    public NativeModule get() {
+      return getModule(mName, mReactContext);
+    }
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/ViewManagerOnDemandReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/ViewManagerOnDemandReactPackage.java
index c28f91f60ee859..c8bd730bb0c839 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ViewManagerOnDemandReactPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ViewManagerOnDemandReactPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/AdditionAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/AdditionAnimatedNode.java
index 5b2640f60049cd..221ba9e5363292 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/AdditionAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/AdditionAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNode.java
index beaa02926368ce..c4493b59b90099 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNodeValueListener.java b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNodeValueListener.java
index 09dbb65bc34bfc..6c92345f11b728 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNodeValueListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedNodeValueListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimationDriver.java b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimationDriver.java
index 079a07add26733..894a6d557f16bc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/AnimationDriver.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/AnimationDriver.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/BUCK b/ReactAndroid/src/main/java/com/facebook/react/animated/BUCK
index 245797afcd291e..406ef5c79a1153 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "animated",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/DecayAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/animated/DecayAnimation.java
index 1547633a386585..1781cb83875fff 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/DecayAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/DecayAnimation.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/DiffClampAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/DiffClampAnimatedNode.java
index 8f812a4b8143e7..7f077a6610c5cf 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/DiffClampAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/DiffClampAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/DivisionAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/DivisionAnimatedNode.java
index 8dc720e72ce924..96e96059e885d4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/DivisionAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/DivisionAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.java b/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.java
index e0a1b0d1234037..7e2c46eef26c88 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/EventAnimationDriver.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java b/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
index 3029ef8fc1cfd8..84551c418d473e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/FrameBasedAnimationDriver.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/InterpolationAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/InterpolationAnimatedNode.java
index b1a138e2b54f48..0b91c37814b56b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/InterpolationAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/InterpolationAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/ModulusAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/ModulusAnimatedNode.java
index d942d757459914..6d90a82729405d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/ModulusAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/ModulusAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
index ae1a4d7b850760..23839c5c221876 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedModule.java b/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedModule.java
index de29f0383455f7..b4596f18edc4eb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -75,7 +75,7 @@
 public class NativeAnimatedModule extends ReactContextBaseJavaModule implements
     LifecycleEventListener, UIManagerModuleListener {
 
-  protected static final String NAME = "NativeAnimatedModule";
+  public static final String NAME = "NativeAnimatedModule";
 
   private interface UIThreadOperation {
     void execute(NativeAnimatedNodesManager animatedNodesManager);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedNodesManager.java b/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedNodesManager.java
index 07357fd7eea998..41d2746e0774dc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedNodesManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedNodesManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/PropsAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/PropsAnimatedNode.java
index 813d72b075e6b0..d59a05aa953361 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/PropsAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/PropsAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/SpringAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/animated/SpringAnimation.java
index 3558756149b969..6b76ae32daa1bf 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/SpringAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/SpringAnimation.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.animated;
 
 import com.facebook.react.bridge.ReadableMap;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/StyleAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/StyleAnimatedNode.java
index 0b77e1f043fca5..0a46c31facd05a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/StyleAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/StyleAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/SubtractionAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/SubtractionAnimatedNode.java
index 4a8ecd8ce736a7..ac29638a2d3c73 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/SubtractionAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/SubtractionAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/TrackingAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/TrackingAnimatedNode.java
index a339780dfdb60f..76108b548a3ddc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/TrackingAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/TrackingAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/TransformAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/TransformAnimatedNode.java
index d5f7f79b8efddd..9288c25d6bfd0a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/TransformAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/TransformAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java b/ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java
index a28511b481b76f..49426c77ebb237 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractFloatPairPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractFloatPairPropertyUpdater.java
index e29a94a2e46225..b086f8fdcc91f9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractFloatPairPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractFloatPairPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractSingleFloatProperyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractSingleFloatProperyUpdater.java
index 2ef6befadbb964..cfa24177eca220 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractSingleFloatProperyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/AbstractSingleFloatProperyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/Animation.java b/ReactAndroid/src/main/java/com/facebook/react/animation/Animation.java
index 670db11335181f..af29fdeaae0918 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/Animation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/Animation.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationListener.java b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationListener.java
index ed192daeef3a9b..bc4b9e2916858d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationPropertyUpdater.java
index 3f0a8d1a37c101..b815210be58018 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationRegistry.java
index 4df661c8be1c92..58b9518801cc8a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/AnimationRegistry.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/BUCK b/ReactAndroid/src/main/java/com/facebook/react/animation/BUCK
index 0fa55d8134c0c9..1c2781c23b47b6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "animation",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/ImmediateAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/animation/ImmediateAnimation.java
index dff3fa06d497a5..4949d68dfe20b1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/ImmediateAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/ImmediateAnimation.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/NoopAnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/NoopAnimationPropertyUpdater.java
index 7a94de2ddf5da9..04a5ee9ee4b149 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/NoopAnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/NoopAnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/OpacityAnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/OpacityAnimationPropertyUpdater.java
index e53aa8227cf678..7ca1af8a30a6df 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/OpacityAnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/OpacityAnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/PositionAnimationPairPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/PositionAnimationPairPropertyUpdater.java
index ab3678ff0e9310..9d2e9737106c46 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/PositionAnimationPairPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/PositionAnimationPairPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/RotationAnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/RotationAnimationPropertyUpdater.java
index e089fdec658bf0..772fa09a236f99 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/RotationAnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/RotationAnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXAnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXAnimationPropertyUpdater.java
index de4167972a66ed..dd8bb4c24c458f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXAnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXAnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXYAnimationPairPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXYAnimationPairPropertyUpdater.java
index 996e95d68f7149..779527b1a86159 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXYAnimationPairPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleXYAnimationPairPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleYAnimationPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleYAnimationPropertyUpdater.java
index 533d6717f2efa2..e3bf36cfb6c087 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleYAnimationPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/animation/ScaleYAnimationPropertyUpdater.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/AcJavaModuleWrapper.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/AcJavaModuleWrapper.java
index cacdf6c40b92cc..abf074ffe708c6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/AcJavaModuleWrapper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/AcJavaModuleWrapper.java
@@ -47,7 +47,7 @@ public final class AcJavaModuleWrapper extends JavaModuleWrapper {
   }
 
   public AcJavaModuleWrapper(JSInstance jsInstance, String moduleClass, ModuleHolder moduleHolder) {
-    super(jsInstance, moduleClass, moduleHolder);
+    super(jsInstance, moduleHolder);
     ModuleHelper helper = null;
     if (helper == null && mCustomModuleProvider != null) {
       helper = mCustomModuleProvider.getModuleHelper(getModule());
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ActivityEventListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ActivityEventListener.java
index 6642260e68b392..f4b6f51f933fbd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ActivityEventListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ActivityEventListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Arguments.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Arguments.java
index 1979edaa880c6e..0fd9e82a271373 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Arguments.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Arguments.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/AssertionException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/AssertionException.java
index 651ec03a927497..e225b718dd3a0e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/AssertionException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/AssertionException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/BUCK b/ReactAndroid/src/main/java/com/facebook/react/bridge/BUCK
index 14693f5a77f160..cb5842fc9fc65b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/BUCK
@@ -1,8 +1,24 @@
-load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "IS_OSS_BUILD", "react_native_dep", "react_native_target", "rn_android_library")
+
+INTERFACES = [
+    "Dynamic.java",
+    "ReadableMap.java",
+    "ReadableMapKeySetIterator.java",
+    "WritableArray.java",
+    "WritableMap.java",
+    "NativeModule.java",
+    "JSInstance.java",
+    "ReadableArray.java",
+    "ReadableType.java",
+    "NativeArrayInterface.java",
+]
 
 rn_android_library(
     name = "bridge",
-    srcs = glob(["**/*.java"]),
+    srcs = glob(
+        ["**/*.java"],
+        exclude = INTERFACES,
+    ),
     proguard_config = "reactnative.pro",
     provided_deps = [
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
@@ -20,12 +36,37 @@ rn_android_library(
         react_native_target("java/com/facebook/debug/tags:tags"),
         react_native_target("java/com/facebook/debug/holder:holder"),
         react_native_target("java/com/facebook/react/common:common"),
+        react_native_target("java/com/facebook/react/config:config"),
         react_native_target("java/com/facebook/react/module/model:model"),
         react_native_target("java/com/facebook/react/uimanager/common:common"),
+        react_native_target("java/com/facebook/react/module/annotations:annotations"),
     ] + ([react_native_target("jni/react/jni:jni")] if not IS_OSS_BUILD else []),
     exported_deps = [
         react_native_dep("java/com/facebook/jni:jni"),
         react_native_dep("java/com/facebook/proguard/annotations:annotations"),
         react_native_dep("third-party/java/jsr-330:jsr-330"),
+        react_native_target("java/com/facebook/react/bridge:interfaces"),
+    ],
+)
+
+rn_android_library(
+    name = "interfaces",
+    srcs = glob(INTERFACES),
+    proguard_config = "reactnative.pro",
+    provided_deps = [
+        react_native_dep("third-party/android/support/v4:lib-support-v4"),
+    ],
+    required_for_source_only_abi = True,
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = [
+        react_native_dep("third-party/java/infer-annotations:infer-annotations"),
+        react_native_dep("third-party/java/jsr-305:jsr-305"),
+        react_native_target("java/com/facebook/debug/tags:tags"),
+    ],
+    exported_deps = [
+        react_native_dep("java/com/facebook/proguard/annotations:annotations"),
+        react_native_dep("third-party/java/jsr-330:jsr-330"),
     ],
 )
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseActivityEventListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseActivityEventListener.java
index 2e9b492e1d592e..d7369ad1932c4a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseActivityEventListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseActivityEventListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseJavaModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseJavaModule.java
index 694428509b1a06..04ca7a91c74969 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseJavaModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/BaseJavaModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Callback.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Callback.java
index 1a7810d6f97b11..26cb5b4c483ff4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Callback.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Callback.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CallbackImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CallbackImpl.java
index e1d28cfb8500e2..9bef1b06189028 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CallbackImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CallbackImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstance.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstance.java
index 693aca0c632d98..369a4f7c4b2a4f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstance.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstance.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -38,7 +38,7 @@ public interface CatalystInstance
   @Override @DoNotStrip
   void invokeCallback(
       int callbackID,
-      NativeArray arguments);
+      NativeArrayInterface arguments);
   @DoNotStrip
   void callFunction(
       String module,
@@ -63,6 +63,7 @@ void callFunction(
   <T extends JavaScriptModule> T getJSModule(Class<T> jsInterface);
   <T extends NativeModule> boolean hasNativeModule(Class<T> nativeModuleInterface);
   <T extends NativeModule> T getNativeModule(Class<T> nativeModuleInterface);
+  NativeModule getNativeModule(String moduleName);
   <T extends JSIModule> T getJSIModule(Class<T> jsiModuleInterface);
   Collection<NativeModule> getNativeModules();
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java
index cc55712d8c971c..f5a8055c7eabbe 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,8 @@
 
 package com.facebook.react.bridge;
 
+import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
+
 import android.content.res.AssetManager;
 import android.os.AsyncTask;
 import android.util.Log;
@@ -21,8 +23,11 @@
 import com.facebook.react.bridge.queue.ReactQueueConfigurationSpec;
 import com.facebook.react.common.ReactConstants;
 import com.facebook.react.common.annotations.VisibleForTesting;
+import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.systrace.Systrace;
 import com.facebook.systrace.TraceListener;
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Native;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -103,6 +108,8 @@ private CatalystInstanceImpl(
       NativeModuleCallExceptionHandler nativeModuleCallExceptionHandler,
       CatalystInstanceEventListener catalystInstanceEventListener) {
     Log.d(ReactConstants.TAG, "Initializing React Xplat Bridge.");
+    Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "createCatalystInstanceImpl");
+
     mHybridData = initHybrid();
 
     mReactQueueConfiguration = ReactQueueConfigurationImpl.create(
@@ -115,6 +122,7 @@ private CatalystInstanceImpl(
     mNativeModuleCallExceptionHandler = nativeModuleCallExceptionHandler;
     mNativeModulesQueueThread = mReactQueueConfiguration.getNativeModulesQueueThread();
     mTraceListener = new JSProfilerTraceListener(this);
+    Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
 
     Log.d(ReactConstants.TAG, "Create module registry");
 
@@ -128,11 +136,13 @@ private CatalystInstanceImpl(
     }
 
     Log.d(ReactConstants.TAG, "Initializing React Xplat Bridge before initializeBridge");
+    Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "initializeCxxBridge");
     initializeBridge(
       new BridgeCallback(this),
       jsExecutor,
       mReactQueueConfiguration.getJSQueueThread());
     Log.d(ReactConstants.TAG, "Initializing React Xplat Bridge after initializeBridge");
+    Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
 
     mJavaScriptContextHolder = new JavaScriptContextHolder(getJavaScriptContext());
   }
@@ -317,13 +327,13 @@ public void callFunction(PendingJSCall function) {
   private native void jniCallJSCallback(int callbackID, NativeArray arguments);
 
   @Override
-  public void invokeCallback(final int callbackID, final NativeArray arguments) {
+  public void invokeCallback(final int callbackID, final NativeArrayInterface arguments) {
     if (mDestroyed) {
       FLog.w(ReactConstants.TAG, "Invoking JS callback after bridge has been destroyed.");
       return;
     }
 
-    jniCallJSCallback(callbackID, arguments);
+    jniCallJSCallback(callbackID, (NativeArray) arguments);
   }
 
   /**
@@ -425,13 +435,25 @@ public <T extends JavaScriptModule> T getJSModule(Class<T> jsInterface) {
 
   @Override
   public <T extends NativeModule> boolean hasNativeModule(Class<T> nativeModuleInterface) {
-    return mNativeModuleRegistry.hasModule(nativeModuleInterface);
+    return mNativeModuleRegistry.hasModule(getNameFromAnnotation(nativeModuleInterface));
   }
 
-  // This is only ever called with UIManagerModule or CurrentViewerModule.
   @Override
   public <T extends NativeModule> T getNativeModule(Class<T> nativeModuleInterface) {
-    return mNativeModuleRegistry.getModule(nativeModuleInterface);
+    return (T) mNativeModuleRegistry.getModule(getNameFromAnnotation(nativeModuleInterface));
+  }
+
+  @Override
+  public NativeModule getNativeModule(String moduleName) {
+    return mNativeModuleRegistry.getModule(moduleName);
+  }
+
+  private <T extends NativeModule> String getNameFromAnnotation(Class<T> nativeModuleInterface){
+    ReactModule annotation = nativeModuleInterface.getAnnotation(ReactModule.class);
+    if (annotation == null) {
+      throw new IllegalArgumentException("Could not find @ReactModule annotation in " + nativeModuleInterface.getCanonicalName());
+    }
+    return annotation.name();
   }
 
   // This is only used by com.facebook.react.modules.common.ModuleDataCleaner
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ContextBaseJavaModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ContextBaseJavaModule.java
index ff5340631a214f..fc68cb84bff0fc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ContextBaseJavaModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ContextBaseJavaModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxCallbackImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxCallbackImpl.java
index 8d33451f4268ac..839da9a704b214 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxCallbackImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxCallbackImpl.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapper.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapper.java
index b270579443a301..a60704ecb42665 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapper.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapperBase.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapperBase.java
index 6b3a9346cf0c51..1fa8e97019fa37 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapperBase.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/CxxModuleWrapperBase.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/DefaultNativeModuleCallExceptionHandler.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/DefaultNativeModuleCallExceptionHandler.java
index c730a5de7548e9..0204a14e873bc5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/DefaultNativeModuleCallExceptionHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/DefaultNativeModuleCallExceptionHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Dynamic.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Dynamic.java
index feeab03bb228f1..67f414ddff6341 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Dynamic.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Dynamic.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromArray.java
index 6c107feeaa50a6..77a1bc9a42826d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromMap.java
index 4d268ea8614ccc..0d9f9a3a2a588d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/DynamicFromMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,13 +9,18 @@
 
 import javax.annotation.Nullable;
 
-import android.support.v4.util.Pools;
+import android.support.v4.util.Pools.SimplePool;
 
 /**
  * Implementation of Dynamic wrapping a ReadableMap.
  */
 public class DynamicFromMap implements Dynamic {
-  private static final Pools.SimplePool<DynamicFromMap> sPool = new Pools.SimplePool<>(10);
+  private static final ThreadLocal<SimplePool<DynamicFromMap>> sPool = new ThreadLocal<SimplePool<DynamicFromMap>>() {
+    @Override
+    protected SimplePool<DynamicFromMap> initialValue() {
+      return new SimplePool<>(10);
+    }
+  };
 
   private @Nullable ReadableMap mMap;
   private @Nullable String mName;
@@ -24,7 +29,7 @@ public class DynamicFromMap implements Dynamic {
   private DynamicFromMap() {}
 
   public static DynamicFromMap create(ReadableMap map, String name) {
-    DynamicFromMap dynamic = sPool.acquire();
+    DynamicFromMap dynamic = sPool.get().acquire();
     if (dynamic == null) {
       dynamic = new DynamicFromMap();
     }
@@ -37,7 +42,7 @@ public static DynamicFromMap create(ReadableMap map, String name) {
   public void recycle() {
     mMap = null;
     mName = null;
-    sPool.release(this);
+    sPool.get().release(this);
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/FallbackJSBundleLoader.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/FallbackJSBundleLoader.java
index 816c3d6c3b1dfc..93f14f1f4e28bc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/FallbackJSBundleLoader.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/FallbackJSBundleLoader.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedAsyncTask.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedAsyncTask.java
index 749d6555338efc..9b81961efee12c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedAsyncTask.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedAsyncTask.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedResultAsyncTask.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedResultAsyncTask.java
index 0145c26dfc2aac..df0d857186b545 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedResultAsyncTask.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedResultAsyncTask.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedRunnable.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedRunnable.java
index e69bc052e5f61c..b550cbaeade5b5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedRunnable.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/GuardedRunnable.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Inspector.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Inspector.java
index 2c37980fff5630..44ef6b7b826f03 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Inspector.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Inspector.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/InvalidIteratorException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/InvalidIteratorException.java
index e57fe494f18001..c13de24f45bbb7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/InvalidIteratorException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/InvalidIteratorException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationCausedNativeException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationCausedNativeException.java
index 7c6d5faa893af5..078b042e7b6e4d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationCausedNativeException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationCausedNativeException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationIllegalArgumentException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationIllegalArgumentException.java
index 70716b269a4759..365ac08bd19cfb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationIllegalArgumentException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSApplicationIllegalArgumentException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSBundleLoader.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSBundleLoader.java
index c62b1675aa0fa3..44164e32eeb06d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSBundleLoader.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSBundleLoader.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutor.java
index ead9806f50960b..08e6ca3ad442c5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutorFactory.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutorFactory.java
index 5e360808c03d6e..7fe2f16403c380 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutorFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutorFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,4 +24,9 @@ public JavaScriptExecutor create() throws Exception {
     jscConfig.putString("DeviceIdentity", mDeviceName);
     return new JSCJavaScriptExecutor(jscConfig);
   }
+
+  @Override
+  public String toString() {
+    return "JSCExecutor";
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModule.java
index 8ee96fee2181ac..43b1d3349b5355 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModule.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 /**
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleHolder.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleHolder.java
index 14d0f97eba0bf2..7e7f4b0914cb01 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleHolder.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 public class JSIModuleHolder {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModulePackage.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModulePackage.java
index 9a85f68d69f00f..e5c28700b83700 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModulePackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModulePackage.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 import java.util.List;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleProvider.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleProvider.java
index a94162f12a06c3..d8c3765878c694 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleProvider.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 public interface JSIModuleProvider<T extends JSIModule> {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleRegistry.java
index dbca620dcfcc6e..c90d4007762a2c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleRegistry.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 import com.facebook.infer.annotation.Assertions;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleSpec.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleSpec.java
index d8c21220049048..1178921292e567 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleSpec.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSIModuleSpec.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
 /**
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSInstance.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSInstance.java
index fb1333680e1241..a20ee7089b28de 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JSInstance.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JSInstance.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,7 +15,7 @@
 public interface JSInstance {
   void invokeCallback(
       int callbackID,
-      NativeArray arguments);
+      NativeArrayInterface arguments);
   // TODO if this interface survives refactoring, think about adding
   // callFunction.
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaJSExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaJSExecutor.java
index 801b550a8c1569..4f6c057631ecda 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaJSExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaJSExecutor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaMethodWrapper.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaMethodWrapper.java
index e0490c10a8bb12..3a8bfcda2eed74 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaMethodWrapper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaMethodWrapper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,14 +26,14 @@ public int getJSArgumentsNeeded() {
     }
 
     public abstract @Nullable T extractArgument(
-      JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex);
+      JSInstance jsInstance, ReadableArray jsArguments, int atIndex);
   }
 
   static final private ArgumentExtractor<Boolean> ARGUMENT_EXTRACTOR_BOOLEAN =
     new ArgumentExtractor<Boolean>() {
       @Override
       public Boolean extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return jsArguments.getBoolean(atIndex);
       }
     };
@@ -42,7 +42,7 @@ public Boolean extractArgument(
     new ArgumentExtractor<Double>() {
       @Override
       public Double extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return jsArguments.getDouble(atIndex);
       }
     };
@@ -51,7 +51,7 @@ public Double extractArgument(
     new ArgumentExtractor<Float>() {
       @Override
       public Float extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return (float) jsArguments.getDouble(atIndex);
       }
     };
@@ -60,7 +60,7 @@ public Float extractArgument(
     new ArgumentExtractor<Integer>() {
       @Override
       public Integer extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return (int) jsArguments.getDouble(atIndex);
       }
     };
@@ -69,16 +69,16 @@ public Integer extractArgument(
     new ArgumentExtractor<String>() {
       @Override
       public String extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return jsArguments.getString(atIndex);
       }
     };
 
-  static final private ArgumentExtractor<ReadableNativeArray> ARGUMENT_EXTRACTOR_ARRAY =
-    new ArgumentExtractor<ReadableNativeArray>() {
+  static final private ArgumentExtractor<ReadableArray> ARGUMENT_EXTRACTOR_ARRAY =
+    new ArgumentExtractor<ReadableArray>() {
       @Override
-      public ReadableNativeArray extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+      public ReadableArray extractArgument(
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return jsArguments.getArray(atIndex);
       }
     };
@@ -87,7 +87,7 @@ public ReadableNativeArray extractArgument(
     new ArgumentExtractor<Dynamic>() {
       @Override
       public Dynamic extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return DynamicFromArray.create(jsArguments, atIndex);
       }
     };
@@ -96,7 +96,7 @@ public Dynamic extractArgument(
     new ArgumentExtractor<ReadableMap>() {
       @Override
       public ReadableMap extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         return jsArguments.getMap(atIndex);
       }
     };
@@ -105,7 +105,7 @@ public ReadableMap extractArgument(
     new ArgumentExtractor<Callback>() {
       @Override
       public @Nullable Callback extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         if (jsArguments.isNull(atIndex)) {
           return null;
         } else {
@@ -124,7 +124,7 @@ public int getJSArgumentsNeeded() {
 
       @Override
       public Promise extractArgument(
-        JSInstance jsInstance, ReadableNativeArray jsArguments, int atIndex) {
+        JSInstance jsInstance, ReadableArray jsArguments, int atIndex) {
         Callback resolve = ARGUMENT_EXTRACTOR_CALLBACK
           .extractArgument(jsInstance, jsArguments, atIndex);
         Callback reject = ARGUMENT_EXTRACTOR_CALLBACK
@@ -328,7 +328,7 @@ private String getAffectedRange(int startIndex, int jsArgumentsNeeded) {
   }
 
   @Override
-  public void invoke(JSInstance jsInstance, ReadableNativeArray parameters) {
+  public void invoke(JSInstance jsInstance, ReadableArray parameters) {
     String traceName = mModuleWrapper.getName() + "." + mMethod.getName();
     SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "callJavaModuleMethod")
       .arg("method", traceName)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaModuleWrapper.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaModuleWrapper.java
index 52e0216057d600..4f4ada1c36c99d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaModuleWrapper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaModuleWrapper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -49,14 +49,12 @@ public static class MethodDescriptor {
   
   protected final JSInstance mJSInstance;
   private final ModuleHolder mModuleHolder;
-  private final String mClassName;
   private final ArrayList<NativeModule.NativeMethod> mMethods;
   private final ArrayList<MethodDescriptor> mDescs;
 
-  public JavaModuleWrapper(JSInstance jsInstance, String className, ModuleHolder moduleHolder) {
+  public JavaModuleWrapper(JSInstance jsInstance, ModuleHolder moduleHolder) {
     mJSInstance = jsInstance;
     mModuleHolder = moduleHolder;
-    mClassName = className;
     mMethods = new ArrayList<>();
     mDescs = new ArrayList();
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyArray.java
index 0533cfd3e4c829..83684d7a245ed2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyMap.java
index bce96a33921d93..ba565105fe740c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaOnlyMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptContextHolder.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptContextHolder.java
index fdf5fc8f6c67a8..13c767afc6c020 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptContextHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptContextHolder.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutor.java
index 9c72fd1f8e54d0..4333cfbbda767a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutorFactory.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutorFactory.java
index e34b4b1d00b3fe..1530755ca58dca 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutorFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutorFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModule.java
index c086508a3d6cdf..e3b5f56813579b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModuleRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModuleRegistry.java
index 5df3309135e915..5bb25881ca4bbd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModuleRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModuleRegistry.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriter.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriter.java
index 33714b555102d8..924b7915629515 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriterHelper.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriterHelper.java
index cc55b7d9259714..712197ae088f30 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriterHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/JsonWriterHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/LifecycleEventListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/LifecycleEventListener.java
index 3fa44d4b8ecd3a..908e13db416bbe 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/LifecycleEventListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/LifecycleEventListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressure.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressure.java
index f0cd074795c911..315ad7bc2b39e0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressure.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressure.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressureListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressureListener.java
index 35e014d5929795..972f17aa397da0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressureListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/MemoryPressureListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleHolder.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleHolder.java
index 4693775435b22f..a71bcd41bde6e8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleHolder.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -24,11 +24,12 @@
 /**
  * Holder to enable us to lazy create native modules.
  *
- * This works by taking a provider instead of an instance, when it is first required we'll create
+ * <p>This works by taking a provider instead of an instance, when it is first required we'll create
  * and initialize it. Initialization currently always happens on the UI thread but this is due to
  * change for performance reasons.
  *
- * Lifecycle events via a {@link LifecycleEventListener} will still always happen on the UI thread.
+ * <p>Lifecycle events via a {@link LifecycleEventListener} will still always happen on the UI
+ * thread.
  */
 @DoNotStrip
 public class ModuleHolder {
@@ -38,9 +39,7 @@ public class ModuleHolder {
   private final int mInstanceKey = sInstanceKeyCounter.getAndIncrement();
 
   private final String mName;
-  private final boolean mCanOverrideExistingModule;
-  private final boolean mHasConstants;
-  private final boolean mIsCxxModule;
+  private final ReactModuleInfo mReactModuleInfo;
 
   private @Nullable Provider<? extends NativeModule> mProvider;
   // Outside of the constructur, these should only be checked or set when synchronized on this
@@ -53,10 +52,8 @@ public class ModuleHolder {
 
   public ModuleHolder(ReactModuleInfo moduleInfo, Provider<? extends NativeModule> provider) {
     mName = moduleInfo.name();
-    mCanOverrideExistingModule = moduleInfo.canOverrideExistingModule();
-    mHasConstants = moduleInfo.hasConstants();
     mProvider = provider;
-    mIsCxxModule = moduleInfo.isCxxModule();
+    mReactModuleInfo = moduleInfo;
     if (moduleInfo.needsEagerInit()) {
       mModule = create();
     }
@@ -64,19 +61,25 @@ public ModuleHolder(ReactModuleInfo moduleInfo, Provider<? extends NativeModule>
 
   public ModuleHolder(NativeModule nativeModule) {
     mName = nativeModule.getName();
-    mCanOverrideExistingModule = nativeModule.canOverrideExistingModule();
-    mHasConstants = true;
-    mIsCxxModule = CxxModuleWrapper.class.isAssignableFrom(nativeModule.getClass());
+    mReactModuleInfo =
+        new ReactModuleInfo(
+            nativeModule.getName(),
+            nativeModule.getClass().getSimpleName(),
+            nativeModule.canOverrideExistingModule(),
+            true,
+            true,
+            CxxModuleWrapper.class.isAssignableFrom(nativeModule.getClass()));
+
     mModule = nativeModule;
     PrinterHolder.getPrinter()
         .logMessage(ReactDebugOverlayTags.NATIVE_MODULE, "NativeModule init: %s", mName);
   }
 
   /*
-  * Checks if mModule has been created, and if so tries to initialize the module unless another
-  * thread is already doing the initialization.
-  * If mModule has not been created, records that initialization is needed
-  */
+   * Checks if mModule has been created, and if so tries to initialize the module unless another
+   * thread is already doing the initialization.
+   * If mModule has not been created, records that initialization is needed
+   */
   /* package */ void markInitializable() {
     boolean shouldInitializeNow = false;
     NativeModule module = null;
@@ -109,14 +112,20 @@ public String getName() {
   }
 
   public boolean getCanOverrideExistingModule() {
-    return mCanOverrideExistingModule;
+    return mReactModuleInfo.canOverrideExistingModule();
   }
 
   public boolean getHasConstants() {
-    return mHasConstants;
+    return mReactModuleInfo.hasConstants();
   }
 
-  public boolean isCxxModule() {return mIsCxxModule; }
+  public boolean isCxxModule() {
+    return mReactModuleInfo.isCxxModule();
+  }
+
+  public String getClassName() {
+    return mReactModuleInfo.className();
+  }
 
   @DoNotStrip
   public NativeModule getModule() {
@@ -125,11 +134,12 @@ public NativeModule getModule() {
     synchronized (this) {
       if (mModule != null) {
         return mModule;
-      // if mModule has not been set, and no one is creating it. Then this thread should call create
+        // if mModule has not been set, and no one is creating it. Then this thread should call
+        // create
       } else if (!mIsCreating) {
         shouldCreate = true;
         mIsCreating = true;
-      } else  {
+      } else {
         // Wait for mModule to be created by another thread
       }
     }
@@ -163,8 +173,8 @@ private NativeModule create() {
     SoftAssertions.assertCondition(mModule == null, "Creating an already created module.");
     ReactMarker.logMarker(CREATE_MODULE_START, mName, mInstanceKey);
     SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "ModuleHolder.createModule")
-      .arg("name", mName)
-      .flush();
+        .arg("name", mName)
+        .flush();
     PrinterHolder.getPrinter()
         .logMessage(ReactDebugOverlayTags.NATIVE_MODULE, "NativeModule init: %s", mName);
     NativeModule module;
@@ -172,7 +182,7 @@ private NativeModule create() {
       module = assertNotNull(mProvider).get();
       mProvider = null;
       boolean shouldInitializeNow = false;
-      synchronized(this) {
+      synchronized (this) {
         mModule = module;
         if (mInitializable && !mIsInitializing) {
           shouldInitializeNow = true;
@@ -190,8 +200,8 @@ private NativeModule create() {
 
   private void doInitialize(NativeModule module) {
     SystraceMessage.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "ModuleHolder.initialize")
-      .arg("name", mName)
-      .flush();
+        .arg("name", mName)
+        .flush();
     ReactMarker.logMarker(ReactMarkerConstants.INITIALIZE_MODULE_START, mName, mInstanceKey);
     try {
       boolean shouldInitialize = false;
@@ -204,7 +214,8 @@ private void doInitialize(NativeModule module) {
       }
       if (shouldInitialize) {
         module.initialize();
-        // Once finished, set flags accordingly, but we don't expect anyone to wait for this to finish
+        // Once finished, set flags accordingly, but we don't expect anyone to wait for this to
+        // finish
         // So no need to notify other threads
         synchronized (this) {
           mIsInitializing = false;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleSpec.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleSpec.java
index e4ae3862d627c7..64766f16f179d8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleSpec.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ModuleSpec.java
@@ -1,73 +1,45 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.bridge;
 
-import com.facebook.react.common.build.ReactBuildConfig;
-import java.lang.reflect.Constructor;
+import com.facebook.common.logging.FLog;
+import com.facebook.react.module.annotations.ReactModule;
 import javax.annotation.Nullable;
 import javax.inject.Provider;
 
 /**
- * A specification for a native module. This exists so that we don't have to pay the cost
- * for creation until/if the module is used.
- *
- * If your module either has a default constructor or one taking ReactApplicationContext you can use
- * {@link #simple(Class)} or {@link #simple(Class, ReactApplicationContext)}} methods.
+ * A specification for a native module. This exists so that we don't have to pay the cost for
+ * creation until/if the module is used.
  */
 public class ModuleSpec {
-  private static final Class[] EMPTY_SIGNATURE = {};
-  private static final Class[] CONTEXT_SIGNATURE = { ReactApplicationContext.class };
 
+  private static final String TAG = "ModuleSpec";
   private final @Nullable Class<? extends NativeModule> mType;
   private final Provider<? extends NativeModule> mProvider;
-  private final String mClassName;
-
-  /**
-   * Simple spec for modules with a default constructor.
-   */
-  public static ModuleSpec simple(final Class<? extends NativeModule> type) {
-    return new ModuleSpec(type, new ConstructorProvider(type, EMPTY_SIGNATURE) {
-      @Override
-      public NativeModule get() {
-        try {
-          return getConstructor(type, EMPTY_SIGNATURE).newInstance();
-        } catch (Exception e) {
-          throw new RuntimeException("ModuleSpec with class: " + type.getName(), e);
-        }
-      }
-    });
-  }
-
-  /**
-   * Simple spec for modules with a constructor taking ReactApplicationContext.
-   */
-  public static ModuleSpec simple(
-      final Class<? extends NativeModule> type,
-      final ReactApplicationContext context) {
-    return new ModuleSpec(type, new ConstructorProvider(type, CONTEXT_SIGNATURE) {
-      @Override
-      public NativeModule get() {
-        try {
-          return getConstructor(type, CONTEXT_SIGNATURE).newInstance(context);
-        } catch (Exception e) {
-          throw new RuntimeException("ModuleSpec with class: " + type.getName(), e);
-        }
-      }
-    });
-  }
+  private final String mName;
 
   public static ModuleSpec viewManagerSpec(Provider<? extends NativeModule> provider) {
-    return new ModuleSpec(null, provider);
+    return new ModuleSpec(provider);
   }
 
   public static ModuleSpec nativeModuleSpec(
       Class<? extends NativeModule> type, Provider<? extends NativeModule> provider) {
-    return new ModuleSpec(provider, type.getName());
+    ReactModule annotation = type.getAnnotation(ReactModule.class);
+    if (annotation == null) {
+      FLog.w(
+          TAG,
+          "Could not find @ReactModule annotation on "
+              + type.getName()
+              + ". So creating the module eagerly to get the name. Consider adding an annotation to make this Lazy");
+      NativeModule nativeModule = provider.get();
+      return new ModuleSpec(provider, nativeModule.getName());
+    } else {
+      return new ModuleSpec(provider, annotation.name());
+    }
   }
 
   public static ModuleSpec nativeModuleSpec(
@@ -75,50 +47,32 @@ public static ModuleSpec nativeModuleSpec(
     return new ModuleSpec(provider, className);
   }
 
-  private ModuleSpec(
-      @Nullable Class<? extends NativeModule> type, Provider<? extends NativeModule> provider) {
-    mType = type;
+  /**
+   * Called by View Managers
+   *
+   * @param provider
+   */
+  private ModuleSpec(Provider<? extends NativeModule> provider) {
+    mType = null;
     mProvider = provider;
-    mClassName = type == null ? null : type.getName();
+    mName = null;
   }
 
-  public ModuleSpec(Provider<? extends NativeModule> provider, String name) {
+  private ModuleSpec(Provider<? extends NativeModule> provider, String name) {
     mType = null;
     mProvider = provider;
-    mClassName = name;
+    mName = name;
   }
 
   public @Nullable Class<? extends NativeModule> getType() {
     return mType;
   }
 
-  public String getClassName(){return mClassName;}
+  public String getName() {
+    return mName;
+  }
 
   public Provider<? extends NativeModule> getProvider() {
     return mProvider;
   }
-
-  private static abstract class ConstructorProvider implements Provider<NativeModule> {
-    protected @Nullable Constructor<? extends NativeModule> mConstructor;
-
-    public ConstructorProvider(Class<? extends NativeModule> type, Class[] signature) {
-      if (ReactBuildConfig.DEBUG) {
-        try {
-          mConstructor = getConstructor(type, signature);
-        } catch (NoSuchMethodException e) {
-          throw new IllegalArgumentException("No such constructor", e);
-        }
-      }
-    }
-
-    protected Constructor<? extends NativeModule> getConstructor(
-        Class<? extends NativeModule> mType,
-        Class[] signature) throws NoSuchMethodException {
-      if (mConstructor != null) {
-        return mConstructor;
-      } else {
-        return mType.getConstructor(signature);
-      }
-    }
-  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArgumentsParseException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArgumentsParseException.java
index 7cd373a6785ab8..3dd3617293e988 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArgumentsParseException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArgumentsParseException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArray.java
index bd314caf65985c..9ae9251f23ec4d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,7 @@
  * Base class for an array whose members are stored in native code (C++).
  */
 @DoNotStrip
-public abstract class NativeArray {
+public abstract class NativeArray implements NativeArrayInterface{
   static {
     ReactBridge.staticInit();
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArrayInterface.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArrayInterface.java
new file mode 100644
index 00000000000000..989208814f2758
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeArrayInterface.java
@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.bridge;
+
+public interface NativeArrayInterface {
+  @Override
+  String toString();
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeDeltaClient.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeDeltaClient.java
index 6b87c972c275d6..97eb4337284186 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeDeltaClient.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeDeltaClient.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2018-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeMap.java
index 55b32d7171d752..d1dbf145ef1678 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModule.java
index a57b41f93cc698..44d65b11f53a9b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,7 +20,7 @@
 @DoNotStrip
 public interface NativeModule {
   interface NativeMethod {
-    void invoke(JSInstance jsInstance, ReadableNativeArray parameters);
+    void invoke(JSInstance jsInstance, ReadableArray parameters);
     String getType();
   }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleCallExceptionHandler.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleCallExceptionHandler.java
index 9d77885dac77c7..ada610f1f06923 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleCallExceptionHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleCallExceptionHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleRegistry.java
index 721db371c3bd5f..074d494b7b8973 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NativeModuleRegistry.java
@@ -1,37 +1,33 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.bridge;
 
 import com.facebook.infer.annotation.Assertions;
+import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.systrace.Systrace;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
-/**
-  * A set of Java APIs to expose to a particular JavaScript instance.
-  */
+/** A set of Java APIs to expose to a particular JavaScript instance. */
+
 public class NativeModuleRegistry {
 
   private final ReactApplicationContext mReactApplicationContext;
   private final Map<String, ModuleHolder> mModules;
 
   public NativeModuleRegistry(
-    ReactApplicationContext reactApplicationContext,
-    Map<String, ModuleHolder> modules) {
+      ReactApplicationContext reactApplicationContext, Map<String, ModuleHolder> modules) {
     mReactApplicationContext = reactApplicationContext;
     mModules = modules;
   }
 
-  /**
-   * Private getters for combining NativeModuleRegistrys
-   */
+  /** Private getters for combining NativeModuleRegistrys */
   private Map<String, ModuleHolder> getModuleMap() {
     return mModules;
   }
@@ -40,13 +36,11 @@ private ReactApplicationContext getReactApplicationContext() {
     return mReactApplicationContext;
   }
 
-  /* package */ Collection<JavaModuleWrapper> getJavaModules(
-      JSInstance jsInstance) {
+  /* package */ Collection<JavaModuleWrapper> getJavaModules(JSInstance jsInstance) {
     ArrayList<JavaModuleWrapper> javaModules = new ArrayList<>();
     for (Map.Entry<String, ModuleHolder> entry : mModules.entrySet()) {
-      String type = entry.getKey();
       if (!entry.getValue().isCxxModule()) {
-        javaModules.add(new AcJavaModuleWrapper(jsInstance, type, entry.getValue()));
+        javaModules.add(new JavaModuleWrapper(jsInstance, entry.getValue()));
       }
     }
     return javaModules;
@@ -63,12 +57,13 @@ private ReactApplicationContext getReactApplicationContext() {
   }
 
   /*
-  * Adds any new modules to the current module registry
-  */
+   * Adds any new modules to the current module registry
+   */
   /* package */ void registerModules(NativeModuleRegistry newRegister) {
 
-    Assertions.assertCondition(mReactApplicationContext.equals(newRegister.getReactApplicationContext()),
-      "Extending native modules with non-matching application contexts.");
+    Assertions.assertCondition(
+        mReactApplicationContext.equals(newRegister.getReactApplicationContext()),
+        "Extending native modules with non-matching application contexts.");
 
     Map<String, ModuleHolder> newModules = newRegister.getModuleMap();
 
@@ -84,8 +79,7 @@ private ReactApplicationContext getReactApplicationContext() {
   /* package */ void notifyJSInstanceDestroy() {
     mReactApplicationContext.assertOnNativeModulesQueueThread();
     Systrace.beginSection(
-        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-        "NativeModuleRegistry_notifyJSInstanceDestroy");
+        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "NativeModuleRegistry_notifyJSInstanceDestroy");
     try {
       for (ModuleHolder module : mModules.values()) {
         module.destroy();
@@ -96,14 +90,14 @@ private ReactApplicationContext getReactApplicationContext() {
   }
 
   /* package */ void notifyJSInstanceInitialized() {
-    mReactApplicationContext.assertOnNativeModulesQueueThread("From version React Native v0.44, " +
-      "native modules are explicitly not initialized on the UI thread. See " +
-      "https://github.com/facebook/react-native/wiki/Breaking-Changes#d4611211-reactnativeandroidbreaking-move-nativemodule-initialization-off-ui-thread---aaachiuuu " +
-      " for more details.");
+    mReactApplicationContext.assertOnNativeModulesQueueThread(
+        "From version React Native v0.44, "
+            + "native modules are explicitly not initialized on the UI thread. See "
+            + "https://github.com/facebook/react-native/wiki/Breaking-Changes#d4611211-reactnativeandroidbreaking-move-nativemodule-initialization-off-ui-thread---aaachiuuu "
+            + " for more details.");
     ReactMarker.logMarker(ReactMarkerConstants.NATIVE_MODULE_INITIALIZE_START);
     Systrace.beginSection(
-        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-        "NativeModuleRegistry_notifyJSInstanceInitialized");
+        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "NativeModuleRegistry_notifyJSInstanceInitialized");
     try {
       for (ModuleHolder module : mModules.values()) {
         module.markInitializable();
@@ -116,22 +110,43 @@ private ReactApplicationContext getReactApplicationContext() {
 
   public void onBatchComplete() {
     // The only native module that uses the onBatchComplete is the UI Manager. Hence, instead of
-    // iterating over all the modules for find this one instance, and then calling it, we short-circuit
+    // iterating over all the modules for find this one instance, and then calling it, we
+    // short-circuit
     // the search, and simply call OnBatchComplete on the UI Manager.
     // With Fabric, UIManager would no longer be a NativeModule, so this call would simply go away
-    ModuleHolder moduleHolder = mModules.get("com.facebook.react.uimanager.UIManagerModule");
+    ModuleHolder moduleHolder = mModules.get("UIManager");
     if (moduleHolder != null && moduleHolder.hasInstance()) {
       ((OnBatchCompleteListener) moduleHolder.getModule()).onBatchComplete();
     }
   }
 
   public <T extends NativeModule> boolean hasModule(Class<T> moduleInterface) {
-    return mModules.containsKey(moduleInterface.getName());
+    String name = moduleInterface.getAnnotation(ReactModule.class).name();
+    return mModules.containsKey(name);
   }
 
   public <T extends NativeModule> T getModule(Class<T> moduleInterface) {
-    return (T) Assertions.assertNotNull(
-        mModules.get(moduleInterface.getName()), moduleInterface.getSimpleName()).getModule();
+    ReactModule annotation = moduleInterface.getAnnotation(ReactModule.class);
+    if (annotation == null) {
+      throw new IllegalArgumentException(
+          "Could not find @ReactModule annotation in class " + moduleInterface.getName());
+    }
+    return (T)
+        Assertions.assertNotNull(
+                mModules.get(annotation.name()),
+                annotation.name()
+                    + " could not be found. Is it defined in "
+                    + moduleInterface.getName())
+            .getModule();
+  }
+
+  public boolean hasModule(String name) {
+    return mModules.containsKey(name);
+  }
+
+  public NativeModule getModule(String name) {
+    return Assertions.assertNotNull(
+        mModules.get(name), "Could not find module with name " + name).getModule();
   }
 
   public List<NativeModule> getAllModules() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NoSuchKeyException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NoSuchKeyException.java
index e1b1e2829acbf8..56488cc11c5425 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NoSuchKeyException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NoSuchKeyException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/NotThreadSafeBridgeIdleDebugListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/NotThreadSafeBridgeIdleDebugListener.java
index 2531b9793b5d48..680702561a55ae 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/NotThreadSafeBridgeIdleDebugListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/NotThreadSafeBridgeIdleDebugListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ObjectAlreadyConsumedException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ObjectAlreadyConsumedException.java
index 4faaa4fe363108..720cc2ac9fee62 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ObjectAlreadyConsumedException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ObjectAlreadyConsumedException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/OnBatchCompleteListener.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/OnBatchCompleteListener.java
index 5448bc8fd06ad5..e785ab843e0096 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/OnBatchCompleteListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/OnBatchCompleteListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/PerformanceCounter.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/PerformanceCounter.java
index 984eb785904650..645851c9316535 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/PerformanceCounter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/PerformanceCounter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Promise.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Promise.java
index aa8c3bee4a83fb..27d4d697cf86af 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Promise.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Promise.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,48 +7,119 @@
 
 package com.facebook.react.bridge;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
-/**
+/*
  * Interface that represents a JavaScript Promise which can be passed to the native module as a
  * method parameter.
  *
- * Methods annotated with {@link ReactMethod} that use {@link Promise} as type of the last parameter
+ * Methods annotated with {@link ReactMethod} that use a {@link Promise} as the last parameter
  * will be marked as "promise" and will return a promise when invoked from JavaScript.
  */
 public interface Promise {
 
   /**
-   * Successfully resolve the Promise.
+   * Successfully resolve the Promise with an optional value.
+   *
+   * @param value Object
    */
   void resolve(@Nullable Object value);
 
   /**
-   * Report an error which wasn't caused by an exception.
+   * Report an error without an exception using a custom code and error message.
+   *
+   * @param code    String
+   * @param message String
    */
   void reject(String code, String message);
 
   /**
-   * Report an exception.
+   * Report an exception with a custom code.
+   *
+   * @param code      String
+   * @param throwable Throwable
    */
-  void reject(String code, Throwable e);
+  void reject(String code, Throwable throwable);
 
   /**
-   * Report an exception with a custom error message.
+   * Report an exception with a custom code and error message.
+   *
+   * @param code      String
+   * @param message   String
+   * @param throwable Throwable
    */
-  void reject(String code, String message, Throwable e);
+  void reject(String code, String message, Throwable throwable);
+
 
   /**
-   * Report an error which wasn't caused by an exception.
-   * @deprecated Prefer passing a module-specific error code to JS.
-   *             Using this method will pass the error code "EUNSPECIFIED".
+   * Report an exception, with default error code.
+   * Useful in catch-all scenarios where it's unclear why the error occurred.
+   *
+   * @param throwable Throwable
    */
-  @Deprecated
-  void reject(String message);
+  void reject(Throwable throwable);
+
+  /* ---------------------------
+   *  With userInfo WritableMap
+   * --------------------------- */
 
   /**
-   * Report an exception, with default error code.
+   * Report an exception, with default error code, with userInfo.
    * Useful in catch-all scenarios where it's unclear why the error occurred.
+   *
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
+  void reject(Throwable throwable, WritableMap userInfo);
+
+  /**
+   * Reject with a code and userInfo WritableMap.
+   *
+   * @param code     String
+   * @param userInfo WritableMap
    */
-  void reject(Throwable reason);
+  void reject(String code, @Nonnull WritableMap userInfo);
+
+  /**
+   * Report an exception with a custom code and userInfo.
+   *
+   * @param code      String
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
+  void reject(String code, Throwable throwable, WritableMap userInfo);
+
+  /**
+   * Report an error with a custom code, error message and userInfo,
+   * an error not caused by an exception.
+   *
+   * @param code     String
+   * @param message  String
+   * @param userInfo WritableMap
+   */
+  void reject(String code, String message, @Nonnull WritableMap userInfo);
+
+  /**
+   * Report an exception with a custom code, error message and userInfo.
+   *
+   * @param code      String
+   * @param message   String
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
+  void reject(String code, String message, Throwable throwable, WritableMap userInfo);
+
+  /* ------------
+   *  Deprecated
+   * ------------ */
+
+  /**
+   * Report an error which wasn't caused by an exception.
+   *
+   * @deprecated Prefer passing a module-specific error code to JS.
+   * Using this method will pass the error code "EUNSPECIFIED".
+   */
+  @Deprecated
+  void reject(String message);
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/PromiseImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/PromiseImpl.java
index 1ee2380ff8bba6..4c67957eda7e33 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/PromiseImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/PromiseImpl.java
@@ -1,71 +1,246 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-/**
- * Implementation of two javascript functions that can be used to resolve or reject a js promise.
- */
 package com.facebook.react.bridge;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+/*
+ * Implementation of {@link Promise} that represents a JavaScript Promise which can be passed to the
+ * native module as a method parameter.
+ *
+ * Methods annotated with {@link ReactMethod} that use a {@link Promise} as the last parameter
+ * will be marked as "promise" and will return a promise when invoked from JavaScript.
+ */
 public class PromiseImpl implements Promise {
+  // Number of stack frames to parse and return to mReject.invoke
+  // for ERROR_MAP_KEY_NATIVE_STACK
+  private static final int ERROR_STACK_FRAME_LIMIT = 10;
+
+  private static final String ERROR_DEFAULT_CODE = "EUNSPECIFIED";
+  private static final String ERROR_DEFAULT_MESSAGE = "Error not specified.";
 
-  private static final String DEFAULT_ERROR = "EUNSPECIFIED";
+  // Keys for mReject's WritableMap
+  private static final String ERROR_MAP_KEY_CODE = "code";
+  private static final String ERROR_MAP_KEY_MESSAGE = "message";
+  private static final String ERROR_MAP_KEY_USER_INFO = "userInfo";
+  private static final String ERROR_MAP_KEY_NATIVE_STACK = "nativeStackAndroid";
 
-  private @Nullable Callback mResolve;
-  private @Nullable Callback mReject;
+  // Keys for ERROR_MAP_KEY_NATIVE_STACK's StackFrame maps
+  private static final String STACK_FRAME_KEY_FILE = "file";
+  private static final String STACK_FRAME_KEY_LINE_NUMBER = "lineNumber";
+  private static final String STACK_FRAME_KEY_METHOD_NAME = "methodName";
+
+  private @Nullable
+  Callback mResolve;
+  private @Nullable
+  Callback mReject;
 
   public PromiseImpl(@Nullable Callback resolve, @Nullable Callback reject) {
     mResolve = resolve;
     mReject = reject;
   }
 
+  /**
+   * Successfully resolve the Promise with an optional value.
+   *
+   * @param value Object
+   */
   @Override
   public void resolve(Object value) {
     if (mResolve != null) {
       mResolve.invoke(value);
+      mResolve = null;
+      mReject = null;
     }
   }
 
+  /**
+   * Report an error without an exception using a custom code and error message.
+   *
+   * @param code    String
+   * @param message String
+   */
   @Override
   public void reject(String code, String message) {
-    reject(code, message, /*Throwable*/null);
+    reject(code, message, /*Throwable*/null, /*WritableMap*/null);
   }
 
+  /**
+   * Report an exception with a custom code.
+   *
+   * @param code      String
+   * @param throwable Throwable
+   */
   @Override
-  @Deprecated
-  public void reject(String message) {
-    reject(DEFAULT_ERROR, message, /*Throwable*/null);
+  public void reject(String code, Throwable throwable) {
+    reject(code, /*Message*/null, throwable, /*WritableMap*/null);
+  }
+
+  /**
+   * Report an exception with a custom code and error message.
+   *
+   * @param code      String
+   * @param message   String
+   * @param throwable Throwable
+   */
+  @Override
+  public void reject(String code, String message, Throwable throwable) {
+    reject(code, message, throwable, /*WritableMap*/null);
+  }
+
+  /**
+   * Report an exception, with default error code.
+   * Useful in catch-all scenarios where it's unclear why the error occurred.
+   *
+   * @param throwable Throwable
+   */
+  @Override
+  public void reject(Throwable throwable) {
+    reject(/*Code*/null, /*Message*/null, throwable, /*WritableMap*/null);
+  }
+
+  /* ---------------------------
+   *  With userInfo WritableMap
+   * --------------------------- */
+
+  /**
+   * Report an exception, with default error code, with userInfo.
+   * Useful in catch-all scenarios where it's unclear why the error occurred.
+   *
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
+  @Override
+  public void reject(Throwable throwable, WritableMap userInfo) {
+    reject(/*Code*/null, /*Message*/null, throwable, userInfo);
   }
 
+  /**
+   * Reject with a code and userInfo WritableMap.
+   *
+   * @param code     String
+   * @param userInfo WritableMap
+   */
   @Override
-  public void reject(String code, Throwable e) {
-    reject(code, e.getMessage(), e);
+  public void reject(String code, @Nonnull WritableMap userInfo) {
+    reject(code, /*Message*/null, /*Throwable*/null, userInfo);
   }
 
+  /**
+   * Report an exception with a custom code and userInfo.
+   *
+   * @param code      String
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
   @Override
-  public void reject(Throwable e) {
-    reject(DEFAULT_ERROR, e.getMessage(), e);
+  public void reject(String code, Throwable throwable, WritableMap userInfo) {
+    reject(code, /*Message*/null, throwable, userInfo);
   }
 
+  /**
+   * Report an error with a custom code, error message and userInfo,
+   * an error not caused by an exception.
+   *
+   * @param code     String
+   * @param message  String
+   * @param userInfo WritableMap
+   */
   @Override
-  public void reject(String code, String message, @Nullable Throwable e) {
-    if (mReject != null) {
-      if (code == null) {
-        code = DEFAULT_ERROR;
+  public void reject(String code, String message, @Nonnull WritableMap userInfo) {
+    reject(code, message, /*Throwable*/null, userInfo);
+  }
+
+  /**
+   * Report an exception with a custom code, error message and userInfo.
+   *
+   * @param code      String
+   * @param message   String
+   * @param throwable Throwable
+   * @param userInfo  WritableMap
+   */
+  @Override
+  public void reject(
+      @Nullable String code,
+      @Nullable String message,
+      @Nullable Throwable throwable,
+      @Nullable WritableMap userInfo
+  ) {
+    if (mReject == null) {
+      mResolve = null;
+      return;
+    }
+
+    WritableNativeMap errorInfo = new WritableNativeMap();
+
+    if (code == null) {
+      errorInfo.putString(ERROR_MAP_KEY_CODE, ERROR_DEFAULT_CODE);
+    } else {
+      errorInfo.putString(ERROR_MAP_KEY_CODE, code);
+    }
+
+    // Use the custom message if provided otherwise use the throwable message.
+    if (message != null) {
+      errorInfo.putString(ERROR_MAP_KEY_MESSAGE, message);
+    } else if (throwable != null) {
+      errorInfo.putString(ERROR_MAP_KEY_MESSAGE, throwable.getMessage());
+    } else {
+      // The JavaScript side expects a map with at least an error message.
+      // /Libraries/BatchedBridge/NativeModules.js -> createErrorFromErrorData
+      // TYPE: (errorData: { message: string })
+      errorInfo.putString(ERROR_MAP_KEY_MESSAGE, ERROR_DEFAULT_MESSAGE);
+    }
+
+    // For consistency with iOS ensure userInfo key exists, even if we null it.
+    // iOS: /React/Base/RCTUtils.m -> RCTJSErrorFromCodeMessageAndNSError
+    if (userInfo != null) {
+      errorInfo.putMap(ERROR_MAP_KEY_USER_INFO, userInfo);
+    } else {
+      errorInfo.putNull(ERROR_MAP_KEY_USER_INFO);
+    }
+
+    // Attach a nativeStackAndroid array if a throwable was passed
+    // this matches iOS behavior - iOS adds a `nativeStackIOS` property
+    // iOS: /React/Base/RCTUtils.m -> RCTJSErrorFromCodeMessageAndNSError
+    if (throwable != null) {
+      StackTraceElement[] stackTrace = throwable.getStackTrace();
+      WritableNativeArray nativeStackAndroid = new WritableNativeArray();
+
+      // Build an an Array of StackFrames to match JavaScript:
+      // iOS: /Libraries/Core/Devtools/parseErrorStack.js -> StackFrame
+      for (int i = 0; i < stackTrace.length && i < ERROR_STACK_FRAME_LIMIT; i++) {
+        StackTraceElement frame = stackTrace[i];
+        WritableMap frameMap = new WritableNativeMap();
+        // NOTE: no column number exists StackTraceElement
+        frameMap.putString(STACK_FRAME_KEY_FILE, frame.getFileName());
+        frameMap.putInt(STACK_FRAME_KEY_LINE_NUMBER, frame.getLineNumber());
+        frameMap.putString(STACK_FRAME_KEY_METHOD_NAME, frame.getMethodName());
+        nativeStackAndroid.pushMap(frameMap);
       }
-      // The JavaScript side expects a map with at least the error message.
-      // It is possible to expose all kind of information. It will be available on the JS
-      // error instance.
-      WritableNativeMap errorInfo = new WritableNativeMap();
-      errorInfo.putString("code", code);
-      errorInfo.putString("message", message);
-      // TODO(8850038): add the stack trace info in, need to figure out way to serialize that
-      mReject.invoke(errorInfo);
+
+      errorInfo.putArray(ERROR_MAP_KEY_NATIVE_STACK, nativeStackAndroid);
+    } else {
+      errorInfo.putArray(ERROR_MAP_KEY_NATIVE_STACK, new WritableNativeArray());
     }
+
+    mReject.invoke(errorInfo);
+    mResolve = null;
+    mReject = null;
+  }
+
+  /* ------------
+   *  Deprecated
+   * ------------ */
+
+  @Override
+  @Deprecated
+  public void reject(String message) {
+    reject(/*Code*/null, message, /*Throwable*/null, /*WritableMap*/null);
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ProxyJavaScriptExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ProxyJavaScriptExecutor.java
index 5442daa3a96c75..ea5d126f799d1b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ProxyJavaScriptExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ProxyJavaScriptExecutor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,9 @@
 
 package com.facebook.react.bridge;
 
-import javax.annotation.Nullable;
-
 import com.facebook.jni.HybridData;
 import com.facebook.proguard.annotations.DoNotStrip;
+import javax.annotation.Nullable;
 
 /**
  * JavaScript executor that delegates JS calls processed by native code back to a java version
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactApplicationContext.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactApplicationContext.java
index 1d33a2d24a2e2a..f94c238275147b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactApplicationContext.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactApplicationContext.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactBridge.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactBridge.java
index 5ca66f5ad39390..d292d3d43a7722 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactBridge.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactBridge.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,16 @@
 
 package com.facebook.react.bridge;
 
-import android.util.Log;
+import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
 
-import com.facebook.react.common.ReactConstants;
+import android.os.SystemClock;
 import com.facebook.soloader.SoLoader;
+import com.facebook.systrace.Systrace;
 
 public class ReactBridge {
+  private static volatile long sLoadStartTime = 0;
+  private static volatile long sLoadEndTime = 0;
+
   private static boolean sDidInit = false;
 
   // Office implementation of RN can work with two JS Engines: V8 and JSC.
@@ -21,26 +25,39 @@ public class ReactBridge {
   private static boolean sUseJSC = false;
 
   public static void staticInit() {
-    // No locking required here, worst case we'll call into SoLoader twice
-    // which will do its own locking internally
-    if (!sDidInit) {
-      if (sUseJSC) {
-        SoLoader.loadLibrary("icu_common");
-        SoLoader.loadLibrary("jsc");
-      }
-      else {
-        SoLoader.loadLibrary("v8_libbase.cr");
-        SoLoader.loadLibrary("v8_libplatform.cr");
-        SoLoader.loadLibrary("v8.cr");
-      }
-
-      SoLoader.loadLibrary("glog_init");
-      SoLoader.loadLibrary("privatedata");
-      SoLoader.loadLibrary("fb");
-      SoLoader.loadLibrary("yoga");
-      SoLoader.loadLibrary("reactnativejni");
-      sDidInit = true;
+    if (sDidInit) {
+      return;
+    }
+    sDidInit = true;
+
+    sLoadStartTime = SystemClock.uptimeMillis();
+    Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "ReactBridge.staticInit::load:reactnativejni");
+
+    if (sUseJSC) {
+      SoLoader.loadLibrary("icu_common");
+      SoLoader.loadLibrary("jsc");
+    }
+    else {
+      SoLoader.loadLibrary("v8_libbase.cr");
+      SoLoader.loadLibrary("v8_libplatform.cr");
+      SoLoader.loadLibrary("v8.cr");
     }
+
+    SoLoader.loadLibrary("glog_init");
+    SoLoader.loadLibrary("privatedata");
+    SoLoader.loadLibrary("fb");
+    SoLoader.loadLibrary("yoga");
+    SoLoader.loadLibrary("reactnativejni");
+    Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
+    sLoadEndTime = SystemClock.uptimeMillis();
+  }
+
+  public static long getLoadStartTime() {
+    return sLoadStartTime;
+  }
+
+  public static long getLoadEndTime() {
+    return sLoadEndTime;
   }
 
   public static void useJSC() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactCallback.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactCallback.java
index 7cd1e898142857..bc690b52a7e23c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactCallback.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactCallback.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContext.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContext.java
index 6818d17727fe25..d83fe1be13db05 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContext.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContext.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContextBaseJavaModule.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContextBaseJavaModule.java
index 2a7c4482136ff6..00ff1173067613 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContextBaseJavaModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactContextBaseJavaModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarker.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarker.java
index efc480dc47c1a8..d3f3e9f22505e5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarker.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarker.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
index 7b2db1da029c41..99ab7a210b9a76 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMarkerConstants.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -25,6 +25,7 @@ public enum ReactMarkerConstants {
   NATIVE_MODULE_INITIALIZE_END,
   SETUP_REACT_CONTEXT_START,
   SETUP_REACT_CONTEXT_END,
+  CHANGE_THREAD_PRIORITY,
   CREATE_UI_MANAGER_MODULE_START,
   CREATE_UI_MANAGER_MODULE_END,
   CREATE_VIEW_MANAGERS_START,
@@ -90,4 +91,8 @@ public enum ReactMarkerConstants {
   BYTECODE_CREATION_FAILED,
   BYTECODE_READ_FAILED,
   BYTECODE_WRITE_FAILED,
+  VM_INIT,
+  ON_FRAGMENT_CREATE,
+  JAVASCRIPT_EXECUTOR_FACTORY_INJECT_START,
+  JAVASCRIPT_EXECUTOR_FACTORY_INJECT_END,
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMethod.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMethod.java
index 1a15f6ab31432f..2f52f534db90b8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMethod.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactMethod.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactModuleWithSpec.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactModuleWithSpec.java
index e7dac2d49593e5..716b2a3f6f5639 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactModuleWithSpec.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReactModuleWithSpec.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableArray.java
index f4e17403f27cfa..3a7a31517e15ab 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMap.java
index 1af1631b8a353b..bad731e709c099 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMapKeySetIterator.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMapKeySetIterator.java
index fad9c994ed728c..c4cfbe019e4a3e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMapKeySetIterator.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableMapKeySetIterator.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeArray.java
index 2e2b13f1bcc178..80f360adc1d63f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,12 @@
 
 package com.facebook.react.bridge;
 
+import com.facebook.infer.annotation.Assertions;
 import com.facebook.jni.HybridData;
 import com.facebook.proguard.annotations.DoNotStrip;
-
+import com.facebook.react.config.ReactFeatureFlags;
 import java.util.ArrayList;
 import java.util.Arrays;
-import com.facebook.infer.annotation.Assertions;
 import javax.annotation.Nullable;
 
 /**
@@ -34,9 +34,8 @@ protected ReadableNativeArray(HybridData hybridData) {
   private @Nullable ReadableType[] mLocalTypeArray;
 
   private static int jniPassCounter = 0;
-  private static boolean mUseNativeAccessor = false;
   public static void setUseNativeAccessor(boolean useNativeAccessor) {
-    mUseNativeAccessor = useNativeAccessor;
+    ReactFeatureFlags.useArrayNativeAccessor = useNativeAccessor;
   }
   public static int getJNIPassCounter() {
     return jniPassCounter;
@@ -77,7 +76,7 @@ private ReadableType[] getLocalTypeArray() {
 
   @Override
   public int size() {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return sizeNative();
     }
@@ -87,7 +86,7 @@ public int size() {
 
   @Override
   public boolean isNull(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return isNullNative(index);
     }
@@ -97,7 +96,7 @@ public boolean isNull(int index) {
 
   @Override
   public boolean getBoolean(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getBooleanNative(index);
     }
@@ -107,7 +106,7 @@ public boolean getBoolean(int index) {
 
   @Override
   public double getDouble(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getDoubleNative(index);
     }
@@ -117,7 +116,7 @@ public double getDouble(int index) {
 
   @Override
   public int getInt(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getIntNative(index);
     }
@@ -127,7 +126,7 @@ public int getInt(int index) {
 
   @Override
   public String getString(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getStringNative(index);
     }
@@ -137,7 +136,7 @@ public String getString(int index) {
 
   @Override
   public ReadableNativeArray getArray(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getArrayNative(index);
     }
@@ -147,7 +146,7 @@ public ReadableNativeArray getArray(int index) {
 
   @Override
   public ReadableNativeMap getMap(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getMapNative(index);
     }
@@ -157,7 +156,7 @@ public ReadableNativeMap getMap(int index) {
 
   @Override
   public ReadableType getType(int index) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useArrayNativeAccessor) {
       jniPassCounter++;
       return getTypeNative(index);
     }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeMap.java
index 40cbe0d8d22fe7..1ece8d666b0a44 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableNativeMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,12 @@
 
 package com.facebook.react.bridge;
 
+import com.facebook.infer.annotation.Assertions;
 import com.facebook.jni.HybridData;
 import com.facebook.proguard.annotations.DoNotStrip;
-
+import com.facebook.react.config.ReactFeatureFlags;
 import java.util.HashMap;
 import java.util.Iterator;
-
-import com.facebook.infer.annotation.Assertions;
 import javax.annotation.Nullable;
 
 /**
@@ -33,10 +32,9 @@ protected ReadableNativeMap(HybridData hybridData) {
   private @Nullable String[] mKeys;
   private @Nullable HashMap<String,Object> mLocalMap;
   private @Nullable HashMap<String,ReadableType> mLocalTypeMap;
-  private static boolean mUseNativeAccessor;
   private static int mJniCallCounter;
   public static void setUseNativeAccessor(boolean useNativeAccessor) {
-    mUseNativeAccessor = useNativeAccessor;
+    ReactFeatureFlags.useMapNativeAccessor = useNativeAccessor;
   }
   public static int getJNIPassCounter() {
     return mJniCallCounter;
@@ -94,7 +92,7 @@ private HashMap<String,ReadableType> getLocalTypeMap() {
 
   @Override
   public boolean hasKey(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return hasKeyNative(name);
     }
@@ -104,7 +102,7 @@ public boolean hasKey(String name) {
 
   @Override
   public boolean isNull(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return isNullNative(name);
     }
@@ -151,7 +149,7 @@ private void checkInstance(String name, Object value, Class type) {
 
   @Override
   public boolean getBoolean(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getBooleanNative(name);
     }
@@ -161,7 +159,7 @@ public boolean getBoolean(String name) {
 
   @Override
   public double getDouble(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getDoubleNative(name);
     }
@@ -171,7 +169,7 @@ public double getDouble(String name) {
 
   @Override
   public int getInt(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getIntNative(name);
     }
@@ -183,7 +181,7 @@ public int getInt(String name) {
 
   @Override
   public @Nullable String getString(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getStringNative(name);
     }
@@ -193,7 +191,7 @@ public int getInt(String name) {
 
   @Override
   public @Nullable ReadableArray getArray(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getArrayNative(name);
     }
@@ -203,7 +201,7 @@ public int getInt(String name) {
 
   @Override
   public @Nullable ReadableNativeMap getMap(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getMapNative(name);
     }
@@ -213,7 +211,7 @@ public int getInt(String name) {
 
   @Override
   public ReadableType getType(String name) {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       mJniCallCounter++;
       return getTypeNative(name);
     }
@@ -236,7 +234,7 @@ public ReadableMapKeySetIterator keySetIterator() {
 
   @Override
   public HashMap<String, Object> toHashMap() {
-    if (mUseNativeAccessor) {
+    if (ReactFeatureFlags.useMapNativeAccessor) {
       ReadableMapKeySetIterator iterator = keySetIterator();
       HashMap<String, Object> hashMap = new HashMap<>();
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableType.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableType.java
index b1a9057e8e198b..9845f33f588b37 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/ReadableType.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/SoftAssertions.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/SoftAssertions.java
index b9093263671655..168b67d62bc638 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/SoftAssertions.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/SoftAssertions.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/Systrace.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/Systrace.java
index cd5c4615a5b813..8f0520844ae32d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/Systrace.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/Systrace.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/UIManager.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/UIManager.java
index e08133ded2566f..d367a6a9dbcbf7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/UIManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/UIManager.java
@@ -1,5 +1,13 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.bridge;
 
+import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.uimanager.common.MeasureSpecProvider;
 import com.facebook.react.uimanager.common.SizeMonitoringFrameLayout;
 
@@ -10,7 +18,12 @@ public interface UIManager extends JSIModule, PerformanceCounter {
   /**
    * Registers a new root view.
    */
-  <T extends SizeMonitoringFrameLayout & MeasureSpecProvider> int addRootView(final T rootView);
+  <T extends SizeMonitoringFrameLayout & MeasureSpecProvider> int addRootView(final T rootView, WritableMap initialProps, @Nullable String initialUITemplate);
+
+  /**
+   * Unregisters a new root view.
+   */
+  void removeRootView(int reactRootTag);
 
   /**
    * Updates the layout specs of the RootShadowNode based on the Measure specs received by
@@ -21,7 +34,7 @@ public interface UIManager extends JSIModule, PerformanceCounter {
   /**
    * Dispatches the commandId received by parameter to the view associated with the reactTag.
    * The command will be processed in the UIThread.
-   * 
+   *
    * @param reactTag {@link int} that identifies the view that will receive this command
    * @param commandId {@link int} command id
    * @param commandArgs {@link ReadableArray} parameters associated with the command
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/UiThreadUtil.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/UiThreadUtil.java
index 292efedd310196..3adf9b8359e6f3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/UiThreadUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/UiThreadUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/UnexpectedNativeTypeException.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/UnexpectedNativeTypeException.java
index f15e4886a19b03..c5400ddbae0983 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/UnexpectedNativeTypeException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/UnexpectedNativeTypeException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableArray.java
index 0b7b5d175d5e36..f0006c81df447f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java
index 62073f177ca2db..1aaef7cc51d25f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeArray.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeArray.java
index 90bd2de5add358..074446485c282f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeMap.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeMap.java
index e10caeb95c28c5..4c7365a53810dd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/WritableNativeMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/bridge.pro b/ReactAndroid/src/main/java/com/facebook/react/bridge/bridge.pro
index a03ce0287e5e84..028d56d0782864 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/bridge.pro
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/bridge.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 ## Putting this here is kind of a hack.  I don't want to modify the OSS bridge.
 ## TODO mhorowitz: add @DoNotStrip to the interface directly.
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThread.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThread.java
index 2449cafb726c37..732d2f897ceed2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThread.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThread.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadHandler.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadHandler.java
index d2be287f9e338c..d62247b845b751 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadImpl.java
index be06d0615ba44d..d169a578e70c4e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadSpec.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadSpec.java
index c9df9ca5436c78..bc48673a1b68c2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadSpec.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/MessageQueueThreadSpec.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnable.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnable.java
index f474e8f972e350..c5b0e2e0405ea6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnable.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnable.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnableDeprecated.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnableDeprecated.java
index 4da397799cef42..2f8a2e5e914ea5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnableDeprecated.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/NativeRunnableDeprecated.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/QueueThreadExceptionHandler.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/QueueThreadExceptionHandler.java
index 4139da528c47d6..f0f08a3cccd9bb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/QueueThreadExceptionHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/QueueThreadExceptionHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfiguration.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfiguration.java
index 010dc872daef44..5a666785553a7a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfiguration.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfiguration.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationImpl.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationImpl.java
index cc02e072190d41..4388949362c258 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationSpec.java b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationSpec.java
index d49a26b5434c2d..f81deff7c75226 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationSpec.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/queue/ReactQueueConfigurationSpec.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/bridge/reactnative.pro b/ReactAndroid/src/main/java/com/facebook/react/bridge/reactnative.pro
index 2625c0032a0f9e..4031578963f7cb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/bridge/reactnative.pro
+++ b/ReactAndroid/src/main/java/com/facebook/react/bridge/reactnative.pro
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 -keepnames class * extends com.facebook.react.bridge.JavaScriptModule { *; }
 -keepnames class * extends com.facebook.react.bridge.CxxModuleWrapper {*; }
 -keepclassmembers class * extends com.facebook.react.bridge.NativeModule {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/ArrayUtils.java b/ReactAndroid/src/main/java/com/facebook/react/common/ArrayUtils.java
index 5b2f32023c1c8f..b689d8b0ad9ea1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/ArrayUtils.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/ArrayUtils.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.common;
 
 import java.util.Arrays;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/BUCK b/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
index 5dc83669ae310b..871d93ed0696f9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_build_config", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_build_config", "rn_android_library")
 
 SUB_PROJECTS = [
     "network/**/*",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/ClearableSynchronizedPool.java b/ReactAndroid/src/main/java/com/facebook/react/common/ClearableSynchronizedPool.java
index 5d12c9f16d40c6..2b296f71400a4b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/ClearableSynchronizedPool.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/ClearableSynchronizedPool.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/DebugServerException.java b/ReactAndroid/src/main/java/com/facebook/react/common/DebugServerException.java
index 4c10cb114f99cd..bc2423b665b8ce 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/DebugServerException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/DebugServerException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/JavascriptException.java b/ReactAndroid/src/main/java/com/facebook/react/common/JavascriptException.java
index ecb1ba83eca3ea..52a56e93b68455 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/JavascriptException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/JavascriptException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.java b/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.java
index 45402ab0da5a56..656d77d9678eb4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/LongArray.java b/ReactAndroid/src/main/java/com/facebook/react/common/LongArray.java
index 883bd714ceabb6..9b6191182fd8fe 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/LongArray.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/LongArray.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/MapBuilder.java b/ReactAndroid/src/main/java/com/facebook/react/common/MapBuilder.java
index 151fbf144d0fcc..5c668ad14cd5a5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/MapBuilder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/MapBuilder.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/ReactConstants.java b/ReactAndroid/src/main/java/com/facebook/react/common/ReactConstants.java
index eae26cdebb35b6..83ca41a2a99c84 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/ReactConstants.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/ReactConstants.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/ShakeDetector.java b/ReactAndroid/src/main/java/com/facebook/react/common/ShakeDetector.java
index ad45c64d2d5dfd..01a0da121d66ac 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/ShakeDetector.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/ShakeDetector.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/SingleThreadAsserter.java b/ReactAndroid/src/main/java/com/facebook/react/common/SingleThreadAsserter.java
index 3f541304849041..63a1ea638752e0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/SingleThreadAsserter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/SingleThreadAsserter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/StandardCharsets.java b/ReactAndroid/src/main/java/com/facebook/react/common/StandardCharsets.java
index 0c26d6c499db81..8246db9dc956b7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/StandardCharsets.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/StandardCharsets.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/SystemClock.java b/ReactAndroid/src/main/java/com/facebook/react/common/SystemClock.java
index 4877b64ea9765f..ce7cc73baf6996 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/SystemClock.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/SystemClock.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/annotations/VisibleForTesting.java b/ReactAndroid/src/main/java/com/facebook/react/common/annotations/VisibleForTesting.java
index 4d77e7f3a05dce..5a8cb0e98fd9ae 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/annotations/VisibleForTesting.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/annotations/VisibleForTesting.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.java b/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.java
index dcbc7c8fd26df0..f2ea5a6a4b0378 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/futures/SimpleSettableFuture.java b/ReactAndroid/src/main/java/com/facebook/react/common/futures/SimpleSettableFuture.java
index aca28f748fe7db..d220e2efe41025 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/futures/SimpleSettableFuture.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/futures/SimpleSettableFuture.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/network/BUCK b/ReactAndroid/src/main/java/com/facebook/react/common/network/BUCK
index ae1b2ae7f656f9..934c22700dffe1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/network/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/network/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "network",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/network/OkHttpCallUtil.java b/ReactAndroid/src/main/java/com/facebook/react/common/network/OkHttpCallUtil.java
index e7b5380a1c56b3..82d24461ad1c04 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/network/OkHttpCallUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/network/OkHttpCallUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/config/BUCK b/ReactAndroid/src/main/java/com/facebook/react/config/BUCK
new file mode 100644
index 00000000000000..82c24dc8158a27
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/config/BUCK
@@ -0,0 +1,11 @@
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library")
+
+rn_android_library(
+    name = "config",
+    srcs = glob(["**/*.java"]),
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = [
+    ],
+)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java b/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java
new file mode 100644
index 00000000000000..be48e96bc6188b
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java
@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.config;
+
+/**
+ * Hi there, traveller! This configuration class is not meant to be used by end-users of RN. It
+ * contains mainly flags for features that are either under active development and not ready for
+ * public consumption, or for use in experiments.
+ *
+ * These values are safe defaults and should not require manual changes.
+ */
+public class ReactFeatureFlags {
+
+  /**
+   * Whether we should load a specific view manager immediately or when it is accessed by JS
+   */
+  public static boolean lazilyLoadViewManagers = false;
+
+  /**
+   * Reduce the number of Java-JS interops while accessing native arrays
+   */
+  public static boolean useArrayNativeAccessor = false;
+
+  /**
+   * Reduce the number of Java-JS interops while accessing native maps
+   */
+  public static boolean useMapNativeAccessor = false;
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BUCK b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BUCK
index 16336b6e1be936..c55a87ca0183f9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BUCK
@@ -1,9 +1,12 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "devsupport",
     srcs = glob(["*.java"]),
     manifest = "AndroidManifest.xml",
+    provided_deps = [
+        react_native_dep("third-party/android/support/v4:lib-support-v4"),
+    ],
     visibility = [
         "PUBLIC",
     ],
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDeltaClient.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDeltaClient.java
index 93fbb49679e753..bdc6d084407124 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDeltaClient.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDeltaClient.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2018-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,7 +25,7 @@
 public abstract class BundleDeltaClient {
 
   private static final String METRO_DELTA_ID_HEADER = "X-Metro-Delta-ID";
-  @Nullable private String mDeltaId;
+  @Nullable private String mRevisionId;
 
   public enum ClientType {
     NONE,
@@ -54,46 +54,45 @@ abstract protected Pair<Boolean, NativeDeltaClient> processDelta(
     BufferedSource body,
     File outputFile) throws IOException;
 
-  final public String extendUrlForDelta(String bundleURL) {
-    return mDeltaId != null ? bundleURL + "&deltaBundleId=" + mDeltaId : bundleURL;
+  final public synchronized String extendUrlForDelta(String bundleURL) {
+    return mRevisionId != null ? bundleURL + "&revisionId=" + mRevisionId : bundleURL;
   }
 
-  public void reset() {
-    mDeltaId = null;
+  public synchronized void reset() {
+    mRevisionId = null;
   }
 
-  public Pair<Boolean, NativeDeltaClient> processDelta(
+  public synchronized Pair<Boolean, NativeDeltaClient> processDelta(
     Headers headers,
     BufferedSource body,
     File outputFile) throws IOException {
 
-    mDeltaId = headers.get(METRO_DELTA_ID_HEADER);
+    mRevisionId = headers.get(METRO_DELTA_ID_HEADER);
     return processDelta(body, outputFile);
   }
 
   private static class BundleDeltaJavaClient extends BundleDeltaClient {
 
-    final LinkedHashMap<Number, byte[]> mPreModules = new LinkedHashMap<Number, byte[]>();
-    final LinkedHashMap<Number, byte[]> mDeltaModules = new LinkedHashMap<Number, byte[]>();
-    final LinkedHashMap<Number, byte[]> mPostModules = new LinkedHashMap<Number, byte[]>();
+    byte[] mPreCode;
+    byte[] mPostCode;
+    final LinkedHashMap<Number, byte[]> mModules = new LinkedHashMap<Number, byte[]>();
 
     @Override
     public boolean canHandle(ClientType type) {
       return type == ClientType.DEV_SUPPORT;
     }
 
-    public void reset() {
+    public synchronized void reset() {
       super.reset();
-      mDeltaModules.clear();
-      mPreModules.clear();
-      mPostModules.clear();
+      mPreCode = null;
+      mPostCode = null;
+      mModules.clear();
     }
 
     @Override
     public synchronized Pair<Boolean, NativeDeltaClient> processDelta(
       BufferedSource body,
       File outputFile) throws IOException {
-
       JsonReader jsonReader = new JsonReader(new InputStreamReader(body.inputStream()));
       jsonReader.beginObject();
       int numChangedModules = 0;
@@ -101,11 +100,13 @@ public synchronized Pair<Boolean, NativeDeltaClient> processDelta(
       while (jsonReader.hasNext()) {
         String name = jsonReader.nextName();
         if (name.equals("pre")) {
-          numChangedModules += patchDelta(jsonReader, mPreModules);
+          mPreCode = jsonReader.nextString().getBytes();
         } else if (name.equals("post")) {
-          numChangedModules += patchDelta(jsonReader, mPostModules);
-        } else if (name.equals("delta")) {
-          numChangedModules += patchDelta(jsonReader, mDeltaModules);
+          mPostCode = jsonReader.nextString().getBytes();
+        } else if (name.equals("modules")) {
+          numChangedModules += setModules(jsonReader, mModules);
+        } else if (name.equals("deleted")) {
+          numChangedModules += removeModules(jsonReader, mModules);
         } else {
           jsonReader.skipValue();
         }
@@ -123,20 +124,16 @@ public synchronized Pair<Boolean, NativeDeltaClient> processDelta(
       FileOutputStream fileOutputStream = new FileOutputStream(outputFile);
 
       try {
-        for (byte[] code : mPreModules.values()) {
-          fileOutputStream.write(code);
-          fileOutputStream.write('\n');
-        }
+        fileOutputStream.write(mPreCode);
+        fileOutputStream.write('\n');
 
-        for (byte[] code : mDeltaModules.values()) {
+        for (byte[] code : mModules.values()) {
           fileOutputStream.write(code);
           fileOutputStream.write('\n');
         }
 
-        for (byte[] code : mPostModules.values()) {
-          fileOutputStream.write(code);
-          fileOutputStream.write('\n');
-        }
+        fileOutputStream.write(mPostCode);
+        fileOutputStream.write('\n');
       } finally {
         fileOutputStream.flush();
         fileOutputStream.close();
@@ -145,7 +142,7 @@ public synchronized Pair<Boolean, NativeDeltaClient> processDelta(
       return Pair.create(Boolean.TRUE, null);
     }
 
-    private static int patchDelta(JsonReader jsonReader, LinkedHashMap<Number, byte[]> map)
+    private static int setModules(JsonReader jsonReader, LinkedHashMap<Number, byte[]> map)
       throws IOException {
       jsonReader.beginArray();
 
@@ -155,12 +152,7 @@ private static int patchDelta(JsonReader jsonReader, LinkedHashMap<Number, byte[
 
         int moduleId = jsonReader.nextInt();
 
-        if (jsonReader.peek() == JsonToken.NULL) {
-          jsonReader.skipValue();
-          map.remove(moduleId);
-        } else {
-          map.put(moduleId, jsonReader.nextString().getBytes());
-        }
+        map.put(moduleId, jsonReader.nextString().getBytes());
 
         jsonReader.endArray();
         numModules++;
@@ -170,6 +162,24 @@ private static int patchDelta(JsonReader jsonReader, LinkedHashMap<Number, byte[
 
       return numModules;
     }
+
+    private static int removeModules(JsonReader jsonReader, LinkedHashMap<Number, byte[]> map)
+      throws IOException {
+      jsonReader.beginArray();
+
+      int numModules = 0;
+      while (jsonReader.hasNext()) {
+        int moduleId = jsonReader.nextInt();
+
+        map.remove(moduleId);
+
+        numModules++;
+      }
+
+      jsonReader.endArray();
+
+      return numModules;
+    }
   }
 
   private static class BundleDeltaNativeClient extends BundleDeltaClient {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDownloader.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDownloader.java
index cf35c8a6ce9478..ba798c14165ccc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDownloader.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDownloader.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DebugOverlayController.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DebugOverlayController.java
index 9450e27dc4bb0a..9eb96e58100e78 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DebugOverlayController.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DebugOverlayController.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevInternalSettings.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevInternalSettings.java
index e9ebe0c2492fb6..4e18237ef7ca03 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevInternalSettings.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevInternalSettings.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevLoadingViewController.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevLoadingViewController.java
index 9d8ed683a85861..0658141be3c33c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevLoadingViewController.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevLoadingViewController.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevServerHelper.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevServerHelper.java
index 255a895fcb1aa7..f7d9748c967d3e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevServerHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevServerHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 import android.content.Context;
 import android.os.AsyncTask;
 import android.os.Handler;
+import android.os.Looper;
 import android.widget.Toast;
 import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
@@ -137,7 +138,7 @@ public DevServerHelper(
       .build();
     mBundleDownloader = new BundleDownloader(mClient);
 
-    mRestartOnChangePollingHandler = new Handler();
+    mRestartOnChangePollingHandler = new Handler(Looper.getMainLooper());
     mPackageName = packageName;
   }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.java
index 757887ba7d243b..3e059df4e13a84 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSettingsActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerFactory.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerFactory.java
index 590db9362dd970..6f808d0b93c571 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerImpl.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerImpl.java
index 8764597391f801..403e481bd75657 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerImpl.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,6 +21,7 @@
 import android.hardware.SensorManager;
 import android.net.Uri;
 import android.os.AsyncTask;
+import android.support.annotation.Nullable;
 import android.util.Pair;
 import android.widget.Toast;
 import com.facebook.common.logging.FLog;
@@ -31,7 +32,6 @@
 import com.facebook.react.bridge.CatalystInstance;
 import com.facebook.react.bridge.DefaultNativeModuleCallExceptionHandler;
 import com.facebook.react.bridge.JavaJSExecutor;
-import com.facebook.react.bridge.JavaScriptContextHolder;
 import com.facebook.react.bridge.NativeDeltaClient;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReactMarker;
@@ -64,7 +64,6 @@
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
-import javax.annotation.Nullable;
 import okhttp3.MediaType;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
@@ -295,7 +294,7 @@ private class JSExceptionLogger implements ExceptionLogger {
 
     @Override
     public void log(Exception e) {
-      StringBuilder message = new StringBuilder(e.getMessage());
+      StringBuilder message = new StringBuilder(e.getMessage() == null ? "Exception in native call from JS" : e.getMessage());
       Throwable cause = e.getCause();
       while (cause != null) {
         message.append("\n\n").append(cause.getMessage());
@@ -320,7 +319,7 @@ public void log(Exception e) {
   }
 
   @Override
-  public void showNewJavaError(String message, Throwable e) {
+  public void showNewJavaError(@Nullable String message, Throwable e) {
     FLog.e(ReactConstants.TAG, "Exception in native call", e);
     showNewError(message, StackTraceHelper.convertJavaStackTrace(e), JAVA_ERROR_COOKIE, ErrorType.NATIVE);
   }
@@ -414,7 +413,7 @@ private void hideDevOptionsDialog() {
   }
 
   private void showNewError(
-      final String message,
+      @Nullable final String message,
       final StackFrame[] stack,
       final int errorCookie,
       final ErrorType errorType) {
@@ -893,7 +892,7 @@ private void handlePokeSamplingProfiler() {
   }
 
   private void updateLastErrorInfo(
-      final String message,
+      @Nullable final String message,
       final StackFrame[] stack,
       final int errorCookie,
       final ErrorType errorType) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DisabledDevSupportManager.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DisabledDevSupportManager.java
index 3441755eb94356..daa11f0ee6b0a8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DisabledDevSupportManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DisabledDevSupportManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DoubleTapReloadRecognizer.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DoubleTapReloadRecognizer.java
index a6fcfa6dcdbf21..ae604d12c9f5be 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/DoubleTapReloadRecognizer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/DoubleTapReloadRecognizer.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/FpsView.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/FpsView.java
index 8a65c8bc39c503..d190c0c40c490b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/FpsView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/FpsView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -39,7 +39,7 @@ public FpsView(ReactContext reactContext) {
     super(reactContext);
     inflate(reactContext, R.layout.fps_view, this);
     mTextView = (TextView) findViewById(R.id.fps_text);
-    mFrameCallback = new FpsDebugFrameCallback(ChoreographerCompat.getInstance(), reactContext);
+    mFrameCallback = new FpsDebugFrameCallback(reactContext);
     mFPSMonitorRunnable = new FPSMonitorRunnable();
     setCurrentFPS(0, 0, 0, 0);
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/HMRClient.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/HMRClient.java
index cc1c8bf763dba2..56d838124b6fb2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/HMRClient.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/HMRClient.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/InspectorPackagerConnection.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/InspectorPackagerConnection.java
index 45b7897f8c0308..11b99dac873075 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/InspectorPackagerConnection.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/InspectorPackagerConnection.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
index 7f99c0fd0f2f42..803ba002dff318 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCHeapCapture.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCSamplingProfiler.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCSamplingProfiler.java
index c69c8eb631fb31..59c05dcf4f2234 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCSamplingProfiler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSCSamplingProfiler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDebuggerWebSocketClient.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDebuggerWebSocketClient.java
index 132ae6ba30a6e3..a6b44a5af0405d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDebuggerWebSocketClient.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDebuggerWebSocketClient.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDevSupport.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDevSupport.java
index 4a84be20254aff..9e98a6415ecf59 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDevSupport.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSDevSupport.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -20,7 +20,7 @@
 @ReactModule(name = JSDevSupport.MODULE_NAME)
 public class JSDevSupport extends ReactContextBaseJavaModule {
 
-  static final String MODULE_NAME = "JSDevSupport";
+  public static final String MODULE_NAME = "JSDevSupport";
 
   public static final int ERROR_CODE_EXCEPTION = 0;
   public static final int ERROR_CODE_VIEW_NOT_FOUND = 1;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSException.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSException.java
index d4dfb627225ada..7f7721fabb6034 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/JSException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/MultipartStreamReader.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/MultipartStreamReader.java
index 80eb0b6e4d51a6..a7e1db130e8083 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/MultipartStreamReader.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/MultipartStreamReader.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/ReactInstanceManagerDevHelper.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/ReactInstanceManagerDevHelper.java
index 7033a21fda478f..b9c35a5ee2ea46 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/ReactInstanceManagerDevHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/ReactInstanceManagerDevHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
index 6d912d545f90ef..5618a07e708386 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxDialog.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxHandler.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxHandler.java
index 071e7dc4d3c6a7..625c59f18e552f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/RedBoxHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,6 +8,7 @@
 package com.facebook.react.devsupport;
 
 import android.content.Context;
+import android.support.annotation.Nullable;
 import android.text.SpannedString;
 
 import com.facebook.react.devsupport.interfaces.StackFrame;
@@ -42,7 +43,7 @@ interface ReportCompletedListener {
   /**
    * Handle the information from the redbox.
    */
-  void handleRedbox(String title, StackFrame[] stack, ErrorType errorType);
+  void handleRedbox(@Nullable String title, StackFrame[] stack, ErrorType errorType);
 
   /**
    * Whether the report feature is enabled.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/StackTraceHelper.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/StackTraceHelper.java
index 3e66d52e61acac..1476b30a8ade58 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/StackTraceHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/StackTraceHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/ViewHierarchyUtil.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/ViewHierarchyUtil.java
index 1aee0099e5f31f..56e617cafd81ce 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/ViewHierarchyUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/ViewHierarchyUtil.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.devsupport;
 
 import android.util.Pair;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/WebsocketJavaScriptExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/WebsocketJavaScriptExecutor.java
index 9a4a581e761bf8..ffeb568382e3c0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/WebsocketJavaScriptExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/WebsocketJavaScriptExecutor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/WindowOverlayCompat.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/WindowOverlayCompat.java
index b4bfa91eeba915..9027148553d2ba 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/WindowOverlayCompat.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/WindowOverlayCompat.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.devsupport;
 
 import android.os.Build;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevBundleDownloadListener.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevBundleDownloadListener.java
index b08ba97066a341..1d7f2a49ebaa14 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevBundleDownloadListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevBundleDownloadListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevOptionHandler.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevOptionHandler.java
index 9efe1bd75483cf..9e84ae97432a5f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevOptionHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevOptionHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevSupportManager.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevSupportManager.java
index 4a081e56d43b67..fbd777ea52088e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevSupportManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/DevSupportManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/ErrorCustomizer.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/ErrorCustomizer.java
index 8612d2db9da5c5..4d251bb0d6cb35 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/ErrorCustomizer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/ErrorCustomizer.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/PackagerStatusCallback.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/PackagerStatusCallback.java
index 5fc3027c555c21..d257023bcd4068 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/PackagerStatusCallback.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/PackagerStatusCallback.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/StackFrame.java b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/StackFrame.java
index 3fdc1ea07e94b7..f512198c1719e2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/StackFrame.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/devsupport/interfaces/StackFrame.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/BUCK b/ReactAndroid/src/main/java/com/facebook/react/fabric/BUCK
index ef2e3e18772d62..62d36a016e3883 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "fabric",
@@ -19,7 +19,6 @@ rn_android_library(
         react_native_dep("libraries/fbcore/src/main/java/com/facebook/common/logging:logging"),
         react_native_dep("third-party/java/infer-annotations:infer-annotations"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),
-        react_native_target("java/com/facebook/react:react"),
         react_native_target("java/com/facebook/debug/tags:tags"),
         react_native_target("java/com/facebook/debug/holder:holder"),
         react_native_target("java/com/facebook/react/bridge:bridge"),
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinder.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinder.java
new file mode 100644
index 00000000000000..c3bd8d5de46439
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinder.java
@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.fabric;
+
+public interface FabricBinder<T extends FabricBinding> {
+
+  void setBinding(T binding);
+
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinding.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinding.java
index 4db39a42522fe9..29ed2c9c39cd9d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinding.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricBinding.java
@@ -1,36 +1,18 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.fabric;
 
 import com.facebook.react.bridge.JavaScriptContextHolder;
-import com.facebook.react.bridge.NativeMap;
 
 public interface FabricBinding {
 
-  void installFabric(JavaScriptContextHolder jsContext, FabricUIManager fabricModule);
-
-  void releaseEventTarget(long jsContextNativePointer, long eventTargetPointer);
-
-  void releaseEventHandler(long jsContextNativePointer, long eventHandlerPointer);
-
-  void dispatchEventToEmptyTarget(
-    long jsContextNativePointer,
-    long eventHandlerPointer,
-    String type,
-    NativeMap payload
-  );
-
-  void dispatchEventToTarget(
-    long jsContextNativePointer,
-    long eventHandlerPointer,
-    long eventTargetPointer,
-    String type,
-    NativeMap payload
-  );
+  // TODO: T31905686 change types of UIManager and EventBeatManager when moving to OSS
+  void register(
+      JavaScriptContextHolder jsContext, FabricBinder fabricBinder, Object eventBeatManager);
 
+  void unregister();
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricReconciler.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricReconciler.java
deleted file mode 100644
index de87cb2c55d4e3..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricReconciler.java
+++ /dev/null
@@ -1,158 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric;
-
-import com.facebook.common.logging.FLog;
-import com.facebook.debug.holder.PrinterHolder;
-import com.facebook.debug.tags.ReactDebugOverlayTags;
-import com.facebook.react.common.ArrayUtils;
-import com.facebook.react.common.build.ReactBuildConfig;
-import com.facebook.react.uimanager.ReactShadowNode;
-import com.facebook.react.uimanager.UIViewOperationQueue;
-import com.facebook.react.uimanager.ViewAtIndex;
-import com.facebook.systrace.Systrace;
-import com.facebook.systrace.SystraceMessage;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Set;
-import javax.annotation.Nullable;
-
-public class FabricReconciler {
-
-  private static final String TAG = FabricReconciler.class.getSimpleName();
-    private static final boolean DEBUG = ReactBuildConfig.DEBUG || PrinterHolder
-    .getPrinter().shouldDisplayLogMessage(ReactDebugOverlayTags.FABRIC_RECONCILER);
-
-  private UIViewOperationQueue uiViewOperationQueue;
-
-  public FabricReconciler(UIViewOperationQueue uiViewOperationQueue) {
-    this.uiViewOperationQueue = uiViewOperationQueue;
-  }
-
-  public void manageChildren(ReactShadowNode previousRootShadowNode, ReactShadowNode newRootShadowNode) {
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricReconciler.manageChildren")
-      .flush();
-
-    try {
-      List<ReactShadowNode> prevList =
-        previousRootShadowNode == null ? null :  previousRootShadowNode.getChildrenList();
-      manageChildren(newRootShadowNode, prevList, newRootShadowNode.getChildrenList());
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  private void manageChildren(
-    ReactShadowNode parent,
-    @Nullable List<ReactShadowNode> prevList,
-    @Nullable List<ReactShadowNode> newList) {
-    prevList = prevList == null ? Collections.<ReactShadowNode>emptyList() : prevList;
-    newList = newList == null ? Collections.<ReactShadowNode>emptyList() : newList;
-
-    // Iterate through each child list and compare each previous and next child. Same nodes
-    // implies no change is needed. If the nodes are different but are referencing the same view,
-    // the view needs to be updated with new props and children. Otherwise, there has been
-    // a change in the children positions.
-    int sameReactTagIndex = 0;
-    for (; sameReactTagIndex < Math.min(prevList.size(), newList.size()); sameReactTagIndex++) {
-      ReactShadowNode prevNode = prevList.get(sameReactTagIndex);
-      ReactShadowNode newNode = newList.get(sameReactTagIndex);
-      if (prevNode == newNode) {
-        continue;
-      }
-      if (prevNode.getReactTag() != newNode.getReactTag()) {
-        break;
-      }
-      enqueueUpdateProperties(newNode, prevNode);
-      manageChildren(prevNode, prevNode.getChildrenList(), newNode.getChildrenList());
-      newNode.setOriginalReactShadowNode(null);
-    }
-    int firstRemovedOrAddedViewIndex = sameReactTagIndex;
-
-    // Every ReactShadowNode on the newList that is on the right side of
-    // firstRemovedOrAddedViewIndex is defined as an added view.
-    // It is more efficient to reorder removing and adding all the views in the right order, instead
-    // of calculating the minimum amount of reorder operations.
-    Set<Integer> addedTags = new HashSet<>();
-    List<ViewAtIndex> viewsToAdd = new LinkedList<>();
-    for (int k = firstRemovedOrAddedViewIndex; k < newList.size(); k++) {
-      ReactShadowNode newNode = newList.get(k);
-      if (newNode.isVirtual()) continue;
-      enqueueUpdateProperties(newNode, newNode.getOriginalReactShadowNode());
-      viewsToAdd.add(new ViewAtIndex(newNode.getReactTag(), k));
-      List previousChildrenList = newNode.getOriginalReactShadowNode() == null ? null : newNode.getOriginalReactShadowNode().getChildrenList();
-      manageChildren(newNode, previousChildrenList, newNode.getChildrenList());
-      newNode.setOriginalReactShadowNode(null);
-      addedTags.add(newNode.getReactTag());
-    }
-
-    // Every ReactShadowNode on the prevList that is on the right side of
-    // firstRemovedOrAddedViewIndex is defined as a removed view.
-    // It is more efficient to reorder removing and adding all the views in the right order, instead
-    // of calculating the minimum amount of reorder operations.
-    // If a View is not re-ordered, then the ReactTag is deleted (ReactShadowNode and native View
-    // are released from memory)
-    List<Integer> tagsToDelete = new LinkedList<>();
-    List<Integer> indicesToRemove = new LinkedList<>();
-    for (int j = prevList.size() - 1; j >= firstRemovedOrAddedViewIndex; j--) {
-      ReactShadowNode nodeToRemove = prevList.get(j);
-      if (nodeToRemove.isVirtual()) continue;
-      indicesToRemove.add(0, j);
-      if (!addedTags.contains(nodeToRemove.getReactTag())) {
-        tagsToDelete.add(nodeToRemove.getReactTag());
-      }
-    }
-
-    // TODO (t27180994): Mutate views synchronously on main thread
-    if (!(indicesToRemove.isEmpty() && viewsToAdd.isEmpty() && tagsToDelete.isEmpty())) {
-      int[] indicesToRemoveArray = ArrayUtils.copyListToArray(indicesToRemove);
-      ViewAtIndex[] viewsToAddArray = viewsToAdd.toArray(new ViewAtIndex[viewsToAdd.size()]);
-      int[] tagsToDeleteArray = ArrayUtils.copyListToArray(tagsToDelete);
-      if (DEBUG) {
-        FLog.d(
-            TAG,
-            "manageChildren.enqueueManageChildren parent: " + parent.getReactTag() +
-                "\n\tIndices2Remove: " + Arrays.toString(indicesToRemoveArray) +
-                "\n\tViews2Add: " + Arrays.toString(viewsToAddArray) +
-                "\n\tTags2Delete: " + Arrays.toString(tagsToDeleteArray));
-      }
-      uiViewOperationQueue.enqueueManageChildren(
-        parent.getReactTag(), indicesToRemoveArray, viewsToAddArray, tagsToDeleteArray);
-    }
-  }
-
-  private void enqueueUpdateProperties(ReactShadowNode newNode, ReactShadowNode prevNode) {
-    int reactTag = newNode.getReactTag();
-    if (DEBUG) {
-      FLog.d(
-        TAG,
-        "manageChildren.enqueueUpdateProperties " +
-          "\n\ttag: " + reactTag +
-          "\n\tviewClass: " + newNode.getViewClass() +
-          "\n\tinstanceHandle: " + newNode.getInstanceHandle() +
-          "\n\tnewProps: " + newNode.getNewProps());
-    }
-
-    if (prevNode != null) {
-      newNode.updateScreenLayout(prevNode);
-    }
-
-    if (newNode.getNewProps() != null) {
-      uiViewOperationQueue.enqueueUpdateProperties(
-        reactTag, newNode.getViewClass(), newNode.getNewProps());
-    }
-
-    uiViewOperationQueue.enqueueUpdateInstanceHandle(
-      reactTag, newNode.getInstanceHandle());
-  }
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
deleted file mode 100644
index 87d1850e674226..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
+++ /dev/null
@@ -1,681 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric;
-
-import static android.view.View.MeasureSpec.AT_MOST;
-import static android.view.View.MeasureSpec.EXACTLY;
-import static android.view.View.MeasureSpec.UNSPECIFIED;
-import static com.facebook.react.uimanager.common.UIManagerType.FABRIC;
-
-import android.os.SystemClock;
-import android.view.View;
-import com.facebook.common.logging.FLog;
-import com.facebook.debug.holder.PrinterHolder;
-import com.facebook.debug.tags.ReactDebugOverlayTags;
-import com.facebook.infer.annotation.Assertions;
-import com.facebook.proguard.annotations.DoNotStrip;
-import com.facebook.react.bridge.JavaScriptContextHolder;
-import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReadableArray;
-import com.facebook.react.bridge.ReadableMap;
-import com.facebook.react.bridge.ReadableNativeMap;
-import com.facebook.react.bridge.UIManager;
-import com.facebook.react.bridge.WritableMap;
-import com.facebook.react.bridge.WritableNativeMap;
-import com.facebook.react.common.ReactConstants;
-import com.facebook.react.common.annotations.VisibleForTesting;
-import com.facebook.react.common.build.ReactBuildConfig;
-import com.facebook.react.fabric.events.FabricEventEmitter;
-import com.facebook.react.modules.i18nmanager.I18nUtil;
-import com.facebook.react.uimanager.DisplayMetricsHolder;
-import com.facebook.react.uimanager.NativeViewHierarchyManager;
-import com.facebook.react.uimanager.ReactRootViewTagGenerator;
-import com.facebook.react.uimanager.ReactShadowNode;
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
-import com.facebook.react.uimanager.ReactStylesDiffMap;
-import com.facebook.react.uimanager.ThemedReactContext;
-import com.facebook.react.uimanager.UIViewOperationQueue;
-import com.facebook.react.uimanager.ViewManager;
-import com.facebook.react.uimanager.ViewManagerRegistry;
-import com.facebook.react.uimanager.common.MeasureSpecProvider;
-import com.facebook.react.uimanager.common.SizeMonitoringFrameLayout;
-import com.facebook.react.uimanager.events.EventDispatcher;
-import com.facebook.systrace.Systrace;
-import com.facebook.systrace.SystraceMessage;
-import com.facebook.yoga.YogaDirection;
-import java.util.ArrayList;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-import javax.annotation.Nullable;
-
-/**
- * This class is responsible to create, clone and update {@link ReactShadowNode} using the Fabric
- * API.
- */
-@SuppressWarnings("unused") // used from JNI
-@DoNotStrip
-public class FabricUIManager implements UIManager, JSHandler {
-
-  private static final String TAG = FabricUIManager.class.getSimpleName();
-  private static final boolean DEBUG = ReactBuildConfig.DEBUG || PrinterHolder.getPrinter().shouldDisplayLogMessage(ReactDebugOverlayTags.FABRIC_UI_MANAGER);
-
-  private final RootShadowNodeRegistry mRootShadowNodeRegistry = new RootShadowNodeRegistry();
-  private final ReactApplicationContext mReactApplicationContext;
-  private final ViewManagerRegistry mViewManagerRegistry;
-  private final UIViewOperationQueue mUIViewOperationQueue;
-  private final NativeViewHierarchyManager mNativeViewHierarchyManager;
-  private final JavaScriptContextHolder mJSContext;
-  private volatile int mCurrentBatch = 0;
-  private final FabricReconciler mFabricReconciler;
-  private final EventDispatcher mEventDispatcher;
-  private FabricBinding mBinding;
-  private final FabricEventEmitter mFabricEventEmitter;
-  private long mEventHandlerPointer;
-  private long mLastCalculateLayoutTime = 0;
-
-  public FabricUIManager(
-      ReactApplicationContext reactContext,
-      ViewManagerRegistry viewManagerRegistry,
-      JavaScriptContextHolder jsContext,
-      EventDispatcher eventDispatcher) {
-    DisplayMetricsHolder.initDisplayMetricsIfNotInitialized(reactContext);
-    mReactApplicationContext = reactContext;
-    mViewManagerRegistry = viewManagerRegistry;
-    mNativeViewHierarchyManager = new NativeViewHierarchyManager(viewManagerRegistry);
-    mUIViewOperationQueue =
-        new UIViewOperationQueue(
-            reactContext, mNativeViewHierarchyManager, 0);
-    mFabricReconciler = new FabricReconciler(mUIViewOperationQueue);
-    mFabricEventEmitter =
-      new FabricEventEmitter(mReactApplicationContext, this);
-    mEventDispatcher = eventDispatcher;
-    mJSContext = jsContext;
-  }
-
-  public void setBinding(FabricBinding binding) {
-    mBinding = binding;
-  }
-
-  /** Creates a new {@link ReactShadowNode} */
-  @Nullable
-  @DoNotStrip
-  public ReactShadowNode createNode(
-      int reactTag, String viewName, int rootTag, ReadableNativeMap props, long eventTarget) {
-    if (DEBUG) {
-      FLog.d(TAG, "createNode \n\ttag: " + reactTag +
-          "\n\tviewName: " + viewName +
-          "\n\trootTag: " + rootTag +
-          "\n\tprops: " + props);
-    }
-    try {
-      ViewManager viewManager = mViewManagerRegistry.get(viewName);
-      ReactShadowNode node = viewManager.createShadowNodeInstance(mReactApplicationContext);
-      ReactShadowNode rootNode = getRootNode(rootTag);
-      node.setRootTag(rootNode.getReactTag());
-      node.setViewClassName(viewName);
-      node.setInstanceHandle(eventTarget);
-      node.setReactTag(reactTag);
-      node.setThemedContext(rootNode.getThemedContext());
-
-      ReactStylesDiffMap styles = updateProps(node, props);
-
-      if (!node.isVirtual()) {
-        mUIViewOperationQueue.enqueueCreateView(
-            rootNode.getThemedContext(), reactTag, viewName, styles);
-      }
-      return node;
-    } catch (Throwable t) {
-      handleException(getRootNode(rootTag), t);
-      return null;
-    }
-  }
-
-  @VisibleForTesting
-  ReactShadowNode getRootNode(int rootTag) {
-    return mRootShadowNodeRegistry.getNode(rootTag);
-  }
-
-  private ReactStylesDiffMap updateProps(ReactShadowNode node, @Nullable ReadableNativeMap props) {
-    ReactStylesDiffMap styles = null;
-    if (props != null) {
-      styles = new ReactStylesDiffMap(props);
-      node.updateProperties(styles);
-    }
-    return styles;
-  }
-
-  /**
-   * @return a clone of the {@link ReactShadowNode} received by parameter. The cloned
-   *     ReactShadowNode will contain a copy of all the internal data of the original node,
-   *     including its children set (note that the children nodes will not be cloned).
-   */
-  @Nullable
-  @DoNotStrip
-  public ReactShadowNode cloneNode(ReactShadowNode node) {
-    if (DEBUG) {
-      FLog.d(TAG, "cloneNode \n\tnode: " + node);
-    }
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.cloneNode")
-      .flush();
-    try {
-      ReactShadowNode clone = node.mutableCopy(node.getInstanceHandle());
-      assertReactShadowNodeCopy(node, clone);
-      return clone;
-    } catch (Throwable t) {
-      handleException(node, t);
-      return null;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  /**
-   * @return a clone of the {@link ReactShadowNode} received by parameter. The cloned
-   *     ReactShadowNode will contain a copy of all the internal data of the original node, but its
-   *     children set will be empty.
-   */
-  @Nullable
-  @DoNotStrip
-  public ReactShadowNode cloneNodeWithNewChildren(ReactShadowNode node) {
-    if (DEBUG) {
-      FLog.d(TAG, "cloneNodeWithNewChildren \n\tnode: " + node);
-    }
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.cloneNodeWithNewChildren")
-      .flush();
-    try {
-      ReactShadowNode clone = node.mutableCopyWithNewChildren(node.getInstanceHandle());
-      assertReactShadowNodeCopy(node, clone);
-      return clone;
-    } catch (Throwable t) {
-      handleException(node, t);
-      return null;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  /**
-   * @return a clone of the {@link ReactShadowNode} received by parameter. The cloned
-   *     ReactShadowNode will contain a copy of all the internal data of the original node, but its
-   *     props will be overridden with the {@link ReadableMap} received by parameter.
-   */
-  @Nullable
-  @DoNotStrip
-  public ReactShadowNode cloneNodeWithNewProps(
-      ReactShadowNode node, @Nullable ReadableNativeMap newProps) {
-    if (DEBUG) {
-      FLog.d(TAG, "cloneNodeWithNewProps \n\tnode: " + node + "\n\tprops: " + newProps);
-    }
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.cloneNodeWithNewProps")
-      .flush();
-    try {
-      ReactShadowNode clone = node.mutableCopyWithNewProps(node.getInstanceHandle(),
-            newProps == null ? null : new ReactStylesDiffMap(newProps));
-      assertReactShadowNodeCopy(node, clone);
-      return clone;
-    } catch (Throwable t) {
-      handleException(node, t);
-      return null;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  /**
-   * @return a clone of the {@link ReactShadowNode} received by parameter. The cloned
-   *     ReactShadowNode will contain a copy of all the internal data of the original node, but its
-   *     props will be overridden with the {@link ReadableMap} received by parameter and its
-   *     children set will be empty.
-   */
-  @Nullable
-  @DoNotStrip
-  public ReactShadowNode cloneNodeWithNewChildrenAndProps(
-      ReactShadowNode node, ReadableNativeMap newProps) {
-    if (DEBUG) {
-      FLog.d(TAG, "cloneNodeWithNewChildrenAndProps \n\tnode: " + node + "\n\tnewProps: " + newProps);
-    }
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.cloneNodeWithNewChildrenAndProps")
-      .flush();
-    try {
-      ReactShadowNode clone =
-          node.mutableCopyWithNewChildrenAndProps(node.getInstanceHandle(),
-              newProps == null ? null : new ReactStylesDiffMap(newProps));
-      assertReactShadowNodeCopy(node, clone);
-      return clone;
-    } catch (Throwable t) {
-      handleException(node, t);
-      return null;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  private void assertReactShadowNodeCopy(ReactShadowNode source, ReactShadowNode target) {
-    Assertions.assertCondition(
-        source.getClass().equals(target.getClass()),
-        "Found "
-            + target.getClass()
-            + " class when expecting: "
-            + source.getClass()
-            + ". Check that "
-            + source.getClass()
-            + " implements the copy() method correctly.");
-  }
-
-  /**
-   * Appends the child {@link ReactShadowNode} to the children set of the parent {@link
-   * ReactShadowNode}.
-   */
-  @Nullable
-  @DoNotStrip
-  public void appendChild(ReactShadowNode parent, ReactShadowNode child) {
-    if (DEBUG) {
-      FLog.d(TAG, "appendChild \n\tparent: " + parent + "\n\tchild: " + child);
-    }
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.appendChild")
-      .flush();
-    try {
-      // If the child to append was already committed (child.isSealed()),
-      // then we add a mutation of it. In the future this will be performed by FabricJS / Fiber.
-      //TODO: T27926878 avoid cloning shared child
-      if (child.isSealed()) {
-        child = child.mutableCopy(child.getInstanceHandle());
-      }
-      parent.addChildAt(child, parent.getChildCount());
-    } catch (Throwable t) {
-      handleException(parent, t);
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  /**
-   * @return an empty {@link List<ReactShadowNode>} that will be used to append the {@link
-   *     ReactShadowNode} elements of the root. Typically this List will contain one element.
-   */
-  @DoNotStrip
-  public List<ReactShadowNode> createChildSet(int rootTag) {
-    if (DEBUG) {
-      FLog.d(TAG, "createChildSet rootTag: " + rootTag);
-    }
-    return new ArrayList<>(1);
-  }
-
-  /**
-   * Adds the {@link ReactShadowNode} to the {@link List<ReactShadowNode>} received by parameter.
-   */
-  @DoNotStrip
-  public void appendChildToSet(List<ReactShadowNode> childList, ReactShadowNode child) {
-    childList.add(child);
-  }
-
-  @DoNotStrip
-  public synchronized void completeRoot(int rootTag, @Nullable List<ReactShadowNode> childList) {
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.completeRoot")
-      .flush();
-    try {
-      long startTime = SystemClock.uptimeMillis();
-      childList = childList == null ? new LinkedList<ReactShadowNode>() : childList;
-      if (DEBUG) {
-        FLog.d(TAG, "completeRoot rootTag: " + rootTag + ", childList: " + childList);
-      }
-      ReactShadowNode currentRootShadowNode = getRootNode(rootTag);
-      Assertions.assertNotNull(
-          currentRootShadowNode,
-          "Root view with tag " + rootTag + " must be added before completeRoot is called");
-
-      currentRootShadowNode = calculateDiffingAndCreateNewRootNode(currentRootShadowNode, childList);
-
-      if (DEBUG) {
-        FLog.d(
-          TAG,
-          "ReactShadowNodeHierarchy after diffing: " + currentRootShadowNode.getHierarchyInfo());
-      }
-
-      applyUpdatesRecursive(currentRootShadowNode);
-      mUIViewOperationQueue.dispatchViewUpdates(
-        mCurrentBatch++, startTime, mLastCalculateLayoutTime);
-
-      mRootShadowNodeRegistry.replaceNode(currentRootShadowNode);
-    } catch (Exception e) {
-      handleException(getRootNode(rootTag), e);
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  public void dispatchCommand(int reactTag, int commandId, @Nullable ReadableArray commandArgs) {
-    mUIViewOperationQueue.enqueueDispatchCommand(reactTag, commandId, commandArgs);
-  }
-
-  private void notifyOnBeforeLayoutRecursive(ReactShadowNode node) {
-    if (!node.hasUpdates()) {
-      return;
-    }
-    for (int i = 0; i < node.getChildCount(); i++) {
-      notifyOnBeforeLayoutRecursive(node.getChildAt(i));
-    }
-    node.onBeforeLayout();
-  }
-
-  private ReactShadowNode calculateDiffingAndCreateNewRootNode(
-      ReactShadowNode currentRootShadowNode, List<ReactShadowNode> newChildList) {
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.calculateDiffingAndCreateNewRootNode")
-      .flush();
-    try {
-      ReactShadowNode newRootShadowNode = currentRootShadowNode.mutableCopyWithNewChildren(currentRootShadowNode.getInstanceHandle());
-      for (ReactShadowNode child : newChildList) {
-        appendChild(newRootShadowNode, child);
-      }
-
-      if (DEBUG) {
-        FLog.d(
-          TAG,
-          "ReactShadowNodeHierarchy before calculateLayout: " + newRootShadowNode.getHierarchyInfo());
-      }
-
-      notifyOnBeforeLayoutRecursive(newRootShadowNode);
-
-      calculateLayout(newRootShadowNode);
-
-      if (DEBUG) {
-        FLog.d(
-          TAG,
-          "ReactShadowNodeHierarchy after calculateLayout: " + newRootShadowNode.getHierarchyInfo());
-      }
-
-      mFabricReconciler.manageChildren(currentRootShadowNode, newRootShadowNode);
-      return newRootShadowNode;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  private void calculateLayout(ReactShadowNode newRootShadowNode) {
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.calculateLayout")
-      .flush();
-    long startTime = SystemClock.uptimeMillis();
-    try {
-      newRootShadowNode.calculateLayout();
-    } finally{
-      mLastCalculateLayoutTime = SystemClock.uptimeMillis() - startTime;
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  private void applyUpdatesRecursive(ReactShadowNode node) {
-    SystraceMessage.beginSection(
-            Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "FabricUIManager.applyUpdatesRecursive")
-        .flush();
-    try {
-      applyUpdatesRecursive(node, 0, 0);
-    } finally{
-      SystraceMessage.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  private void applyUpdatesRecursive(ReactShadowNode node, float absoluteX, float absoluteY) {
-    if (!node.hasUpdates()) {
-      return;
-    }
-
-    if (!node.isVirtualAnchor()) {
-      for (int i = 0; i < node.getChildCount(); i++) {
-        applyUpdatesRecursive(
-            node.getChildAt(i),
-            absoluteX + node.getLayoutX(),
-            absoluteY + node.getLayoutY());
-      }
-    }
-
-    int tag = node.getReactTag();
-    if (getRootNode(tag) == null) {
-      boolean frameDidChange =
-          node.dispatchUpdates(absoluteX, absoluteY, mUIViewOperationQueue, null);
-      // Notify JS about layout event if requested
-      // and if the position or dimensions actually changed
-      // (consistent with iOS and Android Default implementation).
-      if (frameDidChange && node.shouldNotifyOnLayout()) {
-        mUIViewOperationQueue.enqueueOnLayoutEvent(tag,
-          node.getScreenX(),
-          node.getScreenY(),
-          node.getScreenWidth(),
-          node.getScreenHeight());
-      }
-    }
-
-    // Set the reference to the OriginalReactShadowNode to NULL, as the tree is already committed
-    // and we do not need to hold references to the previous tree anymore
-    node.setOriginalReactShadowNode(null);
-    node.markUpdateSeen();
-    node.markAsSealed();
-  }
-
-  @Override
-  @DoNotStrip
-  public <T extends SizeMonitoringFrameLayout & MeasureSpecProvider> int addRootView(
-      final T rootView) {
-
-    SystraceMessage.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "FabricUIManager.addRootView")
-      .flush();
-    try {
-      final int rootTag = ReactRootViewTagGenerator.getNextRootViewTag();
-      ThemedReactContext themedRootContext =
-          new ThemedReactContext(mReactApplicationContext, rootView.getContext());
-
-      ReactShadowNode rootShadowNode = createRootShadowNode(rootTag, themedRootContext);
-
-      int widthMeasureSpec = rootView.getWidthMeasureSpec();
-      int heightMeasureSpec = rootView.getHeightMeasureSpec();
-      updateRootView(rootShadowNode, widthMeasureSpec, heightMeasureSpec);
-
-      rootView.setOnSizeChangedListener(
-        new SizeMonitoringFrameLayout.OnSizeChangedListener() {
-          @Override
-          public void onSizeChanged(final int width, final int height, int oldW, int oldH) {
-            updateRootSize(rootTag, width, height);
-          }
-        });
-
-      mRootShadowNodeRegistry.registerNode(rootShadowNode);
-      mUIViewOperationQueue.addRootView(rootTag, rootView, themedRootContext);
-      return rootTag;
-    } finally{
-      Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-    }
-  }
-
-  @Override
-  @DoNotStrip
-  public synchronized void updateRootLayoutSpecs(int rootViewTag, int widthMeasureSpec, int heightMeasureSpec) {
-    ReactShadowNode rootNode = getRootNode(rootViewTag);
-    if (rootNode == null) {
-      FLog.w(ReactConstants.TAG, "Tried to update non-existent root tag: " + rootViewTag);
-      return;
-    }
-
-    ReactShadowNode newRootNode = rootNode.mutableCopy(rootNode.getInstanceHandle());
-    updateRootView(newRootNode, widthMeasureSpec, heightMeasureSpec);
-    mRootShadowNodeRegistry.replaceNode(newRootNode);
-  }
-
-  /**
-   * Updates the root view size and re-render the RN surface.
-   *
-   * //TODO: change synchronization to integrate with new #render loop.
-   */
-  private synchronized void updateRootSize(int rootTag, int newWidth, int newHeight) {
-    ReactShadowNode rootNode = getRootNode(rootTag);
-    if (rootNode == null) {
-      FLog.w(
-        ReactConstants.TAG,
-        "Tried to update size of non-existent tag: " + rootTag);
-      return;
-    }
-
-    ReactShadowNode newRootNode = rootNode.mutableCopy(rootNode.getInstanceHandle());
-    int newWidthSpec = View.MeasureSpec.makeMeasureSpec(newWidth, View.MeasureSpec.EXACTLY);
-    int newHeightSpec = View.MeasureSpec.makeMeasureSpec(newHeight, View.MeasureSpec.EXACTLY);
-    updateRootView(newRootNode, newWidthSpec, newHeightSpec);
-
-    completeRoot(rootTag, newRootNode.getChildrenList());
-  }
-
-  public void removeRootView(int rootTag) {
-    mRootShadowNodeRegistry.removeNode(rootTag);
-  }
-
-  private ReactShadowNode createRootShadowNode(int rootTag, ThemedReactContext themedReactContext) {
-    ReactShadowNode rootNode = new ReactShadowNodeImpl();
-    I18nUtil sharedI18nUtilInstance = I18nUtil.getInstance();
-    if (sharedI18nUtilInstance.isRTL(themedReactContext)) {
-      rootNode.setLayoutDirection(YogaDirection.RTL);
-    }
-    rootNode.setViewClassName("Root");
-    rootNode.setReactTag(rootTag);
-    rootNode.setThemedContext(themedReactContext);
-    return rootNode;
-  }
-
-  /**
-   * Updates the styles of the {@link ReactShadowNode} based on the Measure specs received by
-   * parameters.
-   */
-  private void updateRootView(
-      ReactShadowNode node, int widthMeasureSpec, int heightMeasureSpec) {
-    int widthMode = View.MeasureSpec.getMode(widthMeasureSpec);
-    int widthSize = View.MeasureSpec.getSize(widthMeasureSpec);
-    switch (widthMode) {
-      case EXACTLY:
-        node.setStyleWidth(widthSize);
-        break;
-      case AT_MOST:
-        node.setStyleMaxWidth(widthSize);
-        break;
-      case UNSPECIFIED:
-        node.setStyleWidthAuto();
-        break;
-    }
-
-    int heightMode = View.MeasureSpec.getMode(heightMeasureSpec);
-    int heightSize = View.MeasureSpec.getSize(heightMeasureSpec);
-    switch (heightMode) {
-      case EXACTLY:
-        node.setStyleHeight(heightSize);
-        break;
-      case AT_MOST:
-        node.setStyleMaxHeight(heightSize);
-        break;
-      case UNSPECIFIED:
-        node.setStyleHeightAuto();
-        break;
-    }
-  }
-
-  private void handleException(ReactShadowNode node, Throwable t) {
-    try {
-      ThemedReactContext context = node.getThemedContext();
-      // TODO move exception management to JNI side, and refactor to avoid wrapping Throwable into
-      // a RuntimeException
-      context.handleException(new RuntimeException(t));
-    } catch (Exception ex) {
-      FLog.e(TAG, "Exception while executing a Fabric method", t);
-      throw new RuntimeException(ex.getMessage(), t);
-    }
-  }
-
-  @Nullable
-  @DoNotStrip
-  public long getEventTarget(int reactTag) {
-    long instanceHandle = mNativeViewHierarchyManager.getInstanceHandle(reactTag);
-    return instanceHandle;
-  }
-
-  @DoNotStrip
-  public void registerEventHandler(long eventHandlerPointer) {
-    mEventHandlerPointer = eventHandlerPointer;
-  }
-
-  @DoNotStrip
-  public void releaseEventTarget(long eventTargetPointer) {
-    mBinding.releaseEventTarget(mJSContext.get(), eventTargetPointer);
-  }
-
-  @DoNotStrip
-  public void releaseEventHandler(long eventHandlerPointer) {
-    mBinding.releaseEventHandler(mJSContext.get(), eventHandlerPointer);
-  }
-
-  @Override
-  @DoNotStrip
-  public void invoke(long eventTarget, String name, WritableMap params) {
-    if (DEBUG) {
-      FLog.d(
-        TAG,
-        "Dispatching event for target: " + eventTarget);
-    }
-    if (params == null) {
-      params = new WritableNativeMap();
-    }
-    mBinding.dispatchEventToTarget(mJSContext.get(), mEventHandlerPointer, eventTarget, name, (WritableNativeMap) params);
-  }
-
-  @Override
-  public void setJSResponder(int reactTag, boolean blockNativeResponder) {
-    // TODO: Do nothing for now
-  }
-
-  @Override
-  public void clearJSResponder() {
-    // TODO: Do nothing for now
-  }
-
-  @Override
-  public void initialize() {
-    FabricEventEmitter eventEmitter =
-      new FabricEventEmitter(mReactApplicationContext, this);
-    mEventDispatcher.registerEventEmitter(FABRIC, mFabricEventEmitter);
-  }
-
-  @Override
-  public void onCatalystInstanceDestroy() {
-    mBinding.releaseEventHandler(mJSContext.get(), mEventHandlerPointer);
-    mEventDispatcher.unregisterEventEmitter(FABRIC);
-    mFabricEventEmitter.close();
-  }
-
-  @Override
-  public void profileNextBatch() {
-    mUIViewOperationQueue.profileNextBatch();
-  }
-
-  @Override
-  public Map<String, Long> getPerformanceCounters() {
-    // TODO change profiling when enabling multi-thread rendering.
-    return mUIViewOperationQueue.getProfiledBatchPerfCounters();
-  }
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/JSHandler.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/JSHandler.java
deleted file mode 100644
index 471c016a6888d4..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/JSHandler.java
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-package com.facebook.react.fabric;
-
-import com.facebook.react.bridge.WritableMap;
-
-public interface JSHandler {
-
-  void invoke(long instanceHandle, String name, WritableMap params);
-
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/RootShadowNodeRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/RootShadowNodeRegistry.java
deleted file mode 100644
index 1d66d4b500e6d3..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/RootShadowNodeRegistry.java
+++ /dev/null
@@ -1,46 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric;
-
-import com.facebook.react.uimanager.ReactShadowNode;
-import java.util.concurrent.ConcurrentHashMap;
-import javax.annotation.concurrent.ThreadSafe;
-
-/**
- * Simple container class to keep track of {@link ReactShadowNode}s that represents the Root
- * Shadow Nodes of a {@link FabricUIManager}.
- */
-@ThreadSafe
-public class RootShadowNodeRegistry {
-
-  private final ConcurrentHashMap<Integer, ReactShadowNode> mTagsToRootNodes = new ConcurrentHashMap<>();
-
-  /**
-   * Registers the {@link ReactShadowNode} received as a parameter as a RootShadowNode.
-   */
-  public synchronized void registerNode(ReactShadowNode node) {
-    mTagsToRootNodes.put(node.getReactTag(), node);
-  }
-
-  /**
-   * Register the {@link ReactShadowNode} received as a parameter as a RootShadowNode, replacing
-   * the previous RootShadowNode associated for the {@link ReactShadowNode#getReactTag()}
-   */
-  public void replaceNode(ReactShadowNode node) {
-    mTagsToRootNodes.replace(node.getReactTag(), node);
-  }
-
-  public void removeNode(Integer tag) {
-    mTagsToRootNodes.remove(tag);
-  }
-
-  public ReactShadowNode getNode(int tag) {
-    return mTagsToRootNodes.get(tag);
-  }
-
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/Scheduler.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/Scheduler.java
deleted file mode 100644
index fb199435f99bb9..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/Scheduler.java
+++ /dev/null
@@ -1,95 +0,0 @@
-package com.facebook.react.fabric;
-
-import com.facebook.common.logging.FLog;
-import com.facebook.react.bridge.ReactContext;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.LinkedBlockingDeque;
-import java.util.concurrent.RejectedExecutionException;
-import java.util.concurrent.ThreadPoolExecutor;
-import java.util.concurrent.TimeUnit;
-
-/**
- * This class allows Native code to schedule work in JS.
- * Work (following JS naming) represents a task that needs to be executed in JS.
- *
- * Four types of work are supported by this class:
- *
- * Synchronous:
- * - Sync work                   -> flushSync()
- * - Work work                   -> flushSerial()
- *
- * Asynchronous:
- * - Interactive work (serial):  -> scheduleSerial()
- * - Deferred work:              -> scheduleWork()
- *
- */
-public class Scheduler {
-
-  private static final String TAG = Scheduler.class.getSimpleName();
-  // The usage of this executor might change in the near future.
-  private final ExecutorService mExecutor = new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingDeque<Runnable>());
-  private final ReactContext mReactContext;
-
-  public Scheduler(ReactContext reactContext) {
-    mReactContext = reactContext;
-  }
-
-  /**
-   * This method schedules work to be executed with the lowest priority in the JS Thread.
-   *
-   * The current implementation queues "work"s in an unbounded queue tight to a SingleThreadExecutor.
-   * Work objects are going to be submitted one-by-one at the end of the JS Queue Thread.
-   *
-   * Notice that the current implementation might experience some delays in JS work execution,
-   * depending on the size of the JS Queue and the time it takes to execute each work in JS.
-   *
-   * TODO: This implementation is very likely to change in the near future.
-   */
-  public void scheduleWork(final Work work) {
-    try {
-      mExecutor.execute(new Runnable() {
-        @Override
-        public void run() {
-          mReactContext.runOnJSQueueThread(new Runnable() {
-            @Override
-            public void run() {
-              try {
-                work.run();
-              } catch (Exception ex) {
-                FLog.w(TAG, "Exception running work in JS.", ex);
-                throw ex;
-              }
-            }
-          });
-        }
-      });
-    } catch (RejectedExecutionException ex) {
-      // This can happen if a Work is scheduled when the Scheduler is being shutdown.
-      // For now, we log and do not take any action.
-      FLog.i(TAG, "Unable to schedule task.");
-    }
-  }
-
-  public void flushSync(Work work) {
-    // TODO T26717866 this method needs to be implemented. The current implementation is just for
-    // testing purpose.
-  }
-
-  public void flushSerial(Work work) {
-    // TODO T26717866 this method needs to be implemented. The current implementation is just for
-    // testing purpose.
-  }
-
-  public void scheduleSerial(Work work) {
-    // TODO T26717866 this method needs to be implemented. The current implementation is just for
-    // testing purpose.
-  }
-
-  /**
-   * Shutdowns the {@link Scheduler}. this operation will attempt to stop all "active executing"
-   * Works items and it will "halts:" all the Works items waiting to be executed.
-   */
-  public void shutdown() {
-    mExecutor.shutdownNow();
-  }
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/Work.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/Work.java
deleted file mode 100644
index d179b00439dcde..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/Work.java
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric;
-
-/**
- * Interface that represents a task or piece of code that will be executed by {@link Scheduler}
- * This follows React API naming for consistency.
- */
-public interface Work {
-
-  void run();
-
-}
-
-
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.java
deleted file mode 100644
index 2d1c01d8692226..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/events/FabricEventEmitter.java
+++ /dev/null
@@ -1,183 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric.events;
-
-import static com.facebook.react.uimanager.events.TouchesHelper.CHANGED_TOUCHES_KEY;
-import static com.facebook.react.uimanager.events.TouchesHelper.TARGET_KEY;
-import static com.facebook.react.uimanager.events.TouchesHelper.TOP_TOUCH_CANCEL_KEY;
-import static com.facebook.react.uimanager.events.TouchesHelper.TOP_TOUCH_END_KEY;
-import static com.facebook.react.uimanager.events.TouchesHelper.TOUCHES_KEY;
-
-import android.annotation.TargetApi;
-import android.os.Build;
-import android.util.Pair;
-import com.facebook.common.logging.FLog;
-import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReadableMap;
-import com.facebook.react.bridge.WritableArray;
-import com.facebook.react.bridge.WritableMap;
-import com.facebook.react.bridge.WritableNativeArray;
-import com.facebook.react.bridge.WritableNativeMap;
-import com.facebook.react.fabric.FabricUIManager;
-import com.facebook.react.fabric.Scheduler;
-import com.facebook.react.fabric.Work;
-import com.facebook.react.uimanager.IllegalViewOperationException;
-import com.facebook.react.uimanager.events.RCTEventEmitter;
-import java.io.Closeable;
-import java.util.HashSet;
-import java.util.Set;
-import javax.annotation.Nullable;
-
-@TargetApi(Build.VERSION_CODES.ECLAIR)
-public class FabricEventEmitter implements RCTEventEmitter, Closeable {
-
-  private static final String TAG = FabricEventEmitter.class.getSimpleName();
-
-  private final FabricUIManager mFabricUIManager;
-  private final Scheduler mScheduler;
-
-  public FabricEventEmitter(ReactApplicationContext context, FabricUIManager fabricUIManager) {
-    mScheduler = new Scheduler(context);
-    mFabricUIManager = fabricUIManager;
-  }
-
-  @Override
-  public void receiveEvent(int reactTag, String eventName, @Nullable WritableMap params) {
-    try {
-      long eventTarget = mFabricUIManager.getEventTarget(reactTag);
-      mScheduler.scheduleWork(new FabricUIManagerWork(eventTarget, eventName, params));
-    } catch (IllegalViewOperationException e) {
-      FLog.e(TAG, "Unable to emmit event for tag " + reactTag, e);
-    }
-  }
-
-  @Override
-  public void close() {
-    mScheduler.shutdown();
-  }
-
-  private class FabricUIManagerWork implements Work {
-    private final long mEventTarget;
-    private final String mEventName;
-    private final WritableMap mParams;
-
-    public FabricUIManagerWork(long eventTarget, String eventName, @Nullable WritableMap params) {
-      mEventTarget = eventTarget;
-      mEventName = eventName;
-      mParams = params;
-    }
-
-    @Override
-    public void run() {
-      try {
-        mFabricUIManager.invoke(mEventTarget, mEventName, mParams);
-      } catch (Throwable t) {
-        FLog.e(TAG, "Error sending event " + mEventName, t);
-        //TODO: manage exception properly
-      } finally{
-        // TODO(dvacca): We need to only release this after all shadow nodes
-        // have been released. The easiest way would be to adopt the event
-        // emitter approach from the C++ Fabric. For now, we'll just leak.
-        // mFabricUIManager.releaseEventTarget(mEventTarget);
-      }
-    }
-  }
-
-  @Override
-  public void receiveTouches(String eventTopLevelType, WritableArray touches,
-    WritableArray changedIndices) {
-    Pair<WritableArray, WritableArray> result =
-      TOP_TOUCH_END_KEY.equalsIgnoreCase(eventTopLevelType) ||
-        TOP_TOUCH_CANCEL_KEY.equalsIgnoreCase(eventTopLevelType)
-        ? removeTouchesAtIndices(touches, changedIndices)
-        : touchSubsequence(touches, changedIndices);
-
-    WritableArray changedTouches = result.first;
-    touches = result.second;
-
-    for (int jj = 0; jj < changedTouches.size(); jj++) {
-      WritableMap touch = getWritableMap(changedTouches.getMap(jj));
-      // Touch objects can fulfill the role of `DOM` `Event` objects if we set
-      // the `changedTouches`/`touches`. This saves allocations.
-      touch.putArray(CHANGED_TOUCHES_KEY, changedTouches);
-      touch.putArray(TOUCHES_KEY, touches);
-      WritableMap nativeEvent = touch;
-      int rootNodeID = 0;
-      int target = nativeEvent.getInt(TARGET_KEY);
-      if (target < 1) {
-        FLog.e(TAG,"A view is reporting that a touch occurred on tag zero.");
-      } else {
-        rootNodeID = target;
-      }
-      receiveEvent(rootNodeID, eventTopLevelType, touch);
-    }
-  }
-
-  /**
-   * Destroys `touches` by removing touch objects at indices `indices`. This is
-   * to maintain compatibility with W3C touch "end" events, where the active
-   * touches don't include the set that has just been "ended".
-   *
-   * This method was originally in ReactNativeRenderer.js
-   *
-   * TODO: this method is a copy from ReactNativeRenderer.removeTouchesAtIndices and it needs
-   * to be rewritten in a more efficient way,
-   *
-   * @param touches {@link WritableArray} Deserialized touch objects.
-   * @param indices {WritableArray} Indices to remove from `touches`.
-   * @return {Array<Touch>} Subsequence of removed touch objects.
-   */
-  private Pair<WritableArray, WritableArray> removeTouchesAtIndices(WritableArray touches, WritableArray indices) {
-    WritableArray rippedOut = new WritableNativeArray();
-    // use an unsafe downcast to alias to nullable elements,
-    // so we can delete and then compact.
-    WritableArray tempTouches = new WritableNativeArray();
-    Set<Integer> rippedOutIndices = new HashSet<>();
-    for (int i = 0; i < indices.size(); i++) {
-      int index = indices.getInt(i);
-      rippedOut.pushMap(getWritableMap(touches.getMap(index)));
-      rippedOutIndices.add(index);
-    }
-    for (int j = 0 ; j < touches.size() ; j++) {
-      if (!rippedOutIndices.contains(j)) {
-        tempTouches.pushMap(getWritableMap(touches.getMap(j)));
-      }
-    }
-
-    return new Pair<>(rippedOut, tempTouches);
-  }
-
-  /**
-   * Selects a subsequence of `Touch`es, without destroying `touches`.
-   *
-   * This method was originally in ReactNativeRenderer.js
-   *
-   * @param touches {@link WritableArray} Deserialized touch objects.
-   * @param changedIndices {@link WritableArray} Indices by which to pull subsequence.
-   * @return {Array<Touch>} Subsequence of touch objects.
-   */
-  private Pair<WritableArray, WritableArray> touchSubsequence(WritableArray touches, WritableArray changedIndices) {
-    WritableArray result = new WritableNativeArray();
-    for (int i = 0; i < changedIndices.size(); i++) {
-      result.pushMap(getWritableMap(touches.getMap(i)));
-    }
-    return new Pair<>(result, touches);
-  }
-
-  /**
-   * TODO: this is required because the WritableNativeArray.getMap() returns a ReadableMap instead
-   * of the original writableMap. this will change in the near future.
-   *
-   * @param readableMap {@link ReadableMap} source map
-   */
-  private WritableMap getWritableMap(ReadableMap readableMap) {
-    WritableNativeMap map = new WritableNativeMap();
-    map.merge(readableMap);
-    return map;
-  }
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/BUCK b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/BUCK
deleted file mode 100644
index 18312ac1c7a179..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/BUCK
+++ /dev/null
@@ -1,24 +0,0 @@
-load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "react_native_dep", "react_native_target", "rn_android_library")
-
-rn_android_library(
-    name = "jsc",
-    srcs = glob(["**/*.java"]),
-    provided_deps = [
-        react_native_dep("third-party/android/support/v4:lib-support-v4"),
-    ],
-    required_for_source_only_abi = True,
-    visibility = [
-        "PUBLIC",
-    ],
-    deps = [
-        react_native_dep("libraries/soloader/java/com/facebook/soloader:soloader"),
-        react_native_dep("third-party/java/infer-annotations:infer-annotations"),
-        react_native_target("java/com/facebook/react/bridge:bridge"),
-        react_native_target("java/com/facebook/react/fabric:fabric"),
-        react_native_target("java/com/facebook/react/fabric/jsc/jni:jni"),
-    ],
-    exported_deps = [
-        react_native_dep("java/com/facebook/jni:jni"),
-        react_native_dep("java/com/facebook/proguard/annotations:annotations"),
-    ],
-)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/FabricJSCBinding.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/FabricJSCBinding.java
deleted file mode 100644
index 92e82d41e51ea6..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/FabricJSCBinding.java
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.fabric.jsc;
-
-import com.facebook.jni.HybridData;
-import com.facebook.proguard.annotations.DoNotStrip;
-import com.facebook.react.bridge.JavaScriptContextHolder;
-import com.facebook.react.fabric.FabricBinding;
-import com.facebook.react.fabric.FabricUIManager;
-import com.facebook.react.bridge.NativeMap;
-import com.facebook.soloader.SoLoader;
-
-@DoNotStrip
-public class FabricJSCBinding implements FabricBinding {
-
-  static {
-    SoLoader.loadLibrary("fabricjscjni");
-  }
-
-  // used from native
-  @SuppressWarnings("unused")
-  private final HybridData mHybridData;
-
-  private static native HybridData initHybrid();
-
-  @Override
-  public native void releaseEventTarget(long jsContextNativePointer, long eventTargetPointer);
-
-  @Override
-  public native void releaseEventHandler(long jsContextNativePointer, long eventHandlerPointer);
-
-  @Override
-  public native void dispatchEventToEmptyTarget(
-    long jsContextNativePointer,
-    long eventHandlerPointer,
-    String type,
-    NativeMap payload
-  );
-
-  @Override
-  public native void dispatchEventToTarget(
-    long jsContextNativePointer,
-    long eventHandlerPointer,
-    long eventTargetPointer,
-    String type,
-    NativeMap payload
-  );
-
-  private native void installFabric(long jsContextNativePointer, Object fabricModule);
-
-  public FabricJSCBinding() {
-    mHybridData = initHybrid();
-  }
-
-  @Override
-  public void installFabric(JavaScriptContextHolder jsContext, FabricUIManager fabricModule) {
-    fabricModule.setBinding(this);
-    installFabric(jsContext.get(), fabricModule);
-  }
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/BUCK b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/BUCK
deleted file mode 100644
index 93a1a1c5ad5c86..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/BUCK
+++ /dev/null
@@ -1,21 +0,0 @@
-load("//ReactNative:DEFS.bzl", "ANDROID", "FBJNI_TARGET", "react_native_target", "react_native_xplat_target", "rn_xplat_cxx_library")
-
-rn_xplat_cxx_library(
-    name = "jni",
-    srcs = glob(["*.cpp"]),
-    headers = glob(["*.h"]),
-    compiler_flags = [
-        "-Wall",
-        "-fexceptions",
-        "-std=c++1y",
-    ],
-    platforms = ANDROID,
-    soname = "libfabricjscjni.$(ext)",
-    visibility = ["PUBLIC"],
-    deps = [
-        FBJNI_TARGET,
-        "xplat//folly:molly",
-        react_native_xplat_target("jschelpers:jschelpers"),
-        react_native_target("jni/react/jni:jni"),
-    ],
-)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.cpp b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.cpp
deleted file mode 100644
index 5717c930b6821e..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.cpp
+++ /dev/null
@@ -1,415 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "FabricJSCBinding.h"
-#include <fb/fbjni.h>
-#include <jschelpers/JavaScriptCore.h>
-#include <jschelpers/Unicode.h>
-
-using namespace facebook::jni;
-
-namespace facebook {
-namespace react {
-
-namespace {
-
-bool useCustomJSC = false;
-
-struct JList : public JavaClass<JList> {
-  static constexpr auto kJavaDescriptor = "Ljava/util/List;";
-};
-
-struct JShadowNode : public JavaClass<JShadowNode> {
-  static constexpr auto kJavaDescriptor = "Lcom/facebook/react/uimanager/ReactShadowNode;";
-};
-
-typedef struct FabricJSCUIManager {
-  FabricJSCUIManager(alias_ref<jobject> module, JSClassRef classRef, bool customJSC)
-    : wrapperObjectClassRef(classRef)
-    , useCustomJSC(customJSC) {
-    fabricUiManager = make_global(module);
-    JSC_JSClassRetain(useCustomJSC, wrapperObjectClassRef);
-  }
-  global_ref<jobject> fabricUiManager;
-  JSClassRef wrapperObjectClassRef;
-  bool useCustomJSC;
-
-  ~FabricJSCUIManager() {
-    JSC_JSClassRelease(useCustomJSC, wrapperObjectClassRef);
-  }
-} FabricJSCUIManager;
-
-jobject makePlainGlobalRef(jobject object) {
-  // When storing the global reference we need it to be a plain
-  // pointer. That's why we use plain jni instead of fbjni here.
-  return Environment::current()->NewGlobalRef(object);
-}
-
-local_ref<JString> JSValueToJString(JSContextRef ctx, JSValueRef value) {
-  JSStringRef strRef = JSC_JSValueToStringCopy(ctx, value, NULL);
-  const size_t size = JSStringGetMaximumUTF8CStringSize(strRef);
-  char buffer[size];
-  JSStringGetUTF8CString(strRef, buffer, size);
-  JSC_JSStringRelease(ctx, strRef);
-  return make_jstring(buffer);
-}
-
-local_ref<JShadowNode> JSValueToJShadowNode(JSContextRef ctx, JSValueRef value) {
-  JSObjectRef obj = JSC_JSValueToObject(ctx, value, NULL);
-  auto node = static_cast<JShadowNode::javaobject>(JSC_JSObjectGetPrivate(useCustomJSC, obj));
-  return make_local(node);
-}
-
-local_ref<JList> JSValueToJList(JSContextRef ctx, JSValueRef value) {
-  JSObjectRef obj = JSC_JSValueToObject(ctx, value, NULL);
-  auto node = static_cast<JList::javaobject>(JSC_JSObjectGetPrivate(useCustomJSC, obj));
-  return make_local(node);
-}
-
-local_ref<ReadableNativeMap::jhybridobject> JSValueToReadableMapViaJSON(JSContextRef ctx, JSValueRef value) {
-  JSStringRef jsonRef = JSC_JSValueCreateJSONString(ctx, value, 0, NULL);
-  size_t size = JSC_JSStringGetLength(ctx, jsonRef);
-  const JSChar* utf16 = JSC_JSStringGetCharactersPtr(ctx, jsonRef);
-  std::string json = unicode::utf16toUTF8(utf16, size);
-  JSC_JSStringRelease(ctx, jsonRef);
-  folly::dynamic dynamicValue = folly::parseJson(json);
-  return ReadableNativeMap::newObjectCxxArgs(std::move(dynamicValue));
-}
-
-JSValueRef ReadableMapToJSValueViaJSON(JSContextRef ctx, NativeMap *map) {
-  folly::dynamic dynamicValue = map->consume();
-  auto json = folly::toJson(dynamicValue);
-  JSStringRef jsonRef = JSC_JSStringCreateWithUTF8CString(ctx, json.c_str());
-  auto value = JSC_JSValueMakeFromJSONString(ctx, jsonRef);
-  JSC_JSStringRelease(ctx, jsonRef);
-  return value;
-}
-
-JSValueRef createNode(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto createNode =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JShadowNode>(jint, jstring, jint, ReadableNativeMap::javaobject, jlong)>("createNode");
-
-  int reactTag = (int)JSC_JSValueToNumber(ctx, arguments[0], NULL);
-  auto viewName = JSValueToJString(ctx, arguments[1]);
-  int rootTag = (int)JSC_JSValueToNumber(ctx, arguments[2], NULL);
-  auto props = JSC_JSValueIsNull(ctx, arguments[3]) ? local_ref<ReadableNativeMap::jhybridobject>(nullptr) :
-               JSValueToReadableMapViaJSON(ctx, arguments[3]);;
-  auto eventTarget = (void *)arguments[4];
-
-  auto node = createNode(manager, reactTag, viewName.get(), rootTag, props.get(), (jlong)eventTarget);
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(node.get()));
-}
-
-JSValueRef cloneNode(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto cloneNode =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JShadowNode>(JShadowNode::javaobject)>("cloneNode");
-
-  auto previousNode = JSValueToJShadowNode(ctx, arguments[0]);
-  auto newNode = cloneNode(manager, previousNode.get());
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(newNode.get()));
-}
-
-JSValueRef cloneNodeWithNewChildren(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto cloneNodeWithNewChildren =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JShadowNode>(JShadowNode::javaobject)>("cloneNodeWithNewChildren");
-
-  auto previousNode = JSValueToJShadowNode(ctx, arguments[0]);
-  auto newNode = cloneNodeWithNewChildren(manager, previousNode.get());
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(newNode.get()));
-}
-
-JSValueRef cloneNodeWithNewProps(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto cloneNodeWithNewProps =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JShadowNode>(JShadowNode::javaobject, ReadableNativeMap::javaobject)>("cloneNodeWithNewProps");
-
-  auto previousNode = JSValueToJShadowNode(ctx, arguments[0]);
-  auto props = JSValueToReadableMapViaJSON(ctx, arguments[1]);
-  auto newNode = cloneNodeWithNewProps(manager, previousNode.get(), props.get());
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(newNode.get()));
-}
-
-JSValueRef cloneNodeWithNewChildrenAndProps(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto cloneNodeWithNewChildrenAndProps =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JShadowNode>(JShadowNode::javaobject, ReadableNativeMap::javaobject)>("cloneNodeWithNewChildrenAndProps");
-
-  auto previousNode = JSValueToJShadowNode(ctx, arguments[0]);
-  auto props = JSValueToReadableMapViaJSON(ctx, arguments[1]);
-  auto newNode = cloneNodeWithNewChildrenAndProps(manager, previousNode.get(), props.get());
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(newNode.get()));
-}
-
-JSValueRef appendChild(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-
-  static auto appendChild =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<void(JShadowNode::javaobject, JShadowNode::javaobject)>("appendChild");
-
-  auto parentNode = JSValueToJShadowNode(ctx, arguments[0]);
-  auto childNode = JSValueToJShadowNode(ctx, arguments[1]);
-
-  appendChild(manager, parentNode.get(), childNode.get());
-
-  return JSC_JSValueMakeUndefined(ctx);
-}
-
-JSValueRef createChildSet(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-  JSClassRef classRef = managerWrapper->wrapperObjectClassRef;
-
-  static auto createChildSet =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<alias_ref<JList>(jint)>("createChildSet");
-
-  int rootTag = (int)JSC_JSValueToNumber(ctx, arguments[0], NULL);
-  auto childSet = createChildSet(manager, rootTag);
-
-  return JSC_JSObjectMake(ctx, classRef, makePlainGlobalRef(childSet.get()));
-}
-
-JSValueRef appendChildToSet(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-
-  static auto appendChildToSet =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<void(JList::javaobject, JShadowNode::javaobject)>("appendChildToSet");
-
-  auto childSet = JSValueToJList(ctx, arguments[0]);
-  auto childNode = JSValueToJShadowNode(ctx, arguments[1]);
-
-  appendChildToSet(manager, childSet.get(), childNode.get());
-
-  return JSC_JSValueMakeUndefined(ctx);
-}
-
-JSValueRef completeRoot(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-
-  static auto completeRoot =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<void(jint, JList::javaobject)>("completeRoot");
-
-  int rootTag = (int)JSC_JSValueToNumber(ctx, arguments[0], NULL);
-  auto childSet = JSValueToJList(ctx, arguments[1]);
-
-  completeRoot(manager, rootTag, childSet.get());
-
-  return JSC_JSValueMakeUndefined(ctx);
-}
-
-JSValueRef registerEventHandler(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef *exception) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, function);
-  alias_ref<jobject> manager = managerWrapper->fabricUiManager;
-
-  static auto registerEventHandler =
-    jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
-      ->getMethod<void(jlong)>("registerEventHandler");
-
-  auto eventHandler = arguments[0];
-  JSC_JSValueProtect(ctx, eventHandler);
-  registerEventHandler(manager, (jlong)eventHandler);
-
-  return JSC_JSValueMakeUndefined(ctx);
-}
-
-void finalizeJNIObject(JSObjectRef object) {
-  // Release whatever global ref object we're storing here.
-  jobject globalRef = (jobject)JSC_JSObjectGetPrivate(useCustomJSC, object);
-  Environment::current()->DeleteGlobalRef(globalRef);
-}
-
-void finalizeWrapper(JSObjectRef object) {
-  FabricJSCUIManager *managerWrapper = (FabricJSCUIManager *)JSC_JSObjectGetPrivate(useCustomJSC, object);
-  delete managerWrapper;
-}
-
-void addFabricMethod(
-  JSContextRef context,
-  jni::alias_ref<jobject> fabricModule,
-  JSClassRef nodeClassRef,
-  JSObjectRef module,
-  const char *name,
-  JSObjectCallAsFunctionCallback callback
-) {
-  JSClassDefinition definition = kJSClassDefinitionEmpty;
-  definition.callAsFunction = callback;
-  definition.finalize = finalizeWrapper;
-  JSClassRef classRef = JSC_JSClassCreate(useCustomJSC, &definition);
-  FabricJSCUIManager *managerWrapper = new FabricJSCUIManager(fabricModule, nodeClassRef, useCustomJSC);
-  JSObjectRef functionRef = JSC_JSObjectMake(context, classRef, managerWrapper);
-  JSC_JSClassRelease(useCustomJSC, classRef);
-
-  JSStringRef nameStr = JSC_JSStringCreateWithUTF8CString(context, name);
-  JSC_JSObjectSetProperty(context, module, nameStr, functionRef, kJSPropertyAttributeNone, NULL);
-  JSC_JSStringRelease(context, nameStr);
-}
-
-}
-
-jni::local_ref<FabricJSCBinding::jhybriddata> FabricJSCBinding::initHybrid(
-    jni::alias_ref<jclass>) {
-  return makeCxxInstance();
-}
-
-void FabricJSCBinding::releaseEventTarget(
-  jlong jsContextNativePointer,
-  jlong eventTargetPointer
-) {
-  // This is now a noop.
-}
-
-void FabricJSCBinding::releaseEventHandler(
-  jlong jsContextNativePointer,
-  jlong eventHandlerPointer
-) {
-  JSContextRef context = (JSContextRef)jsContextNativePointer;
-  JSValueRef value = (JSValueRef)((void *)eventHandlerPointer);
-  // Release this function.
-  JSC_JSValueUnprotect(context, value);
-}
-
-void FabricJSCBinding::dispatchEventToEmptyTarget(
-  jlong jsContextNativePointer,
-  jlong eventHandlerPointer,
-  std::string type,
-  NativeMap *payloadMap
-) {
-  JSContextRef context = (JSContextRef)jsContextNativePointer;
-  JSObjectRef eventHandler = (JSObjectRef)((void *)eventHandlerPointer);
-  JSValueRef eventTarget = JSC_JSValueMakeNull(context);
-
-  JSObjectRef thisArg = (JSObjectRef)JSC_JSValueMakeUndefined(context);
-  JSStringRef typeStr = JSC_JSStringCreateWithUTF8CString(context, type.c_str());
-  JSValueRef typeRef = JSC_JSValueMakeString(context, typeStr);
-  JSC_JSStringRelease(context, typeStr);
-  JSValueRef payloadRef = ReadableMapToJSValueViaJSON(context, payloadMap);
-  JSValueRef args[] = {eventTarget, typeRef, payloadRef};
-  JSValueRef exn;
-  JSValueRef result = JSC_JSObjectCallAsFunction(
-    context,
-    eventHandler,
-    thisArg,
-    3,
-    args,
-    &exn
-  );
-  if (!result) {
-    // TODO: Handle error in exn
-  }
-}
-
-void FabricJSCBinding::dispatchEventToTarget(
-  jlong jsContextNativePointer,
-  jlong eventHandlerPointer,
-  jlong eventTargetPointer,
-  std::string type,
-  NativeMap *payloadMap
-) {
-  JSContextRef context = (JSContextRef)jsContextNativePointer;
-  JSObjectRef eventHandler = (JSObjectRef)((void *)eventHandlerPointer);
-  JSObjectRef eventTarget = (JSObjectRef)((void *)eventTargetPointer);
-
-  JSObjectRef thisArg = (JSObjectRef)JSC_JSValueMakeUndefined(context);
-  JSStringRef typeStr = JSC_JSStringCreateWithUTF8CString(context, type.c_str());
-  JSValueRef typeRef = JSC_JSValueMakeString(context, typeStr);
-  JSC_JSStringRelease(context, typeStr);
-  JSValueRef payloadRef = ReadableMapToJSValueViaJSON(context, payloadMap);
-  JSValueRef args[] = {eventTarget, typeRef, payloadRef};
-  JSValueRef exn;
-  JSValueRef result = JSC_JSObjectCallAsFunction(
-    context,
-    eventHandler,
-    thisArg,
-    3,
-    args,
-    &exn
-  );
-  if (!result) {
-    // TODO: Handle error in exn
-  }
-}
-
-void FabricJSCBinding::installFabric(jlong jsContextNativePointer,
-    jni::alias_ref<jobject> fabricModule) {
-  JSContextRef context = (JSContextRef)jsContextNativePointer;
-  useCustomJSC = facebook::react::isCustomJSCPtr(context);
-
-  JSObjectRef module = JSC_JSObjectMake(context, NULL, NULL);
-
-  // Class definition for wrapper objects around nodes and sets
-  JSClassDefinition definition = kJSClassDefinitionEmpty;
-  definition.finalize = finalizeJNIObject;
-  JSClassRef classRef = JSC_JSClassCreate(useCustomJSC, &definition);
-
-  addFabricMethod(context, fabricModule, classRef, module, "createNode", createNode);
-  addFabricMethod(context, fabricModule, classRef, module, "cloneNode", cloneNode);
-  addFabricMethod(context, fabricModule, classRef, module, "cloneNodeWithNewChildren", cloneNodeWithNewChildren);
-  addFabricMethod(context, fabricModule, classRef, module, "cloneNodeWithNewProps", cloneNodeWithNewProps);
-  addFabricMethod(context, fabricModule, classRef, module, "cloneNodeWithNewChildrenAndProps", cloneNodeWithNewChildrenAndProps);
-
-  addFabricMethod(context, fabricModule, classRef, module, "appendChild", appendChild);
-  addFabricMethod(context, fabricModule, classRef, module, "createChildSet", createChildSet);
-  addFabricMethod(context, fabricModule, classRef, module, "appendChildToSet", appendChildToSet);
-  addFabricMethod(context, fabricModule, classRef, module, "completeRoot", completeRoot);
-
-  addFabricMethod(context, fabricModule, classRef, module, "registerEventHandler", registerEventHandler);
-
-  JSC_JSClassRelease(useCustomJSC, classRef);
-
-  JSObjectRef globalObject = JSC_JSContextGetGlobalObject(context);
-  JSStringRef globalName = JSC_JSStringCreateWithUTF8CString(context, "nativeFabricUIManager");
-  JSC_JSObjectSetProperty(context, globalObject, globalName, module, kJSPropertyAttributeNone, NULL);
-  JSC_JSStringRelease(context, globalName);
-}
-
-void FabricJSCBinding::registerNatives() {
-  registerHybrid({
-    makeNativeMethod("initHybrid", FabricJSCBinding::initHybrid),
-    makeNativeMethod("installFabric", FabricJSCBinding::installFabric),
-    makeNativeMethod("releaseEventTarget", FabricJSCBinding::releaseEventTarget),
-    makeNativeMethod("releaseEventHandler", FabricJSCBinding::releaseEventHandler),
-    makeNativeMethod("dispatchEventToEmptyTarget", FabricJSCBinding::dispatchEventToEmptyTarget),
-    makeNativeMethod("dispatchEventToTarget", FabricJSCBinding::dispatchEventToTarget),
-  });
-}
-
-}
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.h b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.h
deleted file mode 100644
index d47a0bb584d8cb..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/FabricJSCBinding.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <memory>
-#include <fb/fbjni.h>
-#include <react/jni/ReadableNativeMap.h>
-
-namespace facebook {
-namespace react {
-
-class Instance;
-
-class FabricJSCBinding : public jni::HybridClass<FabricJSCBinding> {
-public:
-  constexpr static const char *const kJavaDescriptor =
-    "Lcom/facebook/react/fabric/jsc/FabricJSCBinding;";
-
-  static void registerNatives();
-
-private:
-
-  static jni::local_ref<jhybriddata> initHybrid(jni::alias_ref<jclass>);
-
-  void releaseEventTarget(jlong jsContextNativePointer, jlong eventTargetPointer);
-
-  void releaseEventHandler(jlong jsContextNativePointer, jlong eventHandlerPointer);
-
-  void dispatchEventToEmptyTarget(
-    jlong jsContextNativePointer,
-    jlong eventHandlerPointer,
-    std::string type,
-    NativeMap *payload
-  );
-
-  void dispatchEventToTarget(
-    jlong jsContextNativePointer,
-    jlong eventHandlerPointer,
-    jlong eventTargetPointer,
-    std::string type,
-    NativeMap *payload
-  );
-
-  void installFabric(jlong jsContextNativePointer, jni::alias_ref<jobject> fabricModule);
-
-};
-
-}
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/OnLoad.cpp b/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/OnLoad.cpp
deleted file mode 100644
index e6b84dd24c9b63..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jsc/jni/OnLoad.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <fb/fbjni.h>
-#include <fb/xplat_init.h>
-
-#include "FabricJSCBinding.h"
-
-JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *) {
-  return facebook::xplat::initialize(vm, [] {
-    facebook::react::FabricJSCBinding::registerNatives();
-  });
-}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/Android.mk b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/Android.mk
index f7d59c3ad7f42d..794e6fa21bf5b3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/Android.mk
+++ b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/Android.mk
@@ -23,4 +23,4 @@ LOCAL_CFLAGS += -fvisibility=hidden -fexceptions -frtti
 LOCAL_STATIC_LIBRARIES := libjsi libjsireact
 LOCAL_SHARED_LIBRARIES := libfolly_json libfb libreactnativejni
 
-include $(BUILD_SHARED_LIBRARY)
\ No newline at end of file
+include $(BUILD_SHARED_LIBRARY)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutor.java b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutor.java
index 678d6cd8007bc5..7455dffb402e50 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutor.java
@@ -30,4 +30,3 @@ public String getName() {
 
   private static native HybridData initHybrid(ReadableNativeMap jscConfig);
 }
-
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutorFactory.java b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutorFactory.java
index 9e239aa9cec000..6405e51044c5d0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutorFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/jscexecutor/JSCExecutorFactory.java
@@ -33,5 +33,4 @@ public JavaScriptExecutor create() throws Exception {
   public String toString() {
     return "JSIExecutor+JSCRuntime";
   }
-}
-
+}
\ No newline at end of file
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jstasks/BUCK b/ReactAndroid/src/main/java/com/facebook/react/jstasks/BUCK
index 55fea181c649a5..fa2fc5ceadf033 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jstasks/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/jstasks/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "jstasks",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskConfig.java b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskConfig.java
index 5a9136fb908c23..f0e15451f7cd7e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskConfig.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskContext.java b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskContext.java
index 86196f0db99706..fbf38f1a41ee4a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskContext.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskContext.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskEventListener.java b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskEventListener.java
index af7acc6da72d55..420abed320edd5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskEventListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/jstasks/HeadlessJsTaskEventListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/BUCK b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/BUCK
index 738b5dc1c6d882..7cba50e9e02332 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "annotations",
@@ -9,6 +9,6 @@ rn_android_library(
     deps = [
         react_native_dep("third-party/java/infer-annotations:infer-annotations"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),
-        react_native_target("java/com/facebook/react/bridge:bridge"),
+        react_native_target("java/com/facebook/react/bridge:interfaces"),
     ],
 )
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModule.java b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModule.java
index e70ae678a44d9c..3ff3a56fba400c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,16 +7,14 @@
 
 package com.facebook.react.module.annotations;
 
-import java.lang.annotation.Retention;
-import java.lang.annotation.Target;
-
-import com.facebook.react.bridge.BaseJavaModule;
-
 import static java.lang.annotation.ElementType.TYPE;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
 /**
- * Annotation for use on {@link BaseJavaModule}s to describe properties for that module.
+ * Annotation for use on {@link com.facebook.react.bridge.BaseJavaModule}s to describe properties for that module.
  */
 @Retention(RUNTIME)
 @Target(TYPE)
@@ -44,4 +42,10 @@
    *  correct annotation is not included
    */
   boolean hasConstants() default true;
+
+  /**
+   * Indicates if a module is a C++ module or a Java Module
+   * @return
+   */
+  boolean isCxxModule() default false;
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java
index a2b13a407018ae..d23eb245f93a4c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/annotations/ReactModuleList.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -26,10 +26,4 @@
    * @return List of Native modules in the package.
    */
   Class<? extends NativeModule>[] nativeModules();
-
-  /**
-   * The View Managers in this list should be annotated with {@link ReactModule}.
-   * @return List of view manager in the package.
-   */
-  Class<? extends NativeModule>[] viewManagers() default {};
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/model/BUCK b/ReactAndroid/src/main/java/com/facebook/react/module/model/BUCK
index 85da7f8a66a823..b76f609c809272 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/model/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/model/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "model",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfo.java b/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfo.java
index 58b416df3a4c7e..198a6c58903440 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfo.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfo.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -16,14 +16,17 @@ public class ReactModuleInfo {
   private final boolean mNeedsEagerInit;
   private final boolean mHasConstants;
   private final boolean mIsCxxModule;
+  private String mClassName;
 
   public ReactModuleInfo(
     String name,
+    String className,
     boolean canOverrideExistingModule,
     boolean needsEagerInit,
     boolean hasConstants,
     boolean isCxxModule) {
     mName = name;
+    mClassName = className;
     mCanOverrideExistingModule = canOverrideExistingModule;
     mNeedsEagerInit = needsEagerInit;
     mHasConstants = hasConstants;
@@ -34,6 +37,8 @@ public String name() {
     return mName;
   }
 
+  public String className() {return mClassName;}
+
   public boolean canOverrideExistingModule() {
     return mCanOverrideExistingModule;
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfoProvider.java b/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfoProvider.java
index 54875ad93a8ff9..3d575a1ddf3666 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfoProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/model/ReactModuleInfoProvider.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/processing/BUCK b/ReactAndroid/src/main/java/com/facebook/react/module/processing/BUCK
index 02b554d8d26cb7..499d4fd614905a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/processing/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/processing/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_java_annotation_processor", "rn_java_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_java_annotation_processor", "rn_java_library")
 
 rn_java_annotation_processor(
     name = "processing",
@@ -21,7 +21,6 @@ rn_java_library(
         react_native_dep("third-party/java/javapoet:javapoet"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
-        react_native_target("java/com/facebook/react/bridge:bridge"),
         react_native_target("java/com/facebook/react/module/model:model"),
     ],
 )
diff --git a/ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java b/ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java
index 7137e3944dd240..65bcb3d09b9599 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java
@@ -1,11 +1,32 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 package com.facebook.react.module.processing;
 
-import com.facebook.react.bridge.CxxModuleWrapper;
+import static javax.lang.model.element.Modifier.PUBLIC;
+import static javax.tools.Diagnostic.Kind.ERROR;
+
+import com.facebook.infer.annotation.SuppressFieldNotInitialized;
+import com.facebook.react.module.annotations.ReactModule;
+import com.facebook.react.module.annotations.ReactModuleList;
+import com.facebook.react.module.model.ReactModuleInfo;
+import com.facebook.react.module.model.ReactModuleInfoProvider;
+import com.squareup.javapoet.ClassName;
+import com.squareup.javapoet.CodeBlock;
+import com.squareup.javapoet.JavaFile;
+import com.squareup.javapoet.MethodSpec;
+import com.squareup.javapoet.ParameterizedTypeName;
+import com.squareup.javapoet.TypeName;
+import com.squareup.javapoet.TypeSpec;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import javax.annotation.processing.AbstractProcessor;
 import javax.annotation.processing.Filer;
 import javax.annotation.processing.Messager;
@@ -14,7 +35,6 @@
 import javax.annotation.processing.SupportedAnnotationTypes;
 import javax.annotation.processing.SupportedSourceVersion;
 import javax.lang.model.SourceVersion;
-import javax.lang.model.element.AnnotationMirror;
 import javax.lang.model.element.Element;
 import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.Modifier;
@@ -24,31 +44,6 @@
 import javax.lang.model.util.Elements;
 import javax.lang.model.util.Types;
 
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.stream.Stream;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import com.facebook.infer.annotation.SuppressFieldNotInitialized;
-import com.facebook.react.module.annotations.ReactModule;
-import com.facebook.react.module.annotations.ReactModuleList;
-import com.facebook.react.module.model.ReactModuleInfo;
-import com.facebook.react.module.model.ReactModuleInfoProvider;
-
-import com.squareup.javapoet.ClassName;
-import com.squareup.javapoet.CodeBlock;
-import com.squareup.javapoet.JavaFile;
-import com.squareup.javapoet.MethodSpec;
-import com.squareup.javapoet.ParameterizedTypeName;
-import com.squareup.javapoet.TypeName;
-import com.squareup.javapoet.TypeSpec;
-
-import static javax.lang.model.element.Modifier.PUBLIC;
-import static javax.tools.Diagnostic.Kind.ERROR;
 
 /**
  * Generates a list of ReactModuleInfo for modules annotated with {@link ReactModule} in
@@ -158,8 +153,6 @@ private CodeBlock getCodeBlockForReactModuleInfos(List<String> nativeModules)
     } else {
       builder.addStatement("$T map = new $T()", MAP_TYPE, INSTANTIATED_MAP_TYPE);
 
-      TypeMirror cxxModuleWrapperTypeMirror = mElements.getTypeElement(CxxModuleWrapper.class.getName()).asType();
-
       for (String nativeModule : nativeModules) {
         String keyString = nativeModule;
 
@@ -189,19 +182,18 @@ private CodeBlock getCodeBlockForReactModuleInfos(List<String> nativeModules)
                       name -> name.contentEquals("getConstants") || name.contentEquals("getTypedExportedConstants"));
         }
 
-        boolean isCxxModule = mTypes.isAssignable(typeElement.asType(), cxxModuleWrapperTypeMirror);
-
         String valueString = new StringBuilder()
           .append("new ReactModuleInfo(")
           .append("\"").append(reactModule.name()).append("\"").append(", ")
-          .append(reactModule.canOverrideExistingModule()).append(", ")
+            .append("\"").append(keyString).append("\"").append(", ")
+           .append(reactModule.canOverrideExistingModule()).append(", ")
           .append(reactModule.needsEagerInit()).append(", ")
           .append(hasConstants).append(", ")
-          .append(isCxxModule)
+          .append(reactModule.isCxxModule())
           .append(")")
           .toString();
 
-        builder.addStatement("map.put(\"" + keyString + "\", " + valueString + ")");
+        builder.addStatement("map.put(\"" + reactModule.name() + "\", " + valueString + ")");
       }
       builder.addStatement("return map");
     }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/AccessibilityInfoModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/AccessibilityInfoModule.java
index e4e2b4eadf095f..ebc03ecb655bdc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/AccessibilityInfoModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/AccessibilityInfoModule.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -24,10 +24,12 @@
  * Module that monitors and provides information about the state of Touch Exploration service
  * on the device. For API >= 19.
  */
-@ReactModule(name = "AccessibilityInfo")
+@ReactModule(name = AccessibilityInfoModule.NAME)
 public class AccessibilityInfoModule extends ReactContextBaseJavaModule
         implements LifecycleEventListener {
 
+    public static final String NAME = "AccessibilityInfo";
+
     @TargetApi(19)
     private class ReactTouchExplorationStateChangeListener
             implements AccessibilityManager.TouchExplorationStateChangeListener {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/BUCK
index 2c9fcb5f44251a..be5241876638d7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/accessibilityinfo/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "accessibilityinfo",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/AppRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/AppRegistry.java
index 16b39acd67a9c0..da206630c3f6f5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/AppRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/AppRegistry.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/BUCK
index 34947b84a03c32..5ea989b39c9429 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/appregistry/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "appregistry",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/AppStateModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/AppStateModule.java
index f4bc26fbafedbf..4eebd65da29aed 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/AppStateModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/AppStateModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/BUCK
index 86d7baccaa09bb..74e84bf5f6d8fe 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/appstate/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "appstate",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BUCK
index 2674bdc7fde4e2..fd63d62e0f3770 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BUCK
@@ -1,10 +1,9 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "blob",
     srcs = glob(["**/*.java"]),
     provided_deps = [
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
     ],
     visibility = [
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobModule.java
index 379a5735ebd42c..9c64c966256a1b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobProvider.java b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobProvider.java
index 8e46ba7f0bd066..0f124314130bb1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/BlobProvider.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/FileReaderModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/FileReaderModule.java
index 88a15734836385..a5293261ad9876 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/blob/FileReaderModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/blob/FileReaderModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/BUCK
index 34cbb9cbbae8a2..75929307c49184 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "camera",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/CameraRollManager.java b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/CameraRollManager.java
index eb332268ad6690..21b8059a9718af 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/CameraRollManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/CameraRollManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -56,7 +56,7 @@
 @ReactModule(name = CameraRollManager.NAME)
 public class CameraRollManager extends ReactContextBaseJavaModule {
 
-  protected static final String NAME = "CameraRollManager";
+  public static final String NAME = "CameraRollManager";
 
   private static final String ERROR_UNABLE_TO_LOAD = "E_UNABLE_TO_LOAD";
   private static final String ERROR_UNABLE_TO_LOAD_PERMISSION = "E_UNABLE_TO_LOAD_PERMISSION";
@@ -443,7 +443,7 @@ private static boolean putImageInfo(
           retriever.release();
           photoDescriptor.close();
         }
-      } catch (IOException e) {
+      } catch (Exception e) {
         FLog.e(ReactConstants.TAG, "Could not get video metadata for " + photoUri.toString(), e);
         return false;
       }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
index 930a12fb757c19..417b7a002a59ae 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageEditingManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageStoreManager.java b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageStoreManager.java
index 5615bbd0d1a280..235cdd1931bb7a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageStoreManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/camera/ImageStoreManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/BUCK
index 246e8fb17b1170..9e0390ea8527b8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "clipboard",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/ClipboardModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/ClipboardModule.java
index 4aeaea2d7ba61b..15e6d0b5e04227 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/ClipboardModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/clipboard/ClipboardModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,16 +21,18 @@
 /**
  * A module that allows JS to get/set clipboard contents.
  */
-@ReactModule(name = "Clipboard")
+@ReactModule(name = ClipboardModule.NAME)
 public class ClipboardModule extends ContextBaseJavaModule {
 
   public ClipboardModule(Context context) {
     super(context);
   }
 
+  public static final String NAME = "Clipboard";
+
   @Override
   public String getName() {
-    return "Clipboard";
+    return ClipboardModule.NAME;
   }
 
   private ClipboardManager getClipboardService() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/common/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/common/BUCK
index 265fcc86a56bce..938ef3c649f912 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/common/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/common/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "common",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/common/ModuleDataCleaner.java b/ReactAndroid/src/main/java/com/facebook/react/modules/common/ModuleDataCleaner.java
index e085008dd48eda..b794529d0f1717 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/common/ModuleDataCleaner.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/common/ModuleDataCleaner.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/core/BUCK
index eb5205a4c1f3cd..57580c41a7f00e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "core",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ChoreographerCompat.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ChoreographerCompat.java
index cfa29c7af11f21..98a9eeebd6296e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ChoreographerCompat.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ChoreographerCompat.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,6 +13,7 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.view.Choreographer;
+import com.facebook.react.bridge.UiThreadUtil;
 
 /**
  * Wrapper class for abstracting away availability of the JellyBean Choreographer. If Choreographer
@@ -23,13 +24,17 @@ public class ChoreographerCompat {
   private static final long ONE_FRAME_MILLIS = 17;
   private static final boolean IS_JELLYBEAN_OR_HIGHER =
     Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
-  private static final ChoreographerCompat INSTANCE = new ChoreographerCompat();
+  private static ChoreographerCompat sInstance;
 
   private Handler mHandler;
   private Choreographer mChoreographer;
 
   public static ChoreographerCompat getInstance() {
-    return INSTANCE;
+    UiThreadUtil.assertOnUiThread();
+    if (sInstance == null){
+      sInstance = new ChoreographerCompat();
+    }
+    return sInstance;
   }
 
   private ChoreographerCompat() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/DefaultHardwareBackBtnHandler.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/DefaultHardwareBackBtnHandler.java
index ec0e92188f15a2..288f4032850405 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/DefaultHardwareBackBtnHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/DefaultHardwareBackBtnHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/DeviceEventManagerModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/DeviceEventManagerModule.java
index 11570143e09c87..56109af8af0ec1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/DeviceEventManagerModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/DeviceEventManagerModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -23,9 +23,9 @@
 /**
  * Native module that handles device hardware events like hardware back presses.
  */
-@ReactModule(name = "DeviceEventManager")
+@ReactModule(name = DeviceEventManagerModule.NAME)
 public class DeviceEventManagerModule extends ReactContextBaseJavaModule {
-
+  public static final String NAME = "DeviceEventManager";
   public interface RCTDeviceEventEmitter extends JavaScriptModule {
     void emit(String eventName, @Nullable Object data);
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ExceptionsManagerModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ExceptionsManagerModule.java
index c3b995baac638a..76f95a6a4415a2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ExceptionsManagerModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ExceptionsManagerModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,7 +20,7 @@
 @ReactModule(name = ExceptionsManagerModule.NAME)
 public class ExceptionsManagerModule extends BaseJavaModule {
 
-  protected static final String NAME = "ExceptionsManager";
+  public static final String NAME = "ExceptionsManager";
 
   private final DevSupportManager mDevSupportManager;
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/HeadlessJsTaskSupportModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/HeadlessJsTaskSupportModule.java
index 62fd4d553ac8d8..2d783585a77a6d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/HeadlessJsTaskSupportModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/HeadlessJsTaskSupportModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,10 +18,10 @@
  * Simple native module that allows JS to notify native of having completed some task work, so that
  * it can e.g. release any resources, stop timers etc.
  */
-@ReactModule(name = HeadlessJsTaskSupportModule.MODULE_NAME)
+@ReactModule(name = HeadlessJsTaskSupportModule.NAME)
 public class HeadlessJsTaskSupportModule extends ReactContextBaseJavaModule {
 
-  protected static final String MODULE_NAME = "HeadlessJsTaskSupport";
+  public static final String NAME = "HeadlessJsTaskSupport";
 
   public HeadlessJsTaskSupportModule(ReactApplicationContext reactContext) {
     super(reactContext);
@@ -29,7 +29,7 @@ public HeadlessJsTaskSupportModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return MODULE_NAME;
+    return NAME;
   }
 
   @ReactMethod
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/JSTimers.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/JSTimers.java
index 5520a713770211..9db79d5568bf40 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/JSTimers.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/JSTimers.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionAwareActivity.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionAwareActivity.java
index f8c780626c9a2c..8d1149220f08ab 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionAwareActivity.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionAwareActivity.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionListener.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionListener.java
index 205ce21c894e68..a8b524fa6c6a87 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/PermissionListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/RCTNativeAppEventEmitter.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/RCTNativeAppEventEmitter.java
index c59d8e0e11380c..2ec210fd09d1ef 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/RCTNativeAppEventEmitter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/RCTNativeAppEventEmitter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ReactChoreographer.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ReactChoreographer.java
index 653b9d999edbb1..d937d9eeb0ed4f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/ReactChoreographer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/ReactChoreographer.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,12 @@
 
 package com.facebook.react.modules.core;
 
+import com.facebook.react.bridge.UiThreadUtil;
 import java.util.ArrayDeque;
+import javax.annotation.Nullable;
 
 import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
-import com.facebook.react.bridge.UiThreadUtil;
 import com.facebook.react.common.ReactConstants;
 
 /**
@@ -65,7 +66,6 @@ private CallbackType(int order) {
 
   public static void initialize() {
     if (sInstance == null) {
-      UiThreadUtil.assertOnUiThread();
       sInstance = new ReactChoreographer();
     }
   }
@@ -75,7 +75,8 @@ public static ReactChoreographer getInstance() {
     return sInstance;
   }
 
-  private final ChoreographerCompat mChoreographer;
+  // This needs to be volatile due to double checked locking issue - https://fburl.com/z409owpf
+  private @Nullable volatile ChoreographerCompat mChoreographer;
   private final ReactChoreographerDispatcher mReactChoreographerDispatcher;
   private final ArrayDeque<ChoreographerCompat.FrameCallback>[] mCallbackQueues;
 
@@ -83,12 +84,12 @@ public static ReactChoreographer getInstance() {
   private boolean mHasPostedCallback = false;
 
   private ReactChoreographer() {
-    mChoreographer = ChoreographerCompat.getInstance();
     mReactChoreographerDispatcher = new ReactChoreographerDispatcher();
     mCallbackQueues = new ArrayDeque[CallbackType.values().length];
     for (int i = 0; i < mCallbackQueues.length; i++) {
       mCallbackQueues[i] = new ArrayDeque<>();
     }
+    initializeChoreographer(null);
   }
 
   public synchronized void postFrameCallback(
@@ -98,11 +99,40 @@ public synchronized void postFrameCallback(
     mTotalCallbacks++;
     Assertions.assertCondition(mTotalCallbacks > 0);
     if (!mHasPostedCallback) {
-      mChoreographer.postFrameCallback(mReactChoreographerDispatcher);
-      mHasPostedCallback = true;
+      if (mChoreographer == null) {
+        initializeChoreographer(new Runnable(){
+          @Override
+          public void run() {
+            postFrameCallbackOnChoreographer();
+          }
+        });
+      } else {
+        postFrameCallbackOnChoreographer();
+      }
     }
   }
 
+  public void postFrameCallbackOnChoreographer() {
+    mChoreographer.postFrameCallback(mReactChoreographerDispatcher);
+    mHasPostedCallback = true;
+  }
+
+  public void initializeChoreographer(@Nullable final Runnable runnable) {
+    UiThreadUtil.runOnUiThread(new Runnable() {
+      @Override
+      public void run() {
+        synchronized (ReactChoreographer.class) {
+          if (mChoreographer == null) {
+            mChoreographer = ChoreographerCompat.getInstance();
+          }
+        }
+        if (runnable != null) {
+          runnable.run();
+        }
+      }
+    });
+  }
+
   public synchronized void removeFrameCallback(
     CallbackType type,
     ChoreographerCompat.FrameCallback frameCallback) {
@@ -117,7 +147,9 @@ public synchronized void removeFrameCallback(
   private void maybeRemoveFrameCallback() {
     Assertions.assertCondition(mTotalCallbacks >= 0);
     if (mTotalCallbacks == 0 && mHasPostedCallback) {
-      mChoreographer.removeFrameCallback(mReactChoreographerDispatcher);
+      if (mChoreographer != null) {
+        mChoreographer.removeFrameCallback(mReactChoreographerDispatcher);
+      }
       mHasPostedCallback = false;
     }
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/core/Timing.java b/ReactAndroid/src/main/java/com/facebook/react/modules/core/Timing.java
index 0716ddaa56b6da..9fe45e741dca49 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/core/Timing.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/core/Timing.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -35,7 +35,7 @@
 public final class Timing extends ReactContextBaseJavaModule implements LifecycleEventListener,
   HeadlessJsTaskEventListener {
 
-  protected static final String NAME = "Timing";
+  public static final String NAME = "Timing";
 
   // These timing contants should be kept in sync with the ones in `JSTimers.js`.
   // The minimum time in milliseconds left in the frame to call idle callbacks.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/BUCK
index c8017cafb89ea2..edb587a8d9b68f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "datepicker",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogFragment.java
index 8ba3c5555205f2..db327d4bd1158a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogModule.java
index 8d531ce65dd323..8dfe5b49e9ce08 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerDialogModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,6 @@
 
 package com.facebook.react.modules.datepicker;
 
-import javax.annotation.Nullable;
-
-import java.util.Map;
-
 import android.app.Activity;
 import android.app.DatePickerDialog.OnDateSetListener;
 import android.app.DialogFragment;
@@ -19,23 +15,17 @@
 import android.content.DialogInterface.OnDismissListener;
 import android.os.Bundle;
 import android.widget.DatePicker;
-
-import com.facebook.react.bridge.NativeModule;
-import com.facebook.react.bridge.Promise;
-import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReactContextBaseJavaModule;
-import com.facebook.react.bridge.ReactMethod;
-import com.facebook.react.bridge.ReadableMap;
-import com.facebook.react.bridge.WritableMap;
-import com.facebook.react.bridge.WritableNativeMap;
+import com.facebook.react.bridge.*;
 import com.facebook.react.common.annotations.VisibleForTesting;
 import com.facebook.react.module.annotations.ReactModule;
 
+import javax.annotation.Nullable;
+
 /**
  * {@link NativeModule} that allows JS to show a native date picker dialog and get called back when
  * the user selects a date.
  */
-@ReactModule(name = "DatePickerAndroid")
+@ReactModule(name = DatePickerDialogModule.FRAGMENT_TAG)
 public class DatePickerDialogModule extends ReactContextBaseJavaModule {
 
   @VisibleForTesting
@@ -57,7 +47,7 @@ public DatePickerDialogModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "DatePickerAndroid";
+    return DatePickerDialogModule.FRAGMENT_TAG;
   }
 
   private class DatePickerDialogListener implements OnDateSetListener, OnDismissListener {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerMode.java b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerMode.java
index a499657a67d273..61dc5c620f9e8c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerMode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DatePickerMode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DismissableDatePickerDialog.java b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DismissableDatePickerDialog.java
index 18c3ea2faac9db..25017c2916dbc6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DismissableDatePickerDialog.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/DismissableDatePickerDialog.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/SupportDatePickerDialogFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/SupportDatePickerDialogFragment.java
index 582dc8c954e315..13d334692dbf3c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/SupportDatePickerDialogFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/datepicker/SupportDatePickerDialogFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/AnimationsDebugModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/AnimationsDebugModule.java
index 96884ba62a24b5..df103404c69580 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/AnimationsDebugModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/AnimationsDebugModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -59,7 +59,6 @@ public void startRecordingFps() {
     }
 
     mFrameCallback = new FpsDebugFrameCallback(
-                          ChoreographerCompat.getInstance(),
                           getReactApplicationContext());
     mFrameCallback.startAndRecordFpsAtEachFrame();
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/BUCK
index 8f301cc1f2d007..fdead3b97595a6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "debug",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/DidJSUpdateUiDuringFrameDetector.java b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/DidJSUpdateUiDuringFrameDetector.java
index f0a65ff1c77335..02171bf163f9d8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/DidJSUpdateUiDuringFrameDetector.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/DidJSUpdateUiDuringFrameDetector.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/FpsDebugFrameCallback.java b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/FpsDebugFrameCallback.java
index ee55407636be4b..eab166f2a66982 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/FpsDebugFrameCallback.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/FpsDebugFrameCallback.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,7 @@
 
 package com.facebook.react.modules.debug;
 
+import com.facebook.react.bridge.UiThreadUtil;
 import javax.annotation.Nullable;
 
 import java.util.Map;
@@ -59,7 +60,7 @@ public FpsInfo(
 
   private static final double EXPECTED_FRAME_TIME = 16.9;
 
-  private final ChoreographerCompat mChoreographer;
+  private @Nullable ChoreographerCompat mChoreographer;
   private final ReactContext mReactContext;
   private final UIManagerModule mUIManagerModule;
   private final DidJSUpdateUiDuringFrameDetector mDidJSUpdateUiDuringFrameDetector;
@@ -74,8 +75,7 @@ public FpsInfo(
   private boolean mIsRecordingFpsInfoAtEachFrame = false;
   private @Nullable TreeMap<Long, FpsInfo> mTimeToFps;
 
-  public FpsDebugFrameCallback(ChoreographerCompat choreographer, ReactContext reactContext) {
-    mChoreographer = choreographer;
+  public FpsDebugFrameCallback(ReactContext reactContext) {
     mReactContext = reactContext;
     mUIManagerModule = reactContext.getNativeModule(UIManagerModule.class);
     mDidJSUpdateUiDuringFrameDetector = new DidJSUpdateUiDuringFrameDetector();
@@ -120,8 +120,9 @@ public void doFrame(long l) {
       mTimeToFps.put(System.currentTimeMillis(), info);
     }
     mExpectedNumFramesPrev = expectedNumFrames;
-
-    mChoreographer.postFrameCallback(this);
+    if (mChoreographer != null) {
+      mChoreographer.postFrameCallback(this);
+    }
   }
 
   public void start() {
@@ -129,7 +130,14 @@ public void start() {
     mReactContext.getCatalystInstance().addBridgeIdleDebugListener(
         mDidJSUpdateUiDuringFrameDetector);
     mUIManagerModule.setViewHierarchyUpdateDebugListener(mDidJSUpdateUiDuringFrameDetector);
-    mChoreographer.postFrameCallback(this);
+    final FpsDebugFrameCallback fpsDebugFrameCallback = this;
+    UiThreadUtil.runOnUiThread(new Runnable() {
+      @Override
+      public void run() {
+        mChoreographer = ChoreographerCompat.getInstance();
+        mChoreographer.postFrameCallback(fpsDebugFrameCallback);
+      }
+    });
   }
 
   public void startAndRecordFpsAtEachFrame() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/SourceCodeModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/SourceCodeModule.java
index a631589365c6a3..b43061ea712203 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/SourceCodeModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/SourceCodeModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/interfaces/DeveloperSettings.java b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/interfaces/DeveloperSettings.java
index 9850d0e2722a30..79254fdbff95fe 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/debug/interfaces/DeveloperSettings.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/debug/interfaces/DeveloperSettings.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/BUCK
index 0b6a9250a7b381..76ee3429914464 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "deviceinfo",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/DeviceInfoModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/DeviceInfoModule.java
index 0b9e95b2401408..eb792e8c16e81c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/DeviceInfoModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/deviceinfo/DeviceInfoModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,11 +24,11 @@
 /**
  * Module that exposes Android Constants to JS.
  */
-@ReactModule(name = DeviceInfoModule.sModuleName)
+@ReactModule(name = DeviceInfoModule.NAME)
 public class DeviceInfoModule extends BaseJavaModule implements
     LifecycleEventListener {
 
-  static final String sModuleName = "DeviceInfo";
+  public static final String NAME = "DeviceInfo";
 
   private @Nullable ReactApplicationContext mReactApplicationContext;
   private float mFontScale;
@@ -47,7 +47,7 @@ public DeviceInfoModule(Context context) {
 
   @Override
   public String getName() {
-    return sModuleName;
+    return NAME;
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/AlertFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/AlertFragment.java
index ecb0229e32b15d..08d10e6cd88eac 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/AlertFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/AlertFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/BUCK
index 6f0bb554ba19f6..6736b020638945 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "dialog",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/DialogModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/DialogModule.java
index df1f45aca0e0e9..840028c50ebd89 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/DialogModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/DialogModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,17 +7,12 @@
 
 package com.facebook.react.modules.dialog;
 
-import javax.annotation.Nullable;
-
-import java.util.Map;
-
 import android.app.Activity;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.DialogInterface.OnDismissListener;
 import android.os.Bundle;
 import android.support.v4.app.FragmentActivity;
-
 import com.facebook.common.logging.FLog;
 import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.LifecycleEventListener;
@@ -29,6 +24,8 @@
 import com.facebook.react.bridge.UiThreadUtil;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.module.annotations.ReactModule;
+import java.util.Map;
+import javax.annotation.Nullable;
 
 @ReactModule(name = DialogModule.NAME)
 public class DialogModule extends ReactContextBaseJavaModule implements LifecycleEventListener {
@@ -36,7 +33,7 @@ public class DialogModule extends ReactContextBaseJavaModule implements Lifecycl
   /* package */ static final String FRAGMENT_TAG =
       "com.facebook.catalyst.react.dialog.DialogModule";
 
-  /* package */ static final String NAME = "DialogManagerAndroid";
+  public static final String NAME = "DialogManagerAndroid";
 
   /* package */ static final String ACTION_BUTTON_CLICKED = "buttonClicked";
   /* package */ static final String ACTION_DISMISSED = "dismissed";
@@ -110,13 +107,13 @@ private void dismissExisting() {
       if (isUsingSupportLibrary()) {
         SupportAlertFragment oldFragment =
             (SupportAlertFragment) mSupportFragmentManager.findFragmentByTag(FRAGMENT_TAG);
-        if (oldFragment != null) {
+        if (oldFragment != null && oldFragment.isResumed()) {
           oldFragment.dismiss();
         }
       } else {
         AlertFragment oldFragment =
             (AlertFragment) mFragmentManager.findFragmentByTag(FRAGMENT_TAG);
-        if (oldFragment != null) {
+        if (oldFragment != null && oldFragment.isResumed()) {
           oldFragment.dismiss();
         }
       }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/SupportAlertFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/SupportAlertFragment.java
index 0b360683d4dc45..5892a8502268e3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/SupportAlertFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/dialog/SupportAlertFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/BUCK
index 3286d603995e7f..b19a3c20bbc8df 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "fabric",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/ReactFabric.java b/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/ReactFabric.java
index fd0896bdd6fd8a..fbf3233688b64c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/ReactFabric.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fabric/ReactFabric.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.modules.fabric;
 
 import com.facebook.react.bridge.JavaScriptModule;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/BUCK
index 168d551e5de779..c3073b6db6d708 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/BUCK
@@ -1,10 +1,9 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "fresco",
     srcs = glob(["**/*.java"]),
     provided_deps = [
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
     ],
     visibility = [
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/FrescoModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/FrescoModule.java
index 40e0a22eb0cdb1..9ef9690cb4009e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/FrescoModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/FrescoModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -37,10 +37,11 @@
  *
  * <p>Does not expose any methods to JavaScript code. For initialization and cleanup only.
  */
-@ReactModule(name = "FrescoModule")
+@ReactModule(name = FrescoModule.NAME, needsEagerInit = true)
 public class FrescoModule extends ReactContextBaseJavaModule implements
     ModuleDataCleaner.Cleanable, LifecycleEventListener {
 
+  public static final String NAME = "FrescoModule";
   private final boolean mClearOnDestroy;
   private @Nullable ImagePipelineConfig mConfig;
 
@@ -114,7 +115,7 @@ public void initialize() {
 
   @Override
   public String getName() {
-    return "FrescoModule";
+    return NAME;
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactNetworkImageRequest.java b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactNetworkImageRequest.java
index 40f96f7aa515f3..2b5dc2a525791a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactNetworkImageRequest.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactNetworkImageRequest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactOkHttpNetworkFetcher.java b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactOkHttpNetworkFetcher.java
index 5b89fec6a50a95..e14f97081a2b45 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactOkHttpNetworkFetcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/ReactOkHttpNetworkFetcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/SystraceRequestListener.java b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/SystraceRequestListener.java
index 6cdcb5d7545d91..0ad43b0188c895 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/SystraceRequestListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/fresco/SystraceRequestListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/BUCK
index 3478c1e10e0ce4..b2ed1d5f32181f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "i18nmanager",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nManagerModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nManagerModule.java
index fdbf4b4ee62c9e..9e15606235ccf2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nManagerModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nManagerModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -19,9 +19,11 @@
 /**
  * {@link NativeModule} that allows JS to set allowRTL and get isRTL status.
  */
-@ReactModule(name = "I18nManager")
+@ReactModule(name = I18nManagerModule.NAME)
 public class I18nManagerModule extends ContextBaseJavaModule {
 
+  public static final String NAME = "I18nManager";
+
   private final I18nUtil sharedI18nUtilInstance = I18nUtil.getInstance();
 
   public I18nManagerModule(Context context) {
@@ -30,7 +32,7 @@ public I18nManagerModule(Context context) {
 
   @Override
   public String getName() {
-    return "I18nManager";
+    return NAME;
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nUtil.java b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nUtil.java
index 9bba7414285525..bd5b4c6b8d95c9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/image/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/image/BUCK
index efb0c040eea635..030dafb0faa714 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/image/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/image/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "image",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/image/ImageLoaderModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/image/ImageLoaderModule.java
index 3e10ad9262ef88..e6d5a49d0506c6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/image/ImageLoaderModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/image/ImageLoaderModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,13 +33,14 @@
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.module.annotations.ReactModule;
 
-@ReactModule(name = "ImageLoader")
+@ReactModule(name = ImageLoaderModule.NAME)
 public class ImageLoaderModule extends ReactContextBaseJavaModule implements
   LifecycleEventListener {
 
   private static final String ERROR_INVALID_URI = "E_INVALID_URI";
   private static final String ERROR_PREFETCH_FAILURE = "E_PREFETCH_FAILURE";
   private static final String ERROR_GET_SIZE_FAILURE = "E_GET_SIZE_FAILURE";
+  public static final String NAME = "ImageLoader";
 
   private final Object mCallerContext;
   private final Object mEnqueuedRequestMonitor = new Object();
@@ -57,7 +58,7 @@ public ImageLoaderModule(ReactApplicationContext reactContext, Object callerCont
 
   @Override
   public String getName() {
-    return "ImageLoader";
+    return NAME;
   }
 
   /**
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/intent/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/intent/BUCK
index 43083558b371ac..da676d6876ac67 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/intent/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/intent/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "intent",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/intent/IntentModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/intent/IntentModule.java
index 2a4c20ed56c352..0549cd4946644e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/intent/IntentModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/intent/IntentModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,16 +22,18 @@
 /**
  * Intent module. Launch other activities or open URLs.
  */
-@ReactModule(name = "IntentAndroid")
+@ReactModule(name = IntentModule.NAME)
 public class IntentModule extends ReactContextBaseJavaModule {
 
+  public static final String NAME = "IntentAndroid";
+
   public IntentModule(ReactApplicationContext reactContext) {
     super(reactContext);
   }
 
   @Override
   public String getName() {
-    return "IntentAndroid";
+    return NAME;
   }
 
   /**
@@ -79,7 +81,7 @@ public void openURL(String url, Promise promise) {
 
     try {
       Activity currentActivity = getCurrentActivity();
-      Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+      Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url).normalizeScheme());
 
       String selfPackageName = getReactApplicationContext().getPackageName();
       ComponentName componentName = intent.resolveActivity(
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/location/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/location/BUCK
index 360d381076b084..37df1e9b950d93 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/location/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/location/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "location",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java
index ba5059f93d471c..bc156c6d69bb20 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -31,9 +31,10 @@
 /**
  * Native module that exposes Geolocation to JS.
  */
-@ReactModule(name = "LocationObserver")
+@ReactModule(name = LocationModule.NAME)
 public class LocationModule extends ReactContextBaseJavaModule {
 
+  public static final String NAME = "LocationObserver";
   private @Nullable String mWatchedProvider;
   private static final float RCT_DEFAULT_LOCATION_ACCURACY = 100;
 
@@ -66,7 +67,7 @@ public LocationModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "LocationObserver";
+    return NAME;
   }
 
   private static class LocationOptions {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/location/PositionError.java b/ReactAndroid/src/main/java/com/facebook/react/modules/location/PositionError.java
index f8dffa5850ae07..b643382c831e7a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/location/PositionError.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/location/PositionError.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/BUCK
index 81b4e1f788e911..c17147a4ec8a5c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "netinfo",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/NetInfoModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/NetInfoModule.java
index 98c6a5f1761fa9..156a3ca026363e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/NetInfoModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/netinfo/NetInfoModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -30,7 +30,7 @@
 /**
  * Module that monitors and provides information about the connectivity state of the device.
  */
-@ReactModule(name = "NetInfo")
+@ReactModule(name = NetInfoModule.NAME)
 public class NetInfoModule extends ReactContextBaseJavaModule
     implements LifecycleEventListener {
 
@@ -59,6 +59,7 @@ public class NetInfoModule extends ReactContextBaseJavaModule
       "<uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" />";
 
   private static final String ERROR_MISSING_PERMISSION = "E_MISSING_PERMISSION";
+  public static final String NAME = "NetInfo";
 
   private final ConnectivityManager mConnectivityManager;
   private final ConnectivityBroadcastReceiver mConnectivityBroadcastReceiver;
@@ -96,13 +97,13 @@ public void initialize() {
 
   @Override
   public String getName() {
-    return "NetInfo";
+    return NAME;
   }
 
   @ReactMethod
   public void getCurrentConnectivity(Promise promise) {
     if (mNoNetworkPermission) {
-      promise.reject(ERROR_MISSING_PERMISSION, MISSING_PERMISSION_MESSAGE, null);
+      promise.reject(ERROR_MISSING_PERMISSION, MISSING_PERMISSION_MESSAGE);
       return;
     }
     promise.resolve(createConnectivityEventMap());
@@ -111,7 +112,7 @@ public void getCurrentConnectivity(Promise promise) {
   @ReactMethod
   public void isConnectionMetered(Promise promise) {
     if (mNoNetworkPermission) {
-      promise.reject(ERROR_MISSING_PERMISSION, MISSING_PERMISSION_MESSAGE, null);
+      promise.reject(ERROR_MISSING_PERMISSION, MISSING_PERMISSION_MESSAGE);
       return;
     }
     promise.resolve(ConnectivityManagerCompat.isActiveNetworkMetered(mConnectivityManager));
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/network/BUCK
index 76a899eb4b8097..4e9a5e2607909d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "network",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/CookieJarContainer.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/CookieJarContainer.java
index fcf375f08dd97d..6e58b76e91c37d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/CookieJarContainer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/CookieJarContainer.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.modules.network;
 
 import okhttp3.CookieJar;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ForwardingCookieHandler.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ForwardingCookieHandler.java
index 65a33066741ad7..222a7ce463652c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ForwardingCookieHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ForwardingCookieHandler.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -129,6 +129,7 @@ public void run() {
       for (String cookie : cookies) {
         addCookieAsync(url, cookie);
       }
+      getCookieManager().flush();
       mCookieSaver.onCookiesModified();
     }
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java
index 2f23bb15c1d806..a4d5116644718c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkInterceptorCreator.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkingModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkingModule.java
index 5534eb6449cf55..eb84d6e33d9c24 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkingModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/NetworkingModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -47,6 +47,8 @@
 import okhttp3.Response;
 import okhttp3.ResponseBody;
 import okio.ByteString;
+import okio.GzipSource;
+import okio.Okio;
 
 /**
  * Implements the XMLHttpRequest JavaScript interface.
@@ -161,7 +163,7 @@ public interface ResponseHandler {
    * @param context the ReactContext of the application
    */
   public NetworkingModule(final ReactApplicationContext context) {
-    this(context, null, OkHttpClientProvider.createClient(), null);
+    this(context, null, OkHttpClientProvider.createClient(context), null);
   }
 
   /**
@@ -172,7 +174,7 @@ public NetworkingModule(final ReactApplicationContext context) {
   public NetworkingModule(
     ReactApplicationContext context,
     List<NetworkInterceptorCreator> networkInterceptorCreators) {
-    this(context, null, OkHttpClientProvider.createClient(), networkInterceptorCreators);
+    this(context, null, OkHttpClientProvider.createClient(context), networkInterceptorCreators);
   }
 
   /**
@@ -181,7 +183,7 @@ public NetworkingModule(
    * caller does not provide one explicitly
    */
   public NetworkingModule(ReactApplicationContext context, String defaultUserAgent) {
-    this(context, defaultUserAgent, OkHttpClientProvider.createClient(), null);
+    this(context, defaultUserAgent, OkHttpClientProvider.createClient(context), null);
   }
 
   @Override
@@ -323,7 +325,7 @@ public void onProgress(long bytesWritten, long contentLength, boolean done) {
     // shared under the hood.
     // See https://github.com/square/okhttp/wiki/Recipes#per-call-configuration for more information
     if (timeout != mClient.connectTimeoutMillis()) {
-      clientBuilder.readTimeout(timeout, TimeUnit.MILLISECONDS);
+      clientBuilder.connectTimeout(timeout, TimeUnit.MILLISECONDS);
     }
     OkHttpClient client = clientBuilder.build();
 
@@ -454,8 +456,26 @@ public void onResponse(Call call, Response response) throws IOException {
               translateHeaders(response.headers()),
               response.request().url().toString());
 
-            ResponseBody responseBody = response.body();
             try {
+              // OkHttp implements something called transparent gzip, which mean that it will
+              // automatically add the Accept-Encoding gzip header and handle decoding internally.
+              // The issue is that it won't handle decoding if the user provides a Accept-Encoding
+              // header. This is also undesirable considering that iOS does handle the decoding even
+              // when the header is provided. To make sure this works in all cases, handle gzip body
+              // here also. This works fine since OKHttp will remove the Content-Encoding header if
+              // it used transparent gzip.
+              // See https://github.com/square/okhttp/blob/5b37cda9e00626f43acf354df145fd452c3031f1/okhttp/src/main/java/okhttp3/internal/http/BridgeInterceptor.java#L76-L111
+              ResponseBody responseBody = response.body();
+              if ("gzip".equalsIgnoreCase(response.header("Content-Encoding")) &&
+                  responseBody != null) {
+                GzipSource gzipSource = new GzipSource(responseBody.source());
+                String contentType = response.header("Content-Type");
+                responseBody = ResponseBody.create(
+                    contentType != null ? MediaType.parse(contentType) : null,
+                    -1L,
+                    Okio.buffer(gzipSource));
+              }
+
               // Check if a handler is registered
               for (ResponseHandler handler : mResponseHandlers) {
                 if (handler.supports(responseType)) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientFactory.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientFactory.java
index 25d2e521106d74..9baf4887799348 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientProvider.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientProvider.java
index 766290c40e067b..e3dde87abf68d4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientProvider.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,16 +7,19 @@
 
 package com.facebook.react.modules.network;
 
+import android.content.Context;
 import android.os.Build;
 
 import com.facebook.common.logging.FLog;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 import javax.annotation.Nullable;
 
+import okhttp3.Cache;
 import okhttp3.ConnectionSpec;
 import okhttp3.OkHttpClient;
 import okhttp3.TlsVersion;
@@ -57,6 +60,13 @@ public static OkHttpClient createClient() {
     return createClientBuilder().build();
   }
 
+  public static OkHttpClient createClient(Context context) {
+    if (sFactory != null) {
+      return sFactory.createNewNetworkModuleClient();
+    }
+    return createClientBuilder(context).build();
+  }
+
   public static OkHttpClient.Builder createClientBuilder() {
     // No timeouts by default
     OkHttpClient.Builder client = new OkHttpClient.Builder()
@@ -68,6 +78,24 @@ public static OkHttpClient.Builder createClientBuilder() {
     return enableTls12OnPreLollipop(client);
   }
 
+  public static OkHttpClient.Builder createClientBuilder(Context context) {
+    int cacheSize = 10 * 1024 * 1024; // 10 Mo
+    return createClientBuilder(context, cacheSize);
+  }
+
+  public static OkHttpClient.Builder createClientBuilder(Context context, int cacheSize) {
+    OkHttpClient.Builder client = createClientBuilder();
+
+    if (cacheSize == 0) {
+      return client;
+    }
+
+    File cacheDirectory = new File(context.getCacheDir(), "http-cache");
+    Cache cache = new Cache(cacheDirectory, cacheSize);
+
+    return client.cache(cache);
+  }
+
   /*
     On Android 4.1-4.4 (API level 16 to 19) TLS 1.1 and 1.2 are
     available but not enabled by default. The following method
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java
index 19376825dff0d6..cafbfba4f5cd5c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressRequestBody.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressRequestBody.java
index 3094732afea37a..e86a2c5e63b898 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressRequestBody.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressRequestBody.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressResponseBody.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressResponseBody.java
index 66c439820ddddf..6075ec9d82e367 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressResponseBody.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressResponseBody.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressiveStringDecoder.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressiveStringDecoder.java
index afc6fdd94d26d0..45a1fe298a5157 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressiveStringDecoder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ProgressiveStringDecoder.java
@@ -1,5 +1,5 @@
 /**
-* Copyright (c) 2017-present, Facebook, Inc.
+* Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ReactCookieJarContainer.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ReactCookieJarContainer.java
index 370586fa50ca9c..0589bfd1705b2b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ReactCookieJarContainer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ReactCookieJarContainer.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.modules.network;
 
 import java.util.ArrayList;
@@ -12,8 +19,8 @@
 import okhttp3.HttpUrl;
 
 /**
- * Basic okhttp3 CookieJar container 
- */ 
+ * Basic okhttp3 CookieJar container
+ */
 public class ReactCookieJarContainer implements CookieJarContainer {
 
   @Nullable
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/RequestBodyUtil.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/RequestBodyUtil.java
index 2f4c13c32c48e4..f3eeb3895486e2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/RequestBodyUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/RequestBodyUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ResponseUtil.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ResponseUtil.java
index 5d009245d0312b..f163ae7746792c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/ResponseUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/ResponseUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/network/TLSSocketFactory.java b/ReactAndroid/src/main/java/com/facebook/react/modules/network/TLSSocketFactory.java
index 0cd441e6fb5c07..9c6037426221f6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/network/TLSSocketFactory.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/network/TLSSocketFactory.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/BUCK
index 42266b65e8d778..224c3a735dc73a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "permissions",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/PermissionsModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/PermissionsModule.java
index 26701edd94cda7..dd7c123769571b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/PermissionsModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/permissions/PermissionsModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,10 +29,11 @@
 /**
  * Module that exposes the Android M Permission system to JS.
  */
-@ReactModule(name = "PermissionsAndroid")
+@ReactModule(name = PermissionsModule.NAME)
 public class PermissionsModule extends ReactContextBaseJavaModule implements PermissionListener {
 
   private static final String ERROR_INVALID_ACTIVITY = "E_INVALID_ACTIVITY";
+  public static final String NAME = "PermissionsAndroid";
   private final SparseArray<Callback> mCallbacks;
   private int mRequestCode = 0;
   private final String GRANTED = "granted";
@@ -46,7 +47,7 @@ public PermissionsModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "PermissionsAndroid";
+    return NAME;
   }
 
   /**
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/share/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/share/BUCK
index 13ca4479af5296..2fd9a5a6e61215 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/share/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/share/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "share",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/share/ShareModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/share/ShareModule.java
index aa9717e0b3bc15..ccfab744eb4974 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/share/ShareModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/share/ShareModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/BUCK
index 525ff3d930ad2b..998fcbf3ff1d4d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "statusbar",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/StatusBarModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/StatusBarModule.java
index 333b5ce5a4e788..ce7a96f93ca895 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/StatusBarModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/statusbar/StatusBarModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -34,10 +34,11 @@
 /**
  * {@link NativeModule} that allows changing the appearance of the status bar.
  */
-@ReactModule(name = "StatusBarManager")
+@ReactModule(name = StatusBarModule.NAME)
 public class StatusBarModule extends ReactContextBaseJavaModule {
 
   private static final String HEIGHT_KEY = "HEIGHT";
+  public static final String NAME = "StatusBarManager";
 
   public StatusBarModule(ReactApplicationContext reactContext) {
     super(reactContext);
@@ -45,7 +46,7 @@ public StatusBarModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "StatusBarManager";
+    return NAME;
   }
 
   @Override
@@ -165,7 +166,7 @@ public void run() {
   }
 
   @ReactMethod
-  public void setStyle(final String style) {
+  public void setStyle(@Nullable final String style) {
     final Activity activity = getCurrentActivity();
     if (activity == null) {
       FLog.w(ReactConstants.TAG, "StatusBarModule: Ignored status bar change, current activity is null.");
@@ -180,7 +181,7 @@ public void setStyle(final String style) {
           public void run() {
             View decorView = activity.getWindow().getDecorView();
             decorView.setSystemUiVisibility(
-              style.equals("dark-content") ? View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0);
+              "dark-content".equals(style) ? View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0);
           }
         }
       );
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncLocalStorageUtil.java b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncLocalStorageUtil.java
index 11f9a569e655e2..9efcad6416764e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncLocalStorageUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncLocalStorageUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageErrorUtil.java b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageErrorUtil.java
index 381b46bd02d7bf..fa5436ce00976d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageErrorUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageErrorUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageModule.java
index 6aa355f27545ab..ad3bed5cdf4a11 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/AsyncStorageModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -38,7 +38,7 @@
 public final class AsyncStorageModule
     extends ReactContextBaseJavaModule implements ModuleDataCleaner.Cleanable {
 
-  protected static final String NAME = "AsyncSQLiteDBStorage";
+  public static final String NAME = "AsyncSQLiteDBStorage";
 
   // SQL variable number limit, defined by SQLITE_LIMIT_VARIABLE_NUMBER:
   // https://raw.githubusercontent.com/android/platform_external_sqlite/master/dist/sqlite3.c
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/BUCK
index be8391c2ad21d5..237ba8a039ea99 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "storage",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/ReactDatabaseSupplier.java b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/ReactDatabaseSupplier.java
index 6e845fb802dd26..bcbb7f270d93d2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/storage/ReactDatabaseSupplier.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/storage/ReactDatabaseSupplier.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoHelpers.java b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoHelpers.java
index da1e3fad8946be..01d3c6abbff6d6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoHelpers.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoHelpers.java
@@ -1,23 +1,33 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 package com.facebook.react.modules.systeminfo;
 
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.Locale;
 
 import android.os.Build;
 
+import com.facebook.common.logging.FLog;
+
 public class AndroidInfoHelpers {
 
   public static final String EMULATOR_LOCALHOST = "10.0.2.2";
   public static final String GENYMOTION_LOCALHOST = "10.0.3.2";
   public static final String DEVICE_LOCALHOST = "localhost";
 
+  public static final String METRO_HOST_PROP_NAME = "metro.host";
+
   private static final int DEBUG_SERVER_HOST_PORT = 8081;
   private static final int INSPECTOR_PROXY_PORT = 8082;
 
+  private static final String TAG = AndroidInfoHelpers.class.getSimpleName();
+
   private static boolean isRunningOnGenymotion() {
     return Build.FINGERPRINT.contains("vbox");
   }
@@ -49,7 +59,10 @@ private static String getServerIpAddress(int port) {
     // We detect whether app runs on genymotion and replace js bundle server hostname accordingly
 
     String ipAddress;
-    if (isRunningOnGenymotion()) {
+    String metroHostProp = getMetroHostPropValue();
+    if (!metroHostProp.equals("")) {
+      ipAddress = metroHostProp;
+    } else if (isRunningOnGenymotion()) {
       ipAddress = GENYMOTION_LOCALHOST;
     } else if (isRunningOnStockEmulator()) {
       ipAddress = EMULATOR_LOCALHOST;
@@ -59,4 +72,41 @@ private static String getServerIpAddress(int port) {
 
     return String.format(Locale.US, "%s:%d", ipAddress, port);
   }
+
+  private static String metroHostPropValue = null;
+  private static synchronized String getMetroHostPropValue() {
+    if (metroHostPropValue != null) {
+      return metroHostPropValue;
+    }
+    Process process = null;
+    BufferedReader reader = null;
+    try {
+      process =
+          Runtime.getRuntime().exec(new String[] {"/system/bin/getprop", METRO_HOST_PROP_NAME});
+      reader =
+          new BufferedReader(
+              new InputStreamReader(process.getInputStream(), Charset.forName("UTF-8")));
+
+      String lastLine = "";
+      String line;
+      while ((line = reader.readLine()) != null) {
+        lastLine = line;
+      }
+      metroHostPropValue = lastLine;
+    } catch (Exception e) {
+      FLog.w(TAG, "Failed to query for metro.host prop:", e);
+      metroHostPropValue = "";
+    } finally {
+      try {
+        if (reader != null) {
+          reader.close();
+        }
+      } catch (Exception exc) {
+      }
+      if (process != null) {
+        process.destroy();
+      }
+    }
+    return metroHostPropValue;
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoModule.java
index bc62a544f6d347..3860cb9671f4f9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/AndroidInfoModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,6 +14,8 @@
 
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.module.annotations.ReactModule;
 
 import java.util.HashMap;
@@ -26,9 +28,9 @@
 /**
  * Module that exposes Android Constants to JS.
  */
-@ReactModule(name = "PlatformConstants")
+@ReactModule(name = AndroidInfoModule.NAME)
 public class AndroidInfoModule extends ReactContextBaseJavaModule {
-
+  public static final String NAME = "PlatformConstants";
   private static final String IS_TESTING = "IS_TESTING";
 
   public AndroidInfoModule(ReactApplicationContext reactContext) {
@@ -69,11 +71,17 @@ public String getName() {
     constants.put("Serial", Build.SERIAL);
     constants.put("Fingerprint", Build.FINGERPRINT);
     constants.put("Model", Build.MODEL);
-    constants.put("ServerHost", AndroidInfoHelpers.getServerHost());
+    if (ReactBuildConfig.DEBUG) {
+      constants.put("ServerHost", AndroidInfoHelpers.getServerHost());
+    }
     constants.put("isTesting", "true".equals(System.getProperty(IS_TESTING)));
     constants.put("reactNativeVersion", ReactNativeVersion.VERSION);
     constants.put("uiMode", uiMode());
-    constants.put("androidID", Secure.getString(getReactApplicationContext().getContentResolver(), Secure.ANDROID_ID));
     return constants;
   }
+
+  @ReactMethod(isBlockingSynchronousMethod = true)
+  public String getAndroidID(){
+    return Secure.getString(getReactApplicationContext().getContentResolver(),Secure.ANDROID_ID);
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/BUCK
index cd24044b70b8ac..396d6c574e3046 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "systeminfo",
@@ -29,6 +29,7 @@ rn_android_library(
         "PUBLIC",
     ],
     deps = [
+        react_native_dep("libraries/fbcore/src/main/java/com/facebook/common/logging:logging"),
         react_native_dep("third-party/java/infer-annotations:infer-annotations"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),
     ],
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/ReactNativeVersion.java b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/ReactNativeVersion.java
index 9e8ac43662b364..aadd129293de06 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/ReactNativeVersion.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/systeminfo/ReactNativeVersion.java
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,7 +16,7 @@
 public class ReactNativeVersion {
   public static final Map<String, Object> VERSION = MapBuilder.<String, Object>of(
       "major", 0,
-      "minor", 0,
-      "patch", 0,
+      "minor", 58,
+      "patch", 6,
       "prerelease", null);
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/BUCK
index 5b51a3ef489e2c..51685f7d9dec48 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "timepicker",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/DismissableTimePickerDialog.java b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/DismissableTimePickerDialog.java
index 8e59a1b482dc8e..3a4d215b4b09a1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/DismissableTimePickerDialog.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/DismissableTimePickerDialog.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/SupportTimePickerDialogFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/SupportTimePickerDialogFragment.java
index 3dc5579cbd49e1..62a448c35a9e51 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/SupportTimePickerDialogFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/SupportTimePickerDialogFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogFragment.java b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogFragment.java
index a5bf836efd5557..a76b3b41c114ff 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogFragment.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogFragment.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogModule.java
index d74f3a712ddca7..f6184458759d02 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerDialogModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,7 +33,7 @@
  * {@link NativeModule} that allows JS to show a native time picker dialog and get called back when
  * the user selects a time.
  */
-@ReactModule(name = "TimePickerAndroid")
+@ReactModule(name = TimePickerDialogModule.FRAGMENT_TAG)
 public class TimePickerDialogModule extends ReactContextBaseJavaModule {
 
   @VisibleForTesting
@@ -54,7 +54,7 @@ public TimePickerDialogModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "TimePickerAndroid";
+    return FRAGMENT_TAG;
   }
 
   private class TimePickerDialogListener implements OnTimeSetListener, OnDismissListener {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerMode.java b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerMode.java
index 26657481c87ea6..2b8243ef8ab3a6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerMode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/timepicker/TimePickerMode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/toast/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/toast/BUCK
index 83e213e1ea8d3f..9fa4212d088da9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/toast/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/toast/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "toast",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/toast/ToastModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/toast/ToastModule.java
index a75f1a9a995cd0..057c5771884011 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/toast/ToastModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/toast/ToastModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -21,7 +21,7 @@
 /**
  * {@link NativeModule} that allows JS to show an Android Toast.
  */
-@ReactModule(name = "ToastAndroid")
+@ReactModule(name = ToastModule.NAME)
 public class ToastModule extends ReactContextBaseJavaModule {
 
   private static final String DURATION_SHORT_KEY = "SHORT";
@@ -30,6 +30,7 @@ public class ToastModule extends ReactContextBaseJavaModule {
   private static final String GRAVITY_TOP_KEY = "TOP";
   private static final String GRAVITY_BOTTOM_KEY = "BOTTOM";
   private static final String GRAVITY_CENTER = "CENTER";
+  public static final String NAME = "ToastAndroid";
 
   public ToastModule(ReactApplicationContext reactContext) {
     super(reactContext);
@@ -37,7 +38,7 @@ public ToastModule(ReactApplicationContext reactContext) {
 
   @Override
   public String getName() {
-    return "ToastAndroid";
+    return NAME;
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/BUCK
index 43ce290d72fb55..1373eef72f9bb0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "vibration",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/VibrationModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/VibrationModule.java
index 8d92f019337044..a224b556af4464 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/VibrationModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/vibration/VibrationModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,16 +16,18 @@
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.module.annotations.ReactModule;
 
-@ReactModule(name = "Vibration")
+@ReactModule(name = VibrationModule.NAME)
 public class VibrationModule extends ReactContextBaseJavaModule {
 
+  public static final String NAME = "Vibration";
+
   public VibrationModule(ReactApplicationContext reactContext) {
     super(reactContext);
   }
 
   @Override
   public String getName() {
-    return "Vibration";
+    return NAME;
   }
 
   @ReactMethod
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/BUCK b/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/BUCK
index 989d4ce0e8e3dd..22b82d1099c06f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "websocket",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.java b/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.java
index fcdb890f8c4632..f28f271f7f043a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,10 +25,10 @@
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Nullable;
 import okhttp3.OkHttpClient;
@@ -38,9 +38,9 @@
 import okhttp3.WebSocketListener;
 import okio.ByteString;
 
-@ReactModule(name = "WebSocketModule", hasConstants = false)
+@ReactModule(name = WebSocketModule.NAME, hasConstants = false)
 public final class WebSocketModule extends ReactContextBaseJavaModule {
-
+  public static final String NAME="WebSocketModule";
   public interface ContentHandler {
     void onMessage(String text, WritableMap params);
 
@@ -67,7 +67,7 @@ private void sendEvent(String eventName, WritableMap params) {
 
   @Override
   public String getName() {
-    return "WebSocketModule";
+    return NAME;
   }
 
   public void setContentHandler(final int id, final ContentHandler contentHandler) {
@@ -147,6 +147,11 @@ public void onOpen(WebSocket webSocket, Response response) {
             sendEvent("websocketOpen", params);
           }
 
+          @Override
+          public void onClosing(WebSocket websocket, int code, String reason) {
+            websocket.close(code, reason);
+          }
+
           @Override
           public void onClosed(WebSocket webSocket, int code, String reason) {
             WritableMap params = Arguments.createMap();
@@ -352,7 +357,7 @@ private static String getDefaultOrigin(String uri) {
           requestURI.getHost(),
           requestURI.getPort());
       } else {
-        defaultOrigin = String.format("%s://%s/", scheme, requestURI.getHost());
+        defaultOrigin = String.format("%s://%s", scheme, requestURI.getHost());
       }
 
       return defaultOrigin;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/BUCK b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/BUCK
index e0aa169fd21e9e..50ffba0ad27f64 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "packagerconnection",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
index 11cb364573728c..44c910bee5cfc9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/JSPackagerClient.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/JSPackagerClient.java
index 50340d6d5fe622..d7ddfe667e6067 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/JSPackagerClient.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/JSPackagerClient.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
index 1ff1f2c6e149a8..c88f04ff183750 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
index 5ef2b73f7bc58b..98ac8cff7f552e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/ReconnectingWebSocket.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/ReconnectingWebSocket.java
index 46cfb6d907a196..daef24c9f9bedd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/ReconnectingWebSocket.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/ReconnectingWebSocket.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestHandler.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestHandler.java
index d6f97f97132a78..52504ded26027b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
index d4af3571fc736f..05520d541561c8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/Responder.java b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/Responder.java
index c2d4a1f5d4792d..870508c2ad5545 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/Responder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/Responder.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/processing/BUCK b/ReactAndroid/src/main/java/com/facebook/react/processing/BUCK
index 8f5f99f989092c..d23f9fbcf71c40 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/processing/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/processing/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_java_annotation_processor", "rn_java_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_java_annotation_processor", "rn_java_library")
 
 rn_java_annotation_processor(
     name = "processing",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/processing/ReactPropertyProcessor.java b/ReactAndroid/src/main/java/com/facebook/react/processing/ReactPropertyProcessor.java
index 9b9b94607c81e1..f9742ac08d0ab8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/processing/ReactPropertyProcessor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/processing/ReactPropertyProcessor.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/shell/BUCK b/ReactAndroid/src/main/java/com/facebook/react/shell/BUCK
index 121b765b09c456..841944ec0e765a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/shell/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/shell/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "shell",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/shell/MainPackageConfig.java b/ReactAndroid/src/main/java/com/facebook/react/shell/MainPackageConfig.java
index 388709b87eaaeb..62c20cfc433c11 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/shell/MainPackageConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/shell/MainPackageConfig.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/shell/MainReactPackage.java b/ReactAndroid/src/main/java/com/facebook/react/shell/MainReactPackage.java
index df65bb5b69cc1f..31a871d5efaca3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/shell/MainReactPackage.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/shell/MainReactPackage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/touch/BUCK b/ReactAndroid/src/main/java/com/facebook/react/touch/BUCK
index c4b885f791b661..865b37c05922e4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/touch/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/touch/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "touch",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/touch/JSResponderHandler.java b/ReactAndroid/src/main/java/com/facebook/react/touch/JSResponderHandler.java
index c206bc725752b3..b6c79d4fa64d80 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/touch/JSResponderHandler.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/touch/JSResponderHandler.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/touch/OnInterceptTouchEventListener.java b/ReactAndroid/src/main/java/com/facebook/react/touch/OnInterceptTouchEventListener.java
index 6bb2e71b907e10..46ee341d86c6e4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/touch/OnInterceptTouchEventListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/touch/OnInterceptTouchEventListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/touch/ReactHitSlopView.java b/ReactAndroid/src/main/java/com/facebook/react/touch/ReactHitSlopView.java
index 82f7f3d6bb5d2b..296768fbd682d9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/touch/ReactHitSlopView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/touch/ReactHitSlopView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/touch/ReactInterceptingViewGroup.java b/ReactAndroid/src/main/java/com/facebook/react/touch/ReactInterceptingViewGroup.java
index c75c1b017f268f..58063f4dca98d8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/touch/ReactInterceptingViewGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/touch/ReactInterceptingViewGroup.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
index c834c85fd2cd69..7e43515b8fed9d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityDelegateUtil.java
@@ -1,20 +1,16 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 package com.facebook.react.uimanager;
 
-import android.annotation.TargetApi;
 import android.content.Context;
-import android.os.Build;
 import android.support.v4.view.AccessibilityDelegateCompat;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
 import android.view.View;
-import android.view.accessibility.AccessibilityNodeInfo;
 import com.facebook.react.R;
-import com.facebook.react.bridge.ReadableArray;
 import java.util.Locale;
 import javax.annotation.Nullable;
 
@@ -33,36 +29,54 @@ public class AccessibilityDelegateUtil {
    */
 
   public enum AccessibilityRole {
-    NONE(null),
-    BUTTON("android.widget.Button"),
-    LINK("android.widget.ViewGroup"),
-    SEARCH("android.widget.EditText"),
-    IMAGE("android.widget.ImageView"),
-    IMAGEBUTTON("android.widget.ImageView"),
-    KEYBOARDKEY("android.inputmethodservice.Keyboard$Key"),
-    TEXT("android.widget.ViewGroup"),
-    ADJUSTABLE("android.widget.SeekBar"),
-    SUMMARY("android.widget.ViewGroup"),
-    HEADER("android.widget.ViewGroup");
-
-    @Nullable private final String mValue;
-
-    AccessibilityRole(String type) {
-      mValue = type;
-    }
-
-    @Nullable
-    public String getValue() {
-      return mValue;
+    NONE,
+    BUTTON,
+    LINK,
+    SEARCH,
+    IMAGE,
+    IMAGEBUTTON,
+    KEYBOARDKEY,
+    TEXT,
+    ADJUSTABLE,
+    SUMMARY,
+    HEADER;
+
+    public static String getValue(AccessibilityRole role) {
+      switch (role) {
+        case NONE:
+          return null;
+        case BUTTON:
+          return "android.widget.Button";
+        case LINK:
+          return "android.widget.ViewGroup";
+        case SEARCH:
+          return "android.widget.EditText";
+        case IMAGE:
+          return "android.widget.ImageView";
+        case IMAGEBUTTON:
+          return "android.widget.ImageView";
+        case KEYBOARDKEY:
+          return "android.inputmethodservice.Keyboard$Key";
+        case TEXT:
+          return "android.widget.ViewGroup";
+        case ADJUSTABLE:
+          return "android.widget.SeekBar";
+        case SUMMARY:
+          return "android.widget.ViewGroup";
+        case HEADER:
+          return "android.widget.ViewGroup";
+        default:
+          throw new IllegalArgumentException("Invalid accessibility role value: " + role);
+      }
     }
 
-    public static AccessibilityRole fromValue(String value) {
+    public static AccessibilityRole fromValue(@Nullable String value) {
       for (AccessibilityRole role : AccessibilityRole.values()) {
-        if (role.getValue() != null && role.getValue().equals(value)) {
+        if (role.name().equalsIgnoreCase(value)) {
           return role;
         }
       }
-      return AccessibilityRole.NONE;
+      throw new IllegalArgumentException("Invalid accessibility role value: " + value);
     }
   }
 
@@ -71,9 +85,13 @@ private AccessibilityDelegateUtil() {
   }
 
   public static void setDelegate(final View view) {
+    final String accessibilityHint = (String) view.getTag(R.id.accessibility_hint);
+    final AccessibilityRole accessibilityRole = (AccessibilityRole) view.getTag(R.id.accessibility_role);
+
     // if a view already has an accessibility delegate, replacing it could cause problems,
     // so leave it alone.
-    if (!ViewCompat.hasAccessibilityDelegate(view)) {
+    if (!ViewCompat.hasAccessibilityDelegate(view) &&
+      (accessibilityHint != null || accessibilityRole != null)) {
       ViewCompat.setAccessibilityDelegate(
         view,
         new AccessibilityDelegateCompat() {
@@ -81,8 +99,6 @@ public static void setDelegate(final View view) {
           public void onInitializeAccessibilityNodeInfo(
             View host, AccessibilityNodeInfoCompat info) {
             super.onInitializeAccessibilityNodeInfo(host, info);
-            String accessibilityHint = (String) view.getTag(R.id.accessibility_hint);
-            AccessibilityRole accessibilityRole = getAccessibilityRole((String) view.getTag(R.id.accessibility_role));
             setRole(info, accessibilityRole, view.getContext());
             if (!(accessibilityHint == null)) {
               String contentDescription=(String)info.getContentDescription();
@@ -104,8 +120,11 @@ public void onInitializeAccessibilityNodeInfo(
 
   //TODO: Eventually support for other languages on talkback
 
-  public static void setRole(AccessibilityNodeInfoCompat nodeInfo, final AccessibilityRole role, final Context context) {
-    nodeInfo.setClassName(role.getValue());
+  public static void setRole(AccessibilityNodeInfoCompat nodeInfo, AccessibilityRole role, final Context context) {
+    if (role == null) {
+      role = AccessibilityRole.NONE;
+    }
+    nodeInfo.setClassName(AccessibilityRole.getValue(role));
     if (Locale.getDefault().getLanguage().equals(new Locale("en").getLanguage())) {
       if (role.equals(AccessibilityRole.LINK)) {
         nodeInfo.setRoleDescription(context.getString(R.string.link_description));
@@ -127,14 +146,4 @@ public static void setRole(AccessibilityNodeInfoCompat nodeInfo, final Accessibi
       nodeInfo.setClickable(true);
     }
   }
-
-  /**
-   * Method for setting accessibilityRole on view properties.
-   */
-  public static AccessibilityRole getAccessibilityRole(String role) {
-    if (role == null) {
-      return AccessibilityRole.NONE;
-    }
-    return AccessibilityRole.valueOf(role.toUpperCase());
-  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityHelper.java
index a432971279bce1..426c608336f90e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AccessibilityHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AndroidManifest.xml b/ReactAndroid/src/main/java/com/facebook/react/uimanager/AndroidManifest.xml
deleted file mode 100644
index 1b7a37bdb48bbf..00000000000000
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/AndroidManifest.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="com.facebook" >
-
-  <uses-sdk android:minSdkVersion="15"/>
-
-</manifest>
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
index e46baf8aeb9576..705ef71a426af9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "uimanager",
@@ -13,7 +13,6 @@ rn_android_library(
     ),
     provided_deps = [
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
     ],
     visibility = [
         "PUBLIC",
@@ -29,7 +28,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/animation:animation"),
         react_native_target("java/com/facebook/react/bridge:bridge"),
         react_native_target("java/com/facebook/react/common:common"),
-        react_native_target("java/com/facebook/react/common:common"),
+        react_native_target("java/com/facebook/react/config:config"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
         react_native_target("java/com/facebook/react/modules/core:core"),
         react_native_target("java/com/facebook/react/modules/i18nmanager:i18nmanager"),
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
index 13a201b167d005..bd5cc0aadc177a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -12,8 +12,10 @@
 import com.facebook.react.R;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.uimanager.AccessibilityDelegateUtil.AccessibilityRole;
 import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.util.ReactFindViewUtil;
+import java.util.Locale;
 
 import javax.annotation.Nullable;
 
@@ -140,14 +142,7 @@ public void setAccessibilityRole(T view, String accessibilityRole) {
     if (accessibilityRole == null) {
       return;
     }
-    try {
-     AccessibilityDelegateUtil.AccessibilityRole.valueOf(accessibilityRole.toUpperCase());
-    } catch (NullPointerException e) {
-      throw new IllegalArgumentException("Invalid Role " + accessibilityRole + " Passed In");
-    } catch (IllegalArgumentException e) {
-      throw new IllegalArgumentException("Invalid Role " + accessibilityRole + " Passed In");
-    }
-    view.setTag(R.id.accessibility_role, accessibilityRole);
+    view.setTag(R.id.accessibility_role, AccessibilityRole.fromValue(accessibilityRole));
   }
 
   @ReactProp(name = PROP_ACCESSIBILITY_STATES)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java
index 502242591f24ba..62d79ed925dd67 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/FloatUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/FloatUtil.java
index 79930641fbbc2c..c1464e842d6b26 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/FloatUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/FloatUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/GuardedFrameCallback.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/GuardedFrameCallback.java
index abc9d1fb4c67ba..cf39087ecbae9a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/GuardedFrameCallback.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/GuardedFrameCallback.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/IllegalViewOperationException.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/IllegalViewOperationException.java
index 4707a9c143c5b0..8ea4aec8b1d3ec 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/IllegalViewOperationException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/IllegalViewOperationException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/JSTouchDispatcher.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/JSTouchDispatcher.java
index 096a7beb69f384..46ea5edfa9d828 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/JSTouchDispatcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/JSTouchDispatcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/LayoutShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/LayoutShadowNode.java
index 2bbe858f014a2a..1b89228e59d253 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/LayoutShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/LayoutShadowNode.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -75,16 +75,6 @@ public LayoutShadowNode() {
     mTempYogaValue = new MutableYogaValue();
   }
 
-  protected LayoutShadowNode(LayoutShadowNode node) {
-    super(node);
-    mTempYogaValue = new MutableYogaValue(node.mTempYogaValue);
-  }
-
-  @Override
-  protected LayoutShadowNode copy() {
-    return new LayoutShadowNode(this);
-  }
-
   @ReactProp(name = ViewProps.WIDTH)
   public void setWidth(Dynamic width) {
     if (isVirtual()) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/MatrixMathHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/MatrixMathHelper.java
index cbf665a7ed8fd3..8ce6fe2bf86482 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/MatrixMathHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/MatrixMathHelper.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import com.facebook.infer.annotation.Assertions;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/MeasureSpecAssertions.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/MeasureSpecAssertions.java
index 5dd2f36ac7711a..6f457dfef88fe1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/MeasureSpecAssertions.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/MeasureSpecAssertions.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java
index 5d2737e2a2d461..f75da99d825d3b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -409,13 +409,12 @@ public synchronized void manageChildren(
         if (mLayoutAnimationEnabled &&
             mLayoutAnimator.shouldAnimateLayout(viewToRemove) &&
             arrayContains(tagsToDelete, viewToRemove.getId())) {
-          // Display the view in the parent after removal for the duration of the layout animation,
-          // but pretend that it doesn't exist when calling other ViewGroup methods.
-          viewManager.startViewTransition(viewToManage, viewToRemove);
+          // The view will be removed and dropped by the 'delete' layout animation
+          // instead, so do nothing
+        } else {
+          viewManager.removeViewAt(viewToManage, indexToRemove);
         }
 
-        viewManager.removeViewAt(viewToManage, indexToRemove);
-
         lastIndexToRemove = indexToRemove;
       }
     }
@@ -460,9 +459,7 @@ public synchronized void manageChildren(
           mLayoutAnimator.deleteView(viewToDestroy, new LayoutAnimationListener() {
             @Override
             public void onAnimationEnd() {
-              // Already removed from the ViewGroup, we can just end the transition here to
-              // release the child.
-              viewManager.endViewTransition(viewToManage, viewToDestroy);
+              viewManager.removeView(viewToManage, viewToDestroy);
               dropView(viewToDestroy);
             }
           });
@@ -546,10 +543,12 @@ protected synchronized final void addRootViewGroup(
       ViewGroup view,
       ThemedReactContext themedContext) {
     if (view.getId() != View.NO_ID) {
-      throw new IllegalViewOperationException(
-          "Trying to add a root view with an explicit id already set. React Native uses " +
-          "the id field to track react tags and will overwrite this field. If that is fine, " +
-          "explicitly overwrite the id field to View.NO_ID before calling addRootView.");
+      FLog.e(
+        TAG,
+        "Trying to add a root view with an explicit id (" + view.getId() + ") already " +
+        "set. React Native uses the id field to track react tags and will overwrite this field. " +
+        "If that is fine, explicitly overwrite the id field to View.NO_ID before calling " +
+        "addRootView.");
     }
 
     mTagsToViews.put(tag, view);
@@ -563,6 +562,11 @@ protected synchronized final void addRootViewGroup(
    */
   protected synchronized void dropView(View view) {
     UiThreadUtil.assertOnUiThread();
+    if (mTagsToViewManagers.get(view.getId()) == null) {
+      // This view has already been dropped (likely due to a threading issue caused by async js
+      // execution). Ignore this drop operation.
+      return;
+    }
     if (!mRootTags.get(view.getId())) {
       // For non-root views we notify viewmanager with {@link ViewManager#onDropInstance}
       resolveViewManager(view.getId()).onDropViewInstance(view);
@@ -573,7 +577,9 @@ protected synchronized void dropView(View view) {
       ViewGroupManager viewGroupManager = (ViewGroupManager) viewManager;
       for (int i = viewGroupManager.getChildCount(viewGroup) - 1; i >= 0; i--) {
         View child = viewGroupManager.getChildAt(viewGroup, i);
-        if (mTagsToViews.get(child.getId()) != null) {
+        if (child == null) {
+            FLog.e(TAG, "Unable to drop null child view");
+        } else if (mTagsToViews.get(child.getId()) != null) {
           dropView(child);
         }
       }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyOptimizer.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyOptimizer.java
index b6562779875f19..084006fe4651cf 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyOptimizer.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyOptimizer.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NoSuchNativeViewException.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NoSuchNativeViewException.java
index 7fdf9d8943533c..22e13d6717b388 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/NoSuchNativeViewException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/NoSuchNativeViewException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/OnLayoutEvent.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/OnLayoutEvent.java
index 47de61c9a6d7fa..e3d2b3f6851d16 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/OnLayoutEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/OnLayoutEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/PixelUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/PixelUtil.java
index 4f69c62e50059e..ad195d14d85b5f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/PixelUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/PixelUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -31,6 +31,13 @@ public static float toPixelFromDIP(double value) {
     return toPixelFromDIP((float) value);
   }
 
+  /**
+   * Convert from PX to SP
+   */
+  public static float toSPFromPixel(float value) {
+    return value / DisplayMetricsHolder.getScreenDisplayMetrics().scaledDensity;
+  }
+
   /**
    * Convert from SP to PX
    */
@@ -55,4 +62,11 @@ public static float toDIPFromPixel(float value) {
     return value / DisplayMetricsHolder.getWindowDisplayMetrics().density;
   }
 
+  /**
+   * @return {@link float} that represents the density of the display metrics for device screen.
+   */
+  public static float getDisplayMetricDensity() {
+    return DisplayMetricsHolder.getScreenDisplayMetrics().density;
+  }
+
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/PointerEvents.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/PointerEvents.java
index da4f248fa76027..0be5d8f6ee3ed4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/PointerEvents.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/PointerEvents.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroup.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroup.java
index a6b0f51efcbe73..04dd014e7c4fb7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroup.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroupHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroupHelper.java
index 009cab688e4ae4..c5d9ab6a51a697 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroupHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroupHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundView.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundView.java
index 4f2f27976f0a45..5c421b481abd67 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundViewGroup.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundViewGroup.java
index e78f67bc9a230d..eb6c3e53de652a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundViewGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactCompoundViewGroup.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactInvalidPropertyException.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactInvalidPropertyException.java
index 4ac48ee9d9579d..695225b550e3c6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactInvalidPropertyException.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactInvalidPropertyException.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactPointerEventsView.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactPointerEventsView.java
index 334b1949079749..477ef86e36d143 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactPointerEventsView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactPointerEventsView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactRootViewTagGenerator.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactRootViewTagGenerator.java
index 47d1daa54a0699..b3890dc319ad97 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactRootViewTagGenerator.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactRootViewTagGenerator.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNode.java
index ac5780df2ec9de..885ab3dd2b3f92 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -68,17 +68,6 @@ public interface ReactShadowNode<T extends ReactShadowNode> {
    */
   boolean isYogaLeafNode();
 
-  /**
-   * @return a mutable copy of the {@link ReactShadowNode}
-   */
-  T mutableCopy(long instanceHandle);
-
-  T mutableCopyWithNewProps(long instanceHandle, @Nullable ReactStylesDiffMap newProps);
-
-  T mutableCopyWithNewChildren(long instanceHandle);
-
-  T mutableCopyWithNewChildrenAndProps(long instanceHandle, @Nullable ReactStylesDiffMap newProps);
-
   String getViewClass();
 
   boolean hasUpdates();
@@ -105,8 +94,6 @@ public interface ReactShadowNode<T extends ReactShadowNode> {
 
   void removeAndDisposeAllChildren();
 
-  @Nullable ReactStylesDiffMap getNewProps();
-
   /**
    * This method will be called by {@link UIManagerModule} once per batch, before calculating
    * layout. Will be only called for nodes that are marked as updated with {@link #markUpdated()} or
@@ -359,35 +346,4 @@ public interface ReactShadowNode<T extends ReactShadowNode> {
   boolean isMeasureDefined();
 
   void dispose();
-
-  /**
-   * @return an immutable {@link List<ReactShadowNode>} containing the children of this
-   * {@link ReactShadowNode}.
-   */
-  List<ReactShadowNode> getChildrenList();
-
-  /**
-   * @return the {@link ReactShadowNode} that was used during the cloning mechanism to create
-   * this {@link ReactShadowNode} or null if this object was not created using a clone operation.
-   */
-  @Nullable ReactShadowNode getOriginalReactShadowNode();
-
-  void setOriginalReactShadowNode(@Nullable ReactShadowNode node);
-
-  long getInstanceHandle();
-
-  void setInstanceHandle(long instanceHandle);
-
-  /**
-   * Mark this {@link ReactShadowNode} as sealed. This means that the node was already committed
-   * and it should not be updated anymore.
-   */
-  void markAsSealed();
-
-  /**
-   * @return a {@link boolean} that represents if the {@link ReactShadowNode} is sealed.
-   */
-  boolean isSealed();
-
-  void updateScreenLayout(ReactShadowNode prevNode);
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
index 706e005d0eee43..7fa72be0b1c8f3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
@@ -1,21 +1,13 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 package com.facebook.react.uimanager;
 
-import static java.lang.System.arraycopy;
-
-import com.facebook.common.logging.FLog;
-import com.facebook.debug.holder.PrinterHolder;
-import com.facebook.debug.tags.ReactDebugOverlayTags;
 import com.facebook.infer.annotation.Assertions;
-import com.facebook.react.common.build.ReactBuildConfig;
 import com.facebook.react.uimanager.annotations.ReactPropertyHolder;
-import com.facebook.systrace.Systrace;
-import com.facebook.systrace.SystraceMessage;
 import com.facebook.yoga.YogaAlign;
 import com.facebook.yoga.YogaBaselineFunction;
 import com.facebook.yoga.YogaConfig;
@@ -27,15 +19,12 @@
 import com.facebook.yoga.YogaJustify;
 import com.facebook.yoga.YogaMeasureFunction;
 import com.facebook.yoga.YogaNode;
-import com.facebook.yoga.YogaNodeCloneFunction;
 import com.facebook.yoga.YogaOverflow;
 import com.facebook.yoga.YogaPositionType;
 import com.facebook.yoga.YogaValue;
 import com.facebook.yoga.YogaWrap;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
 import javax.annotation.Nullable;
 
 /**
@@ -64,41 +53,10 @@
 @ReactPropertyHolder
 public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl> {
 
-  private static final boolean DEBUG = ReactBuildConfig.DEBUG || PrinterHolder.getPrinter().shouldDisplayLogMessage(ReactDebugOverlayTags.FABRIC_UI_MANAGER);
-  private static final String TAG = ReactShadowNodeImpl.class.getSimpleName();
   private static final YogaConfig sYogaConfig;
+
   static {
     sYogaConfig = ReactYogaConfigProvider.get();
-    sYogaConfig.setOnCloneNode(new YogaNodeCloneFunction() {
-      @Override
-      public YogaNode cloneNode(YogaNode oldYogaNode,
-          YogaNode parent,
-          int childIndex) {
-        SystraceMessage.beginSection(
-          Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-          "FabricReconciler.YogaNodeCloneFunction")
-          .flush();
-        try {
-          ReactShadowNodeImpl parentReactShadowNode = (ReactShadowNodeImpl) parent.getData();
-          Assertions.assertNotNull(parentReactShadowNode);
-          ReactShadowNodeImpl oldReactShadowNode = (ReactShadowNodeImpl) oldYogaNode.getData();
-          Assertions.assertNotNull(oldReactShadowNode);
-
-          if (DEBUG) {
-            FLog.d(
-              TAG,
-              "YogaNode started cloning: oldYogaNode: " + oldReactShadowNode + " - parent: "
-                + parentReactShadowNode + " index: " + childIndex);
-          }
-
-          ReactShadowNodeImpl newNode = oldReactShadowNode.mutableCopy(oldReactShadowNode.getInstanceHandle());
-          parentReactShadowNode.replaceChild(newNode, childIndex);
-          return newNode.mYogaNode;
-        } finally{
-          Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
-        }
-      }
-    });
   }
 
   private int mReactTag;
@@ -123,12 +81,6 @@ public YogaNode cloneNode(YogaNode oldYogaNode,
   private final float[] mPadding = new float[Spacing.ALL + 1];
   private final boolean[] mPaddingIsPercent = new boolean[Spacing.ALL + 1];
   private YogaNode mYogaNode;
-  private int mGenerationDebugInformation = 1;
-  private ReactShadowNode mOriginalReactShadowNode = null;
-
-  private @Nullable ReactStylesDiffMap mNewProps;
-  private long mInstanceHandle;
-  private boolean mIsSealed = false;
 
   public ReactShadowNodeImpl() {
     mDefaultPadding = new Spacing(0);
@@ -142,120 +94,6 @@ public ReactShadowNodeImpl() {
     }
   }
 
-  protected ReactShadowNodeImpl(ReactShadowNodeImpl original) {
-    mReactTag = original.mReactTag;
-    mRootTag = original.mRootTag;
-    mViewClassName = original.mViewClassName;
-    mThemedContext = original.mThemedContext;
-    mShouldNotifyOnLayout = original.mShouldNotifyOnLayout;
-    mIsLayoutOnly = original.mIsLayoutOnly;
-    mNativeParent = original.mNativeParent;
-    mDefaultPadding = new Spacing(original.mDefaultPadding);
-    // Cloned nodes should be always updated.
-    mNodeUpdated = true;
-    // "cached" screen coordinates are not cloned because FabricJS not always clone the last
-    // ReactShadowNode that was rendered in the screen.
-    mScreenX = 0;
-    mScreenY = 0;
-    mScreenWidth = 0;
-    mScreenHeight = 0;
-    mGenerationDebugInformation = original.mGenerationDebugInformation + 1;
-    arraycopy(original.mPadding, 0, mPadding, 0, original.mPadding.length);
-    arraycopy(original.mPaddingIsPercent, 0, mPaddingIsPercent, 0, original.mPaddingIsPercent.length);
-    mNewProps = null;
-    mParent = null;
-    mOriginalReactShadowNode = original;
-    mIsSealed = false;
-  }
-
-  private void replaceChild(ReactShadowNodeImpl newNode, int childIndex) {
-    mChildren.remove(childIndex);
-    mChildren.add(childIndex, newNode);
-    newNode.mParent = this;
-  }
-
-  /**
-   * @return a copy of this object (no including copy of its children or the underlying yogaNode).
-   */
-  protected ReactShadowNodeImpl copy() {
-    return new ReactShadowNodeImpl(this);
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopy(long instanceHandle) {
-    ReactShadowNodeImpl copy = copy();
-    Assertions.assertCondition(
-        getClass() == copy.getClass(),
-        "Copied shadow node must use the same class");
-    copy.mInstanceHandle = instanceHandle;
-    if (mYogaNode != null) {
-      copy.mYogaNode = mYogaNode.clone();
-      copy.mYogaNode.setData(copy);
-    } else {
-      // Virtual ReactShadowNode do not have a YogaNode associated
-      copy.mYogaNode = null;
-    }
-    copy.mTotalNativeChildren = mTotalNativeChildren;
-    copy.mNativeChildren = copyChildren(mNativeChildren);
-    copy.mChildren = copyChildren(mChildren);
-
-    return copy;
-  }
-
-  @Nullable
-  private ArrayList<ReactShadowNodeImpl> copyChildren(@Nullable List<ReactShadowNodeImpl> list){
-    ArrayList<ReactShadowNodeImpl> result = list == null ? null : new ArrayList<>(list);
-    if (result != null) {
-      for (ReactShadowNodeImpl child : result) {
-        child.mParent = null;
-      }
-    }
-    return result;
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopyWithNewChildren(long instanceHandle) {
-    ReactShadowNodeImpl copy = copy();
-    copy.mInstanceHandle = instanceHandle;
-    Assertions.assertCondition(
-        getClass() == copy.getClass(),
-        "Copied shadow node must use the same class");
-    if (mYogaNode != null) {
-      copy.mYogaNode = mYogaNode.cloneWithNewChildren();
-      copy.mYogaNode.setData(copy);
-    } else {
-      // Virtual ReactShadowNode do not have a YogaNode associated
-      copy.mYogaNode = null;
-    }
-    copy.mNativeChildren = null;
-    copy.mChildren = null;
-    copy.mTotalNativeChildren = 0;
-    return copy;
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopyWithNewProps(long instanceHandle,
-      @Nullable ReactStylesDiffMap newProps) {
-    ReactShadowNodeImpl copy = mutableCopy(instanceHandle);
-    if (newProps != null) {
-      copy.updateProperties(newProps);
-      copy.mNewProps = newProps;
-    }
-    return copy;
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopyWithNewChildrenAndProps(long instanceHandle,
-      @Nullable ReactStylesDiffMap newProps) {
-    ReactShadowNodeImpl copy = mutableCopyWithNewChildren(instanceHandle);
-    if (newProps != null) {
-      copy.updateProperties(newProps);
-      copy.mNewProps = newProps;
-    }
-    return copy;
-  }
-
-
   /**
    * Nodes that return {@code true} will be treated as "virtual" nodes. That is, nodes that are not
    * mapped into native views (e.g. nested text node). By default this method returns {@code false}.
@@ -299,7 +137,6 @@ public final boolean hasUpdates() {
 
   @Override
   public final void markUpdateSeen() {
-    assertNotSealed();
     mNodeUpdated = false;
     if (hasNewLayout()) {
       markLayoutSeen();
@@ -325,7 +162,6 @@ public final boolean hasUnseenUpdates() {
 
   @Override
   public void dirty() {
-    assertNotSealed();
     if (!isVirtual()) {
       mYogaNode.dirty();
     }
@@ -338,7 +174,6 @@ public final boolean isDirty() {
 
   @Override
   public void addChildAt(ReactShadowNodeImpl child, int i) {
-    assertNotSealed();
     if (mChildren == null) {
       mChildren = new ArrayList<>(4);
     }
@@ -370,7 +205,6 @@ public void addChildAt(ReactShadowNodeImpl child, int i) {
 
   @Override
   public ReactShadowNodeImpl removeChildAt(int i) {
-    assertNotSealed();
     if (mChildren == null) {
       throw new ArrayIndexOutOfBoundsException(
         "Index " + i + " out of bounds: node has no children");
@@ -464,12 +298,6 @@ public void onAfterUpdateTransaction() {
     // no-op
   }
 
-  @Override
-  @Nullable
-  public ReactStylesDiffMap getNewProps() {
-    return mNewProps;
-  }
-
   /**
    * Called after layout step at the end of the UI batch from {@link UIManagerModule}. May be used
    * to enqueue additional ui operations for the native view. Will only be called on nodes marked as
@@ -543,7 +371,6 @@ public final int getReactTag() {
 
   @Override
   public void setReactTag(int reactTag) {
-    assertNotSealed();
     mReactTag = reactTag;
   }
 
@@ -555,13 +382,11 @@ public final int getRootTag() {
 
   @Override
   public final void setRootTag(int rootTag) {
-    assertNotSealed();
     mRootTag = rootTag;
   }
 
   @Override
   public final void setViewClassName(String viewClassName) {
-    assertNotSealed();
     mViewClassName = viewClassName;
   }
 
@@ -603,7 +428,6 @@ public final boolean hasNewLayout() {
 
   @Override
   public final void markLayoutSeen() {
-    assertNotSealed();
     if (mYogaNode != null) {
       mYogaNode.markLayoutSeen();
     }
@@ -615,7 +439,6 @@ public final void markLayoutSeen() {
    */
   @Override
   public final void addNativeChildAt(ReactShadowNodeImpl child, int nativeIndex) {
-    assertNotSealed();
     Assertions.assertCondition(!mIsLayoutOnly);
     Assertions.assertCondition(!child.mIsLayoutOnly);
 
@@ -667,7 +490,6 @@ public final int indexOfNativeChild(ReactShadowNodeImpl nativeChild) {
    */
   @Override
   public final void setIsLayoutOnly(boolean isLayoutOnly) {
-    assertNotSealed();
     Assertions.assertCondition(getParent() == null, "Must remove from no opt parent first");
     Assertions.assertCondition(mNativeParent == null, "Must remove from native parent first");
     Assertions.assertCondition(getNativeChildCount() == 0, "Must remove all native children first");
@@ -816,7 +638,6 @@ public final YogaDirection getLayoutDirection() {
 
   @Override
   public void setLayoutDirection(YogaDirection direction) {
-    assertNotSealed();
     mYogaNode.setDirection(direction);
   }
 
@@ -827,43 +648,36 @@ public final YogaValue getStyleWidth() {
 
   @Override
   public void setStyleWidth(float widthPx) {
-    assertNotSealed();
     mYogaNode.setWidth(widthPx);
   }
 
   @Override
   public void setStyleWidthPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setWidthPercent(percent);
   }
 
   @Override
   public void setStyleWidthAuto() {
-    assertNotSealed();
     mYogaNode.setWidthAuto();
   }
 
   @Override
   public void setStyleMinWidth(float widthPx) {
-    assertNotSealed();
     mYogaNode.setMinWidth(widthPx);
   }
 
   @Override
   public void setStyleMinWidthPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setMinWidthPercent(percent);
   }
 
   @Override
   public void setStyleMaxWidth(float widthPx) {
-    assertNotSealed();
     mYogaNode.setMaxWidth(widthPx);
   }
 
   @Override
   public void setStyleMaxWidthPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setMaxWidthPercent(percent);
   }
 
@@ -874,151 +688,126 @@ public final YogaValue getStyleHeight() {
 
   @Override
   public void setStyleHeight(float heightPx) {
-    assertNotSealed();
     mYogaNode.setHeight(heightPx);
   }
 
   @Override
   public void setStyleHeightPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setHeightPercent(percent);
   }
 
   @Override
   public void setStyleHeightAuto() {
-    assertNotSealed();
     mYogaNode.setHeightAuto();
   }
 
   @Override
   public void setStyleMinHeight(float widthPx) {
-    assertNotSealed();
     mYogaNode.setMinHeight(widthPx);
   }
 
   @Override
   public void setStyleMinHeightPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setMinHeightPercent(percent);
   }
 
   @Override
   public void setStyleMaxHeight(float widthPx) {
-    assertNotSealed();
     mYogaNode.setMaxHeight(widthPx);
   }
 
   @Override
   public void setStyleMaxHeightPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setMaxHeightPercent(percent);
   }
 
   @Override
   public void setFlex(float flex) {
-    assertNotSealed();
     mYogaNode.setFlex(flex);
   }
 
   @Override
   public void setFlexGrow(float flexGrow) {
-    assertNotSealed();
     mYogaNode.setFlexGrow(flexGrow);
   }
 
   @Override
   public void setFlexShrink(float flexShrink) {
-    assertNotSealed();
     mYogaNode.setFlexShrink(flexShrink);
   }
 
   @Override
   public void setFlexBasis(float flexBasis) {
-    assertNotSealed();
     mYogaNode.setFlexBasis(flexBasis);
   }
 
   @Override
   public void setFlexBasisAuto() {
-    assertNotSealed();
     mYogaNode.setFlexBasisAuto();
   }
 
   @Override
   public void setFlexBasisPercent(float percent) {
-    assertNotSealed();
     mYogaNode.setFlexBasisPercent(percent);
   }
 
   @Override
   public void setStyleAspectRatio(float aspectRatio) {
-    assertNotSealed();
     mYogaNode.setAspectRatio(aspectRatio);
   }
 
   @Override
   public void setFlexDirection(YogaFlexDirection flexDirection) {
-    assertNotSealed();
     mYogaNode.setFlexDirection(flexDirection);
   }
 
   @Override
   public void setFlexWrap(YogaWrap wrap) {
-    assertNotSealed();
     mYogaNode.setWrap(wrap);
   }
 
   @Override
   public void setAlignSelf(YogaAlign alignSelf) {
-    assertNotSealed();
     mYogaNode.setAlignSelf(alignSelf);
   }
 
   @Override
   public void setAlignItems(YogaAlign alignItems) {
-    assertNotSealed();
     mYogaNode.setAlignItems(alignItems);
   }
 
   @Override
   public void setAlignContent(YogaAlign alignContent) {
-    assertNotSealed();
     mYogaNode.setAlignContent(alignContent);
   }
 
   @Override
   public void setJustifyContent(YogaJustify justifyContent) {
-    assertNotSealed();
     mYogaNode.setJustifyContent(justifyContent);
   }
 
   @Override
   public void setOverflow(YogaOverflow overflow) {
-    assertNotSealed();
     mYogaNode.setOverflow(overflow);
   }
 
   @Override
   public void setDisplay(YogaDisplay display) {
-    assertNotSealed();
     mYogaNode.setDisplay(display);
   }
 
   @Override
   public void setMargin(int spacingType, float margin) {
-    assertNotSealed();
     mYogaNode.setMargin(YogaEdge.fromInt(spacingType), margin);
   }
 
   @Override
   public void setMarginPercent(int spacingType, float percent) {
-    assertNotSealed();
     mYogaNode.setMarginPercent(YogaEdge.fromInt(spacingType), percent);
   }
 
   @Override
   public void setMarginAuto(int spacingType) {
-    assertNotSealed();
     mYogaNode.setMarginAuto(YogaEdge.fromInt(spacingType));
   }
 
@@ -1034,14 +823,12 @@ public final YogaValue getStylePadding(int spacingType) {
 
   @Override
   public void setDefaultPadding(int spacingType, float padding) {
-    assertNotSealed();
     mDefaultPadding.set(spacingType, padding);
     updatePadding();
   }
 
   @Override
   public void setPadding(int spacingType, float padding) {
-    assertNotSealed();
     mPadding[spacingType] = padding;
     mPaddingIsPercent[spacingType] = false;
     updatePadding();
@@ -1049,14 +836,12 @@ public void setPadding(int spacingType, float padding) {
 
   @Override
   public void setPaddingPercent(int spacingType, float percent) {
-    assertNotSealed();
     mPadding[spacingType] = percent;
     mPaddingIsPercent[spacingType] = !YogaConstants.isUndefined(percent);
     updatePadding();
   }
 
   private void updatePadding() {
-    assertNotSealed();
     for (int spacingType = Spacing.LEFT; spacingType <= Spacing.ALL; spacingType++) {
       if (spacingType == Spacing.LEFT
           || spacingType == Spacing.RIGHT
@@ -1092,43 +877,36 @@ private void updatePadding() {
 
   @Override
   public void setBorder(int spacingType, float borderWidth) {
-    assertNotSealed();
     mYogaNode.setBorder(YogaEdge.fromInt(spacingType), borderWidth);
   }
 
   @Override
   public void setPosition(int spacingType, float position) {
-    assertNotSealed();
     mYogaNode.setPosition(YogaEdge.fromInt(spacingType), position);
   }
 
   @Override
   public void setPositionPercent(int spacingType, float percent) {
-    assertNotSealed();
     mYogaNode.setPositionPercent(YogaEdge.fromInt(spacingType), percent);
   }
 
   @Override
   public void setPositionType(YogaPositionType positionType) {
-    assertNotSealed();
     mYogaNode.setPositionType(positionType);
   }
 
   @Override
   public void setShouldNotifyOnLayout(boolean shouldNotifyOnLayout) {
-    assertNotSealed();
     mShouldNotifyOnLayout = shouldNotifyOnLayout;
   }
 
   @Override
   public void setBaselineFunction(YogaBaselineFunction baselineFunction) {
-    assertNotSealed();
     mYogaNode.setBaselineFunction(baselineFunction);
   }
 
   @Override
   public void setMeasureFunction(YogaMeasureFunction measureFunction) {
-    assertNotSealed();
     mYogaNode.setMeasureFunction(measureFunction);
   }
 
@@ -1151,7 +929,7 @@ private void getHierarchyInfoWithIndentation(StringBuilder result, int level) {
     }
 
     result.append("<").append(getClass().getSimpleName()).append(" view='").append(getViewClass())
-      .append("' tag=").append(getReactTag()).append(" gen=").append(mGenerationDebugInformation);
+      .append("' tag=").append(getReactTag());
     if (mYogaNode != null) {
       result.append(" layout='x:").append(getScreenX())
         .append(" y:").append(getScreenY()).append(" w:").append(getLayoutWidth()).append(" h:")
@@ -1178,54 +956,4 @@ public void dispose() {
     }
   }
 
-  @Nullable
-  @Override
-  public List<ReactShadowNode> getChildrenList() {
-    return mChildren == null ? null : Collections.<ReactShadowNode>unmodifiableList(mChildren);
-  }
-
-  @Override
-  public ReactShadowNode getOriginalReactShadowNode() {
-    return mOriginalReactShadowNode;
-  }
-
-  @Override
-  public void setOriginalReactShadowNode(ReactShadowNode node) {
-    mOriginalReactShadowNode = node;
-  }
-
-  @Override
-  public long getInstanceHandle() {
-    return mInstanceHandle;
-  }
-
-  @Override
-  public void setInstanceHandle(long instanceHandle) {
-    assertNotSealed();
-    mInstanceHandle = instanceHandle;
-  }
-
-  @Override
-  public void markAsSealed() {
-    mIsSealed = true;
-  }
-
-  @Override
-  public boolean isSealed() {
-    return mIsSealed;
-  }
-
-  private void assertNotSealed() {
-    if (mIsSealed) {
-      throw new IllegalStateException("Can not modify sealed node " + toString());
-    }
-  }
-
-  @Override
-  public void updateScreenLayout(ReactShadowNode prevNode) {
-    mScreenHeight = prevNode.getScreenHeight();
-    mScreenWidth = prevNode.getScreenWidth();
-    mScreenX = prevNode.getScreenX();
-    mScreenY = prevNode.getScreenY();
-  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactStylesDiffMap.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactStylesDiffMap.java
index d57504f4bb1002..733545bcf418d4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactStylesDiffMap.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactStylesDiffMap.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactYogaConfigProvider.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactYogaConfigProvider.java
index 3e2b109765d441..4facdbf2a57838 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactYogaConfigProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactYogaConfigProvider.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import com.facebook.yoga.YogaConfig;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactZIndexedViewGroup.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactZIndexedViewGroup.java
index a170ed75fb9030..fcd7adeea1949a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactZIndexedViewGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactZIndexedViewGroup.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootView.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootView.java
index 1ce0316f9b9966..a74ab4929274b8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewManager.java
index cc6ebae5366dc3..d97def825b99b4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewUtil.java
index 98727a39a8fdbe..7f1e023eb990c7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/RootViewUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ShadowNodeRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ShadowNodeRegistry.java
index bc68ab32607933..4ce41a0bb8d055 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ShadowNodeRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ShadowNodeRegistry.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,6 +9,7 @@
 
 import android.util.SparseArray;
 import android.util.SparseBooleanArray;
+import android.view.View;
 import com.facebook.react.common.SingleThreadAsserter;
 
 /**
@@ -36,6 +37,11 @@ public void addRootNode(ReactShadowNode node) {
 
   public void removeRootNode(int tag) {
     mThreadAsserter.assertNow();
+    if (tag == View.NO_ID) {
+      // This root node has already been removed (likely due to a threading issue caused by async js
+      // execution). Ignore this root removal.
+      return;
+    }
     if (!mRootTags.get(tag)) {
       throw new IllegalViewOperationException(
           "View with tag " + tag + " is not registered as a root view");
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/SimpleViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/SimpleViewManager.java
index 9430ca7a62cd5b..fd310c134e7825 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/SimpleViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/SimpleViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/Spacing.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/Spacing.java
index e386db4db66420..899139e5103952 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/Spacing.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/Spacing.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ThemedReactContext.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ThemedReactContext.java
index 69dec9309e5c53..e061c11345bf35 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ThemedReactContext.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ThemedReactContext.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/TouchTargetHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/TouchTargetHelper.java
index fc8c4cb1476d3e..cee8c4ad7c0079 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/TouchTargetHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/TouchTargetHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -177,7 +177,7 @@ private static boolean isTransformedTouchPointInView(
     if (child instanceof ReactHitSlopView && ((ReactHitSlopView) child).getHitSlopRect() != null) {
       Rect hitSlopRect = ((ReactHitSlopView) child).getHitSlopRect();
       if ((localX >= -hitSlopRect.left && localX < (child.getRight() - child.getLeft()) + hitSlopRect.right)
-          && (localY >= -hitSlopRect.top && localY < (child.getBottom() - child.getTop()) + hitSlopRect.bottom)) {
+        && (localY >= -hitSlopRect.top && localY < (child.getBottom() - child.getTop()) + hitSlopRect.bottom)) {
         outLocalPoint.set(localX, localY);
         return true;
       }
@@ -185,7 +185,7 @@ private static boolean isTransformedTouchPointInView(
       return false;
     } else {
       if ((localX >= 0 && localX < (child.getRight() - child.getLeft()))
-          && (localY >= 0 && localY < (child.getBottom() - child.getTop()))) {
+        && (localY >= 0 && localY < (child.getBottom() - child.getTop()))) {
         outLocalPoint.set(localX, localY);
         return true;
       }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/TransformHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/TransformHelper.java
index 52895d4b7c4363..0dd0e2d276eed1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/TransformHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/TransformHelper.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import com.facebook.react.bridge.JSApplicationIllegalArgumentException;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.java
index 86678d897b6b7a..619c793c1259a5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIBlock.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import android.view.View;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementation.java
index 14bae9081238b7..fd3448e8661020 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementation.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -709,7 +709,7 @@ protected void updateViewHierarchy() {
           }
 
           if (mLayoutUpdateListener != null) {
-            mLayoutUpdateListener.onLayoutUpdated(cssRoot);
+            mOperationsQueue.enqueueLayoutUpdateFinished(cssRoot, mLayoutUpdateListener);
           }
         }
       }
@@ -822,14 +822,6 @@ public void sendAccessibilityEvent(int tag, int eventType) {
     mOperationsQueue.enqueueSendAccessibilityEvent(tag, eventType);
   }
 
-  public void performAccessibilityAction(int tag, int action) {
-    mOperationsQueue.enqueuePerformAccessibilityAction(tag, action);
-  }
-
-  public void announceForAccessibility(int tag, String announcement) {
-    mOperationsQueue.enqueueAnnounceForAccessibility(tag, announcement);
-  }
-
   public void onHostResume() {
     mOperationsQueue.resumeFrameCallback();
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementationProvider.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementationProvider.java
new file mode 100644
index 00000000000000..379bf971619ce7
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIImplementationProvider.java
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+package com.facebook.react.uimanager;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.uimanager.events.EventDispatcher;
+import java.util.List;
+
+/**
+ * Provides UIImplementation to use in {@link UIManagerModule}.
+ */
+@Deprecated
+public class UIImplementationProvider {
+
+  public UIImplementation createUIImplementation(
+      ReactApplicationContext reactContext,
+      UIManagerModule.ViewManagerResolver viewManagerResolver,
+      EventDispatcher eventDispatcher,
+      int minTimeLeftInFrameForNonBatchedOperationMs) {
+    return new UIImplementation(
+        reactContext,
+        viewManagerResolver,
+        eventDispatcher,
+        minTimeLeftInFrameForNonBatchedOperationMs);
+  }
+
+  public UIImplementation createUIImplementation(
+      ReactApplicationContext reactContext,
+      List<ViewManager> viewManagerList,
+      EventDispatcher eventDispatcher,
+      int minTimeLeftInFrameForNonBatchedOperationMs) {
+    return new UIImplementation(
+        reactContext,
+        viewManagerList,
+        eventDispatcher,
+        minTimeLeftInFrameForNonBatchedOperationMs);
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
index fa2ac80a572a9f..6c4219e1e6e150 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerHelper.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import static com.facebook.react.uimanager.common.UIManagerType.FABRIC;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java
index 99bdd90d0a73c7..bd2a3355522e0c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModule.java
@@ -1,10 +1,9 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.uimanager;
 
 import static com.facebook.react.bridge.ReactMarkerConstants.CREATE_UI_MANAGER_MODULE_CONSTANTS_END;
@@ -15,6 +14,7 @@
 import android.content.Context;
 import android.content.res.Configuration;
 import android.media.AudioManager;
+import android.util.ArrayMap;
 import com.facebook.common.logging.FLog;
 import com.facebook.debug.holder.PrinterHolder;
 import com.facebook.debug.tags.ReactDebugOverlayTags;
@@ -44,52 +44,52 @@
 import com.facebook.systrace.Systrace;
 import com.facebook.systrace.SystraceMessage;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import javax.annotation.Nullable;
 
 /**
- * <p>Native module to allow JS to create and update native Views.</p>
+ * Native module to allow JS to create and update native Views.
  *
  * <p>
+ *
  * <h2>== Transactional Requirement ==</h2>
+ *
  * A requirement of this class is to make sure that transactional UI updates occur all at once,
  * meaning that no intermediate state is ever rendered to the screen. For example, if a JS
  * application update changes the background of View A to blue and the width of View B to 100, both
  * need to appear at once. Practically, this means that all UI update code related to a single
  * transaction must be executed as a single code block on the UI thread. Executing as multiple code
  * blocks could allow the platform UI system to interrupt and render a partial UI state.
- * </p>
  *
  * <p>To facilitate this, this module enqueues operations that are then applied to native view
  * hierarchy through {@link NativeViewHierarchyManager} at the end of each transaction.
  *
  * <p>
+ *
  * <h2>== CSSNodes ==</h2>
- * In order to allow layout and measurement to occur on a non-UI thread, this module also
- * operates on intermediate CSSNodeDEPRECATED objects that correspond to a native view. These CSSNodeDEPRECATED are able
- * to calculate layout according to their styling rules, and then the resulting x/y/width/height of
- * that layout is scheduled as an operation that will be applied to native view hierarchy at the end
- * of current batch.
- * </p>
  *
- * TODO(5241856): Investigate memory usage of creating many small objects in UIManageModule and
- *                consider implementing a pool
- * TODO(5483063): Don't dispatch the view hierarchy at the end of a batch if no UI changes occurred
+ * In order to allow layout and measurement to occur on a non-UI thread, this module also operates
+ * on intermediate CSSNodeDEPRECATED objects that correspond to a native view. These
+ * CSSNodeDEPRECATED are able to calculate layout according to their styling rules, and then the
+ * resulting x/y/width/height of that layout is scheduled as an operation that will be applied to
+ * native view hierarchy at the end of current batch. TODO(5241856): Investigate memory usage of
+ * creating many small objects in UIManageModule and consider implementing a pool TODO(5483063):
+ * Don't dispatch the view hierarchy at the end of a batch if no UI changes occurred
  */
 @ReactModule(name = UIManagerModule.NAME)
-public class UIManagerModule extends ReactContextBaseJavaModule implements
-    OnBatchCompleteListener, LifecycleEventListener, UIManager {
+public class UIManagerModule extends ReactContextBaseJavaModule
+    implements OnBatchCompleteListener, LifecycleEventListener, UIManager {
 
-  /**
-   * Enables lazy discovery of a specific {@link ViewManager} by its name.
-   */
+  /** Enables lazy discovery of a specific {@link ViewManager} by its name. */
   public interface ViewManagerResolver {
     /**
-     * {@class UIManagerModule} class uses this method to get a ViewManager by its name.
-     * This is the same name that comes from JS by {@code UIManager.ViewManagerName} call.
+     * {@class UIManagerModule} class uses this method to get a ViewManager by its name. This is the
+     * same name that comes from JS by {@code UIManager.ViewManagerName} call.
      */
-    @Nullable ViewManager getViewManager(String viewManagerName);
+    @Nullable
+    ViewManager getViewManager(String viewManagerName);
 
     /**
      * Provides a list of view manager names to register in JS as {@code UIManager.ViewManagerName}
@@ -97,17 +97,14 @@ public interface ViewManagerResolver {
     List<String> getViewManagerNames();
   }
 
-  /**
-   * Resolves a name coming from native side to a name of the event that is exposed to JS.
-   */
+  /** Resolves a name coming from native side to a name of the event that is exposed to JS. */
   public interface CustomEventNamesResolver {
-    /**
-     * Returns custom event name by the provided event name.
-     */
-    @Nullable String resolveCustomEventName(String eventName);
+    /** Returns custom event name by the provided event name. */
+    @Nullable
+    String resolveCustomEventName(String eventName);
   }
 
-  protected static final String NAME = "UIManager";
+  public static final String NAME = "UIManager";
 
   private static final boolean DEBUG =
       PrinterHolder.getPrinter().shouldDisplayLogMessage(ReactDebugOverlayTags.UI_MANAGER);
@@ -118,20 +115,48 @@ public interface CustomEventNamesResolver {
   private final UIImplementation mUIImplementation;
   private final MemoryTrimCallback mMemoryTrimCallback = new MemoryTrimCallback();
   private final List<UIManagerModuleListener> mListeners = new ArrayList<>();
+  private @Nullable Map<String, WritableMap> mViewManagerConstantsCache;
+  private volatile int mViewManagerConstantsCacheSize;
 
   private int mBatchId = 0;
 
+  @SuppressWarnings("deprecated")
   public UIManagerModule(
       ReactApplicationContext reactContext,
       ViewManagerResolver viewManagerResolver,
       int minTimeLeftInFrameForNonBatchedOperationMs) {
+    this(
+        reactContext,
+        viewManagerResolver,
+        new UIImplementationProvider(),
+        minTimeLeftInFrameForNonBatchedOperationMs);
+  }
+
+  @SuppressWarnings("deprecated")
+  public UIManagerModule(
+      ReactApplicationContext reactContext,
+      List<ViewManager> viewManagersList,
+      int minTimeLeftInFrameForNonBatchedOperationMs) {
+    this(
+        reactContext,
+        viewManagersList,
+        new UIImplementationProvider(),
+        minTimeLeftInFrameForNonBatchedOperationMs);
+  }
+
+  @Deprecated
+  public UIManagerModule(
+      ReactApplicationContext reactContext,
+      ViewManagerResolver viewManagerResolver,
+      UIImplementationProvider uiImplementationProvider,
+      int minTimeLeftInFrameForNonBatchedOperationMs) {
     super(reactContext);
     DisplayMetricsHolder.initDisplayMetricsIfNotInitialized(reactContext);
     mEventDispatcher = new EventDispatcher(reactContext);
     mModuleConstants = createConstants(viewManagerResolver);
     mCustomDirectEvents = UIManagerModuleConstants.getDirectEventTypeConstants();
     mUIImplementation =
-        new UIImplementation(
+        uiImplementationProvider.createUIImplementation(
             reactContext,
             viewManagerResolver,
             mEventDispatcher,
@@ -140,9 +165,11 @@ public UIManagerModule(
     reactContext.addLifecycleEventListener(this);
   }
 
+  @Deprecated
   public UIManagerModule(
       ReactApplicationContext reactContext,
       List<ViewManager> viewManagersList,
+      UIImplementationProvider uiImplementationProvider,
       int minTimeLeftInFrameForNonBatchedOperationMs) {
     super(reactContext);
     DisplayMetricsHolder.initDisplayMetricsIfNotInitialized(reactContext);
@@ -150,7 +177,7 @@ public UIManagerModule(
     mCustomDirectEvents = MapBuilder.newHashMap();
     mModuleConstants = createConstants(viewManagersList, null, mCustomDirectEvents);
     mUIImplementation =
-        new UIImplementation(
+        uiImplementationProvider.createUIImplementation(
             reactContext,
             viewManagersList,
             mEventDispatcher,
@@ -158,6 +185,7 @@ public UIManagerModule(
 
     reactContext.addLifecycleEventListener(this);
   }
+
   /**
    * This method gives an access to the {@link UIImplementation} object that can be used to execute
    * operations on the view hierarchy.
@@ -180,8 +208,7 @@ public Map<String, Object> getConstants() {
   public void initialize() {
     getReactApplicationContext().registerComponentCallbacks(mMemoryTrimCallback);
     mEventDispatcher.registerEventEmitter(
-      DEFAULT,
-      getReactApplicationContext().getJSModule(RCTEventEmitter.class));
+        DEFAULT, getReactApplicationContext().getJSModule(RCTEventEmitter.class));
   }
 
   @Override
@@ -212,7 +239,9 @@ public void onCatalystInstanceDestroy() {
 
   private static Map<String, Object> createConstants(ViewManagerResolver viewManagerResolver) {
     ReactMarker.logMarker(CREATE_UI_MANAGER_MODULE_CONSTANTS_START);
-    Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CreateUIManagerConstants");
+    SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CreateUIManagerConstants")
+        .arg("Lazy", true)
+        .flush();
     try {
       return UIManagerModuleConstantsHelper.createConstants(viewManagerResolver);
     } finally {
@@ -226,7 +255,9 @@ private static Map<String, Object> createConstants(
       @Nullable Map<String, Object> customBubblingEvents,
       @Nullable Map<String, Object> customDirectEvents) {
     ReactMarker.logMarker(CREATE_UI_MANAGER_MODULE_CONSTANTS_START);
-    Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CreateUIManagerConstants");
+    SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "CreateUIManagerConstants")
+        .arg("Lazy", false)
+        .flush();
     try {
       return UIManagerModuleConstantsHelper.createConstants(
           viewManagers, customBubblingEvents, customDirectEvents);
@@ -236,8 +267,48 @@ private static Map<String, Object> createConstants(
     }
   }
 
+  /**
+   * Helper method to pre-compute the constants for a view manager. This method ensures that we
+   * don't block for getting the constants for view managers during TTI
+   *
+   * @param viewManagerNames
+   */
+  @Deprecated
+  public void preComputeConstantsForViewManager(List<String> viewManagerNames) {
+    Map<String, WritableMap> constantsMap = new ArrayMap<>();
+    for (String viewManagerName : viewManagerNames) {
+      WritableMap constants = computeConstantsForViewManager(viewManagerName);
+      if (constants != null) {
+        constantsMap.put(viewManagerName, constants);
+      }
+    }
+
+    // To ensure that this is thread safe, we return an unmodifiableMap
+    // We use mViewManagerConstantsCacheSize to count the times we access the contents of the map
+    // Once we have accessed all the values, we free this cache
+    // Assumption is that JS gets the constants only once for each viewManager.
+    // Using this mechanism prevents expensive synchronized blocks, due to the nature of how this is
+    // accessed - write one, read multiple times, and then throw the data away.
+    mViewManagerConstantsCacheSize = viewManagerNames.size();
+    mViewManagerConstantsCache = Collections.unmodifiableMap(constantsMap);
+  }
+
   @ReactMethod(isBlockingSynchronousMethod = true)
   public @Nullable WritableMap getConstantsForViewManager(final String viewManagerName) {
+    if (mViewManagerConstantsCache != null
+        && mViewManagerConstantsCache.containsKey(viewManagerName)) {
+      WritableMap constants = mViewManagerConstantsCache.get(viewManagerName);
+      if (--mViewManagerConstantsCacheSize <= 0) {
+        // Looks like we have read all the values from the cache, so we may as well free this cache
+        mViewManagerConstantsCache = null;
+      }
+      return constants;
+    } else {
+      return computeConstantsForViewManager(viewManagerName);
+    }
+  }
+
+  private @Nullable WritableMap computeConstantsForViewManager(final String viewManagerName) {
     ViewManager targetView =
         viewManagerName != null ? mUIImplementation.resolveViewManager(viewManagerName) : null;
     if (targetView == null) {
@@ -292,6 +363,11 @@ public Map<String, Long> getPerformanceCounters() {
     return mUIImplementation.getProfiledBatchPerfCounters();
   }
 
+  public <T extends SizeMonitoringFrameLayout & MeasureSpecProvider> int addRootView(
+      final T rootView) {
+        return addRootView(rootView, null, null);
+      }
+
   /**
    * Registers a new root view. JS can use the returned tag with manageChildren to add/remove
    * children to this view.
@@ -303,30 +379,28 @@ public Map<String, Long> getPerformanceCounters() {
    */
   @Override
   public <T extends SizeMonitoringFrameLayout & MeasureSpecProvider> int addRootView(
-      final T rootView) {
-    Systrace.beginSection(
-      Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
-      "UIManagerModule.addRootView");
+      final T rootView, WritableMap initialProps, @Nullable String initialUITemplate) {
+    Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "UIManagerModule.addRootView");
     final int tag = ReactRootViewTagGenerator.getNextRootViewTag();
     final ReactApplicationContext reactApplicationContext = getReactApplicationContext();
     final ThemedReactContext themedRootContext =
-      new ThemedReactContext(reactApplicationContext, rootView.getContext());
+        new ThemedReactContext(reactApplicationContext, rootView.getContext());
 
     mUIImplementation.registerRootView(rootView, tag, themedRootContext);
 
     rootView.setOnSizeChangedListener(
-      new SizeMonitoringFrameLayout.OnSizeChangedListener() {
-        @Override
-        public void onSizeChanged(final int width, final int height, int oldW, int oldH) {
-          reactApplicationContext.runOnNativeModulesQueueThread(
-            new GuardedRunnable(reactApplicationContext) {
-              @Override
-              public void runGuarded() {
-                updateNodeSize(tag, width, height);
-              }
-            });
-        }
-      });
+        new SizeMonitoringFrameLayout.OnSizeChangedListener() {
+          @Override
+          public void onSizeChanged(final int width, final int height, int oldW, int oldH) {
+            reactApplicationContext.runOnNativeModulesQueueThread(
+                new GuardedRunnable(reactApplicationContext) {
+                  @Override
+                  public void runGuarded() {
+                    updateNodeSize(tag, width, height);
+                  }
+                });
+          }
+        });
 
     Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
     return tag;
@@ -344,13 +418,11 @@ public void updateNodeSize(int nodeViewTag, int newWidth, int newHeight) {
   }
 
   /**
-   * Sets local data for a shadow node corresponded with given tag.
-   * In some cases we need a way to specify some environmental data to shadow node
-   * to improve layout (or do something similar), so {@code localData} serves these needs.
-   * For example, any stateful embedded native views may benefit from this.
-   * Have in mind that this data is not supposed to interfere with the state of
-   * the shadow view.
-   * Please respect one-directional data flow of React.
+   * Sets local data for a shadow node corresponded with given tag. In some cases we need a way to
+   * specify some environmental data to shadow node to improve layout (or do something similar), so
+   * {@code localData} serves these needs. For example, any stateful embedded native views may
+   * benefit from this. Have in mind that this data is not supposed to interfere with the state of
+   * the shadow view. Please respect one-directional data flow of React.
    */
   public void setViewLocalData(final int tag, final Object data) {
     final ReactApplicationContext reactApplicationContext = getReactApplicationContext();
@@ -397,7 +469,7 @@ public void updateView(int tag, String className, ReadableMap props) {
    * @param addChildTags a list of tags of views to add to the parent
    * @param addAtIndices parallel to addChildTags, a list of indices to insert those children at
    * @param removeFrom a list of indices of views to permanently remove. The memory for the
-   *        corresponding views and data structures should be reclaimed.
+   *     corresponding views and data structures should be reclaimed.
    */
   @ReactMethod
   public void manageChildren(
@@ -425,25 +497,18 @@ public void manageChildren(
       PrinterHolder.getPrinter().logMessage(ReactDebugOverlayTags.UI_MANAGER, message);
     }
     mUIImplementation.manageChildren(
-        viewTag,
-        moveFrom,
-        moveTo,
-        addChildTags,
-        addAtIndices,
-        removeFrom);
+        viewTag, moveFrom, moveTo, addChildTags, addAtIndices, removeFrom);
   }
 
   /**
-   * Interface for fast tracking the initial adding of views.  Children view tags are assumed to be
+   * Interface for fast tracking the initial adding of views. Children view tags are assumed to be
    * in order
    *
    * @param viewTag the view tag of the parent view
    * @param childrenTags An array of tags to add to the parent in order
    */
   @ReactMethod
-  public void setChildren(
-    int viewTag,
-    ReadableArray childrenTags) {
+  public void setChildren(int viewTag, ReadableArray childrenTags) {
     if (DEBUG) {
       String message = "(UIManager.setChildren) tag: " + viewTag + ", children: " + childrenTags;
       FLog.d(ReactConstants.TAG, message);
@@ -464,8 +529,8 @@ public void replaceExistingNonRootView(int oldTag, int newTag) {
 
   /**
    * Method which takes a container tag and then releases all subviews for that container upon
-   * receipt.
-   * TODO: The method name is incorrect and will be renamed, #6033872
+   * receipt. TODO: The method name is incorrect and will be renamed, #6033872
+   *
    * @param containerTag the tag of the container for which the subviews must be removed
    */
   @ReactMethod
@@ -484,7 +549,7 @@ public void measure(int reactTag, Callback callback) {
 
   /**
    * Determines the location on screen, width, and height of the given view relative to the device
-   * screen and returns the values via an async callback.  This is the absolute position including
+   * screen and returns the values via an async callback. This is the absolute position including
    * things like the status bar
    */
   @ReactMethod
@@ -495,74 +560,61 @@ public void measureInWindow(int reactTag, Callback callback) {
   /**
    * Measures the view specified by tag relative to the given ancestorTag. This means that the
    * returned x, y are relative to the origin x, y of the ancestor view. Results are stored in the
-   * given outputBuffer. We allow ancestor view and measured view to be the same, in which case
-   * the position always will be (0, 0) and method will only measure the view dimensions.
+   * given outputBuffer. We allow ancestor view and measured view to be the same, in which case the
+   * position always will be (0, 0) and method will only measure the view dimensions.
    *
-   * NB: Unlike {@link #measure}, this will measure relative to the view layout, not the visible
+   * <p>NB: Unlike {@link #measure}, this will measure relative to the view layout, not the visible
    * window which can cause unexpected results when measuring relative to things like ScrollViews
    * that can have offset content on the screen.
    */
   @ReactMethod
   public void measureLayout(
-      int tag,
-      int ancestorTag,
-      Callback errorCallback,
-      Callback successCallback) {
+      int tag, int ancestorTag, Callback errorCallback, Callback successCallback) {
     mUIImplementation.measureLayout(tag, ancestorTag, errorCallback, successCallback);
   }
 
   /**
    * Like {@link #measure} and {@link #measureLayout} but measures relative to the immediate parent.
    *
-   * NB: Unlike {@link #measure}, this will measure relative to the view layout, not the visible
+   * <p>NB: Unlike {@link #measure}, this will measure relative to the view layout, not the visible
    * window which can cause unexpected results when measuring relative to things like ScrollViews
    * that can have offset content on the screen.
    */
   @ReactMethod
   public void measureLayoutRelativeToParent(
-      int tag,
-      Callback errorCallback,
-      Callback successCallback) {
+      int tag, Callback errorCallback, Callback successCallback) {
     mUIImplementation.measureLayoutRelativeToParent(tag, errorCallback, successCallback);
   }
 
   /**
-   * Find the touch target child native view in  the supplied root view hierarchy, given a react
+   * Find the touch target child native view in the supplied root view hierarchy, given a react
    * target location.
    *
-   * This method is currently used only by Element Inspector DevTool.
+   * <p>This method is currently used only by Element Inspector DevTool.
    *
    * @param reactTag the tag of the root view to traverse
    * @param point an array containing both X and Y target location
    * @param callback will be called if with the identified child view react ID, and measurement
-   *        info. If no view was found, callback will be invoked with no data.
+   *     info. If no view was found, callback will be invoked with no data.
    */
   @ReactMethod
   public void findSubviewIn(
-      final int reactTag,
-      final ReadableArray point,
-      final Callback callback) {
+      final int reactTag, final ReadableArray point, final Callback callback) {
     mUIImplementation.findSubviewIn(
-      reactTag,
-      Math.round(PixelUtil.toPixelFromDIP(point.getDouble(0))),
-      Math.round(PixelUtil.toPixelFromDIP(point.getDouble(1))),
-      callback);
+        reactTag,
+        Math.round(PixelUtil.toPixelFromDIP(point.getDouble(0))),
+        Math.round(PixelUtil.toPixelFromDIP(point.getDouble(1))),
+        callback);
   }
 
-  /**
-   *  Check if the first shadow node is the descendant of the second shadow node
-   */
+  /** Check if the first shadow node is the descendant of the second shadow node */
   @ReactMethod
   public void viewIsDescendantOf(
-      final int reactTag,
-      final int ancestorReactTag,
-      final Callback callback) {
+      final int reactTag, final int ancestorReactTag, final Callback callback) {
     mUIImplementation.viewIsDescendantOf(reactTag, ancestorReactTag, callback);
   }
 
-  /**
-   * Registers a new Animation that can then be added to a View using {@link #addAnimation}.
-   */
+  /** Registers a new Animation that can then be added to a View using {@link #addAnimation}. */
   public void registerAnimation(Animation animation) {
     mUIImplementation.registerAnimation(animation);
   }
@@ -574,9 +626,7 @@ public void addAnimation(int reactTag, int animationID, Callback onSuccess) {
     mUIImplementation.addAnimation(reactTag, animationID, onSuccess);
   }
 
-  /**
-   * Removes an existing Animation, canceling it if it was in progress.
-   */
+  /** Removes an existing Animation, canceling it if it was in progress. */
   public void removeAnimation(int reactTag, int animationID) {
     mUIImplementation.removeAnimation(reactTag, animationID);
   }
@@ -594,11 +644,12 @@ public void clearJSResponder() {
   }
 
   @ReactMethod
-  public void dispatchViewManagerCommand(int reactTag, int commandId, @Nullable ReadableArray commandArgs) {
-    //TODO: this is a temporary approach to support ViewManagerCommands in Fabric until
+  public void dispatchViewManagerCommand(
+      int reactTag, int commandId, @Nullable ReadableArray commandArgs) {
+    // TODO: this is a temporary approach to support ViewManagerCommands in Fabric until
     // the dispatchViewManagerCommand() method is supported by Fabric JS API.
     UIManagerHelper.getUIManager(getReactApplicationContext(), ViewUtil.getUIManagerType(reactTag))
-      .dispatchCommand(reactTag, commandId, commandArgs);
+        .dispatchCommand(reactTag, commandId, commandArgs);
   }
 
   @Override
@@ -608,7 +659,8 @@ public void dispatchCommand(int reactTag, int commandId, @Nullable ReadableArray
 
   @ReactMethod
   public void playTouchSound() {
-    AudioManager audioManager = (AudioManager) getReactApplicationContext().getSystemService(Context.AUDIO_SERVICE);
+    AudioManager audioManager =
+        (AudioManager) getReactApplicationContext().getSystemService(Context.AUDIO_SERVICE);
     if (audioManager != null) {
       audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK);
     }
@@ -618,11 +670,11 @@ public void playTouchSound() {
    * Show a PopupMenu.
    *
    * @param reactTag the tag of the anchor view (the PopupMenu is displayed next to this view); this
-   *        needs to be the tag of a native view (shadow views can not be anchors)
+   *     needs to be the tag of a native view (shadow views can not be anchors)
    * @param items the menu items as an array of strings
    * @param error will be called if there is an error displaying the menu
    * @param success will be called with the position of the selected item as the first argument, or
-   *        no arguments if the menu is dismissed
+   *     no arguments if the menu is dismissed
    */
   @ReactMethod
   public void showPopupMenu(int reactTag, ReadableArray items, Callback error, Callback success) {
@@ -638,10 +690,10 @@ public void dismissPopupMenu() {
    * LayoutAnimation API on Android is currently experimental. Therefore, it needs to be enabled
    * explicitly in order to avoid regression in existing application written for iOS using this API.
    *
-   * Warning : This method will be removed in future version of React Native, and layout animation
-   * will be enabled by default, so always check for its existence before invoking it.
+   * <p>Warning : This method will be removed in future version of React Native, and layout
+   * animation will be enabled by default, so always check for its existence before invoking it.
    *
-   * TODO(9139831) : remove this method once layout animation is fully stable.
+   * <p>TODO(9139831) : remove this method once layout animation is fully stable.
    *
    * @param enabled whether layout animation is enabled or not
    */
@@ -651,38 +703,35 @@ public void setLayoutAnimationEnabledExperimental(boolean enabled) {
   }
 
   /**
-   * Configure an animation to be used for the native layout changes, and native views
-   * creation. The animation will only apply during the current batch operations.
+   * Configure an animation to be used for the native layout changes, and native views creation. The
+   * animation will only apply during the current batch operations.
    *
-   * TODO(7728153) : animating view deletion is currently not supported.
-   * TODO(7613721) : callbacks are not supported, this feature will likely be killed.
+   * <p>TODO(7728153) : animating view deletion is currently not supported. TODO(7613721) :
+   * callbacks are not supported, this feature will likely be killed.
    *
    * @param config the configuration of the animation for view addition/removal/update.
    * @param success will be called when the animation completes, or when the animation get
-   *        interrupted. In this case, callback parameter will be false.
+   *     interrupted. In this case, callback parameter will be false.
    * @param error will be called if there was an error processing the animation
    */
   @ReactMethod
-  public void configureNextLayoutAnimation(
-      ReadableMap config,
-      Callback success,
-      Callback error) {
+  public void configureNextLayoutAnimation(ReadableMap config, Callback success, Callback error) {
     mUIImplementation.configureNextLayoutAnimation(config, success, error);
   }
 
   /**
-   * To implement the transactional requirement mentioned in the class javadoc, we only commit
-   * UI changes to the actual view hierarchy once a batch of JS->Java calls have been completed.
-   * We know this is safe because all JS->Java calls that are triggered by a Java->JS call (e.g.
-   * the delivery of a touch event or execution of 'renderApplication') end up in a single
-   * JS->Java transaction.
+   * To implement the transactional requirement mentioned in the class javadoc, we only commit UI
+   * changes to the actual view hierarchy once a batch of JS->Java calls have been completed. We
+   * know this is safe because all JS->Java calls that are triggered by a Java->JS call (e.g. the
+   * delivery of a touch event or execution of 'renderApplication') end up in a single JS->Java
+   * transaction.
    *
-   * A better way to do this would be to have JS explicitly signal to this module when a UI
-   * transaction is done. Right now, though, this is how iOS does it, and we should probably
-   * update the JS and native code and make this change at the same time.
+   * <p>A better way to do this would be to have JS explicitly signal to this module when a UI
+   * transaction is done. Right now, though, this is how iOS does it, and we should probably update
+   * the JS and native code and make this change at the same time.
    *
-   * TODO(5279396): Make JS UI library explicitly notify the native UI module of the end of a UI
-   *                transaction using a standard native call
+   * <p>TODO(5279396): Make JS UI library explicitly notify the native UI module of the end of a UI
+   * transaction using a standard native call
    */
   @Override
   public void onBatchComplete() {
@@ -690,8 +739,8 @@ public void onBatchComplete() {
     mBatchId++;
 
     SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "onBatchCompleteUI")
-          .arg("BatchId", batchId)
-          .flush();
+        .arg("BatchId", batchId)
+        .flush();
     for (UIManagerModuleListener listener : mListeners) {
       listener.willDispatchViewUpdates(this);
     }
@@ -716,39 +765,24 @@ public void sendAccessibilityEvent(int tag, int eventType) {
     mUIImplementation.sendAccessibilityEvent(tag, eventType);
   }
 
-  @ReactMethod
-  public void performAccessibilityAction(int tag, int action) {
-    mUIImplementation.performAccessibilityAction(tag, action);
-  }
-
-  @ReactMethod
-  public void announceForAccessibility(int tag, String announcement) {
-    mUIImplementation.announceForAccessibility(tag, announcement);
-  }
-
   /**
-   * Schedule a block to be executed on the UI thread. Useful if you need to execute
-   * view logic after all currently queued view updates have completed.
+   * Schedule a block to be executed on the UI thread. Useful if you need to execute view logic
+   * after all currently queued view updates have completed.
    *
    * @param block that contains UI logic you want to execute.
-   *
-   * Usage Example:
-
-   UIManagerModule uiManager = reactContext.getNativeModule(UIManagerModule.class);
-   uiManager.addUIBlock(new UIBlock() {
-     public void execute (NativeViewHierarchyManager nvhm) {
-       View view = nvhm.resolveView(tag);
-       // ...execute your code on View (e.g. snapshot the view)
-     }
-   });
-     */
+   *     <p>Usage Example:
+   *     <p>UIManagerModule uiManager = reactContext.getNativeModule(UIManagerModule.class);
+   *     uiManager.addUIBlock(new UIBlock() { public void execute (NativeViewHierarchyManager nvhm)
+   *     { View view = nvhm.resolveView(tag); // ...execute your code on View (e.g. snapshot the
+   *     view) } });
+   */
   public void addUIBlock(UIBlock block) {
     mUIImplementation.addUIBlock(block);
   }
 
   /**
-   * Schedule a block to be executed on the UI thread. Useful if you need to execute
-   * view logic before all currently queued view updates have completed.
+   * Schedule a block to be executed on the UI thread. Useful if you need to execute view logic
+   * before all currently queued view updates have completed.
    *
    * @param block that contains UI logic you want to execute.
    */
@@ -765,16 +799,16 @@ public void removeUIManagerListener(UIManagerModuleListener listener) {
   }
 
   /**
-   * Given a reactTag from a component, find its root node tag, if possible.
-   * Otherwise, this will return 0. If the reactTag belongs to a root node, this
-   * will return the same reactTag.
+   * Given a reactTag from a component, find its root node tag, if possible. Otherwise, this will
+   * return 0. If the reactTag belongs to a root node, this will return the same reactTag.
    *
    * @param reactTag the component tag
-   *
    * @return the rootTag
    */
   public int resolveRootTagFromReactTag(int reactTag) {
-    return mUIImplementation.resolveRootTagFromReactTag(reactTag);
+    return ViewUtil.isRootTag(reactTag)
+        ? reactTag
+        : mUIImplementation.resolveRootTagFromReactTag(reactTag);
   }
 
   /** Dirties the node associated with the given react tag */
@@ -794,9 +828,17 @@ public void invalidateNodeLayout(int tag) {
    * Updates the styles of the {@link ReactShadowNode} based on the Measure specs received by
    * parameters.
    */
-  public void updateRootLayoutSpecs(int rootViewTag, int widthMeasureSpec, int heightMeasureSpec) {
-    mUIImplementation.updateRootView(rootViewTag, widthMeasureSpec, heightMeasureSpec);
-    mUIImplementation.dispatchViewUpdates(-1);
+  public void updateRootLayoutSpecs(
+      final int rootViewTag, final int widthMeasureSpec, final int heightMeasureSpec) {
+    ReactApplicationContext reactApplicationContext = getReactApplicationContext();
+    reactApplicationContext.runOnNativeModulesQueueThread(
+        new GuardedRunnable(reactApplicationContext) {
+          @Override
+          public void runGuarded() {
+            mUIImplementation.updateRootView(rootViewTag, widthMeasureSpec, heightMeasureSpec);
+            mUIImplementation.dispatchViewUpdates(-1);
+          }
+        });
   }
 
   /** Listener that drops the CSSNode pool on low memory when the app is backgrounded. */
@@ -810,11 +852,9 @@ public void onTrimMemory(int level) {
     }
 
     @Override
-    public void onConfigurationChanged(Configuration newConfig) {
-    }
+    public void onConfigurationChanged(Configuration newConfig) {}
 
     @Override
-    public void onLowMemory() {
-    }
+    public void onLowMemory() {}
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
index a676701f81bc94..6ca9380ba6422b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstants.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -35,7 +35,7 @@
                 "phasedRegistrationNames",
                 MapBuilder.of("bubbled", "onSelect", "captured", "onSelectCapture")))
         .put(
-            TouchEventType.START.getJSEventName(),
+            TouchEventType.getJSEventName(TouchEventType.START),
             MapBuilder.of(
                 "phasedRegistrationNames",
                 MapBuilder.of(
@@ -44,7 +44,7 @@
                     "captured",
                     "onTouchStartCapture")))
         .put(
-            TouchEventType.MOVE.getJSEventName(),
+            TouchEventType.getJSEventName(TouchEventType.MOVE),
             MapBuilder.of(
                 "phasedRegistrationNames",
                 MapBuilder.of(
@@ -53,7 +53,7 @@
                     "captured",
                     "onTouchMoveCapture")))
         .put(
-            TouchEventType.END.getJSEventName(),
+            TouchEventType.getJSEventName(TouchEventType.END),
             MapBuilder.of(
                 "phasedRegistrationNames",
                 MapBuilder.of(
@@ -62,7 +62,7 @@
                     "captured",
                     "onTouchEndCapture")))
         .put(
-            TouchEventType.CANCEL.getJSEventName(),
+            TouchEventType.getJSEventName(TouchEventType.CANCEL),
             MapBuilder.of(
                 "phasedRegistrationNames",
                 MapBuilder.of(
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
index beb067f1313ab0..8e993c1935cfe5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleConstantsHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 import static com.facebook.systrace.Systrace.TRACE_TAG_REACT_JAVA_BRIDGE;
 
 import com.facebook.react.common.MapBuilder;
-import com.facebook.systrace.Systrace;
+import com.facebook.react.config.ReactFeatureFlags;
 import com.facebook.systrace.SystraceMessage;
 import java.util.List;
 import java.util.Map;
@@ -28,14 +28,17 @@
   /**
    * Generates a lazy discovery enabled version of {@link UIManagerModule} constants. It only
    * contains a list of view manager names, so that JS side is aware of the managers there are.
-   * Actual ViewManager instantiation happens when {@code UIManager.SpecificViewManager} call happens.
-   * The View Manager is then registered on the JS side with the help of
-   * {@code UIManagerModule.getConstantsForViewManager}.
+   * Actual ViewManager instantiation happens when
+   * {@code UIManager.getViewManagerConfig('SpecificViewManager')} call happens. The View Manager is then
+   * registered on the JS side with the help of {@code UIManagerModule.getConstantsForViewManager}.
    */
   /* package */ static Map<String, Object> createConstants(
       UIManagerModule.ViewManagerResolver resolver) {
     Map<String, Object> constants = UIManagerModuleConstants.getConstants();
-    constants.put("ViewManagerNames", resolver.getViewManagerNames());
+    if (!ReactFeatureFlags.lazilyLoadViewManagers) {
+      constants.put("ViewManagerNames", resolver.getViewManagerNames());
+    }
+    constants.put("LazyViewManagersEnabled", true);
     return constants;
   }
 
@@ -99,7 +102,7 @@
           constants.put(viewManagerName, viewManagerConstants);
         }
       } finally {
-        Systrace.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
+        SystraceMessage.endSection(TRACE_TAG_REACT_JAVA_BRIDGE);
       }
     }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleListener.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleListener.java
index 46e5807a3b1466..e6d5c840016328 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIManagerModuleListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIViewOperationQueue.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIViewOperationQueue.java
index f07a1d5a3447ad..c23bf59954c915 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIViewOperationQueue.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/UIViewOperationQueue.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -556,6 +556,22 @@ public void execute() {
     }
   }
 
+  private final class LayoutUpdateFinishedOperation implements UIOperation {
+
+    private final ReactShadowNode mNode;
+    private final UIImplementation.LayoutUpdateListener mListener;
+
+    private LayoutUpdateFinishedOperation(ReactShadowNode node, UIImplementation.LayoutUpdateListener listener) {
+      mNode = node;
+      mListener = listener;
+    }
+
+    @Override
+    public void execute() {
+      mListener.onLayoutUpdated(mNode);
+    }
+  }
+
   private class UIBlockOperation implements UIOperation {
     private final UIBlock mBlock;
     public UIBlockOperation (UIBlock block) {
@@ -639,6 +655,7 @@ public void execute() {
   private long mProfiledBatchRunStartTime;
   private long mProfiledBatchBatchedExecutionTime;
   private long mProfiledBatchNonBatchedExecutionTime;
+  private long mThreadCpuTime;
 
   public UIViewOperationQueue(
       ReactApplicationContext reactContext,
@@ -677,6 +694,7 @@ public Map<String, Long> getProfiledBatchPerfCounters() {
     perfMap.put("RunStartTime", mProfiledBatchRunStartTime);
     perfMap.put("BatchedExecutionTime", mProfiledBatchBatchedExecutionTime);
     perfMap.put("NonBatchedExecutionTime", mProfiledBatchNonBatchedExecutionTime);
+    perfMap.put("NativeModulesThreadCpuTime", mThreadCpuTime);
     return perfMap;
   }
 
@@ -858,12 +876,8 @@ public void enqueueSendAccessibilityEvent(int tag, int eventType) {
     mOperations.add(new SendAccessibilityEvent(tag, eventType));
   }
 
-  public void enqueuePerformAccessibilityAction(int tag, int action) {
-    mOperations.add(new PerformAccessibilityAction(tag, action));
-  }
-
-  public void enqueueAnnounceForAccessibility(int tag, String announcement) {
-    mOperations.add(new AnnounceForAccessibility(tag, announcement));
+  public void enqueueLayoutUpdateFinished(ReactShadowNode node, UIImplementation.LayoutUpdateListener listener) {
+    mOperations.add(new LayoutUpdateFinishedOperation(node, listener));
   }
 
   public void enqueueUIBlock(UIBlock block) {
@@ -883,6 +897,7 @@ public void dispatchViewUpdates(
       .flush();
     try {
       final long dispatchViewUpdatesTime = SystemClock.uptimeMillis();
+      final long nativeModulesThreadCpuTime = SystemClock.currentThreadTimeMillis();
 
       // Store the current operation queues to dispatch and create new empty ones to continue
       // receiving new operations
@@ -937,6 +952,7 @@ public void run() {
                   mProfiledBatchLayoutTime = layoutTime;
                   mProfiledBatchDispatchViewUpdatesTime = dispatchViewUpdatesTime;
                   mProfiledBatchRunStartTime = runStartTime;
+                  mThreadCpuTime = nativeModulesThreadCpuTime;
 
                   Systrace.beginAsyncSection(
                       Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewAtIndex.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewAtIndex.java
index c242d7c310ddf5..685da777a72bd5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewAtIndex.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewAtIndex.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewDefaults.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewDefaults.java
index 0ccacd7f5dab7e..5583e2e9702116 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewDefaults.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewDefaults.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupDrawingOrderHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupDrawingOrderHelper.java
index b96562ed1713a4..457fd227b569fa 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupDrawingOrderHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupDrawingOrderHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupManager.java
index c4d5eed429dde7..d210d63e2d161b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewGroupManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,16 +7,10 @@
 
 package com.facebook.react.uimanager;
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.WeakHashMap;
-
 import android.view.View;
 import android.view.ViewGroup;
-
+import java.util.List;
+import java.util.WeakHashMap;
 import javax.annotation.Nullable;
 
 /**
@@ -93,14 +87,6 @@ public void removeAllViews(T parent) {
     }
   }
 
-  public void startViewTransition(T parent, View view) {
-    parent.startViewTransition(view);
-  }
-
-  public void endViewTransition(T parent, View view) {
-    parent.endViewTransition(view);
-  }
-
   /**
    * Returns whether this View type needs to handle laying out its own children instead of
    * deferring to the standard css-layout algorithm.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewHierarchyDumper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewHierarchyDumper.java
index 6c0ae3dd62d40d..2825dd5764202d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewHierarchyDumper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewHierarchyDumper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java
index 1895adc1ad17b1..f73493257fdbe8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,12 +10,15 @@
 import android.view.View;
 import com.facebook.react.bridge.BaseJavaModule;
 import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableNativeMap;
 import com.facebook.react.touch.JSResponderHandler;
 import com.facebook.react.touch.ReactInterceptingViewGroup;
 import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.annotations.ReactPropGroup;
 import com.facebook.react.uimanager.annotations.ReactPropertyHolder;
+import com.facebook.yoga.YogaMeasureMode;
 import java.util.Map;
 import javax.annotation.Nullable;
 
@@ -202,4 +205,23 @@ public void receiveCommand(T root, int commandId, @Nullable ReadableArray args)
   public Map<String, String> getNativeProps() {
     return ViewManagerPropertyUpdater.getNativeProps(getClass(), getShadowNodeClass());
   }
+
+  /**
+   *
+   */
+  public @Nullable Object updateLocalData(T view, ReactStylesDiffMap props, ReactStylesDiffMap localData) {
+    return null;
+  }
+
+  public float[] measure(
+      ReactContext context,
+      T view,
+      ReadableNativeMap localData,
+      ReadableNativeMap props,
+      float width,
+      YogaMeasureMode widthMode,
+      float height,
+      YogaMeasureMode heightMode) {
+    return null;
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerPropertyUpdater.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerPropertyUpdater.java
index b64606acd4d870..7bea9928a7cf96 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerPropertyUpdater.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerPropertyUpdater.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerRegistry.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerRegistry.java
index 7e71b566b5799d..b657eb5918c0e5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerRegistry.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagerRegistry.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagersPropertyCache.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagersPropertyCache.java
index 2c4098b0d71a74..98428f40b9ff92 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagersPropertyCache.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManagersPropertyCache.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewProps.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewProps.java
index feab6d30e3f332..85d02027d4dec2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewProps.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewProps.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -17,11 +17,6 @@
  */
 public class ViewProps {
 
-  /**
-   * Kill switch to make overflow hidden by default. This flag will eventually be removed.
-   */
-  public static boolean sDefaultOverflowHidden;
-
   public static final String VIEW_CLASS_NAME = "RCTView";
 
   // Layout only (only affect positions of children, causes no drawing)
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
index e4c259197ff21f..5b235cb4bf2c19 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/BUCK b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/BUCK
index 9159573d486cec..bf9fe930463e96 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "annotations",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactProp.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactProp.java
index 15ac3306534a00..3a57c3198916eb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactProp.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactProp.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropGroup.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropGroup.java
index ff1689840bac2d..fb623dd50c0a2a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropGroup.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropertyHolder.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropertyHolder.java
index cfe591a9dc5335..7b6476187db5cb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropertyHolder.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/annotations/ReactPropertyHolder.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/BUCK b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/BUCK
index 2e8df3aca77ea3..cd3ab58e4655d3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/BUCK
@@ -1,11 +1,10 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "common",
     srcs = glob(["*.java"]),
     provided_deps = [
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
     ],
     visibility = [
         "PUBLIC",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/MeasureSpecProvider.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/MeasureSpecProvider.java
index 69fef4693d2e15..fc9a8fb322c738 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/MeasureSpecProvider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/MeasureSpecProvider.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/SizeMonitoringFrameLayout.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/SizeMonitoringFrameLayout.java
index f7dd744c4b11b2..819753ca4db01f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/SizeMonitoringFrameLayout.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/SizeMonitoringFrameLayout.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/UIManagerType.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/UIManagerType.java
index 44a2e8b8f62a5a..65bed816ad9223 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/UIManagerType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/UIManagerType.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/ViewUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/ViewUtil.java
index ef679635efbbc1..2333fccc10f958 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/ViewUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/common/ViewUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,4 +25,13 @@ public static int getUIManagerType(int reactTag) {
     return DEFAULT;
   }
 
+  /**
+   * @param reactTag {@link int} react tag
+   * @return if the react tag received by parameter is a RootTag or not.
+   */
+  @Deprecated
+  public static boolean isRootTag(int reactTag) {
+    return reactTag % 10 == 1;
+  }
+
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/debug/NotThreadSafeViewHierarchyUpdateDebugListener.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/debug/NotThreadSafeViewHierarchyUpdateDebugListener.java
index c1ac00488f3906..ff695b8db11a32 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/debug/NotThreadSafeViewHierarchyUpdateDebugListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/debug/NotThreadSafeViewHierarchyUpdateDebugListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BatchEventDispatchedListener.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BatchEventDispatchedListener.java
new file mode 100644
index 00000000000000..f7ce2baccf9e9d
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/BatchEventDispatchedListener.java
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+package com.facebook.react.uimanager.events;
+
+public interface BatchEventDispatchedListener {
+
+  /**
+   * Called after a batch of low priority events has been dispatched.
+   */
+  void onBatchEventDispatched();
+
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ContentSizeChangeEvent.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ContentSizeChangeEvent.java
index 2b7600f00a98fb..9462bcf6264913 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ContentSizeChangeEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ContentSizeChangeEvent.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/Event.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/Event.java
index 68d07f3f87887a..8d5b3aaa97cc52 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/Event.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/Event.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcher.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcher.java
index 37fcadda30ad1b..720b1dceae17b5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,6 +20,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicInteger;
 import javax.annotation.Nullable;
@@ -90,6 +91,7 @@ public int compare(Event lhs, Event rhs) {
   private final DispatchEventsRunnable mDispatchEventsRunnable = new DispatchEventsRunnable();
   private final ArrayList<Event> mEventStaging = new ArrayList<>();
   private final ArrayList<EventDispatcherListener> mListeners = new ArrayList<>();
+  private final List<BatchEventDispatchedListener> mPostEventDispatchListeners = new ArrayList<>();
   private final ScheduleDispatchFrameCallback mCurrentFrameCallback =
     new ScheduleDispatchFrameCallback();
   private final AtomicInteger mHasDispatchScheduledCount = new AtomicInteger();
@@ -149,6 +151,14 @@ public void removeListener(EventDispatcherListener listener) {
     mListeners.remove(listener);
   }
 
+  public void addBatchEventDispatchedListener(BatchEventDispatchedListener listener) {
+    mPostEventDispatchListeners.add(listener);
+  }
+
+  public void removeBatchEventDispatchedListener(BatchEventDispatchedListener listener) {
+    mPostEventDispatchListeners.remove(listener);
+  }
+
   @Override
   public void onHostResume() {
     mCurrentFrameCallback.maybePostFromNonUI();
@@ -358,6 +368,9 @@ public void run() {
           clearEventsToDispatch();
           mEventCookieToLastEventIdx.clear();
         }
+        for (BatchEventDispatchedListener listener : mPostEventDispatchListeners) {
+          listener.onBatchEventDispatched();
+        }
       } finally {
         Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
       }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcherListener.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcherListener.java
index acf018bec5d78f..524b39ecb63041 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcherListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/EventDispatcherListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/NativeGestureUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/NativeGestureUtil.java
index 41328fd24c7493..1604b951aa3dc2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/NativeGestureUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/NativeGestureUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/RCTEventEmitter.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/RCTEventEmitter.java
index a46d0b3ea8988d..e3e9a03fcb7258 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/RCTEventEmitter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/RCTEventEmitter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ReactEventEmitter.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ReactEventEmitter.java
index 64aac3f795fcc4..61e3e95cd4f58c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ReactEventEmitter.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/ReactEventEmitter.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,6 @@
 
 import static com.facebook.react.uimanager.events.TouchesHelper.TARGET_KEY;
 
-import android.util.Log;
 import android.util.SparseArray;
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -17,8 +16,6 @@
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.uimanager.common.UIManagerType;
 import com.facebook.react.uimanager.common.ViewUtil;
-import java.io.Closeable;
-import java.io.IOException;
 import javax.annotation.Nullable;
 
 public class ReactEventEmitter implements RCTEventEmitter {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.java
index 1d16c159523231..617b9bc9839ada 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -117,7 +117,7 @@ public void onDispose() {
 
   @Override
   public String getEventName() {
-    return Assertions.assertNotNull(mTouchEventType).getJSEventName();
+    return TouchEventType.getJSEventName(Assertions.assertNotNull(mTouchEventType));
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventCoalescingKeyHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventCoalescingKeyHelper.java
index 3ead8fc7bfe4f3..79e8b7bf1ca4a6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventCoalescingKeyHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventCoalescingKeyHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventType.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventType.java
index 6d6cac7b6cf0ed..04439c41269fed 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchEventType.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,18 +11,23 @@
  * Touch event types that JS module RCTEventEmitter can understand
  */
 public enum TouchEventType {
-  START("topTouchStart"),
-  END("topTouchEnd"),
-  MOVE("topTouchMove"),
-  CANCEL("topTouchCancel");
+  START,
+  END,
+  MOVE,
+  CANCEL;
 
-  private final String mJSEventName;
-
-  TouchEventType(String jsEventName) {
-    mJSEventName = jsEventName;
-  }
-
-  public String getJSEventName() {
-    return mJSEventName;
+  public static String getJSEventName(TouchEventType type) {
+    switch (type) {
+      case START:
+        return "topTouchStart";
+      case END:
+        return "topTouchEnd";
+      case MOVE:
+        return "topTouchMove";
+      case CANCEL:
+        return "topTouchCancel";
+      default:
+        throw new IllegalArgumentException("Unexpected type " + type);
+    }
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchesHelper.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchesHelper.java
index 59212aa830d361..4907870d63750a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchesHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/events/TouchesHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,7 +8,6 @@
 package com.facebook.react.uimanager.events;
 
 import android.view.MotionEvent;
-
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.WritableArray;
 import com.facebook.react.bridge.WritableMap;
@@ -104,7 +103,7 @@ public static void sendTouchEvent(
     }
 
     rctEventEmitter.receiveTouches(
-        type.getJSEventName(),
+        TouchEventType.getJSEventName(type),
         pointers,
         changedIndices);
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AbstractLayoutAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AbstractLayoutAnimation.java
index 499057316069ba..ca9bb385324f8b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AbstractLayoutAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AbstractLayoutAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AnimatedPropertyType.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AnimatedPropertyType.java
index 78e6a2b01fc039..a8e569fbe91c19 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AnimatedPropertyType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/AnimatedPropertyType.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -10,28 +10,23 @@
  * view creation.
  */
 /* package */ enum AnimatedPropertyType {
-  OPACITY("opacity"),
-  SCALE_X("scaleX"),
-  SCALE_Y("scaleY"),
-  SCALE_XY("scaleXY");
-
-  private final String mName;
-
-  private AnimatedPropertyType(String name) {
-    mName = name;
-  }
+  OPACITY,
+  SCALE_X,
+  SCALE_Y,
+  SCALE_XY;
 
   public static AnimatedPropertyType fromString(String name) {
-    for (AnimatedPropertyType property : AnimatedPropertyType.values()) {
-      if (property.toString().equalsIgnoreCase(name)) {
-        return property;
-      }
+    switch (name) {
+      case "opacity":
+        return OPACITY;
+      case "scaleX":
+        return SCALE_X;
+      case "scaleY":
+        return SCALE_Y;
+      case "scaleXY":
+        return SCALE_XY;
+      default:
+        throw new IllegalArgumentException("Unsupported animated property: " + name);
     }
-    throw new IllegalArgumentException("Unsupported animated property : " + name);
-  }
-
-  @Override
-  public String toString() {
-    return mName;
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/BaseLayoutAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/BaseLayoutAnimation.java
index 32c2c48fd7f6d7..0c586fb5ba2f43 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/BaseLayoutAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/BaseLayoutAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/InterpolatorType.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/InterpolatorType.java
index 2f4d54b16d7d3b..9334ab28acfc1d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/InterpolatorType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/InterpolatorType.java
@@ -1,37 +1,36 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 package com.facebook.react.uimanager.layoutanimation;
 
+import java.util.Locale;
+
 /**
  * Enum representing the different interpolators that can be used in layout animation configuration.
  */
 /* package */ enum InterpolatorType {
-  LINEAR("linear"),
-  EASE_IN("easeIn"),
-  EASE_OUT("easeOut"),
-  EASE_IN_EASE_OUT("easeInEaseOut"),
-  SPRING("spring");
-
-  private final String mName;
-
-  private InterpolatorType(String name) {
-    mName = name;
-  }
+  LINEAR,
+  EASE_IN,
+  EASE_OUT,
+  EASE_IN_EASE_OUT,
+  SPRING;
 
   public static InterpolatorType fromString(String name) {
-    for (InterpolatorType type : InterpolatorType.values()) {
-      if (type.toString().equalsIgnoreCase(name)) {
-        return type;
-      }
+    switch (name.toLowerCase(Locale.US)) {
+      case "linear":
+        return LINEAR;
+      case "easein":
+        return EASE_IN;
+      case "easeout":
+        return EASE_OUT;
+      case "easeineaseout":
+        return EASE_IN_EASE_OUT;
+      case "spring":
+        return SPRING;
+      default:
+        throw new IllegalArgumentException("Unsupported interpolation type : " + name);
     }
-    throw new IllegalArgumentException("Unsupported interpolation type : " + name);
-  }
-
-  @Override
-  public String toString() {
-    return mName;
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationController.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationController.java
index 62568dcc4fbbec..2f08da20ecae2b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationController.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationController.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -46,19 +46,19 @@ public void initializeFromConfig(final @Nullable ReadableMap config) {
 
     mShouldAnimateLayout = false;
     int globalDuration = config.hasKey("duration") ? config.getInt("duration") : 0;
-    if (config.hasKey(LayoutAnimationType.CREATE.toString())) {
+    if (config.hasKey(LayoutAnimationType.toString(LayoutAnimationType.CREATE))) {
       mLayoutCreateAnimation.initializeFromConfig(
-          config.getMap(LayoutAnimationType.CREATE.toString()), globalDuration);
+          config.getMap(LayoutAnimationType.toString(LayoutAnimationType.CREATE)), globalDuration);
       mShouldAnimateLayout = true;
     }
-    if (config.hasKey(LayoutAnimationType.UPDATE.toString())) {
+    if (config.hasKey(LayoutAnimationType.toString(LayoutAnimationType.UPDATE))) {
       mLayoutUpdateAnimation.initializeFromConfig(
-          config.getMap(LayoutAnimationType.UPDATE.toString()), globalDuration);
+          config.getMap(LayoutAnimationType.toString(LayoutAnimationType.UPDATE)), globalDuration);
       mShouldAnimateLayout = true;
     }
-    if (config.hasKey(LayoutAnimationType.DELETE.toString())) {
+    if (config.hasKey(LayoutAnimationType.toString(LayoutAnimationType.DELETE))) {
       mLayoutDeleteAnimation.initializeFromConfig(
-          config.getMap(LayoutAnimationType.DELETE.toString()), globalDuration);
+          config.getMap(LayoutAnimationType.toString(LayoutAnimationType.DELETE)), globalDuration);
       mShouldAnimateLayout = true;
     }
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java
index be181bbc55cc82..328e0dc6eebfe5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationType.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationType.java
index 23f325226f576a..253faa2ec5f460 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutAnimationType.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -9,18 +9,20 @@
  * Enum representing the different animation type that can be specified in layout animation config.
  */
 /* package */ enum LayoutAnimationType {
-  CREATE("create"),
-  UPDATE("update"),
-  DELETE("delete");
+  CREATE,
+  UPDATE,
+  DELETE;
 
-  private final String mName;
-
-  private LayoutAnimationType(String name) {
-    mName = name;
-  }
-
-  @Override
-  public String toString() {
-    return mName;
+  public static String toString(LayoutAnimationType type) {
+    switch (type) {
+      case CREATE:
+        return "create";
+      case UPDATE:
+        return "update";
+      case DELETE:
+        return "delete";
+      default:
+        throw new IllegalArgumentException("Unsupported LayoutAnimationType: " + type);
+    }
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.java
index 07040597f6f4d5..9259142e956650 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutCreateAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutDeleteAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutDeleteAnimation.java
index 5d507c3dedb948..e4db29c7be3938 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutDeleteAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutDeleteAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java
index 53a8863059e802..7021d6978f056e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutHandlingAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutUpdateAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutUpdateAnimation.java
index 0c8477270c78c7..2bd025db96d3eb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutUpdateAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/LayoutUpdateAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/OpacityAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/OpacityAnimation.java
index 71d5aa7b5d9bd0..053598f977daa9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/OpacityAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/OpacityAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/PositionAndSizeAnimation.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/PositionAndSizeAnimation.java
index 1f742f2a012645..f1d3c691fea7b6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/PositionAndSizeAnimation.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/PositionAndSizeAnimation.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/SimpleSpringInterpolator.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/SimpleSpringInterpolator.java
index 4340625b5b4881..b83f0974d566ca 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/SimpleSpringInterpolator.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/layoutanimation/SimpleSpringInterpolator.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/BUCK b/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/BUCK
index 72c763fb906554..b00295716e6572 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "util",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/ReactFindViewUtil.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/ReactFindViewUtil.java
index c1e10388223f17..84a98b1f7f8ccf 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/ReactFindViewUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/util/ReactFindViewUtil.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/util/BUCK b/ReactAndroid/src/main/java/com/facebook/react/util/BUCK
index 73bc3fe411b366..7f700ab80a797f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/util/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/util/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "util",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/util/JSStackTrace.java b/ReactAndroid/src/main/java/com/facebook/react/util/JSStackTrace.java
index 7a3d5f02e0dac3..2e1dfa2d159b92 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/util/JSStackTrace.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/util/JSStackTrace.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupShadowNode.java
index fdb9f53b301869..9c97a61277bd76 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -28,11 +28,6 @@ public class ARTGroupShadowNode extends ARTVirtualNode {
 
   public ARTGroupShadowNode() { }
 
-  public ARTGroupShadowNode(ARTGroupShadowNode node) {
-    super(node);
-    this.mClipping = new RectF(node.mClipping);
-  }
-
   @ReactProp(name = "clipping")
   public void setClipping(@Nullable ReadableArray clippingDims) {
     float[] clippingData = PropHelper.toFloatArray(clippingDims);
@@ -42,11 +37,6 @@ public void setClipping(@Nullable ReadableArray clippingDims) {
     }
   }
 
-  @Override
-  protected ReactShadowNodeImpl copy() {
-    return new ARTGroupShadowNode(this);
-  }
-
   @Override
   public boolean isVirtual() {
     return true;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupViewManager.java
index c164ebda5c128d..e80835607b5332 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTGroupViewManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTRenderableViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTRenderableViewManager.java
index bb98853f652f7a..60ac57ed039f04 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTRenderableViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTRenderableViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,9 +20,9 @@
  */
 public class ARTRenderableViewManager extends ViewManager<View, ReactShadowNode> {
 
-  /* package */ static final String CLASS_GROUP = "ARTGroup";
-  /* package */ static final String CLASS_SHAPE = "ARTShape";
-  /* package */ static final String CLASS_TEXT = "ARTText";
+  public static final String CLASS_GROUP = "ARTGroup";
+  public static final String CLASS_SHAPE = "ARTShape";
+  public static final String CLASS_TEXT = "ARTText";
 
   private final String mClassName;
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeShadowNode.java
index d4bc72e284f425..5cd54338bd1203 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -60,22 +60,6 @@ public class ARTShapeShadowNode extends ARTVirtualNode {
 
   public ARTShapeShadowNode() { }
 
-  public ARTShapeShadowNode(ARTShapeShadowNode node) {
-    super(node);
-    mPath = new Path(node.mPath);
-    mStrokeColor = copyArray(node.mStrokeColor);
-    mBrushData = copyArray(node.mBrushData);
-    mStrokeDash = copyArray(node.mStrokeDash);
-    mStrokeWidth = node.mStrokeWidth;
-    mStrokeCap = node.mStrokeCap;
-    mStrokeJoin = node.mStrokeJoin;
-  }
-
-  @Override
-  protected ARTShapeShadowNode copy() {
-    return new ARTShapeShadowNode(this);
-  }
-
   @ReactProp(name = "d")
   public void setShapePath(@Nullable ReadableArray shapePath) {
     float[] pathData = PropHelper.toFloatArray(shapePath);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeViewManager.java
index 5c2c8a938a6b4a..d980eaac68d4b2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTShapeViewManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceView.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceView.java
index 93f2c21eb1aacd..190cbe74606dbc 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewManager.java
index 24787ef84a5364..351e96284312c9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,7 +22,7 @@
 public class ARTSurfaceViewManager extends
     BaseViewManager<ARTSurfaceView, ARTSurfaceViewShadowNode> {
 
-  protected static final String REACT_CLASS = "ARTSurfaceView";
+  public static final String REACT_CLASS = "ARTSurfaceView";
 
   private static final YogaMeasureFunction MEASURE_FUNCTION = new YogaMeasureFunction() {
     @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewShadowNode.java
index 429812e1991627..7e20931a8f714a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTSurfaceViewShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextShadowNode.java
index accb79e4ef8323..c5e60563a73c37 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -42,17 +42,6 @@ public class ARTTextShadowNode extends ARTShapeShadowNode {
 
   public ARTTextShadowNode() { }
 
-  public ARTTextShadowNode(ARTTextShadowNode node) {
-    super(node);
-    mTextAlignment = node.mTextAlignment;
-    mFrame = node.mFrame; // copy reference as mFrame is already immutable
-  }
-
-  @Override
-  protected ARTShapeShadowNode copy() {
-    return new ARTTextShadowNode(this);
-  }
-
   @ReactProp(name = "frame")
   public void setFrame(@Nullable ReadableMap frame) {
     mFrame = frame;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextViewManager.java
index a697c31ae6fc1f..5b82b13d879868 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTTextViewManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTVirtualNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTVirtualNode.java
index 158afd16eac943..cb1a304fe9ff8e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTVirtualNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/ARTVirtualNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -37,13 +37,6 @@ public ARTVirtualNode() {
     mScale = DisplayMetricsHolder.getWindowDisplayMetrics().density;
   }
 
-  protected ARTVirtualNode(ARTVirtualNode artVirtualNode) {
-    super(artVirtualNode);
-    mScale = artVirtualNode.mScale;
-    mOpacity = artVirtualNode.mOpacity;
-    mMatrix = new Matrix(artVirtualNode.mMatrix);
-  }
-
   @Override
   public boolean isVirtual() {
     return true;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/art/BUCK
index dcdd2f51cc84d5..23b3b7ce773e86 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "art",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/art/PropHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/art/PropHelper.java
index b841cf856b1eea..8c4b03f58bce93 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/art/PropHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/art/PropHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/BUCK
index 7bf08765acca49..1973543c07d584 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "checkbox",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBox.java b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBox.java
index 98c0b67aa42400..136512b31a006b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBox.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBox.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxEvent.java
index 0f41725efdb64b..fa2cffc8afa1a3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxManager.java
index c520f2fc8f5aee..fcff4e6f2eb081 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/checkbox/ReactCheckBoxManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/common/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/common/BUCK
index 223f3cb2f00584..ea90e56cf58cac 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/common/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/common/BUCK
@@ -1,9 +1,10 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "common",
     srcs = glob(["*.java"]),
     provided_deps = [
+        react_native_dep("third-party/java/jsr-305:jsr-305"),
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
     ],
     visibility = [
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/common/ContextUtils.java b/ReactAndroid/src/main/java/com/facebook/react/views/common/ContextUtils.java
new file mode 100644
index 00000000000000..e2bb7393f4e9e7
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/common/ContextUtils.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+package com.facebook.react.views.common;
+
+import android.content.Context;
+import android.content.ContextWrapper;
+import javax.annotation.Nullable;
+
+/**
+ * Class containing static methods involving manipulations of Contexts and their related subclasses.
+ */
+public class ContextUtils {
+
+  /**
+   * Returns the nearest context in the chain (as defined by ContextWrapper.getBaseContext()) which
+   * is an instance of the specified type, or null if one could not be found
+   *
+   * @param context Initial context
+   * @param clazz Class instance to look for
+   * @param <T>
+   * @return the first context which is an instance of the specified class, or null if none exists
+   */
+  public static @Nullable <T> T findContextOfType(
+    @Nullable Context context, Class<? extends T> clazz) {
+    while (!(clazz.isInstance(context))) {
+      if (context instanceof ContextWrapper) {
+        Context baseContext = ((ContextWrapper) context).getBaseContext();
+        if (context == baseContext) {
+          return null;
+        } else {
+          context = baseContext;
+        }
+      } else {
+        return null;
+      }
+    }
+    return (T) context;
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/common/ViewHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/common/ViewHelper.java
index 0c5bf42e1bede6..b827ff629db4c1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/common/ViewHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/common/ViewHelper.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/BUCK
index 18b5c8d3febbc8..3fb17b776428a0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "drawer",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayout.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayout.java
index acd637a7166e98..0de813610437d0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayout.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayout.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayoutManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayoutManager.java
index 61139f8a01d24b..55ab481d130120 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayoutManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/ReactDrawerLayoutManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerClosedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerClosedEvent.java
index 4f51b7f596bf47..9580733e8a8f44 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerClosedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerClosedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerOpenedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerOpenedEvent.java
index 471cd079dad652..abbcc115602ac3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerOpenedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerOpenedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerSlideEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerSlideEvent.java
index ca4260e44f9335..84b4aee192b28a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerSlideEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerSlideEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerStateChangedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerStateChangedEvent.java
index 41682e17f6eb65..96472f1f3fc4bd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerStateChangedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/drawer/events/DrawerStateChangedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/image/BUCK
index 1c791b4ada85af..ea8d6e5b7a22bd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 IMAGE_EVENT_FILES = [
     "ImageLoadEvent.java",
@@ -8,7 +8,6 @@ rn_android_library(
     name = "imageevents",
     srcs = IMAGE_EVENT_FILES,
     provided_deps = [
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
     ],
     visibility = ["PUBLIC"],
@@ -26,7 +25,6 @@ rn_android_library(
         exclude = IMAGE_EVENT_FILES,
     ),
     provided_deps = [
-        react_native_dep("third-party/android/support-annotations:android-support-annotations"),
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
     ],
     visibility = [
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/GlobalImageLoadListener.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/GlobalImageLoadListener.java
index 842bb60da66bcd..f547ec7d69bf4e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/GlobalImageLoadListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/GlobalImageLoadListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageLoadEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageLoadEvent.java
index 2c85c4ad7abb2b..43d4c152c48531 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageLoadEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageLoadEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -33,13 +33,18 @@ public class ImageLoadEvent extends Event<ImageLoadEvent> {
   private final @Nullable String mImageUri;
   private final int mWidth;
   private final int mHeight;
+  private final @Nullable String mImageError;
 
   public ImageLoadEvent(int viewId, @ImageEventType int eventType) {
     this(viewId, eventType, null);
   }
 
+  public ImageLoadEvent(int viewId, @ImageEventType int eventType, boolean error, String message) {
+    this(viewId, eventType, null, 0, 0, message);
+  }
+
   public ImageLoadEvent(int viewId, @ImageEventType int eventType, String imageUri) {
-    this(viewId, eventType, imageUri, 0, 0);
+    this(viewId, eventType, imageUri, 0, 0, null);
   }
 
   public ImageLoadEvent(
@@ -48,11 +53,22 @@ public ImageLoadEvent(
     @Nullable String imageUri,
     int width,
     int height) {
+    this(viewId, eventType, imageUri, width, height, null);
+  }
+
+  public ImageLoadEvent(
+    int viewId,
+    @ImageEventType int eventType,
+    @Nullable String imageUri,
+    int width,
+    int height,
+    @Nullable String message) {
     super(viewId);
     mEventType = eventType;
     mImageUri = imageUri;
     mWidth = width;
     mHeight = height;
+    mImageError = message;
   }
 
   public static String eventNameForType(@ImageEventType int eventType) {
@@ -88,7 +104,7 @@ public short getCoalescingKey() {
   public void dispatch(RCTEventEmitter rctEventEmitter) {
     WritableMap eventData = null;
 
-    if (mImageUri != null || mEventType == ON_LOAD) {
+    if (mImageUri != null || (mEventType == ON_LOAD || mEventType == ON_ERROR)) {
       eventData = Arguments.createMap();
 
       if (mImageUri != null) {
@@ -103,6 +119,8 @@ public void dispatch(RCTEventEmitter rctEventEmitter) {
           source.putString("url", mImageUri);
         }
         eventData.putMap("source", source);
+      } else if (mEventType == ON_ERROR) {
+        eventData.putString("error", mImageError);
       }
     }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMethod.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMethod.java
index 98fb2fe7151c2d..52edd666570954 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMethod.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMethod.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMode.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMode.java
index 3f98058feedd0c..a04b2adf67801d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ImageResizeMode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.java
index 03ad027c2618b2..e1df87fcb7aca0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageManager.java
index 2565e2294ef1c6..57b4853f369c83 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,7 +29,7 @@
 @ReactModule(name = ReactImageManager.REACT_CLASS)
 public class ReactImageManager extends SimpleViewManager<ReactImageView> {
 
-  protected static final String REACT_CLASS = "RCTImageView";
+  public static final String REACT_CLASS = "RCTImageView";
 
   @Override
   public String getName() {
@@ -109,7 +109,7 @@ public void setBorderColor(ReactImageView view, @Nullable Integer borderColor) {
     }
   }
 
-  @ReactProp(name = "overlayColor")
+  @ReactProp(name = "overlayColor", customType = "Color")
   public void setOverlayColor(ReactImageView view, @Nullable Integer overlayColor) {
     if (overlayColor == null) {
       view.setOverlayColor(Color.TRANSPARENT);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageView.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageView.java
index e14603ff1acb05..305f69526a3b17 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageView.java
@@ -1,6 +1,6 @@
 
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -262,9 +262,8 @@ public void onFinalImageSet(
         @Override
         public void onFailure(String id, Throwable throwable) {
           mEventDispatcher.dispatchEvent(
-            new ImageLoadEvent(getId(), ImageLoadEvent.ON_ERROR));
-          mEventDispatcher.dispatchEvent(
-            new ImageLoadEvent(getId(), ImageLoadEvent.ON_LOAD_END));
+            new ImageLoadEvent(getId(), ImageLoadEvent.ON_ERROR,
+              true, throwable.getMessage()));
         }
       };
     }
@@ -439,7 +438,7 @@ public void maybeUpdateView() {
     hierarchy.setActualImageScaleType(mScaleType);
 
     if (mDefaultImageDrawable != null) {
-      hierarchy.setPlaceholderImage(mDefaultImageDrawable, ScalingUtils.ScaleType.CENTER);
+      hierarchy.setPlaceholderImage(mDefaultImageDrawable, mScaleType);
     }
 
     if (mLoadingImageDrawable != null) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/image/ScaleTypeStartInside.java b/ReactAndroid/src/main/java/com/facebook/react/views/image/ScaleTypeStartInside.java
index 96640d044d5a14..3a512dbb55ddda 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/image/ScaleTypeStartInside.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/image/ScaleTypeStartInside.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/BUCK
index 98227e605a5a32..ab328b40c0f327 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "imagehelper",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ImageSource.java b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ImageSource.java
index 116ef13bb92f7b..748247785d6356 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ImageSource.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ImageSource.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/MultiSourceHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/MultiSourceHelper.java
index d01b314e83681a..f71ea562de148b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/MultiSourceHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/MultiSourceHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ResourceDrawableIdHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ResourceDrawableIdHelper.java
index de962cecab2312..724db8c376d145 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ResourceDrawableIdHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/imagehelper/ResourceDrawableIdHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/modal/BUCK
index 8765148822cfc7..f3cef9f54e7613 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "modal",
@@ -17,6 +17,7 @@ rn_android_library(
         react_native_target("java/com/facebook/react/touch:touch"),
         react_native_target("java/com/facebook/react/uimanager:uimanager"),
         react_native_target("java/com/facebook/react/uimanager/annotations:annotations"),
+        react_native_target("java/com/facebook/react/views/common:common"),
         react_native_target("java/com/facebook/react/views/view:view"),
         react_native_target("res:modal"),
     ],
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostHelper.java
index cecde6218046c0..8b5ee7fd1f3344 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostHelper.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostShadowNode.java
index 5b63f107dd6b0e..0e0fd429a3f61e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ModalHostShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -23,15 +23,6 @@ class ModalHostShadowNode extends LayoutShadowNode {
 
   public ModalHostShadowNode() {}
 
-  private ModalHostShadowNode(ModalHostShadowNode node) {
-    super(node);
-  }
-
-  @Override
-  protected ModalHostShadowNode copy() {
-    return new ModalHostShadowNode(this);
-  }
-
   /**
    * We need to set the styleWidth and styleHeight of the one child (represented by the <View/>
    * within the <RCTModalHostView/> in Modal.js. This needs to fill the entire window.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostManager.java
index 16df07953b8c2b..283a64f721d2f9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,7 +24,7 @@
 @ReactModule(name = ReactModalHostManager.REACT_CLASS)
 public class ReactModalHostManager extends ViewGroupManager<ReactModalHostView> {
 
-  protected static final String REACT_CLASS = "RCTModalHostView";
+  public static final String REACT_CLASS = "RCTModalHostView";
 
   @Override
   public String getName() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostView.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostView.java
index ab0491fe4619fd..6eeb10aae71fcb 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ReactModalHostView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,7 @@
 
 package com.facebook.react.views.modal;
 
+import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
@@ -15,6 +16,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewStructure;
 import android.view.WindowManager;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.FrameLayout;
@@ -28,6 +30,7 @@
 import com.facebook.react.uimanager.RootView;
 import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.events.EventDispatcher;
+import com.facebook.react.views.common.ContextUtils;
 import com.facebook.react.views.view.ReactViewGroup;
 import java.util.ArrayList;
 import javax.annotation.Nullable;
@@ -72,6 +75,12 @@ public ReactModalHostView(Context context) {
     mHostView = new DialogRootViewGroup(context);
   }
 
+  @TargetApi(23)
+  @Override
+  public void dispatchProvideStructure(ViewStructure structure) {
+    mHostView.dispatchProvideStructure(structure);
+  }
+
   @Override
   protected void onLayout(boolean changed, int l, int t, int r, int b) {
     // Do nothing as we are laid out by UIManager
@@ -123,9 +132,11 @@ public void onDropInstance() {
 
   private void dismiss() {
     if (mDialog != null) {
-      Activity currentActivity = getCurrentActivity();
-      if (mDialog.isShowing() && (currentActivity == null || !currentActivity.isFinishing())) {
-        mDialog.dismiss();
+      if (mDialog.isShowing()) {
+        Activity dialogContext = ContextUtils.findContextOfType(mDialog.getContext(), Activity.class);
+        if (dialogContext == null || !dialogContext.isFinishing()) {
+          mDialog.dismiss();
+        }
       }
       mDialog = null;
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/RequestCloseEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/RequestCloseEvent.java
index ec3129dc8d069d..e8154261b1c0e1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/RequestCloseEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/RequestCloseEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ShowEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ShowEvent.java
index 6e76cb71e66fac..4a89bc8243633a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/modal/ShowEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/modal/ShowEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/picker/BUCK
index a558b5f5101cc6..2b9cfcc3f7e7e2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "picker",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDialogPickerManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDialogPickerManager.java
index 9d0f6c9371a428..b16678ebe40b9d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDialogPickerManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDialogPickerManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,7 +18,7 @@
 @ReactModule(name = ReactDialogPickerManager.REACT_CLASS)
 public class ReactDialogPickerManager extends ReactPickerManager {
 
-  protected static final String REACT_CLASS = "AndroidDialogPicker";
+  public static final String REACT_CLASS = "AndroidDialogPicker";
 
   @Override
   public String getName() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDropdownPickerManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDropdownPickerManager.java
index e099e467de8962..e3c25721cb9104 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDropdownPickerManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactDropdownPickerManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,7 +18,7 @@
 @ReactModule(name = ReactDropdownPickerManager.REACT_CLASS)
 public class ReactDropdownPickerManager extends ReactPickerManager {
 
-  protected static final String REACT_CLASS = "AndroidDropdownPicker";
+  public static final String REACT_CLASS = "AndroidDropdownPicker";
 
   @Override
   public String getName() {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPicker.java b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPicker.java
index cb0ee6d4d781ba..4f38fab0109f7b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPicker.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPicker.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPickerManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPickerManager.java
index a8b3fa7d118929..db26da8e0a28e6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPickerManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/ReactPickerManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/picker/events/PickerItemSelectEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/picker/events/PickerItemSelectEvent.java
index 91b15a94539f49..e50b7b3ad50ef0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/picker/events/PickerItemSelectEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/picker/events/PickerItemSelectEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/BUCK
index 83b2f43751daeb..54afb8816c9e3c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "progressbar",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarContainerView.java b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarContainerView.java
index e1d8f6fe0b58e6..2aa39dc8bb8bd5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarContainerView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarContainerView.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarShadowNode.java
index d18466e58af9c7..e6cb2adceae637 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ProgressBarShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,23 +7,19 @@
 
 package com.facebook.react.views.progressbar;
 
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
-import javax.annotation.Nullable;
-
-import java.util.HashSet;
-import java.util.Set;
-
 import android.util.SparseIntArray;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ProgressBar;
-
-import com.facebook.yoga.YogaMeasureMode;
-import com.facebook.yoga.YogaMeasureFunction;
-import com.facebook.yoga.YogaNode;
-import com.facebook.yoga.YogaMeasureOutput;
 import com.facebook.react.uimanager.LayoutShadowNode;
 import com.facebook.react.uimanager.annotations.ReactProp;
+import com.facebook.yoga.YogaMeasureFunction;
+import com.facebook.yoga.YogaMeasureMode;
+import com.facebook.yoga.YogaMeasureOutput;
+import com.facebook.yoga.YogaNode;
+import java.util.HashSet;
+import java.util.Set;
+import javax.annotation.Nullable;
 
 /**
  * Node responsible for holding the style of the ProgressBar, see under
@@ -45,36 +41,10 @@ public ProgressBarShadowNode() {
     initMeasureFunction();
   }
 
-  public ProgressBarShadowNode(ProgressBarShadowNode node) {
-    super(node);
-    mWidth = node.mWidth.clone();
-    mHeight = node.mHeight.clone();
-    mMeasured = new HashSet<>(node.mMeasured);
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopyWithNewChildren(long instanceHandle) {
-    ProgressBarShadowNode node = (ProgressBarShadowNode) super.mutableCopyWithNewChildren(instanceHandle);
-    node.initMeasureFunction();
-    return node;
-  }
-
   private void initMeasureFunction() {
     setMeasureFunction(this);
   }
 
-  @Override
-  public ReactShadowNodeImpl mutableCopy(long instanceHandle) {
-    ProgressBarShadowNode node = (ProgressBarShadowNode) super.mutableCopy(instanceHandle);
-    node.initMeasureFunction();
-    return node;
-  }
-
-  @Override
-  public ProgressBarShadowNode copy() {
-    return new ProgressBarShadowNode(this);
-  }
-
   public @Nullable String getStyle() {
     return mStyle;
   }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ReactProgressBarViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ReactProgressBarViewManager.java
index e35eafe1efd9e0..24b01e9114b212 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ReactProgressBarViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/progressbar/ReactProgressBarViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,7 +29,7 @@
 public class ReactProgressBarViewManager extends
     BaseViewManager<ProgressBarContainerView, ProgressBarShadowNode> {
 
-  protected static final String REACT_CLASS = "AndroidProgressBar";
+  public static final String REACT_CLASS = "AndroidProgressBar";
 
   /* package */ static final String PROP_STYLE = "styleAttr";
   /* package */ static final String PROP_INDETERMINATE = "indeterminate";
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/BUCK
index 247fa4a207e9b7..2a72452d0580a8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "scroll",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/FpsListener.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/FpsListener.java
index 2ce0ae2d5baa8f..607c396833de75 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/FpsListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/FpsListener.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/OnScrollDispatchHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/OnScrollDispatchHelper.java
index b8d0c11158de37..6b90c839b2feb2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/OnScrollDispatchHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/OnScrollDispatchHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerView.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerView.java
index e23e53305a90ab..f387fba4c1795e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerView.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerViewManager.java
index 284f41451f5fae..3189dde8153b86 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerViewManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -14,7 +14,7 @@
 public class ReactHorizontalScrollContainerViewManager
     extends ViewGroupManager<ReactHorizontalScrollContainerView> {
 
-  protected static final String REACT_CLASS = "AndroidHorizontalScrollContentView";
+  public static final String REACT_CLASS = "AndroidHorizontalScrollContentView";
 
   public ReactHorizontalScrollContainerViewManager() {}
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollView.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollView.java
index 7446f1897c9520..38b6b2f3953e01 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -28,10 +28,11 @@
 
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.common.ReactConstants;
+import com.facebook.react.uimanager.events.NativeGestureUtil;
 import com.facebook.react.uimanager.MeasureSpecAssertions;
 import com.facebook.react.uimanager.ReactClippingViewGroup;
 import com.facebook.react.uimanager.ReactClippingViewGroupHelper;
-import com.facebook.react.uimanager.events.NativeGestureUtil;
+import com.facebook.react.uimanager.ViewProps;
 import com.facebook.react.views.view.ReactViewBackgroundManager;
 
 import java.lang.reflect.Field;
@@ -58,6 +59,7 @@ public class ReactHorizontalScrollView extends HorizontalScrollView implements
 
   private boolean mActivelyScrolling;
   private @Nullable Rect mClippingRect;
+  private @Nullable String mOverflow = ViewProps.HIDDEN;
   private boolean mDragging;
   private boolean mPagingEnabled = false;
   private @Nullable Runnable mPostTouchRunnable;
@@ -71,6 +73,8 @@ public class ReactHorizontalScrollView extends HorizontalScrollView implements
   private int mSnapInterval = 0;
   private float mDecelerationRate = 0.985f;
   private @Nullable List<Integer> mSnapOffsets;
+  private boolean mSnapToStart = true;
+  private boolean mSnapToEnd = true;
   private ReactViewBackgroundManager mReactBackgroundManager;
   private boolean mPagedArrowScrolling = false;
 
@@ -173,14 +177,35 @@ public void setSnapOffsets(List<Integer> snapOffsets) {
     mSnapOffsets = snapOffsets;
   }
 
+  public void setSnapToStart(boolean snapToStart) {
+    mSnapToStart = snapToStart;
+  }
+
+  public void setSnapToEnd(boolean snapToEnd) {
+    mSnapToEnd = snapToEnd;
+  }
+
   public void flashScrollIndicators() {
     awakenScrollBars();
   }
 
+  public void setOverflow(String overflow) {
+    mOverflow = overflow;
+    invalidate();
+  }
+
   @Override
   protected void onDraw(Canvas canvas) {
     getDrawingRect(mRect);
-    canvas.clipRect(mRect);
+
+    switch (mOverflow) {
+      case ViewProps.VISIBLE:
+        break;
+      default:
+        canvas.clipRect(mRect);
+        break;
+    }
+
     super.onDraw(canvas);
   }
 
@@ -385,8 +410,18 @@ public boolean onTouchEvent(MotionEvent ev) {
 
   @Override
   public void fling(int velocityX) {
+
+    // Workaround.
+    // On Android P if a ScrollView is inverted, we will get a wrong sign for
+    // velocityX (see https://issuetracker.google.com/issues/112385925). 
+    // At the same time, mOnScrollDispatchHelper tracks the correct velocity direction. 
+    //
+    // Hence, we can use the absolute value from whatever the OS gives
+    // us and use the sign of what mOnScrollDispatchHelper has tracked.
+    final int correctedVelocityX = (int)(Math.abs(velocityX) * Math.signum(mOnScrollDispatchHelper.getXFlingVelocity()));
+
     if (mPagingEnabled) {
-      flingAndSnap(velocityX);
+      flingAndSnap(correctedVelocityX);
     } else if (mScroller != null) {
       // FB SCROLLVIEW CHANGE
 
@@ -401,7 +436,7 @@ public void fling(int velocityX) {
       mScroller.fling(
         getScrollX(), // startX
         getScrollY(), // startY
-        velocityX, // velocityX
+        correctedVelocityX, // velocityX
         0, // velocityY
         0, // minX
         Integer.MAX_VALUE, // maxX
@@ -415,9 +450,9 @@ public void fling(int velocityX) {
 
       // END FB SCROLLVIEW CHANGE
     } else {
-      super.fling(velocityX);
+      super.fling(correctedVelocityX);
     }
-    handlePostTouchScrolling(velocityX, 0);
+    handlePostTouchScrolling(correctedVelocityX, 0);
   }
 
   @Override
@@ -685,6 +720,9 @@ private void flingAndSnap(int velocityX) {
 
     // get the nearest snap points to the target offset
     if (mSnapOffsets != null) {
+      firstOffset = mSnapOffsets.get(0);
+      lastOffset = mSnapOffsets.get(mSnapOffsets.size() - 1);
+
       for (int i = 0; i < mSnapOffsets.size(); i ++) {
         int offset = mSnapOffsets.get(i);
 
@@ -704,7 +742,7 @@ private void flingAndSnap(int velocityX) {
       double interval = (double) getSnapInterval();
       double ratio = (double) targetOffset / interval;
       smallerOffset = (int) (Math.floor(ratio) * interval);
-      largerOffset = (int) (Math.ceil(ratio) * interval);
+      largerOffset = Math.min((int) (Math.ceil(ratio) * interval), maximumOffset);
     }
 
     // Calculate the nearest offset
@@ -712,10 +750,34 @@ private void flingAndSnap(int velocityX) {
       ? smallerOffset
       : largerOffset;
 
-    // Chose the correct snap offset based on velocity
-    if (velocityX > 0) {
+    // if scrolling after the last snap offset and snapping to the
+    // end of the list is disabled, then we allow free scrolling
+    int currentOffset = getScrollX();
+    if (isRTL) {
+      currentOffset = maximumOffset - currentOffset;
+    }
+    if (!mSnapToEnd && targetOffset >= lastOffset) {
+      if (currentOffset >= lastOffset) {
+        // free scrolling
+      } else {
+        // snap to end
+        targetOffset = lastOffset;
+      }
+    } else if (!mSnapToStart && targetOffset <= firstOffset) {
+      if (currentOffset <= firstOffset) {
+        // free scrolling
+      } else {
+        // snap to beginning
+        targetOffset = firstOffset;
+      }
+    } else if (velocityX > 0) {
+      // when snapping velocity can feel sluggish for slow swipes
+      velocityX += (int) ((largerOffset - targetOffset) * 10.0);
+
       targetOffset = largerOffset;
     } else if (velocityX < 0) {
+      // when snapping velocity can feel sluggish for slow swipes
+      velocityX -= (int) ((targetOffset - smallerOffset) * 10.0);
       targetOffset = smallerOffset;
     } else {
       targetOffset = nearestOffset;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollViewManager.java
index 2f65a7c8922579..5ea8096ff21276 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -39,7 +39,7 @@ public class ReactHorizontalScrollViewManager
     extends ViewGroupManager<ReactHorizontalScrollView>
     implements ReactScrollViewCommandHelper.ScrollCommandHandler<ReactHorizontalScrollView> {
 
-  protected static final String REACT_CLASS = "AndroidHorizontalScrollView";
+  public static final String REACT_CLASS = "AndroidHorizontalScrollView";
 
   private static final int[] SPACING_TYPES = {
       Spacing.ALL, Spacing.LEFT, Spacing.RIGHT, Spacing.TOP, Spacing.BOTTOM,
@@ -97,6 +97,16 @@ public void setSnapToOffsets(ReactHorizontalScrollView view, @Nullable ReadableA
     view.setSnapOffsets(offsets);
   }
 
+  @ReactProp(name = "snapToStart")
+  public void setSnapToStart(ReactHorizontalScrollView view, boolean snapToStart) {
+    view.setSnapToStart(snapToStart);
+  }
+
+  @ReactProp(name = "snapToEnd")
+  public void setSnapToEnd(ReactHorizontalScrollView view, boolean snapToEnd) {
+    view.setSnapToEnd(snapToEnd);
+  }
+
   @ReactProp(name = ReactClippingViewGroupHelper.PROP_REMOVE_CLIPPED_SUBVIEWS)
   public void setRemoveClippedSubviews(ReactHorizontalScrollView view, boolean removeClippedSubviews) {
     view.setRemoveClippedSubviews(removeClippedSubviews);
@@ -240,4 +250,9 @@ public void setBorderColor(ReactHorizontalScrollView view, int index, Integer co
     float alphaComponent = color == null ? YogaConstants.UNDEFINED : (float) ((int)color >>> 24);
     view.setBorderColor(SPACING_TYPES[index], rgbComponent, alphaComponent);
   }
+
+  @ReactProp(name = "overflow")
+  public void setOverflow(ReactHorizontalScrollView view, @Nullable String overflow) {
+    view.setOverflow(overflow);
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollView.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollView.java
index 3102172f6af71b..3a828bc9646b04 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,10 +24,11 @@
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.ReactContext;
 import com.facebook.react.common.ReactConstants;
+import com.facebook.react.uimanager.events.NativeGestureUtil;
 import com.facebook.react.uimanager.MeasureSpecAssertions;
 import com.facebook.react.uimanager.ReactClippingViewGroup;
 import com.facebook.react.uimanager.ReactClippingViewGroupHelper;
-import com.facebook.react.uimanager.events.NativeGestureUtil;
+import com.facebook.react.uimanager.ViewProps;
 import com.facebook.react.views.view.ReactViewBackgroundManager;
 
 import java.lang.reflect.Field;
@@ -54,6 +55,7 @@ public class ReactScrollView extends ScrollView implements ReactClippingViewGrou
 
   private boolean mActivelyScrolling;
   private @Nullable Rect mClippingRect;
+  private @Nullable String mOverflow = ViewProps.HIDDEN;
   private boolean mDragging;
   private boolean mPagingEnabled = false;
   private @Nullable Runnable mPostTouchRunnable;
@@ -67,6 +69,8 @@ public class ReactScrollView extends ScrollView implements ReactClippingViewGrou
   private int mSnapInterval = 0;
   private float mDecelerationRate = 0.985f;
   private @Nullable List<Integer> mSnapOffsets;
+  private boolean mSnapToStart = true;
+  private boolean mSnapToEnd = true;
   private View mContentView;
   private ReactViewBackgroundManager mReactBackgroundManager;
 
@@ -155,10 +159,23 @@ public void setSnapOffsets(List<Integer> snapOffsets) {
     mSnapOffsets = snapOffsets;
   }
 
+  public void setSnapToStart(boolean snapToStart) {
+    mSnapToStart = snapToStart;
+  }
+
+  public void setSnapToEnd(boolean snapToEnd) {
+    mSnapToEnd = snapToEnd;
+  }
+
   public void flashScrollIndicators() {
     awakenScrollBars();
   }
 
+  public void setOverflow(String overflow) {
+    mOverflow = overflow;
+    invalidate();
+  }
+
   @Override
   protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     MeasureSpecAssertions.assertExplicitMeasureSpec(widthMeasureSpec, heightMeasureSpec);
@@ -321,8 +338,18 @@ public void getClippingRect(Rect outClippingRect) {
 
   @Override
   public void fling(int velocityY) {
+    // Workaround.
+    // On Android P if a ScrollView is inverted, we will get a wrong sign for
+    // velocityY (see https://issuetracker.google.com/issues/112385925). 
+    // At the same time, mOnScrollDispatchHelper tracks the correct velocity direction. 
+    //
+    // Hence, we can use the absolute value from whatever the OS gives
+    // us and use the sign of what mOnScrollDispatchHelper has tracked.
+    final int correctedVelocityY = (int)(Math.abs(velocityY) * Math.signum(mOnScrollDispatchHelper.getYFlingVelocity()));
+
+
     if (mPagingEnabled) {
-      flingAndSnap(velocityY);
+      flingAndSnap(correctedVelocityY);
     } else if (mScroller != null) {
       // FB SCROLLVIEW CHANGE
 
@@ -338,7 +365,7 @@ public void fling(int velocityY) {
         getScrollX(), // startX
         getScrollY(), // startY
         0, // velocityX
-        velocityY, // velocityY
+        correctedVelocityY, // velocityY
         0, // minX
         0, // maxX
         0, // minY
@@ -351,9 +378,9 @@ public void fling(int velocityY) {
 
       // END FB SCROLLVIEW CHANGE
     } else {
-      super.fling(velocityY);
+      super.fling(correctedVelocityY);
     }
-    handlePostTouchScrolling(0, velocityY);
+    handlePostTouchScrolling(0, correctedVelocityY);
   }
 
   private void enableFpsListener() {
@@ -392,7 +419,15 @@ public void draw(Canvas canvas) {
       }
     }
     getDrawingRect(mRect);
-    canvas.clipRect(mRect);
+
+    switch (mOverflow) {
+      case ViewProps.VISIBLE:
+        break;
+      default:
+        canvas.clipRect(mRect);
+        break;
+    }
+
     super.draw(canvas);
   }
 
@@ -551,6 +586,9 @@ private void flingAndSnap(int velocityY) {
 
     // get the nearest snap points to the target offset
     if (mSnapOffsets != null) {
+      firstOffset = mSnapOffsets.get(0);
+      lastOffset = mSnapOffsets.get(mSnapOffsets.size() - 1);
+
       for (int i = 0; i < mSnapOffsets.size(); i ++) {
         int offset = mSnapOffsets.get(i);
 
@@ -570,7 +608,7 @@ private void flingAndSnap(int velocityY) {
       double interval = (double) getSnapInterval();
       double ratio = (double) targetOffset / interval;
       smallerOffset = (int) (Math.floor(ratio) * interval);
-      largerOffset = (int) (Math.ceil(ratio) * interval);
+      largerOffset = Math.min((int) (Math.ceil(ratio) * interval), maximumOffset);
     }
 
     // Calculate the nearest offset
@@ -578,10 +616,31 @@ private void flingAndSnap(int velocityY) {
       ? smallerOffset
       : largerOffset;
 
-    // Chose the correct snap offset based on velocity
-    if (velocityY > 0) {
+    // if scrolling after the last snap offset and snapping to the
+    // end of the list is disabled, then we allow free scrolling
+    if (!mSnapToEnd && targetOffset >= lastOffset) {
+      if (getScrollY() >= lastOffset) {
+        // free scrolling
+      } else {
+        // snap to end
+        targetOffset = lastOffset;
+      }
+    } else if (!mSnapToStart && targetOffset <= firstOffset) {
+      if (getScrollY() <= firstOffset) {
+        // free scrolling
+      } else {
+        // snap to beginning
+        targetOffset = firstOffset;
+      }
+    } else if (velocityY > 0) {
+      // when snapping velocity can feel sluggish for slow swipes
+      velocityY += (int) ((largerOffset - targetOffset) * 10.0);
+
       targetOffset = largerOffset;
     } else if (velocityY < 0) {
+      // when snapping velocity can feel sluggish for slow swipes
+      velocityY -= (int) ((targetOffset - smallerOffset) * 10.0);
+
       targetOffset = smallerOffset;
     } else {
       targetOffset = nearestOffset;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewCommandHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewCommandHelper.java
index 7eaa06386d5b71..eb5989be48c68c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewCommandHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewCommandHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewHelper.java
index 9d6f51d058c9c4..1e8cdae053f427 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewManager.java
index 3dfd1580419785..5209902cc932c0 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -43,7 +43,7 @@ public class ReactScrollViewManager
     extends ViewGroupManager<ReactScrollView>
     implements ReactScrollViewCommandHelper.ScrollCommandHandler<ReactScrollView> {
 
-  protected static final String REACT_CLASS = "RCTScrollView";
+  public static final String REACT_CLASS = "RCTScrollView";
 
   private static final int[] SPACING_TYPES = {
       Spacing.ALL, Spacing.LEFT, Spacing.RIGHT, Spacing.TOP, Spacing.BOTTOM,
@@ -105,6 +105,16 @@ public void setSnapToOffsets(ReactScrollView view, @Nullable ReadableArray snapT
     view.setSnapOffsets(offsets);
   }
 
+  @ReactProp(name = "snapToStart")
+  public void setSnapToStart(ReactScrollView view, boolean snapToStart) {
+    view.setSnapToStart(snapToStart);
+  }
+
+  @ReactProp(name = "snapToEnd")
+  public void setSnapToEnd(ReactScrollView view, boolean snapToEnd) {
+    view.setSnapToEnd(snapToEnd);
+  }
+
   @ReactProp(name = ReactClippingViewGroupHelper.PROP_REMOVE_CLIPPED_SUBVIEWS)
   public void setRemoveClippedSubviews(ReactScrollView view, boolean removeClippedSubviews) {
     view.setRemoveClippedSubviews(removeClippedSubviews);
@@ -239,6 +249,11 @@ public void setBorderColor(ReactScrollView view, int index, Integer color) {
     view.setBorderColor(SPACING_TYPES[index], rgbComponent, alphaComponent);
   }
 
+  @ReactProp(name = "overflow")
+  public void setOverflow(ReactScrollView view, @Nullable String overflow) {
+    view.setOverflow(overflow);
+  }
+
   @Override
   public void scrollToEnd(
       ReactScrollView scrollView,
@@ -260,11 +275,11 @@ public void scrollToEnd(
 
   public static Map<String, Object> createExportedCustomDirectEventTypeConstants() {
     return MapBuilder.<String, Object>builder()
-        .put(ScrollEventType.SCROLL.getJSEventName(), MapBuilder.of("registrationName", "onScroll"))
-        .put(ScrollEventType.BEGIN_DRAG.getJSEventName(), MapBuilder.of("registrationName", "onScrollBeginDrag"))
-        .put(ScrollEventType.END_DRAG.getJSEventName(), MapBuilder.of("registrationName", "onScrollEndDrag"))
-        .put(ScrollEventType.MOMENTUM_BEGIN.getJSEventName(), MapBuilder.of("registrationName", "onMomentumScrollBegin"))
-        .put(ScrollEventType.MOMENTUM_END.getJSEventName(), MapBuilder.of("registrationName", "onMomentumScrollEnd"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.SCROLL), MapBuilder.of("registrationName", "onScroll"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.BEGIN_DRAG), MapBuilder.of("registrationName", "onScrollBeginDrag"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.END_DRAG), MapBuilder.of("registrationName", "onScrollEndDrag"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.MOMENTUM_BEGIN), MapBuilder.of("registrationName", "onMomentumScrollBegin"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.MOMENTUM_END), MapBuilder.of("registrationName", "onMomentumScrollEnd"))
         .build();
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEvent.java
index bf3da944d4773e..cdc129a8ff23df 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -100,7 +100,7 @@ private void init(
 
   @Override
   public String getEventName() {
-    return Assertions.assertNotNull(mScrollEventType).getJSEventName();
+    return ScrollEventType.getJSEventName(Assertions.assertNotNull(mScrollEventType));
   }
 
   @Override
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEventType.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEventType.java
index 5a3810d035b3a9..d51de786174e71 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEventType.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ScrollEventType.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,19 +11,26 @@
  * Scroll event types that JS module RCTEventEmitter can understand
  */
 public enum ScrollEventType {
-  BEGIN_DRAG("topScrollBeginDrag"),
-  END_DRAG("topScrollEndDrag"),
-  SCROLL("topScroll"),
-  MOMENTUM_BEGIN("topMomentumScrollBegin"),
-  MOMENTUM_END("topMomentumScrollEnd");
+  BEGIN_DRAG,
+  END_DRAG,
+  SCROLL,
+  MOMENTUM_BEGIN,
+  MOMENTUM_END;
 
-  private final String mJSEventName;
-
-  ScrollEventType(String jsEventName) {
-    mJSEventName = jsEventName;
-  }
-
-  public String getJSEventName() {
-    return mJSEventName;
+  public static String getJSEventName(ScrollEventType type) {
+    switch (type) {
+      case BEGIN_DRAG:
+        return "topScrollBeginDrag";
+      case END_DRAG:
+        return "topScrollEndDrag";
+      case SCROLL:
+        return "topScroll";
+      case MOMENTUM_BEGIN:
+        return "topMomentumScrollBegin";
+      case MOMENTUM_END:
+        return "topMomentumScrollEnd";
+      default:
+        throw new IllegalArgumentException("Unsupported ScrollEventType: " + type);
+    }
   }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/VelocityHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/VelocityHelper.java
index 5972b25632a189..8260fa675cecf3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/scroll/VelocityHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/scroll/VelocityHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/slider/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/slider/BUCK
index a034f695b5d64d..50e606647ea0da 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/slider/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/slider/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "slider",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlider.java b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlider.java
index 644be5c0bfc6cc..5d2e39bbcdd233 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlider.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlider.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderEvent.java
index dabb326a530407..504da715584d3d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderManager.java
index 4111ce3b2ea61c..84066b5d1bbf52 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSliderManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -38,7 +38,7 @@ public class ReactSliderManager extends SimpleViewManager<ReactSlider> {
 
   private static final int STYLE = android.R.attr.seekBarStyle;
 
-  private static final String REACT_CLASS = "RCTSlider";
+  public static final String REACT_CLASS = "RCTSlider";
 
   static class ReactSliderShadowNode extends LayoutShadowNode implements
       YogaMeasureFunction {
@@ -51,36 +51,10 @@ private ReactSliderShadowNode() {
       initMeasureFunction();
     }
 
-    private ReactSliderShadowNode(ReactSliderShadowNode node) {
-      super(node);
-      mWidth = node.mWidth;
-      mHeight = node.mHeight;
-      mMeasured = node.mMeasured;
-    }
-
     private void initMeasureFunction() {
       setMeasureFunction(this);
     }
 
-    @Override
-    public ReactShadowNodeImpl mutableCopy(long instanceHandle) {
-      ReactSliderShadowNode reactShadowNode = (ReactSliderShadowNode) super.mutableCopy(instanceHandle);
-      reactShadowNode.initMeasureFunction();
-      return reactShadowNode;
-    }
-
-    @Override
-    public ReactShadowNodeImpl mutableCopyWithNewChildren(long instanceHandle) {
-      ReactSliderShadowNode reactShadowNode = (ReactSliderShadowNode) super.mutableCopyWithNewChildren(instanceHandle);
-      reactShadowNode.initMeasureFunction();
-      return reactShadowNode;
-    }
-
-    @Override
-    protected ReactSliderShadowNode copy() {
-      return new ReactSliderShadowNode(this);
-    }
-
     @Override
     public long measure(
         YogaNode node,
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlidingCompleteEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlidingCompleteEvent.java
index 37553abaf22c2b..5534b3b55f4d97 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlidingCompleteEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/slider/ReactSlidingCompleteEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/BUCK
index af67f891b3a49a..6bc4c1ae773d7a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "swiperefresh",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/ReactSwipeRefreshLayout.java b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/ReactSwipeRefreshLayout.java
index 2512b2b21c415e..adc43971ccea8f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/ReactSwipeRefreshLayout.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/ReactSwipeRefreshLayout.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/RefreshEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/RefreshEvent.java
index c03b4a11dc3858..dc3cfb9c2054e6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/RefreshEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/RefreshEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/SwipeRefreshLayoutManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/SwipeRefreshLayoutManager.java
index ab551d9436cc58..d808433135f2c3 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/SwipeRefreshLayoutManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/swiperefresh/SwipeRefreshLayoutManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -31,7 +31,7 @@
 @ReactModule(name = REACT_CLASS)
 public class SwipeRefreshLayoutManager extends ViewGroupManager<ReactSwipeRefreshLayout> {
 
-  protected static final String REACT_CLASS = "AndroidSwipeRefreshLayout";
+  public static final String REACT_CLASS = "AndroidSwipeRefreshLayout";
 
   @Override
   protected ReactSwipeRefreshLayout createViewInstance(ThemedReactContext reactContext) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/BUCK
index 1bafa2f20020a7..cb5257ca5fe519 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "switchview",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitch.java b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitch.java
index 3c9dc82b848a5e..7dd9f3d0e19a0c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitch.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitch.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchEvent.java
index 75dfe794499e32..019a7b7291dad4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchManager.java
index 0d802c13c45bcf..ead1d5acccdd4b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/switchview/ReactSwitchManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -44,36 +44,10 @@ private ReactSwitchShadowNode() {
       initMeasureFunction();
     }
 
-    private ReactSwitchShadowNode(ReactSwitchShadowNode node) {
-      super(node);
-      mWidth = node.mWidth;
-      mHeight = node.mHeight;
-      mMeasured = node.mMeasured;
-    }
-
     private void initMeasureFunction() {
       setMeasureFunction(this);
     }
 
-    @Override
-    public ReactShadowNodeImpl mutableCopy(long instanceHandle) {
-      ReactSwitchShadowNode reactShadowNode = (ReactSwitchShadowNode) super.mutableCopy(instanceHandle);
-      reactShadowNode.initMeasureFunction();
-      return reactShadowNode;
-    }
-
-    @Override
-    public ReactShadowNodeImpl mutableCopyWithNewChildren(long instanceHandle) {
-      ReactSwitchShadowNode reactShadowNode = (ReactSwitchShadowNode) super.mutableCopyWithNewChildren(instanceHandle);
-      reactShadowNode.initMeasureFunction();
-      return reactShadowNode;
-    }
-
-    @Override
-    protected ReactSwitchShadowNode copy() {
-      return new ReactSwitchShadowNode(this);
-    }
-
     @Override
     public long measure(
         YogaNode node,
@@ -88,7 +62,7 @@ public long measure(
         ReactSwitch reactSwitch = new ReactSwitch(getThemedContext());
         reactSwitch.setShowText(false);
         final int spec = View.MeasureSpec.makeMeasureSpec(
-            ViewGroup.LayoutParams.WRAP_CONTENT,
+            0,
             View.MeasureSpec.UNSPECIFIED);
         reactSwitch.measure(spec, spec);
         mWidth = reactSwitch.getMeasuredWidth();
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/text/BUCK
index 1b5c6c6fff7d3f..a4b6e0c3bab668 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "text",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLetterSpacingSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLetterSpacingSpan.java
index d41338ccd93664..699e406bf19eec 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLetterSpacingSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLetterSpacingSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
index ed72dfa9b13d5e..2205a04b673505 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomLineHeightSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomStyleSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomStyleSpan.java
index 3138ed85449725..11246162e5d08c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomStyleSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomStyleSpan.java
@@ -1,5 +1,6 @@
+
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -49,6 +50,18 @@ public CustomStyleSpan(
     mAssetManager = assetManager;
   }
 
+  public CustomStyleSpan(
+      int fontStyle,
+      int fontWeight,
+      @Nullable String fontFamily,
+      AssetManager assetManager) {
+    mStyle = fontStyle;
+    mWeight = fontWeight;
+    mFontFamily = fontFamily;
+    mFontPath = null;
+    mAssetManager = assetManager;
+  }
+
   @Override
   public void updateDrawState(TextPaint ds) {
     apply(ds, mStyle, mWeight, mFontFamily, mFontPath, mAssetManager);
@@ -127,6 +140,7 @@ private static void apply(
     } else {
       paint.setTypeface(Typeface.defaultFromStyle(want));
     }
+    paint.setSubpixelText(true);
   }
 
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomTextTransformSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomTextTransformSpan.java
new file mode 100644
index 00000000000000..20cc73cdad9b32
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/CustomTextTransformSpan.java
@@ -0,0 +1,83 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text;
+
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.text.style.ReplacementSpan;
+import java.text.BreakIterator;
+
+public class CustomTextTransformSpan extends ReplacementSpan {
+
+  /**
+   * A {@link ReplacementSpan} that allows declarative changing of text casing.
+   * CustomTextTransformSpan will change e.g. "foo" to "FOO", when passed UPPERCASE.
+   *
+   * This needs to be a Span in order to achieve correctly nested transforms
+   * (for Text nodes within Text nodes, each with separate needed transforms)
+   */
+
+  private final TextTransform mTransform;
+
+  public CustomTextTransformSpan(TextTransform transform) {
+    mTransform = transform;
+  }
+
+  @Override
+  public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {
+    CharSequence transformedText = transformText(text);
+    canvas.drawText(transformedText, start, end, x, y, paint);
+  }
+
+	@Override
+  public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) {
+    CharSequence transformedText = transformText(text);
+    return Math.round(paint.measureText(transformedText, start, end));
+  }
+
+  private CharSequence transformText(CharSequence text) {
+    CharSequence transformed;
+
+    switch(mTransform) {
+      case UPPERCASE:
+        transformed = (CharSequence) text.toString().toUpperCase();
+        break;
+      case LOWERCASE:
+       transformed = (CharSequence) text.toString().toLowerCase();
+       break;
+      case CAPITALIZE:
+       transformed = (CharSequence) capitalize(text.toString());
+       break;
+      default:
+        transformed = text;
+    }
+
+    return transformed;
+  }
+
+  private String capitalize(String text) {
+    BreakIterator wordIterator = BreakIterator.getWordInstance();
+    wordIterator.setText(text);
+
+    StringBuilder res = new StringBuilder(text.length());
+    int start = wordIterator.first();
+    for (int end = wordIterator.next(); end != BreakIterator.DONE; end = wordIterator.next()) {
+      String word = text.substring(start, end);
+      if (Character.isLetterOrDigit(word.charAt(0))) {
+        res.append(Character.toUpperCase(word.charAt(0)));
+        res.append(word.substring(1).toLowerCase());
+      } else {
+        res.append(word);
+      }
+      start = end;
+    }
+
+    return res.toString();
+  }
+
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/DefaultStyleValuesUtil.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/DefaultStyleValuesUtil.java
index 92bfe2511aa566..9e248833d374bd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/DefaultStyleValuesUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/DefaultStyleValuesUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/FontMetricsUtil.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/FontMetricsUtil.java
new file mode 100644
index 00000000000000..419985323c3f2c
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/FontMetricsUtil.java
@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.text.Layout;
+import android.text.TextPaint;
+import android.util.DisplayMetrics;
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableMap;
+
+public class FontMetricsUtil {
+
+  private static final String CAP_HEIGHT_MEASUREMENT_TEXT = "T";
+  private static final String X_HEIGHT_MEASUREMENT_TEXT = "x";
+  private static final float AMPLIFICATION_FACTOR = 100;
+
+  public static WritableArray getFontMetrics(CharSequence text, Layout layout, TextPaint paint, Context context) {
+    DisplayMetrics dm = context.getResources().getDisplayMetrics();
+    WritableArray lines = Arguments.createArray();
+    // To calculate xHeight and capHeight we have to render an "x" and "T" and manually measure their height.
+    // In order to get more precision than Android offers, we blow up the text size by 100 and measure it.
+    // Luckily, text size affects rendering linearly, so we can do this trick.
+    TextPaint paintCopy = new TextPaint(paint);
+    paintCopy.setTextSize(paintCopy.getTextSize() * AMPLIFICATION_FACTOR);
+    Rect capHeightBounds = new Rect();
+    paintCopy.getTextBounds(CAP_HEIGHT_MEASUREMENT_TEXT, 0, CAP_HEIGHT_MEASUREMENT_TEXT.length(), capHeightBounds);
+    double capHeight = capHeightBounds.height() / AMPLIFICATION_FACTOR / dm.density;
+    Rect xHeightBounds = new Rect();
+    paintCopy.getTextBounds(X_HEIGHT_MEASUREMENT_TEXT, 0, X_HEIGHT_MEASUREMENT_TEXT.length(), xHeightBounds);
+    double xHeight = xHeightBounds.height() / AMPLIFICATION_FACTOR / dm.density;
+    for (int i = 0; i < layout.getLineCount(); i++) {
+      Rect bounds = new Rect();
+      layout.getLineBounds(i, bounds);
+      WritableMap line = Arguments.createMap();
+      line.putDouble("x", layout.getLineLeft(i) / dm.density);
+      line.putDouble("y", bounds.top / dm.density);
+      line.putDouble("width", layout.getLineWidth(i) / dm.density);
+      line.putDouble("height", bounds.height() / dm.density);
+      line.putDouble("descender", layout.getLineDescent(i) / dm.density);
+      line.putDouble("ascender", -layout.getLineAscent(i) / dm.density);
+      line.putDouble("baseline", layout.getLineBaseline(i) / dm.density);
+      line.putDouble("capHeight", capHeight);
+      line.putDouble("xHeight", xHeight);
+      line.putString(
+          "text", text.subSequence(layout.getLineStart(i), layout.getLineEnd(i)).toString());
+      lines.pushMap(line);
+    }
+    return lines;
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
index d5e3083c3974fa..43a8212c8a3b71 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
@@ -1,11 +1,12 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 package com.facebook.react.views.text;
 
+import android.graphics.Color;
 import android.graphics.Typeface;
 import android.os.Build;
 import android.text.Layout;
@@ -52,6 +53,8 @@ public abstract class ReactBaseTextShadowNode extends LayoutShadowNode {
   public static final String PROP_SHADOW_RADIUS = "textShadowRadius";
   public static final String PROP_SHADOW_COLOR = "textShadowColor";
 
+  public static final String PROP_TEXT_TRANSFORM = "textTransform";
+
   public static final int DEFAULT_TEXT_SHADOW_COLOR = 0x55000000;
 
   private static class SetSpanOperation {
@@ -150,7 +153,14 @@ private static void buildSpannedFromShadowNode(
       if (textShadowNode.mIsLineThroughTextDecorationSet) {
         ops.add(new SetSpanOperation(start, end, new StrikethroughSpan()));
       }
-      if (textShadowNode.mTextShadowOffsetDx != 0 || textShadowNode.mTextShadowOffsetDy != 0) {
+      if (
+        (
+          textShadowNode.mTextShadowOffsetDx != 0 ||
+          textShadowNode.mTextShadowOffsetDy != 0 ||
+          textShadowNode.mTextShadowRadius != 0
+        ) &&
+        Color.alpha(textShadowNode.mTextShadowColor) != 0
+      ) {
         ops.add(
             new SetSpanOperation(
                 start,
@@ -166,10 +176,22 @@ private static void buildSpannedFromShadowNode(
             new SetSpanOperation(
                 start, end, new CustomLineHeightSpan(textShadowNode.getEffectiveLineHeight())));
       }
+      if (textShadowNode.mTextTransform != TextTransform.UNSET) {
+        ops.add(
+          new SetSpanOperation(
+            start,
+            end,
+            new CustomTextTransformSpan(textShadowNode.mTextTransform)));
+      }
       ops.add(new SetSpanOperation(start, end, new ReactTagSpan(textShadowNode.getReactTag())));
     }
   }
 
+  protected int getDefaultFontSize() {
+    return mAllowFontScaling ? (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP))
+      : (int) Math.ceil(PixelUtil.toPixelFromDIP(ViewDefaults.FONT_SIZE_SP));
+  }
+
   protected static Spannable spannedFromShadowNode(
       ReactBaseTextShadowNode textShadowNode, String text) {
     SpannableStringBuilder sb = new SpannableStringBuilder();
@@ -188,10 +210,7 @@ protected static Spannable spannedFromShadowNode(
     }
 
     if (textShadowNode.mFontSize == UNSET) {
-      int defaultFontSize =
-          textShadowNode.mAllowFontScaling
-              ? (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP))
-              : (int) Math.ceil(PixelUtil.toPixelFromDIP(ViewDefaults.FONT_SIZE_SP));
+      int defaultFontSize = textShadowNode.getDefaultFontSize();
 
       ops.add(new SetSpanOperation(0, sb.length(), new AbsoluteSizeSpan(defaultFontSize)));
     }
@@ -253,10 +272,11 @@ private static int parseNumericFontWeight(String fontWeightString) {
   protected int mTextAlign = Gravity.NO_GRAVITY;
   protected int mTextBreakStrategy =
       (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) ? 0 : Layout.BREAK_STRATEGY_HIGH_QUALITY;
+  protected TextTransform mTextTransform = TextTransform.UNSET;
 
   protected float mTextShadowOffsetDx = 0;
   protected float mTextShadowOffsetDy = 0;
-  protected float mTextShadowRadius = 1;
+  protected float mTextShadowRadius = 0;
   protected int mTextShadowColor = DEFAULT_TEXT_SHADOW_COLOR;
 
   protected boolean mIsUnderlineTextDecorationSet = false;
@@ -295,37 +315,6 @@ private static int parseNumericFontWeight(String fontWeightString) {
 
   public ReactBaseTextShadowNode() {}
 
-  public ReactBaseTextShadowNode(ReactBaseTextShadowNode node) {
-    super(node);
-    mLineHeight = node.mLineHeight;
-    mIsColorSet = node.mIsColorSet;
-    mAllowFontScaling = node.mAllowFontScaling;
-    mColor = node.mColor;
-    mIsBackgroundColorSet = node.mIsBackgroundColorSet;
-    mBackgroundColor = node.mBackgroundColor;
-
-    mNumberOfLines = node.mNumberOfLines;
-    mFontSize = node.mFontSize;
-    mFontSizeInput = node.mFontSizeInput;
-    mLineHeightInput = node.mLineHeightInput;
-    mTextAlign = node.mTextAlign;
-    mTextBreakStrategy = node.mTextBreakStrategy;
-
-    mTextShadowOffsetDx = node.mTextShadowOffsetDx;
-    mTextShadowOffsetDy = node.mTextShadowOffsetDy;
-    mTextShadowRadius = node.mTextShadowRadius;
-    mTextShadowColor = node.mTextShadowColor;
-
-    mIsUnderlineTextDecorationSet = node.mIsUnderlineTextDecorationSet;
-    mIsLineThroughTextDecorationSet = node.mIsLineThroughTextDecorationSet;
-    mIncludeFontPadding = node.mIncludeFontPadding;
-    mFontStyle = node.mFontStyle;
-    mFontWeight = node.mFontWeight;
-    mFontFamily = node.mFontFamily;
-    mContainsImages = node.mContainsImages;
-    mHeightOfTallestInlineImage = node.mHeightOfTallestInlineImage;
-  }
-
   // Returns a line height which takes into account the requested line height
   // and the height of the inline images.
   public float getEffectiveLineHeight() {
@@ -570,4 +559,20 @@ public void setTextShadowColor(int textShadowColor) {
       markUpdated();
     }
   }
+
+  @ReactProp(name = PROP_TEXT_TRANSFORM)
+  public void setTextTransform(@Nullable String textTransform) {
+    if (textTransform == null || "none".equals(textTransform)) {
+      mTextTransform = TextTransform.NONE;
+    } else if ("uppercase".equals(textTransform)) {
+      mTextTransform = TextTransform.UPPERCASE;
+    } else if ("lowercase".equals(textTransform)) {
+      mTextTransform = TextTransform.LOWERCASE;
+    } else if ("capitalize".equals(textTransform)) {
+      mTextTransform = TextTransform.CAPITALIZE;
+    } else {
+      throw new JSApplicationIllegalArgumentException("Invalid textTransform: " + textTransform);
+    }
+    markUpdated();
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactFontManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactFontManager.java
index d5f29cd56173a2..94c8c6461dadf4 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactFontManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactFontManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextManager.java
index ff994f98ce33e6..7a6a6af6d83e31 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextShadowNode.java
index 488abfe84c0651..aa389fdcf407af 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactRawTextShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -24,16 +24,6 @@ public class ReactRawTextShadowNode extends ReactShadowNodeImpl {
 
   public ReactRawTextShadowNode() { }
 
-  private ReactRawTextShadowNode(ReactRawTextShadowNode node) {
-    super(node);
-    this.mText = node.mText;
-  }
-
-  @Override
-  protected ReactShadowNodeImpl copy() {
-    return new ReactRawTextShadowNode(this);
-  }
-
   @ReactProp(name = PROP_TEXT)
   public void setText(@Nullable String text) {
     mText = text;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTagSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTagSpan.java
index 772adc7a9c0855..3ce01845189744 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTagSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTagSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextAnchorViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextAnchorViewManager.java
index 776bce7ccdc565..4ebfc827cce56c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextAnchorViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextAnchorViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextInlineImageShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextInlineImageShadowNode.java
index 637767cb8d5311..83a436c46352e9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextInlineImageShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextInlineImageShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -23,8 +23,4 @@ public abstract class ReactTextInlineImageShadowNode extends LayoutShadowNode {
 
   public ReactTextInlineImageShadowNode() {}
 
-  protected ReactTextInlineImageShadowNode(ReactTextInlineImageShadowNode node) {
-    super(node);
-  }
-
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
index 1f4f52fd7bf85b..98d4e02e187be6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
@@ -1,10 +1,9 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
  */
-
 package com.facebook.react.views.text;
 
 import android.os.Build;
@@ -17,10 +16,13 @@
 import android.view.Gravity;
 import android.widget.TextView;
 import com.facebook.infer.annotation.Assertions;
-import com.facebook.react.uimanager.LayoutShadowNode;
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.uimanager.Spacing;
 import com.facebook.react.uimanager.UIViewOperationQueue;
+import com.facebook.react.uimanager.annotations.ReactProp;
+import com.facebook.react.uimanager.events.RCTEventEmitter;
 import com.facebook.yoga.YogaConstants;
 import com.facebook.yoga.YogaDirection;
 import com.facebook.yoga.YogaMeasureFunction;
@@ -44,6 +46,8 @@ public class ReactTextShadowNode extends ReactBaseTextShadowNode {
 
   private @Nullable Spannable mPreparedSpannableText;
 
+  private boolean mShouldNotifyOnTextLayout;
+
   private final YogaMeasureFunction mTextMeasureFunction =
       new YogaMeasureFunction() {
         @Override
@@ -53,85 +57,102 @@ public long measure(
             YogaMeasureMode widthMode,
             float height,
             YogaMeasureMode heightMode) {
+
           // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
           TextPaint textPaint = sTextPaintInstance;
+          textPaint.setTextSize(mFontSize != UNSET ? mFontSize : getDefaultFontSize());
           Layout layout;
-          Spanned text = Assertions.assertNotNull(
-              mPreparedSpannableText,
-              "Spannable element has not been prepared in onBeforeLayout");
+          Spanned text =
+              Assertions.assertNotNull(
+                  mPreparedSpannableText,
+                  "Spannable element has not been prepared in onBeforeLayout");
           BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
-          float desiredWidth = boring == null ?
-              Layout.getDesiredWidth(text, textPaint) : Float.NaN;
+          float desiredWidth = boring == null ? Layout.getDesiredWidth(text, textPaint) : Float.NaN;
 
           // technically, width should never be negative, but there is currently a bug in
           boolean unconstrainedWidth = widthMode == YogaMeasureMode.UNDEFINED || width < 0;
 
-          if (boring == null &&
-              (unconstrainedWidth ||
-                  (!YogaConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
+          Layout.Alignment alignment = Layout.Alignment.ALIGN_NORMAL;
+          switch (getTextAlign()) {
+            case Gravity.LEFT:
+              alignment = Layout.Alignment.ALIGN_NORMAL;
+              break;
+            case Gravity.RIGHT:
+              alignment = Layout.Alignment.ALIGN_OPPOSITE;
+              break;
+            case Gravity.CENTER_HORIZONTAL:
+              alignment = Layout.Alignment.ALIGN_CENTER;
+              break;
+          }
+
+          if (boring == null
+              && (unconstrainedWidth
+                  || (!YogaConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
             // Is used when the width is not known and the text is not boring, ie. if it contains
             // unicode characters.
 
             int hintWidth = (int) Math.ceil(desiredWidth);
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-              layout = new StaticLayout(
-                text,
-                textPaint,
-                hintWidth,
-                Layout.Alignment.ALIGN_NORMAL,
-                1.f,
-                0.f,
-                mIncludeFontPadding);
+              layout =
+                  new StaticLayout(
+                      text, textPaint, hintWidth, alignment, 1.f, 0.f, mIncludeFontPadding);
             } else {
-              layout = StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, hintWidth)
-                .setAlignment(Layout.Alignment.ALIGN_NORMAL)
-                .setLineSpacing(0.f, 1.f)
-                .setIncludePad(mIncludeFontPadding)
-                .setBreakStrategy(mTextBreakStrategy)
-                .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
-                .build();
+              layout =
+                  StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, hintWidth)
+                      .setAlignment(alignment)
+                      .setLineSpacing(0.f, 1.f)
+                      .setIncludePad(mIncludeFontPadding)
+                      .setBreakStrategy(mTextBreakStrategy)
+                      .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
+                      .build();
             }
 
           } else if (boring != null && (unconstrainedWidth || boring.width <= width)) {
             // Is used for single-line, boring text when the width is either unknown or bigger
             // than the width of the text.
-            layout = BoringLayout.make(
-                text,
-                textPaint,
-                boring.width,
-                Layout.Alignment.ALIGN_NORMAL,
-                1.f,
-                0.f,
-                boring,
-                mIncludeFontPadding);
+            layout =
+                BoringLayout.make(
+                    text,
+                    textPaint,
+                    boring.width,
+                    alignment,
+                    1.f,
+                    0.f,
+                    boring,
+                    mIncludeFontPadding);
           } else {
             // Is used for multiline, boring text and the width is known.
 
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-              layout = new StaticLayout(
-                  text,
-                  textPaint,
-                  (int) width,
-                  Layout.Alignment.ALIGN_NORMAL,
-                  1.f,
-                  0.f,
-                  mIncludeFontPadding);
+              layout =
+                  new StaticLayout(
+                      text, textPaint, (int) width, alignment, 1.f, 0.f, mIncludeFontPadding);
             } else {
-              layout = StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, (int) width)
-                .setAlignment(Layout.Alignment.ALIGN_NORMAL)
-                .setLineSpacing(0.f, 1.f)
-                .setIncludePad(mIncludeFontPadding)
-                .setBreakStrategy(mTextBreakStrategy)
-                .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
-                .build();
+              layout =
+                  StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, (int) width)
+                      .setAlignment(alignment)
+                      .setLineSpacing(0.f, 1.f)
+                      .setIncludePad(mIncludeFontPadding)
+                      .setBreakStrategy(mTextBreakStrategy)
+                      .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
+                      .build();
             }
           }
 
-          if (mNumberOfLines != UNSET &&
-              mNumberOfLines < layout.getLineCount()) {
+          if (mShouldNotifyOnTextLayout) {
+            WritableArray lines =
+                FontMetricsUtil.getFontMetrics(
+                    text, layout, sTextPaintInstance, getThemedContext());
+            WritableMap event = Arguments.createMap();
+            event.putArray("lines", lines);
+            getThemedContext()
+                .getJSModule(RCTEventEmitter.class)
+                .receiveEvent(getReactTag(), "topTextLayout", event);
+          }
+
+          if (mNumberOfLines != UNSET && mNumberOfLines < layout.getLineCount()) {
             return YogaMeasureOutput.make(
-                layout.getWidth(),
-                layout.getLineBottom(mNumberOfLines - 1));
+                layout.getWidth(), layout.getLineBottom(mNumberOfLines - 1));
           } else {
             return YogaMeasureOutput.make(layout.getWidth(), layout.getHeight());
           }
@@ -142,36 +163,12 @@ public ReactTextShadowNode() {
     initMeasureFunction();
   }
 
-  private ReactTextShadowNode(ReactTextShadowNode node) {
-    super(node);
-    this.mPreparedSpannableText = node.mPreparedSpannableText;
-  }
-
   private void initMeasureFunction() {
     if (!isVirtual()) {
       setMeasureFunction(mTextMeasureFunction);
     }
   }
 
-  @Override
-  protected LayoutShadowNode copy() {
-    return new ReactTextShadowNode(this);
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopy(long instanceHandle) {
-    ReactTextShadowNode copy = (ReactTextShadowNode) super.mutableCopy(instanceHandle);
-    copy.initMeasureFunction();
-    return copy;
-  }
-
-  @Override
-  public ReactShadowNodeImpl mutableCopyWithNewChildren(long instanceHandle) {
-    ReactTextShadowNode copy = (ReactTextShadowNode) super.mutableCopyWithNewChildren(instanceHandle);
-    copy.initMeasureFunction();
-    return copy;
-  }
-
   // Return text alignment according to LTR or RTL style
   private int getTextAlign() {
     int textAlign = mTextAlign;
@@ -209,18 +206,22 @@ public void onCollectExtraUpdates(UIViewOperationQueue uiViewOperationQueue) {
 
     if (mPreparedSpannableText != null) {
       ReactTextUpdate reactTextUpdate =
-        new ReactTextUpdate(
-          mPreparedSpannableText,
-          UNSET,
-          mContainsImages,
-          getPadding(Spacing.START),
-          getPadding(Spacing.TOP),
-          getPadding(Spacing.END),
-          getPadding(Spacing.BOTTOM),
-          getTextAlign(),
-          mTextBreakStrategy
-        );
+          new ReactTextUpdate(
+              mPreparedSpannableText,
+              UNSET,
+              mContainsImages,
+              getPadding(Spacing.START),
+              getPadding(Spacing.TOP),
+              getPadding(Spacing.END),
+              getPadding(Spacing.BOTTOM),
+              getTextAlign(),
+              mTextBreakStrategy);
       uiViewOperationQueue.enqueueUpdateExtraData(getReactTag(), reactTextUpdate);
     }
   }
+
+  @ReactProp(name = "onTextLayout")
+  public void setShouldNotifyOnTextLayout(boolean shouldNotifyOnTextLayout) {
+    mShouldNotifyOnTextLayout = shouldNotifyOnTextLayout;
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextUpdate.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextUpdate.java
index 964f92ed6a37dc..c31bb3c55ea52d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextUpdate.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextUpdate.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextView.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextView.java
index 226a5d4e0f4686..4c7023f07ea490 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextView.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,6 +11,7 @@
 import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.text.Layout;
+import android.text.Spannable;
 import android.text.Spanned;
 import android.text.TextUtils;
 import android.view.Gravity;
@@ -36,6 +37,7 @@ public class ReactTextView extends TextView implements ReactCompoundView {
   private TextUtils.TruncateAt mEllipsizeLocation = TextUtils.TruncateAt.END;
 
   private ReactViewBackgroundManager mReactBackgroundManager;
+  private Spannable mSpanned;
 
   public ReactTextView(Context context) {
     super(context);
@@ -255,4 +257,12 @@ public void setBorderRadius(float borderRadius, int position) {
   public void setBorderStyle(@Nullable String style) {
     mReactBackgroundManager.setBorderStyle(style);
   }
+
+  public void setSpanned(Spannable spanned) {
+    mSpanned = spanned;
+  }
+
+  public Spannable getSpanned() {
+    return mSpanned;
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
index 8b6578f38b9f9c..39cedcf7007774 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,20 @@
 
 package com.facebook.react.views.text;
 
+import android.text.Layout;
 import android.text.Spannable;
+import com.facebook.react.bridge.ReactContext;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.bridge.ReadableNativeMap;
+import com.facebook.react.common.MapBuilder;
 import com.facebook.react.common.annotations.VisibleForTesting;
 import com.facebook.react.module.annotations.ReactModule;
+import com.facebook.react.uimanager.ReactStylesDiffMap;
 import com.facebook.react.uimanager.ThemedReactContext;
+import com.facebook.yoga.YogaMeasureMode;
+import java.util.Map;
+import javax.annotation.Nullable;
 
 /**
  * Concrete class for {@link ReactTextAnchorViewManager} which represents view managers of anchor
@@ -58,4 +68,58 @@ protected void onAfterUpdateTransaction(ReactTextView view) {
     super.onAfterUpdateTransaction(view);
     view.updateView();
   }
+
+  @Override
+  public Object updateLocalData(ReactTextView view, ReactStylesDiffMap props, ReactStylesDiffMap localData) {
+    ReadableMap attributedString = localData.getMap("attributedString");
+    ReadableArray fragments = attributedString.getArray("fragments");
+    String string = attributedString.getString("string");
+
+    Spannable spanned = TextLayoutManager.spannedFromTextFragments(view.getContext(),
+      fragments, string);
+    view.setSpanned(spanned);
+
+    TextAttributeProps textViewProps = new TextAttributeProps(props);
+
+    // TODO add textBreakStrategy prop into local Data
+    int textBreakStrategy = Layout.BREAK_STRATEGY_HIGH_QUALITY;
+
+    return
+      new ReactTextUpdate(
+        spanned,
+        -1,             // TODO add this into local Data?
+        false,          // TODO add this into local Data
+        textViewProps.getStartPadding(),
+        textViewProps.getTopPadding(),
+        textViewProps.getEndPadding(),
+        textViewProps.getBottomPadding(),
+        textViewProps.getTextAlign(),
+        textBreakStrategy
+      );
+  }
+
+  @Override
+  public @Nullable Map getExportedCustomDirectEventTypeConstants() {
+    return MapBuilder.of("topTextLayout", MapBuilder.of("registrationName", "onTextLayout"));
+  }
+
+  public float[] measure(
+    ReactContext context,
+    ReactTextView view,
+    ReadableNativeMap localData,
+    ReadableNativeMap props,
+    float width,
+    YogaMeasureMode widthMode,
+    float height,
+    YogaMeasureMode heightMode) {
+
+    return TextLayoutManager.measureText(context,
+      view,
+      localData,
+      props,
+      width,
+      widthMode,
+      height,
+      heightMode);
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextShadowNode.java
index cfd6009b070892..094db58bb44477 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextShadowNode.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -17,12 +17,4 @@ public boolean isVirtual() {
 
   public ReactVirtualTextShadowNode() { }
 
-  private ReactVirtualTextShadowNode(ReactVirtualTextShadowNode node) {
-    super(node);
-  }
-
-  @Override
-  protected ReactVirtualTextShadowNode copy() {
-    return new ReactVirtualTextShadowNode(this);
-  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextViewManager.java
index 2df5718b5ad274..5fdee39cf4d488 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactVirtualTextViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ShadowStyleSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ShadowStyleSpan.java
index 2b2dd1fa94b4c2..4eface3f68792c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ShadowStyleSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ShadowStyleSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextAttributeProps.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextAttributeProps.java
new file mode 100644
index 00000000000000..cbf49e34dc0e84
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextAttributeProps.java
@@ -0,0 +1,423 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text;
+
+import android.graphics.Typeface;
+import android.os.Build;
+import android.text.Layout;
+import android.view.Gravity;
+import com.facebook.react.bridge.JSApplicationIllegalArgumentException;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.uimanager.PixelUtil;
+import com.facebook.react.uimanager.ReactStylesDiffMap;
+import com.facebook.react.uimanager.ViewProps;
+import com.facebook.yoga.YogaDirection;
+import javax.annotation.Nullable;
+
+public class TextAttributeProps {
+
+  private static final String INLINE_IMAGE_PLACEHOLDER = "I";
+  public static final int UNSET = -1;
+
+  private static final String PROP_SHADOW_OFFSET = "textShadowOffset";
+  private static final String PROP_SHADOW_OFFSET_WIDTH = "width";
+  private static final String PROP_SHADOW_OFFSET_HEIGHT = "height";
+  private static final String PROP_SHADOW_RADIUS = "textShadowRadius";
+  private static final String PROP_SHADOW_COLOR = "textShadowColor";
+
+  private static final String PROP_TEXT_TRANSFORM = "textTransform";
+
+  private static final int DEFAULT_TEXT_SHADOW_COLOR = 0x55000000;
+
+  protected float mLineHeight = Float.NaN;
+  protected float mLetterSpacing = Float.NaN;
+  protected boolean mIsColorSet = false;
+  protected boolean mAllowFontScaling = true;
+  protected int mColor;
+  protected boolean mIsBackgroundColorSet = false;
+  protected int mBackgroundColor;
+
+  protected int mNumberOfLines = UNSET;
+  protected int mFontSize = UNSET;
+  protected float mFontSizeInput = UNSET;
+  protected float mLineHeightInput = UNSET;
+  protected float mLetterSpacingInput = Float.NaN;
+  protected int mTextAlign = Gravity.NO_GRAVITY;
+  protected int mTextBreakStrategy =
+    (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) ? 0 : Layout.BREAK_STRATEGY_HIGH_QUALITY;
+  protected TextTransform mTextTransform = TextTransform.UNSET;
+
+  protected float mTextShadowOffsetDx = 0;
+  protected float mTextShadowOffsetDy = 0;
+  protected float mTextShadowRadius = 1;
+  protected int mTextShadowColor = DEFAULT_TEXT_SHADOW_COLOR;
+
+  protected boolean mIsUnderlineTextDecorationSet = false;
+  protected boolean mIsLineThroughTextDecorationSet = false;
+  protected boolean mIncludeFontPadding = true;
+
+  /**
+   * mFontStyle can be {@link Typeface#NORMAL} or {@link Typeface#ITALIC}.
+   * mFontWeight can be {@link Typeface#NORMAL} or {@link Typeface#BOLD}.
+   */
+  protected int mFontStyle = UNSET;
+
+  protected int mFontWeight = UNSET;
+  /**
+   * NB: If a font family is used that does not have a style in a certain Android version (ie.
+   * monospace bold pre Android 5.0), that style (ie. bold) will not be inherited by nested Text
+   * nodes. To retain that style, you have to add it to those nodes explicitly.
+   * Example, Android 4.4:
+   * <Text style={{fontFamily="serif" fontWeight="bold"}}>Bold Text</Text>
+   *   <Text style={{fontFamily="sans-serif"}}>Bold Text</Text>
+   *     <Text style={{fontFamily="serif}}>Bold Text</Text>
+   *
+   * <Text style={{fontFamily="monospace" fontWeight="bold"}}>Not Bold Text</Text>
+   *   <Text style={{fontFamily="sans-serif"}}>Not Bold Text</Text>
+   *     <Text style={{fontFamily="serif}}>Not Bold Text</Text>
+   *
+   * <Text style={{fontFamily="monospace" fontWeight="bold"}}>Not Bold Text</Text>
+   *   <Text style={{fontFamily="sans-serif" fontWeight="bold"}}>Bold Text</Text>
+   *     <Text style={{fontFamily="serif}}>Bold Text</Text>
+   */
+  protected @Nullable String mFontFamily = null;
+
+  protected boolean mContainsImages = false;
+  protected float mHeightOfTallestInlineImage = Float.NaN;
+
+  private final ReactStylesDiffMap mProps;
+
+
+  public TextAttributeProps(ReactStylesDiffMap props) {
+    mProps = props;
+    setNumberOfLines(getIntProp(ViewProps.NUMBER_OF_LINES, UNSET));
+    setLineHeight(getFloatProp(ViewProps.LINE_HEIGHT, UNSET));
+    setLetterSpacing(getFloatProp(ViewProps.LETTER_SPACING, Float.NaN));
+    setAllowFontScaling(getBooleanProp(ViewProps.ALLOW_FONT_SCALING, true));
+    setTextAlign(getStringProp(ViewProps.TEXT_ALIGN));
+    setFontSize(getFloatProp(ViewProps.FONT_SIZE, UNSET));
+    setColor(props.hasKey(ViewProps.COLOR) ? props.getInt(ViewProps.COLOR, 0) : null);
+    setColor(props.hasKey("foregroundColor") ? props.getInt("foregroundColor", 0) : null);
+    setBackgroundColor(props.hasKey(ViewProps.BACKGROUND_COLOR) ? props.getInt(ViewProps.BACKGROUND_COLOR, 0) : null);
+    setFontFamily(getStringProp(ViewProps.FONT_FAMILY));
+    setFontWeight(getStringProp(ViewProps.FONT_WEIGHT));
+    setFontStyle(getStringProp(ViewProps.FONT_STYLE));
+    setIncludeFontPadding(getBooleanProp(ViewProps.INCLUDE_FONT_PADDING, true));
+    setTextDecorationLine(getStringProp(ViewProps.TEXT_DECORATION_LINE));
+    setTextBreakStrategy(getStringProp(ViewProps.TEXT_BREAK_STRATEGY));
+    setTextShadowOffset(props.hasKey(PROP_SHADOW_OFFSET) ? props.getMap(PROP_SHADOW_OFFSET) : null);
+    setTextShadowRadius(getIntProp(PROP_SHADOW_RADIUS, 1));
+    setTextShadowColor(getIntProp(PROP_SHADOW_COLOR, DEFAULT_TEXT_SHADOW_COLOR));
+    setTextTransform(getStringProp(PROP_TEXT_TRANSFORM));
+  }
+
+  private boolean getBooleanProp(String name, boolean defaultValue) {
+    if (mProps.hasKey(name)) {
+      return mProps.getBoolean(name, defaultValue);
+    } else {
+      return defaultValue;
+    }
+  }
+
+  private String getStringProp(String name) {
+    if (mProps.hasKey(name)) {
+      return mProps.getString(name);
+    } else {
+      return null;
+    }
+  }
+
+  private int getIntProp(String name, int defaultvalue) {
+    if (mProps.hasKey(name)) {
+      return mProps.getInt(name, defaultvalue);
+    } else {
+      return defaultvalue;
+    }
+  }
+
+  private float getFloatProp(String name, float defaultvalue) {
+    if (mProps.hasKey(name)) {
+      return mProps.getFloat(name, defaultvalue);
+    } else {
+      return defaultvalue;
+    }
+  }
+
+  // Returns a line height which takes into account the requested line height
+  // and the height of the inline images.
+  public float getEffectiveLineHeight() {
+    boolean useInlineViewHeight =
+      !Float.isNaN(mLineHeight)
+        && !Float.isNaN(mHeightOfTallestInlineImage)
+        && mHeightOfTallestInlineImage > mLineHeight;
+    return useInlineViewHeight ? mHeightOfTallestInlineImage : mLineHeight;
+  }
+
+  // Return text alignment according to LTR or RTL style
+  public int getTextAlign() {
+    int textAlign = mTextAlign;
+    if (getLayoutDirection() == YogaDirection.RTL) {
+      if (textAlign == Gravity.RIGHT) {
+        textAlign = Gravity.LEFT;
+      } else if (textAlign == Gravity.LEFT) {
+        textAlign = Gravity.RIGHT;
+      }
+    }
+    return textAlign;
+  }
+
+  public void setNumberOfLines(int numberOfLines) {
+    mNumberOfLines = numberOfLines == 0 ? UNSET : numberOfLines;
+  }
+
+  public void setLineHeight(float lineHeight) {
+    mLineHeightInput = lineHeight;
+    if (lineHeight == UNSET) {
+      mLineHeight = Float.NaN;
+    } else {
+      mLineHeight =
+        mAllowFontScaling
+          ? PixelUtil.toPixelFromSP(lineHeight)
+          : PixelUtil.toPixelFromDIP(lineHeight);
+    }
+  }
+
+  public void setLetterSpacing(float letterSpacing) {
+    mLetterSpacingInput = letterSpacing;
+    mLetterSpacing = mAllowFontScaling
+      ? PixelUtil.toPixelFromSP(mLetterSpacingInput)
+      : PixelUtil.toPixelFromDIP(mLetterSpacingInput);
+  }
+
+  public void setAllowFontScaling(boolean allowFontScaling) {
+    if (allowFontScaling != mAllowFontScaling) {
+      mAllowFontScaling = allowFontScaling;
+      setFontSize(mFontSizeInput);
+      setLineHeight(mLineHeightInput);
+      setLetterSpacing(mLetterSpacingInput);
+    }
+  }
+
+  public void setTextAlign(@Nullable String textAlign) {
+    if (textAlign == null || "auto".equals(textAlign)) {
+      mTextAlign = Gravity.NO_GRAVITY;
+    } else if ("left".equals(textAlign)) {
+      mTextAlign = Gravity.LEFT;
+    } else if ("right".equals(textAlign)) {
+      mTextAlign = Gravity.RIGHT;
+    } else if ("center".equals(textAlign)) {
+      mTextAlign = Gravity.CENTER_HORIZONTAL;
+    } else if ("justify".equals(textAlign)) {
+      // Fallback gracefully for cross-platform compat instead of error
+      mTextAlign = Gravity.LEFT;
+    } else {
+      throw new JSApplicationIllegalArgumentException("Invalid textAlign: " + textAlign);
+    }
+  }
+
+  public void setFontSize(float fontSize) {
+    mFontSizeInput = fontSize;
+    if (fontSize != UNSET) {
+      fontSize =
+        mAllowFontScaling
+          ? (float) Math.ceil(PixelUtil.toPixelFromSP(fontSize))
+          : (float) Math.ceil(PixelUtil.toPixelFromDIP(fontSize));
+    }
+    mFontSize = (int) fontSize;
+  }
+
+  public void setColor(@Nullable Integer color) {
+    mIsColorSet = (color != null);
+    if (mIsColorSet) {
+      mColor = color;
+    }
+  }
+
+  public void setBackgroundColor(Integer color) {
+    //TODO: Don't apply background color to anchor TextView since it will be applied on the View directly
+    //if (!isVirtualAnchor()) {
+      mIsBackgroundColorSet = (color != null);
+      if (mIsBackgroundColorSet) {
+        mBackgroundColor = color;
+      }
+    //}
+  }
+
+  public void setFontFamily(@Nullable String fontFamily) {
+    mFontFamily = fontFamily;
+  }
+
+  /**
+   /* This code is duplicated in ReactTextInputManager
+   /* TODO: Factor into a common place they can both use
+   */
+  public void setFontWeight(@Nullable String fontWeightString) {
+    int fontWeightNumeric =
+      fontWeightString != null ? parseNumericFontWeight(fontWeightString) : -1;
+    int fontWeight = UNSET;
+    if (fontWeightNumeric >= 500 || "bold".equals(fontWeightString)) {
+      fontWeight = Typeface.BOLD;
+    } else if ("normal".equals(fontWeightString)
+      || (fontWeightNumeric != -1 && fontWeightNumeric < 500)) {
+      fontWeight = Typeface.NORMAL;
+    }
+    if (fontWeight != mFontWeight) {
+      mFontWeight = fontWeight;
+    }
+  }
+
+  /**
+   /* This code is duplicated in ReactTextInputManager
+   /* TODO: Factor into a common place they can both use
+   */
+  public void setFontStyle(@Nullable String fontStyleString) {
+    int fontStyle = UNSET;
+    if ("italic".equals(fontStyleString)) {
+      fontStyle = Typeface.ITALIC;
+    } else if ("normal".equals(fontStyleString)) {
+      fontStyle = Typeface.NORMAL;
+    }
+    if (fontStyle != mFontStyle) {
+      mFontStyle = fontStyle;
+    }
+  }
+
+  public void setIncludeFontPadding(boolean includepad) {
+    mIncludeFontPadding = includepad;
+  }
+
+  public void setTextDecorationLine(@Nullable String textDecorationLineString) {
+    mIsUnderlineTextDecorationSet = false;
+    mIsLineThroughTextDecorationSet = false;
+    if (textDecorationLineString != null) {
+      for (String textDecorationLineSubString : textDecorationLineString.split(" ")) {
+        if ("underline".equals(textDecorationLineSubString)) {
+          mIsUnderlineTextDecorationSet = true;
+        } else if ("line-through".equals(textDecorationLineSubString)) {
+          mIsLineThroughTextDecorationSet = true;
+        }
+      }
+    }
+  }
+
+  public void setTextBreakStrategy(@Nullable String textBreakStrategy) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+      return;
+    }
+
+    if (textBreakStrategy == null || "highQuality".equals(textBreakStrategy)) {
+      mTextBreakStrategy = Layout.BREAK_STRATEGY_HIGH_QUALITY;
+    } else if ("simple".equals(textBreakStrategy)) {
+      mTextBreakStrategy = Layout.BREAK_STRATEGY_SIMPLE;
+    } else if ("balanced".equals(textBreakStrategy)) {
+      mTextBreakStrategy = Layout.BREAK_STRATEGY_BALANCED;
+    } else {
+      throw new JSApplicationIllegalArgumentException(
+        "Invalid textBreakStrategy: " + textBreakStrategy);
+    }
+  }
+
+  public void setTextShadowOffset(ReadableMap offsetMap) {
+    mTextShadowOffsetDx = 0;
+    mTextShadowOffsetDy = 0;
+
+    if (offsetMap != null) {
+      if (offsetMap.hasKey(PROP_SHADOW_OFFSET_WIDTH)
+        && !offsetMap.isNull(PROP_SHADOW_OFFSET_WIDTH)) {
+        mTextShadowOffsetDx =
+          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_WIDTH));
+      }
+      if (offsetMap.hasKey(PROP_SHADOW_OFFSET_HEIGHT)
+        && !offsetMap.isNull(PROP_SHADOW_OFFSET_HEIGHT)) {
+        mTextShadowOffsetDy =
+          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_HEIGHT));
+      }
+    }
+  }
+
+  public void setTextShadowRadius(float textShadowRadius) {
+    if (textShadowRadius != mTextShadowRadius) {
+      mTextShadowRadius = textShadowRadius;
+    }
+  }
+
+  public void setTextShadowColor(int textShadowColor) {
+    if (textShadowColor != mTextShadowColor) {
+      mTextShadowColor = textShadowColor;
+
+    }
+  }
+
+  public void setTextTransform(@Nullable String textTransform) {
+    if (textTransform == null || "none".equals(textTransform)) {
+      mTextTransform = TextTransform.NONE;
+    } else if ("uppercase".equals(textTransform)) {
+      mTextTransform = TextTransform.UPPERCASE;
+    } else if ("lowercase".equals(textTransform)) {
+      mTextTransform = TextTransform.LOWERCASE;
+    } else if ("capitalize".equals(textTransform)) {
+      mTextTransform = TextTransform.CAPITALIZE;
+    } else {
+      throw new JSApplicationIllegalArgumentException("Invalid textTransform: " + textTransform);
+    }
+  }
+
+  /**
+   * Return -1 if the input string is not a valid numeric fontWeight (100, 200, ..., 900), otherwise
+   * return the weight.
+   *
+   * This code is duplicated in ReactTextInputManager
+   * TODO: Factor into a common place they can both use
+   */
+  private static int parseNumericFontWeight(String fontWeightString) {
+    // This should be much faster than using regex to verify input and Integer.parseInt
+    return fontWeightString.length() == 3
+      && fontWeightString.endsWith("00")
+      && fontWeightString.charAt(0) <= '9'
+      && fontWeightString.charAt(0) >= '1'
+      ? 100 * (fontWeightString.charAt(0) - '0')
+      : -1;
+  }
+
+  //TODO T31905686 remove this from here and add support to RTL
+  private YogaDirection getLayoutDirection() {
+    return YogaDirection.LTR;
+  }
+
+  public float getBottomPadding() {
+    return getPaddingProp(ViewProps.PADDING_BOTTOM);
+  }
+
+  public float getLeftPadding() {
+    return getPaddingProp(ViewProps.PADDING_LEFT);
+  }
+
+  public float getStartPadding() {
+    return getPaddingProp(ViewProps.PADDING_START);
+  }
+
+  public float getEndPadding() {
+    return getPaddingProp(ViewProps.PADDING_END);
+  }
+
+  public float getTopPadding() {
+    return getPaddingProp(ViewProps.PADDING_TOP);
+  }
+
+  public float getRightPadding() {
+    return getPaddingProp(ViewProps.PADDING_RIGHT);
+  }
+
+  private float getPaddingProp(String paddingType) {
+    if (mProps.hasKey(ViewProps.PADDING)) {
+      return PixelUtil.toPixelFromDIP(getFloatProp(ViewProps.PADDING, 0f));
+    }
+
+    return PixelUtil.toPixelFromDIP(getFloatProp(paddingType, 0f));
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextInlineImageSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextInlineImageSpan.java
index db620cb6157cb6..18a971e77ce06c 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextInlineImageSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextInlineImageSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
new file mode 100644
index 00000000000000..27b865279067c3
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
@@ -0,0 +1,326 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text;
+
+import static com.facebook.react.views.text.TextAttributeProps.UNSET;
+
+import android.content.Context;
+import android.os.Build;
+import android.text.BoringLayout;
+import android.text.Layout;
+import android.text.Spannable;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
+import android.text.StaticLayout;
+import android.text.TextPaint;
+import android.text.style.AbsoluteSizeSpan;
+import android.text.style.BackgroundColorSpan;
+import android.text.style.ForegroundColorSpan;
+import android.text.style.StrikethroughSpan;
+import android.text.style.UnderlineSpan;
+import com.facebook.react.bridge.ReactContext;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.bridge.ReadableNativeMap;
+import com.facebook.react.uimanager.PixelUtil;
+import com.facebook.react.uimanager.ReactStylesDiffMap;
+import com.facebook.react.uimanager.ViewDefaults;
+import com.facebook.yoga.YogaConstants;
+import com.facebook.yoga.YogaMeasureMode;
+import java.awt.font.TextAttribute;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Class responsible of creating {@link Spanned} object for the JS representation of Text
+ */
+public class TextLayoutManager {
+
+  // It's important to pass the ANTI_ALIAS_FLAG flag to the constructor rather than setting it
+  // later by calling setFlags. This is because the latter approach triggers a bug on Android 4.4.2.
+  // The bug is that unicode emoticons aren't measured properly which causes text to be clipped.
+  private static final TextPaint sTextPaintInstance = new TextPaint(TextPaint.ANTI_ALIAS_FLAG);
+
+  private static void buildSpannedFromShadowNode(
+    Context context,
+    ReadableArray fragments,
+    SpannableStringBuilder sb,
+    List<SetSpanOperation> ops) {
+
+    for (int i = 0, length = fragments.size(); i < length; i++) {
+      ReadableMap fragment = fragments.getMap(i);
+      int start = sb.length();
+
+      //ReactRawText
+      sb.append(fragment.getString("string"));
+
+// TODO: add support for TextInlineImage and BaseText
+//      if (child instanceof ReactRawTextShadowNode) {
+//        sb.append(((ReactRawTextShadowNode) child).getText());
+//      } else if (child instanceof ReactBaseTextShadowNode) {
+//        buildSpannedFromShadowNode((ReactBaseTextShadowNode) child, sb, ops);
+//      } else if (child instanceof ReactTextInlineImageShadowNode) {
+//        // We make the image take up 1 character in the span and put a corresponding character into
+//        // the text so that the image doesn't run over any following text.
+//        sb.append(INLINE_IMAGE_PLACEHOLDER);
+//        ops.add(
+//          new SetSpanOperation(
+//            sb.length() - INLINE_IMAGE_PLACEHOLDER.length(),
+//            sb.length(),
+//            ((ReactTextInlineImageShadowNode) child).buildInlineImageSpan()));
+//      } else {
+//        throw new IllegalViewOperationException(
+//          "Unexpected view type nested under text node: " + child.getClass());
+//      }
+
+      TextAttributeProps textAttributes = new TextAttributeProps(new ReactStylesDiffMap(fragment.getMap("textAttributes")));
+      int end = sb.length();
+      if (end >= start) {
+        if (textAttributes.mIsColorSet) {
+          ops.add(new SetSpanOperation(start, end, new ForegroundColorSpan(textAttributes.mColor)));
+        }
+        if (textAttributes.mIsBackgroundColorSet) {
+          ops.add(
+            new SetSpanOperation(
+              start, end, new BackgroundColorSpan(textAttributes.mBackgroundColor)));
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+          if (!Float.isNaN(textAttributes.mLetterSpacing)) {
+            ops.add(new SetSpanOperation(
+              start,
+              end,
+              new CustomLetterSpacingSpan(textAttributes.mLetterSpacing)));
+          }
+        }
+        ops.add(
+          new SetSpanOperation(
+            start, end, new AbsoluteSizeSpan(textAttributes.mFontSize)));
+        if (textAttributes.mFontStyle != UNSET
+          || textAttributes.mFontWeight != UNSET
+          || textAttributes.mFontFamily != null) {
+          ops.add(
+            new SetSpanOperation(
+              start,
+              end,
+              new CustomStyleSpan(
+                textAttributes.mFontStyle,
+                textAttributes.mFontWeight,
+                textAttributes.mFontFamily,
+                context.getAssets())));
+        }
+        if (textAttributes.mIsUnderlineTextDecorationSet) {
+          ops.add(new SetSpanOperation(start, end, new UnderlineSpan()));
+        }
+        if (textAttributes.mIsLineThroughTextDecorationSet) {
+          ops.add(new SetSpanOperation(start, end, new StrikethroughSpan()));
+        }
+        if (textAttributes.mTextShadowOffsetDx != 0 || textAttributes.mTextShadowOffsetDy != 0) {
+          ops.add(
+            new SetSpanOperation(
+              start,
+              end,
+              new ShadowStyleSpan(
+                textAttributes.mTextShadowOffsetDx,
+                textAttributes.mTextShadowOffsetDy,
+                textAttributes.mTextShadowRadius,
+                textAttributes.mTextShadowColor)));
+        }
+        if (!Float.isNaN(textAttributes.getEffectiveLineHeight())) {
+          ops.add(
+            new SetSpanOperation(
+              start, end, new CustomLineHeightSpan(textAttributes.getEffectiveLineHeight())));
+        }
+        if (textAttributes.mTextTransform != TextTransform.UNSET && textAttributes.mTextTransform != TextTransform.NONE) {
+          ops.add(
+            new SetSpanOperation(
+              start,
+              end,
+              new CustomTextTransformSpan(textAttributes.mTextTransform)));
+        }
+
+        int reactTag = fragment.getInt("reactTag");
+        ops.add(new SetSpanOperation(start, end, new ReactTagSpan(reactTag)));
+      }
+    }
+  }
+
+  protected static Spannable spannedFromTextFragments(
+    Context context,
+    ReadableArray fragments, String text) {
+    SpannableStringBuilder sb = new SpannableStringBuilder();
+
+    // TODO(5837930): Investigate whether it's worth optimizing this part and do it if so
+
+    // The {@link SpannableStringBuilder} implementation require setSpan operation to be called
+    // up-to-bottom, otherwise all the spannables that are withing the region for which one may set
+    // a new spannable will be wiped out
+    List<SetSpanOperation> ops = new ArrayList<>();
+
+    buildSpannedFromShadowNode(context, fragments, sb, ops);
+
+// TODO T31905686: add support for inline Images
+//    textShadowNode.mContainsImages = false;
+//    textShadowNode.mHeightOfTallestInlineImage = Float.NaN;
+
+    // While setting the Spans on the final text, we also check whether any of them are images.
+    int priority = 0;
+    for (SetSpanOperation op : ops) {
+// TODO T31905686: add support for TextInlineImage in C++
+//      if (op.what instanceof TextInlineImageSpan) {
+//        int height = ((TextInlineImageSpan) op.what).getHeight();
+//        textShadowNode.mContainsImages = true;
+//        if (Float.isNaN(textShadowNode.mHeightOfTallestInlineImage)
+//          || height > textShadowNode.mHeightOfTallestInlineImage) {
+//          textShadowNode.mHeightOfTallestInlineImage = height;
+//        }
+//      }
+
+      // Actual order of calling {@code execute} does NOT matter,
+      // but the {@code priority} DOES matter.
+      op.execute(sb, priority);
+      priority++;
+    }
+
+    return sb;
+  }
+
+  public static float[] measureText(
+    ReactContext context,
+    ReactTextView view,
+    ReadableNativeMap attributedString,
+    ReadableNativeMap paragraphAttributes,
+    float width,
+    YogaMeasureMode widthYogaMeasureMode,
+    float height,
+    YogaMeasureMode heightYogaMeasureMode) {
+
+    // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
+    TextPaint textPaint = sTextPaintInstance;
+    Layout layout;
+
+    Spannable preparedSpannableText = view == null ? null : view.getSpanned();
+
+    // TODO add these props to paragraph attributes
+    int textBreakStrategy = Layout.BREAK_STRATEGY_HIGH_QUALITY;
+    boolean includeFontPadding = true;
+
+    if (preparedSpannableText == null) {
+      preparedSpannableText = spannedFromTextFragments(context, attributedString.getArray("fragments"), attributedString.getString("string"));
+    }
+
+    if (preparedSpannableText == null) {
+      throw new IllegalStateException("Spannable element has not been prepared in onBeforeLayout");
+    }
+    Spanned text = preparedSpannableText;
+    BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
+    float desiredWidth = boring == null ?
+      Layout.getDesiredWidth(text, textPaint) : Float.NaN;
+
+    // technically, width should never be negative, but there is currently a bug in
+    boolean unconstrainedWidth = widthYogaMeasureMode == YogaMeasureMode.UNDEFINED || width < 0;
+
+    if (boring == null &&
+      (unconstrainedWidth ||
+        (!YogaConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
+      // Is used when the width is not known and the text is not boring, ie. if it contains
+      // unicode characters.
+
+      int hintWidth = (int) Math.ceil(desiredWidth);
+      if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+        layout = new StaticLayout(
+          text,
+          textPaint,
+          hintWidth,
+          Layout.Alignment.ALIGN_NORMAL,
+          1.f,
+          0.f,
+          includeFontPadding);
+      } else {
+        layout = StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, hintWidth)
+          .setAlignment(Layout.Alignment.ALIGN_NORMAL)
+          .setLineSpacing(0.f, 1.f)
+          .setIncludePad(includeFontPadding)
+          .setBreakStrategy(textBreakStrategy)
+          .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
+          .build();
+      }
+
+    } else if (boring != null && (unconstrainedWidth || boring.width <= width)) {
+      // Is used for single-line, boring text when the width is either unknown or bigger
+      // than the width of the text.
+      layout = BoringLayout.make(
+        text,
+        textPaint,
+        boring.width,
+        Layout.Alignment.ALIGN_NORMAL,
+        1.f,
+        0.f,
+        boring,
+        includeFontPadding);
+    } else {
+      // Is used for multiline, boring text and the width is known.
+
+      if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+        layout = new StaticLayout(
+          text,
+          textPaint,
+          (int) width,
+          Layout.Alignment.ALIGN_NORMAL,
+          1.f,
+          0.f,
+          includeFontPadding);
+      } else {
+        layout = StaticLayout.Builder.obtain(text, 0, text.length(), textPaint, (int) width)
+          .setAlignment(Layout.Alignment.ALIGN_NORMAL)
+          .setLineSpacing(0.f, 1.f)
+          .setIncludePad(includeFontPadding)
+          .setBreakStrategy(textBreakStrategy)
+          .setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_NORMAL)
+          .build();
+      }
+    }
+
+    int maximumNumberOfLines = paragraphAttributes.hasKey("maximumNumberOfLines") ? paragraphAttributes.getInt("maximumNumberOfLines") : UNSET;
+
+    width = layout.getWidth();
+    if (maximumNumberOfLines != UNSET
+      && maximumNumberOfLines != 0
+      && maximumNumberOfLines < layout.getLineCount()) {
+      height = layout.getLineBottom(maximumNumberOfLines - 1);
+    } else {
+      height = layout.getHeight();
+    }
+
+    return new float[] { PixelUtil.toSPFromPixel(width), PixelUtil.toSPFromPixel(height) };
+  }
+
+  private static class SetSpanOperation {
+    protected int start, end;
+    protected Object what;
+
+    SetSpanOperation(int start, int end, Object what) {
+      this.start = start;
+      this.end = end;
+      this.what = what;
+    }
+
+    public void execute(SpannableStringBuilder sb, int priority) {
+      // All spans will automatically extend to the right of the text, but not the left - except
+      // for spans that start at the beginning of the text.
+      int spanFlags = Spannable.SPAN_EXCLUSIVE_INCLUSIVE;
+      if (start == 0) {
+        spanFlags = Spannable.SPAN_INCLUSIVE_INCLUSIVE;
+      }
+
+      spanFlags &= ~Spannable.SPAN_PRIORITY;
+      spanFlags |= (priority << Spannable.SPAN_PRIORITY_SHIFT) & Spannable.SPAN_PRIORITY;
+
+      sb.setSpan(what, start, end, spanFlags);
+    }
+  }
+}
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/TextTransform.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextTransform.java
new file mode 100644
index 00000000000000..5209b2a579e0a3
--- /dev/null
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/TextTransform.java
@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text;
+
+/**
+ * Types of text transforms for CustomTextTransformSpan
+ */
+public enum TextTransform { NONE, UPPERCASE, LOWERCASE, CAPITALIZE, UNSET };
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/BUCK
index a070c342416453..17b9ed51457178 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "frescosupport",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageShadowNode.java
index 301174772eac6f..9a065eb203f0c8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -50,22 +50,6 @@ public FrescoBasedReactTextInlineImageShadowNode(
     mCallerContext = callerContext;
   }
 
-  private FrescoBasedReactTextInlineImageShadowNode(FrescoBasedReactTextInlineImageShadowNode node) {
-    super(node);
-    mHeaders = node.mHeaders; // mHeaders is immutable
-    mWidth = node.mWidth;
-    mHeight = node.mHeight;
-    mTintColor = node.mTintColor;
-    mDraweeControllerBuilder = node.mDraweeControllerBuilder;
-    mCallerContext = node.mCallerContext;
-    mUri = node.mUri;
-  }
-
-  @Override
-  protected FrescoBasedReactTextInlineImageShadowNode copy() {
-    return new FrescoBasedReactTextInlineImageShadowNode(this);
-  }
-
   @ReactProp(name = "src")
   public void setSource(@Nullable ReadableArray sources) {
     final String source =
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageSpan.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageSpan.java
index 08d3ed9d2f7692..30dd1bb63a8e2e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageSpan.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageSpan.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageViewManager.java
index ca1ee0baba1350..7192982a0eb598 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/frescosupport/FrescoBasedReactTextInlineImageViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,7 +25,7 @@
 public class FrescoBasedReactTextInlineImageViewManager
   extends ViewManager<View, FrescoBasedReactTextInlineImageShadowNode> {
 
-  protected static final String REACT_CLASS = "RCTTextInlineImage";
+  public static final String REACT_CLASS = "RCTTextInlineImage";
 
   private final @Nullable AbstractDraweeControllerBuilder mDraweeControllerBuilder;
   private final @Nullable Object mCallerContext;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/BUCK
index bd919beae90211..3c29c2262fcb4f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "textinput",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ContentSizeWatcher.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ContentSizeWatcher.java
index e02a8c9e0969b0..b2b94dd41b18b6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ContentSizeWatcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ContentSizeWatcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactContentSizeChangedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactContentSizeChangedEvent.java
index e9cf4fffe7acae..9c3ef1c0d33a15 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactContentSizeChangedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactContentSizeChangedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
index 450075384d1392..476c25dd51b0ba 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditTextInputConnectionWrapper.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditTextInputConnectionWrapper.java
index 26bead54761d65..23e9888315a55d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditTextInputConnectionWrapper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditTextInputConnectionWrapper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextChangedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextChangedEvent.java
index 7ecb6ef86d50a4..46e3012f00002a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextChangedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextChangedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputBlurEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputBlurEvent.java
index bb15cc6ed47fa3..92ebd12915878a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputBlurEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputBlurEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEndEditingEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEndEditingEvent.java
index 812bea17461d6d..c8afefd9e45133 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEndEditingEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEndEditingEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEvent.java
index 2df3a8380a91db..143e7e4d897dc6 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputFocusEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputFocusEvent.java
index 883069b0e97e6d..5be8f9e3eb0668 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputFocusEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputFocusEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputKeyPressEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputKeyPressEvent.java
index f3530d0e3df53e..388aa65d500662 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputKeyPressEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputKeyPressEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputLocalData.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputLocalData.java
index a91d72f42b7298..8d7392ea99c728 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputLocalData.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputLocalData.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
index 4f1e87d5390ebc..5e024e8cf790c9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -162,7 +162,7 @@ public Map<String, Object> getExportedCustomBubblingEventTypeConstants() {
   @Override
   public Map<String, Object> getExportedCustomDirectEventTypeConstants() {
     return MapBuilder.<String, Object>builder()
-        .put(ScrollEventType.SCROLL.getJSEventName(), MapBuilder.of("registrationName", "onScroll"))
+        .put(ScrollEventType.getJSEventName(ScrollEventType.SCROLL), MapBuilder.of("registrationName", "onScroll"))
         .build();
   }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSelectionEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSelectionEvent.java
index f34e342a518fd4..1ab8c077e45b22 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSelectionEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSelectionEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputShadowNode.java
index 20807f81fbc518..c009dfbcc65bf9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputShadowNode.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -54,44 +54,10 @@ public ReactTextInputShadowNode() {
     initMeasureFunction();
   }
 
-  private ReactTextInputShadowNode(ReactTextInputShadowNode node) {
-    super(node);
-    mMostRecentEventCount = node.mMostRecentEventCount;
-    mText = node.mText;
-    mLocalData = node.mLocalData;
-  }
-
-  @Override
-  protected ReactTextInputShadowNode copy() {
-    return new ReactTextInputShadowNode(this);
-  }
-
-  @Override
-  public ReactTextInputShadowNode mutableCopy(long instanceHandle) {
-    ReactTextInputShadowNode node = (ReactTextInputShadowNode) super.mutableCopy(instanceHandle);
-    node.initMeasureFunction();
-    ThemedReactContext themedContext = getThemedContext();
-    if (themedContext != null) {
-      node.setThemedContext(themedContext);
-    }
-    return node;
-  }
-
   private void initMeasureFunction() {
     setMeasureFunction(this);
   }
 
-  @Override
-  public ReactTextInputShadowNode mutableCopyWithNewChildren(long instanceHandle) {
-    ReactTextInputShadowNode node = (ReactTextInputShadowNode) super.mutableCopyWithNewChildren(instanceHandle);
-    node.initMeasureFunction();
-    ThemedReactContext themedContext = getThemedContext();
-    if (themedContext != null) {
-      node.setThemedContext(themedContext);
-    }
-    return node;
-  }
-
   @Override
   public void setThemedContext(ThemedReactContext themedContext) {
     super.setThemedContext(themedContext);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSubmitEditingEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSubmitEditingEvent.java
index e0819785034b60..b75146c6e110c9 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSubmitEditingEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputSubmitEditingEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ScrollWatcher.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ScrollWatcher.java
index 079d8555428d09..5902cc082b0897 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ScrollWatcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ScrollWatcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/SelectionWatcher.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/SelectionWatcher.java
index 0ac6d0e5cbfcdb..13bbdd20b4a79d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/SelectionWatcher.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/SelectionWatcher.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/BUCK
index 4cc9bccd712546..76dd4b1d4b2765 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "toolbar",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/DrawableWithIntrinsicSize.java b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/DrawableWithIntrinsicSize.java
index 7d8a5f5dadcf88..b673abd96049ba 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/DrawableWithIntrinsicSize.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/DrawableWithIntrinsicSize.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbar.java b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbar.java
index e0526dc159f898..ca8c8ebe12a5f2 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbar.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbar.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbarManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbarManager.java
index 99cca31692fcdc..d15d9ba96a4cd7 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbarManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/ReactToolbarManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/events/ToolbarClickEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/events/ToolbarClickEvent.java
index 6b88f2dee676a0..9025178c050e1f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/events/ToolbarClickEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/toolbar/events/ToolbarClickEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/view/BUCK
index 601614384b9636..a7b4d74e8b01e5 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "view",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ColorUtil.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ColorUtil.java
index 1e57cc8e793ad1..5b4bd245a6e523 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ColorUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ColorUtil.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/MeasureUtil.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/MeasureUtil.java
index 6f764282e7e16c..44cdf5f2ccec80 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/MeasureUtil.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/MeasureUtil.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactDrawableHelper.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactDrawableHelper.java
index 2675c10d2790a8..49205f95388a4d 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactDrawableHelper.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactDrawableHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundDrawable.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundDrawable.java
index 1a31a0cc38bd37..430c5895bd156a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundDrawable.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundDrawable.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -53,14 +53,13 @@ public class ReactViewBackgroundDrawable extends Drawable {
   // 0 == 0x00000000, all bits set to 0.
   private static final int ALL_BITS_UNSET = 0;
 
-
-  private static enum BorderStyle {
+  private enum BorderStyle {
     SOLID,
     DASHED,
     DOTTED;
 
-    public @Nullable PathEffect getPathEffect(float borderWidth) {
-      switch (this) {
+    public static @Nullable PathEffect getPathEffect(BorderStyle style, float borderWidth) {
+      switch (style) {
         case SOLID:
           return null;
 
@@ -958,7 +957,7 @@ public float getBorderWidthOrDefaultTo(final float defaultValue, final int spaci
    */
   private void updatePathEffect() {
     mPathEffectForBorderStyle = mBorderStyle != null
-        ? mBorderStyle.getPathEffect(getFullBorderWidth())
+        ? BorderStyle.getPathEffect(mBorderStyle, getFullBorderWidth())
         : null;
 
     mPaint.setPathEffect(mPathEffectForBorderStyle);
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundManager.java
index 95fe29f7970bb2..fd9db9afea24df 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewBackgroundManager.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewGroup.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewGroup.java
index 6cd9462ce35d11..a3a189dc1bb088 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewGroup.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewGroup.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -39,8 +39,6 @@
 import com.facebook.react.uimanager.ViewGroupDrawingOrderHelper;
 import com.facebook.react.uimanager.ViewProps;
 import com.facebook.yoga.YogaConstants;
-import java.util.ArrayList;
-import java.util.List;
 import javax.annotation.Nullable;
 
 /**
@@ -108,18 +106,16 @@ public void onLayoutChange(
   private @Nullable ChildrenLayoutChangeListener mChildrenLayoutChangeListener;
   private @Nullable ReactViewBackgroundDrawable mReactBackgroundDrawable;
   private @Nullable OnInterceptTouchEventListener mOnInterceptTouchEventListener;
-  private @Nullable List<View> mTransitioningViews;
   private boolean mNeedsOffscreenAlphaCompositing = false;
   private final ViewGroupDrawingOrderHelper mDrawingOrderHelper;
   private @Nullable Path mPath;
   private int mLayoutDirection;
+  private float mBackfaceOpacity = 1.f;
+  private String mBackfaceVisibility = "visible";
 
   public ReactViewGroup(Context context) {
     super(context);
-    // TODO: Remove this check after a couple public releases.
-    if (!ViewProps.sDefaultOverflowHidden) {
-      setClipChildren(false);
-    }
+    setClipChildren(false);
     mDrawingOrderHelper = new ViewGroupDrawingOrderHelper(this);
   }
 
@@ -337,16 +333,16 @@ public void updateClippingRect() {
 
   private void updateClippingToRect(Rect clippingRect) {
     Assertions.assertNotNull(mAllChildren);
-    int childIndexOffset = 0;
+    int clippedSoFar = 0;
     for (int i = 0; i < mAllChildrenCount; i++) {
-      updateSubviewClipStatus(clippingRect, i, childIndexOffset);
-      if (!isChildInViewGroup(mAllChildren[i])) {
-        childIndexOffset++;
+      updateSubviewClipStatus(clippingRect, i, clippedSoFar);
+      if (mAllChildren[i].getParent() == null) {
+        clippedSoFar++;
       }
     }
   }
 
-  private void updateSubviewClipStatus(Rect clippingRect, int idx, int childIndexOffset) {
+  private void updateSubviewClipStatus(Rect clippingRect, int idx, int clippedSoFar) {
     View child = Assertions.assertNotNull(mAllChildren)[idx];
     sHelperRect.set(child.getLeft(), child.getTop(), child.getRight(), child.getBottom());
     boolean intersects = clippingRect
@@ -363,10 +359,10 @@ private void updateSubviewClipStatus(Rect clippingRect, int idx, int childIndexO
     if (!intersects && child.getParent() != null && !isAnimating) {
       // We can try saving on invalidate call here as the view that we remove is out of visible area
       // therefore invalidation is not necessary.
-      super.removeViewsInLayout(idx - childIndexOffset, 1);
+      super.removeViewsInLayout(idx - clippedSoFar, 1);
       needUpdateClippingRecursive = true;
     } else if (intersects && child.getParent() == null) {
-      super.addViewInLayout(child, idx - childIndexOffset, sDefaultLayoutParam, true);
+      super.addViewInLayout(child, idx - clippedSoFar, sDefaultLayoutParam, true);
       invalidate();
       needUpdateClippingRecursive = true;
     } else if (intersects) {
@@ -402,25 +398,19 @@ private void updateSubviewClipStatus(View subview) {
     boolean oldIntersects = (subview.getParent() != null);
 
     if (intersects != oldIntersects) {
-      int childIndexOffset = 0;
+      int clippedSoFar = 0;
       for (int i = 0; i < mAllChildrenCount; i++) {
         if (mAllChildren[i] == subview) {
-          updateSubviewClipStatus(mClippingRect, i, childIndexOffset);
+          updateSubviewClipStatus(mClippingRect, i, clippedSoFar);
           break;
         }
-        if (!isChildInViewGroup(mAllChildren[i])) {
-          childIndexOffset++;
+        if (mAllChildren[i].getParent() == null) {
+          clippedSoFar++;
         }
       }
     }
   }
 
-  private boolean isChildInViewGroup(View view) {
-    // A child is in the group if it's not clipped and it's not transitioning.
-    return view.getParent() != null
-      && (mTransitioningViews == null || !mTransitioningViews.contains(view));
-  }
-
   @Override
   protected void onSizeChanged(int w, int h, int oldw, int oldh) {
     super.onSizeChanged(w, h, oldw, oldh);
@@ -518,13 +508,13 @@ protected void dispatchSetPressed(boolean pressed) {
     addInArray(child, index);
     // we add view as "clipped" and then run {@link #updateSubviewClipStatus} to conditionally
     // attach it
-    int childIndexOffset = 0;
+    int clippedSoFar = 0;
     for (int i = 0; i < index; i++) {
-      if (!isChildInViewGroup(mAllChildren[i])) {
-        childIndexOffset++;
+      if (mAllChildren[i].getParent() == null) {
+        clippedSoFar++;
       }
     }
-    updateSubviewClipStatus(mClippingRect, index, childIndexOffset);
+    updateSubviewClipStatus(mClippingRect, index, clippedSoFar);
     child.addOnLayoutChangeListener(mChildrenLayoutChangeListener);
   }
 
@@ -534,14 +524,14 @@ protected void dispatchSetPressed(boolean pressed) {
     Assertions.assertNotNull(mAllChildren);
     view.removeOnLayoutChangeListener(mChildrenLayoutChangeListener);
     int index = indexOfChildInAllChildren(view);
-    if (isChildInViewGroup(mAllChildren[index])) {
-      int childIndexOffset = 0;
+    if (mAllChildren[index].getParent() != null) {
+      int clippedSoFar = 0;
       for (int i = 0; i < index; i++) {
-        if (!isChildInViewGroup(mAllChildren[i])) {
-          childIndexOffset++;
+        if (mAllChildren[i].getParent() == null) {
+          clippedSoFar++;
         }
       }
-      super.removeViewsInLayout(index - childIndexOffset, 1);
+      super.removeViewsInLayout(index - clippedSoFar, 1);
     }
     removeFromArray(index);
   }
@@ -556,26 +546,6 @@ protected void dispatchSetPressed(boolean pressed) {
     mAllChildrenCount = 0;
   }
 
-  /*package*/ void startViewTransitionWithSubviewClippingEnabled(View view) {
-    // We're mirroring ViewGroup's mTransitioningViews since when a transitioning child is removed,
-    // its parent is not set to null unlike a regular child. Normally this wouldn't be an issue as
-    // ViewGroup pretends the transitioning child doesn't exist when calling any methods that expose
-    // child views, but we keep track of our children directly when subview clipping is enabled and
-    // need to be aware of these.
-    if (mTransitioningViews == null) {
-      mTransitioningViews = new ArrayList<>();
-    }
-    mTransitioningViews.add(view);
-    startViewTransition(view);
-  }
-
-  /*package*/ void endViewTransitionWithSubviewClippingEnabled(View view) {
-    if (mTransitioningViews != null) {
-      mTransitioningViews.remove(view);
-    }
-    endViewTransition(view);
-  }
-
   private int indexOfChildInAllChildren(View child) {
     final int count = mAllChildrenCount;
     final View[] children = Assertions.assertNotNull(mAllChildren);
@@ -676,6 +646,10 @@ public void setOverflow(String overflow) {
     invalidate();
   }
 
+  public @Nullable String getOverflow() {
+    return mOverflow;
+  }
+
   /**
    * Set the background for the view or remove the background. It calls {@link
    * #setBackground(Drawable)} or {@link #setBackgroundDrawable(Drawable)} based on the sdk version.
@@ -865,4 +839,36 @@ private void dispatchOverflowDraw(Canvas canvas) {
       }
     }
   }
+
+  public void setOpacityIfPossible(float opacity) {
+    mBackfaceOpacity = opacity;
+    setBackfaceVisibilityDependantOpacity();
+  }
+
+  public void setBackfaceVisibility(String backfaceVisibility) {
+    mBackfaceVisibility = backfaceVisibility;
+    setBackfaceVisibilityDependantOpacity();
+  }
+
+  public void setBackfaceVisibilityDependantOpacity() {
+    boolean isBackfaceVisible = mBackfaceVisibility.equals("visible");
+
+    if (isBackfaceVisible) {
+      setAlpha(mBackfaceOpacity);
+      return;
+    }
+
+    float rotationX = getRotationX();
+    float rotationY = getRotationY();
+
+    boolean isFrontfaceVisible = (rotationX >= -90.f && rotationX < 90.f) &&
+      (rotationY >= -90.f && rotationY < 90.f);
+
+    if (isFrontfaceVisible) {
+      setAlpha(mBackfaceOpacity);
+      return;
+    }
+
+    setAlpha(0);
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
index c7b8769aced481..9fae2796b39a00 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -262,6 +262,22 @@ public void setOverflow(ReactViewGroup view, String overflow) {
     view.setOverflow(overflow);
   }
 
+  @ReactProp(name = "backfaceVisibility")
+  public void setBackfaceVisibility(ReactViewGroup view, String backfaceVisibility) {
+    view.setBackfaceVisibility(backfaceVisibility);
+  }
+
+  @Override
+  public void setOpacity(ReactViewGroup view, float opacity) {
+    view.setOpacityIfPossible(opacity);
+  }
+
+  @Override
+  public void setTransform(ReactViewGroup view, ReadableArray matrix) {
+    super.setTransform(view, matrix);
+    view.setBackfaceVisibilityDependantOpacity();
+  }
+
   @Override
   public String getName() {
     return REACT_CLASS;
@@ -398,24 +414,4 @@ public void removeAllViews(ReactViewGroup parent) {
       parent.removeAllViews();
     }
   }
-
-  @Override
-  public void startViewTransition(ReactViewGroup parent, View view) {
-    boolean removeClippedSubviews = parent.getRemoveClippedSubviews();
-    if (removeClippedSubviews) {
-      parent.startViewTransitionWithSubviewClippingEnabled(view);
-    } else {
-      parent.startViewTransition(view);
-    }
-  }
-
-  @Override
-  public void endViewTransition(ReactViewGroup parent, View view) {
-    boolean removeClippedSubviews = parent.getRemoveClippedSubviews();
-    if (removeClippedSubviews) {
-      parent.endViewTransitionWithSubviewClippingEnabled(view);
-    } else {
-      parent.endViewTransition(view);
-    }
-  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/BUCK
index 829b41901e0a91..953bdc042a049a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "viewpager",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollEvent.java
index 2d4dc97c884fa0..a7ac123e61780f 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollStateChangedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollStateChangedEvent.java
index 49ba9f322d8f8c..295165da2a5059 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollStateChangedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageScrollStateChangedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageSelectedEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageSelectedEvent.java
index 773c31bedbeea8..ed8e3c4bdd4854 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageSelectedEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/PageSelectedEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPager.java b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPager.java
index 48b5f1a6194956..5f88a97750e246 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPagerManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPagerManager.java
index 65d676ac91591e..ff5fdc22e021db 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPagerManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/viewpager/ReactViewPagerManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -28,7 +28,7 @@
 @ReactModule(name = ReactViewPagerManager.REACT_CLASS)
 public class ReactViewPagerManager extends ViewGroupManager<ReactViewPager> {
 
-  protected static final String REACT_CLASS = "AndroidViewPager";
+  public static final String REACT_CLASS = "AndroidViewPager";
 
   public static final int COMMAND_SET_PAGE = 1;
   public static final int COMMAND_SET_PAGE_WITHOUT_ANIMATION = 2;
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/BUCK b/ReactAndroid/src/main/java/com/facebook/react/views/webview/BUCK
index e2f8331fb95073..5e8a0cc8333e64 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "webview",
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java
index 6e55b80f8c3e5a..677831ffe82ff1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,21 +8,8 @@
 package com.facebook.react.views.webview;
 
 import android.annotation.TargetApi;
-import android.content.Context;
-import com.facebook.react.uimanager.UIManagerModule;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.regex.Pattern;
-import javax.annotation.Nullable;
-
-import java.io.UnsupportedEncodingException;
-import java.net.URLEncoder;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Locale;
-import java.util.Map;
-
 import android.content.ActivityNotFoundException;
+import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Picture;
@@ -53,6 +40,7 @@
 import com.facebook.react.module.annotations.ReactModule;
 import com.facebook.react.uimanager.SimpleViewManager;
 import com.facebook.react.uimanager.ThemedReactContext;
+import com.facebook.react.uimanager.UIManagerModule;
 import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.events.ContentSizeChangeEvent;
 import com.facebook.react.uimanager.events.Event;
@@ -62,10 +50,14 @@
 import com.facebook.react.views.webview.events.TopLoadingStartEvent;
 import com.facebook.react.views.webview.events.TopMessageEvent;
 import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.regex.Pattern;
 import javax.annotation.Nullable;
 import org.json.JSONException;
 import org.json.JSONObject;
@@ -94,7 +86,7 @@
 @ReactModule(name = ReactWebViewManager.REACT_CLASS)
 public class ReactWebViewManager extends SimpleViewManager<WebView> {
 
-  protected static final String REACT_CLASS = "RCTWebView";
+  public static final String REACT_CLASS = "RCTWebView";
 
   protected static final String HTML_ENCODING = "UTF-8";
   protected static final String HTML_MIME_TYPE = "text/html";
@@ -140,10 +132,10 @@ public void onPageStarted(WebView webView, String url, Bitmap favicon) {
       mLastLoadFailed = false;
 
       dispatchEvent(
-          webView,
-          new TopLoadingStartEvent(
-              webView.getId(),
-              createWebViewEvent(webView, url)));
+        webView,
+        new TopLoadingStartEvent(
+          webView.getId(),
+          createWebViewEvent(webView, url)));
     }
 
     @Override
@@ -153,7 +145,7 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
       // url blacklisting
       if (mUrlPrefixesForDefaultIntent != null && mUrlPrefixesForDefaultIntent.size() > 0) {
         ArrayList<Object> urlPrefixesForDefaultIntent =
-            mUrlPrefixesForDefaultIntent.toArrayList();
+          mUrlPrefixesForDefaultIntent.toArrayList();
         for (Object urlPrefix : urlPrefixesForDefaultIntent) {
           if (url.startsWith((String) urlPrefix)) {
             launchIntent(view.getContext(), url);
@@ -196,10 +188,10 @@ private boolean shouldHandleURL(List<Pattern> originWhitelist, String url) {
 
     @Override
     public void onReceivedError(
-        WebView webView,
-        int errorCode,
-        String description,
-        String failingUrl) {
+      WebView webView,
+      int errorCode,
+      String description,
+      String failingUrl) {
       super.onReceivedError(webView, errorCode, description, failingUrl);
       mLastLoadFailed = true;
 
@@ -212,16 +204,16 @@ public void onReceivedError(
       eventData.putString("description", description);
 
       dispatchEvent(
-          webView,
-          new TopLoadingErrorEvent(webView.getId(), eventData));
+        webView,
+        new TopLoadingErrorEvent(webView.getId(), eventData));
     }
 
     protected void emitFinishEvent(WebView webView, String url) {
       dispatchEvent(
-          webView,
-          new TopLoadingFinishEvent(
-              webView.getId(),
-              createWebViewEvent(webView, url)));
+        webView,
+        new TopLoadingFinishEvent(
+          webView.getId(),
+          createWebViewEvent(webView, url)));
     }
 
     protected WritableMap createWebViewEvent(WebView webView, String url) {
@@ -342,8 +334,8 @@ protected void evaluateJavascriptWithFallback(String script) {
 
     public void callInjectedJavaScript() {
       if (getSettings().getJavaScriptEnabled() &&
-          injectedJS != null &&
-          !TextUtils.isEmpty(injectedJS)) {
+        injectedJS != null &&
+        !TextUtils.isEmpty(injectedJS)) {
         evaluateJavascriptWithFallback("(function() {\n" + injectedJS + ";\n})();");
       }
     }
@@ -366,9 +358,9 @@ public void onReceiveValue(String value) {
         evaluateJavascriptWithFallback("(" +
           "window.originalPostMessage = window.postMessage," +
           "window.postMessage = function(data) {" +
-            BRIDGE_NAME + ".postMessage(String(data));" +
+          BRIDGE_NAME + ".postMessage(String(data));" +
           "}" +
-        ")");
+          ")");
       }
     }
 
@@ -438,8 +430,8 @@ public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermiss
 
     // Fixes broken full-screen modals/galleries due to body height being 0.
     webView.setLayoutParams(
-            new LayoutParams(LayoutParams.MATCH_PARENT,
-                LayoutParams.MATCH_PARENT));
+      new LayoutParams(LayoutParams.MATCH_PARENT,
+        LayoutParams.MATCH_PARENT));
 
     setGeolocationEnabled(webView, false);
     if (ReactBuildConfig.DEBUG && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
@@ -511,7 +503,7 @@ public void setSource(WebView view, @Nullable ReadableMap source) {
         String html = source.getString("html");
         if (source.hasKey("baseUrl")) {
           view.loadDataWithBaseURL(
-              source.getString("baseUrl"), html, HTML_MIME_TYPE, HTML_ENCODING, null);
+            source.getString("baseUrl"), html, HTML_MIME_TYPE, HTML_ENCODING, null);
         } else {
           view.loadData(html, HTML_MIME_TYPE, HTML_ENCODING);
         }
@@ -525,7 +517,7 @@ public void setSource(WebView view, @Nullable ReadableMap source) {
         }
         if (source.hasKey("method")) {
           String method = source.getString("method");
-          if (method.equals(HTTP_METHOD_POST)) {
+          if (method.equalsIgnoreCase(HTTP_METHOD_POST)) {
             byte[] postData = null;
             if (source.hasKey("body")) {
               String body = source.getString("body");
@@ -588,14 +580,21 @@ public void setMixedContentMode(WebView view, @Nullable String mixedContentMode)
 
   @ReactProp(name = "urlPrefixesForDefaultIntent")
   public void setUrlPrefixesForDefaultIntent(
-      WebView view,
-      @Nullable ReadableArray urlPrefixesForDefaultIntent) {
+    WebView view,
+    @Nullable ReadableArray urlPrefixesForDefaultIntent) {
     ReactWebViewClient client = ((ReactWebView) view).getReactWebViewClient();
     if (client != null && urlPrefixesForDefaultIntent != null) {
       client.setUrlPrefixesForDefaultIntent(urlPrefixesForDefaultIntent);
     }
   }
 
+  @ReactProp(name = "allowFileAccess")
+  public void setAllowFileAccess(
+    WebView view,
+    @Nullable Boolean allowFileAccess) {
+    view.getSettings().setAllowFileAccess(allowFileAccess != null && allowFileAccess);
+  }
+
   @ReactProp(name = "geolocationEnabled")
   public void setGeolocationEnabled(
     WebView view,
@@ -626,13 +625,13 @@ protected void addEventEmitters(ThemedReactContext reactContext, WebView view) {
   @Override
   public @Nullable Map<String, Integer> getCommandsMap() {
     return MapBuilder.of(
-        "goBack", COMMAND_GO_BACK,
-        "goForward", COMMAND_GO_FORWARD,
-        "reload", COMMAND_RELOAD,
-        "stopLoading", COMMAND_STOP_LOADING,
-        "postMessage", COMMAND_POST_MESSAGE,
-        "injectJavaScript", COMMAND_INJECT_JAVASCRIPT
-      );
+      "goBack", COMMAND_GO_BACK,
+      "goForward", COMMAND_GO_FORWARD,
+      "reload", COMMAND_RELOAD,
+      "stopLoading", COMMAND_STOP_LOADING,
+      "postMessage", COMMAND_POST_MESSAGE,
+      "injectJavaScript", COMMAND_INJECT_JAVASCRIPT
+    );
   }
 
   @Override
@@ -659,13 +658,13 @@ public void receiveCommand(WebView root, int commandId, @Nullable ReadableArray
             "var event;" +
             "var data = " + eventInitDict.toString() + ";" +
             "try {" +
-              "event = new MessageEvent('message', data);" +
+            "event = new MessageEvent('message', data);" +
             "} catch (e) {" +
-              "event = document.createEvent('MessageEvent');" +
-              "event.initMessageEvent('message', true, true, data.data, data.origin, data.lastEventId, data.source);" +
+            "event = document.createEvent('MessageEvent');" +
+            "event.initMessageEvent('message', true, true, data.data, data.origin, data.lastEventId, data.source);" +
             "}" +
             "document.dispatchEvent(event);" +
-          "})();");
+            "})();");
         } catch (JSONException e) {
           throw new RuntimeException(e);
         }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/WebViewConfig.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/WebViewConfig.java
index 9e6d594ccd30a4..198fad85fb8938 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/WebViewConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/WebViewConfig.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingErrorEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingErrorEvent.java
index 02336a418eb74c..86e1aa058935a1 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingErrorEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingErrorEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingFinishEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingFinishEvent.java
index 088a512606757d..dd12aa877b8096 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingFinishEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingFinishEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingStartEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingStartEvent.java
index 154415d5eaa690..28aae57e5989fd 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingStartEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopLoadingStartEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopMessageEvent.java b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopMessageEvent.java
index 75c26a9346d922..c2f43673b4e01e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopMessageEvent.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/webview/events/TopMessageEvent.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/systrace/BUCK b/ReactAndroid/src/main/java/com/facebook/systrace/BUCK
index 873913277cd367..21006f1842c39a 100644
--- a/ReactAndroid/src/main/java/com/facebook/systrace/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/systrace/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library")
 
 rn_android_library(
     name = "systrace",
diff --git a/ReactAndroid/src/main/java/com/facebook/systrace/Systrace.java b/ReactAndroid/src/main/java/com/facebook/systrace/Systrace.java
index c3576f0b49c20a..8a458482552f09 100644
--- a/ReactAndroid/src/main/java/com/facebook/systrace/Systrace.java
+++ b/ReactAndroid/src/main/java/com/facebook/systrace/Systrace.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/systrace/SystraceMessage.java b/ReactAndroid/src/main/java/com/facebook/systrace/SystraceMessage.java
index 03dec5938b9318..448d972780e219 100644
--- a/ReactAndroid/src/main/java/com/facebook/systrace/SystraceMessage.java
+++ b/ReactAndroid/src/main/java/com/facebook/systrace/SystraceMessage.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/systrace/TraceListener.java b/ReactAndroid/src/main/java/com/facebook/systrace/TraceListener.java
index 27fe3441b5ed96..7c217a22613b69 100644
--- a/ReactAndroid/src/main/java/com/facebook/systrace/TraceListener.java
+++ b/ReactAndroid/src/main/java/com/facebook/systrace/TraceListener.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaAlign.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaAlign.java
index 5687ab9d0a0279..94878fd789b40b 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaAlign.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaAlign.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaBaselineFunction.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaBaselineFunction.java
index 20feae330e7013..0a4dba13334164 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaBaselineFunction.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaBaselineFunction.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaConfig.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaConfig.java
index 128f532850894f..40de7d2cdccf24 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaConfig.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaConfig.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -16,7 +16,7 @@ public class YogaConfig {
   public static int SPACING_TYPE = 1;
 
   static {
-      SoLoader.loadLibrary("yoga");
+    SoLoader.loadLibrary("yoga");
   }
 
   long mNativePointer;
@@ -54,6 +54,11 @@ public void setUseWebDefaults(boolean useWebDefaults) {
     jni_YGConfigSetUseWebDefaults(mNativePointer, useWebDefaults);
   }
 
+  private native void jni_YGConfigSetPrintTreeFlag(long nativePointer, boolean enable);
+  public void setPrintTreeFlag(boolean enable) {
+    jni_YGConfigSetPrintTreeFlag(mNativePointer, enable);
+  }
+
   private native void jni_YGConfigSetPointScaleFactor(long nativePointer, float pixelsInPoint);
   public void setPointScaleFactor(float pixelsInPoint) {
     jni_YGConfigSetPointScaleFactor(mNativePointer, pixelsInPoint);
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
index 68c5c982069b41..61e212efea8996 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -35,4 +35,8 @@ public static boolean isUndefined(float value) {
   public static boolean isUndefined(YogaValue value) {
     return value.unit == YogaUnit.UNDEFINED;
   }
+
+  public static float getUndefined() {
+    return UNDEFINED;
+  }
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDimension.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDimension.java
index 3a950e014dbc3f..2ef2772689bd17 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDimension.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDimension.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDirection.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDirection.java
index ccd46e84a62112..6a5017cfed77b7 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDirection.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDirection.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDisplay.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDisplay.java
index 75c2b687d93f52..3ba4d56c8c0b13 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaDisplay.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaDisplay.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaEdge.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaEdge.java
index 36a893f66cb68c..80a783e7daf644 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaEdge.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaEdge.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaExperimentalFeature.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaExperimentalFeature.java
index 790bd0566e6ec1..33a8389dbf3cab 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaExperimentalFeature.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaExperimentalFeature.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaFlexDirection.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaFlexDirection.java
index 5c66d92fc4fc49..c5f9ab5dae60a4 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaFlexDirection.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaFlexDirection.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaJustify.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaJustify.java
index 13d3a0014574c7..6b1b83f5b2d355 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaJustify.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaJustify.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogLevel.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogLevel.java
index 0cf7f70c37f248..29476d67c548e4 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogLevel.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogLevel.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogger.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogger.java
index 6d1a6a1e9dc472..4f617004b96b7c 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogger.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaLogger.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureFunction.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureFunction.java
index cc54caeca7fce2..1e116424fdc6f0 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureFunction.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureFunction.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureMode.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureMode.java
index 5cfc24a4b3220e..24399f6288cebb 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureMode.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureMode.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureOutput.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureOutput.java
index e68af410dd58eb..9dfe4639d3de90 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureOutput.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaMeasureOutput.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNode.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNode.java
index 7c03e718117df6..7dd2694745fdb0 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNode.java
@@ -1,11 +1,10 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
  *
  */
-
 package com.facebook.yoga;
 
 import com.facebook.proguard.annotations.DoNotStrip;
@@ -18,7 +17,7 @@
 public class YogaNode implements Cloneable {
 
   static {
-      SoLoader.loadLibrary("yoga");
+    SoLoader.loadLibrary("yoga");
   }
 
   /**
@@ -117,7 +116,7 @@ public void freeNatives() {
     }
   }
 
-  private native void jni_YGNodeReset(long nativePointer);
+  private static native void jni_YGNodeReset(long nativePointer);
   public void reset() {
     mEdgeSetFlag = 0;
     mHasSetPosition = false;
@@ -160,7 +159,8 @@ public YogaNode getChildAt(int i) {
     return mChildren.get(i);
   }
 
-  private native void jni_YGNodeInsertChild(long nativePointer, long childPointer, int index);
+  private static native void jni_YGNodeInsertChild(long nativePointer, long childPointer, int index);
+
   public void addChildAt(YogaNode child, int i) {
     if (child.mOwner != null) {
       throw new IllegalStateException("Child already has a parent, it must be removed first.");
@@ -174,7 +174,7 @@ public void addChildAt(YogaNode child, int i) {
     jni_YGNodeInsertChild(mNativePointer, child.mNativePointer, i);
   }
 
-  private native void jni_YGNodeInsertSharedChild(long nativePointer, long childPointer, int index);
+  private static native void jni_YGNodeInsertSharedChild(long nativePointer, long childPointer, int index);
 
   public void addSharedChildAt(YogaNode child, int i) {
     if (mChildren == null) {
@@ -185,7 +185,19 @@ public void addSharedChildAt(YogaNode child, int i) {
     jni_YGNodeInsertSharedChild(mNativePointer, child.mNativePointer, i);
   }
 
-  private native void jni_YGNodeSetOwner(long nativePointer, long newOwnerNativePointer);
+  private static native void jni_YGNodeSetIsReferenceBaseline(long nativePointer, boolean isReferenceBaseline);
+
+  public void setIsReferenceBaseline(boolean isReferenceBaseline) {
+    jni_YGNodeSetIsReferenceBaseline(mNativePointer, isReferenceBaseline);
+  }
+
+  private static native boolean jni_YGNodeIsReferenceBaseline(long nativePointer);
+
+  public boolean isReferenceBaseline() {
+    return jni_YGNodeIsReferenceBaseline(mNativePointer);
+  }
+
+  private static native void jni_YGNodeSetOwner(long nativePointer, long newOwnerNativePointer);
 
   private native long jni_YGNodeClone(long nativePointer, Object newNode);
 
@@ -197,7 +209,7 @@ public YogaNode clone() {
 
       if (mChildren != null) {
         for (YogaNode child : mChildren) {
-          child.jni_YGNodeSetOwner(child.mNativePointer, 0);
+          YogaNode.jni_YGNodeSetOwner(child.mNativePointer, 0);
           child.mOwner = null;
         }
       }
@@ -232,14 +244,14 @@ public YogaNode cloneWithNewChildren() {
     }
   }
 
-  private native void jni_YGNodeClearChildren(long nativePointer);
+  private static native void jni_YGNodeClearChildren(long nativePointer);
 
   private void clearChildren() {
     mChildren = null;
     jni_YGNodeClearChildren(mNativePointer);
   }
 
-  private native void jni_YGNodeRemoveChild(long nativePointer, long childPointer);
+  private static native void jni_YGNodeRemoveChild(long nativePointer, long childPointer);
   public YogaNode removeChildAt(int i) {
     if (mChildren == null) {
       throw new IllegalStateException(
@@ -275,7 +287,7 @@ public int indexOf(YogaNode child) {
     return mChildren == null ? -1 : mChildren.indexOf(child);
   }
 
-  private native void jni_YGNodeCalculateLayout(long nativePointer, float width, float height);
+  private static native void jni_YGNodeCalculateLayout(long nativePointer, float width, float height);
   public void calculateLayout(float width, float height) {
     jni_YGNodeCalculateLayout(mNativePointer, width, height);
   }
@@ -284,23 +296,23 @@ public boolean hasNewLayout() {
     return mHasNewLayout;
   }
 
-  private native void jni_YGNodeMarkDirty(long nativePointer);
+  private static native void jni_YGNodeMarkDirty(long nativePointer);
   public void dirty() {
     jni_YGNodeMarkDirty(mNativePointer);
   }
 
-  private native void jni_YGNodeMarkDirtyAndPropogateToDescendants(long nativePointer);
+  private static native void jni_YGNodeMarkDirtyAndPropogateToDescendants(long nativePointer);
 
   public void dirtyAllDescendants() {
     jni_YGNodeMarkDirtyAndPropogateToDescendants(mNativePointer);
   }
 
-  private native boolean jni_YGNodeIsDirty(long nativePointer);
+  private static native boolean jni_YGNodeIsDirty(long nativePointer);
   public boolean isDirty() {
     return jni_YGNodeIsDirty(mNativePointer);
   }
 
-  private native void jni_YGNodeCopyStyle(long dstNativePointer, long srcNativePointer);
+  private static native void jni_YGNodeCopyStyle(long dstNativePointer, long srcNativePointer);
   public void copyStyle(YogaNode srcNode) {
     jni_YGNodeCopyStyle(mNativePointer, srcNode.mNativePointer);
   }
@@ -309,147 +321,147 @@ public void markLayoutSeen() {
     mHasNewLayout = false;
   }
 
-  private native int jni_YGNodeStyleGetDirection(long nativePointer);
+  private static native int jni_YGNodeStyleGetDirection(long nativePointer);
   public YogaDirection getStyleDirection() {
     return YogaDirection.fromInt(jni_YGNodeStyleGetDirection(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetDirection(long nativePointer, int direction);
+  private static native void jni_YGNodeStyleSetDirection(long nativePointer, int direction);
   public void setDirection(YogaDirection direction) {
     jni_YGNodeStyleSetDirection(mNativePointer, direction.intValue());
   }
 
-  private native int jni_YGNodeStyleGetFlexDirection(long nativePointer);
+  private static native int jni_YGNodeStyleGetFlexDirection(long nativePointer);
   public YogaFlexDirection getFlexDirection() {
     return YogaFlexDirection.fromInt(jni_YGNodeStyleGetFlexDirection(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetFlexDirection(long nativePointer, int flexDirection);
+  private static native void jni_YGNodeStyleSetFlexDirection(long nativePointer, int flexDirection);
   public void setFlexDirection(YogaFlexDirection flexDirection) {
     jni_YGNodeStyleSetFlexDirection(mNativePointer, flexDirection.intValue());
   }
 
-  private native int jni_YGNodeStyleGetJustifyContent(long nativePointer);
+  private static native int jni_YGNodeStyleGetJustifyContent(long nativePointer);
   public YogaJustify getJustifyContent() {
     return YogaJustify.fromInt(jni_YGNodeStyleGetJustifyContent(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetJustifyContent(long nativePointer, int justifyContent);
+  private static native void jni_YGNodeStyleSetJustifyContent(long nativePointer, int justifyContent);
   public void setJustifyContent(YogaJustify justifyContent) {
     jni_YGNodeStyleSetJustifyContent(mNativePointer, justifyContent.intValue());
   }
 
-  private native int jni_YGNodeStyleGetAlignItems(long nativePointer);
+  private static native int jni_YGNodeStyleGetAlignItems(long nativePointer);
   public YogaAlign getAlignItems() {
     return YogaAlign.fromInt(jni_YGNodeStyleGetAlignItems(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetAlignItems(long nativePointer, int alignItems);
+  private static native void jni_YGNodeStyleSetAlignItems(long nativePointer, int alignItems);
   public void setAlignItems(YogaAlign alignItems) {
     jni_YGNodeStyleSetAlignItems(mNativePointer, alignItems.intValue());
   }
 
-  private native int jni_YGNodeStyleGetAlignSelf(long nativePointer);
+  private static native int jni_YGNodeStyleGetAlignSelf(long nativePointer);
   public YogaAlign getAlignSelf() {
     return YogaAlign.fromInt(jni_YGNodeStyleGetAlignSelf(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetAlignSelf(long nativePointer, int alignSelf);
+  private static native void jni_YGNodeStyleSetAlignSelf(long nativePointer, int alignSelf);
   public void setAlignSelf(YogaAlign alignSelf) {
     jni_YGNodeStyleSetAlignSelf(mNativePointer, alignSelf.intValue());
   }
 
-  private native int jni_YGNodeStyleGetAlignContent(long nativePointer);
+  private static native int jni_YGNodeStyleGetAlignContent(long nativePointer);
   public YogaAlign getAlignContent() {
     return YogaAlign.fromInt(jni_YGNodeStyleGetAlignContent(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetAlignContent(long nativePointer, int alignContent);
+  private static native void jni_YGNodeStyleSetAlignContent(long nativePointer, int alignContent);
   public void setAlignContent(YogaAlign alignContent) {
     jni_YGNodeStyleSetAlignContent(mNativePointer, alignContent.intValue());
   }
 
-  private native int jni_YGNodeStyleGetPositionType(long nativePointer);
+  private static native int jni_YGNodeStyleGetPositionType(long nativePointer);
   public YogaPositionType getPositionType() {
     return YogaPositionType.fromInt(jni_YGNodeStyleGetPositionType(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetPositionType(long nativePointer, int positionType);
+  private static native void jni_YGNodeStyleSetPositionType(long nativePointer, int positionType);
   public void setPositionType(YogaPositionType positionType) {
     jni_YGNodeStyleSetPositionType(mNativePointer, positionType.intValue());
   }
 
-  private native void jni_YGNodeStyleSetFlexWrap(long nativePointer, int wrapType);
+  private static native void jni_YGNodeStyleSetFlexWrap(long nativePointer, int wrapType);
   public void setWrap(YogaWrap flexWrap) {
     jni_YGNodeStyleSetFlexWrap(mNativePointer, flexWrap.intValue());
   }
 
-  private native int jni_YGNodeStyleGetOverflow(long nativePointer);
+  private static native int jni_YGNodeStyleGetOverflow(long nativePointer);
   public YogaOverflow getOverflow() {
     return YogaOverflow.fromInt(jni_YGNodeStyleGetOverflow(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetOverflow(long nativePointer, int overflow);
+  private static native void jni_YGNodeStyleSetOverflow(long nativePointer, int overflow);
   public void setOverflow(YogaOverflow overflow) {
     jni_YGNodeStyleSetOverflow(mNativePointer, overflow.intValue());
   }
 
-  private native int jni_YGNodeStyleGetDisplay(long nativePointer);
+  private static native int jni_YGNodeStyleGetDisplay(long nativePointer);
   public YogaDisplay getDisplay() {
     return YogaDisplay.fromInt(jni_YGNodeStyleGetDisplay(mNativePointer));
   }
 
-  private native void jni_YGNodeStyleSetDisplay(long nativePointer, int display);
+  private static native void jni_YGNodeStyleSetDisplay(long nativePointer, int display);
   public void setDisplay(YogaDisplay display) {
     jni_YGNodeStyleSetDisplay(mNativePointer, display.intValue());
   }
 
-  private native void jni_YGNodeStyleSetFlex(long nativePointer, float flex);
+  private static native void jni_YGNodeStyleSetFlex(long nativePointer, float flex);
   public void setFlex(float flex) {
     jni_YGNodeStyleSetFlex(mNativePointer, flex);
   }
 
-  private native float jni_YGNodeStyleGetFlexGrow(long nativePointer);
+  private static native float jni_YGNodeStyleGetFlexGrow(long nativePointer);
   public float getFlexGrow() {
     return jni_YGNodeStyleGetFlexGrow(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetFlexGrow(long nativePointer, float flexGrow);
+  private static native void jni_YGNodeStyleSetFlexGrow(long nativePointer, float flexGrow);
   public void setFlexGrow(float flexGrow) {
     jni_YGNodeStyleSetFlexGrow(mNativePointer, flexGrow);
   }
 
-  private native float jni_YGNodeStyleGetFlexShrink(long nativePointer);
+  private static native float jni_YGNodeStyleGetFlexShrink(long nativePointer);
   public float getFlexShrink() {
     return jni_YGNodeStyleGetFlexShrink(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetFlexShrink(long nativePointer, float flexShrink);
+  private static native void jni_YGNodeStyleSetFlexShrink(long nativePointer, float flexShrink);
   public void setFlexShrink(float flexShrink) {
     jni_YGNodeStyleSetFlexShrink(mNativePointer, flexShrink);
   }
 
-  private native Object jni_YGNodeStyleGetFlexBasis(long nativePointer);
+  private static native Object jni_YGNodeStyleGetFlexBasis(long nativePointer);
   public YogaValue getFlexBasis() {
     return (YogaValue) jni_YGNodeStyleGetFlexBasis(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetFlexBasis(long nativePointer, float flexBasis);
+  private static native void jni_YGNodeStyleSetFlexBasis(long nativePointer, float flexBasis);
   public void setFlexBasis(float flexBasis) {
     jni_YGNodeStyleSetFlexBasis(mNativePointer, flexBasis);
   }
 
-  private native void jni_YGNodeStyleSetFlexBasisPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetFlexBasisPercent(long nativePointer, float percent);
   public void setFlexBasisPercent(float percent) {
     jni_YGNodeStyleSetFlexBasisPercent(mNativePointer, percent);
   }
 
-  private native void jni_YGNodeStyleSetFlexBasisAuto(long nativePointer);
+  private static native void jni_YGNodeStyleSetFlexBasisAuto(long nativePointer);
   public void setFlexBasisAuto() {
     jni_YGNodeStyleSetFlexBasisAuto(mNativePointer);
   }
 
-  private native Object jni_YGNodeStyleGetMargin(long nativePointer, int edge);
+  private static native Object jni_YGNodeStyleGetMargin(long nativePointer, int edge);
   public YogaValue getMargin(YogaEdge edge) {
     if (!((mEdgeSetFlag & MARGIN) == MARGIN)) {
       return YogaValue.UNDEFINED;
@@ -457,25 +469,25 @@ public YogaValue getMargin(YogaEdge edge) {
     return (YogaValue) jni_YGNodeStyleGetMargin(mNativePointer, edge.intValue());
   }
 
-  private native void jni_YGNodeStyleSetMargin(long nativePointer, int edge, float margin);
+  private static native void jni_YGNodeStyleSetMargin(long nativePointer, int edge, float margin);
   public void setMargin(YogaEdge edge, float margin) {
     mEdgeSetFlag |= MARGIN;
     jni_YGNodeStyleSetMargin(mNativePointer, edge.intValue(), margin);
   }
 
-  private native void jni_YGNodeStyleSetMarginPercent(long nativePointer, int edge, float percent);
+  private static native void jni_YGNodeStyleSetMarginPercent(long nativePointer, int edge, float percent);
   public void setMarginPercent(YogaEdge edge, float percent) {
     mEdgeSetFlag |= MARGIN;
     jni_YGNodeStyleSetMarginPercent(mNativePointer, edge.intValue(), percent);
   }
 
-  private native void jni_YGNodeStyleSetMarginAuto(long nativePointer, int edge);
+  private static native void jni_YGNodeStyleSetMarginAuto(long nativePointer, int edge);
   public void setMarginAuto(YogaEdge edge) {
     mEdgeSetFlag |= MARGIN;
     jni_YGNodeStyleSetMarginAuto(mNativePointer, edge.intValue());
   }
 
-  private native Object jni_YGNodeStyleGetPadding(long nativePointer, int edge);
+  private static native Object jni_YGNodeStyleGetPadding(long nativePointer, int edge);
   public YogaValue getPadding(YogaEdge edge) {
     if (!((mEdgeSetFlag & PADDING) == PADDING)) {
       return YogaValue.UNDEFINED;
@@ -483,19 +495,19 @@ public YogaValue getPadding(YogaEdge edge) {
     return (YogaValue) jni_YGNodeStyleGetPadding(mNativePointer, edge.intValue());
   }
 
-  private native void jni_YGNodeStyleSetPadding(long nativePointer, int edge, float padding);
+  private static native void jni_YGNodeStyleSetPadding(long nativePointer, int edge, float padding);
   public void setPadding(YogaEdge edge, float padding) {
     mEdgeSetFlag |= PADDING;
     jni_YGNodeStyleSetPadding(mNativePointer, edge.intValue(), padding);
   }
 
-  private native void jni_YGNodeStyleSetPaddingPercent(long nativePointer, int edge, float percent);
+  private static native void jni_YGNodeStyleSetPaddingPercent(long nativePointer, int edge, float percent);
   public void setPaddingPercent(YogaEdge edge, float percent) {
     mEdgeSetFlag |= PADDING;
     jni_YGNodeStyleSetPaddingPercent(mNativePointer, edge.intValue(), percent);
   }
 
-  private native float jni_YGNodeStyleGetBorder(long nativePointer, int edge);
+  private static native float jni_YGNodeStyleGetBorder(long nativePointer, int edge);
   public float getBorder(YogaEdge edge) {
     if (!((mEdgeSetFlag & BORDER) == BORDER)) {
       return YogaConstants.UNDEFINED;
@@ -503,13 +515,13 @@ public float getBorder(YogaEdge edge) {
     return jni_YGNodeStyleGetBorder(mNativePointer, edge.intValue());
   }
 
-  private native void jni_YGNodeStyleSetBorder(long nativePointer, int edge, float border);
+  private static native void jni_YGNodeStyleSetBorder(long nativePointer, int edge, float border);
   public void setBorder(YogaEdge edge, float border) {
     mEdgeSetFlag |= BORDER;
     jni_YGNodeStyleSetBorder(mNativePointer, edge.intValue(), border);
   }
 
-  private native Object jni_YGNodeStyleGetPosition(long nativePointer, int edge);
+  private static native Object jni_YGNodeStyleGetPosition(long nativePointer, int edge);
   public YogaValue getPosition(YogaEdge edge) {
     if (!mHasSetPosition) {
       return YogaValue.UNDEFINED;
@@ -517,124 +529,124 @@ public YogaValue getPosition(YogaEdge edge) {
     return (YogaValue) jni_YGNodeStyleGetPosition(mNativePointer, edge.intValue());
   }
 
-  private native void jni_YGNodeStyleSetPosition(long nativePointer, int edge, float position);
+  private static native void jni_YGNodeStyleSetPosition(long nativePointer, int edge, float position);
   public void setPosition(YogaEdge edge, float position) {
     mHasSetPosition = true;
     jni_YGNodeStyleSetPosition(mNativePointer, edge.intValue(), position);
   }
 
-  private native void jni_YGNodeStyleSetPositionPercent(long nativePointer, int edge, float percent);
+  private static native void jni_YGNodeStyleSetPositionPercent(long nativePointer, int edge, float percent);
   public void setPositionPercent(YogaEdge edge, float percent) {
     mHasSetPosition = true;
     jni_YGNodeStyleSetPositionPercent(mNativePointer, edge.intValue(), percent);
   }
 
-  private native Object jni_YGNodeStyleGetWidth(long nativePointer);
+  private static native Object jni_YGNodeStyleGetWidth(long nativePointer);
   public YogaValue getWidth() {
     return (YogaValue) jni_YGNodeStyleGetWidth(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetWidth(long nativePointer, float width);
+  private static native void jni_YGNodeStyleSetWidth(long nativePointer, float width);
   public void setWidth(float width) {
     jni_YGNodeStyleSetWidth(mNativePointer, width);
   }
 
-  private native void jni_YGNodeStyleSetWidthPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetWidthPercent(long nativePointer, float percent);
   public void setWidthPercent(float percent) {
     jni_YGNodeStyleSetWidthPercent(mNativePointer, percent);
   }
 
-  private native void jni_YGNodeStyleSetWidthAuto(long nativePointer);
+  private static native void jni_YGNodeStyleSetWidthAuto(long nativePointer);
   public void setWidthAuto() {
     jni_YGNodeStyleSetWidthAuto(mNativePointer);
   }
 
-  private native Object jni_YGNodeStyleGetHeight(long nativePointer);
+  private static native Object jni_YGNodeStyleGetHeight(long nativePointer);
   public YogaValue getHeight() {
     return (YogaValue) jni_YGNodeStyleGetHeight(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetHeight(long nativePointer, float height);
+  private static native void jni_YGNodeStyleSetHeight(long nativePointer, float height);
   public void setHeight(float height) {
     jni_YGNodeStyleSetHeight(mNativePointer, height);
   }
 
-  private native void jni_YGNodeStyleSetHeightPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetHeightPercent(long nativePointer, float percent);
   public void setHeightPercent(float percent) {
     jni_YGNodeStyleSetHeightPercent(mNativePointer, percent);
   }
 
-  private native void jni_YGNodeStyleSetHeightAuto(long nativePointer);
+  private static native void jni_YGNodeStyleSetHeightAuto(long nativePointer);
   public void setHeightAuto() {
     jni_YGNodeStyleSetHeightAuto(mNativePointer);
   }
 
-  private native Object jni_YGNodeStyleGetMinWidth(long nativePointer);
+  private static native Object jni_YGNodeStyleGetMinWidth(long nativePointer);
   public YogaValue getMinWidth() {
     return (YogaValue) jni_YGNodeStyleGetMinWidth(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetMinWidth(long nativePointer, float minWidth);
+  private static native void jni_YGNodeStyleSetMinWidth(long nativePointer, float minWidth);
   public void setMinWidth(float minWidth) {
     jni_YGNodeStyleSetMinWidth(mNativePointer, minWidth);
   }
 
-  private native void jni_YGNodeStyleSetMinWidthPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetMinWidthPercent(long nativePointer, float percent);
   public void setMinWidthPercent(float percent) {
     jni_YGNodeStyleSetMinWidthPercent(mNativePointer, percent);
   }
 
-  private native Object jni_YGNodeStyleGetMinHeight(long nativePointer);
+  private static native Object jni_YGNodeStyleGetMinHeight(long nativePointer);
   public YogaValue getMinHeight() {
     return (YogaValue) jni_YGNodeStyleGetMinHeight(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetMinHeight(long nativePointer, float minHeight);
+  private static native void jni_YGNodeStyleSetMinHeight(long nativePointer, float minHeight);
   public void setMinHeight(float minHeight) {
     jni_YGNodeStyleSetMinHeight(mNativePointer, minHeight);
   }
 
-  private native void jni_YGNodeStyleSetMinHeightPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetMinHeightPercent(long nativePointer, float percent);
   public void setMinHeightPercent(float percent) {
     jni_YGNodeStyleSetMinHeightPercent(mNativePointer, percent);
   }
 
-  private native Object jni_YGNodeStyleGetMaxWidth(long nativePointer);
+  private static native Object jni_YGNodeStyleGetMaxWidth(long nativePointer);
   public YogaValue getMaxWidth() {
     return (YogaValue) jni_YGNodeStyleGetMaxWidth(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetMaxWidth(long nativePointer, float maxWidth);
+  private static native void jni_YGNodeStyleSetMaxWidth(long nativePointer, float maxWidth);
   public void setMaxWidth(float maxWidth) {
     jni_YGNodeStyleSetMaxWidth(mNativePointer, maxWidth);
   }
 
-  private native void jni_YGNodeStyleSetMaxWidthPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetMaxWidthPercent(long nativePointer, float percent);
   public void setMaxWidthPercent(float percent) {
     jni_YGNodeStyleSetMaxWidthPercent(mNativePointer, percent);
   }
 
-  private native Object jni_YGNodeStyleGetMaxHeight(long nativePointer);
+  private static native Object jni_YGNodeStyleGetMaxHeight(long nativePointer);
   public YogaValue getMaxHeight() {
     return (YogaValue) jni_YGNodeStyleGetMaxHeight(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetMaxHeight(long nativePointer, float maxheight);
+  private static native void jni_YGNodeStyleSetMaxHeight(long nativePointer, float maxheight);
   public void setMaxHeight(float maxheight) {
     jni_YGNodeStyleSetMaxHeight(mNativePointer, maxheight);
   }
 
-  private native void jni_YGNodeStyleSetMaxHeightPercent(long nativePointer, float percent);
+  private static native void jni_YGNodeStyleSetMaxHeightPercent(long nativePointer, float percent);
   public void setMaxHeightPercent(float percent) {
     jni_YGNodeStyleSetMaxHeightPercent(mNativePointer, percent);
   }
 
-  private native float jni_YGNodeStyleGetAspectRatio(long nativePointer);
+  private static native float jni_YGNodeStyleGetAspectRatio(long nativePointer);
   public float getAspectRatio() {
     return jni_YGNodeStyleGetAspectRatio(mNativePointer);
   }
 
-  private native void jni_YGNodeStyleSetAspectRatio(long nativePointer, float aspectRatio);
+  private static native void jni_YGNodeStyleSetAspectRatio(long nativePointer, float aspectRatio);
   public void setAspectRatio(float aspectRatio) {
     jni_YGNodeStyleSetAspectRatio(mNativePointer, aspectRatio);
   }
@@ -720,7 +732,7 @@ public YogaDirection getLayoutDirection() {
     return YogaDirection.fromInt(mLayoutDirection);
   }
 
-  private native void jni_YGNodeSetHasMeasureFunc(long nativePointer, boolean hasMeasureFunc);
+  private static native void jni_YGNodeSetHasMeasureFunc(long nativePointer, boolean hasMeasureFunc);
   public void setMeasureFunction(YogaMeasureFunction measureFunction) {
     mMeasureFunction = measureFunction;
     jni_YGNodeSetHasMeasureFunc(mNativePointer, measureFunction != null);
@@ -745,7 +757,7 @@ public final long measure(float width, int widthMode, float height, int heightMo
         YogaMeasureMode.fromInt(heightMode));
   }
 
-  private native void jni_YGNodeSetHasBaselineFunc(long nativePointer, boolean hasMeasureFunc);
+  private static native void jni_YGNodeSetHasBaselineFunc(long nativePointer, boolean hasMeasureFunc);
   public void setBaselineFunction(YogaBaselineFunction baselineFunction) {
     mBaselineFunction = baselineFunction;
     jni_YGNodeSetHasBaselineFunc(mNativePointer, baselineFunction != null);
@@ -768,7 +780,7 @@ public Object getData() {
     return mData;
   }
 
-  private native void jni_YGNodePrint(long nativePointer);
+  private static native void jni_YGNodePrint(long nativePointer);
 
   /**
    * Use the set logger (defaults to adb log) to print out the styles, children, and computed
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeCloneFunction.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeCloneFunction.java
index ccf7f5c5c6590a..53a8feef2b84ae 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeCloneFunction.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeCloneFunction.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2017-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeType.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeType.java
index 7eb7246c5bac12..28db7f1ff0ab25 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeType.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaNodeType.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaOverflow.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaOverflow.java
index 85bc8b20a79ad4..8dec3649e0512b 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaOverflow.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaOverflow.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaPositionType.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaPositionType.java
index 17073f47154483..0392e6f8541bf6 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaPositionType.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaPositionType.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaPrintOptions.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaPrintOptions.java
index 3b59960dfcc089..fb1a6b1434bbca 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaPrintOptions.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaPrintOptions.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaUnit.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaUnit.java
index e4002dd09ab6fb..b9a98e95491e68 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaUnit.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaUnit.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaValue.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaValue.java
index 27781a154f07db..947cfcc7c72277 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaValue.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaValue.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/java/com/facebook/yoga/YogaWrap.java b/ReactAndroid/src/main/java/com/facebook/yoga/YogaWrap.java
index 3c10dd3aed6a4f..45f1220cb64b63 100644
--- a/ReactAndroid/src/main/java/com/facebook/yoga/YogaWrap.java
+++ b/ReactAndroid/src/main/java/com/facebook/yoga/YogaWrap.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/Application.mk b/ReactAndroid/src/main/jni/Application.mk
index 612e487583386f..8f34cb6542f210 100644
--- a/ReactAndroid/src/main/jni/Application.mk
+++ b/ReactAndroid/src/main/jni/Application.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 APP_BUILD_SCRIPT := Android.mk
 
 APP_ABI := armeabi-v7a x86
@@ -5,7 +10,19 @@ APP_PLATFORM := android-16
 
 APP_MK_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
 
-NDK_MODULE_PATH := $(APP_MK_DIR)$(HOST_DIRSEP)$(THIRD_PARTY_NDK_DIR)$(HOST_DIRSEP)$(REACT_COMMON_DIR)$(HOST_DIRSEP)$(APP_MK_DIR)first-party$(HOST_DIRSEP)$(THIRD_PARTY_NDK_SRC_DIR)$(HOST_DIRSEP)
+# What is NDK_MODULE_PATH?
+#   This is comparable to the PATH environment variable in Linux. The purpose
+#   of NDK_MODULE_PATH is to provide a list of directories that contain modules
+#   we want ndk-build to compile.
+#
+# What is HOST_DIRSEP?
+#   In PATH, the directories are separated by a ':'.
+#   In NDK_MODULE_PATH, the directories are separated by $(HOST_DIRSEP).
+#
+# Where are APP_MK_DIR, THIRD_PARTY_NDK_DIR, etc. defined?
+#   The directories inside NDK_MODULE_PATH (ex: APP_MK_DIR, THIRD_PARTY_NDK_DIR,
+#   etc.) are defined inside build.gradle.
+NDK_MODULE_PATH := $(APP_MK_DIR)$(HOST_DIRSEP)$(THIRD_PARTY_NDK_DIR)$(HOST_DIRSEP)$(REACT_COMMON_DIR)$(HOST_DIRSEP)$(APP_MK_DIR)first-party$(HOST_DIRSEP)$(REACT_SRC_DIR)$(REACT_V8_DIR)$(HOST_DIRSEP)$(REACT_V8_DIR)/../v8base$(HOST_DIRSEP)$(REACT_V8_DIR)/../v8platform$(HOST_DIRSEP)$(THIRD_PARTY_NDK_SRC_DIR)$(HOST_DIRSEP)
 
 APP_STL := gnustl_shared
 
diff --git a/ReactAndroid/src/main/jni/first-party/fb/Android.mk b/ReactAndroid/src/main/jni/first-party/fb/Android.mk
index 87789b6af0bdbd..09e6f7c4b78251 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/Android.mk
+++ b/ReactAndroid/src/main/jni/first-party/fb/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
diff --git a/ReactAndroid/src/main/jni/first-party/fb/BUCK b/ReactAndroid/src/main/jni/first-party/fb/BUCK
index a5c9dc0ab6cfb8..b955749c89bcfc 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/fb/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "JNI_TARGET", "subdir_glob", "oss_cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "JNI_TARGET", "oss_cxx_library", "subdir_glob")
 
 # This target is only used in open source
 oss_cxx_library(
diff --git a/ReactAndroid/src/main/jni/first-party/fb/assert.cpp b/ReactAndroid/src/main/jni/first-party/fb/assert.cpp
index 9e584e11b7c8c4..8cf2ed50dc2048 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/assert.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/assert.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ALog.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ALog.h
index 5f231cb7c8f20f..164288b42fa653 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ALog.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ALog.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Build.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Build.h
index 394f9d6e134635..b218a285ad9b6c 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Build.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Build.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Countable.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Countable.h
index 1fafba36ae85e9..01afe983edf6a2 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Countable.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Countable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Environment.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Environment.h
index 319e96ecb08628..ef798b5d7c6b5f 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/Environment.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/Environment.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ProgramLocation.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ProgramLocation.h
index 92b45406f3c471..cc23ee71b0456b 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ProgramLocation.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ProgramLocation.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/RefPtr.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/RefPtr.h
index ee19960fa3547d..e39bd0264808fd 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/RefPtr.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/RefPtr.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/StaticInitialized.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/StaticInitialized.h
index c5ecc2fedce515..566e02cd48ba9b 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/StaticInitialized.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/StaticInitialized.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ThreadLocal.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ThreadLocal.h
index 1b868c44fe61dc..675950fcb3df7e 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/ThreadLocal.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/ThreadLocal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/assert.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/assert.h
index ea0c3f65edb258..a6b747f7f08400 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/assert.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/assert.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni.h
index e67aa1641313bb..49e4f502a4a3f7 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Boxed.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Boxed.h
index 595bfacfe6d108..58f4c9346bc018 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Boxed.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Boxed.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ByteBuffer.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ByteBuffer.h
index 2f160839f5b44b..3218de8b6ddf31 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ByteBuffer.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ByteBuffer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Common.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Common.h
index a7775db6d2efb7..0a6e85217d7970 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Common.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Common.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Context.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Context.h
index 726a25333f0ced..4505842c6c26b6 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Context.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Context.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses-inl.h
index 147f885684af3d..a3d19d6ea96395 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
index abfe45ce0d0514..169c621f2cee53 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/CoreClasses.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -235,11 +235,18 @@ class FBEXPORT JClass : public JavaClass<JClass, JObject, jclass> {
   ///     makeNativeMethod("nativeMethodWithExplicitDescriptor",
   ///                      "(Lcom/facebook/example/MyClass;)V",
   ///                      methodWithExplicitDescriptor),
+  ///     makeCriticalNativeMethod("criticalNativeMethodWithAutomaticDescriptor",
+  ///                              criticalNativeMethodWithAutomaticDescriptor),
+  ///     makeCriticalNativeMethod("criticalNativeMethodWithExplicitDescriptor",
+  ///                              "(IIF)Z",
+  ///                              criticalNativeMethodWithExplicitDescriptor),
   ///  });
   ///
   /// By default, C++ exceptions raised will be converted to Java exceptions.
   /// To avoid this and get the "standard" JNI behavior of a crash when a C++
   /// exception is crashing out of the JNI method, declare the method noexcept.
+  /// This does NOT apply to critical native methods, where exceptions causes
+  /// a crash.
   void registerNatives(std::initializer_list<NativeMethod> methods);
 
   /// Check to see if the class is assignable from another class
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Exceptions.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Exceptions.h
index 689b9be3463ac0..213ec5c7125775 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Exceptions.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Exceptions.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/File.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/File.h
index 74c752a0785ec7..9b52183a9e2186 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/File.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/File.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Hybrid.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Hybrid.h
index 7ca5016a80dc67..fba774b675c3d3 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Hybrid.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Hybrid.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator-inl.h
index c056e16af15695..8e7083c8f92ce9 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
index 0da2c36237d0bb..1fae26fb21efec 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Iterator.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JThread.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JThread.h
index 1bb61199fbf0a9..6bcf9641207214 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JThread.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JThread.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JWeakReference.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JWeakReference.h
index 941bc3b0d428ca..f235980ace8714 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JWeakReference.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/JWeakReference.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-forward.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-forward.h
index 60dfee44d34ff2..833acc04b022c8 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-forward.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-forward.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-inl.h
index f1232172f59e50..e3c33921ce4e65 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta.h
index e9717bf7fd8bb3..ec5eb6ef17f288 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Meta.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/MetaConvert.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/MetaConvert.h
index 7750304bd65685..763b8e78f59fdf 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/MetaConvert.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/MetaConvert.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/NativeRunnable.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/NativeRunnable.h
index 0502e36b5a1139..015c42e5ab3cc5 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/NativeRunnable.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/NativeRunnable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReadableByteChannel.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReadableByteChannel.h
index f895a3e6ff6573..69b8f2aae31488 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReadableByteChannel.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReadableByteChannel.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators-inl.h
index b78f66040230dd..f3303078b0407c 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators.h
index a971263ad0d9c2..7ccdc5dbd687e9 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/ReferenceAllocators.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-forward.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-forward.h
index 58ce511d50e56e..78b4f3273b97d0 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-forward.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-forward.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-inl.h
index fc6c689ea40b77..53d4f4488d2b49 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References.h
index 39cc71a2498c6d..109b8cd46606f3 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/References.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration-inl.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration-inl.h
index ce0636e014747b..e08533c52c5336 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration-inl.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration-inl.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -142,6 +142,25 @@ inline std::string makeDescriptor(R (C::*)(Args... args)) {
   return jmethod_traits_from_cxx<R(Args...)>::descriptor();
 }
 
+template<typename R, typename ...Args>
+template<R(*func)(Args...)>
+JNI_ENTRY_POINT R CriticalMethod<R(*)(Args...)>::call(alias_ref<jclass>, Args... args) {
+  static_assert(
+    IsJniPrimitive<R>() || std::is_void<R>(),
+    "Critical Native Methods may only return primitive JNI types, or void.");
+  static_assert(
+    AreJniPrimitives<Args...>(),
+    "Critical Native Methods may only use primitive JNI types as parameters");
+
+  return func(std::forward<Args>(args)...);
+}
+
+template<typename R, typename ...Args>
+template<R(*func)(Args...)>
+inline std::string CriticalMethod<R(*)(Args...)>::desc() {
+  return makeDescriptor(call<func>);
+}
+
 }
 
 }}
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration.h
index cae1ab48b82376..344f336f8c908c 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/Registration.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -44,6 +44,18 @@ std::string makeDescriptor(R (*func)(alias_ref<C>, Args... args));
 template<typename R, typename C, typename... Args>
 std::string makeDescriptor(R (C::*method0)(Args... args));
 
+template<typename F>
+struct CriticalMethod;
+
+template<typename R, typename ...Args>
+struct CriticalMethod<R(*)(Args...)> {
+  template<R(*func)(Args...)>
+  static R call(alias_ref<jclass>, Args... args);
+
+  template<R(*func)(Args...)>
+  inline static std::string desc();
+};
+
 }
 
 // We have to use macros here, because the func needs to be used
@@ -66,6 +78,35 @@ std::string makeDescriptor(R (C::*method0)(Args... args));
 #define makeNativeMethodN(a, b, c, count, ...) makeNativeMethod ## count
 #define makeNativeMethod(...) makeNativeMethodN(__VA_ARGS__, 3, 2)(__VA_ARGS__)
 
+
+// FAST CALLS / CRITICAL CALLS
+// Android up to and including v7 supports "fast calls" by prefixing the method
+// signature with an exclamation mark.
+// Android v8+ supports fast calls by annotating methods:
+// https://source.android.com/devices/tech/dalvik/improvements#faster-native-methods
+
+// prefixes a JNI method signature as android "fast call".
+#if defined(__ANDROID__) && defined(FBJNI_WITH_FAST_CALLS)
+#define FBJNI_PREFIX_FAST_CALL(desc) (std::string{"!"} + desc)
+#else
+#define FBJNI_PREFIX_FAST_CALL(desc) (desc)
+#endif
+
+#define makeCriticalNativeMethod3(name, desc, func) \
+  makeNativeMethod3(                                \
+    name,                                           \
+    FBJNI_PREFIX_FAST_CALL(desc),                   \
+    ::facebook::jni::detail::CriticalMethod<decltype(&func)>::call<&func>)
+
+#define makeCriticalNativeMethod2(name, func)                                \
+  makeCriticalNativeMethod3(                                                 \
+    name,                                                                    \
+    ::facebook::jni::detail::CriticalMethod<decltype(&func)>::desc<&func>(), \
+    func)
+
+#define makeCriticalNativeMethodN(a, b, c, count, ...) makeCriticalNativeMethod ## count
+#define makeCriticalNativeMethod(...) makeCriticalNativeMethodN(__VA_ARGS__, 3, 2)(__VA_ARGS__)
+
 }}
 
 #include "Registration-inl.h"
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/TypeTraits.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/TypeTraits.h
index 36c8bec15dae27..e8dff3be74d6d8 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/TypeTraits.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/fbjni/TypeTraits.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -69,6 +69,25 @@ constexpr bool IsJniPrimitive() {
   return is_jni_primitive<T>::value;
 }
 
+/// Metafunction to determine whether a series of types are all primitive JNI types.
+template<typename ...Ts>
+struct are_jni_primitives;
+
+template<typename T, typename ...Ts>
+struct are_jni_primitives<T, Ts...> :
+  std::integral_constant<bool,
+    is_jni_primitive<T>::value && are_jni_primitives<Ts...>::value> {};
+
+template<>
+struct are_jni_primitives<> : std::integral_constant<bool, true> {};
+
+/// Helper to simplify use of are_jni_primitives
+template<typename ...Ts>
+constexpr bool AreJniPrimitives() {
+  return are_jni_primitives<Ts...>::value;
+}
+
+
 /// Metafunction to determine whether a type is a JNI array of primitives or not
 template <typename T>
 struct is_jni_primitive_array :
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/lyra.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/lyra.h
index 38bca5ef7f8eec..9b4f705cf4ba8f 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/lyra.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/lyra.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/noncopyable.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/noncopyable.h
index 5dbc03126ad1c9..283f0fac991b25 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/noncopyable.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/noncopyable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/nonmovable.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/nonmovable.h
index 41152f5d171ede..819f7193accd59 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/nonmovable.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/nonmovable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/fb/visibility.h b/ReactAndroid/src/main/jni/first-party/fb/include/fb/visibility.h
index 6c14b50c159b7f..098d5ddcaba188 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/fb/visibility.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/fb/visibility.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/Countable.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/Countable.h
index ae59441babdb1a..8a8d32062b3240 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/Countable.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/Countable.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/GlobalReference.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/GlobalReference.h
index 20c275e2de2ca6..15624bb5e19da1 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/GlobalReference.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/GlobalReference.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/JniTerminateHandler.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/JniTerminateHandler.h
index 509405b31a8b22..c20cb28cb023a5 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/JniTerminateHandler.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/JniTerminateHandler.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalReference.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalReference.h
index 531f26ef8efc73..03aad078a41489 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalReference.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalReference.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalString.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalString.h
index 9d07ef6441cff8..be3a5df086712c 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalString.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/LocalString.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/Registration.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/Registration.h
index 8b91cba35e2061..1b19418e525482 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/Registration.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/Registration.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/WeakReference.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/WeakReference.h
index 898f91e9eb804c..7b1df7c8bfa2e6 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/WeakReference.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/WeakReference.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/include/jni/jni_helpers.h b/ReactAndroid/src/main/jni/first-party/fb/include/jni/jni_helpers.h
index 93912f4a0a59a0..cabf657272da17 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/include/jni/jni_helpers.h
+++ b/ReactAndroid/src/main/jni/first-party/fb/include/jni/jni_helpers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/ByteBuffer.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/ByteBuffer.cpp
index 8060930275c5d8..6ef586a0e18cbd 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/ByteBuffer.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/ByteBuffer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/Countable.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/Countable.cpp
index ee958bf57157ee..1d4bfc558c7bd1 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/Countable.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/Countable.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/Environment.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/Environment.cpp
index eae5c73ebc8be8..81975215d244cf 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/Environment.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/Environment.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
index 783f468c4de3f9..326e114b20de7f 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/Exceptions.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/Hybrid.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/Hybrid.cpp
index dfcf858fd16da5..5fc9a1bc6614f3 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/Hybrid.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/Hybrid.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/LocalString.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/LocalString.cpp
index 7679d09404b825..11477d0eeff2e8 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/LocalString.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/LocalString.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/OnLoad.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/OnLoad.cpp
index 228621cbd90f43..ebd8c879fcde54 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/OnLoad.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/OnLoad.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/ReadableByteChannel.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/ReadableByteChannel.cpp
index 9c67df3fa923a3..ac25174d4ab2d7 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/ReadableByteChannel.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/ReadableByteChannel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/References.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/References.cpp
index 37160cdd1bb1e4..d41010f81e298f 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/References.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/References.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/WeakReference.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/WeakReference.cpp
index dfaa02f6c76fd2..bdf3f24d2adf30 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/WeakReference.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/WeakReference.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/android/CpuCapabilities.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/android/CpuCapabilities.cpp
index 18974660f699e2..b0361e97b9bbf5 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/android/CpuCapabilities.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/android/CpuCapabilities.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/android/ReferenceChecking.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/android/ReferenceChecking.cpp
index 7d3fc5716d12bd..0af62c90ba8659 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/android/ReferenceChecking.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/android/ReferenceChecking.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/fbjni.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/fbjni.cpp
index b455ad845199a3..b62f64cf65ba22 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/fbjni.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/fbjni.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/java/BUCK b/ReactAndroid/src/main/jni/first-party/fb/jni/java/BUCK
index 8b2cb7b5941abe..addc23b95f5a9b 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/java/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/java/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_java_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_java_library")
 
 rn_java_library(
     name = "java",
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppException.java b/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppException.java
index 6308d5dc269310..16766cc0648939 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppException.java
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppSystemErrorException.java b/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppSystemErrorException.java
index 942a617148a629..865246e584345e 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppSystemErrorException.java
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/java/CppSystemErrorException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/java/UnknownCppException.java b/ReactAndroid/src/main/jni/first-party/fb/jni/java/UnknownCppException.java
index 902159d9fcdf99..de34f2814b3d33 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/java/UnknownCppException.java
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/java/UnknownCppException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/jni/jni_helpers.cpp b/ReactAndroid/src/main/jni/first-party/fb/jni/jni_helpers.cpp
index df02ab48250898..318dcc5259593b 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/jni/jni_helpers.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/jni/jni_helpers.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/log.cpp b/ReactAndroid/src/main/jni/first-party/fb/log.cpp
index ec96d79831e3b4..ecebf3f2a0c7f2 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/log.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/log.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/lyra/lyra.cpp b/ReactAndroid/src/main/jni/first-party/fb/lyra/lyra.cpp
index 4e1f2e9240aa4a..4058b6f4a70538 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/lyra/lyra.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/lyra/lyra.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fb/onload.cpp b/ReactAndroid/src/main/jni/first-party/fb/onload.cpp
index 0594526d38167a..158d88328c0065 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/onload.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fb/onload.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fbgloginit/Android.mk b/ReactAndroid/src/main/jni/first-party/fbgloginit/Android.mk
index 9cf94c5b4aaeb0..8fde56dd168cda 100644
--- a/ReactAndroid/src/main/jni/first-party/fbgloginit/Android.mk
+++ b/ReactAndroid/src/main/jni/first-party/fbgloginit/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
diff --git a/ReactAndroid/src/main/jni/first-party/fbgloginit/BUCK b/ReactAndroid/src/main/jni/first-party/fbgloginit/BUCK
index b38194f8d0963b..fdbcf95fdbf457 100644
--- a/ReactAndroid/src/main/jni/first-party/fbgloginit/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/fbgloginit/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "GLOG_DEP", "cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "GLOG_DEP", "cxx_library")
 
 cxx_library(
     name = "fbgloginit",
diff --git a/ReactAndroid/src/main/jni/first-party/fbgloginit/fb/glog_init.h b/ReactAndroid/src/main/jni/first-party/fbgloginit/fb/glog_init.h
index 18d591ee49aecf..354a62f47cf46b 100644
--- a/ReactAndroid/src/main/jni/first-party/fbgloginit/fb/glog_init.h
+++ b/ReactAndroid/src/main/jni/first-party/fbgloginit/fb/glog_init.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/fbgloginit/glog_init.cpp b/ReactAndroid/src/main/jni/first-party/fbgloginit/glog_init.cpp
index 614cc881d7a970..176b9cb098d15b 100644
--- a/ReactAndroid/src/main/jni/first-party/fbgloginit/glog_init.cpp
+++ b/ReactAndroid/src/main/jni/first-party/fbgloginit/glog_init.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/jni-hack/BUCK b/ReactAndroid/src/main/jni/first-party/jni-hack/BUCK
index 79f4fce30259ce..a0144cc50f7efa 100644
--- a/ReactAndroid/src/main/jni/first-party/jni-hack/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/jni-hack/BUCK
@@ -1,6 +1,6 @@
-load("//ReactNative:DEFS.bzl", "cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "cxx_library")
 
-# Copyright (c) 2014-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/jni-hack/jni.h b/ReactAndroid/src/main/jni/first-party/jni-hack/jni.h
index 166908733ef313..34d46448fbbc71 100644
--- a/ReactAndroid/src/main/jni/first-party/jni-hack/jni.h
+++ b/ReactAndroid/src/main/jni/first-party/jni-hack/jni.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/first-party/yogajni/Android.mk b/ReactAndroid/src/main/jni/first-party/yogajni/Android.mk
index ce43103dd25a03..2aecd218147dbf 100644
--- a/ReactAndroid/src/main/jni/first-party/yogajni/Android.mk
+++ b/ReactAndroid/src/main/jni/first-party/yogajni/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
diff --git a/ReactAndroid/src/main/jni/first-party/yogajni/BUCK b/ReactAndroid/src/main/jni/first-party/yogajni/BUCK
index 7f431d1353e237..7924f31eaf8c61 100644
--- a/ReactAndroid/src/main/jni/first-party/yogajni/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/yogajni/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "FBJNI_TARGET", "oss_cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "FBJNI_TARGET", "oss_cxx_library")
 
 # This target is only used in open source
 oss_cxx_library(
diff --git a/ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNI.cpp b/ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNI.cpp
index c3fca261f04958..56deb733017eeb 100644
--- a/ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNI.cpp
+++ b/ReactAndroid/src/main/jni/first-party/yogajni/jni/YGJNI.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) 2018-present, Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -304,10 +304,7 @@ jlong jni_YGNodeNewWithConfig(alias_ref<jobject> thiz, jlong configPointer) {
   return reinterpret_cast<jlong>(node);
 }
 
-void jni_YGNodeSetOwner(
-    alias_ref<jobject> thiz,
-    jlong nativePointer,
-    jlong newOwnerNativePointer) {
+void jni_YGNodeSetOwner(jlong nativePointer, jlong newOwnerNativePointer) {
   const YGNodeRef node = _jlong2YGNodeRef(nativePointer);
   const YGNodeRef newOwnerNode = _jlong2YGNodeRef(newOwnerNativePointer);
 
@@ -324,7 +321,7 @@ jlong jni_YGNodeClone(
   return reinterpret_cast<jlong>(clonedYogaNode);
 }
 
-void jni_YGNodeFree(alias_ref<jclass>, jlong nativePointer) {
+void jni_YGNodeFree(jlong nativePointer) {
   if (nativePointer == 0) {
     return;
   }
@@ -333,12 +330,12 @@ void jni_YGNodeFree(alias_ref<jclass>, jlong nativePointer) {
   YGNodeFree(node);
 }
 
-void jni_YGNodeClearChildren(alias_ref<jobject> thiz, jlong nativePointer) {
+void jni_YGNodeClearChildren(jlong nativePointer) {
   const YGNodeRef node = _jlong2YGNodeRef(nativePointer);
   node->clearChildren();
 }
 
-void jni_YGNodeReset(alias_ref<jobject> thiz, jlong nativePointer) {
+void jni_YGNodeReset(jlong nativePointer) {
   const YGNodeRef node = _jlong2YGNodeRef(nativePointer);
   void* context = node->getContext();
   YGNodeReset(node);
@@ -346,7 +343,7 @@ void jni_YGNodeReset(alias_ref<jobject> thiz, jlong nativePointer) {
   node->setPrintFunc(YGPrint);
 }
 
-void jni_YGNodePrint(alias_ref<jobject> thiz, jlong nativePointer) {
+void jni_YGNodePrint(jlong nativePointer) {
   const YGNodeRef node = _jlong2YGNodeRef(nativePointer);
   YGNodePrint(
       node,
@@ -355,7 +352,6 @@ void jni_YGNodePrint(alias_ref<jobject> thiz, jlong nativePointer) {
 }
 
 void jni_YGNodeInsertChild(
-    alias_ref<jobject>,
     jlong nativePointer,
     jlong childPointer,
     jint index) {
@@ -364,7 +360,6 @@ void jni_YGNodeInsertChild(
 }
 
 void jni_YGNodeInsertSharedChild(
-    alias_ref<jobject>,
     jlong nativePointer,
     jlong childPointer,
     jint index) {
@@ -372,16 +367,24 @@ void jni_YGNodeInsertSharedChild(
       _jlong2YGNodeRef(nativePointer), _jlong2YGNodeRef(childPointer), index);
 }
 
-void jni_YGNodeRemoveChild(
-    alias_ref<jobject>,
-    jlong nativePointer,
-    jlong childPointer) {
+void jni_YGNodeRemoveChild(jlong nativePointer, jlong childPointer) {
   YGNodeRemoveChild(
       _jlong2YGNodeRef(nativePointer), _jlong2YGNodeRef(childPointer));
 }
 
+void jni_YGNodeSetIsReferenceBaseline(
+    jlong nativePointer,
+    jboolean isReferenceBaseline) {
+  YGNodeSetIsReferenceBaseline(
+      _jlong2YGNodeRef(nativePointer), isReferenceBaseline);
+}
+
+jboolean jni_YGNodeIsReferenceBaseline(jlong nativePointer) {
+  return YGNodeIsReferenceBaseline(_jlong2YGNodeRef(nativePointer));
+}
+
 void jni_YGNodeCalculateLayout(
-    alias_ref<jobject>,
+    alias_ref<jclass>,
     jlong nativePointer,
     jfloat width,
     jfloat height) {
@@ -394,40 +397,31 @@ void jni_YGNodeCalculateLayout(
   YGTransferLayoutOutputsRecursive(root);
 }
 
-void jni_YGNodeMarkDirty(alias_ref<jobject>, jlong nativePointer) {
+void jni_YGNodeMarkDirty(jlong nativePointer) {
   YGNodeMarkDirty(_jlong2YGNodeRef(nativePointer));
 }
 
-void jni_YGNodeMarkDirtyAndPropogateToDescendants(
-    alias_ref<jobject>,
-    jlong nativePointer) {
+void jni_YGNodeMarkDirtyAndPropogateToDescendants(jlong nativePointer) {
   YGNodeMarkDirtyAndPropogateToDescendants(_jlong2YGNodeRef(nativePointer));
 }
 
-jboolean jni_YGNodeIsDirty(alias_ref<jobject>, jlong nativePointer) {
+jboolean jni_YGNodeIsDirty(jlong nativePointer) {
   return (jboolean)_jlong2YGNodeRef(nativePointer)->isDirty();
 }
 
-void jni_YGNodeSetHasMeasureFunc(
-    alias_ref<jobject>,
-    jlong nativePointer,
-    jboolean hasMeasureFunc) {
+void jni_YGNodeSetHasMeasureFunc(jlong nativePointer, jboolean hasMeasureFunc) {
   _jlong2YGNodeRef(nativePointer)
       ->setMeasureFunc(hasMeasureFunc ? YGJNIMeasureFunc : nullptr);
 }
 
 void jni_YGNodeSetHasBaselineFunc(
-    alias_ref<jobject>,
     jlong nativePointer,
     jboolean hasBaselineFunc) {
   _jlong2YGNodeRef(nativePointer)
       ->setBaseLineFunc(hasBaselineFunc ? YGJNIBaselineFunc : nullptr);
 }
 
-void jni_YGNodeCopyStyle(
-    alias_ref<jobject>,
-    jlong dstNativePointer,
-    jlong srcNativePointer) {
+void jni_YGNodeCopyStyle(jlong dstNativePointer, jlong srcNativePointer) {
   YGNodeCopyStyle(
       _jlong2YGNodeRef(dstNativePointer), _jlong2YGNodeRef(srcNativePointer));
 }
@@ -440,87 +434,81 @@ struct JYogaValue : public JavaClass<JYogaValue> {
   }
 };
 
-#define YG_NODE_JNI_STYLE_PROP(javatype, type, name)                           \
-  javatype jni_YGNodeStyleGet##name(alias_ref<jobject>, jlong nativePointer) { \
-    return (javatype)YGNodeStyleGet##name(_jlong2YGNodeRef(nativePointer));    \
-  }                                                                            \
-                                                                               \
-  void jni_YGNodeStyleSet##name(                                               \
-      alias_ref<jobject>, jlong nativePointer, javatype value) {               \
-    YGNodeStyleSet##name(                                                      \
-        _jlong2YGNodeRef(nativePointer), static_cast<type>(value));            \
+#define YG_NODE_JNI_STYLE_PROP(javatype, type, name)                        \
+  javatype jni_YGNodeStyleGet##name(jlong nativePointer) {                  \
+    return (javatype)YGNodeStyleGet##name(_jlong2YGNodeRef(nativePointer)); \
+  }                                                                         \
+                                                                            \
+  void jni_YGNodeStyleSet##name(jlong nativePointer, javatype value) {      \
+    YGNodeStyleSet##name(                                                   \
+        _jlong2YGNodeRef(nativePointer), static_cast<type>(value));         \
   }
 
-#define YG_NODE_JNI_STYLE_UNIT_PROP(name)                            \
-  local_ref<jobject> jni_YGNodeStyleGet##name(                       \
-      alias_ref<jobject>, jlong nativePointer) {                     \
-    return JYogaValue::create(                                       \
-        YGNodeStyleGet##name(_jlong2YGNodeRef(nativePointer)));      \
-  }                                                                  \
-                                                                     \
-  void jni_YGNodeStyleSet##name(                                     \
-      alias_ref<jobject>, jlong nativePointer, jfloat value) {       \
-    YGNodeStyleSet##name(                                            \
-        _jlong2YGNodeRef(nativePointer), static_cast<float>(value)); \
-  }                                                                  \
-                                                                     \
-  void jni_YGNodeStyleSet##name##Percent(                            \
-      alias_ref<jobject>, jlong nativePointer, jfloat value) {       \
-    YGNodeStyleSet##name##Percent(                                   \
-        _jlong2YGNodeRef(nativePointer), static_cast<float>(value)); \
+#define YG_NODE_JNI_STYLE_UNIT_PROP(name)                                     \
+  local_ref<jobject> jni_YGNodeStyleGet##name(                                \
+      alias_ref<jobject>, jlong nativePointer) {                              \
+    return JYogaValue::create(                                                \
+        YGNodeStyleGet##name(_jlong2YGNodeRef(nativePointer)));               \
+  }                                                                           \
+                                                                              \
+  void jni_YGNodeStyleSet##name(jlong nativePointer, jfloat value) {          \
+    YGNodeStyleSet##name(                                                     \
+        _jlong2YGNodeRef(nativePointer), static_cast<float>(value));          \
+  }                                                                           \
+                                                                              \
+  void jni_YGNodeStyleSet##name##Percent(jlong nativePointer, jfloat value) { \
+    YGNodeStyleSet##name##Percent(                                            \
+        _jlong2YGNodeRef(nativePointer), static_cast<float>(value));          \
   }
 
 #define YG_NODE_JNI_STYLE_UNIT_PROP_AUTO(name)                   \
   YG_NODE_JNI_STYLE_UNIT_PROP(name)                              \
-  void jni_YGNodeStyleSet##name##Auto(                           \
-      alias_ref<jobject>, jlong nativePointer) {                 \
+  void jni_YGNodeStyleSet##name##Auto(jlong nativePointer) {     \
     YGNodeStyleSet##name##Auto(_jlong2YGNodeRef(nativePointer)); \
   }
 
-#define YG_NODE_JNI_STYLE_EDGE_PROP(javatype, type, name)                   \
-  javatype jni_YGNodeStyleGet##name(                                        \
-      alias_ref<jobject>, jlong nativePointer, jint edge) {                 \
-    return (javatype)YGNodeStyleGet##name(                                  \
-        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge));        \
-  }                                                                         \
-                                                                            \
-  void jni_YGNodeStyleSet##name(                                            \
-      alias_ref<jobject>, jlong nativePointer, jint edge, javatype value) { \
-    YGNodeStyleSet##name(                                                   \
-        _jlong2YGNodeRef(nativePointer),                                    \
-        static_cast<YGEdge>(edge),                                          \
-        static_cast<type>(value));                                          \
+#define YG_NODE_JNI_STYLE_EDGE_PROP(javatype, type, name)             \
+  javatype jni_YGNodeStyleGet##name(jlong nativePointer, jint edge) { \
+    return (javatype)YGNodeStyleGet##name(                            \
+        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge));  \
+  }                                                                   \
+                                                                      \
+  void jni_YGNodeStyleSet##name(                                      \
+      jlong nativePointer, jint edge, javatype value) {               \
+    YGNodeStyleSet##name(                                             \
+        _jlong2YGNodeRef(nativePointer),                              \
+        static_cast<YGEdge>(edge),                                    \
+        static_cast<type>(value));                                    \
   }
 
-#define YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(name)                            \
-  local_ref<jobject> jni_YGNodeStyleGet##name(                            \
-      alias_ref<jobject>, jlong nativePointer, jint edge) {               \
-    return JYogaValue::create(YGNodeStyleGet##name(                       \
-        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge)));     \
-  }                                                                       \
-                                                                          \
-  void jni_YGNodeStyleSet##name(                                          \
-      alias_ref<jobject>, jlong nativePointer, jint edge, jfloat value) { \
-    YGNodeStyleSet##name(                                                 \
-        _jlong2YGNodeRef(nativePointer),                                  \
-        static_cast<YGEdge>(edge),                                        \
-        static_cast<float>(value));                                       \
-  }                                                                       \
-                                                                          \
-  void jni_YGNodeStyleSet##name##Percent(                                 \
-      alias_ref<jobject>, jlong nativePointer, jint edge, jfloat value) { \
-    YGNodeStyleSet##name##Percent(                                        \
-        _jlong2YGNodeRef(nativePointer),                                  \
-        static_cast<YGEdge>(edge),                                        \
-        static_cast<float>(value));                                       \
+#define YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(name)                        \
+  local_ref<jobject> jni_YGNodeStyleGet##name(                        \
+      alias_ref<jobject>, jlong nativePointer, jint edge) {           \
+    return JYogaValue::create(YGNodeStyleGet##name(                   \
+        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge))); \
+  }                                                                   \
+                                                                      \
+  void jni_YGNodeStyleSet##name(                                      \
+      jlong nativePointer, jint edge, jfloat value) {                 \
+    YGNodeStyleSet##name(                                             \
+        _jlong2YGNodeRef(nativePointer),                              \
+        static_cast<YGEdge>(edge),                                    \
+        static_cast<float>(value));                                   \
+  }                                                                   \
+                                                                      \
+  void jni_YGNodeStyleSet##name##Percent(                             \
+      jlong nativePointer, jint edge, jfloat value) {                 \
+    YGNodeStyleSet##name##Percent(                                    \
+        _jlong2YGNodeRef(nativePointer),                              \
+        static_cast<YGEdge>(edge),                                    \
+        static_cast<float>(value));                                   \
   }
 
-#define YG_NODE_JNI_STYLE_EDGE_UNIT_PROP_AUTO(name)                  \
-  YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(name)                             \
-  void jni_YGNodeStyleSet##name##Auto(                               \
-      alias_ref<jobject>, jlong nativePointer, jint edge) {          \
-    YGNodeStyleSet##name##Auto(                                      \
-        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge)); \
+#define YG_NODE_JNI_STYLE_EDGE_UNIT_PROP_AUTO(name)                     \
+  YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(name)                                \
+  void jni_YGNodeStyleSet##name##Auto(jlong nativePointer, jint edge) { \
+    YGNodeStyleSet##name##Auto(                                         \
+        _jlong2YGNodeRef(nativePointer), static_cast<YGEdge>(edge));    \
   }
 
 YG_NODE_JNI_STYLE_PROP(jint, YGDirection, Direction);
@@ -534,10 +522,7 @@ YG_NODE_JNI_STYLE_PROP(jint, YGWrap, FlexWrap);
 YG_NODE_JNI_STYLE_PROP(jint, YGOverflow, Overflow);
 YG_NODE_JNI_STYLE_PROP(jint, YGDisplay, Display);
 
-void jni_YGNodeStyleSetFlex(
-    alias_ref<jobject>,
-    jlong nativePointer,
-    jfloat value) {
+void jni_YGNodeStyleSetFlex(jlong nativePointer, jfloat value) {
   YGNodeStyleSetFlex(
       _jlong2YGNodeRef(nativePointer), static_cast<float>(value));
 }
@@ -599,6 +584,14 @@ void jni_YGConfigSetUseWebDefaults(
   YGConfigSetUseWebDefaults(config, useWebDefaults);
 }
 
+void jni_YGConfigSetPrintTreeFlag(
+    alias_ref<jobject>,
+    jlong nativePointer,
+    jboolean enable) {
+  const YGConfigRef config = _jlong2YGConfigRef(nativePointer);
+  YGConfigSetPrintTreeFlag(config, enable);
+}
+
 void jni_YGConfigSetPointScaleFactor(
     alias_ref<jobject>,
     jlong nativePointer,
@@ -661,11 +654,12 @@ void jni_YGConfigSetLogger(
   }
 }
 
-jint jni_YGNodeGetInstanceCount(alias_ref<jclass> clazz) {
+jint jni_YGNodeGetInstanceCount() {
   return YGNodeGetInstanceCount();
 }
 
 #define YGMakeNativeMethod(name) makeNativeMethod(#name, name)
+#define YGMakeCriticalNativeMethod(name) makeCriticalNativeMethod(#name, name)
 
 jint JNI_OnLoad(JavaVM* vm, void*) {
   return initialize(vm, [] {
@@ -674,85 +668,88 @@ jint JNI_OnLoad(JavaVM* vm, void*) {
         {
             YGMakeNativeMethod(jni_YGNodeNew),
             YGMakeNativeMethod(jni_YGNodeNewWithConfig),
-            YGMakeNativeMethod(jni_YGNodeFree),
-            YGMakeNativeMethod(jni_YGNodeReset),
-            YGMakeNativeMethod(jni_YGNodeClearChildren),
-            YGMakeNativeMethod(jni_YGNodeInsertChild),
-            YGMakeNativeMethod(jni_YGNodeInsertSharedChild),
-            YGMakeNativeMethod(jni_YGNodeRemoveChild),
+            YGMakeCriticalNativeMethod(jni_YGNodeFree),
+            YGMakeCriticalNativeMethod(jni_YGNodeReset),
+            YGMakeCriticalNativeMethod(jni_YGNodeClearChildren),
+            YGMakeCriticalNativeMethod(jni_YGNodeInsertChild),
+            YGMakeCriticalNativeMethod(jni_YGNodeInsertSharedChild),
+            YGMakeCriticalNativeMethod(jni_YGNodeRemoveChild),
+            YGMakeCriticalNativeMethod(jni_YGNodeSetIsReferenceBaseline),
+            YGMakeCriticalNativeMethod(jni_YGNodeIsReferenceBaseline),
             YGMakeNativeMethod(jni_YGNodeCalculateLayout),
-            YGMakeNativeMethod(jni_YGNodeMarkDirty),
-            YGMakeNativeMethod(jni_YGNodeMarkDirtyAndPropogateToDescendants),
-            YGMakeNativeMethod(jni_YGNodeIsDirty),
-            YGMakeNativeMethod(jni_YGNodeSetHasMeasureFunc),
-            YGMakeNativeMethod(jni_YGNodeSetHasBaselineFunc),
-            YGMakeNativeMethod(jni_YGNodeCopyStyle),
-            YGMakeNativeMethod(jni_YGNodeStyleGetDirection),
-            YGMakeNativeMethod(jni_YGNodeStyleSetDirection),
-            YGMakeNativeMethod(jni_YGNodeStyleGetFlexDirection),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexDirection),
-            YGMakeNativeMethod(jni_YGNodeStyleGetJustifyContent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetJustifyContent),
-            YGMakeNativeMethod(jni_YGNodeStyleGetAlignItems),
-            YGMakeNativeMethod(jni_YGNodeStyleSetAlignItems),
-            YGMakeNativeMethod(jni_YGNodeStyleGetAlignSelf),
-            YGMakeNativeMethod(jni_YGNodeStyleSetAlignSelf),
-            YGMakeNativeMethod(jni_YGNodeStyleGetAlignContent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetAlignContent),
-            YGMakeNativeMethod(jni_YGNodeStyleGetPositionType),
-            YGMakeNativeMethod(jni_YGNodeStyleSetPositionType),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexWrap),
-            YGMakeNativeMethod(jni_YGNodeStyleGetOverflow),
-            YGMakeNativeMethod(jni_YGNodeStyleSetOverflow),
-            YGMakeNativeMethod(jni_YGNodeStyleGetDisplay),
-            YGMakeNativeMethod(jni_YGNodeStyleSetDisplay),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlex),
-            YGMakeNativeMethod(jni_YGNodeStyleGetFlexGrow),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexGrow),
-            YGMakeNativeMethod(jni_YGNodeStyleGetFlexShrink),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexShrink),
+            YGMakeCriticalNativeMethod(jni_YGNodeMarkDirty),
+            YGMakeCriticalNativeMethod(
+                jni_YGNodeMarkDirtyAndPropogateToDescendants),
+            YGMakeCriticalNativeMethod(jni_YGNodeIsDirty),
+            YGMakeCriticalNativeMethod(jni_YGNodeSetHasMeasureFunc),
+            YGMakeCriticalNativeMethod(jni_YGNodeSetHasBaselineFunc),
+            YGMakeCriticalNativeMethod(jni_YGNodeCopyStyle),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetDirection),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetDirection),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetFlexDirection),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexDirection),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetJustifyContent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetJustifyContent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetAlignItems),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetAlignItems),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetAlignSelf),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetAlignSelf),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetAlignContent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetAlignContent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetPositionType),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetPositionType),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexWrap),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetOverflow),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetOverflow),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetDisplay),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetDisplay),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlex),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetFlexGrow),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexGrow),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetFlexShrink),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexShrink),
             YGMakeNativeMethod(jni_YGNodeStyleGetFlexBasis),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasis),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasisPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasisAuto),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexBasis),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexBasisPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetFlexBasisAuto),
             YGMakeNativeMethod(jni_YGNodeStyleGetMargin),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMargin),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMarginPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMarginAuto),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMargin),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMarginPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMarginAuto),
             YGMakeNativeMethod(jni_YGNodeStyleGetPadding),
-            YGMakeNativeMethod(jni_YGNodeStyleSetPadding),
-            YGMakeNativeMethod(jni_YGNodeStyleSetPaddingPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleGetBorder),
-            YGMakeNativeMethod(jni_YGNodeStyleSetBorder),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetPadding),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetPaddingPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetBorder),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetBorder),
             YGMakeNativeMethod(jni_YGNodeStyleGetPosition),
-            YGMakeNativeMethod(jni_YGNodeStyleSetPosition),
-            YGMakeNativeMethod(jni_YGNodeStyleSetPositionPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetPosition),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetPositionPercent),
             YGMakeNativeMethod(jni_YGNodeStyleGetWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetWidthPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetWidthAuto),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetWidth),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetWidthPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetWidthAuto),
             YGMakeNativeMethod(jni_YGNodeStyleGetHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetHeightPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleSetHeightAuto),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetHeight),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetHeightPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetHeightAuto),
             YGMakeNativeMethod(jni_YGNodeStyleGetMinWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMinWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMinWidthPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMinWidth),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMinWidthPercent),
             YGMakeNativeMethod(jni_YGNodeStyleGetMinHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMinHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMinHeightPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMinHeight),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMinHeightPercent),
             YGMakeNativeMethod(jni_YGNodeStyleGetMaxWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMaxWidth),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMaxWidthPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMaxWidth),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMaxWidthPercent),
             YGMakeNativeMethod(jni_YGNodeStyleGetMaxHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMaxHeight),
-            YGMakeNativeMethod(jni_YGNodeStyleSetMaxHeightPercent),
-            YGMakeNativeMethod(jni_YGNodeStyleGetAspectRatio),
-            YGMakeNativeMethod(jni_YGNodeStyleSetAspectRatio),
-            YGMakeNativeMethod(jni_YGNodeGetInstanceCount),
-            YGMakeNativeMethod(jni_YGNodePrint),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMaxHeight),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetMaxHeightPercent),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleGetAspectRatio),
+            YGMakeCriticalNativeMethod(jni_YGNodeStyleSetAspectRatio),
+            YGMakeCriticalNativeMethod(jni_YGNodeGetInstanceCount),
+            YGMakeCriticalNativeMethod(jni_YGNodePrint),
             YGMakeNativeMethod(jni_YGNodeClone),
-            YGMakeNativeMethod(jni_YGNodeSetOwner),
+            YGMakeCriticalNativeMethod(jni_YGNodeSetOwner),
         });
     registerNatives(
         "com/facebook/yoga/YogaConfig",
@@ -761,6 +758,7 @@ jint JNI_OnLoad(JavaVM* vm, void*) {
             YGMakeNativeMethod(jni_YGConfigFree),
             YGMakeNativeMethod(jni_YGConfigSetExperimentalFeatureEnabled),
             YGMakeNativeMethod(jni_YGConfigSetUseWebDefaults),
+            YGMakeNativeMethod(jni_YGConfigSetPrintTreeFlag),
             YGMakeNativeMethod(jni_YGConfigSetPointScaleFactor),
             YGMakeNativeMethod(jni_YGConfigSetUseLegacyStretchBehaviour),
             YGMakeNativeMethod(jni_YGConfigSetLogger),
diff --git a/ReactAndroid/src/main/jni/prebuilt/BUCK b/ReactAndroid/src/main/jni/prebuilt/BUCK
index c35807a9513ad1..fcbe40c84a00c3 100644
--- a/ReactAndroid/src/main/jni/prebuilt/BUCK
+++ b/ReactAndroid/src/main/jni/prebuilt/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_prebuilt_aar", "rn_prebuilt_native_library")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_prebuilt_aar", "rn_prebuilt_native_library")
 # Temp workaround to get the build working e2e, Gradle builds them for us
 
 rn_prebuilt_native_library(
@@ -13,7 +14,7 @@ rn_android_prebuilt_aar(
     visibility = ["PUBLIC"],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "android-jsc-aar",
     sha1 = "880cedd93f43e0fc841f01f2fa185a63d9230f85",
     url = "mvn:org.webkit:android-jsc:aar:r174650",
diff --git a/ReactAndroid/src/main/jni/react/jni/Android.mk b/ReactAndroid/src/main/jni/react/jni/Android.mk
index 88a8e980677117..27ee0f608e1391 100644
--- a/ReactAndroid/src/main/jni/react/jni/Android.mk
+++ b/ReactAndroid/src/main/jni/react/jni/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
@@ -31,12 +36,20 @@ LOCAL_SRC_FILES := \
   WritableNativeMap.cpp \
 
 LOCAL_C_INCLUDES := $(LOCAL_PATH)
+
+# Include ./../../ in the header search path for modules that depend on
+# reactnativejni. This will allow external modules to require this module's
+# headers using #include <react/jni/<header>.h>, assuming:
+#   .     == jni
+#   ./../ == react
 LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/../..
 
 LOCAL_CFLAGS += -fvisibility=hidden
-LOCAL_CXXFLAGS := -fexceptions -frtti
+LOCAL_CFLAGS += -fexceptions -frtti
 
 LOCAL_LDLIBS += -landroid
+
+# The dynamic libraries (.so files) that this module depends on.
 LOCAL_SHARED_LIBRARIES := libfolly_json libfb libglog_init libyoga libprivatedata
 
 LOCAL_V8_FILES := \
@@ -45,7 +58,6 @@ LOCAL_V8_FILES := \
 LOCAL_JSC_FILES := \
   AndroidJSCFactory.cpp \
   JSCPerfLogging.cpp \
-  JSLogging.cpp
 
 ifeq ($(V8_ENABLED), 1)
   LOCAL_SRC_FILES += $(LOCAL_V8_FILES)
@@ -56,11 +68,34 @@ else
   LOCAL_SHARED_LIBRARIES += libjsc
 endif
 
+
+# The static libraries (.a files) that this module depends on.
 LOCAL_STATIC_LIBRARIES := libreactnative
+
+# Name of this module.
+#
+# Other modules can depend on this one by adding libreactnativejni to their
+# LOCAL_SHARED_LIBRARIES variable.
+LOCAL_MODULE := reactnativejni
+
 APP_ALLOW_MISSING_DEPS :=true
 
+# Build the files in this directory as a shared library
 include $(BUILD_SHARED_LIBRARY)
 
+# Compile the c++ dependencies required for ReactAndroid
+#
+# How does the import-module function work?
+#   For each $(call import-module,<module-dir>), you search the directories in
+#   NDK_MODULE_PATH. (This variable is defined in Application.mk). If you find a
+#   <module-dir>/Android.mk you in a directory <dir>, you run:
+#   include <dir>/<module-dir>/Android.mk
+#
+# What does it mean to include an Android.mk file?
+#   Whenever you encounter an include <dir>/<module-dir>/Android.mk, you
+#   tell andorid-ndk to compile the module in <dir>/<module-dir> according
+#   to the specification inside <dir>/<module-dir>/Android.mk.
+
 $(call import-module,cxxreact)
 $(call import-module,privatedata)
 $(call import-module,fb)
@@ -78,4 +113,4 @@ $(call import-module,jsiexecutor)
 # $(call import-module,jscexecutor)
 
 include $(REACT_SRC_DIR)/jscexecutor/Android.mk
-include $(REACT_SRC_DIR)/v8executor/Android.mk
+include $(REACT_SRC_DIR)/v8executor/Android.mk
\ No newline at end of file
diff --git a/ReactAndroid/src/main/jni/react/jni/BUCK b/ReactAndroid/src/main/jni/react/jni/BUCK
index affc4b4e3c8eeb..b2776f17043f85 100644
--- a/ReactAndroid/src/main/jni/react/jni/BUCK
+++ b/ReactAndroid/src/main/jni/react/jni/BUCK
@@ -1,7 +1,6 @@
-load("//ReactNative:DEFS.bzl", "ANDROID", "ANDROID_JSC_DEPS", "APPLE_JSC_DEPS", "FBJNI_TARGET", "IS_OSS_BUILD", "react_native_xplat_target", "rn_xplat_cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "FBJNI_TARGET", "IS_OSS_BUILD", "react_native_xplat_dep", "react_native_xplat_target", "rn_xplat_cxx_library")
 
 EXPORTED_HEADERS = [
-    "AndroidJSCFactory.h",
     "CxxModuleWrapper.h",
     "CxxModuleWrapperBase.h",
     "CxxSharedModuleWrapper.h",
@@ -40,8 +39,6 @@ rn_xplat_cxx_library(
         "-Wno-inconsistent-missing-override",
     ],
     fbandroid_allow_jni_merging = True,
-    fbandroid_deps = ANDROID_JSC_DEPS,
-    fbobjc_deps = APPLE_JSC_DEPS,
     platforms = ANDROID,
     preprocessor_flags = [
         "-DLOG_TAG=\"ReactNativeJNI\"",
@@ -54,11 +51,15 @@ rn_xplat_cxx_library(
     ],
     deps = ([
         "xplat//third-party/linker_lib:android",
+        "xplat//third-party/linker_lib:atomic",
         "xplat//folly:molly",
         "fbandroid//xplat/fbgloginit:fbgloginit",
         "xplat//fbsystrace:fbsystrace",
         react_native_xplat_target("cxxreact:bridge"),
+        react_native_xplat_target("cxxreact:jsbigstring"),
         react_native_xplat_target("cxxreact:module"),
+        react_native_xplat_target("jsinspector:jsinspector"),
+        react_native_xplat_dep("jsi:jsi"),
         FBJNI_TARGET,
     ]) if not IS_OSS_BUILD else [],
 )
diff --git a/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.cpp b/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.cpp
index 2629a025ec2f15..d59f1cff5ceed8 100644
--- a/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.h b/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.h
index 922b291930c79b..b7e35f6e86edc3 100644
--- a/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.h
+++ b/ReactAndroid/src/main/jni/react/jni/CatalystInstanceImpl.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.cpp b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.cpp
index b9205cc6ae5f40..4da868a2f291c4 100644
--- a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.h b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.h
index 0055965c6cb4b4..10eeb59312bad6 100644
--- a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.h
+++ b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapperBase.h b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapperBase.h
index 128135453595f2..b774775dbcd120 100644
--- a/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapperBase.h
+++ b/ReactAndroid/src/main/jni/react/jni/CxxModuleWrapperBase.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/CxxSharedModuleWrapper.h b/ReactAndroid/src/main/jni/react/jni/CxxSharedModuleWrapper.h
index 53f8b653c2d4c1..23ded88b7ceb49 100644
--- a/ReactAndroid/src/main/jni/react/jni/CxxSharedModuleWrapper.h
+++ b/ReactAndroid/src/main/jni/react/jni/CxxSharedModuleWrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JCallback.h b/ReactAndroid/src/main/jni/react/jni/JCallback.h
index 00502ab56b0beb..5e4de6671c7ae4 100644
--- a/ReactAndroid/src/main/jni/react/jni/JCallback.h
+++ b/ReactAndroid/src/main/jni/react/jni/JCallback.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JInspector.cpp b/ReactAndroid/src/main/jni/react/jni/JInspector.cpp
index 0f1b5593ad2cd4..3b48d46b5d4e05 100644
--- a/ReactAndroid/src/main/jni/react/jni/JInspector.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JInspector.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JInspector.h b/ReactAndroid/src/main/jni/react/jni/JInspector.h
index a199989c998dfc..67e512c5bf23d9 100644
--- a/ReactAndroid/src/main/jni/react/jni/JInspector.h
+++ b/ReactAndroid/src/main/jni/react/jni/JInspector.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.cpp b/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.cpp
index 511fe4fa5f6fbb..c25da739d0ce04 100644
--- a/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -8,9 +8,9 @@
 #include <condition_variable>
 #include <mutex>
 
+#include <fb/fbjni.h>
 #include <fb/log.h>
 #include <folly/Memory.h>
-#include <fb/fbjni.h>
 
 #include <jschelpers/JSException.h>
 #include <jsi/jsi.h>
diff --git a/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.h b/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.h
index 604429671c0b03..c25b87b1ee3977 100644
--- a/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.h
+++ b/ReactAndroid/src/main/jni/react/jni/JMessageQueueThread.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JNativeRunnable.h b/ReactAndroid/src/main/jni/react/jni/JNativeRunnable.h
index 53a973e85a61bb..015d6b416b1771 100644
--- a/ReactAndroid/src/main/jni/react/jni/JNativeRunnable.h
+++ b/ReactAndroid/src/main/jni/react/jni/JNativeRunnable.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JReactMarker.cpp b/ReactAndroid/src/main/jni/react/jni/JReactMarker.cpp
index 6b26d8154c8bf7..fd4d6110b4388f 100644
--- a/ReactAndroid/src/main/jni/react/jni/JReactMarker.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JReactMarker.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -61,6 +61,7 @@ void JReactMarker::logPerfMarker(const ReactMarker::ReactMarkerId markerId, cons
       break;
     case ReactMarker::BYTECODE_WRITE_FAILED:
       JReactMarker::logMarker("BYTECODE_WRITE_FAILED");
+      break;
     case ReactMarker::REGISTER_JS_SEGMENT_START:
       JReactMarker::logMarker("REGISTER_JS_SEGMENT_START", tag);
       break;
diff --git a/ReactAndroid/src/main/jni/react/jni/JReactMarker.h b/ReactAndroid/src/main/jni/react/jni/JReactMarker.h
index dc81e8420ad93b..916e0c388b0f1f 100644
--- a/ReactAndroid/src/main/jni/react/jni/JReactMarker.h
+++ b/ReactAndroid/src/main/jni/react/jni/JReactMarker.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.cpp b/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.cpp
deleted file mode 100644
index 5cbc983c92f2eb..00000000000000
--- a/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.cpp
+++ /dev/null
@@ -1,308 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#include "JSCPerfLogging.h"
-
-#include <jschelpers/JSCHelpers.h>
-
-#include <fb/log.h>
-#include <fb/fbjni.h>
-
-using namespace facebook::jni;
-
-namespace facebook { namespace react {
-
-struct JQuickPerformanceLogger : JavaClass<JQuickPerformanceLogger> {
-  static auto constexpr kJavaDescriptor = "Lcom/facebook/quicklog/QuickPerformanceLogger;";
-
-  void markerStart(int markerId, int instanceKey, long timestamp) {
-    static auto markerStartMethod =
-      javaClassStatic()->getMethod<void(jint, jint, jlong)>("markerStart");
-    markerStartMethod(self(), markerId, instanceKey, timestamp);
-  }
-
-  void markerEnd(int markerId, int instanceKey, short actionId, long timestamp) {
-    static auto markerEndMethod =
-      javaClassStatic()->getMethod<void(jint, jint, jshort, jlong)>("markerEnd");
-    markerEndMethod(self(), markerId, instanceKey, actionId, timestamp);
-  }
-
-  void markerTag(int markerId, int instanceKey, alias_ref<jstring> tag) {
-    static auto markerTagMethod =
-      javaClassStatic()->getMethod<void(jint, jint, alias_ref<jstring>)>("markerTag");
-    markerTagMethod(self(), markerId, instanceKey, tag);
-  }
-
-  void markerAnnotate(
-      int markerId,
-      int instanceKey,
-      alias_ref<jstring> key,
-      alias_ref<jstring> value) {
-    static auto markerAnnotateMethod = javaClassStatic()->
-      getMethod<void(jint, jint, alias_ref<jstring>, alias_ref<jstring>)>("markerAnnotate");
-    markerAnnotateMethod(self(), markerId, instanceKey, key, value);
-  }
-
-  void markerNote(int markerId, int instanceKey, short actionId, long timestamp) {
-    static auto markerNoteMethod =
-      javaClassStatic()->getMethod<void(jint, jint, jshort, jlong)>("markerNote");
-    markerNoteMethod(self(), markerId, instanceKey, actionId, timestamp);
-  }
-
-  void markerCancel(int markerId, int instanceKey) {
-    static auto markerCancelMethod =
-      javaClassStatic()->getMethod<void(jint, jint)>("markerCancel");
-    markerCancelMethod(self(), markerId, instanceKey);
-  }
-
-  int64_t currentMonotonicTimestamp() {
-    static auto currentTimestampMethod =
-      javaClassStatic()->getMethod<jlong()>("currentMonotonicTimestamp");
-    return currentTimestampMethod(self());
-  }
-
-  void markerPoint(int markerId, alias_ref<jstring> name, int instanceKey) {
-    static auto markerPointMethod =
-      javaClassStatic()->getMethod<void(jint, jint, alias_ref<jstring>)>("markerPoint");
-    markerPointMethod(self(), markerId, instanceKey, name);
-  }
-};
-
-struct JQuickPerformanceLoggerProvider : JavaClass<JQuickPerformanceLoggerProvider> {
-  static auto constexpr kJavaDescriptor = "Lcom/facebook/quicklog/QuickPerformanceLoggerProvider;";
-
-  static alias_ref<JQuickPerformanceLogger::javaobject> get() {
-    static auto getQPLInstMethod =
-      javaClassStatic()->getStaticMethod<JQuickPerformanceLogger::javaobject()>("getQPLInstance");
-    static auto logger = make_global(getQPLInstMethod(javaClassStatic()));
-    return logger;
-  }
-};
-
-static bool isReady() {
-  static bool ready = false;
-  if (!ready) {
-    try {
-      // TODO: findClassStatic only does the lookup once. If we can't find
-      // QuickPerformanceLoggerProvider the first time we call this, we will always fail here.
-      findClassStatic("com/facebook/quicklog/QuickPerformanceLoggerProvider");
-    } catch(...) {
-      // Swallow this exception - we don't want to crash the app, an error is enough.
-      FBLOGE("Calling QPL from JS before class has been loaded in Java. Ignored.");
-      return false;
-    }
-    if (JQuickPerformanceLoggerProvider::get()) {
-      ready = true;
-    } else {
-      FBLOGE("Calling QPL from JS before it has been initialized in Java. Ignored.");
-      return false;
-    }
-  }
-  return ready;
-}
-
-// After having read the implementation of PNaN that is returned from JSValueToNumber, and some
-// more material on how NaNs are constructed, I think this is the most consistent way to verify
-// NaN with how we generate it.
-// Once the integration completes, I'll play around with it some more and potentially change this
-// implementation to use std::isnan() if it is exactly commensurate with our usage.
-static bool isNan(double value) {
-  return (value != value);
-}
-
-static double grabDouble(
-    JSContextRef ctx,
-    const JSValueRef arguments[],
-    size_t argumentIndex,
-    JSValueRef* exception) {
-  return JSValueToNumber(ctx, arguments[argumentIndex], exception);
-}
-
-// Safely translates JSValues to an array of doubles.
-static bool grabDoubles(
-    size_t targetsCount,
-    double targets[],
-    JSContextRef ctx,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  if (argumentCount < targetsCount) {
-    return false;
-  }
-  for (size_t i = 0 ; i < targetsCount ; i++) {
-    targets[i] = grabDouble(ctx, arguments, i, exception);
-    if (isNan(targets[i])) {
-      return false;
-    }
-  }
-  return true;
-}
-
-static local_ref<jstring> getJStringFromJSValueRef(JSContextRef ctx, JSValueRef ref) {
-    JSStringRef jsStringRef = JSValueToStringCopy(ctx, ref, nullptr);
-    const JSChar* chars = JSStringGetCharactersPtr(jsStringRef);
-    const size_t length = JSStringGetLength(jsStringRef);
-    local_ref<jstring> returnStr = adopt_local(Environment::current()->NewString(chars, length));
-    JSStringRelease(jsStringRef);
-    return returnStr;
-}
-
-static JSValueRef nativeQPLMarkerStart(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[3];
-  if (isReady() && grabDoubles(3, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    int64_t timestamp = (int64_t) targets[2];
-    JQuickPerformanceLoggerProvider::get()->markerStart(markerId, instanceKey, timestamp);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLMarkerEnd(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[4];
-  if (isReady() && grabDoubles(4, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    // NOTE: avoid undefined behavior when the value does not find in int16_t.
-    int16_t actionId = (int16_t) (int32_t) targets[2];
-    int64_t timestamp = (int64_t) targets[3];
-    JQuickPerformanceLoggerProvider::get()->markerEnd(markerId, instanceKey, actionId, timestamp);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLMarkerTag(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[2];
-  if (isReady() && grabDoubles(2, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    local_ref<jstring> tag = getJStringFromJSValueRef(ctx, arguments[2]);
-    JQuickPerformanceLoggerProvider::get()->markerTag(markerId, instanceKey, tag);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLMarkerAnnotate(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[2];
-  if (isReady() && grabDoubles(2, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    local_ref<jstring> key = getJStringFromJSValueRef(ctx, arguments[2]);
-    local_ref<jstring> value = getJStringFromJSValueRef(ctx, arguments[3]);
-    JQuickPerformanceLoggerProvider::get()->markerAnnotate(markerId, instanceKey, key, value);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLMarkerNote(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[4];
-  if (isReady() && grabDoubles(4, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    // NOTE: avoid undefined behavior when the value does not find in int16_t.
-    int16_t actionId = (int16_t) (int32_t) targets[2];
-    int64_t timestamp = (int64_t) targets[3];
-    JQuickPerformanceLoggerProvider::get()->markerNote(markerId, instanceKey, actionId, timestamp);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLMarkerCancel(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  double targets[2];
-  if (isReady() && grabDoubles(2, targets, ctx, argumentCount, arguments, exception)) {
-    int32_t markerId = (int32_t) targets[0];
-    int32_t instanceKey = (int32_t) targets[1];
-    JQuickPerformanceLoggerProvider::get()->markerCancel(markerId, instanceKey);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-static JSValueRef nativeQPLTimestamp(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  if (!isReady()) {
-    return JSValueMakeNumber(ctx, 0);
-  }
-  int64_t timestamp = JQuickPerformanceLoggerProvider::get()->currentMonotonicTimestamp();
-  // Since this is monotonic time, I assume the 52 bits of mantissa are enough in the double value.
-  return JSValueMakeNumber(ctx, timestamp);
-}
-
-static JSValueRef nativeQPLMarkerPoint(
-    JSContextRef ctx,
-    JSObjectRef function,
-    JSObjectRef thisObject,
-    size_t argumentCount,
-    const JSValueRef arguments[],
-    JSValueRef* exception) {
-  if (isReady() && argumentCount == 4) {
-    double markerIdArgument = grabDouble(ctx, arguments, 0, exception);
-    double instanceKeyArgument = grabDouble(ctx, arguments, 2, exception);
-    if (isNan(markerIdArgument) || isNan(instanceKeyArgument)) {
-      return JSValueMakeUndefined(ctx);
-    }
-
-    int32_t markerId = (int32_t) markerIdArgument;
-    local_ref<jstring> name = getJStringFromJSValueRef(ctx, arguments[1]);
-    int32_t instanceKey = (int32_t) instanceKeyArgument;
-    // timestamp is not used as QuickPerformanceLogger::markerPoint with all
-    // params is missing
-    JQuickPerformanceLoggerProvider::get()->markerPoint(markerId, name, instanceKey);
-  }
-  return JSValueMakeUndefined(ctx);
-}
-
-void addNativePerfLoggingHooks(JSGlobalContextRef ctx) {
-  installGlobalFunction(ctx, "nativeQPLMarkerStart", nativeQPLMarkerStart);
-  installGlobalFunction(ctx, "nativeQPLMarkerEnd", nativeQPLMarkerEnd);
-  installGlobalFunction(ctx, "nativeQPLMarkerTag", nativeQPLMarkerTag);
-  installGlobalFunction(ctx, "nativeQPLMarkerAnnotate", nativeQPLMarkerAnnotate);
-  installGlobalFunction(ctx, "nativeQPLMarkerNote", nativeQPLMarkerNote);
-  installGlobalFunction(ctx, "nativeQPLMarkerCancel", nativeQPLMarkerCancel);
-  installGlobalFunction(ctx, "nativeQPLTimestamp", nativeQPLTimestamp);
-  installGlobalFunction(ctx, "nativeQPLMarkerPoint", nativeQPLMarkerPoint);
-}
-
-} }
diff --git a/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.h b/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.h
deleted file mode 100644
index 43805243af2c59..00000000000000
--- a/ReactAndroid/src/main/jni/react/jni/JSCPerfLogging.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <JavaScriptCore/JSContextRef.h>
-
-namespace facebook {
-namespace react {
-
-void addNativePerfLoggingHooks(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactAndroid/src/main/jni/react/jni/JSLoader.cpp b/ReactAndroid/src/main/jni/react/jni/JSLoader.cpp
index aad3433a04ddf8..cb1ba51f9b5104 100644
--- a/ReactAndroid/src/main/jni/react/jni/JSLoader.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JSLoader.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JSLoader.h b/ReactAndroid/src/main/jni/react/jni/JSLoader.h
index 543534a9707b33..20f35bbd33e66d 100644
--- a/ReactAndroid/src/main/jni/react/jni/JSLoader.h
+++ b/ReactAndroid/src/main/jni/react/jni/JSLoader.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JSLogging.cpp b/ReactAndroid/src/main/jni/react/jni/JSLogging.cpp
index bb3762bf06c142..c6993f59427119 100644
--- a/ReactAndroid/src/main/jni/react/jni/JSLogging.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JSLogging.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JSLogging.h b/ReactAndroid/src/main/jni/react/jni/JSLogging.h
index 32dc56c187650a..b4cea0a3cc6254 100644
--- a/ReactAndroid/src/main/jni/react/jni/JSLogging.h
+++ b/ReactAndroid/src/main/jni/react/jni/JSLogging.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.cpp b/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.cpp
index 4d7e52e4945cf9..632c2201aee19f 100644
--- a/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.h b/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.h
index cdd081b69d4f01..56ce28d7d45c75 100644
--- a/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.h
+++ b/ReactAndroid/src/main/jni/react/jni/JavaModuleWrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JavaScriptExecutorHolder.h b/ReactAndroid/src/main/jni/react/jni/JavaScriptExecutorHolder.h
index 7f7141716ede6d..ed9e4b41aeaaa2 100644
--- a/ReactAndroid/src/main/jni/react/jni/JavaScriptExecutorHolder.h
+++ b/ReactAndroid/src/main/jni/react/jni/JavaScriptExecutorHolder.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.cpp b/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.cpp
index 643ef80d2f6125..57b1fe69af972d 100644
--- a/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.h b/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.h
index 17fcd2d6742ed1..86385432c877b4 100644
--- a/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.h
+++ b/ReactAndroid/src/main/jni/react/jni/JniJSModulesUnbundle.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/MethodInvoker.cpp b/ReactAndroid/src/main/jni/react/jni/MethodInvoker.cpp
index 4abba9308cf7e3..9be87fc9957c05 100644
--- a/ReactAndroid/src/main/jni/react/jni/MethodInvoker.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/MethodInvoker.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -49,6 +49,22 @@ jdouble extractDouble(const folly::dynamic& value) {
   }
 }
 
+jint extractInteger(const folly::dynamic& value) {
+  // The logic here is taken from convertDynamicIfIntegral, but the
+  // return type and exception are different.
+  if (value.isInt()) {
+    return value.getInt();
+  }
+  double dbl = value.getDouble();
+  jint result = static_cast<jint>(dbl);
+  if (dbl != result) {
+    throw std::invalid_argument(
+      folly::to<std::string>(
+        "Tried to convert jint argument, but got a non-integral double: ", dbl));
+  }
+  return result;
+}
+
 local_ref<JCxxCallbackImpl::jhybridobject> extractCallback(std::weak_ptr<Instance>& instance, const folly::dynamic& value) {
   if (value.isNull()) {
     return local_ref<JCxxCallbackImpl::jhybridobject>(nullptr);
@@ -101,10 +117,10 @@ jvalue extract(std::weak_ptr<Instance>& instance, char type, dynamic_iterator& i
       value.l = JBoolean::valueOf(static_cast<jboolean>(arg.getBool())).release();
       break;
     case 'i':
-      value.i = static_cast<jint>(arg.getInt());
+      value.i = extractInteger(arg);
       break;
     case 'I':
-      value.l = JInteger::valueOf(static_cast<jint>(arg.getInt())).release();
+      value.l = JInteger::valueOf(extractInteger(arg)).release();
       break;
     case 'f':
       value.f = static_cast<jfloat>(extractDouble(arg));
diff --git a/ReactAndroid/src/main/jni/react/jni/MethodInvoker.h b/ReactAndroid/src/main/jni/react/jni/MethodInvoker.h
index e86ebe1be77db5..386a4bce795b08 100644
--- a/ReactAndroid/src/main/jni/react/jni/MethodInvoker.h
+++ b/ReactAndroid/src/main/jni/react/jni/MethodInvoker.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.cpp b/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.cpp
index e902f603729232..12a7f5a68234ae 100644
--- a/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.h b/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.h
index b179c5ba44e3e4..10f7189bd0a114 100644
--- a/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.h
+++ b/ReactAndroid/src/main/jni/react/jni/ModuleRegistryBuilder.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeArray.cpp b/ReactAndroid/src/main/jni/react/jni/NativeArray.cpp
index 2c6bc8f1d56be3..22783fbbee0da0 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeArray.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/NativeArray.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeArray.h b/ReactAndroid/src/main/jni/react/jni/NativeArray.h
index 54efd849ec0a95..6fa9ddf5be7c98 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeArray.h
+++ b/ReactAndroid/src/main/jni/react/jni/NativeArray.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeCommon.cpp b/ReactAndroid/src/main/jni/react/jni/NativeCommon.cpp
index fd46ea949ee57b..01f5e676f7e74e 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeCommon.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/NativeCommon.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeCommon.h b/ReactAndroid/src/main/jni/react/jni/NativeCommon.h
index 738edb0975476c..227e43fe5d5987 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeCommon.h
+++ b/ReactAndroid/src/main/jni/react/jni/NativeCommon.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.cpp b/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.cpp
index cb7d10fafda477..5a9c007bb24f01 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.h b/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.h
index 957465d7fdb1ff..a991e3a2c03ad3 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.h
+++ b/ReactAndroid/src/main/jni/react/jni/NativeDeltaClient.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeMap.cpp b/ReactAndroid/src/main/jni/react/jni/NativeMap.cpp
index c8c948cd440efa..78b8d1f75aa8ee 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeMap.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/NativeMap.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/NativeMap.h b/ReactAndroid/src/main/jni/react/jni/NativeMap.h
index 7089b6d9fbe520..9c2762c2c26760 100644
--- a/ReactAndroid/src/main/jni/react/jni/NativeMap.h
+++ b/ReactAndroid/src/main/jni/react/jni/NativeMap.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/OnLoad.cpp b/ReactAndroid/src/main/jni/react/jni/OnLoad.cpp
index 75f1300f921f4c..3767097d57492b 100644
--- a/ReactAndroid/src/main/jni/react/jni/OnLoad.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/OnLoad.cpp
@@ -1,15 +1,16 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #include <string>
 
+#include <glog/logging.h>
+
 #include <fb/fbjni.h>
 #include <fb/glog_init.h>
 #include <fb/log.h>
 
-#include "AndroidJSCFactory.h"
 #include "CatalystInstanceImpl.h"
 #include "CxxModuleWrapper.h"
 #include "JavaScriptExecutorHolder.h"
@@ -30,27 +31,6 @@ namespace react {
 
 namespace {
 
-// TODO: can we avoid these wrapper classes, and instead specialize the logic in CatalystInstanceImpl
-class JSCJavaScriptExecutorHolder : public HybridClass<JSCJavaScriptExecutorHolder,
-                                                       JavaScriptExecutorHolder> {
- public:
-  static constexpr auto kJavaDescriptor = "Lcom/facebook/react/bridge/JSCJavaScriptExecutor;";
-
-  static local_ref<jhybriddata> initHybrid(alias_ref<jclass>, ReadableNativeMap* jscConfig) {
-    return makeCxxInstance(makeAndroidJSCExecutorFactory(jscConfig->consume()));
-  }
-
-  static void registerNatives() {
-    registerHybrid({
-      makeNativeMethod("initHybrid", JSCJavaScriptExecutorHolder::initHybrid),
-    });
-  }
-
- private:
-  friend HybridBase;
-  using HybridBase::HybridBase;
-};
-
 struct JavaJSExecutor : public JavaClass<JavaJSExecutor> {
   static constexpr auto kJavaDescriptor = "Lcom/facebook/react/bridge/JavaJSExecutor;";
 };
@@ -83,7 +63,7 @@ class ProxyJavaScriptExecutorHolder : public HybridClass<ProxyJavaScriptExecutor
 extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
   return initialize(vm, [] {
     gloginit::initialize();
-    JSCJavaScriptExecutorHolder::registerNatives();
+    FLAGS_minloglevel = 0;
     ProxyJavaScriptExecutorHolder::registerNatives();
     CatalystInstanceImpl::registerNatives();
     CxxModuleWrapperBase::registerNatives();
diff --git a/ReactAndroid/src/main/jni/react/jni/OnLoad.h b/ReactAndroid/src/main/jni/react/jni/OnLoad.h
index 18682b92560467..d36242e032a5bf 100644
--- a/ReactAndroid/src/main/jni/react/jni/OnLoad.h
+++ b/ReactAndroid/src/main/jni/react/jni/OnLoad.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.cpp b/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.cpp
index d3c17bf21fd11c..2c2e7eac6c0742 100644
--- a/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.h b/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.h
index b5ceb08eb30d1d..7f49594ac5cfba 100644
--- a/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.h
+++ b/ReactAndroid/src/main/jni/react/jni/ProxyExecutor.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.cpp b/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.cpp
index 008738f6af2a67..41f6f2471d2d5e 100644
--- a/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -113,7 +113,7 @@ local_ref<JArrayClass<jobject>> ReadableNativeArray::importTypeArray() {
   jint size = array_.size();
   auto jarray = JArrayClass<jobject>::newArray(size);
   for (jint i = 0; i < size; i++) {
-    jarray->setElement(i, ReadableNativeArray::getType(i).release());
+    jarray->setElement(i, ReadableNativeArray::getType(i).get());
   }
   return jarray;
 }
diff --git a/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.h b/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.h
index e15cae21dbdb0d..f0edbf5d06bd48 100644
--- a/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.h
+++ b/ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.h
@@ -1,4 +1,7 @@
- // Copyright 2004-present Facebook. All Rights Reserved.
+//  Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
 
 #pragma once
 
diff --git a/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.cpp b/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.cpp
index 5c91620ac55051..8d395b3b0929b4 100644
--- a/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.h b/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.h
index 7258adaaeace8b..d754aceef08e98 100644
--- a/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.h
+++ b/ReactAndroid/src/main/jni/react/jni/ReadableNativeMap.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.cpp b/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.cpp
index 20510758b8a4b3..6b7dd0bc6edb79 100644
--- a/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.h b/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.h
index 23dea3eb9fe419..75c9f22749b532 100644
--- a/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.h
+++ b/ReactAndroid/src/main/jni/react/jni/WritableNativeArray.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.cpp b/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.cpp
index f33dcd131796ca..26548e29f5b02f 100644
--- a/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.cpp
+++ b/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.h b/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.h
index 3373350266e644..fe1964146b8008 100644
--- a/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.h
+++ b/ReactAndroid/src/main/jni/react/jni/WritableNativeMap.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/react/perftests/BUCK b/ReactAndroid/src/main/jni/react/perftests/BUCK
index 35b3b1970f51dd..82d64840c981be 100644
--- a/ReactAndroid/src/main/jni/react/perftests/BUCK
+++ b/ReactAndroid/src/main/jni/react/perftests/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "ANDROID", "react_native_xplat_target", "rn_xplat_cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "react_native_xplat_target", "rn_xplat_cxx_library")
 
 rn_xplat_cxx_library(
     name = "perftests",
diff --git a/ReactAndroid/src/main/jni/react/perftests/OnLoad.cpp b/ReactAndroid/src/main/jni/react/perftests/OnLoad.cpp
index b4d5f7d028b396..50d18b4c01fe7f 100644
--- a/ReactAndroid/src/main/jni/react/perftests/OnLoad.cpp
+++ b/ReactAndroid/src/main/jni/react/perftests/OnLoad.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/main/jni/third-party/double-conversion/Android.mk b/ReactAndroid/src/main/jni/third-party/double-conversion/Android.mk
index 025a4e8a1df885..2b8bae0b612876 100644
--- a/ReactAndroid/src/main/jni/third-party/double-conversion/Android.mk
+++ b/ReactAndroid/src/main/jni/third-party/double-conversion/Android.mk
@@ -20,4 +20,4 @@ CXX14_FLAGS := -std=c++14 -Wno-unused-variable -Wno-unused-local-typedefs
 LOCAL_CFLAGS += $(CXX14_FLAGS)
 LOCAL_EXPORT_CPPFLAGS := $(CXX14_FLAGS)
 
-include $(BUILD_STATIC_LIBRARY)
\ No newline at end of file
+include $(BUILD_STATIC_LIBRARY)
diff --git a/ReactAndroid/src/main/jni/third-party/folly/Android.mk b/ReactAndroid/src/main/jni/third-party/folly/Android.mk
index 71dc8593c7b2cc..43e036e8c2f415 100644
--- a/ReactAndroid/src/main/jni/third-party/folly/Android.mk
+++ b/ReactAndroid/src/main/jni/third-party/folly/Android.mk
@@ -2,22 +2,35 @@ LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-	folly/json.cpp \
-	folly/Unicode.cpp \
-	folly/Conv.cpp \
-	folly/Demangle.cpp \
-	folly/detail/MallocImpl.cpp \
-	folly/StringBase.cpp \
-	folly/dynamic.cpp \
-	folly/ScopeGuard.cpp \
+  folly/json.cpp \
+  folly/Unicode.cpp \
+  folly/Conv.cpp \
+  folly/Demangle.cpp \
+  folly/detail/MallocImpl.cpp \
+  folly/StringBase.cpp \
+  folly/dynamic.cpp \
+  folly/ScopeGuard.cpp \
+#  folly/Format.cpp \
+#  folly/json_pointer.cpp \
+#  folly/lang/ColdClass.cpp \
+#  folly/detail/Demangle.cpp \
+#  folly/hash/SpookyHashV2.cpp \
+#  folly/container/detail/F14Table.cpp \
 
 LOCAL_C_INCLUDES := $(LOCAL_PATH)
 LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)
 
-LOCAL_CFLAGS += -fno-omit-frame-pointer
-LOCAL_CXXFLAGS+= -frtti -fexceptions
+LOCAL_CFLAGS += -fexceptions -fno-omit-frame-pointer -frtti -Wno-sign-compare
+
+FOLLY_FLAGS := \
+  -DFOLLY_NO_CONFIG=1 \
+  -DFOLLY_HAVE_CLOCK_GETTIME=1 \
+  -DFOLLY_HAVE_MEMRCHR=1 \
+
+# If APP_PLATFORM in Application.mk targets android-23 above, please comment this line.
+# NDK uses GNU style stderror_r() after API 23.
+# FOLLY_FLAGS += -DFOLLY_HAVE_XSI_STRERROR_R=1
 
-FOLLY_FLAGS := -DFOLLY_NO_CONFIG=1 -DFOLLY_HAVE_CLOCK_GETTIME=1 -DFOLLY_HAVE_MEMRCHR=1
 LOCAL_CFLAGS += $(FOLLY_FLAGS)
 
 LOCAL_EXPORT_CPPFLAGS := $(FOLLY_FLAGS)
diff --git a/ReactAndroid/src/main/jni/third-party/glibc/BUCK b/ReactAndroid/src/main/jni/third-party/glibc/BUCK
index 6668953843f0ad..e3a4f475489193 100644
--- a/ReactAndroid/src/main/jni/third-party/glibc/BUCK
+++ b/ReactAndroid/src/main/jni/third-party/glibc/BUCK
@@ -4,7 +4,9 @@
 
 # libpthread is implicitly included in the android runtime so, when building
 # on an android platform, we don't do anything.
-prebuilt_cxx_library(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_cxx_library(
     name = "pthread",
     exported_platform_linker_flags = [
         (
@@ -26,7 +28,7 @@ prebuilt_cxx_library(
     ],
 )
 
-prebuilt_cxx_library(
+fb_native.prebuilt_cxx_library(
     name = "dl",
     exported_linker_flags = [
         "-ldl",
@@ -37,7 +39,7 @@ prebuilt_cxx_library(
     ],
 )
 
-prebuilt_cxx_library(
+fb_native.prebuilt_cxx_library(
     name = "m",
     exported_linker_flags = [
         "-lm",
@@ -48,7 +50,7 @@ prebuilt_cxx_library(
     ],
 )
 
-prebuilt_cxx_library(
+fb_native.prebuilt_cxx_library(
     name = "rt",
     exported_platform_linker_flags = [
         (
diff --git a/ReactAndroid/src/main/jni/third-party/glog/Android.mk b/ReactAndroid/src/main/jni/third-party/glog/Android.mk
index eea196ea80f1ff..542c35b3c9bf6c 100644
--- a/ReactAndroid/src/main/jni/third-party/glog/Android.mk
+++ b/ReactAndroid/src/main/jni/third-party/glog/Android.mk
@@ -30,4 +30,4 @@ LOCAL_CFLAGS += \
 
 LOCAL_MODULE := glog
 
-include $(BUILD_SHARED_LIBRARY)
\ No newline at end of file
+include $(BUILD_SHARED_LIBRARY)
diff --git a/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libicu_common.so b/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libicu_common.so
new file mode 100644
index 00000000000000..6a089dfe7f3c4b
Binary files /dev/null and b/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libicu_common.so differ
diff --git a/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libjsc.so b/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libjsc.so
new file mode 100644
index 00000000000000..a63d7053e71079
Binary files /dev/null and b/ReactAndroid/src/main/jni/third-party/jsc/jni/arm64-v8a/libjsc.so differ
diff --git a/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libicu_common.so b/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libicu_common.so
new file mode 100644
index 00000000000000..e6e8acf7952bc5
Binary files /dev/null and b/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libicu_common.so differ
diff --git a/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libjsc.so b/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libjsc.so
new file mode 100644
index 00000000000000..28414362cdfa4b
Binary files /dev/null and b/ReactAndroid/src/main/jni/third-party/jsc/jni/x86_64/libjsc.so differ
diff --git a/ReactAndroid/src/main/jniLibs/arm64-v8a/libicu_common.so b/ReactAndroid/src/main/jniLibs/arm64-v8a/libicu_common.so
new file mode 100644
index 00000000000000..6a089dfe7f3c4b
Binary files /dev/null and b/ReactAndroid/src/main/jniLibs/arm64-v8a/libicu_common.so differ
diff --git a/ReactAndroid/src/main/jniLibs/x86_64/libicu_common.so b/ReactAndroid/src/main/jniLibs/x86_64/libicu_common.so
new file mode 100644
index 00000000000000..e6e8acf7952bc5
Binary files /dev/null and b/ReactAndroid/src/main/jniLibs/x86_64/libicu_common.so differ
diff --git a/ReactAndroid/src/main/libraries/fbcore/src/main/java/com/facebook/common/logging/BUCK b/ReactAndroid/src/main/libraries/fbcore/src/main/java/com/facebook/common/logging/BUCK
index 98e1cdf542da68..e8c4380c800a5f 100644
--- a/ReactAndroid/src/main/libraries/fbcore/src/main/java/com/facebook/common/logging/BUCK
+++ b/ReactAndroid/src/main/libraries/fbcore/src/main/java/com/facebook/common/logging/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "logging",
diff --git a/ReactAndroid/src/main/libraries/fbcore/src/test/java/com/facebook/powermock/BUCK b/ReactAndroid/src/main/libraries/fbcore/src/test/java/com/facebook/powermock/BUCK
index 768455a121428b..1473f92d1099f4 100644
--- a/ReactAndroid/src/main/libraries/fbcore/src/test/java/com/facebook/powermock/BUCK
+++ b/ReactAndroid/src/main/libraries/fbcore/src/test/java/com/facebook/powermock/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "powermock",
@@ -25,7 +26,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-core.jar",
     sha1 = "ea04e79244e19dcf0c3ccf6863c5b028b4b58c9c",
     url = "mvn:org.powermock:powermock-core:jar:1.6.2",
@@ -37,7 +38,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-api-mockito.jar",
     sha1 = "c213230ae20a7b422f3d622a261d0e3427d2464c",
     url = "mvn:org.powermock:powermock-api-mockito:jar:1.6.2",
@@ -49,7 +50,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-api-support.jar",
     sha1 = "93b21413b4ee99b7bc0dd34e1416fdca96866aaf",
     url = "mvn:org.powermock:powermock-api-support:jar:1.6.2",
@@ -61,7 +62,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-module-junit4-rule.jar",
     sha1 = "4847638c5729b9f203e21144b0bdb5d34d888473",
     url = "mvn:org.powermock:powermock-module-junit4-rule:jar:1.6.2",
@@ -73,7 +74,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-classloading-xstream.jar",
     sha1 = "3ced31cd7024fe365b9f3c8082d22c02434577da",
     url = "mvn:org.powermock:powermock-classloading-xstream:jar:1.6.2",
@@ -85,7 +86,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-classloading-base.jar",
     sha1 = "c8bfc10731a02d3b241892cf2c334a754d473ca7",
     url = "mvn:org.powermock:powermock-classloading-base:jar:1.6.2",
@@ -97,7 +98,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-xstream.jar",
     sha1 = "97e5013f391487cce4de6b0eebcde21549e91872",
     url = "mvn:com.thoughtworks.xstream:xstream:jar:1.4.2",
@@ -109,7 +110,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-powermock-reflect.jar",
     sha1 = "1af1bbd1207c3ecdcf64973e6f9d57dcd17cc145",
     url = "mvn:org.powermock:powermock-reflect:jar:1.6.2",
@@ -121,7 +122,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-javassist.jar",
     sha1 = "a9cbcdfb7e9f86fbc74d3afae65f2248bfbf82a0",
     url = "mvn:org.javassist:javassist:jar:3.20.0-GA",
@@ -133,7 +134,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-mockito-all.jar",
     sha1 = "539df70269cc254a58cccc5d8e43286b4a73bf30",
     url = "mvn:org.mockito:mockito-all:jar:1.10.19",
@@ -145,7 +146,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-xmlpull.jar",
     sha1 = "2b8e230d2ab644e4ecaa94db7cdedbc40c805dfa",
     url = "mvn:xmlpull:xmlpull:jar:1.1.3.1",
@@ -157,7 +158,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-xpp3.jar",
     sha1 = "19d4e90b43059058f6e056f794f0ea4030d60b86",
     url = "mvn:xpp3:xpp3_min:jar:1.1.4c",
diff --git a/ReactAndroid/src/main/libraries/fresco/fresco-react-native/BUCK b/ReactAndroid/src/main/libraries/fresco/fresco-react-native/BUCK
index f4184df9291f6f..d2fef6923a63bf 100644
--- a/ReactAndroid/src/main/libraries/fresco/fresco-react-native/BUCK
+++ b/ReactAndroid/src/main/libraries/fresco/fresco-react-native/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_android_prebuilt_aar", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_android_prebuilt_aar", "rn_prebuilt_jar")
 
 rn_android_prebuilt_aar(
     name = "fresco-react-native",
@@ -6,19 +7,19 @@ rn_android_prebuilt_aar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "fresco-binary-aar",
     sha1 = "076812472879be341f392c4aab469b8fdf8c6759",
     url = "mvn:com.facebook.fresco:fresco:aar:1.10.0",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
     name = "fresco-drawee",
     aar = ":drawee-binary-aar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "drawee-binary-aar",
     sha1 = "c1fef7cdc5f6e4fd7d7c58522075c6b66f46a52b",
     url = "mvn:com.facebook.fresco:drawee:aar:1.10.0",
@@ -40,7 +41,7 @@ rn_android_prebuilt_aar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "imagepipeline-base-aar",
     sha1 = "56672fa5fa46bf4962adecc7c88a1544f5a20225",
     url = "mvn:com.facebook.fresco:imagepipeline-base:aar:1.10.0",
@@ -52,7 +53,7 @@ rn_android_prebuilt_aar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "imagepipeline-aar",
     sha1 = "e317bdb7f18f0f4ac4f3ab5d3edb49fd09290a6f",
     url = "mvn:com.facebook.fresco:imagepipeline:aar:1.10.0",
@@ -64,31 +65,31 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-bolts.jar",
     sha1 = "d85884acf6810a3bbbecb587f239005cbc846dc4",
     url = "mvn:com.parse.bolts:bolts-tasks:jar:1.4.0",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
     name = "fbcore",
     aar = ":fbcore-aar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "fbcore-aar",
     sha1 = "d79dbf5e47d6e528dd1f90170e0299c14d835ab8",
     url = "mvn:com.facebook.fresco:fbcore:aar:1.10.0",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
     name = "imagepipeline-okhttp3",
     aar = ":imagepipeline-okhttp3-binary-aar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "imagepipeline-okhttp3-binary-aar",
     sha1 = "3429ffb776d7511d0f911fbe9efda4c73179d416",
     url = "mvn:com.facebook.fresco:imagepipeline-okhttp3:aar:1.10.0",
diff --git a/ReactAndroid/src/main/libraries/soloader/java/com/facebook/soloader/BUCK b/ReactAndroid/src/main/libraries/soloader/java/com/facebook/soloader/BUCK
index 5664b7dd7cf168..29ea3d9452c8ae 100644
--- a/ReactAndroid/src/main/libraries/soloader/java/com/facebook/soloader/BUCK
+++ b/ReactAndroid/src/main/libraries/soloader/java/com/facebook/soloader/BUCK
@@ -1,11 +1,13 @@
-android_prebuilt_aar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.android_prebuilt_aar(
     name = "soloader",
     aar = ":soloader-binary-aar",
     visibility = ["PUBLIC"],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "soloader-binary-aar",
-    sha1 = "042357559a6c9313bdb9b1ba137a9df3b5365f35",
-    url = "mvn:com.facebook.soloader:soloader:aar:0.5.1",
+    sha1 = "4de8f64830aff60beb52fb27dffb2fcbe54c39df",
+    url = "mvn:com.facebook.soloader:soloader:aar:0.6.0",
 )
diff --git a/ReactAndroid/src/main/res/BUCK b/ReactAndroid/src/main/res/BUCK
index 00aac50e581045..afb0be006d627c 100644
--- a/ReactAndroid/src/main/res/BUCK
+++ b/ReactAndroid/src/main/res/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_target", "rn_android_resource")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_target", "rn_android_resource")
 
 rn_android_resource(
     name = "devsupport",
diff --git a/ReactAndroid/src/main/res/devsupport/drawable/redbox_top_border_background.xml b/ReactAndroid/src/main/res/devsupport/drawable/redbox_top_border_background.xml
new file mode 100644
index 00000000000000..32e4bbd5644d77
--- /dev/null
+++ b/ReactAndroid/src/main/res/devsupport/drawable/redbox_top_border_background.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
+    <item>
+        <shape android:shape="rectangle" >
+            <solid android:color="#1A1A1A" />
+        </shape>
+    </item>
+
+    <item android:bottom="-2dp" android:right="-2dp" android:left="-2dp">
+        <shape>
+            <solid android:color="@android:color/transparent" />
+            <stroke
+                android:width="1dp"
+                android:color="#B3B3B3" />
+        </shape>
+    </item>
+</layer-list>
diff --git a/ReactAndroid/src/main/res/devsupport/layout/redbox_item_frame.xml b/ReactAndroid/src/main/res/devsupport/layout/redbox_item_frame.xml
index ad23cbf4749827..98d808082e48c3 100644
--- a/ReactAndroid/src/main/res/devsupport/layout/redbox_item_frame.xml
+++ b/ReactAndroid/src/main/res/devsupport/layout/redbox_item_frame.xml
@@ -19,7 +19,7 @@
     android:id="@+id/rn_frame_file"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:textColor="#E6B8B8"
+    android:textColor="#B3B3B3"
     android:textSize="12sp"
     android:fontFamily="monospace"
     />
diff --git a/ReactAndroid/src/main/res/devsupport/layout/redbox_item_title.xml b/ReactAndroid/src/main/res/devsupport/layout/redbox_item_title.xml
index 8091fb4d32574e..97360378c4e36d 100644
--- a/ReactAndroid/src/main/res/devsupport/layout/redbox_item_title.xml
+++ b/ReactAndroid/src/main/res/devsupport/layout/redbox_item_title.xml
@@ -7,4 +7,5 @@
   android:textColor="@android:color/white"
   android:textSize="16sp"
   android:textStyle="bold"
+  android:background="#D01926"
   />
diff --git a/ReactAndroid/src/main/res/devsupport/layout/redbox_view.xml b/ReactAndroid/src/main/res/devsupport/layout/redbox_view.xml
index 832ac4fb877e63..6f23319ecba3b8 100644
--- a/ReactAndroid/src/main/res/devsupport/layout/redbox_view.xml
+++ b/ReactAndroid/src/main/res/devsupport/layout/redbox_view.xml
@@ -3,7 +3,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:background="#E80000"
+    android:background="#1A1A1A"
     >
     <ListView
         android:id="@+id/rn_redbox_stack"
@@ -53,6 +53,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
+        android:background="@drawable/redbox_top_border_background"
         >
         <Button
             android:id="@+id/rn_redbox_dismiss_button"
diff --git a/ReactAndroid/src/main/res/devsupport/values/strings.xml b/ReactAndroid/src/main/res/devsupport/values/strings.xml
index 594be948cb3f7a..29411de6e7aa8f 100644
--- a/ReactAndroid/src/main/res/devsupport/values/strings.xml
+++ b/ReactAndroid/src/main/res/devsupport/values/strings.xml
@@ -21,7 +21,7 @@
   <string name="catalyst_dismiss_button" project="catalyst" translatable="false">Dismiss\n(ESC)</string>
   <string name="catalyst_reload_button" project="catalyst" translatable="false">Reload\n(R,\u00A0R)</string>
   <string name="catalyst_poke_sampling_profiler" project="catalyst" translatable="false">Start/Stop Sampling Profiler</string>
-  <string name="catalyst_copy_button" project="catalyst" translatable="false">Copy</string>
+  <string name="catalyst_copy_button" project="catalyst" translatable="false">Copy\n</string>
   <string name="catalyst_report_button" project="catalyst" translatable="false">Report</string>
   <string name="catalyst_loading_from_url" project="catalyst" translatable="false">Loading from %1$s…</string>
 </resources>
diff --git a/ReactAndroid/src/main/third-party/android/support-annotations/BUCK b/ReactAndroid/src/main/third-party/android/support-annotations/BUCK
index 80a5ef65b053f4..9aebeece59c25c 100644
--- a/ReactAndroid/src/main/third-party/android/support-annotations/BUCK
+++ b/ReactAndroid/src/main/third-party/android/support-annotations/BUCK
@@ -1,11 +1,13 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "android-support-annotations",
     binary_jar = ":support-annotations-binary.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "support-annotations-binary.jar",
-    sha1 = "39ded76b5e1ce1c5b2688e1d25cdc20ecee32007",
-    url = "mvn:com.android.support:support-annotations:jar:27.1.1",
+    sha1 = "ed73f5337a002d1fd24339d5fb08c2c9d9ca60d8",
+    url = "mvn:com.android.support:support-annotations:jar:28.0.0",
 )
diff --git a/ReactAndroid/src/main/third-party/android/support/BUCK b/ReactAndroid/src/main/third-party/android/support/BUCK
new file mode 100644
index 00000000000000..2c67956ac8e478
--- /dev/null
+++ b/ReactAndroid/src/main/third-party/android/support/BUCK
@@ -0,0 +1,26 @@
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
+
+rn_android_library(
+    name = "support-v4",
+    visibility = ["PUBLIC"],
+    exported_deps = [
+        react_native_dep("third-party/android/support:support-v4"),
+    ],
+)
+
+rn_android_library(
+    name = "appcompat-v7",
+    visibility = ["PUBLIC"],
+    exported_deps = [
+        react_native_dep("third-party/android/support:support-v4"),
+    ],
+)
+
+# a fake genrule so that BUCK files in react native are preseable in fbsource
+fb_native.genrule(
+    name = "appcompat-res-cmd",
+    out = ".",
+    bash = "ls",
+    visibility = ["PUBLIC"],
+)
diff --git a/ReactAndroid/src/main/third-party/android/support/v4/BUCK b/ReactAndroid/src/main/third-party/android/support/v4/BUCK
index 27aec407f2907b..214f0facbff019 100644
--- a/ReactAndroid/src/main/third-party/android/support/v4/BUCK
+++ b/ReactAndroid/src/main/third-party/android/support/v4/BUCK
@@ -1,114 +1,370 @@
-android_library(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.android_library(
     name = "lib-support-v4",
     visibility = ["PUBLIC"],
     exported_deps = [
-        ":android-lifecycle-common",
-        ":android-lifecycle-core",
-        ":android-lifecycle-runtime",
-        ":android-lifecycle-viewmodel",
-        ":lib-support-v4-support-compat",
-        ":lib-support-v4-support-core-ui",
-        ":lib-support-v4-support-core-utils",
-        ":lib-support-v4-support-fragment",
+        ":animated-vector-drawable",
+        ":arch-common",
+        ":arch-runtime",
+        ":asynclayoutinflater",
+        ":collections",
+        ":coordinatorlayout",
+        ":cursoradapter",
+        ":customview",
+        ":documentfile",
+        ":drawerlayout",
+        ":interpolator",
+        ":support-annotations",
+        ":support-compat",
+        ":support-core-ui",
+        ":support-core-utils",
+        ":support-vector-drawable",
+        ":support-fragment",
         ":lib-support-v4-support-media-compat",
+        ":lifecycle-common",
+        ":lifecycle-runtime",
+        ":lifecycle-viewmodel",
+        ":livedata-core",
+        ":livedata",
+        ":loader",
+        ":localbroadcastmanager",
+        ":print",
+        ":slidingpanelayout",
+        ":swiperefreshlayout",
+        ":versionedparcelable",
+        ":viewpager",
     ],
 )
 
-prebuilt_jar(
-    name = "android-lifecycle-common",
-    binary_jar = ":android-lifecycle-common.jar",
+fb_native.android_prebuilt_aar(
+    name = "animated-vector-drawable",
+    aar = ":animated-vector-drawable-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "asynclayoutinflater",
+    aar = ":asynclayoutinflater-aar",
+)
+
+fb_native.prebuilt_jar(
+    name = "lifecycle-common",
+    binary_jar = ":lifecycle-common.jar",
+)
+
+fb_native.prebuilt_jar(
+    name = "arch-common",
+    binary_jar = ":arch-common.jar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "arch-runtime",
+    aar = ":arch-runtime-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "lifecycle-runtime",
+    aar = ":lifecycle-runtime-aar",
 )
 
-prebuilt_jar(
-    name = "android-lifecycle-core",
-    binary_jar = ":android-lifecycle-core.jar",
+fb_native.android_prebuilt_aar(
+    name = "lifecycle-viewmodel",
+    aar = ":lifecycle-viewmodel-aar",
 )
 
-android_prebuilt_aar(
-    name = "android-lifecycle-runtime",
-    aar = ":android-lifecycle-runtime-aar",
+fb_native.prebuilt_jar(
+    name = "collections",
+    binary_jar = ":collections.jar",
 )
 
-android_prebuilt_aar(
-    name = "android-lifecycle-viewmodel",
-    aar = ":android-lifecycle-viewmodel-aar",
+fb_native.android_prebuilt_aar(
+    name = "coordinatorlayout",
+    aar = ":coordinatorlayout-aar",
 )
 
-android_prebuilt_aar(
-    name = "lib-support-v4-support-compat",
-    aar = ":lib-support-v4-support-compat-aar",
+fb_native.android_prebuilt_aar(
+    name = "cursoradapter",
+    aar = ":cursoradapter-aar",
 )
 
-android_prebuilt_aar(
-    name = "lib-support-v4-support-core-utils",
-    aar = ":lib-support-v4-support-core-utils-aar",
+fb_native.android_prebuilt_aar(
+    name = "customview",
+    aar = ":customview-aar",
 )
 
-android_prebuilt_aar(
-    name = "lib-support-v4-support-core-ui",
-    aar = ":lib-support-v4-support-core-ui-aar",
+fb_native.android_prebuilt_aar(
+    name = "documentfile",
+    aar = ":documentfile-aar",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
+    name = "drawerlayout",
+    aar = ":drawerlayout-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "interpolator",
+    aar = ":interpolator-aar",
+)
+
+fb_native.prebuilt_jar(
+    name = "support-annotations",
+    binary_jar = ":support-annotations.jar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "support-compat",
+    aar = ":support-compat-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "support-core-utils",
+    aar = ":support-core-utils-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "support-core-ui",
+    aar = ":support-core-ui-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "support-vector-drawable",
+    aar = ":support-vector-drawable-aar",
+)
+
+fb_native.android_prebuilt_aar(
     name = "lib-support-v4-support-media-compat",
     aar = ":lib-support-v4-support-media-compat-aar",
 )
 
-android_prebuilt_aar(
-    name = "lib-support-v4-support-fragment",
-    aar = ":lib-support-v4-support-fragment-aar",
+fb_native.android_prebuilt_aar(
+    name = "support-fragment",
+    aar = ":support-fragment-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "livedata-core",
+    aar = ":livedata-core-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "livedata",
+    aar = ":livedata-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "loader",
+    aar = ":loader-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "localbroadcastmanager",
+    aar = ":localbroadcastmanager-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "print",
+    aar = ":print-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "slidingpanelayout",
+    aar = ":slidingpanelayout-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "swiperefreshlayout",
+    aar = ":swiperefreshlayout-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "versionedparcelable",
+    aar = ":versionedparcelable-aar",
+)
+
+fb_native.android_prebuilt_aar(
+    name = "viewpager",
+    aar = ":viewpager-aar",
 )
 
-remote_file(
-    name = "android-lifecycle-runtime-aar",
-    sha1 = "95428e5f6bf6875a6a1125d2157c3836a1a837f5",
-    url = "mvn:android.arch.lifecycle:runtime:aar:1.1.0",
+# remote files
+fb_native.remote_file(
+    name = "asynclayoutinflater-aar",
+    sha1 = "3ae7643d120e6da3adbe2d698de923f48c904d1f",
+    url = "mvn:com.android.support:asynclayoutinflater:aar:28.0.0",
 )
 
-remote_file(
-    name = "android-lifecycle-common.jar",
-    sha1 = "0edf3f7bfb84a7521d0599efa3b0113a0ee90f85",
-    url = "mvn:android.arch.lifecycle:common:jar:1.1.0",
+fb_native.remote_file(
+    name = "lifecycle-runtime-aar",
+    sha1 = "4286e1ae9364b485cb2ff7a370e355b7c570015b",
+    url = "mvn:android.arch.lifecycle:runtime:aar:1.1.1",
 )
 
-remote_file(
-    name = "android-lifecycle-core.jar",
-    sha1 = "8007981f7d7540d89cd18471b8e5dcd2b4f99167",
-    url = "mvn:android.arch.core:common:jar:1.1.0",
+fb_native.remote_file(
+    name = "lifecycle-common.jar",
+    sha1 = "207a6efae6a3555e326de41f76bdadd9a239cbce",
+    url = "mvn:android.arch.lifecycle:common:jar:1.1.1",
 )
 
-remote_file(
-    name = "android-lifecycle-viewmodel-aar",
-    sha1 = "74ee369b874da61b5b81bebd7b8df0c2577309c8",
-    url = "mvn:android.arch.lifecycle:viewmodel:aar:1.1.0",
+fb_native.remote_file(
+    name = "arch-common.jar",
+    sha1 = "e55b70d1f5620db124b3e85a7f4bdc7bd48d9f95",
+    url = "mvn:android.arch.core:common:jar:1.1.1",
 )
 
-remote_file(
-    name = "lib-support-v4-support-compat-aar",
-    sha1 = "a55ad550d0b84c7fec7ecca012690636062c0e64",
-    url = "mvn:com.android.support:support-compat:aar:27.1.1",
+fb_native.remote_file(
+    name = "arch-runtime-aar",
+    sha1 = "a7e27caf787e14c0d8417be907f4a31f0306acb2",
+    url = "mvn:android.arch.core:runtime:aar:1.1.1",
 )
 
-remote_file(
-    name = "lib-support-v4-support-core-utils-aar",
-    sha1 = "b3a7a4040fda0c5138dbc8c477103b6723b9dbe6",
-    url = "mvn:com.android.support:support-core-utils:aar:27.1.1",
+
+fb_native.remote_file(
+    name = "lifecycle-viewmodel-aar",
+    sha1 = "897b6e22c8357b23ab0c7600c961549c098f5ccf",
+    url = "mvn:android.arch.lifecycle:viewmodel:aar:1.1.1",
+)
+
+fb_native.remote_file(
+    name = "collections.jar",
+    sha1 = "c1bcdade4d3cc2836130424a3f3e4182c666a745",
+    url = "mvn:com.android.support:collections:jar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "coordinatorlayout-aar",
+    sha1 = "7a708aac3443762e58e84368040a6a23b2c63545",
+    url = "mvn:com.android.support:coordinatorlayout:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "cursoradapter-aar",
+    sha1 = "d803f573799e6cd2db8839e2a70fe6ad67e86b79",
+    url = "mvn:com.android.support:cursoradapter:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "customview-aar",
+    sha1 = "423fe0f417f2f8d9c718c2cf73f9253da43f1f11",
+    url = "mvn:com.android.support:customview:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "documentfile-aar",
+    sha1 = "1187e4a23ff6250b096249c734bdabf5403c6ba9",
+    url = "mvn:com.android.support:documentfile:aar:28.0.0",
 )
 
-remote_file(
-    name = "lib-support-v4-support-core-ui-aar",
-    sha1 = "f9acdb8a4c3a9fe883fd7fa5efd3f0426bb9dcda",
-    url = "mvn:com.android.support:support-core-ui:aar:27.1.1",
+fb_native.remote_file(
+    name = "drawerlayout-aar",
+    sha1 = "4de65d42b8e1b7f0ba40b5f35e5d4bafcd70019f",
+    url = "mvn:com.android.support:drawerlayout:aar:28.0.0",
 )
 
-remote_file(
+fb_native.remote_file(
+    name = "interpolator-aar",
+    sha1 = "5d501569c8f7b667c47333a0b873aa529e0a0b9c",
+    url = "mvn:com.android.support:interpolator:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-annotations.jar",
+    sha1 = "ed73f5337a002d1fd24339d5fb08c2c9d9ca60d8",
+    url = "mvn:com.android.support:support-annotations:jar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-compat-aar",
+    sha1 = "d252b640ed832cf8addc35ef0a9f9186dc7738a5",
+    url = "mvn:com.android.support:support-compat:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-core-utils-aar",
+    sha1 = "29b1bb783f1a86eba7f1618bad58842bde72892a",
+    url = "mvn:com.android.support:support-core-utils:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-core-ui-aar",
+    sha1 = "96035b1030d7c3a81903966c2fa52117d36aa5b7",
+    url = "mvn:com.android.support:support-core-ui:aar:28.0.0",
+)
+
+fb_native.remote_file(
     name = "lib-support-v4-support-media-compat-aar",
-    sha1 = "10e309e2cc22ff4cab30bd5f573e4bb30be707ad",
-    url = "mvn:com.android.support:support-media-compat:aar:27.1.1",
+    sha1 = "b7ab2145c7f70e303cfe2e44667d61441b5b558c",
+    url = "mvn:com.android.support:support-media-compat:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-fragment-aar",
+    sha1 = "f21c8a8700b30dc57cb6277ae3c4c168a94a4e81",
+    url = "mvn:com.android.support:support-fragment:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "livedata-core-aar",
+    sha1 = "30ede25cb577323f039c2e3d72b3b56526a2b2e6",
+    url = "mvn:android.arch.lifecycle:livedata-core:aar:1.1.1",
+)
+
+fb_native.remote_file(
+    name = "livedata-aar",
+    sha1 = "82e0b1bf2dc8ce23898cf433cc150df7b3dba952",
+    url = "mvn:android.arch.lifecycle:livedata:aar:1.1.1",
+)
+
+fb_native.remote_file(
+    name = "loader-aar",
+    sha1 = "49a297a4635e01ed55f31b5d4a718ba3416fde3d",
+    url = "mvn:com.android.support:loader:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "localbroadcastmanager-aar",
+    sha1 = "5c498cb7e2fa5910d6c50e28531c55b77d6bf0f6",
+    url = "mvn:com.android.support:localbroadcastmanager:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "print-aar",
+    sha1 = "d2c60bfbbdc2eadd4ff7c8f65743fab830339743",
+    url = "mvn:com.android.support:print:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "slidingpanelayout-aar",
+    sha1 = "20468e3ec8f36dc84846ddd99ff30516f4ffd05a",
+    url = "mvn:com.android.support:slidingpanelayout:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "swiperefreshlayout-aar",
+    sha1 = "bfa669303f0ac8a83d9c878fafadc2936625f781",
+    url = "mvn:com.android.support:swiperefreshlayout:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "versionedparcelable-aar",
+    sha1 = "90432a1e322e0e0bad2116dff0e64c708514808f",
+    url = "mvn:com.android.support:versionedparcelable:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "support-vector-drawable-aar",
+    sha1 = "80387886ef55af284d8253e52d321f93b3f923dd",
+    url = "mvn:com.android.support:support-vector-drawable:aar:28.0.0",
+)
+
+fb_native.remote_file(
+    name = "viewpager-aar",
+    sha1 = "f513ecf69dfea8b60987bd3e869970300ba7c0eb",
+    url = "mvn:com.android.support:viewpager:aar:28.0.0",
 )
 
-remote_file(
-    name = "lib-support-v4-support-fragment-aar",
-    sha1 = "eb8053ebf038b7561c29e5e8964664fac05f375e",
-    url = "mvn:com.android.support:support-fragment:aar:27.1.1",
+fb_native.remote_file(
+    name = "animated-vector-drawable-aar",
+    sha1 = "e2d41c2a032145313f42ab38a2d9757c5d1ebc19",
+    url = "mvn:com.android.support:animated-vector-drawable:aar:28.0.0",
 )
diff --git a/ReactAndroid/src/main/third-party/android/support/v7/appcompat-orig/BUCK b/ReactAndroid/src/main/third-party/android/support/v7/appcompat-orig/BUCK
index 2239c5692eaafd..7039979d3224e0 100644
--- a/ReactAndroid/src/main/third-party/android/support/v7/appcompat-orig/BUCK
+++ b/ReactAndroid/src/main/third-party/android/support/v7/appcompat-orig/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_android_resource", "react_native_dep", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library", "rn_android_resource", "rn_prebuilt_jar")
 
 # This is a bit messy and hopefully a temporary thing
 # The problem is that Gradle extracts appcompat resources into app namespace, com.facebook.react
@@ -37,26 +38,26 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-genrule(
+fb_native.genrule(
     name = "classes-unpacker-cmd",
     out = "classes.jar",
     cmd = "$(exe :aar-unpacker) $(location :appcompat-binary-aar) classes.jar $OUT",
 )
 
-genrule(
+fb_native.genrule(
     name = "res-unpacker-cmd",
     out = "res",
     cmd = "$(exe :aar-unpacker) $(location :appcompat-binary-aar) res/ $OUT",
     visibility = ["//ReactAndroid/..."],
 )
 
-python_binary(
+fb_native.python_binary(
     name = "aar-unpacker",
     main = "aar-unpacker.py",
 )
 
-remote_file(
+fb_native.remote_file(
     name = "appcompat-binary-aar",
-    sha1 = "22b1ef4ff9ef1a3513c18eb132d597eac6ef1a86",
-    url = "mvn:com.android.support:appcompat-v7:aar:27.1.1",
+    sha1 = "132586ec59604a86703796851a063a0ac61f697b",
+    url = "mvn:com.android.support:appcompat-v7:aar:28.0.0",
 )
diff --git a/ReactAndroid/src/main/third-party/java/asm/BUCK b/ReactAndroid/src/main/third-party/java/asm/BUCK
index ab6a14a06d6c84..c56db5422144ea 100644
--- a/ReactAndroid/src/main/third-party/java/asm/BUCK
+++ b/ReactAndroid/src/main/third-party/java/asm/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "asm",
@@ -18,7 +19,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-asm.jar",
     sha1 = "2fd56467a018aafe6ec6a73ccba520be4a7e1565",
     url = "mvn:org.ow2.asm:asm:jar:5.0.1",
@@ -30,7 +31,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-asm-commons.jar",
     sha1 = "7b7147a390a93a14d2edfdcf3f7b0e87a0939c3e",
     url = "mvn:org.ow2.asm:asm-commons:jar:5.0.1",
@@ -42,7 +43,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-asm-tree.jar",
     sha1 = "1b1e6e9d869acd704056d0a4223071a511c619e6",
     url = "mvn:org.ow2.asm:asm-tree:jar:5.0.1",
@@ -54,7 +55,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-asm-util.jar",
     sha1 = "7c8caddfbd0b2d7b844f8fcc75175b9cb9cf4724",
     url = "mvn:org.ow2.asm:asm-util:jar:5.0.1",
@@ -66,7 +67,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-asm-analysis.jar",
     sha1 = "e286fbee48efacb4e7c175f7948d9d8b2ab52352",
     url = "mvn:org.ow2.asm:asm-analysis:jar:5.0.1",
diff --git a/ReactAndroid/src/main/third-party/java/buck-android-support/BUCK b/ReactAndroid/src/main/third-party/java/buck-android-support/BUCK
index c13c72c46d3b2c..8fea3737cd28aa 100644
--- a/ReactAndroid/src/main/third-party/java/buck-android-support/BUCK
+++ b/ReactAndroid/src/main/third-party/java/buck-android-support/BUCK
@@ -1,7 +1,8 @@
-load("//ReactNative:DEFS.bzl", "react_native_integration_tests_target")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_integration_tests_target")
 
 # this lib was compiled by buck version : 6cbf2709778ea352a169d1c84e3ef2894dfa39ec
-prebuilt_jar(
+fb_native.prebuilt_jar(
     name = "buck-android-support",
     binary_jar = "buck-android-support.jar",
     visibility = [
diff --git a/ReactAndroid/src/main/third-party/java/fest/BUCK b/ReactAndroid/src/main/third-party/java/fest/BUCK
index 49161934e04f77..10f995f166d306 100644
--- a/ReactAndroid/src/main/third-party/java/fest/BUCK
+++ b/ReactAndroid/src/main/third-party/java/fest/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "fest",
@@ -15,7 +16,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "fest-binary.jar",
     sha1 = "cb7c91cf614901928ae405f19d9bcdedf82781db",
     url = "mvn:org.easytesting:fest-assert-core:jar:2.0M10",
@@ -27,7 +28,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "fest-util-binary.jar",
     sha1 = "c4a8d7305b23b8d043be12c979813b096df11f44",
     url = "mvn:org.easytesting:fest-util:jar:1.2.5",
diff --git a/ReactAndroid/src/main/third-party/java/infer-annotations/BUCK b/ReactAndroid/src/main/third-party/java/infer-annotations/BUCK
index 1862f176ac2730..481e44b8e07122 100644
--- a/ReactAndroid/src/main/third-party/java/infer-annotations/BUCK
+++ b/ReactAndroid/src/main/third-party/java/infer-annotations/BUCK
@@ -1,11 +1,13 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "infer-annotations",
     binary_jar = ":infer-annotations.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "infer-annotations.jar",
     sha1 = "f514ff4ca022a579d9cf7524846988b646ae4491",
     url = "mvn:com.facebook.infer.annotation:infer-annotation:jar:0.11.2",
-)
\ No newline at end of file
+)
diff --git a/ReactAndroid/src/main/third-party/java/javapoet/BUCK b/ReactAndroid/src/main/third-party/java/javapoet/BUCK
index 769b174f34e5d3..cf2a2c77fa7f70 100644
--- a/ReactAndroid/src/main/third-party/java/javapoet/BUCK
+++ b/ReactAndroid/src/main/third-party/java/javapoet/BUCK
@@ -1,10 +1,12 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "javapoet",
     binary_jar = ":jsr305-binary.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "jsr305-binary.jar",
     sha1 = "ad3ba65c1788f4d814a4da056323e2b84412fb3c",
     url = "mvn:com.squareup:javapoet:jar:1.2.0",
diff --git a/ReactAndroid/src/main/third-party/java/jsr-305/BUCK b/ReactAndroid/src/main/third-party/java/jsr-305/BUCK
index 494c6479d213c9..8833e61c52d2b0 100644
--- a/ReactAndroid/src/main/third-party/java/jsr-305/BUCK
+++ b/ReactAndroid/src/main/third-party/java/jsr-305/BUCK
@@ -1,10 +1,12 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "jsr-305",
     binary_jar = ":jsr305-binary.jar",
     visibility = ["PUBLIC"],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "jsr305-binary.jar",
     sha1 = "25ea2e8b0c338a877313bd4672d3fe056ea78f0d",
     url = "mvn:com.google.code.findbugs:jsr305:jar:3.0.2",
diff --git a/ReactAndroid/src/main/third-party/java/jsr-330/BUCK b/ReactAndroid/src/main/third-party/java/jsr-330/BUCK
index def136484a7574..24ab990280a8b0 100644
--- a/ReactAndroid/src/main/third-party/java/jsr-330/BUCK
+++ b/ReactAndroid/src/main/third-party/java/jsr-330/BUCK
@@ -1,10 +1,12 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "jsr-330",
     binary_jar = ":jsr330-binary.jar",
     visibility = ["PUBLIC"],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "jsr330-binary.jar",
     sha1 = "6975da39a7040257bd51d21a231b76c915872d38",
     url = "mvn:javax.inject:javax.inject:jar:1",
diff --git a/ReactAndroid/src/main/third-party/java/junit/BUCK b/ReactAndroid/src/main/third-party/java/junit/BUCK
index f2f71cd046448f..9f4cbec6221d28 100644
--- a/ReactAndroid/src/main/third-party/java/junit/BUCK
+++ b/ReactAndroid/src/main/third-party/java/junit/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "junit",
@@ -15,7 +16,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-junit.jar",
     sha1 = "2973d150c0dc1fefe998f834810d68f278ea58ec",
     url = "mvn:junit:junit:jar:4.12",
@@ -27,7 +28,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-hamcrest.jar",
     sha1 = "63a21ebc981131004ad02e0434e799fd7f3a8d5a",
     url = "mvn:org.hamcrest:hamcrest-all:jar:1.3",
diff --git a/ReactAndroid/src/main/third-party/java/mockito/BUCK b/ReactAndroid/src/main/third-party/java/mockito/BUCK
index 0048b36445e894..a7f91609227a4c 100644
--- a/ReactAndroid/src/main/third-party/java/mockito/BUCK
+++ b/ReactAndroid/src/main/third-party/java/mockito/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "mockito",
@@ -15,7 +16,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "mockito-binary.jar",
     sha1 = "c54c55cae0f4742ad6bf8a1987ada35363f2c4e2",
     url = "mvn:org.mockito:mockito-core:jar:2.19.1",
@@ -27,7 +28,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "objenesis-binary.jar",
     sha1 = "87c0ea803b69252868d09308b4618f766f135a96",
     url = "mvn:org.objenesis:objenesis:jar:2.1",
diff --git a/ReactAndroid/src/main/third-party/java/okhttp/BUCK b/ReactAndroid/src/main/third-party/java/okhttp/BUCK
index 64dc55f36c99d2..a94361d367e6ea 100644
--- a/ReactAndroid/src/main/third-party/java/okhttp/BUCK
+++ b/ReactAndroid/src/main/third-party/java/okhttp/BUCK
@@ -1,23 +1,25 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "okhttp3",
     binary_jar = ":okhttp3-binary.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "okhttp3-binary.jar",
-    sha1 = "7ef0f1d95bf4c0b3ba30bbae25e0e562b05cf75e",
-    url = "mvn:com.squareup.okhttp3:okhttp:jar:3.10.0",
+    sha1 = "dc6d02e4e68514eff5631963e28ca7742ac69efe",
+    url = "mvn:com.squareup.okhttp3:okhttp:jar:3.12.1",
 )
 
-prebuilt_jar(
+fb_native.prebuilt_jar(
     name = "okhttp3-urlconnection",
     binary_jar = ":okhttp3-urlconnection-binary.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "okhttp3-urlconnection-binary.jar",
-    sha1 = "ec614c05825ddd2267677a99f585d3913474b125",
-    url = "mvn:com.squareup.okhttp3:okhttp-urlconnection:jar:3.10.0",
+    sha1 = "f689d3657c3f1fdbde4877bcddc668491a4ad46f",
+    url = "mvn:com.squareup.okhttp3:okhttp-urlconnection:jar:3.12.1",
 )
diff --git a/ReactAndroid/src/main/third-party/java/okio/BUCK b/ReactAndroid/src/main/third-party/java/okio/BUCK
index 1219ad4697cfe8..dfec687f2604d5 100644
--- a/ReactAndroid/src/main/third-party/java/okio/BUCK
+++ b/ReactAndroid/src/main/third-party/java/okio/BUCK
@@ -1,11 +1,13 @@
-prebuilt_jar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.prebuilt_jar(
     name = "okio",
     binary_jar = ":okio-binary.jar",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "okio-binary.jar",
-    sha1 = "102d7be47241d781ef95f1581d414b0943053130",
-    url = "mvn:com.squareup.okio:okio:jar:1.14.0",
+    sha1 = "bc28b5a964c8f5721eb58ee3f3c47a9bcbf4f4d8",
+    url = "mvn:com.squareup.okio:okio:jar:1.15.0",
 )
diff --git a/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/BUCK b/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/BUCK
index 1df19014bcd283..a24c0db48b21e3 100644
--- a/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/BUCK
+++ b/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "robolectric",
@@ -26,7 +27,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-binary.jar",
     sha1 = "f888cea3bc1a24110e315eb9827ab593610ea62f",
     url = "mvn:org.robolectric:robolectric:jar:3.0",
@@ -38,7 +39,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-resources-binary.jar",
     sha1 = "1ab609054aab67cd13a434567467f4b4774f2465",
     url = "mvn:org.robolectric:robolectric-resources:jar:3.0",
@@ -50,7 +51,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-annotations-binary.jar",
     sha1 = "2a6cfc072d7680694c1ff893c5dc8fec33163110",
     url = "mvn:org.robolectric:robolectric-annotations:jar:3.0",
@@ -62,7 +63,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-utils-binary.jar",
     sha1 = "4bcecd8115fe7296088bb1636e6cbd7ae8927392",
     url = "mvn:org.robolectric:robolectric-utils:jar:3.0",
@@ -74,7 +75,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "bouncycastle-binary.jar",
     sha1 = "ce091790943599535cbb4de8ede84535b0c1260c",
     url = "mvn:org.bouncycastle:bcprov-jdk16:jar:1.46",
@@ -86,7 +87,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "vtd-xml-binary.jar",
     sha1 = "ee5bcf62c1acf76434ee9f1c67a840bafef72a6d",
     url = "mvn:com.ximpleware:vtd-xml:jar:2.11",
@@ -98,7 +99,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "icu-binary.jar",
     sha1 = "786d9055d4ca8c1aab4a7d4ac8283f973fd7e41f",
     url = "mvn:com.ibm.icu:icu4j:jar:53.1",
@@ -112,13 +113,13 @@ rn_prebuilt_jar(
 
 # This new rule will make the .jar file appear in the "right" location,
 # though that may change in the future
-export_file(
+fb_native.export_file(
     name = "robolectric-android-all-binary.jar",
     src = ":robolectric-android-all-binary-remote.jar",
     out = "../android-all-4.1.2_r1-robolectric-0.jar",  # name defines filename used by robolectric in runtime
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-android-all-binary-remote.jar",
     sha1 = "aecc8ce5119a25fcea1cdf8285469c9d1261a352",
     url = "mvn:org.robolectric:android-all:jar:4.1.2_r1-robolectric-0",
@@ -130,13 +131,13 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-export_file(
+fb_native.export_file(
     name = "json.jar",
     src = ":json-remote.jar",
     out = "../json-20080701.jar",  # name defines filename used by robolectric in runtime
 )
 
-remote_file(
+fb_native.remote_file(
     name = "json-remote.jar",
     sha1 = "d652f102185530c93b66158b1859f35d45687258",
     url = "mvn:org.json:json:jar:20080701",
@@ -148,13 +149,13 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-export_file(
+fb_native.export_file(
     name = "tagsoup.jar",
     src = ":tagsoup-remote.jar",
     out = "../tagsoup-1.2.jar",  # name defines filename used by robolectric in runtime
 )
 
-remote_file(
+fb_native.remote_file(
     name = "tagsoup-remote.jar",
     sha1 = "639fd364750d7363c85797dc944b4a80f78fa684",
     url = "mvn:org.ccil.cowan.tagsoup:tagsoup:jar:1.2",
@@ -166,13 +167,13 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-export_file(
+fb_native.export_file(
     name = "robolectric-shadows-binary.jar",
     src = ":robolectric-shadows-binary-remote.jar",
     out = "../shadows-core-3.0-16.jar",  # name defines filename used by robolectric in runtime
 )
 
-remote_file(
+fb_native.remote_file(
     name = "robolectric-shadows-binary-remote.jar",
     sha1 = "39d7a856bf91640b1a6d044333336a2b3f3c198f",
     url = "https://repo1.maven.org/maven2/org/robolectric/shadows-core/3.0/shadows-core-3.0-16.jar",
diff --git a/ReactAndroid/src/main/third-party/java/sqlite/BUCK b/ReactAndroid/src/main/third-party/java/sqlite/BUCK
index a739fae9f85a05..7fd47e8a19d975 100644
--- a/ReactAndroid/src/main/third-party/java/sqlite/BUCK
+++ b/ReactAndroid/src/main/third-party/java/sqlite/BUCK
@@ -1,4 +1,5 @@
-load("//ReactNative:DEFS.bzl", "rn_android_library", "rn_prebuilt_jar")
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_android_library", "rn_prebuilt_jar")
 
 rn_android_library(
     name = "sqlite",
@@ -14,7 +15,7 @@ rn_prebuilt_jar(
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "download-sqlite4java.jar",
     sha1 = "745a7e2f35fdbe6336922e0d492c979dbbfa74fb",
     url = "mvn:com.almworks.sqlite4java:sqlite4java:jar:0.282",
diff --git a/ReactAndroid/src/main/third-party/java/testing-support-lib/BUCK b/ReactAndroid/src/main/third-party/java/testing-support-lib/BUCK
index 9b9ec7008d9b5a..9ef85775609c06 100644
--- a/ReactAndroid/src/main/third-party/java/testing-support-lib/BUCK
+++ b/ReactAndroid/src/main/third-party/java/testing-support-lib/BUCK
@@ -1,22 +1,24 @@
-android_prebuilt_aar(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.android_prebuilt_aar(
     name = "runner",
     aar = ":testing-support-lib-runner-download",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "testing-support-lib-runner-download",
     sha1 = "a31e7e8db98ca19fb3fab23f120d19a6f4e3e8a9",
     url = "mvn:com.android.support.test:runner:aar:0.3",
 )
 
-android_prebuilt_aar(
+fb_native.android_prebuilt_aar(
     name = "exposed-instrumentation-api",
     aar = ":testing-support-instrumentation",
     visibility = ["//ReactAndroid/..."],
 )
 
-remote_file(
+fb_native.remote_file(
     name = "testing-support-instrumentation",
     sha1 = "a7161eafdfbd02a39461f076c9dce0c8e5e7a149",
     url = "mvn:com.android.support.test:exposed-instrumentation-api-publish:aar:0.3",
diff --git a/ReactAndroid/src/test/java/com/facebook/common/logging/BUCK b/ReactAndroid/src/test/java/com/facebook/common/logging/BUCK
index 4fd90a102b3720..eec98c1de7106d 100644
--- a/ReactAndroid/src/test/java/com/facebook/common/logging/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/common/logging/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "logging",
diff --git a/ReactAndroid/src/test/java/com/facebook/common/logging/FakeLoggingDelegate.java b/ReactAndroid/src/test/java/com/facebook/common/logging/FakeLoggingDelegate.java
index baf9b9913b8bc8..3e944404b7e034 100644
--- a/ReactAndroid/src/test/java/com/facebook/common/logging/FakeLoggingDelegate.java
+++ b/ReactAndroid/src/test/java/com/facebook/common/logging/FakeLoggingDelegate.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/BUCK b/ReactAndroid/src/test/java/com/facebook/react/BUCK
index 3551cdbeb10804..3eecaae58b7f51 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "react",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/CompositeReactPackageTest.java b/ReactAndroid/src/test/java/com/facebook/react/CompositeReactPackageTest.java
index f12b8b178c168e..643d003e5175be 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/CompositeReactPackageTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/CompositeReactPackageTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/RootViewTest.java b/ReactAndroid/src/test/java/com/facebook/react/RootViewTest.java
index d706b9c79e647d..9debe317bb8c18 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/RootViewTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/RootViewTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/animated/BUCK b/ReactAndroid/src/test/java/com/facebook/react/animated/BUCK
index 4849a1659049ba..76d35a6ce1c914 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/animated/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/animated/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "animated",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java
index 27973a3acea1bf..a43308b7d41661 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedInterpolationTest.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.animated;
 
 import org.junit.Test;
diff --git a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
index 3c31cb1cf00c12..6e12db5c4153f4 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/animated/NativeAnimatedNodeTraversalTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/BUCK b/ReactAndroid/src/test/java/com/facebook/react/bridge/BUCK
index 7a5779042234d9..62f5bd2dfa08e3 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_android_library", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_android_library", "rn_robolectric_test")
 
 STANDARD_TEST_SRCS = [
     "*Test.java",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/BaseJavaModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/BaseJavaModuleTest.java
index 215b5277150239..e48e7b20b37199 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/BaseJavaModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/BaseJavaModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -41,7 +41,7 @@ public class BaseJavaModuleTest {
   @Before
   public void setup() {
     ModuleHolder moduleHolder = new ModuleHolder(new MethodsModule());
-    mWrapper = new JavaModuleWrapper(null, MethodsModule.class.getName(), moduleHolder);
+    mWrapper = new JavaModuleWrapper(null, moduleHolder);
     mMethods = mWrapper.getMethodDescriptors();
     PowerMockito.mockStatic(SoLoader.class);
     mArguments = PowerMockito.mock(ReadableNativeArray.class);
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/FallbackJSBundleLoaderTest.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/FallbackJSBundleLoaderTest.java
index 6b0a18177a1740..1fa1e4aa455db6 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/FallbackJSBundleLoaderTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/FallbackJSBundleLoaderTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/InstanceHandleHelper.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/InstanceHandleHelper.java
index bb47fd0dac3213..836ac568041842 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/InstanceHandleHelper.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/InstanceHandleHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/JavaOnlyArrayTest.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/JavaOnlyArrayTest.java
index d2d95b197ae412..571b96900c1128 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/JavaOnlyArrayTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/JavaOnlyArrayTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/JsonWriterTest.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/JsonWriterTest.java
index 353d743587d333..262c187b7e42de 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/JsonWriterTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/JsonWriterTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/ModuleSpecTest.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/ModuleSpecTest.java
deleted file mode 100644
index 4f01b2070ae051..00000000000000
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/ModuleSpecTest.java
+++ /dev/null
@@ -1,104 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.bridge;
-
-import com.facebook.react.common.build.ReactBuildConfig;
-
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.powermock.core.classloader.annotations.PowerMockIgnore;
-import org.powermock.core.classloader.annotations.PrepareForTest;
-import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor;
-import org.powermock.modules.junit4.rule.PowerMockRule;
-import org.powermock.reflect.Whitebox;
-import org.robolectric.RobolectricTestRunner;
-
-import static org.fest.assertions.api.Assertions.assertThat;
-import static org.mockito.Mockito.mock;
-
-@PowerMockIgnore({"org.mockito.*", "org.robolectric.*", "android.*"})
-@SuppressStaticInitializationFor("com.facebook.react.common.build.ReactBuildConfig")
-@PrepareForTest({ReactBuildConfig.class})
-@RunWith(RobolectricTestRunner.class)
-public class ModuleSpecTest {
-  @Rule
-  public PowerMockRule rule = new PowerMockRule();
-
-  @Test(expected = IllegalArgumentException.class)
-  public void testSimpleFailFast() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", true);
-    ModuleSpec.simple(ComplexModule.class, mock(ReactApplicationContext.class));
-  }
-
-  @Test(expected = IllegalArgumentException.class)
-  public void testSimpleFailFastDefault() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", true);
-    ModuleSpec.simple(ComplexModule.class);
-  }
-
-  @Test
-  public void testSimpleNoFailFastRelease() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", false);
-    ModuleSpec.simple(ComplexModule.class, mock(ReactApplicationContext.class));
-  }
-
-  @Test(expected = RuntimeException.class)
-  public void testSimpleFailLateRelease() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", false);
-    ModuleSpec spec = ModuleSpec.simple(ComplexModule.class, mock(ReactApplicationContext.class));
-    spec.getProvider().get();
-  }
-
-  @Test
-  public void testSimpleDefaultConstructor() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", true);
-    ModuleSpec spec = ModuleSpec.simple(SimpleModule.class);
-    assertThat(spec.getProvider().get()).isInstanceOf(SimpleModule.class);
-  }
-
-  @Test
-  public void testSimpleContextConstructor() {
-    Whitebox.setInternalState(ReactBuildConfig.class, "DEBUG", true);
-    ReactApplicationContext context = mock(ReactApplicationContext.class);
-    ModuleSpec spec = ModuleSpec.simple(SimpleContextModule.class, context);
-
-    NativeModule module = spec.getProvider().get();
-    assertThat(module).isInstanceOf(SimpleContextModule.class);
-    SimpleContextModule contextModule = (SimpleContextModule) module;
-    assertThat(contextModule.getReactApplicationContext()).isSameAs(context);
-  }
-
-  public static class ComplexModule extends BaseJavaModule {
-
-    public ComplexModule(int a, int b) {
-    }
-
-    public String getName() {
-      return "ComplexModule";
-    }
-  }
-
-  public static class SimpleModule extends BaseJavaModule {
-
-    public String getName() {
-      return "SimpleModule";
-    }
-  }
-
-  public static class SimpleContextModule extends ReactContextBaseJavaModule {
-
-    public SimpleContextModule(ReactApplicationContext context) {
-      super(context);
-    }
-
-    public String getName() {
-      return "SimpleContextModule";
-    }
-  }
-}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/bridge/ReactTestHelper.java b/ReactAndroid/src/test/java/com/facebook/react/bridge/ReactTestHelper.java
index e35d7ea8f583a3..7722823038d921 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/bridge/ReactTestHelper.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/bridge/ReactTestHelper.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/devsupport/BUCK b/ReactAndroid/src/test/java/com/facebook/react/devsupport/BUCK
index 0b3fd967a29102..2bf74a64315a33 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/devsupport/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/devsupport/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "devsupport",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/devsupport/JSDebuggerWebSocketClientTest.java b/ReactAndroid/src/test/java/com/facebook/react/devsupport/JSDebuggerWebSocketClientTest.java
index 4763eabbed21a4..3b4a8a209baa82 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/devsupport/JSDebuggerWebSocketClientTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/devsupport/JSDebuggerWebSocketClientTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/devsupport/MultipartStreamReaderTest.java b/ReactAndroid/src/test/java/com/facebook/react/devsupport/MultipartStreamReaderTest.java
index 04a947a346403e..311819523fe44e 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/devsupport/MultipartStreamReaderTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/devsupport/MultipartStreamReaderTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/devsupport/StackTraceHelperTest.java b/ReactAndroid/src/test/java/com/facebook/react/devsupport/StackTraceHelperTest.java
index 70b64184bcb504..9fc112b28791ad 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/devsupport/StackTraceHelperTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/devsupport/StackTraceHelperTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/fabric/BUCK b/ReactAndroid/src/test/java/com/facebook/react/fabric/BUCK
deleted file mode 100644
index 688ffe6726ae9d..00000000000000
--- a/ReactAndroid/src/test/java/com/facebook/react/fabric/BUCK
+++ /dev/null
@@ -1,40 +0,0 @@
-load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
-
-rn_robolectric_test(
-    name = "fabric",
-    srcs = glob(["**/*.java"]),
-    contacts = ["oncall+fbandroid_sheriff@xmail.facebook.com"],
-    resources = glob([
-        "**/*.txt",
-        "**/*.json",
-    ]),
-    visibility = [
-        "PUBLIC",
-    ],
-    deps = [
-        "xplat//yoga/java:java",
-        react_native_dep("third-party/java/assertj:assertj-core"),
-        react_native_dep("third-party/java/fest:fest"),
-        react_native_dep("third-party/java/fest:fest_android"),
-        react_native_dep("third-party/java/guava:guava"),
-        react_native_dep("third-party/java/jackson:jackson"),
-        react_native_dep("third-party/java/jsr-305:jsr-305"),
-        react_native_dep("third-party/java/jsr-330:jsr-330"),
-        react_native_dep("third-party/java/junit:junit"),
-        react_native_dep("third-party/java/mockito:mockito"),
-        react_native_dep("third-party/java/robolectric3/robolectric:robolectric"),
-        react_native_dep("libraries/fbcore/src/test/java/com/facebook/powermock:powermock"),
-        react_native_dep("libraries/soloader/java/com/facebook/soloader:soloader"),
-        react_native_dep("third-party/android/support/v4:lib-support-v4"),
-        react_native_target("java/com/facebook/react:react"),
-        react_native_target("java/com/facebook/react/bridge:bridge"),
-        react_native_target("java/com/facebook/react/common:common"),
-        react_native_target("java/com/facebook/react/fabric:fabric"),
-        react_native_target("java/com/facebook/react/modules/core:core"),
-        react_native_target("java/com/facebook/react/uimanager:uimanager"),
-        react_native_target("java/com/facebook/react/views/text:text"),
-        react_native_target("java/com/facebook/react/views/view:view"),
-        react_native_target("java/com/facebook/react/views/progressbar:progressbar"),
-        react_native_tests_target("java/com/facebook/react/bridge:testhelpers"),
-    ],
-) if not IS_OSS_BUILD else None
diff --git a/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricReconcilerTest.java b/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricReconcilerTest.java
deleted file mode 100644
index b627df9af6bcd9..00000000000000
--- a/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricReconcilerTest.java
+++ /dev/null
@@ -1,205 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-package com.facebook.react.fabric;
-
-import static org.fest.assertions.api.Assertions.assertThat;
-import static org.mockito.Mockito.mock;
-
-import com.facebook.react.bridge.CatalystInstance;
-import com.facebook.react.bridge.JavaScriptContextHolder;
-import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReactTestHelper;
-import com.facebook.react.uimanager.events.EventDispatcher;
-import com.facebook.react.uimanager.NativeViewHierarchyManager;
-import com.facebook.react.uimanager.ReactShadowNode;
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
-import com.facebook.react.uimanager.ThemedReactContext;
-import com.facebook.react.uimanager.UIViewOperationQueue;
-import com.facebook.react.uimanager.ViewAtIndex;
-import com.facebook.react.uimanager.ViewManager;
-import com.facebook.react.uimanager.ViewManagerRegistry;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-/** Tests {@link FabricReconciler} */
-@RunWith(RobolectricTestRunner.class)
-public class FabricReconcilerTest {
-
-  private FabricReconciler mFabricReconciler;
-  private FabricUIManager mFabricUIManager;
-  private MockUIViewOperationQueue mMockUIViewOperationQueue;
-
-  @Before
-  public void setUp() {
-    CatalystInstance catalystInstance = ReactTestHelper.createMockCatalystInstance();
-    ReactApplicationContext reactContext =
-        new ReactApplicationContext(RuntimeEnvironment.application);
-    reactContext.initializeWithInstance(catalystInstance);
-    List<ViewManager> viewManagers = new ArrayList<>();
-    ViewManagerRegistry viewManagerRegistry = new ViewManagerRegistry(viewManagers);
-    JavaScriptContextHolder jsContext = mock(JavaScriptContextHolder.class);
-    EventDispatcher eventDispatcher = mock(EventDispatcher.class);
-    mFabricUIManager = new FabricUIManager(reactContext, viewManagerRegistry, jsContext, eventDispatcher);
-    mMockUIViewOperationQueue = new MockUIViewOperationQueue(reactContext);
-    mFabricReconciler = new FabricReconciler(mMockUIViewOperationQueue);
-  }
-
-  @Test
-  public void testSimpleHierarchy() {
-    ReactShadowNode parent = createNode(0);
-    ReactShadowNode child1 = createNode(1);
-    ReactShadowNode child2 = createNode(2);
-    addChildren(parent, child1, child2);
-
-    ReactShadowNode parentCloned = createNode(0);
-    ReactShadowNode child3 = createNode(3);
-    addChildren(parentCloned, child3, child2);
-
-    mFabricReconciler.manageChildren(parent, parentCloned);
-
-    List<ManageChildrenOperation> expectedOperations = new ArrayList<>();
-    expectedOperations.add(
-        new ManageChildrenOperation(
-            0,
-            new int[] {0, 1},
-            new ViewAtIndex[] {new ViewAtIndex(3, 0), new ViewAtIndex(2, 1)},
-            new int[] {1}));
-    assertThat(mMockUIViewOperationQueue.getOperations()).isEqualTo(expectedOperations);
-  }
-
-  @Test
-  public void testVirtualNodes() {
-    ReactShadowNode parent = createNode(0);
-    ReactShadowNode child1 = createVirtualNode(1);
-    ReactShadowNode child2 = createVirtualNode(2);
-    ReactShadowNode child3 = createVirtualNode(3);
-    addChildren(parent, child1, child2, child3);
-
-    ReactShadowNode parentCloned = createNode(0);
-    ReactShadowNode child4 = createVirtualNode(4);
-    addChildren(parentCloned, child1, child4, child3);
-
-    mFabricReconciler.manageChildren(parent, parentCloned);
-
-    List<ManageChildrenOperation> expectedOperations = new ArrayList<>();
-    assertThat(mMockUIViewOperationQueue.getOperations()).isEqualTo(expectedOperations);
-  }
-
-  private void addChildren(ReactShadowNode parent, ReactShadowNode... children) {
-    for (ReactShadowNode child : children) {
-      mFabricUIManager.appendChild(parent, child);
-    }
-  }
-
-  private static ReactShadowNode createNode(int tag) {
-    return createNode(tag, false);
-  }
-
-  private static ReactShadowNode createVirtualNode(int tag) {
-    return createNode(tag, true);
-  }
-
-  private static ReactShadowNode createNode(int tag, boolean virtual) {
-    ReactShadowNode node;
-    if (virtual) {
-      node = new VirtualReactShadowNode();
-    } else {
-      node = new ReactShadowNodeImpl();
-    }
-    node.setReactTag(tag);
-    node.setViewClassName("View");
-    node.setThemedContext(mock(ThemedReactContext.class));
-    return node;
-  }
-
-  private static class VirtualReactShadowNode extends ReactShadowNodeImpl {
-
-    VirtualReactShadowNode() {}
-
-    VirtualReactShadowNode(VirtualReactShadowNode original) {
-      super(original);
-    }
-
-    @Override
-    public boolean isVirtual() {
-      return true;
-    }
-
-    @Override
-    public ReactShadowNodeImpl copy() {
-      return new VirtualReactShadowNode(this);
-    }
-  }
-
-  private static class ManageChildrenOperation {
-    private int mTag;
-    private int[] mIndicesToRemove;
-    private ViewAtIndex[] mViewsToAdd;
-    private int[] mTagsToRemove;
-
-    private ManageChildrenOperation(
-        int tag, int[] indicesToRemove, ViewAtIndex[] viewsToAdd, int[] tagsToRemove) {
-      mTag = tag;
-      mIndicesToRemove = indicesToRemove;
-      mViewsToAdd = viewsToAdd;
-      mTagsToRemove = tagsToRemove;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-      if (obj == null || obj.getClass() != getClass()) {
-        return false;
-      }
-      ManageChildrenOperation op = (ManageChildrenOperation) obj;
-      return mTag == op.mTag
-          && Arrays.equals(mIndicesToRemove, op.mIndicesToRemove)
-          && Arrays.equals(mViewsToAdd, op.mViewsToAdd)
-          && Arrays.equals(mTagsToRemove, op.mTagsToRemove);
-    }
-
-    @Override
-    public int hashCode() {
-      return Arrays.deepHashCode(new Object[] {mTag, mIndicesToRemove, mViewsToAdd, mTagsToRemove});
-    }
-
-    @Override
-    public String toString() {
-      return "ManageChildrenOperation \n\tindicesToRemove: "
-          + Arrays.toString(mIndicesToRemove)
-          + "\n\tviewsToAdd: "
-          + Arrays.toString(mViewsToAdd)
-          + "\n\ttagsToRemove: "
-          + Arrays.toString(mTagsToRemove);
-    }
-  }
-
-  private static class MockUIViewOperationQueue extends UIViewOperationQueue {
-
-    private List<ManageChildrenOperation> mOperations;
-
-    private MockUIViewOperationQueue(ReactApplicationContext context) {
-      super(context, mock(NativeViewHierarchyManager.class), 0);
-      mOperations = new ArrayList<>();
-    }
-
-    @Override
-    public void enqueueManageChildren(
-        int reactTag, int[] indicesToRemove, ViewAtIndex[] viewsToAdd, int[] tagsToDelete) {
-      mOperations.add(
-          new ManageChildrenOperation(reactTag, indicesToRemove, viewsToAdd, tagsToDelete));
-    }
-
-    public List<ManageChildrenOperation> getOperations() {
-      return Collections.unmodifiableList(mOperations);
-    }
-  }
-}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricUIManagerTest.java b/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricUIManagerTest.java
deleted file mode 100644
index 93f601c5ffafbe..00000000000000
--- a/ReactAndroid/src/test/java/com/facebook/react/fabric/FabricUIManagerTest.java
+++ /dev/null
@@ -1,336 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-package com.facebook.react.fabric;
-
-import static org.fest.assertions.api.Assertions.assertThat;
-import static com.facebook.react.bridge.InstanceHandleHelper.randomInstanceHandle;
-import static org.mockito.Mockito.mock;
-
-import com.facebook.react.ReactRootView;
-import com.facebook.react.bridge.JavaScriptContextHolder;
-import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.ReactTestHelper;
-import com.facebook.react.bridge.ReadableNativeMap;
-import com.facebook.react.uimanager.events.EventDispatcher;
-import com.facebook.react.uimanager.ReactShadowNode;
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
-import com.facebook.react.uimanager.Spacing;
-import com.facebook.react.uimanager.ThemedReactContext;
-import com.facebook.react.uimanager.ViewManager;
-import com.facebook.react.uimanager.ViewManagerRegistry;
-import com.facebook.react.views.progressbar.ProgressBarShadowNode;
-import com.facebook.react.views.text.ReactRawTextManager;
-import com.facebook.react.views.text.ReactRawTextShadowNode;
-import com.facebook.react.views.text.ReactTextViewManager;
-import com.facebook.react.views.view.ReactViewManager;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import org.fest.assertions.data.Offset;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-
-/** Tests {@link FabricUIManager} */
-@RunWith(RobolectricTestRunner.class)
-public class FabricUIManagerTest {
-
-  private FabricUIManager mFabricUIManager;
-  private ThemedReactContext mThemedReactContext;
-  private int mNextReactTag;
-
-  @Before
-  public void setUp() throws Exception {
-    mNextReactTag = 2;
-    ReactApplicationContext reactContext = new ReactApplicationContext(RuntimeEnvironment.application);
-    reactContext.initializeWithInstance(ReactTestHelper.createMockCatalystInstance());
-    mThemedReactContext = new ThemedReactContext(reactContext, reactContext);
-
-    List<ViewManager> viewManagers =
-        Arrays.<ViewManager>asList(
-            new ReactViewManager(), new ReactTextViewManager(), new ReactRawTextManager());
-    ViewManagerRegistry viewManagerRegistry = new ViewManagerRegistry(viewManagers);
-    JavaScriptContextHolder jsContext = mock(JavaScriptContextHolder.class);
-    EventDispatcher eventDispatcher = mock(EventDispatcher.class);
-    mFabricUIManager = new FabricUIManager(reactContext, viewManagerRegistry, jsContext, eventDispatcher);
-  }
-
-  @Test
-  public void testCreateNode() {
-    ReactRootView rootView =
-        new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    int reactTag = mNextReactTag++;
-    String viewClass = ReactViewManager.REACT_CLASS;
-    ReactShadowNode node =
-        mFabricUIManager.createNode(reactTag, viewClass, rootTag, null, randomInstanceHandle());
-
-    assertThat(reactTag).isEqualTo(node.getReactTag());
-    assertThat(viewClass).isEqualTo(node.getViewClass());
-    assertThat(rootTag).isEqualTo(rootTag);
-  }
-
-  @Test
-  public void testCreateMultpleRootViews() {
-    createAndRenderRootView();
-    createAndRenderRootView();
-  }
-
-  private int createAndRenderRootView() {
-    ReactRootView rootView =
-        new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    int reactTag = mNextReactTag++;
-    String viewClass = ReactViewManager.REACT_CLASS;
-    ReactShadowNode node =
-        mFabricUIManager.createNode(reactTag, viewClass, rootTag, null, randomInstanceHandle());
-
-    List<ReactShadowNode> childSet = mFabricUIManager.createChildSet(rootTag);
-    mFabricUIManager.appendChildToSet(childSet, node);
-    mFabricUIManager.completeRoot(rootTag, childSet);
-
-    return rootTag;
-  }
-
-  @Test
-  public void testCloneNode() {
-    ReactShadowNode node = createViewNode();
-    ReactShadowNode child = createViewNode();
-    node.addChildAt(child, 0);
-
-    ReactShadowNode clonedNode = mFabricUIManager.cloneNode(node);
-
-    assertThat(clonedNode).isNotSameAs(node);
-    assertThat(clonedNode.getOriginalReactShadowNode()).isSameAs(node);
-    assertSameFields(clonedNode, node);
-    assertSameChildren(clonedNode, node);
-    assertThat(clonedNode.getChildAt(0)).isEqualTo(child);
-  }
-
-  @Test
-  public void testDefaultSpacingCloning() {
-    ReactShadowNode node = createViewNode();
-    node.setDefaultPadding(Spacing.LEFT, 10);
-
-    ReactShadowNode clonedNode = mFabricUIManager.cloneNode(node);
-
-    node.setDefaultPadding(Spacing.LEFT, 20);
-    assertThat(clonedNode.getStylePadding(Spacing.LEFT).value).isEqualTo(10f, Offset.offset(0.01f));
-    assertThat(node.getStylePadding(Spacing.LEFT).value).isEqualTo(20f, Offset.offset(0.01f));
-  }
-
-  @Test
-  public void testCloneVirtualNode() {
-    ReactRawTextShadowNode node = new ReactRawTextShadowNode();
-    node.setText("test");
-    assertThat(node.isVirtual()).isTrue();
-
-    ReactRawTextShadowNode clonedNode = (ReactRawTextShadowNode) node.mutableCopy(randomInstanceHandle());
-
-    assertThat(clonedNode.getText()).isEqualTo("test");
-    assertThat(clonedNode).isNotEqualTo(node);
-  }
-
-  @Test
-  public void testLayoutProgressBarAfterClonning() {
-    ProgressBarShadowNode node = new ProgressBarShadowNode();
-    node.setThemedContext(mThemedReactContext);
-    ProgressBarShadowNode clone = (ProgressBarShadowNode) node.mutableCopy(randomInstanceHandle());
-    clone.calculateLayout();
-  }
-
-  @Test
-  public void testCloneNodeWithNewChildren() {
-    ReactShadowNode node = createViewNode();
-    ReactShadowNode child = createViewNode();
-    node.addChildAt(child, 0);
-
-    ReactShadowNode clonedNode = mFabricUIManager.cloneNodeWithNewChildren(node);
-
-    assertThat(clonedNode.getChildCount()).isZero();
-    assertSameFields(clonedNode, node);
-  }
-
-  @Test
-  public void testCloneNodeWithNewProps() {
-    ReactShadowNode node = createViewNode();
-    ReadableNativeMap props = null; // TODO(ayc): Figure out how to create a Native map from tests.
-
-    ReactShadowNode clonedNode = mFabricUIManager.cloneNodeWithNewProps(node, props);
-  }
-
-  @Test
-  public void testCloneNodeWithNewChildrenAndProps() {
-    ReactShadowNode node = createViewNode();
-    ReadableNativeMap props = null;
-
-    ReactShadowNode clonedNode = mFabricUIManager.cloneNodeWithNewChildrenAndProps(node, props);
-
-    assertThat(clonedNode.getChildCount()).isZero();
-  }
-
-  @Test
-  public void testAppendChild() {
-    ReactShadowNode node = createViewNode();
-    ReactShadowNode child = createViewNode();
-
-    mFabricUIManager.appendChild(node, child);
-
-    assertThat(node.getChildCount()).isEqualTo(1);
-    assertThat(node.getChildAt(0)).isEqualTo(child);
-  }
-
-  @Test
-  public void testCreateChildSet() {
-    List<ReactShadowNode> childSet = mFabricUIManager.createChildSet(0);
-
-    assertThat(childSet).isEmpty();
-  }
-
-  @Test
-  public void testAppendChildToSet() {
-    ReactShadowNode node = createViewNode();
-    List<ReactShadowNode> childSet = mFabricUIManager.createChildSet(0);
-
-    mFabricUIManager.appendChildToSet(childSet, node);
-
-    assertThat(childSet).hasSize(1);
-    assertThat(childSet).contains(node);
-  }
-
-  @Test(expected = AssertionError.class)
-  public void testCompleteRootBeforeAddRoot() {
-    mFabricUIManager.completeRoot(0, new ArrayList<ReactShadowNode>());
-  }
-
-  @Test
-  public void testCompleteRoot() {
-    ReactRootView rootView =
-        new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    List<ReactShadowNode> children = mFabricUIManager.createChildSet(rootTag);
-
-    mFabricUIManager.completeRoot(rootTag, children);
-  }
-
-  @Test
-  public void testSealReactShadowNode() {
-    ReactRootView rootView =
-      new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    String viewClass = ReactViewManager.REACT_CLASS;
-
-    ReactShadowNode container = mFabricUIManager.createNode(6, viewClass, rootTag, null, randomInstanceHandle());
-    List<ReactShadowNode> childSet = mFabricUIManager.createChildSet(rootTag);
-    mFabricUIManager.appendChildToSet(childSet, container);
-
-    assertThat(container.isSealed()).isFalse();
-
-    mFabricUIManager.completeRoot(rootTag, childSet);
-
-    assertThat(container.isSealed()).isTrue();
-  }
-
-  /**
-   * Tests that cloned text nodes will not share measure functions
-   */
-  @Test
-  public void testTextMutableClone() {
-    ReactRootView rootView =
-        new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    ReactShadowNode text =
-        mFabricUIManager.createNode(0, ReactTextViewManager.REACT_CLASS, rootTag, null, randomInstanceHandle());
-    assertThat(text.isMeasureDefined()).isTrue();
-
-    ReactShadowNode textCopy = text.mutableCopy(randomInstanceHandle());
-    assertThat(textCopy.isMeasureDefined()).isTrue();
-
-    textCopy.setStyleWidth(200);
-    text.onBeforeLayout();
-    text.calculateLayout();
-    textCopy.onBeforeLayout();
-    textCopy.calculateLayout();
-
-    assertThat(text.getLayoutWidth()).isNotEqualTo(textCopy.getLayoutWidth());
-  }
-
-  /**
-   * Verifies that the reconciliation phase will always set the originalNode field of every node in
-   * the tree to null once completeRoot has finished to prevent memory leaks.
-   */
-  @Test
-  public void testRemoveOriginalNodeReferences() {
-    ReactRootView rootView =
-        new ReactRootView(RuntimeEnvironment.application.getApplicationContext());
-    int rootTag = mFabricUIManager.addRootView(rootView);
-    String viewClass = ReactViewManager.REACT_CLASS;
-
-    ReactShadowNode aa = mFabricUIManager.createNode(2, viewClass, rootTag, null, randomInstanceHandle());
-    ReactShadowNode a = mFabricUIManager.createNode(3, viewClass, rootTag, null, randomInstanceHandle());
-    mFabricUIManager.appendChild(a, aa);
-    ReactShadowNode bb = mFabricUIManager.createNode(4, viewClass, rootTag, null, randomInstanceHandle());
-    ReactShadowNode b = mFabricUIManager.createNode(5, viewClass, rootTag, null, randomInstanceHandle());
-    mFabricUIManager.appendChild(b, bb);
-    ReactShadowNode container = mFabricUIManager.createNode(6, viewClass, rootTag, null, randomInstanceHandle());
-    mFabricUIManager.appendChild(container, a);
-    mFabricUIManager.appendChild(container, b);
-    List<ReactShadowNode> childSet = mFabricUIManager.createChildSet(rootTag);
-    mFabricUIManager.appendChildToSet(childSet, container);
-    mFabricUIManager.completeRoot(rootTag, childSet);
-
-    ReactShadowNode aaClone = mFabricUIManager.cloneNodeWithNewProps(aa, null);
-    ReactShadowNode aClone = mFabricUIManager.cloneNodeWithNewChildren(a);
-    mFabricUIManager.appendChild(aClone, aaClone);
-    ReactShadowNode containerClone = mFabricUIManager.cloneNodeWithNewChildren(container);
-    mFabricUIManager.appendChild(containerClone, b);
-    mFabricUIManager.appendChild(containerClone, aClone);
-    List<ReactShadowNode> childSet2 = mFabricUIManager.createChildSet(rootTag);
-    mFabricUIManager.appendChildToSet(childSet2, containerClone);
-    mFabricUIManager.completeRoot(rootTag, childSet2);
-
-    ReactShadowNode[] nodes =
-        new ReactShadowNode[] {aa, a, bb, b, container, aaClone, aClone, containerClone};
-
-    for (ReactShadowNode node : nodes) {
-      assertThat(node.getOriginalReactShadowNode()).isNull();
-    }
-  }
-
-  private void assertSameChildren(ReactShadowNode node1, ReactShadowNode node2) {
-    assertThat(node1.getChildCount()).isEqualTo(node2.getChildCount());
-    for (int i = 0; i < node1.getChildCount(); i++) {
-      assertThat(node1.getChildAt(i)).isEqualTo(node2.getChildAt(i));
-    }
-  }
-
-  private void assertSameFields(ReactShadowNode node1, ReactShadowNode node2) {
-    assertThat(node1.getReactTag()).isEqualTo(node2.getReactTag());
-    assertThat(node1.getViewClass()).isEqualTo(node2.getViewClass());
-    assertThat(node2.getParent()).isNull();
-    assertThat(node1.getThemedContext()).isEqualTo(node2.getThemedContext());
-    assertThat(node1.isVirtual()).isEqualTo(node2.isVirtual());
-    assertThat(node1.getLayoutDirection()).isEqualTo(node2.getLayoutDirection());
-    assertThat(node1.getLayoutHeight()).isEqualTo(node2.getLayoutHeight());
-    assertThat(node1.getLayoutWidth()).isEqualTo(node2.getLayoutWidth());
-    assertThat(node1.getLayoutX()).isEqualTo(node2.getLayoutX());
-    assertThat(node1.getLayoutY()).isEqualTo(node2.getLayoutY());
-    for (int spacingType = Spacing.LEFT; spacingType <= Spacing.ALL; spacingType++) {
-      assertThat(node1.getStylePadding(spacingType)).isEqualTo(node2.getStylePadding(spacingType));
-    }
-    assertThat(node1.getStyleWidth()).isEqualTo(node2.getStyleWidth());
-    assertThat(node1.getStyleHeight()).isEqualTo(node2.getStyleHeight());
-  }
-
-  private ReactShadowNode createViewNode() {
-    ReactShadowNode node = new ReactShadowNodeImpl();
-    node.setViewClassName(ReactViewManager.REACT_CLASS);
-    node.setThemedContext(mThemedReactContext);
-    return node;
-  }
-}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/fabric/ReactShadowNodeTest.java b/ReactAndroid/src/test/java/com/facebook/react/fabric/ReactShadowNodeTest.java
deleted file mode 100644
index 68881c7f445323..00000000000000
--- a/ReactAndroid/src/test/java/com/facebook/react/fabric/ReactShadowNodeTest.java
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-package com.facebook.react.fabric;
-
-import com.facebook.react.uimanager.ReactShadowNodeImpl;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-
-/** Tests {@link ReactShadowNode} */
-@RunWith(RobolectricTestRunner.class)
-public class ReactShadowNodeTest {
-
-  @Test(expected = AssertionError.class)
-  public void testClonedInstance() {
-    TestReactShadowNode node = new TestReactShadowNode();
-    node.mutableCopy(node.getInstanceHandle());
-  }
-
-  private static class TestReactShadowNode extends ReactShadowNodeImpl {}
-}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/BUCK b/ReactAndroid/src/test/java/com/facebook/react/modules/BUCK
index e894c42db496c9..2206284f930891 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "modules",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/blob/BlobModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/blob/BlobModuleTest.java
index 67283dc0e6e8b7..6aeac0445c7a5b 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/blob/BlobModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/blob/BlobModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/camera/ImageStoreManagerTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/camera/ImageStoreManagerTest.java
index 1ed67fb9434acb..c220c6c7638dab 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/camera/ImageStoreManagerTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/camera/ImageStoreManagerTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/clipboard/ClipboardModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/clipboard/ClipboardModuleTest.java
index a0d93c4db3bd3e..aa8fc484ff90c7 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/clipboard/ClipboardModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/clipboard/ClipboardModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/dialog/DialogModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/dialog/DialogModuleTest.java
index 847c71954a75bb..d551959eed502c 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/dialog/DialogModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/dialog/DialogModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/network/NetworkingModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/network/NetworkingModuleTest.java
index 456a108f346922..39a5cf76533be7 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/network/NetworkingModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/network/NetworkingModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/network/ProgressiveStringDecoderTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/network/ProgressiveStringDecoderTest.java
index 09b2365513ec54..9b387cd60ec1b2 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/network/ProgressiveStringDecoderTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/network/ProgressiveStringDecoderTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/network/ReactCookieJarContainerTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/network/ReactCookieJarContainerTest.java
index b08e514e853d37..fc160f006c40bb 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/network/ReactCookieJarContainerTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/network/ReactCookieJarContainerTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/share/ShareModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/share/ShareModuleTest.java
index 86f99cd9dc1928..90484e1591fadd 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/share/ShareModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/share/ShareModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,31 +11,31 @@
 import android.content.Intent;
 
 import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.JavaOnlyMap;
 import com.facebook.react.bridge.Promise;
-import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactTestHelper;
-import com.facebook.react.bridge.JavaOnlyMap;
-
-import javax.annotation.Nullable;
+import com.facebook.react.bridge.WritableMap;
 
 import org.junit.After;
 import org.junit.Before;
-import org.junit.Test;
 import org.junit.Rule;
+import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mockito;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
 import org.powermock.api.mockito.PowerMockito;
-import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.core.classloader.annotations.PowerMockIgnore;
+import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.modules.junit4.rule.PowerMockRule;
-import org.robolectric.internal.ShadowExtractor;
-import org.robolectric.Robolectric;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
+import org.robolectric.internal.ShadowExtractor;
 import org.robolectric.shadows.ShadowApplication;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
@@ -53,12 +53,14 @@ public class ShareModuleTest {
   @Before
   public void prepareModules() throws Exception {
     PowerMockito.mockStatic(Arguments.class);
-    Mockito.when(Arguments.createMap()).thenAnswer(new Answer<Object>() {
-      @Override
-      public Object answer(InvocationOnMock invocation) throws Throwable {
-        return new JavaOnlyMap();
-      }
-    });
+    Mockito
+        .when(Arguments.createMap())
+        .thenAnswer(new Answer<Object>() {
+          @Override
+          public Object answer(InvocationOnMock invocation) throws Throwable {
+            return new JavaOnlyMap();
+          }
+        });
 
     mShareModule = new ShareModule(ReactTestHelper.createCatalystContextForTest());
   }
@@ -83,17 +85,34 @@ public void testShareDialog() {
 
     mShareModule.share(content, dialogTitle, promise);
 
-    final Intent chooserIntent = 
-      ((ShadowApplication)ShadowExtractor.extract(RuntimeEnvironment.application)).getNextStartedActivity();
+    final Intent chooserIntent =
+        ((ShadowApplication) ShadowExtractor.extract(RuntimeEnvironment.application)).getNextStartedActivity();
     assertNotNull("Dialog was not displayed", chooserIntent);
     assertEquals(Intent.ACTION_CHOOSER, chooserIntent.getAction());
-    assertEquals(dialogTitle, chooserIntent.getExtras().get(Intent.EXTRA_TITLE));
-
-    final Intent contentIntent = (Intent)chooserIntent.getExtras().get(Intent.EXTRA_INTENT);
+    assertEquals(
+        dialogTitle,
+        chooserIntent
+            .getExtras()
+            .get(Intent.EXTRA_TITLE)
+    );
+
+    final Intent contentIntent = (Intent) chooserIntent
+        .getExtras()
+        .get(Intent.EXTRA_INTENT);
     assertNotNull("Intent was not built correctly", contentIntent);
     assertEquals(Intent.ACTION_SEND, contentIntent.getAction());
-    assertEquals(title, contentIntent.getExtras().get(Intent.EXTRA_SUBJECT));
-    assertEquals(message, contentIntent.getExtras().get(Intent.EXTRA_TEXT));
+    assertEquals(
+        title,
+        contentIntent
+            .getExtras()
+            .get(Intent.EXTRA_SUBJECT)
+    );
+    assertEquals(
+        message,
+        contentIntent
+            .getExtras()
+            .get(Intent.EXTRA_TEXT)
+    );
 
     assertEquals(1, promise.getResolved());
   }
@@ -111,7 +130,8 @@ public void testInvalidContent() {
   }
 
   final static class SimplePromise implements Promise {
-    private static final String DEFAULT_ERROR = "EUNSPECIFIED";
+    private static final String ERROR_DEFAULT_CODE = "EUNSPECIFIED";
+    private static final String ERROR_DEFAULT_MESSAGE = "Error not specified.";
 
     private int mResolved;
     private int mRejected;
@@ -126,7 +146,7 @@ public int getResolved() {
     public int getRejected() {
       return mRejected;
     }
-    
+
     public Object getValue() {
       return mValue;
     }
@@ -147,31 +167,72 @@ public void resolve(Object value) {
 
     @Override
     public void reject(String code, String message) {
-      reject(code, message, /*Throwable*/null);
+      reject(code, message, /*Throwable*/null, /*WritableMap*/null);
     }
 
     @Override
-    @Deprecated
-    public void reject(String message) {
-      reject(DEFAULT_ERROR, message, /*Throwable*/null);
+    public void reject(String code, Throwable throwable) {
+      reject(code, /*Message*/null, throwable, /*WritableMap*/null);
+    }
+
+    @Override
+    public void reject(String code, String message, Throwable throwable) {
+      reject(code, message, throwable, /*WritableMap*/null);
     }
 
     @Override
-    public void reject(String code, Throwable e) {
-      reject(code, e.getMessage(), e);
+    public void reject(Throwable throwable) {
+      reject(/*Code*/null, /*Message*/null, throwable, /*WritableMap*/null);
     }
 
     @Override
-    public void reject(Throwable e) {
-      reject(DEFAULT_ERROR, e.getMessage(), e);
+    public void reject(Throwable throwable, WritableMap userInfo) {
+      reject(/*Code*/null, /*Message*/null, throwable, userInfo);
     }
 
     @Override
-    public void reject(String code, String message, @Nullable Throwable e) {
+    public void reject(String code, @Nonnull WritableMap userInfo) {
+      reject(code, /*Message*/null, /*Throwable*/null, userInfo);
+    }
+
+    @Override
+    public void reject(String code, Throwable throwable, WritableMap userInfo) {
+      reject(code, /*Message*/null, throwable, userInfo);
+    }
+
+    @Override
+    public void reject(String code, String message, @Nonnull WritableMap userInfo) {
+      reject(code, message, /*Throwable*/null, userInfo);
+    }
+
+    @Override
+    public void reject(
+        String code,
+        String message,
+        @Nullable Throwable throwable,
+        @Nullable WritableMap userInfo
+    ) {
       mRejected++;
-      mErrorCode = code;
-      mErrorMessage = message;
+
+      if (code == null) {
+        mErrorCode = ERROR_DEFAULT_CODE;
+      } else {
+        mErrorCode = code;
+      }
+
+      if (message != null) {
+        mErrorMessage = message;
+      } else if (throwable != null) {
+        mErrorMessage = throwable.getMessage();
+      } else {
+        mErrorMessage = ERROR_DEFAULT_MESSAGE;
+      }
     }
-  }
 
+    @Override
+    @Deprecated
+    public void reject(String message) {
+      reject(/*Code*/null, message, /*Throwable*/null, /*WritableMap*/null);
+    }
+  }
 }
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/storage/AsyncStorageModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/storage/AsyncStorageModuleTest.java
index 559c8669b0629d..8aa09ae99c5a72 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/storage/AsyncStorageModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/storage/AsyncStorageModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/modules/timing/TimingModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/modules/timing/TimingModuleTest.java
index 91c6484846f449..e1c663507dc710 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/modules/timing/TimingModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/modules/timing/TimingModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/BUCK b/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/BUCK
index 686a8ecf6c8016..18dec467c72f2c 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "react_native_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "packagerconnection",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/JSPackagerClientTest.java b/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/JSPackagerClientTest.java
index 6d14bef454fcb3..88f18c00467265 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/JSPackagerClientTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/packagerconnection/JSPackagerClientTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/BUCK b/ReactAndroid/src/test/java/com/facebook/react/uimanager/BUCK
index c51368c734b266..917eef734d1504 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/BUCK
@@ -1,10 +1,11 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "uimanager",
     # TODO Disabled temporarily until Yoga linking is fixed t14964130
     # srcs = glob(['**/*.java']),
     srcs = [
+        "BaseViewManagerTest.java",
         "MatrixMathHelperTest.java",
         "SimpleViewPropertyTest.java",
     ],
@@ -33,6 +34,7 @@ rn_robolectric_test(
         react_native_target("java/com/facebook/react/uimanager/annotations:annotations"),
         react_native_target("java/com/facebook/react/views/text:text"),
         react_native_target("java/com/facebook/react/views/view:view"),
+        react_native_target("res:uimanager"),
         react_native_tests_target("java/com/facebook/react/bridge:testhelpers"),
     ],
 )
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/BaseViewManagerTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/BaseViewManagerTest.java
new file mode 100644
index 00000000000000..33bd58fef800d5
--- /dev/null
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/BaseViewManagerTest.java
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager;
+
+import static org.mockito.Mockito.mock;
+
+import android.content.Context;
+import android.support.v4.view.ViewCompat;
+import com.facebook.react.uimanager.AccessibilityDelegateUtil.AccessibilityRole;
+import com.facebook.react.views.view.ReactViewGroup;
+import com.facebook.react.views.view.ReactViewManager;
+import com.facebook.react.R;
+import java.util.Locale;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.RobolectricTestRunner;
+import static org.fest.assertions.api.Assertions.assertThat;
+
+@RunWith(RobolectricTestRunner.class)
+public class BaseViewManagerTest {
+
+  private BaseViewManager mViewManager;
+  private ReactViewGroup mView;
+
+  @Before
+  public void setUp() {
+    mViewManager = new ReactViewManager();
+    mView = new ReactViewGroup(RuntimeEnvironment.application);
+  }
+
+  @Test
+  public void testAccessibilityRoleNone() {
+    mViewManager.setAccessibilityRole(mView, "none");
+    assertThat(mView.getTag(R.id.accessibility_role)).isEqualTo(AccessibilityRole.NONE);
+  }
+
+  @Test
+  public void testAccessibilityRoleTurkish() {
+    Locale.setDefault(Locale.forLanguageTag("tr-TR"));
+    mViewManager.setAccessibilityRole(mView, "image");
+    assertThat(mView.getTag(R.id.accessibility_role)).isEqualTo(AccessibilityRole.IMAGE);
+  }
+}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/LayoutPropertyApplicatorTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/LayoutPropertyApplicatorTest.java
index 3d78d5cf43140a..48e63ea4e2a1e6 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/LayoutPropertyApplicatorTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/LayoutPropertyApplicatorTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/MatrixMathHelperTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/MatrixMathHelperTest.java
index ac61c012dff76b..5866ca66f8dd7e 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/MatrixMathHelperTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/MatrixMathHelperTest.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.uimanager;
 
 import org.junit.Test;
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterSpecTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterSpecTest.java
index f989f62dd5c1ed..3e6f354e8bce32 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterSpecTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterSpecTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterTest.java
index d06f810e10b931..c3545c386b24f6 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropAnnotationSetterTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropConstantsTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropConstantsTest.java
index 1b84c06d9f0418..5c46a7fcdf5922 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropConstantsTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropConstantsTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSetterTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSetterTest.java
index 799018bfa4600d..2b5701122091a1 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSetterTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSetterTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSpecTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSpecTest.java
index 0120f7a0865106..736c23fc752076 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSpecTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/ReactPropForShadowNodeSpecTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/SimpleViewPropertyTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/SimpleViewPropertyTest.java
index 0b3ac61dfe3317..73d8992037b0b9 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/SimpleViewPropertyTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/SimpleViewPropertyTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleConstantsTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleConstantsTest.java
index 1435875650b0db..a9db7c27b7a9fa 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleConstantsTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleConstantsTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleTest.java
index b38ca784d90114..1922984a4a63ea 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/UIManagerModuleTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/BUCK b/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/BUCK
new file mode 100644
index 00000000000000..6c791141d5435f
--- /dev/null
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/BUCK
@@ -0,0 +1,17 @@
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "rn_robolectric_test")
+
+rn_robolectric_test(
+    name = "layoutanimation",
+    srcs = glob(["**/*.java"]),
+    contacts = ["oncall+react_native@xmail.facebook.com"],
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = [
+        YOGA_TARGET,
+        react_native_dep("third-party/java/fest:fest"),
+        react_native_dep("third-party/java/junit:junit"),
+        react_native_dep("third-party/java/robolectric3/robolectric:robolectric"),
+        react_native_target("java/com/facebook/react/uimanager:uimanager"),
+    ],
+)
diff --git a/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/InterpolatorTypeTest.java b/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/InterpolatorTypeTest.java
new file mode 100644
index 00000000000000..291d1c4facb4a8
--- /dev/null
+++ b/ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/InterpolatorTypeTest.java
@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager.layoutanimation;
+
+import com.facebook.react.uimanager.layoutanimation.InterpolatorType;
+import java.util.Locale;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import static org.fest.assertions.api.Assertions.assertThat;
+
+@RunWith(RobolectricTestRunner.class)
+public class InterpolatorTypeTest {
+
+  @Test
+  public void testCamelCase() {
+    assertThat(InterpolatorType.fromString("linear")).isEqualTo(InterpolatorType.LINEAR);
+    assertThat(InterpolatorType.fromString("easeIn")).isEqualTo(InterpolatorType.EASE_IN);
+    assertThat(InterpolatorType.fromString("easeOut")).isEqualTo(InterpolatorType.EASE_OUT);
+    assertThat(InterpolatorType.fromString("easeInEaseOut")).isEqualTo(InterpolatorType.EASE_IN_EASE_OUT);
+    assertThat(InterpolatorType.fromString("spring")).isEqualTo(InterpolatorType.SPRING);
+  }
+
+  @Test
+  public void testOtherCases() {
+    assertThat(InterpolatorType.fromString("EASEIN")).isEqualTo(InterpolatorType.EASE_IN);
+    assertThat(InterpolatorType.fromString("easeout")).isEqualTo(InterpolatorType.EASE_OUT);
+    assertThat(InterpolatorType.fromString("easeineaseout")).isEqualTo(InterpolatorType.EASE_IN_EASE_OUT);
+  }
+
+  @Test
+  public void testLocales() {
+    Locale.setDefault(Locale.forLanguageTag("tr-TR"));
+    assertThat(InterpolatorType.fromString("easeInEaseOut")).isEqualTo(InterpolatorType.EASE_IN_EASE_OUT);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void testInvalidInterpolatorTypes() throws IllegalArgumentException {
+    InterpolatorType.fromString("ease_in_ease_out");
+  }
+}
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/BUCK b/ReactAndroid/src/test/java/com/facebook/react/views/BUCK
index bb9559a90b6a88..de2c90b84f4083 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/BUCK
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
 
 rn_robolectric_test(
     name = "views",
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/image/ImageResizeModeTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/image/ImageResizeModeTest.java
index 5bea9ba4d1fb33..12e5dc2e967864 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/image/ImageResizeModeTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/image/ImageResizeModeTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/image/ReactImagePropertyTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/image/ReactImagePropertyTest.java
index 2a1ee5755f813b..31299f46485c31 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/image/ReactImagePropertyTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/image/ReactImagePropertyTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/slider/ReactSliderPropertyTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/slider/ReactSliderPropertyTest.java
index 628b43c7c3f611..321f79c81a418d 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/slider/ReactSliderPropertyTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/slider/ReactSliderPropertyTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/text/CustomLineHeightSpanTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/text/CustomLineHeightSpanTest.java
index eadb7d3544bcb5..219143edfca99a 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/text/CustomLineHeightSpanTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/text/CustomLineHeightSpanTest.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.facebook.react.views.text;
 
 import android.graphics.Paint;
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/text/ReactTextTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/text/ReactTextTest.java
index cb113637326ada..d4843406e088a7 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/text/ReactTextTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/text/ReactTextTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -36,6 +36,7 @@
 import com.facebook.react.uimanager.ViewProps;
 import com.facebook.react.views.text.ReactRawTextShadowNode;
 import com.facebook.react.views.view.ReactViewBackgroundDrawable;
+import com.facebook.react.views.text.CustomTextTransformSpan;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -341,6 +342,70 @@ public void testBackgroundColorStyleApplied() {
     assertThat(((ReactViewBackgroundDrawable) backgroundDrawable).getColor()).isEqualTo(Color.BLUE);
   }
 
+  @Test
+  public void testTextTransformNoneApplied() {
+    UIManagerModule uiManager = getUIManagerModule();
+
+    String testTextEntered = ".aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   ";
+    String testTextTransformed = testTextEntered;
+
+    ReactRootView rootView = createText(
+        uiManager,
+        JavaOnlyMap.of("textTransform", "none"),
+        JavaOnlyMap.of(ReactRawTextShadowNode.PROP_TEXT, testTextEntered));
+
+    TextView textView = (TextView) rootView.getChildAt(0);
+    assertThat(textView.getText().toString()).isEqualTo(testTextTransformed);
+  }
+
+  @Test
+  public void testTextTransformUppercaseApplied() {
+    UIManagerModule uiManager = getUIManagerModule();
+
+    String testTextEntered = ".aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   ";
+    String testTextTransformed = ".AA\tBB\t\tCC  DD EE \r\nZZ I LIKE TO EAT APPLES. \n中文ÉÉ 我喜欢吃苹果。AWDAWD   ";
+
+    ReactRootView rootView = createText(
+        uiManager,
+        JavaOnlyMap.of("textTransform", "uppercase"),
+        JavaOnlyMap.of(ReactRawTextShadowNode.PROP_TEXT, testTextEntered));
+
+    TextView textView = (TextView) rootView.getChildAt(0);
+    assertThat(textView.getText().toString()).isEqualTo(testTextTransformed);
+  }
+
+  @Test
+  public void testTextTransformLowercaseApplied() {
+    UIManagerModule uiManager = getUIManagerModule();
+
+    String testTextEntered = ".aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   ";
+    String testTextTransformed = ".aa\tbb\t\tcc  dd ee \r\nzz i like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   ";
+
+    ReactRootView rootView = createText(
+        uiManager,
+        JavaOnlyMap.of("textTransform", "lowercase"),
+        JavaOnlyMap.of(ReactRawTextShadowNode.PROP_TEXT, testTextEntered));
+
+    TextView textView = (TextView) rootView.getChildAt(0);
+    assertThat(textView.getText().toString()).isEqualTo(testTextTransformed);
+  }
+
+  @Test
+  public void testTextTransformCapitalizeApplied() {
+    UIManagerModule uiManager = getUIManagerModule();
+
+    String testTextEntered = ".aa\tbb\t\tcc  dd EE \r\nZZ I like to eat apples. \n中文éé 我喜欢吃苹果。awdawd   ";
+    String testTextTransformed = ".Aa\tBb\t\tCc  Dd Ee \r\nZz I Like To Eat Apples. \n中文Éé 我喜欢吃苹果。Awdawd   ";
+
+    ReactRootView rootView = createText(
+        uiManager,
+        JavaOnlyMap.of("textTransform", "capitalize"),
+        JavaOnlyMap.of(ReactRawTextShadowNode.PROP_TEXT, testTextEntered));
+
+    TextView textView = (TextView) rootView.getChildAt(0);
+    assertThat(textView.getText().toString()).isEqualTo(testTextTransformed);
+  }
+
   // JELLY_BEAN is needed for TextView#getMaxLines(), which is OK, because in the actual code we
   // only use TextView#setMaxLines() which exists since API Level 1.
   @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/textinput/ReactTextInputPropertyTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/textinput/ReactTextInputPropertyTest.java
index dc6a8dc10abddc..50fc92e218d3ed 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/textinput/ReactTextInputPropertyTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/textinput/ReactTextInputPropertyTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/textinput/TextInputTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/textinput/TextInputTest.java
index c9794d7d00cfaf..db2bd13d1ad9d4 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/textinput/TextInputTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/textinput/TextInputTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/com/facebook/react/views/view/ColorUtilTest.java b/ReactAndroid/src/test/java/com/facebook/react/views/view/ColorUtilTest.java
index 335458952a13c1..9a813694e8b587 100644
--- a/ReactAndroid/src/test/java/com/facebook/react/views/view/ColorUtilTest.java
+++ b/ReactAndroid/src/test/java/com/facebook/react/views/view/ColorUtilTest.java
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactAndroid/src/test/java/org/mockito/configuration/BUCK b/ReactAndroid/src/test/java/org/mockito/configuration/BUCK
index 62bf397823503a..99bce2a385eb49 100644
--- a/ReactAndroid/src/test/java/org/mockito/configuration/BUCK
+++ b/ReactAndroid/src/test/java/org/mockito/configuration/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "react_native_dep", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "rn_android_library")
 
 rn_android_library(
     name = "configuration",
diff --git a/ReactAndroid/src/test/java/org/mockito/configuration/MockitoConfiguration.java b/ReactAndroid/src/test/java/org/mockito/configuration/MockitoConfiguration.java
index 427dd77b534134..6f48dee254c4bf 100644
--- a/ReactAndroid/src/test/java/org/mockito/configuration/MockitoConfiguration.java
+++ b/ReactAndroid/src/test/java/org/mockito/configuration/MockitoConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/.clang-format b/ReactCommon/.clang-format
new file mode 100644
index 00000000000000..34fb029ee3ce36
--- /dev/null
+++ b/ReactCommon/.clang-format
@@ -0,0 +1,87 @@
+---
+AccessModifierOffset: -1
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: true
+AlignOperands:   false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit:       80
+CommentPragmas:  '^ IWYU pragma:'
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ForEachMacros:   [ FOR_EACH_RANGE, FOR_EACH, ]
+IncludeCategories:
+  - Regex:           '^<.*\.h(pp)?>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IndentCaseLabels: true
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: false
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Cpp11
+TabWidth:        8
+UseTab:          Never
+...
diff --git a/ReactCommon/cxxreact/Android.mk b/ReactCommon/cxxreact/Android.mk
index 90d5761580e4dc..adf21471a460ee 100644
--- a/ReactCommon/cxxreact/Android.mk
+++ b/ReactCommon/cxxreact/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
@@ -14,7 +19,7 @@ LOCAL_SRC_FILES := \
   JSBigString.cpp \
   JSBundleType.cpp \
   JSDeltaBundleClient.cpp \
-	JSExecutor.cpp \
+  JSExecutor.cpp \
   JSIndexedRAMBundle.cpp \
   MethodCall.cpp \
   ModuleRegistry.cpp \
@@ -29,6 +34,7 @@ LOCAL_EXPORT_C_INCLUDES := $(LOCAL_C_INCLUDES)
 LOCAL_CFLAGS := \
   -DLOG_TAG=\"ReactNative\"
 
+LOCAL_STATIC_LIBRARIES := boost
 LOCAL_SHARED_LIBRARIES := libfb libfolly_json libglog 
 LOCAL_CXXFLAGS += -fexceptions -frtti
 
@@ -59,6 +65,7 @@ else
   LOCAL_SHARED_LIBRARIES += libjsc
 endif
 
+
 include $(BUILD_STATIC_LIBRARY)
 
 $(call import-module,fb)
diff --git a/ReactCommon/cxxreact/BUCK b/ReactCommon/cxxreact/BUCK
index b24c56a3c8f1be..929d766b49cba8 100644
--- a/ReactCommon/cxxreact/BUCK
+++ b/ReactCommon/cxxreact/BUCK
@@ -1,5 +1,5 @@
-load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
-load("//ReactNative:DEFS.bzl", "ANDROID", "ANDROID_JSC_DEPS", "APPLE", "get_apple_compiler_flags", "APPLE_JSC_DEPS", "get_debug_preprocessor_flags", "IS_OSS_BUILD", "get_android_inspector_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
+load("@fbsource//tools/build_defs:glob_defs.bzl", "subdir_glob")
+load("//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "APPLE", "get_android_inspector_flags", "get_apple_compiler_flags", "get_apple_inspector_flags", "get_debug_preprocessor_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
 CXX_LIBRARY_COMPILER_FLAGS = [
     "-std=c++14",
@@ -80,11 +80,8 @@ CXXREACT_PUBLIC_HEADERS = [
     "CxxNativeModule.h",
     "Instance.h",
     "JSBundleType.h",
-    "JSExecutor.h",
-    "JSCExecutor.h",
-    "JSCNativeModules.h",
-    "JSCUtils.h",
     "JSDeltaBundleClient.h",
+    "JSExecutor.h",
     "JSIndexedRAMBundle.h",
     "JSModulesUnbundle.h",
     "MessageQueueThread.h",
@@ -92,7 +89,6 @@ CXXREACT_PUBLIC_HEADERS = [
     "ModuleRegistry.h",
     "NativeModule.h",
     "NativeToJsBridge.h",
-    "Platform.h",
     "RAMBundleRegistry.h",
     "ReactMarker.h",
     "RecoverableError.h",
@@ -125,20 +121,10 @@ rn_xplat_cxx_library(
         "-fexceptions",
         "-frtti",
     ],
-    fbandroid_deps = ANDROID_JSC_DEPS,
-    fbandroid_preprocessor_flags = get_android_inspector_flags() + [
-        "-DWITH_JSC_EXTRA_TRACING=1",
-        "-DWITH_JSC_MEMORY_PRESSURE=1",
-        "-DWITH_FB_MEMORY_PROFILING=1",
-    ],
+    fbandroid_preprocessor_flags = get_android_inspector_flags(),
     fbobjc_compiler_flags = get_apple_compiler_flags(),
-    fbobjc_deps = APPLE_JSC_DEPS,
     fbobjc_force_static = True,
-    fbobjc_frameworks = [
-        "$SDKROOT/System/Library/Frameworks/JavaScriptCore.framework",
-    ],
     fbobjc_preprocessor_flags = get_debug_preprocessor_flags() + get_apple_inspector_flags(),
-    force_static = True,
     macosx_tests_override = [],
     platforms = (ANDROID, APPLE),
     preprocessor_flags = [
@@ -156,12 +142,9 @@ rn_xplat_cxx_library(
         "xplat//folly:molly",
         ":jsbigstring",
         ":module",
-        react_native_xplat_target("jschelpers:jschelpers"),
         react_native_xplat_target("jsinspector:jsinspector"),
         react_native_xplat_target("microprofiler:microprofiler"),
         "xplat//folly:optional",
         "xplat//third-party/glog:glog",
-        react_native_xplat_target("jschelpers:jscinternalhelpers"),
-        react_native_xplat_target("privatedata:privatedata"),
     ],
 )
diff --git a/ReactCommon/cxxreact/CxxModule.h b/ReactCommon/cxxreact/CxxModule.h
index 0eb78da8da7d25..f6a1ab2345ba4f 100644
--- a/ReactCommon/cxxreact/CxxModule.h
+++ b/ReactCommon/cxxreact/CxxModule.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/CxxNativeModule.cpp b/ReactCommon/cxxreact/CxxNativeModule.cpp
index 675c2222ea5f1a..cb29e989b6ea7d 100644
--- a/ReactCommon/cxxreact/CxxNativeModule.cpp
+++ b/ReactCommon/cxxreact/CxxNativeModule.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -136,6 +136,8 @@ void CxxNativeModule::invoke(unsigned int reactMethodId, folly::dynamic&& params
     if (callId != -1) {
       fbsystrace_end_async_flow(TRACE_TAG_REACT_APPS, "native", callId);
     }
+  #else
+    (void)(callId);
   #endif
     SystraceSection s(method.name.c_str());
     try {
diff --git a/ReactCommon/cxxreact/CxxNativeModule.h b/ReactCommon/cxxreact/CxxNativeModule.h
index 674885ff30f804..2bf303f46de2eb 100644
--- a/ReactCommon/cxxreact/CxxNativeModule.h
+++ b/ReactCommon/cxxreact/CxxNativeModule.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/Instance.cpp b/ReactCommon/cxxreact/Instance.cpp
index 3f65550e2a1ad0..34ad9c25680e9a 100644
--- a/ReactCommon/cxxreact/Instance.cpp
+++ b/ReactCommon/cxxreact/Instance.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/Instance.h b/ReactCommon/cxxreact/Instance.h
index 91bb0cf82b7dab..94affcfce59afe 100644
--- a/ReactCommon/cxxreact/Instance.h
+++ b/ReactCommon/cxxreact/Instance.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSBigString.cpp b/ReactCommon/cxxreact/JSBigString.cpp
index 935451e7494d4a..7fc12d0dc3c114 100644
--- a/ReactCommon/cxxreact/JSBigString.cpp
+++ b/ReactCommon/cxxreact/JSBigString.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -8,10 +8,14 @@
 #include <fcntl.h>
 #include <sys/stat.h>
 
+#include <glog/logging.h>
+
 #include <folly/Memory.h>
 #include <folly/portability/SysMman.h>
 #include <folly/ScopeGuard.h>
 
+#include <unistd.h> // ISS for `dup` that we don't pull in otherwise
+
 namespace facebook {
 namespace react {
 
@@ -19,6 +23,7 @@ JSBigFileString::JSBigFileString(int fd, size_t size, off_t offset /*= 0*/)
   : m_fd{ -1 }
   , m_data{ nullptr }
 {
+  dup(3);
   folly::checkUnixError(m_fd = dup(fd),
     "Could not duplicate file descriptor");
 
diff --git a/ReactCommon/cxxreact/JSBigString.h b/ReactCommon/cxxreact/JSBigString.h
index 6ed253cf422066..35856c63066245 100644
--- a/ReactCommon/cxxreact/JSBigString.h
+++ b/ReactCommon/cxxreact/JSBigString.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSBundleType.cpp b/ReactCommon/cxxreact/JSBundleType.cpp
index f74fa7d46fca74..f2b7a519a798fc 100644
--- a/ReactCommon/cxxreact/JSBundleType.cpp
+++ b/ReactCommon/cxxreact/JSBundleType.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSBundleType.h b/ReactCommon/cxxreact/JSBundleType.h
index 0f50273171d8df..0cd18948a6fb6d 100644
--- a/ReactCommon/cxxreact/JSBundleType.h
+++ b/ReactCommon/cxxreact/JSBundleType.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSCLegacyTracing.h b/ReactCommon/cxxreact/JSCLegacyTracing.h
deleted file mode 100644
index e0f1b7bf520435..00000000000000
--- a/ReactCommon/cxxreact/JSCLegacyTracing.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <jschelpers/JavaScriptCore.h>
-
-namespace facebook {
-namespace react {
-
-void addNativeTracingLegacyHooks(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactCommon/cxxreact/JSCMemory.h b/ReactCommon/cxxreact/JSCMemory.h
deleted file mode 100644
index d8e797aab2d4ad..00000000000000
--- a/ReactCommon/cxxreact/JSCMemory.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <jschelpers/JavaScriptCore.h>
-
-namespace facebook {
-namespace react {
-
-void addJSCMemoryHooks(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactCommon/cxxreact/JSCNativeModules.h b/ReactCommon/cxxreact/JSCNativeModules.h
deleted file mode 100644
index 40f0fd69f55297..00000000000000
--- a/ReactCommon/cxxreact/JSCNativeModules.h
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <memory>
-#include <string>
-
-#include <folly/Optional.h>
-#include <jschelpers/Value.h>
-
-namespace facebook {
-namespace react {
-
-class ModuleRegistry;
-
-/**
- * Holds and creates JS representations of the modules in ModuleRegistry
- */
-class JSCNativeModules {
-
-public:
-  explicit JSCNativeModules(std::shared_ptr<ModuleRegistry> moduleRegistry);
-  JSValueRef getModule(JSContextRef context, JSStringRef name);
-  void reset();
-
-private:
-  folly::Optional<Object> m_genNativeModuleJS;
-  std::shared_ptr<ModuleRegistry> m_moduleRegistry;
-  std::unordered_map<std::string, Object> m_objects;
-
-  folly::Optional<Object> createModule(const std::string& name, JSContextRef context);
-};
-
-}
-}
diff --git a/ReactCommon/cxxreact/JSCPerfStats.h b/ReactCommon/cxxreact/JSCPerfStats.h
deleted file mode 100644
index 1ecf70bf14bc5d..00000000000000
--- a/ReactCommon/cxxreact/JSCPerfStats.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <jschelpers/JavaScriptCore.h>
-
-namespace facebook {
-namespace react {
-
-void addJSCPerfStatsHooks(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactCommon/cxxreact/JSCSamplingProfiler.h b/ReactCommon/cxxreact/JSCSamplingProfiler.h
deleted file mode 100644
index b252db61f57e02..00000000000000
--- a/ReactCommon/cxxreact/JSCSamplingProfiler.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <jschelpers/JavaScriptCore.h>
-
-namespace facebook {
-namespace react {
-
-void initSamplingProfilerOnMainJSCThread(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactCommon/cxxreact/JSCTracing.h b/ReactCommon/cxxreact/JSCTracing.h
deleted file mode 100644
index 0a0b1b39a75670..00000000000000
--- a/ReactCommon/cxxreact/JSCTracing.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <jschelpers/JavaScriptCore.h>
-
-namespace facebook {
-namespace react {
-
-void addNativeTracingHooks(JSGlobalContextRef ctx);
-
-} }
diff --git a/ReactCommon/cxxreact/JSCUtils.cpp b/ReactCommon/cxxreact/JSCUtils.cpp
deleted file mode 100644
index 25e4da18540714..00000000000000
--- a/ReactCommon/cxxreact/JSCUtils.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#include "JSCUtils.h"
-
-#include "RAMBundleRegistry.h"
-
-#include <folly/Conv.h>
-
-namespace facebook {
-namespace react {
-
-String jsStringFromBigString(JSContextRef ctx, const JSBigString& bigstr) {
-  if (bigstr.isAscii()) {
-    return String::createExpectingAscii(ctx, bigstr.c_str(), bigstr.size());
-  } else {
-    return String(ctx, bigstr.c_str());
-  }
-}
-
-}
-}
diff --git a/ReactCommon/cxxreact/JSCUtils.h b/ReactCommon/cxxreact/JSCUtils.h
deleted file mode 100644
index feeae32c7a9368..00000000000000
--- a/ReactCommon/cxxreact/JSCUtils.h
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-
-#include <cxxreact/JSBigString.h>
-#include <jschelpers/JavaScriptCore.h>
-#include <jschelpers/Value.h>
-
-namespace facebook {
-namespace react {
-
-String jsStringFromBigString(JSContextRef ctx, const JSBigString& bigstr);
-
-}
-}
diff --git a/ReactCommon/cxxreact/JSDeltaBundleClient.cpp b/ReactCommon/cxxreact/JSDeltaBundleClient.cpp
index 8c082d04c8fb10..86edf47c80069d 100644
--- a/ReactCommon/cxxreact/JSDeltaBundleClient.cpp
+++ b/ReactCommon/cxxreact/JSDeltaBundleClient.cpp
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 #include "JSDeltaBundleClient.h"
 
 #include <sstream>
@@ -13,9 +18,7 @@ namespace {
 
     for (auto section : {pre, post}) {
       if (section != nullptr) {
-        for (folly::dynamic pair : *section) {
-          startupCode << pair[1].getString() << '\n';
-        }
+        startupCode << section->getString() << '\n';
       }
     }
 
@@ -24,28 +27,30 @@ namespace {
 } // namespace
 
 void JSDeltaBundleClient::patch(const folly::dynamic& delta) {
-  auto const reset = delta.get_ptr("reset");
-  if (reset != nullptr && reset->asBool()) {
+  auto const base = delta.get_ptr("base");
+
+  if (base != nullptr && base->asBool()) {
     clear();
-  }
 
-  auto const pre = delta.get_ptr("pre");
-  auto const post = delta.get_ptr("post");
+    auto const pre = delta.get_ptr("pre");
+    auto const post = delta.get_ptr("post");
 
-  if ((pre != nullptr && pre->size() > 0) || (post != nullptr && post->size() > 0)) {
     startupCode_ = startupCode(pre, post);
+  } else {
+    const folly::dynamic *deleted = delta.get_ptr("deleted");
+    if (deleted != nullptr) {
+      for (const folly::dynamic id : *deleted) {
+        modules_.erase(id.getInt());
+      }
+    }
   }
 
-  const folly::dynamic *modules = delta.get_ptr("delta");
+  const folly::dynamic *modules = delta.get_ptr("modules");
   if (modules != nullptr) {
     for (const folly::dynamic pair : *modules) {
       auto id = pair[0].getInt();
       auto module = pair[1];
-      if (module.isNull()) {
-        modules_.erase(id);
-      } else {
-        modules_.emplace(id, module.getString());
-      }
+      modules_.emplace(id, module.getString());
     }
   }
 }
diff --git a/ReactCommon/cxxreact/JSDeltaBundleClient.h b/ReactCommon/cxxreact/JSDeltaBundleClient.h
index 021ae6c622cf89..823beab076fbb3 100644
--- a/ReactCommon/cxxreact/JSDeltaBundleClient.h
+++ b/ReactCommon/cxxreact/JSDeltaBundleClient.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSExecutor.cpp b/ReactCommon/cxxreact/JSExecutor.cpp
index 846273ab37f702..ca88df2ec3129b 100644
--- a/ReactCommon/cxxreact/JSExecutor.cpp
+++ b/ReactCommon/cxxreact/JSExecutor.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSExecutor.h b/ReactCommon/cxxreact/JSExecutor.h
index 3d52f00cbfc4c8..a769575d71472d 100644
--- a/ReactCommon/cxxreact/JSExecutor.h
+++ b/ReactCommon/cxxreact/JSExecutor.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -75,9 +75,9 @@ class RN_EXPORT JSExecutor {
    * Execute an application script bundle in the JS context.
    */
   virtual void loadApplicationScript(std::unique_ptr<const JSBigString> script,
-                                     uint64_t scriptVersion,
+                                     uint64_t scriptVersion, // TODO(OSS Candidate ISS#2710739)
                                      std::string sourceURL,
-                                     std::string&& bytecodeFileName) = 0;
+                                     std::string&& bytecodeFileName) = 0; // TODO(OSS Candidate ISS#2710739)
 
   /**
    * Add an application "RAM" bundle registry
diff --git a/ReactCommon/cxxreact/JSIndexedRAMBundle.cpp b/ReactCommon/cxxreact/JSIndexedRAMBundle.cpp
index cca4ab20338fd0..237b9550f08225 100644
--- a/ReactCommon/cxxreact/JSIndexedRAMBundle.cpp
+++ b/ReactCommon/cxxreact/JSIndexedRAMBundle.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSIndexedRAMBundle.h b/ReactCommon/cxxreact/JSIndexedRAMBundle.h
index e91ed076813dd2..be6b27f7a84576 100644
--- a/ReactCommon/cxxreact/JSIndexedRAMBundle.h
+++ b/ReactCommon/cxxreact/JSIndexedRAMBundle.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JSModulesUnbundle.h b/ReactCommon/cxxreact/JSModulesUnbundle.h
index f1662776c312ed..c926a5982c8ef8 100644
--- a/ReactCommon/cxxreact/JSModulesUnbundle.h
+++ b/ReactCommon/cxxreact/JSModulesUnbundle.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JsArgumentHelpers-inl.h b/ReactCommon/cxxreact/JsArgumentHelpers-inl.h
index 63ce70cf060fb9..f5877556b55375 100644
--- a/ReactCommon/cxxreact/JsArgumentHelpers-inl.h
+++ b/ReactCommon/cxxreact/JsArgumentHelpers-inl.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/JsArgumentHelpers.h b/ReactCommon/cxxreact/JsArgumentHelpers.h
index ba6cd62af898d8..9d256fa172e083 100644
--- a/ReactCommon/cxxreact/JsArgumentHelpers.h
+++ b/ReactCommon/cxxreact/JsArgumentHelpers.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/MessageQueueThread.h b/ReactCommon/cxxreact/MessageQueueThread.h
index 5158646281ab14..4919273d622d16 100644
--- a/ReactCommon/cxxreact/MessageQueueThread.h
+++ b/ReactCommon/cxxreact/MessageQueueThread.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/MethodCall.cpp b/ReactCommon/cxxreact/MethodCall.cpp
index aa9946ea12eb4e..31eb5dea3dee65 100644
--- a/ReactCommon/cxxreact/MethodCall.cpp
+++ b/ReactCommon/cxxreact/MethodCall.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -77,4 +77,3 @@ std::vector<MethodCall> parseMethodCalls(folly::dynamic&& jsonData) {
 }
 
 }}
-
diff --git a/ReactCommon/cxxreact/MethodCall.h b/ReactCommon/cxxreact/MethodCall.h
index 72693409f9977c..be843b9abd2ea0 100644
--- a/ReactCommon/cxxreact/MethodCall.h
+++ b/ReactCommon/cxxreact/MethodCall.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -27,6 +27,7 @@ struct MethodCall {
     , callId(cid) {}
 };
 
-std::vector<MethodCall> parseMethodCalls(folly::dynamic&& calls) /* throw(std::invalid_argument) */;
+/// \throws std::invalid_argument
+std::vector<MethodCall> parseMethodCalls(folly::dynamic&& calls);
 
 } }
diff --git a/ReactCommon/cxxreact/ModuleRegistry.cpp b/ReactCommon/cxxreact/ModuleRegistry.cpp
index f897bc300ad29e..1d3ba722b8d36d 100644
--- a/ReactCommon/cxxreact/ModuleRegistry.cpp
+++ b/ReactCommon/cxxreact/ModuleRegistry.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -90,13 +90,13 @@ folly::Optional<ModuleConfig> ModuleRegistry::getConfig(const std::string& name)
 
   if (it == modulesByName_.end()) {
     if (unknownModules_.find(name) != unknownModules_.end()) {
-      return nullptr;
+      return folly::none;
     }
     if (!moduleNotFoundCallback_ ||
         !moduleNotFoundCallback_(name) ||
         (it = modulesByName_.find(name)) == modulesByName_.end()) {
       unknownModules_.insert(name);
-      return nullptr;
+      return folly::none;
     }
   }
   size_t index = it->second;
@@ -143,7 +143,7 @@ folly::Optional<ModuleConfig> ModuleRegistry::getConfig(const std::string& name)
 
   if (config.size() == 2 && config[1].empty()) {
     // no constants or methods
-    return nullptr;
+    return folly::none;
   } else {
     return ModuleConfig{index, config};
   }
diff --git a/ReactCommon/cxxreact/ModuleRegistry.h b/ReactCommon/cxxreact/ModuleRegistry.h
index 3806384a4515eb..b76d96261f860d 100644
--- a/ReactCommon/cxxreact/ModuleRegistry.h
+++ b/ReactCommon/cxxreact/ModuleRegistry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/NativeModule.h b/ReactCommon/cxxreact/NativeModule.h
index a7229b24aa7da8..e01756b57f9d94 100644
--- a/ReactCommon/cxxreact/NativeModule.h
+++ b/ReactCommon/cxxreact/NativeModule.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/NativeToJsBridge.cpp b/ReactCommon/cxxreact/NativeToJsBridge.cpp
index 38dd6d2f256211..46582e1be783c2 100644
--- a/ReactCommon/cxxreact/NativeToJsBridge.cpp
+++ b/ReactCommon/cxxreact/NativeToJsBridge.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -172,6 +172,9 @@ void NativeToJsBridge::callFunction(
           TRACE_TAG_REACT_CXX_BRIDGE,
           "JSCall",
           systraceCookie);
+      SystraceSection s("NativeToJsBridge::callFunction", "module", module, "method", method);
+      #else
+      (void)(systraceCookie);
       #endif
       SystraceSection s("NativeToJsBridge::callFunction", "module", module, "method", method);
       // This is safe because we are running on the executor's thread: it won't
@@ -203,6 +206,8 @@ void NativeToJsBridge::invokeCallback(double callbackId, folly::dynamic&& argume
           "<callback>",
           systraceCookie);
       SystraceSection s("NativeToJsBridge::invokeCallback");
+      #else
+      (void)(systraceCookie);
       #endif
       executor->invokeCallback(callbackId, arguments);
     });
diff --git a/ReactCommon/cxxreact/NativeToJsBridge.h b/ReactCommon/cxxreact/NativeToJsBridge.h
index 9e81d437299f3d..4656fd1b592726 100644
--- a/ReactCommon/cxxreact/NativeToJsBridge.h
+++ b/ReactCommon/cxxreact/NativeToJsBridge.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/RAMBundleRegistry.cpp b/ReactCommon/cxxreact/RAMBundleRegistry.cpp
index 3891fc8b19d777..f53370d3c4ac8f 100644
--- a/ReactCommon/cxxreact/RAMBundleRegistry.cpp
+++ b/ReactCommon/cxxreact/RAMBundleRegistry.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/RAMBundleRegistry.h b/ReactCommon/cxxreact/RAMBundleRegistry.h
index 7670b90b53ded7..224e1541b356ff 100644
--- a/ReactCommon/cxxreact/RAMBundleRegistry.h
+++ b/ReactCommon/cxxreact/RAMBundleRegistry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/ReactMarker.cpp b/ReactCommon/cxxreact/ReactMarker.cpp
index ae1a502efeb80a..075fd8ffbfd8ca 100644
--- a/ReactCommon/cxxreact/ReactMarker.cpp
+++ b/ReactCommon/cxxreact/ReactMarker.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/ReactMarker.h b/ReactCommon/cxxreact/ReactMarker.h
index c8249b50223b75..ef0e28a99f0076 100644
--- a/ReactCommon/cxxreact/ReactMarker.h
+++ b/ReactCommon/cxxreact/ReactMarker.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/RecoverableError.h b/ReactCommon/cxxreact/RecoverableError.h
index e724199dbf5ba7..2ecc64bfb4ae04 100644
--- a/ReactCommon/cxxreact/RecoverableError.h
+++ b/ReactCommon/cxxreact/RecoverableError.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/SampleCxxModule.cpp b/ReactCommon/cxxreact/SampleCxxModule.cpp
index 5a6d33abcefd79..1174a4fcdcef8d 100644
--- a/ReactCommon/cxxreact/SampleCxxModule.cpp
+++ b/ReactCommon/cxxreact/SampleCxxModule.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -114,6 +114,25 @@ auto SampleCxxModule::getMethods() -> std::vector<Method> {
         sample_->hello();
         return nullptr;
       }, SyncTag),
+    Method("addIfPositiveAsPromise", [](dynamic args, Callback cb, Callback cbError) {
+        auto a = jsArgAsDouble(args, 0);
+        auto b = jsArgAsDouble(args, 1);
+        if (a < 0 || b < 0) {
+          cbError({"Negative number!"});
+        } else {
+          cb({a + b});
+        }
+      }),
+    Method("addIfPositiveAsAsync", [](dynamic args, Callback cb, Callback cbError) {
+        auto a = jsArgAsDouble(args, 0);
+        auto b = jsArgAsDouble(args, 1);
+        if (a < 0 || b < 0) {
+          cbError({"Negative number!"});
+        } else {
+          cb({a + b});
+        }
+      }, AsyncTag),
+
   };
 }
 
diff --git a/ReactCommon/cxxreact/SampleCxxModule.h b/ReactCommon/cxxreact/SampleCxxModule.h
index 320ca3cf2c61ee..cea585d52584f1 100644
--- a/ReactCommon/cxxreact/SampleCxxModule.h
+++ b/ReactCommon/cxxreact/SampleCxxModule.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/SharedProxyCxxModule.h b/ReactCommon/cxxreact/SharedProxyCxxModule.h
index 18a66ebccf7efb..2e0d731dd23202 100644
--- a/ReactCommon/cxxreact/SharedProxyCxxModule.h
+++ b/ReactCommon/cxxreact/SharedProxyCxxModule.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/SystraceSection.h b/ReactCommon/cxxreact/SystraceSection.h
index 60df6985692a42..be29058dcbf810 100644
--- a/ReactCommon/cxxreact/SystraceSection.h
+++ b/ReactCommon/cxxreact/SystraceSection.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/tests/BUCK b/ReactCommon/cxxreact/tests/BUCK
index 24acdd3ad4c54f..8e2282f24ac2e4 100644
--- a/ReactCommon/cxxreact/tests/BUCK
+++ b/ReactCommon/cxxreact/tests/BUCK
@@ -1,21 +1,16 @@
 load(
-    "//ReactNative:DEFS.bzl",
-    "ANDROID_JSC_DEPS",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "APPLE",
-    "APPLE_JSC_DEPS",
-    "react_native_xplat_target",
-    "jni_instrumentation_test_lib",
     "fb_xplat_cxx_test",
+    "jni_instrumentation_test_lib",
+    "react_native_xplat_target",
 )
 
 TEST_SRCS = [
     "RecoverableErrorTest.cpp",
     "jsarg_helpers.cpp",
     "jsbigstring.cpp",
-    "jscexecutor.cpp",
-    "jsclogging.cpp",
     "methodcall.cpp",
-    "value.cpp",
 ]
 
 jni_instrumentation_test_lib(
@@ -32,10 +27,12 @@ jni_instrumentation_test_lib(
         "fbandroid//instrumentation_tests/...",
     ],
     deps = [
-        "xplat//third-party/linker_lib:android",
+        "xplat//folly:dynamic",
         "xplat//third-party/gmock:gtest",
+        "xplat//third-party/linker_lib:android",
+        "xplat//third-party/linker_lib:atomic",
         react_native_xplat_target("cxxreact:bridge"),
-    ] + ANDROID_JSC_DEPS,
+    ],
 )
 
 fb_xplat_cxx_test(
@@ -53,6 +50,5 @@ fb_xplat_cxx_test(
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
         react_native_xplat_target("cxxreact:bridge"),
-        react_native_xplat_target("jschelpers:jschelpers"),
-    ] + APPLE_JSC_DEPS,
+    ],
 )
diff --git a/ReactCommon/cxxreact/tests/RecoverableErrorTest.cpp b/ReactCommon/cxxreact/tests/RecoverableErrorTest.cpp
index d598d8318960af..ea84601c403cce 100644
--- a/ReactCommon/cxxreact/tests/RecoverableErrorTest.cpp
+++ b/ReactCommon/cxxreact/tests/RecoverableErrorTest.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/tests/jsarg_helpers.cpp b/ReactCommon/cxxreact/tests/jsarg_helpers.cpp
index 7e23dcd26c52de..2c52c1d8a37070 100644
--- a/ReactCommon/cxxreact/tests/jsarg_helpers.cpp
+++ b/ReactCommon/cxxreact/tests/jsarg_helpers.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/tests/jsbigstring.cpp b/ReactCommon/cxxreact/tests/jsbigstring.cpp
index f0081c889b6664..69e265c96f0891 100644
--- a/ReactCommon/cxxreact/tests/jsbigstring.cpp
+++ b/ReactCommon/cxxreact/tests/jsbigstring.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/tests/jscexecutor.cpp b/ReactCommon/cxxreact/tests/jscexecutor.cpp
deleted file mode 100644
index 867d68cd7f9d7e..00000000000000
--- a/ReactCommon/cxxreact/tests/jscexecutor.cpp
+++ /dev/null
@@ -1,273 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#include <gtest/gtest.h>
-#include <cxxreact/JSCExecutor.h>
-#include <cxxreact/MessageQueueThread.h>
-#include <cxxreact/MethodCall.h>
-
-using namespace facebook;
-using namespace facebook::react;
-
-
-// TODO(12340362): Fix these tests. And add checks for sizes.
-/*
-
-namespace {
-
-std::string capturedMethodCalls;
-
-struct NullDelegate : ExecutorDelegate {
-  virtual void registerExecutor(std::unique_ptr<JSExecutor> executor,
-                                std::shared_ptr<MessageQueueThread> queue) {
-    std::terminate();
-  }
-
-  virtual std::unique_ptr<JSExecutor> unregisterExecutor(JSExecutor& executor) {
-    std::terminate();
-  }
-
-  virtual std::vector<std::string> moduleNames() {
-    return std::vector<std::string>{};
-  }
-
-  virtual folly::dynamic getModuleConfig(const std::string& name) {
-    std::terminate();
-  }
-  virtual void callNativeModules(
-      JSExecutor& executor, std::string callJSON, bool isEndOfBatch) {
-    // TODO: capture calljson
-    std::terminate();
-  }
-  virtual MethodCallResult callSerializableNativeHook(
-      JSExecutor& executor, unsigned int moduleId, unsigned int methodId, folly::dynamic&& args) {
-    std::terminate();
-  }
-};
-
-struct FakeMessageQueue : MessageQueueThread {
-  virtual void runOnQueue(std::function<void()>&& runnable) {
-    // This is wrong, but oh well.
-    runnable();
-  }
-
-  virtual void runOnQueueSync(std::function<void()>&& runnable) {
-    runnable();
-  }
-
-  virtual void quitSynchronous() {
-    std::terminate();
-  }
-};
-
-std::vector<MethodCall> executeForMethodCalls(
-    JSCExecutor& e,
-    int moduleId,
-    int methodId,
-    folly::dynamic args = folly::dynamic::array()) {
-  e.callFunction(folly::to<std::string>(moduleId), folly::to<std::string>(methodId), std::move(args));
-  return parseMethodCalls(capturedMethodCalls);
-}
-
-void loadApplicationScript(JSCExecutor& e, std::string jsText) {
-  e.loadApplicationScript(std::unique_ptr<JSBigString>(new JSBigStdString(jsText)), "");
-}
-
-void setGlobalVariable(JSCExecutor& e, std::string name, std::string jsonObject) {
-  e.setGlobalVariable(name, std::unique_ptr<JSBigString>(new JSBigStdString(jsonObject)));
-}
-
-}
-
-TEST(JSCExecutor, Initialize) {
-  JSCExecutor executor(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-}
-
-TEST(JSCExecutor, Two) {
-  JSCExecutor exec1(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  JSCExecutor exec2(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-}
-
-TEST(JSCExecutor, CallFunction) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    return [[module + 1], [method + 1], [args]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  folly::dynamic args = folly::dynamic::array();
-  args.push_back(true);
-  args.push_back(0.4);
-  args.push_back("hello, world");
-  args.push_back(4.0);
-  auto returnedCalls = executeForMethodCalls(e, 10, 9, args);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  EXPECT_EQ(11, returnedCall.moduleId);
-  EXPECT_EQ(10, returnedCall.methodId);
-  ASSERT_EQ(4, returnedCall.arguments.size());
-  EXPECT_EQ(args[0], returnedCall.arguments[0]);
-  EXPECT_EQ(args[1], returnedCall.arguments[1]);
-  EXPECT_EQ(args[2], returnedCall.arguments[2]);
-  EXPECT_EQ(folly::dynamic(4.0), returnedCall.arguments[3]);
-}
-
-TEST(JSCExecutor, CallFunctionWithMap) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    var s = args[0].foo + args[0].bar + args[0].baz;"
-  "    return [[module], [method], [[s]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  folly::dynamic args = folly::dynamic::array();
-  folly::dynamic map = folly::dynamic::object
-    ("foo", folly::dynamic("hello"))
-    ("bar", folly::dynamic(4.0))
-    ("baz", folly::dynamic(true))
-  ;
-  args.push_back(std::move(map));
-  auto returnedCalls = executeForMethodCalls(e, 10, 9, args);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  EXPECT_EQ("hello4true", returnedCall.arguments[0].getString());
-}
-
-TEST(JSCExecutor, CallFunctionReturningMap) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    var s = { foo: 4, bar: true };"
-  "    return [[module], [method], [[s]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  auto returnedCalls = executeForMethodCalls(e, 10, 9);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  ASSERT_EQ(folly::dynamic::OBJECT, returnedCall.arguments[0].type());
-  auto& returnedMap = returnedCall.arguments[0];
-  auto foo = returnedMap.at("foo");
-  EXPECT_EQ(folly::dynamic(4.0), foo);
-  auto bar = returnedMap.at("bar");
-  EXPECT_EQ(folly::dynamic(true), bar);
-}
-
-TEST(JSCExecutor, CallFunctionWithArray) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    var s = args[0][0]+ args[0][1] + args[0][2] + args[0].length;"
-  "    return [[module], [method], [[s]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  std::vector<folly::dynamic> args;
-  std::vector<folly::dynamic> array {
-    folly::dynamic("hello"),
-    folly::dynamic(4.0),
-    folly::dynamic(true),
-  };
-  args.push_back(std::move(array));
-  auto returnedCalls = executeForMethodCalls(e, 10, 9, args);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  EXPECT_EQ("hello4true3", returnedCall.arguments[0].getString());
-}
-
-TEST(JSCExecutor, CallFunctionReturningNumberArray) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    var s = [3, 1, 4];"
-  "    return [[module], [method], [[s]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  auto returnedCalls = executeForMethodCalls(e, 10, 9);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  ASSERT_EQ(folly::dynamic::ARRAY, returnedCall.arguments[0].type());
-
-  auto& array = returnedCall.arguments[0];
-  EXPECT_EQ(3, array.size());
-  EXPECT_EQ(folly::dynamic(3.0), array[0]);
-  EXPECT_EQ(folly::dynamic(4.0), array[2]);
-}
-
-TEST(JSCExecutor, SetSimpleGlobalVariable) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    return [[module], [method], [[__foo]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  setGlobalVariable(e, "__foo", "42");
-  auto returnedCalls = executeForMethodCalls(e, 10, 9);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  ASSERT_EQ(42.0, returnedCall.arguments[0].getDouble());
-}
-
-TEST(JSCExecutor, SetObjectGlobalVariable) {
-  auto jsText = ""
-  "var Bridge = {"
-  "  callFunctionReturnFlushedQueue: function (module, method, args) {"
-  "    return [[module], [method], [[__foo]]];"
-  "  },"
-  "};"
-  "function require() { return Bridge; }"
-  "";
-  JSCExecutor e(std::make_shared<NullDelegate>(), std::make_shared<FakeMessageQueue>(), "", folly::dynamic::object);
-  loadApplicationScript(e, jsText);
-  auto jsonObject = ""
-  "{"
-  "  \"foo\": \"hello\","
-  "  \"bar\": 4,"
-  "  \"baz\": true"
-  "}"
-  "";
-  setGlobalVariable(e, "__foo", jsonObject);
-  auto returnedCalls = executeForMethodCalls(e, 10, 9);
-  ASSERT_EQ(1, returnedCalls.size());
-  auto returnedCall = returnedCalls[0];
-  ASSERT_EQ(1, returnedCall.arguments.size());
-  ASSERT_EQ(folly::dynamic::OBJECT, returnedCall.arguments[0].type());
-  auto& returnedMap = returnedCall.arguments[0];
-  auto foo = returnedMap.at("foo");
-  EXPECT_EQ(folly::dynamic("hello"), foo);
-  auto bar = returnedMap.at("bar");
-  EXPECT_EQ(folly::dynamic(4.0), bar);
-  auto baz = returnedMap.at("baz");
-  EXPECT_EQ(folly::dynamic(true), baz);
-}
-
-*/
diff --git a/ReactCommon/cxxreact/tests/jsclogging.cpp b/ReactCommon/cxxreact/tests/jsclogging.cpp
deleted file mode 100644
index 5f4fb0a66ad3a2..00000000000000
--- a/ReactCommon/cxxreact/tests/jsclogging.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#include <gtest/gtest.h>
-#include <cxxreact/JSCExecutor.h>
-
-using namespace facebook;
-using namespace facebook::react;
-
-/*
-static const char* expectedLogMessageSubstring = NULL;
-static bool hasSeenExpectedLogMessage = false;
-
-static void mockLogHandler(int pri, const char *tag, const char *msg) {
-  if (expectedLogMessageSubstring == NULL) {
-    return;
-  }
-
-  hasSeenExpectedLogMessage |= (strstr(msg, expectedLogMessageSubstring) != NULL);
-}
-
-class JSCLoggingTest : public testing::Test {
-  protected:
-    virtual void SetUp() override {
-      setLogHandler(&mockLogHandler);
-    }
-
-    virtual void TearDown() override {
-      setLogHandler(NULL);
-      expectedLogMessageSubstring = NULL;
-      hasSeenExpectedLogMessage = false;
-    }
-
-};
-
-TEST_F(JSCLoggingTest, LogException) {
-  auto jsText = "throw new Error('I am a banana!');";
-  expectedLogMessageSubstring = "I am a banana!";
-
-  JSCExecutor e;
-  e.loadApplicationScript(jsText, "");
-
-  ASSERT_TRUE(hasSeenExpectedLogMessage);
-}
-*/
diff --git a/ReactCommon/cxxreact/tests/methodcall.cpp b/ReactCommon/cxxreact/tests/methodcall.cpp
index 395a81b4984ea9..15e47e0acc97c8 100644
--- a/ReactCommon/cxxreact/tests/methodcall.cpp
+++ b/ReactCommon/cxxreact/tests/methodcall.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/cxxreact/tests/value.cpp b/ReactCommon/cxxreact/tests/value.cpp
deleted file mode 100644
index f7c4b6fd2771b4..00000000000000
--- a/ReactCommon/cxxreact/tests/value.cpp
+++ /dev/null
@@ -1,108 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-#include <string>
-#include <gtest/gtest.h>
-#include <folly/json.h>
-#include <jschelpers/Value.h>
-
-#ifdef WITH_FBJSCEXTENSION
-#undef ASSERT
-#include <JavaScriptCore/config.h>
-#include "OpaqueJSString.h"
-#endif
-
-#include <stdexcept>
-
-using namespace facebook::react;
-
-#ifdef ANDROID
-#include <android/looper.h>
-static void prepare() {
-  ALooper_prepare(0);
-}
-#else
-static void prepare() {}
-#endif
-
-TEST(Value, Undefined) {
-  prepare();
-  JSGlobalContextRef ctx = JSC_JSGlobalContextCreateInGroup(false, nullptr, nullptr);
-  auto v = Value::makeUndefined(ctx);
-  auto s = String::adopt(ctx, JSC_JSValueToStringCopy(ctx, v, nullptr));
-  EXPECT_EQ("undefined", s.str());
-  JSC_JSGlobalContextRelease(ctx);
-}
-
-TEST(Value, FromJSON) {
-  prepare();
-  JSGlobalContextRef ctx = JSC_JSGlobalContextCreateInGroup(false, nullptr, nullptr);
-  String s(ctx, "{\"a\": 4}");
-  Value v(Value::fromJSON(s));
-  EXPECT_TRUE(v.isObject());
-  JSC_JSGlobalContextRelease(ctx);
-}
-
-TEST(Value, ToJSONString) {
-  prepare();
-  JSGlobalContextRef ctx = JSC_JSGlobalContextCreateInGroup(false, nullptr, nullptr);
-  String s(ctx, "{\"a\": 4}");
-  Value v(Value::fromJSON(s));
-  folly::dynamic dyn = folly::parseJson(v.toJSONString());
-  ASSERT_NE(nullptr, dyn);
-  EXPECT_TRUE(dyn.isObject());
-  auto val = dyn.at("a");
-  ASSERT_NE(nullptr, val);
-  ASSERT_TRUE(val.isNumber());
-  EXPECT_EQ(4, val.asInt());
-  EXPECT_EQ(4.0f, val.asDouble());
-
-  JSC_JSGlobalContextRelease(ctx);
-}
-
-#ifdef WITH_FBJSCEXTENSION
-// Just test that handling invalid data doesn't crash.
-TEST(Value, FromBadUtf8) {
-  prepare();
-  JSGlobalContextRef ctx = JSC_JSGlobalContextCreateInGroup(false, nullptr, nullptr);
-  // 110xxxxx 10xxxxxx
-  auto dyn = folly::dynamic("\xC0");
-  Value::fromDynamic(ctx, dyn);
-  dyn = folly::dynamic("\xC0\x00");
-  Value::fromDynamic(ctx, dyn);
-  // 1110xxxx 10xxxxxx  10xxxxxx
-  dyn = "\xE0";
-  Value::fromDynamic(ctx, dyn);
-  Value(ctx, Value::fromDynamic(ctx, dyn)).toJSONString();
-  dyn = "\xE0\x00";
-  Value::fromDynamic(ctx, dyn);
-  Value(ctx, Value::fromDynamic(ctx, dyn)).toJSONString();
-  dyn = "\xE0\x00\x00";
-  Value::fromDynamic(ctx, dyn);
-  Value(ctx, Value::fromDynamic(ctx, dyn)).toJSONString();
-  dyn = "\xE0\xA0\x00";
-  Value::fromDynamic(ctx, dyn);
-  // 11110xxx 10xxxxxx  10xxxxxx  10xxxxxx
-  dyn = "\xF0";
-  Value::fromDynamic(ctx, dyn);
-  Value(ctx, Value::fromDynamic(ctx, dyn)).toJSONString();
-  dyn = "\xF0\x00\x00\x00";
-  Value::fromDynamic(ctx, dyn);
-  dyn = "\xF0\x80\x80\x00";
-  Value::fromDynamic(ctx, dyn);
-  Value(ctx, Value::fromDynamic(ctx, dyn)).toJSONString();
-  JSC_JSGlobalContextRelease(ctx);
-}
-
-// Just test that handling invalid data doesn't crash.
-TEST(Value, BadUtf16) {
-  prepare();
-  JSGlobalContextRef ctx = JSC_JSGlobalContextCreateInGroup(false, nullptr, nullptr);
-  UChar buf[] = { 0xDD00, 0xDD00, 0xDD00, 0x1111 };
-  JSStringRef ref = OpaqueJSString::create(buf, 4).leakRef();
-  Value v(ctx, ref);
-  v.toJSONString(0);
-  JSC_JSGlobalContextRelease(ctx);
-}
-#endif
diff --git a/ReactCommon/fabric/attributedstring/AttributedString.cpp b/ReactCommon/fabric/attributedstring/AttributedString.cpp
index 094b28ed074fe4..e2b3134501689f 100644
--- a/ReactCommon/fabric/attributedstring/AttributedString.cpp
+++ b/ReactCommon/fabric/attributedstring/AttributedString.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #include "AttributedString.h"
 
-#include <fabric/debug/DebugStringConvertibleItem.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 
 namespace facebook {
 namespace react {
@@ -15,6 +15,23 @@ namespace react {
 using Fragment = AttributedString::Fragment;
 using Fragments = AttributedString::Fragments;
 
+#pragma mark - Fragment
+
+bool Fragment::operator==(const Fragment &rhs) const {
+  return std::tie(string, textAttributes, shadowNode, parentShadowNode) ==
+      std::tie(
+             rhs.string,
+             rhs.textAttributes,
+             rhs.shadowNode,
+             rhs.parentShadowNode);
+}
+
+bool Fragment::operator!=(const Fragment &rhs) const {
+  return !(*this == rhs);
+}
+
+#pragma mark - AttributedString
+
 void AttributedString::appendFragment(const Fragment &fragment) {
   ensureUnsealed();
   fragments_.push_back(fragment);
@@ -25,14 +42,22 @@ void AttributedString::prependFragment(const Fragment &fragment) {
   fragments_.insert(fragments_.begin(), fragment);
 }
 
-void AttributedString::appendAttributedString(const AttributedString &attributedString) {
+void AttributedString::appendAttributedString(
+    const AttributedString &attributedString) {
   ensureUnsealed();
-  fragments_.insert(fragments_.end(), attributedString.fragments_.begin(), attributedString.fragments_.end());
+  fragments_.insert(
+      fragments_.end(),
+      attributedString.fragments_.begin(),
+      attributedString.fragments_.end());
 }
 
-void AttributedString::prependAttributedString(const AttributedString &attributedString) {
+void AttributedString::prependAttributedString(
+    const AttributedString &attributedString) {
   ensureUnsealed();
-  fragments_.insert(fragments_.begin(), attributedString.fragments_.begin(), attributedString.fragments_.end());
+  fragments_.insert(
+      fragments_.begin(),
+      attributedString.fragments_.begin(),
+      attributedString.fragments_.end());
 }
 
 const std::vector<Fragment> &AttributedString::getFragments() const {
@@ -40,37 +65,46 @@ const std::vector<Fragment> &AttributedString::getFragments() const {
 }
 
 std::string AttributedString::getString() const {
-  std::string string;
+  auto string = std::string{};
   for (const auto &fragment : fragments_) {
     string += fragment.string;
   }
   return string;
 }
 
+bool AttributedString::operator==(const AttributedString &rhs) const {
+  return fragments_ == rhs.fragments_;
+}
+
+bool AttributedString::operator!=(const AttributedString &rhs) const {
+  return !(*this == rhs);
+}
+
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList AttributedString::getDebugChildren() const {
-  SharedDebugStringConvertibleList list = {};
+  auto list = SharedDebugStringConvertibleList{};
 
   for (auto &&fragment : fragments_) {
-    auto propsList = fragment.textAttributes.DebugStringConvertible::getDebugProps();
+    auto propsList =
+        fragment.textAttributes.DebugStringConvertible::getDebugProps();
 
     if (fragment.shadowNode) {
-      propsList.push_back(std::make_shared<DebugStringConvertibleItem>("shadowNode", fragment.shadowNode->getDebugDescription()));
+      propsList.push_back(std::make_shared<DebugStringConvertibleItem>(
+          "shadowNode", fragment.shadowNode->getDebugDescription()));
     }
 
-    list.push_back(
-      std::make_shared<DebugStringConvertibleItem>(
+    list.push_back(std::make_shared<DebugStringConvertibleItem>(
         "Fragment",
         fragment.string,
         SharedDebugStringConvertibleList(),
-        propsList
-      )
-    );
+        propsList));
   }
 
   return list;
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/attributedstring/AttributedString.h b/ReactCommon/fabric/attributedstring/AttributedString.h
index 560560cebbcfcb..16c97508500d2c 100644
--- a/ReactCommon/fabric/attributedstring/AttributedString.h
+++ b/ReactCommon/fabric/attributedstring/AttributedString.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,14 @@
 
 #pragma once
 
+#include <functional>
 #include <memory>
 
-#include <fabric/attributedstring/TextAttributes.h>
-#include <fabric/core/Sealable.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/debug/DebugStringConvertible.h>
 #include <folly/Optional.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/core/Sealable.h>
+#include <react/core/ShadowNode.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -28,17 +29,17 @@ using SharedAttributedString = std::shared_ptr<const AttributedString>;
  * `AttributedString` is basically a list of `Fragments` which have `string` and
  * `textAttributes` + `shadowNode` associated with the `string`.
  */
-class AttributedString:
-  public Sealable,
-  public DebugStringConvertible {
-
-public:
-
+class AttributedString : public Sealable, public DebugStringConvertible {
+ public:
   class Fragment {
-  public:
+   public:
     std::string string;
     TextAttributes textAttributes;
     SharedShadowNode shadowNode;
+    SharedShadowNode parentShadowNode;
+
+    bool operator==(const Fragment &rhs) const;
+    bool operator!=(const Fragment &rhs) const;
   };
 
   using Fragments = std::vector<Fragment>;
@@ -66,14 +67,48 @@ class AttributedString:
    */
   std::string getString() const;
 
+  bool operator==(const AttributedString &rhs) const;
+  bool operator!=(const AttributedString &rhs) const;
+
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugChildren() const override;
+#endif
 
-private:
-
+ private:
   Fragments fragments_;
 };
 
 } // namespace react
 } // namespace facebook
+
+namespace std {
+template <>
+struct hash<facebook::react::AttributedString::Fragment> {
+  size_t operator()(
+      const facebook::react::AttributedString::Fragment &fragment) const {
+    return std::hash<decltype(fragment.string)>{}(fragment.string) +
+        std::hash<decltype(fragment.textAttributes)>{}(
+               fragment.textAttributes) +
+        std::hash<decltype(fragment.shadowNode)>{}(fragment.shadowNode) +
+        std::hash<decltype(fragment.parentShadowNode)>{}(
+               fragment.parentShadowNode);
+  }
+};
+
+template <>
+struct hash<facebook::react::AttributedString> {
+  size_t operator()(
+      const facebook::react::AttributedString &attributedString) const {
+    auto result = size_t{0};
+
+    for (const auto &fragment : attributedString.getFragments()) {
+      result +=
+          std::hash<facebook::react::AttributedString::Fragment>{}(fragment);
+    }
+
+    return result;
+  }
+};
+} // namespace std
diff --git a/ReactCommon/fabric/attributedstring/BUCK b/ReactCommon/fabric/attributedstring/BUCK
index 0be5eb78c18cbb..ba7ffd7ef3ed29 100644
--- a/ReactCommon/fabric/attributedstring/BUCK
+++ b/ReactCommon/fabric/attributedstring/BUCK
@@ -1,14 +1,14 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
+    "fb_xplat_cxx_test",
+    "get_apple_compiler_flags",
     "get_apple_inspector_flags",
     "react_native_xplat_target",
-    "get_apple_compiler_flags",
-    "subdir_glob",
-    "fb_xplat_cxx_test",
     "rn_xplat_cxx_library",
+    "subdir_glob",
 )
 
 APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
@@ -28,7 +28,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/attributedstring",
+        prefix = "react/attributedstring",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -73,7 +73,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/attributedstring/ParagraphAttributes.cpp b/ReactCommon/fabric/attributedstring/ParagraphAttributes.cpp
index 53550b6db4e0f4..00f216f9dfed51 100644
--- a/ReactCommon/fabric/attributedstring/ParagraphAttributes.cpp
+++ b/ReactCommon/fabric/attributedstring/ParagraphAttributes.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,24 +7,25 @@
 
 #include "ParagraphAttributes.h"
 
-#include <fabric/attributedstring/conversions.h>
-#include <fabric/graphics/conversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/attributedstring/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList ParagraphAttributes::getDebugProps() const {
   return {
-    debugStringConvertibleItem("maximumNumberOfLines", maximumNumberOfLines),
-    debugStringConvertibleItem("ellipsizeMode", ellipsizeMode),
-    debugStringConvertibleItem("adjustsFontSizeToFit", adjustsFontSizeToFit),
-    debugStringConvertibleItem("minimumFontSize", minimumFontSize),
-    debugStringConvertibleItem("maximumFontSize", maximumFontSize)
-  };
+      debugStringConvertibleItem("maximumNumberOfLines", maximumNumberOfLines),
+      debugStringConvertibleItem("ellipsizeMode", ellipsizeMode),
+      debugStringConvertibleItem("adjustsFontSizeToFit", adjustsFontSizeToFit),
+      debugStringConvertibleItem("minimumFontSize", minimumFontSize),
+      debugStringConvertibleItem("maximumFontSize", maximumFontSize)};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/attributedstring/ParagraphAttributes.h b/ReactCommon/fabric/attributedstring/ParagraphAttributes.h
index 9feaea20b50c26..2c9a0dc7198317 100644
--- a/ReactCommon/fabric/attributedstring/ParagraphAttributes.h
+++ b/ReactCommon/fabric/attributedstring/ParagraphAttributes.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <limits>
 
-#include <fabric/attributedstring/primitives.h>
-#include <fabric/debug/DebugStringConvertible.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/attributedstring/primitives.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -25,40 +25,39 @@ using SharedParagraphAttributes = std::shared_ptr<const ParagraphAttributes>;
  * Two data structures, ParagraphAttributes and AttributedText, should be
  * enough to define visual representation of a piece of text on the screen.
  */
-class ParagraphAttributes:
-  public DebugStringConvertible {
-
-public:
-
+class ParagraphAttributes : public DebugStringConvertible {
+ public:
 #pragma mark - Fields
 
   /*
    * Maximum number of lines which paragraph can take.
    * Zero value represents "no limit".
    */
-  int maximumNumberOfLines {};
+  int maximumNumberOfLines{};
 
   /*
    * In case if a text cannot fit given boundaries, defines a place where
    * an ellipsize should be placed.
    */
-  EllipsizeMode ellipsizeMode {};
+  EllipsizeMode ellipsizeMode{};
 
   /*
    * Enables font size adjustment to fit constrained boundaries.
    */
-  bool adjustsFontSizeToFit {};
+  bool adjustsFontSizeToFit{};
 
   /*
    * In case of font size adjustment enabled, defines minimum and maximum
    * font sizes.
    */
-  Float minimumFontSize {std::numeric_limits<Float>::quiet_NaN()};
-  Float maximumFontSize {std::numeric_limits<Float>::quiet_NaN()};
+  Float minimumFontSize{std::numeric_limits<Float>::quiet_NaN()};
+  Float maximumFontSize{std::numeric_limits<Float>::quiet_NaN()};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/attributedstring/TextAttributes.cpp b/ReactCommon/fabric/attributedstring/TextAttributes.cpp
index 1a5528182ec799..480dd012eb429e 100644
--- a/ReactCommon/fabric/attributedstring/TextAttributes.cpp
+++ b/ReactCommon/fabric/attributedstring/TextAttributes.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,92 +7,208 @@
 
 #include "TextAttributes.h"
 
-#include <fabric/attributedstring/conversions.h>
-#include <fabric/core/conversions.h>
-#include <fabric/graphics/conversions.h>
+#include <react/attributedstring/conversions.h>
+#include <react/core/conversions.h>
+#include <react/graphics/conversions.h>
+#include <cmath>
 
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
 void TextAttributes::apply(TextAttributes textAttributes) {
   // Color
-  foregroundColor = textAttributes.foregroundColor ? textAttributes.foregroundColor : foregroundColor;
-  backgroundColor = textAttributes.backgroundColor ? textAttributes.backgroundColor : backgroundColor;
-  opacity = !isnan(textAttributes.opacity) ? textAttributes.opacity : opacity;
+  foregroundColor = textAttributes.foregroundColor
+      ? textAttributes.foregroundColor
+      : foregroundColor;
+  backgroundColor = textAttributes.backgroundColor
+      ? textAttributes.backgroundColor
+      : backgroundColor;
+  opacity =
+      !std::isnan(textAttributes.opacity) ? textAttributes.opacity : opacity;
 
   // Font
-  fontFamily = !textAttributes.fontFamily.empty() ? textAttributes.fontFamily : fontFamily;
-  fontSize = !isnan(textAttributes.fontSize) ? textAttributes.fontSize : fontSize;
-  fontSizeMultiplier = !isnan(textAttributes.fontSizeMultiplier) ? textAttributes.fontSizeMultiplier : fontSizeMultiplier;
-  fontWeight = textAttributes.fontWeight.hasValue() ? textAttributes.fontWeight : fontWeight;
-  fontStyle = textAttributes.fontStyle.hasValue() ? textAttributes.fontStyle : fontStyle;
-  fontVariant = textAttributes.fontVariant.hasValue() ? textAttributes.fontVariant : fontVariant;
-  allowFontScaling = textAttributes.allowFontScaling.hasValue() ? textAttributes.allowFontScaling : allowFontScaling;
-  letterSpacing = !isnan(textAttributes.letterSpacing) ? textAttributes.letterSpacing : letterSpacing;
+  fontFamily = !textAttributes.fontFamily.empty() ? textAttributes.fontFamily
+                                                  : fontFamily;
+  fontSize =
+      !std::isnan(textAttributes.fontSize) ? textAttributes.fontSize : fontSize;
+  fontSizeMultiplier = !std::isnan(textAttributes.fontSizeMultiplier)
+      ? textAttributes.fontSizeMultiplier
+      : fontSizeMultiplier;
+  fontWeight = textAttributes.fontWeight.hasValue() ? textAttributes.fontWeight
+                                                    : fontWeight;
+  fontStyle = textAttributes.fontStyle.hasValue() ? textAttributes.fontStyle
+                                                  : fontStyle;
+  fontVariant = textAttributes.fontVariant.hasValue()
+      ? textAttributes.fontVariant
+      : fontVariant;
+  allowFontScaling = textAttributes.allowFontScaling.hasValue()
+      ? textAttributes.allowFontScaling
+      : allowFontScaling;
+  letterSpacing = !std::isnan(textAttributes.letterSpacing)
+      ? textAttributes.letterSpacing
+      : letterSpacing;
 
   // Paragraph Styles
-  lineHeight = !isnan(textAttributes.lineHeight) ? textAttributes.lineHeight : lineHeight;
-  alignment = textAttributes.alignment.hasValue() ? textAttributes.alignment : alignment;
-  baseWritingDirection = textAttributes.baseWritingDirection.hasValue() ? textAttributes.baseWritingDirection : baseWritingDirection;
+  lineHeight = !std::isnan(textAttributes.lineHeight)
+      ? textAttributes.lineHeight
+      : lineHeight;
+  alignment = textAttributes.alignment.hasValue() ? textAttributes.alignment
+                                                  : alignment;
+  baseWritingDirection = textAttributes.baseWritingDirection.hasValue()
+      ? textAttributes.baseWritingDirection
+      : baseWritingDirection;
 
   // Decoration
-  textDecorationColor = textAttributes.textDecorationColor ? textAttributes.textDecorationColor : textDecorationColor;
-  textDecorationLineType = textAttributes.textDecorationLineType.hasValue() ? textAttributes.textDecorationLineType : textDecorationLineType;
-  textDecorationLineStyle = textAttributes.textDecorationLineStyle.hasValue() ? textAttributes.textDecorationLineStyle : textDecorationLineStyle;
-  textDecorationLinePattern = textAttributes.textDecorationLinePattern.hasValue() ? textAttributes.textDecorationLinePattern : textDecorationLinePattern;
+  textDecorationColor = textAttributes.textDecorationColor
+      ? textAttributes.textDecorationColor
+      : textDecorationColor;
+  textDecorationLineType = textAttributes.textDecorationLineType.hasValue()
+      ? textAttributes.textDecorationLineType
+      : textDecorationLineType;
+  textDecorationLineStyle = textAttributes.textDecorationLineStyle.hasValue()
+      ? textAttributes.textDecorationLineStyle
+      : textDecorationLineStyle;
+  textDecorationLinePattern =
+      textAttributes.textDecorationLinePattern.hasValue()
+      ? textAttributes.textDecorationLinePattern
+      : textDecorationLinePattern;
 
   // Shadow
-  textShadowOffset = textAttributes.textShadowOffset.hasValue() ? textAttributes.textShadowOffset.value() : textShadowOffset;
-  textShadowRadius = !isnan(textAttributes.textShadowRadius) ? textAttributes.textShadowRadius : textShadowRadius;
-  textShadowColor = textAttributes.textShadowColor ? textAttributes.textShadowColor : textShadowColor;
+  textShadowOffset = textAttributes.textShadowOffset.hasValue()
+      ? textAttributes.textShadowOffset.value()
+      : textShadowOffset;
+  textShadowRadius = !std::isnan(textAttributes.textShadowRadius)
+      ? textAttributes.textShadowRadius
+      : textShadowRadius;
+  textShadowColor = textAttributes.textShadowColor
+      ? textAttributes.textShadowColor
+      : textShadowColor;
 
   // Special
-  isHighlighted = textAttributes.isHighlighted.hasValue() ? textAttributes.isHighlighted : isHighlighted;
-  layoutDirection = textAttributes.layoutDirection.hasValue() ? textAttributes.layoutDirection : layoutDirection;
+  isHighlighted = textAttributes.isHighlighted.hasValue()
+      ? textAttributes.isHighlighted
+      : isHighlighted;
+  layoutDirection = textAttributes.layoutDirection.hasValue()
+      ? textAttributes.layoutDirection
+      : layoutDirection;
+}
+
+#pragma mark - Operators
+
+bool TextAttributes::operator==(const TextAttributes &rhs) const {
+  return std::tie(
+             foregroundColor,
+             backgroundColor,
+             opacity,
+             fontFamily,
+             fontSize,
+             fontSizeMultiplier,
+             fontWeight,
+             fontStyle,
+             fontVariant,
+             allowFontScaling,
+             letterSpacing,
+             lineHeight,
+             alignment,
+             baseWritingDirection,
+             textDecorationColor,
+             textDecorationLineType,
+             textDecorationLineStyle,
+             textDecorationLinePattern,
+             textShadowOffset,
+             textShadowRadius,
+             textShadowColor,
+             isHighlighted,
+             layoutDirection) ==
+      std::tie(
+             rhs.foregroundColor,
+             rhs.backgroundColor,
+             rhs.opacity,
+             rhs.fontFamily,
+             rhs.fontSize,
+             rhs.fontSizeMultiplier,
+             rhs.fontWeight,
+             rhs.fontStyle,
+             rhs.fontVariant,
+             rhs.allowFontScaling,
+             rhs.letterSpacing,
+             rhs.lineHeight,
+             rhs.alignment,
+             rhs.baseWritingDirection,
+             rhs.textDecorationColor,
+             rhs.textDecorationLineType,
+             rhs.textDecorationLineStyle,
+             rhs.textDecorationLinePattern,
+             rhs.textShadowOffset,
+             rhs.textShadowRadius,
+             rhs.textShadowColor,
+             rhs.isHighlighted,
+             rhs.layoutDirection);
+}
+
+bool TextAttributes::operator!=(const TextAttributes &rhs) const {
+  return !(*this == rhs);
+}
+
+TextAttributes TextAttributes::defaultTextAttributes() {
+  static auto textAttributes = [] {
+    auto textAttributes = TextAttributes{};
+    // Non-obvious (can be different among platforms) default text attributes.
+    textAttributes.foregroundColor = blackColor();
+    textAttributes.backgroundColor = clearColor();
+    textAttributes.fontSize = 14.0;
+    return textAttributes;
+  }();
+  return textAttributes;
 }
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList TextAttributes::getDebugProps() const {
   return {
-    // Color
-    debugStringConvertibleItem("backgroundColor", backgroundColor),
-    debugStringConvertibleItem("foregroundColor", foregroundColor),
-    debugStringConvertibleItem("opacity", opacity),
-
-    // Font
-    debugStringConvertibleItem("fontFamily", fontFamily),
-    debugStringConvertibleItem("fontSize", fontSize),
-    debugStringConvertibleItem("fontSizeMultiplier", fontSizeMultiplier),
-    debugStringConvertibleItem("fontWeight", fontWeight),
-    debugStringConvertibleItem("fontStyle", fontStyle),
-    debugStringConvertibleItem("fontVariant", fontVariant),
-    debugStringConvertibleItem("allowFontScaling", allowFontScaling),
-    debugStringConvertibleItem("letterSpacing", letterSpacing),
-
-    // Paragraph Styles
-    debugStringConvertibleItem("lineHeight", lineHeight),
-    debugStringConvertibleItem("alignment", alignment),
-    debugStringConvertibleItem("baseWritingDirection", baseWritingDirection),
-
-    // Decoration
-    debugStringConvertibleItem("textDecorationColor", textDecorationColor),
-    debugStringConvertibleItem("textDecorationLineType", textDecorationLineType),
-    debugStringConvertibleItem("textDecorationLineStyle", textDecorationLineStyle),
-    debugStringConvertibleItem("textDecorationLinePattern", textDecorationLinePattern),
-
-    // Shadow
-    debugStringConvertibleItem("textShadowOffset", textShadowOffset),
-    debugStringConvertibleItem("textShadowRadius", textShadowRadius),
-    debugStringConvertibleItem("textShadowColor", textShadowColor),
-
-    // Special
-    debugStringConvertibleItem("isHighlighted", isHighlighted),
-    debugStringConvertibleItem("layoutDirection", layoutDirection),
+      // Color
+      debugStringConvertibleItem("backgroundColor", backgroundColor),
+      debugStringConvertibleItem("foregroundColor", foregroundColor),
+      debugStringConvertibleItem("opacity", opacity),
+
+      // Font
+      debugStringConvertibleItem("fontFamily", fontFamily),
+      debugStringConvertibleItem("fontSize", fontSize),
+      debugStringConvertibleItem("fontSizeMultiplier", fontSizeMultiplier),
+      debugStringConvertibleItem("fontWeight", fontWeight),
+      debugStringConvertibleItem("fontStyle", fontStyle),
+      debugStringConvertibleItem("fontVariant", fontVariant),
+      debugStringConvertibleItem("allowFontScaling", allowFontScaling),
+      debugStringConvertibleItem("letterSpacing", letterSpacing),
+
+      // Paragraph Styles
+      debugStringConvertibleItem("lineHeight", lineHeight),
+      debugStringConvertibleItem("alignment", alignment),
+      debugStringConvertibleItem("baseWritingDirection", baseWritingDirection),
+
+      // Decoration
+      debugStringConvertibleItem("textDecorationColor", textDecorationColor),
+      debugStringConvertibleItem(
+          "textDecorationLineType", textDecorationLineType),
+      debugStringConvertibleItem(
+          "textDecorationLineStyle", textDecorationLineStyle),
+      debugStringConvertibleItem(
+          "textDecorationLinePattern", textDecorationLinePattern),
+
+      // Shadow
+      debugStringConvertibleItem("textShadowOffset", textShadowOffset),
+      debugStringConvertibleItem("textShadowRadius", textShadowRadius),
+      debugStringConvertibleItem("textShadowColor", textShadowColor),
+
+      // Special
+      debugStringConvertibleItem("isHighlighted", isHighlighted),
+      debugStringConvertibleItem("layoutDirection", layoutDirection),
   };
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/attributedstring/TextAttributes.h b/ReactCommon/fabric/attributedstring/TextAttributes.h
index 2b8c049821975f..6340143d9c745a 100644
--- a/ReactCommon/fabric/attributedstring/TextAttributes.h
+++ b/ReactCommon/fabric/attributedstring/TextAttributes.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,15 +7,16 @@
 
 #pragma once
 
+#include <functional>
 #include <limits>
 
-#include <fabric/attributedstring/primitives.h>
-#include <fabric/core/LayoutPrimitives.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/debug/DebugStringConvertible.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/graphics/Geometry.h>
 #include <folly/Optional.h>
+#include <react/attributedstring/primitives.h>
+#include <react/core/LayoutPrimitives.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -24,57 +25,122 @@ class TextAttributes;
 
 using SharedTextAttributes = std::shared_ptr<const TextAttributes>;
 
-class TextAttributes:
-  public DebugStringConvertible {
-public:
+class TextAttributes : public DebugStringConvertible {
+ public:
+  /*
+   * Returns TextAttribute object which has actual default attribute values
+   * (e.g. `foregroundColor = black`), in oppose to TextAttribute's default
+   * constructor which creates an object with nulled attributes.
+   */
+  static TextAttributes defaultTextAttributes();
 
 #pragma mark - Fields
 
   // Color
-  SharedColor foregroundColor {};
-  SharedColor backgroundColor {};
-  Float opacity {std::numeric_limits<Float>::quiet_NaN()};
+  SharedColor foregroundColor{};
+  SharedColor backgroundColor{};
+  Float opacity{std::numeric_limits<Float>::quiet_NaN()};
 
   // Font
-  std::string fontFamily {""};
-  Float fontSize {std::numeric_limits<Float>::quiet_NaN()};
-  Float fontSizeMultiplier {std::numeric_limits<Float>::quiet_NaN()};
-  folly::Optional<FontWeight> fontWeight {};
-  folly::Optional<FontStyle> fontStyle {};
-  folly::Optional<FontVariant> fontVariant {};
-  folly::Optional<bool> allowFontScaling {};
-  Float letterSpacing {std::numeric_limits<Float>::quiet_NaN()};
+  std::string fontFamily{""};
+  Float fontSize{std::numeric_limits<Float>::quiet_NaN()};
+  Float fontSizeMultiplier{std::numeric_limits<Float>::quiet_NaN()};
+  folly::Optional<FontWeight> fontWeight{};
+  folly::Optional<FontStyle> fontStyle{};
+  folly::Optional<FontVariant> fontVariant{};
+  folly::Optional<bool> allowFontScaling{};
+  Float letterSpacing{std::numeric_limits<Float>::quiet_NaN()};
 
   // Paragraph Styles
-  Float lineHeight {std::numeric_limits<Float>::quiet_NaN()};
-  folly::Optional<TextAlignment> alignment {};
-  folly::Optional<WritingDirection> baseWritingDirection {};
+  Float lineHeight{std::numeric_limits<Float>::quiet_NaN()};
+  folly::Optional<TextAlignment> alignment{};
+  folly::Optional<WritingDirection> baseWritingDirection{};
 
   // Decoration
-  SharedColor textDecorationColor {};
-  folly::Optional<TextDecorationLineType> textDecorationLineType {};
-  folly::Optional<TextDecorationLineStyle> textDecorationLineStyle {};
-  folly::Optional<TextDecorationLinePattern> textDecorationLinePattern {};
+  SharedColor textDecorationColor{};
+  folly::Optional<TextDecorationLineType> textDecorationLineType{};
+  folly::Optional<TextDecorationLineStyle> textDecorationLineStyle{};
+  folly::Optional<TextDecorationLinePattern> textDecorationLinePattern{};
 
   // Shadow
   // TODO: Use `Point` type instead of `Size` for `textShadowOffset` attribute.
-  folly::Optional<Size> textShadowOffset {};
-  Float textShadowRadius {std::numeric_limits<Float>::quiet_NaN()};
-  SharedColor textShadowColor {};
+  folly::Optional<Size> textShadowOffset{};
+  Float textShadowRadius{std::numeric_limits<Float>::quiet_NaN()};
+  SharedColor textShadowColor{};
 
   // Special
-  folly::Optional<bool> isHighlighted {};
-  folly::Optional<LayoutDirection> layoutDirection {};
+  folly::Optional<bool> isHighlighted{};
+  folly::Optional<LayoutDirection> layoutDirection{};
 
 #pragma mark - Operations
 
   void apply(TextAttributes textAttributes);
 
+#pragma mark - Operators
+
+  bool operator==(const TextAttributes &rhs) const;
+  bool operator!=(const TextAttributes &rhs) const;
+
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
 } // namespace facebook
 
+namespace std {
+template <>
+struct hash<facebook::react::TextAttributes> {
+  size_t operator()(
+      const facebook::react::TextAttributes &textAttributes) const {
+    return std::hash<decltype(textAttributes.foregroundColor)>{}(
+               textAttributes.foregroundColor) +
+        std::hash<decltype(textAttributes.backgroundColor)>{}(
+               textAttributes.backgroundColor) +
+        std::hash<decltype(textAttributes.opacity)>{}(textAttributes.opacity) +
+        std::hash<decltype(textAttributes.fontFamily)>{}(
+               textAttributes.fontFamily) +
+        std::hash<decltype(textAttributes.fontSize)>{}(
+               textAttributes.fontSize) +
+        std::hash<decltype(textAttributes.fontSizeMultiplier)>{}(
+               textAttributes.fontSizeMultiplier) +
+        std::hash<decltype(textAttributes.fontWeight)>{}(
+               textAttributes.fontWeight) +
+        std::hash<decltype(textAttributes.fontStyle)>{}(
+               textAttributes.fontStyle) +
+        std::hash<decltype(textAttributes.fontVariant)>{}(
+               textAttributes.fontVariant) +
+        std::hash<decltype(textAttributes.allowFontScaling)>{}(
+               textAttributes.allowFontScaling) +
+        std::hash<decltype(textAttributes.letterSpacing)>{}(
+               textAttributes.letterSpacing) +
+        std::hash<decltype(textAttributes.lineHeight)>{}(
+               textAttributes.lineHeight) +
+        std::hash<decltype(textAttributes.alignment)>{}(
+               textAttributes.alignment) +
+        std::hash<decltype(textAttributes.baseWritingDirection)>{}(
+               textAttributes.baseWritingDirection) +
+        std::hash<decltype(textAttributes.textDecorationColor)>{}(
+               textAttributes.textDecorationColor) +
+        std::hash<decltype(textAttributes.textDecorationLineType)>{}(
+               textAttributes.textDecorationLineType) +
+        std::hash<decltype(textAttributes.textDecorationLineStyle)>{}(
+               textAttributes.textDecorationLineStyle) +
+        std::hash<decltype(textAttributes.textDecorationLinePattern)>{}(
+               textAttributes.textDecorationLinePattern) +
+        std::hash<decltype(textAttributes.textShadowOffset)>{}(
+               textAttributes.textShadowOffset) +
+        std::hash<decltype(textAttributes.textShadowRadius)>{}(
+               textAttributes.textShadowRadius) +
+        std::hash<decltype(textAttributes.textShadowColor)>{}(
+               textAttributes.textShadowColor) +
+        std::hash<decltype(textAttributes.isHighlighted)>{}(
+               textAttributes.isHighlighted) +
+        std::hash<decltype(textAttributes.layoutDirection)>{}(
+               textAttributes.layoutDirection);
+  }
+};
+} // namespace std
diff --git a/ReactCommon/fabric/attributedstring/conversions.h b/ReactCommon/fabric/attributedstring/conversions.h
index 7e63dc1a431c0f..66e4bbc41515da 100644
--- a/ReactCommon/fabric/attributedstring/conversions.h
+++ b/ReactCommon/fabric/attributedstring/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,45 +7,106 @@
 
 #pragma once
 
-#include <fabric/attributedstring/primitives.h>
-#include <fabric/graphics/Geometry.h>
 #include <folly/dynamic.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/ParagraphAttributes.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/attributedstring/conversions.h>
+#include <react/attributedstring/primitives.h>
+#include <react/core/LayoutableShadowNode.h>
+#include <react/core/ShadowNode.h>
+#include <react/core/conversions.h>
+#include <react/graphics/Geometry.h>
+#include <react/graphics/conversions.h>
+#include <cmath>
 
 namespace facebook {
 namespace react {
 
 inline std::string toString(const EllipsizeMode &ellipsisMode) {
   switch (ellipsisMode) {
-    case EllipsizeMode::Clip: return "clip";
-    case EllipsizeMode::Head: return "head";
-    case EllipsizeMode::Tail: return "tail";
-    case EllipsizeMode::Middle: return "middle";
+    case EllipsizeMode::Clip:
+      return "clip";
+    case EllipsizeMode::Head:
+      return "head";
+    case EllipsizeMode::Tail:
+      return "tail";
+    case EllipsizeMode::Middle:
+      return "middle";
   }
 }
 
 inline void fromDynamic(const folly::dynamic &value, EllipsizeMode &result) {
   auto string = value.getString();
-  if (string == "clip") { result = EllipsizeMode::Clip; return; }
-  if (string == "head") { result = EllipsizeMode::Head; return; }
-  if (string == "tail") { result = EllipsizeMode::Tail; return; }
-  if (string == "middle") { result = EllipsizeMode::Middle; return; }
+  if (string == "clip") {
+    result = EllipsizeMode::Clip;
+    return;
+  }
+  if (string == "head") {
+    result = EllipsizeMode::Head;
+    return;
+  }
+  if (string == "tail") {
+    result = EllipsizeMode::Tail;
+    return;
+  }
+  if (string == "middle") {
+    result = EllipsizeMode::Middle;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, FontWeight &result) {
   auto string = value.asString();
-  if (string == "normal") { result = FontWeight::Regular; return; }
-  if (string == "regular") { result = FontWeight::Regular; return; }
-  if (string == "bold") { result = FontWeight::Bold; return; }
-  if (string == "100") { result = FontWeight::Weight100; return; }
-  if (string == "200") { result = FontWeight::Weight200; return; }
-  if (string == "300") { result = FontWeight::Weight300; return; }
-  if (string == "400") { result = FontWeight::Weight400; return; }
-  if (string == "500") { result = FontWeight::Weight500; return; }
-  if (string == "600") { result = FontWeight::Weight600; return; }
-  if (string == "700") { result = FontWeight::Weight700; return; }
-  if (string == "800") { result = FontWeight::Weight800; return; }
-  if (string == "900") { result = FontWeight::Weight900; return; }
+  if (string == "normal") {
+    result = FontWeight::Regular;
+    return;
+  }
+  if (string == "regular") {
+    result = FontWeight::Regular;
+    return;
+  }
+  if (string == "bold") {
+    result = FontWeight::Bold;
+    return;
+  }
+  if (string == "100") {
+    result = FontWeight::Weight100;
+    return;
+  }
+  if (string == "200") {
+    result = FontWeight::Weight200;
+    return;
+  }
+  if (string == "300") {
+    result = FontWeight::Weight300;
+    return;
+  }
+  if (string == "400") {
+    result = FontWeight::Weight400;
+    return;
+  }
+  if (string == "500") {
+    result = FontWeight::Weight500;
+    return;
+  }
+  if (string == "600") {
+    result = FontWeight::Weight600;
+    return;
+  }
+  if (string == "700") {
+    result = FontWeight::Weight700;
+    return;
+  }
+  if (string == "800") {
+    result = FontWeight::Weight800;
+    return;
+  }
+  if (string == "900") {
+    result = FontWeight::Weight900;
+    return;
+  }
   abort();
 }
 
@@ -55,17 +116,29 @@ inline std::string toString(const FontWeight &fontWeight) {
 
 inline void fromDynamic(const folly::dynamic &value, FontStyle &result) {
   auto string = value.asString();
-  if (string == "normal") { result = FontStyle::Normal; return; }
-  if (string == "italic") { result = FontStyle::Italic; return; }
-  if (string == "oblique") { result = FontStyle::Oblique; return; }
+  if (string == "normal") {
+    result = FontStyle::Normal;
+    return;
+  }
+  if (string == "italic") {
+    result = FontStyle::Italic;
+    return;
+  }
+  if (string == "oblique") {
+    result = FontStyle::Oblique;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const FontStyle &fontStyle) {
   switch (fontStyle) {
-    case FontStyle::Normal: return "normal";
-    case FontStyle::Italic: return "italic";
-    case FontStyle::Oblique: return "oblique";
+    case FontStyle::Normal:
+      return "normal";
+    case FontStyle::Italic:
+      return "italic";
+    case FontStyle::Oblique:
+      return "oblique";
   }
 }
 
@@ -74,22 +147,47 @@ inline void fromDynamic(const folly::dynamic &value, FontVariant &result) {
   result = FontVariant::Default;
   for (auto &&item : value) {
     auto string = item.asString();
-    if (string == "small-caps") { result = (FontVariant)((int)result | (int)FontVariant::SmallCaps); continue; }
-    if (string == "oldstyle-nums") { result = (FontVariant)((int)result | (int)FontVariant::OldstyleNums); continue; }
-    if (string == "lining-nums") { result = (FontVariant)((int)result | (int)FontVariant::LiningNums); continue; }
-    if (string == "tabular-nums") { result = (FontVariant)((int)result | (int)FontVariant::TabularNums); continue; }
-    if (string == "proportional-nums") { result = (FontVariant)((int)result | (int)FontVariant::ProportionalNums); continue; }
+    if (string == "small-caps") {
+      result = (FontVariant)((int)result | (int)FontVariant::SmallCaps);
+      continue;
+    }
+    if (string == "oldstyle-nums") {
+      result = (FontVariant)((int)result | (int)FontVariant::OldstyleNums);
+      continue;
+    }
+    if (string == "lining-nums") {
+      result = (FontVariant)((int)result | (int)FontVariant::LiningNums);
+      continue;
+    }
+    if (string == "tabular-nums") {
+      result = (FontVariant)((int)result | (int)FontVariant::TabularNums);
+      continue;
+    }
+    if (string == "proportional-nums") {
+      result = (FontVariant)((int)result | (int)FontVariant::ProportionalNums);
+      continue;
+    }
   }
 }
 
 inline std::string toString(const FontVariant &fontVariant) {
-  std::string result;
-  std::string separator = ", ";
-  if ((int)fontVariant & (int)FontVariant::SmallCaps) { result += "small-caps" + separator; }
-  if ((int)fontVariant & (int)FontVariant::OldstyleNums) { result += "oldstyle-nums" + separator; }
-  if ((int)fontVariant & (int)FontVariant::LiningNums) { result += "lining-nums" + separator; }
-  if ((int)fontVariant & (int)FontVariant::TabularNums) { result += "tabular-nums" + separator; }
-  if ((int)fontVariant & (int)FontVariant::ProportionalNums) { result += "proportional-nums" + separator; }
+  auto result = std::string{};
+  auto separator = std::string{", "};
+  if ((int)fontVariant & (int)FontVariant::SmallCaps) {
+    result += "small-caps" + separator;
+  }
+  if ((int)fontVariant & (int)FontVariant::OldstyleNums) {
+    result += "oldstyle-nums" + separator;
+  }
+  if ((int)fontVariant & (int)FontVariant::LiningNums) {
+    result += "lining-nums" + separator;
+  }
+  if ((int)fontVariant & (int)FontVariant::TabularNums) {
+    result += "tabular-nums" + separator;
+  }
+  if ((int)fontVariant & (int)FontVariant::ProportionalNums) {
+    result += "proportional-nums" + separator;
+  }
 
   if (!result.empty()) {
     result.erase(result.length() - separator.length());
@@ -100,92 +198,297 @@ inline std::string toString(const FontVariant &fontVariant) {
 
 inline void fromDynamic(const folly::dynamic &value, TextAlignment &result) {
   auto string = value.asString();
-  if (string == "natural") { result = TextAlignment::Natural; return; }
-  if (string == "left") { result = TextAlignment::Left; return; }
-  if (string == "center") { result = TextAlignment::Center; return; }
-  if (string == "right") { result = TextAlignment::Right; return; }
-  if (string == "justified") { result = TextAlignment::Justified; return; }
+  if (string == "natural") {
+    result = TextAlignment::Natural;
+    return;
+  }
+  if (string == "left") {
+    result = TextAlignment::Left;
+    return;
+  }
+  if (string == "center") {
+    result = TextAlignment::Center;
+    return;
+  }
+  if (string == "right") {
+    result = TextAlignment::Right;
+    return;
+  }
+  if (string == "justified") {
+    result = TextAlignment::Justified;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const TextAlignment &textAlignment) {
   switch (textAlignment) {
-    case TextAlignment::Natural: return "natural";
-    case TextAlignment::Left: return "left";
-    case TextAlignment::Center: return "center";
-    case TextAlignment::Right: return "right";
-    case TextAlignment::Justified: return "justified";
+    case TextAlignment::Natural:
+      return "natural";
+    case TextAlignment::Left:
+      return "left";
+    case TextAlignment::Center:
+      return "center";
+    case TextAlignment::Right:
+      return "right";
+    case TextAlignment::Justified:
+      return "justified";
   }
 }
 
 inline void fromDynamic(const folly::dynamic &value, WritingDirection &result) {
   auto string = value.asString();
-  if (string == "natural") { result = WritingDirection::Natural; return; }
-  if (string == "ltr") { result = WritingDirection::LeftToRight; return; }
-  if (string == "rtl") { result = WritingDirection::RightToLeft; return; }
+  if (string == "natural") {
+    result = WritingDirection::Natural;
+    return;
+  }
+  if (string == "ltr") {
+    result = WritingDirection::LeftToRight;
+    return;
+  }
+  if (string == "rtl") {
+    result = WritingDirection::RightToLeft;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const WritingDirection &writingDirection) {
   switch (writingDirection) {
-    case WritingDirection::Natural: return "natural";
-    case WritingDirection::LeftToRight: return "ltr";
-    case WritingDirection::RightToLeft: return "rtl";
+    case WritingDirection::Natural:
+      return "natural";
+    case WritingDirection::LeftToRight:
+      return "ltr";
+    case WritingDirection::RightToLeft:
+      return "rtl";
   }
 }
 
-inline void fromDynamic(const folly::dynamic &value, TextDecorationLineType &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    TextDecorationLineType &result) {
   auto string = value.asString();
-  if (string == "none") { result = TextDecorationLineType::None; return; }
-  if (string == "underline") { result = TextDecorationLineType::Underline; return; }
-  if (string == "strikethrough") { result = TextDecorationLineType::Strikethrough; return; }
-  if (string == "underline-strikethrough") { result = TextDecorationLineType::UnderlineStrikethrough; return; }
+  if (string == "none") {
+    result = TextDecorationLineType::None;
+    return;
+  }
+  if (string == "underline") {
+    result = TextDecorationLineType::Underline;
+    return;
+  }
+  if (string == "strikethrough") {
+    result = TextDecorationLineType::Strikethrough;
+    return;
+  }
+  if (string == "underline-strikethrough") {
+    result = TextDecorationLineType::UnderlineStrikethrough;
+    return;
+  }
   abort();
 }
 
-inline std::string toString(const TextDecorationLineType &textDecorationLineType) {
+inline std::string toString(
+    const TextDecorationLineType &textDecorationLineType) {
   switch (textDecorationLineType) {
-    case TextDecorationLineType::None: return "none";
-    case TextDecorationLineType::Underline: return "underline";
-    case TextDecorationLineType::Strikethrough: return "strikethrough";
-    case TextDecorationLineType::UnderlineStrikethrough: return "underline-strikethrough";
+    case TextDecorationLineType::None:
+      return "none";
+    case TextDecorationLineType::Underline:
+      return "underline";
+    case TextDecorationLineType::Strikethrough:
+      return "strikethrough";
+    case TextDecorationLineType::UnderlineStrikethrough:
+      return "underline-strikethrough";
   }
 }
 
-inline void fromDynamic(const folly::dynamic &value, TextDecorationLineStyle &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    TextDecorationLineStyle &result) {
   auto string = value.asString();
-  if (string == "single") { result = TextDecorationLineStyle::Single; return; }
-  if (string == "thick") { result = TextDecorationLineStyle::Thick; return; }
-  if (string == "double") { result = TextDecorationLineStyle::Double; return; }
+  if (string == "single") {
+    result = TextDecorationLineStyle::Single;
+    return;
+  }
+  if (string == "thick") {
+    result = TextDecorationLineStyle::Thick;
+    return;
+  }
+  if (string == "double") {
+    result = TextDecorationLineStyle::Double;
+    return;
+  }
   abort();
 }
 
-inline std::string toString(const TextDecorationLineStyle &textDecorationLineStyle) {
+inline std::string toString(
+    const TextDecorationLineStyle &textDecorationLineStyle) {
   switch (textDecorationLineStyle) {
-    case TextDecorationLineStyle::Single: return "single";
-    case TextDecorationLineStyle::Thick: return "thick";
-    case TextDecorationLineStyle::Double: return "double";
+    case TextDecorationLineStyle::Single:
+      return "single";
+    case TextDecorationLineStyle::Thick:
+      return "thick";
+    case TextDecorationLineStyle::Double:
+      return "double";
   }
 }
 
-inline void fromDynamic(const folly::dynamic &value, TextDecorationLinePattern &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    TextDecorationLinePattern &result) {
   auto string = value.asString();
-  if (string == "solid") { result = TextDecorationLinePattern::Solid; return; }
-  if (string == "dot") { result = TextDecorationLinePattern::Dot; return; }
-  if (string == "dash") { result = TextDecorationLinePattern::Dash; return; }
-  if (string == "dash-dot") { result = TextDecorationLinePattern::DashDot; return; }
-  if (string == "dash-dot-dot") { result = TextDecorationLinePattern::DashDotDot; return; }
+  if (string == "solid") {
+    result = TextDecorationLinePattern::Solid;
+    return;
+  }
+  if (string == "dot") {
+    result = TextDecorationLinePattern::Dot;
+    return;
+  }
+  if (string == "dash") {
+    result = TextDecorationLinePattern::Dash;
+    return;
+  }
+  if (string == "dash-dot") {
+    result = TextDecorationLinePattern::DashDot;
+    return;
+  }
+  if (string == "dash-dot-dot") {
+    result = TextDecorationLinePattern::DashDotDot;
+    return;
+  }
   abort();
 }
 
-inline std::string toString(const TextDecorationLinePattern &textDecorationLinePattern) {
+inline std::string toString(
+    const TextDecorationLinePattern &textDecorationLinePattern) {
   switch (textDecorationLinePattern) {
-    case TextDecorationLinePattern::Solid: return "solid";
-    case TextDecorationLinePattern::Dot: return "dot";
-    case TextDecorationLinePattern::Dash: return "dash";
-    case TextDecorationLinePattern::DashDot: return "dash-dot";
-    case TextDecorationLinePattern::DashDotDot: return "dash-dot-dot";
+    case TextDecorationLinePattern::Solid:
+      return "solid";
+    case TextDecorationLinePattern::Dot:
+      return "dot";
+    case TextDecorationLinePattern::Dash:
+      return "dash";
+    case TextDecorationLinePattern::DashDot:
+      return "dash-dot";
+    case TextDecorationLinePattern::DashDotDot:
+      return "dash-dot-dot";
+  }
+}
+
+inline folly::dynamic toDynamic(
+    const ParagraphAttributes &paragraphAttributes) {
+  auto values = folly::dynamic::object();
+  values("maximumNumberOfLines", paragraphAttributes.maximumNumberOfLines);
+  values("ellipsizeMode", toString(paragraphAttributes.ellipsizeMode));
+  values("adjustsFontSizeToFit", paragraphAttributes.adjustsFontSizeToFit);
+  values("minimumFontSize", paragraphAttributes.minimumFontSize);
+  values("maximumFontSize", paragraphAttributes.maximumFontSize);
+  return values;
+}
+
+inline folly::dynamic toDynamic(const TextAttributes &textAttributes) {
+  auto _textAttributes = folly::dynamic::object();
+  if (textAttributes.foregroundColor) {
+    _textAttributes(
+        "foregroundColor", toDynamic(textAttributes.foregroundColor));
+  }
+  if (textAttributes.backgroundColor) {
+    _textAttributes(
+        "backgroundColor", toDynamic(textAttributes.backgroundColor));
+  }
+  if (!std::isnan(textAttributes.opacity)) {
+    _textAttributes("opacity", textAttributes.opacity);
+  }
+  if (!textAttributes.fontFamily.empty()) {
+    _textAttributes("fontFamily", textAttributes.fontFamily);
+  }
+  if (!std::isnan(textAttributes.fontSize)) {
+    _textAttributes("fontSize", textAttributes.fontSize);
+  }
+  if (!std::isnan(textAttributes.fontSizeMultiplier)) {
+    _textAttributes("fontSizeMultiplier", textAttributes.fontSizeMultiplier);
+  }
+  if (textAttributes.fontWeight.has_value()) {
+    _textAttributes("fontWeight", toString(*textAttributes.fontWeight));
+  }
+  if (textAttributes.fontStyle.has_value()) {
+    _textAttributes("fontStyle", toString(*textAttributes.fontStyle));
+  }
+  if (textAttributes.fontVariant.has_value()) {
+    _textAttributes("fontVariant", toString(*textAttributes.fontVariant));
+  }
+  if (textAttributes.allowFontScaling.has_value()) {
+    _textAttributes("allowFontScaling", *textAttributes.allowFontScaling);
+  }
+  if (!std::isnan(textAttributes.letterSpacing)) {
+    _textAttributes("letterSpacing", textAttributes.letterSpacing);
+  }
+  if (!std::isnan(textAttributes.lineHeight)) {
+    _textAttributes("lineHeight", textAttributes.lineHeight);
+  }
+  if (textAttributes.alignment.has_value()) {
+    _textAttributes("alignment", toString(*textAttributes.alignment));
+  }
+  if (textAttributes.baseWritingDirection.has_value()) {
+    _textAttributes(
+        "baseWritingDirection", toString(*textAttributes.baseWritingDirection));
+  }
+  // Decoration
+  if (textAttributes.textDecorationColor) {
+    _textAttributes(
+        "textDecorationColor", toDynamic(textAttributes.textDecorationColor));
+  }
+  if (textAttributes.textDecorationLineType.has_value()) {
+    _textAttributes(
+        "textDecorationLineType",
+        toString(*textAttributes.textDecorationLineType));
+  }
+  if (textAttributes.textDecorationLineStyle.has_value()) {
+    _textAttributes(
+        "textDecorationLineStyle",
+        toString(*textAttributes.textDecorationLineStyle));
+  }
+  if (textAttributes.textDecorationLinePattern.has_value()) {
+    _textAttributes(
+        "textDecorationLinePattern",
+        toString(*textAttributes.textDecorationLinePattern));
+  }
+  // Shadow
+  // textShadowOffset = textAttributes.textShadowOffset.has_value() ?
+  // textAttributes.textShadowOffset.value() : textShadowOffset;
+  if (!std::isnan(textAttributes.textShadowRadius)) {
+    _textAttributes("textShadowRadius", textAttributes.textShadowRadius);
+  }
+  if (textAttributes.textShadowColor) {
+    _textAttributes(
+        "textShadowColor", toDynamic(textAttributes.textShadowColor));
+  }
+  // Special
+  if (textAttributes.isHighlighted.has_value()) {
+    _textAttributes("isHighlighted", *textAttributes.isHighlighted);
+  }
+  if (textAttributes.layoutDirection.has_value()) {
+    _textAttributes(
+        "layoutDirection", toString(*textAttributes.layoutDirection));
+  }
+  return _textAttributes;
+}
+
+inline folly::dynamic toDynamic(const AttributedString &attributedString) {
+  auto value = folly::dynamic::object();
+  auto fragments = folly::dynamic::array();
+  for (auto fragment : attributedString.getFragments()) {
+    folly::dynamic dynamicFragment = folly::dynamic::object();
+    dynamicFragment["string"] = fragment.string;
+    if (fragment.parentShadowNode) {
+      dynamicFragment["reactTag"] = fragment.parentShadowNode->getTag();
+    }
+    dynamicFragment["textAttributes"] = toDynamic(fragment.textAttributes);
+    fragments.push_back(dynamicFragment);
   }
+  value("fragments", fragments);
+  value("string", attributedString.getString());
+  return value;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/attributedstring/primitives.h b/ReactCommon/fabric/attributedstring/primitives.h
index 7d6d0a79b7cc3b..d849258a7fa993 100644
--- a/ReactCommon/fabric/attributedstring/primitives.h
+++ b/ReactCommon/fabric/attributedstring/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,16 +7,15 @@
 
 #pragma once
 
+#include <functional>
+#include <limits>
+
 namespace facebook {
 namespace react {
 
-enum class FontStyle {
-  Normal,
-  Italic,
-  Oblique
-};
+enum class FontStyle { Normal, Italic, Oblique };
 
-enum class FontWeight: int {
+enum class FontWeight : int {
   Weight100 = 100,
   UltraLight = 100,
   Weight200 = 200,
@@ -38,7 +37,7 @@ enum class FontWeight: int {
   Black = 900
 };
 
-enum class FontVariant: int {
+enum class FontVariant : int {
   Default = 0,
   SmallCaps = 1 << 1,
   OldstyleNums = 1 << 2,
@@ -48,24 +47,25 @@ enum class FontVariant: int {
 };
 
 enum class EllipsizeMode {
-  Clip,  // Do not add ellipsize, simply clip.
-  Head,  // Truncate at head of line: "...wxyz".
-  Tail,  // Truncate at tail of line: "abcd...".
+  Clip, // Do not add ellipsize, simply clip.
+  Head, // Truncate at head of line: "...wxyz".
+  Tail, // Truncate at tail of line: "abcd...".
   Middle // Truncate middle of line: "ab...yz".
 };
 
 enum class TextAlignment {
-  Natural,  // Indicates the default alignment for script.
-  Left,     // Visually left aligned.
-  Center,   // Visually centered.
-  Right,    // Visually right aligned.
+  Natural, // Indicates the default alignment for script.
+  Left, // Visually left aligned.
+  Center, // Visually centered.
+  Right, // Visually right aligned.
   Justified // Fully-justified. The last line in a paragraph is natural-aligned.
 };
 
 enum class WritingDirection {
-  Natural,     // Determines direction using the Unicode Bidi Algorithm rules P2 and P3.
+  Natural, // Determines direction using the Unicode Bidi Algorithm rules P2 and
+           // P3.
   LeftToRight, // Left to right writing direction.
-  RightToLeft  // Right to left writing direction.
+  RightToLeft // Right to left writing direction.
 };
 
 enum class TextDecorationLineType {
@@ -75,11 +75,7 @@ enum class TextDecorationLineType {
   UnderlineStrikethrough
 };
 
-enum class TextDecorationLineStyle {
-  Single,
-  Thick,
-  Double
-};
+enum class TextDecorationLineStyle { Single, Thick, Double };
 
 enum class TextDecorationLinePattern {
   Solid,
@@ -92,3 +88,67 @@ enum class TextDecorationLinePattern {
 } // namespace react
 } // namespace facebook
 
+namespace std {
+template <>
+struct hash<facebook::react::FontVariant> {
+  size_t operator()(const facebook::react::FontVariant &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::TextAlignment> {
+  size_t operator()(const facebook::react::TextAlignment &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::FontStyle> {
+  size_t operator()(const facebook::react::FontStyle &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::TextDecorationLineType> {
+  size_t operator()(const facebook::react::TextDecorationLineType &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::WritingDirection> {
+  size_t operator()(const facebook::react::WritingDirection &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::TextDecorationLinePattern> {
+  size_t operator()(const facebook::react::TextDecorationLinePattern &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::TextDecorationLineStyle> {
+  size_t operator()(const facebook::react::TextDecorationLineStyle &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::FontWeight> {
+  size_t operator()(const facebook::react::FontWeight &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+
+template <>
+struct hash<facebook::react::EllipsizeMode> {
+  size_t operator()(const facebook::react::EllipsizeMode &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+} // namespace std
diff --git a/ReactCommon/fabric/attributedstring/tests/AttributedStringTest.cpp b/ReactCommon/fabric/attributedstring/tests/AttributedStringTest.cpp
index a04597a74552b9..1b9205d66050c8 100644
--- a/ReactCommon/fabric/attributedstring/tests/AttributedStringTest.cpp
+++ b/ReactCommon/fabric/attributedstring/tests/AttributedStringTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,40 @@
 
 #include <memory>
 
+#include <assert.h>
 #include <gtest/gtest.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/attributedstring/conversions.h>
+#include <react/attributedstring/primitives.h>
+#include <react/graphics/conversions.h>
 
-TEST(AttributedStringTest, testSomething) {
-  // TODO
+namespace facebook {
+namespace react {
+
+TEST(AttributedStringTest, testToDynamic) {
+  auto attString = new AttributedString();
+  auto fragment = new AttributedString::Fragment();
+  fragment->string = "test";
+
+  auto text = new TextAttributes();
+  text->foregroundColor = {
+      colorFromComponents({100 / 255.0, 153 / 255.0, 200 / 255.0, 1.0})};
+  text->opacity = 0.5;
+  text->fontStyle = FontStyle::Italic;
+  text->fontWeight = FontWeight::Thin;
+  text->fontVariant = FontVariant::TabularNums;
+  fragment->textAttributes = *text;
+
+  attString->prependFragment(*fragment);
+
+  auto result = toDynamic(*attString);
+  assert(result["string"] == fragment->string);
+  auto textAttribute = result["fragments"][0]["textAttributes"];
+  assert(textAttribute["foregroundColor"] == toDynamic(text->foregroundColor));
+  assert(textAttribute["opacity"] == text->opacity);
+  assert(textAttribute["fontStyle"] == toString(*text->fontStyle));
+  assert(textAttribute["fontWeight"] == toString(*text->fontWeight));
 }
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/attributedstring/tests/ParagraphAttributesTest.cpp b/ReactCommon/fabric/attributedstring/tests/ParagraphAttributesTest.cpp
new file mode 100644
index 00000000000000..ca0d6a3b6a3745
--- /dev/null
+++ b/ReactCommon/fabric/attributedstring/tests/ParagraphAttributesTest.cpp
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <memory>
+
+#include <assert.h>
+#include <gtest/gtest.h>
+#include <react/attributedstring/ParagraphAttributes.h>
+#include <react/attributedstring/conversions.h>
+#include <react/attributedstring/primitives.h>
+
+namespace facebook {
+namespace react {
+
+TEST(ParagraphAttributesTest, testToDynamic) {
+  auto paragraphAttributes = ParagraphAttributes();
+  paragraphAttributes.maximumNumberOfLines = 2;
+  paragraphAttributes.adjustsFontSizeToFit = false;
+  paragraphAttributes.ellipsizeMode = EllipsizeMode::Middle;
+  paragraphAttributes.minimumFontSize = 10;
+  paragraphAttributes.maximumFontSize = 20;
+
+  auto result = toDynamic(paragraphAttributes);
+  assert(
+      result["maximumNumberOfLines"] ==
+      paragraphAttributes.maximumNumberOfLines);
+  assert(
+      result["adjustsFontSizeToFit"] ==
+      paragraphAttributes.adjustsFontSizeToFit);
+  assert(
+      result["ellipsizeMode"] == toString(paragraphAttributes.ellipsizeMode));
+  assert(result["minimumFontSize"] == paragraphAttributes.minimumFontSize);
+  assert(result["maximumFontSize"] == paragraphAttributes.maximumFontSize);
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/attributedstring/tests/TextAttributesTest.cpp b/ReactCommon/fabric/attributedstring/tests/TextAttributesTest.cpp
new file mode 100644
index 00000000000000..c029c6649e2e34
--- /dev/null
+++ b/ReactCommon/fabric/attributedstring/tests/TextAttributesTest.cpp
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <memory>
+
+#include <assert.h>
+#include <gtest/gtest.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/attributedstring/conversions.h>
+#include <react/attributedstring/primitives.h>
+#include <react/graphics/conversions.h>
+
+namespace facebook {
+namespace react {
+
+TEST(TextAttributesTest, testToDynamic) {
+  auto text = TextAttributes();
+  text.foregroundColor = {
+      colorFromComponents({200 / 255.0, 153 / 255.0, 100 / 255.0, 1.0})};
+  text.opacity = 0.5;
+  text.fontStyle = FontStyle::Italic;
+  text.fontWeight = FontWeight::Thin;
+  text.fontVariant = FontVariant::TabularNums;
+
+  auto result = toDynamic(text);
+  assert(result["foregroundColor"] == toDynamic(text.foregroundColor));
+  assert(result["opacity"] == text.opacity);
+  assert(result["fontStyle"] == toString(*text.fontStyle));
+  assert(result["fontWeight"] == toString(*text.fontWeight));
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewComponentDescriptor.h b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewComponentDescriptor.h
index 81ce66cacda6fd..7dbe425337f335 100644
--- a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewComponentDescriptor.h
+++ b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,14 @@
 
 #pragma once
 
-#include <fabric/components/activityindicator/ActivityIndicatorViewShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/activityindicator/ActivityIndicatorViewShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
 
-using ActivityIndicatorViewComponentDescriptor = ConcreteComponentDescriptor<ActivityIndicatorViewShadowNode>;
+using ActivityIndicatorViewComponentDescriptor =
+    ConcreteComponentDescriptor<ActivityIndicatorViewShadowNode>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.cpp b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.cpp
index 5f0441f3bee2a1..6ff45aef622263 100644
--- a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.cpp
+++ b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.cpp
@@ -1,23 +1,28 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/activityindicator/ActivityIndicatorViewProps.h>
-#include <fabric/components/activityindicator/conversions.h>
-#include <fabric/core/propsConversions.h>
+#include <react/components/activityindicator/ActivityIndicatorViewProps.h>
+#include <react/components/activityindicator/conversions.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-ActivityIndicatorViewProps::ActivityIndicatorViewProps(const ActivityIndicatorViewProps &sourceProps, const RawProps &rawProps):
-  ViewProps(sourceProps, rawProps),
-  animating(convertRawProp(rawProps, "animating", sourceProps.animating)),
-  color(convertRawProp(rawProps, "color", sourceProps.color)),
-  hidesWhenStopped(convertRawProp(rawProps, "hidesWhenStopped", sourceProps.hidesWhenStopped)),
-  size(convertRawProp(rawProps, "size", sourceProps.size)) {}
+ActivityIndicatorViewProps::ActivityIndicatorViewProps(
+    const ActivityIndicatorViewProps &sourceProps,
+    const RawProps &rawProps)
+    : ViewProps(sourceProps, rawProps),
+      animating(convertRawProp(rawProps, "animating", sourceProps.animating)),
+      color(convertRawProp(rawProps, "color", sourceProps.color)),
+      hidesWhenStopped(convertRawProp(
+          rawProps,
+          "hidesWhenStopped",
+          sourceProps.hidesWhenStopped)),
+      size(convertRawProp(rawProps, "size", sourceProps.size)) {}
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.h b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.h
index 5a960642e82eb3..8a8f7395b11e07 100644
--- a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.h
+++ b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewProps.h
@@ -1,31 +1,32 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/activityindicator/primitives.h>
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/graphics/Color.h>
+#include <react/components/activityindicator/primitives.h>
+#include <react/components/view/ViewProps.h>
+#include <react/graphics/Color.h>
 
 namespace facebook {
 namespace react {
 
 // TODO (T28334063): Consider for codegen.
-class ActivityIndicatorViewProps final:
-  public ViewProps {
-
-public:
+class ActivityIndicatorViewProps final : public ViewProps {
+ public:
   ActivityIndicatorViewProps() = default;
-  ActivityIndicatorViewProps(const ActivityIndicatorViewProps &sourceProps, const RawProps &rawProps);
+  ActivityIndicatorViewProps(
+      const ActivityIndicatorViewProps &sourceProps,
+      const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const bool animating {true};
-  const SharedColor color {colorFromComponents({153/255.0, 153/255.0, 153/255.0, 1.0})}; // #999999
-  const bool hidesWhenStopped {true};
-  const ActivityIndicatorViewSize size {ActivityIndicatorViewSize::Small};
+  const bool animating{true};
+  const SharedColor color{colorFromComponents(
+      {153 / 255.0, 153 / 255.0, 153 / 255.0, 1.0})}; // #999999
+  const bool hidesWhenStopped{true};
+  const ActivityIndicatorViewSize size{ActivityIndicatorViewSize::Small};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.cpp b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.cpp
index d32f545ba417cf..09bb4700032b09 100644
--- a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.cpp
+++ b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.h b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.h
index ab24e53a0f09fb..ac768dd6d15941 100644
--- a/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.h
+++ b/ReactCommon/fabric/components/activityindicator/ActivityIndicatorViewShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/components/activityindicator/ActivityIndicatorViewProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
+#include <react/components/activityindicator/ActivityIndicatorViewProps.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -18,11 +18,9 @@ extern const char ActivityIndicatorViewComponentName[];
 /*
  * `ShadowNode` for <ActivityIndicatorView> component.
  */
-using ActivityIndicatorViewShadowNode =
-  ConcreteViewShadowNode<
+using ActivityIndicatorViewShadowNode = ConcreteViewShadowNode<
     ActivityIndicatorViewComponentName,
-    ActivityIndicatorViewProps
-  >;
+    ActivityIndicatorViewProps>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/activityindicator/BUCK b/ReactCommon/fabric/components/activityindicator/BUCK
index 279f207d8014c6..eda131333ea2e2 100644
--- a/ReactCommon/fabric/components/activityindicator/BUCK
+++ b/ReactCommon/fabric/components/activityindicator/BUCK
@@ -1,5 +1,5 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
-load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "subdir_glob", "fb_xplat_cxx_test", "get_apple_compiler_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
+load("//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "APPLE", "fb_xplat_cxx_test", "get_apple_compiler_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library", "subdir_glob")
 
 APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
 
@@ -15,7 +15,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/components/activityindicator",
+        prefix = "react/components/activityindicator",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/activityindicator/conversions.h b/ReactCommon/fabric/components/activityindicator/conversions.h
index 6d04cca3196b44..3982cb5e390846 100644
--- a/ReactCommon/fabric/components/activityindicator/conversions.h
+++ b/ReactCommon/fabric/components/activityindicator/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,23 +7,33 @@
 
 #pragma once
 
-#include <fabric/components/activityindicator/primitives.h>
 #include <folly/dynamic.h>
+#include <react/components/activityindicator/primitives.h>
 
 namespace facebook {
 namespace react {
 
-inline void fromDynamic(const folly::dynamic &value, ActivityIndicatorViewSize &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    ActivityIndicatorViewSize &result) {
   auto string = value.asString();
-  if (string == "large") { result = ActivityIndicatorViewSize::Large; return; }
-  if (string == "small") { result = ActivityIndicatorViewSize::Small; return; }
+  if (string == "large") {
+    result = ActivityIndicatorViewSize::Large;
+    return;
+  }
+  if (string == "small") {
+    result = ActivityIndicatorViewSize::Small;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const ActivityIndicatorViewSize &value) {
   switch (value) {
-    case ActivityIndicatorViewSize::Large: return "large";
-    case ActivityIndicatorViewSize::Small: return "small";
+    case ActivityIndicatorViewSize::Large:
+      return "large";
+    case ActivityIndicatorViewSize::Small:
+      return "small";
   }
 }
 
diff --git a/ReactCommon/fabric/components/activityindicator/primitives.h b/ReactCommon/fabric/components/activityindicator/primitives.h
index 4d727793be587d..ba9b2606e1d152 100644
--- a/ReactCommon/fabric/components/activityindicator/primitives.h
+++ b/ReactCommon/fabric/components/activityindicator/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/activityindicator/tests/ActivityIndicatorViewTest.cpp b/ReactCommon/fabric/components/activityindicator/tests/ActivityIndicatorViewTest.cpp
index 5a168cf958e9dc..05b6e147c22cf9 100644
--- a/ReactCommon/fabric/components/activityindicator/tests/ActivityIndicatorViewTest.cpp
+++ b/ReactCommon/fabric/components/activityindicator/tests/ActivityIndicatorViewTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/image/BUCK b/ReactCommon/fabric/components/image/BUCK
index 51b83be2f897cb..e496dc7a92db55 100644
--- a/ReactCommon/fabric/components/image/BUCK
+++ b/ReactCommon/fabric/components/image/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -25,7 +25,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/components/image",
+        prefix = "react/components/image",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/image/ImageComponentDescriptor.h b/ReactCommon/fabric/components/image/ImageComponentDescriptor.h
index d62104c8c21c47..09cf64965f4a57 100644
--- a/ReactCommon/fabric/components/image/ImageComponentDescriptor.h
+++ b/ReactCommon/fabric/components/image/ImageComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #pragma once
 
-#include <fabric/components/image/ImageShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
-#include <fabric/imagemanager/ImageManager.h>
-#include <fabric/uimanager/ContextContainer.h>
+#include <react/components/image/ImageShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
+#include <react/imagemanager/ImageManager.h>
+#include <react/uimanager/ContextContainer.h>
 
 namespace facebook {
 namespace react {
@@ -18,29 +18,33 @@ namespace react {
 /*
  * Descriptor for <Image> component.
  */
-class ImageComponentDescriptor final:
-  public ConcreteComponentDescriptor<ImageShadowNode> {
-
-public:
-  ImageComponentDescriptor(SharedEventDispatcher eventDispatcher, const SharedContextContainer &contextContainer):
-    ConcreteComponentDescriptor(eventDispatcher),
-    imageManager_(contextContainer->getInstance<SharedImageManager>()) {}
+class ImageComponentDescriptor final
+    : public ConcreteComponentDescriptor<ImageShadowNode> {
+ public:
+  ImageComponentDescriptor(
+      SharedEventDispatcher eventDispatcher,
+      const SharedContextContainer &contextContainer)
+      : ConcreteComponentDescriptor(eventDispatcher),
+        imageManager_(
+            contextContainer
+                ? contextContainer->getInstance<SharedImageManager>()
+                : nullptr) {}
 
   void adopt(UnsharedShadowNode shadowNode) const override {
     ConcreteComponentDescriptor::adopt(shadowNode);
 
     assert(std::dynamic_pointer_cast<ImageShadowNode>(shadowNode));
-    auto imageShadowNode = std::static_pointer_cast<ImageShadowNode>(shadowNode);
+    auto imageShadowNode =
+        std::static_pointer_cast<ImageShadowNode>(shadowNode);
 
     // `ImageShadowNode` uses `ImageManager` to initiate image loading and
     // communicate the loading state and results to mounting layer.
     imageShadowNode->setImageManager(imageManager_);
   }
 
-private:
+ private:
   const SharedImageManager imageManager_;
 };
 
 } // namespace react
 } // namespace facebook
-
diff --git a/ReactCommon/fabric/components/image/ImageEventEmitter.cpp b/ReactCommon/fabric/components/image/ImageEventEmitter.cpp
index 85ba6114ebc22a..bc83aa4d9b8768 100644
--- a/ReactCommon/fabric/components/image/ImageEventEmitter.cpp
+++ b/ReactCommon/fabric/components/image/ImageEventEmitter.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/image/ImageEventEmitter.h b/ReactCommon/fabric/components/image/ImageEventEmitter.h
index 4cb2625aebd29e..a853caf7536d18 100644
--- a/ReactCommon/fabric/components/image/ImageEventEmitter.h
+++ b/ReactCommon/fabric/components/image/ImageEventEmitter.h
@@ -1,20 +1,18 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 #pragma once
 
-#include <fabric/components/view/ViewEventEmitter.h>
+#include <react/components/view/ViewEventEmitter.h>
 
 namespace facebook {
 namespace react {
 
-class ImageEventEmitter:
-  public ViewEventEmitter {
-
-public:
+class ImageEventEmitter : public ViewEventEmitter {
+ public:
   using ViewEventEmitter::ViewEventEmitter;
 
   void onLoadStart() const;
diff --git a/ReactCommon/fabric/components/image/ImageLocalData.cpp b/ReactCommon/fabric/components/image/ImageLocalData.cpp
index 7ce5429da5f4ec..3fa237c1ad800a 100644
--- a/ReactCommon/fabric/components/image/ImageLocalData.cpp
+++ b/ReactCommon/fabric/components/image/ImageLocalData.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #include "ImageLocalData.h"
 
-#include <fabric/components/image/conversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/components/image/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
@@ -23,15 +23,15 @@ const ImageRequest &ImageLocalData::getImageRequest() const {
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 std::string ImageLocalData::getDebugName() const {
   return "ImageLocalData";
 }
 
 SharedDebugStringConvertibleList ImageLocalData::getDebugProps() const {
-  return {
-    debugStringConvertibleItem("imageSource", imageSource_)
-  };
+  return {debugStringConvertibleItem("imageSource", imageSource_)};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/image/ImageLocalData.h b/ReactCommon/fabric/components/image/ImageLocalData.h
index 5a3d1a75dfaa5a..d87e45a7c8132a 100644
--- a/ReactCommon/fabric/components/image/ImageLocalData.h
+++ b/ReactCommon/fabric/components/image/ImageLocalData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #pragma once
 
-#include <fabric/core/LocalData.h>
-#include <fabric/imagemanager/primitives.h>
-#include <fabric/imagemanager/ImageRequest.h>
+#include <react/core/LocalData.h>
+#include <react/imagemanager/ImageRequest.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
@@ -22,14 +22,10 @@ using SharedImageLocalData = std::shared_ptr<const ImageLocalData>;
  * LocalData for <Image> component.
  * Represents the image request state and (possible) retrieved image bitmap.
  */
-class ImageLocalData:
-  public LocalData {
-
-public:
-
-  ImageLocalData(const ImageSource &imageSource, ImageRequest imageRequest):
-    imageSource_(imageSource),
-    imageRequest_(std::move(imageRequest)) {};
+class ImageLocalData : public LocalData {
+ public:
+  ImageLocalData(const ImageSource &imageSource, ImageRequest imageRequest)
+      : imageSource_(imageSource), imageRequest_(std::move(imageRequest)){};
 
   /*
    * Returns stored ImageSource object.
@@ -44,11 +40,12 @@ class ImageLocalData:
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   std::string getDebugName() const override;
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 
-private:
-
+ private:
   ImageSource imageSource_;
   ImageRequest imageRequest_;
 };
diff --git a/ReactCommon/fabric/components/image/ImageProps.cpp b/ReactCommon/fabric/components/image/ImageProps.cpp
index 8e09e551710bb7..5eca24296c95d0 100644
--- a/ReactCommon/fabric/components/image/ImageProps.cpp
+++ b/ReactCommon/fabric/components/image/ImageProps.cpp
@@ -1,25 +1,33 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/image/conversions.h>
-#include <fabric/components/image/ImageProps.h>
-#include <fabric/core/propsConversions.h>
+#include <react/components/image/ImageProps.h>
+#include <react/components/image/conversions.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-ImageProps::ImageProps(const ImageProps &sourceProps, const RawProps &rawProps):
-  ViewProps(sourceProps, rawProps),
-  sources(convertRawProp(rawProps, "source", sourceProps.sources)),
-  defaultSources(convertRawProp(rawProps, "defaultSource", sourceProps.defaultSources)),
-  resizeMode(convertRawProp(rawProps, "resizeMode", sourceProps.resizeMode, ImageResizeMode::Stretch)),
-  blurRadius(convertRawProp(rawProps, "blurRadius", sourceProps.blurRadius)),
-  capInsets(convertRawProp(rawProps, "capInsets", sourceProps.capInsets)),
-  tintColor(convertRawProp(rawProps, "tintColor", sourceProps.tintColor)) {}
+ImageProps::ImageProps(const ImageProps &sourceProps, const RawProps &rawProps)
+    : ViewProps(sourceProps, rawProps),
+      sources(convertRawProp(rawProps, "source", sourceProps.sources)),
+      defaultSources(convertRawProp(
+          rawProps,
+          "defaultSource",
+          sourceProps.defaultSources)),
+      resizeMode(convertRawProp(
+          rawProps,
+          "resizeMode",
+          sourceProps.resizeMode,
+          ImageResizeMode::Stretch)),
+      blurRadius(
+          convertRawProp(rawProps, "blurRadius", sourceProps.blurRadius)),
+      capInsets(convertRawProp(rawProps, "capInsets", sourceProps.capInsets)),
+      tintColor(convertRawProp(rawProps, "tintColor", sourceProps.tintColor)) {}
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/image/ImageProps.h b/ReactCommon/fabric/components/image/ImageProps.h
index fb17248179e304..d0c1369a66364f 100644
--- a/ReactCommon/fabric/components/image/ImageProps.h
+++ b/ReactCommon/fabric/components/image/ImageProps.h
@@ -1,33 +1,31 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/imagemanager/primitives.h>
+#include <react/components/view/ViewProps.h>
+#include <react/graphics/Color.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
 
 // TODO (T28334063): Consider for codegen.
-class ImageProps final:
-  public ViewProps {
-
-public:
+class ImageProps final : public ViewProps {
+ public:
   ImageProps() = default;
   ImageProps(const ImageProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const ImageSources sources {};
-  const ImageSources defaultSources {};
-  const ImageResizeMode resizeMode {ImageResizeMode::Stretch};
-  const Float blurRadius {};
-  const EdgeInsets capInsets {};
-  const SharedColor tintColor {};
+  const ImageSources sources{};
+  const ImageSources defaultSources{};
+  const ImageResizeMode resizeMode{ImageResizeMode::Stretch};
+  const Float blurRadius{};
+  const EdgeInsets capInsets{};
+  const SharedColor tintColor{};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/image/ImageShadowNode.cpp b/ReactCommon/fabric/components/image/ImageShadowNode.cpp
index 37353b47488631..5421515f8a3a70 100644
--- a/ReactCommon/fabric/components/image/ImageShadowNode.cpp
+++ b/ReactCommon/fabric/components/image/ImageShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #include <cstdlib>
 
-#include <fabric/components/image/ImageShadowNode.h>
-#include <fabric/components/image/ImageLocalData.h>
-#include <fabric/core/LayoutContext.h>
+#include <react/components/image/ImageLocalData.h>
+#include <react/components/image/ImageShadowNode.h>
+#include <react/core/LayoutContext.h>
 
 namespace facebook {
 namespace react {
@@ -26,7 +26,8 @@ void ImageShadowNode::updateLocalData() {
   const auto &currentLocalData = getLocalData();
   if (currentLocalData) {
     assert(std::dynamic_pointer_cast<const ImageLocalData>(currentLocalData));
-    auto currentImageLocalData = std::static_pointer_cast<const ImageLocalData>(currentLocalData);
+    auto currentImageLocalData =
+        std::static_pointer_cast<const ImageLocalData>(currentLocalData);
     if (currentImageLocalData->getImageSource() == imageSource) {
       // Same `imageSource` is already in `localData`,
       // no need to (re)request an image resource.
@@ -38,7 +39,8 @@ void ImageShadowNode::updateLocalData() {
   ensureUnsealed();
 
   auto imageRequest = imageManager_->requestImage(imageSource);
-  auto imageLocalData = std::make_shared<ImageLocalData>(imageSource, std::move(imageRequest));
+  auto imageLocalData =
+      std::make_shared<ImageLocalData>(imageSource, std::move(imageRequest));
   setLocalData(imageLocalData);
 }
 
@@ -59,13 +61,13 @@ ImageSource ImageShadowNode::getImageSource() const {
   auto targetImageArea = size.width * size.height * scale * scale;
   auto bestFit = kFloatMax;
 
-  ImageSource bestSource;
+  auto bestSource = ImageSource{};
 
   for (const auto &source : sources) {
     auto sourceSize = source.size;
     auto sourceScale = source.scale == 0 ? scale : source.scale;
     auto sourceArea =
-      sourceSize.width * sourceSize.height * sourceScale * sourceScale;
+        sourceSize.width * sourceSize.height * sourceScale * sourceScale;
 
     auto fit = std::abs(1 - (sourceArea / targetImageArea));
 
diff --git a/ReactCommon/fabric/components/image/ImageShadowNode.h b/ReactCommon/fabric/components/image/ImageShadowNode.h
index c818559fb1c28f..e1a811fd1705db 100644
--- a/ReactCommon/fabric/components/image/ImageShadowNode.h
+++ b/ReactCommon/fabric/components/image/ImageShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,11 @@
 
 #pragma once
 
-#include <fabric/components/image/ImageEventEmitter.h>
-#include <fabric/components/image/ImageProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
-#include <fabric/imagemanager/ImageManager.h>
-#include <fabric/imagemanager/primitives.h>
+#include <react/components/image/ImageEventEmitter.h>
+#include <react/components/image/ImageProps.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
+#include <react/imagemanager/ImageManager.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
@@ -21,15 +21,11 @@ extern const char ImageComponentName[];
 /*
  * `ShadowNode` for <Image> component.
  */
-class ImageShadowNode final:
-  public ConcreteViewShadowNode<
-    ImageComponentName,
-    ImageProps,
-    ImageEventEmitter
-  > {
-
-public:
-
+class ImageShadowNode final : public ConcreteViewShadowNode<
+                                  ImageComponentName,
+                                  ImageProps,
+                                  ImageEventEmitter> {
+ public:
   using ConcreteViewShadowNode::ConcreteViewShadowNode;
 
   /*
@@ -41,8 +37,7 @@ class ImageShadowNode final:
 
   void layout(LayoutContext layoutContext) override;
 
-private:
-
+ private:
   /*
    * (Re)Creates a `LocalData` object (with `ImageRequest`) if needed.
    */
diff --git a/ReactCommon/fabric/components/image/conversions.h b/ReactCommon/fabric/components/image/conversions.h
index 3ec3674efd5cb2..5943eb283dff50 100644
--- a/ReactCommon/fabric/components/image/conversions.h
+++ b/ReactCommon/fabric/components/image/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,19 +7,16 @@
 
 #pragma once
 
-#include <fabric/imagemanager/primitives.h>
-#include <fabric/graphics/conversions.h>
 #include <folly/dynamic.h>
+#include <react/graphics/conversions.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
 
 inline void fromDynamic(const folly::dynamic &value, ImageSource &result) {
   if (value.isString()) {
-    result = {
-      .type = ImageSource::Type::Remote,
-      .uri = value.asString()
-    };
+    result = {.type = ImageSource::Type::Remote, .uri = value.asString()};
     return;
   }
 
@@ -68,21 +65,41 @@ inline std::string toString(const ImageSource &value) {
 inline void fromDynamic(const folly::dynamic &value, ImageResizeMode &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "cover") { result = ImageResizeMode::Cover; return; }
-  if (stringValue == "contain") { result = ImageResizeMode::Contain; return; }
-  if (stringValue == "stretch") { result = ImageResizeMode::Stretch; return; }
-  if (stringValue == "center") { result = ImageResizeMode::Center; return; }
-  if (stringValue == "repeat") { result = ImageResizeMode::Repeat; return; }
+  if (stringValue == "cover") {
+    result = ImageResizeMode::Cover;
+    return;
+  }
+  if (stringValue == "contain") {
+    result = ImageResizeMode::Contain;
+    return;
+  }
+  if (stringValue == "stretch") {
+    result = ImageResizeMode::Stretch;
+    return;
+  }
+  if (stringValue == "center") {
+    result = ImageResizeMode::Center;
+    return;
+  }
+  if (stringValue == "repeat") {
+    result = ImageResizeMode::Repeat;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const ImageResizeMode &value) {
   switch (value) {
-    case ImageResizeMode::Cover: return "cover";
-    case ImageResizeMode::Contain: return "contain";
-    case ImageResizeMode::Stretch: return "stretch";
-    case ImageResizeMode::Center: return "center";
-    case ImageResizeMode::Repeat: return "repeat";
+    case ImageResizeMode::Cover:
+      return "cover";
+    case ImageResizeMode::Contain:
+      return "contain";
+    case ImageResizeMode::Stretch:
+      return "stretch";
+    case ImageResizeMode::Center:
+      return "center";
+    case ImageResizeMode::Repeat:
+      return "repeat";
   }
 }
 
diff --git a/ReactCommon/fabric/components/image/tests/ImageTest.cpp b/ReactCommon/fabric/components/image/tests/ImageTest.cpp
index a55a5783d83c10..2a15830d82e902 100644
--- a/ReactCommon/fabric/components/image/tests/ImageTest.cpp
+++ b/ReactCommon/fabric/components/image/tests/ImageTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/root/BUCK b/ReactCommon/fabric/components/root/BUCK
index 0b022a649151a4..56782c58e0618d 100644
--- a/ReactCommon/fabric/components/root/BUCK
+++ b/ReactCommon/fabric/components/root/BUCK
@@ -1,14 +1,14 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
-    "subdir_glob",
     "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
     "get_apple_inspector_flags",
     "react_native_xplat_target",
     "rn_xplat_cxx_library",
+    "subdir_glob",
 )
 
 APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
@@ -25,7 +25,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/components/root",
+        prefix = "react/components/root",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/root/RootProps.cpp b/ReactCommon/fabric/components/root/RootProps.cpp
index f3c65e38db8cc5..d0efb194000d21 100644
--- a/ReactCommon/fabric/components/root/RootProps.cpp
+++ b/ReactCommon/fabric/components/root/RootProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,35 +7,38 @@
 
 #include "RootProps.h"
 
-#include <fabric/components/view/conversions.h>
-#include <fabric/components/view/YogaLayoutableShadowNode.h>
+#include <react/components/view/YogaLayoutableShadowNode.h>
+#include <react/components/view/conversions.h>
 
 namespace facebook {
 namespace react {
 
-static YGStyle yogaStyleFromLayoutConstraints(const LayoutConstraints &layoutConstraints) {
-  YGStyle yogaStyle;
+static YGStyle yogaStyleFromLayoutConstraints(
+    const LayoutConstraints &layoutConstraints) {
+  auto yogaStyle = YGStyle{};
   yogaStyle.minDimensions[YGDimensionWidth] =
-    yogaStyleValueFromFloat(layoutConstraints.minimumSize.width);
+      yogaStyleValueFromFloat(layoutConstraints.minimumSize.width);
   yogaStyle.minDimensions[YGDimensionHeight] =
-    yogaStyleValueFromFloat(layoutConstraints.minimumSize.height);
+      yogaStyleValueFromFloat(layoutConstraints.minimumSize.height);
 
   yogaStyle.maxDimensions[YGDimensionWidth] =
-    yogaStyleValueFromFloat(layoutConstraints.maximumSize.width);
+      yogaStyleValueFromFloat(layoutConstraints.maximumSize.width);
   yogaStyle.maxDimensions[YGDimensionHeight] =
-    yogaStyleValueFromFloat(layoutConstraints.maximumSize.height);
+      yogaStyleValueFromFloat(layoutConstraints.maximumSize.height);
+
+  yogaStyle.direction =
+      yogaDirectionFromLayoutDirection(layoutConstraints.layoutDirection);
 
   return yogaStyle;
 }
 
 RootProps::RootProps(
-  const RootProps &sourceProps,
-  const LayoutConstraints &layoutConstraints,
-  const LayoutContext &layoutContext
-):
-  ViewProps(yogaStyleFromLayoutConstraints(layoutConstraints)),
-  layoutConstraints(layoutConstraints),
-  layoutContext(layoutContext) {};
+    const RootProps &sourceProps,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext)
+    : ViewProps(yogaStyleFromLayoutConstraints(layoutConstraints)),
+      layoutConstraints(layoutConstraints),
+      layoutContext(layoutContext){};
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/root/RootProps.h b/ReactCommon/fabric/components/root/RootProps.h
index 1804454fe5f666..1ef3068eaff62b 100644
--- a/ReactCommon/fabric/components/root/RootProps.h
+++ b/ReactCommon/fabric/components/root/RootProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <memory>
 
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/core/LayoutConstraints.h>
-#include <fabric/core/LayoutContext.h>
+#include <react/components/view/ViewProps.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/core/LayoutContext.h>
 
 namespace facebook {
 namespace react {
@@ -20,21 +20,18 @@ class RootProps;
 
 using SharedRootProps = std::shared_ptr<const RootProps>;
 
-class RootProps final:
-  public ViewProps {
-
-public:
+class RootProps final : public ViewProps {
+ public:
   RootProps() = default;
   RootProps(
-    const RootProps &sourceProps,
-    const LayoutConstraints &layoutConstraints,
-    const LayoutContext &layoutContext
-  );
+      const RootProps &sourceProps,
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext);
 
 #pragma mark - Props
 
-  const LayoutConstraints layoutConstraints {};
-  const LayoutContext layoutContext {};
+  const LayoutConstraints layoutConstraints{};
+  const LayoutContext layoutContext{};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/root/RootShadowNode.cpp b/ReactCommon/fabric/components/root/RootShadowNode.cpp
index f7787a8406518d..c306853d2a776d 100644
--- a/ReactCommon/fabric/components/root/RootShadowNode.cpp
+++ b/ReactCommon/fabric/components/root/RootShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #include "RootShadowNode.h"
 
-#include <fabric/components/view/conversions.h>
+#include <react/components/view/conversions.h>
 
 namespace facebook {
 namespace react {
diff --git a/ReactCommon/fabric/components/root/RootShadowNode.h b/ReactCommon/fabric/components/root/RootShadowNode.h
index 113cabe5cac63e..f3429b0c0e43b1 100644
--- a/ReactCommon/fabric/components/root/RootShadowNode.h
+++ b/ReactCommon/fabric/components/root/RootShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <memory>
 
-#include <fabric/components/root/RootProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
-#include <fabric/core/LayoutContext.h>
+#include <react/components/root/RootProps.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
+#include <react/core/LayoutContext.h>
 
 namespace facebook {
 namespace react {
@@ -29,14 +29,9 @@ extern const char RootComponentName[];
  * props which represent external layout constraints and context of the
  * shadow tree.
  */
-class RootShadowNode final:
-  public ConcreteViewShadowNode<
-    RootComponentName,
-    RootProps
-  > {
-
-public:
-
+class RootShadowNode final
+    : public ConcreteViewShadowNode<RootComponentName, RootProps> {
+ public:
   using ConcreteViewShadowNode::ConcreteViewShadowNode;
 
   /*
@@ -44,8 +39,7 @@ class RootShadowNode final:
    */
   void layout();
 
-private:
-
+ private:
   using YogaLayoutableShadowNode::layout;
 };
 
diff --git a/ReactCommon/fabric/components/root/tests/RootShadowNodeTest.cpp b/ReactCommon/fabric/components/root/tests/RootShadowNodeTest.cpp
index 776da172dc0f60..5ebd60a99cbf26 100644
--- a/ReactCommon/fabric/components/root/tests/RootShadowNodeTest.cpp
+++ b/ReactCommon/fabric/components/root/tests/RootShadowNodeTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/scrollview/BUCK b/ReactCommon/fabric/components/scrollview/BUCK
index e340c29453486d..71522013612772 100644
--- a/ReactCommon/fabric/components/scrollview/BUCK
+++ b/ReactCommon/fabric/components/scrollview/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -28,7 +28,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/components/scrollview",
+        prefix = "react/components/scrollview",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewComponentDescriptor.h b/ReactCommon/fabric/components/scrollview/ScrollViewComponentDescriptor.h
index 9b7b3737735c48..74ccf9240d3b7b 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewComponentDescriptor.h
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,14 @@
 
 #pragma once
 
-#include <fabric/components/scrollview/ScrollViewShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/scrollview/ScrollViewShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
 
-using ScrollViewComponentDescriptor = ConcreteComponentDescriptor<ScrollViewShadowNode>;
+using ScrollViewComponentDescriptor =
+    ConcreteComponentDescriptor<ScrollViewShadowNode>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.cpp b/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.cpp
index c416b98b4dde37..2db1b61aec1388 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.cpp
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,46 +10,54 @@
 namespace facebook {
 namespace react {
 
-void ScrollViewEventEmitter::onScroll(const ScrollViewMetrics &scrollViewMetrics) const {
+void ScrollViewEventEmitter::onScroll(
+    const ScrollViewMetrics &scrollViewMetrics) const {
   dispatchScrollViewEvent("scroll", scrollViewMetrics);
 }
 
-void ScrollViewEventEmitter::onScrollBeginDrag(const ScrollViewMetrics &scrollViewMetrics) const {
+void ScrollViewEventEmitter::onScrollBeginDrag(
+    const ScrollViewMetrics &scrollViewMetrics) const {
   dispatchScrollViewEvent("scrollBeginDrag", scrollViewMetrics);
 }
 
-void ScrollViewEventEmitter::onScrollEndDrag(const ScrollViewMetrics &scrollViewMetrics) const {
+void ScrollViewEventEmitter::onScrollEndDrag(
+    const ScrollViewMetrics &scrollViewMetrics) const {
   dispatchScrollViewEvent("scrollEndDrag", scrollViewMetrics);
 }
 
-void ScrollViewEventEmitter::onMomentumScrollBegin(const ScrollViewMetrics &scrollViewMetrics) const {
+void ScrollViewEventEmitter::onMomentumScrollBegin(
+    const ScrollViewMetrics &scrollViewMetrics) const {
   dispatchScrollViewEvent("momentumScrollBegin", scrollViewMetrics);
 }
 
-void ScrollViewEventEmitter::onMomentumScrollEnd(const ScrollViewMetrics &scrollViewMetrics) const {
+void ScrollViewEventEmitter::onMomentumScrollEnd(
+    const ScrollViewMetrics &scrollViewMetrics) const {
   dispatchScrollViewEvent("momentumScrollEnd", scrollViewMetrics);
 }
 
-void ScrollViewEventEmitter::dispatchScrollViewEvent(const std::string &name, const ScrollViewMetrics &scrollViewMetrics, const folly::dynamic &payload) const {
+void ScrollViewEventEmitter::dispatchScrollViewEvent(
+    const std::string &name,
+    const ScrollViewMetrics &scrollViewMetrics,
+    const folly::dynamic &payload) const {
   folly::dynamic compoundPayload = folly::dynamic::object();
 
-  compoundPayload["contentOffset"] = folly::dynamic::object
-    ("x", scrollViewMetrics.contentOffset.x)
-    ("y", scrollViewMetrics.contentOffset.y);
+  compoundPayload["contentOffset"] =
+      folly::dynamic::object("x", scrollViewMetrics.contentOffset.x)(
+          "y", scrollViewMetrics.contentOffset.y);
 
-  compoundPayload["contentInset"] = folly::dynamic::object
-    ("top", scrollViewMetrics.contentInset.top)
-    ("left", scrollViewMetrics.contentInset.left)
-    ("bottom", scrollViewMetrics.contentInset.bottom)
-    ("right", scrollViewMetrics.contentInset.right);
+  compoundPayload["contentInset"] =
+      folly::dynamic::object("top", scrollViewMetrics.contentInset.top)(
+          "left", scrollViewMetrics.contentInset.left)(
+          "bottom", scrollViewMetrics.contentInset.bottom)(
+          "right", scrollViewMetrics.contentInset.right);
 
-  compoundPayload["contentSize"] = folly::dynamic::object
-    ("width", scrollViewMetrics.contentSize.width)
-    ("height", scrollViewMetrics.contentSize.height);
+  compoundPayload["contentSize"] =
+      folly::dynamic::object("width", scrollViewMetrics.contentSize.width)(
+          "height", scrollViewMetrics.contentSize.height);
 
-  compoundPayload["layoutMeasurement"] = folly::dynamic::object
-    ("width", scrollViewMetrics.containerSize.width)
-    ("height", scrollViewMetrics.containerSize.height);
+  compoundPayload["layoutMeasurement"] =
+      folly::dynamic::object("width", scrollViewMetrics.containerSize.width)(
+          "height", scrollViewMetrics.containerSize.height);
 
   compoundPayload["zoomScale"] = scrollViewMetrics.zoomScale;
 
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.h b/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.h
index 2c662703a7266b..161b5d1f2dd3ef 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.h
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewEventEmitter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,16 +8,16 @@
 
 #include <memory>
 
-#include <fabric/components/view/ViewEventEmitter.h>
-#include <fabric/events/EventEmitter.h>
-#include <fabric/graphics/Geometry.h>
 #include <folly/dynamic.h>
+#include <react/components/view/ViewEventEmitter.h>
+#include <react/events/EventEmitter.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
 
 class ScrollViewMetrics {
-public:
+ public:
   Size contentSize;
   Point contentOffset;
   EdgeInsets contentInset;
@@ -27,13 +27,11 @@ class ScrollViewMetrics {
 
 class ScrollViewEventEmitter;
 
-using SharedScrollViewEventEmitter = std::shared_ptr<const ScrollViewEventEmitter>;
-
-class ScrollViewEventEmitter:
-  public ViewEventEmitter {
-
-public:
+using SharedScrollViewEventEmitter =
+    std::shared_ptr<const ScrollViewEventEmitter>;
 
+class ScrollViewEventEmitter : public ViewEventEmitter {
+ public:
   using ViewEventEmitter::ViewEventEmitter;
 
   void onScroll(const ScrollViewMetrics &scrollViewMetrics) const;
@@ -42,9 +40,11 @@ class ScrollViewEventEmitter:
   void onMomentumScrollBegin(const ScrollViewMetrics &scrollViewMetrics) const;
   void onMomentumScrollEnd(const ScrollViewMetrics &scrollViewMetrics) const;
 
-private:
-
-  void dispatchScrollViewEvent(const std::string &name, const ScrollViewMetrics &scrollViewMetrics, const folly::dynamic &payload = {}) const;
+ private:
+  void dispatchScrollViewEvent(
+      const std::string &name,
+      const ScrollViewMetrics &scrollViewMetrics,
+      const folly::dynamic &payload = {}) const;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.cpp b/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.cpp
index a4424f81f97b7d..f3e1cd1f21f08e 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.cpp
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,30 +7,31 @@
 
 #include "ScrollViewLocalData.h"
 
-#include <fabric/debug/debugStringConvertibleUtils.h>
-#include <fabric/graphics/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
 
-ScrollViewLocalData::ScrollViewLocalData(Rect contentBoundingRect):
-  contentBoundingRect(contentBoundingRect) {}
+ScrollViewLocalData::ScrollViewLocalData(Rect contentBoundingRect)
+    : contentBoundingRect(contentBoundingRect) {}
 
 Size ScrollViewLocalData::getContentSize() const {
-  return Size {contentBoundingRect.getMaxX(), contentBoundingRect.getMaxY()};
+  return Size{contentBoundingRect.getMaxX(), contentBoundingRect.getMaxY()};
 }
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 std::string ScrollViewLocalData::getDebugName() const {
   return "ScrollViewLocalData";
 }
 
 SharedDebugStringConvertibleList ScrollViewLocalData::getDebugProps() const {
   return {
-    debugStringConvertibleItem("contentBoundingRect", contentBoundingRect)
-  };
+      debugStringConvertibleItem("contentBoundingRect", contentBoundingRect)};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.h b/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.h
index 8ed967d6232880..f54778fe1a7056 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.h
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewLocalData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/LocalData.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/core/LocalData.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -20,10 +20,8 @@ using SharedScrollViewLocalData = std::shared_ptr<const ScrollViewLocalData>;
 /*
  * LocalData for <ScrollView> component.
  */
-class ScrollViewLocalData:
-  public LocalData {
-
-public:
+class ScrollViewLocalData : public LocalData {
+ public:
   ScrollViewLocalData(Rect contentBoundingRect);
 
   /*
@@ -38,8 +36,10 @@ class ScrollViewLocalData:
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   std::string getDebugName() const override;
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewProps.cpp b/ReactCommon/fabric/components/scrollview/ScrollViewProps.cpp
index cdee74966e67bc..4b2184b19f0b8d 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewProps.cpp
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,78 +7,226 @@
 
 #include "ScrollViewProps.h"
 
-#include <fabric/components/scrollview/conversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
-#include <fabric/graphics/conversions.h>
+#include <react/components/scrollview/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
+#include <react/graphics/conversions.h>
 
-#include <fabric/core/propsConversions.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-ScrollViewProps::ScrollViewProps(const ScrollViewProps &sourceProps, const RawProps &rawProps):
-  ViewProps(sourceProps, rawProps),
-  alwaysBounceHorizontal(convertRawProp(rawProps, "alwaysBounceHorizontal", sourceProps.alwaysBounceHorizontal, true)),
-  alwaysBounceVertical(convertRawProp(rawProps, "alwaysBounceVertical", sourceProps.alwaysBounceVertical, true)),
-  bounces(convertRawProp(rawProps, "bounces", sourceProps.bounces, true)),
-  bouncesZoom(convertRawProp(rawProps, "bouncesZoom", sourceProps.bouncesZoom, true)),
-  canCancelContentTouches(convertRawProp(rawProps, "canCancelContentTouches", sourceProps.canCancelContentTouches)),
-  centerContent(convertRawProp(rawProps, "centerContent", sourceProps.centerContent)),
-  automaticallyAdjustContentInsets(convertRawProp(rawProps, "automaticallyAdjustContentInsets", sourceProps.automaticallyAdjustContentInsets)),
-  decelerationRate(convertRawProp(rawProps, "decelerationRate", sourceProps.decelerationRate, (Float)0.998)),
-  directionalLockEnabled(convertRawProp(rawProps, "directionalLockEnabled", sourceProps.directionalLockEnabled)),
-  indicatorStyle(convertRawProp(rawProps, "indicatorStyle", sourceProps.indicatorStyle)),
-  keyboardDismissMode(convertRawProp(rawProps, "keyboardDismissMode", sourceProps.keyboardDismissMode)),
-  maximumZoomScale(convertRawProp(rawProps, "maximumZoomScale", sourceProps.maximumZoomScale, (Float)1.0)),
-  minimumZoomScale(convertRawProp(rawProps, "minimumZoomScale", sourceProps.minimumZoomScale, (Float)1.0)),
-  scrollEnabled(convertRawProp(rawProps, "scrollEnabled", sourceProps.scrollEnabled, true)),
-  pagingEnabled(convertRawProp(rawProps, "pagingEnabled", sourceProps.pagingEnabled)),
-  pinchGestureEnabled(convertRawProp(rawProps, "pinchGestureEnabled", sourceProps.pinchGestureEnabled, true)),
-  scrollsToTop(convertRawProp(rawProps, "scrollsToTop", sourceProps.scrollsToTop, true)),
-  showsHorizontalScrollIndicator(convertRawProp(rawProps, "showsHorizontalScrollIndicator", sourceProps.showsHorizontalScrollIndicator, true)),
-  showsVerticalScrollIndicator(convertRawProp(rawProps, "showsVerticalScrollIndicator", sourceProps.showsVerticalScrollIndicator, true)),
-  scrollEventThrottle(convertRawProp(rawProps, "scrollEventThrottle", sourceProps.scrollEventThrottle)),
-  zoomScale(convertRawProp(rawProps, "zoomScale", sourceProps.zoomScale, (Float)1.0)),
-  contentInset(convertRawProp(rawProps, "contentInset", sourceProps.contentInset)),
-  scrollIndicatorInsets(convertRawProp(rawProps, "scrollIndicatorInsets", sourceProps.scrollIndicatorInsets)),
-  snapToInterval(convertRawProp(rawProps, "snapToInterval", sourceProps.snapToInterval)),
-  snapToAlignment(convertRawProp(rawProps, "snapToAlignment", sourceProps.snapToAlignment)) {}
+ScrollViewProps::ScrollViewProps(
+    const ScrollViewProps &sourceProps,
+    const RawProps &rawProps)
+    : ViewProps(sourceProps, rawProps),
+      alwaysBounceHorizontal(convertRawProp(
+          rawProps,
+          "alwaysBounceHorizontal",
+          sourceProps.alwaysBounceHorizontal)),
+      alwaysBounceVertical(convertRawProp(
+          rawProps,
+          "alwaysBounceVertical",
+          sourceProps.alwaysBounceVertical)),
+      bounces(convertRawProp(rawProps, "bounces", sourceProps.bounces, true)),
+      bouncesZoom(convertRawProp(
+          rawProps,
+          "bouncesZoom",
+          sourceProps.bouncesZoom,
+          true)),
+      canCancelContentTouches(convertRawProp(
+          rawProps,
+          "canCancelContentTouches",
+          sourceProps.canCancelContentTouches)),
+      centerContent(
+          convertRawProp(rawProps, "centerContent", sourceProps.centerContent)),
+      automaticallyAdjustContentInsets(convertRawProp(
+          rawProps,
+          "automaticallyAdjustContentInsets",
+          sourceProps.automaticallyAdjustContentInsets)),
+      decelerationRate(convertRawProp(
+          rawProps,
+          "decelerationRate",
+          sourceProps.decelerationRate,
+          (Float)0.998)),
+      directionalLockEnabled(convertRawProp(
+          rawProps,
+          "directionalLockEnabled",
+          sourceProps.directionalLockEnabled)),
+      indicatorStyle(convertRawProp(
+          rawProps,
+          "indicatorStyle",
+          sourceProps.indicatorStyle)),
+      keyboardDismissMode(convertRawProp(
+          rawProps,
+          "keyboardDismissMode",
+          sourceProps.keyboardDismissMode)),
+      maximumZoomScale(convertRawProp(
+          rawProps,
+          "maximumZoomScale",
+          sourceProps.maximumZoomScale,
+          (Float)1.0)),
+      minimumZoomScale(convertRawProp(
+          rawProps,
+          "minimumZoomScale",
+          sourceProps.minimumZoomScale,
+          (Float)1.0)),
+      scrollEnabled(convertRawProp(
+          rawProps,
+          "scrollEnabled",
+          sourceProps.scrollEnabled,
+          true)),
+      pagingEnabled(
+          convertRawProp(rawProps, "pagingEnabled", sourceProps.pagingEnabled)),
+      pinchGestureEnabled(convertRawProp(
+          rawProps,
+          "pinchGestureEnabled",
+          sourceProps.pinchGestureEnabled,
+          true)),
+      scrollsToTop(convertRawProp(
+          rawProps,
+          "scrollsToTop",
+          sourceProps.scrollsToTop,
+          true)),
+      showsHorizontalScrollIndicator(convertRawProp(
+          rawProps,
+          "showsHorizontalScrollIndicator",
+          sourceProps.showsHorizontalScrollIndicator,
+          true)),
+      showsVerticalScrollIndicator(convertRawProp(
+          rawProps,
+          "showsVerticalScrollIndicator",
+          sourceProps.showsVerticalScrollIndicator,
+          true)),
+      scrollEventThrottle(convertRawProp(
+          rawProps,
+          "scrollEventThrottle",
+          sourceProps.scrollEventThrottle)),
+      zoomScale(convertRawProp(
+          rawProps,
+          "zoomScale",
+          sourceProps.zoomScale,
+          (Float)1.0)),
+      contentInset(
+          convertRawProp(rawProps, "contentInset", sourceProps.contentInset)),
+      scrollIndicatorInsets(convertRawProp(
+          rawProps,
+          "scrollIndicatorInsets",
+          sourceProps.scrollIndicatorInsets)),
+      snapToInterval(convertRawProp(
+          rawProps,
+          "snapToInterval",
+          sourceProps.snapToInterval)),
+      snapToAlignment(convertRawProp(
+          rawProps,
+          "snapToAlignment",
+          sourceProps.snapToAlignment)) {}
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList ScrollViewProps::getDebugProps() const {
-  ScrollViewProps defaultScrollViewProps;
+  auto defaultScrollViewProps = ScrollViewProps{};
 
-  return
-    ViewProps::getDebugProps() +
-    SharedDebugStringConvertibleList {
-      debugStringConvertibleItem("alwaysBounceHorizontal", alwaysBounceHorizontal, defaultScrollViewProps.alwaysBounceHorizontal),
-      debugStringConvertibleItem("alwaysBounceVertical", alwaysBounceVertical, defaultScrollViewProps.alwaysBounceVertical),
-      debugStringConvertibleItem("bounces", bounces, defaultScrollViewProps.bounces),
-      debugStringConvertibleItem("bouncesZoom", bouncesZoom, defaultScrollViewProps.bouncesZoom),
-      debugStringConvertibleItem("canCancelContentTouches", canCancelContentTouches, defaultScrollViewProps.canCancelContentTouches),
-      debugStringConvertibleItem("centerContent", centerContent, defaultScrollViewProps.centerContent),
-      debugStringConvertibleItem("automaticallyAdjustContentInsets", automaticallyAdjustContentInsets, defaultScrollViewProps.automaticallyAdjustContentInsets),
-      debugStringConvertibleItem("decelerationRate", decelerationRate, defaultScrollViewProps.decelerationRate),
-      debugStringConvertibleItem("directionalLockEnabled", directionalLockEnabled, defaultScrollViewProps.directionalLockEnabled),
-      debugStringConvertibleItem("indicatorStyle", indicatorStyle, defaultScrollViewProps.indicatorStyle),
-      debugStringConvertibleItem("keyboardDismissMode", keyboardDismissMode, defaultScrollViewProps.keyboardDismissMode),
-      debugStringConvertibleItem("maximumZoomScale", maximumZoomScale, defaultScrollViewProps.maximumZoomScale),
-      debugStringConvertibleItem("minimumZoomScale", minimumZoomScale, defaultScrollViewProps.minimumZoomScale),
-      debugStringConvertibleItem("scrollEnabled", scrollEnabled, defaultScrollViewProps.scrollEnabled),
-      debugStringConvertibleItem("pagingEnabled", pagingEnabled, defaultScrollViewProps.pagingEnabled),
-      debugStringConvertibleItem("pinchGestureEnabled", pinchGestureEnabled, defaultScrollViewProps.pinchGestureEnabled),
-      debugStringConvertibleItem("scrollsToTop", scrollsToTop, defaultScrollViewProps.scrollsToTop),
-      debugStringConvertibleItem("showsHorizontalScrollIndicator", showsHorizontalScrollIndicator, defaultScrollViewProps.showsHorizontalScrollIndicator),
-      debugStringConvertibleItem("showsVerticalScrollIndicator", showsVerticalScrollIndicator, defaultScrollViewProps.showsVerticalScrollIndicator),
-      debugStringConvertibleItem("scrollEventThrottle", scrollEventThrottle, defaultScrollViewProps.scrollEventThrottle),
-      debugStringConvertibleItem("zoomScale", zoomScale, defaultScrollViewProps.zoomScale),
-      debugStringConvertibleItem("contentInset", contentInset, defaultScrollViewProps.contentInset),
-      debugStringConvertibleItem("scrollIndicatorInsets", scrollIndicatorInsets, defaultScrollViewProps.scrollIndicatorInsets),
-      debugStringConvertibleItem("snapToInterval", snapToInterval, defaultScrollViewProps.snapToInterval),
-      debugStringConvertibleItem("snapToAlignment", snapToAlignment, defaultScrollViewProps.snapToAlignment),
-    };
+  return ViewProps::getDebugProps() +
+      SharedDebugStringConvertibleList{
+          debugStringConvertibleItem(
+              "alwaysBounceHorizontal",
+              alwaysBounceHorizontal,
+              defaultScrollViewProps.alwaysBounceHorizontal),
+          debugStringConvertibleItem(
+              "alwaysBounceVertical",
+              alwaysBounceVertical,
+              defaultScrollViewProps.alwaysBounceVertical),
+          debugStringConvertibleItem(
+              "bounces", bounces, defaultScrollViewProps.bounces),
+          debugStringConvertibleItem(
+              "bouncesZoom", bouncesZoom, defaultScrollViewProps.bouncesZoom),
+          debugStringConvertibleItem(
+              "canCancelContentTouches",
+              canCancelContentTouches,
+              defaultScrollViewProps.canCancelContentTouches),
+          debugStringConvertibleItem(
+              "centerContent",
+              centerContent,
+              defaultScrollViewProps.centerContent),
+          debugStringConvertibleItem(
+              "automaticallyAdjustContentInsets",
+              automaticallyAdjustContentInsets,
+              defaultScrollViewProps.automaticallyAdjustContentInsets),
+          debugStringConvertibleItem(
+              "decelerationRate",
+              decelerationRate,
+              defaultScrollViewProps.decelerationRate),
+          debugStringConvertibleItem(
+              "directionalLockEnabled",
+              directionalLockEnabled,
+              defaultScrollViewProps.directionalLockEnabled),
+          debugStringConvertibleItem(
+              "indicatorStyle",
+              indicatorStyle,
+              defaultScrollViewProps.indicatorStyle),
+          debugStringConvertibleItem(
+              "keyboardDismissMode",
+              keyboardDismissMode,
+              defaultScrollViewProps.keyboardDismissMode),
+          debugStringConvertibleItem(
+              "maximumZoomScale",
+              maximumZoomScale,
+              defaultScrollViewProps.maximumZoomScale),
+          debugStringConvertibleItem(
+              "minimumZoomScale",
+              minimumZoomScale,
+              defaultScrollViewProps.minimumZoomScale),
+          debugStringConvertibleItem(
+              "scrollEnabled",
+              scrollEnabled,
+              defaultScrollViewProps.scrollEnabled),
+          debugStringConvertibleItem(
+              "pagingEnabled",
+              pagingEnabled,
+              defaultScrollViewProps.pagingEnabled),
+          debugStringConvertibleItem(
+              "pinchGestureEnabled",
+              pinchGestureEnabled,
+              defaultScrollViewProps.pinchGestureEnabled),
+          debugStringConvertibleItem(
+              "scrollsToTop",
+              scrollsToTop,
+              defaultScrollViewProps.scrollsToTop),
+          debugStringConvertibleItem(
+              "showsHorizontalScrollIndicator",
+              showsHorizontalScrollIndicator,
+              defaultScrollViewProps.showsHorizontalScrollIndicator),
+          debugStringConvertibleItem(
+              "showsVerticalScrollIndicator",
+              showsVerticalScrollIndicator,
+              defaultScrollViewProps.showsVerticalScrollIndicator),
+          debugStringConvertibleItem(
+              "scrollEventThrottle",
+              scrollEventThrottle,
+              defaultScrollViewProps.scrollEventThrottle),
+          debugStringConvertibleItem(
+              "zoomScale", zoomScale, defaultScrollViewProps.zoomScale),
+          debugStringConvertibleItem(
+              "contentInset",
+              contentInset,
+              defaultScrollViewProps.contentInset),
+          debugStringConvertibleItem(
+              "scrollIndicatorInsets",
+              scrollIndicatorInsets,
+              defaultScrollViewProps.scrollIndicatorInsets),
+          debugStringConvertibleItem(
+              "snapToInterval",
+              snapToInterval,
+              defaultScrollViewProps.snapToInterval),
+          debugStringConvertibleItem(
+              "snapToAlignment",
+              snapToAlignment,
+              defaultScrollViewProps.snapToAlignment),
+      };
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewProps.h b/ReactCommon/fabric/components/scrollview/ScrollViewProps.h
index 5ad6d08b9c9cae..4dc57b79db0bee 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewProps.h
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,53 +7,52 @@
 
 #pragma once
 
-#include <fabric/components/scrollview/primitives.h>
-#include <fabric/components/view/ViewProps.h>
+#include <react/components/scrollview/primitives.h>
+#include <react/components/view/ViewProps.h>
 
 namespace facebook {
 namespace react {
 
 // TODO (T28334063): Consider for codegen.
-class ScrollViewProps final:
-  public ViewProps {
-
-public:
+class ScrollViewProps final : public ViewProps {
+ public:
   ScrollViewProps() = default;
   ScrollViewProps(const ScrollViewProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const bool alwaysBounceHorizontal {true};
-  const bool alwaysBounceVertical {true};
-  const bool bounces {true};
-  const bool bouncesZoom {true};
-  const bool canCancelContentTouches {true};
-  const bool centerContent {};
-  const bool automaticallyAdjustContentInsets  {};
-  const Float decelerationRate {0.998};
-  const bool directionalLockEnabled {};
-  const ScrollViewIndicatorStyle indicatorStyle {};
-  const ScrollViewKeyboardDismissMode keyboardDismissMode {};
-  const Float maximumZoomScale {1.0};
-  const Float minimumZoomScale {1.0};
-  const bool scrollEnabled {true};
-  const bool pagingEnabled {};
-  const bool pinchGestureEnabled {true};
-  const bool scrollsToTop {true};
-  const bool showsHorizontalScrollIndicator {true};
-  const bool showsVerticalScrollIndicator {true};
-  const Float scrollEventThrottle {};
-  const Float zoomScale {1.0};
-  const EdgeInsets contentInset {};
-  const EdgeInsets scrollIndicatorInsets {};
-  const int snapToInterval {};
-  const ScrollViewSnapToAlignment snapToAlignment {};
+  const bool alwaysBounceHorizontal{};
+  const bool alwaysBounceVertical{};
+  const bool bounces{true};
+  const bool bouncesZoom{true};
+  const bool canCancelContentTouches{true};
+  const bool centerContent{};
+  const bool automaticallyAdjustContentInsets{};
+  const Float decelerationRate{0.998};
+  const bool directionalLockEnabled{};
+  const ScrollViewIndicatorStyle indicatorStyle{};
+  const ScrollViewKeyboardDismissMode keyboardDismissMode{};
+  const Float maximumZoomScale{1.0};
+  const Float minimumZoomScale{1.0};
+  const bool scrollEnabled{true};
+  const bool pagingEnabled{};
+  const bool pinchGestureEnabled{true};
+  const bool scrollsToTop{true};
+  const bool showsHorizontalScrollIndicator{true};
+  const bool showsVerticalScrollIndicator{true};
+  const Float scrollEventThrottle{};
+  const Float zoomScale{1.0};
+  const EdgeInsets contentInset{};
+  const EdgeInsets scrollIndicatorInsets{};
+  const int snapToInterval{};
+  const ScrollViewSnapToAlignment snapToAlignment{};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
 } // namespace facebook
-
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.cpp b/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.cpp
index 70296a183d9306..4eb4bdeca53dca 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.cpp
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #include "ScrollViewShadowNode.h"
 
-#include <fabric/core/LayoutMetrics.h>
+#include <react/core/LayoutMetrics.h>
 
 #include "ScrollViewLocalData.h"
 
@@ -19,12 +19,13 @@ const char ScrollViewComponentName[] = "ScrollView";
 void ScrollViewShadowNode::updateLocalData() {
   ensureUnsealed();
 
-  Rect contentBoundingRect;
+  auto contentBoundingRect = Rect{};
   for (const auto &childNode : getLayoutableChildNodes()) {
     contentBoundingRect.unionInPlace(childNode->getLayoutMetrics().frame);
   }
 
-  const auto &localData = std::make_shared<const ScrollViewLocalData>(contentBoundingRect);
+  const auto &localData =
+      std::make_shared<const ScrollViewLocalData>(contentBoundingRect);
   setLocalData(localData);
 }
 
diff --git a/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.h b/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.h
index 22d91300b54a5d..fabc946a74032b 100644
--- a/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.h
+++ b/ReactCommon/fabric/components/scrollview/ScrollViewShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #pragma once
 
-#include <fabric/components/scrollview/ScrollViewEventEmitter.h>
-#include <fabric/components/scrollview/ScrollViewProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
-#include <fabric/core/LayoutContext.h>
+#include <react/components/scrollview/ScrollViewEventEmitter.h>
+#include <react/components/scrollview/ScrollViewProps.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
+#include <react/core/LayoutContext.h>
 
 namespace facebook {
 namespace react {
@@ -20,23 +20,18 @@ extern const char ScrollViewComponentName[];
 /*
  * `ShadowNode` for <ScrollView> component.
  */
-class ScrollViewShadowNode final:
-  public ConcreteViewShadowNode<
-    ScrollViewComponentName,
-    ScrollViewProps,
-    ScrollViewEventEmitter
-  > {
-
-public:
-
+class ScrollViewShadowNode final : public ConcreteViewShadowNode<
+                                       ScrollViewComponentName,
+                                       ScrollViewProps,
+                                       ScrollViewEventEmitter> {
+ public:
   using ConcreteViewShadowNode::ConcreteViewShadowNode;
 
 #pragma mark - LayoutableShadowNode
 
   void layout(LayoutContext layoutContext) override;
 
-private:
-
+ private:
   void updateLocalData();
 };
 
diff --git a/ReactCommon/fabric/components/scrollview/conversions.h b/ReactCommon/fabric/components/scrollview/conversions.h
index e7f6ba0f4ea7bf..d5c2d5acdfb1ea 100644
--- a/ReactCommon/fabric/components/scrollview/conversions.h
+++ b/ReactCommon/fabric/components/scrollview/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,57 +7,99 @@
 
 #pragma once
 
-#include <fabric/components/scrollview/primitives.h>
 #include <folly/dynamic.h>
+#include <react/components/scrollview/primitives.h>
 
 namespace facebook {
 namespace react {
 
-inline void fromDynamic(const folly::dynamic &value, ScrollViewSnapToAlignment &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    ScrollViewSnapToAlignment &result) {
   auto string = value.asString();
-  if (string == "start") { result = ScrollViewSnapToAlignment::Start; return; }
-  if (string == "center") { result = ScrollViewSnapToAlignment::Center; return; }
-  if (string == "end") { result = ScrollViewSnapToAlignment::End; return; }
+  if (string == "start") {
+    result = ScrollViewSnapToAlignment::Start;
+    return;
+  }
+  if (string == "center") {
+    result = ScrollViewSnapToAlignment::Center;
+    return;
+  }
+  if (string == "end") {
+    result = ScrollViewSnapToAlignment::End;
+    return;
+  }
   abort();
 }
 
-inline void fromDynamic(const folly::dynamic &value, ScrollViewIndicatorStyle &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    ScrollViewIndicatorStyle &result) {
   auto string = value.asString();
-  if (string == "default") { result = ScrollViewIndicatorStyle::Default; return; }
-  if (string == "black") { result = ScrollViewIndicatorStyle::Black; return; }
-  if (string == "white") { result = ScrollViewIndicatorStyle::White; return; }
+  if (string == "default") {
+    result = ScrollViewIndicatorStyle::Default;
+    return;
+  }
+  if (string == "black") {
+    result = ScrollViewIndicatorStyle::Black;
+    return;
+  }
+  if (string == "white") {
+    result = ScrollViewIndicatorStyle::White;
+    return;
+  }
   abort();
 }
 
-inline void fromDynamic(const folly::dynamic &value, ScrollViewKeyboardDismissMode &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    ScrollViewKeyboardDismissMode &result) {
   auto string = value.asString();
-  if (string == "none") { result = ScrollViewKeyboardDismissMode::None; return; }
-  if (string == "on-drag") { result = ScrollViewKeyboardDismissMode::OnDrag; return; }
-  if (string == "interactive") { result = ScrollViewKeyboardDismissMode::Interactive; return; }
+  if (string == "none") {
+    result = ScrollViewKeyboardDismissMode::None;
+    return;
+  }
+  if (string == "on-drag") {
+    result = ScrollViewKeyboardDismissMode::OnDrag;
+    return;
+  }
+  if (string == "interactive") {
+    result = ScrollViewKeyboardDismissMode::Interactive;
+    return;
+  }
   abort();
 }
 
 inline std::string toString(const ScrollViewSnapToAlignment &value) {
   switch (value) {
-    case ScrollViewSnapToAlignment::Start: return "start";
-    case ScrollViewSnapToAlignment::Center: return "center";
-    case ScrollViewSnapToAlignment::End: return "end";
+    case ScrollViewSnapToAlignment::Start:
+      return "start";
+    case ScrollViewSnapToAlignment::Center:
+      return "center";
+    case ScrollViewSnapToAlignment::End:
+      return "end";
   }
 }
 
 inline std::string toString(const ScrollViewIndicatorStyle &value) {
   switch (value) {
-    case ScrollViewIndicatorStyle::Default: return "default";
-    case ScrollViewIndicatorStyle::Black: return "black";
-    case ScrollViewIndicatorStyle::White: return "white";
+    case ScrollViewIndicatorStyle::Default:
+      return "default";
+    case ScrollViewIndicatorStyle::Black:
+      return "black";
+    case ScrollViewIndicatorStyle::White:
+      return "white";
   }
 }
 
 inline std::string toString(const ScrollViewKeyboardDismissMode &value) {
   switch (value) {
-    case ScrollViewKeyboardDismissMode::None: return "none";
-    case ScrollViewKeyboardDismissMode::OnDrag: return "on-drag";
-    case ScrollViewKeyboardDismissMode::Interactive: return "interactive";
+    case ScrollViewKeyboardDismissMode::None:
+      return "none";
+    case ScrollViewKeyboardDismissMode::OnDrag:
+      return "on-drag";
+    case ScrollViewKeyboardDismissMode::Interactive:
+      return "interactive";
   }
 }
 
diff --git a/ReactCommon/fabric/components/scrollview/primitives.h b/ReactCommon/fabric/components/scrollview/primitives.h
index 73d1aa210f5012..81ceb0ded700ba 100644
--- a/ReactCommon/fabric/components/scrollview/primitives.h
+++ b/ReactCommon/fabric/components/scrollview/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,23 +10,11 @@
 namespace facebook {
 namespace react {
 
-enum class ScrollViewSnapToAlignment {
-  Start,
-  Center,
-  End
-};
+enum class ScrollViewSnapToAlignment { Start, Center, End };
 
-enum class ScrollViewIndicatorStyle {
-  Default,
-  Black,
-  White
-};
+enum class ScrollViewIndicatorStyle { Default, Black, White };
 
-enum class ScrollViewKeyboardDismissMode {
-  None,
-  OnDrag,
-  Interactive
-};
+enum class ScrollViewKeyboardDismissMode { None, OnDrag, Interactive };
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/scrollview/tests/ScrollViewTest.cpp b/ReactCommon/fabric/components/scrollview/tests/ScrollViewTest.cpp
index 7b7e23fea4102e..c95dea07aa4fab 100644
--- a/ReactCommon/fabric/components/scrollview/tests/ScrollViewTest.cpp
+++ b/ReactCommon/fabric/components/scrollview/tests/ScrollViewTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/switch/BUCK b/ReactCommon/fabric/components/switch/BUCK
index 52d146dc4cf294..8babffce965de4 100644
--- a/ReactCommon/fabric/components/switch/BUCK
+++ b/ReactCommon/fabric/components/switch/BUCK
@@ -1,14 +1,14 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
+    "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
-    "subdir_glob",
     "get_apple_inspector_flags",
     "react_native_xplat_target",
-    "fb_xplat_cxx_test",
     "rn_xplat_cxx_library",
+    "subdir_glob",
 )
 
 APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
@@ -25,7 +25,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/components/switch",
+        prefix = "react/components/switch",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/switch/SwitchComponentDescriptor.h b/ReactCommon/fabric/components/switch/SwitchComponentDescriptor.h
index 1ea9e4582c2b86..6f40f83c5b0f6a 100644
--- a/ReactCommon/fabric/components/switch/SwitchComponentDescriptor.h
+++ b/ReactCommon/fabric/components/switch/SwitchComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/components/switch/SwitchShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/switch/SwitchShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
diff --git a/ReactCommon/fabric/components/switch/SwitchEventEmitter.cpp b/ReactCommon/fabric/components/switch/SwitchEventEmitter.cpp
index 680f1dbd5e3d81..514a30b31361e7 100644
--- a/ReactCommon/fabric/components/switch/SwitchEventEmitter.cpp
+++ b/ReactCommon/fabric/components/switch/SwitchEventEmitter.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/switch/SwitchEventEmitter.h b/ReactCommon/fabric/components/switch/SwitchEventEmitter.h
index 6e2a0c68d17217..1b0dd263f6ca77 100644
--- a/ReactCommon/fabric/components/switch/SwitchEventEmitter.h
+++ b/ReactCommon/fabric/components/switch/SwitchEventEmitter.h
@@ -1,21 +1,18 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 #pragma once
 
-#include <fabric/components/view/ViewEventEmitter.h>
+#include <react/components/view/ViewEventEmitter.h>
 
 namespace facebook {
 namespace react {
 
-class SwitchEventEmitter:
-  public ViewEventEmitter {
-
-public:
-
+class SwitchEventEmitter : public ViewEventEmitter {
+ public:
   using ViewEventEmitter::ViewEventEmitter;
 
   void onChange(const bool &value) const;
diff --git a/ReactCommon/fabric/components/switch/SwitchProps.cpp b/ReactCommon/fabric/components/switch/SwitchProps.cpp
index 9f80943c6fa9cc..3cbba88a97aab3 100644
--- a/ReactCommon/fabric/components/switch/SwitchProps.cpp
+++ b/ReactCommon/fabric/components/switch/SwitchProps.cpp
@@ -1,23 +1,38 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/switch/SwitchProps.h>
-#include <fabric/core/propsConversions.h>
+#include <react/components/switch/SwitchProps.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-SwitchProps::SwitchProps(const SwitchProps &sourceProps, const RawProps &rawProps):
-  ViewProps(sourceProps, rawProps),
-  value(convertRawProp(rawProps, "value", sourceProps.value, value)),
-  disabled(convertRawProp(rawProps, "disabled", sourceProps.disabled, disabled)),
-  tintColor(convertRawProp(rawProps, "tintColor", sourceProps.tintColor, tintColor)),
-  onTintColor(convertRawProp(rawProps, "onTintColor", sourceProps.onTintColor, onTintColor)),
-  thumbTintColor(convertRawProp(rawProps, "thumbTintColor", sourceProps.thumbTintColor, thumbTintColor)) {}
+SwitchProps::SwitchProps(
+    const SwitchProps &sourceProps,
+    const RawProps &rawProps)
+    : ViewProps(sourceProps, rawProps),
+      value(convertRawProp(rawProps, "value", sourceProps.value, value)),
+      disabled(
+          convertRawProp(rawProps, "disabled", sourceProps.disabled, disabled)),
+      tintColor(convertRawProp(
+          rawProps,
+          "tintColor",
+          sourceProps.tintColor,
+          tintColor)),
+      onTintColor(convertRawProp(
+          rawProps,
+          "onTintColor",
+          sourceProps.onTintColor,
+          onTintColor)),
+      thumbTintColor(convertRawProp(
+          rawProps,
+          "thumbTintColor",
+          sourceProps.thumbTintColor,
+          thumbTintColor)) {}
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/switch/SwitchProps.h b/ReactCommon/fabric/components/switch/SwitchProps.h
index 83f4aa21266c3b..66c658125c1914 100644
--- a/ReactCommon/fabric/components/switch/SwitchProps.h
+++ b/ReactCommon/fabric/components/switch/SwitchProps.h
@@ -1,31 +1,29 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/graphics/Color.h>
+#include <react/components/view/ViewProps.h>
+#include <react/graphics/Color.h>
 
 namespace facebook {
 namespace react {
 
 // TODO (T28334063): Consider for codegen.
-class SwitchProps final:
-  public ViewProps {
-
-public:
+class SwitchProps final : public ViewProps {
+ public:
   SwitchProps() = default;
   SwitchProps(const SwitchProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const bool value {false};
-  const bool disabled {false};
-  const SharedColor tintColor {};
-  const SharedColor onTintColor {};
-  const SharedColor thumbTintColor {};
+  const bool value{false};
+  const bool disabled{false};
+  const SharedColor tintColor{};
+  const SharedColor onTintColor{};
+  const SharedColor thumbTintColor{};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/switch/SwitchShadowNode.cpp b/ReactCommon/fabric/components/switch/SwitchShadowNode.cpp
index 9324baea28d024..3fba6a84aae269 100644
--- a/ReactCommon/fabric/components/switch/SwitchShadowNode.cpp
+++ b/ReactCommon/fabric/components/switch/SwitchShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/switch/SwitchShadowNode.h b/ReactCommon/fabric/components/switch/SwitchShadowNode.h
index 076b9af9fbf80c..939a32d3b804c3 100644
--- a/ReactCommon/fabric/components/switch/SwitchShadowNode.h
+++ b/ReactCommon/fabric/components/switch/SwitchShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #pragma once
 
-#include <fabric/components/switch/SwitchEventEmitter.h>
-#include <fabric/components/switch/SwitchProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
+#include <react/components/switch/SwitchEventEmitter.h>
+#include <react/components/switch/SwitchProps.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -19,12 +19,10 @@ extern const char SwitchComponentName[];
 /*
  * `ShadowNode` for <Switch> component.
  */
-using SwitchShadowNode =
-  ConcreteViewShadowNode<
+using SwitchShadowNode = ConcreteViewShadowNode<
     SwitchComponentName,
     SwitchProps,
-    SwitchEventEmitter
-  >;
+    SwitchEventEmitter>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/switch/tests/SwitchTest.cpp b/ReactCommon/fabric/components/switch/tests/SwitchTest.cpp
index a55a5783d83c10..2a15830d82e902 100644
--- a/ReactCommon/fabric/components/switch/tests/SwitchTest.cpp
+++ b/ReactCommon/fabric/components/switch/tests/SwitchTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/text/BUCK b/ReactCommon/fabric/components/text/BUCK
index fdba22d649a52a..dff38f26b23924 100644
--- a/ReactCommon/fabric/components/text/BUCK
+++ b/ReactCommon/fabric/components/text/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -32,7 +32,7 @@ rn_xplat_cxx_library(
             ("text", "*.h"),
             ("rawtext", "*.h"),
         ],
-        prefix = "fabric/components/text",
+        prefix = "react/components/text",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -67,6 +67,7 @@ rn_xplat_cxx_library(
         react_native_xplat_target("fabric/graphics:graphics"),
         react_native_xplat_target("fabric/textlayoutmanager:textlayoutmanager"),
         react_native_xplat_target("fabric/components/view:view"),
+        react_native_xplat_target("fabric/uimanager:uimanager"),
     ],
 )
 
@@ -81,7 +82,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/components/text/basetext/BaseTextProps.cpp b/ReactCommon/fabric/components/text/basetext/BaseTextProps.cpp
index 2b3a1e9c79b182..0383bfe23b9965 100644
--- a/ReactCommon/fabric/components/text/basetext/BaseTextProps.cpp
+++ b/ReactCommon/fabric/components/text/basetext/BaseTextProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,62 +7,100 @@
 
 #include "BaseTextProps.h"
 
-#include <fabric/attributedstring/conversions.h>
-#include <fabric/core/propsConversions.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
-#include <fabric/graphics/conversions.h>
+#include <react/attributedstring/conversions.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/DebugStringConvertibleItem.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
 
-static TextAttributes convertRawProp(const RawProps &rawProps, const TextAttributes defaultTextAttributes) {
-  TextAttributes textAttributes;
+static TextAttributes convertRawProp(
+    const RawProps &rawProps,
+    const TextAttributes defaultTextAttributes) {
+  auto textAttributes = TextAttributes{};
 
   // Color
-  textAttributes.foregroundColor = convertRawProp(rawProps, "color", defaultTextAttributes.foregroundColor);
-  textAttributes.backgroundColor = convertRawProp(rawProps, "backgroundColor", defaultTextAttributes.backgroundColor);
-  textAttributes.opacity = convertRawProp(rawProps, "opacity", defaultTextAttributes.opacity);
+  textAttributes.foregroundColor =
+      convertRawProp(rawProps, "color", defaultTextAttributes.foregroundColor);
+  textAttributes.backgroundColor = convertRawProp(
+      rawProps, "backgroundColor", defaultTextAttributes.backgroundColor);
+  textAttributes.opacity =
+      convertRawProp(rawProps, "opacity", defaultTextAttributes.opacity);
 
   // Font
-  textAttributes.fontFamily = convertRawProp(rawProps, "fontFamily", defaultTextAttributes.fontFamily);
-  textAttributes.fontSize = convertRawProp(rawProps, "fontSize", defaultTextAttributes.fontSize);
-  textAttributes.fontSizeMultiplier = convertRawProp(rawProps, "fontSizeMultiplier", defaultTextAttributes.fontSizeMultiplier);
-  textAttributes.fontWeight = convertRawProp(rawProps, "fontWeight", defaultTextAttributes.fontWeight);
-  textAttributes.fontStyle = convertRawProp(rawProps, "fontStyle", defaultTextAttributes.fontStyle);
-  textAttributes.fontVariant = convertRawProp(rawProps, "fontVariant", defaultTextAttributes.fontVariant);
-  textAttributes.allowFontScaling = convertRawProp(rawProps, "allowFontScaling", defaultTextAttributes.allowFontScaling);
-  textAttributes.letterSpacing = convertRawProp(rawProps, "letterSpacing", defaultTextAttributes.letterSpacing);
+  textAttributes.fontFamily =
+      convertRawProp(rawProps, "fontFamily", defaultTextAttributes.fontFamily);
+  textAttributes.fontSize =
+      convertRawProp(rawProps, "fontSize", defaultTextAttributes.fontSize);
+  textAttributes.fontSizeMultiplier = convertRawProp(
+      rawProps, "fontSizeMultiplier", defaultTextAttributes.fontSizeMultiplier);
+  textAttributes.fontWeight =
+      convertRawProp(rawProps, "fontWeight", defaultTextAttributes.fontWeight);
+  textAttributes.fontStyle =
+      convertRawProp(rawProps, "fontStyle", defaultTextAttributes.fontStyle);
+  textAttributes.fontVariant = convertRawProp(
+      rawProps, "fontVariant", defaultTextAttributes.fontVariant);
+  textAttributes.allowFontScaling = convertRawProp(
+      rawProps, "allowFontScaling", defaultTextAttributes.allowFontScaling);
+  textAttributes.letterSpacing = convertRawProp(
+      rawProps, "letterSpacing", defaultTextAttributes.letterSpacing);
 
   // Paragraph
-  textAttributes.lineHeight = convertRawProp(rawProps, "lineHeight", defaultTextAttributes.lineHeight);
-  textAttributes.alignment = convertRawProp(rawProps, "alignment", defaultTextAttributes.alignment);
-  textAttributes.baseWritingDirection = convertRawProp(rawProps, "baseWritingDirection", defaultTextAttributes.baseWritingDirection);
+  textAttributes.lineHeight =
+      convertRawProp(rawProps, "lineHeight", defaultTextAttributes.lineHeight);
+  textAttributes.alignment =
+      convertRawProp(rawProps, "alignment", defaultTextAttributes.alignment);
+  textAttributes.baseWritingDirection = convertRawProp(
+      rawProps,
+      "baseWritingDirection",
+      defaultTextAttributes.baseWritingDirection);
 
   // Decoration
-  textAttributes.textDecorationColor = convertRawProp(rawProps, "textDecorationColor", defaultTextAttributes.textDecorationColor);
-  textAttributes.textDecorationLineType = convertRawProp(rawProps, "textDecorationLineType", defaultTextAttributes.textDecorationLineType);
-  textAttributes.textDecorationLineStyle = convertRawProp(rawProps, "textDecorationLineStyle", defaultTextAttributes.textDecorationLineStyle);
-  textAttributes.textDecorationLinePattern = convertRawProp(rawProps, "textDecorationLinePattern", defaultTextAttributes.textDecorationLinePattern);
+  textAttributes.textDecorationColor = convertRawProp(
+      rawProps,
+      "textDecorationColor",
+      defaultTextAttributes.textDecorationColor);
+  textAttributes.textDecorationLineType = convertRawProp(
+      rawProps,
+      "textDecorationLineType",
+      defaultTextAttributes.textDecorationLineType);
+  textAttributes.textDecorationLineStyle = convertRawProp(
+      rawProps,
+      "textDecorationLineStyle",
+      defaultTextAttributes.textDecorationLineStyle);
+  textAttributes.textDecorationLinePattern = convertRawProp(
+      rawProps,
+      "textDecorationLinePattern",
+      defaultTextAttributes.textDecorationLinePattern);
 
   // Shadow
-  textAttributes.textShadowOffset = convertRawProp(rawProps, "textShadowOffset", defaultTextAttributes.textShadowOffset);
-  textAttributes.textShadowRadius = convertRawProp(rawProps, "textShadowRadius", defaultTextAttributes.textShadowRadius);
-  textAttributes.textShadowColor = convertRawProp(rawProps, "textShadowColor", defaultTextAttributes.textShadowColor);
+  textAttributes.textShadowOffset = convertRawProp(
+      rawProps, "textShadowOffset", defaultTextAttributes.textShadowOffset);
+  textAttributes.textShadowRadius = convertRawProp(
+      rawProps, "textShadowRadius", defaultTextAttributes.textShadowRadius);
+  textAttributes.textShadowColor = convertRawProp(
+      rawProps, "textShadowColor", defaultTextAttributes.textShadowColor);
 
   // Special
-  textAttributes.isHighlighted = convertRawProp(rawProps, "isHighlighted", defaultTextAttributes.isHighlighted);
+  textAttributes.isHighlighted = convertRawProp(
+      rawProps, "isHighlighted", defaultTextAttributes.isHighlighted);
 
   return textAttributes;
 }
 
-BaseTextProps::BaseTextProps(const BaseTextProps &sourceProps, const RawProps &rawProps):
-  textAttributes(convertRawProp(rawProps, sourceProps.textAttributes)) {};
+BaseTextProps::BaseTextProps(
+    const BaseTextProps &sourceProps,
+    const RawProps &rawProps)
+    : textAttributes(convertRawProp(rawProps, sourceProps.textAttributes)){};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList BaseTextProps::getDebugProps() const {
   return textAttributes.getDebugProps();
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/basetext/BaseTextProps.h b/ReactCommon/fabric/components/text/basetext/BaseTextProps.h
index 6e5026a594db9b..25968c2063d34e 100644
--- a/ReactCommon/fabric/components/text/basetext/BaseTextProps.h
+++ b/ReactCommon/fabric/components/text/basetext/BaseTextProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #pragma once
 
-#include <fabric/attributedstring/TextAttributes.h>
-#include <fabric/core/Props.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/core/Props.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -20,18 +20,19 @@ namespace react {
  * that can have text attributes (such as Text and Paragraph).
  */
 class BaseTextProps {
-public:
-
+ public:
   BaseTextProps() = default;
   BaseTextProps(const BaseTextProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const TextAttributes textAttributes {};
+  const TextAttributes textAttributes{};
 
 #pragma mark - DebugStringConvertible (partially)
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.cpp b/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.cpp
index 402ab2280ab0a5..7c7036fbc4a847 100644
--- a/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.cpp
+++ b/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,43 +7,47 @@
 
 #include "BaseTextShadowNode.h"
 
-#include <fabric/components/text/RawTextShadowNode.h>
-#include <fabric/components/text/RawTextProps.h>
-#include <fabric/components/text/TextShadowNode.h>
-#include <fabric/components/text/TextProps.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
+#include <react/components/text/RawTextProps.h>
+#include <react/components/text/RawTextShadowNode.h>
+#include <react/components/text/TextProps.h>
+#include <react/components/text/TextShadowNode.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 
 namespace facebook {
 namespace react {
 
 AttributedString BaseTextShadowNode::getAttributedString(
-  const TextAttributes &textAttributes,
-  const SharedShadowNodeList &childNodes
-) const {
-  AttributedString attributedString;
+    const TextAttributes &textAttributes,
+    const SharedShadowNode &parentNode) const {
+  auto attributedString = AttributedString{};
 
-  for (const auto &childNode : childNodes) {
+  for (const auto &childNode : parentNode->getChildren()) {
     // RawShadowNode
-    auto rawTextShadowNode = std::dynamic_pointer_cast<const RawTextShadowNode>(childNode);
+    auto rawTextShadowNode =
+        std::dynamic_pointer_cast<const RawTextShadowNode>(childNode);
     if (rawTextShadowNode) {
-      AttributedString::Fragment fragment;
+      auto fragment = AttributedString::Fragment{};
       fragment.string = rawTextShadowNode->getProps()->text;
       fragment.textAttributes = textAttributes;
+      fragment.parentShadowNode = parentNode;
       attributedString.appendFragment(fragment);
       continue;
     }
 
     // TextShadowNode
-    auto textShadowNode = std::dynamic_pointer_cast<const TextShadowNode>(childNode);
+    auto textShadowNode =
+        std::dynamic_pointer_cast<const TextShadowNode>(childNode);
     if (textShadowNode) {
-      TextAttributes localTextAttributes = textAttributes;
+      auto localTextAttributes = textAttributes;
       localTextAttributes.apply(textShadowNode->getProps()->textAttributes);
-      attributedString.appendAttributedString(textShadowNode->getAttributedString(localTextAttributes, textShadowNode->getChildren()));
+      attributedString.appendAttributedString(
+          textShadowNode->getAttributedString(
+              localTextAttributes, textShadowNode));
       continue;
     }
 
     // Any other kind of ShadowNode
-    AttributedString::Fragment fragment;
+    auto fragment = AttributedString::Fragment{};
     fragment.shadowNode = childNode;
     fragment.textAttributes = textAttributes;
     attributedString.appendFragment(fragment);
diff --git a/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.h b/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.h
index 3d1a8fd8435319..7da118643cd004 100644
--- a/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.h
+++ b/ReactCommon/fabric/components/text/basetext/BaseTextShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/attributedstring/AttributedString.h>
-#include <fabric/attributedstring/TextAttributes.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/TextAttributes.h>
 
 namespace facebook {
 namespace react {
@@ -18,15 +18,13 @@ namespace react {
  * such as Text and Paragraph (but not RawText).
  */
 class BaseTextShadowNode {
-public:
-
+ public:
   /*
    * Returns a `AttributedString` which represents text content of the node.
    */
   AttributedString getAttributedString(
-    const TextAttributes &baseTextAttributes,
-    const SharedShadowNodeList &childNodes
-  ) const;
+      const TextAttributes &baseTextAttributes,
+      const SharedShadowNode &parentNode) const;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphComponentDescriptor.h b/ReactCommon/fabric/components/text/paragraph/ParagraphComponentDescriptor.h
index 3ff916b5580cec..9944483a72cc27 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphComponentDescriptor.h
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,10 @@
 
 #pragma once
 
-#include <fabric/components/text/ParagraphShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
-#include <fabric/textlayoutmanager/TextLayoutManager.h>
+#include <react/components/text/ParagraphShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
+#include <react/textlayoutmanager/TextLayoutManager.h>
+#include <react/uimanager/ContextContainer.h>
 
 namespace facebook {
 namespace react {
@@ -17,23 +18,24 @@ namespace react {
 /*
  * Descriptor for <Paragraph> component.
  */
-class ParagraphComponentDescriptor final:
-  public ConcreteComponentDescriptor<ParagraphShadowNode> {
-
-public:
-
-  ParagraphComponentDescriptor(SharedEventDispatcher eventDispatcher):
-    ConcreteComponentDescriptor<ParagraphShadowNode>(eventDispatcher) {
+class ParagraphComponentDescriptor final
+    : public ConcreteComponentDescriptor<ParagraphShadowNode> {
+ public:
+  ParagraphComponentDescriptor(
+      SharedEventDispatcher eventDispatcher,
+      const SharedContextContainer &contextContainer)
+      : ConcreteComponentDescriptor<ParagraphShadowNode>(eventDispatcher) {
     // Every single `ParagraphShadowNode` will have a reference to
     // a shared `TextLayoutManager`.
-    textLayoutManager_ = std::make_shared<TextLayoutManager>();
+    textLayoutManager_ = std::make_shared<TextLayoutManager>(contextContainer);
   }
 
   void adopt(UnsharedShadowNode shadowNode) const override {
     ConcreteComponentDescriptor::adopt(shadowNode);
 
     assert(std::dynamic_pointer_cast<ParagraphShadowNode>(shadowNode));
-    auto paragraphShadowNode = std::static_pointer_cast<ParagraphShadowNode>(shadowNode);
+    auto paragraphShadowNode =
+        std::static_pointer_cast<ParagraphShadowNode>(shadowNode);
 
     // `ParagraphShadowNode` uses `TextLayoutManager` to measure text content
     // and communicate text rendering metrics to mounting layer.
@@ -44,8 +46,7 @@ class ParagraphComponentDescriptor final:
     paragraphShadowNode->enableMeasurement();
   }
 
-private:
-
+ private:
   SharedTextLayoutManager textLayoutManager_;
 };
 
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.cpp b/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.cpp
index 30fc681fd041a2..2c562ea30dec8d 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.cpp
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,8 @@
 
 #include "ParagraphLocalData.h"
 
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/components/text/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
@@ -16,7 +17,8 @@ AttributedString ParagraphLocalData::getAttributedString() const {
   return attributedString_;
 }
 
-void ParagraphLocalData::setAttributedString(AttributedString attributedString) {
+void ParagraphLocalData::setAttributedString(
+    AttributedString attributedString) {
   ensureUnsealed();
   attributedString_ = attributedString;
 }
@@ -25,22 +27,28 @@ SharedTextLayoutManager ParagraphLocalData::getTextLayoutManager() const {
   return textLayoutManager_;
 }
 
-void ParagraphLocalData::setTextLayoutManager(SharedTextLayoutManager textLayoutManager) {
+void ParagraphLocalData::setTextLayoutManager(
+    SharedTextLayoutManager textLayoutManager) {
   ensureUnsealed();
   textLayoutManager_ = textLayoutManager;
 }
 
+folly::dynamic ParagraphLocalData::getDynamic() const {
+  return toDynamic(*this);
+}
+
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 std::string ParagraphLocalData::getDebugName() const {
   return "ParagraphLocalData";
 }
 
 SharedDebugStringConvertibleList ParagraphLocalData::getDebugProps() const {
   return {
-    debugStringConvertibleItem("attributedString", attributedString_, "")
-  };
+      debugStringConvertibleItem("attributedString", attributedString_, "")};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.h b/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.h
index 7f3ad4007a3399..7005496f94c3d6 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.h
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphLocalData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #pragma once
 
-#include <fabric/attributedstring/AttributedString.h>
-#include <fabric/core/LocalData.h>
-#include <fabric/textlayoutmanager/TextLayoutManager.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/core/LocalData.h>
+#include <react/textlayoutmanager/TextLayoutManager.h>
 
 namespace facebook {
 namespace react {
@@ -22,11 +22,8 @@ using SharedParagraphLocalData = std::shared_ptr<const ParagraphLocalData>;
  * LocalData for <Paragraph> component.
  * Represents what to render and how to render.
  */
-class ParagraphLocalData:
-  public LocalData {
-
-public:
-
+class ParagraphLocalData : public LocalData {
+ public:
   /*
    * All content of <Paragraph> component represented as an `AttributedString`.
    */
@@ -41,13 +38,16 @@ class ParagraphLocalData:
   SharedTextLayoutManager getTextLayoutManager() const;
   void setTextLayoutManager(SharedTextLayoutManager textLayoutManager);
 
+  folly::dynamic getDynamic() const override;
+
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   std::string getDebugName() const override;
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 
-private:
-
+ private:
   AttributedString attributedString_;
   SharedTextLayoutManager textLayoutManager_;
 };
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphProps.cpp b/ReactCommon/fabric/components/text/paragraph/ParagraphProps.cpp
index ca4ff847c05ea3..d8135cd845a2e7 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphProps.cpp
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,42 +7,62 @@
 
 #include "ParagraphProps.h"
 
-#include <fabric/attributedstring/conversions.h>
-#include <fabric/core/propsConversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/attributedstring/conversions.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
-static ParagraphAttributes convertRawProp(const RawProps &rawProps, const ParagraphAttributes &defaultParagraphAttributes) {
-  ParagraphAttributes paragraphAttributes;
+static ParagraphAttributes convertRawProp(
+    const RawProps &rawProps,
+    const ParagraphAttributes &defaultParagraphAttributes) {
+  auto paragraphAttributes = ParagraphAttributes{};
 
-  paragraphAttributes.maximumNumberOfLines = convertRawProp(rawProps, "numberOfLines", defaultParagraphAttributes.maximumNumberOfLines);
-  paragraphAttributes.ellipsizeMode = convertRawProp(rawProps, "ellipsizeMode", defaultParagraphAttributes.ellipsizeMode);
-  paragraphAttributes.adjustsFontSizeToFit = convertRawProp(rawProps, "adjustsFontSizeToFit", defaultParagraphAttributes.adjustsFontSizeToFit);
-  paragraphAttributes.minimumFontSize = convertRawProp(rawProps, "minimumFontSize", defaultParagraphAttributes.minimumFontSize, std::numeric_limits<Float>::quiet_NaN());
-  paragraphAttributes.maximumFontSize = convertRawProp(rawProps, "maximumFontSize", defaultParagraphAttributes.maximumFontSize, std::numeric_limits<Float>::quiet_NaN());
+  paragraphAttributes.maximumNumberOfLines = convertRawProp(
+      rawProps,
+      "numberOfLines",
+      defaultParagraphAttributes.maximumNumberOfLines);
+  paragraphAttributes.ellipsizeMode = convertRawProp(
+      rawProps, "ellipsizeMode", defaultParagraphAttributes.ellipsizeMode);
+  paragraphAttributes.adjustsFontSizeToFit = convertRawProp(
+      rawProps,
+      "adjustsFontSizeToFit",
+      defaultParagraphAttributes.adjustsFontSizeToFit);
+  paragraphAttributes.minimumFontSize = convertRawProp(
+      rawProps,
+      "minimumFontSize",
+      defaultParagraphAttributes.minimumFontSize,
+      std::numeric_limits<Float>::quiet_NaN());
+  paragraphAttributes.maximumFontSize = convertRawProp(
+      rawProps,
+      "maximumFontSize",
+      defaultParagraphAttributes.maximumFontSize,
+      std::numeric_limits<Float>::quiet_NaN());
 
   return paragraphAttributes;
 }
 
-ParagraphProps::ParagraphProps(const ParagraphProps &sourceProps, const RawProps &rawProps):
-  ViewProps(sourceProps, rawProps),
-  BaseTextProps(sourceProps, rawProps),
-  paragraphAttributes(convertRawProp(rawProps, sourceProps.paragraphAttributes)),
-  isSelectable(convertRawProp(rawProps, "selectable", sourceProps.isSelectable)) {};
+ParagraphProps::ParagraphProps(
+    const ParagraphProps &sourceProps,
+    const RawProps &rawProps)
+    : ViewProps(sourceProps, rawProps),
+      BaseTextProps(sourceProps, rawProps),
+      paragraphAttributes(
+          convertRawProp(rawProps, sourceProps.paragraphAttributes)),
+      isSelectable(
+          convertRawProp(rawProps, "selectable", sourceProps.isSelectable)){};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList ParagraphProps::getDebugProps() const {
-  return
-    ViewProps::getDebugProps() +
-    BaseTextProps::getDebugProps() +
-    paragraphAttributes.getDebugProps() +
-    SharedDebugStringConvertibleList {
-      debugStringConvertibleItem("isSelectable", isSelectable)
-    };
+  return ViewProps::getDebugProps() + BaseTextProps::getDebugProps() +
+      paragraphAttributes.getDebugProps() +
+      SharedDebugStringConvertibleList{
+          debugStringConvertibleItem("isSelectable", isSelectable)};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphProps.h b/ReactCommon/fabric/components/text/paragraph/ParagraphProps.h
index 2f46822cda8893..1e1ca67e15b97f 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphProps.h
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,10 +10,10 @@
 #include <limits>
 #include <memory>
 
-#include <fabric/attributedstring/ParagraphAttributes.h>
-#include <fabric/components/text/BaseTextProps.h>
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/core/Props.h>
+#include <react/attributedstring/ParagraphAttributes.h>
+#include <react/components/text/BaseTextProps.h>
+#include <react/components/view/ViewProps.h>
+#include <react/core/Props.h>
 
 namespace facebook {
 namespace react {
@@ -23,30 +23,29 @@ namespace react {
  * Most of the props are directly stored in composed `ParagraphAttributes`
  * object.
  */
-class ParagraphProps:
-  public ViewProps,
-  public BaseTextProps {
-
-public:
+class ParagraphProps : public ViewProps, public BaseTextProps {
+ public:
   ParagraphProps() = default;
   ParagraphProps(const ParagraphProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
   /*
-   * Contains all prop values that affect visual representation of the paragraph.
+   * Contains all prop values that affect visual representation of the
+   * paragraph.
    */
-  const ParagraphAttributes paragraphAttributes {};
+  const ParagraphAttributes paragraphAttributes{};
 
   /*
    * Defines can the text be selected (and copied) or not.
    */
-  const bool isSelectable {};
+  const bool isSelectable{};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
-
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.cpp b/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.cpp
index f249338d99b32a..d1eba8033424de 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.cpp
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,23 +16,33 @@ const char ParagraphComponentName[] = "Paragraph";
 
 AttributedString ParagraphShadowNode::getAttributedString() const {
   if (!cachedAttributedString_.has_value()) {
-    cachedAttributedString_ =
-      BaseTextShadowNode::getAttributedString(getProps()->textAttributes, getChildren());
+    auto textAttributes = TextAttributes::defaultTextAttributes();
+    textAttributes.apply(getProps()->textAttributes);
+
+    cachedAttributedString_ = BaseTextShadowNode::getAttributedString(
+        textAttributes, shared_from_this());
   }
 
   return cachedAttributedString_.value();
 }
 
-void ParagraphShadowNode::setTextLayoutManager(SharedTextLayoutManager textLayoutManager) {
+void ParagraphShadowNode::setTextLayoutManager(
+    SharedTextLayoutManager textLayoutManager) {
   ensureUnsealed();
   textLayoutManager_ = textLayoutManager;
 }
 
-void ParagraphShadowNode::updateLocalData() {
+void ParagraphShadowNode::updateLocalDataIfNeeded() {
   ensureUnsealed();
 
+  auto attributedString = getAttributedString();
+  auto currentLocalData = std::static_pointer_cast<const ParagraphLocalData>(getLocalData());
+  if (currentLocalData && currentLocalData->getAttributedString() == attributedString) {
+    return;
+  }
+
   auto localData = std::make_shared<ParagraphLocalData>();
-  localData->setAttributedString(getAttributedString());
+  localData->setAttributedString(std::move(attributedString));
   localData->setTextLayoutManager(textLayoutManager_);
   setLocalData(localData);
 }
@@ -41,14 +51,14 @@ void ParagraphShadowNode::updateLocalData() {
 
 Size ParagraphShadowNode::measure(LayoutConstraints layoutConstraints) const {
   return textLayoutManager_->measure(
-    getAttributedString(),
-    getProps()->paragraphAttributes,
-    layoutConstraints
-  );
+      getTag(),
+      getAttributedString(),
+      getProps()->paragraphAttributes,
+      layoutConstraints);
 }
 
 void ParagraphShadowNode::layout(LayoutContext layoutContext) {
-  updateLocalData();
+  updateLocalDataIfNeeded();
   ConcreteViewShadowNode::layout(layoutContext);
 }
 
diff --git a/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.h b/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.h
index 4a1ab6c571891e..3eb68ae14cabf2 100644
--- a/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.h
+++ b/ReactCommon/fabric/components/text/paragraph/ParagraphShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,34 +7,33 @@
 
 #pragma once
 
-#include <fabric/components/text/ParagraphProps.h>
-#include <fabric/components/text/TextShadowNode.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
-#include <fabric/core/ConcreteShadowNode.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/core/LayoutContext.h>
-#include <fabric/textlayoutmanager/TextLayoutManager.h>
 #include <folly/Optional.h>
+#include <react/components/text/ParagraphProps.h>
+#include <react/components/text/TextShadowNode.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
+#include <react/core/ConcreteShadowNode.h>
+#include <react/core/LayoutContext.h>
+#include <react/core/ShadowNode.h>
+#include <react/textlayoutmanager/TextLayoutManager.h>
 
 namespace facebook {
 namespace react {
 
 extern const char ParagraphComponentName[];
 
+using ParagraphEventEmitter = ViewEventEmitter;
+
 /*
  * `ShadowNode` for <Paragraph> component, represents <View>-like component
  * containing and displaying text. Text content is represented as nested <Text>
  * and <RawText> components.
  */
-class ParagraphShadowNode:
-  public ConcreteViewShadowNode<
-    ParagraphComponentName,
-    ParagraphProps
-  >,
-  public BaseTextShadowNode {
-
-public:
-
+class ParagraphShadowNode : public ConcreteViewShadowNode<
+                                ParagraphComponentName,
+                                ParagraphProps,
+                                ParagraphEventEmitter>,
+                            public BaseTextShadowNode {
+ public:
   using ConcreteViewShadowNode::ConcreteViewShadowNode;
 
   /*
@@ -54,13 +53,12 @@ class ParagraphShadowNode:
   void layout(LayoutContext layoutContext) override;
   Size measure(LayoutConstraints layoutConstraints) const override;
 
-private:
-
+ private:
   /*
    * Creates a `LocalData` object (with `AttributedText` and
    * `TextLayoutManager`) if needed.
    */
-  void updateLocalData();
+  void updateLocalDataIfNeeded();
 
   SharedTextLayoutManager textLayoutManager_;
 
@@ -68,7 +66,7 @@ class ParagraphShadowNode:
    * Cached attributed string that represents the content of the subtree started
    * from the node.
    */
-  mutable folly::Optional<AttributedString> cachedAttributedString_ {};
+  mutable folly::Optional<AttributedString> cachedAttributedString_{};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/paragraph/conversions.h b/ReactCommon/fabric/components/text/paragraph/conversions.h
new file mode 100644
index 00000000000000..bf2f2e1ebda795
--- /dev/null
+++ b/ReactCommon/fabric/components/text/paragraph/conversions.h
@@ -0,0 +1,21 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <folly/dynamic.h>
+#include <react/attributedstring/conversions.h>
+#include <react/components/text/ParagraphLocalData.h>
+
+namespace facebook {
+namespace react {
+
+inline folly::dynamic toDynamic(const ParagraphLocalData &paragraphLocalData) {
+  folly::dynamic newLocalData = folly::dynamic::object();
+  newLocalData["attributedString"] =
+      toDynamic(paragraphLocalData.getAttributedString());
+  return newLocalData;
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/text/rawtext/RawTextComponentDescriptor.h b/ReactCommon/fabric/components/text/rawtext/RawTextComponentDescriptor.h
index 4d53805a3c170b..8ee9418ee3fe45 100644
--- a/ReactCommon/fabric/components/text/rawtext/RawTextComponentDescriptor.h
+++ b/ReactCommon/fabric/components/text/rawtext/RawTextComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,14 @@
 
 #pragma once
 
-#include <fabric/components/text/RawTextShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/text/RawTextShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
 
-using RawTextComponentDescriptor = ConcreteComponentDescriptor<RawTextShadowNode>;
+using RawTextComponentDescriptor =
+    ConcreteComponentDescriptor<RawTextShadowNode>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/rawtext/RawTextProps.cpp b/ReactCommon/fabric/components/text/rawtext/RawTextProps.cpp
index f3945701befcd3..92a485ab5151cd 100644
--- a/ReactCommon/fabric/components/text/rawtext/RawTextProps.cpp
+++ b/ReactCommon/fabric/components/text/rawtext/RawTextProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,23 +7,25 @@
 
 #include "RawTextProps.h"
 
-#include <fabric/core/propsConversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
-RawTextProps::RawTextProps(const RawTextProps &sourceProps, const RawProps &rawProps):
-  Props(sourceProps, rawProps),
-  text(convertRawProp(rawProps, "text", sourceProps.text)) {};
+RawTextProps::RawTextProps(
+    const RawTextProps &sourceProps,
+    const RawProps &rawProps)
+    : Props(sourceProps, rawProps),
+      text(convertRawProp(rawProps, "text", sourceProps.text)){};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList RawTextProps::getDebugProps() const {
-  return {
-    debugStringConvertibleItem("text", text)
-  };
+  return {debugStringConvertibleItem("text", text)};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/rawtext/RawTextProps.h b/ReactCommon/fabric/components/text/rawtext/RawTextProps.h
index 1a473726f7bd42..4b774ca41b96c7 100644
--- a/ReactCommon/fabric/components/text/rawtext/RawTextProps.h
+++ b/ReactCommon/fabric/components/text/rawtext/RawTextProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 #include <memory>
 
-#include <fabric/core/Props.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/core/Props.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -19,20 +19,20 @@ class RawTextProps;
 
 using SharedRawTextProps = std::shared_ptr<const RawTextProps>;
 
-class RawTextProps:
-  public Props {
-
-public:
+class RawTextProps : public Props {
+ public:
   RawTextProps() = default;
   RawTextProps(const RawTextProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const std::string text {};
+  const std::string text{};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.cpp b/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.cpp
index 08b4f835356b3c..61de150a5b3a82 100644
--- a/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.cpp
+++ b/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.h b/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.h
index e13efdd1fe1d29..6613289a57090d 100644
--- a/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.h
+++ b/ReactCommon/fabric/components/text/rawtext/RawTextShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/components/text/RawTextProps.h>
-#include <fabric/core/ConcreteShadowNode.h>
+#include <react/components/text/RawTextProps.h>
+#include <react/core/ConcreteShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -22,10 +22,7 @@ extern const char RawTextComponentName[];
  * <RawText> component must not have any children.
  */
 using RawTextShadowNode =
-  ConcreteShadowNode<
-    RawTextComponentName,
-    RawTextProps
-  >;
+    ConcreteShadowNode<RawTextComponentName, RawTextProps>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/tests/ParagraphLocalDataTest.cpp b/ReactCommon/fabric/components/text/tests/ParagraphLocalDataTest.cpp
new file mode 100644
index 00000000000000..fab50b266dc496
--- /dev/null
+++ b/ReactCommon/fabric/components/text/tests/ParagraphLocalDataTest.cpp
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <memory>
+
+#include <assert.h>
+#include <gtest/gtest.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/attributedstring/primitives.h>
+#include <react/components/text/ParagraphLocalData.h>
+#include <react/components/text/conversions.h>
+
+namespace facebook {
+namespace react {
+
+TEST(ParagraphLocalDataTest, testSomething) {
+  auto attString = AttributedString();
+  auto fragment = AttributedString::Fragment();
+  fragment.string = "test";
+
+  auto text = TextAttributes();
+  text.foregroundColor = {
+      colorFromComponents({100 / 255.0, 153 / 255.0, 253 / 255.0, 1.0})};
+  text.opacity = 0.5;
+  text.fontStyle = FontStyle::Italic;
+  text.fontWeight = FontWeight::Thin;
+  text.fontVariant = FontVariant::TabularNums;
+  fragment.textAttributes = text;
+  attString.prependFragment(fragment);
+
+  auto paragraphLocalData = ParagraphLocalData();
+  paragraphLocalData.setAttributedString(attString);
+
+  auto result = toDynamic(paragraphLocalData)["attributedString"];
+
+  assert(result["string"] == fragment.string);
+  auto textAttribute = result["fragments"][0]["textAttributes"];
+  assert(textAttribute["foregroundColor"] == toDynamic(text.foregroundColor));
+  assert(textAttribute["opacity"] == text.opacity);
+  assert(textAttribute["fontStyle"] == toString(*text.fontStyle));
+  assert(textAttribute["fontWeight"] == toString(*text.fontWeight));
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/text/tests/TextTest.cpp b/ReactCommon/fabric/components/text/tests/TextTest.cpp
index 6b995ae90d7b0f..1be2d441e698a1 100644
--- a/ReactCommon/fabric/components/text/tests/TextTest.cpp
+++ b/ReactCommon/fabric/components/text/tests/TextTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/text/text/TextComponentDescriptor.h b/ReactCommon/fabric/components/text/text/TextComponentDescriptor.h
index af8d9f12c543ad..13946369def6bc 100644
--- a/ReactCommon/fabric/components/text/text/TextComponentDescriptor.h
+++ b/ReactCommon/fabric/components/text/text/TextComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/components/text/TextShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/text/TextShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
diff --git a/ReactCommon/fabric/components/text/text/TextProps.cpp b/ReactCommon/fabric/components/text/text/TextProps.cpp
index 443fe48c045122..6a24fa8b703624 100644
--- a/ReactCommon/fabric/components/text/text/TextProps.cpp
+++ b/ReactCommon/fabric/components/text/text/TextProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,14 +10,16 @@
 namespace facebook {
 namespace react {
 
-TextProps::TextProps(const TextProps &sourceProps, const RawProps &rawProps):
-  BaseTextProps::BaseTextProps(sourceProps, rawProps) {};
+TextProps::TextProps(const TextProps &sourceProps, const RawProps &rawProps)
+    : BaseTextProps::BaseTextProps(sourceProps, rawProps){};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList TextProps::getDebugProps() const {
   return BaseTextProps::getDebugProps();
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/text/text/TextProps.h b/ReactCommon/fabric/components/text/text/TextProps.h
index 35d3a9a9561ebf..83680db4706aa9 100644
--- a/ReactCommon/fabric/components/text/text/TextProps.h
+++ b/ReactCommon/fabric/components/text/text/TextProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,26 +7,25 @@
 
 #pragma once
 
-#include <fabric/attributedstring/TextAttributes.h>
-#include <fabric/components/text/BaseTextProps.h>
-#include <fabric/core/Props.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/attributedstring/TextAttributes.h>
+#include <react/components/text/BaseTextProps.h>
+#include <react/core/Props.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
 
-class TextProps:
-  public Props,
-  public BaseTextProps {
-
-public:
+class TextProps : public Props, public BaseTextProps {
+ public:
   TextProps() = default;
   TextProps(const TextProps &sourceProps, const RawProps &rawProps);
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/text/text/TextShadowNode.cpp b/ReactCommon/fabric/components/text/text/TextShadowNode.cpp
index 692388994319c1..60e0445adbe761 100644
--- a/ReactCommon/fabric/components/text/text/TextShadowNode.cpp
+++ b/ReactCommon/fabric/components/text/text/TextShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/components/text/text/TextShadowNode.h b/ReactCommon/fabric/components/text/text/TextShadowNode.h
index b19ddc47f464b1..52ed70e955c13f 100644
--- a/ReactCommon/fabric/components/text/text/TextShadowNode.h
+++ b/ReactCommon/fabric/components/text/text/TextShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,24 +7,22 @@
 
 #pragma once
 
-#include <fabric/components/text/BaseTextShadowNode.h>
-#include <fabric/components/text/TextProps.h>
-#include <fabric/core/ConcreteShadowNode.h>
+#include <react/components/text/BaseTextShadowNode.h>
+#include <react/components/text/TextProps.h>
+#include <react/components/view/ViewEventEmitter.h>
+#include <react/core/ConcreteShadowNode.h>
 
 namespace facebook {
 namespace react {
 
 extern const char TextComponentName[];
 
-class TextShadowNode:
-  public ConcreteShadowNode<
-    TextComponentName,
-    TextProps
-  >,
-  public BaseTextShadowNode {
-
-public:
+using TextEventEmitter = TouchEventEmitter;
 
+class TextShadowNode
+    : public ConcreteShadowNode<TextComponentName, TextProps, TextEventEmitter>,
+      public BaseTextShadowNode {
+ public:
   using ConcreteShadowNode::ConcreteShadowNode;
 };
 
diff --git a/ReactCommon/fabric/components/view/BUCK b/ReactCommon/fabric/components/view/BUCK
index 0aa0b6b3c7f551..868128eeabcd91 100644
--- a/ReactCommon/fabric/components/view/BUCK
+++ b/ReactCommon/fabric/components/view/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -31,7 +31,7 @@ rn_xplat_cxx_library(
             ("root", "*.h"),
             ("yoga", "*.h"),
         ],
-        prefix = "fabric/components/view",
+        prefix = "react/components/view",
     ),
     compiler_flags = [
         "-fexceptions",
diff --git a/ReactCommon/fabric/components/view/ConcreteViewShadowNode.h b/ReactCommon/fabric/components/view/ConcreteViewShadowNode.h
index 209a8594051af6..584afe8ec9eeeb 100644
--- a/ReactCommon/fabric/components/view/ConcreteViewShadowNode.h
+++ b/ReactCommon/fabric/components/view/ConcreteViewShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,15 +7,15 @@
 
 #pragma once
 
-#include <fabric/components/view/AccessibleShadowNode.h>
-#include <fabric/components/view/ViewEventEmitter.h>
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/components/view/YogaLayoutableShadowNode.h>
-#include <fabric/core/ConcreteShadowNode.h>
-#include <fabric/core/LayoutableShadowNode.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/core/ShadowNodeFragment.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
+#include <react/components/view/AccessibleShadowNode.h>
+#include <react/components/view/ViewEventEmitter.h>
+#include <react/components/view/ViewProps.h>
+#include <react/components/view/YogaLayoutableShadowNode.h>
+#include <react/core/ConcreteShadowNode.h>
+#include <react/core/LayoutableShadowNode.h>
+#include <react/core/ShadowNode.h>
+#include <react/core/ShadowNodeFragment.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 
 namespace facebook {
 namespace react {
@@ -26,70 +26,61 @@ namespace react {
  * For example: <Paragraph>, <Image>, but not <Text>, <RawText>.
  */
 template <
-  const char *concreteComponentName,
-  typename ViewPropsT = ViewProps,
-  typename ViewEventEmitterT = ViewEventEmitter
->
-class ConcreteViewShadowNode:
-  public ConcreteShadowNode<
-    concreteComponentName,
-    ViewPropsT,
-    ViewEventEmitterT
-  >,
-  public AccessibleShadowNode,
-  public YogaLayoutableShadowNode {
-
-  static_assert(std::is_base_of<ViewProps, ViewPropsT>::value, "ViewPropsT must be a descendant of ViewProps");
-  static_assert(std::is_base_of<YogaStylableProps, ViewPropsT>::value, "ViewPropsT must be a descendant of YogaStylableProps");
-  static_assert(std::is_base_of<AccessibilityProps, ViewPropsT>::value, "ViewPropsT must be a descendant of AccessibilityProps");
-
-public:
-  using BaseShadowNode = ConcreteShadowNode<
-    concreteComponentName,
-    ViewPropsT,
-    ViewEventEmitterT
-  >;
+    const char *concreteComponentName,
+    typename ViewPropsT = ViewProps,
+    typename ViewEventEmitterT = ViewEventEmitter>
+class ConcreteViewShadowNode : public ConcreteShadowNode<
+                                   concreteComponentName,
+                                   ViewPropsT,
+                                   ViewEventEmitterT>,
+                               public AccessibleShadowNode,
+                               public YogaLayoutableShadowNode {
+  static_assert(
+      std::is_base_of<ViewProps, ViewPropsT>::value,
+      "ViewPropsT must be a descendant of ViewProps");
+  static_assert(
+      std::is_base_of<YogaStylableProps, ViewPropsT>::value,
+      "ViewPropsT must be a descendant of YogaStylableProps");
+  static_assert(
+      std::is_base_of<AccessibilityProps, ViewPropsT>::value,
+      "ViewPropsT must be a descendant of AccessibilityProps");
+
+ public:
+  using BaseShadowNode =
+      ConcreteShadowNode<concreteComponentName, ViewPropsT, ViewEventEmitterT>;
   using ConcreteViewProps = ViewPropsT;
 
   ConcreteViewShadowNode(
-    const ShadowNodeFragment &fragment,
-    const ShadowNodeCloneFunction &cloneFunction
-  ):
-    BaseShadowNode(
-      fragment,
-      cloneFunction
-    ),
-    AccessibleShadowNode(
-      std::static_pointer_cast<const ConcreteViewProps>(fragment.props)
-    ),
-    YogaLayoutableShadowNode() {
-
-    YogaLayoutableShadowNode::setProps(*std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
-    YogaLayoutableShadowNode::setChildren(BaseShadowNode::template getChildrenSlice<YogaLayoutableShadowNode>());
+      const ShadowNodeFragment &fragment,
+      const ShadowNodeCloneFunction &cloneFunction)
+      : BaseShadowNode(fragment, cloneFunction),
+        AccessibleShadowNode(
+            std::static_pointer_cast<const ConcreteViewProps>(fragment.props)),
+        YogaLayoutableShadowNode() {
+    YogaLayoutableShadowNode::setProps(
+        *std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
+    YogaLayoutableShadowNode::setChildren(
+        BaseShadowNode::template getChildrenSlice<YogaLayoutableShadowNode>());
   };
 
   ConcreteViewShadowNode(
-    const ShadowNode &sourceShadowNode,
-    const ShadowNodeFragment &fragment
-  ):
-    BaseShadowNode(
-      sourceShadowNode,
-      fragment
-    ),
-    AccessibleShadowNode(
-      static_cast<const ConcreteViewShadowNode &>(sourceShadowNode),
-      std::static_pointer_cast<const ConcreteViewProps>(fragment.props)
-    ),
-    YogaLayoutableShadowNode(
-      static_cast<const ConcreteViewShadowNode &>(sourceShadowNode)
-    ) {
-
+      const ShadowNode &sourceShadowNode,
+      const ShadowNodeFragment &fragment)
+      : BaseShadowNode(sourceShadowNode, fragment),
+        AccessibleShadowNode(
+            static_cast<const ConcreteViewShadowNode &>(sourceShadowNode),
+            std::static_pointer_cast<const ConcreteViewProps>(fragment.props)),
+        YogaLayoutableShadowNode(
+            static_cast<const ConcreteViewShadowNode &>(sourceShadowNode)) {
     if (fragment.props) {
-      YogaLayoutableShadowNode::setProps(*std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
+      YogaLayoutableShadowNode::setProps(
+          *std::static_pointer_cast<const ConcreteViewProps>(fragment.props));
     }
 
     if (fragment.children) {
-      YogaLayoutableShadowNode::setChildren(BaseShadowNode::template getChildrenSlice<YogaLayoutableShadowNode>());
+      YogaLayoutableShadowNode::setChildren(
+          BaseShadowNode::template getChildrenSlice<
+              YogaLayoutableShadowNode>());
     }
   };
 
@@ -99,44 +90,44 @@ class ConcreteViewShadowNode:
     ShadowNode::appendChild(child);
 
     auto nonConstChild = const_cast<ShadowNode *>(child.get());
-    auto yogaLayoutableChild = dynamic_cast<YogaLayoutableShadowNode *>(nonConstChild);
+    auto yogaLayoutableChild =
+        dynamic_cast<YogaLayoutableShadowNode *>(nonConstChild);
     if (yogaLayoutableChild) {
       YogaLayoutableShadowNode::appendChild(yogaLayoutableChild);
     }
   }
 
-  LayoutableShadowNode *cloneAndReplaceChild(LayoutableShadowNode *child, int suggestedIndex = -1) override {
+  LayoutableShadowNode *cloneAndReplaceChild(
+      LayoutableShadowNode *child,
+      int suggestedIndex = -1) override {
     ensureUnsealed();
     auto childShadowNode = static_cast<const ConcreteViewShadowNode *>(child);
-    auto clonedChildShadowNode = std::static_pointer_cast<ConcreteViewShadowNode>(childShadowNode->clone({}));
-    ShadowNode::replaceChild(childShadowNode->shared_from_this(), clonedChildShadowNode, suggestedIndex);
+    auto clonedChildShadowNode =
+        std::static_pointer_cast<ConcreteViewShadowNode>(
+            childShadowNode->clone({}));
+    ShadowNode::replaceChild(
+        childShadowNode->shared_from_this(),
+        clonedChildShadowNode,
+        suggestedIndex);
     return clonedChildShadowNode.get();
   }
 
-#pragma mark - Equality
-
-  bool operator==(const ShadowNode& rhs) const override {
-    if (!ShadowNode::operator==(rhs)) {
-      return false;
-    }
-
-    const auto &other = static_cast<const ConcreteViewShadowNode&>(rhs);
-    return getLayoutMetrics() == other.getLayoutMetrics();
-  }
-
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override {
-    SharedDebugStringConvertibleList list = {};
+    auto list = SharedDebugStringConvertibleList{};
 
     auto basePropsList = ShadowNode::getDebugProps();
-    std::move(basePropsList.begin(), basePropsList.end(), std::back_inserter(list));
+    std::move(
+        basePropsList.begin(), basePropsList.end(), std::back_inserter(list));
 
-    list.push_back(std::make_shared<DebugStringConvertibleItem>("layout", "", LayoutableShadowNode::getDebugProps()));
+    list.push_back(std::make_shared<DebugStringConvertibleItem>(
+        "layout", "", LayoutableShadowNode::getDebugProps()));
 
     return list;
   }
-
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/TouchEventEmitter.cpp b/ReactCommon/fabric/components/view/TouchEventEmitter.cpp
new file mode 100644
index 00000000000000..4951c300e63b54
--- /dev/null
+++ b/ReactCommon/fabric/components/view/TouchEventEmitter.cpp
@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "TouchEventEmitter.h"
+
+namespace facebook {
+namespace react {
+
+#pragma mark - Touches
+
+static folly::dynamic touchPayload(const Touch &touch) {
+  folly::dynamic object = folly::dynamic::object();
+  object["locationX"] = touch.offsetPoint.x;
+  object["locationY"] = touch.offsetPoint.y;
+  object["pageX"] = touch.pagePoint.x;
+  object["pageY"] = touch.pagePoint.y;
+  object["screenX"] = touch.screenPoint.x;
+  object["screenY"] = touch.screenPoint.y;
+  object["identifier"] = touch.identifier;
+  object["target"] = touch.target;
+  object["timestamp"] = touch.timestamp * 1000;
+  object["force"] = touch.force;
+  return object;
+}
+
+static folly::dynamic touchesPayload(const Touches &touches) {
+  folly::dynamic array = folly::dynamic::array();
+  for (const auto &touch : touches) {
+    array.push_back(touchPayload(touch));
+  }
+  return array;
+}
+
+static folly::dynamic touchEventPayload(const TouchEvent &event) {
+  folly::dynamic object = folly::dynamic::object();
+  object["touches"] = touchesPayload(event.touches);
+  object["changedTouches"] = touchesPayload(event.changedTouches);
+  object["targetTouches"] = touchesPayload(event.targetTouches);
+  return object;
+}
+
+void TouchEventEmitter::onTouchStart(const TouchEvent &event) const {
+  dispatchEvent(
+      "touchStart",
+      touchEventPayload(event),
+      EventPriority::SynchronousUnbatched);
+}
+
+void TouchEventEmitter::onTouchMove(const TouchEvent &event) const {
+  dispatchEvent(
+      "touchMove", touchEventPayload(event), EventPriority::SynchronousBatched);
+}
+
+void TouchEventEmitter::onTouchEnd(const TouchEvent &event) const {
+  dispatchEvent(
+      "touchEnd", touchEventPayload(event), EventPriority::SynchronousBatched);
+}
+
+void TouchEventEmitter::onTouchCancel(const TouchEvent &event) const {
+  dispatchEvent(
+      "touchCancel",
+      touchEventPayload(event),
+      EventPriority::SynchronousBatched);
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/view/TouchEventEmitter.h b/ReactCommon/fabric/components/view/TouchEventEmitter.h
new file mode 100644
index 00000000000000..c00e2755225781
--- /dev/null
+++ b/ReactCommon/fabric/components/view/TouchEventEmitter.h
@@ -0,0 +1,116 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+#pragma once
+
+#include <react/core/LayoutMetrics.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/events/EventEmitter.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Describes an individual touch point for a touch event.
+ * See https://www.w3.org/TR/touch-events/ for more details.
+ */
+struct Touch {
+  /*
+   * The coordinate of point relative to the root component in points.
+   */
+  Point pagePoint;
+
+  /*
+   * The coordinate of point relative to the target component in points.
+   */
+  Point offsetPoint;
+
+  /*
+   * The coordinate of point relative to the screen component in points.
+   */
+  Point screenPoint;
+
+  /*
+   * An identification number for each touch point.
+   */
+  int identifier;
+
+  /*
+   * The tag of a component on which the touch point started when it was first
+   * placed on the surface, even if the touch point has since moved outside the
+   * interactive area of that element.
+   */
+  Tag target;
+
+  /*
+   * The force of the touch.
+   */
+  Float force;
+
+  /*
+   * The time in seconds when the touch occurred or when it was last mutated.
+   */
+  Float timestamp;
+
+  /*
+   * The particular implementation of `Hasher` and (especially) `Comparator`
+   * make sense only when `Touch` object is used as a *key* in indexed
+   * collections. Because of that they are expressed as separate classes.
+   */
+  struct Hasher {
+    size_t operator()(const Touch &touch) const {
+      return std::hash<decltype(touch.identifier)>()(touch.identifier);
+    }
+  };
+
+  struct Comparator {
+    bool operator()(const Touch &lhs, const Touch &rhs) const {
+      return lhs.identifier == rhs.identifier;
+    }
+  };
+};
+
+using Touches = std::unordered_set<Touch, Touch::Hasher, Touch::Comparator>;
+
+/*
+ * Defines the `touchstart`, `touchend`, `touchmove`, and `touchcancel` event
+ * types.
+ */
+struct TouchEvent {
+  /*
+   * A list of Touches for every point of contact currently touching the
+   * surface.
+   */
+  Touches touches;
+
+  /*
+   * A list of Touches for every point of contact which contributed to the
+   * event.
+   */
+  Touches changedTouches;
+
+  /*
+   * A list of Touches for every point of contact that is touching the surface
+   * and started on the element that is the target of the current event.
+   */
+  Touches targetTouches;
+};
+
+class TouchEventEmitter;
+using SharedTouchEventEmitter = std::shared_ptr<const TouchEventEmitter>;
+
+class TouchEventEmitter : public EventEmitter {
+ public:
+  using EventEmitter::EventEmitter;
+
+  void onTouchStart(const TouchEvent &event) const;
+  void onTouchMove(const TouchEvent &event) const;
+  void onTouchEnd(const TouchEvent &event) const;
+  void onTouchCancel(const TouchEvent &event) const;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/view/ViewComponentDescriptor.h b/ReactCommon/fabric/components/view/ViewComponentDescriptor.h
index 47cbe2e575c03f..dfa98ac1cbc033 100644
--- a/ReactCommon/fabric/components/view/ViewComponentDescriptor.h
+++ b/ReactCommon/fabric/components/view/ViewComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/components/view/ViewShadowNode.h>
-#include <fabric/core/ConcreteComponentDescriptor.h>
+#include <react/components/view/ViewShadowNode.h>
+#include <react/core/ConcreteComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
diff --git a/ReactCommon/fabric/components/view/ViewEventEmitter.cpp b/ReactCommon/fabric/components/view/ViewEventEmitter.cpp
index 643b0b017847e1..16c1d6e1630854 100644
--- a/ReactCommon/fabric/components/view/ViewEventEmitter.cpp
+++ b/ReactCommon/fabric/components/view/ViewEventEmitter.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -29,63 +29,12 @@ void ViewEventEmitter::onAccessibilityMagicTap() const {
 void ViewEventEmitter::onLayout(const LayoutMetrics &layoutMetrics) const {
   folly::dynamic payload = folly::dynamic::object();
   const auto &frame = layoutMetrics.frame;
-  payload["layout"] = folly::dynamic::object
-    ("x", frame.origin.x)
-    ("y", frame.origin.y)
-    ("width", frame.size.width)
-    ("height", frame.size.height);
+  payload["layout"] =
+      folly::dynamic::object("x", frame.origin.x)("y", frame.origin.y)(
+          "width", frame.size.width)("height", frame.size.height);
 
   dispatchEvent("layout", payload);
 }
 
-#pragma mark - Touches
-
-static folly::dynamic touchPayload(const Touch &touch) {
-  folly::dynamic object = folly::dynamic::object();
-  object["locationX"] = touch.offsetPoint.x;
-  object["locationY"] = touch.offsetPoint.x;
-  object["pageX"] = touch.pagePoint.x;
-  object["pageY"] = touch.pagePoint.x;
-  object["screenX"] = touch.screenPoint.x;
-  object["screenY"] = touch.screenPoint.x;
-  object["identifier"] = touch.identifier;
-  object["target"] = touch.target;
-  object["timestamp"] = touch.timestamp * 1000;
-  object["force"] = touch.force;
-  return object;
-}
-
-static folly::dynamic touchesPayload(const Touches &touches) {
-  folly::dynamic array = folly::dynamic::array();
-  for (const auto &touch : touches) {
-    array.push_back(touchPayload(touch));
-  }
-  return array;
-}
-
-static folly::dynamic touchEventPayload(const TouchEvent &event) {
-  folly::dynamic object = folly::dynamic::object();
-  object["touches"] = touchesPayload(event.touches);
-  object["changedTouches"] = touchesPayload(event.changedTouches);
-  object["targetTouches"] = touchesPayload(event.targetTouches);
-  return object;
-}
-
-void ViewEventEmitter::onTouchStart(const TouchEvent &event) const {
-  dispatchEvent("touchStart", touchEventPayload(event));
-}
-
-void ViewEventEmitter::onTouchMove(const TouchEvent &event) const {
-  dispatchEvent("touchMove", touchEventPayload(event));
-}
-
-void ViewEventEmitter::onTouchEnd(const TouchEvent &event) const {
-  dispatchEvent("touchEnd", touchEventPayload(event));
-}
-
-void ViewEventEmitter::onTouchCancel(const TouchEvent &event) const {
-  dispatchEvent("touchCancel", touchEventPayload(event));
-}
-
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/ViewEventEmitter.h b/ReactCommon/fabric/components/view/ViewEventEmitter.h
index 97704014341e99..431ede00089f29 100644
--- a/ReactCommon/fabric/components/view/ViewEventEmitter.h
+++ b/ReactCommon/fabric/components/view/ViewEventEmitter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,105 +8,20 @@
 
 #include <memory>
 
-#include <fabric/core/LayoutMetrics.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/events/EventEmitter.h>
+#include <react/core/LayoutMetrics.h>
+#include <react/core/ReactPrimitives.h>
+#include "TouchEventEmitter.h"
 
 namespace facebook {
 namespace react {
 
-/*
- * Describes an individual touch point for a touch event.
- * See https://www.w3.org/TR/touch-events/ for more details.
- */
-struct Touch {
-  /*
-   * The coordinate of point relative to the root component in points.
-   */
-  Point pagePoint;
-
-  /*
-   * The coordinate of point relative to the target component in points.
-   */
-  Point offsetPoint;
-
-  /*
-   * The coordinate of point relative to the screen component in points.
-   */
-  Point screenPoint;
-
-  /*
-   * An identification number for each touch point.
-   */
-  int identifier;
-
-  /*
-   * The tag of a component on which the touch point started when it was first placed on the surface,
-   * even if the touch point has since moved outside the interactive area of that element.
-   */
-  Tag target;
-
-  /*
-   * The force of the touch.
-   */
-  Float force;
-
-  /*
-   * The time in seconds when the touch occurred or when it was last mutated.
-   */
-  Float timestamp;
-
-  /*
-   * The particular implementation of `Hasher` and (especially) `Comparator`
-   * make sense only when `Touch` object is used as a *key* in indexed collections.
-   * Because of that they are expressed as separate classes.
-   */
-  struct Hasher {
-    size_t operator()(const Touch &touch) const {
-      return std::hash<decltype(touch.identifier)>()(touch.identifier);
-    }
-  };
-
-  struct Comparator {
-    bool operator()(const Touch &lhs, const Touch &rhs) const {
-      return lhs.identifier == rhs.identifier;
-    }
-  };
-};
-
-using Touches = std::unordered_set<Touch, Touch::Hasher, Touch::Comparator>;
-
-/*
- * Defines the `touchstart`, `touchend`, `touchmove`, and `touchcancel` event types.
- */
-struct TouchEvent {
-  /*
-   * A list of Touches for every point of contact currently touching the surface.
-   */
-  Touches touches;
-
-  /*
-   * A list of Touches for every point of contact which contributed to the event.
-   */
-  Touches changedTouches;
-
-  /*
-   * A list of Touches for every point of contact that is touching the surface
-   * and started on the element that is the target of the current event.
-   */
-  Touches targetTouches;
-};
-
 class ViewEventEmitter;
 
 using SharedViewEventEmitter = std::shared_ptr<const ViewEventEmitter>;
 
-class ViewEventEmitter:
-  public EventEmitter {
-
-public:
-
-  using EventEmitter::EventEmitter;
+class ViewEventEmitter : public TouchEventEmitter {
+ public:
+  using TouchEventEmitter::TouchEventEmitter;
 
 #pragma mark - Accessibility
 
@@ -117,13 +32,6 @@ class ViewEventEmitter:
 #pragma mark - Layout
 
   void onLayout(const LayoutMetrics &layoutMetrics) const;
-
-#pragma mark - Touches
-
-  void onTouchStart(const TouchEvent &event) const;
-  void onTouchMove(const TouchEvent &event) const;
-  void onTouchEnd(const TouchEvent &event) const;
-  void onTouchCancel(const TouchEvent &event) const;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/ViewProps.cpp b/ReactCommon/fabric/components/view/ViewProps.cpp
index 72af1c675c038b..db11821b83a331 100644
--- a/ReactCommon/fabric/components/view/ViewProps.cpp
+++ b/ReactCommon/fabric/components/view/ViewProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,54 +7,118 @@
 
 #include "ViewProps.h"
 
-#include <fabric/components/view/conversions.h>
-#include <fabric/core/propsConversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
-#include <fabric/graphics/conversions.h>
+#include <react/components/view/conversions.h>
+#include <react/components/view/propsConversions.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
 
-ViewProps::ViewProps(const YGStyle &yogaStyle):
-  YogaStylableProps(yogaStyle) {}
-
-ViewProps::ViewProps(const ViewProps &sourceProps, const RawProps &rawProps):
-  Props(sourceProps, rawProps),
-  YogaStylableProps(sourceProps, rawProps),
-  opacity(convertRawProp(rawProps, "opacity", sourceProps.opacity, (Float)1.0)),
-  foregroundColor(convertRawProp(rawProps, "foregroundColor", sourceProps.foregroundColor)),
-  backgroundColor(convertRawProp(rawProps, "backgroundColor", sourceProps.backgroundColor)),
-  borderWidth(convertRawProp(rawProps, "borderWidth", sourceProps.borderWidth)),
-  borderRadius(convertRawProp(rawProps, "borderRadius", sourceProps.borderRadius)),
-  borderColor(convertRawProp(rawProps, "borderColor", sourceProps.borderColor)),
-  borderStyle(convertRawProp(rawProps, "borderStyle", sourceProps.borderStyle)),
-  shadowColor(convertRawProp(rawProps, "shadowColor", sourceProps.shadowColor)),
-  shadowOffset(convertRawProp(rawProps, "shadowOffset", sourceProps.shadowOffset)),
-  shadowOpacity(convertRawProp(rawProps, "shadowOpacity", sourceProps.shadowOpacity)),
-  shadowRadius(convertRawProp(rawProps, "shadowRadius", sourceProps.shadowRadius)),
-  transform(convertRawProp(rawProps, "transform", sourceProps.transform)),
-  backfaceVisibility(convertRawProp(rawProps, "backfaceVisibility", sourceProps.backfaceVisibility)),
-  shouldRasterize(convertRawProp(rawProps, "shouldRasterize", sourceProps.shouldRasterize)),
-  zIndex(convertRawProp(rawProps, "zIndex", sourceProps.zIndex)),
-  pointerEvents(convertRawProp(rawProps, "pointerEvents", sourceProps.pointerEvents)),
-  hitSlop(convertRawProp(rawProps, "hitSlop", sourceProps.hitSlop)),
-  onLayout(convertRawProp(rawProps, "onLayout", sourceProps.onLayout)) {};
+ViewProps::ViewProps(const YGStyle &yogaStyle) : YogaStylableProps(yogaStyle) {}
+
+ViewProps::ViewProps(const ViewProps &sourceProps, const RawProps &rawProps)
+    : Props(sourceProps, rawProps),
+      YogaStylableProps(sourceProps, rawProps),
+      AccessibilityProps(sourceProps, rawProps),
+      opacity(
+          convertRawProp(rawProps, "opacity", sourceProps.opacity, (Float)1.0)),
+      foregroundColor(convertRawProp(
+          rawProps,
+          "foregroundColor",
+          sourceProps.foregroundColor)),
+      backgroundColor(convertRawProp(
+          rawProps,
+          "backgroundColor",
+          sourceProps.backgroundColor)),
+      borderRadii(convertRawProp(
+          rawProps,
+          "border",
+          "Radius",
+          sourceProps.borderRadii)),
+      borderColors(convertRawProp(
+          rawProps,
+          "border",
+          "Color",
+          sourceProps.borderColors)),
+      borderStyles(convertRawProp(
+          rawProps,
+          "border",
+          "Style",
+          sourceProps.borderStyles)),
+      shadowColor(
+          convertRawProp(rawProps, "shadowColor", sourceProps.shadowColor)),
+      shadowOffset(
+          convertRawProp(rawProps, "shadowOffset", sourceProps.shadowOffset)),
+      shadowOpacity(
+          convertRawProp(rawProps, "shadowOpacity", sourceProps.shadowOpacity)),
+      shadowRadius(
+          convertRawProp(rawProps, "shadowRadius", sourceProps.shadowRadius)),
+      transform(convertRawProp(rawProps, "transform", sourceProps.transform)),
+      backfaceVisibility(convertRawProp(
+          rawProps,
+          "backfaceVisibility",
+          sourceProps.backfaceVisibility)),
+      shouldRasterize(convertRawProp(
+          rawProps,
+          "shouldRasterize",
+          sourceProps.shouldRasterize)),
+      zIndex(convertRawProp(rawProps, "zIndex", sourceProps.zIndex)),
+      pointerEvents(
+          convertRawProp(rawProps, "pointerEvents", sourceProps.pointerEvents)),
+      hitSlop(convertRawProp(rawProps, "hitSlop", sourceProps.hitSlop)),
+      onLayout(convertRawProp(rawProps, "onLayout", sourceProps.onLayout)),
+      collapsable(convertRawProp(
+          rawProps,
+          "collapsable",
+          sourceProps.collapsable,
+          true)){};
+
+#pragma mark - Convenience Methods
+
+BorderMetrics ViewProps::resolveBorderMetrics(bool isRTL) const {
+  auto borderWidths = CascadedBorderWidths{
+      .left = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeLeft]),
+      .top = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeTop]),
+      .right = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeRight]),
+      .bottom = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeBottom]),
+      .start = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeStart]),
+      .end = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeEnd]),
+      .horizontal =
+          optionalFloatFromYogaValue(yogaStyle.border[YGEdgeHorizontal]),
+      .vertical = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeVertical]),
+      .all = optionalFloatFromYogaValue(yogaStyle.border[YGEdgeAll])};
+
+  return {.borderColors = borderColors.resolve(isRTL, {}),
+          .borderWidths = borderWidths.resolve(isRTL, 0),
+          .borderRadii = borderRadii.resolve(isRTL, 0),
+          .borderStyles = borderStyles.resolve(isRTL, BorderStyle::Solid)};
+}
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList ViewProps::getDebugProps() const {
   const auto &defaultViewProps = ViewProps();
 
-  return
-    AccessibilityProps::getDebugProps() +
-    YogaStylableProps::getDebugProps() +
-    SharedDebugStringConvertibleList {
-      debugStringConvertibleItem("zIndex", zIndex, defaultViewProps.zIndex),
-      debugStringConvertibleItem("opacity", opacity, defaultViewProps.opacity),
-      debugStringConvertibleItem("foregroundColor", foregroundColor, defaultViewProps.foregroundColor),
-      debugStringConvertibleItem("backgroundColor", backgroundColor, defaultViewProps.backgroundColor),
-    };
+  return AccessibilityProps::getDebugProps() +
+      YogaStylableProps::getDebugProps() +
+      SharedDebugStringConvertibleList{
+          debugStringConvertibleItem("zIndex", zIndex, defaultViewProps.zIndex),
+          debugStringConvertibleItem(
+              "opacity", opacity, defaultViewProps.opacity),
+          debugStringConvertibleItem(
+              "foregroundColor",
+              foregroundColor,
+              defaultViewProps.foregroundColor),
+          debugStringConvertibleItem(
+              "backgroundColor",
+              backgroundColor,
+              defaultViewProps.backgroundColor),
+      };
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/ViewProps.h b/ReactCommon/fabric/components/view/ViewProps.h
index d245e1c5e6aeaf..5259a85fd7e4a2 100644
--- a/ReactCommon/fabric/components/view/ViewProps.h
+++ b/ReactCommon/fabric/components/view/ViewProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,12 @@
 
 #pragma once
 
-#include <fabric/components/view/AccessibilityProps.h>
-#include <fabric/components/view/primitives.h>
-#include <fabric/components/view/YogaStylableProps.h>
-#include <fabric/core/Props.h>
-#include <fabric/graphics/Geometry.h>
-#include <fabric/graphics/Color.h>
+#include <react/components/view/AccessibilityProps.h>
+#include <react/components/view/YogaStylableProps.h>
+#include <react/components/view/primitives.h>
+#include <react/core/Props.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -21,12 +21,10 @@ class ViewProps;
 
 using SharedViewProps = std::shared_ptr<const ViewProps>;
 
-class ViewProps:
-  public Props,
-  public YogaStylableProps,
-  public AccessibilityProps {
-
-public:
+class ViewProps : public Props,
+                  public YogaStylableProps,
+                  public AccessibilityProps {
+ public:
   ViewProps() = default;
   ViewProps(const YGStyle &yogaStyle);
   ViewProps(const ViewProps &sourceProps, const RawProps &rawProps);
@@ -34,36 +32,43 @@ class ViewProps:
 #pragma mark - Props
 
   // Color
-  const Float opacity {1.0};
-  const SharedColor foregroundColor {};
-  const SharedColor backgroundColor {};
+  const Float opacity{1.0};
+  const SharedColor foregroundColor{};
+  const SharedColor backgroundColor{};
 
   // Borders
-  const EdgeInsets borderWidth {};
-  const CornerInsets borderRadius {};
-  const SharedColor borderColor {};
-  const BorderStyle borderStyle {};
+  const CascadedBorderRadii borderRadii{};
+  const CascadedBorderColors borderColors{};
+  const CascadedBorderStyles borderStyles{};
 
   // Shadow
-  const SharedColor shadowColor {};
-  const Size shadowOffset {};
-  const Float shadowOpacity {};
-  const Float shadowRadius {};
+  const SharedColor shadowColor{};
+  const Size shadowOffset{};
+  const Float shadowOpacity{};
+  const Float shadowRadius{};
 
   // Transform
-  const Transform transform {};
-  const bool backfaceVisibility {};
-  const bool shouldRasterize {};
-  const int zIndex {};
+  const Transform transform{};
+  const bool backfaceVisibility{};
+  const bool shouldRasterize{};
+  const int zIndex{};
 
   // Events
-  const PointerEventsMode pointerEvents {};
-  const EdgeInsets hitSlop {};
-  const bool onLayout {};
+  const PointerEventsMode pointerEvents{};
+  const EdgeInsets hitSlop{};
+  const bool onLayout{};
+
+  const bool collapsable{true};
+
+#pragma mark - Convenience Methods
+
+  BorderMetrics resolveBorderMetrics(bool isRTL) const;
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/ViewShadowNode.cpp b/ReactCommon/fabric/components/view/ViewShadowNode.cpp
index a633c6869e459c..edc68a74561050 100644
--- a/ReactCommon/fabric/components/view/ViewShadowNode.cpp
+++ b/ReactCommon/fabric/components/view/ViewShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,5 +12,24 @@ namespace react {
 
 const char ViewComponentName[] = "View";
 
+bool ViewShadowNode::isLayoutOnly() const {
+  const auto &viewProps = *std::static_pointer_cast<const ViewProps>(props_);
+
+  return viewProps.collapsable &&
+      // Event listeners
+      !viewProps.onLayout &&
+      // Generic Props
+      viewProps.nativeId.empty() &&
+      // Accessibility Props
+      !viewProps.accessible &&
+      // Style Props
+      viewProps.yogaStyle.overflow == YGOverflowVisible &&
+      viewProps.opacity == 1.0 && !viewProps.backgroundColor &&
+      !viewProps.foregroundColor && !viewProps.shadowColor &&
+      viewProps.transform == Transform{} && viewProps.zIndex == 0 &&
+      // Layout Metrics
+      getLayoutMetrics().borderWidth == EdgeInsets{};
+}
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/ViewShadowNode.h b/ReactCommon/fabric/components/view/ViewShadowNode.h
index 449e6c0f4696b0..4111f939b3acee 100644
--- a/ReactCommon/fabric/components/view/ViewShadowNode.h
+++ b/ReactCommon/fabric/components/view/ViewShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,20 +7,26 @@
 
 #pragma once
 
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/components/view/ConcreteViewShadowNode.h>
+#include <react/components/view/ConcreteViewShadowNode.h>
+#include <react/components/view/ViewProps.h>
 
 namespace facebook {
 namespace react {
 
 extern const char ViewComponentName[];
 
-using ViewShadowNode =
-  ConcreteViewShadowNode<
-    ViewComponentName,
-    ViewProps,
-    ViewEventEmitter
-  >;
+/*
+ * `ShadowNode` for <View> component.
+ */
+class ViewShadowNode final : public ConcreteViewShadowNode<
+                                 ViewComponentName,
+                                 ViewProps,
+                                 ViewEventEmitter> {
+ public:
+  using ConcreteViewShadowNode::ConcreteViewShadowNode;
+
+  bool isLayoutOnly() const;
+};
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/AccessibilityPrimitives.h b/ReactCommon/fabric/components/view/accessibility/AccessibilityPrimitives.h
index 01ddabb9ea7eed..36d4c221d6f2e7 100644
--- a/ReactCommon/fabric/components/view/accessibility/AccessibilityPrimitives.h
+++ b/ReactCommon/fabric/components/view/accessibility/AccessibilityPrimitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,7 @@
 namespace facebook {
 namespace react {
 
-enum class AccessibilityTraits: uint32_t {
+enum class AccessibilityTraits : uint32_t {
   None = 0,
   Button = (1 << 0),
   Link = (1 << 1),
@@ -27,14 +27,22 @@ enum class AccessibilityTraits: uint32_t {
   SearchField = (1 << 10),
   StartsMediaSession = (1 << 11),
   Adjustable = (1 << 12),
-  DirectInteraction = (1 << 13),
+  AllowsDirectInteraction = (1 << 13),
   CausesPageTurn = (1 << 14),
   Header = (1 << 15),
 };
 
-constexpr enum AccessibilityTraits operator |(const enum AccessibilityTraits lhs, const enum AccessibilityTraits rhs) {
+constexpr enum AccessibilityTraits operator|(
+    const enum AccessibilityTraits lhs,
+    const enum AccessibilityTraits rhs) {
   return (enum AccessibilityTraits)((uint32_t)lhs | (uint32_t)rhs);
 }
 
+constexpr enum AccessibilityTraits operator&(
+    const enum AccessibilityTraits lhs,
+    const enum AccessibilityTraits rhs) {
+  return (enum AccessibilityTraits)((uint32_t)lhs & (uint32_t)rhs);
+}
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.cpp b/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.cpp
index f8833ac7d9284a..f8ba55d976d81c 100644
--- a/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.cpp
+++ b/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,12 +7,60 @@
 
 #include "AccessibilityProps.h"
 
-#include "accessibilityValuesConversions.h"
+#include <react/components/view/accessibilityPropsConversions.h>
+#include <react/components/view/propsConversions.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
-AccessibilityProps::AccessibilityProps(const AccessibilityProps &sourceProps, const RawProps &rawProps) {}
+AccessibilityProps::AccessibilityProps(
+    const AccessibilityProps &sourceProps,
+    const RawProps &rawProps)
+    : accessible(
+          convertRawProp(rawProps, "accessible", sourceProps.accessible)),
+      accessibilityTraits(convertRawProp(
+          rawProps,
+          "accessibilityTraits",
+          sourceProps.accessibilityTraits)),
+      accessibilityLabel(convertRawProp(
+          rawProps,
+          "accessibilityLabel",
+          sourceProps.accessibilityLabel)),
+      accessibilityHint(convertRawProp(
+          rawProps,
+          "accessibilityHint",
+          sourceProps.accessibilityHint)),
+      accessibilityActions(convertRawProp(
+          rawProps,
+          "accessibilityActions",
+          sourceProps.accessibilityActions)),
+      accessibilityViewIsModal(convertRawProp(
+          rawProps,
+          "accessibilityViewIsModal",
+          sourceProps.accessibilityViewIsModal)),
+      accessibilityElementsHidden(convertRawProp(
+          rawProps,
+          "accessibilityElementsHidden",
+          sourceProps.accessibilityElementsHidden)),
+      accessibilityIgnoresInvertColors(convertRawProp(
+          rawProps,
+          "accessibilityIgnoresInvertColors",
+          sourceProps.accessibilityIgnoresInvertColors)),
+      testId(convertRawProp(rawProps, "testId", sourceProps.testId)) {}
+
+#pragma mark - DebugStringConvertible
+
+#if RN_DEBUG_STRING_CONVERTIBLE
+SharedDebugStringConvertibleList AccessibilityProps::getDebugProps() const {
+  const auto &defaultProps = AccessibilityProps();
+  LOG(INFO) << "Call AccessibilityProps::getDebugProps with testId " << testId;
+  return SharedDebugStringConvertibleList{
+      debugStringConvertibleItem("testId", testId, defaultProps.testId),
+  };
+}
+#endif // RN_DEBUG_STRING_CONVERTIBLE
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.h b/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.h
index d1682c68716889..1253fc308f424f 100644
--- a/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.h
+++ b/ReactCommon/fabric/components/view/accessibility/AccessibilityProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #pragma once
 
-#include <fabric/components/view/AccessibilityPrimitives.h>
-#include <fabric/core/Props.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/components/view/AccessibilityPrimitives.h>
+#include <react/core/Props.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -19,22 +19,30 @@ class AccessibilityProps;
 
 typedef std::shared_ptr<const AccessibilityProps> SharedAccessibilityProps;
 
-class AccessibilityProps:
-  public virtual DebugStringConvertible {
-
-public:
-
+class AccessibilityProps : public virtual DebugStringConvertible {
+ public:
   AccessibilityProps() = default;
-  AccessibilityProps(const AccessibilityProps &sourceProps, const RawProps &rawProps);
+  AccessibilityProps(
+      const AccessibilityProps &sourceProps,
+      const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const bool accessible {true};
-  const std::vector<std::string> accessibilityActions {};
-  const std::string accessibilityLabel {""};
-  const AccessibilityTraits accessibilityTraits {AccessibilityTraits::None};
-  const bool accessibilityViewIsModal {false};
-  const bool accessibilityElementsHidden {false};
+  const bool accessible{false};
+  const AccessibilityTraits accessibilityTraits{AccessibilityTraits::None};
+  const std::string accessibilityLabel{""};
+  const std::string accessibilityHint{""};
+  const std::vector<std::string> accessibilityActions{};
+  const bool accessibilityViewIsModal{false};
+  const bool accessibilityElementsHidden{false};
+  const bool accessibilityIgnoresInvertColors{false};
+  const std::string testId{""};
+
+#pragma mark - DebugStringConvertible
+
+#if RN_DEBUG_STRING_CONVERTIBLE
+  SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.cpp b/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.cpp
index 70c9be16f53edd..627f1c2f0a24ac 100644
--- a/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.cpp
+++ b/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,16 +13,13 @@ namespace facebook {
 namespace react {
 
 AccessibleShadowNode::AccessibleShadowNode(
-  const SharedAccessibilityProps &props
-) {
+    const SharedAccessibilityProps &props) {
   assert(props);
 }
 
 AccessibleShadowNode::AccessibleShadowNode(
-  const AccessibleShadowNode &shadowNode,
-  const SharedAccessibilityProps &props
-) {
-}
+    const AccessibleShadowNode &shadowNode,
+    const SharedAccessibilityProps &props) {}
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.h b/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.h
index 9f00acbc3a3179..db22cca4777164 100644
--- a/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.h
+++ b/ReactCommon/fabric/components/view/accessibility/AccessibleShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 #include <memory>
 
-#include <fabric/components/view/AccessibilityProps.h>
-#include <fabric/core/ShadowNode.h>
+#include <react/components/view/AccessibilityProps.h>
+#include <react/core/ShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -20,21 +20,16 @@ class AccessibleShadowNode;
 using SharedAccessibleShadowNode = std::shared_ptr<const AccessibleShadowNode>;
 
 class AccessibleShadowNode {
-
-public:
-
+ public:
 #pragma mark - Constructors
 
   AccessibleShadowNode() = default;
 
-  AccessibleShadowNode(
-    const SharedAccessibilityProps &props
-  );
+  AccessibleShadowNode(const SharedAccessibilityProps &props);
 
   AccessibleShadowNode(
-    const AccessibleShadowNode &shadowNode,
-    const SharedAccessibilityProps &props = nullptr
-  );
+      const AccessibleShadowNode &shadowNode,
+      const SharedAccessibilityProps &props = nullptr);
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/accessibility/accessibilityPropsConversions.h b/ReactCommon/fabric/components/view/accessibility/accessibilityPropsConversions.h
new file mode 100644
index 00000000000000..4e7c361926e222
--- /dev/null
+++ b/ReactCommon/fabric/components/view/accessibility/accessibilityPropsConversions.h
@@ -0,0 +1,106 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <folly/dynamic.h>
+#include <react/components/view/AccessibilityPrimitives.h>
+
+namespace facebook {
+namespace react {
+
+inline void fromString(const std::string &string, AccessibilityTraits &result) {
+  if (string == "none") {
+    result = AccessibilityTraits::None;
+    return;
+  }
+  if (string == "button") {
+    result = AccessibilityTraits::Button;
+    return;
+  }
+  if (string == "link") {
+    result = AccessibilityTraits::Link;
+    return;
+  }
+  if (string == "image") {
+    result = AccessibilityTraits::Image;
+    return;
+  }
+  if (string == "selected") {
+    result = AccessibilityTraits::Selected;
+    return;
+  }
+  if (string == "plays") {
+    result = AccessibilityTraits::PlaysSound;
+    return;
+  }
+  if (string == "keyboardkey") {
+    result = AccessibilityTraits::KeyboardKey;
+    return;
+  }
+  if (string == "text") {
+    result = AccessibilityTraits::StaticText;
+    return;
+  }
+  if (string == "disabled") {
+    result = AccessibilityTraits::NotEnabled;
+    return;
+  }
+  if (string == "frequentUpdates") {
+    result = AccessibilityTraits::UpdatesFrequently;
+    return;
+  }
+  if (string == "search") {
+    result = AccessibilityTraits::SearchField;
+    return;
+  }
+  if (string == "startsMedia") {
+    result = AccessibilityTraits::StartsMediaSession;
+    return;
+  }
+  if (string == "adjustable") {
+    result = AccessibilityTraits::Adjustable;
+    return;
+  }
+  if (string == "allowsDirectInteraction") {
+    result = AccessibilityTraits::AllowsDirectInteraction;
+    return;
+  }
+  if (string == "pageTurn") {
+    result = AccessibilityTraits::CausesPageTurn;
+    return;
+  }
+  if (string == "header") {
+    result = AccessibilityTraits::Header;
+    return;
+  }
+  abort();
+}
+
+inline void fromDynamic(
+    const folly::dynamic &value,
+    AccessibilityTraits &result) {
+  if (value.isString()) {
+    fromString(value.asString(), result);
+    return;
+  }
+
+  if (value.isArray()) {
+    result = {};
+    for (auto &item : value) {
+      auto string = item.asString();
+      AccessibilityTraits itemAccessibilityTraits;
+      fromString(value.asString(), itemAccessibilityTraits);
+      result = result | itemAccessibilityTraits;
+    }
+  }
+
+  abort();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.cpp b/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.cpp
deleted file mode 100644
index 1e97d64e265095..00000000000000
--- a/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "accessibilityValuesConversions.h"
-
-#include <folly/Conv.h>
-
-namespace facebook {
-namespace react {
-
-AccessibilityTraits accessibilityTraitsFromDynamic(const folly::dynamic &value) {
-  assert(value.isString());
-
-  // FIXME: Not clear yet.
-  abort();
-}
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.h b/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.h
deleted file mode 100644
index 97913d3e2663c3..00000000000000
--- a/ReactCommon/fabric/components/view/accessibility/accessibilityValuesConversions.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <fabric/components/view/AccessibilityPrimitives.h>
-#include <folly/dynamic.h>
-
-namespace facebook {
-namespace react {
-
-AccessibilityTraits accessibilityTraitsFromDynamic(const folly::dynamic &value);
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/components/view/conversions.h b/ReactCommon/fabric/components/view/conversions.h
index 76dc48909ea188..d4274e4ded48e9 100644
--- a/ReactCommon/fabric/components/view/conversions.h
+++ b/ReactCommon/fabric/components/view/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,18 +7,19 @@
 
 #pragma once
 
-#include <fabric/components/view/primitives.h>
-#include <fabric/core/LayoutMetrics.h>
-#include <fabric/graphics/Geometry.h>
-#include <folly/dynamic.h>
 #include <folly/Conv.h>
-#include <yoga/Yoga.h>
+#include <folly/dynamic.h>
+#include <react/components/view/primitives.h>
+#include <react/core/LayoutMetrics.h>
+#include <react/graphics/Geometry.h>
 #include <yoga/YGNode.h>
+#include <yoga/Yoga.h>
+#include <cmath>
 
 namespace facebook {
 namespace react {
 
-inline Float fabricFloatFromYogaFloat(float value) {
+inline Float floatFromYogaFloat(float value) {
   if (value == YGUndefined) {
     return kFloatUndefined;
   }
@@ -26,7 +27,7 @@ inline Float fabricFloatFromYogaFloat(float value) {
   return (Float)value;
 }
 
-inline float yogaFloatFromFabricFloat(Float value) {
+inline float yogaFloatFromFloat(Float value) {
   if (value == kFloatUndefined) {
     return YGUndefined;
   }
@@ -34,145 +35,265 @@ inline float yogaFloatFromFabricFloat(Float value) {
   return (float)value;
 }
 
-inline Float fabricFloatFromYogaOptionalFloat(YGFloatOptional value) {
+inline Float floatFromYogaOptionalFloat(YGFloatOptional value) {
   if (value.isUndefined()) {
     return kFloatUndefined;
   }
 
-  return fabricFloatFromYogaFloat(value.getValue());
+  return floatFromYogaFloat(value.getValue());
 }
 
-inline YGFloatOptional yogaOptionalFloatFromFabricFloat(Float value) {
+inline YGFloatOptional yogaOptionalFloatFromFloat(Float value) {
   if (value == kFloatUndefined) {
     return YGFloatOptional();
   }
 
-  return YGFloatOptional(yogaFloatFromFabricFloat(value));
+  return YGFloatOptional(yogaFloatFromFloat(value));
 }
 
 inline YGValue yogaStyleValueFromFloat(const Float &value) {
-  if (isnan(value) || value == kFloatUndefined) {
+  if (std::isnan(value) || value == kFloatUndefined) {
     return YGValueUndefined;
   }
 
   return {(float)value, YGUnitPoint};
 }
 
-inline LayoutMetrics layoutMetricsFromYogaNode(YGNode &yogaNode) {
-  LayoutMetrics layoutMetrics;
-
-  YGLayout layout = yogaNode.getLayout();
-
-  layoutMetrics.frame = Rect {
-    Point {
-      fabricFloatFromYogaFloat(layout.position[YGEdgeLeft]),
-      fabricFloatFromYogaFloat(layout.position[YGEdgeTop])
-    },
-    Size {
-      fabricFloatFromYogaFloat(layout.dimensions[YGDimensionWidth]),
-      fabricFloatFromYogaFloat(layout.dimensions[YGDimensionHeight])
-    }
-  };
-
-  layoutMetrics.borderWidth = EdgeInsets {
-    fabricFloatFromYogaFloat(layout.border[YGEdgeLeft]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeTop]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeRight]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeBottom])
-  };
-
-  layoutMetrics.contentInsets = EdgeInsets {
-    fabricFloatFromYogaFloat(layout.border[YGEdgeLeft] + layout.padding[YGEdgeLeft]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeTop] + layout.padding[YGEdgeTop]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeRight] + layout.padding[YGEdgeRight]),
-    fabricFloatFromYogaFloat(layout.border[YGEdgeBottom] + layout.padding[YGEdgeBottom])
-  };
+inline folly::Optional<Float> optionalFloatFromYogaValue(
+    const YGValue &value,
+    folly::Optional<Float> base = {}) {
+  switch (value.unit) {
+    case YGUnitUndefined:
+      return {};
+    case YGUnitPoint:
+      return floatFromYogaFloat(value.value);
+    case YGUnitPercent:
+      return base.has_value()
+          ? folly::Optional<Float>(
+                base.value() * floatFromYogaFloat(value.value))
+          : folly::Optional<Float>();
+    case YGUnitAuto:
+      return {};
+  }
+}
 
-  layoutMetrics.displayType =
-    yogaNode.getStyle().display == YGDisplayNone ? DisplayType::None : DisplayType::Flex;
+inline LayoutMetrics layoutMetricsFromYogaNode(YGNode &yogaNode) {
+  auto layoutMetrics = LayoutMetrics{};
+
+  layoutMetrics.frame =
+      Rect{Point{floatFromYogaFloat(YGNodeLayoutGetLeft(&yogaNode)),
+                 floatFromYogaFloat(YGNodeLayoutGetTop(&yogaNode))},
+           Size{floatFromYogaFloat(YGNodeLayoutGetWidth(&yogaNode)),
+                floatFromYogaFloat(YGNodeLayoutGetHeight(&yogaNode))}};
+
+  layoutMetrics.borderWidth = EdgeInsets{
+      floatFromYogaFloat(YGNodeLayoutGetBorder(&yogaNode, YGEdgeLeft)),
+      floatFromYogaFloat(YGNodeLayoutGetBorder(&yogaNode, YGEdgeTop)),
+      floatFromYogaFloat(YGNodeLayoutGetBorder(&yogaNode, YGEdgeRight)),
+      floatFromYogaFloat(YGNodeLayoutGetBorder(&yogaNode, YGEdgeBottom))};
+
+  layoutMetrics.contentInsets = EdgeInsets{
+      layoutMetrics.borderWidth.left +
+          floatFromYogaFloat(YGNodeLayoutGetPadding(&yogaNode, YGEdgeLeft)),
+      layoutMetrics.borderWidth.top +
+          floatFromYogaFloat(YGNodeLayoutGetPadding(&yogaNode, YGEdgeTop)),
+      layoutMetrics.borderWidth.right +
+          floatFromYogaFloat(YGNodeLayoutGetPadding(&yogaNode, YGEdgeRight)),
+      layoutMetrics.borderWidth.bottom +
+          floatFromYogaFloat(YGNodeLayoutGetPadding(&yogaNode, YGEdgeBottom))};
+
+  layoutMetrics.displayType = yogaNode.getStyle().display == YGDisplayNone
+      ? DisplayType::None
+      : DisplayType::Flex;
 
   layoutMetrics.layoutDirection =
-    layout.direction == YGDirectionRTL ? LayoutDirection::RightToLeft : LayoutDirection::LeftToRight;
+      YGNodeLayoutGetDirection(&yogaNode) == YGDirectionRTL
+      ? LayoutDirection::RightToLeft
+      : LayoutDirection::LeftToRight;
 
   return layoutMetrics;
 }
 
+inline YGDirection yogaDirectionFromLayoutDirection(LayoutDirection direction) {
+  switch (direction) {
+    case LayoutDirection::Undefined:
+      return YGDirectionInherit;
+    case LayoutDirection::LeftToRight:
+      return YGDirectionLTR;
+    case LayoutDirection::RightToLeft:
+      return YGDirectionRTL;
+  }
+}
+
 inline void fromDynamic(const folly::dynamic &value, YGDirection &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "inherit") { result = YGDirectionInherit; return; }
-  if (stringValue == "ltr") { result = YGDirectionLTR; return; }
-  if (stringValue == "rtl") { result = YGDirectionRTL; return; }
+  if (stringValue == "inherit") {
+    result = YGDirectionInherit;
+    return;
+  }
+  if (stringValue == "ltr") {
+    result = YGDirectionLTR;
+    return;
+  }
+  if (stringValue == "rtl") {
+    result = YGDirectionRTL;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGFlexDirection &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "column") { result = YGFlexDirectionColumn; return; }
-  if (stringValue == "column-reverse") { result = YGFlexDirectionColumnReverse; return; }
-  if (stringValue == "row") { result = YGFlexDirectionRow; return; }
-  if (stringValue == "row-reverse") { result = YGFlexDirectionRowReverse; return; }
+  if (stringValue == "column") {
+    result = YGFlexDirectionColumn;
+    return;
+  }
+  if (stringValue == "column-reverse") {
+    result = YGFlexDirectionColumnReverse;
+    return;
+  }
+  if (stringValue == "row") {
+    result = YGFlexDirectionRow;
+    return;
+  }
+  if (stringValue == "row-reverse") {
+    result = YGFlexDirectionRowReverse;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGJustify &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "flex-start") { result = YGJustifyFlexStart; return; }
-  if (stringValue == "center") { result = YGJustifyCenter; return; }
-  if (stringValue == "flex-end") { result = YGJustifyFlexEnd; return; }
-  if (stringValue == "space-between") { result = YGJustifySpaceBetween; return; }
-  if (stringValue == "space-around") { result = YGJustifySpaceAround; return; }
-  if (stringValue == "space-evenly") { result = YGJustifySpaceEvenly; return; }
+  if (stringValue == "flex-start") {
+    result = YGJustifyFlexStart;
+    return;
+  }
+  if (stringValue == "center") {
+    result = YGJustifyCenter;
+    return;
+  }
+  if (stringValue == "flex-end") {
+    result = YGJustifyFlexEnd;
+    return;
+  }
+  if (stringValue == "space-between") {
+    result = YGJustifySpaceBetween;
+    return;
+  }
+  if (stringValue == "space-around") {
+    result = YGJustifySpaceAround;
+    return;
+  }
+  if (stringValue == "space-evenly") {
+    result = YGJustifySpaceEvenly;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGAlign &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "auto") { result = YGAlignAuto; return; }
-  if (stringValue == "flex-start") { result = YGAlignFlexStart; return; }
-  if (stringValue == "center") { result = YGAlignCenter; return; }
-  if (stringValue == "flex-end") { result = YGAlignFlexEnd; return; }
-  if (stringValue == "stretch") { result = YGAlignStretch; return; }
-  if (stringValue == "baseline") { result = YGAlignBaseline; return; }
-  if (stringValue == "between") { result = YGAlignSpaceBetween; return; }
-  if (stringValue == "space-around") { result = YGAlignSpaceAround; return; }
+  if (stringValue == "auto") {
+    result = YGAlignAuto;
+    return;
+  }
+  if (stringValue == "flex-start") {
+    result = YGAlignFlexStart;
+    return;
+  }
+  if (stringValue == "center") {
+    result = YGAlignCenter;
+    return;
+  }
+  if (stringValue == "flex-end") {
+    result = YGAlignFlexEnd;
+    return;
+  }
+  if (stringValue == "stretch") {
+    result = YGAlignStretch;
+    return;
+  }
+  if (stringValue == "baseline") {
+    result = YGAlignBaseline;
+    return;
+  }
+  if (stringValue == "between") {
+    result = YGAlignSpaceBetween;
+    return;
+  }
+  if (stringValue == "space-around") {
+    result = YGAlignSpaceAround;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGPositionType &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "relative") { result = YGPositionTypeRelative; return; }
-  if (stringValue == "absolute") { result = YGPositionTypeAbsolute; return; }
+  if (stringValue == "relative") {
+    result = YGPositionTypeRelative;
+    return;
+  }
+  if (stringValue == "absolute") {
+    result = YGPositionTypeAbsolute;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGWrap &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "no-wrap") { result = YGWrapNoWrap; return; }
-  if (stringValue == "wrap") { result = YGWrapWrap; return; }
-  if (stringValue == "wrap-reverse") { result = YGWrapWrapReverse; return; }
+  if (stringValue == "no-wrap") {
+    result = YGWrapNoWrap;
+    return;
+  }
+  if (stringValue == "wrap") {
+    result = YGWrapWrap;
+    return;
+  }
+  if (stringValue == "wrap-reverse") {
+    result = YGWrapWrapReverse;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGOverflow &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "visible") { result = YGOverflowVisible; return; }
-  if (stringValue == "hidden") { result = YGOverflowHidden; return; }
-  if (stringValue == "scroll") { result = YGOverflowScroll; return; }
+  if (stringValue == "visible") {
+    result = YGOverflowVisible;
+    return;
+  }
+  if (stringValue == "hidden") {
+    result = YGOverflowHidden;
+    return;
+  }
+  if (stringValue == "scroll") {
+    result = YGOverflowScroll;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, YGDisplay &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "flex") { result = YGDisplayFlex; return; }
-  if (stringValue == "none") { result = YGDisplayNone; return; }
+  if (stringValue == "flex") {
+    result = YGDisplayFlex;
+    return;
+  }
+  if (stringValue == "none") {
+    result = YGDisplayNone;
+    return;
+  }
   abort();
 }
 
@@ -187,10 +308,12 @@ inline void fromDynamic(const folly::dynamic &value, YGValue &result) {
       return;
     } else {
       if (stringValue.back() == '%') {
-        result = { folly::to<float>(stringValue.substr(0, stringValue.length() - 1)), YGUnitPercent };
+        result = {
+            folly::to<float>(stringValue.substr(0, stringValue.length() - 1)),
+            YGUnitPercent};
         return;
       } else {
-        result = { folly::to<float>(stringValue), YGUnitPoint };
+        result = {folly::to<float>(stringValue), YGUnitPoint};
         return;
       }
     }
@@ -214,7 +337,7 @@ inline void fromDynamic(const folly::dynamic &value, YGFloatOptional &result) {
 
 inline void fromDynamic(const folly::dynamic &value, Transform &result) {
   assert(value.isArray());
-  Transform transformMatrix;
+  auto transformMatrix = Transform{};
   for (const auto &tranformConfiguration : value) {
     assert(tranformConfiguration.isObject());
     auto pair = *tranformConfiguration.items().begin();
@@ -224,154 +347,231 @@ inline void fromDynamic(const folly::dynamic &value, Transform &result) {
     if (operation == "matrix") {
       assert(parameters.isArray());
       assert(parameters.size() == transformMatrix.matrix.size());
-      int i = 0;
+      auto i = 0;
       for (auto item : parameters) {
         transformMatrix.matrix[i++] = (Float)item.asDouble();
       }
     } else if (operation == "perspective") {
-      transformMatrix = transformMatrix * Transform::Perspective((Float)parameters.asDouble());
+      transformMatrix = transformMatrix *
+          Transform::Perspective((Float)parameters.asDouble());
     } else if (operation == "rotateX") {
-      transformMatrix = transformMatrix * Transform::Rotate((Float)parameters.asDouble(), 0, 0);
+      transformMatrix = transformMatrix *
+          Transform::Rotate((Float)parameters.asDouble(), 0, 0);
     } else if (operation == "rotateY") {
-      transformMatrix = transformMatrix * Transform::Rotate(0, (Float)parameters.asDouble(), 0);
+      transformMatrix = transformMatrix *
+          Transform::Rotate(0, (Float)parameters.asDouble(), 0);
     } else if (operation == "rotateZ") {
-      transformMatrix = transformMatrix * Transform::Rotate(0, 0, (Float)parameters.asDouble());
+      transformMatrix = transformMatrix *
+          Transform::Rotate(0, 0, (Float)parameters.asDouble());
     } else if (operation == "scale") {
-      transformMatrix = transformMatrix * Transform::Scale((Float)parameters.asDouble(), (Float)parameters.asDouble(), (Float)parameters.asDouble());
+      transformMatrix = transformMatrix *
+          Transform::Scale((Float)parameters.asDouble(),
+                           (Float)parameters.asDouble(),
+                           (Float)parameters.asDouble());
     } else if (operation == "scaleX") {
-      transformMatrix = transformMatrix * Transform::Scale((Float)parameters.asDouble(), 0, 0);
+      transformMatrix = transformMatrix *
+          Transform::Scale((Float)parameters.asDouble(), 0, 0);
     } else if (operation == "scaleY") {
-      transformMatrix = transformMatrix * Transform::Scale(0, (Float)parameters.asDouble(), 0);
+      transformMatrix = transformMatrix *
+          Transform::Scale(0, (Float)parameters.asDouble(), 0);
     } else if (operation == "scaleZ") {
-      transformMatrix = transformMatrix * Transform::Scale(0, 0, (Float)parameters.asDouble());
+      transformMatrix = transformMatrix *
+          Transform::Scale(0, 0, (Float)parameters.asDouble());
     } else if (operation == "translate") {
-      transformMatrix = transformMatrix * Transform::Translate(parameters[0].asDouble(), parameters[1].asDouble(), 0);
+      transformMatrix =
+          transformMatrix *
+          Transform::Translate(
+              parameters[0].asDouble(), parameters[1].asDouble(), 0);
     } else if (operation == "translateX") {
-      transformMatrix = transformMatrix * Transform::Translate(parameters.asDouble(), 0, 0);
+      transformMatrix =
+          transformMatrix * Transform::Translate(parameters.asDouble(), 0, 0);
     } else if (operation == "translateY") {
-      transformMatrix = transformMatrix * Transform::Translate(0, parameters.asDouble(), 0);
+      transformMatrix =
+          transformMatrix * Transform::Translate(0, parameters.asDouble(), 0);
     } else if (operation == "skewX") {
-      transformMatrix = transformMatrix * Transform::Skew(parameters.asDouble(), 0);
+      transformMatrix =
+          transformMatrix * Transform::Skew(parameters.asDouble(), 0);
     } else if (operation == "skewY") {
-      transformMatrix = transformMatrix * Transform::Skew(0, parameters.asDouble());
+      transformMatrix =
+          transformMatrix * Transform::Skew(0, parameters.asDouble());
     }
   }
 
   result = transformMatrix;
 }
 
-inline void fromDynamic(const folly::dynamic &value, PointerEventsMode &result) {
+inline void fromDynamic(
+    const folly::dynamic &value,
+    PointerEventsMode &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "auto") { result = PointerEventsMode::Auto; return; }
-  if (stringValue == "none") { result = PointerEventsMode::None; return; }
-  if (stringValue == "box-none") { result = PointerEventsMode::BoxNone; return; }
-  if (stringValue == "box-only") { result = PointerEventsMode::BoxOnly; return; }
+  if (stringValue == "auto") {
+    result = PointerEventsMode::Auto;
+    return;
+  }
+  if (stringValue == "none") {
+    result = PointerEventsMode::None;
+    return;
+  }
+  if (stringValue == "box-none") {
+    result = PointerEventsMode::BoxNone;
+    return;
+  }
+  if (stringValue == "box-only") {
+    result = PointerEventsMode::BoxOnly;
+    return;
+  }
   abort();
 }
 
 inline void fromDynamic(const folly::dynamic &value, BorderStyle &result) {
   assert(value.isString());
   auto stringValue = value.asString();
-  if (stringValue == "solid") { result = BorderStyle::Solid; return; }
-  if (stringValue == "dotted") { result = BorderStyle::Dotted; return; }
-  if (stringValue == "dashed") { result = BorderStyle::Dashed; return; }
+  if (stringValue == "solid") {
+    result = BorderStyle::Solid;
+    return;
+  }
+  if (stringValue == "dotted") {
+    result = BorderStyle::Dotted;
+    return;
+  }
+  if (stringValue == "dashed") {
+    result = BorderStyle::Dashed;
+    return;
+  }
   abort();
 }
 
-inline std::string toString(const std::array<float, YGDimensionCount> &dimensions) {
-  return "{" + folly::to<std::string>(dimensions[0]) + ", " + folly::to<std::string>(dimensions[1]) + "}";
+inline std::string toString(
+    const std::array<float, YGDimensionCount> &dimensions) {
+  return "{" + folly::to<std::string>(dimensions[0]) + ", " +
+      folly::to<std::string>(dimensions[1]) + "}";
 }
 
 inline std::string toString(const std::array<float, 4> &position) {
-  return "{" + folly::to<std::string>(position[0]) + ", " + folly::to<std::string>(position[1]) + "}";
+  return "{" + folly::to<std::string>(position[0]) + ", " +
+      folly::to<std::string>(position[1]) + "}";
 }
 
 inline std::string toString(const std::array<float, YGEdgeCount> &edges) {
-  return "{" +
-    folly::to<std::string>(edges[0]) + ", " +
-    folly::to<std::string>(edges[1]) + ", " +
-    folly::to<std::string>(edges[2]) + ", " +
-    folly::to<std::string>(edges[3]) + "}";
+  return "{" + folly::to<std::string>(edges[0]) + ", " +
+      folly::to<std::string>(edges[1]) + ", " +
+      folly::to<std::string>(edges[2]) + ", " +
+      folly::to<std::string>(edges[3]) + "}";
 }
 
 inline std::string toString(const YGDirection &value) {
   switch (value) {
-    case YGDirectionInherit: return "inherit";
-    case YGDirectionLTR: return "ltr";
-    case YGDirectionRTL: return "rtl";
+    case YGDirectionInherit:
+      return "inherit";
+    case YGDirectionLTR:
+      return "ltr";
+    case YGDirectionRTL:
+      return "rtl";
   }
 }
 
 inline std::string toString(const YGFlexDirection &value) {
   switch (value) {
-    case YGFlexDirectionColumn: return "column";
-    case YGFlexDirectionColumnReverse: return "column-reverse";
-    case YGFlexDirectionRow: return "row";
-    case YGFlexDirectionRowReverse: return "row-reverse";
+    case YGFlexDirectionColumn:
+      return "column";
+    case YGFlexDirectionColumnReverse:
+      return "column-reverse";
+    case YGFlexDirectionRow:
+      return "row";
+    case YGFlexDirectionRowReverse:
+      return "row-reverse";
   }
 }
 
 inline std::string toString(const YGJustify &value) {
   switch (value) {
-    case YGJustifyFlexStart: return "flex-start";
-    case YGJustifyCenter: return "center";
-    case YGJustifyFlexEnd: return "flex-end";
-    case YGJustifySpaceBetween: return "space-between";
-    case YGJustifySpaceAround: return "space-around";
-    case YGJustifySpaceEvenly: return "space-evenly";
+    case YGJustifyFlexStart:
+      return "flex-start";
+    case YGJustifyCenter:
+      return "center";
+    case YGJustifyFlexEnd:
+      return "flex-end";
+    case YGJustifySpaceBetween:
+      return "space-between";
+    case YGJustifySpaceAround:
+      return "space-around";
+    case YGJustifySpaceEvenly:
+      return "space-evenly";
   }
 }
 
 inline std::string toString(const YGAlign &value) {
   switch (value) {
-    case YGAlignAuto: return "auto";
-    case YGAlignFlexStart: return "flex-start";
-    case YGAlignCenter: return "center";
-    case YGAlignFlexEnd: return "flex-end";
-    case YGAlignStretch: return "stretch";
-    case YGAlignBaseline: return "baseline";
-    case YGAlignSpaceBetween: return "space-between";
-    case YGAlignSpaceAround: return "space-around";
+    case YGAlignAuto:
+      return "auto";
+    case YGAlignFlexStart:
+      return "flex-start";
+    case YGAlignCenter:
+      return "center";
+    case YGAlignFlexEnd:
+      return "flex-end";
+    case YGAlignStretch:
+      return "stretch";
+    case YGAlignBaseline:
+      return "baseline";
+    case YGAlignSpaceBetween:
+      return "space-between";
+    case YGAlignSpaceAround:
+      return "space-around";
   }
 }
 
 inline std::string toString(const YGPositionType &value) {
   switch (value) {
-    case YGPositionTypeRelative: return "relative";
-    case YGPositionTypeAbsolute: return "absolute";
+    case YGPositionTypeRelative:
+      return "relative";
+    case YGPositionTypeAbsolute:
+      return "absolute";
   }
 }
 
 inline std::string toString(const YGWrap &value) {
   switch (value) {
-    case YGWrapNoWrap: return "no-wrap";
-    case YGWrapWrap: return "wrap";
-    case YGWrapWrapReverse: return "wrap-reverse";
+    case YGWrapNoWrap:
+      return "no-wrap";
+    case YGWrapWrap:
+      return "wrap";
+    case YGWrapWrapReverse:
+      return "wrap-reverse";
   }
 }
 
 inline std::string toString(const YGOverflow &value) {
   switch (value) {
-    case YGOverflowVisible: return "visible";
-    case YGOverflowScroll: return "scroll";
-    case YGOverflowHidden: return "hidden";
+    case YGOverflowVisible:
+      return "visible";
+    case YGOverflowScroll:
+      return "scroll";
+    case YGOverflowHidden:
+      return "hidden";
   }
 }
 
 inline std::string toString(const YGDisplay &value) {
   switch (value) {
-    case YGDisplayFlex: return "flex";
-    case YGDisplayNone: return "none";
+    case YGDisplayFlex:
+      return "flex";
+    case YGDisplayNone:
+      return "none";
   }
 }
 
 inline std::string toString(const YGValue &value) {
   switch (value.unit) {
-    case YGUnitUndefined: return "undefined";
-    case YGUnitPoint: return folly::to<std::string>(value.value);
-    case YGUnitPercent: return folly::to<std::string>(value.value) + "%";
-    case YGUnitAuto: return "auto";
+    case YGUnitUndefined:
+      return "undefined";
+    case YGUnitPoint:
+      return folly::to<std::string>(value.value);
+    case YGUnitPercent:
+      return folly::to<std::string>(value.value) + "%";
+    case YGUnitAuto:
+      return "auto";
   }
 }
 
@@ -380,24 +580,29 @@ inline std::string toString(const YGFloatOptional &value) {
     return "undefined";
   }
 
-  return folly::to<std::string>(fabricFloatFromYogaFloat(value.getValue()));
+  return folly::to<std::string>(floatFromYogaFloat(value.getValue()));
 }
 
-inline std::string toString(const std::array<YGValue, YGDimensionCount> &value) {
-  return "{" +
-    toString(value[0]) + ", " +
-    toString(value[1]) + "}";
+inline std::string toString(
+    const std::array<YGValue, YGDimensionCount> &value) {
+  return "{" + toString(value[0]) + ", " + toString(value[1]) + "}";
 }
 
 inline std::string toString(const std::array<YGValue, YGEdgeCount> &value) {
-  static std::array<std::string, YGEdgeCount> names = {
-    {"left", "top", "right", "bottom", "start", "end", "horizontal", "vertical", "all"}
-  };
-
-  std::string result;
-  std::string separator = ", ";
-
-  for (int i = 0; i < YGEdgeCount; i++) {
+  static std::array<std::string, YGEdgeCount> names = {{"left",
+                                                        "top",
+                                                        "right",
+                                                        "bottom",
+                                                        "start",
+                                                        "end",
+                                                        "horizontal",
+                                                        "vertical",
+                                                        "all"}};
+
+  auto result = std::string{};
+  auto separator = std::string{", "};
+
+  for (auto i = 0; i < YGEdgeCount; i++) {
     if (value[i].unit == YGUnitUndefined) {
       continue;
     }
diff --git a/ReactCommon/fabric/components/view/primitives.h b/ReactCommon/fabric/components/view/primitives.h
index c7239ec3e9c91f..04967251093b83 100644
--- a/ReactCommon/fabric/components/view/primitives.h
+++ b/ReactCommon/fabric/components/view/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,33 +7,32 @@
 
 #pragma once
 
+#include <folly/Optional.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
+#include <array>
 #include <cmath>
-#include <fabric/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
 
 struct Transform {
-  std::array<Float, 16> matrix {{
-    1, 0, 0, 0,
-    0, 1, 0, 0,
-    0, 0, 1, 0,
-    0, 0, 0, 1
-  }};
+  std::array<Float, 16> matrix{
+      {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}};
 
   static Transform Identity() {
-    Transform transform;
-    return transform;
+    return {};
   }
 
   static Transform Perspective(const Float &perspective) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[11] = -1.0 / perspective;
     return transform;
   }
 
-  static Transform Scale(const Float &factorX, const Float &factorY, const Float &factorZ) {
-    Transform transform;
+  static Transform
+  Scale(const Float &factorX, const Float &factorY, const Float &factorZ) {
+    auto transform = Transform{};
     transform.matrix[0] = factorX;
     transform.matrix[5] = factorY;
     transform.matrix[10] = factorZ;
@@ -41,7 +40,7 @@ struct Transform {
   }
 
   static Transform Translate(const Float &x, const Float &y, const Float &z) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[12] = x;
     transform.matrix[13] = y;
     transform.matrix[14] = z;
@@ -49,14 +48,14 @@ struct Transform {
   }
 
   static Transform Skew(const Float &x, const Float &y) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[4] = std::tan(x);
     transform.matrix[1] = std::tan(y);
     return transform;
   }
 
   static Transform RotateX(const Float &radians) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[5] = std::cos(radians);
     transform.matrix[6] = std::sin(radians);
     transform.matrix[9] = -std::sin(radians);
@@ -65,7 +64,7 @@ struct Transform {
   }
 
   static Transform RotateY(const Float &radians) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[0] = std::cos(radians);
     transform.matrix[2] = -std::sin(radians);
     transform.matrix[8] = std::sin(radians);
@@ -74,7 +73,7 @@ struct Transform {
   }
 
   static Transform RotateZ(const Float &radians) {
-    Transform transform;
+    auto transform = Transform{};
     transform.matrix[0] = std::cos(radians);
     transform.matrix[1] = std::sin(radians);
     transform.matrix[4] = -std::sin(radians);
@@ -83,15 +82,21 @@ struct Transform {
   }
 
   static Transform Rotate(const Float &x, const Float &y, const Float &z) {
-    Transform transform;
-    if (x != 0) { transform = transform * Transform::RotateX(x); }
-    if (y != 0) { transform = transform * Transform::RotateY(y); }
-    if (z != 0) { transform = transform * Transform::RotateZ(z); }
+    auto transform = Transform{};
+    if (x != 0) {
+      transform = transform * Transform::RotateX(x);
+    }
+    if (y != 0) {
+      transform = transform * Transform::RotateY(y);
+    }
+    if (z != 0) {
+      transform = transform * Transform::RotateZ(z);
+    }
     return transform;
   }
 
-  bool operator ==(const Transform& rhs) const {
-    for (int i = 0; i < 16; i++) {
+  bool operator==(const Transform &rhs) const {
+    for (auto i = 0; i < 16; i++) {
       if (matrix[i] != rhs.matrix[i]) {
         return false;
       }
@@ -99,62 +104,233 @@ struct Transform {
     return true;
   }
 
-  bool operator !=(const Transform& rhs) const {
+  bool operator!=(const Transform &rhs) const {
     return !(*this == rhs);
   }
 
-  Transform operator *(const Transform& rhs) const {
+  Transform operator*(const Transform &rhs) const {
     if (*this == Transform::Identity()) {
       return rhs;
     }
 
-    const Transform &lhs = *this;
-    Transform result;
-
-    Float lhs00 = lhs.matrix[0], lhs01 = lhs.matrix[1], lhs02 = lhs.matrix[2], lhs03 = lhs.matrix[3],
-    lhs10 = lhs.matrix[4], lhs11 = lhs.matrix[5], lhs12 = lhs.matrix[6], lhs13 = lhs.matrix[7],
-    lhs20 = lhs.matrix[8], lhs21 = lhs.matrix[9], lhs22 = lhs.matrix[10], lhs23 = lhs.matrix[11],
-    lhs30 = lhs.matrix[12], lhs31 = lhs.matrix[13], lhs32 = lhs.matrix[14], lhs33 = lhs.matrix[15];
-
-    Float rhs0 = rhs.matrix[0], rhs1 = rhs.matrix[1], rhs2 = rhs.matrix[2], rhs3 = rhs.matrix[3];
-    result.matrix[0] = rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
-    result.matrix[1] = rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
-    result.matrix[2] = rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
-    result.matrix[3] = rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
-
-    rhs0 = rhs.matrix[4]; rhs1 = rhs.matrix[5]; rhs2 = rhs.matrix[6]; rhs3 = rhs.matrix[7];
-    result.matrix[4] = rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
-    result.matrix[5] = rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
-    result.matrix[6] = rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
-    result.matrix[7] = rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
-
-    rhs0 = rhs.matrix[8]; rhs1 = rhs.matrix[9]; rhs2 = rhs.matrix[10]; rhs3 = rhs.matrix[11];
-    result.matrix[8] = rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
-    result.matrix[9] = rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
-    result.matrix[10] = rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
-    result.matrix[11] = rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
-
-    rhs0 = rhs.matrix[12]; rhs1 = rhs.matrix[13]; rhs2 = rhs.matrix[14]; rhs3 = rhs.matrix[15];
-    result.matrix[12] = rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
-    result.matrix[13] = rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
-    result.matrix[14] = rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
-    result.matrix[15] = rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
+    const auto &lhs = *this;
+    auto result = Transform{};
+
+    auto lhs00 = lhs.matrix[0], lhs01 = lhs.matrix[1], lhs02 = lhs.matrix[2],
+         lhs03 = lhs.matrix[3], lhs10 = lhs.matrix[4], lhs11 = lhs.matrix[5],
+         lhs12 = lhs.matrix[6], lhs13 = lhs.matrix[7], lhs20 = lhs.matrix[8],
+         lhs21 = lhs.matrix[9], lhs22 = lhs.matrix[10], lhs23 = lhs.matrix[11],
+         lhs30 = lhs.matrix[12], lhs31 = lhs.matrix[13], lhs32 = lhs.matrix[14],
+         lhs33 = lhs.matrix[15];
+
+    auto rhs0 = rhs.matrix[0], rhs1 = rhs.matrix[1], rhs2 = rhs.matrix[2],
+         rhs3 = rhs.matrix[3];
+    result.matrix[0] =
+        rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
+    result.matrix[1] =
+        rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
+    result.matrix[2] =
+        rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
+    result.matrix[3] =
+        rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
+
+    rhs0 = rhs.matrix[4];
+    rhs1 = rhs.matrix[5];
+    rhs2 = rhs.matrix[6];
+    rhs3 = rhs.matrix[7];
+    result.matrix[4] =
+        rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
+    result.matrix[5] =
+        rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
+    result.matrix[6] =
+        rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
+    result.matrix[7] =
+        rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
+
+    rhs0 = rhs.matrix[8];
+    rhs1 = rhs.matrix[9];
+    rhs2 = rhs.matrix[10];
+    rhs3 = rhs.matrix[11];
+    result.matrix[8] =
+        rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
+    result.matrix[9] =
+        rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
+    result.matrix[10] =
+        rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
+    result.matrix[11] =
+        rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
+
+    rhs0 = rhs.matrix[12];
+    rhs1 = rhs.matrix[13];
+    rhs2 = rhs.matrix[14];
+    rhs3 = rhs.matrix[15];
+    result.matrix[12] =
+        rhs0 * lhs00 + rhs1 * lhs10 + rhs2 * lhs20 + rhs3 * lhs30;
+    result.matrix[13] =
+        rhs0 * lhs01 + rhs1 * lhs11 + rhs2 * lhs21 + rhs3 * lhs31;
+    result.matrix[14] =
+        rhs0 * lhs02 + rhs1 * lhs12 + rhs2 * lhs22 + rhs3 * lhs32;
+    result.matrix[15] =
+        rhs0 * lhs03 + rhs1 * lhs13 + rhs2 * lhs23 + rhs3 * lhs33;
 
     return result;
   }
 };
 
-enum class PointerEventsMode {
-  Auto,
-  None,
-  BoxNone,
-  BoxOnly
+enum class PointerEventsMode { Auto, None, BoxNone, BoxOnly };
+
+enum class BorderStyle { Solid, Dotted, Dashed };
+
+template <typename T>
+struct CascadedRectangleEdges {
+  using Counterpart = RectangleEdges<T>;
+  using OptionalT = folly::Optional<T>;
+
+  OptionalT left{};
+  OptionalT top{};
+  OptionalT right{};
+  OptionalT bottom{};
+  OptionalT start{};
+  OptionalT end{};
+  OptionalT horizontal{};
+  OptionalT vertical{};
+  OptionalT all{};
+
+  Counterpart resolve(bool isRTL, T defaults) const {
+    const auto leading = isRTL ? end : start;
+    const auto trailing = isRTL ? start : end;
+    const auto horizontalOrAllOrDefault =
+        horizontal.value_or(all.value_or(defaults));
+    const auto verticalOrAllOrDefault =
+        vertical.value_or(all.value_or(defaults));
+
+    return Counterpart{
+        .left = left.value_or(leading.value_or(horizontalOrAllOrDefault)),
+        .right = right.value_or(trailing.value_or(horizontalOrAllOrDefault)),
+        .top = top.value_or(verticalOrAllOrDefault),
+        .bottom = bottom.value_or(verticalOrAllOrDefault)};
+  }
+
+  bool operator==(const CascadedRectangleEdges<T> &rhs) const {
+    return std::tie(
+               this->left,
+               this->top,
+               this->right,
+               this->bottom,
+               this->start,
+               this->end,
+               this->horizontal,
+               this->vertical,
+               this->all) ==
+        std::tie(
+               rhs.left,
+               rhs.top,
+               rhs.right,
+               rhs.bottom,
+               rhs.start,
+               rhs.end,
+               rhs.horizontal,
+               rhs.vertical,
+               rhs.all);
+  }
+
+  bool operator!=(const CascadedRectangleEdges<T> &rhs) const {
+    return !(*this == rhs);
+  }
+};
+
+template <typename T>
+struct CascadedRectangleCorners {
+  using Counterpart = RectangleCorners<T>;
+  using OptionalT = folly::Optional<T>;
+
+  OptionalT topLeft{};
+  OptionalT topRight{};
+  OptionalT bottomLeft{};
+  OptionalT bottomRight{};
+  OptionalT topStart{};
+  OptionalT topEnd{};
+  OptionalT bottomStart{};
+  OptionalT bottomEnd{};
+  OptionalT all{};
+
+  Counterpart resolve(bool isRTL, T defaults) const {
+    const auto topLeading = isRTL ? topEnd : topStart;
+    const auto topTrailing = isRTL ? topStart : topEnd;
+    const auto bottomLeading = isRTL ? bottomEnd : bottomStart;
+    const auto bottomTrailing = isRTL ? bottomStart : bottomEnd;
+
+    return Counterpart{
+        .topLeft =
+            topLeft.value_or(topLeading.value_or(all.value_or(defaults))),
+        .topRight =
+            topRight.value_or(topTrailing.value_or(all.value_or(defaults))),
+        .bottomLeft =
+            bottomLeft.value_or(topLeading.value_or(all.value_or(defaults))),
+        .bottomRight =
+            bottomRight.value_or(topTrailing.value_or(all.value_or(defaults)))};
+  }
+
+  bool operator==(const CascadedRectangleCorners<T> &rhs) const {
+    return std::tie(
+               this->topLeft,
+               this->topRight,
+               this->bottomLeft,
+               this->bottomRight,
+               this->topStart,
+               this->topEnd,
+               this->bottomStart,
+               this->bottomEnd,
+               this->all) ==
+        std::tie(
+               rhs.topLeft,
+               rhs.topRight,
+               rhs.bottomLeft,
+               rhs.bottomRight,
+               rhs.topStart,
+               rhs.topEnd,
+               rhs.bottomStart,
+               rhs.bottomEnd,
+               rhs.all);
+  }
+
+  bool operator!=(const CascadedRectangleCorners<T> &rhs) const {
+    return !(*this == rhs);
+  }
 };
 
-enum class BorderStyle {
-  Solid,
-  Dotted,
-  Dashed
+using BorderWidths = RectangleEdges<Float>;
+using BorderStyles = RectangleEdges<BorderStyle>;
+using BorderColors = RectangleEdges<SharedColor>;
+using BorderRadii = RectangleCorners<Float>;
+
+using CascadedBorderWidths = CascadedRectangleEdges<Float>;
+using CascadedBorderStyles = CascadedRectangleEdges<BorderStyle>;
+using CascadedBorderColors = CascadedRectangleEdges<SharedColor>;
+using CascadedBorderRadii = CascadedRectangleCorners<Float>;
+
+struct BorderMetrics {
+  BorderColors borderColors{};
+  BorderWidths borderWidths{};
+  BorderRadii borderRadii{};
+  BorderStyles borderStyles{};
+
+  bool operator==(const BorderMetrics &rhs) const {
+    return std::tie(
+               this->borderColors,
+               this->borderWidths,
+               this->borderRadii,
+               this->borderStyles) ==
+        std::tie(
+               rhs.borderColors,
+               rhs.borderWidths,
+               rhs.borderRadii,
+               rhs.borderStyles);
+  }
+
+  bool operator!=(const BorderMetrics &rhs) const {
+    return !(*this == rhs);
+  }
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/propsConversions.h b/ReactCommon/fabric/components/view/propsConversions.h
index 80146b59fe8cdf..cd18390caa0759 100644
--- a/ReactCommon/fabric/components/view/propsConversions.h
+++ b/ReactCommon/fabric/components/view/propsConversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,70 +7,243 @@
 
 #pragma once
 
-#include <fabric/components/view/conversions.h>
-#include <fabric/core/propsConversions.h>
+#include <react/components/view/conversions.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-static std::array<YGValue, 2> convertRawProp(const RawProps &rawProps, const std::string &widthName, const std::string &heightName, const std::array<YGValue, 2> &defaultValue) {
-  std::array<YGValue, 2> dimentions;
-  dimentions[YGDimensionWidth] = convertRawProp(rawProps, widthName, defaultValue[YGDimensionWidth]);
-  dimentions[YGDimensionHeight] = convertRawProp(rawProps, heightName, defaultValue[YGDimensionHeight]);
+static inline std::array<YGValue, 2> convertRawProp(
+    const RawProps &rawProps,
+    const std::string &widthName,
+    const std::string &heightName,
+    const std::array<YGValue, 2> &sourceValue,
+    const std::array<YGValue, 2> &defaultValue) {
+  auto dimentions = defaultValue;
+  dimentions[YGDimensionWidth] = convertRawProp(
+      rawProps,
+      widthName,
+      sourceValue[YGDimensionWidth],
+      defaultValue[YGDimensionWidth]);
+  dimentions[YGDimensionHeight] = convertRawProp(
+      rawProps,
+      heightName,
+      sourceValue[YGDimensionHeight],
+      defaultValue[YGDimensionWidth]);
   return dimentions;
 }
 
-static std::array<YGValue, YGEdgeCount> convertRawProp(const RawProps &rawProps, const std::string &prefix, const std::array<YGValue, YGEdgeCount> &defaultValue) {
-  std::array<YGValue, YGEdgeCount> result = defaultValue;
-  result[YGEdgeLeft] = convertRawProp(rawProps, prefix + "Left", defaultValue[YGEdgeLeft]);
-  result[YGEdgeTop] = convertRawProp(rawProps, prefix + "Top", defaultValue[YGEdgeTop]);
-  result[YGEdgeRight] = convertRawProp(rawProps, prefix + "Right", defaultValue[YGEdgeRight]);
-  result[YGEdgeBottom] = convertRawProp(rawProps, prefix + "Bottom", defaultValue[YGEdgeBottom]);
-  result[YGEdgeStart] = convertRawProp(rawProps, prefix + "Start", defaultValue[YGEdgeStart]);
-  result[YGEdgeEnd] = convertRawProp(rawProps, prefix + "End", defaultValue[YGEdgeEnd]);
-  result[YGEdgeHorizontal] = convertRawProp(rawProps, prefix + "Horizontal", defaultValue[YGEdgeHorizontal]);
-  result[YGEdgeVertical] = convertRawProp(rawProps, prefix + "Vertical", defaultValue[YGEdgeVertical]);
-  result[YGEdgeAll] = convertRawProp(rawProps, prefix, defaultValue[YGEdgeAll]);
+static inline std::array<YGValue, YGEdgeCount> convertRawProp(
+    const RawProps &rawProps,
+    const std::string &prefix,
+    const std::string &suffix,
+    const std::array<YGValue, YGEdgeCount> &sourceValue,
+    const std::array<YGValue, YGEdgeCount> &defaultValue) {
+  auto result = defaultValue;
+  result[YGEdgeLeft] = convertRawProp(
+      rawProps,
+      prefix + "Left" + suffix,
+      sourceValue[YGEdgeLeft],
+      defaultValue[YGEdgeLeft]);
+  result[YGEdgeTop] = convertRawProp(
+      rawProps,
+      prefix + "Top" + suffix,
+      sourceValue[YGEdgeTop],
+      defaultValue[YGEdgeTop]);
+  result[YGEdgeRight] = convertRawProp(
+      rawProps,
+      prefix + "Right" + suffix,
+      sourceValue[YGEdgeRight],
+      defaultValue[YGEdgeRight]);
+  result[YGEdgeBottom] = convertRawProp(
+      rawProps,
+      prefix + "Bottom" + suffix,
+      sourceValue[YGEdgeBottom],
+      defaultValue[YGEdgeBottom]);
+  result[YGEdgeStart] = convertRawProp(
+      rawProps,
+      prefix + "Start" + suffix,
+      sourceValue[YGEdgeStart],
+      defaultValue[YGEdgeStart]);
+  result[YGEdgeEnd] = convertRawProp(
+      rawProps,
+      prefix + "End" + suffix,
+      sourceValue[YGEdgeEnd],
+      defaultValue[YGEdgeEnd]);
+  result[YGEdgeHorizontal] = convertRawProp(
+      rawProps,
+      prefix + "Horizontal" + suffix,
+      sourceValue[YGEdgeHorizontal],
+      defaultValue[YGEdgeHorizontal]);
+  result[YGEdgeVertical] = convertRawProp(
+      rawProps,
+      prefix + "Vertical" + suffix,
+      sourceValue[YGEdgeVertical],
+      defaultValue[YGEdgeVertical]);
+  result[YGEdgeAll] = convertRawProp(
+      rawProps,
+      prefix + suffix,
+      sourceValue[YGEdgeAll],
+      defaultValue[YGEdgeAll]);
   return result;
 }
 
-static std::array<YGValue, YGEdgeCount> convertRawProp(const RawProps &rawProps, const std::array<YGValue, YGEdgeCount> &defaultValue) {
-  std::array<YGValue, YGEdgeCount> result = defaultValue;
-  result[YGEdgeLeft] = convertRawProp(rawProps, "left", defaultValue[YGEdgeLeft]);
-  result[YGEdgeTop] = convertRawProp(rawProps, "top", defaultValue[YGEdgeTop]);
-  result[YGEdgeRight] = convertRawProp(rawProps, "right", defaultValue[YGEdgeRight]);
-  result[YGEdgeBottom] = convertRawProp(rawProps, "bottom", defaultValue[YGEdgeBottom]);
-  result[YGEdgeStart] = convertRawProp(rawProps, "start", defaultValue[YGEdgeStart]);
-  result[YGEdgeEnd] = convertRawProp(rawProps, "end", defaultValue[YGEdgeEnd]);
+static inline std::array<YGValue, YGEdgeCount> convertRawProp(
+    const RawProps &rawProps,
+    const std::array<YGValue, YGEdgeCount> &sourceValue,
+    const std::array<YGValue, YGEdgeCount> &defaultValue) {
+  auto result = defaultValue;
+  result[YGEdgeLeft] = convertRawProp(
+      rawProps, "left", sourceValue[YGEdgeLeft], defaultValue[YGEdgeLeft]);
+  result[YGEdgeTop] = convertRawProp(
+      rawProps, "top", sourceValue[YGEdgeTop], defaultValue[YGEdgeTop]);
+  result[YGEdgeRight] = convertRawProp(
+      rawProps, "right", sourceValue[YGEdgeRight], defaultValue[YGEdgeRight]);
+  result[YGEdgeBottom] = convertRawProp(
+      rawProps,
+      "bottom",
+      sourceValue[YGEdgeBottom],
+      defaultValue[YGEdgeBottom]);
+  result[YGEdgeStart] = convertRawProp(
+      rawProps, "start", sourceValue[YGEdgeStart], defaultValue[YGEdgeStart]);
+  result[YGEdgeEnd] = convertRawProp(
+      rawProps, "end", sourceValue[YGEdgeEnd], defaultValue[YGEdgeEnd]);
   return result;
 }
 
-static YGStyle convertRawProp(const RawProps &rawProps, const YGStyle &defaultValue) {
-  YGStyle yogaStyle;
-  yogaStyle.direction = convertRawProp(rawProps, "direction", defaultValue.direction);
-  yogaStyle.flexDirection = convertRawProp(rawProps, "flexDirection", defaultValue.flexDirection);
-  yogaStyle.justifyContent = convertRawProp(rawProps, "justifyContent", defaultValue.justifyContent);
-  yogaStyle.alignContent = convertRawProp(rawProps, "alignContent", defaultValue.alignContent);
-  yogaStyle.alignItems = convertRawProp(rawProps, "alignItems", defaultValue.alignItems);
-  yogaStyle.alignSelf = convertRawProp(rawProps, "alignSelf", defaultValue.alignSelf);
-  yogaStyle.positionType = convertRawProp(rawProps, "position", defaultValue.positionType);
-  yogaStyle.flexWrap = convertRawProp(rawProps, "flexWrap", defaultValue.flexWrap);
-  yogaStyle.overflow = convertRawProp(rawProps, "overflow", defaultValue.overflow);
-  yogaStyle.display = convertRawProp(rawProps, "display", defaultValue.display);
-  yogaStyle.flex = convertRawProp(rawProps, "flex", defaultValue.flex);
-  yogaStyle.flexGrow = convertRawProp(rawProps, "flexGrow", defaultValue.flexGrow);
-  yogaStyle.flexShrink = convertRawProp(rawProps, "flexShrink", defaultValue.flexShrink);
-  yogaStyle.flexBasis = convertRawProp(rawProps, "flexBasis", defaultValue.flexBasis);
-  yogaStyle.margin = convertRawProp(rawProps, "margin", defaultValue.margin);
-  yogaStyle.position = convertRawProp(rawProps, defaultValue.position);
-  yogaStyle.padding = convertRawProp(rawProps, "padding", defaultValue.padding);
-  yogaStyle.border = convertRawProp(rawProps, "border", defaultValue.border);
-  yogaStyle.dimensions = convertRawProp(rawProps, "width", "height", defaultValue.dimensions);
-  yogaStyle.minDimensions = convertRawProp(rawProps, "minWidth", "minHeight", defaultValue.minDimensions);
-  yogaStyle.maxDimensions = convertRawProp(rawProps, "maxWidth", "maxHeight", defaultValue.maxDimensions);
-  yogaStyle.aspectRatio = convertRawProp(rawProps, "aspectRatio", defaultValue.aspectRatio);
+static inline YGStyle convertRawProp(
+    const RawProps &rawProps,
+    const YGStyle &sourceValue) {
+  auto yogaStyle = YGStyle{};
+  yogaStyle.direction = convertRawProp(
+      rawProps, "direction", sourceValue.direction, yogaStyle.direction);
+  yogaStyle.flexDirection = convertRawProp(
+      rawProps,
+      "flexDirection",
+      sourceValue.flexDirection,
+      yogaStyle.flexDirection);
+  yogaStyle.justifyContent = convertRawProp(
+      rawProps,
+      "justifyContent",
+      sourceValue.justifyContent,
+      yogaStyle.justifyContent);
+  yogaStyle.alignContent = convertRawProp(
+      rawProps,
+      "alignContent",
+      sourceValue.alignContent,
+      yogaStyle.alignContent);
+  yogaStyle.alignItems = convertRawProp(
+      rawProps, "alignItems", sourceValue.alignItems, yogaStyle.alignItems);
+  yogaStyle.alignSelf = convertRawProp(
+      rawProps, "alignSelf", sourceValue.alignSelf, yogaStyle.alignSelf);
+  yogaStyle.positionType = convertRawProp(
+      rawProps, "position", sourceValue.positionType, yogaStyle.positionType);
+  yogaStyle.flexWrap = convertRawProp(
+      rawProps, "flexWrap", sourceValue.flexWrap, yogaStyle.flexWrap);
+  yogaStyle.overflow = convertRawProp(
+      rawProps, "overflow", sourceValue.overflow, yogaStyle.overflow);
+  yogaStyle.display = convertRawProp(
+      rawProps, "display", sourceValue.display, yogaStyle.display);
+  yogaStyle.flex =
+      convertRawProp(rawProps, "flex", sourceValue.flex, yogaStyle.flex);
+  yogaStyle.flexGrow = convertRawProp(
+      rawProps, "flexGrow", sourceValue.flexGrow, yogaStyle.flexGrow);
+  yogaStyle.flexShrink = convertRawProp(
+      rawProps, "flexShrink", sourceValue.flexShrink, yogaStyle.flexShrink);
+  yogaStyle.flexBasis = convertRawProp(
+      rawProps, "flexBasis", sourceValue.flexBasis, yogaStyle.flexBasis);
+  yogaStyle.margin = convertRawProp(
+      rawProps, "margin", "", sourceValue.margin, yogaStyle.margin);
+  yogaStyle.position =
+      convertRawProp(rawProps, sourceValue.position, yogaStyle.position);
+  yogaStyle.padding = convertRawProp(
+      rawProps, "padding", "", sourceValue.padding, yogaStyle.padding);
+  yogaStyle.border = convertRawProp(
+      rawProps, "border", "Width", sourceValue.border, yogaStyle.border);
+  yogaStyle.dimensions = convertRawProp(
+      rawProps,
+      "width",
+      "height",
+      sourceValue.dimensions,
+      yogaStyle.dimensions);
+  yogaStyle.minDimensions = convertRawProp(
+      rawProps,
+      "minWidth",
+      "minHeight",
+      sourceValue.minDimensions,
+      yogaStyle.minDimensions);
+  yogaStyle.maxDimensions = convertRawProp(
+      rawProps,
+      "maxWidth",
+      "maxHeight",
+      sourceValue.maxDimensions,
+      yogaStyle.maxDimensions);
+  yogaStyle.aspectRatio = convertRawProp(
+      rawProps, "aspectRatio", sourceValue.aspectRatio, yogaStyle.aspectRatio);
   return yogaStyle;
 }
 
+template <typename T>
+static inline CascadedRectangleCorners<T> convertRawProp(
+    const RawProps &rawProps,
+    const std::string &prefix,
+    const std::string &suffix,
+    const CascadedRectangleCorners<T> &sourceValue) {
+  CascadedRectangleCorners<T> result;
+
+  result.topLeft = convertRawProp(
+      rawProps, prefix + "TopLeft" + suffix, sourceValue.topLeft);
+  result.topRight = convertRawProp(
+      rawProps, prefix + "TopRight" + suffix, sourceValue.topRight);
+  result.bottomLeft = convertRawProp(
+      rawProps, prefix + "BottomLeft" + suffix, sourceValue.bottomLeft);
+  result.bottomRight = convertRawProp(
+      rawProps, prefix + "BottomRight" + suffix, sourceValue.bottomRight);
+
+  result.topStart = convertRawProp(
+      rawProps, prefix + "TopStart" + suffix, sourceValue.topStart);
+  result.topEnd =
+      convertRawProp(rawProps, prefix + "TopEnd" + suffix, sourceValue.topEnd);
+  result.bottomStart = convertRawProp(
+      rawProps, prefix + "BottomStart" + suffix, sourceValue.bottomStart);
+  result.bottomEnd = convertRawProp(
+      rawProps, prefix + "BottomEnd" + suffix, sourceValue.bottomEnd);
+
+  result.all = convertRawProp(rawProps, prefix + suffix, sourceValue.all);
+
+  return result;
+}
+
+template <typename T>
+static inline CascadedRectangleEdges<T> convertRawProp(
+    const RawProps &rawProps,
+    const std::string &prefix,
+    const std::string &suffix,
+    const CascadedRectangleEdges<T> &sourceValue) {
+  CascadedRectangleEdges<T> result;
+
+  result.left =
+      convertRawProp(rawProps, prefix + "Left" + suffix, sourceValue.left);
+  result.right =
+      convertRawProp(rawProps, prefix + "Right" + suffix, sourceValue.right);
+  result.top =
+      convertRawProp(rawProps, prefix + "Top" + suffix, sourceValue.top);
+  result.bottom =
+      convertRawProp(rawProps, prefix + "Bottom" + suffix, sourceValue.bottom);
+
+  result.start =
+      convertRawProp(rawProps, prefix + "Start" + suffix, sourceValue.start);
+  result.end =
+      convertRawProp(rawProps, prefix + "End" + suffix, sourceValue.end);
+  result.horizontal = convertRawProp(
+      rawProps, prefix + "Horizontal" + suffix, sourceValue.horizontal);
+  result.vertical = convertRawProp(
+      rawProps, prefix + "Vertical" + suffix, sourceValue.vertical);
+
+  result.all = convertRawProp(rawProps, prefix + suffix, sourceValue.all);
+
+  return result;
+}
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/tests/ViewTest.cpp b/ReactCommon/fabric/components/view/tests/ViewTest.cpp
index af1468dc62344b..acef5fdffc6376 100644
--- a/ReactCommon/fabric/components/view/tests/ViewTest.cpp
+++ b/ReactCommon/fabric/components/view/tests/ViewTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #include <memory>
 
-#include <fabric/components/view/ViewComponentDescriptor.h>
 #include <gtest/gtest.h>
+#include <react/components/view/ViewComponentDescriptor.h>
 
 using namespace facebook::react;
 
diff --git a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
index ddfc55180b6b03..298295f2146659 100644
--- a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
+++ b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,19 +10,17 @@
 #include <algorithm>
 #include <memory>
 
-#include <fabric/components/view/conversions.h>
-#include <fabric/core/LayoutContext.h>
-#include <fabric/core/LayoutConstraints.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
+#include <react/components/view/conversions.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/core/LayoutContext.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 #include <yoga/Yoga.h>
 
 namespace facebook {
 namespace react {
 
-YogaLayoutableShadowNode::YogaLayoutableShadowNode():
-  yogaNode_({}),
-  yogaConfig_(nullptr) {
-
+YogaLayoutableShadowNode::YogaLayoutableShadowNode()
+    : yogaNode_({}), yogaConfig_(nullptr) {
   initializeYogaConfig(yogaConfig_);
 
   yogaNode_.setConfig(&yogaConfig_);
@@ -31,11 +29,8 @@ YogaLayoutableShadowNode::YogaLayoutableShadowNode():
 }
 
 YogaLayoutableShadowNode::YogaLayoutableShadowNode(
-  const YogaLayoutableShadowNode &layoutableShadowNode
-):
-  yogaNode_(layoutableShadowNode.yogaNode_),
-  yogaConfig_(nullptr) {
-
+    const YogaLayoutableShadowNode &layoutableShadowNode)
+    : yogaNode_(layoutableShadowNode.yogaNode_), yogaConfig_(nullptr) {
   initializeYogaConfig(yogaConfig_);
 
   yogaNode_.setConfig(&yogaConfig_);
@@ -69,7 +64,8 @@ void YogaLayoutableShadowNode::setHasNewLayout(bool hasNewLayout) {
 void YogaLayoutableShadowNode::enableMeasurement() {
   ensureUnsealed();
 
-  yogaNode_.setMeasureFunc(YogaLayoutableShadowNode::yogaNodeMeasureCallbackConnector);
+  yogaNode_.setMeasureFunc(
+      YogaLayoutableShadowNode::yogaNodeMeasureCallbackConnector);
 }
 
 void YogaLayoutableShadowNode::appendChild(YogaLayoutableShadowNode *child) {
@@ -79,7 +75,8 @@ void YogaLayoutableShadowNode::appendChild(YogaLayoutableShadowNode *child) {
   auto childYogaNodeRawPtr = &child->yogaNode_;
 
   if (childYogaNodeRawPtr->getOwner() != nullptr) {
-    child = static_cast<YogaLayoutableShadowNode *>(cloneAndReplaceChild(child, yogaNode_.getChildren().size()));
+    child = static_cast<YogaLayoutableShadowNode *>(
+        cloneAndReplaceChild(child, yogaNode_.getChildren().size()));
     childYogaNodeRawPtr = &child->yogaNode_;
     assert(childYogaNodeRawPtr->getOwner() == nullptr);
   }
@@ -87,10 +84,12 @@ void YogaLayoutableShadowNode::appendChild(YogaLayoutableShadowNode *child) {
   child->ensureUnsealed();
   childYogaNodeRawPtr->setOwner(yogaNodeRawPtr);
 
-  yogaNodeRawPtr->insertChild(childYogaNodeRawPtr, yogaNodeRawPtr->getChildren().size());
+  yogaNodeRawPtr->insertChild(
+      childYogaNodeRawPtr, yogaNodeRawPtr->getChildren().size());
 }
 
-void YogaLayoutableShadowNode::setChildren(std::vector<YogaLayoutableShadowNode *> children) {
+void YogaLayoutableShadowNode::setChildren(
+    std::vector<YogaLayoutableShadowNode *> children) {
   yogaNode_.setChildren({});
   for (const auto &child : children) {
     appendChild(child);
@@ -115,7 +114,8 @@ void YogaLayoutableShadowNode::layout(LayoutContext layoutContext) {
      * (and this is by design).
      */
     yogaConfig_.pointScaleFactor = layoutContext.pointScaleFactor;
-    YGNodeCalculateLayout(&yogaNode_, YGUndefined, YGUndefined, YGDirectionInherit);
+    YGNodeCalculateLayout(
+        &yogaNode_, YGUndefined, YGUndefined, YGDirectionInherit);
   }
 
   LayoutableShadowNode::layout(layoutContext);
@@ -124,21 +124,23 @@ void YogaLayoutableShadowNode::layout(LayoutContext layoutContext) {
 void YogaLayoutableShadowNode::layoutChildren(LayoutContext layoutContext) {
   for (const auto &childYogaNode : yogaNode_.getChildren()) {
     auto childNode =
-      static_cast<YogaLayoutableShadowNode *>(childYogaNode->getContext());
+        static_cast<YogaLayoutableShadowNode *>(childYogaNode->getContext());
 
-    LayoutMetrics childLayoutMetrics = layoutMetricsFromYogaNode(childNode->yogaNode_);
+    LayoutMetrics childLayoutMetrics =
+        layoutMetricsFromYogaNode(childNode->yogaNode_);
     childLayoutMetrics.pointScaleFactor = layoutContext.pointScaleFactor;
     childNode->setLayoutMetrics(childLayoutMetrics);
   }
 }
 
-std::vector<LayoutableShadowNode *> YogaLayoutableShadowNode::getLayoutableChildNodes() const {
+std::vector<LayoutableShadowNode *>
+YogaLayoutableShadowNode::getLayoutableChildNodes() const {
   std::vector<LayoutableShadowNode *> yogaLayoutableChildNodes;
   yogaLayoutableChildNodes.reserve(yogaNode_.getChildren().size());
 
   for (const auto &childYogaNode : yogaNode_.getChildren()) {
     auto childNode =
-      static_cast<YogaLayoutableShadowNode *>(childYogaNode->getContext());
+        static_cast<YogaLayoutableShadowNode *>(childYogaNode->getContext());
     yogaLayoutableChildNodes.push_back(childNode);
   }
 
@@ -147,32 +149,42 @@ std::vector<LayoutableShadowNode *> YogaLayoutableShadowNode::getLayoutableChild
 
 #pragma mark - Yoga Connectors
 
-YGNode *YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector(YGNode *oldYogaNode, YGNode *parentYogaNode, int childIndex) {
-  // At this point it is garanteed that all shadow nodes associated with yoga nodes are `YogaLayoutableShadowNode` subclasses.
+YGNode *YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector(
+    YGNode *oldYogaNode,
+    YGNode *parentYogaNode,
+    int childIndex) {
+  // At this point it is garanteed that all shadow nodes associated with yoga
+  // nodes are `YogaLayoutableShadowNode` subclasses.
   auto parentNode =
-    static_cast<YogaLayoutableShadowNode *>(parentYogaNode->getContext());
+      static_cast<YogaLayoutableShadowNode *>(parentYogaNode->getContext());
   auto oldNode =
-    static_cast<YogaLayoutableShadowNode *>(oldYogaNode->getContext());
-  auto clonedNode =
-    static_cast<YogaLayoutableShadowNode *>(parentNode->cloneAndReplaceChild(oldNode, childIndex));
+      static_cast<YogaLayoutableShadowNode *>(oldYogaNode->getContext());
+  auto clonedNode = static_cast<YogaLayoutableShadowNode *>(
+      parentNode->cloneAndReplaceChild(oldNode, childIndex));
   return &clonedNode->yogaNode_;
 }
 
-YGSize YogaLayoutableShadowNode::yogaNodeMeasureCallbackConnector(YGNode *yogaNode, float width, YGMeasureMode widthMode, float height, YGMeasureMode heightMode) {
-  auto shadowNodeRawPtr = static_cast<YogaLayoutableShadowNode *>(yogaNode->getContext());
+YGSize YogaLayoutableShadowNode::yogaNodeMeasureCallbackConnector(
+    YGNode *yogaNode,
+    float width,
+    YGMeasureMode widthMode,
+    float height,
+    YGMeasureMode heightMode) {
+  auto shadowNodeRawPtr =
+      static_cast<YogaLayoutableShadowNode *>(yogaNode->getContext());
 
-  auto minimumSize = Size {0, 0};
-  auto maximumSize = Size {kFloatMax, kFloatMax};
+  auto minimumSize = Size{0, 0};
+  auto maximumSize = Size{kFloatMax, kFloatMax};
 
   switch (widthMode) {
     case YGMeasureModeUndefined:
       break;
     case YGMeasureModeExactly:
-      minimumSize.width = fabricFloatFromYogaFloat(width);
-      maximumSize.width = fabricFloatFromYogaFloat(width);
+      minimumSize.width = floatFromYogaFloat(width);
+      maximumSize.width = floatFromYogaFloat(width);
       break;
     case YGMeasureModeAtMost:
-      maximumSize.width = fabricFloatFromYogaFloat(width);
+      maximumSize.width = floatFromYogaFloat(width);
       break;
   }
 
@@ -180,24 +192,23 @@ YGSize YogaLayoutableShadowNode::yogaNodeMeasureCallbackConnector(YGNode *yogaNo
     case YGMeasureModeUndefined:
       break;
     case YGMeasureModeExactly:
-      minimumSize.height = fabricFloatFromYogaFloat(height);
-      maximumSize.height = fabricFloatFromYogaFloat(height);
+      minimumSize.height = floatFromYogaFloat(height);
+      maximumSize.height = floatFromYogaFloat(height);
       break;
     case YGMeasureModeAtMost:
-      maximumSize.height = fabricFloatFromYogaFloat(height);
+      maximumSize.height = floatFromYogaFloat(height);
       break;
   }
 
   auto size = shadowNodeRawPtr->measure({minimumSize, maximumSize});
 
-  return YGSize {
-    yogaFloatFromFabricFloat(size.width),
-    yogaFloatFromFabricFloat(size.height)
-  };
+  return YGSize{yogaFloatFromFloat(size.width),
+                yogaFloatFromFloat(size.height)};
 }
 
 void YogaLayoutableShadowNode::initializeYogaConfig(YGConfig &config) {
-  config.cloneNodeCallback = YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector;
+  config.cloneNodeCallback =
+      YogaLayoutableShadowNode::yogaNodeCloneCallbackConnector;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.h b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.h
index 573f3c9640dcd2..8386937ac1e012 100644
--- a/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.h
+++ b/ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,26 +12,24 @@
 
 #include <yoga/YGNode.h>
 
-#include <fabric/components/view/YogaStylableProps.h>
-#include <fabric/core/LayoutableShadowNode.h>
-#include <fabric/core/Sealable.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/components/view/YogaStylableProps.h>
+#include <react/core/LayoutableShadowNode.h>
+#include <react/core/Sealable.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
 
-class YogaLayoutableShadowNode:
-  public LayoutableShadowNode,
-  public virtual DebugStringConvertible,
-  public virtual Sealable {
-
-public:
-
+class YogaLayoutableShadowNode : public LayoutableShadowNode,
+                                 public virtual DebugStringConvertible,
+                                 public virtual Sealable {
+ public:
 #pragma mark - Constructors
 
   YogaLayoutableShadowNode();
 
-  YogaLayoutableShadowNode(const YogaLayoutableShadowNode &layoutableShadowNode);
+  YogaLayoutableShadowNode(
+      const YogaLayoutableShadowNode &layoutableShadowNode);
 
 #pragma mark - Mutating Methods
 
@@ -43,13 +41,15 @@ class YogaLayoutableShadowNode:
 
   /*
    * Appends `child`'s Yoga node to the own Yoga node.
-   * Complements `ShadowNode::appendChild(...)` functionality from Yoga perspective.
+   * Complements `ShadowNode::appendChild(...)` functionality from Yoga
+   * perspective.
    */
   void appendChild(YogaLayoutableShadowNode *child);
 
   /*
-   * Sets Yoga children based on collection of `YogaLayoutableShadowNode` instances.
-   * Complements `ShadowNode::setChildren(...)` functionality from Yoga perspective.
+   * Sets Yoga children based on collection of `YogaLayoutableShadowNode`
+   * instances. Complements `ShadowNode::setChildren(...)` functionality from
+   * Yoga perspective.
    */
   void setChildren(std::vector<YogaLayoutableShadowNode *> children);
 
@@ -72,12 +72,12 @@ class YogaLayoutableShadowNode:
    * See `LayoutableShadowNode` for more details.
    */
   void layout(LayoutContext layoutContext) override;
-  
+
   void layoutChildren(LayoutContext layoutContext) override;
 
   std::vector<LayoutableShadowNode *> getLayoutableChildNodes() const override;
 
-protected:
+ protected:
   /*
    * All Yoga functions only accept non-const arguments, so we have to mark
    * Yoga node as `mutable` here to avoid `static_cast`ing the pointer to this
@@ -90,10 +90,18 @@ class YogaLayoutableShadowNode:
    */
   YGConfig yogaConfig_;
 
-private:
+ private:
   static void initializeYogaConfig(YGConfig &config);
-  static YGNode *yogaNodeCloneCallbackConnector(YGNode *oldYogaNode, YGNode *parentYogaNode, int childIndex);
-  static YGSize yogaNodeMeasureCallbackConnector(YGNode *yogaNode, float width, YGMeasureMode widthMode, float height, YGMeasureMode heightMode);
+  static YGNode *yogaNodeCloneCallbackConnector(
+      YGNode *oldYogaNode,
+      YGNode *parentYogaNode,
+      int childIndex);
+  static YGSize yogaNodeMeasureCallbackConnector(
+      YGNode *yogaNode,
+      float width,
+      YGMeasureMode widthMode,
+      float height,
+      YGMeasureMode heightMode);
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/components/view/yoga/YogaStylableProps.cpp b/ReactCommon/fabric/components/view/yoga/YogaStylableProps.cpp
index 165c7195cbe0cb..74391cf23f9c95 100644
--- a/ReactCommon/fabric/components/view/yoga/YogaStylableProps.cpp
+++ b/ReactCommon/fabric/components/view/yoga/YogaStylableProps.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #include "YogaStylableProps.h"
 
-#include <fabric/components/view/conversions.h>
-#include <fabric/core/propsConversions.h>
-#include <fabric/components/view/propsConversions.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/components/view/conversions.h>
+#include <react/components/view/propsConversions.h>
+#include <react/core/propsConversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 #include <yoga/YGNode.h>
 #include <yoga/Yoga.h>
 
@@ -19,41 +19,78 @@
 namespace facebook {
 namespace react {
 
-YogaStylableProps::YogaStylableProps(const YGStyle &yogaStyle):
-  yogaStyle(yogaStyle) {}
+YogaStylableProps::YogaStylableProps(const YGStyle &yogaStyle)
+    : yogaStyle(yogaStyle) {}
 
-YogaStylableProps::YogaStylableProps(const YogaStylableProps &sourceProps, const RawProps &rawProps):
-  yogaStyle(convertRawProp(rawProps, sourceProps.yogaStyle)) {};
+YogaStylableProps::YogaStylableProps(
+    const YogaStylableProps &sourceProps,
+    const RawProps &rawProps)
+    : yogaStyle(convertRawProp(rawProps, sourceProps.yogaStyle)){};
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList YogaStylableProps::getDebugProps() const {
-  YGStyle defaultYogaStyle;
+  auto defaultYogaStyle = YGStyle{};
   return {
-    debugStringConvertibleItem("direction", yogaStyle.direction, defaultYogaStyle.direction),
-    debugStringConvertibleItem("flexDirection", yogaStyle.flexDirection, defaultYogaStyle.flexDirection),
-    debugStringConvertibleItem("justifyContent", yogaStyle.justifyContent, defaultYogaStyle.justifyContent),
-    debugStringConvertibleItem("alignContent", yogaStyle.alignContent, defaultYogaStyle.alignContent),
-    debugStringConvertibleItem("alignItems", yogaStyle.alignItems, defaultYogaStyle.alignItems),
-    debugStringConvertibleItem("alignSelf", yogaStyle.alignSelf, defaultYogaStyle.alignSelf),
-    debugStringConvertibleItem("positionType", yogaStyle.positionType, defaultYogaStyle.positionType),
-    debugStringConvertibleItem("flexWrap", yogaStyle.flexWrap, defaultYogaStyle.flexWrap),
-    debugStringConvertibleItem("overflow", yogaStyle.overflow, defaultYogaStyle.overflow),
-    debugStringConvertibleItem("display", yogaStyle.display, defaultYogaStyle.display),
-    debugStringConvertibleItem("flex", yogaStyle.flex, defaultYogaStyle.flex),
-    debugStringConvertibleItem("flexGrow", yogaStyle.flexGrow, defaultYogaStyle.flexGrow),
-    debugStringConvertibleItem("flexShrink", yogaStyle.flexShrink, defaultYogaStyle.flexShrink),
-    debugStringConvertibleItem("flexBasis", yogaStyle.flexBasis, defaultYogaStyle.flexBasis),
-    debugStringConvertibleItem("margin", yogaStyle.margin, defaultYogaStyle.margin),
-    debugStringConvertibleItem("position", yogaStyle.position, defaultYogaStyle.position),
-    debugStringConvertibleItem("padding", yogaStyle.padding, defaultYogaStyle.padding),
-    debugStringConvertibleItem("border", yogaStyle.border, defaultYogaStyle.border),
-    debugStringConvertibleItem("dimensions", yogaStyle.dimensions, defaultYogaStyle.dimensions),
-    debugStringConvertibleItem("minDimensions", yogaStyle.minDimensions, defaultYogaStyle.minDimensions),
-    debugStringConvertibleItem("maxDimensions", yogaStyle.maxDimensions, defaultYogaStyle.maxDimensions),
-    debugStringConvertibleItem("aspectRatio", yogaStyle.aspectRatio, defaultYogaStyle.aspectRatio),
+      debugStringConvertibleItem(
+          "direction", yogaStyle.direction, defaultYogaStyle.direction),
+      debugStringConvertibleItem(
+          "flexDirection",
+          yogaStyle.flexDirection,
+          defaultYogaStyle.flexDirection),
+      debugStringConvertibleItem(
+          "justifyContent",
+          yogaStyle.justifyContent,
+          defaultYogaStyle.justifyContent),
+      debugStringConvertibleItem(
+          "alignContent",
+          yogaStyle.alignContent,
+          defaultYogaStyle.alignContent),
+      debugStringConvertibleItem(
+          "alignItems", yogaStyle.alignItems, defaultYogaStyle.alignItems),
+      debugStringConvertibleItem(
+          "alignSelf", yogaStyle.alignSelf, defaultYogaStyle.alignSelf),
+      debugStringConvertibleItem(
+          "positionType",
+          yogaStyle.positionType,
+          defaultYogaStyle.positionType),
+      debugStringConvertibleItem(
+          "flexWrap", yogaStyle.flexWrap, defaultYogaStyle.flexWrap),
+      debugStringConvertibleItem(
+          "overflow", yogaStyle.overflow, defaultYogaStyle.overflow),
+      debugStringConvertibleItem(
+          "display", yogaStyle.display, defaultYogaStyle.display),
+      debugStringConvertibleItem("flex", yogaStyle.flex, defaultYogaStyle.flex),
+      debugStringConvertibleItem(
+          "flexGrow", yogaStyle.flexGrow, defaultYogaStyle.flexGrow),
+      debugStringConvertibleItem(
+          "flexShrink", yogaStyle.flexShrink, defaultYogaStyle.flexShrink),
+      debugStringConvertibleItem(
+          "flexBasis", yogaStyle.flexBasis, defaultYogaStyle.flexBasis),
+      debugStringConvertibleItem(
+          "margin", yogaStyle.margin, defaultYogaStyle.margin),
+      debugStringConvertibleItem(
+          "position", yogaStyle.position, defaultYogaStyle.position),
+      debugStringConvertibleItem(
+          "padding", yogaStyle.padding, defaultYogaStyle.padding),
+      debugStringConvertibleItem(
+          "border", yogaStyle.border, defaultYogaStyle.border),
+      debugStringConvertibleItem(
+          "dimensions", yogaStyle.dimensions, defaultYogaStyle.dimensions),
+      debugStringConvertibleItem(
+          "minDimensions",
+          yogaStyle.minDimensions,
+          defaultYogaStyle.minDimensions),
+      debugStringConvertibleItem(
+          "maxDimensions",
+          yogaStyle.maxDimensions,
+          defaultYogaStyle.maxDimensions),
+      debugStringConvertibleItem(
+          "aspectRatio", yogaStyle.aspectRatio, defaultYogaStyle.aspectRatio),
   };
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/components/view/yoga/YogaStylableProps.h b/ReactCommon/fabric/components/view/yoga/YogaStylableProps.h
index c62bb03e7094d3..470a064cbe82b7 100644
--- a/ReactCommon/fabric/components/view/yoga/YogaStylableProps.h
+++ b/ReactCommon/fabric/components/view/yoga/YogaStylableProps.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 #include <yoga/YGStyle.h>
 
-#include <fabric/core/Props.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/core/Props.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -20,20 +20,22 @@ class YogaStylableProps;
 typedef std::shared_ptr<const YogaStylableProps> SharedYogaStylableProps;
 
 class YogaStylableProps {
-
-public:
-
+ public:
   YogaStylableProps() = default;
   YogaStylableProps(const YGStyle &yogaStyle);
-  YogaStylableProps(const YogaStylableProps &sourceProps, const RawProps &rawProps);
+  YogaStylableProps(
+      const YogaStylableProps &sourceProps,
+      const RawProps &rawProps);
 
 #pragma mark - Props
 
-  const YGStyle yogaStyle {};
+  const YGStyle yogaStyle{};
 
 #pragma mark - DebugStringConvertible (Partial)
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/BUCK b/ReactCommon/fabric/core/BUCK
index 8aa804678635e4..f03ab4b701b85f 100644
--- a/ReactCommon/fabric/core/BUCK
+++ b/ReactCommon/fabric/core/BUCK
@@ -1,5 +1,5 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
-load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "subdir_glob", "fb_xplat_cxx_test", "get_apple_compiler_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
+load("//tools/build_defs/oss:rn_defs.bzl", "ANDROID", "APPLE", "fb_xplat_cxx_test", "get_apple_compiler_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library", "subdir_glob")
 
 APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
 
@@ -23,7 +23,7 @@ rn_xplat_cxx_library(
             ("layout", "*.h"),
             ("shadownode", "*.h"),
         ],
-        prefix = "fabric/core",
+        prefix = "react/core",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -68,7 +68,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/core/componentdescriptor/ComponentDescriptor.h b/ReactCommon/fabric/core/componentdescriptor/ComponentDescriptor.h
index b84ec8eca305a2..6eb19fbacda19d 100644
--- a/ReactCommon/fabric/core/componentdescriptor/ComponentDescriptor.h
+++ b/ReactCommon/fabric/core/componentdescriptor/ComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/ShadowNode.h>
-#include <fabric/core/Props.h>
+#include <react/core/Props.h>
+#include <react/core/ShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -24,8 +24,7 @@ using SharedComponentDescriptor = std::shared_ptr<ComponentDescriptor>;
  * `ShadowNode`s (such as creating, cloning, props and children managing).
  */
 class ComponentDescriptor {
-public:
-
+ public:
   virtual ~ComponentDescriptor() = default;
 
   /*
@@ -45,24 +44,21 @@ class ComponentDescriptor {
    * Creates a new `ShadowNode` of a particular type.
    */
   virtual SharedShadowNode createShadowNode(
-    const ShadowNodeFragment &fragment
-  ) const = 0;
+      const ShadowNodeFragment &fragment) const = 0;
 
   /*
    * Clones a `ShadowNode` with optionally new `props` and/or `children`.
    */
   virtual UnsharedShadowNode cloneShadowNode(
-    const ShadowNode &sourceShadowNode,
-    const ShadowNodeFragment &fragment
-  ) const = 0;
+      const ShadowNode &sourceShadowNode,
+      const ShadowNodeFragment &fragment) const = 0;
 
   /*
    * Appends (by mutating) a given `childShadowNode` to `parentShadowNode`.
    */
   virtual void appendChild(
-    const SharedShadowNode &parentShadowNode,
-    const SharedShadowNode &childShadowNode
-  ) const = 0;
+      const SharedShadowNode &parentShadowNode,
+      const SharedShadowNode &childShadowNode) const = 0;
 
   /*
    * Creates a new `Props` of a particular type with all values copied from
@@ -71,18 +67,16 @@ class ComponentDescriptor {
    * will be used.
    */
   virtual SharedProps cloneProps(
-    const SharedProps &props,
-    const RawProps &rawProps
-  ) const = 0;
+      const SharedProps &props,
+      const RawProps &rawProps) const = 0;
 
   /*
    * Creates a new `EventEmitter` object compatible with particular type of
    * shadow nodes.
    */
   virtual SharedEventEmitter createEventEmitter(
-    const EventTarget &eventTarget,
-    const Tag &tag
-  ) const = 0;
+      SharedEventTarget eventTarget,
+      const Tag &tag) const = 0;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/componentdescriptor/ConcreteComponentDescriptor.h b/ReactCommon/fabric/core/componentdescriptor/ConcreteComponentDescriptor.h
index 165da071661fe2..7a52cb2d286029 100644
--- a/ReactCommon/fabric/core/componentdescriptor/ConcreteComponentDescriptor.h
+++ b/ReactCommon/fabric/core/componentdescriptor/ConcreteComponentDescriptor.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,14 +7,14 @@
 
 #pragma once
 
-#include <memory>
 #include <functional>
+#include <memory>
 
-#include <fabric/core/ComponentDescriptor.h>
-#include <fabric/core/Props.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/core/ShadowNodeFragment.h>
-#include <fabric/events/EventDispatcher.h>
+#include <react/core/ComponentDescriptor.h>
+#include <react/core/Props.h>
+#include <react/core/ShadowNode.h>
+#include <react/core/ShadowNodeFragment.h>
+#include <react/events/EventDispatcher.h>
 
 namespace facebook {
 namespace react {
@@ -25,18 +25,21 @@ namespace react {
  * if necessary.
  */
 template <typename ShadowNodeT>
-class ConcreteComponentDescriptor: public ComponentDescriptor {
-  static_assert(std::is_base_of<ShadowNode, ShadowNodeT>::value, "ShadowNodeT must be a descendant of ShadowNode");
+class ConcreteComponentDescriptor : public ComponentDescriptor {
+  static_assert(
+      std::is_base_of<ShadowNode, ShadowNodeT>::value,
+      "ShadowNodeT must be a descendant of ShadowNode");
 
   using SharedShadowNodeT = std::shared_ptr<const ShadowNodeT>;
   using ConcreteProps = typename ShadowNodeT::ConcreteProps;
   using SharedConcreteProps = typename ShadowNodeT::SharedConcreteProps;
   using ConcreteEventEmitter = typename ShadowNodeT::ConcreteEventEmitter;
-  using SharedConcreteEventEmitter = typename ShadowNodeT::SharedConcreteEventEmitter;
+  using SharedConcreteEventEmitter =
+      typename ShadowNodeT::SharedConcreteEventEmitter;
 
-public:
-  ConcreteComponentDescriptor(SharedEventDispatcher eventDispatcher):
-    eventDispatcher_(eventDispatcher) {}
+ public:
+  ConcreteComponentDescriptor(SharedEventDispatcher eventDispatcher)
+      : eventDispatcher_(eventDispatcher) {}
 
   ComponentHandle getComponentHandle() const override {
     return ShadowNodeT::Handle();
@@ -47,15 +50,13 @@ class ConcreteComponentDescriptor: public ComponentDescriptor {
   }
 
   SharedShadowNode createShadowNode(
-    const ShadowNodeFragment &fragment
-  ) const override {
+      const ShadowNodeFragment &fragment) const override {
     assert(std::dynamic_pointer_cast<const ConcreteProps>(fragment.props));
-    assert(std::dynamic_pointer_cast<const ConcreteEventEmitter>(fragment.eventEmitter));
+    assert(std::dynamic_pointer_cast<const ConcreteEventEmitter>(
+        fragment.eventEmitter));
 
-    auto shadowNode = std::make_shared<ShadowNodeT>(
-      fragment,
-      getCloneFunction()
-    );
+    auto shadowNode =
+        std::make_shared<ShadowNodeT>(fragment, getCloneFunction());
 
     adopt(shadowNode);
 
@@ -63,57 +64,53 @@ class ConcreteComponentDescriptor: public ComponentDescriptor {
   }
 
   UnsharedShadowNode cloneShadowNode(
-    const ShadowNode &sourceShadowNode,
-    const ShadowNodeFragment &fragment
-  ) const override {
-    auto shadowNode = std::make_shared<ShadowNodeT>(
-      sourceShadowNode,
-      fragment
-    );
+      const ShadowNode &sourceShadowNode,
+      const ShadowNodeFragment &fragment) const override {
+    auto shadowNode = std::make_shared<ShadowNodeT>(sourceShadowNode, fragment);
 
     adopt(shadowNode);
     return shadowNode;
   }
 
   void appendChild(
-    const SharedShadowNode &parentShadowNode,
-    const SharedShadowNode &childShadowNode
-  ) const override {
-    auto concreteParentShadowNode = std::static_pointer_cast<const ShadowNodeT>(parentShadowNode);
-    auto concreteNonConstParentShadowNode = std::const_pointer_cast<ShadowNodeT>(concreteParentShadowNode);
+      const SharedShadowNode &parentShadowNode,
+      const SharedShadowNode &childShadowNode) const override {
+    auto concreteParentShadowNode =
+        std::static_pointer_cast<const ShadowNodeT>(parentShadowNode);
+    auto concreteNonConstParentShadowNode =
+        std::const_pointer_cast<ShadowNodeT>(concreteParentShadowNode);
     concreteNonConstParentShadowNode->appendChild(childShadowNode);
   }
 
   virtual SharedProps cloneProps(
-    const SharedProps &props,
-    const RawProps &rawProps
-  ) const override {
+      const SharedProps &props,
+      const RawProps &rawProps) const override {
     return ShadowNodeT::Props(rawProps, props);
   };
 
   virtual SharedEventEmitter createEventEmitter(
-    const EventTarget &eventTarget,
-    const Tag &tag
-  ) const override {
-    return std::make_shared<ConcreteEventEmitter>(eventTarget, tag, eventDispatcher_);
+      SharedEventTarget eventTarget,
+      const Tag &tag) const override {
+    return std::make_shared<ConcreteEventEmitter>(
+        std::move(eventTarget), tag, eventDispatcher_);
   }
 
-protected:
-
+ protected:
   virtual void adopt(UnsharedShadowNode shadowNode) const {
     // Default implementation does nothing.
     assert(shadowNode->getComponentHandle() == getComponentHandle());
   }
 
-private:
-
-  mutable SharedEventDispatcher eventDispatcher_ {nullptr};
+ private:
+  mutable SharedEventDispatcher eventDispatcher_{nullptr};
 
   mutable ShadowNodeCloneFunction cloneFunction_;
 
   ShadowNodeCloneFunction getCloneFunction() const {
     if (!cloneFunction_) {
-      cloneFunction_ = [this](const ShadowNode &shadowNode, const ShadowNodeFragment &fragment) {
+      cloneFunction_ = [this](
+                           const ShadowNode &shadowNode,
+                           const ShadowNodeFragment &fragment) {
         return this->cloneShadowNode(shadowNode, fragment);
       };
     }
diff --git a/ReactCommon/fabric/core/conversions.h b/ReactCommon/fabric/core/conversions.h
index 1d058558dfca02..d8ea97279f2980 100644
--- a/ReactCommon/fabric/core/conversions.h
+++ b/ReactCommon/fabric/core/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,24 +7,30 @@
 
 #pragma once
 
-#include <fabric/core/LayoutPrimitives.h>
+#include <react/core/LayoutPrimitives.h>
 
 namespace facebook {
 namespace react {
 
 inline std::string toString(const LayoutDirection &layoutDirection) {
   switch (layoutDirection) {
-    case LayoutDirection::Undefined: return "undefined";
-    case LayoutDirection::LeftToRight: return "ltr";
-    case LayoutDirection::RightToLeft: return "rtl";
+    case LayoutDirection::Undefined:
+      return "undefined";
+    case LayoutDirection::LeftToRight:
+      return "ltr";
+    case LayoutDirection::RightToLeft:
+      return "rtl";
   }
 }
 
 inline std::string toString(const DisplayType &displayType) {
   switch (displayType) {
-    case DisplayType::None: return "none";
-    case DisplayType::Flex: return "flex";
-    case DisplayType::Inline: return "inline";
+    case DisplayType::None:
+      return "none";
+    case DisplayType::Flex:
+      return "flex";
+    case DisplayType::Inline:
+      return "inline";
   }
 }
 
diff --git a/ReactCommon/fabric/core/layout/LayoutConstraints.h b/ReactCommon/fabric/core/layout/LayoutConstraints.h
index 8f92cc22c1cc07..1afd10b5986495 100644
--- a/ReactCommon/fabric/core/layout/LayoutConstraints.h
+++ b/ReactCommon/fabric/core/layout/LayoutConstraints.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/LayoutPrimitives.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/core/LayoutPrimitives.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -17,9 +17,9 @@ namespace react {
  * Unified layout constraints for measuring.
  */
 struct LayoutConstraints {
-  Size minimumSize {0, 0};
-  Size maximumSize {kFloatUndefined, kFloatUndefined};
-  LayoutDirection layoutDirection;
+  Size minimumSize{0, 0};
+  Size maximumSize{kFloatUndefined, kFloatUndefined};
+  LayoutDirection layoutDirection{LayoutDirection::Undefined};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/layout/LayoutContext.h b/ReactCommon/fabric/core/layout/LayoutContext.h
index 255952df41b190..184d44f1caf92a 100644
--- a/ReactCommon/fabric/core/layout/LayoutContext.h
+++ b/ReactCommon/fabric/core/layout/LayoutContext.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include <fabric/graphics/Geometry.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -20,7 +20,7 @@ struct LayoutContext {
   /*
    * Compound absolute position of the node relative to the root node.
    */
-  Point absolutePosition {0, 0};
+  Point absolutePosition{0, 0};
 
   /*
    * Reflects the scale factor needed to convert from the logical coordinate
diff --git a/ReactCommon/fabric/core/layout/LayoutMetrics.h b/ReactCommon/fabric/core/layout/LayoutMetrics.h
index 5c915310a8c556..b7ee04a46fcace 100644
--- a/ReactCommon/fabric/core/layout/LayoutMetrics.h
+++ b/ReactCommon/fabric/core/layout/LayoutMetrics.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/LayoutPrimitives.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/core/LayoutPrimitives.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -18,29 +18,46 @@ namespace react {
  */
 struct LayoutMetrics {
   Rect frame;
-  EdgeInsets contentInsets {0};
-  EdgeInsets borderWidth {0};
-  DisplayType displayType {DisplayType::Flex};
-  LayoutDirection layoutDirection {LayoutDirection::Undefined};
-  Float pointScaleFactor {1.0};
+  EdgeInsets contentInsets{0};
+  EdgeInsets borderWidth{0};
+  DisplayType displayType{DisplayType::Flex};
+  LayoutDirection layoutDirection{LayoutDirection::Undefined};
+  Float pointScaleFactor{1.0};
 
   Rect getContentFrame() const {
-    return Rect {
-      Point {contentInsets.left, contentInsets.top},
-      Size {frame.size.width - contentInsets.left - contentInsets.right, frame.size.height - contentInsets.top - contentInsets.bottom}
-    };
+    return Rect{
+        Point{contentInsets.left, contentInsets.top},
+        Size{frame.size.width - contentInsets.left - contentInsets.right,
+             frame.size.height - contentInsets.top - contentInsets.bottom}};
   }
 
-  bool operator ==(const LayoutMetrics& rhs) const {
-    return
-      std::tie(this->frame, this->contentInsets, this->borderWidth, this->displayType, this->layoutDirection) ==
-      std::tie(rhs.frame, rhs.contentInsets, rhs.borderWidth, rhs.displayType, rhs.layoutDirection);
+  bool operator==(const LayoutMetrics &rhs) const {
+    return std::tie(
+               this->frame,
+               this->contentInsets,
+               this->borderWidth,
+               this->displayType,
+               this->layoutDirection,
+               this->pointScaleFactor) ==
+        std::tie(
+               rhs.frame,
+               rhs.contentInsets,
+               rhs.borderWidth,
+               rhs.displayType,
+               rhs.layoutDirection,
+               this->pointScaleFactor);
   }
 
-  bool operator !=(const LayoutMetrics& rhs) const {
+  bool operator!=(const LayoutMetrics &rhs) const {
     return !(*this == rhs);
   }
 };
 
+/*
+ * Represents some undefined, not-yet-computed or meaningless value of
+ * `LayoutMetrics` type.
+ */
+static const LayoutMetrics EmptyLayoutMetrics = {.frame = {.size = {-1, -1}}};
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/core/layout/LayoutPrimitives.h b/ReactCommon/fabric/core/layout/LayoutPrimitives.h
index 0d699aac3c6bec..6c6f524aec16f2 100644
--- a/ReactCommon/fabric/core/layout/LayoutPrimitives.h
+++ b/ReactCommon/fabric/core/layout/LayoutPrimitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,6 +7,9 @@
 
 #pragma once
 
+#include <functional>
+#include <limits>
+
 namespace facebook {
 namespace react {
 
@@ -31,3 +34,12 @@ enum class LayoutDirection {
 
 } // namespace react
 } // namespace facebook
+
+namespace std {
+template <>
+struct hash<facebook::react::LayoutDirection> {
+  size_t operator()(const facebook::react::LayoutDirection &v) const {
+    return hash<int>()(static_cast<int>(v));
+  }
+};
+} // namespace std
diff --git a/ReactCommon/fabric/core/layout/LayoutableShadowNode.cpp b/ReactCommon/fabric/core/layout/LayoutableShadowNode.cpp
index aa296769a691e4..f502fd4d0ef8cf 100644
--- a/ReactCommon/fabric/core/layout/LayoutableShadowNode.cpp
+++ b/ReactCommon/fabric/core/layout/LayoutableShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,12 @@
 
 #include "LayoutableShadowNode.h"
 
-#include <fabric/core/LayoutConstraints.h>
-#include <fabric/core/LayoutContext.h>
-#include <fabric/core/LayoutMetrics.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
-#include <fabric/graphics/conversions.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/core/LayoutContext.h>
+#include <react/core/LayoutMetrics.h>
+#include <react/core/ShadowNode.h>
+#include <react/debug/DebugStringConvertibleItem.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
@@ -31,6 +32,39 @@ bool LayoutableShadowNode::setLayoutMetrics(LayoutMetrics layoutMetrics) {
   return true;
 }
 
+bool LayoutableShadowNode::LayoutableShadowNode::isLayoutOnly() const {
+  return false;
+}
+
+LayoutMetrics LayoutableShadowNode::getRelativeLayoutMetrics(
+    const LayoutableShadowNode &ancestorLayoutableShadowNode) const {
+  std::vector<std::reference_wrapper<const ShadowNode>> ancestors;
+
+  auto &ancestorShadowNode =
+      dynamic_cast<const ShadowNode &>(ancestorLayoutableShadowNode);
+  auto &shadowNode = dynamic_cast<const ShadowNode &>(*this);
+
+  if (!shadowNode.constructAncestorPath(ancestorShadowNode, ancestors)) {
+    return EmptyLayoutMetrics;
+  }
+
+  auto layoutMetrics = getLayoutMetrics();
+
+  for (const auto &currentShadowNode : ancestors) {
+    auto layoutableCurrentShadowNode =
+        dynamic_cast<const LayoutableShadowNode *>(&currentShadowNode.get());
+
+    if (!layoutableCurrentShadowNode) {
+      return EmptyLayoutMetrics;
+    }
+
+    layoutMetrics.frame.origin +=
+        layoutableCurrentShadowNode->getLayoutMetrics().frame.origin;
+  }
+
+  return layoutMetrics;
+}
+
 void LayoutableShadowNode::cleanLayout() {
   isLayoutClean_ = true;
 }
@@ -74,12 +108,12 @@ void LayoutableShadowNode::layout(LayoutContext layoutContext) {
     child->ensureUnsealed();
     child->setHasNewLayout(false);
 
-    const LayoutMetrics childLayoutMetrics = child->getLayoutMetrics();
+    const auto childLayoutMetrics = child->getLayoutMetrics();
     if (childLayoutMetrics.displayType == DisplayType::None) {
       continue;
     }
 
-    LayoutContext childLayoutContext = LayoutContext(layoutContext);
+    auto childLayoutContext = LayoutContext(layoutContext);
     childLayoutContext.absolutePosition += childLayoutMetrics.frame.origin;
 
     child->layout(layoutContext);
@@ -90,28 +124,33 @@ void LayoutableShadowNode::layoutChildren(LayoutContext layoutContext) {
   // Default implementation does nothing.
 }
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList LayoutableShadowNode::getDebugProps() const {
-  SharedDebugStringConvertibleList list = {};
+  auto list = SharedDebugStringConvertibleList{};
 
   if (getHasNewLayout()) {
-    list.push_back(std::make_shared<DebugStringConvertibleItem>("hasNewLayout"));
+    list.push_back(
+        std::make_shared<DebugStringConvertibleItem>("hasNewLayout"));
   }
 
   if (!getIsLayoutClean()) {
     list.push_back(std::make_shared<DebugStringConvertibleItem>("dirty"));
   }
 
-  LayoutMetrics layoutMetrics = getLayoutMetrics();
-  LayoutMetrics defaultLayoutMetrics = LayoutMetrics();
+  auto layoutMetrics = getLayoutMetrics();
+  auto defaultLayoutMetrics = LayoutMetrics();
 
-  list.push_back(std::make_shared<DebugStringConvertibleItem>("frame", toString(layoutMetrics.frame)));
+  list.push_back(std::make_shared<DebugStringConvertibleItem>(
+      "frame", toString(layoutMetrics.frame)));
 
   if (layoutMetrics.borderWidth != defaultLayoutMetrics.borderWidth) {
-    list.push_back(std::make_shared<DebugStringConvertibleItem>("borderWidth", toString(layoutMetrics.borderWidth)));
+    list.push_back(std::make_shared<DebugStringConvertibleItem>(
+        "borderWidth", toString(layoutMetrics.borderWidth)));
   }
 
   if (layoutMetrics.contentInsets != defaultLayoutMetrics.contentInsets) {
-    list.push_back(std::make_shared<DebugStringConvertibleItem>("contentInsets", toString(layoutMetrics.contentInsets)));
+    list.push_back(std::make_shared<DebugStringConvertibleItem>(
+        "contentInsets", toString(layoutMetrics.contentInsets)));
   }
 
   if (layoutMetrics.displayType == DisplayType::None) {
@@ -124,6 +163,7 @@ SharedDebugStringConvertibleList LayoutableShadowNode::getDebugProps() const {
 
   return list;
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/core/layout/LayoutableShadowNode.h b/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
index febc222cfeac48..58b767443ea230 100644
--- a/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
+++ b/ReactCommon/fabric/core/layout/LayoutableShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,12 +9,12 @@
 
 #include <array>
 #include <cmath>
-#include <vector>
 #include <memory>
+#include <vector>
 
-#include <fabric/core/LayoutMetrics.h>
-#include <fabric/core/Sealable.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/core/LayoutMetrics.h>
+#include <react/core/Sealable.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -26,10 +26,9 @@ struct LayoutContext;
  * Describes all sufficient layout API (in approach-agnostic way)
  * which makes a concurrent layout possible.
  */
-class LayoutableShadowNode:
-  public virtual Sealable {
-
-public:
+class LayoutableShadowNode : public virtual Sealable {
+ public:
+  virtual ~LayoutableShadowNode() noexcept = default;
 
   /*
    * Measures the node (and node content, propbably recursivly) with
@@ -42,8 +41,9 @@ class LayoutableShadowNode:
    * Computes layout recusively.
    * Additional environmental constraints might be provided via `layoutContext`
    * argument.
-   * Default implementation basically calls `layoutChildren()` and then `layout()`
-   * (recursively), and provides some obvious performance optimization.
+   * Default implementation basically calls `layoutChildren()` and then
+   * `layout()` (recursively), and provides some obvious performance
+   * optimization.
    */
   virtual void layout(LayoutContext layoutContext);
 
@@ -52,8 +52,20 @@ class LayoutableShadowNode:
    */
   virtual LayoutMetrics getLayoutMetrics() const;
 
-protected:
+  /*
+   * Returns `true` if the node represents only information necessary for
+   * layout computation and can be safely removed from view hierarchy.
+   * Default implementation returns `false`.
+   */
+  virtual bool isLayoutOnly() const;
+
+  /*
+   * Returns layout metrics relatively to the given ancestor node.
+   */
+  LayoutMetrics getRelativeLayoutMetrics(
+      const LayoutableShadowNode &ancestorLayoutableShadowNode) const;
 
+ protected:
   /*
    * Clean or Dirty layout state:
    * Indicates whether all nodes (and possibly their subtrees) along the path
@@ -85,13 +97,16 @@ class LayoutableShadowNode:
   /*
    * Returns layoutable children to interate on.
    */
-  virtual std::vector<LayoutableShadowNode *> getLayoutableChildNodes() const = 0;
+  virtual std::vector<LayoutableShadowNode *> getLayoutableChildNodes()
+      const = 0;
 
   /*
    * In case layout algorithm needs to mutate this (probably sealed) node,
    * it has to clone and replace it in the hierarchy before to do so.
    */
-  virtual LayoutableShadowNode *cloneAndReplaceChild(LayoutableShadowNode *child, int suggestedIndex = -1) = 0;
+  virtual LayoutableShadowNode *cloneAndReplaceChild(
+      LayoutableShadowNode *child,
+      int suggestedIndex = -1) = 0;
 
   /*
    * Sets layout metrics for the shadow node.
@@ -101,12 +116,14 @@ class LayoutableShadowNode:
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   SharedDebugStringConvertibleList getDebugProps() const;
+#endif
 
-private:
-  LayoutMetrics layoutMetrics_ {};
-  bool hasNewLayout_ {false};
-  bool isLayoutClean_ {false};
+ private:
+  LayoutMetrics layoutMetrics_{};
+  bool hasNewLayout_{false};
+  bool isLayoutClean_{false};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/primitives/ReactPrimitives.h b/ReactCommon/fabric/core/primitives/ReactPrimitives.h
index b498f1a5264076..296266e1bef53c 100644
--- a/ReactCommon/fabric/core/primitives/ReactPrimitives.h
+++ b/ReactCommon/fabric/core/primitives/ReactPrimitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -20,7 +20,13 @@ namespace react {
  * `Tag` and `InstanceHandle` are used to address React Native components.
  */
 using Tag = int32_t;
-using InstanceHandle = struct InstanceHandleDummyStruct {} *;
+using InstanceHandle = struct InstanceHandleDummyStruct {
+} *;
+
+/*
+ * An id of a running Surface instance that is used to refer to the instance.
+ */
+using SurfaceId = int32_t;
 
 /*
  * `RawProps` represents untyped map with props comes from JavaScript side.
diff --git a/ReactCommon/fabric/core/primitives/Sealable.cpp b/ReactCommon/fabric/core/primitives/Sealable.cpp
index ffb1332d3fb974..cd1c2b029849cb 100644
--- a/ReactCommon/fabric/core/primitives/Sealable.cpp
+++ b/ReactCommon/fabric/core/primitives/Sealable.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,11 +26,11 @@ namespace react {
 
 #ifndef NDEBUG
 
-Sealable::Sealable(): sealed_(false) {}
+Sealable::Sealable() : sealed_(false) {}
 
-Sealable::Sealable(const Sealable &other): sealed_(false) {};
+Sealable::Sealable(const Sealable &other) : sealed_(false){};
 
-Sealable::Sealable(Sealable &&other) noexcept: sealed_(false) {};
+Sealable::Sealable(Sealable &&other) noexcept : sealed_(false){};
 
 Sealable::~Sealable() noexcept {};
 
diff --git a/ReactCommon/fabric/core/primitives/Sealable.h b/ReactCommon/fabric/core/primitives/Sealable.h
index 7454c373b1d588..b11afecbf9fce1 100644
--- a/ReactCommon/fabric/core/primitives/Sealable.h
+++ b/ReactCommon/fabric/core/primitives/Sealable.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,13 +7,14 @@
 
 #pragma once
 
-#import <atomic>
+#include <atomic>
 
 namespace facebook {
 namespace react {
 
 /*
- * Represents an object which can be *sealed* (imperatively marked as immutable).
+ * Represents an object which can be *sealed* (imperatively marked as
+ * immutable).
  *
  * The `sealed` flag is tight to a particular instance of the class and resets
  * to `false` for all newly created (by copy-constructor, assignment operator
@@ -21,22 +22,22 @@ namespace react {
  *
  * Why do we need this? In Fabric, some objects are semi-immutable
  * even if they are explicitly marked as `const`. It means that in some special
- * cases those objects can be const-casted-away and then mutated. That comes from
- * the fact that we share some object's life-cycle responsibilities with React
- * and the immutability is guaranteed by some logic splitted between native and
- * JavaScript worlds (which makes it impossible to fully use immutability
- * enforcement at a language level).
- * To detect possible errors as early as possible we additionally mark objects
- * as *sealed* after some stages and then enforce this at run-time.
+ * cases those objects can be const-casted-away and then mutated. That comes
+ * from the fact that we share some object's life-cycle responsibilities with
+ * React and the immutability is guaranteed by some logic splitted between
+ * native and JavaScript worlds (which makes it impossible to fully use
+ * immutability enforcement at a language level). To detect possible errors as
+ * early as possible we additionally mark objects as *sealed* after some stages
+ * and then enforce this at run-time.
  *
  * How to use:
  *   1. Inherit your class from `Sealable`.
  *   2. Call `ensureUnsealed()` in all cases where the object might be mutated:
  *      a. At the beginning of all *always* mutating `non-const` methods;
- *      b. Right before the place where actual mutation happens in all *possible*
- *         mutating `non-const` methods;
- *      c. Right after performing `const_cast`. (Optionally. This is not strictly
- *         necessary but might help detect problems earlier.)
+ *      b. Right before the place where actual mutation happens in all
+ * *possible* mutating `non-const` methods; c. Right after performing
+ * `const_cast`. (Optionally. This is not strictly necessary but might help
+ * detect problems earlier.)
  *   3. Call `seal()` at some point from which any modifications
  *      must be prevented.
  */
@@ -44,16 +45,18 @@ namespace react {
 #ifdef NDEBUG
 
 class Sealable {
-public:
+ public:
   inline void seal() const {}
-  inline bool getSealed() const { return true; }
+  inline bool getSealed() const {
+    return true;
+  }
   inline void ensureUnsealed() const {}
 };
 
 #else
 
 class Sealable {
-public:
+ public:
   Sealable();
   Sealable(const Sealable &other);
   Sealable(Sealable &&other) noexcept;
@@ -78,8 +81,8 @@ class Sealable {
    */
   void ensureUnsealed() const;
 
-private:
-  mutable std::atomic<bool> sealed_ {false};
+ private:
+  mutable std::atomic<bool> sealed_{false};
 };
 
 #endif
diff --git a/ReactCommon/fabric/core/propsConversions.h b/ReactCommon/fabric/core/propsConversions.h
index 350eb017e75315..c95fdb94570ba2 100644
--- a/ReactCommon/fabric/core/propsConversions.h
+++ b/ReactCommon/fabric/core/propsConversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,22 +9,33 @@
 
 #include <folly/Optional.h>
 #include <folly/dynamic.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/graphics/Geometry.h>
-#include <fabric/graphics/conversions.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
+#include <react/graphics/conversions.h>
 
 namespace facebook {
 namespace react {
 
-inline void fromDynamic(const folly::dynamic &value, bool &result) { result = value.getBool(); }
+inline void fromDynamic(const folly::dynamic &value, bool &result) {
+  result = value.getBool();
+}
 inline void fromDynamic(const folly::dynamic &value, int &result) {
-  // All numbers from JS are treated as double, and JS cannot represent int64 in practice.
-  // So this always converts the value to int64 instead.
+  // All numbers from JS are treated as double, and JS cannot represent int64 in
+  // practice. So this always converts the value to int64 instead.
   result = value.asInt();
 }
-inline void fromDynamic(const folly::dynamic &value, float &result) { result = (float)value.asDouble(); }
-inline void fromDynamic(const folly::dynamic &value, double &result) { result = value.asDouble(); }
-inline void fromDynamic(const folly::dynamic &value, std::string &result) { result = value.getString(); }
+inline void fromDynamic(const folly::dynamic &value, float &result) {
+  result = (float)value.asDouble();
+}
+inline void fromDynamic(const folly::dynamic &value, double &result) {
+  result = value.asDouble();
+}
+inline void fromDynamic(const folly::dynamic &value, std::string &result) {
+  result = value.getString();
+}
+inline void fromDynamic(const folly::dynamic &value, folly::dynamic &result) {
+  result = value;
+}
 
 template <typename T>
 inline void fromDynamic(const folly::dynamic &value, std::vector<T> &result) {
@@ -45,11 +56,10 @@ inline void fromDynamic(const folly::dynamic &value, std::vector<T> &result) {
 
 template <typename T>
 inline T convertRawProp(
-  const RawProps &rawProps,
-  const std::string &name,
-  const T &sourceValue,
-  const T &defaultValue = T()
-) {
+    const RawProps &rawProps,
+    const std::string &name,
+    const T &sourceValue,
+    const T &defaultValue = T()) {
   const auto &iterator = rawProps.find(name);
   if (iterator == rawProps.end()) {
     return sourceValue;
@@ -57,7 +67,8 @@ inline T convertRawProp(
 
   const auto &value = iterator->second;
 
-  // Special case: `null` always means `the prop was removed, use default value`.
+  // Special case: `null` always means `the prop was removed, use default
+  // value`.
   if (value.isNull()) {
     return defaultValue;
   }
@@ -69,11 +80,10 @@ inline T convertRawProp(
 
 template <typename T>
 inline static folly::Optional<T> convertRawProp(
-  const RawProps &rawProps,
-  const std::string &name,
-  const folly::Optional<T> &sourceValue,
-  const folly::Optional<T> &defaultValue = {}
-) {
+    const RawProps &rawProps,
+    const std::string &name,
+    const folly::Optional<T> &sourceValue,
+    const folly::Optional<T> &defaultValue = {}) {
   const auto &iterator = rawProps.find(name);
   if (iterator == rawProps.end()) {
     return sourceValue;
@@ -81,7 +91,8 @@ inline static folly::Optional<T> convertRawProp(
 
   const auto &value = iterator->second;
 
-  // Special case: `null` always means `the prop was removed, use default value`.
+  // Special case: `null` always means `the prop was removed, use default
+  // value`.
   if (value.isNull()) {
     return defaultValue;
   }
diff --git a/ReactCommon/fabric/core/shadownode/ConcreteShadowNode.h b/ReactCommon/fabric/core/shadownode/ConcreteShadowNode.h
index ddf7a8405d0c0f..c85abc748a6818 100644
--- a/ReactCommon/fabric/core/shadownode/ConcreteShadowNode.h
+++ b/ReactCommon/fabric/core/shadownode/ConcreteShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/Props.h>
-#include <fabric/core/ShadowNode.h>
+#include <react/core/Props.h>
+#include <react/core/ShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -20,14 +20,15 @@ namespace react {
  * with many handy features.
  */
 template <
-  const char *concreteComponentName,
-  typename PropsT,
-  typename EventEmitterT = EventEmitter
->
-class ConcreteShadowNode: public ShadowNode {
-  static_assert(std::is_base_of<Props, PropsT>::value, "PropsT must be a descendant of Props");
+    const char *concreteComponentName,
+    typename PropsT,
+    typename EventEmitterT = EventEmitter>
+class ConcreteShadowNode : public ShadowNode {
+  static_assert(
+      std::is_base_of<Props, PropsT>::value,
+      "PropsT must be a descendant of Props");
 
-public:
+ public:
   using ShadowNode::ShadowNode;
 
   using ConcreteProps = PropsT;
@@ -44,12 +45,18 @@ class ConcreteShadowNode: public ShadowNode {
     return ComponentHandle(concreteComponentName);
   }
 
-  static SharedConcreteProps Props(const RawProps &rawProps, const SharedProps &baseProps = nullptr) {
-    return std::make_shared<const PropsT>(baseProps ? *std::static_pointer_cast<const PropsT>(baseProps) : PropsT(), rawProps);
+  static SharedConcreteProps Props(
+      const RawProps &rawProps,
+      const SharedProps &baseProps = nullptr) {
+    return std::make_shared<const PropsT>(
+        baseProps ? *std::static_pointer_cast<const PropsT>(baseProps)
+                  : PropsT(),
+        rawProps);
   }
 
   static SharedConcreteProps defaultSharedProps() {
-    static const SharedConcreteProps defaultSharedProps = std::make_shared<const PropsT>();
+    static const SharedConcreteProps defaultSharedProps =
+        std::make_shared<const PropsT>();
     return defaultSharedProps;
   }
 
@@ -69,13 +76,15 @@ class ConcreteShadowNode: public ShadowNode {
   /*
    * Returns subset of children that are inherited from `SpecificShadowNodeT`.
    */
-  template<typename SpecificShadowNodeT>
+  template <typename SpecificShadowNodeT>
   std::vector<SpecificShadowNodeT *> getChildrenSlice() const {
     std::vector<SpecificShadowNodeT *> children;
     for (const auto &childShadowNode : getChildren()) {
-      auto specificChildShadowNode = dynamic_cast<const SpecificShadowNodeT *>(childShadowNode.get());
+      auto specificChildShadowNode =
+          dynamic_cast<const SpecificShadowNodeT *>(childShadowNode.get());
       if (specificChildShadowNode) {
-        children.push_back(const_cast<SpecificShadowNodeT *>(specificChildShadowNode));
+        children.push_back(
+            const_cast<SpecificShadowNodeT *>(specificChildShadowNode));
       }
     }
     return children;
diff --git a/ReactCommon/fabric/core/shadownode/LocalData.h b/ReactCommon/fabric/core/shadownode/LocalData.h
index 8b5b0fca093b7e..d62b3d29128768 100644
--- a/ReactCommon/fabric/core/shadownode/LocalData.h
+++ b/ReactCommon/fabric/core/shadownode/LocalData.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,9 @@
 
 #pragma once
 
-#include <fabric/core/Sealable.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <folly/dynamic.h>
+#include <react/core/Sealable.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -25,11 +26,13 @@ using SharedLocalData = std::shared_ptr<const LocalData>;
  * All `LocalData` objects *must* be immutable (sealed) when they became
  * a part of the shadow tree.
  */
-class LocalData:
-  public Sealable,
-  public DebugStringConvertible {
+class LocalData : public Sealable, public DebugStringConvertible {
+ public:
+  virtual ~LocalData() = default;
 
-  // Nothing.
+  virtual folly::dynamic getDynamic() const {
+    return folly::dynamic::object();
+  }
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/shadownode/Props.cpp b/ReactCommon/fabric/core/shadownode/Props.cpp
index f70632d4746476..945f7e666a3495 100644
--- a/ReactCommon/fabric/core/shadownode/Props.cpp
+++ b/ReactCommon/fabric/core/shadownode/Props.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,14 +7,19 @@
 
 #include "Props.h"
 
-#include <fabric/core/propsConversions.h>
 #include <folly/dynamic.h>
+#include <react/core/propsConversions.h>
 
 namespace facebook {
 namespace react {
 
-Props::Props(const Props &sourceProps, const RawProps &rawProps):
-  nativeId(convertRawProp(rawProps, "nativeID", sourceProps.nativeId)) {};
+Props::Props(const Props &sourceProps, const RawProps &rawProps)
+    : nativeId(convertRawProp(rawProps, "nativeID", sourceProps.nativeId))
+#ifdef ANDROID
+      ,
+      rawProps(rawProps)
+#endif
+          {};
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/core/shadownode/Props.h b/ReactCommon/fabric/core/shadownode/Props.h
index 1e349020a9720b..e2fd66d22c601a 100644
--- a/ReactCommon/fabric/core/shadownode/Props.h
+++ b/ReactCommon/fabric/core/shadownode/Props.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <folly/dynamic.h>
 
-#include <fabric/core/Sealable.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/Sealable.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
@@ -23,15 +23,17 @@ using SharedProps = std::shared_ptr<const Props>;
 /*
  * Represents the most generic props object.
  */
-class Props:
-  public virtual Sealable,
-  public virtual DebugStringConvertible {
-
-public:
+class Props : public virtual Sealable, public virtual DebugStringConvertible {
+ public:
   Props() = default;
   Props(const Props &sourceProps, const RawProps &rawProps);
+  virtual ~Props() = default;
 
   const std::string nativeId;
+
+#ifdef ANDROID
+  const RawProps rawProps;
+#endif
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNode.cpp b/ReactCommon/fabric/core/shadownode/ShadowNode.cpp
index 6310cab5f2342a..8855179b2bd59d 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNode.cpp
+++ b/ReactCommon/fabric/core/shadownode/ShadowNode.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,51 +9,48 @@
 
 #include <string>
 
-#include <fabric/core/ShadowNodeFragment.h>
-#include <fabric/debug/DebugStringConvertible.h>
-#include <fabric/debug/debugStringConvertibleUtils.h>
+#include <react/core/ShadowNodeFragment.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/debug/debugStringConvertibleUtils.h>
 
 namespace facebook {
 namespace react {
 
 SharedShadowNodeSharedList ShadowNode::emptySharedShadowNodeSharedList() {
-  static const auto emptySharedShadowNodeSharedList = std::make_shared<SharedShadowNodeList>();
+  static const auto emptySharedShadowNodeSharedList =
+      std::make_shared<SharedShadowNodeList>();
   return emptySharedShadowNodeSharedList;
 }
 
 #pragma mark - Constructors
 
 ShadowNode::ShadowNode(
-  const ShadowNodeFragment &fragment,
-  const ShadowNodeCloneFunction &cloneFunction
-):
-  tag_(fragment.tag),
-  rootTag_(fragment.rootTag),
-  props_(fragment.props),
-  eventEmitter_(fragment.eventEmitter),
-  children_(fragment.children ?: emptySharedShadowNodeSharedList()),
-  cloneFunction_(cloneFunction),
-  childrenAreShared_(true),
-  revision_(1) {
-
+    const ShadowNodeFragment &fragment,
+    const ShadowNodeCloneFunction &cloneFunction)
+    : tag_(fragment.tag),
+      rootTag_(fragment.rootTag),
+      props_(fragment.props),
+      eventEmitter_(fragment.eventEmitter),
+      children_(fragment.children ?: emptySharedShadowNodeSharedList()),
+      cloneFunction_(cloneFunction),
+      childrenAreShared_(true),
+      revision_(1) {
   assert(props_);
   assert(children_);
 }
 
 ShadowNode::ShadowNode(
-  const ShadowNode &sourceShadowNode,
-  const ShadowNodeFragment &fragment
-):
-  tag_(fragment.tag ?: sourceShadowNode.tag_),
-  rootTag_(fragment.rootTag ?: sourceShadowNode.rootTag_),
-  props_(fragment.props ?: sourceShadowNode.props_),
-  eventEmitter_(fragment.eventEmitter ?: sourceShadowNode.eventEmitter_),
-  children_(fragment.children ?: sourceShadowNode.children_),
-  localData_(fragment.localData ?: sourceShadowNode.localData_),
-  cloneFunction_(sourceShadowNode.cloneFunction_),
-  childrenAreShared_(true),
-  revision_(sourceShadowNode.revision_ + 1) {
-
+    const ShadowNode &sourceShadowNode,
+    const ShadowNodeFragment &fragment)
+    : tag_(fragment.tag ?: sourceShadowNode.tag_),
+      rootTag_(fragment.rootTag ?: sourceShadowNode.rootTag_),
+      props_(fragment.props ?: sourceShadowNode.props_),
+      eventEmitter_(fragment.eventEmitter ?: sourceShadowNode.eventEmitter_),
+      children_(fragment.children ?: sourceShadowNode.children_),
+      localData_(fragment.localData ?: sourceShadowNode.localData_),
+      cloneFunction_(sourceShadowNode.cloneFunction_),
+      childrenAreShared_(true),
+      revision_(sourceShadowNode.revision_ + 1) {
   assert(props_);
   assert(children_);
 }
@@ -109,16 +106,21 @@ void ShadowNode::appendChild(const SharedShadowNode &child) {
   ensureUnsealed();
 
   cloneChildrenIfShared();
-  auto nonConstChildren = std::const_pointer_cast<SharedShadowNodeList>(children_);
+  auto nonConstChildren =
+      std::const_pointer_cast<SharedShadowNodeList>(children_);
   nonConstChildren->push_back(child);
 }
 
-void ShadowNode::replaceChild(const SharedShadowNode &oldChild, const SharedShadowNode &newChild, int suggestedIndex) {
+void ShadowNode::replaceChild(
+    const SharedShadowNode &oldChild,
+    const SharedShadowNode &newChild,
+    int suggestedIndex) {
   ensureUnsealed();
 
   cloneChildrenIfShared();
 
-  auto nonConstChildren = std::const_pointer_cast<SharedShadowNodeList>(children_);
+  auto nonConstChildren =
+      std::const_pointer_cast<SharedShadowNodeList>(children_);
 
   if (suggestedIndex != -1 && suggestedIndex < nonConstChildren->size()) {
     if (nonConstChildren->at(suggestedIndex) == oldChild) {
@@ -127,7 +129,8 @@ void ShadowNode::replaceChild(const SharedShadowNode &oldChild, const SharedShad
     }
   }
 
-  std::replace(nonConstChildren->begin(), nonConstChildren->end(), oldChild, newChild);
+  std::replace(
+      nonConstChildren->begin(), nonConstChildren->end(), oldChild, newChild);
 }
 
 void ShadowNode::setLocalData(const SharedLocalData &localData) {
@@ -143,38 +146,43 @@ void ShadowNode::cloneChildrenIfShared() {
   children_ = std::make_shared<SharedShadowNodeList>(*children_);
 }
 
-#pragma mark - Equality
+bool ShadowNode::constructAncestorPath(
+    const ShadowNode &ancestorShadowNode,
+    std::vector<std::reference_wrapper<const ShadowNode>> &ancestors) const {
+  // Note: We have a decent idea of how to make it reasonable performant.
+  // This is not implemented yet though. See T36620537 for more details.
+  if (this == &ancestorShadowNode) {
+    return true;
+  }
 
-bool ShadowNode::operator==(const ShadowNode& rhs) const {
-  // Note: Child nodes are not considered as part of instance's value
-  // and/or identity.
-  return
-    tag_ == rhs.tag_ &&
-    rootTag_ == rhs.rootTag_ &&
-    props_ == rhs.props_ &&
-    eventEmitter_ == rhs.eventEmitter_ &&
-    localData_ == rhs.localData_;
-}
+  for (const auto &childShadowNode : *ancestorShadowNode.children_) {
+    if (constructAncestorPath(*childShadowNode, ancestors)) {
+      ancestors.push_back(std::ref(ancestorShadowNode));
+      return true;
+    }
+  }
 
-bool ShadowNode::operator!=(const ShadowNode& rhs) const {
-  return !(*this == rhs);
+  return false;
 }
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
 std::string ShadowNode::getDebugName() const {
   return getComponentName();
 }
 
 std::string ShadowNode::getDebugValue() const {
-  return "r" + folly::to<std::string>(revision_) + (getSealed() ? "/sealed" : "");
+  return "r" + folly::to<std::string>(revision_) +
+      (getSealed() ? "/sealed" : "");
 }
 
 SharedDebugStringConvertibleList ShadowNode::getDebugChildren() const {
-  SharedDebugStringConvertibleList debugChildren = {};
+  auto debugChildren = SharedDebugStringConvertibleList{};
 
   for (auto child : *children_) {
-    auto debugChild = std::dynamic_pointer_cast<const DebugStringConvertible>(child);
+    auto debugChild =
+        std::dynamic_pointer_cast<const DebugStringConvertible>(child);
     if (debugChild) {
       debugChildren.push_back(debugChild);
     }
@@ -184,12 +192,11 @@ SharedDebugStringConvertibleList ShadowNode::getDebugChildren() const {
 }
 
 SharedDebugStringConvertibleList ShadowNode::getDebugProps() const {
-  return
-    props_->getDebugProps() +
-    SharedDebugStringConvertibleList {
-      debugStringConvertibleItem("tag", folly::to<std::string>(tag_))
-    };
+  return props_->getDebugProps() +
+      SharedDebugStringConvertibleList{
+          debugStringConvertibleItem("tag", folly::to<std::string>(tag_))};
 }
+#endif
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNode.h b/ReactCommon/fabric/core/shadownode/ShadowNode.h
index 3f60b3d45ecf92..17dbb64bfbe6ed 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNode.h
+++ b/ReactCommon/fabric/core/shadownode/ShadowNode.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,16 +7,16 @@
 
 #pragma once
 
-#include <string>
 #include <memory>
+#include <string>
 #include <vector>
 
-#include <fabric/core/LocalData.h>
-#include <fabric/core/Props.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/core/Sealable.h>
-#include <fabric/events/EventEmitter.h>
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/core/LocalData.h>
+#include <react/core/Props.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/Sealable.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/events/EventEmitter.h>
 
 namespace facebook {
 namespace react {
@@ -27,21 +27,18 @@ class ShadowNode;
 
 using SharedShadowNode = std::shared_ptr<const ShadowNode>;
 using UnsharedShadowNode = std::shared_ptr<ShadowNode>;
-using SharedShadowNodeList = std::vector<std::shared_ptr<const ShadowNode>>;
+using SharedShadowNodeList = std::vector<SharedShadowNode>;
 using SharedShadowNodeSharedList = std::shared_ptr<const SharedShadowNodeList>;
 using SharedShadowNodeUnsharedList = std::shared_ptr<SharedShadowNodeList>;
 
 using ShadowNodeCloneFunction = std::function<UnsharedShadowNode(
-  const ShadowNode &sourceShadowNode,
-  const ShadowNodeFragment &fragment
-)>;
-
-class ShadowNode:
-  public virtual Sealable,
-  public virtual DebugStringConvertible,
-  public std::enable_shared_from_this<ShadowNode> {
+    const ShadowNode &sourceShadowNode,
+    const ShadowNodeFragment &fragment)>;
 
-public:
+class ShadowNode : public virtual Sealable,
+                   public virtual DebugStringConvertible,
+                   public std::enable_shared_from_this<ShadowNode> {
+ public:
   static SharedShadowNodeSharedList emptySharedShadowNodeSharedList();
 
 #pragma mark - Constructors
@@ -50,18 +47,18 @@ class ShadowNode:
    * Creates a Shadow Node based on fields specified in a `fragment`.
    */
   ShadowNode(
-    const ShadowNodeFragment &fragment,
-    const ShadowNodeCloneFunction &cloneFunction
-  );
+      const ShadowNodeFragment &fragment,
+      const ShadowNodeCloneFunction &cloneFunction);
 
   /*
    * Creates a Shadow Node via cloning given `sourceShadowNode` and
    * applying fields from given `fragment`.
    */
   ShadowNode(
-    const ShadowNode &sourceShadowNode,
-    const ShadowNodeFragment &fragment
-  );
+      const ShadowNode &sourceShadowNode,
+      const ShadowNodeFragment &fragment);
+
+  virtual ~ShadowNode() = default;
 
   /*
    * Clones the shadow node using stored `cloneFunction`.
@@ -92,7 +89,10 @@ class ShadowNode:
 #pragma mark - Mutating Methods
 
   void appendChild(const SharedShadowNode &child);
-  void replaceChild(const SharedShadowNode &oldChild, const SharedShadowNode &newChild, int suggestedIndex = -1);
+  void replaceChild(
+      const SharedShadowNode &oldChild,
+      const SharedShadowNode &newChild,
+      int suggestedIndex = -1);
   void clearSourceNode();
 
   /*
@@ -101,26 +101,31 @@ class ShadowNode:
    */
   void setLocalData(const SharedLocalData &localData);
 
-#pragma mark - Equality
-
   /*
-   * Equality operators.
-   * Use this to compare `ShadowNode`s values for equality (and non-equality).
-   * Same values indicates that nodes must not produce mutation instructions
-   * during tree diffing process.
-   * Child nodes are not considered as part of the value.
+   * Forms a list of all ancestors of the node relative to the given ancestor.
+   * The list starts from the parent node and ends with the given ancestor node.
+   * Returns `true` if successful, `false` otherwise.
+   * Thread-safe if the subtree is immutable.
+   * The theoretical complexity of this algorithm is `O(n)`. Use it wisely.
+   * The particular implementation can use some tricks to mitigate the
+   * complexity problem up to `0(ln(n))` but this is not guaranteed.
+   * Particular consumers should use appropriate cache techniques based on
+   * `childIndex` and `nodeId` tracking.
    */
-  virtual bool operator==(const ShadowNode& rhs) const;
-  virtual bool operator!=(const ShadowNode& rhs) const;
+  bool constructAncestorPath(
+      const ShadowNode &rootShadowNode,
+      std::vector<std::reference_wrapper<const ShadowNode>> &ancestors) const;
 
 #pragma mark - DebugStringConvertible
 
+#if RN_DEBUG_STRING_CONVERTIBLE
   std::string getDebugName() const override;
   std::string getDebugValue() const override;
   SharedDebugStringConvertibleList getDebugChildren() const override;
   SharedDebugStringConvertibleList getDebugProps() const override;
+#endif
 
-protected:
+ protected:
   Tag tag_;
   Tag rootTag_;
   SharedProps props_;
@@ -128,8 +133,7 @@ class ShadowNode:
   SharedShadowNodeSharedList children_;
   SharedLocalData localData_;
 
-private:
-
+ private:
   /*
    * Clones the list of children (and creates a new `shared_ptr` to it) if
    * `childrenAreShared_` flag is `true`.
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.cpp b/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.cpp
index 7ec1f8bfbe7620..494b9e6294616e 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.cpp
+++ b/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.h b/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.h
index aa7314de5c6261..8dabd15677f5c7 100644
--- a/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.h
+++ b/ReactCommon/fabric/core/shadownode/ShadowNodeFragment.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,11 @@
 
 #pragma once
 
-#include <fabric/core/LocalData.h>
-#include <fabric/core/Props.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/events/EventEmitter.h>
+#include <react/core/LocalData.h>
+#include <react/core/Props.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/ShadowNode.h>
+#include <react/events/EventEmitter.h>
 
 namespace facebook {
 namespace react {
@@ -31,7 +31,6 @@ struct ShadowNodeFragment {
   const SharedShadowNodeSharedList &children = nullSharedChildren();
   const SharedLocalData &localData = nullLocalData();
 
-private:
   static SharedProps &nullSharedProps();
   static SharedEventEmitter &nullSharedEventEmitter();
   static SharedShadowNodeSharedList &nullSharedChildren();
diff --git a/ReactCommon/fabric/core/tests/ComponentDescriptorTest.cpp b/ReactCommon/fabric/core/tests/ComponentDescriptorTest.cpp
index f341925aa05e9c..8dcd11fccfdfed 100644
--- a/ReactCommon/fabric/core/tests/ComponentDescriptorTest.cpp
+++ b/ReactCommon/fabric/core/tests/ComponentDescriptorTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,19 +12,26 @@
 using namespace facebook::react;
 
 TEST(ComponentDescriptorTest, createShadowNode) {
-  SharedComponentDescriptor descriptor = std::make_shared<TestComponentDescriptor>(nullptr);
+  SharedComponentDescriptor descriptor =
+      std::make_shared<TestComponentDescriptor>(nullptr);
 
   ASSERT_EQ(descriptor->getComponentHandle(), TestShadowNode::Handle());
-  ASSERT_STREQ(descriptor->getComponentName().c_str(), TestShadowNode::Name().c_str());
+  ASSERT_STREQ(
+      descriptor->getComponentName().c_str(), TestShadowNode::Name().c_str());
   ASSERT_STREQ(descriptor->getComponentName().c_str(), "Test");
 
   RawProps raw;
   raw["nativeID"] = "abc";
   SharedProps props = descriptor->cloneProps(nullptr, raw);
-  SharedShadowNode node = descriptor->createShadowNode(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = props, .eventEmitter = descriptor->createEventEmitter(0, 9)});
+  SharedShadowNode node = descriptor->createShadowNode(
+      ShadowNodeFragment{.tag = 9,
+                         .rootTag = 1,
+                         .props = props,
+                         .eventEmitter = descriptor->createEventEmitter(0, 9)});
 
   ASSERT_EQ(node->getComponentHandle(), TestShadowNode::Handle());
-  ASSERT_STREQ(node->getComponentName().c_str(), TestShadowNode::Name().c_str());
+  ASSERT_STREQ(
+      node->getComponentName().c_str(), TestShadowNode::Name().c_str());
   ASSERT_STREQ(node->getComponentName().c_str(), "Test");
   ASSERT_EQ(node->getTag(), 9);
   ASSERT_EQ(node->getRootTag(), 1);
@@ -32,12 +39,17 @@ TEST(ComponentDescriptorTest, createShadowNode) {
 }
 
 TEST(ComponentDescriptorTest, cloneShadowNode) {
-  SharedComponentDescriptor descriptor = std::make_shared<TestComponentDescriptor>(nullptr);
+  SharedComponentDescriptor descriptor =
+      std::make_shared<TestComponentDescriptor>(nullptr);
 
   RawProps raw;
   raw["nativeID"] = "abc";
   SharedProps props = descriptor->cloneProps(nullptr, raw);
-  SharedShadowNode node = descriptor->createShadowNode(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = props, .eventEmitter = descriptor->createEventEmitter(0, 9)});
+  SharedShadowNode node = descriptor->createShadowNode(
+      ShadowNodeFragment{.tag = 9,
+                         .rootTag = 1,
+                         .props = props,
+                         .eventEmitter = descriptor->createEventEmitter(0, 9)});
   SharedShadowNode cloned = descriptor->cloneShadowNode(*node, {});
 
   ASSERT_STREQ(cloned->getComponentName().c_str(), "Test");
@@ -47,14 +59,27 @@ TEST(ComponentDescriptorTest, cloneShadowNode) {
 }
 
 TEST(ComponentDescriptorTest, appendChild) {
-  SharedComponentDescriptor descriptor = std::make_shared<TestComponentDescriptor>(nullptr);
+  SharedComponentDescriptor descriptor =
+      std::make_shared<TestComponentDescriptor>(nullptr);
 
   RawProps raw;
   raw["nativeID"] = "abc";
   SharedProps props = descriptor->cloneProps(nullptr, raw);
-  SharedShadowNode node1 = descriptor->createShadowNode(ShadowNodeFragment {.tag = 1, .rootTag = 1, .props = props, .eventEmitter = descriptor->createEventEmitter(0, 1)});
-  SharedShadowNode node2 = descriptor->createShadowNode(ShadowNodeFragment {.tag = 2, .rootTag = 1, .props = props, .eventEmitter = descriptor->createEventEmitter(0, 2)});
-  SharedShadowNode node3 = descriptor->createShadowNode(ShadowNodeFragment {.tag = 3, .rootTag = 1, .props = props, .eventEmitter = descriptor->createEventEmitter(0, 3)});
+  SharedShadowNode node1 = descriptor->createShadowNode(
+      ShadowNodeFragment{.tag = 1,
+                         .rootTag = 1,
+                         .props = props,
+                         .eventEmitter = descriptor->createEventEmitter(0, 1)});
+  SharedShadowNode node2 = descriptor->createShadowNode(
+      ShadowNodeFragment{.tag = 2,
+                         .rootTag = 1,
+                         .props = props,
+                         .eventEmitter = descriptor->createEventEmitter(0, 2)});
+  SharedShadowNode node3 = descriptor->createShadowNode(
+      ShadowNodeFragment{.tag = 3,
+                         .rootTag = 1,
+                         .props = props,
+                         .eventEmitter = descriptor->createEventEmitter(0, 3)});
 
   descriptor->appendChild(node1, node2);
   descriptor->appendChild(node1, node3);
diff --git a/ReactCommon/fabric/core/tests/PrimitivesTest.cpp b/ReactCommon/fabric/core/tests/PrimitivesTest.cpp
index 99ecae6bfc2827..7c96796a889937 100644
--- a/ReactCommon/fabric/core/tests/PrimitivesTest.cpp
+++ b/ReactCommon/fabric/core/tests/PrimitivesTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #include <exception>
 
-#include <fabric/core/Sealable.h>
 #include <gtest/gtest.h>
+#include <react/core/Sealable.h>
 
 using namespace facebook::react;
 
@@ -30,7 +30,8 @@ TEST(SealableTest, handleAssignmentsCorrectly) {
   Sealable other2;
   EXPECT_THROW(obj = other2, std::runtime_error);
 
-  // It doesn't matter if the other object is also sealed, it's still not allowed.
+  // It doesn't matter if the other object is also sealed, it's still not
+  // allowed.
   other2.seal();
   EXPECT_THROW(obj = other2, std::runtime_error);
 
diff --git a/ReactCommon/fabric/core/tests/ShadowNodeTest.cpp b/ReactCommon/fabric/core/tests/ShadowNodeTest.cpp
index 386b334605ee31..cac7546d8202a3 100644
--- a/ReactCommon/fabric/core/tests/ShadowNodeTest.cpp
+++ b/ReactCommon/fabric/core/tests/ShadowNodeTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #include <memory>
 
-#include <fabric/core/ConcreteShadowNode.h>
-#include <fabric/core/ShadowNode.h>
 #include <gtest/gtest.h>
+#include <react/core/ConcreteShadowNode.h>
+#include <react/core/ShadowNode.h>
 
 #include "TestComponent.h"
 
@@ -29,14 +29,12 @@ TEST(ShadowNodeTest, handleProps) {
 
 TEST(ShadowNodeTest, handleShadowNodeCreation) {
   auto node = std::make_shared<TestShadowNode>(
-    ShadowNodeFragment {
-      .tag = 9,
-      .rootTag = 1,
-      .props = std::make_shared<const TestProps>(),
-      .children = ShadowNode::emptySharedShadowNodeSharedList()
-    },
-    nullptr
-  );
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
 
   ASSERT_FALSE(node->getSealed());
   ASSERT_STREQ(node->getComponentName().c_str(), "Test");
@@ -54,15 +52,13 @@ TEST(ShadowNodeTest, handleShadowNodeCreation) {
 
 TEST(ShadowNodeTest, handleShadowNodeSimpleCloning) {
   auto node = std::make_shared<TestShadowNode>(
-    ShadowNodeFragment {
-      .tag = 9,
-      .rootTag = 1,
-      .props = std::make_shared<const TestProps>(),
-      .children = ShadowNode::emptySharedShadowNodeSharedList()
-    },
-    nullptr
-  );
-  auto node2 = std::make_shared<TestShadowNode>(*node, ShadowNodeFragment {});
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto node2 = std::make_shared<TestShadowNode>(*node, ShadowNodeFragment{});
 
   ASSERT_STREQ(node->getComponentName().c_str(), "Test");
   ASSERT_EQ(node->getTag(), 9);
@@ -72,9 +68,27 @@ TEST(ShadowNodeTest, handleShadowNodeSimpleCloning) {
 
 TEST(ShadowNodeTest, handleShadowNodeMutation) {
   auto props = std::make_shared<const TestProps>();
-  auto node1 = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 1, .rootTag = 1, .props = std::make_shared<const TestProps>(), .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
-  auto node2 = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 2, .rootTag = 1, .props = std::make_shared<const TestProps>(), .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
-  auto node3 = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 3, .rootTag = 1, .props = std::make_shared<const TestProps>(), .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
+  auto node1 = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 1,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto node2 = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 2,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto node3 = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 3,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
 
   node1->appendChild(node2);
   node1->appendChild(node3);
@@ -83,7 +97,7 @@ TEST(ShadowNodeTest, handleShadowNodeMutation) {
   ASSERT_EQ(node1Children.at(0), node2);
   ASSERT_EQ(node1Children.at(1), node3);
 
-  auto node4 = std::make_shared<TestShadowNode>(*node2, ShadowNodeFragment {});
+  auto node4 = std::make_shared<TestShadowNode>(*node2, ShadowNodeFragment{});
   node1->replaceChild(node2, node4);
   node1Children = node1->getChildren();
   ASSERT_EQ(node1Children.size(), 2);
@@ -99,31 +113,32 @@ TEST(ShadowNodeTest, handleShadowNodeMutation) {
   // No more mutation after sealing.
   EXPECT_THROW(node4->setLocalData(nullptr), std::runtime_error);
 
-  auto node5 = std::make_shared<TestShadowNode>(*node4, ShadowNodeFragment {});
+  auto node5 = std::make_shared<TestShadowNode>(*node4, ShadowNodeFragment{});
   node5->setLocalData(nullptr);
   ASSERT_EQ(node5->getLocalData(), nullptr);
 }
 
 TEST(ShadowNodeTest, handleCloneFunction) {
-  auto firstNode = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = std::make_shared<const TestProps>(), .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
+  auto firstNode = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
 
   // The shadow node is not clonable if `cloneFunction` is not provided,
   ASSERT_DEATH_IF_SUPPORTED(firstNode->clone({}), "cloneFunction_");
 
   auto secondNode = std::make_shared<TestShadowNode>(
-    ShadowNodeFragment {
-      .tag = 9,
-      .rootTag = 1,
-      .props = std::make_shared<const TestProps>(),
-      .children = ShadowNode::emptySharedShadowNodeSharedList()
-    },
-    [](const ShadowNode &shadowNode, const ShadowNodeFragment &fragment) {
-      return std::make_shared<TestShadowNode>(
-        shadowNode,
-        fragment
-      );
-    }
-  );
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = std::make_shared<const TestProps>(),
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      [](const ShadowNode &shadowNode, const ShadowNodeFragment &fragment) {
+        return std::make_shared<TestShadowNode>(shadowNode, fragment);
+      });
 
   auto secondNodeClone = secondNode->clone({});
 
@@ -131,7 +146,9 @@ TEST(ShadowNodeTest, handleCloneFunction) {
   ASSERT_NE(secondNode, secondNodeClone);
 
   // `secondNodeClone` is an instance of `TestShadowNode`.
-  ASSERT_NE(std::dynamic_pointer_cast<const TestShadowNode>(secondNodeClone), nullptr);
+  ASSERT_NE(
+      std::dynamic_pointer_cast<const TestShadowNode>(secondNodeClone),
+      nullptr);
 
   // Both nodes have same content.
   ASSERT_EQ(secondNode->getTag(), secondNodeClone->getTag());
@@ -149,21 +166,114 @@ TEST(ShadowNodeTest, handleLocalData) {
   auto localDataOver9000 = std::make_shared<TestLocalData>();
   localDataOver9000->setNumber(9001);
   auto props = std::make_shared<const TestProps>();
-  auto firstNode = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = props, .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
-  auto secondNode = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = props, .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
-  auto thirdNode = std::make_shared<TestShadowNode>(ShadowNodeFragment {.tag = 9, .rootTag = 1, .props = props, .children = ShadowNode::emptySharedShadowNodeSharedList()}, nullptr);
+  auto firstNode = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto secondNode = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto thirdNode = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .tag = 9,
+          .rootTag = 1,
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
 
   firstNode->setLocalData(localData42);
   secondNode->setLocalData(localData42);
   thirdNode->setLocalData(localDataOver9000);
 
   // LocalData object are compared by pointer, not by value.
-  ASSERT_EQ(*firstNode, *secondNode);
-  ASSERT_NE(*firstNode, *thirdNode);
+  ASSERT_EQ(firstNode->getLocalData(), secondNode->getLocalData());
+  ASSERT_NE(firstNode->getLocalData(), thirdNode->getLocalData());
   secondNode->setLocalData(anotherLocalData42);
-  ASSERT_NE(*firstNode, *secondNode);
+  ASSERT_NE(firstNode->getLocalData(), secondNode->getLocalData());
 
   // LocalData cannot be changed for sealed shadow node.
   secondNode->sealRecursive();
   ASSERT_ANY_THROW(secondNode->setLocalData(localDataOver9000));
 }
+
+TEST(ShadowNodeTest, handleBacktracking) {
+  /*
+   * The structure:
+   * <A>
+   *  <AA/>
+   *  <AB>
+   *    <ABA/>
+   *    <ABB/>
+   *    <ABC/>
+   *  </AB>
+   *  <AC/>
+   * </A>
+   */
+
+  auto props = std::make_shared<const TestProps>();
+
+  auto nodeAA = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+
+  auto nodeABA = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto nodeABB = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+  auto nodeABC = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+
+  auto nodeABChildren = std::make_shared<std::vector<SharedShadowNode>>(
+      std::vector<SharedShadowNode>{nodeABA, nodeABB, nodeABC});
+  auto nodeAB = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{.props = props, .children = nodeABChildren}, nullptr);
+
+  auto nodeAC = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+
+  auto nodeAChildren = std::make_shared<std::vector<SharedShadowNode>>(
+      std::vector<SharedShadowNode>{nodeAA, nodeAB, nodeAC});
+  auto nodeA = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{.props = props, .children = nodeAChildren}, nullptr);
+
+  auto nodeZ = std::make_shared<TestShadowNode>(
+      ShadowNodeFragment{
+          .props = props,
+          .children = ShadowNode::emptySharedShadowNodeSharedList()},
+      nullptr);
+
+  std::vector<std::reference_wrapper<const ShadowNode>> ancestors = {};
+
+  // Negative case:
+  auto success = nodeZ->constructAncestorPath(*nodeA, ancestors);
+  ASSERT_FALSE(success);
+  ASSERT_EQ(ancestors.size(), 0);
+
+  // Positive case:
+  success = nodeABC->constructAncestorPath(*nodeA, ancestors);
+  ASSERT_TRUE(success);
+  ASSERT_EQ(ancestors.size(), 2);
+  ASSERT_EQ(&ancestors[0].get(), nodeAB.get());
+  ASSERT_EQ(&ancestors[1].get(), nodeA.get());
+}
diff --git a/ReactCommon/fabric/core/tests/TestComponent.h b/ReactCommon/fabric/core/tests/TestComponent.h
index 22c2c32e16f606..8296d63250e3e8 100644
--- a/ReactCommon/fabric/core/tests/TestComponent.h
+++ b/ReactCommon/fabric/core/tests/TestComponent.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,21 +9,21 @@
 
 #include <memory>
 
-#include <fabric/core/ConcreteComponentDescriptor.h>
-#include <fabric/core/ConcreteShadowNode.h>
-#include <fabric/core/LocalData.h>
-#include <fabric/core/ShadowNode.h>
 #include <folly/dynamic.h>
+#include <react/core/ConcreteComponentDescriptor.h>
+#include <react/core/ConcreteShadowNode.h>
+#include <react/core/LocalData.h>
+#include <react/core/ShadowNode.h>
 
 using namespace facebook::react;
 
 /**
- * This defines a set of TestComponent classes: Props, ShadowNode, ComponentDescriptor.
- * To be used for testing purpose.
+ * This defines a set of TestComponent classes: Props, ShadowNode,
+ * ComponentDescriptor. To be used for testing purpose.
  */
 
-class TestLocalData: public LocalData {
-public:
+class TestLocalData : public LocalData {
+ public:
   void setNumber(const int &number) {
     number_ = number;
   }
@@ -32,28 +32,28 @@ class TestLocalData: public LocalData {
     return number_;
   }
 
-private:
-  int number_ {0};
+ private:
+  int number_{0};
 };
 
 static const char TestComponentName[] = "Test";
 
 class TestProps : public Props {
-public:
+ public:
   using Props::Props;
-  TestProps():
-    Props(Props(), {{"nativeID", "testNativeID"}}) {}
+  TestProps() : Props(Props(), {{"nativeID", "testNativeID"}}) {}
 };
 using SharedTestProps = std::shared_ptr<const TestProps>;
 
 class TestShadowNode;
 using SharedTestShadowNode = std::shared_ptr<const TestShadowNode>;
 class TestShadowNode : public ConcreteShadowNode<TestComponentName, TestProps> {
-public:
+ public:
   using ConcreteShadowNode::ConcreteShadowNode;
 };
 
-class TestComponentDescriptor: public ConcreteComponentDescriptor<TestShadowNode> {
-public:
+class TestComponentDescriptor
+    : public ConcreteComponentDescriptor<TestShadowNode> {
+ public:
   using ConcreteComponentDescriptor::ConcreteComponentDescriptor;
 };
diff --git a/ReactCommon/fabric/debug/BUCK b/ReactCommon/fabric/debug/BUCK
index c17aa3d4a456cd..8c2dbe3eaed1ff 100644
--- a/ReactCommon/fabric/debug/BUCK
+++ b/ReactCommon/fabric/debug/BUCK
@@ -1,17 +1,14 @@
 load(
-    "//configurations/buck/apple:flag_defs.bzl",
-    "OBJC_ARC_PREPROCESSOR_FLAGS",
-    "get_application_ios_flags",
+    "@fbsource//tools/build_defs/apple:flag_defs.bzl",
     "get_debug_preprocessor_flags",
 )
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
     "get_apple_inspector_flags",
-    "react_native_xplat_target",
     "rn_xplat_cxx_library",
     "subdir_glob",
 )
@@ -33,7 +30,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/debug",
+        prefix = "react/debug",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -74,7 +71,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/debug/DebugStringConvertible.cpp b/ReactCommon/fabric/debug/DebugStringConvertible.cpp
index 08d885d9674687..20c182c483369d 100644
--- a/ReactCommon/fabric/debug/DebugStringConvertible.cpp
+++ b/ReactCommon/fabric/debug/DebugStringConvertible.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,11 @@
 namespace facebook {
 namespace react {
 
-std::string DebugStringConvertible::getDebugChildrenDescription(DebugStringConvertibleOptions options, int depth) const {
+#if RN_DEBUG_STRING_CONVERTIBLE
+
+std::string DebugStringConvertible::getDebugChildrenDescription(
+    DebugStringConvertibleOptions options,
+    int depth) const {
   if (depth >= options.maximumDepth) {
     return "";
   }
@@ -28,7 +32,9 @@ std::string DebugStringConvertible::getDebugChildrenDescription(DebugStringConve
   return childrenString;
 }
 
-std::string DebugStringConvertible::getDebugPropsDescription(DebugStringConvertibleOptions options, int depth) const {
+std::string DebugStringConvertible::getDebugPropsDescription(
+    DebugStringConvertibleOptions options,
+    int depth) const {
   if (depth >= options.maximumDepth) {
     return "";
   }
@@ -43,8 +49,10 @@ std::string DebugStringConvertible::getDebugPropsDescription(DebugStringConverti
     auto name = prop->getDebugName();
     auto value = prop->getDebugValue();
     auto children = prop->getDebugPropsDescription(options, depth + 1);
-    auto valueAndChildren = value + (children.empty() ? "" : "(" + children + ")");
-    propsString += " " + name + (valueAndChildren.empty() ? "" : "=" + valueAndChildren);
+    auto valueAndChildren =
+        value + (children.empty() ? "" : "(" + children + ")");
+    propsString +=
+        " " + name + (valueAndChildren.empty() ? "" : "=" + valueAndChildren);
   }
 
   if (!propsString.empty()) {
@@ -55,19 +63,23 @@ std::string DebugStringConvertible::getDebugPropsDescription(DebugStringConverti
   return propsString;
 }
 
-std::string DebugStringConvertible::getDebugDescription(DebugStringConvertibleOptions options, int depth) const {
-  std::string nameString = getDebugName();
-  std::string valueString = getDebugValue();
-  std::string childrenString = getDebugChildrenDescription(options, depth);
-  std::string propsString = getDebugPropsDescription(options, depth);
+std::string DebugStringConvertible::getDebugDescription(
+    DebugStringConvertibleOptions options,
+    int depth) const {
+  auto nameString = getDebugName();
+  auto valueString = getDebugValue();
+  auto childrenString = getDebugChildrenDescription(options, depth);
+  auto propsString = getDebugPropsDescription(options, depth);
 
-  std::string leading = options.format ? std::string(depth * 2, ' ') : "";
-  std::string trailing = options.format ? "\n" : "";
+  auto leading = options.format ? std::string(depth * 2, ' ') : std::string{""};
+  auto trailing = options.format ? std::string{"\n"} : std::string{""};
 
   return leading + "<" + nameString +
-    (valueString.empty() ? "" : "=" + valueString) +
-    (propsString.empty() ? "" : " " + propsString) +
-    (childrenString.empty() ? "/>" + trailing : ">" + trailing + childrenString + leading + "</" + nameString + ">" + trailing);
+      (valueString.empty() ? "" : "=" + valueString) +
+      (propsString.empty() ? "" : " " + propsString) +
+      (childrenString.empty() ? "/>" + trailing
+                              : ">" + trailing + childrenString + leading +
+               "</" + nameString + ">" + trailing);
 }
 
 std::string DebugStringConvertible::getDebugName() const {
@@ -78,7 +90,8 @@ std::string DebugStringConvertible::getDebugValue() const {
   return "";
 }
 
-SharedDebugStringConvertibleList DebugStringConvertible::getDebugChildren() const {
+SharedDebugStringConvertibleList DebugStringConvertible::getDebugChildren()
+    const {
   return SharedDebugStringConvertibleList();
 }
 
@@ -86,5 +99,7 @@ SharedDebugStringConvertibleList DebugStringConvertible::getDebugProps() const {
   return SharedDebugStringConvertibleList();
 }
 
+#endif
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/debug/DebugStringConvertible.h b/ReactCommon/fabric/debug/DebugStringConvertible.h
index d911072987a721..2c38093f1772fb 100644
--- a/ReactCommon/fabric/debug/DebugStringConvertible.h
+++ b/ReactCommon/fabric/debug/DebugStringConvertible.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,31 +7,38 @@
 
 #pragma once
 
-#include <string>
+#include <climits>
 #include <memory>
+#include <string>
 #include <vector>
 
 namespace facebook {
 namespace react {
 
+#ifndef NDEBUG
+#define RN_DEBUG_STRING_CONVERTIBLE 1
+#endif
+
+#if RN_DEBUG_STRING_CONVERTIBLE
+
 class DebugStringConvertible;
 
-using SharedDebugStringConvertible = std::shared_ptr<const DebugStringConvertible>;
-using SharedDebugStringConvertibleList = std::vector<SharedDebugStringConvertible>;
+using SharedDebugStringConvertible =
+    std::shared_ptr<const DebugStringConvertible>;
+using SharedDebugStringConvertibleList =
+    std::vector<SharedDebugStringConvertible>;
 
 struct DebugStringConvertibleOptions {
-  bool format {true};
-  int maximumDepth {INT_MAX};
+  bool format{true};
+  int maximumDepth{INT_MAX};
 };
 
 // Abstract class describes conformance to DebugStringConvertible concept
 // and implements basic recursive debug string assembly algorithm.
 // Use this as a base class for providing a debugging textual representation
 // of your class.
-// TODO (#26770211): Clear up the naming.
 class DebugStringConvertible {
-
-public:
+ public:
   virtual ~DebugStringConvertible() = default;
 
   // Returns a name of the object.
@@ -55,13 +62,25 @@ class DebugStringConvertible {
   // Returns a string which represents the object in a human-readable way.
   // Default implementation returns a description of the subtree
   // rooted at this node, represented in XML-like format.
-  virtual std::string getDebugDescription(DebugStringConvertibleOptions options = {}, int depth = 0) const;
+  virtual std::string getDebugDescription(
+      DebugStringConvertibleOptions options = {},
+      int depth = 0) const;
 
   // Do same as `getDebugDescription` but return only *children* and
   // *properties* parts (which are used in `getDebugDescription`).
-  virtual std::string getDebugPropsDescription(DebugStringConvertibleOptions options = {}, int depth = 0) const;
-  virtual std::string getDebugChildrenDescription(DebugStringConvertibleOptions options = {}, int depth = 0) const;
+  virtual std::string getDebugPropsDescription(
+      DebugStringConvertibleOptions options = {},
+      int depth = 0) const;
+  virtual std::string getDebugChildrenDescription(
+      DebugStringConvertibleOptions options = {},
+      int depth = 0) const;
 };
 
+#else
+
+class DebugStringConvertible {};
+
+#endif
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/debug/DebugStringConvertibleItem.cpp b/ReactCommon/fabric/debug/DebugStringConvertibleItem.cpp
index 8baffb5b75d5a2..93961d06110d01 100644
--- a/ReactCommon/fabric/debug/DebugStringConvertibleItem.cpp
+++ b/ReactCommon/fabric/debug/DebugStringConvertibleItem.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,16 +10,14 @@
 namespace facebook {
 namespace react {
 
+#if RN_DEBUG_STRING_CONVERTIBLE
+
 DebugStringConvertibleItem::DebugStringConvertibleItem(
-  const std::string &name,
-  const std::string &value,
-  const SharedDebugStringConvertibleList &props,
-  const SharedDebugStringConvertibleList &children
-):
-  name_(name),
-  value_(value),
-  props_(props),
-  children_(children) {}
+    const std::string &name,
+    const std::string &value,
+    const SharedDebugStringConvertibleList &props,
+    const SharedDebugStringConvertibleList &children)
+    : name_(name), value_(value), props_(props), children_(children) {}
 
 std::string DebugStringConvertibleItem::getDebugName() const {
   return name_;
@@ -29,13 +27,17 @@ std::string DebugStringConvertibleItem::getDebugValue() const {
   return value_;
 }
 
-SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugProps() const {
+SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugProps()
+    const {
   return props_;
 }
 
-SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugChildren() const {
+SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugChildren()
+    const {
   return children_;
 }
 
+#endif
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/debug/DebugStringConvertibleItem.h b/ReactCommon/fabric/debug/DebugStringConvertibleItem.h
index e0499cff0502ad..f4b60fae17625f 100644
--- a/ReactCommon/fabric/debug/DebugStringConvertibleItem.h
+++ b/ReactCommon/fabric/debug/DebugStringConvertibleItem.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,39 +9,40 @@
 
 #include <string>
 
-#include <fabric/debug/DebugStringConvertible.h>
+#include <react/debug/DebugStringConvertible.h>
 
 namespace facebook {
 namespace react {
 
+#if RN_DEBUG_STRING_CONVERTIBLE
+
 // Trivial implementation of `DebugStringConvertible` abstract class
 // with a stored output; useful for assembling `DebugStringConvertible` values
 // in custom implementations of `getDebugChildren` and `getDebugProps`.
-class DebugStringConvertibleItem:
-  public DebugStringConvertible {
-
-public:
+class DebugStringConvertibleItem : public DebugStringConvertible {
+ public:
   DebugStringConvertibleItem() = default;
   DebugStringConvertibleItem(const DebugStringConvertibleItem &item) = default;
 
   DebugStringConvertibleItem(
-    const std::string &name = "",
-    const std::string &value = "",
-    const SharedDebugStringConvertibleList &props = {},
-    const SharedDebugStringConvertibleList &children = {}
-  );
+      const std::string &name = "",
+      const std::string &value = "",
+      const SharedDebugStringConvertibleList &props = {},
+      const SharedDebugStringConvertibleList &children = {});
 
   std::string getDebugName() const override;
   std::string getDebugValue() const override;
   SharedDebugStringConvertibleList getDebugChildren() const override;
   SharedDebugStringConvertibleList getDebugProps() const override;
 
-private:
+ private:
   std::string name_;
   std::string value_;
   SharedDebugStringConvertibleList props_;
   SharedDebugStringConvertibleList children_;
 };
 
+#endif
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/debug/SystraceSection.h b/ReactCommon/fabric/debug/SystraceSection.h
new file mode 100644
index 00000000000000..e7339c0943668b
--- /dev/null
+++ b/ReactCommon/fabric/debug/SystraceSection.h
@@ -0,0 +1,49 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#pragma once
+
+#ifdef WITH_FBSYSTRACE
+#include <fbsystrace.h>
+#endif
+
+namespace facebook {
+namespace react {
+
+/**
+ * This is a convenience class to avoid lots of verbose profiling
+ * #ifdefs.  If WITH_FBSYSTRACE is not defined, the optimizer will
+ * remove this completely.  If it is defined, it will behave as
+ * FbSystraceSection, with the right tag provided. Use two separate classes to
+ * to ensure that the ODR rule isn't violated, that is, if WITH_FBSYSTRACE has
+ * different values in different files, there is no inconsistency in the sizes
+ * of defined symbols.
+ */
+#ifdef WITH_FBSYSTRACE
+struct ConcreteSystraceSection {
+ public:
+  template <typename... ConvertsToStringPiece>
+  explicit ConcreteSystraceSection(
+      const char *name,
+      ConvertsToStringPiece &&... args)
+      : m_section(TRACE_TAG_REACT_CXX_BRIDGE, name, args...) {}
+
+ private:
+  fbsystrace::FbSystraceSection m_section;
+};
+using SystraceSection = ConcreteSystraceSection;
+#else
+struct DummySystraceSection {
+ public:
+  template <typename... ConvertsToStringPiece>
+  explicit DummySystraceSection(
+      const char *name,
+      ConvertsToStringPiece &&... args) {}
+};
+using SystraceSection = DummySystraceSection;
+#endif
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/debug/debugStringConvertibleUtils.h b/ReactCommon/fabric/debug/debugStringConvertibleUtils.h
index f0a26d0590ce16..51bf698b4be0b9 100644
--- a/ReactCommon/fabric/debug/debugStringConvertibleUtils.h
+++ b/ReactCommon/fabric/debug/debugStringConvertibleUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,27 +7,40 @@
 
 #pragma once
 
-#include <string>
 #include <limits>
 #include <memory>
+#include <string>
 #include <vector>
 
-#include <fabric/debug/DebugStringConvertible.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
 #include <folly/Conv.h>
 #include <folly/Optional.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 
 namespace facebook {
 namespace react {
 
-inline std::string toString(const std::string &value) { return value; }
-inline std::string toString(const int &value) { return folly::to<std::string>(value); }
-inline std::string toString(const bool &value) { return folly::to<std::string>(value); }
-inline std::string toString(const float &value) { return folly::to<std::string>(value); }
-inline std::string toString(const double &value) { return folly::to<std::string>(value); }
+#if RN_DEBUG_STRING_CONVERTIBLE
+
+inline std::string toString(const std::string &value) {
+  return value;
+}
+inline std::string toString(const int &value) {
+  return folly::to<std::string>(value);
+}
+inline std::string toString(const bool &value) {
+  return folly::to<std::string>(value);
+}
+inline std::string toString(const float &value) {
+  return folly::to<std::string>(value);
+}
+inline std::string toString(const double &value) {
+  return folly::to<std::string>(value);
+}
 
 template <typename T>
-inline SharedDebugStringConvertible debugStringConvertibleItem(std::string name, T value, T defaultValue = {}) {
+inline SharedDebugStringConvertible
+debugStringConvertibleItem(std::string name, T value, T defaultValue = {}) {
   if (value == defaultValue) {
     return nullptr;
   }
@@ -36,24 +49,36 @@ inline SharedDebugStringConvertible debugStringConvertibleItem(std::string name,
 }
 
 template <typename T>
-inline SharedDebugStringConvertible debugStringConvertibleItem(std::string name, folly::Optional<T> value, T defaultValue = {}) {
+inline SharedDebugStringConvertible debugStringConvertibleItem(
+    std::string name,
+    folly::Optional<T> value,
+    T defaultValue = {}) {
   if (!value.hasValue()) {
     return nullptr;
   }
 
-  return debugStringConvertibleItem(name, value.value_or(defaultValue), defaultValue);
+  return debugStringConvertibleItem(
+      name, value.value_or(defaultValue), defaultValue);
 }
 
-inline SharedDebugStringConvertibleList operator+(const SharedDebugStringConvertibleList &lhs, const SharedDebugStringConvertibleList &rhs) {
-  SharedDebugStringConvertibleList result = {};
+inline SharedDebugStringConvertibleList operator+(
+    const SharedDebugStringConvertibleList &lhs,
+    const SharedDebugStringConvertibleList &rhs) {
+  auto result = SharedDebugStringConvertibleList{};
   std::move(lhs.begin(), lhs.end(), std::back_inserter(result));
   std::move(rhs.begin(), rhs.end(), std::back_inserter(result));
   return result;
 }
 
-inline SharedDebugStringConvertible debugStringConvertibleItem(std::string name, DebugStringConvertible value, std::string defaultValue) {
-  return debugStringConvertibleItem(name, value.getDebugDescription(), defaultValue);
+inline SharedDebugStringConvertible debugStringConvertibleItem(
+    std::string name,
+    DebugStringConvertible value,
+    std::string defaultValue) {
+  return debugStringConvertibleItem(
+      name, value.getDebugDescription(), defaultValue);
 }
 
+#endif
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/debug/tests/DebugStringConvertibleTest.cpp b/ReactCommon/fabric/debug/tests/DebugStringConvertibleTest.cpp
index 272255b39eb776..99a1e43a365113 100644
--- a/ReactCommon/fabric/debug/tests/DebugStringConvertibleTest.cpp
+++ b/ReactCommon/fabric/debug/tests/DebugStringConvertibleTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,14 +7,15 @@
 
 #include <memory>
 
-#include <fabric/debug/DebugStringConvertibleItem.h>
 #include <gtest/gtest.h>
+#include <react/debug/DebugStringConvertibleItem.h>
 
 using namespace facebook::react;
 
 TEST(DebugStringConvertibleTest, handleSimpleNode) {
   SharedDebugStringConvertibleList empty;
-  auto item = std::make_shared<DebugStringConvertibleItem>("View", "hello", empty, empty);
+  auto item = std::make_shared<DebugStringConvertibleItem>(
+      "View", "hello", empty, empty);
 
   ASSERT_STREQ(item->getDebugName().c_str(), "View");
   ASSERT_STREQ(item->getDebugValue().c_str(), "hello");
@@ -24,9 +25,9 @@ TEST(DebugStringConvertibleTest, handleSimpleNode) {
 TEST(DebugStringConvertibleTest, handleSimpleNodeWithProps) {
   SharedDebugStringConvertibleList empty;
   SharedDebugStringConvertibleList props = {
-    std::make_shared<DebugStringConvertibleItem>("x", "1", empty, empty)
-  };
-  auto item = std::make_shared<DebugStringConvertibleItem>("View", "hello", props, empty);
+      std::make_shared<DebugStringConvertibleItem>("x", "1", empty, empty)};
+  auto item = std::make_shared<DebugStringConvertibleItem>(
+      "View", "hello", props, empty);
 
   ASSERT_STREQ(item->getDebugName().c_str(), "View");
   ASSERT_STREQ(item->getDebugValue().c_str(), "hello");
@@ -36,42 +37,48 @@ TEST(DebugStringConvertibleTest, handleSimpleNodeWithProps) {
 TEST(DebugStringConvertibleTest, handleSimpleNodeWithChildren) {
   SharedDebugStringConvertibleList empty;
   SharedDebugStringConvertibleList children = {
-    std::make_shared<DebugStringConvertibleItem>("Child", "a", empty, empty)
-  };
-  auto item = std::make_shared<DebugStringConvertibleItem>("View", "hello", empty, children);
+      std::make_shared<DebugStringConvertibleItem>("Child", "a", empty, empty)};
+  auto item = std::make_shared<DebugStringConvertibleItem>(
+      "View", "hello", empty, children);
 
   ASSERT_STREQ(item->getDebugName().c_str(), "View");
   ASSERT_STREQ(item->getDebugValue().c_str(), "hello");
-  ASSERT_STREQ(item->getDebugDescription().c_str(), "<View=hello>\n  <Child=a/>\n</View>\n");
+  ASSERT_STREQ(
+      item->getDebugDescription().c_str(),
+      "<View=hello>\n  <Child=a/>\n</View>\n");
 }
 
 TEST(DebugStringConvertibleTest, handleNestedNode) {
   SharedDebugStringConvertibleList empty;
   SharedDebugStringConvertibleList props = {
-    std::make_shared<DebugStringConvertibleItem>("x", "1", empty, empty)
-  };
+      std::make_shared<DebugStringConvertibleItem>("x", "1", empty, empty)};
   SharedDebugStringConvertibleList children = {
-    std::make_shared<DebugStringConvertibleItem>("Child", "a", props, empty)
-  };
-  auto item = std::make_shared<DebugStringConvertibleItem>("View", "hello", props, children);
+      std::make_shared<DebugStringConvertibleItem>("Child", "a", props, empty)};
+  auto item = std::make_shared<DebugStringConvertibleItem>(
+      "View", "hello", props, children);
 
   ASSERT_STREQ(item->getDebugName().c_str(), "View");
   ASSERT_STREQ(item->getDebugValue().c_str(), "hello");
-  ASSERT_STREQ(item->getDebugDescription().c_str(), "<View=hello x=1>\n  <Child=a x=1/>\n</View>\n");
+  ASSERT_STREQ(
+      item->getDebugDescription().c_str(),
+      "<View=hello x=1>\n  <Child=a x=1/>\n</View>\n");
 }
 
 TEST(DebugStringConvertibleTest, handleNodeWithComplexProps) {
   SharedDebugStringConvertibleList empty;
   SharedDebugStringConvertibleList subProps = {
-    std::make_shared<DebugStringConvertibleItem>("height", "100", empty, empty),
-    std::make_shared<DebugStringConvertibleItem>("width", "200", empty, empty)
-  };
+      std::make_shared<DebugStringConvertibleItem>(
+          "height", "100", empty, empty),
+      std::make_shared<DebugStringConvertibleItem>(
+          "width", "200", empty, empty)};
   SharedDebugStringConvertibleList props = {
-    std::make_shared<DebugStringConvertibleItem>("x", "1", subProps, empty)
-  };
-  auto item = std::make_shared<DebugStringConvertibleItem>("View", "hello", props, empty);
+      std::make_shared<DebugStringConvertibleItem>("x", "1", subProps, empty)};
+  auto item = std::make_shared<DebugStringConvertibleItem>(
+      "View", "hello", props, empty);
 
   ASSERT_STREQ(item->getDebugName().c_str(), "View");
   ASSERT_STREQ(item->getDebugValue().c_str(), "hello");
-  ASSERT_STREQ(item->getDebugDescription().c_str(), "<View=hello x=1(height=100 width=200)/>\n");
+  ASSERT_STREQ(
+      item->getDebugDescription().c_str(),
+      "<View=hello x=1(height=100 width=200)/>\n");
 }
diff --git a/ReactCommon/fabric/events/BUCK b/ReactCommon/fabric/events/BUCK
index 1f1908cc761393..9823eb1e3e2bb3 100644
--- a/ReactCommon/fabric/events/BUCK
+++ b/ReactCommon/fabric/events/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -28,7 +28,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/events",
+        prefix = "react/events",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -55,6 +55,7 @@ rn_xplat_cxx_library(
         "xplat//folly:headers_only",
         "xplat//folly:memory",
         "xplat//folly:molly",
+        "xplat//jsi:jsi",
         "xplat//third-party/glog:glog",
         react_native_xplat_target("fabric/debug:debug"),
     ],
@@ -71,7 +72,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/events/BatchedEventQueue.cpp b/ReactCommon/fabric/events/BatchedEventQueue.cpp
new file mode 100644
index 00000000000000..415958e70e00f8
--- /dev/null
+++ b/ReactCommon/fabric/events/BatchedEventQueue.cpp
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "BatchedEventQueue.h"
+
+namespace facebook {
+namespace react {
+
+void BatchedEventQueue::enqueueEvent(const RawEvent &rawEvent) const {
+  EventQueue::enqueueEvent(rawEvent);
+  eventBeat_->request();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/BatchedEventQueue.h b/ReactCommon/fabric/events/BatchedEventQueue.h
new file mode 100644
index 00000000000000..c73490a52c4c92
--- /dev/null
+++ b/ReactCommon/fabric/events/BatchedEventQueue.h
@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <react/events/EventQueue.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event Queue that dispatches event in batches synchronizing them with
+ * an Event Beat.
+ */
+class BatchedEventQueue final : public EventQueue {
+ public:
+  using EventQueue::EventQueue;
+
+  void enqueueEvent(const RawEvent &rawEvent) const override;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventBeat.cpp b/ReactCommon/fabric/events/EventBeat.cpp
new file mode 100644
index 00000000000000..2ce95b4d3284a7
--- /dev/null
+++ b/ReactCommon/fabric/events/EventBeat.cpp
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "EventBeat.h"
+
+namespace facebook {
+namespace react {
+
+void EventBeat::request() const {
+  isRequested_ = true;
+}
+
+void EventBeat::beat(jsi::Runtime &runtime) const {
+  if (!this->isRequested_) {
+    return;
+  }
+
+  isRequested_ = false;
+
+  if (beatCallback_) {
+    beatCallback_(runtime);
+  }
+}
+
+void EventBeat::induce() const {
+  // Default implementation does nothing.
+}
+
+void EventBeat::setBeatCallback(const BeatCallback &beatCallback) {
+  beatCallback_ = beatCallback;
+}
+
+void EventBeat::setFailCallback(const FailCallback &failCallback) {
+  failCallback_ = failCallback;
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventBeat.h b/ReactCommon/fabric/events/EventBeat.h
new file mode 100644
index 00000000000000..448da6dee2a02c
--- /dev/null
+++ b/ReactCommon/fabric/events/EventBeat.h
@@ -0,0 +1,76 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <jsi/jsi.h>
+#include <atomic>
+#include <functional>
+#include <memory>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event Beat serves two interleaving purposes: synchronization of event queues
+ * and ensuring that event dispatching happens on propper threads.
+ */
+class EventBeat {
+ public:
+  virtual ~EventBeat() = default;
+
+  using BeatCallback = std::function<void(jsi::Runtime &runtime)>;
+  using FailCallback = std::function<void()>;
+
+  /*
+   * Communicates to the Beat that a consumer is waiting for the coming beat.
+   * A consumer must request coming beat after the previous beat happened
+   * to receive a next coming one.
+   */
+  virtual void request() const;
+
+  /*
+   * Induces the next beat to happen as soon as possible. If the method
+   * is called on the proper thread, the beat must happen synchronously.
+   * Subclasses might override this method to implement specific
+   * out-of-turn beat scheduling.
+   * Some types of Event Beats do not support inducing, hence the default
+   * implementation does nothing.
+   * Receiver might ignore the call if a beat was not requested.
+   */
+  virtual void induce() const;
+
+  /*
+   * Sets the beat callback function.
+   * The callback is must be called on the proper thread.
+   */
+  void setBeatCallback(const BeatCallback &beatCallback);
+
+  /*
+   * Sets the fail callback function.
+   * Called in case if the beat cannot be performed anymore because of
+   * some external circumstances (e.g. execution thread is beling destructed).
+   * The callback can be called on any thread.
+   */
+  void setFailCallback(const FailCallback &failCallback);
+
+  /*
+   * Should be used by sublasses to send a beat.
+   * Receiver might ignore the call if a beat was not requested.
+   */
+  void beat(jsi::Runtime &runtime) const;
+
+ protected:
+  BeatCallback beatCallback_;
+  FailCallback failCallback_;
+  mutable std::atomic<bool> isRequested_{false};
+};
+
+using EventBeatFactory = std::function<std::unique_ptr<EventBeat>()>;
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventBeatBasedExecutor.cpp b/ReactCommon/fabric/events/EventBeatBasedExecutor.cpp
new file mode 100644
index 00000000000000..2f09d0bb5902e3
--- /dev/null
+++ b/ReactCommon/fabric/events/EventBeatBasedExecutor.cpp
@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <cassert>
+
+#include "EventBeatBasedExecutor.h"
+
+#include <cassert>
+
+namespace facebook {
+namespace react {
+
+using Mode = EventBeatBasedExecutor::Mode;
+
+EventBeatBasedExecutor::EventBeatBasedExecutor(
+    std::unique_ptr<EventBeat> eventBeat)
+    : eventBeat_(std::move(eventBeat)) {
+  eventBeat_->setBeatCallback(
+      std::bind(&EventBeatBasedExecutor::onBeat, this, true));
+  eventBeat_->setFailCallback(
+      std::bind(&EventBeatBasedExecutor::onBeat, this, false));
+}
+
+void EventBeatBasedExecutor::operator()(Routine routine, Mode mode) const {
+  if (mode == Mode::Asynchronous) {
+    execute({.routine = std::move(routine)});
+    return;
+  }
+
+  std::mutex mutex;
+  mutex.lock();
+
+  execute({.routine = std::move(routine),
+           .callback = [&mutex]() { mutex.unlock(); }});
+
+  mutex.lock();
+}
+
+void EventBeatBasedExecutor::execute(Task task) const {
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    tasks_.push_back(std::move(task));
+  }
+
+  eventBeat_->request();
+  eventBeat_->induce();
+}
+
+void EventBeatBasedExecutor::onBeat(bool success) const {
+  std::vector<Task> tasks;
+
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    if (tasks_.size() == 0) {
+      return;
+    }
+
+    tasks = std::move(tasks_);
+    tasks_.clear();
+  }
+
+  for (const auto task : tasks) {
+    if (success) {
+      task.routine();
+    }
+
+    if (task.callback) {
+      task.callback();
+    }
+  }
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventBeatBasedExecutor.h b/ReactCommon/fabric/events/EventBeatBasedExecutor.h
new file mode 100644
index 00000000000000..7ef5a2d74ceec7
--- /dev/null
+++ b/ReactCommon/fabric/events/EventBeatBasedExecutor.h
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <memory>
+#include <mutex>
+#include <vector>
+
+#include <react/events/EventBeat.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * General purpose executor that uses EventBeat to ensure proper threading.
+ */
+class EventBeatBasedExecutor {
+ public:
+  using Routine = std::function<void()>;
+  using Callback = std::function<void()>;
+
+  struct Task {
+    Routine routine;
+    Callback callback;
+  };
+
+  enum class Mode { Synchronous, Asynchronous };
+
+  EventBeatBasedExecutor(std::unique_ptr<EventBeat> eventBeat);
+
+  /*
+   * Executes given routine with given mode.
+   */
+  void operator()(Routine routine, Mode mode = Mode::Asynchronous) const;
+
+ private:
+  void onBeat(bool success = true) const;
+  void execute(Task task) const;
+
+  std::unique_ptr<EventBeat> eventBeat_;
+  mutable std::vector<Task> tasks_; // Protected by `mutex_`.
+  mutable std::mutex mutex_;
+};
+
+using EventBeatFactory = std::function<std::unique_ptr<EventBeat>()>;
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventDispatcher.cpp b/ReactCommon/fabric/events/EventDispatcher.cpp
new file mode 100644
index 00000000000000..737b8a7a91d289
--- /dev/null
+++ b/ReactCommon/fabric/events/EventDispatcher.cpp
@@ -0,0 +1,62 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "EventDispatcher.h"
+
+#include "BatchedEventQueue.h"
+#include "UnbatchedEventQueue.h"
+
+#define REACT_FABRIC_SYNC_EVENT_DISPATCHING_DISABLED
+
+namespace facebook {
+namespace react {
+
+EventDispatcher::EventDispatcher(
+    const EventPipe &eventPipe,
+    const EventBeatFactory &synchonousEventBeatFactory,
+    const EventBeatFactory &asynchonousEventBeatFactory) {
+  // Synchronous/Unbatched
+  eventQueues_[(int)EventPriority::SynchronousUnbatched] =
+      std::make_unique<UnbatchedEventQueue>(
+          eventPipe, synchonousEventBeatFactory());
+
+  // Synchronous/Batched
+  eventQueues_[(int)EventPriority::SynchronousBatched] =
+      std::make_unique<BatchedEventQueue>(
+          eventPipe, synchonousEventBeatFactory());
+
+  // Asynchronous/Unbatched
+  eventQueues_[(int)EventPriority::AsynchronousUnbatched] =
+      std::make_unique<UnbatchedEventQueue>(
+          eventPipe, asynchonousEventBeatFactory());
+
+  // Asynchronous/Batched
+  eventQueues_[(int)EventPriority::AsynchronousBatched] =
+      std::make_unique<BatchedEventQueue>(
+          eventPipe, asynchonousEventBeatFactory());
+}
+
+void EventDispatcher::dispatchEvent(
+    const RawEvent &rawEvent,
+    EventPriority priority) const {
+#ifdef REACT_FABRIC_SYNC_EVENT_DISPATCHING_DISABLED
+  // Synchronous dispatch works, but JavaScript interop layer does not have
+  // proper synchonization yet and it crashes.
+  if (priority == EventPriority::SynchronousUnbatched) {
+    priority = EventPriority::AsynchronousUnbatched;
+  }
+
+  if (priority == EventPriority::SynchronousBatched) {
+    priority = EventPriority::AsynchronousBatched;
+  }
+#endif
+
+  eventQueues_[(int)priority]->enqueueEvent(rawEvent);
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventDispatcher.h b/ReactCommon/fabric/events/EventDispatcher.h
index d317e65a49fc74..897376b1e15ada 100644
--- a/ReactCommon/fabric/events/EventDispatcher.h
+++ b/ReactCommon/fabric/events/EventDispatcher.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,37 +8,36 @@
 
 #include <memory>
 
-#include <fabric/events/primitives.h>
-#include <folly/dynamic.h>
+#include <react/events/EventBeat.h>
+#include <react/events/EventQueue.h>
+#include <react/events/RawEvent.h>
+#include <react/events/primitives.h>
 
 namespace facebook {
 namespace react {
 
 class EventDispatcher;
-
 using SharedEventDispatcher = std::shared_ptr<const EventDispatcher>;
+using WeakEventDispatcher = std::weak_ptr<const EventDispatcher>;
 
 /*
- * Abstract class that represent event-delivery infrastructure.
- * Particular `EventEmitter` clases use an object of this class to invoke
- * events.
+ * Represents event-delivery infrastructure.
+ * Particular `EventEmitter` clases use this for sending events.
  */
 class EventDispatcher {
-
-public:
+ public:
+  EventDispatcher(
+      const EventPipe &eventPipe,
+      const EventBeatFactory &synchonousEventBeatFactory,
+      const EventBeatFactory &asynchonousEventBeatFactory);
 
   /*
-   * Dispatches "raw" event using some event-delivery infrastructure.
+   * Dispatches a raw event with given priority using event-delivery pipe.
    */
-  virtual void dispatchEvent(
-    const EventTarget &eventTarget,
-    const std::string &type,
-    const folly::dynamic &payload,
-    const EventPriority &priority
-  ) const = 0;
-
-  virtual void releaseEventTarget(const EventTarget &eventTarget) const = 0;
+  void dispatchEvent(const RawEvent &rawEvent, EventPriority priority) const;
 
+ private:
+  std::array<std::unique_ptr<EventQueue>, 4> eventQueues_;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/events/EventEmitter.cpp b/ReactCommon/fabric/events/EventEmitter.cpp
index 2e99199eea7035..cd823647a79252 100644
--- a/ReactCommon/fabric/events/EventEmitter.cpp
+++ b/ReactCommon/fabric/events/EventEmitter.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,42 +8,85 @@
 #include "EventEmitter.h"
 
 #include <folly/dynamic.h>
+#include <react/debug/SystraceSection.h>
+
+#include "RawEvent.h"
 
 namespace facebook {
 namespace react {
 
-EventEmitter::EventEmitter(const EventTarget &eventTarget, const Tag &tag, const SharedEventDispatcher &eventDispatcher):
-  eventTarget_(eventTarget),
-  tag_(tag),
-  eventDispatcher_(eventDispatcher) {
+// TODO(T29874519): Get rid of "top" prefix once and for all.
+/*
+ * Capitalizes the first letter of the event type and adds "top" prefix if
+ * necessary (e.g. "layout" becames "topLayout").
+ */
+static std::string normalizeEventType(const std::string &type) {
+  auto prefixedType = type;
+  if (type.find("top", 0) != 0) {
+    prefixedType.insert(0, "top");
+    prefixedType[3] = toupper(prefixedType[3]);
+  }
+  return prefixedType;
 }
 
-EventEmitter::~EventEmitter() {
-  auto &&eventDispatcher = eventDispatcher_.lock();
-  if (eventDispatcher && eventTarget_) {
-    eventDispatcher->releaseEventTarget(eventTarget_);
-  }
+std::recursive_mutex &EventEmitter::DispatchMutex() {
+  static std::recursive_mutex mutex;
+  return mutex;
 }
 
+EventEmitter::EventEmitter(
+    SharedEventTarget eventTarget,
+    Tag tag,
+    WeakEventDispatcher eventDispatcher)
+    : eventTarget_(std::move(eventTarget)),
+      weakEventTarget_({}),
+      tag_(tag),
+      eventDispatcher_(std::move(eventDispatcher)) {}
+
 void EventEmitter::dispatchEvent(
-  const std::string &type,
-  const folly::dynamic &payload,
-  const EventPriority &priority
-) const {
-  const auto &eventDispatcher = eventDispatcher_.lock();
+    const std::string &type,
+    const folly::dynamic &payload,
+    const EventPriority &priority) const {
+  SystraceSection s("EventEmitter::dispatchEvent");
+  auto eventDispatcher = eventDispatcher_.lock();
   if (!eventDispatcher) {
     return;
   }
 
-  assert(eventTarget_ && "Attempted to dispatch an event without an eventTarget.");
-
   // Mixing `target` into `payload`.
   assert(payload.isObject());
   folly::dynamic extendedPayload = folly::dynamic::object("target", tag_);
   extendedPayload.merge_patch(payload);
 
-  // TODO(T29610783): Reconsider using dynamic dispatch here.
-  eventDispatcher->dispatchEvent(eventTarget_, type, extendedPayload, priority);
+  eventDispatcher->dispatchEvent(
+      RawEvent(normalizeEventType(type), extendedPayload, eventTarget_),
+      priority);
+}
+
+void EventEmitter::enable() const {
+  enableCounter_++;
+  toggleEventTargetOwnership_();
+}
+
+void EventEmitter::disable() const {
+  enableCounter_--;
+  toggleEventTargetOwnership_();
+}
+
+void EventEmitter::toggleEventTargetOwnership_() const {
+  bool shouldBeRetained = enableCounter_ > 0;
+  bool alreadyBeRetained = eventTarget_ != nullptr;
+  if (shouldBeRetained == alreadyBeRetained) {
+    return;
+  }
+
+  if (shouldBeRetained) {
+    eventTarget_ = weakEventTarget_.lock();
+    weakEventTarget_.reset();
+  } else {
+    weakEventTarget_ = eventTarget_;
+    eventTarget_.reset();
+  }
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/events/EventEmitter.h b/ReactCommon/fabric/events/EventEmitter.h
index f2f41732e65244..a974822d0cb5f0 100644
--- a/ReactCommon/fabric/events/EventEmitter.h
+++ b/ReactCommon/fabric/events/EventEmitter.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,8 +10,8 @@
 #include <mutex>
 
 #include <folly/dynamic.h>
-#include <fabric/events/EventDispatcher.h>
-#include <fabric/events/primitives.h>
+#include <react/events/EventDispatcher.h>
+#include <react/events/primitives.h>
 
 namespace facebook {
 namespace react {
@@ -22,40 +22,71 @@ using SharedEventEmitter = std::shared_ptr<const EventEmitter>;
 
 /*
  * Base class for all particular typed event handlers.
- * Stores `InstanceHandle` identifying a particular component and the pointer
- * to `EventDispatcher` which is responsible for delivering the event.
+ * Stores a pointer to `EventTarget` identifying a particular component and
+ * a weak pointer to `EventDispatcher` which is responsible for delivering the
+ * event.
  *
- * TODO: Reconsider naming of all event-related things.
+ * Note: Retaining an `EventTarget` does *not* guarantee that actual event
+ * target exists and/or valid in JavaScript realm. The `EventTarget` retains an
+ * `EventTargetWrapper` which wraps JavaScript object in `unsafe-unretained`
+ * manner. Retaining the `EventTarget` *does* indicate that we can use that to
+ * get an actual JavaScript object from that in the future *ensuring safety
+ * beforehand somehow*; JSI maintains `WeakObject` object as long as we retain
+ * the `EventTarget`. All `EventTarget` instances must be deallocated before
+ * stopping JavaScript machine.
  */
 class EventEmitter {
-
   /*
    * We have to repeat `Tag` type definition here because `events` module does
    * not depend on `core` module (and should not).
    */
   using Tag = int32_t;
 
-public:
-  EventEmitter(const EventTarget &eventTarget, const Tag &tag, const SharedEventDispatcher &eventDispatcher);
-  virtual ~EventEmitter();
+ public:
+  static std::recursive_mutex &DispatchMutex();
+
+  EventEmitter(
+      SharedEventTarget eventTarget,
+      Tag tag,
+      WeakEventDispatcher eventDispatcher);
+
+  virtual ~EventEmitter() = default;
+
+  /*
+   * `DispatchMutex` must be acquired before calling.
+   * Enables/disables event emitter.
+   * Enabled event emitter retains a pointer to `eventTarget` strongly (as
+   * `std::shared_ptr`) whereas disabled one weakly (as `std::weak_ptr`).
+   * The enable state is additive; a number of `enable` calls should be equal to
+   * a number of `disable` calls to release the event target.
+   */
+  void enable() const;
+  void disable() const;
 
-protected:
+ protected:
+#ifdef ANDROID
+  // We need this temporarily due to lack of Java-counterparts for particular
+  // subclasses.
+ public:
+#endif
 
   /*
    * Initates an event delivery process.
    * Is used by particular subclasses only.
    */
   void dispatchEvent(
-    const std::string &type,
-    const folly::dynamic &payload = folly::dynamic::object(),
-    const EventPriority &priority = EventPriority::AsynchronousBatched
-  ) const;
+      const std::string &type,
+      const folly::dynamic &payload = folly::dynamic::object(),
+      const EventPriority &priority = EventPriority::AsynchronousBatched) const;
 
-private:
+ private:
+  void toggleEventTargetOwnership_() const;
 
-  mutable EventTarget eventTarget_ {nullptr};
+  mutable SharedEventTarget eventTarget_;
+  mutable WeakEventTarget weakEventTarget_;
   Tag tag_;
-  std::weak_ptr<const EventDispatcher> eventDispatcher_;
+  WeakEventDispatcher eventDispatcher_;
+  mutable int enableCounter_{0};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/events/EventQueue.cpp b/ReactCommon/fabric/events/EventQueue.cpp
new file mode 100644
index 00000000000000..2ec13d5c1dac2a
--- /dev/null
+++ b/ReactCommon/fabric/events/EventQueue.cpp
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "EventQueue.h"
+
+#include "EventEmitter.h"
+
+namespace facebook {
+namespace react {
+
+EventQueue::EventQueue(
+    EventPipe eventPipe,
+    std::unique_ptr<EventBeat> eventBeat)
+    : eventPipe_(std::move(eventPipe)), eventBeat_(std::move(eventBeat)) {
+  eventBeat_->setBeatCallback(
+      std::bind(&EventQueue::onBeat, this, std::placeholders::_1));
+}
+
+void EventQueue::enqueueEvent(const RawEvent &rawEvent) const {
+  std::lock_guard<std::mutex> lock(queueMutex_);
+  queue_.push_back(rawEvent);
+}
+
+void EventQueue::onBeat(jsi::Runtime &runtime) const {
+  std::vector<RawEvent> queue;
+
+  {
+    std::lock_guard<std::mutex> lock(queueMutex_);
+
+    if (queue_.size() == 0) {
+      return;
+    }
+
+    queue = std::move(queue_);
+    queue_.clear();
+  }
+
+  {
+    std::lock_guard<std::recursive_mutex> lock(EventEmitter::DispatchMutex());
+
+    for (const auto &event : queue) {
+      eventPipe_(
+          runtime, event.eventTarget.lock().get(), event.type, event.payload);
+    }
+  }
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/EventQueue.h b/ReactCommon/fabric/events/EventQueue.h
new file mode 100644
index 00000000000000..1a322beddfc022
--- /dev/null
+++ b/ReactCommon/fabric/events/EventQueue.h
@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <memory>
+#include <mutex>
+#include <vector>
+
+#include <jsi/jsi.h>
+#include <react/events/EventBeat.h>
+#include <react/events/RawEvent.h>
+#include <react/events/primitives.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event Queue synchronized with given Event Beat and dispatching event
+ * using given Event Pipe.
+ */
+class EventQueue {
+ public:
+  EventQueue(EventPipe eventPipe, std::unique_ptr<EventBeat> eventBeat);
+  virtual ~EventQueue() = default;
+
+  /*
+   * Enqueues and (probably later) dispatch a given event.
+   * Can be called on any thread.
+   */
+  virtual void enqueueEvent(const RawEvent &rawEvent) const;
+
+ protected:
+  void onBeat(jsi::Runtime &runtime) const;
+
+  const EventPipe eventPipe_;
+  const std::unique_ptr<EventBeat> eventBeat_;
+  // Thread-safe, protected by `queueMutex_`.
+  mutable std::vector<RawEvent> queue_;
+  mutable std::mutex queueMutex_;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/RawEvent.cpp b/ReactCommon/fabric/events/RawEvent.cpp
new file mode 100644
index 00000000000000..e73d06dcdc8aff
--- /dev/null
+++ b/ReactCommon/fabric/events/RawEvent.cpp
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "RawEvent.h"
+
+namespace facebook {
+namespace react {
+
+RawEvent::RawEvent(
+    std::string type,
+    folly::dynamic payload,
+    WeakEventTarget eventTarget)
+    : type(std::move(type)),
+      payload(std::move(payload)),
+      eventTarget(std::move(eventTarget)) {}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/RawEvent.h b/ReactCommon/fabric/events/RawEvent.h
new file mode 100644
index 00000000000000..1b34f884f8b40a
--- /dev/null
+++ b/ReactCommon/fabric/events/RawEvent.h
@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+#pragma once
+
+#include <memory>
+
+#include <folly/dynamic.h>
+#include <react/events/primitives.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Represents ready-to-dispatch event object.
+ */
+class RawEvent {
+ public:
+  RawEvent(
+      std::string type,
+      folly::dynamic payload,
+      WeakEventTarget eventTarget);
+
+  const std::string type;
+  const folly::dynamic payload;
+  const WeakEventTarget eventTarget;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/UnbatchedEventQueue.cpp b/ReactCommon/fabric/events/UnbatchedEventQueue.cpp
new file mode 100644
index 00000000000000..9c3b20670c8bed
--- /dev/null
+++ b/ReactCommon/fabric/events/UnbatchedEventQueue.cpp
@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "UnbatchedEventQueue.h"
+
+namespace facebook {
+namespace react {
+
+void UnbatchedEventQueue::enqueueEvent(const RawEvent &rawEvent) const {
+  EventQueue::enqueueEvent(rawEvent);
+
+  eventBeat_->request();
+  eventBeat_->induce();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/UnbatchedEventQueue.h b/ReactCommon/fabric/events/UnbatchedEventQueue.h
new file mode 100644
index 00000000000000..46f2392e928aaf
--- /dev/null
+++ b/ReactCommon/fabric/events/UnbatchedEventQueue.h
@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <react/events/EventQueue.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Event Queue that dispatches events as granular as possible without waiting
+ * for the next beat.
+ */
+class UnbatchedEventQueue final : public EventQueue {
+ public:
+  using EventQueue::EventQueue;
+
+  void enqueueEvent(const RawEvent &rawEvent) const override;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/events/primitives.h b/ReactCommon/fabric/events/primitives.h
index 5dc5cb5d62d5d2..cd8a61a9e792f9 100644
--- a/ReactCommon/fabric/events/primitives.h
+++ b/ReactCommon/fabric/events/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,13 @@
 
 #pragma once
 
+#include <folly/dynamic.h>
+#include <jsi/jsi.h>
+
 namespace facebook {
 namespace react {
 
-enum class EventPriority {
+enum class EventPriority : int {
   SynchronousUnbatched,
   SynchronousBatched,
   AsynchronousUnbatched,
@@ -19,18 +22,36 @@ enum class EventPriority {
   Sync = SynchronousUnbatched,
   Work = SynchronousBatched,
   Interactive = AsynchronousUnbatched,
-  Deferred = AsynchronousBatched,
+  Deferred = AsynchronousBatched
 };
 
-/* `InstanceHandler`, `EventTarget`, and `EventHandler` are all opaque
- * raw pointers. We use `struct {} *` trick to differentiate them in compiler's
- * eyes to ensure type safety.
- * These structs must have names (and the names must be exported)
- * to allow consistent template (e.g. `std::function`) instantiating
- * across different modules.
+/*
+ * We need this types only to ensure type-safety when we deal with them.
+ * Conceptually, they are opaque pointers to some types that derived from those
+ * classes.
+ *
+ * `EventHandler` is managed as a `unique_ptr`, so it must have a *virtual*
+ * destructor to allow proper deallocation having only a pointer
+ * to the base (`EventHandler`) class.
+ *
+ * `EventTarget` is managed as a `shared_ptr`, so it does not need to have a
+ * virtual destructor because `shared_ptr` stores a pointer to destructor
+ * inside.
  */
-using EventTarget = struct EventTargetDummyStruct {} *;
-using EventHandler = struct EventHandlerDummyStruct {} *;
+struct EventHandler {
+  virtual ~EventHandler() = default;
+};
+using UniqueEventHandler = std::unique_ptr<const EventHandler>;
+
+struct EventTarget {};
+using SharedEventTarget = std::shared_ptr<const EventTarget>;
+using WeakEventTarget = std::weak_ptr<const EventTarget>;
+
+using EventPipe = std::function<void(
+    jsi::Runtime &runtime,
+    const EventTarget *eventTarget,
+    const std::string &type,
+    const folly::dynamic &payload)>;
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/events/tests/EventsTest.cpp b/ReactCommon/fabric/events/tests/EventsTest.cpp
index 3e626f96d06afb..c6fe25b8413c95 100644
--- a/ReactCommon/fabric/events/tests/EventsTest.cpp
+++ b/ReactCommon/fabric/events/tests/EventsTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/graphics/BUCK b/ReactCommon/fabric/graphics/BUCK
index 12ff295f636d5a..a1386775b521b8 100644
--- a/ReactCommon/fabric/graphics/BUCK
+++ b/ReactCommon/fabric/graphics/BUCK
@@ -1,12 +1,11 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
     "get_apple_inspector_flags",
-    "react_native_xplat_target",
     "rn_xplat_cxx_library",
     "subdir_glob",
 )
@@ -31,7 +30,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/graphics",
+        prefix = "react/graphics",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -43,7 +42,7 @@ rn_xplat_cxx_library(
         [
             ("platform/android", "**/*.h"),
         ],
-        prefix = "fabric/graphics",
+        prefix = "react/graphics",
     ),
     fbandroid_srcs = glob(
         [
@@ -64,7 +63,7 @@ rn_xplat_cxx_library(
         [
             ("platform/ios", "*.h"),
         ],
-        prefix = "fabric/graphics",
+        prefix = "react/graphics",
     ),
     ios_frameworks = [
         "$SDKROOT/System/Library/Frameworks/CoreGraphics.framework",
@@ -105,7 +104,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/graphics/ColorComponents.h b/ReactCommon/fabric/graphics/ColorComponents.h
index 489e1888668f2e..3f3123862fb00d 100644
--- a/ReactCommon/fabric/graphics/ColorComponents.h
+++ b/ReactCommon/fabric/graphics/ColorComponents.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,10 +11,10 @@ namespace facebook {
 namespace react {
 
 struct ColorComponents {
-  float red {0};
-  float green {0};
-  float blue {0};
-  float alpha {0};
+  float red{0};
+  float green{0};
+  float blue{0};
+  float alpha{0};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/graphics/Geometry.h b/ReactCommon/fabric/graphics/Geometry.h
index 3db79088609d80..df491e4a167480 100644
--- a/ReactCommon/fabric/graphics/Geometry.h
+++ b/ReactCommon/fabric/graphics/Geometry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -6,9 +6,10 @@
 #pragma once
 
 #include <algorithm>
+#include <functional>
 #include <tuple>
 
-#include <fabric/graphics/Float.h>
+#include <react/graphics/Float.h>
 
 namespace facebook {
 namespace react {
@@ -17,26 +18,30 @@ namespace react {
  * Point
  */
 struct Point {
-  Float x {0};
-  Float y {0};
+  Float x{0};
+  Float y{0};
 
-  Point& operator += (const Point& rhs) {
-    x += rhs.x;
-    y += rhs.y;
+  Point &operator+=(const Point &point) {
+    x += point.x;
+    y += point.y;
     return *this;
   }
 
-  friend Point operator + (Point lhs, const Point& rhs) {
+  Point &operator*=(const Point &point) {
+    x *= point.x;
+    y *= point.y;
+    return *this;
+  }
+
+  friend Point operator+(Point lhs, const Point &rhs) {
     return lhs += rhs;
   }
 
-  bool operator ==(const Point& rhs) const {
-    return
-      std::tie(this->x, this->y) ==
-      std::tie(rhs.x, rhs.y);
+  bool operator==(const Point &rhs) const {
+    return std::tie(this->x, this->y) == std::tie(rhs.x, rhs.y);
   }
 
-  bool operator !=(const Point& rhs) const {
+  bool operator!=(const Point &rhs) const {
     return !(*this == rhs);
   }
 };
@@ -45,16 +50,27 @@ struct Point {
  * Size
  */
 struct Size {
-  Float width {0};
-  Float height {0};
+  Float width{0};
+  Float height{0};
 
-  bool operator ==(const Size& rhs) const {
-    return
-      std::tie(this->width, this->height) ==
-      std::tie(rhs.width, rhs.height);
+  Size &operator+=(const Point &point) {
+    width += point.x;
+    height += point.y;
+    return *this;
   }
 
-  bool operator !=(const Size& rhs) const {
+  Size &operator*=(const Point &point) {
+    width *= point.x;
+    height *= point.y;
+    return *this;
+  }
+
+  bool operator==(const Size &rhs) const {
+    return std::tie(this->width, this->height) ==
+        std::tie(rhs.width, rhs.height);
+  }
+
+  bool operator!=(const Size &rhs) const {
     return !(*this == rhs);
   }
 };
@@ -63,85 +79,151 @@ struct Size {
  * Rect: Point and Size
  */
 struct Rect {
-  Point origin {0, 0};
-  Size size {0, 0};
+  Point origin{0, 0};
+  Size size{0, 0};
 
-  bool operator ==(const Rect& rhs) const {
-    return
-      std::tie(this->origin, this->size) ==
-      std::tie(rhs.origin, rhs.size);
+  bool operator==(const Rect &rhs) const {
+    return std::tie(this->origin, this->size) == std::tie(rhs.origin, rhs.size);
   }
 
-  bool operator !=(const Rect& rhs) const {
+  bool operator!=(const Rect &rhs) const {
     return !(*this == rhs);
   }
 
-  Float getMaxX() const { return size.width > 0 ? origin.x + size.width : origin.x; }
-  Float getMaxY() const { return size.height > 0 ? origin.y + size.height : origin.y; }
-  Float getMinX() const { return size.width >= 0 ? origin.x : origin.x + size.width; }
-  Float getMinY() const { return size.height >= 0 ? origin.y : origin.y + size.height; }
+  Float getMaxX() const {
+    return size.width > 0 ? origin.x + size.width : origin.x;
+  }
+  Float getMaxY() const {
+    return size.height > 0 ? origin.y + size.height : origin.y;
+  }
+  Float getMinX() const {
+    return size.width >= 0 ? origin.x : origin.x + size.width;
+  }
+  Float getMinY() const {
+    return size.height >= 0 ? origin.y : origin.y + size.height;
+  }
 
   void unionInPlace(const Rect &rect) {
-    Float x1 = std::min(getMinX(), rect.getMinX());
-    Float y1 = std::min(getMinY(), rect.getMinY());
-    Float x2 = std::max(getMaxX(), rect.getMaxX());
-    Float y2 = std::max(getMaxY(), rect.getMaxY());
+    auto x1 = std::min(getMinX(), rect.getMinX());
+    auto y1 = std::min(getMinY(), rect.getMinY());
+    auto x2 = std::max(getMaxX(), rect.getMaxX());
+    auto y2 = std::max(getMaxY(), rect.getMaxY());
     origin = {x1, y1};
     size = {x2 - x1, y2 - y1};
   }
 };
 
 /*
- * EdgeInsets
+ * Generic data structure describes some values associated with *edges*
+ * of a rectangle.
  */
-struct EdgeInsets {
-  Float left {0};
-  Float top {0};
-  Float right {0};
-  Float bottom {0};
-
-  bool operator ==(const EdgeInsets& rhs) const {
-    return
-      std::tie(this->left, this->top, this->right, this->bottom) ==
-      std::tie(rhs.left, rhs.top, rhs.right, rhs.bottom);
+template <typename T>
+struct RectangleEdges {
+  T left{};
+  T top{};
+  T right{};
+  T bottom{};
+
+  bool operator==(const RectangleEdges<T> &rhs) const {
+    return std::tie(this->left, this->top, this->right, this->bottom) ==
+        std::tie(rhs.left, rhs.top, rhs.right, rhs.bottom);
   }
 
-  bool operator !=(const EdgeInsets& rhs) const {
+  bool operator!=(const RectangleEdges<T> &rhs) const {
     return !(*this == rhs);
   }
 
   bool isUniform() const {
-    return left == top &&
-      left == right &&
-      left == bottom;
+    return left == top && left == right && left == bottom;
   }
 };
 
 /*
- * CornerInsets
+ * Generic data structure describes some values associated with *corners*
+ * of a rectangle.
  */
-struct CornerInsets {
-  Float topLeft {0};
-  Float topRight {0};
-  Float bottomLeft {0};
-  Float bottomRight {0};
-
-  bool operator ==(const CornerInsets& rhs) const {
-    return
-    std::tie(this->topLeft, this->topRight, this->bottomLeft, this->bottomRight) ==
-    std::tie(rhs.topLeft, rhs.topRight, rhs.bottomLeft, rhs.bottomRight);
+template <typename T>
+struct RectangleCorners {
+  T topLeft{};
+  T topRight{};
+  T bottomLeft{};
+  T bottomRight{};
+
+  bool operator==(const RectangleCorners<T> &rhs) const {
+    return std::tie(
+               this->topLeft,
+               this->topRight,
+               this->bottomLeft,
+               this->bottomRight) ==
+        std::tie(rhs.topLeft, rhs.topRight, rhs.bottomLeft, rhs.bottomRight);
   }
 
-  bool operator !=(const CornerInsets& rhs) const {
+  bool operator!=(const RectangleCorners<T> &rhs) const {
     return !(*this == rhs);
   }
 
   bool isUniform() const {
-    return topLeft == topRight &&
-      topLeft == bottomLeft &&
-      topLeft == bottomRight;
+    return topLeft == topRight && topLeft == bottomLeft &&
+        topLeft == bottomRight;
   }
 };
 
+/*
+ * EdgeInsets
+ */
+using EdgeInsets = RectangleEdges<Float>;
+
+/*
+ * CornerInsets
+ */
+using CornerInsets = RectangleCorners<Float>;
+
 } // namespace react
 } // namespace facebook
+
+namespace std {
+template <>
+struct hash<facebook::react::Point> {
+  size_t operator()(const facebook::react::Point &point) const {
+    return hash<decltype(point.x)>{}(point.x) +
+        hash<decltype(point.y)>{}(point.y);
+  }
+};
+
+template <>
+struct hash<facebook::react::Size> {
+  size_t operator()(const facebook::react::Size &size) const {
+    return hash<decltype(size.width)>{}(size.width) +
+        hash<decltype(size.height)>{}(size.height);
+  }
+};
+
+template <>
+struct hash<facebook::react::Rect> {
+  size_t operator()(const facebook::react::Rect &rect) const {
+    return hash<decltype(rect.origin)>{}(rect.origin) +
+        hash<decltype(rect.size)>{}(rect.size);
+  }
+};
+
+template <typename T>
+struct hash<facebook::react::RectangleEdges<T>> {
+  size_t operator()(const facebook::react::RectangleEdges<T> &edges) const {
+    return hash<decltype(edges.left)>{}(edges.left) +
+        hash<decltype(edges.right)>{}(edges.right) +
+        hash<decltype(edges.top)>{}(edges.top) +
+        hash<decltype(edges.bottom)>{}(edges.bottom);
+  }
+};
+
+template <typename T>
+struct hash<facebook::react::RectangleCorners<T>> {
+  size_t operator()(const facebook::react::RectangleCorners<T> &corners) const {
+    return hash<decltype(corners.topLeft)>{}(corners.topLeft) +
+        hash<decltype(corners.bottomLeft)>{}(corners.bottomLeft) +
+        hash<decltype(corners.topRight)>{}(corners.topRight) +
+        hash<decltype(corners.bottomRight)>{}(corners.bottomRight);
+  }
+};
+
+} // namespace std
diff --git a/ReactCommon/fabric/graphics/conversions.h b/ReactCommon/fabric/graphics/conversions.h
index 3d5cc42752890c..aa847b933d92a8 100644
--- a/ReactCommon/fabric/graphics/conversions.h
+++ b/ReactCommon/fabric/graphics/conversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,8 +8,8 @@
 #pragma once
 
 #include <folly/dynamic.h>
-#include <fabric/graphics/Color.h>
-#include <fabric/graphics/Geometry.h>
+#include <react/graphics/Color.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
@@ -24,7 +24,7 @@ inline void fromDynamic(const folly::dynamic &value, SharedColor &result) {
 
   if (value.isNumber()) {
     auto argb = value.asInt();
-    float ratio = 256;
+    auto ratio = 256.f;
     alpha = ((argb >> 24) & 0xFF) / ratio;
     red = ((argb >> 16) & 0xFF) / ratio;
     green = ((argb >> 8) & 0xFF) / ratio;
@@ -43,25 +43,34 @@ inline void fromDynamic(const folly::dynamic &value, SharedColor &result) {
   result = colorFromComponents({red, green, blue, alpha});
 }
 
+inline folly::dynamic toDynamic(const SharedColor &color) {
+  ColorComponents components = colorComponentsFromColor(color);
+  auto ratio = 256.f;
+  return (
+      ((int)(components.alpha * ratio) & 0xff) << 24 |
+      ((int)(components.red * ratio) & 0xff) << 16 |
+      ((int)(components.green * ratio) & 0xff) << 8 |
+      ((int)(components.blue * ratio) & 0xff));
+}
+
 inline std::string toString(const SharedColor &value) {
   ColorComponents components = colorComponentsFromColor(value);
-  const float ratio = 256;
-  return "rgba(" +
-    folly::to<std::string>(round(components.red * ratio)) + ", " +
-    folly::to<std::string>(round(components.green * ratio)) + ", " +
-    folly::to<std::string>(round(components.blue * ratio)) + ", " +
-    folly::to<std::string>(round(components.alpha * ratio)) + ")";
+  auto ratio = 256.f;
+  return "rgba(" + folly::to<std::string>(round(components.red * ratio)) +
+      ", " + folly::to<std::string>(round(components.green * ratio)) + ", " +
+      folly::to<std::string>(round(components.blue * ratio)) + ", " +
+      folly::to<std::string>(round(components.alpha * ratio)) + ")";
 }
 
 #pragma mark - Geometry
 
 inline void fromDynamic(const folly::dynamic &value, Point &result) {
   if (value.isObject()) {
-    result = Point {(Float)value["x"].asDouble(), (Float)value["y"].asDouble()};
+    result = Point{(Float)value["x"].asDouble(), (Float)value["y"].asDouble()};
     return;
   }
   if (value.isArray()) {
-    result = Point {(Float)value[0].asDouble(), (Float)value[1].asDouble()};
+    result = Point{(Float)value[0].asDouble(), (Float)value[1].asDouble()};
     return;
   }
   abort();
@@ -69,11 +78,12 @@ inline void fromDynamic(const folly::dynamic &value, Point &result) {
 
 inline void fromDynamic(const folly::dynamic &value, Size &result) {
   if (value.isObject()) {
-    result = Size {(Float)value["width"].asDouble(), (Float)value["height"].asDouble()};
+    result = Size{(Float)value["width"].asDouble(),
+                  (Float)value["height"].asDouble()};
     return;
   }
   if (value.isArray()) {
-    result = Size {(Float)value[0].asDouble(), (Float)value[1].asDouble()};
+    result = Size{(Float)value[0].asDouble(), (Float)value[1].asDouble()};
     return;
   }
   abort();
@@ -82,25 +92,21 @@ inline void fromDynamic(const folly::dynamic &value, Size &result) {
 inline void fromDynamic(const folly::dynamic &value, EdgeInsets &result) {
   if (value.isNumber()) {
     const Float number = value.asDouble();
-    result = EdgeInsets {number, number, number, number};
+    result = EdgeInsets{number, number, number, number};
     return;
   }
   if (value.isObject()) {
-    result = EdgeInsets {
-      (Float)value["top"].asDouble(),
-      (Float)value["left"].asDouble(),
-      (Float)value["bottom"].asDouble(),
-      (Float)value["right"].asDouble()
-    };
+    result = EdgeInsets{(Float)value["top"].asDouble(),
+                        (Float)value["left"].asDouble(),
+                        (Float)value["bottom"].asDouble(),
+                        (Float)value["right"].asDouble()};
     return;
   }
   if (value.isArray()) {
-    result = EdgeInsets {
-      (Float)value[0].asDouble(),
-      (Float)value[1].asDouble(),
-      (Float)value[2].asDouble(),
-      (Float)value[3].asDouble()
-    };
+    result = EdgeInsets{(Float)value[0].asDouble(),
+                        (Float)value[1].asDouble(),
+                        (Float)value[2].asDouble(),
+                        (Float)value[3].asDouble()};
     return;
   }
   abort();
@@ -109,36 +115,34 @@ inline void fromDynamic(const folly::dynamic &value, EdgeInsets &result) {
 inline void fromDynamic(const folly::dynamic &value, CornerInsets &result) {
   if (value.isNumber()) {
     const Float number = value.asDouble();
-    result = CornerInsets {number, number, number, number};
+    result = CornerInsets{number, number, number, number};
     return;
   }
   if (value.isObject()) {
-    result = CornerInsets {
-      (Float)value["topLeft"].asDouble(),
-      (Float)value["topRight"].asDouble(),
-      (Float)value["bottomLeft"].asDouble(),
-      (Float)value["bottomRight"].asDouble()
-    };
+    result = CornerInsets{(Float)value["topLeft"].asDouble(),
+                          (Float)value["topRight"].asDouble(),
+                          (Float)value["bottomLeft"].asDouble(),
+                          (Float)value["bottomRight"].asDouble()};
     return;
   }
   if (value.isArray()) {
-    result = CornerInsets {
-      (Float)value[0].asDouble(),
-      (Float)value[1].asDouble(),
-      (Float)value[2].asDouble(),
-      (Float)value[3].asDouble()
-    };
+    result = CornerInsets{(Float)value[0].asDouble(),
+                          (Float)value[1].asDouble(),
+                          (Float)value[2].asDouble(),
+                          (Float)value[3].asDouble()};
     return;
   }
   abort();
 }
 
 inline std::string toString(const Point &point) {
-  return "{" + folly::to<std::string>(point.x) + ", " + folly::to<std::string>(point.y) + "}";
+  return "{" + folly::to<std::string>(point.x) + ", " +
+      folly::to<std::string>(point.y) + "}";
 }
 
 inline std::string toString(const Size &size) {
-  return "{" + folly::to<std::string>(size.width) + ", " + folly::to<std::string>(size.height) + "}";
+  return "{" + folly::to<std::string>(size.width) + ", " +
+      folly::to<std::string>(size.height) + "}";
 }
 
 inline std::string toString(const Rect &rect) {
@@ -146,19 +150,17 @@ inline std::string toString(const Rect &rect) {
 }
 
 inline std::string toString(const EdgeInsets &edgeInsets) {
-  return "{" +
-    folly::to<std::string>(edgeInsets.left) + ", " +
-    folly::to<std::string>(edgeInsets.top) + ", " +
-    folly::to<std::string>(edgeInsets.right) + ", " +
-    folly::to<std::string>(edgeInsets.bottom) + "}";
+  return "{" + folly::to<std::string>(edgeInsets.left) + ", " +
+      folly::to<std::string>(edgeInsets.top) + ", " +
+      folly::to<std::string>(edgeInsets.right) + ", " +
+      folly::to<std::string>(edgeInsets.bottom) + "}";
 }
 
 inline std::string toString(const CornerInsets &cornerInsets) {
-  return "{" +
-    folly::to<std::string>(cornerInsets.topLeft) + ", " +
-    folly::to<std::string>(cornerInsets.topRight) + ", " +
-    folly::to<std::string>(cornerInsets.bottomLeft) + ", " +
-    folly::to<std::string>(cornerInsets.bottomRight) + "}";
+  return "{" + folly::to<std::string>(cornerInsets.topLeft) + ", " +
+      folly::to<std::string>(cornerInsets.topRight) + ", " +
+      folly::to<std::string>(cornerInsets.bottomLeft) + ", " +
+      folly::to<std::string>(cornerInsets.bottomRight) + "}";
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/graphics/platform/android/Color.cpp b/ReactCommon/fabric/graphics/platform/android/Color.cpp
index 9a7e88ac248a19..35fc3e2af0b3ed 100644
--- a/ReactCommon/fabric/graphics/platform/android/Color.cpp
+++ b/ReactCommon/fabric/graphics/platform/android/Color.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,22 +11,36 @@ namespace facebook {
 namespace react {
 
 SharedColor colorFromComponents(ColorComponents components) {
+  float ratio = 255.9999;
   return SharedColor(
-    ((int)components.alpha & 0xff) << 24 |
-    ((int)components.red & 0xff) << 16 |
-    ((int)components.green & 0xff) << 8 |
-    ((int)components.blue & 0xff)
-  );
+      ((int)(components.alpha * ratio) & 0xff) << 24 |
+      ((int)(components.red * ratio) & 0xff) << 16 |
+      ((int)(components.green * ratio) & 0xff) << 8 |
+      ((int)(components.blue * ratio) & 0xff));
 }
 
 ColorComponents colorComponentsFromColor(SharedColor sharedColor) {
+  float ratio = 256;
   Color color = *sharedColor;
-  return ColorComponents {
-    (float)((color >> 16) & 0xff),
-    (float)((color >>  8) & 0xff),
-    (float)((color      ) & 0xff),
-    (float)((color >> 24) & 0xff)
-  };
+  return ColorComponents{(float)((color >> 16) & 0xff) / ratio,
+                         (float)((color >> 8) & 0xff) / ratio,
+                         (float)((color >> 0) & 0xff) / ratio,
+                         (float)((color >> 24) & 0xff) / ratio};
+}
+
+SharedColor clearColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{0, 0, 0, 0});
+  return color;
+}
+
+SharedColor blackColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{0, 0, 0, 1});
+  return color;
+}
+
+SharedColor whiteColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{1, 1, 1, 1});
+  return color;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/graphics/platform/android/Color.h b/ReactCommon/fabric/graphics/platform/android/Color.h
index ff6ed8ef480e4c..1539245659572b 100644
--- a/ReactCommon/fabric/graphics/platform/android/Color.h
+++ b/ReactCommon/fabric/graphics/platform/android/Color.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,9 +7,10 @@
 
 #pragma once
 
+#include <functional>
 #include <limits>
 
-#include <fabric/graphics/ColorComponents.h>
+#include <react/graphics/ColorComponents.h>
 
 namespace facebook {
 namespace react {
@@ -17,24 +18,20 @@ namespace react {
 using Color = int;
 
 /*
- * On Android, a color can be represented as 32 bits integer, so there is no need
- * to instantiate complex color objects and then pass them as shared pointers.
- * Hense instead of using shared_ptr, we use a simple wrapper class
+ * On Android, a color can be represented as 32 bits integer, so there is no
+ * need to instantiate complex color objects and then pass them as shared
+ * pointers. Hense instead of using shared_ptr, we use a simple wrapper class
  * which provides a pointer-like interface.
  */
 class SharedColor {
-
-public:
+ public:
   static const Color UndefinedColor = std::numeric_limits<Color>::max();
 
-  SharedColor():
-    color_(UndefinedColor) {}
+  SharedColor() : color_(UndefinedColor) {}
 
-  SharedColor(const SharedColor &sharedColor) :
-    color_(sharedColor.color_) {}
+  SharedColor(const SharedColor &sharedColor) : color_(sharedColor.color_) {}
 
-  SharedColor(Color color):
-    color_(color) {}
+  SharedColor(Color color) : color_(color) {}
 
   SharedColor &operator=(const SharedColor &sharedColor) {
     color_ = sharedColor.color_;
@@ -49,12 +46,25 @@ class SharedColor {
     return color_ != UndefinedColor;
   }
 
-private:
+ private:
   Color color_;
 };
 
 SharedColor colorFromComponents(ColorComponents components);
 ColorComponents colorComponentsFromColor(SharedColor color);
 
+SharedColor clearColor();
+SharedColor blackColor();
+SharedColor whiteColor();
+
 } // namespace react
 } // namespace facebook
+
+namespace std {
+template <>
+struct hash<facebook::react::SharedColor> {
+  size_t operator()(const facebook::react::SharedColor &sharedColor) const {
+    return hash<decltype(*sharedColor)>{}(*sharedColor);
+  }
+};
+} // namespace std
diff --git a/ReactCommon/fabric/graphics/platform/android/Float.h b/ReactCommon/fabric/graphics/platform/android/Float.h
index 8351a892322377..3a6460b65c25fe 100644
--- a/ReactCommon/fabric/graphics/platform/android/Float.h
+++ b/ReactCommon/fabric/graphics/platform/android/Float.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/graphics/platform/ios/Color.cpp b/ReactCommon/fabric/graphics/platform/ios/Color.cpp
index db03a0f4af2936..552cf5ceb64fb5 100644
--- a/ReactCommon/fabric/graphics/platform/ios/Color.cpp
+++ b/ReactCommon/fabric/graphics/platform/ios/Color.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,30 +12,42 @@ namespace react {
 
 SharedColor colorFromComponents(ColorComponents components) {
   const CGFloat componentsArray[] = {
-    components.red,
-    components.green,
-    components.blue,
-    components.alpha
-  };
+      components.red, components.green, components.blue, components.alpha};
 
-  CGColorRef color = CGColorCreate(
-    CGColorSpaceCreateDeviceRGB(),
-    componentsArray
-  );
+  auto color = CGColorCreate(CGColorSpaceCreateDeviceRGB(), componentsArray);
 
   return SharedColor(color, CFRelease);
 }
 
 ColorComponents colorComponentsFromColor(SharedColor color) {
-  int numberOfComponents = CGColorGetNumberOfComponents(color.get());
+  if (!color) {
+    // Empty color object can be considered as `clear` (black, fully
+    // transparent) color.
+    return ColorComponents{0, 0, 0, 0};
+  }
+
+  auto numberOfComponents = CGColorGetNumberOfComponents(color.get());
   assert(numberOfComponents == 4);
   const CGFloat *components = CGColorGetComponents(color.get());
-  return ColorComponents {
-    (float)components[0],
-    (float)components[1],
-    (float)components[2],
-    (float)components[3]
-  };
+  return ColorComponents{(float)components[0],
+                         (float)components[1],
+                         (float)components[2],
+                         (float)components[3]};
+}
+
+SharedColor clearColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{0, 0, 0, 0});
+  return color;
+}
+
+SharedColor blackColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{0, 0, 0, 1});
+  return color;
+}
+
+SharedColor whiteColor() {
+  static SharedColor color = colorFromComponents(ColorComponents{1, 1, 1, 1});
+  return color;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/graphics/platform/ios/Color.h b/ReactCommon/fabric/graphics/platform/ios/Color.h
index 019663e734cc2a..90780062148553 100644
--- a/ReactCommon/fabric/graphics/platform/ios/Color.h
+++ b/ReactCommon/fabric/graphics/platform/ios/Color.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <memory>
 
-#include <fabric/graphics/Float.h>
-
-#include <fabric/graphics/ColorComponents.h>
+#include <CoreGraphics/CoreGraphics.h>
+#include <react/graphics/ColorComponents.h>
+#include <react/graphics/Float.h>
 
 namespace facebook {
 namespace react {
@@ -22,5 +22,9 @@ using SharedColor = std::shared_ptr<Color>;
 SharedColor colorFromComponents(ColorComponents components);
 ColorComponents colorComponentsFromColor(SharedColor color);
 
+SharedColor clearColor();
+SharedColor blackColor();
+SharedColor whiteColor();
+
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/graphics/platform/ios/Float.h b/ReactCommon/fabric/graphics/platform/ios/Float.h
index fec03a6846d166..721922d16608a5 100644
--- a/ReactCommon/fabric/graphics/platform/ios/Float.h
+++ b/ReactCommon/fabric/graphics/platform/ios/Float.h
@@ -1,12 +1,12 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #pragma once
 
-#include <limits>
 #include <CoreGraphics/CoreGraphics.h>
+#include <limits>
 
 namespace facebook {
 namespace react {
diff --git a/ReactCommon/fabric/graphics/tests/GraphicsTest.cpp b/ReactCommon/fabric/graphics/tests/GraphicsTest.cpp
index 4684d4c5007955..53721e9ce62e3d 100644
--- a/ReactCommon/fabric/graphics/tests/GraphicsTest.cpp
+++ b/ReactCommon/fabric/graphics/tests/GraphicsTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/imagemanager/BUCK b/ReactCommon/fabric/imagemanager/BUCK
index af83b9579c35bd..0886629bb4d6d6 100644
--- a/ReactCommon/fabric/imagemanager/BUCK
+++ b/ReactCommon/fabric/imagemanager/BUCK
@@ -1,13 +1,13 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
-    "get_apple_inspector_flags",
+    "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
+    "get_apple_inspector_flags",
     "react_native_xplat_target",
     "rn_xplat_cxx_library",
-    "fb_xplat_cxx_test",
     "subdir_glob",
 )
 
@@ -32,7 +32,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/imagemanager",
+        prefix = "react/imagemanager",
     ),
     fbandroid_headers = subdir_glob(
         [
@@ -61,7 +61,7 @@ rn_xplat_cxx_library(
             ("", "*.h"),
             ("platform/ios", "RCTImagePrimitivesConversions.h"),
         ],
-        prefix = "fabric/imagemanager",
+        prefix = "react/imagemanager",
     ),
     ios_frameworks = [
         "$SDKROOT/System/Library/Frameworks/CoreGraphics.framework",
@@ -114,7 +114,7 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
diff --git a/ReactCommon/fabric/imagemanager/ImageManager.h b/ReactCommon/fabric/imagemanager/ImageManager.h
index d3f37d0ff11b39..dba71a377083d3 100644
--- a/ReactCommon/fabric/imagemanager/ImageManager.h
+++ b/ReactCommon/fabric/imagemanager/ImageManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 #include <memory>
 
-#include <fabric/imagemanager/ImageRequest.h>
-#include <fabric/imagemanager/primitives.h>
+#include <react/imagemanager/ImageRequest.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
@@ -23,14 +23,13 @@ using SharedImageManager = std::shared_ptr<ImageManager>;
  * Cross platform facade for iOS-specific RCTImageManager.
  */
 class ImageManager {
-public:
-
+ public:
   ImageManager(void *platformSpecificCounterpart);
   ~ImageManager();
 
   ImageRequest requestImage(const ImageSource &imageSource) const;
 
-private:
+ private:
   void *self_;
 };
 
diff --git a/ReactCommon/fabric/imagemanager/ImageRequest.cpp b/ReactCommon/fabric/imagemanager/ImageRequest.cpp
deleted file mode 100644
index e023f444d9c661..00000000000000
--- a/ReactCommon/fabric/imagemanager/ImageRequest.cpp
+++ /dev/null
@@ -1,49 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "ImageRequest.h"
-
-namespace facebook {
-namespace react {
-
-class ImageRequest::ImageNoLongerNeededException:
-  public std::logic_error {
-public:
-  ImageNoLongerNeededException():
-    std::logic_error("Image no longer needed.") {}
-};
-
-ImageRequest::ImageRequest(const ImageSource &imageSource, folly::Future<ImageResponse> &&responseFuture):
-  imageSource_(imageSource),
-  responseFutureSplitter_(folly::splitFuture(std::move(responseFuture))) {}
-
-ImageRequest::ImageRequest(ImageRequest &&other) noexcept:
-  imageSource_(std::move(other.imageSource_)),
-  responseFutureSplitter_(std::move(other.responseFutureSplitter_)) {
-    other.moved_ = true;
-  };
-
-ImageRequest::~ImageRequest() {
-  if (!moved_) {
-    auto future = responseFutureSplitter_.getFuture();
-    if (!future.isReady()) {
-      future.raise(ImageNoLongerNeededException());
-    }
-  }
-}
-
-folly::Future<ImageResponse> ImageRequest::getResponseFuture() const {
-  if (moved_) {
-    abort();
-  }
-
-  std::lock_guard<std::mutex> lock(mutex_);
-  return responseFutureSplitter_.getFuture();
-}
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/imagemanager/ImageRequest.h b/ReactCommon/fabric/imagemanager/ImageRequest.h
index 7d593f7be6c265..ebe0a93e7b4687 100644
--- a/ReactCommon/fabric/imagemanager/ImageRequest.h
+++ b/ReactCommon/fabric/imagemanager/ImageRequest.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,10 @@
 
 #include <mutex>
 
-#include <fabric/imagemanager/ImageResponse.h>
-#include <fabric/imagemanager/primitives.h>
 #include <folly/futures/Future.h>
 #include <folly/futures/FutureSplitter.h>
+#include <react/imagemanager/ImageResponse.h>
+#include <react/imagemanager/primitives.h>
 
 namespace facebook {
 namespace react {
@@ -26,20 +26,22 @@ namespace react {
  * Destroy to cancel the underlying request.
  */
 class ImageRequest final {
-
-public:
-
+ public:
   /*
    * The exception which is thrown when `ImageRequest` is being deallocated
    * if the future is not ready yet.
    */
   class ImageNoLongerNeededException;
 
+  ImageRequest();
+
   /*
    * `ImageRequest` is constructed with `ImageSource` and
    * `ImageResponse` future which must be moved in inside the object.
    */
-  ImageRequest(const ImageSource &imageSource, folly::Future<ImageResponse> &&responseFuture);
+  ImageRequest(
+      const ImageSource &imageSource,
+      folly::Future<ImageResponse> &&responseFuture);
 
   /*
    * The move constructor.
@@ -60,8 +62,7 @@ class ImageRequest final {
    */
   folly::Future<ImageResponse> getResponseFuture() const;
 
-private:
-
+ private:
   /*
    * Mutext to protect an access to the future.
    */
@@ -80,7 +81,7 @@ class ImageRequest final {
   /*
    * Indicates that the object was moved and hence cannot be used anymore.
    */
-  bool moved_ {false};
+  bool moved_{false};
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/imagemanager/ImageResponse.cpp b/ReactCommon/fabric/imagemanager/ImageResponse.cpp
index 39cea621884024..c9dae8d6d7ae52 100644
--- a/ReactCommon/fabric/imagemanager/ImageResponse.cpp
+++ b/ReactCommon/fabric/imagemanager/ImageResponse.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,8 +10,8 @@
 namespace facebook {
 namespace react {
 
-ImageResponse::ImageResponse(const std::shared_ptr<void> &image):
-  image_(image) {}
+ImageResponse::ImageResponse(const std::shared_ptr<void> &image)
+    : image_(image) {}
 
 std::shared_ptr<void> ImageResponse::getImage() const {
   return image_;
diff --git a/ReactCommon/fabric/imagemanager/ImageResponse.h b/ReactCommon/fabric/imagemanager/ImageResponse.h
index 1ce66af6c9396f..91f8722773f5a7 100644
--- a/ReactCommon/fabric/imagemanager/ImageResponse.h
+++ b/ReactCommon/fabric/imagemanager/ImageResponse.h
@@ -1,11 +1,11 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#import <memory>
+#include <memory>
 
 namespace facebook {
 namespace react {
@@ -14,13 +14,12 @@ namespace react {
  * Represents retrieved image bitmap and any assotiated platform-specific info.
  */
 class ImageResponse final {
-
-public:
+ public:
   ImageResponse(const std::shared_ptr<void> &image);
 
   std::shared_ptr<void> getImage() const;
 
-private:
+ private:
   std::shared_ptr<void> image_;
 };
 
diff --git a/ReactCommon/fabric/imagemanager/platform/android/ImageManager.cpp b/ReactCommon/fabric/imagemanager/platform/android/ImageManager.cpp
index b1381eb0c5b525..b0f8f410fa0bde 100644
--- a/ReactCommon/fabric/imagemanager/platform/android/ImageManager.cpp
+++ b/ReactCommon/fabric/imagemanager/platform/android/ImageManager.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,6 +11,8 @@ namespace facebook {
 namespace react {
 
 ImageManager::ImageManager(void *platformSpecificCounterpart) {
+  // Silence unused-private-field warning.
+  (void)self_;
   // Not implemented.
 }
 
@@ -20,6 +22,7 @@ ImageManager::~ImageManager() {
 
 ImageRequest ImageManager::requestImage(const ImageSource &imageSource) const {
   // Not implemented.
+  return {};
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/imagemanager/platform/android/ImageRequest.cpp b/ReactCommon/fabric/imagemanager/platform/android/ImageRequest.cpp
new file mode 100644
index 00000000000000..35b2ecfd860bff
--- /dev/null
+++ b/ReactCommon/fabric/imagemanager/platform/android/ImageRequest.cpp
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "ImageRequest.h"
+
+namespace facebook {
+namespace react {
+
+ImageRequest::ImageRequest() {}
+
+ImageRequest::ImageRequest(
+    const ImageSource &imageSource,
+    folly::Future<ImageResponse> &&responseFuture) {
+  // Not implemented.
+}
+
+ImageRequest::ImageRequest(ImageRequest &&other) noexcept
+    : imageSource_(std::move(other.imageSource_)),
+      responseFutureSplitter_(std::move(other.responseFutureSplitter_)) {
+  // Not implemented.
+}
+
+ImageRequest::~ImageRequest() {
+  // Not implemented.
+}
+
+folly::Future<ImageResponse> ImageRequest::getResponseFuture() const {
+  // Not implemented.
+  abort();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm b/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
index 55281935cc7c3d..62255d9bdc033a 100644
--- a/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
+++ b/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -15,7 +15,9 @@
 namespace react {
 
 ImageManager::ImageManager(void *platformSpecificCounterpart) {
-  self_ = (__bridge_retained void *)[[RCTImageManager alloc] initWithImageLoader:(__bridge_transfer RCTImageLoader *)platformSpecificCounterpart];
+  self_ = (__bridge_retained void *)[[RCTImageManager alloc]
+      initWithImageLoader:(__bridge RCTImageLoader *)
+                              platformSpecificCounterpart];
 }
 
 ImageManager::~ImageManager() {
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/ImageRequest.cpp b/ReactCommon/fabric/imagemanager/platform/ios/ImageRequest.cpp
new file mode 100644
index 00000000000000..afa6cb3bd929c8
--- /dev/null
+++ b/ReactCommon/fabric/imagemanager/platform/ios/ImageRequest.cpp
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "ImageRequest.h"
+
+namespace facebook {
+namespace react {
+
+class ImageRequest::ImageNoLongerNeededException : public std::logic_error {
+ public:
+  ImageNoLongerNeededException()
+      : std::logic_error("Image no longer needed.") {}
+};
+
+ImageRequest::ImageRequest(
+    const ImageSource &imageSource,
+    folly::Future<ImageResponse> &&responseFuture)
+    : imageSource_(imageSource),
+      responseFutureSplitter_(folly::splitFuture(std::move(responseFuture))) {}
+
+ImageRequest::ImageRequest(ImageRequest &&other) noexcept
+    : imageSource_(std::move(other.imageSource_)),
+      responseFutureSplitter_(std::move(other.responseFutureSplitter_)) {
+  other.moved_ = true;
+};
+
+ImageRequest::~ImageRequest() {
+  if (!moved_) {
+    auto future = responseFutureSplitter_.getFuture();
+    if (!future.isReady()) {
+      future.raise(ImageNoLongerNeededException());
+    }
+  }
+}
+
+folly::Future<ImageResponse> ImageRequest::getResponseFuture() const {
+  if (moved_) {
+    abort();
+  }
+
+  std::lock_guard<std::mutex> lock(mutex_);
+  return responseFutureSplitter_.getFuture();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.h b/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.h
index 45d6d0a1a6f655..0bd16fdabca3a7 100644
--- a/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.h
+++ b/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/imagemanager/ImageRequest.h>
-#import <fabric/imagemanager/primitives.h>
+#import <react/imagemanager/ImageRequest.h>
+#import <react/imagemanager/primitives.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -21,7 +21,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (instancetype)initWithImageLoader:(RCTImageLoader *)imageLoader;
 
-- (facebook::react::ImageRequest)requestImage:(const facebook::react::ImageSource &)imageSource;
+- (facebook::react::ImageRequest)requestImage:
+    (const facebook::react::ImageSource &)imageSource;
 
 @end
 
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.mm b/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.mm
index 4adc90b722b21d..b3e97541b91b49 100644
--- a/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.mm
+++ b/ReactCommon/fabric/imagemanager/platform/ios/RCTImageManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -16,13 +16,11 @@
 
 using namespace facebook::react;
 
-@implementation RCTImageManager
-{
+@implementation RCTImageManager {
   RCTImageLoader *_imageLoader;
 }
 
-- (instancetype)initWithImageLoader:(RCTImageLoader *)imageLoader
-{
+- (instancetype)initWithImageLoader:(RCTImageLoader *)imageLoader {
   if (self = [super init]) {
     _imageLoader = imageLoader;
   }
@@ -30,14 +28,14 @@ - (instancetype)initWithImageLoader:(RCTImageLoader *)imageLoader
   return self;
 }
 
-- (ImageRequest)requestImage:(const ImageSource &)imageSource
-{
+- (ImageRequest)requestImage:(const ImageSource &)imageSource {
   __block auto promise = folly::Promise<ImageResponse>();
 
   NSURLRequest *request = NSURLRequestFromImageSource(imageSource);
 
   auto completionBlock = ^(NSError *error, UIImage *image) {
-    auto imageResponse = ImageResponse(std::shared_ptr<void>((__bridge_retained void *)image, CFRelease));
+    auto imageResponse = ImageResponse(
+        std::shared_ptr<void>((__bridge_retained void *)image, CFRelease));
     promise.setValue(std::move(imageResponse));
   };
 
@@ -48,19 +46,23 @@ - (ImageRequest)requestImage:(const ImageSource &)imageSource
   };
 
   RCTImageLoaderCancellationBlock cancellationBlock =
-    [_imageLoader loadImageWithURLRequest:request
-                                     size:CGSizeMake(imageSource.size.width, imageSource.size.height)
-                                    scale:imageSource.scale
-                                  clipped:YES
-                               resizeMode:RCTResizeModeStretch
-                            progressBlock:nil
-                         partialLoadBlock:nil
-                          completionBlock:completionBlock];
-
-  promise.setInterruptHandler([cancellationBlock, interruptBlock](const folly::exception_wrapper &exceptionWrapper) {
-    cancellationBlock();
-    interruptBlock(exceptionWrapper);
-  });
+      [_imageLoader loadImageWithURLRequest:request
+                                       size:CGSizeMake(
+                                                imageSource.size.width,
+                                                imageSource.size.height)
+                                      scale:imageSource.scale
+                                    clipped:YES
+                                 resizeMode:RCTResizeModeStretch
+                              progressBlock:nil
+                           partialLoadBlock:nil
+                            completionBlock:completionBlock];
+
+  promise.setInterruptHandler(
+      [cancellationBlock,
+       interruptBlock](const folly::exception_wrapper &exceptionWrapper) {
+        cancellationBlock();
+        interruptBlock(exceptionWrapper);
+      });
 
   return ImageRequest(imageSource, promise.getFuture());
 }
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/RCTImagePrimitivesConversions.h b/ReactCommon/fabric/imagemanager/platform/ios/RCTImagePrimitivesConversions.h
index 32b1a07e46ff58..2a4b6f0f53e3d9 100644
--- a/ReactCommon/fabric/imagemanager/platform/ios/RCTImagePrimitivesConversions.h
+++ b/ReactCommon/fabric/imagemanager/platform/ios/RCTImagePrimitivesConversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,28 +7,39 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/imagemanager/primitives.h>
 #import <React/RCTImageLoader.h>
+#import <react/imagemanager/primitives.h>
 
 using namespace facebook::react;
 
-inline static RCTResizeMode RCTResizeModeFromImageResizeMode(ImageResizeMode imageResizeMode) {
+inline static RCTResizeMode RCTResizeModeFromImageResizeMode(
+    ImageResizeMode imageResizeMode) {
   switch (imageResizeMode) {
-    case ImageResizeMode::Cover: return RCTResizeModeCover;
-    case ImageResizeMode::Contain: return RCTResizeModeContain;
-    case ImageResizeMode::Stretch: return RCTResizeModeStretch;
-    case ImageResizeMode::Center: return RCTResizeModeCenter;
-    case ImageResizeMode::Repeat: return RCTResizeModeRepeat;
+    case ImageResizeMode::Cover:
+      return RCTResizeModeCover;
+    case ImageResizeMode::Contain:
+      return RCTResizeModeContain;
+    case ImageResizeMode::Stretch:
+      return RCTResizeModeStretch;
+    case ImageResizeMode::Center:
+      return RCTResizeModeCenter;
+    case ImageResizeMode::Repeat:
+      return RCTResizeModeRepeat;
   }
 }
 
 inline std::string toString(const ImageResizeMode &value) {
   switch (value) {
-    case ImageResizeMode::Cover: return "cover";
-    case ImageResizeMode::Contain: return "contain";
-    case ImageResizeMode::Stretch: return "stretch";
-    case ImageResizeMode::Center: return "center";
-    case ImageResizeMode::Repeat: return "repeat";
+    case ImageResizeMode::Cover:
+      return "cover";
+    case ImageResizeMode::Contain:
+      return "contain";
+    case ImageResizeMode::Stretch:
+      return "stretch";
+    case ImageResizeMode::Center:
+      return "center";
+    case ImageResizeMode::Repeat:
+      return "repeat";
   }
 }
 
@@ -41,7 +52,8 @@ inline static NSURL *NSURLFromImageSource(const ImageSource &imageSource) {
     if (!imageSource.bundle.empty()) {
       NSString *bundle = [NSString stringWithCString:imageSource.bundle.c_str()
                                             encoding:NSASCIIStringEncoding];
-      urlString = [NSString stringWithFormat:@"%@.bundle/%@", bundle, urlString];
+      urlString =
+          [NSString stringWithFormat:@"%@.bundle/%@", bundle, urlString];
     }
 
     NSURL *url = [[NSURL alloc] initWithString:urlString];
@@ -53,7 +65,8 @@ inline static NSURL *NSURLFromImageSource(const ImageSource &imageSource) {
 
     if ([urlString rangeOfString:@":"].location != NSNotFound) {
       // The URL has a scheme.
-      urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
+      urlString = [urlString
+          stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
       url = [NSURL URLWithString:urlString];
       return url;
     }
@@ -67,20 +80,21 @@ inline static NSURL *NSURLFromImageSource(const ImageSource &imageSource) {
     } else {
       if (![urlString isAbsolutePath]) {
         // Assume it's a resource path.
-        urlString = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:urlString];
+        urlString = [[[NSBundle mainBundle] resourcePath]
+            stringByAppendingPathComponent:urlString];
       }
     }
 
     url = [NSURL fileURLWithPath:urlString];
 
     return url;
-  }
-  @catch (__unused NSException *exception) {
+  } @catch (__unused NSException *exception) {
     return nil;
   }
 }
 
-inline static NSURLRequest *NSURLRequestFromImageSource(const ImageSource &imageSource) {
+inline static NSURLRequest *NSURLRequestFromImageSource(
+    const ImageSource &imageSource) {
   NSURL *url = NSURLFromImageSource(imageSource);
 
   if (!url) {
diff --git a/ReactCommon/fabric/imagemanager/primitives.h b/ReactCommon/fabric/imagemanager/primitives.h
index 21932693ad845c..5544a82ae5e362 100644
--- a/ReactCommon/fabric/imagemanager/primitives.h
+++ b/ReactCommon/fabric/imagemanager/primitives.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,30 +10,23 @@
 #include <string>
 #include <vector>
 
-#include <fabric/graphics/Geometry.h>
+#include <react/graphics/Geometry.h>
 
 namespace facebook {
 namespace react {
 
 class ImageSource {
+ public:
+  enum class Type { Invalid, Remote, Local };
 
-public:
-  enum class Type {
-    Invalid,
-    Remote,
-    Local
-  };
-
-  Type type {};
-  std::string uri {};
-  std::string bundle {};
-  Float scale {3};
-  Size size {0};
+  Type type{};
+  std::string uri{};
+  std::string bundle{};
+  Float scale{3};
+  Size size{0};
 
   bool operator==(const ImageSource &rhs) const {
-    return
-      std::tie(this->type, this->uri) ==
-      std::tie(rhs.type, rhs.uri);
+    return std::tie(this->type, this->uri) == std::tie(rhs.type, rhs.uri);
   }
 
   bool operator!=(const ImageSource &rhs) const {
diff --git a/ReactCommon/fabric/imagemanager/tests/ImageManagerTest.cpp b/ReactCommon/fabric/imagemanager/tests/ImageManagerTest.cpp
index b872b698a83934..1611e019a61b81 100644
--- a/ReactCommon/fabric/imagemanager/tests/ImageManagerTest.cpp
+++ b/ReactCommon/fabric/imagemanager/tests/ImageManagerTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #include <gtest/gtest.h>
 
-#include <fabric/imagemanager/ImageManager.h>
+#include <react/imagemanager/ImageManager.h>
 
 using namespace facebook::react;
 
diff --git a/ReactCommon/fabric/sample/SampleComponentDescriptorFactor.cpp b/ReactCommon/fabric/sample/SampleComponentDescriptorFactor.cpp
index b3066e58f9bec8..4f15775f5f34fe 100644
--- a/ReactCommon/fabric/sample/SampleComponentDescriptorFactor.cpp
+++ b/ReactCommon/fabric/sample/SampleComponentDescriptorFactor.cpp
@@ -1,13 +1,13 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <fabric/uimanager/ComponentDescriptorFactory.h>
-#include <fabric/uimanager/ComponentDescriptorRegistry.h>
-#include <fabric/uimanager/ContextContainer.h>
+#include <react/uimanager/ComponentDescriptorFactory.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+#include <react/uimanager/ContextContainer.h>
 
 namespace facebook {
 namespace react {
@@ -16,9 +16,8 @@ namespace react {
  * This is a sample implementation. Each app should provide its own.
  */
 SharedComponentDescriptorRegistry ComponentDescriptorFactory::buildRegistry(
-  const SharedEventDispatcher &eventDispatcher,
-  const SharedContextContainer &contextContainer
-) {
+    const SharedEventDispatcher &eventDispatcher,
+    const SharedContextContainer &contextContainer) {
   auto registry = std::make_shared<ComponentDescriptorRegistry>();
   return registry;
 }
diff --git a/ReactCommon/fabric/textlayoutmanager/BUCK b/ReactCommon/fabric/textlayoutmanager/BUCK
index 46dd3eb0885b30..a56bc827587c56 100644
--- a/ReactCommon/fabric/textlayoutmanager/BUCK
+++ b/ReactCommon/fabric/textlayoutmanager/BUCK
@@ -1,11 +1,12 @@
-load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
     "get_apple_compiler_flags",
     "get_apple_inspector_flags",
+    "react_native_target",
     "react_native_xplat_target",
     "rn_xplat_cxx_library",
     "subdir_glob",
@@ -31,7 +32,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/textlayoutmanager",
+        prefix = "react/textlayoutmanager",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -39,12 +40,15 @@ rn_xplat_cxx_library(
         "-std=c++14",
         "-Wall",
     ],
+    fbandroid_deps = [
+        react_native_target("jni/react/jni:jni"),
+    ],
     fbandroid_exported_headers = subdir_glob(
         [
             ("", "*.h"),
             ("platform/android", "*.h"),
         ],
-        prefix = "fabric/textlayoutmanager",
+        prefix = "react/textlayoutmanager",
     ),
     fbandroid_headers = subdir_glob(
         [
@@ -69,7 +73,7 @@ rn_xplat_cxx_library(
         [
             ("platform/ios", "*.h"),
         ],
-        prefix = "fabric/textlayoutmanager",
+        prefix = "react/textlayoutmanager",
     ),
     ios_frameworks = [
         "$SDKROOT/System/Library/Frameworks/CoreGraphics.framework",
@@ -107,6 +111,7 @@ rn_xplat_cxx_library(
         react_native_xplat_target("fabric/core:core"),
         react_native_xplat_target("fabric/debug:debug"),
         react_native_xplat_target("fabric/graphics:graphics"),
+        react_native_xplat_target("fabric/uimanager:uimanager"),
     ],
 )
 
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
index fd98bfa6b708df..251b81314bcfef 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
+++ b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,26 +7,64 @@
 
 #include "TextLayoutManager.h"
 
+#include <react/attributedstring/conversions.h>
+#include <react/jni/ReadableNativeMap.h>
+
+using namespace facebook::jni;
+
 namespace facebook {
 namespace react {
 
-TextLayoutManager::TextLayoutManager() {
-}
-
-TextLayoutManager::~TextLayoutManager() {
-}
+TextLayoutManager::~TextLayoutManager() {}
 
 void *TextLayoutManager::getNativeTextLayoutManager() const {
   return self_;
 }
 
 Size TextLayoutManager::measure(
-  AttributedString attributedString,
-  ParagraphAttributes paragraphAttributes,
-  LayoutConstraints layoutConstraints
-) const {
-  // Not implemented.
-  return {};
+    Tag reactTag,
+    AttributedString attributedString,
+    ParagraphAttributes paragraphAttributes,
+    LayoutConstraints layoutConstraints) const {
+  const jni::global_ref<jobject> &fabricUIManager =
+      contextContainer_->getInstance<jni::global_ref<jobject>>(
+          "FabricUIManager");
+
+  auto clazz =
+      jni::findClassStatic("com/facebook/fbreact/fabric/FabricUIManager");
+  static auto measure = clazz->getMethod<JArrayFloat::javaobject(
+      jint,
+      jstring,
+      ReadableNativeMap::javaobject,
+      ReadableNativeMap::javaobject,
+      jint,
+      jint,
+      jint,
+      jint)>("measure");
+
+  auto minimumSize = layoutConstraints.minimumSize;
+  auto maximumSize = layoutConstraints.maximumSize;
+  int minWidth = (int)minimumSize.width;
+  int minHeight = (int)minimumSize.height;
+  int maxWidth = (int)maximumSize.width;
+  int maxHeight = (int)maximumSize.height;
+  local_ref<JString> componentName = make_jstring("RCTText");
+  auto values = measure(
+      fabricUIManager,
+      reactTag,
+      componentName.get(),
+      ReadableNativeMap::newObjectCxxArgs(toDynamic(attributedString)).get(),
+      ReadableNativeMap::newObjectCxxArgs(toDynamic(paragraphAttributes)).get(),
+      minWidth,
+      maxWidth,
+      minHeight,
+      maxHeight);
+
+  std::vector<float> indices;
+  indices.resize(values->size());
+  values->getRegion(0, values->size(), indices.data());
+
+  return {indices[0], indices[1]};
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.h b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.h
index 9da164f30f84ce..31a5479d725b78 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,10 @@
 
 #include <memory>
 
-#include <fabric/attributedstring/AttributedString.h>
-#include <fabric/attributedstring/ParagraphAttributes.h>
-#include <fabric/core/LayoutConstraints.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/ParagraphAttributes.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/uimanager/ContextContainer.h>
 
 namespace facebook {
 namespace react {
@@ -24,20 +25,19 @@ using SharedTextLayoutManager = std::shared_ptr<const TextLayoutManager>;
  * Cross platform facade for Android-specific TextLayoutManager.
  */
 class TextLayoutManager {
-
-public:
-
-  TextLayoutManager();
+ public:
+  TextLayoutManager(const SharedContextContainer &contextContainer)
+      : contextContainer_(contextContainer){};
   ~TextLayoutManager();
 
   /*
    * Measures `attributedString` using native text rendering infrastructure.
    */
   Size measure(
-    AttributedString attributedString,
-    ParagraphAttributes paragraphAttributes,
-    LayoutConstraints layoutConstraints
-  ) const;
+      Tag reactTag,
+      AttributedString attributedString,
+      ParagraphAttributes paragraphAttributes,
+      LayoutConstraints layoutConstraints) const;
 
   /*
    * Returns an opaque pointer to platform-specific TextLayoutManager.
@@ -45,9 +45,10 @@ class TextLayoutManager {
    */
   void *getNativeTextLayoutManager() const;
 
-private:
-  
+ private:
   void *self_;
+
+  SharedContextContainer contextContainer_;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.h
index 8372a0d2be9183..1ec019ef673b15 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.m b/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.m
index 5002dddd8a425c..36938fa15e1198 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.m
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/NSTextStorage+FontScaling.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,8 +8,8 @@
 #import "NSTextStorage+FontScaling.h"
 
 typedef NS_OPTIONS(NSInteger, RCTTextSizeComparisonOptions) {
-  RCTTextSizeComparisonSmaller     = 1 << 0,
-  RCTTextSizeComparisonLarger      = 1 << 1,
+  RCTTextSizeComparisonSmaller = 1 << 0,
+  RCTTextSizeComparisonLarger = 1 << 1,
   RCTTextSizeComparisonWithinRange = 1 << 2,
 };
 
@@ -17,9 +17,8 @@ @implementation NSTextStorage (FontScaling)
 
 - (void)scaleFontSizeToFitSize:(CGSize)size
                minimumFontSize:(CGFloat)minimumFontSize
-               maximumFontSize:(CGFloat)maximumFontSize
-{
-  CGFloat bottomRatio = 1.0/128.0;
+               maximumFontSize:(CGFloat)maximumFontSize {
+  CGFloat bottomRatio = 1.0 / 128.0;
   CGFloat topRatio = 128.0;
   CGFloat ratio = 1.0;
 
@@ -32,13 +31,11 @@ - (void)scaleFontSizeToFitSize:(CGSize)size
                  minimumFontSize:minimumFontSize
                  maximumFontSize:maximumFontSize];
 
-    RCTTextSizeComparisonOptions comparsion =
-      [self compareToSize:size thresholdRatio:0.01];
+    RCTTextSizeComparisonOptions comparsion = [self compareToSize:size
+                                                   thresholdRatio:0.01];
 
-    if (
-        (comparsion & RCTTextSizeComparisonWithinRange) &&
-        (comparsion & RCTTextSizeComparisonSmaller)
-    ) {
+    if ((comparsion & RCTTextSizeComparisonWithinRange) &&
+        (comparsion & RCTTextSizeComparisonSmaller)) {
       return;
     } else if (comparsion & RCTTextSizeComparisonSmaller) {
       bottomRatio = ratio;
@@ -50,11 +47,9 @@ - (void)scaleFontSizeToFitSize:(CGSize)size
     ratio = (topRatio + bottomRatio) / 2.0;
 
     CGFloat kRatioThreshold = 0.005;
-    if (
-        ABS(topRatio - bottomRatio) < kRatioThreshold ||
+    if (ABS(topRatio - bottomRatio) < kRatioThreshold ||
         ABS(topRatio - ratio) < kRatioThreshold ||
-        ABS(bottomRatio - ratio) < kRatioThreshold
-    ) {
+        ABS(bottomRatio - ratio) < kRatioThreshold) {
       [self replaceCharactersInRange:(NSRange){0, self.length}
                 withAttributedString:originalAttributedString];
 
@@ -69,9 +64,8 @@ - (void)scaleFontSizeToFitSize:(CGSize)size
   }
 }
 
-
-- (RCTTextSizeComparisonOptions)compareToSize:(CGSize)size thresholdRatio:(CGFloat)thresholdRatio
-{
+- (RCTTextSizeComparisonOptions)compareToSize:(CGSize)size
+                               thresholdRatio:(CGFloat)thresholdRatio {
   NSLayoutManager *layoutManager = self.layoutManagers.firstObject;
   NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
 
@@ -79,27 +73,29 @@ - (RCTTextSizeComparisonOptions)compareToSize:(CGSize)size thresholdRatio:(CGFlo
 
   // Does it fit the text container?
   NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer];
-  NSRange truncatedGlyphRange = [layoutManager truncatedGlyphRangeInLineFragmentForGlyphAtIndex:glyphRange.length - 1];
+  NSRange truncatedGlyphRange = [layoutManager
+      truncatedGlyphRangeInLineFragmentForGlyphAtIndex:glyphRange.length - 1];
 
   if (truncatedGlyphRange.location != NSNotFound) {
     return RCTTextSizeComparisonLarger;
   }
 
-  CGSize measuredSize = [layoutManager usedRectForTextContainer:textContainer].size;
+  CGSize measuredSize =
+      [layoutManager usedRectForTextContainer:textContainer].size;
 
   // Does it fit the size?
   BOOL fitsSize =
-    size.width >= measuredSize.width &&
-    size.height >= measuredSize.height;
+      size.width >= measuredSize.width && size.height >= measuredSize.height;
 
   CGSize thresholdSize = (CGSize){
-    size.width * thresholdRatio,
-    size.height * thresholdRatio,
+      size.width * thresholdRatio,
+      size.height * thresholdRatio,
   };
 
   RCTTextSizeComparisonOptions result = 0;
 
-  result |= (fitsSize) ? RCTTextSizeComparisonSmaller : RCTTextSizeComparisonLarger;
+  result |=
+      (fitsSize) ? RCTTextSizeComparisonSmaller : RCTTextSizeComparisonLarger;
 
   if (ABS(measuredSize.width - size.width) < thresholdSize.width) {
     result = result | RCTTextSizeComparisonWithinRange;
@@ -110,26 +106,28 @@ - (RCTTextSizeComparisonOptions)compareToSize:(CGSize)size thresholdRatio:(CGFlo
 
 - (void)scaleFontSizeWithRatio:(CGFloat)ratio
                minimumFontSize:(CGFloat)minimumFontSize
-               maximumFontSize:(CGFloat)maximumFontSize
-{
+               maximumFontSize:(CGFloat)maximumFontSize {
   [self beginEditing];
 
-  [self enumerateAttribute:NSFontAttributeName
-                   inRange:(NSRange){0, self.length}
-                   options:NSAttributedStringEnumerationLongestEffectiveRangeNotRequired
-                usingBlock:
-    ^(UIFont *_Nullable font, NSRange range, BOOL *_Nonnull stop) {
-      if (!font) {
-        return;
-      }
-
-      CGFloat fontSize = MAX(MIN(font.pointSize * ratio, maximumFontSize), minimumFontSize);
-
-      [self addAttribute:NSFontAttributeName
-                   value:[font fontWithSize:fontSize]
-                   range:range];
-    }
-  ];
+  [self
+      enumerateAttribute:NSFontAttributeName
+                 inRange:(NSRange){0, self.length}
+                 options:
+                     NSAttributedStringEnumerationLongestEffectiveRangeNotRequired
+              usingBlock:^(
+                  UIFont *_Nullable font, NSRange range, BOOL *_Nonnull stop) {
+                if (!font) {
+                  return;
+                }
+
+                CGFloat fontSize =
+                    MAX(MIN(font.pointSize * ratio, maximumFontSize),
+                        minimumFontSize);
+
+                [self addAttribute:NSFontAttributeName
+                             value:[font fontWithSize:fontSize]
+                             range:range];
+              }];
 
   [self endEditing];
 }
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.h
index 32b0a387d85601..87cc2b55f9d3ea 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,17 +7,23 @@
 
 #import <UIKit/UIKit.h>
 
-#include <fabric/attributedstring/AttributedString.h>
-#include <fabric/attributedstring/TextAttributes.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/TextAttributes.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
-NSString *const RCTAttributedStringIsHighlightedAttributeName = @"IsHighlighted";
-NSString *const RCTAttributedStringReactTagAttributeName = @"ReactTag";
+NSString *const RCTAttributedStringIsHighlightedAttributeName =
+    @"IsHighlighted";
+NSString *const RCTAttributedStringParentShadowNode = @"ParentShadowNode";
 
 /**
  * Constructs ready-to-render `NSAttributedString` by given `AttributedString`.
  */
-NSAttributedString *RCTNSAttributedStringFromAttributedString(const facebook::react::AttributedString &attributedString);
+NSAttributedString *RCTNSAttributedStringFromAttributedString(
+    const facebook::react::AttributedString &attributedString);
+
+@interface RCTSharedShadowNodeWrapper : NSObject
+@property(nonatomic, assign) facebook::react::SharedShadowNode node;
+@end
 
 NS_ASSUME_NONNULL_END
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.mm b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.mm
index f0e1121889030d..52d205fb8df0f0 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.mm
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTAttributedTextUtils.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,55 +7,80 @@
 
 #import "RCTAttributedTextUtils.h"
 
-#include <fabric/core/LayoutableShadowNode.h>
-#include <fabric/textlayoutmanager/RCTFontProperties.h>
-#include <fabric/textlayoutmanager/RCTFontUtils.h>
-#include <fabric/textlayoutmanager/RCTTextPrimitivesConversions.h>
+#include <react/core/LayoutableShadowNode.h>
+#include <react/textlayoutmanager/RCTFontProperties.h>
+#include <react/textlayoutmanager/RCTFontUtils.h>
+#include <react/textlayoutmanager/RCTTextPrimitivesConversions.h>
 
-inline static UIFont *RCTEffectiveFontFromTextAttributes(const TextAttributes &textAttributes) {
-  NSString *fontFamily = [NSString stringWithCString:textAttributes.fontFamily.c_str()
-                                            encoding:NSUTF8StringEncoding];
+@implementation RCTSharedShadowNodeWrapper
+@end
+
+inline static UIFont *RCTEffectiveFontFromTextAttributes(
+    const TextAttributes &textAttributes) {
+  NSString *fontFamily =
+      [NSString stringWithCString:textAttributes.fontFamily.c_str()
+                         encoding:NSUTF8StringEncoding];
 
   RCTFontProperties fontProperties;
   fontProperties.family = fontFamily;
   fontProperties.size = textAttributes.fontSize;
-  fontProperties.style = textAttributes.fontStyle.hasValue() ? RCTFontStyleFromFontStyle(textAttributes.fontStyle.value()) : RCTFontStyleUndefined;
-  fontProperties.variant = textAttributes.fontVariant.hasValue() ? RCTFontVariantFromFontVariant(textAttributes.fontVariant.value()) : RCTFontVariantDefault;
-  fontProperties.weight = textAttributes.fontWeight.hasValue() ? CGFloat(textAttributes.fontWeight.value()) : NAN;
+  fontProperties.style = textAttributes.fontStyle.hasValue()
+      ? RCTFontStyleFromFontStyle(textAttributes.fontStyle.value())
+      : RCTFontStyleUndefined;
+  fontProperties.variant = textAttributes.fontVariant.hasValue()
+      ? RCTFontVariantFromFontVariant(textAttributes.fontVariant.value())
+      : RCTFontVariantDefault;
+  fontProperties.weight = textAttributes.fontWeight.hasValue()
+      ? CGFloat(textAttributes.fontWeight.value())
+      : NAN;
   fontProperties.sizeMultiplier = textAttributes.fontSizeMultiplier;
 
   return RCTFontWithFontProperties(fontProperties);
 }
 
-inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const TextAttributes &textAttributes) {
-  return textAttributes.allowFontScaling.value_or(true) && !isnan(textAttributes.fontSizeMultiplier) ? textAttributes.fontSizeMultiplier : 1.0;
+inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(
+    const TextAttributes &textAttributes) {
+  return textAttributes.allowFontScaling.value_or(true) &&
+          !isnan(textAttributes.fontSizeMultiplier)
+      ? textAttributes.fontSizeMultiplier
+      : 1.0;
 }
 
-inline static UIColor *RCTEffectiveForegroundColorFromTextAttributes(const TextAttributes &textAttributes) {
-  UIColor *effectiveForegroundColor = RCTUIColorFromSharedColor(textAttributes.foregroundColor) ?: [UIColor blackColor];
+inline static UIColor *RCTEffectiveForegroundColorFromTextAttributes(
+    const TextAttributes &textAttributes) {
+  UIColor *effectiveForegroundColor =
+      RCTUIColorFromSharedColor(textAttributes.foregroundColor)
+      ?: [UIColor blackColor];
 
   if (!isnan(textAttributes.opacity)) {
-    effectiveForegroundColor =
-      [effectiveForegroundColor colorWithAlphaComponent:CGColorGetAlpha(effectiveForegroundColor.CGColor) * textAttributes.opacity];
+    effectiveForegroundColor = [effectiveForegroundColor
+        colorWithAlphaComponent:CGColorGetAlpha(
+                                    effectiveForegroundColor.CGColor) *
+        textAttributes.opacity];
   }
 
   return effectiveForegroundColor;
 }
 
-inline static UIColor *RCTEffectiveBackgroundColorFromTextAttributes(const TextAttributes &textAttributes) {
-  UIColor *effectiveBackgroundColor = RCTUIColorFromSharedColor(textAttributes.backgroundColor);
+inline static UIColor *RCTEffectiveBackgroundColorFromTextAttributes(
+    const TextAttributes &textAttributes) {
+  UIColor *effectiveBackgroundColor =
+      RCTUIColorFromSharedColor(textAttributes.backgroundColor);
 
   if (effectiveBackgroundColor && !isnan(textAttributes.opacity)) {
-    effectiveBackgroundColor =
-      [effectiveBackgroundColor colorWithAlphaComponent:CGColorGetAlpha(effectiveBackgroundColor.CGColor) * textAttributes.opacity];
+    effectiveBackgroundColor = [effectiveBackgroundColor
+        colorWithAlphaComponent:CGColorGetAlpha(
+                                    effectiveBackgroundColor.CGColor) *
+        textAttributes.opacity];
   }
 
   return effectiveBackgroundColor ?: [UIColor clearColor];
 }
 
-static NSDictionary<NSAttributedStringKey, id> *RCTNSTextAttributesFromTextAttributes(const TextAttributes &textAttributes) {
+static NSDictionary<NSAttributedStringKey, id> *
+RCTNSTextAttributesFromTextAttributes(const TextAttributes &textAttributes) {
   NSMutableDictionary<NSAttributedStringKey, id> *attributes =
-    [NSMutableDictionary dictionaryWithCapacity:10];
+      [NSMutableDictionary dictionaryWithCapacity:10];
 
   // Font
   UIFont *font = RCTEffectiveFontFromTextAttributes(textAttributes);
@@ -64,14 +89,16 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
   }
 
   // Colors
-  UIColor *effectiveForegroundColor = RCTEffectiveForegroundColorFromTextAttributes(textAttributes);
+  UIColor *effectiveForegroundColor =
+      RCTEffectiveForegroundColorFromTextAttributes(textAttributes);
 
   if (textAttributes.foregroundColor || !isnan(textAttributes.opacity)) {
     attributes[NSForegroundColorAttributeName] = effectiveForegroundColor;
   }
 
   if (textAttributes.backgroundColor || !isnan(textAttributes.opacity)) {
-    attributes[NSBackgroundColorAttributeName] = RCTEffectiveBackgroundColorFromTextAttributes(textAttributes);
+    attributes[NSBackgroundColorAttributeName] =
+        RCTEffectiveBackgroundColorFromTextAttributes(textAttributes);
   }
 
   // Kerning
@@ -83,8 +110,10 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
   NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
   BOOL isParagraphStyleUsed = NO;
   if (textAttributes.alignment.hasValue()) {
-    TextAlignment textAlignment = textAttributes.alignment.value_or(TextAlignment::Natural);
-    if (textAttributes.layoutDirection.value_or(LayoutDirection::LeftToRight) == LayoutDirection::RightToLeft) {
+    TextAlignment textAlignment =
+        textAttributes.alignment.value_or(TextAlignment::Natural);
+    if (textAttributes.layoutDirection.value_or(LayoutDirection::LeftToRight) ==
+        LayoutDirection::RightToLeft) {
       if (textAlignment == TextAlignment::Right) {
         textAlignment = TextAlignment::Left;
       } else if (textAlignment == TextAlignment::Left) {
@@ -93,19 +122,20 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
     }
 
     paragraphStyle.alignment =
-      RCTNSTextAlignmentFromTextAlignment(textAlignment);
+        RCTNSTextAlignmentFromTextAlignment(textAlignment);
     isParagraphStyleUsed = YES;
   }
 
   if (textAttributes.baseWritingDirection.hasValue()) {
     paragraphStyle.baseWritingDirection =
-      RCTNSWritingDirectionFromWritingDirection(textAttributes.baseWritingDirection.value());
+        RCTNSWritingDirectionFromWritingDirection(
+            textAttributes.baseWritingDirection.value());
     isParagraphStyleUsed = YES;
   }
 
   if (!isnan(textAttributes.lineHeight)) {
-    CGFloat lineHeight =
-      textAttributes.lineHeight * RCTEffectiveFontSizeMultiplierFromTextAttributes(textAttributes);
+    CGFloat lineHeight = textAttributes.lineHeight *
+        RCTEffectiveFontSizeMultiplierFromTextAttributes(textAttributes);
     paragraphStyle.minimumLineHeight = lineHeight;
     paragraphStyle.maximumLineHeight = lineHeight;
     isParagraphStyleUsed = YES;
@@ -116,21 +146,23 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
   }
 
   // Decoration
-  if (textAttributes.textDecorationLineType.value_or(TextDecorationLineType::None) != TextDecorationLineType::None) {
+  if (textAttributes.textDecorationLineType.value_or(
+          TextDecorationLineType::None) != TextDecorationLineType::None) {
     auto textDecorationLineType = textAttributes.textDecorationLineType.value();
 
-    NSUnderlineStyle style =
-      RCTNSUnderlineStyleFromStyleAndPattern(
-        textAttributes.textDecorationLineStyle.value_or(TextDecorationLineStyle::Single),
-        textAttributes.textDecorationLinePattern.value_or(TextDecorationLinePattern::Solid)
-      );
+    NSUnderlineStyle style = RCTNSUnderlineStyleFromStyleAndPattern(
+        textAttributes.textDecorationLineStyle.value_or(
+            TextDecorationLineStyle::Single),
+        textAttributes.textDecorationLinePattern.value_or(
+            TextDecorationLinePattern::Solid));
 
-    UIColor *textDecorationColor = RCTUIColorFromSharedColor(textAttributes.textDecorationColor);
+    UIColor *textDecorationColor =
+        RCTUIColorFromSharedColor(textAttributes.textDecorationColor);
 
     // Underline
     if (textDecorationLineType == TextDecorationLineType::Underline ||
-        textDecorationLineType == TextDecorationLineType::UnderlineStrikethrough) {
-
+        textDecorationLineType ==
+            TextDecorationLineType::UnderlineStrikethrough) {
       attributes[NSUnderlineStyleAttributeName] = @(style);
 
       if (textDecorationColor) {
@@ -140,8 +172,8 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
 
     // Strikethrough
     if (textDecorationLineType == TextDecorationLineType::Strikethrough ||
-        textDecorationLineType == TextDecorationLineType::UnderlineStrikethrough) {
-
+        textDecorationLineType ==
+            TextDecorationLineType::UnderlineStrikethrough) {
       attributes[NSStrikethroughStyleAttributeName] = @(style);
 
       if (textDecorationColor) {
@@ -154,9 +186,11 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
   if (textAttributes.textShadowOffset.hasValue()) {
     auto textShadowOffset = textAttributes.textShadowOffset.value();
     NSShadow *shadow = [NSShadow new];
-    shadow.shadowOffset = CGSize {textShadowOffset.width, textShadowOffset.height};
+    shadow.shadowOffset =
+        CGSize{textShadowOffset.width, textShadowOffset.height};
     shadow.shadowBlurRadius = textAttributes.textShadowRadius;
-    shadow.shadowColor = RCTUIColorFromSharedColor(textAttributes.textShadowColor);
+    shadow.shadowColor =
+        RCTUIColorFromSharedColor(textAttributes.textShadowColor);
     attributes[NSShadowAttributeName] = shadow;
   }
 
@@ -168,8 +202,10 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
   return [attributes copy];
 }
 
-NSAttributedString *RCTNSAttributedStringFromAttributedString(const AttributedString &attributedString) {
-  NSMutableAttributedString *nsAttributedString = [[NSMutableAttributedString alloc] init];
+NSAttributedString *RCTNSAttributedStringFromAttributedString(
+    const AttributedString &attributedString) {
+  NSMutableAttributedString *nsAttributedString =
+      [[NSMutableAttributedString alloc] init];
 
   [nsAttributedString beginEditing];
 
@@ -177,48 +213,51 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
     NSAttributedString *nsAttributedStringFragment;
 
     auto layoutableShadowNode =
-      std::dynamic_pointer_cast<const LayoutableShadowNode>(fragment.shadowNode);
+        std::dynamic_pointer_cast<const LayoutableShadowNode>(
+            fragment.shadowNode);
 
     if (layoutableShadowNode) {
       auto layoutMetrics = layoutableShadowNode->getLayoutMetrics();
-      CGRect bounds = {
-        .origin = {
-          .x = layoutMetrics.frame.origin.x,
-          .y = layoutMetrics.frame.origin.y
-        },
-        .size = {
-          .width = layoutMetrics.frame.size.width,
-          .height = layoutMetrics.frame.size.height
-        }
-      };
+      CGRect bounds = {.origin = {.x = layoutMetrics.frame.origin.x,
+                                  .y = layoutMetrics.frame.origin.y},
+                       .size = {.width = layoutMetrics.frame.size.width,
+                                .height = layoutMetrics.frame.size.height}};
 
       NSTextAttachment *attachment = [NSTextAttachment new];
       attachment.bounds = bounds;
 
-      nsAttributedStringFragment = [NSAttributedString attributedStringWithAttachment:attachment];
+      nsAttributedStringFragment =
+          [NSAttributedString attributedStringWithAttachment:attachment];
     } else {
-      NSString *string =
-        [NSString stringWithCString:fragment.string.c_str()
-                           encoding:NSUTF8StringEncoding];
+      NSString *string = [NSString stringWithCString:fragment.string.c_str()
+                                            encoding:NSUTF8StringEncoding];
 
-      nsAttributedStringFragment =
-        [[NSAttributedString alloc] initWithString:string
-                                        attributes:RCTNSTextAttributesFromTextAttributes(fragment.textAttributes)];
+      nsAttributedStringFragment = [[NSAttributedString alloc]
+          initWithString:string
+              attributes:RCTNSTextAttributesFromTextAttributes(
+                             fragment.textAttributes)];
     }
 
     NSMutableAttributedString *nsMutableAttributedStringFragment =
-      [[NSMutableAttributedString alloc] initWithAttributedString:nsAttributedStringFragment];
+        [[NSMutableAttributedString alloc]
+            initWithAttributedString:nsAttributedStringFragment];
+
+    if (fragment.parentShadowNode) {
+      RCTSharedShadowNodeWrapper *parentShadowNode =
+          [RCTSharedShadowNodeWrapper new];
+      parentShadowNode.node = fragment.parentShadowNode;
 
-    if (fragment.shadowNode) {
-      NSDictionary<NSAttributedStringKey, id> *additionalTextAttributes = @{
-        RCTAttributedStringReactTagAttributeName: @(fragment.shadowNode->getTag())
-      };
+      NSDictionary<NSAttributedStringKey, id> *additionalTextAttributes =
+          @{RCTAttributedStringParentShadowNode : parentShadowNode};
 
-      [nsMutableAttributedStringFragment setAttributes:additionalTextAttributes
-                                                 range:NSMakeRange(0, nsMutableAttributedStringFragment.length)];
+      [nsMutableAttributedStringFragment
+          addAttributes:additionalTextAttributes
+                  range:NSMakeRange(
+                            0, nsMutableAttributedStringFragment.length)];
     }
 
-    [nsAttributedString appendAttributedString:nsMutableAttributedStringFragment];
+    [nsAttributedString
+        appendAttributedString:nsMutableAttributedStringFragment];
   }
 
   [nsAttributedString endEditing];
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontProperties.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontProperties.h
index 9f8680b47a4a56..c4323c4a1f9bf6 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontProperties.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontProperties.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.h
index 084a2b24dd0b45..3740072e5d6a11 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,7 +7,7 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/textlayoutmanager/RCTFontProperties.h>
+#import <react/textlayoutmanager/RCTFontProperties.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.mm b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.mm
index 954051f864bd3a..dfe13ff861ee31 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.mm
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTFontUtils.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -17,7 +17,7 @@ static RCTFontProperties RCTDefaultFontProperties() {
   dispatch_once(&onceToken, ^{
     defaultFontProperties.size = 14;
     defaultFontProperties.family =
-      [UIFont systemFontOfSize:defaultFontProperties.size].familyName;
+        [UIFont systemFontOfSize:defaultFontProperties.size].familyName;
     defaultFontProperties.style = RCTFontStyleNormal;
     defaultFontProperties.variant = RCTFontVariantDefault;
     defaultFontProperties.sizeMultiplier = 1.0;
@@ -26,24 +26,39 @@ static RCTFontProperties RCTDefaultFontProperties() {
   return defaultFontProperties;
 }
 
-static RCTFontProperties RCTResolveFontProperties(RCTFontProperties fontProperties) {
+static RCTFontProperties RCTResolveFontProperties(
+    RCTFontProperties fontProperties) {
   RCTFontProperties defaultFontProperties = RCTDefaultFontProperties();
-  fontProperties.family = fontProperties.family.length && ![fontProperties.family isEqualToString:@"System"] ? fontProperties.family : defaultFontProperties.family;
-  fontProperties.size = !isnan(fontProperties.size) ? fontProperties.size : defaultFontProperties.size;
-  fontProperties.weight = !isnan(fontProperties.weight) ? fontProperties.weight : defaultFontProperties.weight;
-  fontProperties.style = fontProperties.style != RCTFontStyleUndefined  ? fontProperties.style : defaultFontProperties.style;
-  fontProperties.variant = fontProperties.variant != RCTFontVariantUndefined  ? fontProperties.variant : defaultFontProperties.variant;
+  fontProperties.family = fontProperties.family.length &&
+          ![fontProperties.family isEqualToString:@"System"]
+      ? fontProperties.family
+      : defaultFontProperties.family;
+  fontProperties.size = !isnan(fontProperties.size)
+      ? fontProperties.size
+      : defaultFontProperties.size;
+  fontProperties.weight = !isnan(fontProperties.weight)
+      ? fontProperties.weight
+      : defaultFontProperties.weight;
+  fontProperties.style = fontProperties.style != RCTFontStyleUndefined
+      ? fontProperties.style
+      : defaultFontProperties.style;
+  fontProperties.variant = fontProperties.variant != RCTFontVariantUndefined
+      ? fontProperties.variant
+      : defaultFontProperties.variant;
   return fontProperties;
 }
 
 static UIFontWeight RCTGetFontWeight(UIFont *font) {
-  NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
+  NSDictionary *traits =
+      [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
   return [traits[UIFontWeightTrait] doubleValue];
 }
 
 static RCTFontStyle RCTGetFontStyle(UIFont *font) {
-  NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
-  UIFontDescriptorSymbolicTraits symbolicTraits = [traits[UIFontSymbolicTrait] unsignedIntValue];
+  NSDictionary *traits =
+      [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
+  UIFontDescriptorSymbolicTraits symbolicTraits =
+      [traits[UIFontSymbolicTrait] unsignedIntValue];
   if (symbolicTraits & UIFontDescriptorTraitItalic) {
     return RCTFontStyleItalic;
   }
@@ -61,25 +76,26 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
   // and UIKit uses the same numerical notation, we have to use exact
   // `UIFontWeight*` constants to make it work properly (because
   // float values comparison is tricky).
-  static UIFontWeight weights[] = {
-    /* ~100 */ UIFontWeightUltraLight,
-    /* ~200 */ UIFontWeightThin,
-    /* ~300 */ UIFontWeightLight,
-    /* ~400 */ UIFontWeightRegular,
-    /* ~500 */ UIFontWeightMedium,
-    /* ~600 */ UIFontWeightSemibold,
-    /* ~700 */ UIFontWeightBold,
-    /* ~800 */ UIFontWeightHeavy,
-    /* ~900 */ UIFontWeightBlack
-  };
+  static UIFontWeight weights[] = {/* ~100 */ UIFontWeightUltraLight,
+                                   /* ~200 */ UIFontWeightThin,
+                                   /* ~300 */ UIFontWeightLight,
+                                   /* ~400 */ UIFontWeightRegular,
+                                   /* ~500 */ UIFontWeightMedium,
+                                   /* ~600 */ UIFontWeightSemibold,
+                                   /* ~700 */ UIFontWeightBold,
+                                   /* ~800 */ UIFontWeightHeavy,
+                                   /* ~900 */ UIFontWeightBlack};
   return weights[std::llround((fontWeight / 100) - 1)];
 }
 
-static UIFont *RCTDefaultFontWithFontProperties(RCTFontProperties fontProperties) {
+static UIFont *RCTDefaultFontWithFontProperties(
+    RCTFontProperties fontProperties) {
   static NSCache *fontCache;
   static std::mutex fontCacheMutex;
 
-  NSString *cacheKey = [NSString stringWithFormat:@"%.1f/%.2f", fontProperties.size, fontProperties.weight];
+  NSString *cacheKey = [NSString stringWithFormat:@"%.1f/%.2f",
+                                                  fontProperties.size,
+                                                  fontProperties.weight];
   UIFont *font;
 
   {
@@ -91,17 +107,21 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
   }
 
   if (!font) {
-    font = [UIFont systemFontOfSize:fontProperties.size
-                             weight:RCTUIFontWeightFromFloat(fontProperties.weight)];
+    font = [UIFont
+        systemFontOfSize:fontProperties.size
+                  weight:RCTUIFontWeightFromFloat(fontProperties.weight)];
 
     if (fontProperties.variant == RCTFontStyleItalic) {
       UIFontDescriptor *fontDescriptor = [font fontDescriptor];
-      UIFontDescriptorSymbolicTraits symbolicTraits = fontDescriptor.symbolicTraits;
+      UIFontDescriptorSymbolicTraits symbolicTraits =
+          fontDescriptor.symbolicTraits;
 
       symbolicTraits |= UIFontDescriptorTraitItalic;
 
-      fontDescriptor = [fontDescriptor fontDescriptorWithSymbolicTraits:symbolicTraits];
-      font = [UIFont fontWithDescriptor:fontDescriptor size:fontProperties.size];
+      fontDescriptor =
+          [fontDescriptor fontDescriptorWithSymbolicTraits:symbolicTraits];
+      font = [UIFont fontWithDescriptor:fontDescriptor
+                                   size:fontProperties.size];
     }
 
     {
@@ -117,7 +137,8 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
   RCTFontProperties defaultFontProperties = RCTDefaultFontProperties();
   fontProperties = RCTResolveFontProperties(fontProperties);
 
-  CGFloat effectiveFontSize = fontProperties.sizeMultiplier * fontProperties.size;
+  CGFloat effectiveFontSize =
+      fontProperties.sizeMultiplier * fontProperties.size;
   UIFont *font;
   if ([fontProperties.family isEqualToString:defaultFontProperties.family]) {
     // Handle system font as special case. This ensures that we preserve
@@ -125,7 +146,7 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
     font = RCTDefaultFontWithFontProperties(fontProperties);
   } else {
     NSArray<NSString *> *fontNames =
-      [UIFont fontNamesForFamilyName:fontProperties.family];
+        [UIFont fontNamesForFamilyName:fontProperties.family];
 
     if (fontNames.count == 0) {
       // Gracefully handle being given a font name rather than font family, for
@@ -134,7 +155,9 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
 
       if (!font) {
         // Failback to system font.
-        font = [UIFont systemFontOfSize:effectiveFontSize weight:RCTUIFontWeightFromFloat(fontProperties.weight)];
+        font = [UIFont
+            systemFontOfSize:effectiveFontSize
+                      weight:RCTUIFontWeightFromFloat(fontProperties.weight)];
       }
     } else {
       // Get the closest font that matches the given weight for the fontFamily
@@ -147,15 +170,17 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
         }
 
         CGFloat testWeight = RCTGetFontWeight(fontMatch);
-        if (ABS(testWeight - fontProperties.weight) < ABS(closestWeight - fontProperties.weight)) {
+        if (ABS(testWeight - fontProperties.weight) <
+            ABS(closestWeight - fontProperties.weight)) {
           font = fontMatch;
           closestWeight = testWeight;
         }
       }
 
       if (!font) {
-        // If we still don't have a match at least return the first font in the fontFamily
-        // This is to support built-in font Zapfino and other custom single font families like Impact
+        // If we still don't have a match at least return the first font in the
+        // fontFamily This is to support built-in font Zapfino and other custom
+        // single font families like Impact
         font = [UIFont fontWithName:fontNames[0] size:effectiveFontSize];
       }
     }
@@ -165,7 +190,9 @@ static UIFontWeight RCTUIFontWeightFromFloat(CGFloat fontWeight) {
   if (fontProperties.variant != RCTFontVariantDefault) {
     NSArray *fontFeatures = RCTFontFeatures(fontProperties.variant);
     UIFontDescriptor *fontDescriptor =
-      [font.fontDescriptor fontDescriptorByAddingAttributes:@{UIFontDescriptorFeatureSettingsAttribute: fontFeatures}];
+        [font.fontDescriptor fontDescriptorByAddingAttributes:@{
+          UIFontDescriptorFeatureSettingsAttribute : fontFeatures
+        }];
     font = [UIFont fontWithDescriptor:fontDescriptor size:effectiveFontSize];
   }
 
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.h
index 8a745aa4a60b9b..510775fd0825be 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,10 +7,10 @@
 
 #import <UIKit/UIKit.h>
 
-#import <fabric/core/LayoutConstraints.h>
-#import <fabric/graphics/Geometry.h>
-#import <fabric/attributedstring/AttributedString.h>
-#import <fabric/attributedstring/ParagraphAttributes.h>
+#import <react/attributedstring/AttributedString.h>
+#import <react/attributedstring/ParagraphAttributes.h>
+#import <react/core/LayoutConstraints.h>
+#import <react/graphics/Geometry.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -19,14 +19,28 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @interface RCTTextLayoutManager : NSObject
 
-- (facebook::react::Size)measureWithAttributedString:(facebook::react::AttributedString)attributedString
-                                 paragraphAttributes:(facebook::react::ParagraphAttributes)paragraphAttributes
-                                   layoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints;
+- (facebook::react::Size)
+    measureWithAttributedString:
+        (facebook::react::AttributedString)attributedString
+            paragraphAttributes:
+                (facebook::react::ParagraphAttributes)paragraphAttributes
+              layoutConstraints:
+                  (facebook::react::LayoutConstraints)layoutConstraints;
 
 - (void)drawAttributedString:(facebook::react::AttributedString)attributedString
-         paragraphAttributes:(facebook::react::ParagraphAttributes)paragraphAttributes
+         paragraphAttributes:
+             (facebook::react::ParagraphAttributes)paragraphAttributes
                        frame:(CGRect)frame;
 
+- (facebook::react::SharedShadowNode)
+    getParentShadowNodeWithAttributeString:
+        (facebook::react::AttributedString)attributedString
+                       paragraphAttributes:
+                           (facebook::react::ParagraphAttributes)
+                               paragraphAttributes
+                                     frame:(CGRect)frame
+                                   atPoint:(CGPoint)point;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.mm b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.mm
index 33a2fdb702d85f..0f206ceaaba4b2 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.mm
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,24 +14,31 @@
 
 @implementation RCTTextLayoutManager
 
-static NSLineBreakMode RCTNSLineBreakModeFromWritingDirection(EllipsizeMode ellipsizeMode) {
+static NSLineBreakMode RCTNSLineBreakModeFromWritingDirection(
+    EllipsizeMode ellipsizeMode) {
   switch (ellipsizeMode) {
-    case EllipsizeMode::Clip: return NSLineBreakByClipping;
-    case EllipsizeMode::Head: return NSLineBreakByTruncatingHead;
-    case EllipsizeMode::Tail: return NSLineBreakByTruncatingTail;
-    case EllipsizeMode::Middle: return NSLineBreakByTruncatingMiddle;
+    case EllipsizeMode::Clip:
+      return NSLineBreakByClipping;
+    case EllipsizeMode::Head:
+      return NSLineBreakByTruncatingHead;
+    case EllipsizeMode::Tail:
+      return NSLineBreakByTruncatingTail;
+    case EllipsizeMode::Middle:
+      return NSLineBreakByTruncatingMiddle;
   }
 }
 
-- (facebook::react::Size)measureWithAttributedString:(AttributedString)attributedString
-                                 paragraphAttributes:(ParagraphAttributes)paragraphAttributes
-                                   layoutConstraints:(LayoutConstraints)layoutConstraints
-{
-  CGSize maximumSize = CGSize {layoutConstraints.maximumSize.width, layoutConstraints.maximumSize.height};
+- (facebook::react::Size)
+    measureWithAttributedString:(AttributedString)attributedString
+            paragraphAttributes:(ParagraphAttributes)paragraphAttributes
+              layoutConstraints:(LayoutConstraints)layoutConstraints {
+  CGSize maximumSize = CGSize{layoutConstraints.maximumSize.width,
+                              layoutConstraints.maximumSize.height};
   NSTextStorage *textStorage =
-    [self _textStorageAndLayoutManagerWithAttributesString:RCTNSAttributedStringFromAttributedString(attributedString)
-                                       paragraphAttributes:paragraphAttributes
-                                                      size:maximumSize];
+      [self _textStorageAndLayoutManagerWithAttributesString:
+                RCTNSAttributedStringFromAttributedString(attributedString)
+                                         paragraphAttributes:paragraphAttributes
+                                                        size:maximumSize];
 
   NSLayoutManager *layoutManager = textStorage.layoutManagers.firstObject;
   NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
@@ -39,52 +46,58 @@ static NSLineBreakMode RCTNSLineBreakModeFromWritingDirection(EllipsizeMode elli
 
   CGSize size = [layoutManager usedRectForTextContainer:textContainer].size;
 
-  size = (CGSize){
-    MIN(size.width, maximumSize.width),
-    MIN(size.height, maximumSize.height)
-  };
+  size = (CGSize){MIN(size.width, maximumSize.width),
+                  MIN(size.height, maximumSize.height)};
 
-  return facebook::react::Size {size.width, size.height};
+  return facebook::react::Size{size.width, size.height};
 }
 
 - (void)drawAttributedString:(AttributedString)attributedString
          paragraphAttributes:(ParagraphAttributes)paragraphAttributes
-                       frame:(CGRect)frame
-{
+                       frame:(CGRect)frame {
   NSTextStorage *textStorage =
-    [self _textStorageAndLayoutManagerWithAttributesString:RCTNSAttributedStringFromAttributedString(attributedString)
-                                       paragraphAttributes:paragraphAttributes
-                                                      size:frame.size];
-   NSLayoutManager *layoutManager = textStorage.layoutManagers.firstObject;
-   NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
-
-   NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer];
-   [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:frame.origin];
-   [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:frame.origin];
+      [self _textStorageAndLayoutManagerWithAttributesString:
+                RCTNSAttributedStringFromAttributedString(attributedString)
+                                         paragraphAttributes:paragraphAttributes
+                                                        size:frame.size];
+  NSLayoutManager *layoutManager = textStorage.layoutManagers.firstObject;
+  NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
+
+  NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer];
+  [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:frame.origin];
+  [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:frame.origin];
 }
 
-- (NSTextStorage *)_textStorageAndLayoutManagerWithAttributesString:(NSAttributedString *)attributedString
-                                                paragraphAttributes:(ParagraphAttributes)paragraphAttributes
-                                                               size:(CGSize)size
-{
+- (NSTextStorage *)
+    _textStorageAndLayoutManagerWithAttributesString:
+        (NSAttributedString *)attributedString
+                                 paragraphAttributes:
+                                     (ParagraphAttributes)paragraphAttributes
+                                                size:(CGSize)size {
   NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:size];
 
   textContainer.lineFragmentPadding = 0.0; // Note, the default value is 5.
-  textContainer.lineBreakMode =
-    paragraphAttributes.maximumNumberOfLines > 0 ? RCTNSLineBreakModeFromWritingDirection(paragraphAttributes.ellipsizeMode) : NSLineBreakByClipping;
+  textContainer.lineBreakMode = paragraphAttributes.maximumNumberOfLines > 0
+      ? RCTNSLineBreakModeFromWritingDirection(
+            paragraphAttributes.ellipsizeMode)
+      : NSLineBreakByClipping;
   textContainer.maximumNumberOfLines = paragraphAttributes.maximumNumberOfLines;
 
   NSLayoutManager *layoutManager = [NSLayoutManager new];
   [layoutManager addTextContainer:textContainer];
 
   NSTextStorage *textStorage =
-    [[NSTextStorage alloc] initWithAttributedString:attributedString];
+      [[NSTextStorage alloc] initWithAttributedString:attributedString];
 
   [textStorage addLayoutManager:layoutManager];
 
   if (paragraphAttributes.adjustsFontSizeToFit) {
-    CGFloat minimumFontSize = !isnan(paragraphAttributes.minimumFontSize) ? paragraphAttributes.minimumFontSize : 4.0;
-    CGFloat maximumFontSize = !isnan(paragraphAttributes.maximumFontSize) ? paragraphAttributes.maximumFontSize : 96.0;
+    CGFloat minimumFontSize = !isnan(paragraphAttributes.minimumFontSize)
+        ? paragraphAttributes.minimumFontSize
+        : 4.0;
+    CGFloat maximumFontSize = !isnan(paragraphAttributes.maximumFontSize)
+        ? paragraphAttributes.maximumFontSize
+        : 96.0;
     [textStorage scaleFontSizeToFitSize:size
                         minimumFontSize:minimumFontSize
                         maximumFontSize:maximumFontSize];
@@ -93,4 +106,39 @@ - (NSTextStorage *)_textStorageAndLayoutManagerWithAttributesString:(NSAttribute
   return textStorage;
 }
 
+- (SharedShadowNode)
+    getParentShadowNodeWithAttributeString:(AttributedString)attributedString
+                       paragraphAttributes:
+                           (ParagraphAttributes)paragraphAttributes
+                                     frame:(CGRect)frame
+                                   atPoint:(CGPoint)point {
+  NSTextStorage *textStorage =
+      [self _textStorageAndLayoutManagerWithAttributesString:
+                RCTNSAttributedStringFromAttributedString(attributedString)
+                                         paragraphAttributes:paragraphAttributes
+                                                        size:frame.size];
+  NSLayoutManager *layoutManager = textStorage.layoutManagers.firstObject;
+  NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
+
+  CGFloat fraction;
+  NSUInteger characterIndex =
+      [layoutManager characterIndexForPoint:point
+                                   inTextContainer:textContainer
+          fractionOfDistanceBetweenInsertionPoints:&fraction];
+
+  // If the point is not before (fraction == 0.0) the first character and not
+  // after (fraction == 1.0) the last character, then the attribute is valid.
+  if (textStorage.length > 0 && (fraction > 0 || characterIndex > 0) &&
+      (fraction < 1 || characterIndex < textStorage.length - 1)) {
+    RCTSharedShadowNodeWrapper *parentShadowNode =
+        (RCTSharedShadowNodeWrapper *)[textStorage
+                 attribute:RCTAttributedStringParentShadowNode
+                   atIndex:characterIndex
+            effectiveRange:NULL];
+    return parentShadowNode.node;
+  }
+
+  return nil;
+}
+
 @end
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextPrimitivesConversions.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextPrimitivesConversions.h
index 354952d9c8335d..7880077542f8ed 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextPrimitivesConversions.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextPrimitivesConversions.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,64 +7,88 @@
 
 #import <UIKit/UIKit.h>
 
-#include <fabric/textlayoutmanager/RCTFontProperties.h>
-#include <fabric/textlayoutmanager/RCTFontUtils.h>
+#include <react/textlayoutmanager/RCTFontProperties.h>
+#include <react/textlayoutmanager/RCTFontUtils.h>
 
 using namespace facebook::react;
 
-inline static NSTextAlignment RCTNSTextAlignmentFromTextAlignment(TextAlignment textAlignment) {
+inline static NSTextAlignment RCTNSTextAlignmentFromTextAlignment(
+    TextAlignment textAlignment) {
   switch (textAlignment) {
-    case TextAlignment::Natural: return NSTextAlignmentNatural;
-    case TextAlignment::Left: return NSTextAlignmentLeft;
-    case TextAlignment::Right: return NSTextAlignmentRight;
-    case TextAlignment::Center: return NSTextAlignmentCenter;
-    case TextAlignment::Justified: return NSTextAlignmentJustified;
+    case TextAlignment::Natural:
+      return NSTextAlignmentNatural;
+    case TextAlignment::Left:
+      return NSTextAlignmentLeft;
+    case TextAlignment::Right:
+      return NSTextAlignmentRight;
+    case TextAlignment::Center:
+      return NSTextAlignmentCenter;
+    case TextAlignment::Justified:
+      return NSTextAlignmentJustified;
   }
 }
 
-inline static NSWritingDirection RCTNSWritingDirectionFromWritingDirection(WritingDirection writingDirection) {
+inline static NSWritingDirection RCTNSWritingDirectionFromWritingDirection(
+    WritingDirection writingDirection) {
   switch (writingDirection) {
-    case WritingDirection::Natural: return NSWritingDirectionNatural;
-    case WritingDirection::LeftToRight: return NSWritingDirectionLeftToRight;
-    case WritingDirection::RightToLeft: return NSWritingDirectionRightToLeft;
+    case WritingDirection::Natural:
+      return NSWritingDirectionNatural;
+    case WritingDirection::LeftToRight:
+      return NSWritingDirectionLeftToRight;
+    case WritingDirection::RightToLeft:
+      return NSWritingDirectionRightToLeft;
   }
 }
 
 inline static RCTFontStyle RCTFontStyleFromFontStyle(FontStyle fontStyle) {
   switch (fontStyle) {
-    case FontStyle::Normal: return RCTFontStyleNormal;
-    case FontStyle::Italic: return RCTFontStyleItalic;
-    case FontStyle::Oblique: return RCTFontStyleOblique;
+    case FontStyle::Normal:
+      return RCTFontStyleNormal;
+    case FontStyle::Italic:
+      return RCTFontStyleItalic;
+    case FontStyle::Oblique:
+      return RCTFontStyleOblique;
   }
 }
 
-inline static RCTFontVariant RCTFontVariantFromFontVariant(FontVariant fontVariant) {
+inline static RCTFontVariant RCTFontVariantFromFontVariant(
+    FontVariant fontVariant) {
   return (RCTFontVariant)fontVariant;
 }
 
-inline static NSUnderlineStyle RCTNSUnderlineStyleFromStyleAndPattern(TextDecorationLineStyle textDecorationLineStyle, TextDecorationLinePattern textDecorationLinePattern) {
+inline static NSUnderlineStyle RCTNSUnderlineStyleFromStyleAndPattern(
+    TextDecorationLineStyle textDecorationLineStyle,
+    TextDecorationLinePattern textDecorationLinePattern) {
   NSUnderlineStyle style = NSUnderlineStyleNone;
 
   switch (textDecorationLineStyle) {
     case TextDecorationLineStyle::Single:
-      style = NSUnderlineStyle(style | NSUnderlineStyleSingle); break;
+      style = NSUnderlineStyle(style | NSUnderlineStyleSingle);
+      break;
     case TextDecorationLineStyle::Thick:
-      style = NSUnderlineStyle(style | NSUnderlineStyleThick); break;
+      style = NSUnderlineStyle(style | NSUnderlineStyleThick);
+      break;
     case TextDecorationLineStyle::Double:
-      style = NSUnderlineStyle(style | NSUnderlineStyleDouble); break;
+      style = NSUnderlineStyle(style | NSUnderlineStyleDouble);
+      break;
   }
 
   switch (textDecorationLinePattern) {
     case TextDecorationLinePattern::Solid:
-      style = NSUnderlineStyle(style | NSUnderlinePatternSolid); break;
+      style = NSUnderlineStyle(style | NSUnderlinePatternSolid);
+      break;
     case TextDecorationLinePattern::Dash:
-      style = NSUnderlineStyle(style | NSUnderlinePatternDash); break;
+      style = NSUnderlineStyle(style | NSUnderlinePatternDash);
+      break;
     case TextDecorationLinePattern::Dot:
-      style = NSUnderlineStyle(style | NSUnderlinePatternDot); break;
+      style = NSUnderlineStyle(style | NSUnderlinePatternDot);
+      break;
     case TextDecorationLinePattern::DashDot:
-      style = NSUnderlineStyle(style | NSUnderlinePatternDashDot); break;
+      style = NSUnderlineStyle(style | NSUnderlinePatternDashDot);
+      break;
     case TextDecorationLinePattern::DashDotDot:
-      style = NSUnderlineStyle(style | NSUnderlinePatternDashDotDot); break;
+      style = NSUnderlineStyle(style | NSUnderlinePatternDashDotDot);
+      break;
   }
 
   return style;
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.h b/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.h
index dd54980ffd737e..c03970c22e1d0c 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.h
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,10 @@
 
 #include <memory>
 
-#include <fabric/attributedstring/AttributedString.h>
-#include <fabric/attributedstring/ParagraphAttributes.h>
-#include <fabric/core/LayoutConstraints.h>
+#include <react/attributedstring/AttributedString.h>
+#include <react/attributedstring/ParagraphAttributes.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/uimanager/ContextContainer.h>
 
 namespace facebook {
 namespace react {
@@ -24,18 +25,18 @@ using SharedTextLayoutManager = std::shared_ptr<const TextLayoutManager>;
  * Cross platform facade for iOS-specific RCTTTextLayoutManager.
  */
 class TextLayoutManager {
-public:
-  TextLayoutManager();
+ public:
+  TextLayoutManager(const SharedContextContainer &contextContainer);
   ~TextLayoutManager();
 
   /*
    * Measures `attributedString` using native text rendering infrastructure.
    */
   Size measure(
-    AttributedString attributedString,
-    ParagraphAttributes paragraphAttributes,
-    LayoutConstraints layoutConstraints
-  ) const;
+      Tag reactTag,
+      AttributedString attributedString,
+      ParagraphAttributes paragraphAttributes,
+      LayoutConstraints layoutConstraints) const;
 
   /*
    * Returns an opaque pointer to platform-specific TextLayoutManager.
@@ -43,7 +44,7 @@ class TextLayoutManager {
    */
   void *getNativeTextLayoutManager() const;
 
-private:
+ private:
   void *self_;
 };
 
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.mm b/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.mm
index f7658211522fb7..2c082e9e1677db 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.mm
+++ b/ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.mm
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,7 +12,8 @@
 namespace facebook {
 namespace react {
 
-TextLayoutManager::TextLayoutManager() {
+TextLayoutManager::TextLayoutManager(
+    const SharedContextContainer &contextContainer) {
   self_ = (__bridge_retained void *)[RCTTextLayoutManager new];
 }
 
@@ -26,11 +27,12 @@
 }
 
 Size TextLayoutManager::measure(
-  AttributedString attributedString,
-  ParagraphAttributes paragraphAttributes,
-  LayoutConstraints layoutConstraints
-) const {
-  RCTTextLayoutManager *textLayoutManager = (__bridge RCTTextLayoutManager *)self_;
+    Tag reactTag,
+    AttributedString attributedString,
+    ParagraphAttributes paragraphAttributes,
+    LayoutConstraints layoutConstraints) const {
+  RCTTextLayoutManager *textLayoutManager =
+      (__bridge RCTTextLayoutManager *)self_;
   return [textLayoutManager measureWithAttributedString:attributedString
                                     paragraphAttributes:paragraphAttributes
                                       layoutConstraints:layoutConstraints];
diff --git a/ReactCommon/fabric/textlayoutmanager/tests/TextLayoutManagerTest.cpp b/ReactCommon/fabric/textlayoutmanager/tests/TextLayoutManagerTest.cpp
index d873c6eed80e86..17ba173305d54c 100644
--- a/ReactCommon/fabric/textlayoutmanager/tests/TextLayoutManagerTest.cpp
+++ b/ReactCommon/fabric/textlayoutmanager/tests/TextLayoutManagerTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,7 +9,7 @@
 
 #include <gtest/gtest.h>
 
-#include <fabric/textlayoutmanager/TextLayoutManager.h>
+#include <react/textlayoutmanager/TextLayoutManager.h>
 
 using namespace facebook::react;
 
diff --git a/ReactCommon/fabric/uimanager/BUCK b/ReactCommon/fabric/uimanager/BUCK
index 44d2906e76fb90..f0ce4821aea9b6 100644
--- a/ReactCommon/fabric/uimanager/BUCK
+++ b/ReactCommon/fabric/uimanager/BUCK
@@ -1,6 +1,6 @@
-load("//configurations/buck/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
+load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load(
-    "//ReactNative:DEFS.bzl",
+    "//tools/build_defs/oss:rn_defs.bzl",
     "ANDROID",
     "APPLE",
     "fb_xplat_cxx_test",
@@ -28,7 +28,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        prefix = "fabric/uimanager",
+        prefix = "react/uimanager",
     ),
     compiler_flags = [
         "-fexceptions",
@@ -39,7 +39,7 @@ rn_xplat_cxx_library(
     fbobjc_compiler_flags = APPLE_COMPILER_FLAGS,
     fbobjc_preprocessor_flags = get_debug_preprocessor_flags() + get_apple_inspector_flags(),
     fbobjc_tests = [
-        ":tests",
+        ":uimanagertests",
     ],
     force_static = True,
     macosx_tests_override = [],
@@ -55,6 +55,8 @@ rn_xplat_cxx_library(
         "xplat//folly:headers_only",
         "xplat//folly:memory",
         "xplat//folly:molly",
+        "xplat//jsi:JSIDynamic",
+        "xplat//jsi:jsi",
         "xplat//third-party/glog:glog",
         react_native_xplat_target("fabric/components/root:root"),
         react_native_xplat_target("fabric/components/view:view"),
@@ -65,7 +67,7 @@ rn_xplat_cxx_library(
 )
 
 fb_xplat_cxx_test(
-    name = "tests",
+    name = "uimanagertests",
     srcs = glob(["tests/**/*.cpp"]),
     headers = glob(["tests/**/*.h"]),
     compiler_flags = [
@@ -75,10 +77,16 @@ fb_xplat_cxx_test(
         "-Wall",
     ],
     contacts = ["oncall+react_native@xmail.facebook.com"],
-    platforms = APPLE,
+    platforms = (ANDROID, APPLE),
     deps = [
         "xplat//folly:molly",
         "xplat//third-party/gmock:gtest",
         ":uimanager",
+        react_native_xplat_target("fabric/components/activityindicator:activityindicator"),
+        react_native_xplat_target("fabric/components/image:image"),
+        react_native_xplat_target("fabric/components/root:root"),
+        react_native_xplat_target("fabric/components/scrollview:scrollview"),
+        react_native_xplat_target("fabric/components/text:text"),
+        react_native_xplat_target("fabric/components/view:view"),
     ],
 )
diff --git a/ReactCommon/fabric/uimanager/ComponentDescriptorFactory.h b/ReactCommon/fabric/uimanager/ComponentDescriptorFactory.h
index e349760be30969..c527e529e5f987 100644
--- a/ReactCommon/fabric/uimanager/ComponentDescriptorFactory.h
+++ b/ReactCommon/fabric/uimanager/ComponentDescriptorFactory.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,9 +9,9 @@
 
 #include <memory>
 
-#include <fabric/core/ComponentDescriptor.h>
-#include <fabric/events/EventDispatcher.h>
-#include <fabric/uimanager/ContextContainer.h>
+#include <react/core/ComponentDescriptor.h>
+#include <react/events/EventDispatcher.h>
+#include <react/uimanager/ContextContainer.h>
 
 #include "ComponentDescriptorRegistry.h"
 
@@ -24,9 +24,10 @@ namespace react {
  * should register its specific set of supported components.
  */
 class ComponentDescriptorFactory {
-
-public:
-  static SharedComponentDescriptorRegistry buildRegistry(const SharedEventDispatcher &eventDispatcher, const SharedContextContainer &contextContainer);
+ public:
+  static SharedComponentDescriptorRegistry buildRegistry(
+      const SharedEventDispatcher &eventDispatcher,
+      const SharedContextContainer &contextContainer);
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
index a41c4311a6bde9..b72d5d13a0f1d3 100644
--- a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
+++ b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.cpp
@@ -1,14 +1,18 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #include "ComponentDescriptorRegistry.h"
 
+#include <react/core/ShadowNodeFragment.h>
+#include <react/uimanager/primitives.h>
+
 namespace facebook {
 namespace react {
 
-void ComponentDescriptorRegistry::registerComponentDescriptor(SharedComponentDescriptor componentDescriptor) {
+void ComponentDescriptorRegistry::registerComponentDescriptor(
+    SharedComponentDescriptor componentDescriptor) {
   ComponentHandle componentHandle = componentDescriptor->getComponentHandle();
   _registryByHandle[componentHandle] = componentDescriptor;
 
@@ -16,13 +20,107 @@ void ComponentDescriptorRegistry::registerComponentDescriptor(SharedComponentDes
   _registryByName[componentName] = componentDescriptor;
 }
 
-const SharedComponentDescriptor ComponentDescriptorRegistry::operator[](const SharedShadowNode &shadowNode) const {
+const SharedComponentDescriptor ComponentDescriptorRegistry::operator[](
+    const SharedShadowNode &shadowNode) const {
   ComponentHandle componentHandle = shadowNode->getComponentHandle();
   return _registryByHandle.at(componentHandle);
 }
 
-const SharedComponentDescriptor ComponentDescriptorRegistry::operator[](const ComponentName &componentName) const {
-  return _registryByName.at(componentName);
+const SharedComponentDescriptor ComponentDescriptorRegistry::operator[](
+    const ComponentName &componentName) const {
+  auto it = _registryByName.find(componentName);
+  if (it == _registryByName.end()) {
+    throw std::invalid_argument(
+        ("Unable to find componentDescriptor for " + componentName).c_str());
+  }
+  return it->second;
+}
+
+static const std::string componentNameByReactViewName(std::string viewName) {
+  // We need this function only for the transition period;
+  // eventually, all names will be unified.
+
+  std::string rctPrefix("RCT");
+  if (std::mismatch(rctPrefix.begin(), rctPrefix.end(), viewName.begin())
+          .first == rctPrefix.end()) {
+    // If `viewName` has "RCT" prefix, remove it.
+    viewName.erase(0, rctPrefix.length());
+  }
+
+  // Fabric uses slightly new names for Text components because of differences
+  // in semantic.
+  if (viewName == "Text") {
+    return "Paragraph";
+  }
+  if (viewName == "VirtualText") {
+    return "Text";
+  }
+
+  if (viewName == "ImageView") {
+    return "Image";
+  }
+
+  if (viewName == "AndroidHorizontalScrollView") {
+    return "ScrollView";
+  }
+
+  if (viewName == "RKShimmeringView") {
+    return "ShimmeringView";
+  }
+
+  if (viewName == "AndroidProgressBar") {
+    return "ActivityIndicatorView";
+  }
+
+  // We need this temporarly for testing purposes until we have proper
+  // implementation of core components.
+  if (viewName == "SinglelineTextInputView" ||
+      viewName == "MultilineTextInputView" || viewName == "RefreshControl" ||
+      viewName == "AndroidSwipeRefreshLayout" || viewName == "SafeAreaView" ||
+      viewName == "ScrollContentView" ||
+      viewName == "AndroidHorizontalScrollContentView" // Android
+  ) {
+    return "View";
+  }
+
+  return viewName;
+}
+
+const ComponentDescriptor &ComponentDescriptorRegistry::at(
+    ComponentName componentName) const {
+  auto unifiedComponentName = componentNameByReactViewName(componentName);
+
+  auto it = _registryByName.find(unifiedComponentName);
+  if (it == _registryByName.end()) {
+    throw std::invalid_argument(
+        ("Unable to find componentDescriptor for " + unifiedComponentName)
+            .c_str());
+  }
+  return *it->second;
+}
+
+const ComponentDescriptor &ComponentDescriptorRegistry::at(
+    ComponentHandle componentHandle) const {
+  return *_registryByHandle.at(componentHandle);
+}
+
+SharedShadowNode ComponentDescriptorRegistry::createNode(
+    Tag tag,
+    const std::string &viewName,
+    Tag rootTag,
+    const folly::dynamic &props,
+    const SharedEventTarget &eventTarget) const {
+  ComponentName componentName = componentNameByReactViewName(viewName);
+  const SharedComponentDescriptor &componentDescriptor = (*this)[componentName];
+  RawProps rawProps = rawPropsFromDynamic(props);
+
+  SharedShadowNode shadowNode = componentDescriptor->createShadowNode(
+      {.tag = tag,
+       .rootTag = rootTag,
+       .eventEmitter =
+           componentDescriptor->createEventEmitter(std::move(eventTarget), tag),
+       .props = componentDescriptor->cloneProps(nullptr, rawProps)});
+  return shadowNode;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.h b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.h
index 4fec41dff1ea0d..7f6614fb9c6c20 100644
--- a/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.h
+++ b/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -7,28 +7,41 @@
 
 #include <memory>
 
-#include <fabric/core/ComponentDescriptor.h>
+#include <react/core/ComponentDescriptor.h>
 
 namespace facebook {
 namespace react {
 
 class ComponentDescriptorRegistry;
 
-using SharedComponentDescriptorRegistry = std::shared_ptr<const ComponentDescriptorRegistry>;
+using SharedComponentDescriptorRegistry =
+    std::shared_ptr<const ComponentDescriptorRegistry>;
 
 /*
  * Registry of particular `ComponentDescriptor`s.
  */
 class ComponentDescriptorRegistry {
-
-public:
-  void registerComponentDescriptor(SharedComponentDescriptor componentDescriptor);
-
-  const SharedComponentDescriptor operator[](const SharedShadowNode &shadowNode) const;
-  const SharedComponentDescriptor operator[](const ComponentName &componentName) const;
-
-private:
-  std::unordered_map<ComponentHandle, SharedComponentDescriptor> _registryByHandle;
+ public:
+  void registerComponentDescriptor(
+      SharedComponentDescriptor componentDescriptor);
+
+  const ComponentDescriptor &at(ComponentName componentName) const;
+  const ComponentDescriptor &at(ComponentHandle componentHandle) const;
+
+  const SharedComponentDescriptor operator[](
+      const SharedShadowNode &shadowNode) const;
+  const SharedComponentDescriptor operator[](
+      const ComponentName &componentName) const;
+  SharedShadowNode createNode(
+      Tag tag,
+      const std::string &viewName,
+      Tag rootTag,
+      const folly::dynamic &props,
+      const SharedEventTarget &eventTarget) const;
+
+ private:
+  std::unordered_map<ComponentHandle, SharedComponentDescriptor>
+      _registryByHandle;
   std::unordered_map<ComponentName, SharedComponentDescriptor> _registryByName;
 };
 
diff --git a/ReactCommon/fabric/uimanager/ContextContainer.h b/ReactCommon/fabric/uimanager/ContextContainer.h
index 2dbd0fb30ed116..8c0819c85326af 100644
--- a/ReactCommon/fabric/uimanager/ContextContainer.h
+++ b/ReactCommon/fabric/uimanager/ContextContainer.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -7,9 +7,11 @@
 
 #include <memory>
 #include <mutex>
+#include <string>
 #include <typeindex>
 #include <typeinfo>
 #include <unordered_map>
+#include <utility>
 
 namespace facebook {
 namespace react {
@@ -23,21 +25,18 @@ using SharedContextContainer = std::shared_ptr<ContextContainer>;
  * Instance types must be copyable.
  */
 class ContextContainer final {
-
-public:
+ public:
   /*
    * Registers an instance of the particular type `T` in the container.
    * If `key` parameter is specified, the instance is registered
    * by `{type, key}` pair.
    */
-  template<typename T>
-  void registerInstance(const T &instance, const std::string &key = "") {
+  template <typename T>
+  void registerInstance(const T &instance, const std::string &key = {}) {
     std::lock_guard<std::mutex> lock(mutex_);
 
-    instances_.insert({
-      {std::type_index(typeid(T)), key},
-      std::make_shared<T>(instance)
-    });
+    instances_.insert(
+        {{std::type_index(typeid(T)), key}, std::make_shared<T>(instance)});
   }
 
   /*
@@ -45,18 +44,19 @@ class ContextContainer final {
    * If `key` parameter is specified, the lookup will be performed
    * by {type, key} pair.
    */
-  template<typename T>
-  T getInstance(const std::string &key = "") const {
+  template <typename T>
+  T getInstance(const std::string &key = {}) const {
     std::lock_guard<std::mutex> lock(mutex_);
 
-    return *std::static_pointer_cast<T>(instances_.at({std::type_index(typeid(T)), key}));
+    return *std::static_pointer_cast<T>(
+        instances_.at({std::type_index(typeid(T)), key}));
   }
 
-private:
+ private:
   std::unordered_map<
-    std::pair<std::type_index, std::string>,
-    std::shared_ptr<void>
-  > instances_;
+      std::pair<std::type_index, std::string>,
+      std::shared_ptr<void>>
+      instances_;
 
   mutable std::mutex mutex_;
 };
diff --git a/ReactCommon/fabric/uimanager/Differentiator.cpp b/ReactCommon/fabric/uimanager/Differentiator.cpp
index e5e1da99e19a9e..3b6f1f891b95ca 100644
--- a/ReactCommon/fabric/uimanager/Differentiator.cpp
+++ b/ReactCommon/fabric/uimanager/Differentiator.cpp
@@ -1,206 +1,229 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #include "Differentiator.h"
 
+#include <react/core/LayoutableShadowNode.h>
+#include "ShadowView.h"
+
 namespace facebook {
 namespace react {
 
-static void calculateMutationInstructions(
-  TreeMutationInstructionList &instructions,
-  SharedShadowNode parentNode,
-  const SharedShadowNodeList &oldChildNodes,
-  const SharedShadowNodeList &newChildNodes
-) {
-  // The current version of the algorithm is otimized for simplicity,
-  // not for performance of optimal result.
+static void sliceChildShadowNodeViewPairsRecursively(
+    ShadowViewNodePairList &pairList,
+    Point layoutOffset,
+    const ShadowNode &shadowNode) {
+  for (const auto &childShadowNode : shadowNode.getChildren()) {
+    auto shadowView = ShadowView(*childShadowNode);
+
+    const auto layoutableShadowNode =
+        dynamic_cast<const LayoutableShadowNode *>(childShadowNode.get());
+    if (layoutableShadowNode && layoutableShadowNode->isLayoutOnly()) {
+      sliceChildShadowNodeViewPairsRecursively(
+          pairList,
+          layoutOffset + shadowView.layoutMetrics.frame.origin,
+          *childShadowNode);
+    } else {
+      shadowView.layoutMetrics.frame.origin += layoutOffset;
+      pairList.push_back({shadowView, *childShadowNode});
+    }
+  }
+}
 
-  // TODO(shergin): Consider to use Minimal Edit Distance algorithm to produce
-  // optimal set of instructions and improve mounting performance.
-  // https://en.wikipedia.org/wiki/Edit_distance
-  // https://www.geeksforgeeks.org/dynamic-programming-set-5-edit-distance/
+static ShadowViewNodePairList sliceChildShadowNodeViewPairs(
+    const ShadowNode &shadowNode) {
+  ShadowViewNodePairList pairList;
+  sliceChildShadowNodeViewPairsRecursively(pairList, {0, 0}, shadowNode);
+  return pairList;
+}
 
-  if (oldChildNodes == newChildNodes) {
+static void calculateShadowViewMutations(
+    ShadowViewMutationList &mutations,
+    const ShadowView &parentShadowView,
+    const ShadowViewNodePairList &oldChildPairs,
+    const ShadowViewNodePairList &newChildPairs) {
+  // The current version of the algorithm is otimized for simplicity,
+  // not for performance or optimal result.
+
+  if (oldChildPairs == newChildPairs) {
     return;
   }
 
-  if (oldChildNodes.size() == 0 && newChildNodes.size() == 0) {
+  if (oldChildPairs.size() == 0 && newChildPairs.size() == 0) {
     return;
   }
 
-  std::unordered_map<Tag, SharedShadowNode> insertedNodes;
+  std::unordered_map<Tag, ShadowViewNodePair> insertedPaires;
   int index = 0;
 
-  TreeMutationInstructionList createInstructions = {};
-  TreeMutationInstructionList deleteInstructions = {};
-  TreeMutationInstructionList insertInstructions = {};
-  TreeMutationInstructionList removeInstructions = {};
-  TreeMutationInstructionList replaceInstructions = {};
-  TreeMutationInstructionList downwardInstructions = {};
-  TreeMutationInstructionList destructionDownwardInstructions = {};
-
-  // Stage 1: Collectings Updates
-  for (index = 0; index < oldChildNodes.size() && index < newChildNodes.size(); index++) {
-    const auto &oldChildNode = oldChildNodes.at(index);
-    const auto &newChildNode = newChildNodes.at(index);
-
-    if (oldChildNode->getTag() != newChildNode->getTag()) {
+  ShadowViewMutationList createMutations = {};
+  ShadowViewMutationList deleteMutations = {};
+  ShadowViewMutationList insertMutations = {};
+  ShadowViewMutationList removeMutations = {};
+  ShadowViewMutationList updateMutations = {};
+  ShadowViewMutationList downwardMutations = {};
+  ShadowViewMutationList destructiveDownwardMutations = {};
+
+  // Stage 1: Collecting `Update` mutations
+  for (index = 0; index < oldChildPairs.size() && index < newChildPairs.size();
+       index++) {
+    const auto &oldChildPair = oldChildPairs[index];
+    const auto &newChildPair = newChildPairs[index];
+
+    if (oldChildPair.shadowView.tag != newChildPair.shadowView.tag) {
       // Totally different nodes, updating is impossible.
       break;
     }
 
-    if (*oldChildNode != *newChildNode) {
-      replaceInstructions.push_back(
-        TreeMutationInstruction::Replace(
-          parentNode,
-          oldChildNode,
-          newChildNode,
-          index
-        )
-      );
+    if (oldChildPair.shadowView != newChildPair.shadowView) {
+      updateMutations.push_back(ShadowViewMutation::UpdateMutation(
+          parentShadowView,
+          oldChildPair.shadowView,
+          newChildPair.shadowView,
+          index));
     }
 
-    calculateMutationInstructions(
-      *(newChildNode->getChildren().size() ? &downwardInstructions : &destructionDownwardInstructions),
-      oldChildNode,
-      oldChildNode->getChildren(),
-      newChildNode->getChildren()
-    );
+    const auto oldGrandChildPairs =
+        sliceChildShadowNodeViewPairs(oldChildPair.shadowNode);
+    const auto newGrandChildPairs =
+        sliceChildShadowNodeViewPairs(newChildPair.shadowNode);
+    calculateShadowViewMutations(
+        *(newGrandChildPairs.size() ? &downwardMutations
+                                    : &destructiveDownwardMutations),
+        oldChildPair.shadowView,
+        oldGrandChildPairs,
+        newGrandChildPairs);
   }
 
   int lastIndexAfterFirstStage = index;
 
-  // Stage 2: Collectings Insertions
-  for (; index < newChildNodes.size(); index++) {
-    const auto &newChildNode = newChildNodes.at(index);
+  // Stage 2: Collecting `Insert` mutations
+  for (; index < newChildPairs.size(); index++) {
+    const auto &newChildPair = newChildPairs[index];
 
-    insertInstructions.push_back(
-      TreeMutationInstruction::Insert(
-        parentNode,
-        newChildNode,
-        index
-      )
-    );
+    insertMutations.push_back(ShadowViewMutation::InsertMutation(
+        parentShadowView, newChildPair.shadowView, index));
 
-    insertedNodes.insert({newChildNode->getTag(), newChildNode});
+    insertedPaires.insert({newChildPair.shadowView.tag, newChildPair});
   }
 
-  // Stage 3: Collectings Deletions and Removals
-  for (index = lastIndexAfterFirstStage; index < oldChildNodes.size(); index++) {
-    const auto &oldChildNode = oldChildNodes.at(index);
-
-    // Even if the old node was (re)inserted, we have to generate `remove`
-    // instruction.
-    removeInstructions.push_back(
-      TreeMutationInstruction::Remove(
-        parentNode,
-        oldChildNode,
-        index
-      )
-    );
-
-    const auto &it = insertedNodes.find(oldChildNode->getTag());
-
-    if (it == insertedNodes.end()) {
-      // The old node was *not* (re)inserted.
-      // We have to generate `delete` instruction and apply the algorithm
+  // Stage 3: Collecting `Delete` and `Remove` mutations
+  for (index = lastIndexAfterFirstStage; index < oldChildPairs.size();
+       index++) {
+    const auto &oldChildPair = oldChildPairs[index];
+
+    // Even if the old view was (re)inserted, we have to generate `remove`
+    // mutation.
+    removeMutations.push_back(ShadowViewMutation::RemoveMutation(
+        parentShadowView, oldChildPair.shadowView, index));
+
+    const auto &it = insertedPaires.find(oldChildPair.shadowView.tag);
+
+    if (it == insertedPaires.end()) {
+      // The old view was *not* (re)inserted.
+      // We have to generate `delete` mutation and apply the algorithm
       // recursively.
-      deleteInstructions.push_back(
-        TreeMutationInstruction::Delete(
-          oldChildNode
-        )
-      );
+      deleteMutations.push_back(
+          ShadowViewMutation::DeleteMutation(oldChildPair.shadowView));
 
       // We also have to call the algorithm recursively to clean up the entire
-      // subtree starting from the removed node.
-      calculateMutationInstructions(
-        destructionDownwardInstructions,
-        oldChildNode,
-        oldChildNode->getChildren(),
-        {}
-      );
+      // subtree starting from the removed view.
+      calculateShadowViewMutations(
+          destructiveDownwardMutations,
+          oldChildPair.shadowView,
+          sliceChildShadowNodeViewPairs(oldChildPair.shadowNode),
+          {});
     } else {
-      // The old node *was* (re)inserted.
-      // We have to call the algorithm recursively if the inserted node
+      // The old view *was* (re)inserted.
+      // We have to call the algorithm recursively if the inserted view
       // is *not* the same as removed one.
-      const auto &newChildNode = it->second;
-      if (newChildNode != oldChildNode) {
-        calculateMutationInstructions(
-          *(newChildNode->getChildren().size() ? &downwardInstructions : &destructionDownwardInstructions),
-          newChildNode,
-          oldChildNode->getChildren(),
-          newChildNode->getChildren()
-        );
+      const auto &newChildPair = it->second;
+      if (newChildPair.shadowView != oldChildPair.shadowView) {
+        const auto oldGrandChildPairs =
+            sliceChildShadowNodeViewPairs(oldChildPair.shadowNode);
+        const auto newGrandChildPairs =
+            sliceChildShadowNodeViewPairs(newChildPair.shadowNode);
+        calculateShadowViewMutations(
+            *(newGrandChildPairs.size() ? &downwardMutations
+                                        : &destructiveDownwardMutations),
+            newChildPair.shadowView,
+            oldGrandChildPairs,
+            newGrandChildPairs);
       }
 
-      // In any case we have to remove the node from `insertedNodes` as
-      // indication that the node was actually removed (which means that
-      // the node existed before), hence we don't have to generate
-      // `create` instruction.
-      insertedNodes.erase(it);
+      // In any case we have to remove the view from `insertedPaires` as
+      // indication that the view was actually removed (which means that
+      // the view existed before), hence we don't have to generate
+      // `create` mutation.
+      insertedPaires.erase(it);
     }
   }
 
-  // Stage 4: Collectings Creations
-  for (index = lastIndexAfterFirstStage; index < newChildNodes.size(); index++) {
-    const auto &newChildNode = newChildNodes.at(index);
+  // Stage 4: Collecting `Create` mutations
+  for (index = lastIndexAfterFirstStage; index < newChildPairs.size();
+       index++) {
+    const auto &newChildPair = newChildPairs[index];
 
-    if (insertedNodes.find(newChildNode->getTag()) == insertedNodes.end()) {
-      // The new node was (re)inserted, so there is no need to create it.
+    if (insertedPaires.find(newChildPair.shadowView.tag) ==
+        insertedPaires.end()) {
+      // The new view was (re)inserted, so there is no need to create it.
       continue;
     }
 
-    createInstructions.push_back(
-      TreeMutationInstruction::Create(
-        newChildNode
-      )
-    );
-
-    calculateMutationInstructions(
-      downwardInstructions,
-      newChildNode,
-      {},
-      newChildNode->getChildren()
-    );
+    createMutations.push_back(
+        ShadowViewMutation::CreateMutation(newChildPair.shadowView));
+
+    calculateShadowViewMutations(
+        downwardMutations,
+        newChildPair.shadowView,
+        {},
+        sliceChildShadowNodeViewPairs(newChildPair.shadowNode));
   }
 
-  // All instructions in an optimal order:
-  instructions.insert(instructions.end(), destructionDownwardInstructions.begin(), destructionDownwardInstructions.end());
-  instructions.insert(instructions.end(), replaceInstructions.begin(), replaceInstructions.end());
-  instructions.insert(instructions.end(), removeInstructions.rbegin(), removeInstructions.rend());
-  instructions.insert(instructions.end(), createInstructions.begin(), createInstructions.end());
-  instructions.insert(instructions.end(), downwardInstructions.begin(), downwardInstructions.end());
-  instructions.insert(instructions.end(), insertInstructions.begin(), insertInstructions.end());
-  instructions.insert(instructions.end(), deleteInstructions.begin(), deleteInstructions.end());
+  // All mutations in an optimal order:
+  mutations.insert(
+      mutations.end(),
+      destructiveDownwardMutations.begin(),
+      destructiveDownwardMutations.end());
+  mutations.insert(
+      mutations.end(), updateMutations.begin(), updateMutations.end());
+  mutations.insert(
+      mutations.end(), removeMutations.rbegin(), removeMutations.rend());
+  mutations.insert(
+      mutations.end(), deleteMutations.begin(), deleteMutations.end());
+  mutations.insert(
+      mutations.end(), createMutations.begin(), createMutations.end());
+  mutations.insert(
+      mutations.end(), insertMutations.begin(), insertMutations.end());
+  mutations.insert(
+      mutations.end(), downwardMutations.begin(), downwardMutations.end());
 }
 
-void calculateMutationInstructions(
-  TreeMutationInstructionList &instructions,
-  const SharedShadowNode &oldRootShadowNode,
-  const SharedShadowNode &newRootShadowNode
-) {
+ShadowViewMutationList calculateShadowViewMutations(
+    const ShadowNode &oldRootShadowNode,
+    const ShadowNode &newRootShadowNode) {
   // Root shadow nodes must have same tag.
-  assert(oldRootShadowNode->getTag() == newRootShadowNode->getTag());
-
-  if (*oldRootShadowNode != *newRootShadowNode) {
-    instructions.push_back(
-      TreeMutationInstruction::Replace(
-        nullptr,
-        oldRootShadowNode,
-        newRootShadowNode,
-        -1
-      )
-    );
+  assert(oldRootShadowNode.getTag() == newRootShadowNode.getTag());
+
+  ShadowViewMutationList mutations;
+
+  auto oldRootShadowView = ShadowView(oldRootShadowNode);
+  auto newRootShadowView = ShadowView(newRootShadowNode);
+
+  if (oldRootShadowView != newRootShadowView) {
+    mutations.push_back(ShadowViewMutation::UpdateMutation(
+        ShadowView(), oldRootShadowView, newRootShadowView, -1));
   }
 
-  calculateMutationInstructions(
-    instructions,
-    oldRootShadowNode,
-    oldRootShadowNode->getChildren(),
-    newRootShadowNode->getChildren()
-  );
+  calculateShadowViewMutations(
+      mutations,
+      ShadowView(oldRootShadowNode),
+      sliceChildShadowNodeViewPairs(oldRootShadowNode),
+      sliceChildShadowNodeViewPairs(newRootShadowNode));
+
+  return mutations;
 }
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/Differentiator.h b/ReactCommon/fabric/uimanager/Differentiator.h
index fbfcddd62089fb..e24c8a7018bc6c 100644
--- a/ReactCommon/fabric/uimanager/Differentiator.h
+++ b/ReactCommon/fabric/uimanager/Differentiator.h
@@ -1,26 +1,24 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #pragma once
 
-#include <fabric/core/ShadowNode.h>
-#include <fabric/uimanager/TreeMutationInstruction.h>
+#include <react/core/ShadowNode.h>
+#include <react/uimanager/ShadowViewMutation.h>
 
 namespace facebook {
 namespace react {
 
 /*
- * Calculates set of mutation instuctions which describe how the old
- * ShadowNode tree can be transformed to the new ShadowNode tree.
- * The set of instuctions might be and might not be optimal.
+ * Calculates a list of view mutations which describes how the old
+ * `ShadowTree` can be transformed to the new one.
+ * The list of mutations might be and might not be optimal.
  */
-void calculateMutationInstructions(
-  TreeMutationInstructionList &instructions,
-  const SharedShadowNode &oldNode,
-  const SharedShadowNode &newNode
-);
+ShadowViewMutationList calculateShadowViewMutations(
+    const ShadowNode &oldRootShadowNode,
+    const ShadowNode &newRootShadowNode);
 
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/FabricUIManager.cpp b/ReactCommon/fabric/uimanager/FabricUIManager.cpp
deleted file mode 100644
index 11f6b362d64d23..00000000000000
--- a/ReactCommon/fabric/uimanager/FabricUIManager.cpp
+++ /dev/null
@@ -1,257 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "FabricUIManager.h"
-
-#include <glog/logging.h>
-
-#include <fabric/components/view/ViewComponentDescriptor.h>
-#include <fabric/components/view/ViewProps.h>
-#include <fabric/components/view/ViewShadowNode.h>
-#include <fabric/core/componentDescriptor.h>
-#include <fabric/core/LayoutContext.h>
-#include <fabric/core/ShadowNodeFragment.h>
-#include <fabric/debug/DebugStringConvertible.h>
-#include <fabric/debug/DebugStringConvertibleItem.h>
-
-namespace facebook {
-namespace react {
-
-// TODO: Kill this flag and remove debug logging.
-const bool isLoggingEnabled = false;
-
-static const RawProps rawPropsFromDynamic(const folly::dynamic object) {
-  // TODO: Convert this to something smarter, probably returning `std::iterator`.
-  RawProps result;
-
-  if (object.isNull()) {
-    return result;
-  }
-
-  assert(object.isObject());
-
-  for (const auto &pair : object.items()) {
-    assert(pair.first.isString());
-    result[pair.first.asString()] = pair.second;
-  }
-
-  return result;
-}
-
-static const std::string componentNameByReactViewName(std::string viewName) {
-  // We need this function only for the transition period;
-  // eventually, all names will be unified.
-
-  std::string rctPrefix("RCT");
-  if (std::mismatch(rctPrefix.begin(), rctPrefix.end(), viewName.begin()).first == rctPrefix.end()) {
-    // If `viewName` has "RCT" prefix, remove it.
-    viewName.erase(0, rctPrefix.length());
-  }
-
-  // Fabric uses slightly new names for Text components because of differences
-  // in semantic.
-  if (viewName == "Text") {
-    return "Paragraph";
-  }
-  if (viewName == "VirtualText") {
-    return "Text";
-  }
-
-  if (viewName == "ImageView") {
-    return "Image";
-  }
-
-  // We need this temporarly for testing purposes until we have proper
-  // implementation of core components.
-  if (
-    viewName == "SinglelineTextInputView" ||
-    viewName == "MultilineTextInputView" ||
-    viewName == "RefreshControl" ||
-    viewName == "SafeAreaView" ||
-    viewName == "ScrollContentView"
-  ) {
-    return "View";
-  }
-
-  return viewName;
-}
-
-FabricUIManager::FabricUIManager(SharedComponentDescriptorRegistry componentDescriptorRegistry) {
-  componentDescriptorRegistry_ = componentDescriptorRegistry;
-}
-
-FabricUIManager::~FabricUIManager() {
-  if (eventHandler_) {
-    releaseEventHandlerFunction_(eventHandler_);
-  }
-}
-
-void FabricUIManager::setDelegate(UIManagerDelegate *delegate) {
-  delegate_ = delegate;
-}
-
-UIManagerDelegate *FabricUIManager::getDelegate() {
-  return delegate_;
-}
-
-void FabricUIManager::setDispatchEventToEmptyTargetFunction(std::function<DispatchEventToEmptyTargetFunction> dispatchEventFunction) {
-  dispatchEventToEmptyTargetFunction_ = dispatchEventFunction;
-}
-
-void FabricUIManager::setDispatchEventToTargetFunction(std::function<DispatchEventToTargetFunction> dispatchEventFunction) {
-  dispatchEventToTargetFunction_ = dispatchEventFunction;
-}
-
-void FabricUIManager::setReleaseEventHandlerFunction(std::function<ReleaseEventHandlerFunction> releaseEventHandlerFunction) {
-  releaseEventHandlerFunction_ = releaseEventHandlerFunction;
-}
-
-void FabricUIManager::setReleaseEventTargetFunction(std::function<ReleaseEventTargetFunction> releaseEventTargetFunction) {
-  releaseEventTargetFunction_ = releaseEventTargetFunction;
-}
-
-void FabricUIManager::dispatchEventToEmptyTarget(const std::string &type, const folly::dynamic &payload) const {
-  dispatchEventToEmptyTargetFunction_(
-    eventHandler_,
-    const_cast<std::string &>(type),
-    const_cast<folly::dynamic &>(payload)
-  );
-}
-
-void FabricUIManager::dispatchEventToTarget(const EventTarget &eventTarget, const std::string &type, const folly::dynamic &payload) const {
-  dispatchEventToTargetFunction_(
-    eventHandler_,
-    eventTarget,
-    const_cast<std::string &>(type),
-    const_cast<folly::dynamic &>(payload)
-  );
-}
-
-void FabricUIManager::releaseEventTarget(const EventTarget &eventTarget) const {
-  releaseEventTargetFunction_(eventTarget);
-}
-
-SharedShadowNode FabricUIManager::createNode(int tag, std::string viewName, int rootTag, folly::dynamic props, EventTarget eventTarget) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::createNode(tag: " << tag << ", name: " << viewName << ", rootTag: " << rootTag << ", props: " << props << ")";
-
-  ComponentName componentName = componentNameByReactViewName(viewName);
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[componentName];
-  RawProps rawProps = rawPropsFromDynamic(props);
-
-  SharedShadowNode shadowNode =
-    componentDescriptor->createShadowNode({
-      .tag = tag,
-      .rootTag = rootTag,
-      .eventEmitter = componentDescriptor->createEventEmitter(eventTarget, tag),
-      .props = componentDescriptor->cloneProps(nullptr, rawProps)
-    });
-
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::createNode() -> " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false});
-
-  if (delegate_) {
-    delegate_->uiManagerDidCreateShadowNode(shadowNode);
-  }
-
-  return shadowNode;
-}
-
-SharedShadowNode FabricUIManager::cloneNode(const SharedShadowNode &shadowNode) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNode(shadowNode: " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ")";
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[shadowNode];
-
-  SharedShadowNode clonedShadowNode =
-    componentDescriptor->cloneShadowNode(*shadowNode, {});
-
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNode() -> " << clonedShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false});
-  return clonedShadowNode;
-}
-
-SharedShadowNode FabricUIManager::cloneNodeWithNewChildren(const SharedShadowNode &shadowNode) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewChildren(shadowNode: " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ")";
-  // Assuming semantic: Cloning with same props but empty children.
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[shadowNode];
-
-  SharedShadowNode clonedShadowNode =
-    componentDescriptor->cloneShadowNode(
-      *shadowNode,
-      {
-        .children = ShadowNode::emptySharedShadowNodeSharedList()
-      }
-    );
-
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewChildren() -> " << clonedShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false});
-  return clonedShadowNode;
-}
-
-SharedShadowNode FabricUIManager::cloneNodeWithNewProps(const SharedShadowNode &shadowNode, folly::dynamic props) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewProps(shadowNode: " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ", props: " << props << ")";
-  // Assuming semantic: Cloning with same children and specified props.
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[shadowNode];
-  RawProps rawProps = rawPropsFromDynamic(props);
-
-  SharedShadowNode clonedShadowNode =
-    componentDescriptor->cloneShadowNode(
-      *shadowNode,
-      {
-        .props = componentDescriptor->cloneProps(shadowNode->getProps(), rawProps)
-      }
-    );
-
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewProps() -> " << clonedShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false});
-  return clonedShadowNode;
-}
-
-SharedShadowNode FabricUIManager::cloneNodeWithNewChildrenAndProps(const SharedShadowNode &shadowNode, folly::dynamic props) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewChildrenAndProps(shadowNode: " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ", props: " << props << ")";
-  // Assuming semantic: Cloning with empty children and specified props.
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[shadowNode];
-  RawProps rawProps = rawPropsFromDynamic(props);
-
-  SharedShadowNode clonedShadowNode =
-    componentDescriptor->cloneShadowNode(
-      *shadowNode,
-      {
-        .props = componentDescriptor->cloneProps(shadowNode->getProps(), rawProps),
-        .children = ShadowNode::emptySharedShadowNodeSharedList()
-      }
-    );
-
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::cloneNodeWithNewChildrenAndProps() -> " << clonedShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false});
-  return clonedShadowNode;
-}
-
-void FabricUIManager::appendChild(const SharedShadowNode &parentShadowNode, const SharedShadowNode &childShadowNode) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::appendChild(parentShadowNode: " << parentShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ", childShadowNode: " << childShadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ")";
-  const SharedComponentDescriptor &componentDescriptor = (*componentDescriptorRegistry_)[parentShadowNode];
-  componentDescriptor->appendChild(parentShadowNode, childShadowNode);
-}
-
-SharedShadowNodeUnsharedList FabricUIManager::createChildSet(int rootTag) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::createChildSet(rootTag: " << rootTag << ")";
-  return std::make_shared<SharedShadowNodeList>(SharedShadowNodeList({}));
-}
-
-void FabricUIManager::appendChildToSet(const SharedShadowNodeUnsharedList &shadowNodeList, const SharedShadowNode &shadowNode) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::appendChildToSet(shadowNodeList: " << shadowNodeList << ", shadowNode: " << shadowNode->getDebugDescription(DebugStringConvertibleOptions {.format = false}) << ")";
-  shadowNodeList->push_back(shadowNode);
-}
-
-void FabricUIManager::completeRoot(int rootTag, const SharedShadowNodeUnsharedList &children) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::completeRoot(rootTag: " << rootTag << ", shadowNodeList: " << children << ")";
-
-  if (delegate_) {
-    delegate_->uiManagerDidFinishTransaction(rootTag, children);
-  }
-}
-
-void FabricUIManager::registerEventHandler(const EventHandler &eventHandler) {
-  isLoggingEnabled && LOG(INFO) << "FabricUIManager::registerEventHandler(eventHandler: " << eventHandler << ")";
-  eventHandler_ = eventHandler;
-}
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/FabricUIManager.h b/ReactCommon/fabric/uimanager/FabricUIManager.h
deleted file mode 100644
index e33501e3197a6e..00000000000000
--- a/ReactCommon/fabric/uimanager/FabricUIManager.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <memory>
-
-#include <folly/dynamic.h>
-
-#include <fabric/core/ShadowNode.h>
-#include <fabric/uimanager/ComponentDescriptorRegistry.h>
-#include <fabric/uimanager/UIManagerDelegate.h>
-
-namespace facebook {
-namespace react {
-
-using DispatchEventToEmptyTargetFunction = void (EventHandler eventHandler, std::string type, folly::dynamic payload);
-using DispatchEventToTargetFunction = void (EventHandler eventHandler, EventTarget eventTarget, std::string type, folly::dynamic payload);
-using ReleaseEventHandlerFunction = void (EventHandler eventHandler);
-using ReleaseEventTargetFunction = void (EventTarget eventTarget);
-
-class FabricUIManager {
-public:
-
-#pragma mark - Native-facing Interface
-
-  FabricUIManager(SharedComponentDescriptorRegistry componentDescriptorRegistry);
-  ~FabricUIManager();
-
-  /*
-   * Sets and gets the UIManager's delegate.
-   * The delegate is stored as a raw pointer, so the owner must null
-   * the pointer before being destroyed.
-   */
-  void setDelegate(UIManagerDelegate *delegate);
-  UIManagerDelegate *getDelegate();
-
-#pragma mark - Callback Functions
-
-  /*
-   * Registers callback functions.
-   */
-  void setDispatchEventToEmptyTargetFunction(std::function<DispatchEventToEmptyTargetFunction> dispatchEventFunction);
-  void setDispatchEventToTargetFunction(std::function<DispatchEventToTargetFunction> dispatchEventFunction);
-  void setReleaseEventHandlerFunction(std::function<ReleaseEventHandlerFunction> releaseEventHandlerFunction);
-  void setReleaseEventTargetFunction(std::function<ReleaseEventTargetFunction> releaseEventTargetFunction);
-
-#pragma mark - Native-facing Interface
-
-  void dispatchEventToEmptyTarget(const std::string &type, const folly::dynamic &payload) const;
-  void dispatchEventToTarget(const EventTarget &eventTarget, const std::string &type, const folly::dynamic &payload) const;
-  void releaseEventTarget(const EventTarget &eventTarget) const;
-
-#pragma mark - JavaScript/React-facing Interface
-
-  SharedShadowNode createNode(Tag reactTag, std::string viewName, Tag rootTag, folly::dynamic props, EventTarget eventTarget);
-  SharedShadowNode cloneNode(const SharedShadowNode &node);
-  SharedShadowNode cloneNodeWithNewChildren(const SharedShadowNode &node);
-  SharedShadowNode cloneNodeWithNewProps(const SharedShadowNode &node, folly::dynamic props);
-  SharedShadowNode cloneNodeWithNewChildrenAndProps(const SharedShadowNode &node, folly::dynamic newProps);
-  void appendChild(const SharedShadowNode &parentNode, const SharedShadowNode &childNode);
-  SharedShadowNodeUnsharedList createChildSet(Tag rootTag);
-  void appendChildToSet(const SharedShadowNodeUnsharedList &childSet, const SharedShadowNode &childNode);
-  void completeRoot(Tag rootTag, const SharedShadowNodeUnsharedList &childSet);
-  void registerEventHandler(const EventHandler &eventHandler);
-
-private:
-
-  SharedComponentDescriptorRegistry componentDescriptorRegistry_;
-  UIManagerDelegate *delegate_;
-  EventHandler eventHandler_;
-  std::function<DispatchEventToEmptyTargetFunction> dispatchEventToEmptyTargetFunction_;
-  std::function<DispatchEventToTargetFunction> dispatchEventToTargetFunction_;
-  std::function<ReleaseEventHandlerFunction> releaseEventHandlerFunction_;
-  std::function<ReleaseEventTargetFunction> releaseEventTargetFunction_;
-};
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/Scheduler.cpp b/ReactCommon/fabric/uimanager/Scheduler.cpp
index 08b1980bba046d..478f52def840fc 100644
--- a/ReactCommon/fabric/uimanager/Scheduler.cpp
+++ b/ReactCommon/fabric/uimanager/Scheduler.cpp
@@ -1,13 +1,17 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #include "Scheduler.h"
 
-#include <fabric/core/LayoutContext.h>
-#include <fabric/uimanager/ComponentDescriptorRegistry.h>
-#include <fabric/uimanager/FabricUIManager.h>
+#include <jsi/jsi.h>
+
+#include <react/core/LayoutContext.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+#include <react/uimanager/UIManager.h>
+#include <react/uimanager/UIManagerBinding.h>
+#include <react/uimanager/UITemplateProcessor.h>
 
 #include "ComponentDescriptorFactory.h"
 #include "Differentiator.h"
@@ -15,47 +19,130 @@
 namespace facebook {
 namespace react {
 
-Scheduler::Scheduler(const SharedContextContainer &contextContainer):
-  contextContainer_(contextContainer) {
-  const auto &eventDispatcher = std::make_shared<SchedulerEventDispatcher>();
-  const auto &componentDescriptorRegistry = ComponentDescriptorFactory::buildRegistry(eventDispatcher, contextContainer);
-
-  uiManager_ = std::make_shared<FabricUIManager>(componentDescriptorRegistry);
-  uiManager_->setDelegate(this);
-
-  eventDispatcher->setUIManager(uiManager_);
-  eventDispatcher_ = eventDispatcher;
+Scheduler::Scheduler(const SharedContextContainer &contextContainer)
+    : contextContainer_(contextContainer) {
+  const auto asynchronousEventBeatFactory =
+      contextContainer->getInstance<EventBeatFactory>("asynchronous");
+  const auto synchronousEventBeatFactory =
+      contextContainer->getInstance<EventBeatFactory>("synchronous");
+
+  runtimeExecutor_ =
+      contextContainer->getInstance<RuntimeExecutor>("runtime-executor");
+
+  auto uiManager = std::make_unique<UIManager>();
+  auto &uiManagerRef = *uiManager;
+  uiManagerBinding_ =
+      std::make_shared<UIManagerBinding>(std::move(uiManager));
+
+  auto eventPipe = [uiManagerBinding = uiManagerBinding_.get()](
+                       jsi::Runtime &runtime,
+                       const EventTarget *eventTarget,
+                       const std::string &type,
+                       const folly::dynamic &payload) {
+    uiManagerBinding->dispatchEvent(runtime, eventTarget, type, payload);
+  };
+
+  auto eventDispatcher = std::make_shared<EventDispatcher>(
+      eventPipe, synchronousEventBeatFactory, asynchronousEventBeatFactory);
+
+  componentDescriptorRegistry_ = ComponentDescriptorFactory::buildRegistry(
+      eventDispatcher, contextContainer);
+
+  uiManagerRef.setDelegate(this);
+  uiManagerRef.setShadowTreeRegistry(&shadowTreeRegistry_);
+  uiManagerRef.setComponentDescriptorRegistry(componentDescriptorRegistry_);
+
+  runtimeExecutor_([=](jsi::Runtime &runtime) {
+    UIManagerBinding::install(runtime, uiManagerBinding_);
+  });
 }
 
 Scheduler::~Scheduler() {
-  uiManager_->setDelegate(nullptr);
-  eventDispatcher_->setUIManager(nullptr);
+  uiManagerBinding_->invalidate();
 }
 
-void Scheduler::registerRootTag(Tag rootTag) {
-  const auto &shadowTree = std::make_shared<ShadowTree>(rootTag);
+void Scheduler::startSurface(
+    SurfaceId surfaceId,
+    const std::string &moduleName,
+    const folly::dynamic &initialProps,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  auto shadowTree =
+      std::make_unique<ShadowTree>(surfaceId, layoutConstraints, layoutContext);
   shadowTree->setDelegate(this);
-  shadowTreeRegistry_.insert({rootTag, shadowTree});
+
+  shadowTreeRegistry_.add(std::move(shadowTree));
+
+#ifndef ANDROID
+  runtimeExecutor_([=](jsi::Runtime &runtime) {
+    uiManagerBinding_->startSurface(
+        runtime, surfaceId, moduleName, initialProps);
+  });
+#endif
 }
 
-void Scheduler::unregisterRootTag(Tag rootTag) {
-  const auto &iterator = shadowTreeRegistry_.find(rootTag);
-  const auto &shadowTree = iterator->second;
-  assert(shadowTree);
+void Scheduler::renderTemplateToSurface(
+    SurfaceId surfaceId,
+    const std::string &uiTemplate) {
+  try {
+    if (uiTemplate.size() == 0) {
+      return;
+    }
+    NativeModuleRegistry nMR;
+    auto tree = UITemplateProcessor::buildShadowTree(
+        uiTemplate,
+        surfaceId,
+        folly::dynamic::object(),
+        *componentDescriptorRegistry_,
+        nMR);
+
+    shadowTreeRegistry_.get(surfaceId, [=](const ShadowTree &shadowTree) {
+      shadowTree.complete(
+          std::make_shared<SharedShadowNodeList>(SharedShadowNodeList{tree}));
+    });
+  } catch (const std::exception &e) {
+    LOG(ERROR) << "    >>>> EXCEPTION <<<  rendering uiTemplate in "
+               << "Scheduler::renderTemplateToSurface: " << e.what();
+  }
+}
+
+void Scheduler::stopSurface(SurfaceId surfaceId) const {
+  shadowTreeRegistry_.get(surfaceId, [](const ShadowTree &shadowTree) {
+    // As part of stopping the Surface, we have to commit an empty tree.
+    shadowTree.complete(std::const_pointer_cast<SharedShadowNodeList>(
+        ShadowNode::emptySharedShadowNodeSharedList()));
+  });
+
+  auto shadowTree = shadowTreeRegistry_.remove(surfaceId);
   shadowTree->setDelegate(nullptr);
-  shadowTreeRegistry_.erase(iterator);
+
+#ifndef ANDROID
+  runtimeExecutor_([=](jsi::Runtime &runtime) {
+    uiManagerBinding_->stopSurface(runtime, surfaceId);
+  });
+#endif
 }
 
-Size Scheduler::measure(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const {
-  const auto &shadowTree = shadowTreeRegistry_.at(rootTag);
-  assert(shadowTree);
-  return shadowTree->measure(layoutConstraints, layoutContext);
+Size Scheduler::measureSurface(
+    SurfaceId surfaceId,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  Size size;
+  shadowTreeRegistry_.get(surfaceId, [&](const ShadowTree &shadowTree) {
+    size = shadowTree.measure(layoutConstraints, layoutContext);
+  });
+  return size;
 }
 
-void Scheduler::constraintLayout(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) {
-  const auto &shadowTree = shadowTreeRegistry_.at(rootTag);
-  assert(shadowTree);
-  return shadowTree->constraintLayout(layoutConstraints, layoutContext);
+void Scheduler::constraintSurfaceLayout(
+    SurfaceId surfaceId,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  shadowTreeRegistry_.get(surfaceId, [&](const ShadowTree &shadowTree) {
+    shadowTree.synchronize([&]() {
+      shadowTree.constraintLayout(layoutConstraints, layoutContext);
+    });
+  });
 }
 
 #pragma mark - Delegate
@@ -70,32 +157,39 @@ SchedulerDelegate *Scheduler::getDelegate() const {
 
 #pragma mark - ShadowTreeDelegate
 
-void Scheduler::shadowTreeDidCommit(const SharedShadowTree &shadowTree, const TreeMutationInstructionList &instructions) {
+void Scheduler::shadowTreeDidCommit(
+    const ShadowTree &shadowTree,
+    const ShadowViewMutationList &mutations) const {
   if (delegate_) {
-    delegate_->schedulerDidComputeMutationInstructions(shadowTree->getRootTag(), instructions);
+    delegate_->schedulerDidFinishTransaction(
+        shadowTree.getSurfaceId(), mutations);
   }
 }
 
 #pragma mark - UIManagerDelegate
 
-void Scheduler::uiManagerDidFinishTransaction(Tag rootTag, const SharedShadowNodeUnsharedList &rootChildNodes) {
-  const auto &iterator = shadowTreeRegistry_.find(rootTag);
-  const auto &shadowTree = iterator->second;
-  assert(shadowTree);
-  return shadowTree->complete(rootChildNodes);
+void Scheduler::uiManagerDidFinishTransaction(
+    SurfaceId surfaceId,
+    const SharedShadowNodeUnsharedList &rootChildNodes) {
+  shadowTreeRegistry_.get(surfaceId, [&](const ShadowTree &shadowTree) {
+    shadowTree.complete(rootChildNodes);
+  });
 }
 
-void Scheduler::uiManagerDidCreateShadowNode(const SharedShadowNode &shadowNode) {
+void Scheduler::uiManagerDidCreateShadowNode(
+    const SharedShadowNode &shadowNode) {
   if (delegate_) {
-    delegate_->schedulerDidRequestPreliminaryViewAllocation(shadowNode->getComponentName());
+    auto layoutableShadowNode =
+        dynamic_cast<const LayoutableShadowNode *>(shadowNode.get());
+    auto isLayoutable = layoutableShadowNode != nullptr;
+
+    delegate_->schedulerDidRequestPreliminaryViewAllocation(
+        shadowNode->getRootTag(),
+        shadowNode->getComponentName(),
+        isLayoutable,
+        shadowNode->getComponentHandle());
   }
 }
 
-#pragma mark - Deprecated
-
-std::shared_ptr<FabricUIManager> Scheduler::getUIManager_DO_NOT_USE() {
-  return uiManager_;
-}
-
 } // namespace react
 } // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/Scheduler.h b/ReactCommon/fabric/uimanager/Scheduler.h
index f603b5778adb33..ac798133307b56 100644
--- a/ReactCommon/fabric/uimanager/Scheduler.h
+++ b/ReactCommon/fabric/uimanager/Scheduler.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -6,40 +6,62 @@
 #pragma once
 
 #include <memory>
-
-#include <fabric/core/ComponentDescriptor.h>
-#include <fabric/core/LayoutConstraints.h>
-#include <fabric/uimanager/ContextContainer.h>
-#include <fabric/uimanager/SchedulerDelegate.h>
-#include <fabric/uimanager/SchedulerEventDispatcher.h>
-#include <fabric/uimanager/UIManagerDelegate.h>
-#include <fabric/uimanager/ShadowTree.h>
-#include <fabric/uimanager/ShadowTreeDelegate.h>
+#include <mutex>
+
+#include <react/core/ComponentDescriptor.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+#include <react/uimanager/ContextContainer.h>
+#include <react/uimanager/SchedulerDelegate.h>
+#include <react/uimanager/ShadowTree.h>
+#include <react/uimanager/ShadowTreeDelegate.h>
+#include <react/uimanager/ShadowTreeRegistry.h>
+#include <react/uimanager/UIManagerBinding.h>
+#include <react/uimanager/UIManagerDelegate.h>
+#include <react/uimanager/primitives.h>
 
 namespace facebook {
 namespace react {
 
-class FabricUIManager;
-
 /*
  * Scheduler coordinates Shadow Tree updates and event flows.
  */
-class Scheduler final:
-  public UIManagerDelegate,
-  public ShadowTreeDelegate {
-
-public:
-
+class Scheduler final : public UIManagerDelegate, public ShadowTreeDelegate {
+ public:
   Scheduler(const SharedContextContainer &contextContainer);
   ~Scheduler();
 
-#pragma mark - Shadow Tree Management
+#pragma mark - Surface Management
+
+  void startSurface(
+      SurfaceId surfaceId,
+      const std::string &moduleName,
+      const folly::dynamic &initialProps,
+      const LayoutConstraints &layoutConstraints = {},
+      const LayoutContext &layoutContext = {}) const;
+
+  void renderTemplateToSurface(
+      SurfaceId surfaceId,
+      const std::string &uiTemplate);
+
+  void stopSurface(SurfaceId surfaceId) const;
 
-  void registerRootTag(Tag rootTag);
-  void unregisterRootTag(Tag rootTag);
+  Size measureSurface(
+      SurfaceId surfaceId,
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext) const;
 
-  Size measure(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const;
-  void constraintLayout(const Tag &rootTag, const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext);
+  /*
+   * Applies given `layoutConstraints` and `layoutContext` to a Surface.
+   * The user interface will be relaid out as a result. The operation will be
+   * performed synchronously (including mounting) if the method is called
+   * on the main thread.
+   * Can be called from any thread.
+   */
+  void constraintSurfaceLayout(
+      SurfaceId surfaceId,
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext) const;
 
 #pragma mark - Delegate
 
@@ -53,27 +75,25 @@ class Scheduler final:
 
 #pragma mark - UIManagerDelegate
 
-  void uiManagerDidFinishTransaction(Tag rootTag, const SharedShadowNodeUnsharedList &rootChildNodes) override;
-  void uiManagerDidCreateShadowNode(const SharedShadowNode &shadowNode) override;
+  void uiManagerDidFinishTransaction(
+      SurfaceId surfaceId,
+      const SharedShadowNodeUnsharedList &rootChildNodes) override;
+  void uiManagerDidCreateShadowNode(
+      const SharedShadowNode &shadowNode) override;
 
 #pragma mark - ShadowTreeDelegate
 
-  void shadowTreeDidCommit(const SharedShadowTree &shadowTree, const TreeMutationInstructionList &instructions) override;
-
-#pragma mark - Deprecated
-
-  /*
-   * UIManager instance must be temporarily exposed for registration purposes.
-   */
-  std::shared_ptr<FabricUIManager> getUIManager_DO_NOT_USE();
-
-private:
+  void shadowTreeDidCommit(
+      const ShadowTree &shadowTree,
+      const ShadowViewMutationList &mutations) const override;
 
+ private:
   SchedulerDelegate *delegate_;
-  std::shared_ptr<FabricUIManager> uiManager_;
-  std::unordered_map<Tag, SharedShadowTree> shadowTreeRegistry_;
-  SharedSchedulerEventDispatcher eventDispatcher_;
+  SharedComponentDescriptorRegistry componentDescriptorRegistry_;
+  ShadowTreeRegistry shadowTreeRegistry_;
   SharedContextContainer contextContainer_;
+  RuntimeExecutor runtimeExecutor_;
+  std::shared_ptr<UIManagerBinding> uiManagerBinding_;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/SchedulerDelegate.h b/ReactCommon/fabric/uimanager/SchedulerDelegate.h
index a6e98dae6cb4b6..8215333295d781 100644
--- a/ReactCommon/fabric/uimanager/SchedulerDelegate.h
+++ b/ReactCommon/fabric/uimanager/SchedulerDelegate.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -7,9 +7,9 @@
 
 #include <memory>
 
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/uimanager/TreeMutationInstruction.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/ShadowNode.h>
+#include <react/uimanager/ShadowViewMutation.h>
 
 namespace facebook {
 namespace react {
@@ -18,21 +18,26 @@ namespace react {
  * Abstract class for Scheduler's delegate.
  */
 class SchedulerDelegate {
-public:
-
-  virtual ~SchedulerDelegate() = default;
-
+ public:
   /*
    * Called right after Scheduler computed (and laid out) a new updated version
-   * of the tree and calculated a set of mutation instructions which are
-   * suffisient to construct a new one.
+   * of the tree and calculated a set of mutations which are suffisient
+   * to construct a new one.
    */
-  virtual void schedulerDidComputeMutationInstructions(Tag rootTag, const TreeMutationInstructionList &instructions) = 0;
+  virtual void schedulerDidFinishTransaction(
+      Tag rootTag,
+      const ShadowViewMutationList &mutations) = 0;
 
   /*
    * Called right after a new ShadowNode was created.
    */
-  virtual void schedulerDidRequestPreliminaryViewAllocation(ComponentName componentName) = 0;
+  virtual void schedulerDidRequestPreliminaryViewAllocation(
+      SurfaceId surfaceId,
+      ComponentName componentName,
+      bool isLayoutable,
+      ComponentHandle componentHandle) = 0;
+
+  virtual ~SchedulerDelegate() noexcept = default;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.cpp b/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.cpp
deleted file mode 100644
index f261499326ba83..00000000000000
--- a/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "SchedulerEventDispatcher.h"
-
-namespace facebook {
-namespace react {
-
-// TODO(T29874519): Get rid of "top" prefix once and for all.
-/*
- * Capitalizes the first letter of the event type and adds "top" prefix
- * (e.g. "layout" becames "topLayout").
- */
-static std::string normalizeEventType(const std::string &type) {
-  std::string prefixedType = type;
-  prefixedType[0] = toupper(prefixedType[0]);
-  prefixedType.insert(0, "top");
-  return prefixedType;
-}
-
-void SchedulerEventDispatcher::setUIManager(std::shared_ptr<const FabricUIManager> uiManager) const {
-  uiManager_ = uiManager;
-}
-
-void SchedulerEventDispatcher::dispatchEvent(
-  const EventTarget &eventTarget,
-  const std::string &type,
-  const folly::dynamic &payload,
-  const EventPriority &priority
-) const {
-  if (!uiManager_) {
-    return;
-  }
-  // TODO: Schedule the event based on priority.
-  uiManager_->dispatchEventToTarget(eventTarget, normalizeEventType(type), payload);
-}
-
-void SchedulerEventDispatcher::releaseEventTarget(const EventTarget &eventTarget) const {
-  if (!uiManager_) {
-    return;
-  }
-  // TODO(shergin): This needs to move to the destructor of EventEmitter. For now we'll leak.
-  // uiManager_->releaseEventTarget(eventTarget);
-}
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.h b/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.h
deleted file mode 100644
index 4ce85faef0f155..00000000000000
--- a/ReactCommon/fabric/uimanager/SchedulerEventDispatcher.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <fabric/events/EventDispatcher.h>
-#include <fabric/events/primitives.h>
-#include <fabric/uimanager/FabricUIManager.h>
-#include <folly/dynamic.h>
-
-namespace facebook {
-namespace react {
-
-class SchedulerEventDispatcher;
-
-using SharedSchedulerEventDispatcher = std::shared_ptr<const SchedulerEventDispatcher>;
-
-/*
- * Concrete EventDispatcher.
- */
-class SchedulerEventDispatcher final:
-  public EventDispatcher {
-
-public:
-
-  void setUIManager(std::shared_ptr<const FabricUIManager> uiManager) const;
-
-#pragma mark - EventDispatcher
-
-  void dispatchEvent(
-    const EventTarget &eventTarget,
-    const std::string &type,
-    const folly::dynamic &payload,
-    const EventPriority &priority
-  ) const override;
-
-
-  void releaseEventTarget(const EventTarget &eventTarget) const override;
-
-private:
-
-  // TODO: consider using std::weak_ptr<> instead for better memory management.
-  mutable std::shared_ptr<const FabricUIManager> uiManager_;
-};
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowTree.cpp b/ReactCommon/fabric/uimanager/ShadowTree.cpp
index 1a1df2c48ffba8..48823af51bbf72 100644
--- a/ReactCommon/fabric/uimanager/ShadowTree.cpp
+++ b/ReactCommon/fabric/uimanager/ShadowTree.cpp
@@ -1,165 +1,205 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #include "ShadowTree.h"
 
-#include <fabric/core/LayoutContext.h>
-#include <fabric/core/LayoutPrimitives.h>
+#include <react/core/LayoutContext.h>
+#include <react/core/LayoutPrimitives.h>
 
-#include "ShadowTreeDelegate.h"
 #include "Differentiator.h"
-#include "TreeMutationInstruction.h"
+#include "ShadowTreeDelegate.h"
+#include "ShadowViewMutation.h"
 
 namespace facebook {
 namespace react {
 
-ShadowTree::ShadowTree(Tag rootTag):
-  rootTag_(rootTag) {
+ShadowTree::ShadowTree(
+    SurfaceId surfaceId,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext)
+    : surfaceId_(surfaceId) {
+  const auto noopEventEmitter = std::make_shared<const ViewEventEmitter>(
+      nullptr, -1, std::shared_ptr<const EventDispatcher>());
+
+  const auto props = std::make_shared<const RootProps>(
+      *RootShadowNode::defaultSharedProps(), layoutConstraints, layoutContext);
 
-  const auto noopEventEmitter = std::make_shared<const ViewEventEmitter>(nullptr, rootTag, nullptr);
   rootShadowNode_ = std::make_shared<RootShadowNode>(
-    ShadowNodeFragment {
-      .tag = rootTag,
-      .rootTag = rootTag,
-      .props = RootShadowNode::defaultSharedProps(),
-      .eventEmitter = noopEventEmitter,
-      .children = ShadowNode::emptySharedShadowNodeSharedList(),
-    },
-    nullptr
-  );
+      ShadowNodeFragment{
+          .tag = surfaceId,
+          .rootTag = surfaceId,
+          .props = props,
+          .eventEmitter = noopEventEmitter,
+      },
+      nullptr);
+}
+
+ShadowTree::~ShadowTree() {
+  complete(std::make_shared<SharedShadowNodeList>(SharedShadowNodeList{}));
 }
 
-Tag ShadowTree::getRootTag() const {
-  return rootTag_;
+Tag ShadowTree::getSurfaceId() const {
+  return surfaceId_;
+}
+
+SharedRootShadowNode ShadowTree::getRootShadowNode() const {
+  std::lock_guard<std::recursive_mutex> lock(commitMutex_);
+  return rootShadowNode_;
+}
+
+void ShadowTree::synchronize(std::function<void(void)> function) const {
+  std::lock_guard<std::recursive_mutex> lock(commitMutex_);
+  function();
 }
 
 #pragma mark - Layout
 
-Size ShadowTree::measure(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const {
-  auto newRootShadowNode = cloneRootShadowNode(layoutConstraints, layoutContext);
+Size ShadowTree::measure(
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  auto newRootShadowNode = cloneRootShadowNode(
+      getRootShadowNode(), layoutConstraints, layoutContext);
   newRootShadowNode->layout();
   return newRootShadowNode->getLayoutMetrics().frame.size;
 }
 
-void ShadowTree::constraintLayout(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) {
-  auto newRootShadowNode = cloneRootShadowNode(layoutConstraints, layoutContext);
-  complete(newRootShadowNode);
+bool ShadowTree::constraintLayout(
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  auto oldRootShadowNode = getRootShadowNode();
+  auto newRootShadowNode =
+      cloneRootShadowNode(oldRootShadowNode, layoutConstraints, layoutContext);
+  return complete(oldRootShadowNode, newRootShadowNode);
 }
 
 #pragma mark - Commiting
 
-UnsharedRootShadowNode ShadowTree::cloneRootShadowNode(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const {
-  auto oldRootShadowNode = rootShadowNode_;
-  const auto &props = std::make_shared<const RootProps>(*oldRootShadowNode->getProps(), layoutConstraints, layoutContext);
-  auto newRootShadowNode =
-    std::make_shared<RootShadowNode>(*oldRootShadowNode, ShadowNodeFragment {.props = props});
+UnsharedRootShadowNode ShadowTree::cloneRootShadowNode(
+    const SharedRootShadowNode &oldRootShadowNode,
+    const LayoutConstraints &layoutConstraints,
+    const LayoutContext &layoutContext) const {
+  auto props = std::make_shared<const RootProps>(
+      *oldRootShadowNode->getProps(), layoutConstraints, layoutContext);
+  auto newRootShadowNode = std::make_shared<RootShadowNode>(
+      *oldRootShadowNode, ShadowNodeFragment{.props = props});
   return newRootShadowNode;
 }
 
-void ShadowTree::complete(const SharedShadowNodeUnsharedList &rootChildNodes) {
-  auto oldRootShadowNode = rootShadowNode_;
-  auto newRootShadowNode =
-    std::make_shared<RootShadowNode>(
+bool ShadowTree::complete(
+    const SharedShadowNodeUnsharedList &rootChildNodes) const {
+  auto oldRootShadowNode = getRootShadowNode();
+  auto newRootShadowNode = std::make_shared<RootShadowNode>(
       *oldRootShadowNode,
-      ShadowNodeFragment {
-        .children = SharedShadowNodeSharedList(rootChildNodes)
-      }
-    );
+      ShadowNodeFragment{.children =
+                             SharedShadowNodeSharedList(rootChildNodes)});
 
-  complete(newRootShadowNode);
+  return complete(oldRootShadowNode, newRootShadowNode);
 }
 
-void ShadowTree::complete(UnsharedRootShadowNode newRootShadowNode) {
-  SharedRootShadowNode oldRootShadowNode = rootShadowNode_;
-
+bool ShadowTree::complete(
+    const SharedRootShadowNode &oldRootShadowNode,
+    const UnsharedRootShadowNode &newRootShadowNode) const {
   newRootShadowNode->layout();
-
   newRootShadowNode->sealRecursive();
 
-  TreeMutationInstructionList instructions = TreeMutationInstructionList();
+  auto mutations =
+      calculateShadowViewMutations(*oldRootShadowNode, *newRootShadowNode);
 
-  calculateMutationInstructions(
-    instructions,
-    oldRootShadowNode,
-    newRootShadowNode
-  );
+  if (!commit(oldRootShadowNode, newRootShadowNode, mutations)) {
+    return false;
+  }
 
-  if (commit(oldRootShadowNode, newRootShadowNode)) {
-    emitLayoutEvents(instructions);
+  emitLayoutEvents(mutations);
 
-    if (delegate_) {
-      delegate_->shadowTreeDidCommit(shared_from_this(), instructions);
-    }
+  if (delegate_) {
+    delegate_->shadowTreeDidCommit(*this, mutations);
   }
+
+  return true;
 }
 
-bool ShadowTree::commit(const SharedRootShadowNode &oldRootShadowNode, const SharedRootShadowNode &newRootShadowNode) {
-  std::lock_guard<std::mutex> lock(commitMutex_);
+bool ShadowTree::commit(
+    const SharedRootShadowNode &oldRootShadowNode,
+    const SharedRootShadowNode &newRootShadowNode,
+    const ShadowViewMutationList &mutations) const {
+  std::lock_guard<std::recursive_mutex> lock(commitMutex_);
 
   if (oldRootShadowNode != rootShadowNode_) {
     return false;
   }
 
   rootShadowNode_ = newRootShadowNode;
+
+  toggleEventEmitters(mutations);
+
   return true;
 }
 
-void ShadowTree::emitLayoutEvents(const TreeMutationInstructionList &instructions) {
-  for (const auto &instruction : instructions) {
-    const auto &type = instruction.getType();
-
-    // Only `Insertion` and `Replacement` instructions can affect layout metrics.
-    if (
-        type == TreeMutationInstruction::Insertion ||
-        type == TreeMutationInstruction::Replacement
-    ) {
-      const auto &newShadowNode = instruction.getNewChildNode();
-      const auto &eventEmitter = newShadowNode->getEventEmitter();
-      const auto &viewEventEmitter = std::dynamic_pointer_cast<const ViewEventEmitter>(eventEmitter);
-
-      // Checking if particular shadow node supports `onLayout` event (part of `ViewEventEmitter`).
-      if (viewEventEmitter) {
-        // Now we know that both (old and new) shadow nodes must be `LayoutableShadowNode` subclasses.
-        assert(std::dynamic_pointer_cast<const LayoutableShadowNode>(newShadowNode));
-
-        // Checking if the `onLayout` event was requested for the particular Shadow Node.
-        const auto &viewProps = std::dynamic_pointer_cast<const ViewProps>(newShadowNode->getProps());
-        if (viewProps && !viewProps->onLayout) {
-          continue;
-        }
-
-        // TODO(T29661055): Consider using `std::reinterpret_pointer_cast`.
-        const auto &newLayoutableShadowNode =
-          std::dynamic_pointer_cast<const LayoutableShadowNode>(newShadowNode);
-
-        // In case if we have `oldShadowNode`, we have to check that layout metrics have changed.
-        if (type == TreeMutationInstruction::Replacement) {
-          const auto &oldShadowNode = instruction.getOldChildNode();
-          assert(std::dynamic_pointer_cast<const LayoutableShadowNode>(oldShadowNode));
-          // TODO(T29661055): Consider using `std::reinterpret_pointer_cast`.
-          const auto &oldLayoutableShadowNode =
-            std::dynamic_pointer_cast<const LayoutableShadowNode>(oldShadowNode);
-
-          if (oldLayoutableShadowNode->getLayoutMetrics() == newLayoutableShadowNode->getLayoutMetrics()) {
-            continue;
-          }
-        }
-
-        viewEventEmitter->onLayout(newLayoutableShadowNode->getLayoutMetrics());
-      }
+void ShadowTree::emitLayoutEvents(
+    const ShadowViewMutationList &mutations) const {
+  for (const auto &mutation : mutations) {
+    // Only `Insert` and `Update` mutations can affect layout metrics.
+    if (mutation.type != ShadowViewMutation::Insert &&
+        mutation.type != ShadowViewMutation::Update) {
+      continue;
+    }
+
+    const auto viewEventEmitter =
+        std::dynamic_pointer_cast<const ViewEventEmitter>(
+            mutation.newChildShadowView.eventEmitter);
+
+    // Checking if particular shadow node supports `onLayout` event (part of
+    // `ViewEventEmitter`).
+    if (!viewEventEmitter) {
+      continue;
+    }
+
+    // Checking if the `onLayout` event was requested for the particular Shadow
+    // Node.
+    const auto viewProps = std::dynamic_pointer_cast<const ViewProps>(
+        mutation.newChildShadowView.props);
+    if (viewProps && !viewProps->onLayout) {
+      continue;
+    }
+
+    // In case if we have `oldChildShadowView`, checking that layout metrics
+    // have changed.
+    if (mutation.type != ShadowViewMutation::Update &&
+        mutation.oldChildShadowView.layoutMetrics ==
+            mutation.newChildShadowView.layoutMetrics) {
+      continue;
+    }
+
+    viewEventEmitter->onLayout(mutation.newChildShadowView.layoutMetrics);
+  }
+}
+
+void ShadowTree::toggleEventEmitters(
+    const ShadowViewMutationList &mutations) const {
+  std::lock_guard<std::recursive_mutex> lock(EventEmitter::DispatchMutex());
+
+  for (const auto &mutation : mutations) {
+    if (mutation.type == ShadowViewMutation::Create) {
+      mutation.newChildShadowView.eventEmitter->enable();
+    }
+  }
+
+  for (const auto &mutation : mutations) {
+    if (mutation.type == ShadowViewMutation::Delete) {
+      mutation.oldChildShadowView.eventEmitter->disable();
     }
   }
 }
 
 #pragma mark - Delegate
 
-void ShadowTree::setDelegate(ShadowTreeDelegate *delegate) {
+void ShadowTree::setDelegate(ShadowTreeDelegate const *delegate) {
   delegate_ = delegate;
 }
 
-ShadowTreeDelegate *ShadowTree::getDelegate() const {
+ShadowTreeDelegate const *ShadowTree::getDelegate() const {
   return delegate_;
 }
 
diff --git a/ReactCommon/fabric/uimanager/ShadowTree.h b/ReactCommon/fabric/uimanager/ShadowTree.h
index 4366fc8d4510d0..a7398699df698f 100644
--- a/ReactCommon/fabric/uimanager/ShadowTree.h
+++ b/ReactCommon/fabric/uimanager/ShadowTree.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
@@ -8,60 +8,79 @@
 #include <memory>
 #include <mutex>
 
-#include <fabric/components/root/RootShadowNode.h>
-#include <fabric/core/LayoutConstraints.h>
-#include <fabric/core/ReactPrimitives.h>
-#include <fabric/core/ShadowNode.h>
-#include <fabric/uimanager/ShadowTreeDelegate.h>
+#include <react/components/root/RootShadowNode.h>
+#include <react/core/LayoutConstraints.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/ShadowNode.h>
+#include <react/uimanager/ShadowTreeDelegate.h>
+#include <react/uimanager/ShadowViewMutation.h>
 
 namespace facebook {
 namespace react {
 
-class ShadowTree;
-
-using SharedShadowTree = std::shared_ptr<ShadowTree>;
-
 /*
  * Represents the shadow tree and its lifecycle.
  */
-class ShadowTree final:
-  public std::enable_shared_from_this<ShadowTree> {
+class ShadowTree final {
+ public:
+  /*
+   * Creates a new shadow tree instance.
+   */
+  ShadowTree(
+      SurfaceId surfaceId,
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext);
 
-public:
+  ~ShadowTree();
 
   /*
-   * Creates a new shadow tree instance with given `rootTag`.
+   * Returns the `SurfaceId` associated with the shadow tree.
    */
-  ShadowTree(Tag rootTag);
+  SurfaceId getSurfaceId() const;
 
   /*
-   * Returns the rootTag associated with the shadow tree (the tag of the
-   * root shadow node).
+   * Synchronously runs `function` when `commitMutex_` is acquired.
+   * It is useful in cases when transactional consistency and/or successful
+   * commit are required. E.g. you might want to run `measure` and
+   * `constraintLayout` as part of a single congious transaction.
+   * Use this only if it is necessary. All public methods of the class are
+   * already thread-safe.
    */
-  Tag getRootTag() const;
+  void synchronize(std::function<void(void)> function) const;
 
 #pragma mark - Layout
 
   /*
-   * Measures the shadow tree with given `layoutConstraints` and `layoutContext`.
-   * Can be called from any thread, side-effect-less.
+   * Measures the shadow tree with given `layoutConstraints` and
+   * `layoutContext`. Can be called from any thread, side-effect-less.
    */
-  Size measure(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const;
+  Size measure(
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext) const;
 
   /*
    * Applies given `layoutConstraints` and `layoutContext` and commit
    * the new shadow tree.
+   * Returns `true` if the operation finished successfully.
    * Can be called from any thread.
    */
-  void constraintLayout(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext);
+  bool constraintLayout(
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext) const;
 
 #pragma mark - Application
 
   /*
    * Create a new shadow tree with given `rootChildNodes` and commit.
    * Can be called from any thread.
+   * Returns `true` if the operation finished successfully.
+   */
+  bool complete(const SharedShadowNodeUnsharedList &rootChildNodes) const;
+
+  /*
+   * Returns a root shadow node that represents the last committed three.
    */
-  void complete(const SharedShadowNodeUnsharedList &rootChildNodes);
+  SharedRootShadowNode getRootShadowNode() const;
 
 #pragma mark - Delegate
 
@@ -70,20 +89,31 @@ class ShadowTree final:
    * The delegate is stored as a raw pointer, so the owner must null
    * the pointer before being destroyed.
    */
-  void setDelegate(ShadowTreeDelegate *delegate);
-  ShadowTreeDelegate *getDelegate() const;
-
-private:
-
-  UnsharedRootShadowNode cloneRootShadowNode(const LayoutConstraints &layoutConstraints, const LayoutContext &layoutContext) const;
-  void complete(UnsharedRootShadowNode newRootShadowNode);
-  bool commit(const SharedRootShadowNode &oldRootShadowNode, const SharedRootShadowNode &newRootShadowNode);
-  void emitLayoutEvents(const TreeMutationInstructionList &instructions);
-
-  const Tag rootTag_;
-  SharedRootShadowNode rootShadowNode_;
-  ShadowTreeDelegate *delegate_;
-  mutable std::mutex commitMutex_;
+  void setDelegate(ShadowTreeDelegate const *delegate);
+  ShadowTreeDelegate const *getDelegate() const;
+
+ private:
+  UnsharedRootShadowNode cloneRootShadowNode(
+      const SharedRootShadowNode &oldRootShadowNode,
+      const LayoutConstraints &layoutConstraints,
+      const LayoutContext &layoutContext) const;
+
+  bool complete(
+      const SharedRootShadowNode &oldRootShadowNode,
+      const UnsharedRootShadowNode &newRootShadowNode) const;
+
+  bool commit(
+      const SharedRootShadowNode &oldRootShadowNode,
+      const SharedRootShadowNode &newRootShadowNode,
+      const ShadowViewMutationList &mutations) const;
+
+  void toggleEventEmitters(const ShadowViewMutationList &mutations) const;
+  void emitLayoutEvents(const ShadowViewMutationList &mutations) const;
+
+  const SurfaceId surfaceId_;
+  mutable SharedRootShadowNode rootShadowNode_; // Protected by `commitMutex_`.
+  ShadowTreeDelegate const *delegate_;
+  mutable std::recursive_mutex commitMutex_;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/ShadowTreeDelegate.h b/ReactCommon/fabric/uimanager/ShadowTreeDelegate.h
index f2da57031b044b..e4d14018405ca2 100644
--- a/ReactCommon/fabric/uimanager/ShadowTreeDelegate.h
+++ b/ReactCommon/fabric/uimanager/ShadowTreeDelegate.h
@@ -1,11 +1,11 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 #pragma once
 
-#include <fabric/uimanager/TreeMutationInstruction.h>
+#include <react/uimanager/ShadowViewMutation.h>
 
 namespace facebook {
 namespace react {
@@ -16,12 +16,15 @@ class ShadowTree;
  * Abstract class for ShadowTree's delegate.
  */
 class ShadowTreeDelegate {
-public:
-
+ public:
   /*
    * Called right after Shadow Tree commit a new state of the the tree.
    */
-  virtual void shadowTreeDidCommit(const std::shared_ptr<ShadowTree> &shadowTree, const TreeMutationInstructionList &instructions) = 0;
+  virtual void shadowTreeDidCommit(
+      const ShadowTree &shadowTree,
+      const ShadowViewMutationList &mutations) const = 0;
+
+  virtual ~ShadowTreeDelegate() noexcept = default;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp
new file mode 100644
index 00000000000000..01a6ab7cad1351
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp
@@ -0,0 +1,40 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include "ShadowTreeRegistry.h"
+
+namespace facebook {
+namespace react {
+
+void ShadowTreeRegistry::add(std::unique_ptr<ShadowTree> &&shadowTree) const {
+  std::lock_guard<std::mutex> lock(mutex_);
+  registry_.emplace(shadowTree->getSurfaceId(), std::move(shadowTree));
+}
+
+std::unique_ptr<ShadowTree> ShadowTreeRegistry::remove(
+    SurfaceId surfaceId) const {
+  std::lock_guard<std::mutex> lock(mutex_);
+  auto iterator = registry_.find(surfaceId);
+  auto shadowTree = std::unique_ptr<ShadowTree>(iterator->second.release());
+  registry_.erase(iterator);
+  return shadowTree;
+}
+
+bool ShadowTreeRegistry::get(
+    SurfaceId surfaceId,
+    std::function<void(const ShadowTree &shadowTree)> callback) const {
+  std::lock_guard<std::mutex> lock(mutex_);
+  auto iterator = registry_.find(surfaceId);
+
+  if (iterator == registry_.end()) {
+    return false;
+  }
+
+  callback(*iterator->second);
+  return true;
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h
new file mode 100644
index 00000000000000..1bd300f1f758e5
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h
@@ -0,0 +1,55 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#pragma once
+
+#include <react/core/ReactPrimitives.h>
+#include <react/uimanager/ShadowTree.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Owning registry of `ShadowTree`s.
+ */
+class ShadowTreeRegistry final {
+ public:
+  ShadowTreeRegistry() = default;
+
+  /*
+   * Adds a `ShadowTree` instance to the registry.
+   * The ownership of the instance is also transferred to the registry.
+   * Can be called from any thread.
+   */
+  void add(std::unique_ptr<ShadowTree> &&shadowTree) const;
+
+  /*
+   * Removes a `ShadowTree` instance with given `surfaceId` from the registry
+   * and returns it as a result.
+   * The ownership of the instance is also transferred to the caller.
+   * Can be called from any thread.
+   */
+  std::unique_ptr<ShadowTree> remove(SurfaceId surfaceId) const;
+
+  /*
+   * Finds a `ShadowTree` instance with a given `surfaceId` in the registry and
+   * synchronously calls the `callback` with a reference to the instance while
+   * the mutex is being acquired.
+   * Returns `true` if the registry has `ShadowTree` instance with corresponding
+   * `surfaceId`, otherwise returns `false` without calling the `callback`.
+   * Can be called from any thread.
+   */
+  bool get(
+      SurfaceId surfaceId,
+      std::function<void(const ShadowTree &shadowTree)> callback) const;
+
+ private:
+  mutable std::mutex mutex_;
+  mutable std::unordered_map<SurfaceId, std::unique_ptr<ShadowTree>>
+      registry_; // Protected by `mutex_`.
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowView.cpp b/ReactCommon/fabric/uimanager/ShadowView.cpp
new file mode 100644
index 00000000000000..1120745c7f6d83
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowView.cpp
@@ -0,0 +1,59 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include "ShadowView.h"
+
+#include <react/core/LayoutableShadowNode.h>
+
+namespace facebook {
+namespace react {
+
+static LayoutMetrics layoutMetricsFromShadowNode(const ShadowNode &shadowNode) {
+  auto layoutableShadowNode =
+      dynamic_cast<const LayoutableShadowNode *>(&shadowNode);
+  return layoutableShadowNode ? layoutableShadowNode->getLayoutMetrics()
+                              : EmptyLayoutMetrics;
+}
+
+ShadowView::ShadowView(const ShadowNode &shadowNode)
+    : componentName(shadowNode.getComponentName()),
+      componentHandle(shadowNode.getComponentHandle()),
+      tag(shadowNode.getTag()),
+      props(shadowNode.getProps()),
+      eventEmitter(shadowNode.getEventEmitter()),
+      layoutMetrics(layoutMetricsFromShadowNode(shadowNode)),
+      localData(shadowNode.getLocalData()) {}
+
+bool ShadowView::operator==(const ShadowView &rhs) const {
+  return std::tie(
+             this->tag,
+             this->componentName,
+             this->props,
+             this->eventEmitter,
+             this->layoutMetrics,
+             this->localData) ==
+      std::tie(
+             rhs.tag,
+             rhs.componentName,
+             rhs.props,
+             rhs.eventEmitter,
+             rhs.layoutMetrics,
+             rhs.localData);
+}
+
+bool ShadowView::operator!=(const ShadowView &rhs) const {
+  return !(*this == rhs);
+}
+
+bool ShadowViewNodePair::operator==(const ShadowViewNodePair &rhs) const {
+  return &this->shadowNode == &rhs.shadowNode;
+}
+
+bool ShadowViewNodePair::operator!=(const ShadowViewNodePair &rhs) const {
+  return !(*this == rhs);
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowView.h b/ReactCommon/fabric/uimanager/ShadowView.h
new file mode 100644
index 00000000000000..867fdc235bffb6
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowView.h
@@ -0,0 +1,61 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+#pragma once
+
+#include <react/core/LayoutMetrics.h>
+#include <react/core/LocalData.h>
+#include <react/core/Props.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/ShadowNode.h>
+#include <react/events/EventEmitter.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Describes a view that can be mounted.
+ */
+struct ShadowView final {
+  ShadowView() = default;
+  ShadowView(const ShadowView &shadowView) = default;
+
+  /*
+   * Constructs a `ShadowView` from given `ShadowNode`.
+   */
+  explicit ShadowView(const ShadowNode &shadowNode);
+
+  ShadowView &operator=(const ShadowView &other) = default;
+
+  bool operator==(const ShadowView &rhs) const;
+  bool operator!=(const ShadowView &rhs) const;
+
+  ComponentName componentName = "";
+  ComponentHandle componentHandle = 0;
+  Tag tag = -1;
+  SharedProps props = {};
+  SharedEventEmitter eventEmitter = {};
+  LayoutMetrics layoutMetrics = EmptyLayoutMetrics;
+  SharedLocalData localData = {};
+};
+
+/*
+ * Describes pair of a `ShadowView` and a `ShadowNode`.
+ */
+struct ShadowViewNodePair final {
+  const ShadowView shadowView;
+  const ShadowNode &shadowNode;
+
+  /*
+   * The stored pointer to `ShadowNode` represents an indentity of the pair.
+   */
+  bool operator==(const ShadowViewNodePair &rhs) const;
+  bool operator!=(const ShadowViewNodePair &rhs) const;
+};
+
+using ShadowViewNodePairList = std::vector<ShadowViewNodePair>;
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowViewMutation.cpp b/ReactCommon/fabric/uimanager/ShadowViewMutation.cpp
new file mode 100644
index 00000000000000..023107a5fa95e0
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowViewMutation.cpp
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "ShadowViewMutation.h"
+
+namespace facebook {
+namespace react {
+
+ShadowViewMutation ShadowViewMutation::CreateMutation(ShadowView shadowView) {
+  return ShadowViewMutation{
+      .type = Create, .newChildShadowView = shadowView, .index = -1};
+}
+
+ShadowViewMutation ShadowViewMutation::DeleteMutation(ShadowView shadowView) {
+  return {.type = Delete, .oldChildShadowView = shadowView, .index = -1};
+}
+
+ShadowViewMutation ShadowViewMutation::InsertMutation(
+    ShadowView parentShadowView,
+    ShadowView childShadowView,
+    int index) {
+  return {.type = Insert,
+          .parentShadowView = parentShadowView,
+          .newChildShadowView = childShadowView,
+          .index = index};
+}
+
+ShadowViewMutation ShadowViewMutation::RemoveMutation(
+    ShadowView parentShadowView,
+    ShadowView childShadowView,
+    int index) {
+  return {.type = Remove,
+          .parentShadowView = parentShadowView,
+          .oldChildShadowView = childShadowView,
+          .index = index};
+}
+
+ShadowViewMutation ShadowViewMutation::UpdateMutation(
+    ShadowView parentShadowView,
+    ShadowView oldChildShadowView,
+    ShadowView newChildShadowView,
+    int index) {
+  return {.type = Update,
+          .parentShadowView = parentShadowView,
+          .oldChildShadowView = oldChildShadowView,
+          .newChildShadowView = newChildShadowView,
+          .index = index};
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/ShadowViewMutation.h b/ReactCommon/fabric/uimanager/ShadowViewMutation.h
new file mode 100644
index 00000000000000..b5d452bc8d4ef2
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/ShadowViewMutation.h
@@ -0,0 +1,77 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <vector>
+
+#include <react/uimanager/ShadowView.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Describes a single native view tree mutation which may contain
+ * pointers to an old shadow view, a new shadow view, a parent shadow view and
+ * final index of inserted or updated view.
+ * Use static methods to instantiate mutations of different types.
+ */
+struct ShadowViewMutation final {
+#pragma mark - Designated Initializers
+
+  /*
+   * Creates and returns an `Create` mutation.
+   */
+  static ShadowViewMutation CreateMutation(ShadowView shadowView);
+
+  /*
+   * Creates and returns an `Delete` mutation.
+   */
+  static ShadowViewMutation DeleteMutation(ShadowView shadowView);
+
+  /*
+   * Creates and returns an `Insert` mutation.
+   */
+  static ShadowViewMutation InsertMutation(
+      ShadowView parentShadowView,
+      ShadowView childShadowView,
+      int index);
+
+  /*
+   * Creates and returns a `Remove` mutation.
+   */
+  static ShadowViewMutation RemoveMutation(
+      ShadowView parentShadowView,
+      ShadowView childShadowView,
+      int index);
+
+  /*
+   * Creates and returns an `Update` mutation.
+   */
+  static ShadowViewMutation UpdateMutation(
+      ShadowView parentShadowView,
+      ShadowView oldChildShadowView,
+      ShadowView newChildShadowView,
+      int index);
+
+#pragma mark - Type
+
+  enum Type { Create, Delete, Insert, Remove, Update };
+
+#pragma mark - Fields
+
+  Type type = {Create};
+  ShadowView parentShadowView = {};
+  ShadowView oldChildShadowView = {};
+  ShadowView newChildShadowView = {};
+  int index = {};
+};
+
+using ShadowViewMutationList = std::vector<ShadowViewMutation>;
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/TreeMutationInstruction.cpp b/ReactCommon/fabric/uimanager/TreeMutationInstruction.cpp
deleted file mode 100644
index 630e13202d1b53..00000000000000
--- a/ReactCommon/fabric/uimanager/TreeMutationInstruction.cpp
+++ /dev/null
@@ -1,203 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "TreeMutationInstruction.h"
-
-#include <fabric/debug/DebugStringConvertibleItem.h>
-
-namespace facebook {
-namespace react {
-
-const TreeMutationInstruction TreeMutationInstruction::Create(
-  SharedShadowNode node
-) {
-  assert(node);
-
-  return TreeMutationInstruction(
-    Creation,
-    nullptr,
-    nullptr,
-    node,
-    -1
-  );
-}
-
-const TreeMutationInstruction TreeMutationInstruction::Delete(
-  SharedShadowNode node
-) {
-  assert(node);
-
-  return TreeMutationInstruction(
-    Deletion,
-    nullptr,
-    node,
-    nullptr,
-    -1
-  );
-}
-
-const TreeMutationInstruction TreeMutationInstruction::Insert(
-  SharedShadowNode parentNode,
-  SharedShadowNode childNode,
-  int index
-) {
-  assert(parentNode);
-  assert(childNode);
-  assert(index != -1);
-
-  return TreeMutationInstruction(
-    Insertion,
-    parentNode,
-    nullptr,
-    childNode,
-    index
-  );
-}
-
-const TreeMutationInstruction TreeMutationInstruction::Remove(
-  SharedShadowNode parentNode,
-  SharedShadowNode childNode,
-  int index
-) {
-  assert(parentNode);
-  assert(childNode);
-  assert(index != -1);
-
-  return TreeMutationInstruction(
-    Removal,
-    parentNode,
-    childNode,
-    nullptr,
-    index
-  );
-}
-
-const TreeMutationInstruction TreeMutationInstruction::Replace(
-  SharedShadowNode parentNode,
-  SharedShadowNode oldChildNode,
-  SharedShadowNode newChildNode,
-  int index
-) {
-  assert(oldChildNode);
-  assert(newChildNode);
-
-  return TreeMutationInstruction(
-    Replacement,
-    parentNode,
-    oldChildNode,
-    newChildNode,
-    index
-  );
-}
-
-TreeMutationInstruction::TreeMutationInstruction(
-  Type type,
-  SharedShadowNode parentNode,
-  SharedShadowNode oldChildNode,
-  SharedShadowNode newChildNode,
-  int index
-):
-  type_(type),
-  parentNode_(parentNode),
-  oldChildNode_(oldChildNode),
-  newChildNode_(newChildNode),
-  index_(index) {};
-
-#pragma mark - Getters
-
-TreeMutationInstruction::Type TreeMutationInstruction::getType() const {
-  return type_;
-}
-
-SharedShadowNode TreeMutationInstruction::getParentNode() const {
-  assert(parentNode_);
-  return parentNode_;
-}
-
-SharedShadowNode TreeMutationInstruction::getOldChildNode() const {
-  assert(oldChildNode_);
-  return oldChildNode_;
-}
-
-SharedShadowNode TreeMutationInstruction::getNewChildNode() const {
-  assert(newChildNode_);
-  return newChildNode_;
-}
-
-int TreeMutationInstruction::getIndex() const {
-  assert(index_ != -1);
-  return index_;
-}
-
-#pragma mark - DebugStringConvertible
-
-std::string TreeMutationInstruction::getDebugName() const {
-  switch (type_) {
-    case Creation:
-      return "Create";
-    case Deletion:
-      return "Delete";
-    case Insertion:
-      return "Insert";
-    case Removal:
-      return "Remove";
-    case Replacement:
-      return "Replace";
-  }
-};
-
-std::string TreeMutationInstruction::getDebugValue() const {
-  switch (type_) {
-    case Creation:
-      return "[*" + folly::to<std::string>(newChildNode_->getTag()) + "]";
-    case Deletion:
-      return "[~" + folly::to<std::string>(oldChildNode_->getTag()) + "]";
-    case Insertion:
-      return "[" + folly::to<std::string>(newChildNode_->getTag()) + "->" + folly::to<std::string>(parentNode_->getTag()) + "]";
-    case Removal:
-      return "[" + folly::to<std::string>(oldChildNode_->getTag()) + "<~" + folly::to<std::string>(parentNode_->getTag()) + "]";
-    case Replacement:
-      return "[=" + folly::to<std::string>(oldChildNode_->getTag()) + "]";
-  }
-};
-
-SharedDebugStringConvertibleList TreeMutationInstruction::getDebugProps() const {
-  DebugStringConvertibleOptions options = {.maximumDepth = 1, .format = false};
-
-  switch (type_) {
-    case Creation:
-      return SharedDebugStringConvertibleList {
-        std::make_shared<DebugStringConvertibleItem>("node", newChildNode_->getDebugDescription(options)),
-      };
-    case Deletion:
-      return SharedDebugStringConvertibleList {
-        std::make_shared<DebugStringConvertibleItem>("node", oldChildNode_->getDebugDescription(options)),
-      };
-    case Insertion:
-      return SharedDebugStringConvertibleList {
-        std::make_shared<DebugStringConvertibleItem>("parentNode", parentNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("childNode", newChildNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("index", folly::to<std::string>(index_))
-      };
-    case Removal:
-      return SharedDebugStringConvertibleList {
-        std::make_shared<DebugStringConvertibleItem>("parentNode", parentNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("childNode", oldChildNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("index", folly::to<std::string>(index_))
-      };
-    case Replacement:
-      return SharedDebugStringConvertibleList {
-        std::make_shared<DebugStringConvertibleItem>("parentNode", parentNode_ ? parentNode_->getDebugDescription(options) : "nullptr"),
-        std::make_shared<DebugStringConvertibleItem>("oldChildNode", oldChildNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("newChildNode", newChildNode_->getDebugDescription(options)),
-        std::make_shared<DebugStringConvertibleItem>("index", folly::to<std::string>(index_))
-      };
-  }
-}
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/TreeMutationInstruction.h b/ReactCommon/fabric/uimanager/TreeMutationInstruction.h
deleted file mode 100644
index c27e6f71f35332..00000000000000
--- a/ReactCommon/fabric/uimanager/TreeMutationInstruction.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <vector>
-
-#include <fabric/core/ShadowNode.h>
-#include <fabric/debug/DebugStringConvertible.h>
-
-namespace facebook {
-namespace react {
-
-class TreeMutationInstruction;
-
-using TreeMutationInstructionList = std::vector<TreeMutationInstruction>;
-
-/*
- * Describes single native views tree mutation instruction which may contain
- * pointers to an old shadow node, a new shadow node, a parent shadow node and
- * final index of inserted or updated node.
- * The relationship between native view instances and shadow node instances is
- * defined by `tag` value.
- * Use static methods to instantiate mutation instructions of different types.
- */
-class TreeMutationInstruction:
-  public DebugStringConvertible {
-public:
-
-#pragma mark - Designated Initializers
-
-  /*
-   * Creates and returns an *Creation* instruction.
-   */
-  static const TreeMutationInstruction Create(
-    SharedShadowNode node
-  );
-
-  /*
-   * Creates and returns an *Deletion* instruction.
-   */
-  static const TreeMutationInstruction Delete(
-    SharedShadowNode node
-  );
-
-  /*
-   * Creates and returns an *Insertion* instruction.
-   */
-  static const TreeMutationInstruction Insert(
-    SharedShadowNode parentNode,
-    SharedShadowNode childNode,
-    int index
-  );
-
-  /*
-   * Creates and returns a *Removal* instruction.
-   */
-  static const TreeMutationInstruction Remove(
-    SharedShadowNode parentNode,
-    SharedShadowNode childNode,
-    int index
-  );
-  
-  /*
-   * Creates and returns an *Replacement* instruction.
-   */
-  static const TreeMutationInstruction Replace(
-    SharedShadowNode parentNode,
-    SharedShadowNode oldChildNode,
-    SharedShadowNode newChildNode,
-    int index
-  );
-
-#pragma mark - Type
-
-  enum Type {
-    Creation,
-    Deletion,
-    Insertion,
-    Removal,
-    Replacement
-  };
-
-#pragma mark - Getters
-
-  Type getType() const;
-  SharedShadowNode getParentNode() const;
-  SharedShadowNode getOldChildNode() const;
-  SharedShadowNode getNewChildNode() const;
-  int getIndex() const;
-
-#pragma mark - DebugStringConvertible
-
-  std::string getDebugName() const override;
-  std::string getDebugValue() const override;
-  SharedDebugStringConvertibleList getDebugProps() const override;
-
-private:
-  TreeMutationInstruction(
-    Type type,
-    SharedShadowNode parentNode,
-    SharedShadowNode oldChildNode,
-    SharedShadowNode newChildNode,
-    int index
-  );
-
-  Type type_ {Creation};
-  SharedShadowNode parentNode_ {nullptr};
-  SharedShadowNode oldChildNode_ {nullptr};
-  SharedShadowNode newChildNode_ {nullptr};
-  int index_ {-1};
-};
-
-} // namespace react
-} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UIManager.cpp b/ReactCommon/fabric/uimanager/UIManager.cpp
new file mode 100644
index 00000000000000..ff29c5f7e1f3fa
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UIManager.cpp
@@ -0,0 +1,111 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#include "UIManager.h"
+
+#include <react/core/ShadowNodeFragment.h>
+#include <react/debug/SystraceSection.h>
+
+namespace facebook {
+namespace react {
+
+SharedShadowNode UIManager::createNode(
+    Tag tag,
+    const ComponentName &name,
+    SurfaceId surfaceId,
+    const RawProps &rawProps,
+    SharedEventTarget eventTarget) const {
+  auto &componentDescriptor = componentDescriptorRegistry_->at(name);
+
+  auto shadowNode = componentDescriptor.createShadowNode(
+      {.tag = tag,
+       .rootTag = surfaceId,
+       .eventEmitter =
+           componentDescriptor.createEventEmitter(std::move(eventTarget), tag),
+       .props = componentDescriptor.cloneProps(nullptr, rawProps)});
+
+  if (delegate_) {
+    delegate_->uiManagerDidCreateShadowNode(shadowNode);
+  }
+
+  return std::const_pointer_cast<ShadowNode>(shadowNode);
+}
+
+SharedShadowNode UIManager::cloneNode(
+    const SharedShadowNode &shadowNode,
+    const SharedShadowNodeSharedList &children,
+    const folly::Optional<RawProps> &rawProps) const {
+  auto &componentDescriptor =
+      componentDescriptorRegistry_->at(shadowNode->getComponentHandle());
+
+  auto clonedShadowNode = componentDescriptor.cloneShadowNode(
+      *shadowNode,
+      {
+          .props = rawProps.has_value()
+              ? componentDescriptor.cloneProps(
+                    shadowNode->getProps(), rawProps.value())
+              : ShadowNodeFragment::nullSharedProps(),
+          .children = children,
+      });
+
+  return std::const_pointer_cast<ShadowNode>(clonedShadowNode);
+}
+
+void UIManager::appendChild(
+    const SharedShadowNode &parentShadowNode,
+    const SharedShadowNode &childShadowNode) const {
+  auto &componentDescriptor =
+      componentDescriptorRegistry_->at(parentShadowNode->getComponentHandle());
+  componentDescriptor.appendChild(parentShadowNode, childShadowNode);
+}
+
+void UIManager::completeSurface(
+    SurfaceId surfaceId,
+    const SharedShadowNodeUnsharedList &rootChildren) const {
+  SystraceSection s("FabricUIManager::completeSurface");
+  if (delegate_) {
+    delegate_->uiManagerDidFinishTransaction(surfaceId, rootChildren);
+  }
+}
+
+LayoutMetrics UIManager::getRelativeLayoutMetrics(
+    const ShadowNode &shadowNode,
+    const ShadowNode *ancestorShadowNode) const {
+  if (!ancestorShadowNode) {
+    shadowTreeRegistry_->get(
+        shadowNode.getRootTag(), [&](const ShadowTree &shadowTree) {
+          ancestorShadowNode = shadowTree.getRootShadowNode().get();
+        });
+  }
+
+  auto layoutableShadowNode =
+      dynamic_cast<const LayoutableShadowNode *>(&shadowNode);
+  auto layoutableAncestorShadowNode =
+      dynamic_cast<const LayoutableShadowNode *>(ancestorShadowNode);
+
+  if (!layoutableShadowNode || !layoutableAncestorShadowNode) {
+    return EmptyLayoutMetrics;
+  }
+
+  return layoutableShadowNode->getRelativeLayoutMetrics(
+      *layoutableAncestorShadowNode);
+}
+
+void UIManager::setShadowTreeRegistry(ShadowTreeRegistry *shadowTreeRegistry) {
+  shadowTreeRegistry_ = shadowTreeRegistry;
+}
+
+void UIManager::setComponentDescriptorRegistry(
+    const SharedComponentDescriptorRegistry &componentDescriptorRegistry) {
+  componentDescriptorRegistry_ = componentDescriptorRegistry;
+}
+
+void UIManager::setDelegate(UIManagerDelegate *delegate) {
+  delegate_ = delegate;
+}
+
+UIManagerDelegate *UIManager::getDelegate() {
+  return delegate_;
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UIManager.h b/ReactCommon/fabric/uimanager/UIManager.h
new file mode 100644
index 00000000000000..33742a6d7e43c5
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UIManager.h
@@ -0,0 +1,70 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#pragma once
+
+#include <folly/Optional.h>
+#include <folly/dynamic.h>
+#include <jsi/jsi.h>
+
+#include <react/core/ShadowNode.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+#include <react/uimanager/ShadowTreeRegistry.h>
+#include <react/uimanager/UIManagerDelegate.h>
+
+namespace facebook {
+namespace react {
+
+class UIManager {
+ public:
+  void setShadowTreeRegistry(ShadowTreeRegistry *shadowTreeRegistry);
+
+  void setComponentDescriptorRegistry(
+      const SharedComponentDescriptorRegistry &componentDescriptorRegistry);
+
+  /*
+   * Sets and gets the UIManager's delegate.
+   * The delegate is stored as a raw pointer, so the owner must null
+   * the pointer before being destroyed.
+   */
+  void setDelegate(UIManagerDelegate *delegate);
+  UIManagerDelegate *getDelegate();
+
+ private:
+  friend class UIManagerBinding;
+
+  SharedShadowNode createNode(
+      Tag tag,
+      const std::string &name,
+      SurfaceId surfaceId,
+      const RawProps &props,
+      SharedEventTarget eventTarget) const;
+
+  SharedShadowNode cloneNode(
+      const SharedShadowNode &shadowNode,
+      const SharedShadowNodeSharedList &children = nullptr,
+      const folly::Optional<RawProps> &rawProps = {}) const;
+
+  void appendChild(
+      const SharedShadowNode &parentShadowNode,
+      const SharedShadowNode &childShadowNode) const;
+
+  void completeSurface(
+      SurfaceId surfaceId,
+      const SharedShadowNodeUnsharedList &rootChildren) const;
+
+  /*
+   * Returns layout metrics of given `shadowNode` relative to
+   * `ancestorShadowNode` (relative to the root node in case if provided
+   * `ancestorShadowNode` is nullptr).
+   */
+  LayoutMetrics getRelativeLayoutMetrics(
+      const ShadowNode &shadowNode,
+      const ShadowNode *ancestorShadowNode) const;
+
+  ShadowTreeRegistry *shadowTreeRegistry_;
+  SharedComponentDescriptorRegistry componentDescriptorRegistry_;
+  UIManagerDelegate *delegate_;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UIManagerBinding.cpp b/ReactCommon/fabric/uimanager/UIManagerBinding.cpp
new file mode 100644
index 00000000000000..6c460e973391e4
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UIManagerBinding.cpp
@@ -0,0 +1,288 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#include "UIManagerBinding.h"
+
+#include <react/debug/SystraceSection.h>
+
+#include <jsi/JSIDynamic.h>
+
+namespace facebook {
+namespace react {
+
+static jsi::Object getModule(
+    jsi::Runtime &runtime,
+    const std::string &moduleName) {
+  auto batchedBridge =
+      runtime.global().getPropertyAsObject(runtime, "__fbBatchedBridge");
+  auto getCallableModule =
+      batchedBridge.getPropertyAsFunction(runtime, "getCallableModule");
+  auto module = getCallableModule
+                    .callWithThis(
+                        runtime,
+                        batchedBridge,
+                        {jsi::String::createFromUtf8(runtime, moduleName)})
+                    .asObject(runtime);
+  return module;
+}
+
+void UIManagerBinding::install(
+    jsi::Runtime &runtime,
+    std::shared_ptr<UIManagerBinding> uiManagerBinding) {
+  auto uiManagerModuleName = "nativeFabricUIManager";
+  auto object = jsi::Object::createFromHostObject(runtime, uiManagerBinding);
+  runtime.global().setProperty(runtime, uiManagerModuleName, std::move(object));
+}
+
+UIManagerBinding::UIManagerBinding(std::unique_ptr<UIManager> uiManager)
+    : uiManager_(std::move(uiManager)) {}
+
+void UIManagerBinding::startSurface(
+    jsi::Runtime &runtime,
+    SurfaceId surfaceId,
+    const std::string &moduleName,
+    const folly::dynamic &initalProps) const {
+  folly::dynamic parameters = folly::dynamic::object();
+  parameters["rootTag"] = surfaceId;
+  parameters["initialProps"] = initalProps;
+
+  auto module = getModule(runtime, "AppRegistry");
+  auto method = module.getPropertyAsFunction(runtime, "runApplication");
+
+  method.callWithThis(
+      runtime,
+      module,
+      {jsi::String::createFromUtf8(runtime, moduleName),
+       jsi::valueFromDynamic(runtime, parameters)});
+}
+
+void UIManagerBinding::stopSurface(jsi::Runtime &runtime, SurfaceId surfaceId)
+    const {
+  auto module = getModule(runtime, "ReactFabric");
+  auto method = module.getPropertyAsFunction(runtime, "unmountComponentAtNode");
+
+  method.callWithThis(runtime, module, {jsi::Value{surfaceId}});
+}
+
+void UIManagerBinding::dispatchEvent(
+    jsi::Runtime &runtime,
+    const EventTarget *eventTarget,
+    const std::string &type,
+    const folly::dynamic &payload) const {
+  auto eventTargetValue = jsi::Value::null();
+
+  if (eventTarget) {
+    SystraceSection s("UIManagerBinding::JSIDispatchFabricEventToTarget");
+    auto &eventTargetWrapper =
+        static_cast<const EventTargetWrapper &>(*eventTarget);
+    eventTargetValue = eventTargetWrapper.instanceHandle.lock(runtime);
+    if (eventTargetValue.isUndefined()) {
+      return;
+    }
+  }
+
+  auto &eventHandlerWrapper =
+      static_cast<const EventHandlerWrapper &>(*eventHandler_);
+  eventHandlerWrapper.callback.call(
+      runtime,
+      {std::move(eventTargetValue),
+       jsi::String::createFromUtf8(runtime, type),
+       jsi::valueFromDynamic(runtime, payload)});
+}
+
+void UIManagerBinding::invalidate() const {
+  uiManager_->setShadowTreeRegistry(nullptr);
+  uiManager_->setDelegate(nullptr);
+}
+
+jsi::Value UIManagerBinding::get(
+    jsi::Runtime &runtime,
+    const jsi::PropNameID &name) {
+  auto methodName = name.utf8(runtime);
+  auto &uiManager = *uiManager_;
+
+  // Semantic: Creates a new node with given pieces.
+  if (methodName == "createNode") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        5,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          return valueFromShadowNode(
+              runtime,
+              uiManager.createNode(
+                  tagFromValue(runtime, arguments[0]),
+                  componentNameFromValue(runtime, arguments[1]),
+                  surfaceIdFromValue(runtime, arguments[2]),
+                  rawPropsFromValue(runtime, arguments[3]),
+                  eventTargetFromValue(runtime, arguments[4])));
+        });
+  }
+
+  // Semantic: Clones the node with *same* props and *same* children.
+  if (methodName == "cloneNode") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        1,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          return valueFromShadowNode(
+              runtime,
+              uiManager.cloneNode(shadowNodeFromValue(runtime, arguments[0])));
+        });
+  }
+
+  // Semantic: Clones the node with *same* props and *empty* children.
+  if (methodName == "cloneNodeWithNewChildren") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        1,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          return valueFromShadowNode(
+              runtime,
+              uiManager.cloneNode(
+                  shadowNodeFromValue(runtime, arguments[0]),
+                  ShadowNode::emptySharedShadowNodeSharedList()));
+        });
+  }
+
+  // Semantic: Clones the node with *given* props and *same* children.
+  if (methodName == "cloneNodeWithNewProps") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        2,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          return valueFromShadowNode(
+              runtime,
+              uiManager.cloneNode(
+                  shadowNodeFromValue(runtime, arguments[0]),
+                  nullptr,
+                  rawPropsFromValue(runtime, arguments[1])));
+        });
+  }
+
+  // Semantic: Clones the node with *given* props and *empty* children.
+  if (methodName == "cloneNodeWithNewChildrenAndProps") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        2,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          return valueFromShadowNode(
+              runtime,
+              uiManager.cloneNode(
+                  shadowNodeFromValue(runtime, arguments[0]),
+                  ShadowNode::emptySharedShadowNodeSharedList(),
+                  rawPropsFromValue(runtime, arguments[1])));
+        });
+  }
+
+  if (methodName == "appendChild") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        2,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          uiManager.appendChild(
+              shadowNodeFromValue(runtime, arguments[0]),
+              shadowNodeFromValue(runtime, arguments[1]));
+          return jsi::Value::undefined();
+        });
+  }
+
+  if (methodName == "createChildSet") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        1,
+        [](jsi::Runtime &runtime,
+           const jsi::Value &thisValue,
+           const jsi::Value *arguments,
+           size_t count) -> jsi::Value {
+          auto shadowNodeList =
+              std::make_shared<SharedShadowNodeList>(SharedShadowNodeList({}));
+          return valueFromShadowNodeList(runtime, shadowNodeList);
+        });
+  }
+
+  if (methodName == "appendChildToSet") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        2,
+        [](jsi::Runtime &runtime,
+           const jsi::Value &thisValue,
+           const jsi::Value *arguments,
+           size_t count) -> jsi::Value {
+          auto shadowNodeList = shadowNodeListFromValue(runtime, arguments[0]);
+          auto shadowNode = shadowNodeFromValue(runtime, arguments[1]);
+          shadowNodeList->push_back(shadowNode);
+          return jsi::Value::undefined();
+        });
+  }
+
+  if (methodName == "completeRoot") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        2,
+        [&uiManager](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          uiManager.completeSurface(
+              surfaceIdFromValue(runtime, arguments[0]),
+              shadowNodeListFromValue(runtime, arguments[1]));
+          return jsi::Value::undefined();
+        });
+  }
+
+  if (methodName == "registerEventHandler") {
+    return jsi::Function::createFromHostFunction(
+        runtime,
+        name,
+        1,
+        [this](
+            jsi::Runtime &runtime,
+            const jsi::Value &thisValue,
+            const jsi::Value *arguments,
+            size_t count) -> jsi::Value {
+          auto eventHandler =
+              arguments[0].getObject(runtime).getFunction(runtime);
+          eventHandler_ =
+              std::make_unique<EventHandlerWrapper>(std::move(eventHandler));
+          return jsi::Value::undefined();
+        });
+  }
+
+  return jsi::Value::undefined();
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UIManagerBinding.h b/ReactCommon/fabric/uimanager/UIManagerBinding.h
new file mode 100644
index 00000000000000..f52d695941f07e
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UIManagerBinding.h
@@ -0,0 +1,74 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#pragma once
+
+#include <folly/dynamic.h>
+#include <jsi/jsi.h>
+#include <react/uimanager/UIManager.h>
+#include <react/uimanager/primitives.h>
+
+namespace facebook {
+namespace react {
+
+/*
+ * Exposes UIManager to JavaScript realm.
+ */
+class UIManagerBinding : public jsi::HostObject {
+ public:
+  /*
+   * Installs UIManagerBinding into JavaSctipt runtime.
+   * Thread synchronization must be enforced externally.
+   */
+  static void install(
+      jsi::Runtime &runtime,
+      std::shared_ptr<UIManagerBinding> uiManagerBinding);
+
+  UIManagerBinding(std::unique_ptr<UIManager> uiManager);
+
+  /*
+   * Stops React Native Surface with given id, moduleName, and props.
+   * Thread synchronization must be enforced externally.
+   */
+  void startSurface(
+      jsi::Runtime &runtime,
+      SurfaceId surfaceId,
+      const std::string &moduleName,
+      const folly::dynamic &initalProps) const;
+
+  /*
+   * Stops React Native Surface with given id.
+   * Thread synchronization must be enforced externally.
+   */
+  void stopSurface(jsi::Runtime &runtime, SurfaceId surfaceId) const;
+
+  /*
+   * Delivers raw event data to JavaScript.
+   * Thread synchronization must be enforced externally.
+   */
+  void dispatchEvent(
+      jsi::Runtime &runtime,
+      const EventTarget *eventTarget,
+      const std::string &type,
+      const folly::dynamic &payload) const;
+
+  /*
+   * Invalidates the binding and underlying UIManager.
+   * Allows to save some resources and prevents UIManager's delegate to be
+   * called.
+   * Calling public methods of this class after calling this method is UB.
+   * Can be called on any thread.
+   */
+  void invalidate() const;
+
+  /*
+   * `jsi::HostObject` specific overloads.
+   */
+  jsi::Value get(jsi::Runtime &runtime, const jsi::PropNameID &name) override;
+
+ private:
+  std::unique_ptr<UIManager> uiManager_;
+  std::unique_ptr<const EventHandler> eventHandler_;
+};
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UIManagerDelegate.h b/ReactCommon/fabric/uimanager/UIManagerDelegate.h
index e94af1f44034b1..cd6b881615b28f 100644
--- a/ReactCommon/fabric/uimanager/UIManagerDelegate.h
+++ b/ReactCommon/fabric/uimanager/UIManagerDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include <fabric/core/ShadowNode.h>
-#include <fabric/core/ReactPrimitives.h>
+#include <react/core/ReactPrimitives.h>
+#include <react/core/ShadowNode.h>
 
 namespace facebook {
 namespace react {
@@ -17,20 +17,24 @@ namespace react {
  * Abstract class for UIManager's delegate.
  */
 class UIManagerDelegate {
-public:
-
+ public:
   /*
    * Called right after the new/updated Shadow Node tree is constructed.
    * The tree is not layed out and not sealed at this time.
    */
-  virtual void uiManagerDidFinishTransaction(Tag rootTag, const SharedShadowNodeUnsharedList &rootChildNodes) = 0;
+  virtual void uiManagerDidFinishTransaction(
+      SurfaceId surfaceId,
+      const SharedShadowNodeUnsharedList &rootChildNodes) = 0;
 
   /*
    * Called each time when UIManager constructs a new Shadow Node. Receiver
    * maight use this to preluminary optimistically allocate a new native view
    * instances.
    */
-  virtual void uiManagerDidCreateShadowNode(const SharedShadowNode &shadowNode) = 0;
+  virtual void uiManagerDidCreateShadowNode(
+      const SharedShadowNode &shadowNode) = 0;
+
+  virtual ~UIManagerDelegate() noexcept = default;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/UITemplateProcessor.cpp b/ReactCommon/fabric/uimanager/UITemplateProcessor.cpp
new file mode 100644
index 00000000000000..2e6aad3c8dcc2e
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UITemplateProcessor.cpp
@@ -0,0 +1,148 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "UITemplateProcessor.h"
+
+#include <folly/json.h>
+#include <glog/logging.h>
+#include <react/components/view/ViewComponentDescriptor.h>
+#include <react/components/view/ViewProps.h>
+#include <react/components/view/ViewShadowNode.h>
+#include <react/core/LayoutContext.h>
+#include <react/core/ShadowNodeFragment.h>
+#include <react/core/ComponentDescriptor.h>
+#include <react/debug/DebugStringConvertible.h>
+#include <react/debug/DebugStringConvertibleItem.h>
+
+namespace facebook {
+namespace react {
+
+bool constexpr DEBUG_FLY = false;
+
+struct RBCContext {
+  const Tag rootTag;
+  const std::vector<SharedShadowNode> &nodes;
+  const std::vector<folly::dynamic> &registers;
+  const ComponentDescriptorRegistry &componentDescriptorRegistry;
+  const NativeModuleRegistry &nativeModuleRegistry;
+};
+
+// TODO: use RBCContext instead of all the separate arguments.
+SharedShadowNode UITemplateProcessor::runCommand(
+    const folly::dynamic &command,
+    Tag rootTag,
+    std::vector<SharedShadowNode> &nodes,
+    std::vector<folly::dynamic> &registers,
+    const ComponentDescriptorRegistry &componentDescriptorRegistry,
+    const NativeModuleRegistry &nativeModuleRegistry) {
+  const std::string &opcode = command[0].asString();
+  const int tagOffset = 420000;
+  // TODO: change to integer codes and a switch statement
+  if (opcode == "createNode") {
+    int tag = command[1].asInt();
+    const auto &type = command[2].asString();
+    const auto parentTag = command[3].asInt();
+    const auto &props = command[4];
+    nodes[tag] = componentDescriptorRegistry.createNode(
+        tag + tagOffset, type, rootTag, props, nullptr);
+    if (parentTag > -1) { // parentTag == -1 indicates root node
+      auto parentShadowNode = nodes[parentTag];
+      const SharedComponentDescriptor &componentDescriptor =
+          componentDescriptorRegistry[parentShadowNode];
+      componentDescriptor->appendChild(parentShadowNode, nodes[tag]);
+    }
+  } else if (opcode == "returnRoot") {
+    LOG(INFO)
+        << "(stop) UITemplateProcessor inject serialized 'server rendered' view tree";
+    return nodes[command[1].asInt()];
+  } else if (opcode == "loadNativeBool") {
+    int registerNumber = command[1].asInt();
+    const folly::dynamic &value = nativeModuleRegistry.call(
+        command[2].asString(), command[3].asString(), command[4]);
+    registers[registerNumber] = value.asBool();
+  } else if (opcode == "conditional") {
+    int registerNumber = command[1].asInt();
+    auto conditionDynamic = registers[registerNumber];
+    if (conditionDynamic.isNull()) {
+      // TODO: provide original command or command line?
+      auto err = std::runtime_error(
+          "register " + command[1].asString() + " wasn't loaded before access");
+      throw err;
+    } else if (conditionDynamic.type() != folly::dynamic::BOOL) {
+      // TODO: provide original command or command line?
+      auto err = std::runtime_error(
+          "register " + command[1].asString() + " had type '" +
+          conditionDynamic.typeName() +
+          "' but needs to be 'boolean' for conditionals");
+      throw err;
+    }
+    const auto &nextCommands =
+        conditionDynamic.asBool() ? command[2] : command[3];
+    for (const auto &nextCommand : nextCommands) {
+      runCommand(
+          nextCommand,
+          rootTag,
+          nodes,
+          registers,
+          componentDescriptorRegistry,
+          nativeModuleRegistry);
+    }
+  } else {
+    throw std::runtime_error("Unsupported opcode: " + command[0].asString());
+  }
+  return nullptr;
+}
+
+SharedShadowNode UITemplateProcessor::buildShadowTree(
+    const std::string &jsonStr,
+    Tag rootTag,
+    const folly::dynamic &params,
+    const ComponentDescriptorRegistry &componentDescriptorRegistry,
+    const NativeModuleRegistry &nativeModuleRegistry) {
+  LOG(INFO)
+      << "(strt) UITemplateProcessor inject hardcoded 'server rendered' view tree";
+
+  std::string content = jsonStr;
+  for (const auto &param : params.items()) {
+    const auto &key = param.first.asString();
+    size_t start_pos = content.find(key);
+    if (start_pos != std::string::npos) {
+      content.replace(start_pos, key.length(), param.second.asString());
+    }
+  }
+  auto parsed = folly::parseJson(content);
+  auto commands = parsed["commands"];
+  std::vector<SharedShadowNode> nodes(commands.size() * 2);
+  std::vector<folly::dynamic> registers(32);
+  for (const auto &command : commands) {
+    try {
+      if (DEBUG_FLY) {
+        LOG(INFO) << "try to run command " << folly::toJson(command);
+      }
+      auto ret = runCommand(
+          command,
+          rootTag,
+          nodes,
+          registers,
+          componentDescriptorRegistry,
+          nativeModuleRegistry);
+      if (ret != nullptr) {
+        return ret;
+      }
+    } catch (const std::exception &e) {
+      LOG(ERROR) << "   >>> Exception <<<    running previous command '"
+                 << folly::toJson(command) << "': '" << e.what() << "'";
+    }
+  }
+  LOG(ERROR) << "react ui template missing returnRoot command :(";
+  throw std::runtime_error(
+      "Missing returnRoot command in template content:\n" + content);
+  return SharedShadowNode{};
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/UITemplateProcessor.h b/ReactCommon/fabric/uimanager/UITemplateProcessor.h
new file mode 100644
index 00000000000000..a478eb6f0e5ecf
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/UITemplateProcessor.h
@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <folly/dynamic.h>
+
+#include <react/core/ShadowNode.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+#include <react/uimanager/UIManagerDelegate.h>
+
+namespace facebook {
+namespace react {
+
+// Temporary NativeModuleRegistry definition
+using NativeModuleCallFn =
+    std::function<folly::dynamic(const std::string &, const folly::dynamic &)>;
+
+class NativeModuleRegistry {
+ public:
+  void registerModule(
+      const std::string &moduleName,
+      NativeModuleCallFn callFn) {
+    modules_.emplace(moduleName, callFn);
+  }
+
+  folly::dynamic call(
+      const std::string &moduleName,
+      const std::string &methodName,
+      const folly::dynamic &args) const {
+    return modules_.at(moduleName)(methodName, args);
+  }
+
+ private:
+  std::unordered_map<std::string, NativeModuleCallFn> modules_;
+};
+
+class UITemplateProcessor {
+ public:
+  static SharedShadowNode buildShadowTree(
+      const std::string &jsonStr,
+      int rootTag,
+      const folly::dynamic &params,
+      const ComponentDescriptorRegistry &componentDescriptorRegistry,
+      const NativeModuleRegistry &nativeModuleRegistry);
+
+ private:
+  static SharedShadowNode runCommand(
+      const folly::dynamic &command,
+      Tag rootTag,
+      std::vector<SharedShadowNode> &nodes,
+      std::vector<folly::dynamic> &registers,
+      const ComponentDescriptorRegistry &componentDescriptorRegistry,
+      const NativeModuleRegistry &nativeModuleRegistry);
+};
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/primitives.h b/ReactCommon/fabric/uimanager/primitives.h
new file mode 100644
index 00000000000000..8400116a2baf0e
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/primitives.h
@@ -0,0 +1,122 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+#pragma once
+
+#include <folly/dynamic.h>
+#include <jsi/JSIDynamic.h>
+#include <jsi/jsi.h>
+#include <react/core/ShadowNode.h>
+
+namespace facebook {
+namespace react {
+
+using RuntimeExecutor = std::function<void(
+    std::function<void(facebook::jsi::Runtime &runtime)> &&callback)>;
+
+inline RawProps rawPropsFromDynamic(const folly::dynamic object) noexcept {
+  RawProps result;
+
+  if (object.isNull()) {
+    return result;
+  }
+
+  assert(object.isObject());
+
+  for (const auto &pair : object.items()) {
+    assert(pair.first.isString());
+    result[pair.first.asString()] = pair.second;
+  }
+
+  return result;
+}
+
+struct EventTargetWrapper : public EventTarget {
+  EventTargetWrapper(jsi::WeakObject instanceHandle)
+      : instanceHandle(std::move(instanceHandle)) {}
+
+  mutable jsi::WeakObject instanceHandle;
+};
+
+struct EventHandlerWrapper : public EventHandler {
+  EventHandlerWrapper(jsi::Function eventHandler)
+      : callback(std::move(eventHandler)) {}
+
+  jsi::Function callback;
+};
+
+struct ShadowNodeWrapper : public jsi::HostObject {
+  ShadowNodeWrapper(SharedShadowNode shadowNode)
+      : shadowNode(std::move(shadowNode)) {}
+
+  SharedShadowNode shadowNode;
+};
+
+struct ShadowNodeListWrapper : public jsi::HostObject {
+  ShadowNodeListWrapper(SharedShadowNodeUnsharedList shadowNodeList)
+      : shadowNodeList(shadowNodeList) {}
+
+  SharedShadowNodeUnsharedList shadowNodeList;
+};
+
+inline static SharedShadowNode shadowNodeFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return value.getObject(runtime)
+      .getHostObject<ShadowNodeWrapper>(runtime)
+      ->shadowNode;
+}
+
+inline static jsi::Value valueFromShadowNode(
+    jsi::Runtime &runtime,
+    const SharedShadowNode &shadowNode) {
+  return jsi::Object::createFromHostObject(
+      runtime, std::make_shared<ShadowNodeWrapper>(shadowNode));
+}
+
+inline static SharedShadowNodeUnsharedList shadowNodeListFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return value.getObject(runtime)
+      .getHostObject<ShadowNodeListWrapper>(runtime)
+      ->shadowNodeList;
+}
+
+inline static jsi::Value valueFromShadowNodeList(
+    jsi::Runtime &runtime,
+    const SharedShadowNodeUnsharedList &shadowNodeList) {
+  return jsi::Object::createFromHostObject(
+      runtime, std::make_unique<ShadowNodeListWrapper>(shadowNodeList));
+}
+
+inline static RawProps rawPropsFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return rawPropsFromDynamic(folly::dynamic{
+      value.isNull() ? nullptr : jsi::dynamicFromValue(runtime, value)});
+}
+
+inline static SharedEventTarget eventTargetFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return std::make_shared<EventTargetWrapper>(
+      jsi::WeakObject(runtime, value.getObject(runtime)));
+}
+
+inline static Tag tagFromValue(jsi::Runtime &runtime, const jsi::Value &value) {
+  return (Tag)value.getNumber();
+}
+
+inline static SurfaceId surfaceIdFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return (SurfaceId)value.getNumber();
+}
+
+inline static ComponentName componentNameFromValue(
+    jsi::Runtime &runtime,
+    const jsi::Value &value) {
+  return value.getString(runtime).utf8(runtime);
+}
+
+} // namespace react
+} // namespace facebook
diff --git a/ReactCommon/fabric/uimanager/tests/FabricUIManagerTest.cpp b/ReactCommon/fabric/uimanager/tests/FabricUIManagerTest.cpp
index d22ed7f946314e..59dbbab049c125 100644
--- a/ReactCommon/fabric/uimanager/tests/FabricUIManagerTest.cpp
+++ b/ReactCommon/fabric/uimanager/tests/FabricUIManagerTest.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,11 +7,11 @@
 
 #include <memory>
 
-#include <fabric/uimanager/FabricUIManager.h>
 #include <gtest/gtest.h>
+#include <react/uimanager/UIManager.h>
 
 using namespace facebook::react;
 
-TEST(FabricUIManagerTest, testSomething) {
+TEST(UIManagerTest, testSomething) {
   // TODO
 }
diff --git a/ReactCommon/fabric/uimanager/tests/UITemplateProcessorTest.cpp b/ReactCommon/fabric/uimanager/tests/UITemplateProcessorTest.cpp
new file mode 100644
index 00000000000000..d1a52576d61d0c
--- /dev/null
+++ b/ReactCommon/fabric/uimanager/tests/UITemplateProcessorTest.cpp
@@ -0,0 +1,144 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <exception>
+
+#include <gtest/gtest.h>
+#include <react/uimanager/ComponentDescriptorFactory.h>
+#include <react/uimanager/UITemplateProcessor.h>
+
+using namespace facebook::react;
+
+#include <react/components/activityindicator/ActivityIndicatorViewComponentDescriptor.h>
+#include <react/components/image/ImageComponentDescriptor.h>
+#include <react/components/scrollview/ScrollViewComponentDescriptor.h>
+#include <react/components/text/ParagraphComponentDescriptor.h>
+#include <react/components/text/RawTextComponentDescriptor.h>
+#include <react/components/text/TextComponentDescriptor.h>
+#include <react/components/view/ViewComponentDescriptor.h>
+#include <react/uimanager/ComponentDescriptorRegistry.h>
+
+namespace facebook {
+namespace react {
+
+SharedComponentDescriptorRegistry ComponentDescriptorFactory::buildRegistry(
+    const SharedEventDispatcher &eventDispatcher,
+    const SharedContextContainer &contextContainer) {
+  auto registry = std::make_shared<ComponentDescriptorRegistry>();
+  registry->registerComponentDescriptor(
+      std::make_shared<ViewComponentDescriptor>(eventDispatcher));
+  registry->registerComponentDescriptor(
+      std::make_shared<ImageComponentDescriptor>(
+          eventDispatcher, contextContainer));
+  registry->registerComponentDescriptor(
+      std::make_shared<ScrollViewComponentDescriptor>(eventDispatcher));
+  registry->registerComponentDescriptor(
+      std::make_shared<ParagraphComponentDescriptor>(
+          eventDispatcher, contextContainer));
+  registry->registerComponentDescriptor(
+      std::make_shared<TextComponentDescriptor>(eventDispatcher));
+  registry->registerComponentDescriptor(
+      std::make_shared<RawTextComponentDescriptor>(eventDispatcher));
+  registry->registerComponentDescriptor(
+      std::make_shared<ActivityIndicatorViewComponentDescriptor>(
+          eventDispatcher));
+  return registry;
+}
+
+bool mockSimpleTestValue_;
+
+NativeModuleRegistry buildNativeModuleRegistry();
+
+NativeModuleRegistry buildNativeModuleRegistry() {
+  NativeModuleRegistry nMR;
+  nMR.registerModule(
+      "MobileConfig",
+      [&](const std::string &methodName, const folly::dynamic &args) {
+        return mockSimpleTestValue_;
+      });
+  return nMR;
+}
+
+} // namespace react
+} // namespace facebook
+
+TEST(UITemplateProcessorTest, testSimpleBytecode) {
+  auto surfaceId = 11;
+  auto componentDescriptorRegistry =
+      ComponentDescriptorFactory::buildRegistry(nullptr, nullptr);
+  auto nativeModuleRegistry = buildNativeModuleRegistry();
+
+  auto bytecode = R"delim({"version":0.1,"commands":[
+    ["createNode",2,"RCTView",-1,{"opacity": 0.5, "testId": "root"}],
+    ["createNode",4,"RCTView",2,{"testId": "child"}],
+    ["returnRoot",2]
+  ]})delim";
+
+  mockSimpleTestValue_ = true;
+
+  auto root1 = UITemplateProcessor::buildShadowTree(
+      bytecode,
+      surfaceId,
+      folly::dynamic::object(),
+      *componentDescriptorRegistry,
+      nativeModuleRegistry);
+  LOG(INFO) << std::endl << root1->getDebugDescription();
+  auto props1 = std::dynamic_pointer_cast<const ViewProps>(root1->getProps());
+  ASSERT_NEAR(props1->opacity, 0.5, 0.001);
+  ASSERT_STREQ(props1->testId.c_str(), "root");
+  auto children1 = root1->getChildren();
+  ASSERT_EQ(children1.size(), 1);
+  auto child_props1 =
+      std::dynamic_pointer_cast<const ViewProps>(children1.at(0)->getProps());
+  ASSERT_STREQ(child_props1->testId.c_str(), "child");
+}
+
+TEST(UITemplateProcessorTest, testConditionalBytecode) {
+  auto surfaceId = 11;
+  auto componentDescriptorRegistry =
+      ComponentDescriptorFactory::buildRegistry(nullptr, nullptr);
+  auto nativeModuleRegistry = buildNativeModuleRegistry();
+
+  auto bytecode = R"delim({"version":0.1,"commands":[
+    ["createNode",2,"RCTView",-1,{"testId": "root"}],
+    ["loadNativeBool",1,"MobileConfig","getBool",["qe:simple_test"]],
+    ["conditional",1,
+      [["createNode",4,"RCTView",2,{"testId": "cond_true"}]],
+      [["createNode",4,"RCTView",2,{"testId": "cond_false"}]]
+    ],
+    ["returnRoot",2]
+  ]})delim";
+
+  mockSimpleTestValue_ = true;
+
+  auto root1 = UITemplateProcessor::buildShadowTree(
+      bytecode,
+      surfaceId,
+      folly::dynamic::object(),
+      *componentDescriptorRegistry,
+      nativeModuleRegistry);
+  LOG(INFO) << std::endl << root1->getDebugDescription();
+  auto props1 = std::dynamic_pointer_cast<const ViewProps>(root1->getProps());
+  ASSERT_STREQ(props1->testId.c_str(), "root");
+  auto children1 = root1->getChildren();
+  ASSERT_EQ(children1.size(), 1);
+  auto child_props1 =
+      std::dynamic_pointer_cast<const ViewProps>(children1.at(0)->getProps());
+  ASSERT_STREQ(child_props1->testId.c_str(), "cond_true");
+
+  mockSimpleTestValue_ = false;
+
+  auto root2 = UITemplateProcessor::buildShadowTree(
+      bytecode,
+      surfaceId,
+      folly::dynamic::object(),
+      *componentDescriptorRegistry,
+      nativeModuleRegistry);
+  auto child_props2 = std::dynamic_pointer_cast<const ViewProps>(
+      root2->getChildren().at(0)->getProps());
+  ASSERT_STREQ(child_props2->testId.c_str(), "cond_false");
+}
diff --git a/ReactCommon/jschelpers/BUCK b/ReactCommon/jschelpers/BUCK
deleted file mode 100644
index 7739b8f7dc5454..00000000000000
--- a/ReactCommon/jschelpers/BUCK
+++ /dev/null
@@ -1,73 +0,0 @@
-load("//ReactNative:DEFS.bzl", "ANDROID", "ANDROID_JSC_INTERNAL_DEPS", "APPLE", "APPLE_JSC_INTERNAL_DEPS", "react_native_xplat_target", "rn_xplat_cxx_library")
-
-EXPORTED_HEADERS = [
-    "JavaScriptCore.h",
-    "JSCHelpers.h",
-    "JSCWrapper.h",
-    "noncopyable.h",
-    "Unicode.h",
-    "Value.h",
-]
-
-rn_xplat_cxx_library(
-    name = "jscinternalhelpers",
-    srcs = glob(
-        ["*.cpp"],
-        exclude = ["systemJSCWrapper.cpp"],
-    ),
-    headers = glob(
-        ["*.h"],
-        exclude = EXPORTED_HEADERS,
-    ),
-    header_namespace = "",
-    exported_headers = dict([
-        (
-            "jschelpers/%s" % header,
-            header,
-        )
-        for header in EXPORTED_HEADERS
-    ]),
-    compiler_flags = [
-        "-Wall",
-        "-fexceptions",
-        "-frtti",
-        "-fvisibility=hidden",
-        "-std=c++1y",
-    ],
-    fbandroid_deps = ANDROID_JSC_INTERNAL_DEPS,
-    fbobjc_deps = APPLE_JSC_INTERNAL_DEPS,
-    force_static = True,
-    platforms = (ANDROID, APPLE),
-    visibility = [
-        "PUBLIC",
-    ],
-    deps = [
-        "xplat//folly:molly",
-        "xplat//third-party/glog:glog",
-        react_native_xplat_target("privatedata:privatedata"),
-    ],
-    exported_deps = [
-        react_native_xplat_target("privatedata:privatedata"),
-    ],
-)
-
-rn_xplat_cxx_library(
-    name = "jschelpers",
-    srcs = [],
-    compiler_flags = [
-        "-Wall",
-        "-fexceptions",
-        "-fvisibility=hidden",
-        "-std=c++1y",
-    ],
-    fbobjc_frameworks = [
-        "$SDKROOT/System/Library/Frameworks/JavaScriptCore.framework",
-    ],
-    fbobjc_srcs = ["systemJSCWrapper.cpp"],
-    force_static = True,
-    platforms = (ANDROID, APPLE),
-    visibility = [
-        "PUBLIC",
-    ],
-    deps = [":jscinternalhelpers"],
-)
diff --git a/ReactCommon/jschelpers/JSCWrapper.cpp b/ReactCommon/jschelpers/JSCWrapper.cpp
deleted file mode 100644
index bc432eb05f624a..00000000000000
--- a/ReactCommon/jschelpers/JSCWrapper.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * Copyright (c) 2016-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include "JSCWrapper.h"
-
-#if defined(__APPLE__)
-
-// TODO: use glog in OSS too
-#if __has_include(<glog/logging.h>)
-#define USE_GLOG 1
-#include <glog/logging.h>
-#else
-#define USE_GLOG 0
-#endif
-
-namespace facebook {
-namespace react {
-
-static const JSCWrapper* s_customWrapper = nullptr;
-
-bool isCustomJSCWrapperSet() {
-  return s_customWrapper != nullptr;
-}
-
-const JSCWrapper* customJSCWrapper() {
-  #if USE_GLOG
-  CHECK(s_customWrapper != nullptr) << "Accessing custom JSC wrapper before it's set";
-  #endif
-  return s_customWrapper;
-}
-
-void setCustomJSCWrapper(const JSCWrapper* wrapper) {
-  #if USE_GLOG
-  CHECK(s_customWrapper == nullptr) << "Can't set custom JSC wrapper multiple times";
-  #endif
-  s_customWrapper = wrapper;
-}
-
-} }
-
-#endif
diff --git a/ReactCommon/jschelpers/noncopyable.h b/ReactCommon/jschelpers/noncopyable.h
deleted file mode 100644
index d8a1cca4b06217..00000000000000
--- a/ReactCommon/jschelpers/noncopyable.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2004-present, Facebook, Inc.
-
-// This source code is licensed under the MIT license found in the
-// LICENSE file in the root directory of this source tree.
-
-#pragma once
-namespace facebook {
-namespace react {
-struct noncopyable {
-  noncopyable(const noncopyable&) = delete;
-  noncopyable& operator=(const noncopyable&) = delete;
- protected:
-  noncopyable() = default;
-};
-}}
diff --git a/ReactCommon/jschelpers/systemJSCWrapper.cpp b/ReactCommon/jschelpers/systemJSCWrapper.cpp
deleted file mode 100644
index eecb036f547c0f..00000000000000
--- a/ReactCommon/jschelpers/systemJSCWrapper.cpp
+++ /dev/null
@@ -1,154 +0,0 @@
-/**
- * Copyright (c) 2016-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <jschelpers/JSCWrapper.h>
-
-#if defined(__APPLE__)
-
-#include <mutex>
-
-#include <objc/runtime.h>
-
-// Crash the app (with a descriptive stack trace) if a function that is not supported by
-// the system JSC is called.
-#define UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(FUNC_NAME)            \
-static void Unimplemented_##FUNC_NAME(__unused void* args...) { \
-  assert(false);                                                \
-}
-
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSEvaluateBytecodeBundle)
-#if WITH_FBJSCEXTENSIONS
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSStringCreateWithUTF8CStringExpectAscii)
-#endif
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSPokeSamplingProfiler)
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSStartSamplingProfilingOnMainJSCThread)
-
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSGlobalContextEnableDebugger)
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(JSGlobalContextDisableDebugger)
-
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(configureJSCForIOS)
-
-UNIMPLEMENTED_SYSTEM_JSC_FUNCTION(FBJSContextStartGCTimers)
-
-bool JSSamplingProfilerEnabled() {
-  return false;
-}
-
-const int32_t JSNoBytecodeFileFormatVersion = -1;
-
-namespace facebook {
-namespace react {
-
-static JSCWrapper s_systemWrapper = {};
-
-const JSCWrapper* systemJSCWrapper() {
-  // Note that this is not used on Android. All methods are statically linked instead.
-  // Some fields are lazily initialized
-  static std::once_flag flag;
-  std::call_once(flag, []() {
-    s_systemWrapper = {
-      .JSGlobalContextCreateInGroup = JSGlobalContextCreateInGroup,
-      .JSGlobalContextRelease = JSGlobalContextRelease,
-      .JSGlobalContextSetName = JSGlobalContextSetName,
-
-      .JSContextGetGlobalContext = JSContextGetGlobalContext,
-      .JSContextGetGlobalObject = JSContextGetGlobalObject,
-      .FBJSContextStartGCTimers =
-        (decltype(&FBJSContextStartGCTimers))
-        Unimplemented_FBJSContextStartGCTimers,
-
-      .JSEvaluateScript = JSEvaluateScript,
-      .JSEvaluateBytecodeBundle =
-        (decltype(&JSEvaluateBytecodeBundle))
-        Unimplemented_JSEvaluateBytecodeBundle,
-
-      .JSStringCreateWithUTF8CString = JSStringCreateWithUTF8CString,
-      .JSStringCreateWithCFString = JSStringCreateWithCFString,
-      #if WITH_FBJSCEXTENSIONS
-      .JSStringCreateWithUTF8CStringExpectAscii =
-        (decltype(&JSStringCreateWithUTF8CStringExpectAscii))
-        Unimplemented_JSStringCreateWithUTF8CStringExpectAscii,
-      #endif
-      .JSStringCopyCFString = JSStringCopyCFString,
-      .JSStringGetCharactersPtr = JSStringGetCharactersPtr,
-      .JSStringGetLength = JSStringGetLength,
-      .JSStringGetMaximumUTF8CStringSize = JSStringGetMaximumUTF8CStringSize,
-      .JSStringIsEqualToUTF8CString = JSStringIsEqualToUTF8CString,
-      .JSStringRelease = JSStringRelease,
-      .JSStringRetain = JSStringRetain,
-
-      .JSClassCreate = JSClassCreate,
-      .JSClassRetain = JSClassRetain,
-      .JSClassRelease = JSClassRelease,
-
-      .JSObjectCallAsConstructor = JSObjectCallAsConstructor,
-      .JSObjectCallAsFunction = JSObjectCallAsFunction,
-      .JSObjectGetPrivate = JSObjectGetPrivate,
-      .JSObjectGetProperty = JSObjectGetProperty,
-      .JSObjectGetPropertyAtIndex = JSObjectGetPropertyAtIndex,
-      .JSObjectIsConstructor = JSObjectIsConstructor,
-      .JSObjectIsFunction = JSObjectIsFunction,
-      .JSObjectMake = JSObjectMake,
-      .JSObjectMakeArray = JSObjectMakeArray,
-      .JSObjectMakeDate = JSObjectMakeDate,
-      .JSObjectMakeError = JSObjectMakeError,
-      .JSObjectMakeFunctionWithCallback = JSObjectMakeFunctionWithCallback,
-      .JSObjectSetPrivate = JSObjectSetPrivate,
-      .JSObjectSetProperty = JSObjectSetProperty,
-      .JSObjectSetPropertyAtIndex = JSObjectSetPropertyAtIndex,
-
-      .JSObjectCopyPropertyNames = JSObjectCopyPropertyNames,
-      .JSPropertyNameArrayGetCount = JSPropertyNameArrayGetCount,
-      .JSPropertyNameArrayGetNameAtIndex = JSPropertyNameArrayGetNameAtIndex,
-      .JSPropertyNameArrayRelease = JSPropertyNameArrayRelease,
-
-      .JSValueCreateJSONString = JSValueCreateJSONString,
-      .JSValueGetType = JSValueGetType,
-      .JSValueMakeFromJSONString = JSValueMakeFromJSONString,
-      .JSValueMakeBoolean = JSValueMakeBoolean,
-      .JSValueMakeNull = JSValueMakeNull,
-      .JSValueMakeNumber = JSValueMakeNumber,
-      .JSValueMakeString = JSValueMakeString,
-      .JSValueMakeUndefined = JSValueMakeUndefined,
-      .JSValueProtect = JSValueProtect,
-      .JSValueToBoolean = JSValueToBoolean,
-      .JSValueToNumber = JSValueToNumber,
-      .JSValueToObject = JSValueToObject,
-      .JSValueToStringCopy = JSValueToStringCopy,
-      .JSValueUnprotect = JSValueUnprotect,
-      .JSValueIsNull = JSValueIsNull,
-
-      .JSSamplingProfilerEnabled = JSSamplingProfilerEnabled,
-      .JSPokeSamplingProfiler =
-        (decltype(&JSPokeSamplingProfiler))
-        Unimplemented_JSPokeSamplingProfiler,
-      .JSStartSamplingProfilingOnMainJSCThread =
-        (decltype(&JSStartSamplingProfilingOnMainJSCThread))
-        Unimplemented_JSStartSamplingProfilingOnMainJSCThread,
-
-      .JSGlobalContextEnableDebugger =
-        (decltype(&JSGlobalContextEnableDebugger))
-        Unimplemented_JSGlobalContextEnableDebugger,
-      .JSGlobalContextDisableDebugger =
-        (decltype(&JSGlobalContextDisableDebugger))
-        Unimplemented_JSGlobalContextDisableDebugger,
-
-      .configureJSCForIOS =
-        (decltype(&configureJSCForIOS))Unimplemented_configureJSCForIOS,
-
-      .JSContext = objc_getClass("JSContext"),
-      .JSValue = objc_getClass("JSValue"),
-
-      .JSBytecodeFileFormatVersion = JSNoBytecodeFileFormatVersion,
-    };
-  });
-  return &s_systemWrapper;
-}
-
-} }
-
-#endif
diff --git a/ReactCommon/jsi/jsi.h b/ReactCommon/jsi/jsi.h
index 8b41ff23689d54..b55b84df0a2773 100644
--- a/ReactCommon/jsi/jsi.h
+++ b/ReactCommon/jsi/jsi.h
@@ -14,8 +14,12 @@
 #include <vector>
 
 #ifndef JSI_EXPORT
+#ifdef _MSC_VER
+#define JSI_EXPORT
+#else
 #define JSI_EXPORT __attribute__((visibility("default")))
 #endif
+#endif
 
 class FBJSRuntime;
 namespace facebook {
diff --git a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp
index b862d8fb08778f..5d47e2894e584b 100644
--- a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp
+++ b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp
@@ -3,7 +3,7 @@
 // This source code is licensed under the MIT license found in the
  // LICENSE file in the root directory of this source tree.
 
-#include "jsireact/JSIExecutor.h"
+#include "JSIExecutor.h"
 
 #include <cxxreact/JSBigString.h>
 #include <cxxreact/ModuleRegistry.h>
@@ -14,6 +14,7 @@
 #include <glog/logging.h>
 #include <jsi/JSIDynamic.h>
 
+#include <sstream>
 #include <stdexcept>
 
 using namespace facebook::jsi;
@@ -88,10 +89,10 @@ JSIExecutor::JSIExecutor(
 }
 
 void JSIExecutor::loadApplicationScript(
-    std::unique_ptr<const JSBigString> script,
-    uint64_t scriptVersion,
-    std::string sourceURL,
-    std::string&& bytecodeFileName) {
+      std::unique_ptr<const JSBigString> script,
+      uint64_t /*scriptVersion*/, // TODO(OSS Candidate ISS#2710739)
+      std::string sourceURL,
+      std::string&& /*bytecodeFileName*/) { // TODO(OSS Candidate ISS#2710739)
   SystraceSection s("JSIExecutor::loadApplicationScript");
 
   // TODO: check for and use precompiled HBC
diff --git a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
index bb31c10704212c..c53cf438b60f3a 100644
--- a/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
+++ b/ReactCommon/jsiexecutor/jsireact/JSIExecutor.h
@@ -79,11 +79,10 @@ class JSIExecutor : public JSExecutor {
       Logger logger,
       const JSIScopedTimeoutInvoker& timeoutInvoker,
       RuntimeInstaller runtimeInstaller);
-  void loadApplicationScript(
-      std::unique_ptr<const JSBigString> script,
-      uint64_t scriptVersion,
-      std::string sourceURL,
-      std::string&& bytecodeFileName) override;
+  void loadApplicationScript(std::unique_ptr<const JSBigString> script,
+                             uint64_t scriptVersion, // TODO(OSS Candidate ISS#2710739)
+                             std::string sourceURL,
+                             std::string&& bytecodeFileName) override; // TODO(OSS Candidate ISS#2710739)
   void setBundleRegistry(std::unique_ptr<RAMBundleRegistry>) override;
   void registerBundle(uint32_t bundleId, const std::string& bundlePath)
       override;
diff --git a/ReactCommon/jsiexecutor/jsireact/JSINativeModules.cpp b/ReactCommon/jsiexecutor/jsireact/JSINativeModules.cpp
index a335764b4990c9..a15ceb05ca35e4 100644
--- a/ReactCommon/jsiexecutor/jsireact/JSINativeModules.cpp
+++ b/ReactCommon/jsiexecutor/jsireact/JSINativeModules.cpp
@@ -3,7 +3,7 @@
 // This source code is licensed under the MIT license found in the
  // LICENSE file in the root directory of this source tree.
 
-#include "jsiexecutor/jsireact/JSINativeModules.h"
+#include "jsireact/JSINativeModules.h"
 
 #include <cxxreact/ReactMarker.h>
 
diff --git a/ReactCommon/jsinspector/Android.mk b/ReactCommon/jsinspector/Android.mk
index d5fe4ef12dc08a..4ac55536236532 100644
--- a/ReactCommon/jsinspector/Android.mk
+++ b/ReactCommon/jsinspector/Android.mk
@@ -1,11 +1,15 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
 
 LOCAL_MODULE := jsinspector
 
-LOCAL_SRC_FILES := \
-  InspectorInterfaces.cpp
+LOCAL_SRC_FILES := $(wildcard $(LOCAL_PATH)/*.cpp)
 
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/..
 LOCAL_EXPORT_C_INCLUDES := $(LOCAL_C_INCLUDES)
diff --git a/ReactCommon/jsinspector/BUCK b/ReactCommon/jsinspector/BUCK
index ceb0293f71eb1c..7d9baea11c6171 100644
--- a/ReactCommon/jsinspector/BUCK
+++ b/ReactCommon/jsinspector/BUCK
@@ -1,5 +1,5 @@
-load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
-load("//ReactNative:DEFS.bzl", "rn_xplat_cxx_library")
+load("@fbsource//tools/build_defs:glob_defs.bzl", "subdir_glob")
+load("//tools/build_defs/oss:rn_defs.bzl", "rn_xplat_cxx_library")
 
 EXPORTED_HEADERS = [
     "InspectorInterfaces.h",
diff --git a/ReactCommon/jsinspector/InspectorInterfaces.cpp b/ReactCommon/jsinspector/InspectorInterfaces.cpp
index 326495d031162a..b4f0af30fe1443 100644
--- a/ReactCommon/jsinspector/InspectorInterfaces.cpp
+++ b/ReactCommon/jsinspector/InspectorInterfaces.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/jsinspector/InspectorInterfaces.h b/ReactCommon/jsinspector/InspectorInterfaces.h
index c37c2d574d2ff8..e8b0c94235574f 100644
--- a/ReactCommon/jsinspector/InspectorInterfaces.h
+++ b/ReactCommon/jsinspector/InspectorInterfaces.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/microprofiler/BUCK b/ReactCommon/microprofiler/BUCK
index d35af4ee2cbdba..a67104a8c859d3 100644
--- a/ReactCommon/microprofiler/BUCK
+++ b/ReactCommon/microprofiler/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "GLOG_DEP", "cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "GLOG_DEP", "cxx_library")
 
 cxx_library(
     name = "microprofiler",
diff --git a/ReactCommon/microprofiler/MicroProfiler.cpp b/ReactCommon/microprofiler/MicroProfiler.cpp
index 0f1e860e4a99ae..8bee8cd75eb628 100644
--- a/ReactCommon/microprofiler/MicroProfiler.cpp
+++ b/ReactCommon/microprofiler/MicroProfiler.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/microprofiler/MicroProfiler.h b/ReactCommon/microprofiler/MicroProfiler.h
index 30658da0b7233e..797ab0dfd38b0a 100644
--- a/ReactCommon/microprofiler/MicroProfiler.h
+++ b/ReactCommon/microprofiler/MicroProfiler.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/privatedata/BUCK b/ReactCommon/privatedata/BUCK
deleted file mode 100644
index abd0de4d498eca..00000000000000
--- a/ReactCommon/privatedata/BUCK
+++ /dev/null
@@ -1,24 +0,0 @@
-load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
-load("//ReactNative:DEFS.bzl", "rn_xplat_cxx_library")
-
-rn_xplat_cxx_library(
-    name = "privatedata",
-    srcs = glob(["**/*.cpp"]),
-    header_namespace = "",
-    exported_headers = subdir_glob(
-        [
-            ("", "**/*.h"),
-        ],
-        prefix = "privatedata",
-    ),
-    compiler_flags = [
-        "-Wall",
-        "-fexceptions",
-        "-frtti",
-        "-fvisibility=hidden",
-        "-std=c++1y",
-    ],
-    visibility = [
-        "PUBLIC",
-    ],
-)
diff --git a/ReactCommon/yoga/Android.mk b/ReactCommon/yoga/Android.mk
index 07e664037f359d..f1cd07fc953346 100644
--- a/ReactCommon/yoga/Android.mk
+++ b/ReactCommon/yoga/Android.mk
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
diff --git a/ReactCommon/yoga/BUCK b/ReactCommon/yoga/BUCK
index 3f2e95b02d8d9c..4e97a4201abf60 100644
--- a/ReactCommon/yoga/BUCK
+++ b/ReactCommon/yoga/BUCK
@@ -1,4 +1,4 @@
-load("//ReactNative:DEFS.bzl", "cxx_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "cxx_library")
 
 cxx_library(
     name = "yoga",
diff --git a/ReactCommon/yoga/yoga.podspec b/ReactCommon/yoga/yoga.podspec
index 6d5dc0357d9d9f..455d2e87b8b69b 100644
--- a/ReactCommon/yoga/yoga.podspec
+++ b/ReactCommon/yoga/yoga.podspec
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 package = JSON.parse(File.read(File.expand_path('../../package.json', __dir__)))
 version = package['version']
 
diff --git a/ReactCommon/yoga/yoga/Utils.cpp b/ReactCommon/yoga/yoga/Utils.cpp
index 839952219d2860..5322642f744330 100644
--- a/ReactCommon/yoga/yoga/Utils.cpp
+++ b/ReactCommon/yoga/yoga/Utils.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -52,7 +52,7 @@ bool YGFloatsEqual(const float a, const float b) {
   return yoga::isUndefined(a) && yoga::isUndefined(b);
 }
 
-float YGFloatSanitize(const float& val) {
+float YGFloatSanitize(const float val) {
   return yoga::isUndefined(val) ? 0 : val;
 }
 
diff --git a/ReactCommon/yoga/yoga/Utils.h b/ReactCommon/yoga/yoga/Utils.h
index 6c95b1e7aaf772..db257ae51e7b6d 100644
--- a/ReactCommon/yoga/yoga/Utils.h
+++ b/ReactCommon/yoga/yoga/Utils.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -91,7 +91,7 @@ bool YGFloatArrayEqual(
 }
 
 // This function returns 0 if YGFloatIsUndefined(val) is true and val otherwise
-float YGFloatSanitize(const float& val);
+float YGFloatSanitize(const float val);
 
 // This function unwraps optional and returns YGUndefined if not defined or
 // op.value otherwise
diff --git a/ReactCommon/yoga/yoga/YGConfig.cpp b/ReactCommon/yoga/yoga/YGConfig.cpp
index 5cee527852fc90..e0edd3f7c333d6 100644
--- a/ReactCommon/yoga/yoga/YGConfig.cpp
+++ b/ReactCommon/yoga/yoga/YGConfig.cpp
@@ -1,19 +1,10 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
+/*
+ *  Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ *  This source code is licensed under the MIT license found in the LICENSE
+ *  file in the root directory of this source tree.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
  */
-
 #include "YGConfig.h"
 
-const std::array<bool, YGExperimentalFeatureCount>
-    kYGDefaultExperimentalFeatures = {{false}};
-
-YGConfig::YGConfig(YGLogger logger)
-    : experimentalFeatures(kYGDefaultExperimentalFeatures),
-      useWebDefaults(false),
-      useLegacyStretchBehaviour(false),
-      shouldDiffLayoutWithoutLegacyStretchBehaviour(false),
-      pointScaleFactor(1.0f), logger(logger), cloneNodeCallback(nullptr),
-      context(nullptr) {}
+YGConfig::YGConfig(YGLogger logger) : logger(logger) {}
diff --git a/ReactCommon/yoga/yoga/YGConfig.h b/ReactCommon/yoga/yoga/YGConfig.h
index 0f655d1be3e6a1..941e0dcd2d9210 100644
--- a/ReactCommon/yoga/yoga/YGConfig.h
+++ b/ReactCommon/yoga/yoga/YGConfig.h
@@ -1,23 +1,24 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
+/*
+ *  Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ *  This source code is licensed under the MIT license found in the LICENSE
+ *  file in the root directory of this source tree.
  *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
  */
-
 #pragma once
 #include "Yoga-internal.h"
 #include "Yoga.h"
 
 struct YGConfig {
-  std::array<bool, YGExperimentalFeatureCount> experimentalFeatures;
-  bool useWebDefaults;
-  bool useLegacyStretchBehaviour;
-  bool shouldDiffLayoutWithoutLegacyStretchBehaviour;
-  float pointScaleFactor;
+  std::array<bool, YGExperimentalFeatureCount> experimentalFeatures = {};
+  bool useWebDefaults = false;
+  bool useLegacyStretchBehaviour = false;
+  bool shouldDiffLayoutWithoutLegacyStretchBehaviour = false;
+  float pointScaleFactor = 1.0f;
   YGLogger logger;
-  YGCloneNodeFunc cloneNodeCallback;
-  void* context;
+  YGCloneNodeFunc cloneNodeCallback = nullptr;
+  void* context = nullptr;
+  bool printTree = false;
 
   YGConfig(YGLogger logger);
 };
diff --git a/ReactCommon/yoga/yoga/YGEnums.cpp b/ReactCommon/yoga/yoga/YGEnums.cpp
index 7f16628ce14910..5f8ef9af263b8f 100644
--- a/ReactCommon/yoga/yoga/YGEnums.cpp
+++ b/ReactCommon/yoga/yoga/YGEnums.cpp
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGEnums.h b/ReactCommon/yoga/yoga/YGEnums.h
index 0976d78d947923..db555281374a0f 100644
--- a/ReactCommon/yoga/yoga/YGEnums.h
+++ b/ReactCommon/yoga/yoga/YGEnums.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGFloatOptional.cpp b/ReactCommon/yoga/yoga/YGFloatOptional.cpp
index cb867f3ac2fa7c..c7ade6a2462425 100644
--- a/ReactCommon/yoga/yoga/YGFloatOptional.cpp
+++ b/ReactCommon/yoga/yoga/YGFloatOptional.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGFloatOptional.h b/ReactCommon/yoga/yoga/YGFloatOptional.h
index 114f3577a92c6f..2578b9ddc319e5 100644
--- a/ReactCommon/yoga/yoga/YGFloatOptional.h
+++ b/ReactCommon/yoga/yoga/YGFloatOptional.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -9,12 +9,12 @@
 
 struct YGFloatOptional {
  private:
-  float value_;
-  bool isUndefined_;
+  float value_ = 0;
+  bool isUndefined_ = true;
 
  public:
   explicit YGFloatOptional(float value);
-  explicit YGFloatOptional() : value_(0), isUndefined_(true) {}
+  YGFloatOptional() = default;
 
   // Program will terminate if the value of an undefined is accessed. Please
   // make sure to check if the optional is defined before calling this function.
diff --git a/ReactCommon/yoga/yoga/YGLayout.cpp b/ReactCommon/yoga/yoga/YGLayout.cpp
index 03933ac9ab4665..0f362f88e4fd86 100644
--- a/ReactCommon/yoga/yoga/YGLayout.cpp
+++ b/ReactCommon/yoga/yoga/YGLayout.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -10,28 +10,6 @@
 
 using namespace facebook;
 
-const std::array<float, 2> kYGDefaultDimensionValues = {
-    {YGUndefined, YGUndefined}};
-
-YGLayout::YGLayout()
-    : position(),
-      dimensions(kYGDefaultDimensionValues),
-      margin(),
-      border(),
-      padding(),
-      direction(YGDirectionInherit),
-      computedFlexBasisGeneration(0),
-      computedFlexBasis(YGFloatOptional()),
-      hadOverflow(false),
-      generationCount(0),
-      lastOwnerDirection((YGDirection)-1),
-      nextCachedMeasurementsIndex(0),
-      cachedMeasurements(),
-      measuredDimensions(kYGDefaultDimensionValues),
-      cachedLayout(YGCachedMeasurement()),
-      didUseLegacyFlag(false),
-      doesLegacyStretchFlagAffectsLayout(false) {}
-
 bool YGLayout::operator==(YGLayout layout) const {
   bool isEqual = YGFloatArrayEqual(position, layout.position) &&
       YGFloatArrayEqual(dimensions, layout.dimensions) &&
diff --git a/ReactCommon/yoga/yoga/YGLayout.h b/ReactCommon/yoga/yoga/YGLayout.h
index 1df905d0b80af5..812ed6bd5dcdec 100644
--- a/ReactCommon/yoga/yoga/YGLayout.h
+++ b/ReactCommon/yoga/yoga/YGLayout.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -9,33 +9,36 @@
 #include "YGFloatOptional.h"
 #include "Yoga-internal.h"
 
+constexpr std::array<float, 2> kYGDefaultDimensionValues = {
+    {YGUndefined, YGUndefined}};
+
 struct YGLayout {
-  std::array<float, 4> position;
-  std::array<float, 2> dimensions;
-  std::array<float, 6> margin;
-  std::array<float, 6> border;
-  std::array<float, 6> padding;
-  YGDirection direction;
+  std::array<float, 4> position = {};
+  std::array<float, 2> dimensions = kYGDefaultDimensionValues;
+  std::array<float, 6> margin = {};
+  std::array<float, 6> border = {};
+  std::array<float, 6> padding = {};
+  YGDirection direction = YGDirectionInherit;
 
-  uint32_t computedFlexBasisGeneration;
-  YGFloatOptional computedFlexBasis;
-  bool hadOverflow;
+  uint32_t computedFlexBasisGeneration = 0;
+  YGFloatOptional computedFlexBasis = {};
+  bool hadOverflow = false;
 
   // Instead of recomputing the entire layout every single time, we
   // cache some information to break early when nothing changed
-  uint32_t generationCount;
-  YGDirection lastOwnerDirection;
+  uint32_t generationCount = 0;
+  YGDirection lastOwnerDirection = (YGDirection)-1;
 
-  uint32_t nextCachedMeasurementsIndex;
+  uint32_t nextCachedMeasurementsIndex = 0;
   std::array<YGCachedMeasurement, YG_MAX_CACHED_RESULT_COUNT>
-      cachedMeasurements;
-  std::array<float, 2> measuredDimensions;
+      cachedMeasurements = {};
+  std::array<float, 2> measuredDimensions = kYGDefaultDimensionValues;
 
-  YGCachedMeasurement cachedLayout;
-  bool didUseLegacyFlag;
-  bool doesLegacyStretchFlagAffectsLayout;
+  YGCachedMeasurement cachedLayout = YGCachedMeasurement();
+  bool didUseLegacyFlag = false;
+  bool doesLegacyStretchFlagAffectsLayout = false;
 
-  YGLayout();
+  YGLayout() = default;
 
   bool operator==(YGLayout layout) const;
   bool operator!=(YGLayout layout) const {
diff --git a/ReactCommon/yoga/yoga/YGMacros.h b/ReactCommon/yoga/yoga/YGMacros.h
index 15ed81d3820a2d..0aafdca36f22c5 100644
--- a/ReactCommon/yoga/yoga/YGMacros.h
+++ b/ReactCommon/yoga/yoga/YGMacros.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGNode.cpp b/ReactCommon/yoga/yoga/YGNode.cpp
index a80484f168cc19..189a3df1c2c120 100644
--- a/ReactCommon/yoga/yoga/YGNode.cpp
+++ b/ReactCommon/yoga/yoga/YGNode.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -12,8 +12,8 @@
 using namespace facebook;
 
 YGFloatOptional YGNode::getLeadingPosition(
-    const YGFlexDirection& axis,
-    const float& axisSize) const {
+    const YGFlexDirection axis,
+    const float axisSize) const {
   if (YGFlexDirectionIsRow(axis)) {
     const YGValue* leadingPosition =
         YGComputedEdgeValue(style_.position, YGEdgeStart, &YGValueUndefined);
@@ -31,8 +31,8 @@ YGFloatOptional YGNode::getLeadingPosition(
 }
 
 YGFloatOptional YGNode::getTrailingPosition(
-    const YGFlexDirection& axis,
-    const float& axisSize) const {
+    const YGFlexDirection axis,
+    const float axisSize) const {
   if (YGFlexDirectionIsRow(axis)) {
     const YGValue* trailingPosition =
         YGComputedEdgeValue(style_.position, YGEdgeEnd, &YGValueUndefined);
@@ -49,7 +49,7 @@ YGFloatOptional YGNode::getTrailingPosition(
       : YGResolveValue(*trailingPosition, axisSize);
 }
 
-bool YGNode::isLeadingPositionDefined(const YGFlexDirection& axis) const {
+bool YGNode::isLeadingPositionDefined(const YGFlexDirection axis) const {
   return (YGFlexDirectionIsRow(axis) &&
           YGComputedEdgeValue(style_.position, YGEdgeStart, &YGValueUndefined)
                   ->unit != YGUnitUndefined) ||
@@ -57,7 +57,7 @@ bool YGNode::isLeadingPositionDefined(const YGFlexDirection& axis) const {
           ->unit != YGUnitUndefined;
 }
 
-bool YGNode::isTrailingPosDefined(const YGFlexDirection& axis) const {
+bool YGNode::isTrailingPosDefined(const YGFlexDirection axis) const {
   return (YGFlexDirectionIsRow(axis) &&
           YGComputedEdgeValue(style_.position, YGEdgeEnd, &YGValueUndefined)
                   ->unit != YGUnitUndefined) ||
@@ -66,8 +66,8 @@ bool YGNode::isTrailingPosDefined(const YGFlexDirection& axis) const {
 }
 
 YGFloatOptional YGNode::getLeadingMargin(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   if (YGFlexDirectionIsRow(axis) &&
       style_.margin[YGEdgeStart].unit != YGUnitUndefined) {
     return YGResolveValueMargin(style_.margin[YGEdgeStart], widthSize);
@@ -79,8 +79,8 @@ YGFloatOptional YGNode::getLeadingMargin(
 }
 
 YGFloatOptional YGNode::getTrailingMargin(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   if (YGFlexDirectionIsRow(axis) &&
       style_.margin[YGEdgeEnd].unit != YGUnitUndefined) {
     return YGResolveValueMargin(style_.margin[YGEdgeEnd], widthSize);
@@ -92,8 +92,8 @@ YGFloatOptional YGNode::getTrailingMargin(
 }
 
 YGFloatOptional YGNode::getMarginForAxis(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   return getLeadingMargin(axis, widthSize) + getTrailingMargin(axis, widthSize);
 }
 
@@ -204,8 +204,8 @@ void YGNode::setLayoutDimension(float dimension, int index) {
 // If both left and right are defined, then use left. Otherwise return
 // +left or -right depending on which is defined.
 YGFloatOptional YGNode::relativePosition(
-    const YGFlexDirection& axis,
-    const float& axisSize) const {
+    const YGFlexDirection axis,
+    const float axisSize) const {
   if (isLeadingPositionDefined(axis)) {
     return getLeadingPosition(axis, axisSize);
   }
@@ -424,7 +424,7 @@ bool YGNode::isNodeFlexible() {
       (resolveFlexGrow() != 0 || resolveFlexShrink() != 0));
 }
 
-float YGNode::getLeadingBorder(const YGFlexDirection& axis) const {
+float YGNode::getLeadingBorder(const YGFlexDirection axis) const {
   if (YGFlexDirectionIsRow(axis) &&
       style_.border[YGEdgeStart].unit != YGUnitUndefined &&
       !yoga::isUndefined(style_.border[YGEdgeStart].value) &&
@@ -437,7 +437,7 @@ float YGNode::getLeadingBorder(const YGFlexDirection& axis) const {
   return YGFloatMax(computedEdgeValue, 0.0f);
 }
 
-float YGNode::getTrailingBorder(const YGFlexDirection& flexDirection) const {
+float YGNode::getTrailingBorder(const YGFlexDirection flexDirection) const {
   if (YGFlexDirectionIsRow(flexDirection) &&
       style_.border[YGEdgeEnd].unit != YGUnitUndefined &&
       !yoga::isUndefined(style_.border[YGEdgeEnd].value) &&
@@ -452,13 +452,13 @@ float YGNode::getTrailingBorder(const YGFlexDirection& flexDirection) const {
 }
 
 YGFloatOptional YGNode::getLeadingPadding(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   const YGFloatOptional& paddingEdgeStart =
       YGResolveValue(style_.padding[YGEdgeStart], widthSize);
   if (YGFlexDirectionIsRow(axis) &&
       style_.padding[YGEdgeStart].unit != YGUnitUndefined &&
-      !paddingEdgeStart.isUndefined() && paddingEdgeStart.getValue() > 0.0f) {
+      !paddingEdgeStart.isUndefined() && paddingEdgeStart.getValue() >= 0.0f) {
     return paddingEdgeStart;
   }
 
@@ -469,8 +469,8 @@ YGFloatOptional YGNode::getLeadingPadding(
 }
 
 YGFloatOptional YGNode::getTrailingPadding(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   if (YGFlexDirectionIsRow(axis) &&
       style_.padding[YGEdgeEnd].unit != YGUnitUndefined &&
       !YGResolveValue(style_.padding[YGEdgeEnd], widthSize).isUndefined() &&
@@ -486,15 +486,15 @@ YGFloatOptional YGNode::getTrailingPadding(
 }
 
 YGFloatOptional YGNode::getLeadingPaddingAndBorder(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   return getLeadingPadding(axis, widthSize) +
       YGFloatOptional(getLeadingBorder(axis));
 }
 
 YGFloatOptional YGNode::getTrailingPaddingAndBorder(
-    const YGFlexDirection& axis,
-    const float& widthSize) const {
+    const YGFlexDirection axis,
+    const float widthSize) const {
   return getTrailingPadding(axis, widthSize) +
       YGFloatOptional(getTrailingBorder(axis));
 }
diff --git a/ReactCommon/yoga/yoga/YGNode.h b/ReactCommon/yoga/yoga/YGNode.h
index 7120846ef731af..678926d3a0dc03 100644
--- a/ReactCommon/yoga/yoga/YGNode.h
+++ b/ReactCommon/yoga/yoga/YGNode.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -17,6 +17,7 @@ struct YGNode {
   void* context_ = nullptr;
   YGPrintFunc print_ = nullptr;
   bool hasNewLayout_ = true;
+  bool isReferenceBaseline_ = false;
   YGNodeType nodeType_ = YGNodeTypeDefault;
   YGMeasureFunc measure_ = nullptr;
   YGBaselineFunc baseline_ = nullptr;
@@ -32,8 +33,8 @@ struct YGNode {
       {YGValueUndefined, YGValueUndefined}};
 
   YGFloatOptional relativePosition(
-      const YGFlexDirection& axis,
-      const float& axisSize) const;
+      const YGFlexDirection axis,
+      const float axisSize) const;
 
  public:
   YGNode() = default;
@@ -93,6 +94,10 @@ struct YGNode {
     return lineIndex_;
   }
 
+  bool isReferenceBaseline() {
+    return isReferenceBaseline_;
+  }
+
   // returns the YGNodeRef that owns this YGNode. An owner is used to identify
   // the YogaTree that a YGNode belongs to.
   // This method will return the parent of the YGNode when a YGNode only belongs
@@ -133,36 +138,36 @@ struct YGNode {
 
   // Methods related to positions, margin, padding and border
   YGFloatOptional getLeadingPosition(
-      const YGFlexDirection& axis,
-      const float& axisSize) const;
-  bool isLeadingPositionDefined(const YGFlexDirection& axis) const;
-  bool isTrailingPosDefined(const YGFlexDirection& axis) const;
+      const YGFlexDirection axis,
+      const float axisSize) const;
+  bool isLeadingPositionDefined(const YGFlexDirection axis) const;
+  bool isTrailingPosDefined(const YGFlexDirection axis) const;
   YGFloatOptional getTrailingPosition(
-      const YGFlexDirection& axis,
-      const float& axisSize) const;
+      const YGFlexDirection axis,
+      const float axisSize) const;
   YGFloatOptional getLeadingMargin(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   YGFloatOptional getTrailingMargin(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
-  float getLeadingBorder(const YGFlexDirection& flexDirection) const;
-  float getTrailingBorder(const YGFlexDirection& flexDirection) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
+  float getLeadingBorder(const YGFlexDirection flexDirection) const;
+  float getTrailingBorder(const YGFlexDirection flexDirection) const;
   YGFloatOptional getLeadingPadding(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   YGFloatOptional getTrailingPadding(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   YGFloatOptional getLeadingPaddingAndBorder(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   YGFloatOptional getTrailingPaddingAndBorder(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   YGFloatOptional getMarginForAxis(
-      const YGFlexDirection& axis,
-      const float& widthSize) const;
+      const YGFlexDirection axis,
+      const float widthSize) const;
   // Setters
 
   void setContext(void* context) {
@@ -211,6 +216,10 @@ struct YGNode {
     lineIndex_ = lineIndex;
   }
 
+  void setIsReferenceBaseline(bool isReferenceBaseline) {
+    isReferenceBaseline_ = isReferenceBaseline;
+  }
+
   void setOwner(YGNodeRef owner) {
     owner_ = owner;
   }
diff --git a/ReactCommon/yoga/yoga/YGNodePrint.cpp b/ReactCommon/yoga/yoga/YGNodePrint.cpp
index ab3aa7c7b3be04..cd11bec6cad4bc 100644
--- a/ReactCommon/yoga/yoga/YGNodePrint.cpp
+++ b/ReactCommon/yoga/yoga/YGNodePrint.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGNodePrint.h b/ReactCommon/yoga/yoga/YGNodePrint.h
index 16259fcff7cf8e..a4f24cb5bec929 100644
--- a/ReactCommon/yoga/yoga/YGNodePrint.h
+++ b/ReactCommon/yoga/yoga/YGNodePrint.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/YGStyle.cpp b/ReactCommon/yoga/yoga/YGStyle.cpp
index 06d0f2a4b79c4e..46a65b2803f1d0 100644
--- a/ReactCommon/yoga/yoga/YGStyle.cpp
+++ b/ReactCommon/yoga/yoga/YGStyle.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -7,51 +7,6 @@
  */
 #include "YGStyle.h"
 
-const YGValue kYGValueUndefined = {0, YGUnitUndefined};
-
-const YGValue kYGValueAuto = {0, YGUnitAuto};
-
-const std::array<YGValue, YGEdgeCount> kYGDefaultEdgeValuesUnit = {
-    {kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined,
-     kYGValueUndefined}};
-
-const std::array<YGValue, 2> kYGDefaultDimensionValuesAutoUnit = {
-    {kYGValueAuto, kYGValueAuto}};
-
-const std::array<YGValue, 2> kYGDefaultDimensionValuesUnit = {
-    {kYGValueUndefined, kYGValueUndefined}};
-
-YGStyle::YGStyle()
-    : direction(YGDirectionInherit),
-      flexDirection(YGFlexDirectionColumn),
-      justifyContent(YGJustifyFlexStart),
-      alignContent(YGAlignFlexStart),
-      alignItems(YGAlignStretch),
-      alignSelf(YGAlignAuto),
-      positionType(YGPositionTypeRelative),
-      flexWrap(YGWrapNoWrap),
-      overflow(YGOverflowVisible),
-      display(YGDisplayFlex),
-      flex(YGFloatOptional()),
-      flexGrow(YGFloatOptional()),
-      flexShrink(YGFloatOptional()),
-      flexBasis(kYGValueAuto),
-      margin(kYGDefaultEdgeValuesUnit),
-      position(kYGDefaultEdgeValuesUnit),
-      padding(kYGDefaultEdgeValuesUnit),
-      border(kYGDefaultEdgeValuesUnit),
-      dimensions(kYGDefaultDimensionValuesAutoUnit),
-      minDimensions(kYGDefaultDimensionValuesUnit),
-      maxDimensions(kYGDefaultDimensionValuesUnit),
-      aspectRatio(YGFloatOptional()) {}
-
 // Yoga specific properties, not compatible with flexbox specification
 bool YGStyle::operator==(const YGStyle& style) {
   bool areNonFloatValuesEqual = direction == style.direction &&
diff --git a/ReactCommon/yoga/yoga/YGStyle.h b/ReactCommon/yoga/yoga/YGStyle.h
index 3f4bbd34726ae7..04a74545d6c871 100644
--- a/ReactCommon/yoga/yoga/YGStyle.h
+++ b/ReactCommon/yoga/yoga/YGStyle.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -10,32 +10,52 @@
 #include "Yoga-internal.h"
 #include "Yoga.h"
 
+constexpr YGValue kYGValueUndefined = {0, YGUnitUndefined};
+
+constexpr YGValue kYGValueAuto = {0, YGUnitAuto};
+
+constexpr std::array<YGValue, YGEdgeCount> kYGDefaultEdgeValuesUnit = {
+    {kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined,
+     kYGValueUndefined}};
+
+constexpr std::array<YGValue, 2> kYGDefaultDimensionValuesUnit = {
+    {kYGValueUndefined, kYGValueUndefined}};
+
 struct YGStyle {
-  YGDirection direction;
-  YGFlexDirection flexDirection;
-  YGJustify justifyContent;
-  YGAlign alignContent;
-  YGAlign alignItems;
-  YGAlign alignSelf;
-  YGPositionType positionType;
-  YGWrap flexWrap;
-  YGOverflow overflow;
-  YGDisplay display;
-  YGFloatOptional flex;
-  YGFloatOptional flexGrow;
-  YGFloatOptional flexShrink;
-  YGValue flexBasis;
-  std::array<YGValue, YGEdgeCount> margin;
-  std::array<YGValue, YGEdgeCount> position;
-  std::array<YGValue, YGEdgeCount> padding;
-  std::array<YGValue, YGEdgeCount> border;
-  std::array<YGValue, 2> dimensions;
-  std::array<YGValue, 2> minDimensions;
-  std::array<YGValue, 2> maxDimensions;
+  using Dimensions = std::array<YGValue, 2>;
+
+  YGDirection direction = YGDirectionInherit;
+  YGFlexDirection flexDirection = YGFlexDirectionColumn;
+  YGJustify justifyContent = YGJustifyFlexStart;
+  YGAlign alignContent = YGAlignFlexStart;
+  YGAlign alignItems = YGAlignStretch;
+  YGAlign alignSelf = YGAlignAuto;
+  YGPositionType positionType = YGPositionTypeRelative;
+  YGWrap flexWrap = YGWrapNoWrap;
+  YGOverflow overflow = YGOverflowVisible;
+  YGDisplay display = YGDisplayFlex;
+  YGFloatOptional flex = {};
+  YGFloatOptional flexGrow = {};
+  YGFloatOptional flexShrink = {};
+  YGValue flexBasis = kYGValueAuto;
+  std::array<YGValue, YGEdgeCount> margin = kYGDefaultEdgeValuesUnit;
+  std::array<YGValue, YGEdgeCount> position = kYGDefaultEdgeValuesUnit;
+  std::array<YGValue, YGEdgeCount> padding = kYGDefaultEdgeValuesUnit;
+  std::array<YGValue, YGEdgeCount> border = kYGDefaultEdgeValuesUnit;
+  Dimensions dimensions = {{kYGValueAuto, kYGValueAuto}};
+  Dimensions minDimensions = kYGDefaultDimensionValuesUnit;
+  Dimensions maxDimensions = kYGDefaultDimensionValuesUnit;
   // Yoga specific properties, not compatible with flexbox specification
-  YGFloatOptional aspectRatio;
+  YGFloatOptional aspectRatio = {};
 
-  YGStyle();
+  YGStyle() = default;
   bool operator==(const YGStyle& style);
 
   bool operator!=(YGStyle style) {
diff --git a/ReactCommon/yoga/yoga/Yoga-internal.h b/ReactCommon/yoga/yoga/Yoga-internal.h
index 941147e874d7b9..0e02646cdcd58d 100644
--- a/ReactCommon/yoga/yoga/Yoga-internal.h
+++ b/ReactCommon/yoga/yoga/Yoga-internal.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
diff --git a/ReactCommon/yoga/yoga/Yoga.cpp b/ReactCommon/yoga/yoga/Yoga.cpp
index d63a45fabe822c..955f9ae064e6ac 100644
--- a/ReactCommon/yoga/yoga/Yoga.cpp
+++ b/ReactCommon/yoga/yoga/Yoga.cpp
@@ -1,11 +1,10 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
  *
  */
-
 #include "Yoga.h"
 #include <float.h>
 #include <string.h>
@@ -198,6 +197,10 @@ bool YGNodeGetHasNewLayout(YGNodeRef node) {
   return node->getHasNewLayout();
 }
 
+void YGConfigSetPrintTreeFlag(YGConfigRef config, bool enabled) {
+  config->printTree = enabled;
+}
+
 void YGNodeSetHasNewLayout(YGNodeRef node, bool hasNewLayout) {
   node->setHasNewLayout(hasNewLayout);
 }
@@ -377,6 +380,14 @@ void YGConfigCopy(const YGConfigRef dest, const YGConfigRef src) {
   memcpy(dest, src, sizeof(YGConfig));
 }
 
+void YGNodeSetIsReferenceBaseline(YGNodeRef node, bool isReferenceBaseline) {
+  node->setIsReferenceBaseline(isReferenceBaseline);
+}
+
+bool YGNodeIsReferenceBaseline(YGNodeRef node) {
+  return node->isReferenceBaseline();
+}
+
 void YGNodeInsertChild(
     const YGNodeRef node,
     const YGNodeRef child,
@@ -598,49 +609,46 @@ struct StyleProp {
   }
   static void set(YGNodeRef node, T newValue) {
     if (node->getStyle().*P != newValue) {
-      YGStyle style = node->getStyle();
-      style.*P = newValue;
-      node->setStyle(style);
+      node->getStyle().*P = newValue;
       node->markDirtyAndPropogate();
     }
   }
 };
 
-} // namespace
+struct Value {
+  template <YGUnit U>
+  static YGValue create(float value) {
+    return {
+        YGFloatSanitize(value),
+        YGFloatIsUndefined(value) ? YGUnitUndefined : U,
+    };
+  }
+};
 
-#define YG_NODE_STYLE_PROPERTY_SETTER_UNIT_IMPL(                          \
-    type, name, paramName, instanceName)                                  \
-  void YGNodeStyleSet##name(const YGNodeRef node, const type paramName) { \
-    YGValue value = {                                                     \
-        YGFloatSanitize(paramName),                                       \
-        YGFloatIsUndefined(paramName) ? YGUnitUndefined : YGUnitPoint,    \
-    };                                                                    \
-    if ((node->getStyle().instanceName.value != value.value &&            \
-         value.unit != YGUnitUndefined) ||                                \
-        node->getStyle().instanceName.unit != value.unit) {               \
-      YGStyle style = node->getStyle();                                   \
-      style.instanceName = value;                                         \
-      node->setStyle(style);                                              \
-      node->markDirtyAndPropogate();                                      \
-    }                                                                     \
-  }                                                                       \
-                                                                          \
-  void YGNodeStyleSet##name##Percent(                                     \
-      const YGNodeRef node, const type paramName) {                       \
-    YGValue value = {                                                     \
-        YGFloatSanitize(paramName),                                       \
-        YGFloatIsUndefined(paramName) ? YGUnitUndefined : YGUnitPercent,  \
-    };                                                                    \
-    if ((node->getStyle().instanceName.value != value.value &&            \
-         value.unit != YGUnitUndefined) ||                                \
-        node->getStyle().instanceName.unit != value.unit) {               \
-      YGStyle style = node->getStyle();                                   \
-                                                                          \
-      style.instanceName = value;                                         \
-      node->setStyle(style);                                              \
-      node->markDirtyAndPropogate();                                      \
-    }                                                                     \
+template <YGStyle::Dimensions YGStyle::*P>
+struct DimensionProp {
+  template <YGDimension idx>
+  static WIN_STRUCT(YGValue) get(YGNodeRef node) {
+    YGValue value = (node->getStyle().*P)[idx];
+    if (value.unit == YGUnitUndefined || value.unit == YGUnitAuto) {
+      value.value = YGUndefined;
+    }
+    return WIN_STRUCT_REF(value);
+  }
+
+  template <YGDimension idx, YGUnit U>
+  static void set(YGNodeRef node, float newValue) {
+    YGValue value = Value::create<U>(newValue);
+    if (((node->getStyle().*P)[idx].value != value.value &&
+         value.unit != YGUnitUndefined) ||
+        (node->getStyle().*P)[idx].unit != value.unit) {
+      (node->getStyle().*P)[idx] = value;
+      node->markDirtyAndPropogate();
+    }
   }
+};
+
+} // namespace
 
 #define YG_NODE_STYLE_PROPERTY_SETTER_UNIT_AUTO_IMPL(                        \
     type, name, paramName, instanceName)                                     \
@@ -652,9 +660,7 @@ struct StyleProp {
     if ((node->getStyle().instanceName.value != value.value &&               \
          value.unit != YGUnitUndefined) ||                                   \
         node->getStyle().instanceName.unit != value.unit) {                  \
-      YGStyle style = node->getStyle();                                      \
-      style.instanceName = value;                                            \
-      node->setStyle(style);                                                 \
+      node->getStyle().instanceName = value;                                 \
       node->markDirtyAndPropogate();                                         \
     }                                                                        \
   }                                                                          \
@@ -663,37 +669,20 @@ struct StyleProp {
       const YGNodeRef node, const type paramName) {                          \
     if (node->getStyle().instanceName.value != YGFloatSanitize(paramName) || \
         node->getStyle().instanceName.unit != YGUnitPercent) {               \
-      YGStyle style = node->getStyle();                                      \
-      style.instanceName.value = YGFloatSanitize(paramName);                 \
-      style.instanceName.unit =                                              \
-          YGFloatIsUndefined(paramName) ? YGUnitAuto : YGUnitPercent;        \
-      node->setStyle(style);                                                 \
+      node->getStyle().instanceName = YGFloatIsUndefined(paramName)          \
+          ? YGValue{0, YGUnitAuto}                                           \
+          : YGValue{paramName, YGUnitPercent};                               \
       node->markDirtyAndPropogate();                                         \
     }                                                                        \
   }                                                                          \
                                                                              \
   void YGNodeStyleSet##name##Auto(const YGNodeRef node) {                    \
     if (node->getStyle().instanceName.unit != YGUnitAuto) {                  \
-      YGStyle style = node->getStyle();                                      \
-      style.instanceName.value = 0;                                          \
-      style.instanceName.unit = YGUnitAuto;                                  \
-      node->setStyle(style);                                                 \
+      node->getStyle().instanceName = {0, YGUnitAuto};                       \
       node->markDirtyAndPropogate();                                         \
     }                                                                        \
   }
 
-#define YG_NODE_STYLE_PROPERTY_UNIT_IMPL(type, name, paramName, instanceName) \
-  YG_NODE_STYLE_PROPERTY_SETTER_UNIT_IMPL(                                    \
-      float, name, paramName, instanceName)                                   \
-                                                                              \
-  type YGNodeStyleGet##name(const YGNodeRef node) {                           \
-    YGValue value = node->getStyle().instanceName;                            \
-    if (value.unit == YGUnitUndefined || value.unit == YGUnitAuto) {          \
-      value.value = YGUndefined;                                              \
-    }                                                                         \
-    return value;                                                             \
-  }
-
 #define YG_NODE_STYLE_PROPERTY_UNIT_AUTO_IMPL(                       \
     type, name, paramName, instanceName)                             \
   YG_NODE_STYLE_PROPERTY_SETTER_UNIT_AUTO_IMPL(                      \
@@ -710,10 +699,7 @@ struct StyleProp {
 #define YG_NODE_STYLE_EDGE_PROPERTY_UNIT_AUTO_IMPL(type, name, instanceName) \
   void YGNodeStyleSet##name##Auto(const YGNodeRef node, const YGEdge edge) { \
     if (node->getStyle().instanceName[edge].unit != YGUnitAuto) {            \
-      YGStyle style = node->getStyle();                                      \
-      style.instanceName[edge].value = 0;                                    \
-      style.instanceName[edge].unit = YGUnitAuto;                            \
-      node->setStyle(style);                                                 \
+      node->getStyle().instanceName[edge] = {0, YGUnitAuto};                 \
       node->markDirtyAndPropogate();                                         \
     }                                                                        \
   }
@@ -729,9 +715,7 @@ struct StyleProp {
     if ((node->getStyle().instanceName[edge].value != value.value &&     \
          value.unit != YGUnitUndefined) ||                               \
         node->getStyle().instanceName[edge].unit != value.unit) {        \
-      YGStyle style = node->getStyle();                                  \
-      style.instanceName[edge] = value;                                  \
-      node->setStyle(style);                                             \
+      node->getStyle().instanceName[edge] = value;                       \
       node->markDirtyAndPropogate();                                     \
     }                                                                    \
   }                                                                      \
@@ -745,9 +729,7 @@ struct StyleProp {
     if ((node->getStyle().instanceName[edge].value != value.value &&     \
          value.unit != YGUnitUndefined) ||                               \
         node->getStyle().instanceName[edge].unit != value.unit) {        \
-      YGStyle style = node->getStyle();                                  \
-      style.instanceName[edge] = value;                                  \
-      node->setStyle(style);                                             \
+      node->getStyle().instanceName[edge] = value;                       \
       node->markDirtyAndPropogate();                                     \
     }                                                                    \
   }                                                                      \
@@ -875,13 +857,8 @@ YGDisplay YGNodeStyleGetDisplay(const YGNodeRef node) {
 // TODO(T26792433): Change the API to accept YGFloatOptional.
 void YGNodeStyleSetFlex(const YGNodeRef node, const float flex) {
   if (node->getStyle().flex != flex) {
-    YGStyle style = node->getStyle();
-    if (YGFloatIsUndefined(flex)) {
-      style.flex = YGFloatOptional();
-    } else {
-      style.flex = YGFloatOptional(flex);
-    }
-    node->setStyle(style);
+    node->getStyle().flex =
+        YGFloatIsUndefined(flex) ? YGFloatOptional() : YGFloatOptional(flex);
     node->markDirtyAndPropogate();
   }
 }
@@ -895,13 +872,9 @@ float YGNodeStyleGetFlex(const YGNodeRef node) {
 // TODO(T26792433): Change the API to accept YGFloatOptional.
 void YGNodeStyleSetFlexGrow(const YGNodeRef node, const float flexGrow) {
   if (node->getStyle().flexGrow != flexGrow) {
-    YGStyle style = node->getStyle();
-    if (YGFloatIsUndefined(flexGrow)) {
-      style.flexGrow = YGFloatOptional();
-    } else {
-      style.flexGrow = YGFloatOptional(flexGrow);
-    }
-    node->setStyle(style);
+    node->getStyle().flexGrow = YGFloatIsUndefined(flexGrow)
+        ? YGFloatOptional()
+        : YGFloatOptional(flexGrow);
     node->markDirtyAndPropogate();
   }
 }
@@ -909,13 +882,9 @@ void YGNodeStyleSetFlexGrow(const YGNodeRef node, const float flexGrow) {
 // TODO(T26792433): Change the API to accept YGFloatOptional.
 void YGNodeStyleSetFlexShrink(const YGNodeRef node, const float flexShrink) {
   if (node->getStyle().flexShrink != flexShrink) {
-    YGStyle style = node->getStyle();
-    if (YGFloatIsUndefined(flexShrink)) {
-      style.flexShrink = YGFloatOptional();
-    } else {
-      style.flexShrink = YGFloatOptional(flexShrink);
-    }
-    node->setStyle(style);
+    node->getStyle().flexShrink = YGFloatIsUndefined(flexShrink)
+        ? YGFloatOptional()
+        : YGFloatOptional(flexShrink);
     node->markDirtyAndPropogate();
   }
 }
@@ -937,9 +906,7 @@ void YGNodeStyleSetFlexBasis(const YGNodeRef node, const float flexBasis) {
   if ((node->getStyle().flexBasis.value != value.value &&
        value.unit != YGUnitUndefined) ||
       node->getStyle().flexBasis.unit != value.unit) {
-    YGStyle style = node->getStyle();
-    style.flexBasis = value;
-    node->setStyle(style);
+    node->getStyle().flexBasis = value;
     node->markDirtyAndPropogate();
   }
 }
@@ -949,21 +916,16 @@ void YGNodeStyleSetFlexBasisPercent(
     const float flexBasisPercent) {
   if (node->getStyle().flexBasis.value != flexBasisPercent ||
       node->getStyle().flexBasis.unit != YGUnitPercent) {
-    YGStyle style = node->getStyle();
-    style.flexBasis.value = YGFloatSanitize(flexBasisPercent);
-    style.flexBasis.unit =
-        YGFloatIsUndefined(flexBasisPercent) ? YGUnitAuto : YGUnitPercent;
-    node->setStyle(style);
+    node->getStyle().flexBasis = YGFloatIsUndefined(flexBasisPercent)
+        ? YGValue{0, YGUnitAuto}
+        : YGValue{flexBasisPercent, YGUnitPercent};
     node->markDirtyAndPropogate();
   }
 }
 
 void YGNodeStyleSetFlexBasisAuto(const YGNodeRef node) {
   if (node->getStyle().flexBasis.unit != YGUnitAuto) {
-    YGStyle style = node->getStyle();
-    style.flexBasis.value = 0;
-    style.flexBasis.unit = YGUnitAuto;
-    node->setStyle(style);
+    node->getStyle().flexBasis = {0, YGUnitAuto};
     node->markDirtyAndPropogate();
   }
 }
@@ -985,9 +947,7 @@ void YGNodeStyleSetBorder(
   if ((node->getStyle().border[edge].value != value.value &&
        value.unit != YGUnitUndefined) ||
       node->getStyle().border[edge].unit != value.unit) {
-    YGStyle style = node->getStyle();
-    style.border[edge] = value;
-    node->setStyle(style);
+    node->getStyle().border[edge] = value;
     node->markDirtyAndPropogate();
   }
 }
@@ -1014,9 +974,7 @@ float YGNodeStyleGetAspectRatio(const YGNodeRef node) {
 // TODO(T26792433): Change the API to accept YGFloatOptional.
 void YGNodeStyleSetAspectRatio(const YGNodeRef node, const float aspectRatio) {
   if (node->getStyle().aspectRatio != aspectRatio) {
-    YGStyle style = node->getStyle();
-    style.aspectRatio = YGFloatOptional(aspectRatio);
-    node->setStyle(style);
+    node->getStyle().aspectRatio = YGFloatOptional(aspectRatio);
     node->markDirtyAndPropogate();
   }
 }
@@ -1031,26 +989,59 @@ YG_NODE_STYLE_PROPERTY_UNIT_AUTO_IMPL(
     Height,
     height,
     dimensions[YGDimensionHeight]);
-YG_NODE_STYLE_PROPERTY_UNIT_IMPL(
-    YGValue,
-    MinWidth,
-    minWidth,
-    minDimensions[YGDimensionWidth]);
-YG_NODE_STYLE_PROPERTY_UNIT_IMPL(
-    YGValue,
-    MinHeight,
-    minHeight,
-    minDimensions[YGDimensionHeight]);
-YG_NODE_STYLE_PROPERTY_UNIT_IMPL(
-    YGValue,
-    MaxWidth,
-    maxWidth,
-    maxDimensions[YGDimensionWidth]);
-YG_NODE_STYLE_PROPERTY_UNIT_IMPL(
-    YGValue,
-    MaxHeight,
-    maxHeight,
-    maxDimensions[YGDimensionHeight]);
+
+void YGNodeStyleSetMinWidth(const YGNodeRef node, const float minWidth) {
+  DimensionProp<&YGStyle::minDimensions>::set<YGDimensionWidth, YGUnitPoint>(
+      node, minWidth);
+}
+void YGNodeStyleSetMinWidthPercent(const YGNodeRef node, const float minWidth) {
+  DimensionProp<&YGStyle::minDimensions>::set<YGDimensionWidth, YGUnitPercent>(
+      node, minWidth);
+}
+YGValue YGNodeStyleGetMinWidth(const YGNodeRef node) {
+  return DimensionProp<&YGStyle::minDimensions>::get<YGDimensionWidth>(node);
+};
+
+void YGNodeStyleSetMinHeight(const YGNodeRef node, const float minHeight) {
+  DimensionProp<&YGStyle::minDimensions>::set<YGDimensionHeight, YGUnitPoint>(
+      node, minHeight);
+}
+void YGNodeStyleSetMinHeightPercent(
+    const YGNodeRef node,
+    const float minHeight) {
+  DimensionProp<&YGStyle::minDimensions>::set<YGDimensionHeight, YGUnitPercent>(
+      node, minHeight);
+}
+YGValue YGNodeStyleGetMinHeight(const YGNodeRef node) {
+  return DimensionProp<&YGStyle::minDimensions>::get<YGDimensionHeight>(node);
+};
+
+void YGNodeStyleSetMaxWidth(const YGNodeRef node, const float maxWidth) {
+  DimensionProp<&YGStyle::maxDimensions>::set<YGDimensionWidth, YGUnitPoint>(
+      node, maxWidth);
+}
+void YGNodeStyleSetMaxWidthPercent(const YGNodeRef node, const float maxWidth) {
+  DimensionProp<&YGStyle::maxDimensions>::set<YGDimensionWidth, YGUnitPercent>(
+      node, maxWidth);
+}
+YGValue YGNodeStyleGetMaxWidth(const YGNodeRef node) {
+  return DimensionProp<&YGStyle::maxDimensions>::get<YGDimensionWidth>(node);
+};
+
+void YGNodeStyleSetMaxHeight(const YGNodeRef node, const float maxHeight) {
+  DimensionProp<&YGStyle::maxDimensions>::set<YGDimensionHeight, YGUnitPoint>(
+      node, maxHeight);
+}
+void YGNodeStyleSetMaxHeightPercent(
+    const YGNodeRef node,
+    const float maxHeight) {
+  DimensionProp<&YGStyle::maxDimensions>::set<YGDimensionHeight, YGUnitPercent>(
+      node, maxHeight);
+}
+YGValue YGNodeStyleGetMaxHeight(const YGNodeRef node) {
+  return DimensionProp<&YGStyle::maxDimensions>::get<YGDimensionHeight>(node);
+};
+
 YG_NODE_LAYOUT_PROPERTY_IMPL(float, Left, position[YGEdgeLeft]);
 YG_NODE_LAYOUT_PROPERTY_IMPL(float, Top, position[YGEdgeTop]);
 YG_NODE_LAYOUT_PROPERTY_IMPL(float, Right, position[YGEdgeRight]);
@@ -1155,7 +1146,8 @@ static float YGBaseline(const YGNodeRef node) {
     if (child->getStyle().positionType == YGPositionTypeAbsolute) {
       continue;
     }
-    if (YGNodeAlignItem(node, child) == YGAlignBaseline) {
+    if (YGNodeAlignItem(node, child) == YGAlignBaseline ||
+        child->isReferenceBaseline()) {
       baselineChild = child;
       break;
     }
@@ -1228,9 +1220,9 @@ static inline bool YGNodeIsLayoutDimDefined(
 
 static YGFloatOptional YGNodeBoundAxisWithinMinAndMax(
     const YGNodeRef node,
-    const YGFlexDirection& axis,
-    const float& value,
-    const float& axisSize) {
+    const YGFlexDirection axis,
+    const float value,
+    const float axisSize) {
   YGFloatOptional min;
   YGFloatOptional max;
 
@@ -1867,7 +1859,9 @@ static bool YGNodeFixedSizeSetMeasuredDimensions(
 }
 
 static void YGZeroOutLayoutRecursivly(const YGNodeRef node) {
-  memset(&(node->getLayout()), 0, sizeof(YGLayout));
+  node->getLayout() = {};
+  node->setLayoutDimension(0, 0);
+  node->setLayoutDimension(0, 1);
   node->setHasNewLayout(true);
   node->cloneChildrenIfNeeded();
   const uint32_t childCount = YGNodeGetChildCount(node);
@@ -1917,7 +1911,7 @@ static float YGNodeCalculateAvailableInnerDim(
   return availableInnerDim;
 }
 
-static void YGNodeComputeFlexBasisForChildren(
+static float YGNodeComputeFlexBasisForChildren(
     const YGNodeRef node,
     const float availableInnerWidth,
     const float availableInnerHeight,
@@ -1926,8 +1920,8 @@ static void YGNodeComputeFlexBasisForChildren(
     YGDirection direction,
     YGFlexDirection mainAxis,
     const YGConfigRef config,
-    bool performLayout,
-    float& totalOuterFlexBasis) {
+    bool performLayout) {
+  float totalOuterFlexBasis = 0.0f;
   YGNodeRef singleFlexChild = nullptr;
   YGVector children = node->getChildren();
   YGMeasureMode measureModeMainDim =
@@ -1997,6 +1991,8 @@ static void YGNodeComputeFlexBasisForChildren(
         child->getLayout().computedFlexBasis +
         child->getMarginForAxis(mainAxis, availableInnerWidth));
   }
+
+  return totalOuterFlexBasis;
 }
 
 // This function assumes that all the children of node have their
@@ -2428,32 +2424,44 @@ static void YGResolveFlexibleLength(
 static void YGJustifyMainAxis(
     const YGNodeRef node,
     YGCollectFlexItemsRowValues& collectedFlexItemsValues,
-    const uint32_t& startOfLineIndex,
-    const YGFlexDirection& mainAxis,
-    const YGFlexDirection& crossAxis,
-    const YGMeasureMode& measureModeMainDim,
-    const YGMeasureMode& measureModeCrossDim,
-    const float& mainAxisownerSize,
-    const float& ownerWidth,
-    const float& availableInnerMainDim,
-    const float& availableInnerCrossDim,
-    const float& availableInnerWidth,
-    const bool& performLayout) {
-  const YGStyle style = node->getStyle();
-
-  // If we are using "at most" rules in the main axis. Calculate the remaining
-  // space when constraint by the min size defined for the main axis.
+    const uint32_t startOfLineIndex,
+    const YGFlexDirection mainAxis,
+    const YGFlexDirection crossAxis,
+    const YGMeasureMode measureModeMainDim,
+    const YGMeasureMode measureModeCrossDim,
+    const float mainAxisownerSize,
+    const float ownerWidth,
+    const float availableInnerMainDim,
+    const float availableInnerCrossDim,
+    const float availableInnerWidth,
+    const bool performLayout) {
+  const YGStyle& style = node->getStyle();
+  const float leadingPaddingAndBorderMain = YGUnwrapFloatOptional(
+      node->getLeadingPaddingAndBorder(mainAxis, ownerWidth));
+  const float trailingPaddingAndBorderMain = YGUnwrapFloatOptional(
+      node->getTrailingPaddingAndBorder(mainAxis, ownerWidth));
+  // If we are using "at most" rules in the main axis, make sure that
+  // remainingFreeSpace is 0 when min main dimension is not given
   if (measureModeMainDim == YGMeasureModeAtMost &&
       collectedFlexItemsValues.remainingFreeSpace > 0) {
     if (style.minDimensions[dim[mainAxis]].unit != YGUnitUndefined &&
         !YGResolveValue(style.minDimensions[dim[mainAxis]], mainAxisownerSize)
              .isUndefined()) {
-      collectedFlexItemsValues.remainingFreeSpace = YGFloatMax(
-          0,
+      // This condition makes sure that if the size of main dimension(after
+      // considering child nodes main dim, leading and trailing padding etc)
+      // falls below min dimension, then the remainingFreeSpace is reassigned
+      // considering the min dimension
+
+      // `minAvailableMainDim` denotes minimum available space in which child
+      // can be laid out, it will exclude space consumed by padding and border.
+      const float minAvailableMainDim =
           YGUnwrapFloatOptional(YGResolveValue(
               style.minDimensions[dim[mainAxis]], mainAxisownerSize)) -
-              (availableInnerMainDim -
-               collectedFlexItemsValues.remainingFreeSpace));
+          leadingPaddingAndBorderMain - trailingPaddingAndBorderMain;
+      const float occupiedSpaceByChildNodes =
+          availableInnerMainDim - collectedFlexItemsValues.remainingFreeSpace;
+      collectedFlexItemsValues.remainingFreeSpace =
+          YGFloatMax(0, minAvailableMainDim - occupiedSpaceByChildNodes);
     } else {
       collectedFlexItemsValues.remainingFreeSpace = 0;
     }
@@ -2515,17 +2523,18 @@ static void YGJustifyMainAxis(
     }
   }
 
-  const float leadingPaddingAndBorderMain = YGUnwrapFloatOptional(
-      node->getLeadingPaddingAndBorder(mainAxis, ownerWidth));
   collectedFlexItemsValues.mainDim =
       leadingPaddingAndBorderMain + leadingMainDim;
   collectedFlexItemsValues.crossDim = 0;
 
+  float maxAscentForCurrentLine = 0;
+  float maxDescentForCurrentLine = 0;
+  bool isNodeBaselineLayout = YGIsBaselineLayout(node);
   for (uint32_t i = startOfLineIndex;
        i < collectedFlexItemsValues.endOfLineIndex;
        i++) {
     const YGNodeRef child = node->getChild(i);
-    const YGStyle childStyle = child->getStyle();
+    const YGStyle& childStyle = child->getStyle();
     const YGLayout childLayout = child->getLayout();
     if (childStyle.display == YGDisplayNone) {
       continue;
@@ -2585,11 +2594,30 @@ static void YGJustifyMainAxis(
           collectedFlexItemsValues.mainDim += betweenMainDim +
               YGNodeDimWithMargin(child, mainAxis, availableInnerWidth);
 
-          // The cross dimension is the max of the elements dimension since
-          // there can only be one element in that cross dimension.
-          collectedFlexItemsValues.crossDim = YGFloatMax(
-              collectedFlexItemsValues.crossDim,
-              YGNodeDimWithMargin(child, crossAxis, availableInnerWidth));
+          if (isNodeBaselineLayout) {
+            // If the child is baseline aligned then the cross dimension is
+            // calculated by adding maxAscent and maxDescent from the baseline.
+            const float ascent = YGBaseline(child) +
+                YGUnwrapFloatOptional(child->getLeadingMargin(
+                    YGFlexDirectionColumn, availableInnerWidth));
+            const float descent =
+                child->getLayout().measuredDimensions[YGDimensionHeight] +
+                YGUnwrapFloatOptional(child->getMarginForAxis(
+                    YGFlexDirectionColumn, availableInnerWidth)) -
+                ascent;
+
+            maxAscentForCurrentLine =
+                YGFloatMax(maxAscentForCurrentLine, ascent);
+            maxDescentForCurrentLine =
+                YGFloatMax(maxDescentForCurrentLine, descent);
+          } else {
+            // The cross dimension is the max of the elements dimension since
+            // there can only be one element in that cross dimension in the case
+            // when the items are not baseline aligned
+            collectedFlexItemsValues.crossDim = YGFloatMax(
+                collectedFlexItemsValues.crossDim,
+                YGNodeDimWithMargin(child, crossAxis, availableInnerWidth));
+          }
         }
       } else if (performLayout) {
         child->setLayoutPosition(
@@ -2599,8 +2627,12 @@ static void YGJustifyMainAxis(
       }
     }
   }
-  collectedFlexItemsValues.mainDim += YGUnwrapFloatOptional(
-      node->getTrailingPaddingAndBorder(mainAxis, ownerWidth));
+  collectedFlexItemsValues.mainDim += trailingPaddingAndBorderMain;
+
+  if (isNodeBaselineLayout) {
+    collectedFlexItemsValues.crossDim =
+        maxAscentForCurrentLine + maxDescentForCurrentLine;
+  }
 }
 
 //
@@ -2872,11 +2904,9 @@ static void YGNodelayoutImpl(
   const float availableInnerCrossDim =
       isMainAxisRow ? availableInnerHeight : availableInnerWidth;
 
-  float totalOuterFlexBasis = 0;
-
   // STEP 3: DETERMINE FLEX BASIS FOR EACH ITEM
 
-  YGNodeComputeFlexBasisForChildren(
+  float totalOuterFlexBasis = YGNodeComputeFlexBasisForChildren(
       node,
       availableInnerWidth,
       availableInnerHeight,
@@ -2885,8 +2915,7 @@ static void YGNodelayoutImpl(
       direction,
       mainAxis,
       config,
-      performLayout,
-      totalOuterFlexBasis);
+      performLayout);
 
   const bool flexBasisOverflows = measureModeMainDim == YGMeasureModeUndefined
       ? false
@@ -3197,47 +3226,46 @@ static void YGNodelayoutImpl(
   }
 
   // STEP 8: MULTI-LINE CONTENT ALIGNMENT
-  if (performLayout && (lineCount > 1 || YGIsBaselineLayout(node)) &&
-      !YGFloatIsUndefined(availableInnerCrossDim)) {
-    const float remainingAlignContentDim =
-        availableInnerCrossDim - totalLineCrossDim;
-
+  // currentLead stores the size of the cross dim
+  if (performLayout && (lineCount > 1 || YGIsBaselineLayout(node))) {
     float crossDimLead = 0;
     float currentLead = leadingPaddingAndBorderCross;
-
-    switch (node->getStyle().alignContent) {
-      case YGAlignFlexEnd:
-        currentLead += remainingAlignContentDim;
-        break;
-      case YGAlignCenter:
-        currentLead += remainingAlignContentDim / 2;
-        break;
-      case YGAlignStretch:
-        if (availableInnerCrossDim > totalLineCrossDim) {
-          crossDimLead = remainingAlignContentDim / lineCount;
-        }
-        break;
-      case YGAlignSpaceAround:
-        if (availableInnerCrossDim > totalLineCrossDim) {
-          currentLead += remainingAlignContentDim / (2 * lineCount);
-          if (lineCount > 1) {
+    if (!YGFloatIsUndefined(availableInnerCrossDim)) {
+      const float remainingAlignContentDim =
+          availableInnerCrossDim - totalLineCrossDim;
+      switch (node->getStyle().alignContent) {
+        case YGAlignFlexEnd:
+          currentLead += remainingAlignContentDim;
+          break;
+        case YGAlignCenter:
+          currentLead += remainingAlignContentDim / 2;
+          break;
+        case YGAlignStretch:
+          if (availableInnerCrossDim > totalLineCrossDim) {
             crossDimLead = remainingAlignContentDim / lineCount;
           }
-        } else {
-          currentLead += remainingAlignContentDim / 2;
-        }
-        break;
-      case YGAlignSpaceBetween:
-        if (availableInnerCrossDim > totalLineCrossDim && lineCount > 1) {
-          crossDimLead = remainingAlignContentDim / (lineCount - 1);
-        }
-        break;
-      case YGAlignAuto:
-      case YGAlignFlexStart:
-      case YGAlignBaseline:
-        break;
+          break;
+        case YGAlignSpaceAround:
+          if (availableInnerCrossDim > totalLineCrossDim) {
+            currentLead += remainingAlignContentDim / (2 * lineCount);
+            if (lineCount > 1) {
+              crossDimLead = remainingAlignContentDim / lineCount;
+            }
+          } else {
+            currentLead += remainingAlignContentDim / 2;
+          }
+          break;
+        case YGAlignSpaceBetween:
+          if (availableInnerCrossDim > totalLineCrossDim && lineCount > 1) {
+            crossDimLead = remainingAlignContentDim / (lineCount - 1);
+          }
+          break;
+        case YGAlignAuto:
+        case YGAlignFlexStart:
+        case YGAlignBaseline:
+          break;
+      }
     }
-
     uint32_t endIndex = 0;
     for (uint32_t i = 0; i < lineCount; i++) {
       const uint32_t startIndex = endIndex;
@@ -3384,7 +3412,6 @@ static void YGNodelayoutImpl(
           }
         }
       }
-
       currentLead += lineHeight;
     }
   }
@@ -3439,7 +3466,6 @@ static void YGNodelayoutImpl(
        measureModeCrossDim == YGMeasureModeAtMost)) {
     // Clamp the size to the min/max size, if specified, and make sure it
     // doesn't go below the padding and border amount.
-
     node->setLayoutMeasuredDimension(
         YGNodeBoundAxis(
             node,
@@ -3522,7 +3548,6 @@ static void YGNodelayoutImpl(
 }
 
 uint32_t gDepth = 0;
-bool gPrintTree = false;
 bool gPrintChanges = false;
 bool gPrintSkips = false;
 
@@ -3592,7 +3617,27 @@ float YGRoundValueToPixelGrid(
     const bool forceCeil,
     const bool forceFloor) {
   float scaledValue = value * pointScaleFactor;
+  // We want to calculate `fractial` such that `floor(scaledValue) = scaledValue
+  // - fractial`.
   float fractial = fmodf(scaledValue, 1.0f);
+  if (fractial < 0) {
+    // This branch is for handling negative numbers for `value`.
+    //
+    // Regarding `floor` and `ceil`. Note that for a number x, `floor(x) <= x <=
+    // ceil(x)` even for negative numbers. Here are a couple of examples:
+    //   - x =  2.2: floor( 2.2) =  2, ceil( 2.2) =  3
+    //   - x = -2.2: floor(-2.2) = -3, ceil(-2.2) = -2
+    //
+    // Regarding `fmodf`. For fractional negative numbers, `fmodf` returns a
+    // negative number. For example, `fmodf(-2.2) = -0.2`. However, we want
+    // `fractial` to be the number such that subtracting it from `value` will
+    // give us `floor(value)`. In the case of negative numbers, adding 1 to
+    // `fmodf(value)` gives us this. Let's continue the example from above:
+    //   - fractial = fmodf(-2.2) = -0.2
+    //   - Add 1 to the fraction: fractial2 = fractial + 1 = -0.2 + 1 = 0.8
+    //   - Finding the `floor`: -2.2 - fractial2 = -2.2 - 0.8 = -3
+    ++fractial;
+  }
   if (YGFloatsEqual(fractial, 0)) {
     // First we check if the value is already rounded
     scaledValue = scaledValue - fractial;
@@ -4098,7 +4143,7 @@ void YGNodeCalculateLayout(
         node->getLayout().direction, ownerWidth, ownerHeight, ownerWidth);
     YGRoundToPixelGrid(node, node->getConfig()->pointScaleFactor, 0.0f, 0.0f);
 
-    if (gPrintTree) {
+    if (node->getConfig()->printTree) {
       YGNodePrint(
           node,
           (YGPrintOptions)(
@@ -4150,7 +4195,7 @@ void YGNodeCalculateLayout(
       node->setLayoutDoesLegacyFlagAffectsLayout(
           !originalNode->isLayoutTreeEqualToNode(*node));
 
-      if (gPrintTree) {
+      if (originalNode->getConfig()->printTree) {
         YGNodePrint(
             originalNode,
             (YGPrintOptions)(
diff --git a/ReactCommon/yoga/yoga/Yoga.h b/ReactCommon/yoga/yoga/Yoga.h
index 838f9d686b4ee6..e17cf7ef43600f 100644
--- a/ReactCommon/yoga/yoga/Yoga.h
+++ b/ReactCommon/yoga/yoga/Yoga.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2014-present, Facebook, Inc.
+ *  Copyright (c) Facebook, Inc. and its affiliates.
  *
  *  This source code is licensed under the MIT license found in the LICENSE
  *  file in the root directory of this source tree.
@@ -45,6 +45,16 @@ typedef struct YGValue {
 extern const YGValue YGValueUndefined;
 extern const YGValue YGValueAuto;
 
+#ifdef __cplusplus
+
+YG_EXTERN_C_END
+
+extern bool operator==(const YGValue& lhs, const YGValue& rhs);
+extern bool operator!=(const YGValue& lhs, const YGValue& rhs);
+
+YG_EXTERN_C_BEGIN
+
+#endif
 
 typedef struct YGConfig* YGConfigRef;
 
@@ -104,6 +114,12 @@ WIN_EXPORT void YGNodeSetChildren(
     const YGNodeRef children[],
     const uint32_t count);
 
+WIN_EXPORT void YGNodeSetIsReferenceBaseline(
+    YGNodeRef node,
+    bool isReferenceBaseline);
+
+WIN_EXPORT bool YGNodeIsReferenceBaseline(YGNodeRef node);
+
 WIN_EXPORT void YGNodeCalculateLayout(
     const YGNodeRef node,
     const float availableWidth,
@@ -147,10 +163,11 @@ WIN_EXPORT void YGNodeCopyStyle(
     const YGNodeRef dstNode,
     const YGNodeRef srcNode);
 
-void* YGNodeGetContext(YGNodeRef node);
-void YGNodeSetContext(YGNodeRef node, void* context);
+WIN_EXPORT void* YGNodeGetContext(YGNodeRef node);
+WIN_EXPORT void YGNodeSetContext(YGNodeRef node, void* context);
+void YGConfigSetPrintTreeFlag(YGConfigRef config, bool enabled);
 YGMeasureFunc YGNodeGetMeasureFunc(YGNodeRef node);
-void YGNodeSetMeasureFunc(YGNodeRef node, YGMeasureFunc measureFunc);
+WIN_EXPORT void YGNodeSetMeasureFunc(YGNodeRef node, YGMeasureFunc measureFunc);
 YGBaselineFunc YGNodeGetBaselineFunc(YGNodeRef node);
 void YGNodeSetBaselineFunc(YGNodeRef node, YGBaselineFunc baselineFunc);
 YGDirtiedFunc YGNodeGetDirtiedFunc(YGNodeRef node);
diff --git a/Releases.md b/Releases.md
index f9bab35ab6fcc7..ce5e162ac0cc95 100644
--- a/Releases.md
+++ b/Releases.md
@@ -6,21 +6,7 @@ This document serves as guide for release coordinators. You can find a list of r
 
 React Native follows a monthly release train. Every month, a new branch created off master enters the Release Candidate phase, and the previous Release Candidate branch is released and considered stable.
 
-
-| Version | RC release          | Stable release   |
-| ------- | ------------------- | ---------------- |
-| 0.38.0  | week of November 7  | November 21      |
-| 0.39.0  | week of November 21 | December 2       |
-| 0.40.0  | 1st of December     | 1st of January   |
-| 0.41.0  | 1st of January      | 1st of February  |
-| 0.42.0  | 1st of February     | 1st of March     |
-|  ...    |       ...           |      ...         |
-| 0.56.0  | 1st of June         | 1st of July      |
-| 0.57.0  | 1st of July         | 1st of August    |
-| 0.58.0  | 1st of August       | 1st of September |
-| ...     | ...                 | ...              |
-
--------------------
+------------------
 
 ## How to cut a new release branch
 
diff --git a/bots/code-analysis-bot.js b/bots/code-analysis-bot.js
deleted file mode 100644
index d39120e53e0605..00000000000000
--- a/bots/code-analysis-bot.js
+++ /dev/null
@@ -1,256 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-'use strict';
-
-if (!process.env.CI_USER) {
-  console.error('Missing CI_USER. Example: facebook');
-  process.exit(1);
-}
-if (!process.env.CI_REPO) {
-  console.error('Missing CI_REPO. Example: react-native');
-  process.exit(1);
-}
-if (!process.env.GITHUB_TOKEN) {
-  console.error(
-    'Missing GITHUB_TOKEN. Example: 5fd88b964fa214c4be2b144dc5af5d486a2f8c1e',
-  );
-  process.exit(1);
-}
-if (!process.env.PULL_REQUEST_NUMBER) {
-  console.error('Missing PULL_REQUEST_NUMBER. Example: 4687');
-  // for master branch don't throw and error
-  process.exit(0);
-}
-
-var GitHubApi = require('github');
-var path = require('path');
-
-var github = new GitHubApi({
-  version: '3.0.0',
-});
-
-github.authenticate({
-  type: 'oauth',
-  token: process.env.GITHUB_TOKEN,
-});
-
-function push(arr, key, value) {
-  if (!arr[key]) {
-    arr[key] = [];
-  }
-  arr[key].push(value);
-}
-
-/**
- * There is unfortunately no standard format to report an error, so we have
- * to write a specific converter for each tool we want to support.
- *
- * Those functions take a json object as input and fill the output with the
- * following format:
- *
- * { [ path: string ]: Array< { message: string, line: number }> }
- *
- * This is an object where the keys are the path of the files and values
- * is an array of objects of the shape message and line.
- */
-var converters = {
-  raw: function(output, input) {
-    for (var key in input) {
-      input[key].forEach(function(message) {
-        push(output, key, message);
-      });
-    }
-  },
-
-  flow: function(output, input) {
-    if (!input || !input.errors) {
-      return;
-    }
-
-    input.errors.forEach(function(error) {
-      push(output, error.message[0].path, {
-        message: error.message.map(message => message.descr).join(' '),
-        line: error.message[0].line,
-      });
-    });
-  },
-
-  eslint: function(output, input) {
-    if (!input) {
-      return;
-    }
-
-    input.forEach(function(file) {
-      file.messages.forEach(function(message) {
-        push(output, file.filePath, {
-          message: message.ruleId + ': ' + message.message,
-          line: message.line,
-        });
-      });
-    });
-  },
-};
-
-function getShaFromPullRequest(user, repo, number, callback) {
-  github.pullRequests.get({user, repo, number}, (error, res) => {
-    if (error) {
-      console.log(error);
-      return;
-    }
-    callback(res.head.sha);
-  });
-}
-
-function getFilesFromCommit(user, repo, sha, callback) {
-  github.repos.getCommit({user, repo, sha}, (error, res) => {
-    if (error) {
-      console.log(error);
-      return;
-    }
-    // A merge commit should not have any new changes to report
-    if (res.parents && res.parents.length > 1) {
-      return;
-    }
-
-    callback(res.files);
-  });
-}
-
-/**
- * Sadly we can't just give the line number to github, we have to give the
- * line number relative to the patch file which is super annoying. This
- * little function builds a map of line number in the file to line number
- * in the patch file
- */
-function getLineMapFromPatch(patchString) {
-  var diffLineIndex = 0;
-  var fileLineIndex = 0;
-  var lineMap = {};
-
-  patchString.split('\n').forEach(line => {
-    if (line.match(/^@@/)) {
-      fileLineIndex = line.match(/\+([0-9]+)/)[1] - 1;
-      return;
-    }
-
-    diffLineIndex++;
-    if (line[0] !== '-') {
-      fileLineIndex++;
-      if (line[0] === '+') {
-        lineMap[fileLineIndex] = diffLineIndex;
-      }
-    }
-  });
-
-  return lineMap;
-}
-
-function sendComment(user, repo, number, sha, filename, lineMap, message) {
-  if (!lineMap[message.line]) {
-    // Do not send messages on lines that did not change
-    return;
-  }
-
-  var opts = {
-    user,
-    repo,
-    number,
-    sha,
-    path: filename,
-    commit_id: sha,
-    body: message.message,
-    position: lineMap[message.line],
-  };
-  github.pullRequests.createComment(opts, function(error, res) {
-    if (error) {
-      console.log(error);
-      return;
-    }
-  });
-  console.log('Sending comment', opts);
-}
-
-function main(messages, user, repo, number) {
-  // No message, we don't need to do anything :)
-  if (Object.keys(messages).length === 0) {
-    return;
-  }
-
-  getShaFromPullRequest(user, repo, number, sha => {
-    getFilesFromCommit(user, repo, sha, files => {
-      files.filter(file => messages[file.filename]).forEach(file => {
-        // github api sometimes does not return a patch on large commits
-        if (!file.patch) {
-          return;
-        }
-        var lineMap = getLineMapFromPatch(file.patch);
-        messages[file.filename].forEach(message => {
-          sendComment(user, repo, number, sha, file.filename, lineMap, message);
-        });
-      });
-    });
-  });
-}
-
-var content = '';
-process.stdin.resume();
-process.stdin.on('data', function(buf) {
-  content += buf.toString();
-});
-process.stdin.on('end', function() {
-  var messages = {};
-
-  // Since we send a few http requests to setup the process, we don't want
-  // to run this file one time per code analysis tool. Instead, we write all
-  // the results in the same stdin stream.
-  // The format of this stream is
-  //
-  //   name-of-the-converter
-  //   {"json":"payload"}
-  //   name-of-the-other-converter
-  //   {"other": ["json", "payload"]}
-  //
-  // In order to generate such stream, here is a sample bash command:
-  //
-  //   cat <(echo eslint; npm run lint --silent -- --format=json; echo flow; flow --json) | node code-analysis-bot.js
-
-  var lines = content.trim().split('\n');
-  for (var i = 0; i < Math.ceil(lines.length / 2); ++i) {
-    var converter = converters[lines[i * 2]];
-    if (!converter) {
-      throw new Error('Unknown converter ' + lines[i * 2]);
-    }
-    var json;
-    try {
-      json = JSON.parse(lines[i * 2 + 1]);
-    } catch (e) {}
-
-    converter(messages, json);
-  }
-
-  // The paths are returned in absolute from code analysis tools but github works
-  // on paths relative from the root of the project. Doing the normalization here.
-  var pwd = path.resolve('.');
-  for (var absolutePath in messages) {
-    var relativePath = path.relative(pwd, absolutePath);
-    if (relativePath === absolutePath) {
-      continue;
-    }
-    messages[relativePath] = messages[absolutePath];
-    delete messages[absolutePath];
-  }
-
-  var user = process.env.CI_USER;
-  var repo = process.env.CI_REPO;
-  var number = process.env.PULL_REQUEST_NUMBER;
-
-  // intentional lint warning to make sure that the bot is working :)
-  main(messages, user, repo, number);
-});
diff --git a/bots/dangerfile.js b/bots/dangerfile.js
index de7c0741634480..9c29f56c7a1f6e 100644
--- a/bots/dangerfile.js
+++ b/bots/dangerfile.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,11 +9,9 @@
 
 'use strict';
 
-const fs = require('fs');
 const includes = require('lodash.includes');
-const minimatch = require('minimatch');
 
-const {danger, fail, markdown, message, warn} = require('danger');
+const {danger, fail, warn} = require('danger');
 
 // Fails if the description is too short.
 if (!danger.github.pr.body || danger.github.pr.body.length < 10) {
@@ -41,7 +39,7 @@ if (!includesTestPlan) {
 }
 
 // Regex looks for given categories, types, a file/framework/component, and a message - broken into 4 capture groups
-const releaseNotesRegex = /\[\s?(ANDROID|CLI|DOCS|GENERAL|INTERNAL|IOS|TVOS|WINDOWS)\s?\]\s*?\[\s?(BREAKING|BUGFIX|ENHANCEMENT|FEATURE|MINOR)\s?\]\s*?\[(.*)\]\s*?\-\s*?(.*)/gi;
+const releaseNotesRegex = /\[\s?(ANDROID|GENERAL|IOS)\s?\]\s*?\[\s?(ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY)\s?\]\s*?\-\s*?(.*)/gi;
 const includesReleaseNotes =
   danger.github.pr.body &&
   danger.github.pr.body.toLowerCase().includes('release notes');
diff --git a/build.gradle b/build.gradle
index fff061180a44de..63461553c40315 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,16 +1,16 @@
-// Copyright (c) 2015-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
 buildscript {
     repositories {
-        jcenter()
         mavenLocal()
         google()
+        jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.4'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath 'de.undercouch:gradle-download-task:3.4.3'
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -28,9 +28,9 @@ def isSDXPlatform() {
 
 allprojects {
     repositories {
-        jcenter()
         mavenLocal()
         google()
+        jcenter()
 
         def androidSdk = System.getenv("ANDROID_SDK")
         maven {
@@ -40,6 +40,6 @@ allprojects {
 }
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '4.4'
+    gradleVersion = '4.7'
     distributionUrl = distributionUrl.replace("bin", "all")
 }
diff --git a/cli.js b/cli.js
index a57a0a686284b4..a78c9994081b13 100644
--- a/cli.js
+++ b/cli.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow-github/metro.js b/flow-github/metro.js
index 03992f6ed83fe9..bb67ab543d5363 100644
--- a/flow-github/metro.js
+++ b/flow-github/metro.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -36,6 +36,10 @@ declare module 'metro/src/DeltaBundler' {
   declare module.exports: any;
 }
 
+declare module 'metro/src/DeltaBundler/types.flow.js' {
+  declare module.exports: any;
+}
+
 declare module 'metro/src/ModuleGraph/types.flow.js' {
   declare module.exports: any;
 }
@@ -63,3 +67,11 @@ declare module 'metro/src/Server' {
 declare module 'metro/src/ModuleGraph/worker/collectDependencies' {
   declare module.exports: any;
 }
+
+declare module 'metro/src/JSTransformer/worker' {
+  declare module.exports: any;
+}
+
+declare module 'metro/src/DeltaBundler/Serializers/plainJSBundle' {
+  declare module.exports: any;
+}
diff --git a/flow/Map.js b/flow/Map.js
index 7b6c095d020320..c8e830529798ff 100644
--- a/flow/Map.js
+++ b/flow/Map.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/Position.js b/flow/Position.js
index 2886fb69edc3e7..b831a3d2097fd1 100644
--- a/flow/Position.js
+++ b/flow/Position.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/Promise.js b/flow/Promise.js
index cde3a9d597d844..85d70bd41bae02 100644
--- a/flow/Promise.js
+++ b/flow/Promise.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/Set.js b/flow/Set.js
index f135bf3bf6ba63..64099c2a6028c3 100644
--- a/flow/Set.js
+++ b/flow/Set.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/Stringish.js b/flow/Stringish.js
index 4ee9120bb186f4..4fbf0e7853260b 100644
--- a/flow/Stringish.js
+++ b/flow/Stringish.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/console.js b/flow/console.js
index 69b2ba7d665a81..4cb3f31f8cfed5 100644
--- a/flow/console.js
+++ b/flow/console.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/create-react-class.js b/flow/create-react-class.js
index c7cf3c84770d11..ae0a19b0f2860e 100644
--- a/flow/create-react-class.js
+++ b/flow/create-react-class.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/flow/fbjs.js b/flow/fbjs.js
index 9106e436da85d8..b1dff5b0ce3d2a 100644
--- a/flow/fbjs.js
+++ b/flow/fbjs.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,3 @@ declare module 'fbjs/lib/invariant' {
     ...args: Array<any>
   ) => void;
 }
-
-declare module 'fbjs/lib/nullthrows' {
-  declare module.exports: <T>(value: ?T) => T;
-}
diff --git a/flow/jest.js b/flow/jest.js
index 336c883836818e..d26ab844ea2007 100644
--- a/flow/jest.js
+++ b/flow/jest.js
@@ -1,23 +1,10 @@
 /**
- * Copyright (c) 2004-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * Modified from https://raw.githubusercontent.com/flowtype/flow-typed/b43dff3e0ed5ccf7033839045f4819e8db40faa9/definitions/npm/jest_v20.x.x/flow_v0.22.x-/jest_v20.x.x.js
- * Duplicated from www/flow/shared/jest.js
- * List of modifications:
- *  - added function fail
- *  - added jest.requireActual
- *  - added jest.requireMock
- *  - added JestMockFn.mockName
- *  - added JestMockFn.mockRejectedValue
- *  - added JestMockFn.mockRejectedValueOnce
- *  - added JestMockFn.mockResolvedValue
- *  - added JestMockFn.mockResolvedValueOnce
- *  - added JestMockFn.mock.thrownErrors
- *  - added JestMockFn.mock.returnValues
- *  - added jest.setTimeout
+ * Copied from https://raw.githubusercontent.com/flow-typed/flow-typed/master/definitions/npm/jest_v23.x.x/flow_v0.39.x-/jest_v23.x.x.js
  * @flow strict
  * @format
  */
@@ -42,10 +29,10 @@ type JestMockFn<TArguments: $ReadOnlyArray<*>, TReturn> = {
      */
     instances: Array<TReturn>,
     /**
-     * An array containing the results of a method, and whether they were
-     * returned or thrown.
+     * An array that contains all the object results that have been
+     * returned by this mock function call
      */
-    results: Array<{isThrown: boolean}>,
+    results: Array<{isThrow: boolean, value: TReturn}>,
   },
   /**
    * Resets all information stored in the mockFn.mock.calls and
@@ -89,33 +76,35 @@ type JestMockFn<TArguments: $ReadOnlyArray<*>, TReturn> = {
    */
   mockName(name: string): JestMockFn<TArguments, TReturn>,
   /**
-   * Sugar for: jest.fn().mockReturnValue(Promise.reject(value));
+   * Just a simple sugar function for returning `this`
    */
-  mockRejectedValue(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockReturnThis(): void,
   /**
-   * Sugar for: jest.fn().mockReturnValueOnce(Promise.reject(value));
+   * Accepts a value that will be returned whenever the mock function is called.
    */
-  mockRejectedValueOnce(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockReturnValue(value: TReturn): JestMockFn<TArguments, TReturn>,
   /**
-   * Sugar for: jest.fn().mockReturnValue(Promise.resolve(value));
+   * Sugar for only returning a value once inside your mock
    */
-  mockResolvedValue(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockReturnValueOnce(value: TReturn): JestMockFn<TArguments, TReturn>,
   /**
-   * Sugar for: jest.fn().mockReturnValueOnce(Promise.resolve(value));
+   * Sugar for jest.fn().mockImplementation(() => Promise.resolve(value))
    */
-  mockResolvedValueOnce(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockResolvedValue(value: TReturn): JestMockFn<TArguments, Promise<TReturn>>,
   /**
-   * Just a simple sugar function for returning `this`
+   * Sugar for jest.fn().mockImplementationOnce(() => Promise.resolve(value))
    */
-  mockReturnThis(): void,
+  mockResolvedValueOnce(
+    value: TReturn,
+  ): JestMockFn<TArguments, Promise<TReturn>>,
   /**
-   * Deprecated: use jest.fn(() => value) instead
+   * Sugar for jest.fn().mockImplementation(() => Promise.reject(value))
    */
-  mockReturnValue(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockRejectedValue(value: TReturn): JestMockFn<TArguments, Promise<any>>,
   /**
-   * Sugar for only returning a value once inside your mock
+   * Sugar for jest.fn().mockImplementationOnce(() => Promise.reject(value))
    */
-  mockReturnValueOnce(value: TReturn): JestMockFn<TArguments, TReturn>,
+  mockRejectedValueOnce(value: TReturn): JestMockFn<TArguments, Promise<any>>,
 };
 
 type JestAsymmetricEqualityType = {
@@ -147,7 +136,10 @@ type JestMatcherResult = {
   pass: boolean,
 };
 
-type JestMatcher = (actual: any, expected: any) => JestMatcherResult;
+type JestMatcher = (
+  actual: any,
+  expected: any,
+) => JestMatcherResult | Promise<JestMatcherResult>;
 
 type JestPromiseType = {
   /**
@@ -162,6 +154,36 @@ type JestPromiseType = {
   resolves: JestExpectType,
 };
 
+/**
+ * Jest allows functions and classes to be used as test names in test() and
+ * describe()
+ */
+type JestTestName = string | Function;
+
+/**
+ *  Plugin: jest-styled-components
+ */
+
+type JestStyledComponentsMatcherValue =
+  | string
+  | JestAsymmetricEqualityType
+  | RegExp
+  | typeof undefined;
+
+type JestStyledComponentsMatcherOptions = {
+  media?: string,
+  modifier?: string,
+  supports?: string,
+};
+
+type JestStyledComponentsMatchersType = {
+  toHaveStyleRule(
+    property: string,
+    value: JestStyledComponentsMatcherValue,
+    options?: JestStyledComponentsMatcherOptions,
+  ): void,
+};
+
 /**
  *  Plugin: jest-enzyme
  */
@@ -169,14 +191,19 @@ type EnzymeMatchersType = {
   toBeChecked(): void,
   toBeDisabled(): void,
   toBeEmpty(): void,
+  toBeEmptyRender(): void,
   toBePresent(): void,
   toContainReact(element: React$Element<any>): void,
+  toExist(): void,
   toHaveClassName(className: string): void,
   toHaveHTML(html: string): void,
-  toHaveProp(propKey: string, propValue?: any): void,
+  toHaveProp: ((propKey: string, propValue?: any) => void) &
+    ((props: Object) => void),
   toHaveRef(refName: string): void,
-  toHaveState(stateKey: string, stateValue?: any): void,
-  toHaveStyle(styleKey: string, styleValue?: any): void,
+  toHaveState: ((stateKey: string, stateValue?: any) => void) &
+    ((state: Object) => void),
+  toHaveStyle: ((styleKey: string, styleValue?: any) => void) &
+    ((style: Object) => void),
   toHaveTagName(tagName: string): void,
   toHaveText(text: string): void,
   toIncludeText(text: string): void,
@@ -185,133 +212,518 @@ type EnzymeMatchersType = {
   toMatchSelector(selector: string): void,
 };
 
-type JestExpectType = {
-  not: JestExpectType & EnzymeMatchersType,
+// DOM testing library extensions https://github.com/kentcdodds/dom-testing-library#custom-jest-matchers
+type DomTestingLibraryType = {
+  toBeInTheDOM(): void,
+  toHaveTextContent(content: string): void,
+  toHaveAttribute(name: string, expectedValue?: string): void,
+};
+
+// Jest JQuery Matchers: https://github.com/unindented/custom-jquery-matchers
+type JestJQueryMatchersType = {
+  toExist(): void,
+  toHaveLength(len: number): void,
+  toHaveId(id: string): void,
+  toHaveClass(className: string): void,
+  toHaveTag(tag: string): void,
+  toHaveAttr(key: string, val?: any): void,
+  toHaveProp(key: string, val?: any): void,
+  toHaveText(text: string | RegExp): void,
+  toHaveData(key: string, val?: any): void,
+  toHaveValue(val: any): void,
+  toHaveCss(css: {[key: string]: any}): void,
+  toBeChecked(): void,
+  toBeDisabled(): void,
+  toBeEmpty(): void,
+  toBeHidden(): void,
+  toBeSelected(): void,
+  toBeVisible(): void,
+  toBeFocused(): void,
+  toBeInDom(): void,
+  toBeMatchedBy(sel: string): void,
+  toHaveDescendant(sel: string): void,
+  toHaveDescendantWithText(sel: string, text: string | RegExp): void,
+};
+
+// Jest Extended Matchers: https://github.com/jest-community/jest-extended
+type JestExtendedMatchersType = {
+  /**
+   * Note: Currently unimplemented
+   * Passing assertion
+   *
+   * @param {String} message
+   */
+  //  pass(message: string): void;
+
+  /**
+   * Note: Currently unimplemented
+   * Failing assertion
+   *
+   * @param {String} message
+   */
+  //  fail(message: string): void;
+
+  /**
+   * Use .toBeEmpty when checking if a String '', Array [] or Object {} is empty.
+   */
+  toBeEmpty(): void,
+
+  /**
+   * Use .toBeOneOf when checking if a value is a member of a given Array.
+   * @param {Array.<*>} members
+   */
+  toBeOneOf(members: any[]): void,
+
+  /**
+   * Use `.toBeNil` when checking a value is `null` or `undefined`.
+   */
+  toBeNil(): void,
+
+  /**
+   * Use `.toSatisfy` when you want to use a custom matcher by supplying a predicate function that returns a `Boolean`.
+   * @param {Function} predicate
+   */
+  toSatisfy(predicate: (n: any) => boolean): void,
+
+  /**
+   * Use `.toBeArray` when checking if a value is an `Array`.
+   */
+  toBeArray(): void,
+
+  /**
+   * Use `.toBeArrayOfSize` when checking if a value is an `Array` of size x.
+   * @param {Number} x
+   */
+  toBeArrayOfSize(x: number): void,
+
+  /**
+   * Use `.toIncludeAllMembers` when checking if an `Array` contains all of the same members of a given set.
+   * @param {Array.<*>} members
+   */
+  toIncludeAllMembers(members: any[]): void,
+
+  /**
+   * Use `.toIncludeAnyMembers` when checking if an `Array` contains any of the members of a given set.
+   * @param {Array.<*>} members
+   */
+  toIncludeAnyMembers(members: any[]): void,
+
+  /**
+   * Use `.toSatisfyAll` when you want to use a custom matcher by supplying a predicate function that returns a `Boolean` for all values in an array.
+   * @param {Function} predicate
+   */
+  toSatisfyAll(predicate: (n: any) => boolean): void,
+
+  /**
+   * Use `.toBeBoolean` when checking if a value is a `Boolean`.
+   */
+  toBeBoolean(): void,
+
+  /**
+   * Use `.toBeTrue` when checking a value is equal (===) to `true`.
+   */
+  toBeTrue(): void,
+
+  /**
+   * Use `.toBeFalse` when checking a value is equal (===) to `false`.
+   */
+  toBeFalse(): void,
+
+  /**
+   * Use .toBeDate when checking if a value is a Date.
+   */
+  toBeDate(): void,
+
+  /**
+   * Use `.toBeFunction` when checking if a value is a `Function`.
+   */
+  toBeFunction(): void,
+
+  /**
+   * Use `.toHaveBeenCalledBefore` when checking if a `Mock` was called before another `Mock`.
+   *
+   * Note: Required Jest version >22
+   * Note: Your mock functions will have to be asynchronous to cause the timestamps inside of Jest to occur in a differentJS event loop, otherwise the mock timestamps will all be the same
+   *
+   * @param {Mock} mock
+   */
+  toHaveBeenCalledBefore(mock: JestMockFn<any, any>): void,
+
+  /**
+   * Use `.toBeNumber` when checking if a value is a `Number`.
+   */
+  toBeNumber(): void,
+
+  /**
+   * Use `.toBeNaN` when checking a value is `NaN`.
+   */
+  toBeNaN(): void,
+
+  /**
+   * Use `.toBeFinite` when checking if a value is a `Number`, not `NaN` or `Infinity`.
+   */
+  toBeFinite(): void,
+
+  /**
+   * Use `.toBePositive` when checking if a value is a positive `Number`.
+   */
+  toBePositive(): void,
+
+  /**
+   * Use `.toBeNegative` when checking if a value is a negative `Number`.
+   */
+  toBeNegative(): void,
+
+  /**
+   * Use `.toBeEven` when checking if a value is an even `Number`.
+   */
+  toBeEven(): void,
+
+  /**
+   * Use `.toBeOdd` when checking if a value is an odd `Number`.
+   */
+  toBeOdd(): void,
+
+  /**
+   * Use `.toBeWithin` when checking if a number is in between the given bounds of: start (inclusive) and end (exclusive).
+   *
+   * @param {Number} start
+   * @param {Number} end
+   */
+  toBeWithin(start: number, end: number): void,
+
+  /**
+   * Use `.toBeObject` when checking if a value is an `Object`.
+   */
+  toBeObject(): void,
+
+  /**
+   * Use `.toContainKey` when checking if an object contains the provided key.
+   *
+   * @param {String} key
+   */
+  toContainKey(key: string): void,
+
+  /**
+   * Use `.toContainKeys` when checking if an object has all of the provided keys.
+   *
+   * @param {Array.<String>} keys
+   */
+  toContainKeys(keys: string[]): void,
+
+  /**
+   * Use `.toContainAllKeys` when checking if an object only contains all of the provided keys.
+   *
+   * @param {Array.<String>} keys
+   */
+  toContainAllKeys(keys: string[]): void,
+
+  /**
+   * Use `.toContainAnyKeys` when checking if an object contains at least one of the provided keys.
+   *
+   * @param {Array.<String>} keys
+   */
+  toContainAnyKeys(keys: string[]): void,
+
+  /**
+   * Use `.toContainValue` when checking if an object contains the provided value.
+   *
+   * @param {*} value
+   */
+  toContainValue(value: any): void,
+
+  /**
+   * Use `.toContainValues` when checking if an object contains all of the provided values.
+   *
+   * @param {Array.<*>} values
+   */
+  toContainValues(values: any[]): void,
+
+  /**
+   * Use `.toContainAllValues` when checking if an object only contains all of the provided values.
+   *
+   * @param {Array.<*>} values
+   */
+  toContainAllValues(values: any[]): void,
+
+  /**
+   * Use `.toContainAnyValues` when checking if an object contains at least one of the provided values.
+   *
+   * @param {Array.<*>} values
+   */
+  toContainAnyValues(values: any[]): void,
+
+  /**
+   * Use `.toContainEntry` when checking if an object contains the provided entry.
+   *
+   * @param {Array.<String, String>} entry
+   */
+  toContainEntry(entry: [string, string]): void,
+
+  /**
+   * Use `.toContainEntries` when checking if an object contains all of the provided entries.
+   *
+   * @param {Array.<Array.<String, String>>} entries
+   */
+  toContainEntries(entries: [string, string][]): void,
+
+  /**
+   * Use `.toContainAllEntries` when checking if an object only contains all of the provided entries.
+   *
+   * @param {Array.<Array.<String, String>>} entries
+   */
+  toContainAllEntries(entries: [string, string][]): void,
+
+  /**
+   * Use `.toContainAnyEntries` when checking if an object contains at least one of the provided entries.
+   *
+   * @param {Array.<Array.<String, String>>} entries
+   */
+  toContainAnyEntries(entries: [string, string][]): void,
+
+  /**
+   * Use `.toBeExtensible` when checking if an object is extensible.
+   */
+  toBeExtensible(): void,
+
+  /**
+   * Use `.toBeFrozen` when checking if an object is frozen.
+   */
+  toBeFrozen(): void,
+
+  /**
+   * Use `.toBeSealed` when checking if an object is sealed.
+   */
+  toBeSealed(): void,
+
+  /**
+   * Use `.toBeString` when checking if a value is a `String`.
+   */
+  toBeString(): void,
+
+  /**
+   * Use `.toEqualCaseInsensitive` when checking if a string is equal (===) to another ignoring the casing of both strings.
+   *
+   * @param {String} string
+   */
+  toEqualCaseInsensitive(string: string): void,
+
+  /**
+   * Use `.toStartWith` when checking if a `String` starts with a given `String` prefix.
+   *
+   * @param {String} prefix
+   */
+  toStartWith(prefix: string): void,
+
+  /**
+   * Use `.toEndWith` when checking if a `String` ends with a given `String` suffix.
+   *
+   * @param {String} suffix
+   */
+  toEndWith(suffix: string): void,
+
+  /**
+   * Use `.toInclude` when checking if a `String` includes the given `String` substring.
+   *
+   * @param {String} substring
+   */
+  toInclude(substring: string): void,
+
+  /**
+   * Use `.toIncludeRepeated` when checking if a `String` includes the given `String` substring the correct number of times.
+   *
+   * @param {String} substring
+   * @param {Number} times
+   */
+  toIncludeRepeated(substring: string, times: number): void,
+
+  /**
+   * Use `.toIncludeMultiple` when checking if a `String` includes all of the given substrings.
+   *
+   * @param {Array.<String>} substring
+   */
+  toIncludeMultiple(substring: string[]): void,
+};
+
+interface JestExpectType {
+  not: JestExpectType &
+    EnzymeMatchersType &
+    DomTestingLibraryType &
+    JestJQueryMatchersType &
+    JestStyledComponentsMatchersType &
+    JestExtendedMatchersType;
   /**
    * If you have a mock function, you can use .lastCalledWith to test what
    * arguments it was last called with.
    */
-  lastCalledWith(...args: Array<any>): void,
+  lastCalledWith(...args: Array<any>): void;
   /**
    * toBe just checks that a value is what you expect. It uses === to check
    * strict equality.
    */
-  toBe(value: any): void,
-  /**
-   * Use .toHaveBeenCalled to ensure that a mock function got called.
-   */
-  toBeCalled(): void,
+  toBe(value: any): void;
   /**
    * Use .toBeCalledWith to ensure that a mock function was called with
    * specific arguments.
    */
-  toBeCalledWith(...args: Array<any>): void,
+  toBeCalledWith(...args: Array<any>): void;
   /**
    * Using exact equality with floating point numbers is a bad idea. Rounding
    * means that intuitive things fail.
    */
-  toBeCloseTo(num: number, delta: any): void,
+  toBeCloseTo(num: number, delta: any): void;
   /**
    * Use .toBeDefined to check that a variable is not undefined.
    */
-  toBeDefined(): void,
+  toBeDefined(): void;
   /**
    * Use .toBeFalsy when you don't care what a value is, you just want to
    * ensure a value is false in a boolean context.
    */
-  toBeFalsy(): void,
+  toBeFalsy(): void;
   /**
    * To compare floating point numbers, you can use toBeGreaterThan.
    */
-  toBeGreaterThan(number: number): void,
+  toBeGreaterThan(number: number): void;
   /**
    * To compare floating point numbers, you can use toBeGreaterThanOrEqual.
    */
-  toBeGreaterThanOrEqual(number: number): void,
+  toBeGreaterThanOrEqual(number: number): void;
   /**
    * To compare floating point numbers, you can use toBeLessThan.
    */
-  toBeLessThan(number: number): void,
+  toBeLessThan(number: number): void;
   /**
    * To compare floating point numbers, you can use toBeLessThanOrEqual.
    */
-  toBeLessThanOrEqual(number: number): void,
+  toBeLessThanOrEqual(number: number): void;
   /**
    * Use .toBeInstanceOf(Class) to check that an object is an instance of a
    * class.
    */
-  toBeInstanceOf(cls: Class<*>): void,
+  toBeInstanceOf(cls: Class<*>): void;
   /**
    * .toBeNull() is the same as .toBe(null) but the error messages are a bit
    * nicer.
    */
-  toBeNull(): void,
+  toBeNull(): void;
   /**
    * Use .toBeTruthy when you don't care what a value is, you just want to
    * ensure a value is true in a boolean context.
    */
-  toBeTruthy(): void,
+  toBeTruthy(): void;
   /**
    * Use .toBeUndefined to check that a variable is undefined.
    */
-  toBeUndefined(): void,
+  toBeUndefined(): void;
   /**
    * Use .toContain when you want to check that an item is in a list. For
    * testing the items in the list, this uses ===, a strict equality check.
    */
-  toContain(item: any): void,
+  toContain(item: any): void;
   /**
    * Use .toContainEqual when you want to check that an item is in a list. For
    * testing the items in the list, this matcher recursively checks the
    * equality of all fields, rather than checking for object identity.
    */
-  toContainEqual(item: any): void,
+  toContainEqual(item: any): void;
   /**
    * Use .toEqual when you want to check that two objects have the same value.
    * This matcher recursively checks the equality of all fields, rather than
    * checking for object identity.
    */
-  toEqual(value: any): void,
+  toEqual(value: any): void;
   /**
    * Use .toHaveBeenCalled to ensure that a mock function got called.
    */
-  toHaveBeenCalled(): void,
+  toHaveBeenCalled(): void;
+  toBeCalled(): void;
   /**
    * Use .toHaveBeenCalledTimes to ensure that a mock function got called exact
    * number of times.
    */
-  toHaveBeenCalledTimes(number: number): void,
+  toHaveBeenCalledTimes(number: number): void;
+  toBeCalledTimes(number: number): void;
+  /**
+   *
+   */
+  toHaveBeenNthCalledWith(nthCall: number, ...args: Array<any>): void;
+  nthCalledWith(nthCall: number, ...args: Array<any>): void;
+  /**
+   *
+   */
+  toHaveReturned(): void;
+  toReturn(): void;
+  /**
+   *
+   */
+  toHaveReturnedTimes(number: number): void;
+  toReturnTimes(number: number): void;
+  /**
+   *
+   */
+  toHaveReturnedWith(value: any): void;
+  toReturnWith(value: any): void;
+  /**
+   *
+   */
+  toHaveLastReturnedWith(value: any): void;
+  lastReturnedWith(value: any): void;
+  /**
+   *
+   */
+  toHaveNthReturnedWith(nthCall: number, value: any): void;
+  nthReturnedWith(nthCall: number, value: any): void;
   /**
    * Use .toHaveBeenCalledWith to ensure that a mock function was called with
    * specific arguments.
    */
-  toHaveBeenCalledWith(...args: Array<any>): void,
+  toHaveBeenCalledWith(...args: Array<any>): void;
+  toBeCalledWith(...args: Array<any>): void;
   /**
    * Use .toHaveBeenLastCalledWith to ensure that a mock function was last called
    * with specific arguments.
    */
-  toHaveBeenLastCalledWith(...args: Array<any>): void,
+  toHaveBeenLastCalledWith(...args: Array<any>): void;
+  lastCalledWith(...args: Array<any>): void;
   /**
    * Check that an object has a .length property and it is set to a certain
    * numeric value.
    */
-  toHaveLength(number: number): void,
+  toHaveLength(number: number): void;
   /**
    *
    */
-  toHaveProperty(propPath: string, value?: any): void,
+  toHaveProperty(propPath: string, value?: any): void;
   /**
    * Use .toMatch to check that a string matches a regular expression or string.
    */
-  toMatch(regexpOrString: RegExp | string): void,
+  toMatch(regexpOrString: RegExp | string): void;
   /**
    * Use .toMatchObject to check that a javascript object matches a subset of the properties of an object.
    */
-  toMatchObject(object: Object): void,
+  toMatchObject(object: Object | Array<Object>): void;
+  /**
+   * Use .toStrictEqual to check that a javascript object matches a subset of the properties of an object.
+   */
+  toStrictEqual(value: any): void;
+  /**
+   * This ensures that an Object matches the most recent snapshot.
+   */
+  toMatchSnapshot(
+    propertyMatchers?: {[key: string]: JestAsymmetricEqualityType},
+    name?: string,
+  ): void;
   /**
-   * This ensures that a React component matches the most recent snapshot.
+   * This ensures that an Object matches the most recent snapshot.
    */
-  toMatchSnapshot(name?: string): void,
+  toMatchSnapshot(name: string): void;
+
+  toMatchInlineSnapshot(snapshot?: string): void;
+  toMatchInlineSnapshot(
+    propertyMatchers?: {[key: string]: JestAsymmetricEqualityType},
+    snapshot?: string,
+  ): void;
   /**
    * Use .toThrow to test that a function throws when it is called.
    * If you want to test that a specific error gets thrown, you can provide an
@@ -320,14 +732,15 @@ type JestExpectType = {
    *
    * Alias: .toThrowError
    */
-  toThrow(message?: string | Error | RegExp): void,
-  toThrowError(message?: string | Error | RegExp): void,
+  toThrow(message?: string | Error | Class<Error> | RegExp): void;
+  toThrowError(message?: string | Error | Class<Error> | RegExp): void;
   /**
    * Use .toThrowErrorMatchingSnapshot to test that a function throws a error
    * matching the most recent snapshot when it is called.
    */
-  toThrowErrorMatchingSnapshot(): void,
-};
+  toThrowErrorMatchingSnapshot(): void;
+  toThrowErrorMatchingInlineSnapshot(snapshot?: string): void;
+}
 
 type JestObjectType = {
   /**
@@ -407,6 +820,16 @@ type JestObjectType = {
     moduleFactory?: any,
     options?: Object,
   ): JestObjectType,
+  /**
+   * Returns the actual module instead of a mock, bypassing all checks on
+   * whether the module should receive a mock implementation or not.
+   */
+  requireActual(moduleName: string): any,
+  /**
+   * Returns a mock module instead of the actual module, bypassing all checks
+   * on whether the module should be required normally or not.
+   */
+  requireMock(moduleName: string): any,
   /**
    * Resets the module registry - the cache of all required modules. This is
    * useful to isolate modules where local state might conflict between tests.
@@ -470,19 +893,16 @@ type JestObjectType = {
    * Creates a mock function similar to jest.fn but also tracks calls to
    * object[methodName].
    */
-  spyOn(object: Object, methodName: string): JestMockFn<any, any>,
+  spyOn(
+    object: Object,
+    methodName: string,
+    accessType?: 'get' | 'set',
+  ): JestMockFn<any, any>,
   /**
    * Set the default timeout interval for tests and before/after hooks in milliseconds.
    * Note: The default timeout interval is 5 seconds if this method is not called.
    */
   setTimeout(timeout: number): JestObjectType,
-
-  // These methods are added separately and not a part of flow-typed OSS
-  // version of this file. They were added in jest@21.0.0.alpha-2 which is not
-  // yet publicly released yet.
-  // TODO T21262347 Add them to OSS version of flow-typed
-  requireActual(module: string): any,
-  requireMock(module: string): any,
 };
 
 type JestSpyType = {
@@ -515,17 +935,29 @@ declare var describe: {
   /**
    * Creates a block that groups together several related tests in one "test suite"
    */
-  (name: string, fn: () => void): void,
+  (name: JestTestName, fn: () => void): void,
 
   /**
    * Only run this describe block
    */
-  only(name: string, fn: () => void): void,
+  only(name: JestTestName, fn: () => void): void,
 
   /**
    * Skip running this describe block
    */
-  skip(name: string, fn: () => void): void,
+  skip(name: JestTestName, fn: () => void): void,
+
+  /**
+   * each runs this test against array of argument arrays per each run
+   *
+   * @param {table} table of Test
+   */
+  each(
+    table: Array<Array<mixed> | mixed>,
+  ): (
+    name: JestTestName,
+    fn?: (...args: Array<any>) => ?Promise<mixed>,
+  ) => void,
 };
 
 /** An individual test unit */
@@ -533,54 +965,83 @@ declare var it: {
   /**
    * An individual test unit
    *
-   * @param {string} Name of Test
+   * @param {JestTestName} Name of Test
    * @param {Function} Test
    * @param {number} Timeout for the test, in milliseconds.
    */
   (
-    name: string,
+    name: JestTestName,
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number,
   ): void,
+  /**
+   * each runs this test against array of argument arrays per each run
+   *
+   * @param {table} table of Test
+   */
+  each(
+    table: Array<Array<mixed> | mixed>,
+  ): (
+    name: JestTestName,
+    fn?: (...args: Array<any>) => ?Promise<mixed>,
+  ) => void,
   /**
    * Only run this test
    *
-   * @param {string} Name of Test
+   * @param {JestTestName} Name of Test
    * @param {Function} Test
    * @param {number} Timeout for the test, in milliseconds.
    */
   only(
-    name: string,
+    name: JestTestName,
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number,
-  ): void,
+  ): {
+    each(
+      table: Array<Array<mixed> | mixed>,
+    ): (
+      name: JestTestName,
+      fn?: (...args: Array<any>) => ?Promise<mixed>,
+    ) => void,
+  },
   /**
    * Skip running this test
    *
-   * @param {string} Name of Test
+   * @param {JestTestName} Name of Test
    * @param {Function} Test
    * @param {number} Timeout for the test, in milliseconds.
    */
   skip(
-    name: string,
+    name: JestTestName,
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number,
   ): void,
   /**
    * Run the test concurrently
    *
-   * @param {string} Name of Test
+   * @param {JestTestName} Name of Test
    * @param {Function} Test
    * @param {number} Timeout for the test, in milliseconds.
    */
   concurrent(
-    name: string,
+    name: JestTestName,
     fn?: (done: () => void) => ?Promise<mixed>,
     timeout?: number,
   ): void,
+  /**
+   * each runs this test against array of argument arrays per each run
+   *
+   * @param {table} table of Test
+   */
+  each(
+    table: Array<Array<mixed> | mixed>,
+  ): (
+    name: JestTestName,
+    fn?: (...args: Array<any>) => ?Promise<mixed>,
+  ) => void,
 };
 declare function fit(
-  name: string,
+  name: JestTestName,
   fn: (done: () => void) => ?Promise<mixed>,
   timeout?: number,
 ): void;
@@ -595,27 +1056,86 @@ declare var xit: typeof it;
 /** A disabled individual test */
 declare var xtest: typeof it;
 
+type JestPrettyFormatColors = {
+  comment: {close: string, open: string},
+  content: {close: string, open: string},
+  prop: {close: string, open: string},
+  tag: {close: string, open: string},
+  value: {close: string, open: string},
+};
+
+type JestPrettyFormatIndent = string => string;
+type JestPrettyFormatRefs = Array<any>;
+type JestPrettyFormatPrint = any => string;
+type JestPrettyFormatStringOrNull = string | null;
+
+type JestPrettyFormatOptions = {|
+  callToJSON: boolean,
+  edgeSpacing: string,
+  escapeRegex: boolean,
+  highlight: boolean,
+  indent: number,
+  maxDepth: number,
+  min: boolean,
+  plugins: JestPrettyFormatPlugins,
+  printFunctionName: boolean,
+  spacing: string,
+  theme: {|
+    comment: string,
+    content: string,
+    prop: string,
+    tag: string,
+    value: string,
+  |},
+|};
+
+type JestPrettyFormatPlugin = {
+  print: (
+    val: any,
+    serialize: JestPrettyFormatPrint,
+    indent: JestPrettyFormatIndent,
+    opts: JestPrettyFormatOptions,
+    colors: JestPrettyFormatColors,
+  ) => string,
+  test: any => boolean,
+};
+
+type JestPrettyFormatPlugins = Array<JestPrettyFormatPlugin>;
+
 /** The expect function is used every time you want to test a value */
 declare var expect: {
   /** The object that you want to make assertions against */
-  (value: any): JestExpectType & JestPromiseType & EnzymeMatchersType,
+  (
+    value: any,
+  ): JestExpectType &
+    JestPromiseType &
+    EnzymeMatchersType &
+    DomTestingLibraryType &
+    JestJQueryMatchersType &
+    JestStyledComponentsMatchersType &
+    JestExtendedMatchersType,
+
   /** Add additional Jasmine matchers to Jest's roster */
   extend(matchers: {[name: string]: JestMatcher}): void,
   /** Add a module that formats application-specific data structures. */
-  addSnapshotSerializer(serializer: (input: Object) => string): void,
+  addSnapshotSerializer(pluginModule: JestPrettyFormatPlugin): void,
   assertions(expectedAssertions: number): void,
   hasAssertions(): void,
   any(value: mixed): JestAsymmetricEqualityType,
-  anything(): void,
-  arrayContaining(value: Array<mixed>): void,
-  objectContaining(value: Object): void,
+  anything(): any,
+  arrayContaining(value: Array<mixed>): Array<mixed>,
+  objectContaining(value: Object): Object,
   /** Matches any received string that contains the exact expected string. */
-  stringContaining(value: string): void,
-  stringMatching(value: string | RegExp): void,
+  stringContaining(value: string): string,
+  stringMatching(value: string | RegExp): string,
+  not: {
+    arrayContaining: (value: $ReadOnlyArray<mixed>) => Array<mixed>,
+    objectContaining: (value: {}) => Object,
+    stringContaining: (value: string) => string,
+    stringMatching: (value: string | RegExp) => string,
+  },
 };
 
-declare function fail(message?: string): void;
-
 // TODO handle return type
 // http://jasmine.github.io/2.4/introduction.html#section-Spies
 declare function spyOn(value: mixed, method: string): Object;
@@ -624,20 +1144,20 @@ declare function spyOn(value: mixed, method: string): Object;
 declare var jest: JestObjectType;
 
 /**
- * The global Jamine object, this is generally not exposed as the public API,
+ * The global Jasmine object, this is generally not exposed as the public API,
  * using features inside here could break in later versions of Jest.
  */
 declare var jasmine: {
   DEFAULT_TIMEOUT_INTERVAL: number,
   any(value: mixed): JestAsymmetricEqualityType,
-  anything(): void,
-  arrayContaining(value: Array<mixed>): void,
+  anything(): any,
+  arrayContaining(value: Array<mixed>): Array<mixed>,
   clock(): JestClockType,
   createSpy(name: string): JestSpyType,
   createSpyObj(
     baseName: string,
     methodNames: Array<string>,
   ): {[methodName: string]: JestSpyType},
-  objectContaining(value: Object): void,
-  stringMatching(value: string): void,
+  objectContaining(value: Object): Object,
+  stringMatching(value: string): string,
 };
diff --git a/flow/prop-types.js b/flow/prop-types.js
index 5236a762c8abc6..b695bcfcff0df0 100644
--- a/flow/prop-types.js
+++ b/flow/prop-types.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/glog/src/base/mutex.h b/glog/src/base/mutex.h
index ced2b9950edc28..2c4022d719ba8d 100644
--- a/glog/src/base/mutex.h
+++ b/glog/src/base/mutex.h
@@ -101,7 +101,7 @@
 
 #ifndef GOOGLE_MUTEX_H_
 #define GOOGLE_MUTEX_H_
-
+ 
 #include "config.h"           // to figure out pthreads support
 
 #if defined(NO_THREADS)
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b6517bb1d16502..e6a30918ef80ee 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/gradlew.bat b/gradlew.bat
index e95643d6a2ca62..1934213b6ddee5 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,3 +1,8 @@
+:: Copyright (c) 2015-present, Facebook, Inc.
+::
+:: This source code is licensed under the MIT license found in the
+:: LICENSE file in the root directory of this source tree.
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
diff --git a/jest/MockNativeMethods.js b/jest/MockNativeMethods.js
index 9b44fc45fec62e..a7c112e3dd9d90 100644
--- a/jest/MockNativeMethods.js
+++ b/jest/MockNativeMethods.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/jest/__tests__/hasteImpl-test.js b/jest/__tests__/hasteImpl-test.js
index ce2718f41eb1a5..9cfb5a7aea67ef 100644
--- a/jest/__tests__/hasteImpl-test.js
+++ b/jest/__tests__/hasteImpl-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,9 +11,23 @@
 'use strict';
 
 const path = require('path');
+const fs = require('fs');
 
 const {getHasteName} = require('../hasteImpl');
 
+// RNPM currently does not support plugins when using Yarn Plug 'n Play
+const testIfNotPnP = fs.existsSync(
+  path.join(
+    __dirname,
+    '../..',
+    'node_modules',
+    'react-native-dummy',
+    'package.json',
+  ),
+)
+  ? test
+  : test.skip;
+
 function getPath(...parts) {
   return path.join(__dirname, '..', '..', ...parts);
 }
@@ -46,6 +60,24 @@ it('returns the correct haste name for a file with a platform suffix', () => {
   }
 });
 
+testIfNotPnP(
+  'returns the correct haste name for a file with an out-of-tree platform suffix',
+  () => {
+    for (const platform of ['dummy']) {
+      expect(
+        getHasteName(
+          getPath(
+            'Libraries',
+            'Components',
+            'AccessibilityInfo',
+            `AccessibilityInfo.${platform}.js`,
+          ),
+        ),
+      ).toEqual('AccessibilityInfo');
+    }
+  },
+);
+
 it('returns the correct haste name for a file with a flow suffix', () => {
   expect(
     getHasteName(
diff --git a/jest/assetFileTransformer.js b/jest/assetFileTransformer.js
index 85f4a7bceb2a7f..cdc477c7d37dbd 100644
--- a/jest/assetFileTransformer.js
+++ b/jest/assetFileTransformer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2017-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/jest/hasteImpl.js b/jest/hasteImpl.js
index 15d5e2ababbb48..806a0d77a42834 100644
--- a/jest/hasteImpl.js
+++ b/jest/hasteImpl.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,7 +13,17 @@
 const path = require('path');
 const findPlugins = require('../local-cli/core/findPlugins');
 
-const plugins = findPlugins([path.resolve(__dirname, '../../../')]);
+const REACT_NATIVE_CI = process.cwd() === path.resolve(__dirname, '..');
+
+let pluginsPath;
+
+if (REACT_NATIVE_CI) {
+  pluginsPath = '..';
+} else {
+  pluginsPath = '../../../';
+}
+
+const plugins = findPlugins([path.resolve(__dirname, pluginsPath)]);
 
 // Detect out-of-tree platforms and add them to the whitelists
 const pluginRoots /*: Array<
diff --git a/jest/mockComponent.js b/jest/mockComponent.js
index fdd89e82d740e9..28e222123961ba 100644
--- a/jest/mockComponent.js
+++ b/jest/mockComponent.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,7 @@
 'use strict';
 
 module.exports = (moduleName, instanceMethods) => {
-  const RealComponent = require.requireActual(moduleName);
+  const RealComponent = jest.requireActual(moduleName);
   const React = require('react');
 
   const SuperClass =
diff --git a/jest/preprocessor.js b/jest/preprocessor.js
index c08d4a3cde7413..86397a6fafc3da 100644
--- a/jest/preprocessor.js
+++ b/jest/preprocessor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -23,7 +23,7 @@ const babelRegisterOnly = require('metro-babel-register');
 const createCacheKeyFunction = require('fbjs-scripts/jest/createCacheKeyFunction');
 const generate = require('@babel/generator').default;
 
-const nodeFiles = RegExp(
+const nodeFiles = new RegExp(
   [
     '/local-cli/',
     '/metro(?:-[^/]*)?/', // metro, metro-core, metro-source-map, metro-etc
@@ -49,14 +49,17 @@ module.exports = {
 
     const {ast} = transformer.transform({
       filename: file,
-      localPath: file,
       options: {
         ast: true, // needed for open source (?) https://github.com/facebook/react-native/commit/f8d6b97140cffe8d18b2558f94570c8d1b410d5c#r28647044
         dev: true,
+        enableBabelRuntime: false,
+        experimentalImportSupport: false,
+        hot: false,
         inlineRequires: true,
         minify: false,
         platform: '',
         projectRoot: '',
+        publicPath: '/assets',
         retainLines: true,
         sourceType: 'unambiguous', // b7 required. detects module vs script mode
       },
diff --git a/jest/renderer.js b/jest/renderer.js
new file mode 100644
index 00000000000000..e54d64d867f6a4
--- /dev/null
+++ b/jest/renderer.js
@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @emails oncall+react_native
+ * @flow
+ */
+
+'use strict';
+
+const React = require('React');
+
+const TestRenderer = require('react-test-renderer');
+const ShallowRenderer = require('react-test-renderer/shallow');
+
+const renderer = new ShallowRenderer();
+
+export const shallow = (Component: React.Element<any>) => {
+  const Wrapper = (): React.Element<any> => Component;
+
+  return renderer.render(<Wrapper />);
+};
+
+export const create = (Component: React.Element<any>) => {
+  return TestRenderer.create(Component);
+};
diff --git a/jest/setup.js b/jest/setup.js
index 491260d931cc83..f58eebe9965a8f 100644
--- a/jest/setup.js
+++ b/jest/setup.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,19 +9,17 @@
 
 'use strict';
 
-const MockNativeMethods = require.requireActual('./MockNativeMethods');
-const mockComponent = require.requireActual('./mockComponent');
+const MockNativeMethods = jest.requireActual('./MockNativeMethods');
+const mockComponent = jest.requireActual('./mockComponent');
 
-require.requireActual('../Libraries/polyfills/babelHelpers.js');
-require.requireActual('../Libraries/polyfills/Object.es7.js');
-require.requireActual('../Libraries/polyfills/error-guard');
+jest.requireActual('../Libraries/polyfills/babelHelpers.js');
+jest.requireActual('../Libraries/polyfills/Object.es7.js');
+jest.requireActual('../Libraries/polyfills/error-guard');
 
 global.__DEV__ = true;
 
-global.Promise = require.requireActual('promise');
-global.regeneratorRuntime = require.requireActual(
-  'regenerator-runtime/runtime',
-);
+global.Promise = jest.requireActual('promise');
+global.regeneratorRuntime = jest.requireActual('regenerator-runtime/runtime');
 
 global.requestAnimationFrame = function(callback) {
   return setTimeout(callback, 0);
@@ -42,12 +40,12 @@ jest
   .mock('TextInput', () => mockComponent('TextInput'))
   .mock('Modal', () => mockComponent('Modal'))
   .mock('View', () => mockComponent('View', MockNativeMethods))
-  .mock('RefreshControl', () => require.requireMock('RefreshControlMock'))
-  .mock('ScrollView', () => require.requireMock('ScrollViewMock'))
+  .mock('RefreshControl', () => jest.requireMock('RefreshControlMock'))
+  .mock('ScrollView', () => jest.requireMock('ScrollViewMock'))
   .mock('ActivityIndicator', () => mockComponent('ActivityIndicator'))
-  .mock('ListView', () => require.requireMock('ListViewMock'))
+  .mock('ListView', () => jest.requireMock('ListViewMock'))
   .mock('ListViewDataSource', () => {
-    const DataSource = require.requireActual('ListViewDataSource');
+    const DataSource = jest.requireActual('ListViewDataSource');
     DataSource.prototype.toJSON = function() {
       function ListViewDataSource(dataBlob) {
         this.items = 0;
@@ -68,9 +66,7 @@ jest
     return DataSource;
   })
   .mock('AnimatedImplementation', () => {
-    const AnimatedImplementation = require.requireActual(
-      'AnimatedImplementation',
-    );
+    const AnimatedImplementation = jest.requireActual('AnimatedImplementation');
     const oldCreate = AnimatedImplementation.createAnimatedComponent;
     AnimatedImplementation.createAnimatedComponent = function(Component) {
       const Wrapped = oldCreate(Component);
@@ -80,7 +76,7 @@ jest
     return AnimatedImplementation;
   })
   .mock('ReactNative', () => {
-    const ReactNative = require.requireActual('ReactNative');
+    const ReactNative = jest.requireActual('ReactNative');
     const NativeMethodsMixin =
       ReactNative.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
         .NativeMethodsMixin;
@@ -92,7 +88,6 @@ jest
   })
   .mock('ensureComponentIsNative', () => () => true);
 
-const mockEmptyObject = {};
 const mockNativeModules = {
   AlertManager: {
     alertWithArgs: jest.fn(),
@@ -254,6 +249,7 @@ const mockNativeModules = {
     createView: jest.fn(),
     dispatchViewManagerCommand: jest.fn(),
     focus: jest.fn(),
+    getViewManagerConfig: jest.fn(),
     setChildren: jest.fn(),
     manageChildren: jest.fn(),
     updateView: jest.fn(),
diff --git a/keystores/BUCK b/keystores/BUCK
index 88e4c31b28d497..a1cea0ff55c4f6 100644
--- a/keystores/BUCK
+++ b/keystores/BUCK
@@ -1,4 +1,6 @@
-keystore(
+load("//tools/build_defs:fb_native_wrapper.bzl", "fb_native")
+
+fb_native.keystore(
     name = "debug",
     properties = "debug.keystore.properties",
     store = "debug.keystore",
diff --git a/lib/InitializeJavaScriptAppEngine.js b/lib/InitializeJavaScriptAppEngine.js
index 266704de7e3778..3bfab280a03506 100644
--- a/lib/InitializeJavaScriptAppEngine.js
+++ b/lib/InitializeJavaScriptAppEngine.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/RCTEventEmitter.js b/lib/RCTEventEmitter.js
index da4996b9ddcdaf..85010174075aa4 100644
--- a/lib/RCTEventEmitter.js
+++ b/lib/RCTEventEmitter.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/TextInputState.js b/lib/TextInputState.js
index e76510adb6db3f..d016523f939b60 100644
--- a/lib/TextInputState.js
+++ b/lib/TextInputState.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/UIManager.js b/lib/UIManager.js
index 56e45cdd91e240..a8140397c7bdbe 100644
--- a/lib/UIManager.js
+++ b/lib/UIManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/UIManagerStatTracker.js b/lib/UIManagerStatTracker.js
index bd5da422215062..2579d1ea10c642 100644
--- a/lib/UIManagerStatTracker.js
+++ b/lib/UIManagerStatTracker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/View.js b/lib/View.js
index 4ff92230f2d978..2eaddd857b6e8f 100644
--- a/lib/View.js
+++ b/lib/View.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/deepDiffer.js b/lib/deepDiffer.js
index c1fd4dd3598289..3d091331852afe 100644
--- a/lib/deepDiffer.js
+++ b/lib/deepDiffer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/deepFreezeAndThrowOnMutationInDev.js b/lib/deepFreezeAndThrowOnMutationInDev.js
index 37583d73d4a039..961a0e1b66615d 100644
--- a/lib/deepFreezeAndThrowOnMutationInDev.js
+++ b/lib/deepFreezeAndThrowOnMutationInDev.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/lib/flattenStyle.js b/lib/flattenStyle.js
index c68ae561c4f6ef..8c4d4ebee10335 100644
--- a/lib/flattenStyle.js
+++ b/lib/flattenStyle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/.npmignore b/local-cli/.npmignore
index e40506d719b298..f6521c7e3f2e85 100644
--- a/local-cli/.npmignore
+++ b/local-cli/.npmignore
@@ -1,2 +1,3 @@
 __fixtures__
 __tests__
+!/templates/HelloWorld/__tests__
diff --git a/local-cli/__mocks__/beeper.js b/local-cli/__mocks__/beeper.js
index 6628a2edc06af5..9fbb40caad1604 100644
--- a/local-cli/__mocks__/beeper.js
+++ b/local-cli/__mocks__/beeper.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/__mocks__/fs.js b/local-cli/__mocks__/fs.js
index 3068c0c4e6d7c5..a3691e3f38bd72 100644
--- a/local-cli/__mocks__/fs.js
+++ b/local-cli/__mocks__/fs.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,18 +9,21 @@
 
 'use strict';
 
-const fs = new (require('metro-memory-fs'))({cwd: process.cwd});
+const path = require('path');
+const MemoryFS = require('metro-memory-fs');
+let fs;
 
-function setMockFilesystem(object) {
-  fs.reset();
-  const root = process.platform === 'win32' ? 'c:\\' : '/';
+function setMockFilesystem(object, platform) {
+  reset(platform);
+  const root = platform === 'win32' ? 'c:\\' : '/';
   mockDir(root, {...object});
+  return root;
 }
 
 function mockDir(dirPath, desc) {
   for (const entName in desc) {
     const ent = desc[entName];
-    const entPath = require('path').join(dirPath, entName);
+    const entPath = path.join(dirPath, entName);
     if (typeof ent === 'string' || ent instanceof Buffer) {
       fs.writeFileSync(entPath, ent);
       continue;
@@ -37,7 +40,22 @@ function mockDir(dirPath, desc) {
   }
 }
 
-fs.__setMockFilesystem = setMockFilesystem;
-fs.mock = {clear: () => fs.reset()};
+function reset(platform) {
+  if (path.mock == null) {
+    throw new Error(
+      'to use this "fs" module mock, you must also mock the "path" module',
+    );
+  }
+  path.mock.reset(platform);
+  const cwd = () => (platform === 'win32' ? 'c:\\' : '/');
+  fs = new MemoryFS({platform, cwd});
+  Object.assign(mockFs, fs);
+}
+
+const mockFs = {};
+mockFs.__setMockFilesystem = setMockFilesystem;
+mockFs.mock = {clear: reset};
+
+reset('posix');
 
-module.exports = fs;
+module.exports = mockFs;
diff --git a/local-cli/__mocks__/path.js b/local-cli/__mocks__/path.js
new file mode 100644
index 00000000000000..813a2525c6bfdf
--- /dev/null
+++ b/local-cli/__mocks__/path.js
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+'use strict';
+
+const mockPath = {};
+
+function reset(platform) {
+  Object.assign(mockPath, jest.requireActual('path')[platform]);
+}
+
+mockPath.mock = {reset};
+
+reset('posix');
+
+module.exports = mockPath;
diff --git a/local-cli/bundle/__mocks__/sign.js b/local-cli/bundle/__mocks__/sign.js
index f8f9174f9b61f0..31fda82f57ca30 100644
--- a/local-cli/bundle/__mocks__/sign.js
+++ b/local-cli/bundle/__mocks__/sign.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/__tests__/filterPlatformAssetScales-test.js b/local-cli/bundle/__tests__/filterPlatformAssetScales-test.js
index 3b6f3b355e0686..ca336d8fdcc70e 100644
--- a/local-cli/bundle/__tests__/filterPlatformAssetScales-test.js
+++ b/local-cli/bundle/__tests__/filterPlatformAssetScales-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/__tests__/getAssetDestPathAndroid-test.js b/local-cli/bundle/__tests__/getAssetDestPathAndroid-test.js
index cca0ce2af61b4c..792e2676ceff1e 100644
--- a/local-cli/bundle/__tests__/getAssetDestPathAndroid-test.js
+++ b/local-cli/bundle/__tests__/getAssetDestPathAndroid-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,6 +14,8 @@ jest.dontMock('../getAssetDestPathAndroid').dontMock('../assetPathUtils');
 
 const getAssetDestPathAndroid = require('../getAssetDestPathAndroid');
 
+const path = require('path');
+
 describe('getAssetDestPathAndroid', () => {
   it('should use the right destination folder', () => {
     const asset = {
@@ -45,7 +47,7 @@ describe('getAssetDestPathAndroid', () => {
     };
 
     expect(getAssetDestPathAndroid(asset, 1)).toBe(
-      'drawable-mdpi/app_test_icon.png',
+      path.normalize('drawable-mdpi/app_test_icon.png'),
     );
   });
 
@@ -66,6 +68,8 @@ describe('getAssetDestPathAndroid', () => {
       httpServerLocation: '/assets/app/test',
     };
 
-    expect(getAssetDestPathAndroid(asset, 1)).toBe('raw/app_test_video.mp4');
+    expect(getAssetDestPathAndroid(asset, 1)).toBe(
+      path.normalize('raw/app_test_video.mp4'),
+    );
   });
 });
diff --git a/local-cli/bundle/__tests__/getAssetDestPathIOS-test.js b/local-cli/bundle/__tests__/getAssetDestPathIOS-test.js
index 620c01571c7501..fb05ba3fb31792 100644
--- a/local-cli/bundle/__tests__/getAssetDestPathIOS-test.js
+++ b/local-cli/bundle/__tests__/getAssetDestPathIOS-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,6 +13,7 @@
 jest.dontMock('../getAssetDestPathIOS');
 
 const getAssetDestPathIOS = require('../getAssetDestPathIOS');
+const path = require('path');
 
 describe('getAssetDestPathIOS', () => {
   it('should build correct path', () => {
@@ -22,7 +23,9 @@ describe('getAssetDestPathIOS', () => {
       httpServerLocation: '/assets/test',
     };
 
-    expect(getAssetDestPathIOS(asset, 1)).toBe('assets/test/icon.png');
+    expect(getAssetDestPathIOS(asset, 1)).toBe(
+      path.normalize('assets/test/icon.png'),
+    );
   });
 
   it('should consider scale', () => {
@@ -32,7 +35,11 @@ describe('getAssetDestPathIOS', () => {
       httpServerLocation: '/assets/test',
     };
 
-    expect(getAssetDestPathIOS(asset, 2)).toBe('assets/test/icon@2x.png');
-    expect(getAssetDestPathIOS(asset, 3)).toBe('assets/test/icon@3x.png');
+    expect(getAssetDestPathIOS(asset, 2)).toBe(
+      path.normalize('assets/test/icon@2x.png'),
+    );
+    expect(getAssetDestPathIOS(asset, 3)).toBe(
+      path.normalize('assets/test/icon@3x.png'),
+    );
   });
 });
diff --git a/local-cli/bundle/assetPathUtils.js b/local-cli/bundle/assetPathUtils.js
index bcfc880ddf637b..9e98ba684a9756 100644
--- a/local-cli/bundle/assetPathUtils.js
+++ b/local-cli/bundle/assetPathUtils.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/buildBundle.js b/local-cli/bundle/buildBundle.js
index 482fce1e634e38..b81b7432951f6b 100644
--- a/local-cli/bundle/buildBundle.js
+++ b/local-cli/bundle/buildBundle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,6 @@
 'use strict';
 
 const log = require('../util/log').out('bundle');
-/* $FlowFixMe(site=react_native_oss) */
 const Server = require('metro/src/Server');
 
 /* $FlowFixMe(site=react_native_oss) */
@@ -32,6 +31,9 @@ async function buildBundle(
     minify: boolean,
   },
   configPromise: Promise<ConfigT>,
+  /* $FlowFixMe(>=0.85.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.85 was deployed. To see the error, delete this comment
+   * and run Flow. */
   output = outputBundle,
 ) {
   // This is used by a bazillion of npm modules we don't control so we don't
diff --git a/local-cli/bundle/bundle.js b/local-cli/bundle/bundle.js
index c6a2b07ac2a11d..8c42982b47b005 100644
--- a/local-cli/bundle/bundle.js
+++ b/local-cli/bundle/bundle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/bundleCommandLineArgs.js b/local-cli/bundle/bundleCommandLineArgs.js
index 81c9cedf619024..fcfce8ccab51ce 100644
--- a/local-cli/bundle/bundleCommandLineArgs.js
+++ b/local-cli/bundle/bundleCommandLineArgs.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/filterPlatformAssetScales.js b/local-cli/bundle/filterPlatformAssetScales.js
index d6a9f78cced7dd..d75512e86886f1 100644
--- a/local-cli/bundle/filterPlatformAssetScales.js
+++ b/local-cli/bundle/filterPlatformAssetScales.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/getAssetDestPathAndroid.js b/local-cli/bundle/getAssetDestPathAndroid.js
index 316b56a4dfbbf8..36e54f94e292ad 100644
--- a/local-cli/bundle/getAssetDestPathAndroid.js
+++ b/local-cli/bundle/getAssetDestPathAndroid.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/getAssetDestPathIOS.js b/local-cli/bundle/getAssetDestPathIOS.js
index 5e6d3a6352fb14..55479c2568c230 100644
--- a/local-cli/bundle/getAssetDestPathIOS.js
+++ b/local-cli/bundle/getAssetDestPathIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/ramBundle.js b/local-cli/bundle/ramBundle.js
index 1d85ba3c4c3292..796389034ff073 100644
--- a/local-cli/bundle/ramBundle.js
+++ b/local-cli/bundle/ramBundle.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,7 +11,7 @@
 
 const bundleWithOutput = require('./bundle').withOutput;
 const bundleCommandLineArgs = require('./bundleCommandLineArgs');
-const outputUnbundle = require('metro/src/shared/output/unbundle');
+const outputUnbundle = require('metro/src/shared/output/RamBundle');
 
 /**
  * Builds the bundle starting to look for dependencies at the given entry path.
diff --git a/local-cli/bundle/saveAssets.js b/local-cli/bundle/saveAssets.js
index 0961ed7d525d00..d43197ec573fb7 100644
--- a/local-cli/bundle/saveAssets.js
+++ b/local-cli/bundle/saveAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/bundle/types.flow.js b/local-cli/bundle/types.flow.js
index 3fb3d930ee1bbb..04bc1c38508bb5 100644
--- a/local-cli/bundle/types.flow.js
+++ b/local-cli/bundle/types.flow.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,5 +10,4 @@
 
 'use strict';
 
-/* $FlowFixMe(site=react_native_oss) */
 export type {OutputOptions, RequestOptions} from 'metro/src/shared/types.flow';
diff --git a/local-cli/bundle/unbundle.js b/local-cli/bundle/unbundle.js
deleted file mode 100644
index dfc7fa2483b1ac..00000000000000
--- a/local-cli/bundle/unbundle.js
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-'use strict';
-
-const bundleCommandLineArgs = require('./bundleCommandLineArgs');
-
-module.exports = {
-  name: 'unbundle',
-  description: 'Deprecated. Renamed to `ram-bundle`.',
-  func: () => {
-    throw new Error(
-      'The `unbundle` command has been renamed `ram-bundle` to better ' +
-        'represent the actual functionality. `ram` mean "Random Access ' +
-        'Module", this particular format of bundle. Functionality remained ' +
-        'unchanged.',
-    );
-  },
-  options: bundleCommandLineArgs.concat({
-    command: '--indexed-unbundle',
-    description: 'Deprecated. Renamed to `--indexed-ram-bundle`.',
-    default: false,
-  }),
-};
diff --git a/local-cli/cli.js b/local-cli/cli.js
index 04f0950052b292..f34d5742915be5 100644
--- a/local-cli/cli.js
+++ b/local-cli/cli.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/cliEntry.js b/local-cli/cliEntry.js
index 6de3fef6039c89..e53356220d9793 100644
--- a/local-cli/cliEntry.js
+++ b/local-cli/cliEntry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -60,7 +60,7 @@ function printHelpInformation() {
   let output = [
     '',
     chalk.bold(chalk.cyan(`  react-native ${cmdName} ${this.usage()}`)),
-    `  ${this._description}`,
+    this._description ? `  ${this._description}` : '',
     '',
     ...sourceInformation,
     `  ${chalk.bold('Options:')}`,
diff --git a/local-cli/commands.js b/local-cli/commands.js
index 2a704aa5d4465f..35a7f74def1fff 100644
--- a/local-cli/commands.js
+++ b/local-cli/commands.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -41,7 +41,6 @@ const documentedCommands = [
   require('./runAndroid/runAndroid'),
   require('./library/library'),
   require('./bundle/bundle'),
-  require('./bundle/unbundle'),
   require('./bundle/ramBundle'),
   require('./eject/eject'),
   require('./link/link'),
diff --git a/local-cli/core/Constants.js b/local-cli/core/Constants.js
index 38d6f22292c4c5..edf9cd51799592 100644
--- a/local-cli/core/Constants.js
+++ b/local-cli/core/Constants.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2016-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/__fixtures__/android.js b/local-cli/core/__fixtures__/android.js
index 2d6447b875651e..d5f603069fc446 100644
--- a/local-cli/core/__fixtures__/android.js
+++ b/local-cli/core/__fixtures__/android.js
@@ -1,7 +1,14 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
-const fs = require.requireActual('fs');
-const path = require('path');
+const fs = jest.requireActual('fs');
+const path = jest.requireActual('path');
 
 const manifest = fs.readFileSync(
   path.join(__dirname, './files/AndroidManifest.xml'),
diff --git a/local-cli/core/__fixtures__/commands.js b/local-cli/core/__fixtures__/commands.js
index 2f98b7ef505f47..5331649a7bd5a2 100644
--- a/local-cli/core/__fixtures__/commands.js
+++ b/local-cli/core/__fixtures__/commands.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 exports.single = {
   func: () => {},
diff --git a/local-cli/core/__fixtures__/dependencies.js b/local-cli/core/__fixtures__/dependencies.js
index decb08a161c228..f5a3c1c333e389 100644
--- a/local-cli/core/__fixtures__/dependencies.js
+++ b/local-cli/core/__fixtures__/dependencies.js
@@ -1,6 +1,13 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
-const fs = require.requireActual('fs');
+const fs = jest.requireActual('fs');
 const path = require('path');
 const android = require('./android');
 
diff --git a/local-cli/core/__fixtures__/files/Main.java b/local-cli/core/__fixtures__/files/Main.java
index 08dc35a58bfabf..5ddddfae8e40ea 100644
--- a/local-cli/core/__fixtures__/files/Main.java
+++ b/local-cli/core/__fixtures__/files/Main.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.some.example;
 
 import java.util.ArrayList;
diff --git a/local-cli/core/__fixtures__/files/ReactPackage.java b/local-cli/core/__fixtures__/files/ReactPackage.java
index 1f65e4f5fb3c5d..08695ebb760816 100644
--- a/local-cli/core/__fixtures__/files/ReactPackage.java
+++ b/local-cli/core/__fixtures__/files/ReactPackage.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.some.example;
 
 import com.facebook.react.ReactPackage;
diff --git a/local-cli/core/__fixtures__/files/ReactPackage.kt b/local-cli/core/__fixtures__/files/ReactPackage.kt
index f17b5b760a3f75..17b0db22bd9187 100644
--- a/local-cli/core/__fixtures__/files/ReactPackage.kt
+++ b/local-cli/core/__fixtures__/files/ReactPackage.kt
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.some.example;
 
 import android.view.View
diff --git a/local-cli/core/__fixtures__/files/package.json b/local-cli/core/__fixtures__/files/package.json
index cce13033d3a405..5c197853c521ae 100644
--- a/local-cli/core/__fixtures__/files/package.json
+++ b/local-cli/core/__fixtures__/files/package.json
@@ -50,7 +50,7 @@
     "react-native": ">=0.4.0 || 0.5.0-rc1 || 0.6.0-rc || 0.7.0-rc || 0.7.0-rc.2 || 0.8.0-rc || 0.8.0-rc.2 || 0.9.0-rc || 0.10.0-rc || 0.11.0-rc || 0.12.0-rc || 0.13.0-rc || 0.14.0-rc || 0.15.0-rc || 0.16.0-rc"
   },
   "dependencies": {
-    "lodash": "^3.8.0",
+    "lodash": "^4.17.10",
     "yargs": "^3.30.0",
     "rnpm-plugin-test": "*"
   },
diff --git a/local-cli/core/__fixtures__/ios.js b/local-cli/core/__fixtures__/ios.js
index 99e84080fbacbb..1792f67309ed25 100644
--- a/local-cli/core/__fixtures__/ios.js
+++ b/local-cli/core/__fixtures__/ios.js
@@ -1,6 +1,13 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
-const fs = require.requireActual('fs');
+const fs = jest.requireActual('fs');
 const path = require('path');
 
 exports.valid = {
diff --git a/local-cli/core/__fixtures__/projects.js b/local-cli/core/__fixtures__/projects.js
index 28414b3d95a33b..c3d42d693ba6eb 100644
--- a/local-cli/core/__fixtures__/projects.js
+++ b/local-cli/core/__fixtures__/projects.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 const android = require('./android');
 const ios = require('./ios');
diff --git a/local-cli/core/__tests__/android/findAndroidAppFolder.spec.js b/local-cli/core/__tests__/android/findAndroidAppFolder.spec.js
index dcbb8002d3c4c9..331dfe8e178c64 100644
--- a/local-cli/core/__tests__/android/findAndroidAppFolder.spec.js
+++ b/local-cli/core/__tests__/android/findAndroidAppFolder.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const fs = require('fs');
diff --git a/local-cli/core/__tests__/android/findManifest.spec.js b/local-cli/core/__tests__/android/findManifest.spec.js
index 73834b61da6780..242b20a7471347 100644
--- a/local-cli/core/__tests__/android/findManifest.spec.js
+++ b/local-cli/core/__tests__/android/findManifest.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findManifest = require('../../android/findManifest');
diff --git a/local-cli/core/__tests__/android/findPackageClassName.spec.js b/local-cli/core/__tests__/android/findPackageClassName.spec.js
index 36da8b4df31dad..5c15fd658bb6e3 100644
--- a/local-cli/core/__tests__/android/findPackageClassName.spec.js
+++ b/local-cli/core/__tests__/android/findPackageClassName.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,40 +10,49 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
+const mocks = require('../../__fixtures__/android');
 const findPackageClassName = require('../../android/findPackageClassName');
 const fs = require('fs');
-const mocks = require('../../__fixtures__/android');
 
-describe('android::findPackageClassName', () => {
-  beforeAll(() => {
-    fs.__setMockFilesystem({
-      empty: {},
-      flatJava: {
-        android: mocks.valid,
-      },
-      flatKotlin: {
-        android: mocks.validKotlin,
-      },
+['posix', 'win32'].forEach(platform => {
+  let root;
+  describe(`android::findPackageClassName (${platform})`, () => {
+    beforeAll(() => {
+      root = fs.__setMockFilesystem(
+        {
+          empty: {},
+          flatJava: {
+            android: mocks.valid,
+          },
+          flatKotlin: {
+            android: mocks.validKotlin,
+          },
+        },
+        platform,
+      );
     });
-  });
 
-  it('returns manifest content if file exists in the folder', () => {
-    expect(typeof findPackageClassName('/flatJava')).toBe('string');
-  });
+    it('returns manifest content if file exists in the folder', () => {
+      expect(typeof findPackageClassName(root + 'flatJava')).toBe('string');
+    });
 
-  it('returns the name of the java class implementing ReactPackage', () => {
-    expect(findPackageClassName('/flatJava')).toBe('SomeExampleJavaPackage');
-  });
+    it('returns the name of the java class implementing ReactPackage', () => {
+      expect(findPackageClassName(root + 'flatJava')).toBe(
+        'SomeExampleJavaPackage',
+      );
+    });
 
-  it('returns the name of the kotlin class implementing ReactPackage', () => {
-    expect(findPackageClassName('/flatKotlin')).toBe(
-      'SomeExampleKotlinPackage',
-    );
-  });
+    it('returns the name of the kotlin class implementing ReactPackage', () => {
+      expect(findPackageClassName(root + 'flatKotlin')).toBe(
+        'SomeExampleKotlinPackage',
+      );
+    });
 
-  it('returns `null` if there are no matches', () => {
-    expect(findPackageClassName('/empty')).toBeNull();
+    it('returns `null` if there are no matches', () => {
+      expect(findPackageClassName(root + 'empty')).toBeNull();
+    });
   });
 });
diff --git a/local-cli/core/__tests__/android/getDependencyConfig.spec.js b/local-cli/core/__tests__/android/getDependencyConfig.spec.js
index 31ae35ad4f49ba..7a43db319c719b 100644
--- a/local-cli/core/__tests__/android/getDependencyConfig.spec.js
+++ b/local-cli/core/__tests__/android/getDependencyConfig.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const getDependencyConfig = require('../../android').dependencyConfig;
diff --git a/local-cli/core/__tests__/android/getProjectConfig.spec.js b/local-cli/core/__tests__/android/getProjectConfig.spec.js
index 594f4d13a326de..863138c9507c7f 100644
--- a/local-cli/core/__tests__/android/getProjectConfig.spec.js
+++ b/local-cli/core/__tests__/android/getProjectConfig.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const getProjectConfig = require('../../android').projectConfig;
diff --git a/local-cli/core/__tests__/android/readManifest.spec.js b/local-cli/core/__tests__/android/readManifest.spec.js
index 8a1dead25f15d7..2b8f41e4f5f8ab 100644
--- a/local-cli/core/__tests__/android/readManifest.spec.js
+++ b/local-cli/core/__tests__/android/readManifest.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findManifest = require('../../android/findManifest');
diff --git a/local-cli/core/__tests__/findAssets.spec.js b/local-cli/core/__tests__/findAssets.spec.js
index 768be38029409f..cf880b23df2901 100644
--- a/local-cli/core/__tests__/findAssets.spec.js
+++ b/local-cli/core/__tests__/findAssets.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findAssets = require('../findAssets');
diff --git a/local-cli/core/__tests__/findPlugins.spec.js b/local-cli/core/__tests__/findPlugins.spec.js
index aba8e95d5da142..6d350da542f7d8 100644
--- a/local-cli/core/__tests__/findPlugins.spec.js
+++ b/local-cli/core/__tests__/findPlugins.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -66,4 +66,19 @@ describe('findPlugins', () => {
     }));
     expect(findPlugins([ROOT]).commands).toHaveLength(1);
   });
+
+  it('returns plugins in scoped modules', () => {
+    jest.mock(pjsonPath, () => ({
+      dependencies: {
+        '@org/rnpm-plugin-test': '*',
+        '@org/react-native-test': '*',
+        '@react-native/test': '*',
+        '@react-native-org/test': '*',
+      },
+    }));
+
+    expect(findPlugins([ROOT])).toHaveProperty('commands');
+    expect(findPlugins([ROOT])).toHaveProperty('platforms');
+    expect(findPlugins([ROOT]).commands[0]).toBe('@org/rnpm-plugin-test');
+  });
 });
diff --git a/local-cli/core/__tests__/ios/findPodfilePath.spec.js b/local-cli/core/__tests__/ios/findPodfilePath.spec.js
index 1ada4b658ed61c..227d2451250765 100644
--- a/local-cli/core/__tests__/ios/findPodfilePath.spec.js
+++ b/local-cli/core/__tests__/ios/findPodfilePath.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findPodfilePath = require('../../ios/findPodfilePath');
diff --git a/local-cli/core/__tests__/ios/findPodspecName.spec.js b/local-cli/core/__tests__/ios/findPodspecName.spec.js
index 7829ab6e34eba0..14d73cd7d82dc2 100644
--- a/local-cli/core/__tests__/ios/findPodspecName.spec.js
+++ b/local-cli/core/__tests__/ios/findPodspecName.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findPodspecName = require('../../ios/findPodspecName');
diff --git a/local-cli/core/__tests__/ios/findProject.spec.js b/local-cli/core/__tests__/ios/findProject.spec.js
index 78b4be1e3a0147..0083e9bd0d7ea6 100644
--- a/local-cli/core/__tests__/ios/findProject.spec.js
+++ b/local-cli/core/__tests__/ios/findProject.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const findProject = require('../../ios/findProject');
diff --git a/local-cli/core/__tests__/ios/getProjectConfig.spec.js b/local-cli/core/__tests__/ios/getProjectConfig.spec.js
index 5d3c72caeef692..d1af61e4b2982f 100644
--- a/local-cli/core/__tests__/ios/getProjectConfig.spec.js
+++ b/local-cli/core/__tests__/ios/getProjectConfig.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,6 +10,7 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 const getProjectConfig = require('../../ios').projectConfig;
diff --git a/local-cli/core/__tests__/makeCommand.spec.js b/local-cli/core/__tests__/makeCommand.spec.js
index 95110375cef10b..c9842efa861622 100644
--- a/local-cli/core/__tests__/makeCommand.spec.js
+++ b/local-cli/core/__tests__/makeCommand.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/android/findAndroidAppFolder.js b/local-cli/core/android/findAndroidAppFolder.js
index 4eb3416d9533a6..41e1319a048ebe 100644
--- a/local-cli/core/android/findAndroidAppFolder.js
+++ b/local-cli/core/android/findAndroidAppFolder.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/android/findManifest.js b/local-cli/core/android/findManifest.js
index 9bacbee4742de4..4c04ed7cba4cf5 100644
--- a/local-cli/core/android/findManifest.js
+++ b/local-cli/core/android/findManifest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/android/findPackageClassName.js b/local-cli/core/android/findPackageClassName.js
index 6fe1d3c359ff2d..a1bfaf6f232d2a 100644
--- a/local-cli/core/android/findPackageClassName.js
+++ b/local-cli/core/android/findPackageClassName.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/android/index.js b/local-cli/core/android/index.js
index f8e5586eb6e867..2106ed7a9a7753 100644
--- a/local-cli/core/android/index.js
+++ b/local-cli/core/android/index.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/android/readManifest.js b/local-cli/core/android/readManifest.js
index 7d61883ca21c32..159cb601d70a59 100644
--- a/local-cli/core/android/readManifest.js
+++ b/local-cli/core/android/readManifest.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/findAssets.js b/local-cli/core/findAssets.js
index db8b2360031f6e..a06596d1016325 100644
--- a/local-cli/core/findAssets.js
+++ b/local-cli/core/findAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/findPlugins.js b/local-cli/core/findPlugins.js
index 52144b82bf6508..7d76b5b6f5f05e 100644
--- a/local-cli/core/findPlugins.js
+++ b/local-cli/core/findPlugins.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/index.js b/local-cli/core/index.js
index 2e66b662bd5299..438dadd55b2216 100644
--- a/local-cli/core/index.js
+++ b/local-cli/core/index.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -131,6 +131,7 @@ async function getCliConfig(): Promise<RNConfig> {
     cliArgs.config != null ? path.resolve(__dirname, cliArgs.config) : null,
   );
 
+  // $FlowFixMe Metro configuration is immutable.
   config.transformer.assetRegistryPath = ASSET_REGISTRY_PATH;
   config.resolver.hasteImplModulePath =
     config.resolver.hasteImplModulePath || defaultConfig.hasteImplModulePath;
@@ -152,7 +153,13 @@ async function getCliConfig(): Promise<RNConfig> {
  */
 function getProjectCommands(): Array<CommandT> {
   const commands = plugins.commands.map(pathToCommands => {
-    const name = pathToCommands.split(path.sep)[0];
+    const name =
+      pathToCommands[0] === '@'
+        ? pathToCommands
+            .split(path.sep)
+            .slice(0, 2)
+            .join(path.sep)
+        : pathToCommands.split(path.sep)[0];
 
     return attachPackage(
       require(path.join(appRoot, 'node_modules', pathToCommands)),
diff --git a/local-cli/core/ios/findPodfilePath.js b/local-cli/core/ios/findPodfilePath.js
index 91efb191d63551..67232535468f5e 100644
--- a/local-cli/core/ios/findPodfilePath.js
+++ b/local-cli/core/ios/findPodfilePath.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 'use strict';
 
diff --git a/local-cli/core/ios/findPodspecName.js b/local-cli/core/ios/findPodspecName.js
index 8f43d4360538db..1041a0a99916f7 100644
--- a/local-cli/core/ios/findPodspecName.js
+++ b/local-cli/core/ios/findPodspecName.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 'use strict';
 
diff --git a/local-cli/core/ios/findProject.js b/local-cli/core/ios/findProject.js
index 3a6547015af295..d98695d67fb370 100644
--- a/local-cli/core/ios/findProject.js
+++ b/local-cli/core/ios/findProject.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/ios/index.js b/local-cli/core/ios/index.js
index f99a270fbc7ea4..df876115046faf 100644
--- a/local-cli/core/ios/index.js
+++ b/local-cli/core/ios/index.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/makeCommand.js b/local-cli/core/makeCommand.js
index 07fe346918ea99..d1d0fe8194f525 100644
--- a/local-cli/core/makeCommand.js
+++ b/local-cli/core/makeCommand.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/core/wrapCommands.js b/local-cli/core/wrapCommands.js
index b5876a69977b0c..1f3ce34ab3f582 100644
--- a/local-cli/core/wrapCommands.js
+++ b/local-cli/core/wrapCommands.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/dependencies/dependencies.js b/local-cli/dependencies/dependencies.js
index aba54ec1363b05..192926a84d1063 100644
--- a/local-cli/dependencies/dependencies.js
+++ b/local-cli/dependencies/dependencies.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/eject/eject.js b/local-cli/eject/eject.js
index 6c18a91fb9b25a..ff7d085be54f43 100644
--- a/local-cli/eject/eject.js
+++ b/local-cli/eject/eject.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/generator/copyProjectTemplateAndReplace.js b/local-cli/generator/copyProjectTemplateAndReplace.js
index ca257b3fd1d5f4..7472fb06287a94 100644
--- a/local-cli/generator/copyProjectTemplateAndReplace.js
+++ b/local-cli/generator/copyProjectTemplateAndReplace.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -74,7 +74,7 @@ function copyProjectTemplateAndReplace(
     }
 
     const relativeFilePath = path.relative(srcPath, absoluteSrcFilePath);
-    const relativeRenamedPath = dotFilePath(relativeFilePath)
+    const relativeRenamedPath = translateFilePath(relativeFilePath)
       .replace(/HelloWorld/g, newProjectName)
       .replace(/helloworld/g, newProjectName.toLowerCase());
 
@@ -118,20 +118,22 @@ function copyProjectTemplateAndReplace(
 }
 
 /**
- * There are various dotfiles in the templates folder in the RN repo. We want
+ * There are various files in the templates folder in the RN repo. We want
  * these to be ignored by tools when working with React Native itself.
  * Example: _babelrc file is ignored by Babel, renamed to .babelrc inside
  *          a real app folder.
  * This is especially important for .gitignore because npm has some special
  * behavior of automatically renaming .gitignore to .npmignore.
  */
-function dotFilePath(path) {
+function translateFilePath(path) {
   if (!path) {
     return path;
   }
   return path
+    .replace('_BUCK', 'BUCK')
     .replace('_gitignore', '.gitignore')
     .replace('_gitattributes', '.gitattributes')
+    .replace('_babel.config.js', 'babel.config.js')
     .replace('_babelrc', '.babelrc')
     .replace('_flowconfig', '.flowconfig')
     .replace('_buckconfig', '.buckconfig')
diff --git a/local-cli/generator/printRunInstructions.js b/local-cli/generator/printRunInstructions.js
index eaa8e5cd8b0b9a..7110f646a7f4b0 100644
--- a/local-cli/generator/printRunInstructions.js
+++ b/local-cli/generator/printRunInstructions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/generator/promptSync.js b/local-cli/generator/promptSync.js
index 636138abf257ef..2388ef0469496a 100644
--- a/local-cli/generator/promptSync.js
+++ b/local-cli/generator/promptSync.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 // Simplified version of:
 // https://github.com/0x00A/prompt-sync/blob/master/index.js
@@ -12,11 +19,7 @@ function create() {
   return prompt;
 
   function prompt(ask, value, opts) {
-    var insert = 0,
-      savedinsert = 0,
-      res,
-      i,
-      savedstr;
+    var insert = 0;
     opts = opts || {};
 
     if (Object(ask) === ask) {
@@ -40,20 +43,15 @@ function create() {
       process.stdin.setRawMode(true);
     }
 
-    var buf = new Buffer(3);
+    var buf = Buffer.alloc(3);
     var str = '',
       character,
       read;
 
-    savedstr = '';
-
     if (ask) {
       process.stdout.write(ask);
     }
 
-    var cycle = 0;
-    var prevComplete;
-
     while (true) {
       read = fs.readSync(fd, buf, 0, 3);
       if (read > 1) {
@@ -64,7 +62,7 @@ function create() {
           insert = str.length;
           process.stdout.write('\u001b[2K\u001b[0G' + ask + str);
           process.stdout.write('\u001b[' + (insert + ask.length + 1) + 'G');
-          buf = new Buffer(3);
+          buf = Buffer.alloc(3);
         }
         continue; // any other 3 character sequence is ignored
       }
@@ -73,7 +71,7 @@ function create() {
       character = buf[read - 1];
 
       // catch a ^C and return null
-      if (character == 3) {
+      if (character === 3) {
         process.stdout.write('^C\n');
         fs.closeSync(fd);
         process.exit(130);
@@ -82,12 +80,15 @@ function create() {
       }
 
       // catch the terminating character
-      if (character == term) {
+      if (character === term) {
         fs.closeSync(fd);
         break;
       }
 
-      if (character == 127 || (process.platform == 'win32' && character == 8)) {
+      if (
+        character === 127 ||
+        (process.platform === 'win32' && character === 8)
+      ) {
         //backspace
         if (!insert) {
           continue;
@@ -112,7 +113,7 @@ function create() {
         );
       } else {
         process.stdout.write('\u001b[s');
-        if (insert == str.length) {
+        if (insert === str.length) {
           process.stdout.write('\u001b[2K\u001b[0G' + ask + str);
         } else {
           if (ask) {
diff --git a/local-cli/generator/templates.js b/local-cli/generator/templates.js
index 195486f56c7660..54a09613b2b0cf 100644
--- a/local-cli/generator/templates.js
+++ b/local-cli/generator/templates.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,45 +14,6 @@ const execSync = require('child_process').execSync;
 const fs = require('fs');
 const path = require('path');
 
-/**
- * Templates released as part of react-native in local-cli/templates.
- */
-const builtInTemplates = {
-  navigation: 'HelloNavigation',
-};
-
-function listTemplatesAndExit(newProjectName, options) {
-  if (options.template === true) {
-    // Just listing templates using 'react-native init --template'.
-    // Not creating a new app.
-    // Print available templates and exit.
-    const templateKeys = Object.keys(builtInTemplates);
-    if (templateKeys.length === 0) {
-      // Just a guard, should never happen as long builtInTemplates
-      // above is defined correctly :)
-      console.log(
-        'There are no templates available besides ' +
-          'the default "Hello World" one.',
-      );
-    } else {
-      console.log(
-        'The available templates are:\n' +
-          templateKeys.join('\n') +
-          '\nYou can use these to create an app based on a template, for example: ' +
-          'you could run: ' +
-          'react-native init ' +
-          newProjectName +
-          ' --template ' +
-          templateKeys[0],
-      );
-    }
-    // Exit 'react-native init'
-    return true;
-  }
-  // Continue 'react-native init'
-  return false;
-}
-
 /**
  * @param destPath Create the new project at this path.
  * @param newProjectName For example 'AwesomeApp'.
@@ -92,41 +53,7 @@ function createProjectFromTemplate(
   // This way we don't have to duplicate the native files in every template.
   // If we duplicated them we'd make RN larger and risk that people would
   // forget to maintain all the copies so they would go out of sync.
-  const builtInTemplateName = builtInTemplates[template];
-  if (builtInTemplateName) {
-    // template is e.g. 'navigation',
-    // use the built-in local-cli/templates/HelloNavigation folder
-    createFromBuiltInTemplate(
-      builtInTemplateName,
-      destPath,
-      newProjectName,
-      yarnVersion,
-    );
-  } else {
-    // template is e.g. 'ignite',
-    // use the template react-native-template-ignite from npm
-    createFromRemoteTemplate(template, destPath, newProjectName, yarnVersion);
-  }
-}
-
-// (We might want to get rid of built-in templates in the future -
-// publish them to npm and install from there.)
-function createFromBuiltInTemplate(
-  templateName,
-  destPath,
-  newProjectName,
-  yarnVersion,
-) {
-  const templatePath = path.resolve(
-    'node_modules',
-    'react-native',
-    'local-cli',
-    'templates',
-    templateName,
-  );
-  copyProjectTemplateAndReplace(templatePath, destPath, newProjectName);
-  installTemplateDependencies(templatePath, yarnVersion);
-  installTemplateDevDependencies(templatePath, yarnVersion);
+  createFromRemoteTemplate(template, destPath, newProjectName, yarnVersion);
 }
 
 /**
@@ -268,6 +195,5 @@ function installTemplateDevDependencies(templatePath, yarnVersion) {
 }
 
 module.exports = {
-  listTemplatesAndExit,
   createProjectFromTemplate,
 };
diff --git a/local-cli/info/info.js b/local-cli/info/info.js
index dc605e0529046e..9f09de587c888b 100644
--- a/local-cli/info/info.js
+++ b/local-cli/info/info.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/init/init.js b/local-cli/init/init.js
index 24446fcee076e5..dec823b52be365 100644
--- a/local-cli/init/init.js
+++ b/local-cli/init/init.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,10 +9,7 @@
 
 'use strict';
 
-const {
-  listTemplatesAndExit,
-  createProjectFromTemplate,
-} = require('../generator/templates');
+const {createProjectFromTemplate} = require('../generator/templates');
 const execSync = require('child_process').execSync;
 const fs = require('fs');
 const minimist = require('minimist');
@@ -44,14 +41,8 @@ function init(projectDir, argsOrName) {
   const newProjectName = args[0];
   const options = minimist(args);
 
-  if (listTemplatesAndExit(newProjectName, options)) {
-    // Just listing templates using 'react-native init --template'
-    // Not creating a new app.
-    return;
-  } else {
-    console.log('Setting up new React Native app in ' + projectDir);
-    generateProject(projectDir, newProjectName, options);
-  }
+  console.log('Setting up new React Native app in ' + projectDir);
+  generateProject(projectDir, newProjectName, options);
 }
 
 /**
@@ -99,7 +90,7 @@ function generateProject(destinationRoot, newProjectName, options) {
     });
   }
   if (!options['skip-jest']) {
-    const jestDeps = `jest babel-jest metro-react-native-babel-preset react-test-renderer@${reactVersion}`;
+    const jestDeps = `jest babel-core@^7.0.0-bridge.0 babel-jest metro-react-native-babel-preset react-test-renderer@${reactVersion}`;
     if (yarnVersion) {
       console.log('Adding Jest...');
       execSync(`yarn add ${jestDeps} --dev --exact`, {stdio: 'inherit'});
diff --git a/local-cli/install/install.js b/local-cli/install/install.js
index 5a0a7afc67ed3d..b15a3e6d50f279 100644
--- a/local-cli/install/install.js
+++ b/local-cli/install/install.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/install/uninstall.js b/local-cli/install/uninstall.js
index 6a71100677dba4..0963962204756a 100644
--- a/local-cli/install/uninstall.js
+++ b/local-cli/install/uninstall.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/library/library.js b/local-cli/library/library.js
index 4dcc81cbfcd906..23a82a1ee204bc 100644
--- a/local-cli/library/library.js
+++ b/local-cli/library/library.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__fixtures__/android/0.17/MainActivity.java b/local-cli/link/__fixtures__/android/0.17/MainActivity.java
index 0a532a7eddfa85..d0794b72b8e783 100644
--- a/local-cli/link/__fixtures__/android/0.17/MainActivity.java
+++ b/local-cli/link/__fixtures__/android/0.17/MainActivity.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.basic;
 
 import android.app.Activity;
diff --git a/local-cli/link/__fixtures__/android/0.17/patchedMainActivity.java b/local-cli/link/__fixtures__/android/0.17/patchedMainActivity.java
index edd841d76211c3..17c2b278d5be7f 100644
--- a/local-cli/link/__fixtures__/android/0.17/patchedMainActivity.java
+++ b/local-cli/link/__fixtures__/android/0.17/patchedMainActivity.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.basic;
 
 import android.app.Activity;
diff --git a/local-cli/link/__fixtures__/android/0.18/MainActivity.java b/local-cli/link/__fixtures__/android/0.18/MainActivity.java
index c2ccca8905f7b6..c630627442cbf2 100644
--- a/local-cli/link/__fixtures__/android/0.18/MainActivity.java
+++ b/local-cli/link/__fixtures__/android/0.18/MainActivity.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.testrn;
 
 import com.facebook.react.ReactActivity;
diff --git a/local-cli/link/__fixtures__/android/0.18/patchedMainActivity.java b/local-cli/link/__fixtures__/android/0.18/patchedMainActivity.java
index 3c6331eaf9fb78..b099735c4185ed 100644
--- a/local-cli/link/__fixtures__/android/0.18/patchedMainActivity.java
+++ b/local-cli/link/__fixtures__/android/0.18/patchedMainActivity.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.testrn;
 
 import com.facebook.react.ReactActivity;
diff --git a/local-cli/link/__fixtures__/android/0.20/MainActivity.java b/local-cli/link/__fixtures__/android/0.20/MainActivity.java
index d9df1311598a37..642f4259c1ee0f 100644
--- a/local-cli/link/__fixtures__/android/0.20/MainActivity.java
+++ b/local-cli/link/__fixtures__/android/0.20/MainActivity.java
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 package com.myawesomeproject;
 
 import com.facebook.react.ReactActivity;
diff --git a/local-cli/link/__fixtures__/android/build.gradle b/local-cli/link/__fixtures__/android/build.gradle
index 70785a4faac7c8..f206d053ecdec2 100644
--- a/local-cli/link/__fixtures__/android/build.gradle
+++ b/local-cli/link/__fixtures__/android/build.gradle
@@ -1,5 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 dependencies {
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:27.1.1"
-    compile "com.facebook.react:react-native:+"
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation "com.facebook.react:react-native:+"
 }
diff --git a/local-cli/link/__fixtures__/android/patchedBuild.gradle b/local-cli/link/__fixtures__/android/patchedBuild.gradle
index 8cade796a256f3..f5cb4a24a8cd14 100644
--- a/local-cli/link/__fixtures__/android/patchedBuild.gradle
+++ b/local-cli/link/__fixtures__/android/patchedBuild.gradle
@@ -1,9 +1,16 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 dependencies {
-    compile project(':test')
-    compile(project(':test2')) {
+    implementation project(':test')
+    implementation(project(':test2')) {
       exclude(group: 'org.unwanted', module: 'test10')
     }
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:27.1.1"
-    compile "com.facebook.react:react-native:+"
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation "com.facebook.react:react-native:+"
 }
diff --git a/local-cli/link/__fixtures__/android/patchedSettings.gradle b/local-cli/link/__fixtures__/android/patchedSettings.gradle
index 8854e3d106fae0..2b311263ad815d 100644
--- a/local-cli/link/__fixtures__/android/patchedSettings.gradle
+++ b/local-cli/link/__fixtures__/android/patchedSettings.gradle
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 rootProject.name = 'TestRN'
 
 include ':app'
diff --git a/local-cli/link/__fixtures__/android/settings.gradle b/local-cli/link/__fixtures__/android/settings.gradle
index ded35f713e9413..5bb3d945cc14ae 100644
--- a/local-cli/link/__fixtures__/android/settings.gradle
+++ b/local-cli/link/__fixtures__/android/settings.gradle
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 rootProject.name = 'TestRN'
 
 include ':app'
diff --git a/local-cli/link/__tests__/android/applyPatch.spec.js b/local-cli/link/__tests__/android/applyPatch.spec.js
index 79b67f68974e94..aea686d084d880 100644
--- a/local-cli/link/__tests__/android/applyPatch.spec.js
+++ b/local-cli/link/__tests__/android/applyPatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/isInstalled.spec.js b/local-cli/link/__tests__/android/isInstalled.spec.js
index a90649f0339f5f..28bc43f11fbb81 100644
--- a/local-cli/link/__tests__/android/isInstalled.spec.js
+++ b/local-cli/link/__tests__/android/isInstalled.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/makeBuildPatch.spec.js b/local-cli/link/__tests__/android/makeBuildPatch.spec.js
index 51873daf1d0236..e630f766434e55 100644
--- a/local-cli/link/__tests__/android/makeBuildPatch.spec.js
+++ b/local-cli/link/__tests__/android/makeBuildPatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -26,12 +26,12 @@ describe('makeBuildPatch', () => {
 
   it('should make a correct patch', () => {
     const {patch} = makeBuildPatch(name);
-    expect(patch).toBe(`    compile project(':${name}')\n`);
+    expect(patch).toBe(`    implementation project(':${name}')\n`);
   });
 
   it('should make a correct install check pattern', () => {
     const {installPattern} = makeBuildPatch(name);
-    const match = `/\\s{4}(compile)(\\(|\\s)(project)\\(\\':${name}\\'\\)(\\)|\\s)/`;
+    const match = `/\\s{4}(implementation)(\\(|\\s)(project)\\(\\':${name}\\'\\)(\\)|\\s)/`;
     expect(installPattern.toString()).toBe(match);
   });
 });
@@ -39,12 +39,14 @@ describe('makeBuildPatch', () => {
 describe('makeBuildPatchWithScopedPackage', () => {
   it('should make a correct patch', () => {
     const {patch} = makeBuildPatch(scopedName);
-    expect(patch).toBe(`    compile project(':${normalizedScopedName}')\n`);
+    expect(patch).toBe(
+      `    implementation project(':${normalizedScopedName}')\n`,
+    );
   });
 
   it('should make a correct install check pattern', () => {
     const {installPattern} = makeBuildPatch(scopedName);
-    const match = `/\\s{4}(compile)(\\(|\\s)(project)\\(\\':${normalizedScopedName}\\'\\)(\\)|\\s)/`;
+    const match = `/\\s{4}(implementation)(\\(|\\s)(project)\\(\\':${normalizedScopedName}\\'\\)(\\)|\\s)/`;
     expect(installPattern.toString()).toBe(match);
   });
 });
diff --git a/local-cli/link/__tests__/android/makeImportPatch.spec.js b/local-cli/link/__tests__/android/makeImportPatch.spec.js
index e00977a09617d4..8a5d32358f1cda 100644
--- a/local-cli/link/__tests__/android/makeImportPatch.spec.js
+++ b/local-cli/link/__tests__/android/makeImportPatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/makePackagePatch.spec.js b/local-cli/link/__tests__/android/makePackagePatch.spec.js
index 48e7a3c30f568e..6dada45081fd8a 100644
--- a/local-cli/link/__tests__/android/makePackagePatch.spec.js
+++ b/local-cli/link/__tests__/android/makePackagePatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/makeSettingsPatch.spec.js b/local-cli/link/__tests__/android/makeSettingsPatch.spec.js
index 80b2be70343509..6df7b0dd969fe3 100644
--- a/local-cli/link/__tests__/android/makeSettingsPatch.spec.js
+++ b/local-cli/link/__tests__/android/makeSettingsPatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/makeStringsPatch.spec.js b/local-cli/link/__tests__/android/makeStringsPatch.spec.js
index f8b6c07ed94639..4ea281640328e1 100644
--- a/local-cli/link/__tests__/android/makeStringsPatch.spec.js
+++ b/local-cli/link/__tests__/android/makeStringsPatch.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/android/normalizeProjectName.spec.js b/local-cli/link/__tests__/android/normalizeProjectName.spec.js
index 2a69e2e09844c5..93f425fd22a812 100644
--- a/local-cli/link/__tests__/android/normalizeProjectName.spec.js
+++ b/local-cli/link/__tests__/android/normalizeProjectName.spec.js
@@ -1,11 +1,9 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * All rights reserved.
- *
  * @format
  * @emails oncall+javascript_foundation
  */
diff --git a/local-cli/link/__tests__/getDependencyConfig.spec.js b/local-cli/link/__tests__/getDependencyConfig.spec.js
index dda764853ee6d2..1e3813d067bd8d 100644
--- a/local-cli/link/__tests__/getDependencyConfig.spec.js
+++ b/local-cli/link/__tests__/getDependencyConfig.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -11,21 +11,22 @@
 'use strict';
 
 const getDependencyConfig = require('../getDependencyConfig');
-const sinon = require('sinon');
 
 describe('getDependencyConfig', () => {
   it("should return an array of dependencies' rnpm config", () => {
     const config = {
-      getDependencyConfig: sinon.stub(),
+      getDependencyConfig: jest.fn(),
     };
 
     expect(Array.isArray(getDependencyConfig(config, ['abcd']))).toBeTruthy();
-    expect(config.getDependencyConfig.callCount).toEqual(1);
+    expect(config.getDependencyConfig.mock.calls.length).toEqual(1);
   });
 
   it('should filter out invalid react-native projects', () => {
     const config = {
-      getDependencyConfig: sinon.stub().throws(new Error('Cannot require')),
+      getDependencyConfig: jest.fn().mockImplementation(() => {
+        throw new Error('Cannot require');
+      }),
     };
 
     expect(getDependencyConfig(config, ['abcd'])).toEqual([]);
diff --git a/local-cli/link/__tests__/getProjectDependencies.spec.js b/local-cli/link/__tests__/getProjectDependencies.spec.js
index 1a2916351a201f..2437e1cee3e4a9 100644
--- a/local-cli/link/__tests__/getProjectDependencies.spec.js
+++ b/local-cli/link/__tests__/getProjectDependencies.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/groupFilesByType.spec.js b/local-cli/link/__tests__/groupFilesByType.spec.js
index d4c4e959886075..173857927aa9e3 100644
--- a/local-cli/link/__tests__/groupFilesByType.spec.js
+++ b/local-cli/link/__tests__/groupFilesByType.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/addFileToProject.spec.js b/local-cli/link/__tests__/ios/addFileToProject.spec.js
index 1b6d3ab6954033..47605e5366ef07 100644
--- a/local-cli/link/__tests__/ios/addFileToProject.spec.js
+++ b/local-cli/link/__tests__/ios/addFileToProject.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/addProjectToLibraries.spec.js b/local-cli/link/__tests__/ios/addProjectToLibraries.spec.js
index 6caac1636a6010..9a921c21787745 100644
--- a/local-cli/link/__tests__/ios/addProjectToLibraries.spec.js
+++ b/local-cli/link/__tests__/ios/addProjectToLibraries.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/addSharedLibraries.spec.js b/local-cli/link/__tests__/ios/addSharedLibraries.spec.js
index 4a645bc3fe32af..c4a262015c0170 100644
--- a/local-cli/link/__tests__/ios/addSharedLibraries.spec.js
+++ b/local-cli/link/__tests__/ios/addSharedLibraries.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/createGroup.spec.js b/local-cli/link/__tests__/ios/createGroup.spec.js
index cee24213f62ddb..6100b92d02a250 100644
--- a/local-cli/link/__tests__/ios/createGroup.spec.js
+++ b/local-cli/link/__tests__/ios/createGroup.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getBuildProperty.spec.js b/local-cli/link/__tests__/ios/getBuildProperty.spec.js
index 991c43dfe8ff0b..ff5c622ebabd3b 100644
--- a/local-cli/link/__tests__/ios/getBuildProperty.spec.js
+++ b/local-cli/link/__tests__/ios/getBuildProperty.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getGroup.spec.js b/local-cli/link/__tests__/ios/getGroup.spec.js
index eb6716af7d43b5..a08434d263cb0e 100644
--- a/local-cli/link/__tests__/ios/getGroup.spec.js
+++ b/local-cli/link/__tests__/ios/getGroup.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getHeaderSearchPath.spec.js b/local-cli/link/__tests__/ios/getHeaderSearchPath.spec.js
index bc1669e59d8406..5518346074d2cc 100644
--- a/local-cli/link/__tests__/ios/getHeaderSearchPath.spec.js
+++ b/local-cli/link/__tests__/ios/getHeaderSearchPath.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getHeadersInFolder.spec.js b/local-cli/link/__tests__/ios/getHeadersInFolder.spec.js
index 1793755d979e8d..d590d6c7360698 100644
--- a/local-cli/link/__tests__/ios/getHeadersInFolder.spec.js
+++ b/local-cli/link/__tests__/ios/getHeadersInFolder.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getPlist.spec.js b/local-cli/link/__tests__/ios/getPlist.spec.js
index 10e1315dd98f22..f229af7a4e34e7 100644
--- a/local-cli/link/__tests__/ios/getPlist.spec.js
+++ b/local-cli/link/__tests__/ios/getPlist.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/getPlistPath.spec.js b/local-cli/link/__tests__/ios/getPlistPath.spec.js
index 9cbce096ea13c2..ae2de5914f18f4 100644
--- a/local-cli/link/__tests__/ios/getPlistPath.spec.js
+++ b/local-cli/link/__tests__/ios/getPlistPath.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -25,6 +25,6 @@ describe('ios::getPlistPath', () => {
 
   it('should return path without Xcode $(SRCROOT)', () => {
     const plistPath = getPlistPath(project, '/');
-    expect(plistPath).toBe('/Basic/Info.plist');
+    expect(plistPath).toBe(path.normalize('/Basic/Info.plist'));
   });
 });
diff --git a/local-cli/link/__tests__/ios/getProducts.spec.js b/local-cli/link/__tests__/ios/getProducts.spec.js
deleted file mode 100644
index 88c7515d7678b6..00000000000000
--- a/local-cli/link/__tests__/ios/getProducts.spec.js
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @emails oncall+javascript_foundation
- */
-
-'use strict';
-
-const xcode = require('xcode');
-const getProducts = require('../../ios/getProducts');
-const path = require('path');
-
-const project = xcode.project(
-  path.join(__dirname, '../../__fixtures__/project.pbxproj'),
-);
-
-describe('ios::getProducts', () => {
-  beforeEach(() => {
-    project.parseSync();
-  });
-
-  it('should return an array of static libraries project exports', () => {
-    const products = getProducts(project);
-    expect(products.length).toBe(1);
-    expect(products).toContain('libRCTActionSheet.a');
-  });
-});
diff --git a/local-cli/link/__tests__/ios/getTargets.spec.js b/local-cli/link/__tests__/ios/getTargets.spec.js
index 7acf9df43ed6f0..0f1142b5efae4b 100644
--- a/local-cli/link/__tests__/ios/getTargets.spec.js
+++ b/local-cli/link/__tests__/ios/getTargets.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/hasLibraryImported.spec.js b/local-cli/link/__tests__/ios/hasLibraryImported.spec.js
index a74e7b59388c4c..b36fbd78d6c3dc 100644
--- a/local-cli/link/__tests__/ios/hasLibraryImported.spec.js
+++ b/local-cli/link/__tests__/ios/hasLibraryImported.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/isInstalled.spec.js b/local-cli/link/__tests__/ios/isInstalled.spec.js
index 3946677c35385e..5998c2e5184cbd 100644
--- a/local-cli/link/__tests__/ios/isInstalled.spec.js
+++ b/local-cli/link/__tests__/ios/isInstalled.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/mapHeaderSearchPaths.spec.js b/local-cli/link/__tests__/ios/mapHeaderSearchPaths.spec.js
index 785e6bdd73f364..0be5740c2c9ac4 100644
--- a/local-cli/link/__tests__/ios/mapHeaderSearchPaths.spec.js
+++ b/local-cli/link/__tests__/ios/mapHeaderSearchPaths.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/removeProjectFromLibraries.js b/local-cli/link/__tests__/ios/removeProjectFromLibraries.js
index 2c882be27d572c..1abf072a1ff958 100644
--- a/local-cli/link/__tests__/ios/removeProjectFromLibraries.js
+++ b/local-cli/link/__tests__/ios/removeProjectFromLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/removeProjectFromProject.spec.js b/local-cli/link/__tests__/ios/removeProjectFromProject.spec.js
index 16dc3b374e4998..257e9f0e7fd565 100644
--- a/local-cli/link/__tests__/ios/removeProjectFromProject.spec.js
+++ b/local-cli/link/__tests__/ios/removeProjectFromProject.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/removeSharedLibrary.spec.js b/local-cli/link/__tests__/ios/removeSharedLibrary.spec.js
index ee69b5c6adfcbc..5f983e551e08b4 100644
--- a/local-cli/link/__tests__/ios/removeSharedLibrary.spec.js
+++ b/local-cli/link/__tests__/ios/removeSharedLibrary.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/ios/writePlist.spec.js b/local-cli/link/__tests__/ios/writePlist.spec.js
index 40a7e549255b53..d4008a96626f83 100644
--- a/local-cli/link/__tests__/ios/writePlist.spec.js
+++ b/local-cli/link/__tests__/ios/writePlist.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,20 +10,24 @@
 
 'use strict';
 
+jest.mock('path');
 jest.mock('fs');
 
 let plistPath = null;
 jest.mock('../../ios/getPlistPath', () => () => plistPath);
 
-const {readFileSync} = require.requireActual('fs');
+const {readFileSync} = jest.requireActual('fs');
 const fs = require('fs');
 
 const xcode = require('xcode');
-const path = require('path');
 const writePlist = require('../../ios/writePlist');
 
-const projectPath = path.join(__dirname, '../../__fixtures__/project.pbxproj');
-const infoPlistPath = path.join(__dirname, '../../__fixtures__/Info.plist');
+const realPath = jest.requireActual('path');
+const projectPath = realPath.join(
+  __dirname,
+  '../../__fixtures__/project.pbxproj',
+);
+const infoPlistPath = realPath.join(__dirname, '../../__fixtures__/Info.plist');
 
 fs.readFileSync = jest.fn(() => readFileSync(projectPath).toString());
 
@@ -45,7 +49,7 @@ describe('ios::writePlist', () => {
 
   it('should write a `.plist` file', () => {
     plistPath = '/Basic/Info.plist';
-    const result = writePlist(project, '/', plist);
+    writePlist(project, '/', plist);
     const infoPlist = readFileSync(infoPlistPath).toString();
     expect(fs.writeFileSync).toHaveBeenCalledWith(plistPath, infoPlist);
   });
diff --git a/local-cli/link/__tests__/link.spec.js b/local-cli/link/__tests__/link.spec.js
index b44bf22b1eb153..5cde6ab7c2c911 100644
--- a/local-cli/link/__tests__/link.spec.js
+++ b/local-cli/link/__tests__/link.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,10 +10,8 @@
 
 'use strict';
 
-const sinon = require('sinon');
 const log = require('npmlog');
-const path = require('path');
-jest.setMock('chalk', {grey: str => str});
+jest.setMock('chalk', { grey: str => str });
 
 describe('link', () => {
   beforeEach(() => {
@@ -35,76 +33,80 @@ describe('link', () => {
 
   it('should accept a name of a dependency to link', done => {
     const config = {
-      getPlatformConfig: () => ({ios: {}, android: {}}),
-      getProjectConfig: () => ({assets: []}),
-      getDependencyConfig: sinon.stub().returns({assets: [], commands: {}}),
+      getPlatformConfig: () => ({ ios: {}, android: {} }),
+      getProjectConfig: () => ({ assets: [] }),
+      getDependencyConfig: jest
+        .fn()
+        .mockReturnValue({ assets: [], commands: {} }),
     };
 
     const link = require('../link').func;
     link(['react-native-gradient'], config).then(() => {
-      expect(
-        config.getDependencyConfig.calledWith('react-native-gradient'),
-      ).toBeTruthy();
+      expect(config.getDependencyConfig.mock.calls[0]).toEqual([
+        'react-native-gradient',
+      ]);
       done();
     });
   });
 
   it('should accept the name of a dependency with a scope / tag', async () => {
     const config = {
-      getPlatformConfig: () => ({ios: {}, android: {}}),
-      getProjectConfig: () => ({assets: []}),
-      getDependencyConfig: sinon.stub().returns({assets: [], commands: {}}),
+      getPlatformConfig: () => ({ ios: {}, android: {} }),
+      getProjectConfig: () => ({ assets: [] }),
+      getDependencyConfig: jest
+        .fn()
+        .mockReturnValue({ assets: [], commands: {} }),
     };
 
     const link = require('../link').func;
     await link(['@scope/something@latest'], config);
-    expect(
-      config.getDependencyConfig.calledWith('@scope/something'),
-    ).toBeTruthy();
+    expect(config.getDependencyConfig.mock.calls[0]).toEqual([
+      '@scope/something',
+    ]);
   });
 
   it('should register native module when android/ios projects are present', done => {
-    const registerNativeModule = sinon.stub();
-    const dependencyConfig = {android: {}, ios: {}, assets: [], commands: {}};
+    const registerNativeModule = jest.fn();
+    const dependencyConfig = { android: {}, ios: {}, assets: [], commands: {} };
     const androidLinkConfig = require('../android');
     const iosLinkConfig = require('../ios');
     const config = {
       getPlatformConfig: () => ({
-        ios: {linkConfig: iosLinkConfig},
-        android: {linkConfig: androidLinkConfig},
+        ios: { linkConfig: iosLinkConfig },
+        android: { linkConfig: androidLinkConfig },
       }),
-      getProjectConfig: () => ({android: {}, ios: {}, assets: []}),
-      getDependencyConfig: sinon.stub().returns(dependencyConfig),
+      getProjectConfig: () => ({ android: {}, ios: {}, assets: [] }),
+      getDependencyConfig: jest.fn().mockReturnValue(dependencyConfig),
     };
 
-    jest.setMock('../android/isInstalled.js', sinon.stub().returns(false));
+    jest.setMock('../android/isInstalled.js', jest.fn().mockReturnValue(false));
 
     jest.setMock('../android/registerNativeModule.js', registerNativeModule);
 
-    jest.setMock('../ios/isInstalled.js', sinon.stub().returns(false));
+    jest.setMock('../ios/isInstalled.js', jest.fn().mockReturnValue(false));
 
     jest.setMock('../ios/registerNativeModule.js', registerNativeModule);
 
     const link = require('../link').func;
 
     link(['react-native-blur'], config).then(() => {
-      expect(registerNativeModule.calledTwice).toBeTruthy();
+      expect(registerNativeModule.mock.calls.length).toBe(2);
       done();
     });
   });
 
   it('should not register modules when they are already installed', done => {
-    const registerNativeModule = sinon.stub();
-    const dependencyConfig = {ios: {}, android: {}, assets: [], commands: {}};
+    const registerNativeModule = jest.fn();
+    const dependencyConfig = { ios: {}, android: {}, assets: [], commands: {} };
     const config = {
-      getPlatformConfig: () => ({ios: {}, android: {}}),
-      getProjectConfig: () => ({ios: {}, android: {}, assets: []}),
-      getDependencyConfig: sinon.stub().returns(dependencyConfig),
+      getPlatformConfig: () => ({ ios: {}, android: {} }),
+      getProjectConfig: () => ({ ios: {}, android: {}, assets: [] }),
+      getDependencyConfig: jest.fn().mockReturnValue(dependencyConfig),
     };
 
-    jest.setMock('../ios/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../ios/isInstalled.js', jest.fn().mockReturnValue(true));
 
-    jest.setMock('../android/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../android/isInstalled.js', jest.fn().mockReturnValue(true));
 
     jest.setMock('../ios/registerNativeModule.js', registerNativeModule);
 
@@ -113,13 +115,13 @@ describe('link', () => {
     const link = require('../link').func;
 
     link(['react-native-blur'], config).then(() => {
-      expect(registerNativeModule.callCount).toEqual(0);
+      expect(registerNativeModule.mock.calls.length).toEqual(0);
       done();
     });
   });
 
   it('should register native modules for plugins', done => {
-    const registerNativeModule = sinon.stub();
+    const registerNativeModule = jest.fn();
     const dependencyConfig = {
       ios: {},
       android: {},
@@ -135,26 +137,26 @@ describe('link', () => {
       getPlatformConfig: () => ({
         ios: {},
         android: {},
-        test: {linkConfig: () => linkPluginConfig},
+        test: { linkConfig: () => linkPluginConfig },
       }),
-      getProjectConfig: () => ({ios: {}, android: {}, test: {}, assets: []}),
-      getDependencyConfig: sinon.stub().returns(dependencyConfig),
+      getProjectConfig: () => ({ ios: {}, android: {}, test: {}, assets: [] }),
+      getDependencyConfig: jest.fn().mockReturnValue(dependencyConfig),
     };
 
-    jest.setMock('../ios/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../ios/isInstalled.js', jest.fn().mockReturnValue(true));
 
-    jest.setMock('../android/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../android/isInstalled.js', jest.fn().mockReturnValue(true));
 
     const link = require('../link').func;
 
     link(['react-native-blur'], config).then(() => {
-      expect(registerNativeModule.calledOnce).toBeTruthy();
+      expect(registerNativeModule.mock.calls.length).toBe(1);
       done();
     });
   });
 
   it('should not register native modules for plugins when already installed', done => {
-    const registerNativeModule = sinon.stub();
+    const registerNativeModule = jest.fn();
     const dependencyConfig = {
       ios: {},
       android: {},
@@ -170,73 +172,75 @@ describe('link', () => {
       getPlatformConfig: () => ({
         ios: {},
         android: {},
-        test: {linkConfig: () => linkPluginConfig},
+        test: { linkConfig: () => linkPluginConfig },
       }),
-      getProjectConfig: () => ({ios: {}, android: {}, test: {}, assets: []}),
-      getDependencyConfig: sinon.stub().returns(dependencyConfig),
+      getProjectConfig: () => ({ ios: {}, android: {}, test: {}, assets: [] }),
+      getDependencyConfig: jest.fn().mockReturnValue(dependencyConfig),
     };
 
-    jest.setMock('../ios/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../ios/isInstalled.js', jest.fn().mockReturnValue(true));
 
-    jest.setMock('../android/isInstalled.js', sinon.stub().returns(true));
+    jest.setMock('../android/isInstalled.js', jest.fn().mockReturnValue(true));
 
     const link = require('../link').func;
 
     link(['react-native-blur'], config).then(() => {
-      expect(registerNativeModule.callCount).toEqual(0);
+      expect(registerNativeModule.mock.calls.length).toEqual(0);
       done();
     });
   });
 
-  it('should run prelink and postlink commands at the appropriate times', done => {
-    const registerNativeModule = sinon.stub();
-    const prelink = sinon.stub().yieldsAsync();
-    const postlink = sinon.stub().yieldsAsync();
+  it('should run prelink and postlink commands at the appropriate times', async () => {
+    const registerNativeModule = jest.fn();
+    const prelink = jest.fn().mockImplementation(cb => cb());
+    const postlink = jest.fn().mockImplementation(cb => cb());
 
     jest.setMock('../ios/registerNativeModule.js', registerNativeModule);
 
-    jest.setMock('../ios/isInstalled.js', sinon.stub().returns(false));
+    jest.setMock('../ios/isInstalled.js', jest.fn().mockReturnValue(false));
 
     const linkConfig = require('../ios');
     const config = {
-      getPlatformConfig: () => ({ios: {linkConfig: linkConfig}}),
-      getProjectConfig: () => ({ios: {}, assets: []}),
-      getDependencyConfig: sinon.stub().returns({
+      getPlatformConfig: () => ({ ios: { linkConfig: linkConfig } }),
+      getProjectConfig: () => ({ ios: {}, assets: [] }),
+      getDependencyConfig: jest.fn().mockReturnValue({
         ios: {},
         assets: [],
-        commands: {prelink, postlink},
+        commands: { prelink, postlink },
       }),
     };
 
     const link = require('../link').func;
-
-    link(['react-native-blur'], config).then(() => {
-      expect(prelink.calledBefore(registerNativeModule)).toBeTruthy();
-      expect(postlink.calledAfter(registerNativeModule)).toBeTruthy();
-      done();
-    });
+    await link(['react-native-blur'], config);
+
+    expect(prelink.mock.invocationCallOrder[0]).toBeLessThan(
+      registerNativeModule.mock.invocationCallOrder[0],
+    );
+    expect(postlink.mock.invocationCallOrder[0]).toBeGreaterThan(
+      registerNativeModule.mock.invocationCallOrder[0],
+    );
   });
 
   it('should copy assets from both project and dependencies projects', done => {
     const dependencyAssets = ['Fonts/Font.ttf'];
-    const dependencyConfig = {assets: dependencyAssets, ios: {}, commands: {}};
+    const dependencyConfig = { assets: dependencyAssets, ios: {}, commands: {} };
     const projectAssets = ['Fonts/FontC.ttf'];
-    const copyAssets = sinon.stub();
+    const copyAssets = jest.fn();
 
     jest.setMock('../ios/copyAssets.js', copyAssets);
 
     const linkConfig = require('../ios');
     const config = {
-      getPlatformConfig: () => ({ios: {linkConfig: linkConfig}}),
-      getProjectConfig: () => ({ios: {}, assets: projectAssets}),
-      getDependencyConfig: sinon.stub().returns(dependencyConfig),
+      getPlatformConfig: () => ({ ios: { linkConfig: linkConfig } }),
+      getProjectConfig: () => ({ ios: {}, assets: projectAssets }),
+      getDependencyConfig: jest.fn().mockReturnValue(dependencyConfig),
     };
 
     const link = require('../link').func;
 
     link(['react-native-blur'], config).then(() => {
-      expect(copyAssets.calledOnce).toBeTruthy();
-      expect(copyAssets.getCall(0).args[0]).toEqual(
+      expect(copyAssets.mock.calls.length).toBe(1);
+      expect(copyAssets.mock.calls[0][0]).toEqual(
         projectAssets.concat(dependencyAssets),
       );
       done();
diff --git a/local-cli/link/__tests__/pods/findLineToAddPod.spec.js b/local-cli/link/__tests__/pods/findLineToAddPod.spec.js
index e0b179a8f943b4..d27b341dd4580d 100644
--- a/local-cli/link/__tests__/pods/findLineToAddPod.spec.js
+++ b/local-cli/link/__tests__/pods/findLineToAddPod.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/pods/findMarkedLinesInPodfile.spec.js b/local-cli/link/__tests__/pods/findMarkedLinesInPodfile.spec.js
index 7dd2b77af939f5..2c9d8decd53b3a 100644
--- a/local-cli/link/__tests__/pods/findMarkedLinesInPodfile.spec.js
+++ b/local-cli/link/__tests__/pods/findMarkedLinesInPodfile.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/pods/findPodTargetLine.spec.js b/local-cli/link/__tests__/pods/findPodTargetLine.spec.js
index 04b142856f82c9..6b7b360e0e51c7 100644
--- a/local-cli/link/__tests__/pods/findPodTargetLine.spec.js
+++ b/local-cli/link/__tests__/pods/findPodTargetLine.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/pods/isInstalled.spec.js b/local-cli/link/__tests__/pods/isInstalled.spec.js
index ba9b3f03753883..dbf4845749c55b 100644
--- a/local-cli/link/__tests__/pods/isInstalled.spec.js
+++ b/local-cli/link/__tests__/pods/isInstalled.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/pods/removePodEntry.spec.js b/local-cli/link/__tests__/pods/removePodEntry.spec.js
index 576664970ba36b..83106805c61e0a 100644
--- a/local-cli/link/__tests__/pods/removePodEntry.spec.js
+++ b/local-cli/link/__tests__/pods/removePodEntry.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/__tests__/promiseWaterfall.spec.js b/local-cli/link/__tests__/promiseWaterfall.spec.js
index 3f9adc55a2c969..3507ce991df688 100644
--- a/local-cli/link/__tests__/promiseWaterfall.spec.js
+++ b/local-cli/link/__tests__/promiseWaterfall.spec.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,35 +10,38 @@
 
 'use strict';
 
-const sinon = require('sinon');
 const promiseWaterfall = require('../promiseWaterfall');
 
 describe('promiseWaterfall', () => {
-  it('should run promises in a sequence', done => {
-    const tasks = [sinon.stub(), sinon.stub()];
+  it('should run promises in a sequence', async () => {
+    const tasks = [jest.fn(), jest.fn()];
 
-    promiseWaterfall(tasks).then(() => {
-      expect(tasks[0].calledBefore(tasks[1])).toBeTruthy();
-      done();
-    });
+    await promiseWaterfall(tasks);
+
+    // Check that tasks[0] is executed before tasks[1].
+    expect(tasks[0].mock.invocationCallOrder[0]).toBeLessThan(
+      tasks[1].mock.invocationCallOrder[0],
+    );
   });
 
-  it('should resolve with last promise value', done => {
-    const tasks = [sinon.stub().returns(1), sinon.stub().returns(2)];
+  it('should resolve with last promise value', async () => {
+    const tasks = [jest.fn().mockReturnValue(1), jest.fn().mockReturnValue(2)];
 
-    promiseWaterfall(tasks).then(value => {
-      expect(value).toEqual(2);
-      done();
-    });
+    expect(await promiseWaterfall(tasks)).toEqual(2);
   });
 
   it('should stop the sequence when one of promises is rejected', done => {
     const error = new Error();
-    const tasks = [sinon.stub().throws(error), sinon.stub().returns(2)];
+    const tasks = [
+      jest.fn().mockImplementation(() => {
+        throw error;
+      }),
+      jest.fn().mockReturnValue(2),
+    ];
 
     promiseWaterfall(tasks).catch(err => {
       expect(err).toEqual(error);
-      expect(tasks[1].callCount).toEqual(0);
+      expect(tasks[1].mock.calls.length).toEqual(0);
       done();
     });
   });
diff --git a/local-cli/link/android/copyAssets.js b/local-cli/link/android/copyAssets.js
index dbaeaa24e93ecd..4b58f46fb86865 100644
--- a/local-cli/link/android/copyAssets.js
+++ b/local-cli/link/android/copyAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/fs.js b/local-cli/link/android/fs.js
index 51ee62136b42d9..a7cf3d029a59c5 100644
--- a/local-cli/link/android/fs.js
+++ b/local-cli/link/android/fs.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/index.js b/local-cli/link/android/index.js
index 3eacc41750228c..d8b8f5addbc2cf 100644
--- a/local-cli/link/android/index.js
+++ b/local-cli/link/android/index.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 module.exports = function() {
   return {
diff --git a/local-cli/link/android/isInstalled.js b/local-cli/link/android/isInstalled.js
index 43a53396e9228d..24f07788702f03 100644
--- a/local-cli/link/android/isInstalled.js
+++ b/local-cli/link/android/isInstalled.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/applyParams.js b/local-cli/link/android/patches/applyParams.js
index 2fd193ad685259..11b66bef280b3d 100644
--- a/local-cli/link/android/patches/applyParams.js
+++ b/local-cli/link/android/patches/applyParams.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/applyPatch.js b/local-cli/link/android/patches/applyPatch.js
index 05393a894722e6..fd17c80b263494 100644
--- a/local-cli/link/android/patches/applyPatch.js
+++ b/local-cli/link/android/patches/applyPatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/makeBuildPatch.js b/local-cli/link/android/patches/makeBuildPatch.js
index dfaab8f6998bfe..db8feb5a895c47 100644
--- a/local-cli/link/android/patches/makeBuildPatch.js
+++ b/local-cli/link/android/patches/makeBuildPatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -12,12 +12,12 @@ const normalizeProjectName = require('./normalizeProjectName');
 module.exports = function makeBuildPatch(name) {
   const normalizedProjectName = normalizeProjectName(name);
   const installPattern = new RegExp(
-    `\\s{4}(compile)(\\(|\\s)(project)\\(\\\':${normalizedProjectName}\\\'\\)(\\)|\\s)`,
+    `\\s{4}(implementation)(\\(|\\s)(project)\\(\\\':${normalizedProjectName}\\\'\\)(\\)|\\s)`,
   );
 
   return {
     installPattern,
     pattern: /[^ \t]dependencies {(\r\n|\n)/,
-    patch: `    compile project(':${normalizedProjectName}')\n`,
+    patch: `    implementation project(':${normalizedProjectName}')\n`,
   };
 };
diff --git a/local-cli/link/android/patches/makeImportPatch.js b/local-cli/link/android/patches/makeImportPatch.js
index 90bd0f50326b64..983f2a4e0367e5 100644
--- a/local-cli/link/android/patches/makeImportPatch.js
+++ b/local-cli/link/android/patches/makeImportPatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/makePackagePatch.js b/local-cli/link/android/patches/makePackagePatch.js
index 29c01b76bb84f0..a4791ef5b4864b 100644
--- a/local-cli/link/android/patches/makePackagePatch.js
+++ b/local-cli/link/android/patches/makePackagePatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/makeSettingsPatch.js b/local-cli/link/android/patches/makeSettingsPatch.js
index 76885f706606b0..a6bf7ca2bb3dc6 100644
--- a/local-cli/link/android/patches/makeSettingsPatch.js
+++ b/local-cli/link/android/patches/makeSettingsPatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,8 +10,6 @@
 const path = require('path');
 const normalizeProjectName = require('./normalizeProjectName');
 
-const isWin = process.platform === 'win32';
-
 module.exports = function makeSettingsPatch(
   name,
   androidConfig,
@@ -23,16 +21,6 @@ module.exports = function makeSettingsPatch(
   );
   const normalizedProjectName = normalizeProjectName(name);
 
-  /*
-   * Fix for Windows
-   * Backslashes is the escape character and will result in
-   * an invalid path in settings.gradle
-   * https://github.com/rnpm/rnpm/issues/113
-   */
-  if (isWin) {
-    projectDir = projectDir.replace(/\\/g, '/');
-  }
-
   return {
     pattern: '\n',
     patch:
diff --git a/local-cli/link/android/patches/makeStringsPatch.js b/local-cli/link/android/patches/makeStringsPatch.js
index a6b40e46f2cad8..efda88671e6d3a 100644
--- a/local-cli/link/android/patches/makeStringsPatch.js
+++ b/local-cli/link/android/patches/makeStringsPatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/patches/normalizeProjectName.js b/local-cli/link/android/patches/normalizeProjectName.js
index 97dae55ededc28..bdf457d74b9a04 100644
--- a/local-cli/link/android/patches/normalizeProjectName.js
+++ b/local-cli/link/android/patches/normalizeProjectName.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 module.exports = function normalizeProjectName(name) {
   return name.replace(/\//g, '_');
diff --git a/local-cli/link/android/patches/revokePatch.js b/local-cli/link/android/patches/revokePatch.js
index 14972e46ed9651..070972e424ef39 100644
--- a/local-cli/link/android/patches/revokePatch.js
+++ b/local-cli/link/android/patches/revokePatch.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/registerNativeModule.js b/local-cli/link/android/registerNativeModule.js
index f73932c0235469..67ddfc7eb97a65 100644
--- a/local-cli/link/android/registerNativeModule.js
+++ b/local-cli/link/android/registerNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/unlinkAssets.js b/local-cli/link/android/unlinkAssets.js
index 81e90c5e71ae52..fc6f7db3913a6c 100644
--- a/local-cli/link/android/unlinkAssets.js
+++ b/local-cli/link/android/unlinkAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/android/unregisterNativeModule.js b/local-cli/link/android/unregisterNativeModule.js
index 880070afa503c4..27aa977a3c4003 100644
--- a/local-cli/link/android/unregisterNativeModule.js
+++ b/local-cli/link/android/unregisterNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/commandStub.js b/local-cli/link/commandStub.js
index 768a94f98d32ed..332acf7f203c36 100644
--- a/local-cli/link/commandStub.js
+++ b/local-cli/link/commandStub.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/getDependencyConfig.js b/local-cli/link/getDependencyConfig.js
index 19c54324e77d01..fcecae2efb5078 100644
--- a/local-cli/link/getDependencyConfig.js
+++ b/local-cli/link/getDependencyConfig.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/getProjectDependencies.js b/local-cli/link/getProjectDependencies.js
index 9b4838ba923fad..0cb1165c02dff6 100644
--- a/local-cli/link/getProjectDependencies.js
+++ b/local-cli/link/getProjectDependencies.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/groupFilesByType.js b/local-cli/link/groupFilesByType.js
index 47aa7f6b52edec..d35e8e59e30cac 100644
--- a/local-cli/link/groupFilesByType.js
+++ b/local-cli/link/groupFilesByType.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/addFileToProject.js b/local-cli/link/ios/addFileToProject.js
index d3a560529c049e..a534399667b59a 100644
--- a/local-cli/link/ios/addFileToProject.js
+++ b/local-cli/link/ios/addFileToProject.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/addProjectToLibraries.js b/local-cli/link/ios/addProjectToLibraries.js
index e15c8baf410e70..269f30d726a722 100644
--- a/local-cli/link/ios/addProjectToLibraries.js
+++ b/local-cli/link/ios/addProjectToLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/addSharedLibraries.js b/local-cli/link/ios/addSharedLibraries.js
index e12d913ba236cc..c8050689dcc79e 100644
--- a/local-cli/link/ios/addSharedLibraries.js
+++ b/local-cli/link/ios/addSharedLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/addToHeaderSearchPaths.js b/local-cli/link/ios/addToHeaderSearchPaths.js
index dd3923451b34b7..e3cd6db2f95422 100644
--- a/local-cli/link/ios/addToHeaderSearchPaths.js
+++ b/local-cli/link/ios/addToHeaderSearchPaths.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/common/isInstalled.js b/local-cli/link/ios/common/isInstalled.js
index 71af956bdcff0c..3e5542fe13f97b 100644
--- a/local-cli/link/ios/common/isInstalled.js
+++ b/local-cli/link/ios/common/isInstalled.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 const isInstalledIOS = require('../isInstalled');
 const isInstalledPods = require('../../pods/isInstalled');
diff --git a/local-cli/link/ios/common/registerNativeModule.js b/local-cli/link/ios/common/registerNativeModule.js
index 72057712fe0ec6..8a86e688753d29 100644
--- a/local-cli/link/ios/common/registerNativeModule.js
+++ b/local-cli/link/ios/common/registerNativeModule.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 const registerDependencyIOS = require('../registerNativeModule');
 const registerDependencyPods = require('../../pods/registerNativeModule');
diff --git a/local-cli/link/ios/common/unregisterNativeModule.js b/local-cli/link/ios/common/unregisterNativeModule.js
index dbf7bc4147dbb3..69d25ea591860e 100644
--- a/local-cli/link/ios/common/unregisterNativeModule.js
+++ b/local-cli/link/ios/common/unregisterNativeModule.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 const compact = require('lodash').compact;
 const isInstalledIOS = require('../isInstalled');
diff --git a/local-cli/link/ios/copyAssets.js b/local-cli/link/ios/copyAssets.js
index 0510569900e073..314b68b60d8f82 100644
--- a/local-cli/link/ios/copyAssets.js
+++ b/local-cli/link/ios/copyAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,7 +10,6 @@
 const fs = require('fs-extra');
 const path = require('path');
 const xcode = require('xcode');
-const log = require('npmlog');
 const groupFilesByType = require('../groupFilesByType');
 const createGroupWithMessage = require('./createGroupWithMessage');
 const getPlist = require('./getPlist');
diff --git a/local-cli/link/ios/createGroup.js b/local-cli/link/ios/createGroup.js
index 4e9cbccc4188ad..473bb4ccd34fb4 100644
--- a/local-cli/link/ios/createGroup.js
+++ b/local-cli/link/ios/createGroup.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/createGroupWithMessage.js b/local-cli/link/ios/createGroupWithMessage.js
index 7d9f1aaa05ddae..c353d915929d7e 100644
--- a/local-cli/link/ios/createGroupWithMessage.js
+++ b/local-cli/link/ios/createGroupWithMessage.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getBuildProperty.js b/local-cli/link/ios/getBuildProperty.js
index 074e37816e921f..bf0291a2d5cd72 100644
--- a/local-cli/link/ios/getBuildProperty.js
+++ b/local-cli/link/ios/getBuildProperty.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getGroup.js b/local-cli/link/ios/getGroup.js
index fcbfbf16da83ef..c53e731d96f888 100644
--- a/local-cli/link/ios/getGroup.js
+++ b/local-cli/link/ios/getGroup.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -9,8 +9,8 @@
 
 const getFirstProject = project => project.getFirstProject().firstProject;
 
-const findGroup = (group, name) =>
-  group.children.find(group => group.comment === name);
+const findGroup = (groups, name) =>
+  groups.children.find(group => group.comment === name);
 
 /**
  * Returns group from .xcodeproj if one exists, null otherwise
@@ -23,22 +23,22 @@ const findGroup = (group, name) =>
 module.exports = function getGroup(project, path) {
   const firstProject = getFirstProject(project);
 
-  var group = project.getPBXGroupByKey(firstProject.mainGroup);
+  let groups = project.getPBXGroupByKey(firstProject.mainGroup);
 
   if (!path) {
-    return group;
+    return groups;
   }
 
   for (var name of path.split('/')) {
-    var foundGroup = findGroup(group, name);
+    var foundGroup = findGroup(groups, name);
 
     if (foundGroup) {
-      group = project.getPBXGroupByKey(foundGroup.value);
+      groups = project.getPBXGroupByKey(foundGroup.value);
     } else {
-      group = null;
+      groups = null;
       break;
     }
   }
 
-  return group;
+  return groups;
 };
diff --git a/local-cli/link/ios/getHeaderSearchPath.js b/local-cli/link/ios/getHeaderSearchPath.js
index 74246abafb60b6..bd1b5f5c5e8b77 100644
--- a/local-cli/link/ios/getHeaderSearchPath.js
+++ b/local-cli/link/ios/getHeaderSearchPath.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getHeadersInFolder.js b/local-cli/link/ios/getHeadersInFolder.js
index c63c450c767f83..562cac9a549a10 100644
--- a/local-cli/link/ios/getHeadersInFolder.js
+++ b/local-cli/link/ios/getHeadersInFolder.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getPlist.js b/local-cli/link/ios/getPlist.js
index 3948e8d5ec7916..61d0b51256d218 100644
--- a/local-cli/link/ios/getPlist.js
+++ b/local-cli/link/ios/getPlist.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getPlistPath.js b/local-cli/link/ios/getPlistPath.js
index 72c6be75d176e4..f8d570b9f21768 100644
--- a/local-cli/link/ios/getPlistPath.js
+++ b/local-cli/link/ios/getPlistPath.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/getProducts.js b/local-cli/link/ios/getProducts.js
deleted file mode 100644
index dd0b0431938ea4..00000000000000
--- a/local-cli/link/ios/getProducts.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-/**
- * Given xcodeproj it returns list of products ending with
- * .a extension, so that we know what elements add to target
- * project static library
- */
-module.exports = function getProducts(project) {
-  return project
-    .pbxGroupByName('Products')
-    .children.map(c => c.comment)
-    .filter(c => c.indexOf('.a') > -1);
-};
diff --git a/local-cli/link/ios/getTargets.js b/local-cli/link/ios/getTargets.js
index b81145a5e987eb..15f958598e61c8 100644
--- a/local-cli/link/ios/getTargets.js
+++ b/local-cli/link/ios/getTargets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/hasLibraryImported.js b/local-cli/link/ios/hasLibraryImported.js
index eed9c6e1cb2af6..62805eb3a5004a 100644
--- a/local-cli/link/ios/hasLibraryImported.js
+++ b/local-cli/link/ios/hasLibraryImported.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/index.js b/local-cli/link/ios/index.js
index bf6b57b2618671..aa31fd2ba11a32 100644
--- a/local-cli/link/ios/index.js
+++ b/local-cli/link/ios/index.js
@@ -1,4 +1,11 @@
-/** @format */
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
 
 module.exports = function() {
   return {
diff --git a/local-cli/link/ios/isInstalled.js b/local-cli/link/ios/isInstalled.js
index 084c8addda6fb1..07cfb12543b2d5 100644
--- a/local-cli/link/ios/isInstalled.js
+++ b/local-cli/link/ios/isInstalled.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/mapHeaderSearchPaths.js b/local-cli/link/ios/mapHeaderSearchPaths.js
index 64a8f6560cac46..2754602d4ce087 100644
--- a/local-cli/link/ios/mapHeaderSearchPaths.js
+++ b/local-cli/link/ios/mapHeaderSearchPaths.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/registerNativeModule.js b/local-cli/link/ios/registerNativeModule.js
index 41cca896709f8d..b68230ce31ea79 100644
--- a/local-cli/link/ios/registerNativeModule.js
+++ b/local-cli/link/ios/registerNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,19 +10,16 @@
 const xcode = require('xcode');
 const fs = require('fs');
 const path = require('path');
-const log = require('npmlog');
 
 const addToHeaderSearchPaths = require('./addToHeaderSearchPaths');
 const getHeadersInFolder = require('./getHeadersInFolder');
 const getHeaderSearchPath = require('./getHeaderSearchPath');
-const getProducts = require('./getProducts');
 const getTargets = require('./getTargets');
 const createGroupWithMessage = require('./createGroupWithMessage');
 const addFileToProject = require('./addFileToProject');
 const addProjectToLibraries = require('./addProjectToLibraries');
 const addSharedLibraries = require('./addSharedLibraries');
 const isEmpty = require('lodash').isEmpty;
-const getGroup = require('./getGroup');
 
 /**
  * Register native module IOS adds given dependency to project by adding
diff --git a/local-cli/link/ios/removeFromHeaderSearchPaths.js b/local-cli/link/ios/removeFromHeaderSearchPaths.js
index ac9ead94c65a9a..e7fc30fa1e80f5 100644
--- a/local-cli/link/ios/removeFromHeaderSearchPaths.js
+++ b/local-cli/link/ios/removeFromHeaderSearchPaths.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeFromPbxItemContainerProxySection.js b/local-cli/link/ios/removeFromPbxItemContainerProxySection.js
index d7e8f05f16612a..b2277ce882481c 100644
--- a/local-cli/link/ios/removeFromPbxItemContainerProxySection.js
+++ b/local-cli/link/ios/removeFromPbxItemContainerProxySection.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeFromPbxReferenceProxySection.js b/local-cli/link/ios/removeFromPbxReferenceProxySection.js
index 05346ccabff940..52f8056a5f414e 100644
--- a/local-cli/link/ios/removeFromPbxReferenceProxySection.js
+++ b/local-cli/link/ios/removeFromPbxReferenceProxySection.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeFromProjectReferences.js b/local-cli/link/ios/removeFromProjectReferences.js
index 4eafe81e84131c..8a776bf7206b5f 100644
--- a/local-cli/link/ios/removeFromProjectReferences.js
+++ b/local-cli/link/ios/removeFromProjectReferences.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeFromStaticLibraries.js b/local-cli/link/ios/removeFromStaticLibraries.js
index 1fa674331a844f..7beaf880446f2a 100644
--- a/local-cli/link/ios/removeFromStaticLibraries.js
+++ b/local-cli/link/ios/removeFromStaticLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeProductGroup.js b/local-cli/link/ios/removeProductGroup.js
index a15fd9d750f4a1..f012ff25c0c787 100644
--- a/local-cli/link/ios/removeProductGroup.js
+++ b/local-cli/link/ios/removeProductGroup.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeProjectFromLibraries.js b/local-cli/link/ios/removeProjectFromLibraries.js
index 5dc572b9ef5072..0402d777a3213c 100644
--- a/local-cli/link/ios/removeProjectFromLibraries.js
+++ b/local-cli/link/ios/removeProjectFromLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeProjectFromProject.js b/local-cli/link/ios/removeProjectFromProject.js
index 76e9348184e1f6..fbae783f4eeaa3 100644
--- a/local-cli/link/ios/removeProjectFromProject.js
+++ b/local-cli/link/ios/removeProjectFromProject.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/removeSharedLibraries.js b/local-cli/link/ios/removeSharedLibraries.js
index e0306d28b0ce5a..1a34b7c1afa0dc 100644
--- a/local-cli/link/ios/removeSharedLibraries.js
+++ b/local-cli/link/ios/removeSharedLibraries.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/unlinkAssets.js b/local-cli/link/ios/unlinkAssets.js
index 67f91cf6c6109e..1df299fdda811a 100644
--- a/local-cli/link/ios/unlinkAssets.js
+++ b/local-cli/link/ios/unlinkAssets.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/ios/unregisterNativeModule.js b/local-cli/link/ios/unregisterNativeModule.js
index c686b8c4969fe8..c9b83a880d4516 100644
--- a/local-cli/link/ios/unregisterNativeModule.js
+++ b/local-cli/link/ios/unregisterNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -14,7 +14,6 @@ const difference = require('lodash').difference;
 const isEmpty = require('lodash').isEmpty;
 
 const getGroup = require('./getGroup');
-const getProducts = require('./getProducts');
 const getTargets = require('./getTargets');
 const getHeadersInFolder = require('./getHeadersInFolder');
 const getHeaderSearchPath = require('./getHeaderSearchPath');
diff --git a/local-cli/link/ios/writePlist.js b/local-cli/link/ios/writePlist.js
index b2ea1ae1efc8ec..009de34e26f079 100644
--- a/local-cli/link/ios/writePlist.js
+++ b/local-cli/link/ios/writePlist.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/link.js b/local-cli/link/link.js
index 50d7f16e99b21f..752e75e2294ff0 100644
--- a/local-cli/link/link.js
+++ b/local-cli/link/link.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/addPodEntry.js b/local-cli/link/pods/addPodEntry.js
index 8ce5654ea4aa97..e89716eb60dd4d 100644
--- a/local-cli/link/pods/addPodEntry.js
+++ b/local-cli/link/pods/addPodEntry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/findLineToAddPod.js b/local-cli/link/pods/findLineToAddPod.js
index 629296e9f662ad..d6902838ea336e 100644
--- a/local-cli/link/pods/findLineToAddPod.js
+++ b/local-cli/link/pods/findLineToAddPod.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/findMarkedLinesInPodfile.js b/local-cli/link/pods/findMarkedLinesInPodfile.js
index b58a0d48679d29..5df1c33ac2be33 100644
--- a/local-cli/link/pods/findMarkedLinesInPodfile.js
+++ b/local-cli/link/pods/findMarkedLinesInPodfile.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/findPodTargetLine.js b/local-cli/link/pods/findPodTargetLine.js
index 10617584affccf..22070f8ddf8160 100644
--- a/local-cli/link/pods/findPodTargetLine.js
+++ b/local-cli/link/pods/findPodTargetLine.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/isInstalled.js b/local-cli/link/pods/isInstalled.js
index 7f5d773d8a803b..d7602d14dda18c 100644
--- a/local-cli/link/pods/isInstalled.js
+++ b/local-cli/link/pods/isInstalled.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/readPodfile.js b/local-cli/link/pods/readPodfile.js
index f70609628f27e9..281a0a0e496d5a 100644
--- a/local-cli/link/pods/readPodfile.js
+++ b/local-cli/link/pods/readPodfile.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/registerNativeModule.js b/local-cli/link/pods/registerNativeModule.js
index 8ae16a3059885f..f8e757b2708607 100644
--- a/local-cli/link/pods/registerNativeModule.js
+++ b/local-cli/link/pods/registerNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/removePodEntry.js b/local-cli/link/pods/removePodEntry.js
index 83f063ad289c76..02ef4746f81b33 100644
--- a/local-cli/link/pods/removePodEntry.js
+++ b/local-cli/link/pods/removePodEntry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/savePodFile.js b/local-cli/link/pods/savePodFile.js
index e050c822c057af..640bb646f88640 100644
--- a/local-cli/link/pods/savePodFile.js
+++ b/local-cli/link/pods/savePodFile.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pods/unregisterNativeModule.js b/local-cli/link/pods/unregisterNativeModule.js
index 539e0389a5df0d..048e3e8de7e075 100644
--- a/local-cli/link/pods/unregisterNativeModule.js
+++ b/local-cli/link/pods/unregisterNativeModule.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/pollParams.js b/local-cli/link/pollParams.js
index 66aa53e9682511..6cf23020d46f09 100644
--- a/local-cli/link/pollParams.js
+++ b/local-cli/link/pollParams.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/promiseWaterfall.js b/local-cli/link/promiseWaterfall.js
index 9b6177d6903258..0a2ddac88cefbe 100644
--- a/local-cli/link/promiseWaterfall.js
+++ b/local-cli/link/promiseWaterfall.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/promisify.js b/local-cli/link/promisify.js
index b99f2f43a0f731..2605bf95e12140 100644
--- a/local-cli/link/promisify.js
+++ b/local-cli/link/promisify.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/link/unlink.js b/local-cli/link/unlink.js
index c886c4f46b7dd3..48ed5f192c0e0f 100644
--- a/local-cli/link/unlink.js
+++ b/local-cli/link/unlink.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/logAndroid/logAndroid.js b/local-cli/logAndroid/logAndroid.js
index b8608e96e40880..322bc8eae444f1 100644
--- a/local-cli/logAndroid/logAndroid.js
+++ b/local-cli/logAndroid/logAndroid.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/logIOS/logIOS.js b/local-cli/logIOS/logIOS.js
index 272dc038260243..9d9aa68faf4237 100644
--- a/local-cli/logIOS/logIOS.js
+++ b/local-cli/logIOS/logIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runAndroid/adb.js b/local-cli/runAndroid/adb.js
index 310fbad04ab7b0..7846a4724d91d3 100644
--- a/local-cli/runAndroid/adb.js
+++ b/local-cli/runAndroid/adb.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runAndroid/runAndroid.js b/local-cli/runAndroid/runAndroid.js
index 2bb7dd7446f262..f94caa2661b57f 100644
--- a/local-cli/runAndroid/runAndroid.js
+++ b/local-cli/runAndroid/runAndroid.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -121,7 +121,7 @@ function buildAndRun(args) {
   const adbPath = getAdbPath();
   if (args.deviceId) {
     if (isString(args.deviceId)) {
-      runOnSpecificDevice(
+      return runOnSpecificDevice(
         args,
         cmd,
         packageNameWithSuffix,
@@ -132,7 +132,13 @@ function buildAndRun(args) {
       console.log(chalk.red('Argument missing for parameter --deviceId'));
     }
   } else {
-    runOnAllDevices(args, cmd, packageNameWithSuffix, packageName, adbPath);
+    return runOnAllDevices(
+      args,
+      cmd,
+      packageNameWithSuffix,
+      packageName,
+      adbPath,
+    );
   }
 }
 
@@ -305,7 +311,7 @@ function runOnAllDevices(
     // stderr is automatically piped from the gradle process, so the user
     // should see the error already, there is no need to do
     // `console.log(e.stderr)`
-    return Promise.reject();
+    return Promise.reject(e);
   }
   const devices = adb.getDevices();
   if (devices && devices.length > 0) {
@@ -343,7 +349,7 @@ function runOnAllDevices(
       // stderr is automatically piped from the gradle process, so the user
       // should see the error already, there is no need to do
       // `console.log(e.stderr)`
-      return Promise.reject();
+      return Promise.reject(e);
     }
   }
 }
diff --git a/local-cli/runIOS/__tests__/findMatchingSimulator-test.js b/local-cli/runIOS/__tests__/findMatchingSimulator-test.js
index 3c59b06839a232..8b9a19552a4e87 100644
--- a/local-cli/runIOS/__tests__/findMatchingSimulator-test.js
+++ b/local-cli/runIOS/__tests__/findMatchingSimulator-test.js
@@ -1,6 +1,6 @@
 /**
  * /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -65,6 +65,58 @@ describe('findMatchingSimulator', () => {
     });
   });
 
+  it('should find simulator with new xcrun format', () => {
+    expect(
+      findMatchingSimulator(
+        {
+          devices: {
+            'iOS 12.1': [
+              {
+                state: 'Shutdown',
+                isAvailable: 'YES',
+                name: 'iPhone 6s',
+                udid: 'D0F29BE7-CC3C-4976-888D-C739B4F50508',
+              },
+              {
+                state: 'Shutdown',
+                isAvailable: 'YES',
+                name: 'iPhone 6',
+                udid: 'BA0D93BD-07E6-4182-9B0A-F60A2474139C',
+              },
+              {
+                state: 'Shutdown',
+                isAvailable: 'YES',
+                name: 'iPhone XS Max',
+                udid: 'B9B5E161-416B-43C4-A78F-729CB96CC8C6',
+                availabilityError: '',
+              },
+              {
+                state: 'Shutdown',
+                isAvailable: 'YES',
+                name: 'iPad Air',
+                udid: '1CCBBF8B-5773-4EA6-BD6F-C308C87A1ADB',
+                availabilityError: '',
+              },
+              {
+                state: 'Shutdown',
+                isAvailable: 'YES',
+                name: 'iPad (5th generation)',
+                udid: '9564ABEE-9EC2-4B4A-B443-D3710929A45A',
+                availabilityError: '',
+              },
+            ],
+          },
+        },
+        'iPhone 6',
+      ),
+    ).toEqual({
+      udid: 'BA0D93BD-07E6-4182-9B0A-F60A2474139C',
+      name: 'iPhone 6',
+      booted: false,
+      version: 'iOS 12.1',
+    });
+  });
+
   it('should return null if no simulators available', () => {
     expect(
       findMatchingSimulator(
@@ -487,6 +539,145 @@ describe('findMatchingSimulator', () => {
     });
   });
 
+  it('should return the simulator with the specified version (multi ios versions)', () => {
+    expect(
+      findMatchingSimulator(
+        {
+          devices: {
+            'iOS 9.2': [
+              {
+                state: 'Shutdown',
+                availability: '(unavailable, runtime profile not found)',
+                name: 'iPhone 4s',
+                udid: 'B9B5E161-416B-43C4-A78F-729CB96CC8C6',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 5',
+                udid: '1CCBBF8B-5773-4EA6-BD6F-C308C87A1ADB',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6',
+                udid: 'BA0D93BD-07E6-4182-9B0A-F60A2474139C',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6 (Plus)',
+                udid: '9564ABEE-9EC2-4B4A-B443-D3710929A45A',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6s',
+                udid: 'D0F29BE7-CC3C-4976-888D-C739B4F50508',
+              },
+            ],
+            'iOS 10.0': [
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6',
+                udid: '2FF48AE5-CC3B-4C80-8D25-48966A6BE2C0',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6 (Plus)',
+                udid: '841E33FE-E8A1-4B65-9FF8-6EAA6442A3FC',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6s',
+                udid: 'CBBB8FB8-77AB-49A9-8297-4CCFE3189C22',
+              },
+              {
+                state: 'Booted',
+                availability: '(available)',
+                name: 'iPhone 7',
+                udid: '3A409DC5-5188-42A6-8598-3AA6F34607A5',
+              },
+            ],
+          },
+        },
+        'iPhone 6s (10.0)',
+      ),
+    ).toEqual({
+      udid: 'CBBB8FB8-77AB-49A9-8297-4CCFE3189C22',
+      name: 'iPhone 6s',
+      booted: false,
+      version: 'iOS 10.0',
+    });
+  });
+
+  it('should return null if the version is specified and no device with the exact version exists (multi ios versions)', () => {
+    expect(
+      findMatchingSimulator(
+        {
+          devices: {
+            'iOS 9.2': [
+              {
+                state: 'Shutdown',
+                availability: '(unavailable, runtime profile not found)',
+                name: 'iPhone 4s',
+                udid: 'B9B5E161-416B-43C4-A78F-729CB96CC8C6',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 5',
+                udid: '1CCBBF8B-5773-4EA6-BD6F-C308C87A1ADB',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6',
+                udid: 'BA0D93BD-07E6-4182-9B0A-F60A2474139C',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6 (Plus)',
+                udid: '9564ABEE-9EC2-4B4A-B443-D3710929A45A',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6s',
+                udid: 'D0F29BE7-CC3C-4976-888D-C739B4F50508',
+              },
+            ],
+            'iOS 10.0': [
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6',
+                udid: '2FF48AE5-CC3B-4C80-8D25-48966A6BE2C0',
+              },
+              {
+                state: 'Shutdown',
+                availability: '(available)',
+                name: 'iPhone 6 (Plus)',
+                udid: '841E33FE-E8A1-4B65-9FF8-6EAA6442A3FC',
+              },
+              {
+                state: 'Booted',
+                availability: '(available)',
+                name: 'iPhone 7',
+                udid: '3A409DC5-5188-42A6-8598-3AA6F34607A5',
+              },
+            ],
+          },
+        },
+        'iPhone 6s (10.0)',
+      ),
+    ).toEqual(null);
+  });
+
   it('should return AppleTV devices if in the list', () => {
     expect(
       findMatchingSimulator(
diff --git a/local-cli/runIOS/__tests__/findXcodeProject-test.js b/local-cli/runIOS/__tests__/findXcodeProject-test.js
index 7e63560b2b2ea7..8071d728f5a59b 100644
--- a/local-cli/runIOS/__tests__/findXcodeProject-test.js
+++ b/local-cli/runIOS/__tests__/findXcodeProject-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runIOS/__tests__/parseIOSDevicesList-test.js b/local-cli/runIOS/__tests__/parseIOSDevicesList-test.js
index 89fca8364ac792..8914b5937396dd 100644
--- a/local-cli/runIOS/__tests__/parseIOSDevicesList-test.js
+++ b/local-cli/runIOS/__tests__/parseIOSDevicesList-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runIOS/findMatchingSimulator.js b/local-cli/runIOS/findMatchingSimulator.js
index f4794c389f1f88..3808936a7110bc 100644
--- a/local-cli/runIOS/findMatchingSimulator.js
+++ b/local-cli/runIOS/findMatchingSimulator.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -10,31 +10,58 @@
 'use strict';
 
 /**
- * Takes in a parsed simulator list and a desired name, and returns an object with the matching simulator.
+ * Takes in a parsed simulator list and a desired name, and returns an object with the matching simulator. The desired
+ * name can optionally include the iOS version in between parenthesis after the device name. Ex: "iPhone 6 (9.2)" in
+ * which case it'll attempt to find a simulator with the exact version specified.
  *
- * If the simulatorName argument is null, we'll go into default mode and return the currently booted simulator, or if
+ * If the simulatorString argument is null, we'll go into default mode and return the currently booted simulator, or if
  * none is booted, it will be the first in the list.
  *
  * @param Object simulators a parsed list from `xcrun simctl list --json devices` command
- * @param String|null simulatorName the string with the name of desired simulator. If null, it will use the currently
+ * @param String|null simulatorString the string with the name of desired simulator. If null, it will use the currently
  *        booted simulator, or if none are booted, the first in the list.
  * @returns {Object} {udid, name, version}
  */
-function findMatchingSimulator(simulators, simulatorName) {
+function findMatchingSimulator(simulators, simulatorString) {
   if (!simulators.devices) {
     return null;
   }
   const devices = simulators.devices;
+
+  const parsedSimulatorName = simulatorString
+    ? simulatorString.match(/(.*)? (?:\((.*)?\))?/)
+    : [];
+  if (parsedSimulatorName[2] !== undefined) {
+    var simulatorVersion = parsedSimulatorName[2];
+    var simulatorName = parsedSimulatorName[1];
+  } else {
+    simulatorName = simulatorString;
+  }
+
   var match;
-  for (let version in devices) {
+  for (const versionDescriptor in devices) {
+    const device = devices[versionDescriptor];
+    let version = versionDescriptor;
+
+    if ((/^com\.apple\.CoreSimulator\.SimRuntime\./g).test(version)) {
+      // Transform "com.apple.CoreSimulator.SimRuntime.iOS-12-2" into "iOS 12.2"
+      version = version.replace(/^com\.apple\.CoreSimulator\.SimRuntime\.([^-]+)-([^-]+)-([^-]+)$/g, '$1 $2.$3');
+    }
+
     // Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
-    if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
+    if (!version.includes('iOS') && !version.includes('tvOS')) {
+      continue;
+    }
+    if (simulatorVersion && !version.endsWith(simulatorVersion)) {
       continue;
     }
-    for (let i in devices[version]) {
-      let simulator = devices[version][i];
+    for (const i in device) {
+      const simulator = device[i];
       // Skipping non-available simulator
-      if (simulator.availability !== '(available)') {
+      if (
+        simulator.availability !== '(available)' &&
+        simulator.isAvailable !== 'YES'
+      ) {
         continue;
       }
       let booted = simulator.state === 'Booted';
diff --git a/local-cli/runIOS/findXcodeProject.js b/local-cli/runIOS/findXcodeProject.js
index 57260a37253a8a..318f11ec849870 100644
--- a/local-cli/runIOS/findXcodeProject.js
+++ b/local-cli/runIOS/findXcodeProject.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runIOS/parseIOSDevicesList.js b/local-cli/runIOS/parseIOSDevicesList.js
index fedb426042101e..0209c796b39807 100644
--- a/local-cli/runIOS/parseIOSDevicesList.js
+++ b/local-cli/runIOS/parseIOSDevicesList.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/runIOS/runIOS.js b/local-cli/runIOS/runIOS.js
index dfabb92b894a4b..a7ecf7d6ddc471 100644
--- a/local-cli/runIOS/runIOS.js
+++ b/local-cli/runIOS/runIOS.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -409,8 +409,10 @@ module.exports = {
   options: [
     {
       command: '--simulator [string]',
-      description: 'Explicitly set simulator to use',
-      default: 'iPhone 6',
+      description:
+        'Explicitly set simulator to use. Optionally include iOS version between' +
+        'parenthesis at the end to match an exact version: "iPhone 6 (10.0)"',
+      default: 'iPhone X',
     },
     {
       command: '--configuration [string]',
diff --git a/local-cli/server/checkNodeVersion.js b/local-cli/server/checkNodeVersion.js
index 9fd026f17c388a..1f73a1e38fb9f3 100644
--- a/local-cli/server/checkNodeVersion.js
+++ b/local-cli/server/checkNodeVersion.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/MiddlewareManager.js b/local-cli/server/middleware/MiddlewareManager.js
index 8692abdcc2aebb..50c8a59f077d4c 100644
--- a/local-cli/server/middleware/MiddlewareManager.js
+++ b/local-cli/server/middleware/MiddlewareManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -17,6 +17,7 @@ const WebSocketServer = require('ws').Server;
 
 const indexPageMiddleware = require('./indexPage');
 const copyToClipBoardMiddleware = require('./copyToClipBoardMiddleware');
+const getSecurityHeadersMiddleware =  require('./getSecurityHeadersMiddleware');
 const loadRawBodyMiddleware = require('./loadRawBodyMiddleware');
 const openStackFrameInEditorMiddleware = require('./openStackFrameInEditorMiddleware');
 const statusPageMiddleware = require('./statusPageMiddleware');
@@ -44,6 +45,7 @@ module.exports = class MiddlewareManager {
 
     this.options = options;
     this.app = connect()
+      .use(getSecurityHeadersMiddleware)
       .use(loadRawBodyMiddleware)
       .use(compression())
       .use('/debugger-ui', serveStatic(debuggerUIFolder))
diff --git a/local-cli/server/middleware/copyToClipBoardMiddleware.js b/local-cli/server/middleware/copyToClipBoardMiddleware.js
index 3f04c69a1584cb..69a3171f958645 100644
--- a/local-cli/server/middleware/copyToClipBoardMiddleware.js
+++ b/local-cli/server/middleware/copyToClipBoardMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/getDevToolsMiddleware.js b/local-cli/server/middleware/getDevToolsMiddleware.js
index 77aab8df9578df..f03fd0bbcec1c6 100644
--- a/local-cli/server/middleware/getDevToolsMiddleware.js
+++ b/local-cli/server/middleware/getDevToolsMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/getSecurityHeadersMiddleware.js b/local-cli/server/middleware/getSecurityHeadersMiddleware.js
new file mode 100644
index 00000000000000..d3bad6bf9511b4
--- /dev/null
+++ b/local-cli/server/middleware/getSecurityHeadersMiddleware.js
@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @strict
+ * @format
+ */
+
+module.exports = function(req, res, next) {
+  const address = req.client.server.address();
+
+  // Block any cross origin request.
+  if (
+    req.headers.origin &&
+    req.headers.origin !== `http://localhost:${address.port}`
+  ) {
+    next(new Error('Unauthorized'));
+    return;
+  }
+
+  // Block MIME-type sniffing.
+  res.setHeader('X-Content-Type-Options', 'nosniff');
+
+  next();
+};
diff --git a/local-cli/server/middleware/indexPage.js b/local-cli/server/middleware/indexPage.js
index 55b55c0f79221d..ee6fc61ad6db8b 100644
--- a/local-cli/server/middleware/indexPage.js
+++ b/local-cli/server/middleware/indexPage.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/loadRawBodyMiddleware.js b/local-cli/server/middleware/loadRawBodyMiddleware.js
index 1530c28fa84c43..553f041292576f 100644
--- a/local-cli/server/middleware/loadRawBodyMiddleware.js
+++ b/local-cli/server/middleware/loadRawBodyMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/openStackFrameInEditorMiddleware.js b/local-cli/server/middleware/openStackFrameInEditorMiddleware.js
index f285489ec20fa4..36cc69ba0d9217 100644
--- a/local-cli/server/middleware/openStackFrameInEditorMiddleware.js
+++ b/local-cli/server/middleware/openStackFrameInEditorMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/statusPageMiddleware.js b/local-cli/server/middleware/statusPageMiddleware.js
index bbc189223ff9c8..b08539d57d647b 100644
--- a/local-cli/server/middleware/statusPageMiddleware.js
+++ b/local-cli/server/middleware/statusPageMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/systraceProfileMiddleware.js b/local-cli/server/middleware/systraceProfileMiddleware.js
index dbf71d41d8cb2c..c66d6f7beaa8c4 100644
--- a/local-cli/server/middleware/systraceProfileMiddleware.js
+++ b/local-cli/server/middleware/systraceProfileMiddleware.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/middleware/unless.js b/local-cli/server/middleware/unless.js
index 016adfa7f22a96..e1aa78ac636008 100644
--- a/local-cli/server/middleware/unless.js
+++ b/local-cli/server/middleware/unless.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/runServer.js b/local-cli/server/runServer.js
index bad3be828d1683..e9439bf60b0f93 100644
--- a/local-cli/server/runServer.js
+++ b/local-cli/server/runServer.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -54,13 +54,29 @@ async function runServer(args: Args, config: ConfigT) {
 
   args.watchFolders.forEach(middlewareManager.serveStatic);
 
+  // $FlowFixMe Metro configuration is immutable.
   config.maxWorkers = args.maxWorkers;
+  // $FlowFixMe Metro configuration is immutable.
   config.server.port = args.port;
+  // $FlowFixMe Metro configuration is immutable.
   config.reporter = reporter;
+  // $FlowFixMe Metro configuration is immutable.
   config.resetCache = args.resetCache;
+  // $FlowFixMe Metro configuration is immutable.
+  config.projectRoot = args.projectRoot;
+  // $FlowFixMe Metro configuration is immutable.
+  config.watchFolders = args.watchFolders.slice(0);
+  // $FlowFixMe Metro configuration is immutable.
   config.server.enhanceMiddleware = middleware =>
     middlewareManager.getConnectInstance().use(middleware);
 
+  if (args.sourceExts !== config.resolver.sourceExts) {
+    // $FlowFixMe Metro configuration is immutable.
+    config.resolver.sourceExts = args.sourceExts.concat(
+      config.resolver.sourceExts,
+    );
+  }
+
   const serverInstance = await Metro.runServer(config, {
     host: args.host,
     secure: args.https,
@@ -87,7 +103,6 @@ async function runServer(args: Args, config: ConfigT) {
   //
   // For more info: https://github.com/nodejs/node/issues/13391
   //
-  // $FlowFixMe (site=react_native_fb)
   serverInstance.keepAliveTimeout = 30000;
 }
 
diff --git a/local-cli/server/server.js b/local-cli/server/server.js
index 4865cbcc7a6920..f7ded732ff139c 100644
--- a/local-cli/server/server.js
+++ b/local-cli/server/server.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -32,8 +32,8 @@ module.exports = {
   options: [
     {
       command: '--port [number]',
-      default: process.env.RCT_METRO_PORT || 8081,
       parse: (val: string) => Number(val),
+      default: (config: ConfigT) => config.server.port,
     },
     {
       command: '--host [string]',
@@ -42,18 +42,14 @@ module.exports = {
     {
       command: '--projectRoot [string]',
       description: 'Specify the main project root',
-      default: (config: ConfigT) => {
-        return config.projectRoot;
-      },
+      default: (config: ConfigT) => config.projectRoot,
     },
     {
       command: '--watchFolders [list]',
       description:
         'Specify any additional folders to be added to the watch list',
       parse: (val: string) => val.split(','),
-      default: (config: ConfigT) => {
-        return config.watchFolders;
-      },
+      default: (config: ConfigT) => config.watchFolders,
     },
     {
       command: '--assetExts [list]',
@@ -81,11 +77,7 @@ module.exports = {
       description:
         'Specify any npm packages that import dependencies with providesModule',
       parse: (val: string) => val.split(','),
-      default: (config: RNConfig) => {
-        return config.resolver
-          ? config.resolver.providesModuleNodeModules
-          : undefined;
-      },
+      default: (config: ConfigT) => config.resolver.providesModuleNodeModules,
     },
     {
       command: '--max-workers [number]',
@@ -93,6 +85,7 @@ module.exports = {
         'Specifies the maximum number of workers the worker-pool ' +
         'will spawn for transforming files. This defaults to the number of the ' +
         'cores available on your machine.',
+      default: (config: ConfigT) => config.maxWorkers,
       parse: (workers: string) => Number(workers),
     },
     {
diff --git a/local-cli/server/util/copyToClipBoard.js b/local-cli/server/util/copyToClipBoard.js
index 0dbf3a786835da..e6b1bd7a18f4aa 100644
--- a/local-cli/server/util/copyToClipBoard.js
+++ b/local-cli/server/util/copyToClipBoard.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -23,15 +23,15 @@ function copyToClipBoard(content) {
   switch (process.platform) {
     case 'darwin':
       var child = spawn('pbcopy', []);
-      child.stdin.end(new Buffer(content, 'utf8'));
+      child.stdin.end(Buffer.from(content, 'utf8'));
       return true;
     case 'win32':
       var child = spawn('clip', []);
-      child.stdin.end(new Buffer(content, 'utf8'));
+      child.stdin.end(Buffer.from(content, 'utf8'));
       return true;
     case 'linux':
       var child = spawn(xsel, ['--clipboard', '--input']);
-      child.stdin.end(new Buffer(content, 'utf8'));
+      child.stdin.end(Buffer.from(content, 'utf8'));
       return true;
     default:
       return false;
diff --git a/local-cli/server/util/debugger-ui/DeltaPatcher.js b/local-cli/server/util/debugger-ui/DeltaPatcher.js
index ecc92dce7b0ec1..7d7734f08e380e 100644
--- a/local-cli/server/util/debugger-ui/DeltaPatcher.js
+++ b/local-cli/server/util/debugger-ui/DeltaPatcher.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -27,10 +27,10 @@
   class DeltaPatcher {
     constructor() {
       this._lastBundle = {
-        pre: new Map(),
-        post: new Map(),
+        revisionId: undefined,
+        pre: '',
+        post: '',
         modules: new Map(),
-        id: undefined,
       };
       this._initialized = false;
       this._lastNumModifiedFiles = 0;
@@ -51,44 +51,50 @@
     /**
      * Applies a Delta Bundle to the current bundle.
      */
-    applyDelta(deltaBundle) {
-      // Make sure that the first received delta is a fresh one.
-      if (!this._initialized && !deltaBundle.reset) {
+    applyDelta(bundle) {
+      // Make sure that the first received bundle is a base.
+      if (!this._initialized && !bundle.base) {
         throw new Error(
-          'DeltaPatcher should receive a fresh Delta when being initialized',
+          'DeltaPatcher should receive a base Bundle when being initialized',
         );
       }
 
       this._initialized = true;
 
-      // Reset the current delta when we receive a fresh delta.
-      if (deltaBundle.reset) {
+      // Reset the current bundle when we receive a base bundle.
+      if (bundle.base) {
+        this._lastNumModifiedFiles = bundle.modules.length;
+
         this._lastBundle = {
-          pre: new Map(),
-          post: new Map(),
-          modules: new Map(),
-          id: undefined,
+          revisionId: bundle.revisionId,
+          pre: bundle.pre,
+          post: bundle.post,
+          modules: new Map(bundle.modules),
         };
-      }
+      } else {
+        this._lastNumModifiedFiles =
+          bundle.modules.length + bundle.deleted.length;
 
-      this._lastNumModifiedFiles =
-        deltaBundle.pre.size + deltaBundle.post.size + deltaBundle.delta.size;
+        this._lastBundle.revisionId = bundle.revisionId;
+
+        for (const [key, value] of bundle.modules) {
+          this._lastBundle.modules.set(key, value);
+        }
+
+        for (const id of bundle.deleted) {
+          this._lastBundle.modules.delete(id);
+        }
+      }
 
       if (this._lastNumModifiedFiles > 0) {
         this._lastModifiedDate = new Date();
       }
 
-      this._patchMap(this._lastBundle.pre, deltaBundle.pre);
-      this._patchMap(this._lastBundle.post, deltaBundle.post);
-      this._patchMap(this._lastBundle.modules, deltaBundle.delta);
-
-      this._lastBundle.id = deltaBundle.id;
-
       return this;
     }
 
-    getLastBundleId() {
-      return this._lastBundle.id;
+    getLastRevisionId() {
+      return this._lastBundle.revisionId;
     }
 
     /**
@@ -107,21 +113,11 @@
 
     getAllModules() {
       return [].concat(
-        Array.from(this._lastBundle.pre.values()),
+        [this._lastBundle.pre],
         Array.from(this._lastBundle.modules.values()),
-        Array.from(this._lastBundle.post.values()),
+        [this._lastBundle.post],
       );
     }
-
-    _patchMap(original, patch) {
-      for (const [key, value] of patch.entries()) {
-        if (value == null) {
-          original.delete(key);
-        } else {
-          original.set(key, value);
-        }
-      }
-    }
   }
 
   DeltaPatcher._deltaPatchers = new Map();
diff --git a/local-cli/server/util/debugger-ui/__tests__/DeltaPatcher-test.js b/local-cli/server/util/debugger-ui/__tests__/DeltaPatcher-test.js
new file mode 100644
index 00000000000000..2bd9db3396dffb
--- /dev/null
+++ b/local-cli/server/util/debugger-ui/__tests__/DeltaPatcher-test.js
@@ -0,0 +1,111 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @emails oncall+javascript_foundation
+ */
+
+'use strict';
+
+describe('DeltaPatcher', () => {
+  const window = (global.window = {});
+  require('../DeltaPatcher');
+
+  it('should initialize to an empty bundle', () => {
+    global.Date = jest.fn();
+    const dp = new window.DeltaPatcher();
+    expect(dp.getLastRevisionId()).toBe(undefined);
+    expect(dp.getLastModifiedDate()).toBe(global.Date.mock.instances[0]);
+    expect(dp.getLastNumModifiedFiles()).toBe(0);
+    // Empty pre and post.
+    expect(dp.getAllModules()).toEqual(['', '']);
+  });
+
+  it('should expect a base bundle at initialization', () => {
+    const dp = new window.DeltaPatcher();
+    expect(() => {
+      dp.applyDelta({
+        base: false,
+        revisionId: 'hello',
+        modules: [],
+        deleted: [],
+      });
+    }).toThrow();
+  });
+
+  it('should accept a base bundle at initialization', () => {
+    const dp = new window.DeltaPatcher();
+    global.Date = jest.fn();
+    dp.applyDelta({
+      base: true,
+      revisionId: 'rev0',
+      pre: 'pre0',
+      post: 'post0',
+      modules: [[0, '__d(0);']],
+    });
+    expect(dp.getLastRevisionId()).toBe('rev0');
+    expect(dp.getLastModifiedDate()).toBe(global.Date.mock.instances[0]);
+    expect(dp.getLastNumModifiedFiles()).toBe(1);
+    expect(dp.getAllModules()).toEqual(['pre0', '__d(0);', 'post0']);
+  });
+
+  it('should accept a delta bundle after a base bundle', () => {
+    const dp = new window.DeltaPatcher();
+    dp.applyDelta({
+      base: true,
+      revisionId: 'rev0',
+      pre: 'pre0',
+      post: 'post0',
+      modules: [[0, '__d(0);'], [1, '__d(1);'], [2, '__d(2);']],
+    });
+    global.Date = jest.fn();
+    dp.applyDelta({
+      base: false,
+      revisionId: 'rev1',
+      modules: [[1, '__d(1.1);'], [3, '__d(3);']],
+      deleted: [0],
+    });
+    expect(dp.getLastRevisionId()).toBe('rev1');
+    expect(dp.getLastModifiedDate()).toBe(global.Date.mock.instances[0]);
+    expect(dp.getLastNumModifiedFiles()).toBe(3);
+    expect(dp.getAllModules()).toEqual([
+      'pre0',
+      '__d(1.1);',
+      '__d(2);',
+      '__d(3);',
+      'post0',
+    ]);
+  });
+
+  it('should accept a base bundle after initialization', () => {
+    const dp = new window.DeltaPatcher();
+    dp.applyDelta({
+      base: true,
+      revisionId: 'rev0',
+      pre: 'pre0',
+      post: 'post0',
+      modules: [[0, '__d(0);'], [1, '__d(1);'], [2, '__d(2);']],
+    });
+    dp.applyDelta({
+      base: false,
+      revisionId: 'rev1',
+      modules: [[1, '__d(1.1);'], [3, '__d(3);']],
+      deleted: [0],
+    });
+    global.Date = jest.fn();
+    dp.applyDelta({
+      base: true,
+      revisionId: 'rev2',
+      pre: 'pre2',
+      post: 'post2',
+      modules: [[4, '__d(4);'], [5, '__d(5);']],
+    });
+    expect(dp.getLastRevisionId()).toBe('rev2');
+    expect(dp.getLastModifiedDate()).toBe(global.Date.mock.instances[0]);
+    expect(dp.getLastNumModifiedFiles()).toBe(2);
+    expect(dp.getAllModules()).toEqual(['pre2', '__d(4);', '__d(5);', 'post2']);
+  });
+});
diff --git a/local-cli/server/util/debugger-ui/debuggerWorker.js b/local-cli/server/util/debugger-ui/debuggerWorker.js
index ad820c16fc025d..070d753b712485 100644
--- a/local-cli/server/util/debugger-ui/debuggerWorker.js
+++ b/local-cli/server/util/debugger-ui/debuggerWorker.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/util/debugger-ui/deltaUrlToBlobUrl.js b/local-cli/server/util/debugger-ui/deltaUrlToBlobUrl.js
index d916ad4e955e79..c5aff0f545e692 100644
--- a/local-cli/server/util/debugger-ui/deltaUrlToBlobUrl.js
+++ b/local-cli/server/util/debugger-ui/deltaUrlToBlobUrl.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,31 +22,29 @@
   async function deltaUrlToBlobUrl(deltaUrl) {
     const client = global.DeltaPatcher.get(deltaUrl);
 
-    const deltaBundleId = client.getLastBundleId()
-      ? `&deltaBundleId=${client.getLastBundleId()}`
+    const revisionId = client.getLastRevisionId()
+      ? `&revisionId=${client.getLastRevisionId()}`
       : '';
 
-    const data = await fetch(deltaUrl + deltaBundleId);
+    const data = await fetch(deltaUrl + revisionId);
     const bundle = await data.json();
 
-    const deltaPatcher = client.applyDelta({
-      id: bundle.id,
-      pre: new Map(bundle.pre),
-      post: new Map(bundle.post),
-      delta: new Map(bundle.delta),
-      reset: bundle.reset,
-    });
+    const deltaPatcher = client.applyDelta(bundle);
 
     let cachedBundle = cachedBundleUrls.get(deltaUrl);
 
     // If nothing changed, avoid recreating a bundle blob by reusing the
     // previous one.
-    if (deltaPatcher.getLastNumModifiedFiles() === 0 && cachedBundle) {
+    if (
+      deltaPatcher.getLastNumModifiedFiles() === 0 &&
+      cachedBundle != null &&
+      cachedBundle !== ''
+    ) {
       return cachedBundle;
     }
 
     // Clean up the previous bundle URL to not leak memory.
-    if (cachedBundle) {
+    if (cachedBundle != null && cachedBundle !== '') {
       URL.revokeObjectURL(cachedBundle);
     }
 
diff --git a/local-cli/server/util/debugger-ui/index.html b/local-cli/server/util/debugger-ui/index.html
index c4f825145acbb1..320b482899363e 100644
--- a/local-cli/server/util/debugger-ui/index.html
+++ b/local-cli/server/util/debugger-ui/index.html
@@ -1,6 +1,6 @@
 <!DOCTYPE html>
 <!--
-  Copyright (c) 2015-present, Facebook, Inc.
+  Copyright (c) Facebook, Inc. and its affiliates.
 
   This source code is licensed under the MIT license found in the
   LICENSE file in the root directory of this source tree.
@@ -247,10 +247,10 @@
   }
   body.dark {
     background-color: #242424;
-    color: #666;
+    color: #afafaf;
   }
   .dark .shortcut {
-    color: #777;
+    color: #c1c1c1;
   }
   .dark a {
     color: #3b99fc;
diff --git a/local-cli/server/util/jsPackagerClient.js b/local-cli/server/util/jsPackagerClient.js
index 0052198228dddb..08e6516f5aae16 100644
--- a/local-cli/server/util/jsPackagerClient.js
+++ b/local-cli/server/util/jsPackagerClient.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/util/launchChrome.js b/local-cli/server/util/launchChrome.js
index f37f06b088c0c4..854ae20c80b805 100644
--- a/local-cli/server/util/launchChrome.js
+++ b/local-cli/server/util/launchChrome.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/util/launchEditor.js b/local-cli/server/util/launchEditor.js
index 8b9f1729e10f35..ac965b08531285 100644
--- a/local-cli/server/util/launchEditor.js
+++ b/local-cli/server/util/launchEditor.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -42,6 +42,11 @@ var COMMON_EDITORS = {
   '/Applications/WebStorm.app/Contents/MacOS/webstorm': 'webstorm',
 };
 
+// Transpiled version of: /^[\p{L}0-9/.\-_\\]+$/u
+// Non-transpiled version requires support for Unicode property regex. Allows
+// alphanumeric characters, periods, dashes, slashes, and underscores.
+const WINDOWS_FILE_NAME_WHITELIST = /^(?:[\x2D-9A-Z\\_a-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0560-\u0588\u05D0-\u05EA\u05EF-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u0860-\u086A\u08A0-\u08B4\u08B6-\u08BD\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u09FC\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16F1-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1878\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88\u1C90-\u1CBA\u1CBD-\u1CBF\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312F\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FEF\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA7B9\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA8FE\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1F\uDF2D-\uDF40\uDF42-\uDF49\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF]|\uD801[\uDC00-\uDC9D\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE35\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE4\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2\uDD00-\uDD23\uDF00-\uDF1C\uDF27\uDF30-\uDF45]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD44\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE2B\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEDE\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF50\uDF5D-\uDF61]|\uD805[\uDC00-\uDC34\uDC47-\uDC4A\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDD80-\uDDAE\uDDD8-\uDDDB\uDE00-\uDE2F\uDE44\uDE80-\uDEAA\uDF00-\uDF1A]|\uD806[\uDC00-\uDC2B\uDCA0-\uDCDF\uDCFF\uDE00\uDE0B-\uDE32\uDE3A\uDE50\uDE5C-\uDE83\uDE86-\uDE89\uDE9D\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC2E\uDC40\uDC72-\uDC8F\uDD00-\uDD06\uDD08\uDD09\uDD0B-\uDD30\uDD46\uDD60-\uDD65\uDD67\uDD68\uDD6A-\uDD89\uDD98\uDEE0-\uDEF2]|\uD808[\uDC00-\uDF99]|\uD809[\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDE40-\uDE7F\uDF00-\uDF44\uDF50\uDF93-\uDF9F\uDFE0\uDFE1]|\uD821[\uDC00-\uDFF1]|\uD822[\uDC00-\uDEF2]|\uD82C[\uDC00-\uDD1E\uDD70-\uDEFB]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD83A[\uDC00-\uDCC4\uDD00-\uDD43]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D])+$/;
+
 function addWorkspaceToArgumentsIfExists(args, workspace) {
   if (workspace) {
     args.unshift(workspace);
@@ -176,6 +181,32 @@ function launchEditor(fileName, lineNumber, projectRoots) {
   } else {
     args.push(fileName);
   }
+
+  // cmd.exe on Windows is vulnerable to RCE attacks given a file name of the
+  // form "C:\Users\myusername\Downloads\& curl 172.21.93.52". Use a whitelist
+  // to validate user-provided file names. This doesn't cover the entire range
+  // of valid file names but should cover almost all of them in practice.
+  if (
+    process.platform === 'win32' &&
+    !WINDOWS_FILE_NAME_WHITELIST.test(fileName.trim())
+  ) {
+    console.log();
+    console.log(
+      chalk.red(
+        'Could not open ' + path.basename(fileName) + ' in the editor.',
+      ),
+    );
+    console.log();
+    console.log(
+      'When running on Windows, file names are checked against a whitelist ' +
+        'to protect against remote code execution attacks. File names may ' +
+        'consist only of alphanumeric characters (all languages), periods, ' +
+        'dashes, slashes, and underscores.',
+    );
+    console.log();
+    return;
+  }
+
   console.log(
     'Opening ' + chalk.underline(fileName) + ' with ' + chalk.bold(editor),
   );
diff --git a/local-cli/server/util/messageSocket.js b/local-cli/server/util/messageSocket.js
index 87772789a348a9..a151f7916ba5f2 100644
--- a/local-cli/server/util/messageSocket.js
+++ b/local-cli/server/util/messageSocket.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/server/util/webSocketProxy.js b/local-cli/server/util/webSocketProxy.js
index d419e51589767b..097a5de53003a7 100644
--- a/local-cli/server/util/webSocketProxy.js
+++ b/local-cli/server/util/webSocketProxy.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/setup_env.bat b/local-cli/setup_env.bat
index e5c135e5abff82..68318546b76c55 100755
--- a/local-cli/setup_env.bat
+++ b/local-cli/setup_env.bat
@@ -1,4 +1,4 @@
-:: Copyright (c) 2015-present, Facebook, Inc.
+:: Copyright (c) Facebook, Inc. and its affiliates.
 ::
 :: This source code is licensed under the MIT license found in the
 :: LICENSE file in the root directory of this source tree.
diff --git a/local-cli/setup_env.sh b/local-cli/setup_env.sh
index 0087df50c04aa4..eaf581048964b4 100755
--- a/local-cli/setup_env.sh
+++ b/local-cli/setup_env.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Copyright (c) 2015-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
diff --git a/local-cli/templates/HelloNavigation/App.js b/local-cli/templates/HelloNavigation/App.js
deleted file mode 100644
index 4ccc87f1791026..00000000000000
--- a/local-cli/templates/HelloNavigation/App.js
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * This is an example React Native app demonstrates ListViews, text input and
- * navigation between a few screens.
- * https://github.com/facebook/react-native
- *
- * @format
- */
-
-import React, {Component} from 'react';
-import {StackNavigator} from 'react-navigation';
-
-import HomeScreenTabNavigator from './views/HomeScreenTabNavigator';
-import ChatScreen from './views/chat/ChatScreen';
-
-/**
- * Top-level navigator. Renders the application UI.
- */
-const App = StackNavigator({
-  Home: {
-    screen: HomeScreenTabNavigator,
-  },
-  Chat: {
-    screen: ChatScreen,
-  },
-});
-
-export default App;
diff --git a/local-cli/templates/HelloNavigation/README.md b/local-cli/templates/HelloNavigation/README.md
deleted file mode 100644
index 2c3d94b4c9dd67..00000000000000
--- a/local-cli/templates/HelloNavigation/README.md
+++ /dev/null
@@ -1,41 +0,0 @@
-# App template for new React Native apps
-
-This is a simple React Native app template which demonstrates a few basics concepts such as navigation between a few screens, FlatLists, and handling text input.
-
-<img src="https://cloud.githubusercontent.com/assets/346214/22697898/ced66f52-ed4a-11e6-9b90-df6daef43199.gif" alt="Android Example" height="800" style="float: left"/>
-
-<img src="https://cloud.githubusercontent.com/assets/346214/22697901/cfeab3e4-ed4a-11e6-8552-d76585317ac2.gif" alt="iOS Example" height="800"/>
-
-## Purpose
-
-The idea is to make it easier for people to get started with React Native. Currently `react-native init` creates a very simple app that contains one screen with static text. Everyone new to React Native then needs to figure out how to do very basic things such as:
-- Rendering a list of items fetched from a server
-- Navigating between screens
-- Handling text input and the software keyboard
-
-This app serves as a template used by `react-native init` so it is easier for anyone to get up and running quickly by having an app with a few screens and a FlatList ready to go.
-
-### Best practices
-
-Another purpose of this app is to define best practices such as the folder structure of a standalone React Native app and naming conventions.
-
-## Not using Redux
-
-This template intentionally doesn't use Redux. After discussing with a few people who have experience using Redux we concluded that adding Redux to this app targeted at beginners would make the code more confusing, and wouldn't clearly show the benefits of Redux (because the app is too small). There are already a few concepts to grasp - the React component lifecycle, rendering lists, using async / await, handling the software keyboard. We thought that's the maximum amount of things to learn at once. It's better for everyone to see patterns in their codebase as the app grows and decide for themselves whether and when they need Redux. See also the post [You Might Not Need Redux](https://medium.com/@dan_abramov/you-might-not-need-redux-be46360cf367#.f3q7kq4b3) by [Dan Abramov](https://twitter.com/dan_abramov).
-
-## Not using Flow (for now)
-
-Many people are new to React Native, some are new to ES6 and most people will be new to Flow. Therefore we didn't want to introduce all these concepts all at once in a single codebase. However, it might make sense to later introduce a separate version of this template that uses Flow annotations.
-
-## Provide feedback
-
-We need your feedback. Do you have a lot of experience building React Native apps? If so, please carefully read the code of the template and if you think something should be done differently, use issues in the repo [mkonicek/AppTemplateFeedback](https://github.com/mkonicek/AppTemplateFeedback) to discuss what should be done differently.
-
-## How to use the template
-
-```
-$ react-native init MyApp --template navigation
-$ cd MyApp
-$ react-native run-android
-$ react-native run-ios
-```
diff --git a/local-cli/templates/HelloNavigation/components/KeyboardSpacer.js b/local-cli/templates/HelloNavigation/components/KeyboardSpacer.js
deleted file mode 100644
index 9b73a41bab2dd4..00000000000000
--- a/local-cli/templates/HelloNavigation/components/KeyboardSpacer.js
+++ /dev/null
@@ -1,120 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- */
-
-'use strict';
-
-/* @flow */
-
-import React, {Component} from 'react';
-import PropTypes from 'prop-types';
-import {Platform, View, Keyboard, LayoutAnimation} from 'react-native';
-
-type Props = {
-  offset?: number,
-};
-
-type State = {
-  keyboardHeight: number,
-};
-
-// Consider contributing this to the popular library:
-// https://github.com/Andr3wHur5t/react-native-keyboard-spacer
-
-/**
- * On iOS, the software keyboard covers the screen by default.
- * This is not desirable if there are TextInputs near the bottom of the screen -
- * they would be covered by the keyboard and the user cannot see what they
- * are typing.
- * To get around this problem, place a `<KeyboardSpacer />` at the bottom
- * of the screen, after your TextInputs. The keyboard spacer has size 0 and
- * when the keyboard is shown it will grow to the same size as the keyboard,
- * shifting all views above it and therefore making them visible.
- *
- * On Android, this component is not needed because resizing the UI when
- * the keyboard is shown is supported by the OS.
- * Simply set the `android:windowSoftInputMode="adjustResize"` attribute
- * on the <activity> element in your AndroidManifest.xml.
- *
- * How is this different from KeyboardAvoidingView?
- * The KeyboardAvoidingView doesn't work when used together with
- * a ScrollView/ListView.
- */
-const KeyboardSpacer = () =>
-  Platform.OS === 'ios' ? <KeyboardSpacerIOS /> : null;
-
-class KeyboardSpacerIOS extends Component<Props, State> {
-  static propTypes = {
-    offset: PropTypes.number,
-  };
-
-  static defaultProps = {
-    offset: 0,
-  };
-
-  state: State = {
-    keyboardHeight: 0,
-  };
-
-  UNSAFE_componentWillMount() {
-    this._registerEvents();
-  }
-
-  componentWillUnmount() {
-    this._unRegisterEvents();
-  }
-
-  _keyboardWillShowSubscription: {+remove: Function};
-  _keyboardWillHideSubscription: {+remove: Function};
-
-  _registerEvents = () => {
-    this._keyboardWillShowSubscription = Keyboard.addListener(
-      'keyboardWillShow',
-      this._keyboardWillShow,
-    );
-    this._keyboardWillHideSubscription = Keyboard.addListener(
-      'keyboardWillHide',
-      this._keyboardWillHide,
-    );
-  };
-
-  _unRegisterEvents = () => {
-    this._keyboardWillShowSubscription.remove();
-    this._keyboardWillHideSubscription.remove();
-  };
-
-  _configureLayoutAnimation = () => {
-    // Any duration is OK here. The `type: 'keyboard defines the animation.
-    LayoutAnimation.configureNext({
-      duration: 100,
-      update: {
-        type: 'keyboard',
-      },
-    });
-  };
-
-  _keyboardWillShow = (e: any) => {
-    this._configureLayoutAnimation();
-    this.setState({
-      keyboardHeight: e.endCoordinates.height - (this.props.offset || 0),
-    });
-  };
-
-  _keyboardWillHide = () => {
-    this._configureLayoutAnimation();
-    this.setState({
-      keyboardHeight: 0,
-    });
-  };
-
-  render() {
-    return <View style={{height: this.state.keyboardHeight}} />;
-  }
-}
-
-export default KeyboardSpacer;
diff --git a/local-cli/templates/HelloNavigation/components/ListItem.js b/local-cli/templates/HelloNavigation/components/ListItem.js
deleted file mode 100644
index c93e819b5c146d..00000000000000
--- a/local-cli/templates/HelloNavigation/components/ListItem.js
+++ /dev/null
@@ -1,56 +0,0 @@
-/** @format */
-
-'use strict';
-
-import React, {Component} from 'react';
-import {
-  Platform,
-  StyleSheet,
-  Text,
-  TouchableHighlight,
-  TouchableNativeFeedback,
-  View,
-} from 'react-native';
-
-/**
- * Renders the right type of Touchable for the list item, based on platform.
- */
-const Touchable = ({onPress, children}) => {
-  const child = React.Children.only(children);
-  if (Platform.OS === 'android') {
-    return (
-      <TouchableNativeFeedback onPress={onPress}>
-        {child}
-      </TouchableNativeFeedback>
-    );
-  } else {
-    return (
-      <TouchableHighlight onPress={onPress} underlayColor="#ddd">
-        {child}
-      </TouchableHighlight>
-    );
-  }
-};
-
-const ListItem = ({label, onPress}) => (
-  <Touchable onPress={onPress}>
-    <View style={styles.item}>
-      <Text style={styles.label}>{label}</Text>
-    </View>
-  </Touchable>
-);
-
-const styles = StyleSheet.create({
-  item: {
-    height: 48,
-    justifyContent: 'center',
-    paddingLeft: 12,
-    borderBottomWidth: StyleSheet.hairlineWidth,
-    borderBottomColor: '#ddd',
-  },
-  label: {
-    fontSize: 16,
-  },
-});
-
-export default ListItem;
diff --git a/local-cli/templates/HelloNavigation/dependencies.json b/local-cli/templates/HelloNavigation/dependencies.json
deleted file mode 100644
index 2317f38b79c837..00000000000000
--- a/local-cli/templates/HelloNavigation/dependencies.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "react-navigation": "1.0.0-beta.11"
-}
diff --git a/local-cli/templates/HelloNavigation/lib/Backend.js b/local-cli/templates/HelloNavigation/lib/Backend.js
deleted file mode 100644
index a85f0ae753fe15..00000000000000
--- a/local-cli/templates/HelloNavigation/lib/Backend.js
+++ /dev/null
@@ -1,117 +0,0 @@
-/** @format */
-
-'use strict';
-
-// This file just a dummy example of a HTTP API to talk to the backend.
-// The state of the "database" that would normally live on the server
-// is simply held here in memory.
-
-const backendStateForLoggedInPerson = {
-  chats: [
-    {
-      name: 'Claire',
-      messages: [
-        {
-          name: 'Claire',
-          text: 'I ❤️ React Native!',
-        },
-      ],
-    },
-    {
-      name: 'John',
-      messages: [
-        {
-          name: 'John',
-          text: 'I ❤️ React Native!',
-        },
-      ],
-    },
-  ],
-};
-
-/**
- * Randomly simulate network failures.
- * It is useful to enable this during development to make sure our app works
- * in real-world conditions.
- */
-function isNetworkFailure() {
-  const chanceOfFailure = 0; // 0..1
-  return Math.random() < chanceOfFailure;
-}
-
-/**
- * Helper for the other functions in this file.
- * Simulates a short delay and then returns a provided value or failure.
- * This is just a dummy example. Normally we'd make a HTTP request,
- * see http://facebook.github.io/react-native/docs/network.html
- */
-function _makeSimulatedNetworkRequest(getValue) {
-  const durationMs = 400;
-  return new Promise(function(resolve, reject) {
-    setTimeout(function() {
-      if (isNetworkFailure()) {
-        reject(new Error('Network failure'));
-      } else {
-        getValue(resolve, reject);
-      }
-    }, durationMs);
-  });
-}
-
-/**
- * Fetch a list of all chats for the logged in person.
- */
-async function fetchChatList() {
-  return _makeSimulatedNetworkRequest((resolve, reject) => {
-    resolve(backendStateForLoggedInPerson.chats.map(chat => chat.name));
-  });
-}
-
-/**
- * Fetch a single chat.
- */
-async function fetchChat(name) {
-  return _makeSimulatedNetworkRequest((resolve, reject) => {
-    resolve(
-      backendStateForLoggedInPerson.chats.find(chat => chat.name === name),
-    );
-  });
-}
-
-/**
- * Send given message to given person.
- */
-async function sendMessage({name, message}) {
-  return _makeSimulatedNetworkRequest((resolve, reject) => {
-    const chatForName = backendStateForLoggedInPerson.chats.find(
-      chat => chat.name === name,
-    );
-    if (chatForName) {
-      chatForName.messages.push({
-        name: 'Me',
-        text: message,
-      });
-      resolve();
-    } else {
-      reject(new Error('Uknown person: ' + name));
-    }
-  });
-}
-
-const Backend = {
-  fetchChatList,
-  fetchChat,
-  sendMessage,
-};
-
-export default Backend;
-
-// In case you are looking into using Redux for state management,
-// this is how network requests are done in the f8 app which uses Redux:
-// - To load some data, a Component fires a Redux action, such as loadSession()
-// - That action makes the HTTP requests and then dispatches a redux action
-//   {type: 'LOADED_SESSIONS', results}
-// - Then all reducers get called and one of them updates a part of the application
-//   state by storing the results
-// - Redux re-renders the connected Components
-// See https://github.com/fbsamples/f8app/search?utf8=%E2%9C%93&q=loaded_sessions
diff --git a/local-cli/templates/HelloNavigation/views/HomeScreenTabNavigator.js b/local-cli/templates/HelloNavigation/views/HomeScreenTabNavigator.js
deleted file mode 100644
index 09e411a471a948..00000000000000
--- a/local-cli/templates/HelloNavigation/views/HomeScreenTabNavigator.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/** @format */
-
-import {TabNavigator} from 'react-navigation';
-
-import ChatListScreen from './chat/ChatListScreen';
-import WelcomeScreen from './welcome/WelcomeScreen';
-
-/**
- * Screen with tabs shown on app startup.
- */
-const HomeScreenTabNavigator = TabNavigator({
-  Welcome: {
-    screen: WelcomeScreen,
-  },
-  Chats: {
-    screen: ChatListScreen,
-  },
-});
-
-export default HomeScreenTabNavigator;
diff --git a/local-cli/templates/HelloNavigation/views/chat/ChatListScreen.js b/local-cli/templates/HelloNavigation/views/chat/ChatListScreen.js
deleted file mode 100644
index 121deb36d3370a..00000000000000
--- a/local-cli/templates/HelloNavigation/views/chat/ChatListScreen.js
+++ /dev/null
@@ -1,91 +0,0 @@
-/** @format */
-
-import React, {Component} from 'react';
-import {
-  ActivityIndicator,
-  Image,
-  FlatList,
-  Platform,
-  StyleSheet,
-  View,
-} from 'react-native';
-import ListItem from '../../components/ListItem';
-import Backend from '../../lib/Backend';
-
-export default class ChatListScreen extends Component {
-  static navigationOptions = {
-    title: 'Chats',
-    header: Platform.OS === 'ios' ? undefined : null,
-    tabBarIcon: ({tintColor}) => (
-      <Image
-        // Using react-native-vector-icons works here too
-        source={require('./chat-icon.png')}
-        style={[styles.icon, {tintColor: tintColor}]}
-      />
-    ),
-  };
-
-  constructor(props) {
-    super(props);
-    this.state = {
-      isLoading: true,
-    };
-  }
-
-  async componentDidMount() {
-    const chatList = await Backend.fetchChatList();
-    this.setState(prevState => ({
-      chatList,
-      isLoading: false,
-    }));
-  }
-
-  // Binding the function so it can be passed to FlatList below
-  // and 'this' works properly inside renderItem
-  renderItem = ({item}) => {
-    return (
-      <ListItem
-        label={item}
-        onPress={() => {
-          // Start fetching in parallel with animating
-          this.props.navigation.navigate('Chat', {
-            name: item,
-          });
-        }}
-      />
-    );
-  };
-
-  render() {
-    if (this.state.isLoading) {
-      return (
-        <View style={styles.loadingScreen}>
-          <ActivityIndicator />
-        </View>
-      );
-    }
-    return (
-      <FlatList
-        data={this.state.chatList}
-        renderItem={this.renderItem}
-        keyExtractor={(item, index) => index}
-        style={styles.listView}
-      />
-    );
-  }
-}
-
-const styles = StyleSheet.create({
-  loadingScreen: {
-    backgroundColor: 'white',
-    paddingTop: 8,
-    flex: 1,
-  },
-  listView: {
-    backgroundColor: 'white',
-  },
-  icon: {
-    width: 30,
-    height: 26,
-  },
-});
diff --git a/local-cli/templates/HelloNavigation/views/chat/ChatScreen.js b/local-cli/templates/HelloNavigation/views/chat/ChatScreen.js
deleted file mode 100644
index 0d1e322d151c39..00000000000000
--- a/local-cli/templates/HelloNavigation/views/chat/ChatScreen.js
+++ /dev/null
@@ -1,170 +0,0 @@
-/** @format */
-
-import React, {Component} from 'react';
-import {
-  ActivityIndicator,
-  Button,
-  FlatList,
-  StyleSheet,
-  Text,
-  TextInput,
-  View,
-} from 'react-native';
-import KeyboardSpacer from '../../components/KeyboardSpacer';
-import Backend from '../../lib/Backend';
-
-export default class ChatScreen extends Component {
-  static navigationOptions = ({navigation}) => ({
-    title: `Chat with ${navigation.state.params.name}`,
-  });
-  constructor(props) {
-    super(props);
-    this.state = {
-      messages: [],
-      myMessage: '',
-      isLoading: true,
-    };
-  }
-
-  async componentDidMount() {
-    let chat;
-    try {
-      chat = await Backend.fetchChat(this.props.navigation.state.params.name);
-    } catch (err) {
-      // Here we would handle the fact the request failed, e.g.
-      // set state to display "Messages could not be loaded".
-      // We should also check network connection first before making any
-      // network requests - maybe we're offline? See React Native's NetInfo
-      // module.
-      this.setState({
-        isLoading: false,
-      });
-      return;
-    }
-    this.setState(prevState => ({
-      messages: chat.messages,
-      isLoading: false,
-    }));
-  }
-
-  onAddMessage = async () => {
-    // Optimistically update the UI
-    this.addMessageLocal();
-    // Send the request
-    try {
-      await Backend.sendMessage({
-        name: this.props.navigation.state.params.name,
-        // TODO Is reading state like this outside of setState OK?
-        // Can it contain a stale value?
-        message: this.state.myMessage,
-      });
-    } catch (err) {
-      // Here we would handle the request failure, e.g. call setState
-      // to display a visual hint showing the message could not be sent.
-    }
-  };
-
-  addMessageLocal = () => {
-    this.setState(prevState => {
-      if (!prevState.myMessage) {
-        return prevState;
-      }
-      const messages = [
-        ...prevState.messages,
-        {
-          name: 'Me',
-          text: prevState.myMessage,
-        },
-      ];
-      return {
-        messages: messages,
-        myMessage: '',
-      };
-    });
-    this.textInput.clear();
-  };
-
-  onMyMessageChange = event => {
-    this.setState({myMessage: event.nativeEvent.text});
-  };
-
-  renderItem = ({item}) => (
-    <View style={styles.bubble}>
-      <Text style={styles.name}>{item.name}</Text>
-      <Text>{item.text}</Text>
-    </View>
-  );
-
-  render() {
-    if (this.state.isLoading) {
-      return (
-        <View style={styles.container}>
-          <ActivityIndicator />
-        </View>
-      );
-    }
-    return (
-      <View style={styles.container}>
-        <FlatList
-          data={this.state.messages}
-          renderItem={this.renderItem}
-          keyExtractor={(item, index) => index}
-          style={styles.listView}
-        />
-
-        <View style={styles.composer}>
-          <TextInput
-            ref={textInput => {
-              this.textInput = textInput;
-            }}
-            style={styles.textInput}
-            placeholder="Type a message..."
-            text={this.state.myMessage}
-            onSubmitEditing={this.onAddMessage}
-            onChange={this.onMyMessageChange}
-          />
-          {this.state.myMessage !== '' && (
-            <Button title="Send" onPress={this.onAddMessage} />
-          )}
-        </View>
-        <KeyboardSpacer />
-      </View>
-    );
-  }
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    padding: 8,
-    backgroundColor: 'white',
-  },
-  listView: {
-    flex: 1,
-    alignSelf: 'stretch',
-  },
-  bubble: {
-    alignSelf: 'flex-end',
-    backgroundColor: '#d6f3fc',
-    padding: 12,
-    borderRadius: 4,
-    marginBottom: 4,
-  },
-  name: {
-    fontWeight: 'bold',
-  },
-  composer: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    height: 36,
-  },
-  textInput: {
-    flex: 1,
-    borderColor: '#ddd',
-    borderWidth: 1,
-    padding: 4,
-    height: 30,
-    fontSize: 13,
-    marginRight: 8,
-  },
-});
diff --git a/local-cli/templates/HelloNavigation/views/chat/chat-icon.png b/local-cli/templates/HelloNavigation/views/chat/chat-icon.png
deleted file mode 100644
index 07c56c71da4efd..00000000000000
Binary files a/local-cli/templates/HelloNavigation/views/chat/chat-icon.png and /dev/null differ
diff --git a/local-cli/templates/HelloNavigation/views/welcome/WelcomeScreen.js b/local-cli/templates/HelloNavigation/views/welcome/WelcomeScreen.js
deleted file mode 100644
index 942a8fbae42de8..00000000000000
--- a/local-cli/templates/HelloNavigation/views/welcome/WelcomeScreen.js
+++ /dev/null
@@ -1,33 +0,0 @@
-/** @format */
-
-import React, {Component} from 'react';
-import {Image, Platform, StyleSheet} from 'react-native';
-
-import ListItem from '../../components/ListItem';
-import WelcomeText from './WelcomeText';
-
-export default class WelcomeScreen extends Component {
-  static navigationOptions = {
-    title: 'Welcome',
-    // You can now set header: null on any component to hide the header
-    header: Platform.OS === 'ios' ? undefined : null,
-    tabBarIcon: ({tintColor}) => (
-      <Image
-        // Using react-native-vector-icons works here too
-        source={require('./welcome-icon.png')}
-        style={[styles.icon, {tintColor: tintColor}]}
-      />
-    ),
-  };
-
-  render() {
-    return <WelcomeText />;
-  }
-}
-
-const styles = StyleSheet.create({
-  icon: {
-    width: 30,
-    height: 26,
-  },
-});
diff --git a/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.android.js b/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.android.js
deleted file mode 100644
index 9f185d56cc6c7b..00000000000000
--- a/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.android.js
+++ /dev/null
@@ -1,46 +0,0 @@
-/** @format */
-
-import React, {Component} from 'react';
-import {StyleSheet, Text, View} from 'react-native';
-
-export default class WelcomeText extends Component {
-  render() {
-    return (
-      <View style={styles.container}>
-        <Text style={styles.welcome}>Welcome to React Native!</Text>
-        <Text style={styles.instructions}>
-          This app shows the basics of navigating between a few screens, working
-          with ListView and handling text input.
-        </Text>
-        <Text style={styles.instructions}>
-          Modify any files to get started. For example try changing the file
-          views/welcome/WelcomeText.android.js.
-        </Text>
-        <Text style={styles.instructions}>
-          Double tap R on your keyboard to reload,{'\n'}
-          Shake or press menu button for dev menu.
-        </Text>
-      </View>
-    );
-  }
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    justifyContent: 'center',
-    alignItems: 'center',
-    backgroundColor: 'white',
-    padding: 20,
-  },
-  welcome: {
-    fontSize: 20,
-    textAlign: 'center',
-    margin: 16,
-  },
-  instructions: {
-    textAlign: 'center',
-    color: '#333333',
-    marginBottom: 12,
-  },
-});
diff --git a/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.ios.js b/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.ios.js
deleted file mode 100644
index 673e6889bbba8c..00000000000000
--- a/local-cli/templates/HelloNavigation/views/welcome/WelcomeText.ios.js
+++ /dev/null
@@ -1,47 +0,0 @@
-/** @format */
-
-import React, {Component} from 'react';
-import {StyleSheet, Text, View} from 'react-native';
-
-export default class WelcomeText extends Component {
-  render() {
-    return (
-      <View style={styles.container}>
-        <Text style={styles.welcome}>Welcome to React Native!</Text>
-        <Text style={styles.instructions}>
-          This app shows the basics of navigating between a few screens, working
-          with ListView and handling text input.
-        </Text>
-        <Text style={styles.instructions}>
-          Modify any files to get started. For example try changing the file{
-            '\n'
-          }views/welcome/WelcomeText.ios.js.
-        </Text>
-        <Text style={styles.instructions}>
-          Press Cmd+R to reload,{'\n'}
-          Cmd+D or shake for dev menu.
-        </Text>
-      </View>
-    );
-  }
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    justifyContent: 'center',
-    alignItems: 'center',
-    backgroundColor: 'white',
-    padding: 20,
-  },
-  welcome: {
-    fontSize: 20,
-    textAlign: 'center',
-    margin: 16,
-  },
-  instructions: {
-    textAlign: 'center',
-    color: '#333333',
-    marginBottom: 12,
-  },
-});
diff --git a/local-cli/templates/HelloNavigation/views/welcome/welcome-icon.png b/local-cli/templates/HelloNavigation/views/welcome/welcome-icon.png
deleted file mode 100644
index 16252eb4d38628..00000000000000
Binary files a/local-cli/templates/HelloNavigation/views/welcome/welcome-icon.png and /dev/null differ
diff --git a/local-cli/templates/HelloWorld/App.js b/local-cli/templates/HelloWorld/App.js
index 171d0f0f4a8532..bb48232958e854 100644
--- a/local-cli/templates/HelloWorld/App.js
+++ b/local-cli/templates/HelloWorld/App.js
@@ -4,6 +4,7 @@
  *
  * @format
  * @flow
+ * @lint-ignore-every XPLATJSCOPYRIGHT1
  */
 
 import React, {Component} from 'react';
diff --git a/local-cli/templates/HelloWorld/__tests__/App.js b/local-cli/templates/HelloWorld/__tests__/App.js
index 2d5bbce8a44a65..a79ec3d587efc7 100644
--- a/local-cli/templates/HelloWorld/__tests__/App.js
+++ b/local-cli/templates/HelloWorld/__tests__/App.js
@@ -1,4 +1,7 @@
-/** @format */
+/**
+ * @format
+ * @lint-ignore-every XPLATJSCOPYRIGHT1
+ */
 
 import 'react-native';
 import React from 'react';
@@ -8,5 +11,5 @@ import App from '../App';
 import renderer from 'react-test-renderer';
 
 it('renders correctly', () => {
-  const tree = renderer.create(<App />);
+  renderer.create(<App />);
 });
diff --git a/local-cli/templates/HelloWorld/_babel.config.js b/local-cli/templates/HelloWorld/_babel.config.js
new file mode 100644
index 00000000000000..b66a04a3617e7c
--- /dev/null
+++ b/local-cli/templates/HelloWorld/_babel.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  presets: ["module:metro-react-native-babel-preset"]
+}
diff --git a/local-cli/templates/HelloWorld/_flowconfig b/local-cli/templates/HelloWorld/_flowconfig
index 1043c82d706e48..9bded78be9b0a0 100644
--- a/local-cli/templates/HelloWorld/_flowconfig
+++ b/local-cli/templates/HelloWorld/_flowconfig
@@ -67,4 +67,4 @@ suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
 suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
 
 [version]
-^0.78.0
+^0.86.0
diff --git a/local-cli/templates/HelloWorld/android/app/BUCK b/local-cli/templates/HelloWorld/android/app/_BUCK
similarity index 73%
rename from local-cli/templates/HelloWorld/android/app/BUCK
rename to local-cli/templates/HelloWorld/android/app/_BUCK
index e2f125692c4893..0e779048347e02 100644
--- a/local-cli/templates/HelloWorld/android/app/BUCK
+++ b/local-cli/templates/HelloWorld/android/app/_BUCK
@@ -8,23 +8,13 @@
 # - `buck install -r android/app` - compile, install and run application
 #
 
+load(":build_defs.bzl", "create_aar_targets", "create_jar_targets")
+
 lib_deps = []
 
-for jarfile in glob(['libs/*.jar']):
-  name = 'jars__' + jarfile[jarfile.rindex('/') + 1: jarfile.rindex('.jar')]
-  lib_deps.append(':' + name)
-  prebuilt_jar(
-    name = name,
-    binary_jar = jarfile,
-  )
+create_aar_targets(glob(["libs/*.aar"]))
 
-for aarfile in glob(['libs/*.aar']):
-  name = 'aars__' + aarfile[aarfile.rindex('/') + 1: aarfile.rindex('.aar')]
-  lib_deps.append(':' + name)
-  android_prebuilt_aar(
-    name = name,
-    aar = aarfile,
-  )
+create_jar_targets(glob(["libs/*.jar"]))
 
 android_library(
     name = "all-libs",
diff --git a/local-cli/templates/HelloWorld/android/app/build.gradle b/local-cli/templates/HelloWorld/android/app/build.gradle
index 793eae821101a8..a123b6cfb34a73 100644
--- a/local-cli/templates/HelloWorld/android/app/build.gradle
+++ b/local-cli/templates/HelloWorld/android/app/build.gradle
@@ -103,16 +103,13 @@ android {
         targetSdkVersion rootProject.ext.targetSdkVersion
         versionCode 1
         versionName "1.0"
-        ndk {
-            abiFilters "armeabi-v7a", "x86"
-        }
     }
     splits {
         abi {
             reset()
             enable enableSeparateBuildPerCPUArchitecture
             universalApk false  // If true, also generate a universal APK
-            include "armeabi-v7a", "x86"
+            include "armeabi-v7a", "x86", "arm64-v8a"
         }
     }
     buildTypes {
@@ -126,7 +123,7 @@ android {
         variant.outputs.each { output ->
             // For each separate APK per architecture, set a unique version code as described here:
             // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
-            def versionCodes = ["armeabi-v7a":1, "x86":2]
+            def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a": 3]
             def abi = output.getFilter(OutputFile.ABI)
             if (abi != null) {  // null for the universal-debug, universal-release variants
                 output.versionCodeOverride =
diff --git a/local-cli/templates/HelloWorld/android/app/build_defs.bzl b/local-cli/templates/HelloWorld/android/app/build_defs.bzl
new file mode 100644
index 00000000000000..fff270f8d1d484
--- /dev/null
+++ b/local-cli/templates/HelloWorld/android/app/build_defs.bzl
@@ -0,0 +1,19 @@
+"""Helper definitions to glob .aar and .jar targets"""
+
+def create_aar_targets(aarfiles):
+    for aarfile in aarfiles:
+        name = "aars__" + aarfile[aarfile.rindex("/") + 1:aarfile.rindex(".aar")]
+        lib_deps.append(":" + name)
+        android_prebuilt_aar(
+            name = name,
+            aar = aarfile,
+        )
+
+def create_jar_targets(jarfiles):
+    for jarfile in jarfiles:
+        name = "jars__" + jarfile[jarfile.rindex("/") + 1:jarfile.rindex(".jar")]
+        lib_deps.append(":" + name)
+        prebuilt_jar(
+            name = name,
+            binary_jar = jarfile,
+        )
diff --git a/local-cli/templates/HelloWorld/android/app/src/main/AndroidManifest.xml b/local-cli/templates/HelloWorld/android/app/src/main/AndroidManifest.xml
index 25d166dccedc7b..e5e6330fbdf64d 100644
--- a/local-cli/templates/HelloWorld/android/app/src/main/AndroidManifest.xml
+++ b/local-cli/templates/HelloWorld/android/app/src/main/AndroidManifest.xml
@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.helloworld">
+  package="com.helloworld">
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
@@ -8,6 +8,7 @@
       android:name=".MainApplication"
       android:label="@string/app_name"
       android:icon="@mipmap/ic_launcher"
+      android:roundIcon="@mipmap/ic_launcher_round"
       android:allowBackup="false"
       android:theme="@style/AppTheme">
       <activity
diff --git a/local-cli/templates/HelloWorld/android/build.gradle b/local-cli/templates/HelloWorld/android/build.gradle
index 85d8f2f81e2bd3..3231b29ea83e52 100644
--- a/local-cli/templates/HelloWorld/android/build.gradle
+++ b/local-cli/templates/HelloWorld/android/build.gradle
@@ -2,18 +2,18 @@
 
 buildscript {
     ext {
-        buildToolsVersion = "27.0.3"
+        buildToolsVersion = "28.0.2"
         minSdkVersion = 16
-        compileSdkVersion = 27
-        targetSdkVersion = 26
-        supportLibVersion = "27.1.1"
+        compileSdkVersion = 28
+        targetSdkVersion = 27
+        supportLibVersion = "28.0.0"
     }
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.4'
+        classpath 'com.android.tools.build:gradle:3.2.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -23,17 +23,17 @@ buildscript {
 allprojects {
     repositories {
         mavenLocal()
+        google()
         jcenter()
         maven {
             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
             url "$rootDir/../node_modules/react-native/android"
         }
-        google()
     }
 }
 
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '4.4'
+    gradleVersion = '4.7'
     distributionUrl = distributionUrl.replace("bin", "all")
 }
diff --git a/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties b/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties
index b6517bb1d16502..73bb13d55618b2 100644
--- a/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties
+++ b/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip
diff --git a/local-cli/templates/HelloWorld/android/keystores/BUCK b/local-cli/templates/HelloWorld/android/keystores/_BUCK
similarity index 100%
rename from local-cli/templates/HelloWorld/android/keystores/BUCK
rename to local-cli/templates/HelloWorld/android/keystores/_BUCK
diff --git a/local-cli/templates/HelloWorld/index.js b/local-cli/templates/HelloWorld/index.js
index 802b4350d6f3c9..3ac66525d84311 100644
--- a/local-cli/templates/HelloWorld/index.js
+++ b/local-cli/templates/HelloWorld/index.js
@@ -1,4 +1,7 @@
-/** @format */
+/**
+ * @format
+ * @lint-ignore-every XPLATJSCOPYRIGHT1
+ */
 
 import {AppRegistry} from 'react-native';
 import App from './App';
diff --git a/local-cli/templates/HelloWorld/ios/HelloWorld.xcodeproj/project.pbxproj b/local-cli/templates/HelloWorld/ios/HelloWorld.xcodeproj/project.pbxproj
index 15cf73e72a098a..975ce5700159f2 100644
--- a/local-cli/templates/HelloWorld/ios/HelloWorld.xcodeproj/project.pbxproj
+++ b/local-cli/templates/HelloWorld/ios/HelloWorld.xcodeproj/project.pbxproj
@@ -38,6 +38,8 @@
 		2DF0FFEE2056DD460020B375 /* libReact.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 3DAD3EA31DF850E9000B6D8A /* libReact.a */; };
 		832341BD1AAA6AB300B99B32 /* libRCTText.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 832341B51AAA6A8300B99B32 /* libRCTText.a */; };
 		ADBDB9381DFEBF1600ED6528 /* libRCTBlob.a in Frameworks */ = {isa = PBXBuildFile; fileRef = ADBDB9271DFEBF0700ED6528 /* libRCTBlob.a */; };
+		ED297163215061F000B7C4FE /* JavaScriptCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = ED297162215061F000B7C4FE /* JavaScriptCore.framework */; };
+		ED2971652150620600B7C4FE /* JavaScriptCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = ED2971642150620600B7C4FE /* JavaScriptCore.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -343,6 +345,8 @@
 		78C398B01ACF4ADC00677621 /* RCTLinking.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = RCTLinking.xcodeproj; path = "../node_modules/react-native/Libraries/LinkingIOS/RCTLinking.xcodeproj"; sourceTree = "<group>"; };
 		832341B01AAA6A8300B99B32 /* RCTText.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = RCTText.xcodeproj; path = "../node_modules/react-native/Libraries/Text/RCTText.xcodeproj"; sourceTree = "<group>"; };
 		ADBDB91F1DFEBF0600ED6528 /* RCTBlob.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = RCTBlob.xcodeproj; path = "../node_modules/react-native/Libraries/Blob/RCTBlob.xcodeproj"; sourceTree = "<group>"; };
+		ED297162215061F000B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = System/Library/Frameworks/JavaScriptCore.framework; sourceTree = SDKROOT; };
+		ED2971642150620600B7C4FE /* JavaScriptCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = JavaScriptCore.framework; path = Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS12.0.sdk/System/Library/Frameworks/JavaScriptCore.framework; sourceTree = DEVELOPER_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -358,6 +362,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				ED297163215061F000B7C4FE /* JavaScriptCore.framework in Frameworks */,
 				ADBDB9381DFEBF1600ED6528 /* libRCTBlob.a in Frameworks */,
 				11D1A2F320CAFA9E000508D9 /* libRCTAnimation.a in Frameworks */,
 				146834051AC3E58100842450 /* libReact.a in Frameworks */,
@@ -377,6 +382,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				ED2971652150620600B7C4FE /* JavaScriptCore.framework in Frameworks */,
 				2D16E6881FA4F8E400B85C8A /* libReact.a in Frameworks */,
 				2D02E4C21E0B4AEC006451C7 /* libRCTAnimation.a in Frameworks */,
 				2D02E4C31E0B4AEC006451C7 /* libRCTImage-tvOS.a in Frameworks */,
@@ -518,6 +524,8 @@
 		2D16E6871FA4F8E400B85C8A /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				ED297162215061F000B7C4FE /* JavaScriptCore.framework */,
+				ED2971642150620600B7C4FE /* JavaScriptCore.framework */,
 				2D16E6891FA4F8E400B85C8A /* libReact.a */,
 			);
 			name = Frameworks;
diff --git a/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.h b/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.h
index d4f2580b1ea1b8..4b5644f21d2c18 100644
--- a/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.h
+++ b/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.h
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.m b/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.m
index 23a3b137c46c99..d4d87a689fb567 100644
--- a/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.m
+++ b/local-cli/templates/HelloWorld/ios/HelloWorld/AppDelegate.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -22,7 +22,7 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
                                                       moduleName:@"HelloWorld"
                                                initialProperties:nil
                                                    launchOptions:launchOptions];
-  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];
+  rootView.backgroundColor = [UIColor blackColor];
 
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
   UIViewController *rootViewController = [UIViewController new];
diff --git a/local-cli/templates/HelloWorld/ios/HelloWorld/main.m b/local-cli/templates/HelloWorld/ios/HelloWorld/main.m
index c73e006253a31d..c316cf816e736a 100644
--- a/local-cli/templates/HelloWorld/ios/HelloWorld/main.m
+++ b/local-cli/templates/HelloWorld/ios/HelloWorld/main.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/templates/HelloWorld/ios/HelloWorldTests/HelloWorldTests.m b/local-cli/templates/HelloWorld/ios/HelloWorldTests/HelloWorldTests.m
index 45fba113383af7..e9db2f118ab97e 100644
--- a/local-cli/templates/HelloWorld/ios/HelloWorldTests/HelloWorldTests.m
+++ b/local-cli/templates/HelloWorld/ios/HelloWorldTests/HelloWorldTests.m
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/upgrade/upgrade.js b/local-cli/upgrade/upgrade.js
index f433961ebe59b3..202afe52cf42f5 100644
--- a/local-cli/upgrade/upgrade.js
+++ b/local-cli/upgrade/upgrade.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,9 +13,7 @@ const chalk = require('chalk');
 const copyProjectTemplateAndReplace = require('../generator/copyProjectTemplateAndReplace');
 const fs = require('fs');
 const path = require('path');
-const printRunInstructions = require('../generator/printRunInstructions');
 const semver = require('semver');
-const yarn = require('../util/yarn');
 
 /**
  * Migrate application to a new version of React Native.
@@ -144,7 +142,7 @@ function validateAndUpgrade() {
  * Once all checks passed, upgrade the project files.
  */
 function upgradeProjectFiles(projectDir, projectName) {
-  // Just owerwrite
+  // Just overwrite
   copyProjectTemplateAndReplace(
     path.resolve(
       'node_modules',
diff --git a/local-cli/util/Config.js b/local-cli/util/Config.js
index d6a8e24bec5a9d..f3ae068937bb2b 100644
--- a/local-cli/util/Config.js
+++ b/local-cli/util/Config.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -76,6 +76,9 @@ const Config = {
       ],
       getPolyfills,
     },
+    server: {
+      port: process.env.RCT_METRO_PORT || 8081,
+    },
     transformer: {
       babelTransformerPath: require.resolve('metro/src/reactNativeTransformer'),
     },
diff --git a/local-cli/util/PackageManager.js b/local-cli/util/PackageManager.js
index 5493ebf56a3454..fe0783ec758808 100644
--- a/local-cli/util/PackageManager.js
+++ b/local-cli/util/PackageManager.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/__mocks__/log.js b/local-cli/util/__mocks__/log.js
index 19247b9490102e..330cae48f76237 100644
--- a/local-cli/util/__mocks__/log.js
+++ b/local-cli/util/__mocks__/log.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/__tests__/findSymlinkedModules-test.js b/local-cli/util/__tests__/findSymlinkedModules-test.js
index 25c1b52d27ad99..fbdfd7463fc028 100644
--- a/local-cli/util/__tests__/findSymlinkedModules-test.js
+++ b/local-cli/util/__tests__/findSymlinkedModules-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -8,6 +8,7 @@
  * @emails oncall+javascript_foundation
  */
 
+jest.mock('path');
 jest.mock('fs');
 
 const fs = require('fs');
diff --git a/local-cli/util/assertRequiredOptions.js b/local-cli/util/assertRequiredOptions.js
index 4974d072876d45..379ad1fc165b69 100644
--- a/local-cli/util/assertRequiredOptions.js
+++ b/local-cli/util/assertRequiredOptions.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/copyAndReplace.js b/local-cli/util/copyAndReplace.js
index 9d42fad51f6ce2..d0d4eb15a4a7fe 100644
--- a/local-cli/util/copyAndReplace.js
+++ b/local-cli/util/copyAndReplace.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/findReactNativeScripts.js b/local-cli/util/findReactNativeScripts.js
index 26e8b7decfed71..5d43e29482d213 100644
--- a/local-cli/util/findReactNativeScripts.js
+++ b/local-cli/util/findReactNativeScripts.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/findSymlinkedModules.js b/local-cli/util/findSymlinkedModules.js
index fd6eecdba53ed6..d7e5d30f447353 100644
--- a/local-cli/util/findSymlinkedModules.js
+++ b/local-cli/util/findSymlinkedModules.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/findSymlinksPaths.js b/local-cli/util/findSymlinksPaths.js
index 8fc275fe5a7f26..5efa20e886b410 100644
--- a/local-cli/util/findSymlinksPaths.js
+++ b/local-cli/util/findSymlinksPaths.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/isPackagerRunning.js b/local-cli/util/isPackagerRunning.js
index faae20676eea97..f8c33e584c5fae 100644
--- a/local-cli/util/isPackagerRunning.js
+++ b/local-cli/util/isPackagerRunning.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/isValidPackageName.js b/local-cli/util/isValidPackageName.js
index c0f5d1c93bcef3..45a02319cea5c2 100644
--- a/local-cli/util/isValidPackageName.js
+++ b/local-cli/util/isValidPackageName.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/log.js b/local-cli/util/log.js
index 345d68905533ca..e74d74f18a0973 100644
--- a/local-cli/util/log.js
+++ b/local-cli/util/log.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/parseCommandLine.js b/local-cli/util/parseCommandLine.js
index f26c4acf73bea0..e0d58308a12a4a 100644
--- a/local-cli/util/parseCommandLine.js
+++ b/local-cli/util/parseCommandLine.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/walk.js b/local-cli/util/walk.js
index 3f97405812a7c2..b7658dbb874211 100644
--- a/local-cli/util/walk.js
+++ b/local-cli/util/walk.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/util/yarn.js b/local-cli/util/yarn.js
index ed3a74a498dec7..b5f73bee629017 100644
--- a/local-cli/util/yarn.js
+++ b/local-cli/util/yarn.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/local-cli/wrong-react-native.js b/local-cli/wrong-react-native.js
index 3b949818a05c43..9f7790784fa61b 100755
--- a/local-cli/wrong-react-native.js
+++ b/local-cli/wrong-react-native.js
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/package.json b/package.json
index 642a40b778bab4..81b69c53aceb2c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native",
-  "version": "0.57.0-microsoft.9",
+  "version": "0.58.6-microsoft.0",
   "description": "[Microsoft Fork] A framework for building native apps using React",
   "license": "MIT",
   "repository": {
@@ -71,7 +71,6 @@
       "node_modules/fbjs/lib/flattenArray.js",
       "node_modules/fbjs/lib/forEachObject.js",
       "node_modules/fbjs/lib/isEmpty.js",
-      "node_modules/fbjs/lib/nullthrows.js",
       "node_modules/fbjs/lib/removeFromArray.js",
       "node_modules/fbjs/lib/resolveImmediate.js",
       "node_modules/fbjs/lib/someObject.js",
@@ -89,8 +88,7 @@
       "source-map",
       "fastpath",
       "denodeify",
-      "fbjs",
-      "sinon"
+      "fbjs"
     ],
     "testEnvironment": "node"
   },
@@ -135,6 +133,8 @@
     "test": "jest",
     "test-ci": "JEST_JUNIT_OUTPUT=\"reports/junit/js-test-results.xml\" jest --maxWorkers=2 --ci --testResultsProcessor=\"jest-junit\"",
     "flow": "flow",
+    "flow-check-ios": "flow check",
+    "flow-check-android": "flow check --flowconfig-name .flowconfig.android",
     "lint": "eslint .",
     "prettier": "prettier \"./**/*.js\" --write",
     "docker-setup-android": "docker pull reactnativeci/android-base:latest",
@@ -154,7 +154,7 @@
     "react-native": "local-cli/wrong-react-native.js"
   },
   "peerDependencies": {
-    "react": "16.5.0"
+    "react": "16.6.3"
   },
   "dependencies": {
     "@babel/core": "^7.0.0",
@@ -183,6 +183,7 @@
     "@babel/plugin-transform-sticky-regex": "^7.0.0",
     "@babel/plugin-transform-template-literals": "^7.0.0",
     "@babel/plugin-transform-unicode-regex": "^7.0.0",
+    "@babel/runtime": "^7.0.0",
     "absolute-path": "^0.0.0",
     "art": "^0.10.0",
     "base64-js": "^1.1.2",
@@ -197,18 +198,18 @@
     "errorhandler": "^1.5.0",
     "escape-string-regexp": "^1.0.5",
     "event-target-shim": "^1.0.5",
-    "fbjs": "0.8.17",
-    "fbjs-scripts": "^0.8.1",
+    "fbjs": "^1.0.0",
+    "fbjs-scripts": "^1.0.0",
     "fs-extra": "^1.0.0",
     "glob": "^7.1.1",
     "graceful-fs": "^4.1.3",
     "inquirer": "^3.0.6",
     "lodash": "^4.17.5",
-    "metro": "^0.45.0",
-    "metro-babel-register": "^0.45.0",
-    "metro-config": "^0.45.0",
-    "metro-core": "^0.45.0",
-    "metro-memory-fs": "^0.45.0",
+    "metro": "^0.49.1",
+    "metro-babel-register": "^0.49.1",
+    "metro-config": "^0.49.1",
+    "metro-core": "^0.49.1",
+    "metro-memory-fs": "^0.49.1",
     "mime": "^1.3.4",
     "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",
@@ -216,15 +217,15 @@
     "node-fetch": "^2.2.0",
     "node-notifier": "^5.2.1",
     "npmlog": "^2.0.4",
+    "nullthrows": "^1.1.0",
     "opn": "^3.0.2",
     "optimist": "^0.6.1",
     "plist": "^3.0.0",
-    "pretty-format": "^4.2.1",
+    "pretty-format": "24.0.0-alpha.6",
     "promise": "^7.1.1",
     "prop-types": "^15.5.8",
     "react-clone-referenced-element": "^1.0.1",
-    "react-devtools-core": "3.3.4",
-    "react-timer-mixin": "^0.13.2",
+    "react-devtools-core": "^3.4.2",
     "regenerator-runtime": "^0.11.0",
     "rimraf": "^2.5.4",
     "schedule": "0.3.0",
@@ -232,17 +233,18 @@
     "serve-static": "^1.13.1",
     "shell-quote": "1.6.1",
     "stacktrace-parser": "^0.1.3",
-    "ws": "^1.1.0",
-    "xcode": "^0.9.1",
+    "ws": "^1.1.5",
+    "xcode": "^1.0.0",
     "xmldoc": "^0.4.0",
     "yargs": "^9.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.0.0",
+    "@reactions/component": "^2.0.2",
     "async": "^2.4.0",
-    "babel-eslint": "9.0.0-beta.2",
+    "babel-eslint": "9.0.0",
     "babel-generator": "^6.26.0",
-    "detox": "^8.0.0",
+    "detox": "9.0.4",
     "eslint": "5.1.0",
     "eslint-config-fb-strict": "22.1.0",
     "eslint-config-fbjs": "2.0.1",
@@ -251,15 +253,15 @@
     "eslint-plugin-jest": "21.8.0",
     "eslint-plugin-prettier": "2.6.0",
     "eslint-plugin-react": "7.8.2",
-    "eslint-plugin-react-native": "^3.2.1",
-    "flow-bin": "^0.78.0",
-    "jest": "23.4.1",
-    "jest-junit": "5.1.0",
+    "eslint-plugin-react-native": "3.5.0",
+    "flow-bin": "^0.86.0",
+    "jest": "24.0.0-alpha.6",
+    "jest-junit": "5.2.0",
     "prettier": "1.13.6",
-    "react": "16.5.0",
-    "react-test-renderer": "16.5.0",
-    "shelljs": "^0.7.8",
-    "sinon": "^2.2.0"
+    "react": "16.6.3",
+    "react-native-dummy": "0.1.0",
+    "react-test-renderer": "16.6.3",
+    "shelljs": "^0.7.8"
   },
   "detox": {
     "test-runner": "jest",
@@ -268,7 +270,13 @@
     "configurations": {
       "ios.sim.release": {
         "binaryPath": "RNTester/build/Build/Products/Release-iphonesimulator/RNTester.app/",
-        "build": "xcodebuild -project RNTester/RNTester.xcodeproj -scheme RNTester -configuration Release -sdk iphonesimulator -derivedDataPath RNTester/build -quiet",
+        "build": "xcodebuild -project RNTester/RNTester.xcodeproj -scheme RNTester -configuration Release -sdk iphonesimulator -derivedDataPath RNTester/build -UseModernBuildSystem=NO -quiet",
+        "type": "ios.simulator",
+        "name": "iPhone 8"
+      },
+      "ios.sim.debug": {
+        "binaryPath": "RNTester/build/Build/Products/Debug-iphonesimulator/RNTester.app/",
+        "build": "xcodebuild -project RNTester/RNTester.xcodeproj -scheme RNTester -configuration Debug -sdk iphonesimulator -derivedDataPath RNTester/build -UseModernBuildSystem=NO -quiet",
         "type": "ios.simulator",
         "name": "iPhone 8"
       }
diff --git a/react-native-cli/README.md b/react-native-cli/README.md
index 6634e124f9454a..bfb02a683c52ca 100644
--- a/react-native-cli/README.md
+++ b/react-native-cli/README.md
@@ -35,6 +35,10 @@ Running it for the first time creates a default config file. Open `~/.config/sin
         allow_access: $all
         allow_publish: $all
 
+      '**':
+        allow_access: $all
+        proxy: npmjs
+
       '*':
         allow_access: $all
         proxy: npmjs
diff --git a/react-native-cli/index.js b/react-native-cli/index.js
index fa83050700cedd..f3d89540614264 100755
--- a/react-native-cli/index.js
+++ b/react-native-cli/index.js
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -40,7 +40,6 @@
 
 var fs = require('fs');
 var path = require('path');
-var exec = require('child_process').exec;
 var execSync = require('child_process').execSync;
 var chalk = require('chalk');
 var prompt = require('prompt');
@@ -59,7 +58,7 @@ var semver = require('semver');
  *     - "/Users/home/react-native/react-native-0.22.0.tgz" - for package prepared with `npm pack`, useful for e2e tests
  */
 
-var options = require('minimist')(process.argv.slice(2));
+var args = require('minimist')(process.argv.slice(2));
 
 var CLI_MODULE_PATH = function() {
   return path.resolve(process.cwd(), 'node_modules', 'react-native', 'cli.js');
@@ -74,7 +73,7 @@ var REACT_NATIVE_PACKAGE_JSON_PATH = function() {
   );
 };
 
-if (options._.length === 0 && (options.v || options.version)) {
+if (args._.length === 0 && (args.v || args.version)) {
   printVersionsAndExit(REACT_NATIVE_PACKAGE_JSON_PATH());
 }
 
@@ -113,20 +112,20 @@ if (fs.existsSync(cliPath)) {
   cli = require(cliPath);
 }
 
-var commands = options._;
+var commands = args._;
 if (cli) {
   cli.run();
 } else {
-  if (options._.length === 0 && (options.h || options.help)) {
+  if (args._.length === 0 && (args.h || args.help)) {
     console.log(
       [
         '',
-        '  Usage: react-native [command] [options]',
+        '  Usage: react-native [command] [args]',
         '',
         '',
         '  Commands:',
         '',
-        '    init <ProjectName> [options]  generates a new project and installs its dependencies',
+        '    init <ProjectName> [args]  generates a new project and installs its dependencies',
         '',
         '  Options:',
         '',
@@ -152,7 +151,7 @@ if (cli) {
         console.error('Usage: react-native init <ProjectName> [--verbose]');
         process.exit(1);
       } else {
-        init(commands[1], options);
+        init(commands[1], args);
       }
       break;
     default:
@@ -215,6 +214,11 @@ function createAfterConfirmation(name, options) {
   };
 
   prompt.get(property, function(err, result) {
+    if (err) {
+      console.log('Error initializing project');
+      process.exit(1);
+    }
+
     if (result.yesno[0] === 'y') {
       createProject(name, options);
     } else {
diff --git a/react-native-git-upgrade/checks.js b/react-native-git-upgrade/checks.js
index 88be3ac07853d6..615648b98418d7 100644
--- a/react-native-git-upgrade/checks.js
+++ b/react-native-git-upgrade/checks.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/react-native-git-upgrade/cli.js b/react-native-git-upgrade/cli.js
index d54cf4a26beed6..5f9766782e8024 100644
--- a/react-native-git-upgrade/cli.js
+++ b/react-native-git-upgrade/cli.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/react-native-git-upgrade/cliEntry.js b/react-native-git-upgrade/cliEntry.js
index bb3afc61e6f65d..9a2807293eccef 100644
--- a/react-native-git-upgrade/cliEntry.js
+++ b/react-native-git-upgrade/cliEntry.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/react-native-git-upgrade/index.js b/react-native-git-upgrade/index.js
index c5e927312507cb..235a3b4ddca826 100644
--- a/react-native-git-upgrade/index.js
+++ b/react-native-git-upgrade/index.js
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/react-native-git-upgrade/yarn.js b/react-native-git-upgrade/yarn.js
index b215cfa4a4ac39..1fea500cefb203 100644
--- a/react-native-git-upgrade/yarn.js
+++ b/react-native-git-upgrade/yarn.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/react.gradle b/react.gradle
index d71b5c14d37f0a..83cb1302b4802f 100644
--- a/react.gradle
+++ b/react.gradle
@@ -1,3 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates.
+
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
 import org.apache.tools.ant.taskdefs.condition.Os
 
 def config = project.hasProperty("react") ? project.react : [];
@@ -92,6 +97,9 @@ afterEvaluate {
             ? variant.packageApplication
             : tasks.findByName("package${targetName}")
 
+        // pre bundle build task for Android plugin 3.2+
+        def buildPreBundleTask = tasks.findByName("build${targetName}PreBundle")
+
         def resourcesDirConfigValue = config."resourcesDir${targetName}"
         if (resourcesDirConfigValue) {
             def currentCopyResTask = tasks.create(
@@ -109,6 +117,9 @@ afterEvaluate {
             }
 
             packageTask.dependsOn(currentCopyResTask)
+            if (buildPreBundleTask != null) {
+                buildPreBundleTask.dependsOn(currentCopyResTask)
+            }
         }
 
         def currentAssetsCopyTask = tasks.create(
@@ -117,9 +128,20 @@ afterEvaluate {
             group = "react"
             description = "copy bundled JS into ${targetName}."
 
-            from jsBundleDir
-            into file(config."jsBundleDir${targetName}" ?:
-                "$buildDir/intermediates/assets/${targetPath}")
+            if (config."jsBundleDir${targetName}") {
+                from jsBundleDir
+                into file(config."jsBundleDir${targetName}")
+            } else {
+                into ("$buildDir/intermediates")
+                into ("assets/${targetPath}") {
+                    from jsBundleDir
+                }
+
+                // Workaround for Android Gradle Plugin 3.2+ new asset directory
+                into ("merged_assets/${variant.name}/merge${targetName}Assets/out") {
+                    from jsBundleDir
+                }
+            }
 
             // mergeAssets must run first, as it clears the intermediates directory
             dependsOn(variant.mergeAssets)
@@ -128,5 +150,8 @@ afterEvaluate {
         }
 
         packageTask.dependsOn(currentAssetsCopyTask)
+        if (buildPreBundleTask != null) {
+            buildPreBundleTask.dependsOn(currentAssetsCopyTask)
+        }
     }
 }
diff --git a/rn-cli.config.js b/rn-cli.config.js
index c95534de923ad8..6fcdbe88908cf9 100644
--- a/rn-cli.config.js
+++ b/rn-cli.config.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/rn-get-polyfills.js b/rn-get-polyfills.js
index db65ff2245b704..121fa00ab66543 100644
--- a/rn-get-polyfills.js
+++ b/rn-get-polyfills.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -18,5 +18,4 @@ module.exports = () => [
   require.resolve('./Libraries/polyfills/Array.prototype.es6.js'),
   require.resolve('./Libraries/polyfills/Array.es6.js'),
   require.resolve('./Libraries/polyfills/Object.es7.js'),
-  require.resolve('./Libraries/polyfills/babelHelpers.js'),
 ];
diff --git a/runXcodeTests.sh b/runXcodeTests.sh
index 9b9b00b99ae487..05cd982769541a 100755
--- a/runXcodeTests.sh
+++ b/runXcodeTests.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This script should be run from the react-native root
 
 THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOURCE[0]}")")" && pwd)
diff --git a/scripts/.tests.env b/scripts/.tests.env
index f5b9bb7a408184..6f97cae8de0e12 100644
--- a/scripts/.tests.env
+++ b/scripts/.tests.env
@@ -4,7 +4,7 @@
 
 ## ANDROID ##
 # Android SDK Build Tools revision
-export ANDROID_SDK_BUILD_TOOLS_REVISION=28.0.1
+export ANDROID_SDK_BUILD_TOOLS_REVISION=28.0.3
 # Android API Level we build with
 export ANDROID_SDK_BUILD_API_LEVEL="28"
 # Google APIs for Android level
@@ -17,12 +17,9 @@ export AVD_NAME="testAVD"
 export AVD_ABI=x86
 
 ## IOS ##
-export IOS_TARGET_OS="11.4"
-export IOS_DEVICE="iPhone 5s"
-
-export SCHEME="RNTester"
-export SDK="iphonesimulator${IOS_TARGET_OS}"
-export DESTINATION="platform=iOS Simulator,OS=${IOS_TARGET_OS},name=${IOS_DEVICE}"
+export IOS_TARGET_OS="12.1"
+export IOS_DEVICE="iPhone 6s"
+export TVOS_DEVICE="Apple TV"
 
 ## CI OVERRIDES ##
 # Values to override when running in CI
@@ -31,4 +28,3 @@ if [ $CI ]; then
   # Use ARM on Circle CI
   export AVD_ABI=armeabi-v7a
 fi
-
diff --git a/scripts/android-e2e-test.js b/scripts/android-e2e-test.js
index f23371b106c214..abeabb4a55e4e4 100644
--- a/scripts/android-e2e-test.js
+++ b/scripts/android-e2e-test.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -147,7 +147,6 @@ describe('Android Test App', function() {
   });
 
   it('should have Debug In Chrome working', function() {
-    const androidAppCode = fs.readFileSync('index.js', 'utf-8');
     // http://developer.android.com/reference/android/view/KeyEvent.html#KEYCODE_MENU
     return driver
       .waitForElementByXPath(
diff --git a/scripts/android-setup.sh b/scripts/android-setup.sh
index a3dff3734ad6c9..d70843c7420e57 100644
--- a/scripts/android-setup.sh
+++ b/scripts/android-setup.sh
@@ -1,3 +1,9 @@
+#!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # inspired by https://github.com/Originate/guide/blob/master/android/guide/Continuous%20Integration.md
 
 # shellcheck disable=SC1091
diff --git a/scripts/bump-oss-version.js b/scripts/bump-oss-version.js
index 6af9eb22706e94..9518de37388df1 100755
--- a/scripts/bump-oss-version.js
+++ b/scripts/bump-oss-version.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/scripts/circleci/analyze_code.sh b/scripts/circleci/analyze_code.sh
index 9569a4fa8e73ff..ef55d484e91a46 100755
--- a/scripts/circleci/analyze_code.sh
+++ b/scripts/circleci/analyze_code.sh
@@ -1,12 +1,15 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
-cat <(echo eslint; yarn --silent lint --format=json; echo flow; yarn --silent flow check --json) | GITHUB_TOKEN=$GITHUB_TOKEN CI_USER=$CI_USER CI_REPO=$CI_REPO PULL_REQUEST_NUMBER=$PULL_REQUEST_NUMBER node bots/code-analysis-bot.js
+cat <(echo eslint; npm run lint --silent -- --format=json; echo flow; npm run flow --silent -- check --json) | node scripts/circleci/code-analysis-bot.js
 
 # check status
 STATUS=$?
 if [ $STATUS == 0 ]; then
-  echo "Code analyzed successfully"
+  echo "Code analyzed successfully."
 else
-  echo "Code analyzis failed, error status $STATUS"
+  echo "Code analysis failed, error status $STATUS."
 fi
-
diff --git a/scripts/circleci/analyze_scripts.sh b/scripts/circleci/analyze_scripts.sh
new file mode 100755
index 00000000000000..052688cab9bafa
--- /dev/null
+++ b/scripts/circleci/analyze_scripts.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+IFS=$'\n'
+
+results=( "$(find . -type f -not -path "*node_modules*" -not -path "*third-party*" -name '*.sh' -exec sh -c  'shellcheck "$1" -f json' -- {} \;)" )
+
+cat <(echo shellcheck; printf '%s\n' "${results[@]}" | jq .,[] | jq -s . | jq --compact-output --raw-output '[ (.[] | .[] | . ) ]') | node scripts/circleci/code-analysis-bot.js
+
+# check status
+STATUS=$?
+if [ $STATUS == 0 ]; then
+  echo "Shell scripts analyzed successfully."
+else
+  echo "Shell script analysis failed, error status $STATUS."
+fi
diff --git a/scripts/circleci/apt-get-android-deps.sh b/scripts/circleci/apt-get-android-deps.sh
index 79fabd2026d67e..b90e8818b28918 100755
--- a/scripts/circleci/apt-get-android-deps.sh
+++ b/scripts/circleci/apt-get-android-deps.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 set -e
 
diff --git a/scripts/circleci/buck_fetch.sh b/scripts/circleci/buck_fetch.sh
index df9ce34304da67..5c4ca33a45bd1f 100755
--- a/scripts/circleci/buck_fetch.sh
+++ b/scripts/circleci/buck_fetch.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 set -ex
 
diff --git a/scripts/circleci/check_cache.sh b/scripts/circleci/check_cache.sh
deleted file mode 100755
index 5cd3b68251eef1..00000000000000
--- a/scripts/circleci/check_cache.sh
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/bin/bash
-
-set -e
-
-# Make sure we don't accidentally restore a cache that contains the Metro
-# filename issue that was fixed in Metro 0.25, originally introduced in
-# D6752278. Once fixed, this was causing sporadic failures in the iOS
-# and tvOS workflows as the issue persisted in the cached node_modules
-#
-# The filename issue can be summarized as follows:
-# A version of Metro was published to npm with HmrClient.js and
-# HmrClient.js.flow files, while the repo contains HMRClient.js and
-# HMRClient.js.flow. This was due to a case issue in the publisher's
-# host machine.
-# The issue this is checking for is manifested by the presence of all
-# of the following files: HmrClient.js, HMRClient.js, HmrClient.js.flow,
-# HMRClient.js.flow.
-
-EXPECTED='1'
-ACTUAL=$(ls node_modules/metro/src/lib/bundle-modules/*.js | xargs | awk '{print tolower($0)}' | tr ' ' '\n' | grep hmrclient.js | wc -l | tr -d '[:space:]')
-
-if [ "$EXPECTED" != "$ACTUAL" ]; then
-  echo "HmrClient.js crept into the cache?"
-  echo $(ls node_modules/metro/src/lib/bundle-modules/H*lient.js)
-  exit 1
-fi
diff --git a/scripts/circleci/check_license.sh b/scripts/circleci/check_license.sh
index 7f50110adaa37b..5874a336dc71d2 100755
--- a/scripts/circleci/check_license.sh
+++ b/scripts/circleci/check_license.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 set -e
 
diff --git a/scripts/circleci/code-analysis-bot.js b/scripts/circleci/code-analysis-bot.js
new file mode 100644
index 00000000000000..86f21ab69f5233
--- /dev/null
+++ b/scripts/circleci/code-analysis-bot.js
@@ -0,0 +1,324 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+'use strict';
+
+if (!process.env.GITHUB_OWNER) {
+  console.error('Missing GITHUB_OWNER. Example: facebook');
+  process.exit(1);
+}
+if (!process.env.GITHUB_REPO) {
+  console.error('Missing GITHUB_REPO. Example: react-native');
+  process.exit(1);
+}
+
+// https://octokit.github.io/rest.js/
+const octokit = require('@octokit/rest')();
+
+const path = require('path');
+
+function push(arr, key, value) {
+  if (!arr[key]) {
+    arr[key] = [];
+  }
+  arr[key].push(value);
+}
+
+/**
+ * There is unfortunately no standard format to report an error, so we have
+ * to write a specific converter for each tool we want to support.
+ *
+ * Those functions take a json object as input and fill the output with the
+ * following format:
+ *
+ * { [ path: string ]: Array< { message: string, line: number }> }
+ *
+ * This is an object where the keys are the path of the files and values
+ * is an array of objects of the shape message and line.
+ */
+const converters = {
+  raw: function(output, input) {
+    for (let key in input) {
+      input[key].forEach(function(message) {
+        push(output, key, message);
+      });
+    }
+  },
+
+  flow: function(output, input) {
+    if (!input || !input.errors) {
+      return;
+    }
+
+    input.errors.forEach(function(error) {
+      push(output, error.message[0].path, {
+        message: error.message.map(message => message.descr).join(' '),
+        line: error.message[0].line,
+        converter: 'flow',
+      });
+    });
+  },
+
+  eslint: function(output, input) {
+    if (!input) {
+      return;
+    }
+
+    input.forEach(function(file) {
+      file.messages.forEach(function(message) {
+        push(output, file.filePath, {
+          message: message.ruleId + ': ' + message.message,
+          line: message.line,
+          converter: 'eslint',
+        });
+      });
+    });
+  },
+
+  shellcheck: function(output, input) {
+    if (!input) {
+      return;
+    }
+
+    input.forEach(function(report) {
+      push(output, report.file, {
+        message:
+          '**[SC' +
+          report.code +
+          '](https://github.com/koalaman/shellcheck/wiki/SC' +
+          report.code +
+          '):** (' +
+          report.level +
+          ') ' +
+          report.message,
+        line: report.line,
+        endLine: report.endLine,
+        column: report.column,
+        endColumn: report.endColumn,
+        converter: 'shellcheck',
+      });
+    });
+  },
+};
+
+function getShaFromPullRequest(owner, repo, number, callback) {
+  octokit.pullRequests.get({owner, repo, number}, (error, res) => {
+    if (error) {
+      console.error(error);
+      return;
+    }
+
+    callback(res.data.head.sha);
+  });
+}
+
+function getFilesFromCommit(owner, repo, sha, callback) {
+  octokit.repos.getCommit({owner, repo, sha}, (error, res) => {
+    if (error) {
+      console.error(error);
+      return;
+    }
+    // A merge commit should not have any new changes to report
+    if (res.parents && res.parents.length > 1) {
+      return;
+    }
+
+    callback(res.data.files);
+  });
+}
+
+/**
+ * Sadly we can't just give the line number to github, we have to give the
+ * line number relative to the patch file which is super annoying. This
+ * little function builds a map of line number in the file to line number
+ * in the patch file
+ */
+function getLineMapFromPatch(patchString) {
+  let diffLineIndex = 0;
+  let fileLineIndex = 0;
+  let lineMap = {};
+
+  patchString.split('\n').forEach(line => {
+    if (line.match(/^@@/)) {
+      fileLineIndex = line.match(/\+([0-9]+)/)[1] - 1;
+      return;
+    }
+
+    diffLineIndex++;
+    if (line[0] !== '-') {
+      fileLineIndex++;
+      if (line[0] === '+') {
+        lineMap[fileLineIndex] = diffLineIndex;
+      }
+    }
+  });
+
+  return lineMap;
+}
+
+function sendReview(owner, repo, number, commit_id, body, comments) {
+  if (process.env.GITHUB_TOKEN) {
+    if (comments.length === 0) {
+      // Do not leave an empty review.
+      return;
+    }
+
+    const event = 'REQUEST_CHANGES';
+
+    const opts = {
+      owner,
+      repo,
+      number,
+      commit_id,
+      body,
+      event,
+      comments,
+    };
+
+    octokit.pullRequests.createReview(opts, function(error, res) {
+      if (error) {
+        console.error(error);
+        return;
+      }
+    });
+  } else {
+    if (comments.length === 0) {
+      console.log('No issues found.');
+      return;
+    }
+
+    if (process.env.CIRCLE_CI) {
+      console.error(
+        'Code analysis found issues, but the review cannot be posted to GitHub without an access token.',
+      );
+      process.exit(1);
+    }
+
+    let results = body + '\n';
+    comments.forEach(comment => {
+      results +=
+        comment.path + ':' + comment.position + ': ' + comment.body + '\n';
+    });
+    console.log(results);
+  }
+}
+
+function main(messages, owner, repo, number) {
+  // No message, we don't need to do anything :)
+  if (Object.keys(messages).length === 0) {
+    return;
+  }
+
+  if (process.env.GITHUB_TOKEN) {
+    octokit.authenticate({
+      type: 'oauth',
+      token: process.env.GITHUB_TOKEN,
+    });
+  } else {
+    console.log(
+      'Missing GITHUB_TOKEN. Example: 5fd88b964fa214c4be2b144dc5af5d486a2f8c1e. Review feedback with code analysis results will not be provided on GitHub.',
+    );
+  }
+
+  getShaFromPullRequest(owner, repo, number, sha => {
+    getFilesFromCommit(owner, repo, sha, files => {
+      let comments = [];
+      let convertersUsed = [];
+      files.filter(file => messages[file.filename]).forEach(file => {
+        // github api sometimes does not return a patch on large commits
+        if (!file.patch) {
+          return;
+        }
+        const lineMap = getLineMapFromPatch(file.patch);
+        messages[file.filename].forEach(message => {
+          if (lineMap[message.line]) {
+            const comment = {
+              path: file.filename,
+              position: lineMap[message.line],
+              body: message.message,
+            };
+            convertersUsed.push(message.converter);
+            comments.push(comment);
+          }
+        }); // forEach
+      }); // filter
+
+      let body = '**Code analysis results:**\n\n';
+      const uniqueconvertersUsed = [...new Set(convertersUsed)];
+      uniqueconvertersUsed.forEach(converter => {
+        body += '* `' + converter + '` found some issues.\n';
+      });
+
+      sendReview(owner, repo, number, sha, body, comments);
+    }); // getFilesFromCommit
+  }); // getShaFromPullRequest
+}
+
+let content = '';
+process.stdin.resume();
+process.stdin.on('data', function(buf) {
+  content += buf.toString();
+});
+process.stdin.on('end', function() {
+  let messages = {};
+
+  // Since we send a few http requests to setup the process, we don't want
+  // to run this file one time per code analysis tool. Instead, we write all
+  // the results in the same stdin stream.
+  // The format of this stream is
+  //
+  //   name-of-the-converter
+  //   {"json":"payload"}
+  //   name-of-the-other-converter
+  //   {"other": ["json", "payload"]}
+  //
+  // In order to generate such stream, here is a sample bash command:
+  //
+  //   cat <(echo eslint; npm run lint --silent -- --format=json; echo flow; flow --json) | node code-analysis-bot.js
+
+  const lines = content.trim().split('\n');
+  for (let i = 0; i < Math.ceil(lines.length / 2); ++i) {
+    const converter = converters[lines[i * 2]];
+    if (!converter) {
+      throw new Error('Unknown converter ' + lines[i * 2]);
+    }
+    let json;
+    try {
+      json = JSON.parse(lines[i * 2 + 1]);
+    } catch (e) {}
+
+    converter(messages, json);
+  }
+
+  // The paths are returned in absolute from code analysis tools but github works
+  // on paths relative from the root of the project. Doing the normalization here.
+  const pwd = path.resolve('.');
+  for (let absolutePath in messages) {
+    const relativePath = path.relative(pwd, absolutePath);
+    if (relativePath === absolutePath) {
+      continue;
+    }
+    messages[relativePath] = messages[absolutePath];
+    delete messages[absolutePath];
+  }
+
+  const owner = process.env.GITHUB_OWNER;
+  const repo = process.env.GITHUB_REPO;
+
+  if (!process.env.GITHUB_PR_NUMBER) {
+    console.error('Missing GITHUB_PR_NUMBER. Example: 4687');
+    // for master branch, don't throw an error
+    process.exit(0);
+  }
+
+  const number = process.env.GITHUB_PR_NUMBER;
+
+  // intentional lint warning to make sure that the bot is working :)
+  main(messages, owner, repo, number);
+});
diff --git a/scripts/circleci/exec_author_check.sh b/scripts/circleci/exec_author_check.sh
index b1fa20cad0eda1..f0b7fb7a124633 100755
--- a/scripts/circleci/exec_author_check.sh
+++ b/scripts/circleci/exec_author_check.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This is meant to be used to keep failing tests from
 # running for regular contributors, while still letting
 # them run on PRs submitted by core contributors.
@@ -7,4 +11,9 @@
 
 # Add yourself here if you'd like to pass the whitelist.
 # Once N > 1 we should change this into an array check.
-echo "Skipping" "$@" ", branch is stable"
+if [ "$CIRCLE_USERNAME" == "hramos" ]; then
+  # execute command
+  "$@"
+else
+  echo "Skipping" "$@" ", user is not whitelisted"
+fi
diff --git a/scripts/circleci/exec_swallow_error.sh b/scripts/circleci/exec_swallow_error.sh
index 1c2470c7121354..54a3a62283c7e9 100755
--- a/scripts/circleci/exec_swallow_error.sh
+++ b/scripts/circleci/exec_swallow_error.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 # execute command
 "$@"
diff --git a/scripts/circleci/gradle_download_deps.sh b/scripts/circleci/gradle_download_deps.sh
index 1c153af316bc13..f70fc0da1264c9 100755
--- a/scripts/circleci/gradle_download_deps.sh
+++ b/scripts/circleci/gradle_download_deps.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 set -e
 
-./gradlew :ReactAndroid:downloadBoost # :ReactAndroid:downloadDoubleConversion :ReactAndroid:downloadFolly :ReactAndroid:downloadGlog :ReactAndroid:downloadJSCHeaders
\ No newline at end of file
+./gradlew :ReactAndroid:downloadBoost # :ReactAndroid:downloadDoubleConversion :ReactAndroid:downloadFolly :ReactAndroid:downloadGlog :ReactAndroid:downloadJSCHeaders
diff --git a/scripts/circleci/validate_yarn_lockfile.sh b/scripts/circleci/validate_yarn_lockfile.sh
new file mode 100755
index 00000000000000..8231cd496468dc
--- /dev/null
+++ b/scripts/circleci/validate_yarn_lockfile.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+# Abort the mission if any command fails
+set -e
+
+# Allow the script to be invoked from various environments
+if [[ -z "${OVERRIDE_YARN_BINARY}" ]]; then
+  YARN_BINARY=$(command -v yarn)
+else
+  YARN_BINARY="${OVERRIDE_YARN_BINARY}"
+fi
+
+REACT_NATIVE_TEMP_DIR=$(mktemp -d /tmp/react-native-XXXXXXXX)
+
+function cleanup {
+  set +e
+  rm -rf "$REACT_NATIVE_TEMP_DIR"
+  set -e
+}
+
+function msg {
+  echo -e " "
+  echo -e "\\x1B[36m${1}\\x1B[0m";
+  echo -e "\\x1B[36m${1//?/=}\\x1B[0m"
+}
+
+trap cleanup EXIT
+
+cp -R ./package.json "$REACT_NATIVE_TEMP_DIR"
+cp -R ./yarn.lock "$REACT_NATIVE_TEMP_DIR"
+pushd "$REACT_NATIVE_TEMP_DIR" >/dev/null
+
+if ! $YARN_BINARY --ignore-scripts --silent --non-interactive --mutex network --frozen-lockfile; then
+  msg "Yarn validation failed."
+  echo "This means the package.json and yarn.lock disagree in some way."
+  echo "Try fixing it by running \`yarn\` and committing the changes."
+fi
+
+popd >/dev/null
diff --git a/scripts/ios-configure-glog.sh b/scripts/ios-configure-glog.sh
index 3840fc4ebc719c..73a892c9a85c15 100755
--- a/scripts/ios-configure-glog.sh
+++ b/scripts/ios-configure-glog.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 set -e
 
 PLATFORM_NAME="${PLATFORM_NAME:-iphoneos}"
@@ -10,7 +15,7 @@ if [ -z "$CURRENT_ARCH" ] || [ "$CURRENT_ARCH" == "undefined_arch" ]; then
 
     if [[ "$PLATFORM_NAME" == *"simulator"* ]]; then
         CURRENT_ARCH="x86_64"
-    else 
+    else
         CURRENT_ARCH="armv7"
     fi
 fi
@@ -50,3 +55,12 @@ cat << EOF >> src/config.h
 #define PC_FROM_UCONTEXT uc_mcontext->__ss.__eip
 #endif
 EOF
+
+# Prepare exported header include
+EXPORTED_INCLUDE_DIR="exported/glog"
+mkdir -p exported/glog
+cp -f src/glog/log_severity.h "$EXPORTED_INCLUDE_DIR/"
+cp -f src/glog/logging.h "$EXPORTED_INCLUDE_DIR/"
+cp -f src/glog/raw_logging.h "$EXPORTED_INCLUDE_DIR/"
+cp -f src/glog/stl_logging.h "$EXPORTED_INCLUDE_DIR/"
+cp -f src/glog/vlog_is_on.h "$EXPORTED_INCLUDE_DIR/"
diff --git a/scripts/ios-install-third-party.sh b/scripts/ios-install-third-party.sh
index 4fbaaf70af074e..3dfca82447a059 100755
--- a/scripts/ios-install-third-party.sh
+++ b/scripts/ios-install-third-party.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 cachedir="$HOME/.rncache"
 mkdir -p "$cachedir"
@@ -45,7 +49,7 @@ function fetch_and_unpack () {
     done
 
     dir=$(basename "$file" .tar.gz)
-    if [ "$fetched" = "yes" ] || [ ! -d "third-party/$dir" ]; then
+    if [ "$fetched" = "yes" ] || [ ! -f "third-party/$dir/.installed" ]; then
         (cd third-party;
          rm -rf "$dir"
          echo Unpacking "$cachedir/$file"...
@@ -53,7 +57,7 @@ function fetch_and_unpack () {
              file_fail "$cachedir/$file" "Unpacking '$cachedir/$file' failed"
          fi
          cd "$dir"
-         eval "${cmd:-true}")
+         eval "${cmd:-true}" && touch .installed)
     fi
 }
 
@@ -61,13 +65,19 @@ mkdir -p third-party
 
 SCRIPTDIR=$(dirname "$0")
 
-# TODO: temporarily use our stubbed version of glog/logging.h until glog is updated to not use the Binscope banned APIs sscanf() and strncpy(). 
-glogdir=third-party/glog-0.3.5/src/glog
+# TODO: temporarily use our stubbed version of glog/logging.h until glog is updated to not use the Binscope banned APIs sscanf() and strncpy().
+# Fb changed to copy into exported instead of src
+glogdir=third-party/glog-0.3.5/exported/glog
+glogdir2=third-party/glog-0.3.5/src/glog
+
 if [ ! -d "$glogdir" ]; then
     mkdir -p $glogdir
     cp stubs/glog/logging.h $glogdir
+	mkdir -p $glogdir2
+    cp stubs/glog/logging.h $glogdir2
 fi
 # fetch_and_unpack glog-0.3.5.tar.gz https://github.com/google/glog/archive/v0.3.5.tar.gz 61067502c5f9769d111ea1ee3f74e6ddf0a5f9cc "\"$SCRIPTDIR/ios-configure-glog.sh\""
+
 fetch_and_unpack double-conversion-1.1.6.tar.gz https://github.com/google/double-conversion/archive/v1.1.6.tar.gz 1c7d88afde3aaeb97bb652776c627b49e132e8e0
 fetch_and_unpack boost_1_63_0.tar.gz https://github.com/react-native-community/boost-for-react-native/releases/download/v1.63.0-0/boost_1_63_0.tar.gz c3f57e1d22a995e608983effbb752b54b6eab741
-fetch_and_unpack folly-2016.10.31.00.tar.gz https://github.com/facebook/folly/archive/v2016.10.31.00.tar.gz fb8cdf8962d8c9d0c20a150b6ec3b75d1fa50696
+fetch_and_unpack folly-2018.10.22.00.tar.gz https://github.com/facebook/folly/archive/v2018.10.22.00.tar.gz f70a75bfeb394363d2049a846bba118ffb3b368a
diff --git a/scripts/launchPackager.bat b/scripts/launchPackager.bat
index b85ecc6822ce4a..bd3381e99ebc27 100644
--- a/scripts/launchPackager.bat
+++ b/scripts/launchPackager.bat
@@ -1,4 +1,4 @@
-:: Copyright (c) 2015-present, Facebook, Inc.
+:: Copyright (c) Facebook, Inc. and its affiliates.
 ::
 :: This source code is licensed under the MIT license found in the
 :: LICENSE file in the root directory of this source tree.
diff --git a/scripts/launchPackager.command b/scripts/launchPackager.command
index f2520010cf242f..7feb061ec16674 100755
--- a/scripts/launchPackager.command
+++ b/scripts/launchPackager.command
@@ -1,24 +1,17 @@
 #!/bin/bash
-
-# Copyright (c) 2015-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
 # Set terminal title
-echo -en "\033]0;Metro Bundler\a"
+echo -en "\\033]0;Metro Bundler\\a"
 clear
 
-THIS_DIR=$(dirname "$0")
-. "$THIS_DIR/logging.sh"
-beginLog
-
 THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOURCE[0]}")")" && pwd)
-. "$THIS_DIR/packager.sh" 2>&1 | tee -a "${LOG_FILE}"
 
-endLog
+# shellcheck source=/dev/null
+. "$THIS_DIR/packager.sh"
 
-if [ "$SERVERS_NO_WAIT" != "1" ]; then
-  echo "Process terminated. Press <enter> to close the window"
-  read
-fi
+echo "Process terminated. Press <enter> to close the window"
+read -r
diff --git a/scripts/objc-test-ios.sh b/scripts/objc-test-ios.sh
index d466f877540add..10d0f00a81e54f 100755
--- a/scripts/objc-test-ios.sh
+++ b/scripts/objc-test-ios.sh
@@ -1,22 +1,30 @@
 #!/bin/bash
-set -ex
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Script used to run iOS tests.
-# If not arguments are passed to the script, it will only compile
+# If no arguments are passed to the script, it will only compile
 # the RNTester.
 # If the script is called with a single argument "test", we'll
 # also run the RNTester integration test (needs JS and packager):
 # ./objc-test-ios.sh test
 
+set -ex
+
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 ROOT=$(dirname "$SCRIPTS")
 
 cd "$ROOT"
 
+# shellcheck disable=SC1091
+source "scripts/.tests.env"
+
 export TEST_NAME="iOS"
 export SCHEME="RNTester"
 export SDK="iphonesimulator"
-export DESTINATION="platform=iOS Simulator,name=iPhone 5s,OS=11.4"
+export DESTINATION="platform=iOS Simulator,name=${IOS_DEVICE},OS=${IOS_TARGET_OS}"
 
 # If there's a "test" argument, pass it to the test script.
-. ./scripts/objc-test.sh $1
+./scripts/objc-test.sh $1
diff --git a/scripts/objc-test-tvos.sh b/scripts/objc-test-tvos.sh
index 98016598df0ff4..e58ac222f5a0c2 100755
--- a/scripts/objc-test-tvos.sh
+++ b/scripts/objc-test-tvos.sh
@@ -1,23 +1,30 @@
 #!/bin/bash
-set -ex
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Script used to run tvOS tests.
-# If not arguments are passed to the script, it will only compile
+# If no arguments are passed to the script, it will only compile
 # the RNTester.
 # If the script is called with a single argument "test", we'll
 # also run the RNTester integration test (needs JS and packager):
 # ./objc-test-tvos.sh test
 
+set -ex
+
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 ROOT=$(dirname "$SCRIPTS")
 
 cd "$ROOT"
 
+# shellcheck disable=SC1091
+source "scripts/.tests.env"
+
 export TEST_NAME="tvOS"
 export SCHEME="RNTester-tvOS"
 export SDK="appletvsimulator"
-export DESTINATION="platform=tvOS Simulator,name=Apple TV,OS=11.4"
+export DESTINATION="platform=tvOS Simulator,name=${TVOS_DEVICE},OS=${IOS_TARGET_OS}"
 
 # If there's a "test" argument, pass it to the test script.
-. ./scripts/objc-test.sh $1
-
+./scripts/objc-test.sh $1
diff --git a/scripts/objc-test.sh b/scripts/objc-test.sh
index ed670cc2a2a5f2..08ef7205ed2fdc 100755
--- a/scripts/objc-test.sh
+++ b/scripts/objc-test.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
-set -ex
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Script used to run iOS and tvOS tests.
 # Environment variables are used to configure what test to run.
 # If not arguments are passed to the script, it will only compile
@@ -9,20 +12,22 @@ set -ex
 # also run the RNTester integration test (needs JS and packager).
 # ./objc-test.sh test
 
+set -ex
+
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
-ROOT=$(dirname $SCRIPTS)
+ROOT=$(dirname "$SCRIPTS")
 
-cd $ROOT
+cd "$ROOT"
 
 # Create cleanup handler
 function cleanup {
-  EXIT_CODE=$?
+  EXIT=$?
   set +e
 
-  if [ $EXIT_CODE -ne 0 ];
+  if [ $EXIT -ne 0 ];
   then
     WATCHMAN_LOGS=/usr/local/Cellar/watchman/3.1/var/run/watchman/$USER.log
-    [ -f $WATCHMAN_LOGS ] && cat $WATCHMAN_LOGS
+    [ -f "$WATCHMAN_LOGS" ] && cat "$WATCHMAN_LOGS"
   fi
   # kill whatever is occupying port 8081 (packager)
   lsof -i tcp:8081 | awk 'NR!=1 {print $2}' | xargs kill
@@ -56,7 +61,7 @@ function waitForPackager {
 if [ "$1" = "test" ]; then
 
 # Start the packager
-npm run start --max-workers=1 || echo "Can't start packager automatically" &
+yarn start --max-workers=1 || echo "Can't start packager automatically" &
 # Start the WebSocket test server
 open "./IntegrationTests/launchWebSocketServer.command" || echo "Can't start web socket server automatically"
 
@@ -75,19 +80,22 @@ rm temp.bundle
 # Run tests
 xcodebuild \
   -project "RNTester/RNTester.xcodeproj" \
-  -scheme $SCHEME \
-  -sdk $SDK \
+  -scheme "$SCHEME" \
+  -sdk "$SDK" \
   -destination "$DESTINATION" \
+  -UseModernBuildSystem=NO \
   build test \
-  | xcpretty --report junit --output "$HOME/react-native/reports/junit/$TEST_NAME/results.xml"
+  | xcpretty --report junit --output "$HOME/react-native/reports/junit/$TEST_NAME/results.xml" \
+  && exit "${PIPESTATUS[0]}"
 
 else
 
 # Don't run tests. No need to pass -destination to xcodebuild.
 xcodebuild \
   -project "RNTester/RNTester.xcodeproj" \
-  -scheme $SCHEME \
-  -sdk $SDK \
+  -scheme "$SCHEME" \
+  -sdk "$SDK" \
+  -UseModernBuildSystem=NO \
   build
 
 fi
diff --git a/scripts/packager.sh b/scripts/packager.sh
index 1d33bf557e8fb3..558996574740b1 100755
--- a/scripts/packager.sh
+++ b/scripts/packager.sh
@@ -1,11 +1,12 @@
 #!/bin/bash
-
-# Copyright (c) 2015-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
 THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOURCE[0]}")")" && pwd)
+
+# shellcheck source=/dev/null
 source "${THIS_DIR}/.packager.env"
-cd "$THIS_DIR/.."
+cd "$THIS_DIR/.." || exit
 node "./local-cli/cli.js" start "$@"
diff --git a/scripts/process-podspecs.sh b/scripts/process-podspecs.sh
index 6c66f1d87ea921..539a4fea34ec0e 100755
--- a/scripts/process-podspecs.sh
+++ b/scripts/process-podspecs.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 set -ex
 
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
diff --git a/scripts/publish-npm.js b/scripts/publish-npm.js
index 5c1658112caf63..12ae53df3f6eb5 100644
--- a/scripts/publish-npm.js
+++ b/scripts/publish-npm.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -13,26 +13,28 @@
  * This script publishes a new version of react-native to NPM.
  * It is supposed to run in CI environment, not on a developer's machine.
  *
- * To make it easier for developers it uses some logic to identify with which version to publish the package.
+ * To make it easier for developers it uses some logic to identify with which
+ * version to publish the package.
  *
  * To cut a branch (and release RC):
  * - Developer: `git checkout -b 0.XY-stable`
- * - Developer: `git tag v0.XY.0-rc` and `git push --tags` to git@github.com:facebook/react-native.git
- * - CI: test and deploy to npm (run this script) with version 0.XY.0-rc with tag "next"
+ * - Developer: `./scripts/bump-oss-version.js v0.XY.0-rc.0`
+ * - CI: test and deploy to npm (run this script) with version `0.XY.0-rc.0`
+ *   with tag "next"
  *
  * To update RC release:
  * - Developer: `git checkout 0.XY-stable`
  * - Developer: cherry-pick whatever changes needed
- * - Developer: `git tag v0.XY.0-rc1` and `git push --tags` to git@github.com:facebook/react-native.git
- * - CI: test and deploy to npm (run this script) with version 0.XY.0-rc1 with tag "next"
+ * - Developer: `./scripts/bump-oss-version.js v0.XY.0-rc.1`
+ * - CI: test and deploy to npm (run this script) with version `0.XY.0-rc.1`
+ *   with tag "next"
  *
  * To publish a release:
  * - Developer: `git checkout 0.XY-stable`
  * - Developer: cherry-pick whatever changes needed
- * - Developer: `git tag latest`
- * - Developer: `git tag v0.XY.0`
- * - Developer: `git push --tags` to git@github.com:facebook/react-native.git
- * - CI: test and deploy to npm (run this script) with version 0.XY.0 with and not tag (latest is implied by npm)
+ * - Developer: `./scripts/bump-oss-version.js v0.XY.0`
+ * - CI: test and deploy to npm (run this script) with version `0.XY.0`
+ *   and no tag ("latest" is implied by npm)
  *
  * To patch old release:
  * - Developer: `git checkout 0.XY-stable`
@@ -43,26 +45,31 @@
  * there is a version higher than XY
  *
  * Important tags:
- * If tag v0.XY.0-rcZ is present on the commit then publish to npm with version 0.XY.0-rcZ and tag next
+ * If tag v0.XY.0-rc.Z is present on the commit then publish to npm with version 0.XY.0-rc.Z and tag next
  * If tag v0.XY.Z is present on the commit then publish to npm with version 0.XY.Z and no tag (npm will consider it latest)
  */
 
 /*eslint-disable no-undef */
 require('shelljs/global');
 
-const buildBranch = process.env.CIRCLE_BRANCH;
+const buildTag = process.env.CIRCLE_TAG;
 const otp = process.env.NPM_CONFIG_OTP;
 
-let branchVersion;
-if (buildBranch.indexOf('-stable') !== -1) {
-  branchVersion = buildBranch.slice(0, buildBranch.indexOf('-stable'));
-} else {
-  echo('Error: We publish only from stable branches');
-  exit(0);
+if (!buildTag) {
+  echo('Error: We publish only from git tags');
+  exit(1);
+}
+
+let match = buildTag.match(/^v(\d+\.\d+)\.\d+(?:-.+)?$/);
+if (!match) {
+  echo('Error: We publish only from release version git tags');
+  exit(1);
 }
+// 0.33
+let [, branchVersion] = match;
 
 // 34c034298dc9cad5a4553964a5a324450fda0385
-const currentCommit = exec('git rev-parse HEAD', {silent: true}).stdout.trim();
+const currentCommit = exec('git rev-parse HEAD', { silent: true }).stdout.trim();
 // [34c034298dc9cad5a4553964a5a324450fda0385, refs/heads/0.33-stable, refs/tags/latest, refs/tags/v0.33.1, refs/tags/v0.34.1-rc]
 const tagsWithVersion = exec(`git ls-remote origin | grep ${currentCommit}`, {
   silent: true,
diff --git a/scripts/react-native-xcode.sh b/scripts/react-native-xcode.sh
index cb0a4168148df5..ca13c9626e1d11 100755
--- a/scripts/react-native-xcode.sh
+++ b/scripts/react-native-xcode.sh
@@ -1,13 +1,27 @@
 #!/bin/bash
-# Copyright (c) 2015-present, Facebook, Inc.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
-
+#
 # Bundle React Native app's code and image assets.
 # This script is supposed to be invoked as part of Xcode build process
 # and relies on environment variables (including PWD) set by Xcode
 
+# Print commands before executing them (useful for troubleshooting)
+set -x
+DEST=$CONFIGURATION_BUILD_DIR/$UNLOCALIZED_RESOURCES_FOLDER_PATH
+
+# Enables iOS devices to get the IP address of the machine running Metro Bundler
+if [[ "$CONFIGURATION" = *Debug* && ! "$PLATFORM_NAME" == *simulator ]]; then
+  IP=$(ipconfig getifaddr en0)
+  if [ -z "$IP" ]; then
+    IP=$(ifconfig | grep 'inet ' | grep -v ' 127.' | cut -d\   -f2  | awk 'NR==1{print $1}')
+  fi
+
+  echo "$IP" > "$DEST/ip.txt"
+fi
+
 if [[ "$SKIP_BUNDLING" ]]; then
   echo "SKIP_BUNDLING enabled; skipping."
   exit 0;
@@ -86,7 +100,7 @@ nodejs_not_found()
   exit 2
 }
 
-type $NODE_BINARY >/dev/null 2>&1 || nodejs_not_found
+type "$NODE_BINARY" >/dev/null 2>&1 || nodejs_not_found
 
 # Print commands before executing them (useful for troubleshooting)
 set -x
@@ -112,7 +126,7 @@ case "$PLATFORM_NAME" in
     ;;
 esac
 
-$NODE_BINARY "$CLI_PATH" $BUNDLE_COMMAND \
+"$NODE_BINARY" "$CLI_PATH" $BUNDLE_COMMAND \
   $CONFIG_ARG \
   --entry-file "$ENTRY_FILE" \
   --platform "$BUNDLE_PLATFORM" \
diff --git a/scripts/run-android-ci-instrumentation-tests.js b/scripts/run-android-ci-instrumentation-tests.js
index 9a87de4f83ab50..e4812b004166dc 100644
--- a/scripts/run-android-ci-instrumentation-tests.js
+++ b/scripts/run-android-ci-instrumentation-tests.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/scripts/run-android-emulator.sh b/scripts/run-android-emulator.sh
index d2c6390d952381..b1d28e56f46cf4 100755
--- a/scripts/run-android-emulator.sh
+++ b/scripts/run-android-emulator.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Runs an Android emulator locally.
 # If there already is a running emulator, this just uses that.
 # The only reason to use this config is that it represents a known-good
diff --git a/scripts/run-android-local-integration-tests.sh b/scripts/run-android-local-integration-tests.sh
index a85d02be37cfa2..80286b00c8f031 100755
--- a/scripts/run-android-local-integration-tests.sh
+++ b/scripts/run-android-local-integration-tests.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Runs all Android integration tests locally.
 # See http://facebook.github.io/react-native/docs/testing.html
 
diff --git a/scripts/run-android-local-unit-tests.sh b/scripts/run-android-local-unit-tests.sh
index 31daf6aef2e215..6efcd40097a2a1 100755
--- a/scripts/run-android-local-unit-tests.sh
+++ b/scripts/run-android-local-unit-tests.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Runs all Android unit tests locally.
 # See http://facebook.github.io/react-native/docs/testing.html
 
diff --git a/scripts/run-ci-e2e-tests.js b/scripts/run-ci-e2e-tests.js
index a268db08949528..2fae87192fcfd9 100644
--- a/scripts/run-ci-e2e-tests.js
+++ b/scripts/run-ci-e2e-tests.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -216,6 +216,7 @@ try {
             `"${scheme}"`,
             '-sdk',
             sdk,
+            '-UseModernBuildSystem=NO',
             'test',
           ].join(' ') +
             ' | ' +
diff --git a/scripts/run-instrumentation-tests-via-adb-shell.sh b/scripts/run-instrumentation-tests-via-adb-shell.sh
index 5a9a976a97da4e..7b0e0e5de0d938 100755
--- a/scripts/run-instrumentation-tests-via-adb-shell.sh
+++ b/scripts/run-instrumentation-tests-via-adb-shell.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # Python script to run instrumentation tests, copied from https://github.com/circleci/circle-dummy-android
 # Example: ./scripts/run-android-instrumentation-tests.sh com.facebook.react.tests com.facebook.react.tests.ReactPickerTestCase
 #
@@ -24,7 +28,7 @@ test_class = None
 
 if len(sys.argv) > 2:
   test_class = sys.argv[2]
-  
+
 def update():
   # prevent CircleCI from killing the process for inactivity
   while not done:
@@ -38,10 +42,10 @@ t.start()
 def run():
   sp.Popen(['adb', 'wait-for-device']).communicate()
   if (test_class != None):
-    p = sp.Popen('adb shell am instrument -w -e class %s %s/android.support.test.runner.AndroidJUnitRunner' 
+    p = sp.Popen('adb shell am instrument -w -e class %s %s/android.support.test.runner.AndroidJUnitRunner'
       % (test_class, test_app), shell=True, stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
   else :
-    p = sp.Popen('adb shell am instrument -w %s/android.support.test.runner.AndroidJUnitRunner' 
+    p = sp.Popen('adb shell am instrument -w %s/android.support.test.runner.AndroidJUnitRunner'
       % (test_app), shell=True, stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
   return p.communicate()
 
diff --git a/scripts/sync-css-layout.sh b/scripts/sync-css-layout.sh
index 6c2f2f3c01f2a4..d38f0ffe2564fa 100755
--- a/scripts/sync-css-layout.sh
+++ b/scripts/sync-css-layout.sh
@@ -1,4 +1,9 @@
 #!/usr/bin/env bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 
 function usage {
   echo "usage: sync-css-layout.sh <pathToGithubRepo> <pathToFbSourceRepo>";
diff --git a/scripts/test-manual-e2e.sh b/scripts/test-manual-e2e.sh
index 09c73c0d9c5e90..84affa42d51cd4 100755
--- a/scripts/test-manual-e2e.sh
+++ b/scripts/test-manual-e2e.sh
@@ -1,4 +1,8 @@
-#! /bin/bash
+#!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 JAVA_VERSION="1.7"
 
@@ -8,16 +12,16 @@ BLUE="\033[0;35m"
 ENDCOLOR="\033[0m"
 
 error() {
-    echo -e $RED"$@"$ENDCOLOR
+    echo -e "$RED""$*""$ENDCOLOR"
     exit 1
 }
 
 success() {
-    echo -e $GREEN"$@"$ENDCOLOR
+    echo -e "$GREEN""$*""$ENDCOLOR"
 }
 
 info() {
-    echo -e $BLUE"$@"$ENDCOLOR
+    echo -e "$BLUE""$*""$ENDCOLOR"
 }
 
 PACKAGE_VERSION=$(cat package.json \
diff --git a/scripts/try-n-times.js b/scripts/try-n-times.js
index 1be7209360b6f1..13c1956efbfd3f 100644
--- a/scripts/try-n-times.js
+++ b/scripts/try-n-times.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
@@ -7,8 +7,6 @@
  * @format
  */
 
-/* globals echo:false */
-
 'use strict';
 
 /**
diff --git a/scripts/validate-android-device-env.sh b/scripts/validate-android-device-env.sh
index 35e7d87d321cda..cfb51c9c58e731 100755
--- a/scripts/validate-android-device-env.sh
+++ b/scripts/validate-android-device-env.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This script validates that the Android environment is set up to run
 # tests on a device or emulator (as opposed to a plain Java environment).
 
@@ -24,8 +28,9 @@ fi
 
 while :
 do
-    BOOTANIM=`adb -e shell getprop init.svc.bootanim`
-    if [ -n `echo $BOOTANIM | grep stopped` ]; then
+    BOOTANIM=$(adb -e shell getprop init.svc.bootanim)
+    # shellcheck disable=SC2143
+    if [[ -n $(echo "$BOOTANIM" | grep stopped) ]]; then
         break
     fi
     echo "Waiting for the emulator to finish booting..."
diff --git a/scripts/validate-android-sdk.sh b/scripts/validate-android-sdk.sh
index 64ab285fd7c9e2..8480235dbb3dfe 100755
--- a/scripts/validate-android-sdk.sh
+++ b/scripts/validate-android-sdk.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This script validates that the Android SDK is installed correctly.
 # This means setting ANDROID_HOME and adding its subdirectories to PATH.
 # If the Android SDK is not installed correctly, this script exits
@@ -48,4 +52,4 @@ if [ -z `which adb` ]; then
   echo "See https://facebook.github.io/react-native/docs/getting-started.html for instructions."
   exit 1
 fi
-  
+
diff --git a/scripts/validate-android-test-env.sh b/scripts/validate-android-test-env.sh
index a4b97c6d0f0d4e..8babcb3131d44f 100755
--- a/scripts/validate-android-test-env.sh
+++ b/scripts/validate-android-test-env.sh
@@ -1,5 +1,9 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This script validates that Android is set up correctly for the
 # testing environment.
 #
@@ -48,11 +52,8 @@ else
   fi
 fi
 
-# BUILD_TOOLS_VERSION is in a format like "23.0.1"
-BUILD_TOOLS_VERSION=`grep buildToolsVersion $(dirname $0)/../ReactAndroid/build.gradle | sed 's/^[^"]*\"//' | sed 's/"//'`
-
 # MAJOR is something like "23"
-MAJOR=`echo $BUILD_TOOLS_VERSION | sed 's/\..*//'`
+MAJOR=`grep compileSdkVersion $(dirname $0)/../ReactAndroid/build.gradle | sed 's/[^[:digit:]]//g'`
 
 # Check that we have the right major version of the Android SDK.
 PLATFORM_DIR="$ANDROID_HOME/platforms/android-$MAJOR"
@@ -70,15 +71,15 @@ if [ ! -e "$PLATFORM_DIR" ]; then
 fi
 
 # Check that we have the right version of the build tools.
-BT_DIR="$ANDROID_HOME/build-tools/$BUILD_TOOLS_VERSION"
+BT_DIR="$ANDROID_HOME/build-tools/$ANDROID_SDK_BUILD_TOOLS_REVISION"
 if [ ! -e "$BT_DIR" ]; then
-  echo "Error: could not find version $BUILD_TOOLS_VERSION of the Android build tools."
+  echo "Error: could not find version $ANDROID_SDK_BUILD_TOOLS_REVISION of the Android build tools."
   echo "Specifically, the directory $BT_DIR does not exist."
   echo "You probably need to explicitly install the correct version of the Android SDK Build Tools from within Android Studio."
   echo "See https://facebook.github.io/react-native/docs/getting-started.html for details."
   echo "If you are using Android SDK Tools from the command line, you may need to run:"
   echo
-  echo "  sdkmanager \"platform-tools\" \"build-tools;android-$BUILD_TOOLS_VERSION\""
+  echo "  sdkmanager \"platform-tools\" \"build-tools;android-$ANDROID_SDK_BUILD_TOOLS_REVISION\""
   echo
   echo "Check out https://developer.android.com/studio/command-line/sdkmanager.html for details."
   exit 1
@@ -107,7 +108,7 @@ if [ -n "$(which csrutil)" ]; then
     exit 1
   fi
 fi
-  
+
 if [ -z "$JAVA_HOME" ]; then
   echo "Error: \$JAVA_HOME is not configured."
   echo "Try adding export JAVA_HOME=\$(/usr/libexec/java_home) to your .bashrc or equivalent."
diff --git a/scripts/validate-ios-test-env.sh b/scripts/validate-ios-test-env.sh
index d52bb9d7552300..ee25a3ea2a3c17 100755
--- a/scripts/validate-ios-test-env.sh
+++ b/scripts/validate-ios-test-env.sh
@@ -1,10 +1,14 @@
 #!/bin/bash
-
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
 # This script validates that iOS is set up correctly for the
 # testing environment.
 #
 # In particular, it checks that the minimum required Xcode version is installed.
-# It also checks that the correct Node version is installed. Node 10 is not fully 
+# It also checks that the correct Node version is installed. Node 10 is not fully
 # supported at the time and Node 6 is no longer supported.
 
 # Function used to compare dot seperated version numbers
@@ -22,21 +26,14 @@ NODE_VERSION="$(command node --version | sed 's/[-/a-zA-Z]//g' |sed 's/.\{2\}$//
 
 if (( $(echo "${NODE_VERSION} <= 6.0" | bc -l) )); then
   echo "Node ${NODE_VERSION} detected. This version of Node is not supported."
-  echo "Note: Node 10 is not fully supported at the time and Node 6 is no longer supported."  
-  echo "See https://nodejs.org/en/download/ for instructions."
-  exit 1
-fi
-
-if (( $(echo "${NODE_VERSION} == 10.0" | bc -l) )); then
-  echo "Node ${NODE_VERSION} detected. This version of Node is not fully supported at this time."
-  echo "See https://github.com/facebook/react-native/issues/19229 for more information."
+  echo "See https://facebook.github.io/react-native/docs/getting-started.html for instructions."
   exit 1
 fi
 
 # Check that Xcode is installed.
 if [ -z "$(which xcodebuild)" ]; then
   echo "Could not find Xcode build tools. Please check your Xcode install."
-  echo "See http://facebook.github.io/react-native/docs/getting-started.html for instructions."
+  echo "See https://facebook.github.io/react-native/docs/getting-started.html for instructions."
   exit 1
 fi
 
@@ -46,6 +43,6 @@ XCODE_VERSION="$(command xcodebuild -version | sed '$ d' | sed 's/[-/a-zA-Z]//g'
 if (version_gt $MIN_XCODE_VERSION $XCODE_VERSION) && [ "$XCODE_VERSION" != "$MIN_XCODE_VERSION" ]; then
   echo "Xcode ${XCODE_VERSION} detected. React Native requires ${MIN_XCODE_VERSION} or newer."
   echo "Older versions of Xcode may cause cryptic build errors."
-  echo "See http://facebook.github.io/react-native/docs/getting-started.html for instructions."
+  echo "See https://facebook.github.io/react-native/docs/getting-started.html for instructions."
   exit 1
 fi
diff --git a/scripts/versiontemplates/RCTVersion.m.template b/scripts/versiontemplates/RCTVersion.m.template
index a550fb3216014d..cfc4d668281e49 100644
--- a/scripts/versiontemplates/RCTVersion.m.template
+++ b/scripts/versiontemplates/RCTVersion.m.template
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/scripts/versiontemplates/ReactNativeVersion.java.template b/scripts/versiontemplates/ReactNativeVersion.java.template
index 12d55c3db4df0f..94d103f10002a9 100644
--- a/scripts/versiontemplates/ReactNativeVersion.java.template
+++ b/scripts/versiontemplates/ReactNativeVersion.java.template
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/scripts/versiontemplates/ReactNativeVersion.js.template b/scripts/versiontemplates/ReactNativeVersion.js.template
index 80f4b280a86fc6..9e05c12fd81042 100644
--- a/scripts/versiontemplates/ReactNativeVersion.js.template
+++ b/scripts/versiontemplates/ReactNativeVersion.js.template
@@ -1,7 +1,7 @@
 /**
  * @generated by scripts/bump-oss-version.js
  *
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/settings.gradle b/settings.gradle
index a2cbf76aa6ad32..228c0b3e8cdb69 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,6 +1,8 @@
-// Copyright (c) 2004-present, Facebook, Inc.
+// Copyright (c) Facebook, Inc. and its affiliates.
 
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the root directory of this source tree.
 
-include ':ReactAndroid', ':processor',':RNTester:android:app'
+include ':ReactAndroid'
+include ':processor'
+include ':RNTester:android:app'
diff --git a/setupBabel.js b/setupBabel.js
index 7c6784f7901861..f047a7e442fb80 100644
--- a/setupBabel.js
+++ b/setupBabel.js
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
diff --git a/stubs/glog/logging.h b/stubs/glog/logging.h
index 0fec417543e73b..dc12d264e99d1b 100644
--- a/stubs/glog/logging.h
+++ b/stubs/glog/logging.h
@@ -1,6 +1,7 @@
 // TODO: Use actual glog
 // TODO: Using actual glog non-trivial as it uses Desktop only APIs
 // TODO: Maybe implement glog header in terms of Windows' TraceLoggingProvider.h?
+// TODO: Implement the minimum necessary macros to build, don't pull over all of the glog data since we can't ship it in Devmain
 
 #pragma once
 #include <iostream>
@@ -8,10 +9,14 @@
 #define CHECK(b) !(b) && (std::abort(), true) && std::cerr
 #define DCHECK(b) !(b) && (std::abort(), true) && std::cerr
 
+#define CHECK_GE(val1, val2) CHECK((val1) >= (val2))
+
 #ifdef DEBUG
 #define DCHECK_GT(v1, v2) CHECK((v1) > (v2))
+#define DCHECK_LE(v1, v2) CHECK((v1) <= (v2))
 #else
 #define DCHECK_GT(v1, v2)
+#define DCHECK_LE(v1, v2)
 #endif
 
 #ifdef DEBUG
diff --git a/template/android/app/src/debug/AndroidManifest.xml b/template/android/app/src/debug/AndroidManifest.xml
new file mode 100644
index 00000000000000..1fce564881ff37
--- /dev/null
+++ b/template/android/app/src/debug/AndroidManifest.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+    <application tools:targetApi="28" tools:ignore="GoogleAppIndexingWarning" android:networkSecurityConfig="@xml/react_native_config" />
+</manifest>
\ No newline at end of file
diff --git a/template/android/app/src/debug/res/xml-v28/react_native_config.xml b/template/android/app/src/debug/res/xml-v28/react_native_config.xml
new file mode 100644
index 00000000000000..ba4b23070be6cc
--- /dev/null
+++ b/template/android/app/src/debug/res/xml-v28/react_native_config.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+  <domain-config cleartextTrafficPermitted="true">
+    <domain includeSubdomains="false">localhost</domain>
+    <domain includeSubdomains="false">10.0.2.2</domain>
+    <domain includeSubdomains="false">10.0.3.2</domain>
+  </domain-config>
+</network-security-config>
diff --git a/third-party-podspecs/DoubleConversion.podspec b/third-party-podspecs/DoubleConversion.podspec
index 2ea6c84a4b02b6..97a80401fe702b 100644
--- a/third-party-podspecs/DoubleConversion.podspec
+++ b/third-party-podspecs/DoubleConversion.podspec
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 Pod::Spec.new do |spec|
   spec.name = 'DoubleConversion'
   spec.version = '1.1.6'
diff --git a/third-party-podspecs/Folly.podspec b/third-party-podspecs/Folly.podspec
index 6f1ee96dbe772e..4fb9d5123decc9 100644
--- a/third-party-podspecs/Folly.podspec
+++ b/third-party-podspecs/Folly.podspec
@@ -1,6 +1,11 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 Pod::Spec.new do |spec|
   spec.name = 'Folly'
-  spec.version = '2016.10.31.00'
+  spec.version = '2018.10.22.00'
   spec.license = { :type => 'Apache License, Version 2.0' }
   spec.homepage = 'https://github.com/facebook/folly'
   spec.summary = 'An open-source C++ library developed and used at Facebook.'
@@ -12,18 +17,31 @@ Pod::Spec.new do |spec|
   spec.dependency 'DoubleConversion'
   spec.dependency 'glog'
   spec.compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1'
-  spec.source_files = 'folly/Bits.cpp',
+  spec.source_files = 'folly/String.cpp',
                       'folly/Conv.cpp',
                       'folly/Demangle.cpp',
-                      'folly/StringBase.cpp',
+                      'folly/Format.cpp',
+                      'folly/ScopeGuard.cpp',
                       'folly/Unicode.cpp',
                       'folly/dynamic.cpp',
                       'folly/json.cpp',
-                      'folly/portability/BitsFunctexcept.cpp',
-                      'folly/detail/MallocImpl.cpp'
+                      'folly/json_pointer.cpp',
+                      'folly/container/detail/F14Table.cpp',
+                      'folly/detail/Demangle.cpp',
+                      'folly/hash/SpookyHashV2.cpp',
+                      'folly/lang/Assume.cpp',
+                      'folly/lang/ColdClass.cpp',
+                      'folly/memory/detail/MallocImpl.cpp'
   # workaround for https://github.com/facebook/react-native/issues/14326
   spec.preserve_paths = 'folly/*.h',
+                        'folly/container/*.h',
+                        'folly/container/detail/*.h',
                         'folly/detail/*.h',
+                        'folly/functional/*.h',
+                        'folly/hash/*.h',
+                        'folly/lang/*.h',
+                        'folly/memory/*.h',
+                        'folly/memory/detail/*.h',
                         'folly/portability/*.h'
   spec.libraries           = "stdc++"
   spec.pod_target_xcconfig = { "USE_HEADERMAP" => "NO",
diff --git a/third-party-podspecs/glog.podspec b/third-party-podspecs/glog.podspec
index bc4bb1e182cf20..b5656e586a2e4b 100644
--- a/third-party-podspecs/glog.podspec
+++ b/third-party-podspecs/glog.podspec
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 Pod::Spec.new do |spec|
   spec.name = 'glog'
   spec.version = '0.3.5'
diff --git a/tools/build_defs/fb_native_wrapper.bzl b/tools/build_defs/fb_native_wrapper.bzl
new file mode 100644
index 00000000000000..3d246dee12c3cb
--- /dev/null
+++ b/tools/build_defs/fb_native_wrapper.bzl
@@ -0,0 +1,109 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+fb_native = struct(
+    android_aar = native.android_aar,
+    android_app_modularity = native.android_app_modularity,
+    android_binary = native.android_binary,
+    android_build_config = native.android_build_config,
+    android_bundle = native.android_bundle,
+    android_instrumentation_apk = native.android_instrumentation_apk,
+    android_instrumentation_test = native.android_instrumentation_test,
+    android_library = native.android_library,
+    android_manifest = native.android_manifest,
+    android_prebuilt_aar = native.android_prebuilt_aar,
+    android_resource = native.android_resource,
+    apk_genrule = native.apk_genrule,
+    apple_asset_catalog = native.apple_asset_catalog,
+    apple_binary = native.apple_binary,
+    apple_bundle = native.apple_bundle,
+    apple_library = native.apple_library,
+    apple_package = native.apple_package,
+    apple_resource = native.apple_resource,
+    apple_test = native.apple_test,
+    cgo_library = native.cgo_library,
+    command_alias = native.command_alias,
+    config_setting = native.config_setting,
+    constraint_setting = native.constraint_setting,
+    constraint_value = native.constraint_value,
+    core_data_model = native.core_data_model,
+    csharp_library = native.csharp_library,
+    cxx_binary = native.cxx_binary,
+    cxx_genrule = native.cxx_genrule,
+    cxx_library = native.cxx_library,
+    cxx_lua_extension = native.cxx_lua_extension,
+    cxx_precompiled_header = native.cxx_precompiled_header,
+    cxx_python_extension = native.cxx_python_extension,
+    cxx_test = native.cxx_test,
+    d_binary = native.d_binary,
+    d_library = native.d_library,
+    d_test = native.d_test,
+    export_file = native.export_file,
+    filegroup = native.filegroup,
+    gen_aidl = native.gen_aidl,
+    genrule = native.genrule,
+    go_binary = native.go_binary,
+    go_library = native.go_library,
+    go_test = native.go_test,
+    groovy_library = native.groovy_library,
+    groovy_test = native.groovy_test,
+    gwt_binary = native.gwt_binary,
+    halide_library = native.halide_library,
+    haskell_binary = native.haskell_binary,
+    haskell_ghci = native.haskell_ghci,
+    haskell_haddock = native.haskell_haddock,
+    haskell_library = native.haskell_library,
+    haskell_prebuilt_library = native.haskell_prebuilt_library,
+    http_archive = native.http_archive,
+    http_file = native.http_file,
+    jar_genrule = native.jar_genrule,
+    java_annotation_processor = native.java_annotation_processor,
+    java_binary = native.java_binary,
+    java_library = native.java_library,
+    java_test = native.java_test,
+    js_bundle = native.js_bundle,
+    js_bundle_genrule = native.js_bundle_genrule,
+    js_library = native.js_library,
+    keystore = native.keystore,
+    kotlin_library = native.kotlin_library,
+    kotlin_test = native.kotlin_test,
+    lua_binary = native.lua_binary,
+    lua_library = native.lua_library,
+    ndk_library = native.ndk_library,
+    ocaml_binary = native.ocaml_binary,
+    ocaml_library = native.ocaml_library,
+    platform = native.platform,
+    prebuilt_apple_framework = native.prebuilt_apple_framework,
+    prebuilt_cxx_library = native.prebuilt_cxx_library,
+    prebuilt_cxx_library_group = native.prebuilt_cxx_library_group,
+    prebuilt_dotnet_library = native.prebuilt_dotnet_library,
+    prebuilt_go_library = native.prebuilt_go_library,
+    prebuilt_jar = native.prebuilt_jar,
+    prebuilt_native_library = native.prebuilt_native_library,
+    prebuilt_ocaml_library = native.prebuilt_ocaml_library,
+    prebuilt_python_library = native.prebuilt_python_library,
+    prebuilt_rust_library = native.prebuilt_rust_library,
+    python_binary = native.python_binary,
+    python_library = native.python_library,
+    python_test = native.python_test,
+    remote_file = native.remote_file,
+    robolectric_test = native.robolectric_test,
+    rust_binary = native.rust_binary,
+    rust_library = native.rust_library,
+    rust_test = native.rust_test,
+    scala_library = native.scala_library,
+    scala_test = native.scala_test,
+    scene_kit_assets = native.scene_kit_assets,
+    sh_binary = native.sh_binary,
+    sh_test = native.sh_test,
+    swift_library = native.swift_library,
+    test_suite = native.test_suite,
+    versioned_alias = native.versioned_alias,
+    worker_tool = native.worker_tool,
+    xcode_postbuild_script = native.xcode_postbuild_script,
+    xcode_prebuild_script = native.xcode_prebuild_script,
+    xcode_workspace_config = native.xcode_workspace_config,
+    zip_file = native.zip_file,
+)
diff --git a/ReactNative/DEFS.bzl b/tools/build_defs/oss/rn_defs.bzl
similarity index 72%
rename from ReactNative/DEFS.bzl
rename to tools/build_defs/oss/rn_defs.bzl
index 1f50344f63f14d..fbf99d0cb90bce 100644
--- a/ReactNative/DEFS.bzl
+++ b/tools/build_defs/oss/rn_defs.bzl
@@ -1,3 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 """Helpers for referring to React Native open source code.
 
 This lets us build React Native:
@@ -22,8 +27,6 @@ GLOG_DEP = "//ReactAndroid/build/third-party-ndk/glog:glog"
 
 INSPECTOR_FLAGS = []
 
-APPLE_JSC_INTERNAL_DEPS = []
-
 APPLE_JSC_DEPS = []
 
 ANDROID_JSC_INTERNAL_DEPS = [
@@ -62,58 +65,61 @@ def rn_xplat_cxx_library(name, **kwargs):
     }
 
     native.cxx_library(
-        name=name,
-        visibility=kwargs.get("visibility", []),
+        name = name,
+        visibility = kwargs.get("visibility", []),
         **new_kwargs
     )
 
 # Example: react_native_target('java/com/facebook/react/common:common')
 def react_native_target(path):
-    return '//ReactAndroid/src/main/' + path
+    return "//ReactAndroid/src/main/" + path
 
 # Example: react_native_xplat_target('bridge:bridge')
 def react_native_xplat_target(path):
-    return '//ReactCommon/' + path
+    return "//ReactCommon/" + path
 
 # Example: react_native_tests_target('java/com/facebook/react/modules:modules')
 def react_native_tests_target(path):
-    return '//ReactAndroid/src/test/' + path
+    return "//ReactAndroid/src/test/" + path
 
 # Example: react_native_integration_tests_target('java/com/facebook/react/testing:testing')
 def react_native_integration_tests_target(path):
-    return '//ReactAndroid/src/androidTest/' + path
+    return "//ReactAndroid/src/androidTest/" + path
 
-# Helper for referring to non-RN code from RN OSS code.
+# Helpers for referring to non-RN code from RN OSS code.
 # Example: react_native_dep('java/com/facebook/systrace:systrace')
 def react_native_dep(path):
-    return '//ReactAndroid/src/main/' + path
+    return "//ReactAndroid/src/main/" + path
 
-# React property preprocessor
-def rn_android_library(name, deps=[], plugins=[], *args, **kwargs):
+# Example: react_native_xplat_dep('java/com/facebook/systrace:systrace')
+def react_native_xplat_dep(path):
+    return "//ReactCommon/" + path
 
+# React property preprocessor
+def rn_android_library(name, deps = [], plugins = [], *args, **kwargs):
     if react_native_target(
-        'java/com/facebook/react/uimanager/annotations:annotations'
-    ) in deps and name != 'processing':
+        "java/com/facebook/react/uimanager/annotations:annotations",
+    ) in deps and name != "processing":
         react_property_plugins = [
             react_native_target(
-                'java/com/facebook/react/processing:processing'
+                "java/com/facebook/react/processing:processing",
             ),
         ]
 
         plugins = list(set(plugins + react_property_plugins))
 
     if react_native_target(
-        'java/com/facebook/react/module/annotations:annotations'
-    ) in deps and name != 'processing':
+        "java/com/facebook/react/module/annotations:annotations",
+    ) in deps and name != "processing":
         react_module_plugins = [
             react_native_target(
-                'java/com/facebook/react/module/processing:processing'
+                "java/com/facebook/react/module/processing:processing",
             ),
         ]
 
         plugins = list(set(plugins + react_module_plugins))
 
-    native.android_library(name=name, deps=deps, plugins=plugins, *args, **kwargs)
+    native.android_library(name = name, deps = deps, plugins = plugins, *args, **kwargs)
 
 def rn_android_binary(*args, **kwargs):
     native.android_binary(*args, **kwargs)
@@ -139,40 +145,40 @@ def rn_prebuilt_native_library(*args, **kwargs):
 def rn_prebuilt_jar(*args, **kwargs):
     native.prebuilt_jar(*args, **kwargs)
 
-def rn_robolectric_test(name, srcs, vm_args=None, *args, **kwargs):
+def rn_robolectric_test(name, srcs, vm_args = None, *args, **kwargs):
     vm_args = vm_args or []
 
     extra_vm_args = [
-        '-XX:+UseConcMarkSweepGC',  # required by -XX:+CMSClassUnloadingEnabled
-        '-XX:+CMSClassUnloadingEnabled',
-        '-XX:ReservedCodeCacheSize=150M',
-        '-Drobolectric.dependency.dir=buck-out/gen/ReactAndroid/src/main/third-party/java/robolectric3/robolectric',
-        '-Dlibraries=buck-out/gen/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/*.jar',
-        '-Drobolectric.logging.enabled=true',
-        '-XX:MaxPermSize=620m',
-        '-Drobolectric.offline=true',
+        "-XX:+UseConcMarkSweepGC",  # required by -XX:+CMSClassUnloadingEnabled
+        "-XX:+CMSClassUnloadingEnabled",
+        "-XX:ReservedCodeCacheSize=150M",
+        "-Drobolectric.dependency.dir=buck-out/gen/ReactAndroid/src/main/third-party/java/robolectric3/robolectric",
+        "-Dlibraries=buck-out/gen/ReactAndroid/src/main/third-party/java/robolectric3/robolectric/*.jar",
+        "-Drobolectric.logging.enabled=true",
+        "-XX:MaxPermSize=620m",
+        "-Drobolectric.offline=true",
     ]
     if native.read_config("user", "use_dev_shm"):
-        extra_vm_args.append('-Djava.io.tmpdir=/dev/shm')
+        extra_vm_args.append("-Djava.io.tmpdir=/dev/shm")
 
     # RN tests use  Powermock, which means they get their own ClassLoaders.
     # Because the yoga native library (or any native library) can only be loaded into one
     # ClassLoader at a time, we need to run each in its own process, hence fork_mode = 'per_test'.
     native.robolectric_test(
-        name=name,
-        use_cxx_libraries=True,
-        cxx_library_whitelist=[
-            '//ReactCommon/yoga:yoga',
-            '//ReactAndroid/src/main/jni/first-party/yogajni:jni',
+        name = name,
+        use_cxx_libraries = True,
+        cxx_library_whitelist = [
+            "//ReactCommon/yoga:yoga",
+            "//ReactAndroid/src/main/jni/first-party/yogajni:jni",
         ],
-        fork_mode='per_test',
-        srcs=srcs,
-        vm_args=vm_args + extra_vm_args,
+        fork_mode = "per_test",
+        srcs = srcs,
+        vm_args = vm_args + extra_vm_args,
         *args,
         **kwargs
     )
 
-def cxx_library(allow_jni_merging=None, **kwargs):
+def cxx_library(allow_jni_merging = None, **kwargs):
     args = {
         k: v
         for k, v in kwargs.items()
@@ -181,18 +187,18 @@ def cxx_library(allow_jni_merging=None, **kwargs):
     native.cxx_library(**args)
 
 def _paths_join(path, *others):
-  """Joins one or more path components."""
-  result = path
-
-  for p in others:
-    if p.startswith("/"):  # absolute
-      result = p
-    elif not result or result.endswith("/"):
-      result += p
-    else:
-      result += "/" + p
-
-  return result
+    """Joins one or more path components."""
+    result = path
+
+    for p in others:
+        if p.startswith("/"):  # absolute
+            result = p
+        elif not result or result.endswith("/"):
+            result += p
+        else:
+            result += "/" + p
+
+    return result
 
 def subdir_glob(glob_specs, exclude = None, prefix = ""):
     """Returns a dict of sub-directory relative paths to full paths.
diff --git a/yarn.lock b/yarn.lock
new file mode 100644
index 00000000000000..8b74f7815add91
--- /dev/null
+++ b/yarn.lock
@@ -0,0 +1,7064 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.0.0-beta.35":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0.tgz#06e2ab19bdb535385559aabb5ba59729482800f8"
+  integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
+"@babel/core@^7.0.0":
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.1.0.tgz#08958f1371179f62df6966d8a614003d11faeb04"
+  integrity sha512-9EWmD0cQAbcXSc+31RIoYgEHx3KQ2CCSMDBhnXrShWvo45TMw+3/55KVxlhkG53kw9tl87DqINgHDgFVhZJV/Q==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@babel/generator" "^7.0.0"
+    "@babel/helpers" "^7.1.0"
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+  integrity sha512-Y3SCjmhSupzFB6wcv1KmmFucH6gDVnI30WjOcicV10ju0cZjak3Jcs67YLIXBrmZYw1xCrVeJPbycFwrqNyxpg==
+  dependencies:
+    regenerator-runtime "^0.12.0"
+
+"@babel/template@^7.0.0", "@babel/template@^7.1.0":
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.1.0.tgz#58cc9572e1bfe24fe1537fdf99d839d53e517e22"
+  integrity sha512-yZ948B/pJrwWGY6VxG6XRFsVTee3IQ7bihq9zFpM00Vydu6z5Xwg0C3J644kxI9WOTzd+62xcIsQ+AT1MGhqhA==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@babel/parser" "^7.1.0"
+    "@babel/types" "^7.0.0"
+
+"@babel/traverse@^7.0.0", "@babel/traverse@^7.1.0":
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.1.0.tgz#503ec6669387efd182c3888c4eec07bcc45d91b2"
+  integrity sha512-bwgln0FsMoxm3pLOgrrnGaXk18sSM9JNf1/nHC/FksmNGFbYnPWY4GYCfLxyP1KRmfsxqkRpfoa6xr6VuuSxdw==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@babel/generator" "^7.0.0"
+    "@babel/helper-function-name" "^7.1.0"
+    "@babel/helper-split-export-declaration" "^7.0.0"
+    "@babel/parser" "^7.1.0"
+    "@babel/types" "^7.0.0"
+    debug "^3.1.0"
+    globals "^11.1.0"
+    lodash "^4.17.10"
+
+"@babel/types@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.0.0.tgz#6e191793d3c854d19c6749989e3bc55f0e962118"
+  integrity sha512-5tPDap4bGKTLPtci2SUl/B7Gv8RnuJFuQoWx26RJobS0fFrz4reUA3JnwIM+HVHEmWE0C1mzKhDtTp8NsWY02Q==
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.17.10"
+    to-fast-properties "^2.0.0"
+
+"@reactions/component@^2.0.2":
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/@reactions/component/-/component-2.0.2.tgz#40f8c1c2c37baabe57a0c944edb9310dc1ec6642"
+
+abab@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.0.tgz#aba0ab4c5eee2d4c79d3487d85450fb2376ebb0f"
+  integrity sha512-sY5AXXVZv4Y1VACTtR11UJCPHHudgY5i26Qj5TypE6DKlIApbwb5uqhXcJ5UUGbvZNRh7EeIoW+LrJumBsKp7w==
+
+abbrev@1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
+  integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
+
+absolute-path@^0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/absolute-path/-/absolute-path-0.0.0.tgz#a78762fbdadfb5297be99b15d35a785b2f095bf7"
+  integrity sha1-p4di+9rftSl76ZsV01p4Wy8JW/c=
+
+accepts@~1.3.3, accepts@~1.3.5:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.5.tgz#eb777df6011723a3b14e8a72c0805c8e86746bd2"
+  integrity sha1-63d99gEXI6OxTopywIBcjoZ0a9I=
+  dependencies:
+    mime-types "~2.1.18"
+    negotiator "0.6.1"
+
+acorn-globals@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-4.3.0.tgz#e3b6f8da3c1552a95ae627571f7dd6923bb54103"
+  integrity sha512-hMtHj3s5RnuhvHPowpBYvJVj3rAar82JiDQHvGs1zO0l10ocX/xEdBShNHTJaboucJUsScghp74pH3s7EnHHQw==
+  dependencies:
+    acorn "^6.0.1"
+    acorn-walk "^6.0.1"
+
+acorn-jsx@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-4.1.1.tgz#e8e41e48ea2fe0c896740610ab6a4ffd8add225e"
+  integrity sha512-JY+iV6r+cO21KtntVvFkD+iqjtdpRUpGqKWgfkCdZq1R+kbreEl8EcdcJR4SmiIgsIQT33s6QzheQ9a275Q8xw==
+  dependencies:
+    acorn "^5.0.3"
+
+acorn-walk@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-6.0.1.tgz#c7827bdbb8e21aa97b609adfa225400d9ae348ba"
+  integrity sha512-PqVQ8c6a3kyqdsUZlC7nljp3FFuxipBRHKu+7C1h8QygBFlzTaDX5HD383jej3Peed+1aDG8HwkfB1Z1HMNPkw==
+
+acorn@^5.0.3, acorn@^5.5.3, acorn@^5.6.0:
+  version "5.7.3"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
+  integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
+
+acorn@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.1.tgz#66e6147e1027704479dc6d9b20d884c572db3cc1"
+  integrity sha512-SiwgrRuRD2D1R6qjwwoopKcCTkmmIWjy1M15Wv+Nk/7VUsBad4P8GOPft2t6coDZG0TuR5dq9o1v0g8wo7F6+A==
+
+ajv-keywords@^3.0.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.2.0.tgz#e86b819c602cf8821ad637413698f1dec021847a"
+  integrity sha1-6GuBnGAs+IIa1jdBNpjx3sAhhHo=
+
+ajv@^5.3.0:
+  version "5.5.2"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
+  integrity sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=
+  dependencies:
+    co "^4.6.0"
+    fast-deep-equal "^1.0.0"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.3.0"
+
+ajv@^6.0.1, ajv@^6.5.0:
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.3.tgz#71a569d189ecf4f4f321224fecb166f071dd90f9"
+  integrity sha512-LqZ9wY+fx3UMiiPd741yB2pj3hhil+hQc8taf4o2QGRFpWgZ2V5C8HA165DY9sS3fJwsk7uT7ZlFEyC3Ig3lLg==
+  dependencies:
+    fast-deep-equal "^2.0.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+ansi-colors@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-1.1.0.tgz#6374b4dd5d4718ff3ce27a671a3b1cad077132a9"
+  integrity sha512-SFKX67auSNoVR38N3L+nvsPjOE0bybKTYbkf5tRvushrAPQ9V75huw0ZxBkKVeRU9kqH3d6HA4xTckbwZ4ixmA==
+  dependencies:
+    ansi-wrap "^0.1.0"
+
+ansi-cyan@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-cyan/-/ansi-cyan-0.1.1.tgz#538ae528af8982f28ae30d86f2f17456d2609873"
+  integrity sha1-U4rlKK+JgvKK4w2G8vF0VtJgmHM=
+  dependencies:
+    ansi-wrap "0.1.0"
+
+ansi-escapes@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-3.1.0.tgz#f73207bb81207d75fd6c83f125af26eea378ca30"
+  integrity sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==
+
+ansi-gray@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-gray/-/ansi-gray-0.1.1.tgz#2962cf54ec9792c48510a3deb524436861ef7251"
+  integrity sha1-KWLPVOyXksSFEKPetSRDaGHvclE=
+  dependencies:
+    ansi-wrap "0.1.0"
+
+ansi-red@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-red/-/ansi-red-0.1.1.tgz#8c638f9d1080800a353c9c28c8a81ca4705d946c"
+  integrity sha1-jGOPnRCAgAo1PJwoyKgcpHBdlGw=
+  dependencies:
+    ansi-wrap "0.1.0"
+
+ansi-regex@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
+  integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
+
+ansi-regex@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
+  integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
+
+ansi-regex@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.0.0.tgz#70de791edf021404c3fd615aa89118ae0432e5a9"
+  integrity sha512-iB5Dda8t/UqpPI/IjsejXu5jOGDrzn41wJyljwPH65VCIbk6+1BzFIMJGFwTNrYXT1CrD+B4l19U7awiQ8rk7w==
+
+ansi-styles@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
+  integrity sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
+
+ansi-styles@^3.2.0, ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
+ansi-wrap@0.1.0, ansi-wrap@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-wrap/-/ansi-wrap-0.1.0.tgz#a82250ddb0015e9a27ca82e82ea603bbfa45efaf"
+  integrity sha1-qCJQ3bABXponyoLoLqYDu/pF768=
+
+ansi@^0.3.0, ansi@~0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/ansi/-/ansi-0.3.1.tgz#0c42d4fb17160d5a9af1e484bace1c66922c1b21"
+  integrity sha1-DELU+xcWDVqa8eSEus4cZpIsGyE=
+
+anymatch@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-2.0.0.tgz#bcb24b4f37934d9aa7ac17b4adaf89e7c76ef2eb"
+  integrity sha512-5teOsQWABXHHBFP9y3skS5P3d/WfWXpv3FUpy+LorMrNYaT9pI4oLMQX7jzQ2KklNpGpWHzdCXTDT2Y3XGlZBw==
+  dependencies:
+    micromatch "^3.1.4"
+    normalize-path "^2.1.1"
+
+append-transform@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/append-transform/-/append-transform-0.4.0.tgz#d76ebf8ca94d276e247a36bad44a4b74ab611991"
+  integrity sha1-126/jKlNJ24keja61EpLdKthGZE=
+  dependencies:
+    default-require-extensions "^1.0.0"
+
+aproba@^1.0.3:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
+  integrity sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==
+
+are-we-there-yet@~1.1.2:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz#4b35c2944f062a8bfcda66410760350fe9ddfc21"
+  integrity sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==
+  dependencies:
+    delegates "^1.0.0"
+    readable-stream "^2.0.6"
+
+argparse@^1.0.7:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
+  dependencies:
+    sprintf-js "~1.0.2"
+
+arr-diff@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-1.1.0.tgz#687c32758163588fef7de7b36fabe495eb1a399a"
+  integrity sha1-aHwydYFjWI/vfeezb6vklesaOZo=
+  dependencies:
+    arr-flatten "^1.0.1"
+    array-slice "^0.2.3"
+
+arr-diff@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-2.0.0.tgz#8f3b827f955a8bd669697e4a4256ac3ceae356cf"
+  integrity sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=
+  dependencies:
+    arr-flatten "^1.0.1"
+
+arr-diff@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
+  integrity sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=
+
+arr-flatten@^1.0.1, arr-flatten@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/arr-flatten/-/arr-flatten-1.1.0.tgz#36048bbff4e7b47e136644316c99669ea5ae91f1"
+  integrity sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==
+
+arr-union@^2.0.1:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/arr-union/-/arr-union-2.1.0.tgz#20f9eab5ec70f5c7d215b1077b1c39161d292c7d"
+  integrity sha1-IPnqtexw9cfSFbEHexw5Fh0pLH0=
+
+arr-union@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/arr-union/-/arr-union-3.1.0.tgz#e39b09aea9def866a8f206e288af63919bae39c4"
+  integrity sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=
+
+array-equal@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/array-equal/-/array-equal-1.0.0.tgz#8c2a5ef2472fd9ea742b04c77a75093ba2757c93"
+  integrity sha1-jCpe8kcv2ep0KwTHenUJO6J1fJM=
+
+array-filter@~0.0.0:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/array-filter/-/array-filter-0.0.1.tgz#7da8cf2e26628ed732803581fd21f67cacd2eeec"
+  integrity sha1-fajPLiZijtcygDWB/SH2fKzS7uw=
+
+array-includes@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/array-includes/-/array-includes-3.0.3.tgz#184b48f62d92d7452bb31b323165c7f8bd02266d"
+  integrity sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.7.0"
+
+array-map@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/array-map/-/array-map-0.0.0.tgz#88a2bab73d1cf7bcd5c1b118a003f66f665fa662"
+  integrity sha1-iKK6tz0c97zVwbEYoAP2b2ZfpmI=
+
+array-reduce@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/array-reduce/-/array-reduce-0.0.0.tgz#173899d3ffd1c7d9383e4479525dbe278cab5f2b"
+  integrity sha1-FziZ0//Rx9k4PkR5Ul2+J4yrXys=
+
+array-slice@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/array-slice/-/array-slice-0.2.3.tgz#dd3cfb80ed7973a75117cdac69b0b99ec86186f5"
+  integrity sha1-3Tz7gO15c6dRF82sabC5nshhhvU=
+
+array-union@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/array-union/-/array-union-1.0.2.tgz#9a34410e4f4e3da23dea375be5be70f24778ec39"
+  integrity sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=
+  dependencies:
+    array-uniq "^1.0.1"
+
+array-uniq@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/array-uniq/-/array-uniq-1.0.3.tgz#af6ac877a25cc7f74e058894753858dfdb24fdb6"
+  integrity sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=
+
+array-unique@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.2.1.tgz#a1d97ccafcbc2625cc70fadceb36a50c58b01a53"
+  integrity sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=
+
+array-unique@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
+  integrity sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=
+
+arrify@^1.0.0, arrify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
+  integrity sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=
+
+art@^0.10.0:
+  version "0.10.3"
+  resolved "https://registry.yarnpkg.com/art/-/art-0.10.3.tgz#b01d84a968ccce6208df55a733838c96caeeaea2"
+  integrity sha512-HXwbdofRTiJT6qZX/FnchtldzJjS3vkLJxQilc3Xj+ma2MXjY4UAyQ0ls1XZYVnDvVIBiFZbC6QsvtW86TD6tQ==
+
+asap@~2.0.3:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
+  integrity sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=
+
+asn1@~0.2.3:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
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+bplist-creator@0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/bplist-creator/-/bplist-creator-0.0.7.tgz#37df1536092824b87c42f957b01344117372ae45"
+  integrity sha1-N98VNgkoJLh8QvlXsBNEEXNyrkU=
+  dependencies:
+    stream-buffers "~2.2.0"
+
+bplist-parser@0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/bplist-parser/-/bplist-parser-0.1.1.tgz#d60d5dcc20cba6dc7e1f299b35d3e1f95dafbae6"
+  integrity sha1-1g1dzCDLptx+HymbNdPh+V2vuuY=
+  dependencies:
+    big-integer "^1.6.7"
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+braces@^1.8.2:
+  version "1.8.5"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-1.8.5.tgz#ba77962e12dff969d6b76711e914b737857bf6a7"
+  integrity sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=
+  dependencies:
+    expand-range "^1.8.1"
+    preserve "^0.2.0"
+    repeat-element "^1.1.2"
+
+braces@^2.3.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-2.3.2.tgz#5979fd3f14cd531565e5fa2df1abfff1dfaee729"
+  integrity sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==
+  dependencies:
+    arr-flatten "^1.1.0"
+    array-unique "^0.3.2"
+    extend-shallow "^2.0.1"
+    fill-range "^4.0.0"
+    isobject "^3.0.1"
+    repeat-element "^1.1.2"
+    snapdragon "^0.8.1"
+    snapdragon-node "^2.0.1"
+    split-string "^3.0.2"
+    to-regex "^3.0.1"
+
+browser-process-hrtime@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-0.1.2.tgz#425d68a58d3447f02a04aa894187fce8af8b7b8e"
+  integrity sha1-Ql1opY00R/AqBKqJQYf86K+Le44=
+
+browser-resolve@^1.11.3:
+  version "1.11.3"
+  resolved "https://registry.yarnpkg.com/browser-resolve/-/browser-resolve-1.11.3.tgz#9b7cbb3d0f510e4cb86bdbd796124d28b5890af6"
+  integrity sha512-exDi1BYWB/6raKHmDTCicQfTkqwN5fioMFV4j8BsfMU4R2DK/QfZfK7kOVkmWCNANf0snkBzqGqAJBao9gZMdQ==
+  dependencies:
+    resolve "1.1.7"
+
+bser@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/bser/-/bser-2.0.0.tgz#9ac78d3ed5d915804fd87acb158bc797147a1719"
+  integrity sha1-mseNPtXZFYBP2HrLFYvHlxR6Fxk=
+  dependencies:
+    node-int64 "^0.4.0"
+
+buffer-crc32@^0.2.13:
+  version "0.2.13"
+  resolved "https://registry.yarnpkg.com/buffer-crc32/-/buffer-crc32-0.2.13.tgz#0d333e3f00eac50aa1454abd30ef8c2a5d9a7242"
+  integrity sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
+builtin-modules@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
+  integrity sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=
+
+bunyan-debug-stream@^1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/bunyan-debug-stream/-/bunyan-debug-stream-1.1.1.tgz#4740a00b7d5c2d9d1b714925ab0802516040813e"
+  integrity sha512-jJbQ1gXUL6vMmZVdbaTFK1v1sGa7axLrSQQwkB6HU9HCPTzsw2HsKcPHm1vgXZlEck/4IvEuRwg/9+083YelCg==
+  dependencies:
+    colors "^1.0.3"
+    exception-formatter "^1.0.4"
+
+bunyan@^1.8.12:
+  version "1.8.12"
+  resolved "https://registry.yarnpkg.com/bunyan/-/bunyan-1.8.12.tgz#f150f0f6748abdd72aeae84f04403be2ef113797"
+  integrity sha1-8VDw9nSKvdcq6uhPBEA74u8RN5c=
+  optionalDependencies:
+    dtrace-provider "~0.8"
+    moment "^2.10.6"
+    mv "~2"
+    safe-json-stringify "~1"
+
+bytes@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.0.0.tgz#d32815404d689699f85a4ea4fa8755dd13a96048"
+  integrity sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=
+
+cache-base@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
+  integrity sha512-AKcdTnFSWATd5/GCPRxr2ChwIJ85CeyrEyjRHlKxQ56d4XJMGym0uAiKn0xbLOGOl3+yRpOTi484dVCEc5AUzQ==
+  dependencies:
+    collection-visit "^1.0.0"
+    component-emitter "^1.2.1"
+    get-value "^2.0.6"
+    has-value "^1.0.0"
+    isobject "^3.0.1"
+    set-value "^2.0.0"
+    to-object-path "^0.3.0"
+    union-value "^1.0.0"
+    unset-value "^1.0.0"
+
+caller-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
+  integrity sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=
+  dependencies:
+    callsites "^0.2.0"
+
+callsites@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
+  integrity sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=
+
+callsites@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-2.0.0.tgz#06eb84f00eea413da86affefacbffb36093b3c50"
+  integrity sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=
+
+camelcase@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
+  integrity sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=
+
+capture-exit@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/capture-exit/-/capture-exit-1.2.0.tgz#1c5fcc489fd0ab00d4f1ac7ae1072e3173fbab6f"
+  integrity sha1-HF/MSJ/QqwDU8ax64QcuMXP7q28=
+  dependencies:
+    rsvp "^3.3.3"
+
+caseless@~0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
+  integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
+
+chalk@^1.1.1, chalk@^1.1.3:
+  version "1.1.3"
+  resolved "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
+  integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
+  dependencies:
+    ansi-styles "^2.2.1"
+    escape-string-regexp "^1.0.2"
+    has-ansi "^2.0.0"
+    strip-ansi "^3.0.0"
+    supports-color "^2.0.0"
+
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
+  integrity sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
+chardet@^0.4.0:
+  version "0.4.2"
+  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
+  integrity sha1-tUc7M9yXxCTl2Y3IfVXU2KKci/I=
+
+child-process-promise@^2.2.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/child-process-promise/-/child-process-promise-2.2.1.tgz#4730a11ef610fad450b8f223c79d31d7bdad8074"
+  integrity sha1-RzChHvYQ+tRQuPIjx50x172tgHQ=
+  dependencies:
+    cross-spawn "^4.0.2"
+    node-version "^1.0.0"
+    promise-polyfill "^6.0.1"
+
+chownr@^1.0.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.1.tgz#54726b8b8fff4df053c42187e801fb4412df1494"
+  integrity sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g==
+
+ci-info@^1.5.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.6.0.tgz#2ca20dbb9ceb32d4524a683303313f0304b1e497"
+  integrity sha512-vsGdkwSCDpWmP80ncATX7iea5DWQemg1UgCW5J8tqjU3lYw4FBYuj89J0CTVomA7BEfvSZd84GmHko+MxFQU2A==
+
+circular-json@^0.3.1:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
+  integrity sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==
+
+class-utils@^0.3.5:
+  version "0.3.6"
+  resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
+  integrity sha512-qOhPa/Fj7s6TY8H8esGu5QNpMMQxz79h+urzrNYN6mn+9BnxlDGf5QZ+XeCDsxSjPqsSR56XOZOJmpeurnLMeg==
+  dependencies:
+    arr-union "^3.1.0"
+    define-property "^0.2.5"
+    isobject "^3.0.0"
+    static-extend "^0.1.1"
+
+cli-cursor@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
+  integrity sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=
+  dependencies:
+    restore-cursor "^2.0.0"
+
+cli-width@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
+  integrity sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=
+
+cliui@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
+  integrity sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+    wrap-ansi "^2.0.0"
+
+cliui@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.1.0.tgz#348422dbe82d800b3022eef4f6ac10bf2e4d1b49"
+  integrity sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==
+  dependencies:
+    string-width "^2.1.1"
+    strip-ansi "^4.0.0"
+    wrap-ansi "^2.0.0"
+
+co@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
+  integrity sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=
+
+code-point-at@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
+  integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
+
+collection-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
+  integrity sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=
+  dependencies:
+    map-visit "^1.0.0"
+    object-visit "^1.0.0"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
+color-support@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-support/-/color-support-1.1.3.tgz#93834379a1cc9a0c61f82f52f0d04322251bd5a2"
+  integrity sha512-qiBjkpbMLO/HL68y+lh4q0/O1MZFj2RX6X/KmMa3+gJD3z+WwI1ZzDHysvqHGS3mP6mznPckpXmw1nI9cJjyRg==
+
+colors@^1.0.3:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-1.3.2.tgz#2df8ff573dfbf255af562f8ce7181d6b971a359b"
+  integrity sha512-rhP0JSBGYvpcNQj4s5AdShMeE5ahMop96cTeDl/v9qQQm2fYClE2QXZRi8wLzc+GmXSxdIqqbOIAhyObEXDbfQ==
+
+combined-stream@1.0.6:
+  version "1.0.6"
+  resolved "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz#723e7df6e801ac5613113a7e445a9b69cb632818"
+  integrity sha1-cj599ugBrFYTETp+RFqbactjKBg=
+  dependencies:
+    delayed-stream "~1.0.0"
+
+combined-stream@~1.0.6:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.7.tgz#2d1d24317afb8abe95d6d2c0b07b57813539d828"
+  integrity sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==
+  dependencies:
+    delayed-stream "~1.0.0"
+
+commander@^2.15.1, commander@^2.9.0:
+  version "2.18.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.18.0.tgz#2bf063ddee7c7891176981a2cc798e5754bc6970"
+  integrity sha512-6CYPa+JP2ftfRU2qkDK+UTVeQYosOg/2GbcjIcKPHfinyOLPVGXu/ovN86RP49Re5ndJK1N0kuiidFFuepc4ZQ==
+
+commander@~2.13.0:
+  version "2.13.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
+  integrity sha512-MVuS359B+YzaWqjCL/c+22gfryv+mCBPHAv3zyVI2GN8EY6IRP8VwtasXn8jyyhvvq84R4ImN1OKRtcbIasjYA==
+
+commander@~2.17.1:
+  version "2.17.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
+  integrity sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==
+
+commondir@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
+  integrity sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=
+
+component-emitter@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+  integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
+
+compressible@~2.0.14:
+  version "2.0.15"
+  resolved "https://registry.yarnpkg.com/compressible/-/compressible-2.0.15.tgz#857a9ab0a7e5a07d8d837ed43fe2defff64fe212"
+  integrity sha512-4aE67DL33dSW9gw4CI2H/yTxqHLNcxp0yS6jB+4h+wr3e43+1z7vm0HU9qXOH8j+qjKuL8+UtkOxYQSMq60Ylw==
+  dependencies:
+    mime-db ">= 1.36.0 < 2"
+
+compression@^1.7.1:
+  version "1.7.3"
+  resolved "https://registry.yarnpkg.com/compression/-/compression-1.7.3.tgz#27e0e176aaf260f7f2c2813c3e440adb9f1993db"
+  integrity sha512-HSjyBG5N1Nnz7tF2+O7A9XUhyjru71/fwgNb7oIsEVHR0WShfs2tIS/EySLgiTe98aOK18YDlMXpzjCXY/n9mg==
+  dependencies:
+    accepts "~1.3.5"
+    bytes "3.0.0"
+    compressible "~2.0.14"
+    debug "2.6.9"
+    on-headers "~1.0.1"
+    safe-buffer "5.1.2"
+    vary "~1.1.2"
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+concat-stream@^1.6.0:
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
+  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
+  dependencies:
+    buffer-from "^1.0.0"
+    inherits "^2.0.3"
+    readable-stream "^2.2.2"
+    typedarray "^0.0.6"
+
+connect@^3.6.5:
+  version "3.6.6"
+  resolved "https://registry.yarnpkg.com/connect/-/connect-3.6.6.tgz#09eff6c55af7236e137135a72574858b6786f524"
+  integrity sha1-Ce/2xVr3I24TcTWnJXSFi2eG9SQ=
+  dependencies:
+    debug "2.6.9"
+    finalhandler "1.1.0"
+    parseurl "~1.3.2"
+    utils-merge "1.0.1"
+
+console-control-strings@^1.0.0, console-control-strings@~1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
+  integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
+
+convert-source-map@^1.1.0, convert-source-map@^1.4.0, convert-source-map@^1.5.1:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.6.0.tgz#51b537a8c43e0f04dec1993bffcdd504e758ac20"
+  integrity sha512-eFu7XigvxdZ1ETfbgPBohgyQ/Z++C0eEhTor0qRwBw9unw+L0/6V8wkSuGgzdThkiS5lSpdptOQPD8Ak40a+7A==
+  dependencies:
+    safe-buffer "~5.1.1"
+
+copy-descriptor@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
+  integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
+
+core-js@^1.0.0:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
+  integrity sha1-ZSKUwUZR2yj6k70tX/KYOk8IxjY=
+
+core-js@^2.2.2, core-js@^2.4.0, core-js@^2.4.1, core-js@^2.5.0, core-js@^2.5.7:
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.7.tgz#f972608ff0cead68b841a16a932d0b183791814e"
+  integrity sha512-RszJCAxg/PP6uzXVXL6BsxSXx/B05oJAQ2vkJRjyjrEcNVycaqOmNb5OTxZPE3xa5gwZduqza6L9JOCenh/Ecw==
+
+core-util-is@1.0.2, core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+cosmiconfig@^5.0.5:
+  version "5.0.6"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-5.0.6.tgz#dca6cf680a0bd03589aff684700858c81abeeb39"
+  integrity sha512-6DWfizHriCrFWURP1/qyhsiFvYdlJzbCzmtFWh744+KyWsJo5+kPzUZZaMRSSItoYc0pxFX7gEO7ZC1/gN/7AQ==
+  dependencies:
+    is-directory "^0.3.1"
+    js-yaml "^3.9.0"
+    parse-json "^4.0.0"
+
+create-react-class@^15.6.3:
+  version "15.6.3"
+  resolved "https://registry.yarnpkg.com/create-react-class/-/create-react-class-15.6.3.tgz#2d73237fb3f970ae6ebe011a9e66f46dbca80036"
+  integrity sha512-M+/3Q6E6DLO6Yx3OwrWjwHBnvfXXYA7W+dFjt/ZDBemHO1DDZhsalX/NUtnTYclN6GfnBDRh4qRHjcDHmlJBJg==
+  dependencies:
+    fbjs "^0.8.9"
+    loose-envify "^1.3.1"
+    object-assign "^4.1.1"
+
+cross-spawn@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-4.0.2.tgz#7b9247621c23adfdd3856004a823cbe397424d41"
+  integrity sha1-e5JHYhwjrf3ThWAEqCPL45dCTUE=
+  dependencies:
+    lru-cache "^4.0.1"
+    which "^1.2.9"
+
+cross-spawn@^5.0.1, cross-spawn@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
+  integrity sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=
+  dependencies:
+    lru-cache "^4.0.1"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
+cross-spawn@^6.0.0, cross-spawn@^6.0.5:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
+  integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
+  dependencies:
+    nice-try "^1.0.4"
+    path-key "^2.0.1"
+    semver "^5.5.0"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
+cssom@0.3.x, "cssom@>= 0.3.2 < 0.4.0":
+  version "0.3.4"
+  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.4.tgz#8cd52e8a3acfd68d3aed38ee0a640177d2f9d797"
+  integrity sha512-+7prCSORpXNeR4/fUP3rL+TzqtiFfhMvTd7uEqMdgPvLPt4+uzFUeufx5RHjGTACCargg/DiEt/moMQmvnfkog==
+
+cssstyle@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/cssstyle/-/cssstyle-1.1.1.tgz#18b038a9c44d65f7a8e428a653b9f6fe42faf5fb"
+  integrity sha512-364AI1l/M5TYcFH83JnOH/pSqgaNnKmYgKrm0didZMGKWjQB60dymwWy1rKUgL3J1ffdq9xVi2yGLHdSjjSNog==
+  dependencies:
+    cssom "0.3.x"
+
+dashdash@^1.12.0:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
+  integrity sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=
+  dependencies:
+    assert-plus "^1.0.0"
+
+data-urls@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/data-urls/-/data-urls-1.0.1.tgz#d416ac3896918f29ca84d81085bc3705834da579"
+  integrity sha512-0HdcMZzK6ubMUnsMmQmG0AcLQPvbvb47R0+7CCZQCYgcd8OUWG91CG7sM6GoXgjz+WLl4ArFzHtBMy/QqSF4eg==
+  dependencies:
+    abab "^2.0.0"
+    whatwg-mimetype "^2.1.0"
+    whatwg-url "^7.0.0"
+
+debug@2.6.9, debug@^2.1.2, debug@^2.2.0, debug@^2.3.3, debug@^2.6.8, debug@^2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+debug@^3.1.0:
+  version "3.2.5"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.5.tgz#c2418fbfd7a29f4d4f70ff4cea604d4b64c46407"
+  integrity sha512-D61LaDQPQkxJ5AUM2mbSJRbPkNs/TmdmOeLAi1hgDkpDfIfetSrjmWhccwtuResSwMbACjx/xXQofvM9CE/aeg==
+  dependencies:
+    ms "^2.1.1"
+
+decamelize@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
+  integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
+
+decamelize@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-2.0.0.tgz#656d7bbc8094c4c788ea53c5840908c9c7d063c7"
+  integrity sha512-Ikpp5scV3MSYxY39ymh45ZLEecsTdv/Xj2CaQfI8RLMuwi7XvjX9H/fhraiSuU+C5w5NTDu4ZU72xNiZnurBPg==
+  dependencies:
+    xregexp "4.0.0"
+
+decode-uri-component@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
+  integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
+
+deep-extend@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
+  integrity sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
+
+deep-is@~0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
+  integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
+
+default-require-extensions@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/default-require-extensions/-/default-require-extensions-1.0.0.tgz#f37ea15d3e13ffd9b437d33e1a75b5fb97874cb8"
+  integrity sha1-836hXT4T/9m0N9M+GnW1+5eHTLg=
+  dependencies:
+    strip-bom "^2.0.0"
+
+define-properties@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
+  integrity sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==
+  dependencies:
+    object-keys "^1.0.12"
+
+define-property@^0.2.5:
+  version "0.2.5"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-0.2.5.tgz#c35b1ef918ec3c990f9a5bc57be04aacec5c8116"
+  integrity sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=
+  dependencies:
+    is-descriptor "^0.1.0"
+
+define-property@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-1.0.0.tgz#769ebaaf3f4a63aad3af9e8d304c9bbe79bfb0e6"
+  integrity sha1-dp66rz9KY6rTr56NMEybvnm/sOY=
+  dependencies:
+    is-descriptor "^1.0.0"
+
+define-property@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-2.0.2.tgz#d459689e8d654ba77e02a817f8710d702cb16e9d"
+  integrity sha512-jwK2UV4cnPpbcG7+VRARKTZPUWowwXA8bzH5NP6ud0oeAxyYPuGZUAC7hMugpCdz4BeSZl2Dl9k66CHJ/46ZYQ==
+  dependencies:
+    is-descriptor "^1.0.2"
+    isobject "^3.0.1"
+
+del@^2.0.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/del/-/del-2.2.2.tgz#c12c981d067846c84bcaf862cff930d907ffd1a8"
+  integrity sha1-wSyYHQZ4RshLyvhiz/kw2Qf/0ag=
+  dependencies:
+    globby "^5.0.0"
+    is-path-cwd "^1.0.0"
+    is-path-in-cwd "^1.0.0"
+    object-assign "^4.0.1"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+    rimraf "^2.2.8"
+
+delayed-stream@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
+  integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
+
+delegates@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
+  integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
+
+denodeify@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/denodeify/-/denodeify-1.2.1.tgz#3a36287f5034e699e7577901052c2e6c94251631"
+  integrity sha1-OjYof1A05pnnV3kBBSwubJQlFjE=
+
+depd@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
+  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
+
+destroy@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
+  integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
+
+detect-indent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
+  integrity sha1-920GQ1LN9Docts5hnE7jqUdd4gg=
+  dependencies:
+    repeating "^2.0.0"
+
+detect-libc@^1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
+  integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
+
+detect-newline@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-2.1.0.tgz#f41f1c10be4b00e87b5f13da680759f2c5bfd3e2"
+  integrity sha1-9B8cEL5LAOh7XxPaaAdZ8sW/0+I=
+
+detox@9.0.4:
+  version "9.0.4"
+  resolved "https://registry.yarnpkg.com/detox/-/detox-9.0.4.tgz#ff8deeb56464ca0a351b7f9123c86a52dc80d8ef"
+  integrity sha512-2dbMXA2BlJmtx2XWOwMHETsbwKdn9mjto9jrQ2djgmpt3+ulJhWmODmbKCKgtvNuDE5wlfjogvxfoPIv0rzinA==
+  dependencies:
+    bunyan "^1.8.12"
+    bunyan-debug-stream "^1.1.0"
+    child-process-promise "^2.2.0"
+    commander "^2.15.1"
+    fs-extra "^4.0.2"
+    get-port "^2.1.0"
+    ini "^1.3.4"
+    lodash "^4.17.5"
+    minimist "^1.2.0"
+    proper-lockfile "^3.0.2"
+    sanitize-filename "^1.6.1"
+    shell-utils "^1.0.9"
+    tail "^1.2.3"
+    telnet-client "0.15.3"
+    tempfile "^2.0.0"
+    ws "^1.1.1"
+
+diff@^3.2.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+  integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
+
+doctrine@^2.0.2, doctrine@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.1.0.tgz#5cd01fc101621b42c4cd7f5d1a66243716d3f39d"
+  integrity sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==
+  dependencies:
+    esutils "^2.0.2"
+
+dom-walk@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
+  integrity sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg=
+
+domexception@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/domexception/-/domexception-1.0.1.tgz#937442644ca6a31261ef36e3ec677fe805582c90"
+  integrity sha512-raigMkn7CJNNo6Ihro1fzG7wr3fHuYVytzquZKX5n0yizGsTcYgzdIUwj1X9pK0VvjeihV+XiclP+DjwbsSKug==
+  dependencies:
+    webidl-conversions "^4.0.2"
+
+dtrace-provider@~0.8:
+  version "0.8.7"
+  resolved "https://registry.yarnpkg.com/dtrace-provider/-/dtrace-provider-0.8.7.tgz#dc939b4d3e0620cfe0c1cd803d0d2d7ed04ffd04"
+  integrity sha1-3JObTT4GIM/gwc2APQ0tftBP/QQ=
+  dependencies:
+    nan "^2.10.0"
+
+ecc-jsbn@~0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
+  integrity sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=
+  dependencies:
+    jsbn "~0.1.0"
+    safer-buffer "^2.1.0"
+
+ee-first@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
+  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
+
+encodeurl@~1.0.1, encodeurl@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
+  integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
+
+encoding@^0.1.11:
+  version "0.1.12"
+  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
+  integrity sha1-U4tm8+5izRq1HsMjgp0flIDHS+s=
+  dependencies:
+    iconv-lite "~0.4.13"
+
+end-of-stream@^1.1.0:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.1.tgz#ed29634d19baba463b6ce6b80a37213eab71ec43"
+  integrity sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==
+  dependencies:
+    once "^1.4.0"
+
+envinfo@^5.7.0:
+  version "5.10.0"
+  resolved "https://registry.yarnpkg.com/envinfo/-/envinfo-5.10.0.tgz#503a9774ae15b93ea68bdfae2ccd6306624ea6df"
+  integrity sha512-rXbzXWvnQxy+TcqZlARbWVQwgGVVouVJgFZhLVN5htjLxl1thstrP2ZGi0pXC309AbK7gVOPU+ulz/tmpCI7iw==
+
+error-ex@^1.2.0, error-ex@^1.3.1:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.2.tgz#b4ac40648107fdcdcfae242f428bea8a14d4f1bf"
+  integrity sha512-7dFHNmqeFSEt2ZBsCriorKnn3Z2pj+fd9kmI6QoWw4//DL+icEBfc0U7qJCisqrTsKTjw4fNFy2pW9OqStD84g==
+  dependencies:
+    is-arrayish "^0.2.1"
+
+errorhandler@^1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/errorhandler/-/errorhandler-1.5.0.tgz#eaba64ca5d542a311ac945f582defc336165d9f4"
+  integrity sha1-6rpkyl1UKjEayUX1gt78M2Fl2fQ=
+  dependencies:
+    accepts "~1.3.3"
+    escape-html "~1.0.3"
+
+es-abstract@^1.10.0, es-abstract@^1.5.1, es-abstract@^1.7.0:
+  version "1.12.0"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.12.0.tgz#9dbbdd27c6856f0001421ca18782d786bf8a6165"
+  integrity sha512-C8Fx/0jFmV5IPoMOFPA9P9G5NtqW+4cOPit3MIuvR2t7Ag2K15EJTpxnHAYTzL+aYQJIESYeXZmDBfOBE1HcpA==
+  dependencies:
+    es-to-primitive "^1.1.1"
+    function-bind "^1.1.1"
+    has "^1.0.1"
+    is-callable "^1.1.3"
+    is-regex "^1.0.4"
+
+es-to-primitive@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.1.1.tgz#45355248a88979034b6792e19bb81f2b7975dd0d"
+  integrity sha1-RTVSSKiJeQNLZ5Lhm7gfK3l13Q0=
+  dependencies:
+    is-callable "^1.1.1"
+    is-date-object "^1.0.1"
+    is-symbol "^1.0.1"
+
+escape-html@~1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
+  integrity sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=
+
+escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+escodegen@^1.9.1:
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.11.0.tgz#b27a9389481d5bfd5bec76f7bb1eb3f8f4556589"
+  integrity sha512-IeMV45ReixHS53K/OmfKAIztN/igDHzTJUhZM3k1jMhIZWjk45SMwAtBsEXiJp3vSPmTcu6CXn7mDvFHRN66fw==
+  dependencies:
+    esprima "^3.1.3"
+    estraverse "^4.2.0"
+    esutils "^2.0.2"
+    optionator "^0.8.1"
+  optionalDependencies:
+    source-map "~0.6.1"
+
+eslint-config-fb-strict@22.1.0:
+  version "22.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-fb-strict/-/eslint-config-fb-strict-22.1.0.tgz#6a81785d45748d6c753442772b84da0aca13c45f"
+  integrity sha512-UFJeCwl7Zg7s3d90PjedcNbjpMBzyojTiF9H6lEJMp/XU8oSlSDzk1UFOz41YqdG2BFyg5xsRbQngquJkTxrxg==
+  dependencies:
+    eslint-config-fbjs "^2.0.1"
+
+eslint-config-fbjs@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/eslint-config-fbjs/-/eslint-config-fbjs-2.0.1.tgz#395896fd740e0e28dc1c2072e3bc982e88247df5"
+  integrity sha512-nZ/JByixNK/8epeQqmrtNCYYMXCjHoPkJwHaHg4aZyZlS62YLttDSWYE6ISGl070V+o6dkFbDALceWaO3Po+Sw==
+
+eslint-config-fbjs@^2.0.1:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-fbjs/-/eslint-config-fbjs-2.1.0.tgz#bfe4f8c2d2282bfe515359553905d830e3a5d12f"
+  integrity sha512-wh7Lveo51V3/SUydWtR2VEU8wNfSHt5V7YzIUKTRkHF3kvkCwFtM6Jgsn+xBNkjxZGpfWgNJN/drk1LLx64Dww==
+
+eslint-plugin-eslint-comments@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-eslint-comments/-/eslint-plugin-eslint-comments-3.0.1.tgz#baafb713584c0de7ee588710720e580bcc28cfbb"
+  integrity sha512-7zU6gCulKVmfG3AZdnvDxzfHaGdvkA8tsLiKbneeI/TlVaulJsRzOyMCctH9QTobKVJ6LIsiJbrkSKkgcFLHxw==
+  dependencies:
+    escape-string-regexp "^1.0.5"
+    ignore "^3.3.8"
+
+eslint-plugin-flowtype@2.43.0:
+  version "2.43.0"
+  resolved "http://registry.npmjs.org/eslint-plugin-flowtype/-/eslint-plugin-flowtype-2.43.0.tgz#47cdac5f01cda53f1c3e8477f0c83fee66a1606e"
+  integrity sha512-gFlHd3b6L28Mm8nbNoK6YtWgJ6STngf8GY3RA5DfeUYU3mRYJcHZ4c70bsBoERnCZy+nGHyus+aJ4jkimSnu5g==
+  dependencies:
+    lodash "^4.15.0"
+
+eslint-plugin-jest@21.8.0:
+  version "21.8.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-jest/-/eslint-plugin-jest-21.8.0.tgz#4f3155e2898c1efb0ce548f3e084e07db5e21c07"
+  integrity sha512-u8+tOrVHHAv9SetdzCghLaBrHyaBLx+6surC+A+VfLy7CfXixTvQnJmD/Ym8mDE6e7wPDZWWgsqb3FGAWh7NTw==
+
+eslint-plugin-prettier@2.6.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.6.0.tgz#33e4e228bdb06142d03c560ce04ec23f6c767dd7"
+  integrity sha512-floiaI4F7hRkTrFe8V2ItOK97QYrX75DjmdzmVITZoAP6Cn06oEDPQRsO6MlHEP/u2SxI3xQ52Kpjw6j5WGfeQ==
+  dependencies:
+    fast-diff "^1.1.1"
+    jest-docblock "^21.0.0"
+
+eslint-plugin-react-native-globals@^0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-react-native-globals/-/eslint-plugin-react-native-globals-0.1.2.tgz#ee1348bc2ceb912303ce6bdbd22e2f045ea86ea2"
+  integrity sha512-9aEPf1JEpiTjcFAmmyw8eiIXmcNZOqaZyHO77wgm0/dWfT/oxC1SrIq8ET38pMxHYrcB6Uew+TzUVsBeczF88g==
+
+eslint-plugin-react-native@3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-react-native/-/eslint-plugin-react-native-3.5.0.tgz#78a5d6aadb11f85d1b114488d1fddfa2bf4fc1fb"
+  integrity sha512-L0qwiBQbG3MVMQk4XVCyyX+9nqJjr9YUmqpJ98Gb+uAmD+xlxT33rDL9ZBQgzMzBxDcUW6WiPcll8j9uXpyLyQ==
+  dependencies:
+    eslint-plugin-react-native-globals "^0.1.1"
+
+eslint-plugin-react@7.8.2:
+  version "7.8.2"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-react/-/eslint-plugin-react-7.8.2.tgz#e95c9c47fece55d2303d1a67c9d01b930b88a51d"
+  integrity sha512-H3ne8ob4Bn6NXSN9N9twsn7t8dyHT5bF/ibQepxIHi6JiPIdC2gXlfYvZYucbdrWio4FxBq7Z4mSauQP+qmMkQ==
+  dependencies:
+    doctrine "^2.0.2"
+    has "^1.0.1"
+    jsx-ast-utils "^2.0.1"
+    prop-types "^15.6.0"
+
+eslint-scope@3.7.1:
+  version "3.7.1"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-3.7.1.tgz#3d63c3edfda02e06e01a452ad88caacc7cdcb6e8"
+  integrity sha1-PWPD7f2gLgbgGkUq2IyqzHzctug=
+  dependencies:
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
+eslint-scope@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-4.0.0.tgz#50bf3071e9338bcdc43331794a0cb533f0136172"
+  integrity sha512-1G6UTDi7Jc1ELFwnR58HV4fK9OQK4S6N985f166xqXxpjU6plxFISJa2Ba9KCQuFa8RCnj/lSFJbHo7UFDBnUA==
+  dependencies:
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
+eslint-utils@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.3.1.tgz#9a851ba89ee7c460346f97cf8939c7298827e512"
+  integrity sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==
+
+eslint-visitor-keys@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
+  integrity sha512-qzm/XxIbxm/FHyH341ZrbnMUpe+5Bocte9xkmFMzPMjRaZMcXww+MpBptFvtU+79L362nqiLhekCxCxDPaUMBQ==
+
+eslint@5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.1.0.tgz#2ed611f1ce163c0fb99e1e0cda5af8f662dff645"
+  integrity sha512-DyH6JsoA1KzA5+OSWFjg56DFJT+sDLO0yokaPZ9qY0UEmYrPA1gEX/G1MnVkmRDsksG4H1foIVz2ZXXM3hHYvw==
+  dependencies:
+    ajv "^6.5.0"
+    babel-code-frame "^6.26.0"
+    chalk "^2.1.0"
+    cross-spawn "^6.0.5"
+    debug "^3.1.0"
+    doctrine "^2.1.0"
+    eslint-scope "^4.0.0"
+    eslint-utils "^1.3.1"
+    eslint-visitor-keys "^1.0.0"
+    espree "^4.0.0"
+    esquery "^1.0.1"
+    esutils "^2.0.2"
+    file-entry-cache "^2.0.0"
+    functional-red-black-tree "^1.0.1"
+    glob "^7.1.2"
+    globals "^11.7.0"
+    ignore "^3.3.3"
+    imurmurhash "^0.1.4"
+    inquirer "^5.2.0"
+    is-resolvable "^1.1.0"
+    js-yaml "^3.11.0"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.3.0"
+    lodash "^4.17.5"
+    minimatch "^3.0.4"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    optionator "^0.8.2"
+    path-is-inside "^1.0.2"
+    pluralize "^7.0.0"
+    progress "^2.0.0"
+    regexpp "^1.1.0"
+    require-uncached "^1.0.3"
+    semver "^5.5.0"
+    string.prototype.matchall "^2.0.0"
+    strip-ansi "^4.0.0"
+    strip-json-comments "^2.0.1"
+    table "^4.0.3"
+    text-table "^0.2.0"
+
+espree@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-4.0.0.tgz#253998f20a0f82db5d866385799d912a83a36634"
+  integrity sha512-kapdTCt1bjmspxStVKX6huolXVV5ZfyZguY1lcfhVVZstce3bqxH9mcLzNn3/mlgW6wQ732+0fuG9v7h0ZQoKg==
+  dependencies:
+    acorn "^5.6.0"
+    acorn-jsx "^4.1.1"
+
+esprima@^3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
+  integrity sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM=
+
+esprima@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
+  integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
+
+esquery@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/esquery/-/esquery-1.0.1.tgz#406c51658b1f5991a5f9b62b1dc25b00e3e5c708"
+  integrity sha512-SmiyZ5zIWH9VM+SRUReLS5Q8a7GxtRdxEBVZpm98rJM7Sb+A9DVCndXfkeFUd3byderg+EbDkfnevfCwynWaNA==
+  dependencies:
+    estraverse "^4.0.0"
+
+esrecurse@^4.1.0:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.2.1.tgz#007a3b9fdbc2b3bb87e4879ea19c92fdbd3942cf"
+  integrity sha512-64RBB++fIOAXPw3P9cy89qfMlvZEXZkqqJkjqqXIvzP5ezRZjW+lPWjw35UX/3EhUPFYbg5ER4JYgDw4007/DQ==
+  dependencies:
+    estraverse "^4.1.0"
+
+estraverse@^4.0.0, estraverse@^4.1.0, estraverse@^4.1.1, estraverse@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
+  integrity sha1-De4/7TH81GlhjOc0IJn8GvoL2xM=
+
+esutils@^2.0.0, esutils@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
+  integrity sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=
+
+etag@~1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
+  integrity sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=
+
+event-target-shim@^1.0.5:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/event-target-shim/-/event-target-shim-1.1.1.tgz#a86e5ee6bdaa16054475da797ccddf0c55698491"
+  integrity sha1-qG5e5r2qFgVEddp5fM3fDFVphJE=
+
+eventemitter3@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
+  integrity sha512-ivIvhpq/Y0uSjcHDcOIccjmYjGLcP09MFGE7ysAwkAvkXfpZlC985pH2/ui64DKazbTW/4kN3yqozUxlXzI6cA==
+
+exception-formatter@^1.0.4:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/exception-formatter/-/exception-formatter-1.0.7.tgz#3291616b86fceabefa97aee6a4708032c6e3b96d"
+  integrity sha512-zV45vEsjytJrwfGq6X9qd1Ll56cW4NC2mhCO6lqwMk4ZpA1fZ6C3UiaQM/X7if+7wZFmCgss3ahp9B/uVFuLRw==
+  dependencies:
+    colors "^1.0.3"
+
+exec-sh@^0.2.0:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.2.2.tgz#2a5e7ffcbd7d0ba2755bdecb16e5a427dfbdec36"
+  integrity sha512-FIUCJz1RbuS0FKTdaAafAByGS0CPvU3R0MeHxgtl+djzCc//F8HakL8GzmVNZanasTbTAY/3DRFA0KpVqj/eAw==
+  dependencies:
+    merge "^1.2.0"
+
+execa@^0.10.0:
+  version "0.10.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.10.0.tgz#ff456a8f53f90f8eccc71a96d11bdfc7f082cb50"
+  integrity sha512-7XOMnz8Ynx1gGo/3hyV9loYNPWM94jG3+3T3Y8tsfSstFmETmENCMU/A/zj8Lyaj1lkgEepKepvd6240tBRvlw==
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
+execa@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
+  integrity sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=
+  dependencies:
+    cross-spawn "^5.0.1"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
+execa@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
+  integrity sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==
+  dependencies:
+    cross-spawn "^6.0.0"
+    get-stream "^4.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
+exit@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
+  integrity sha1-BjJjj42HfMghB9MKD/8aF8uhzQw=
+
+expand-brackets@^0.1.4:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-0.1.5.tgz#df07284e342a807cd733ac5af72411e581d1177b"
+  integrity sha1-3wcoTjQqgHzXM6xa9yQR5YHRF3s=
+  dependencies:
+    is-posix-bracket "^0.1.0"
+
+expand-brackets@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-2.1.4.tgz#b77735e315ce30f6b6eff0f83b04151a22449622"
+  integrity sha1-t3c14xXOMPa27/D4OwQVGiJEliI=
+  dependencies:
+    debug "^2.3.3"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    posix-character-classes "^0.1.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+expand-range@^1.8.1:
+  version "1.8.2"
+  resolved "https://registry.yarnpkg.com/expand-range/-/expand-range-1.8.2.tgz#a299effd335fe2721ebae8e257ec79644fc85337"
+  integrity sha1-opnv/TNf4nIeuujiV+x5ZE/IUzc=
+  dependencies:
+    fill-range "^2.1.0"
+
+expect@^23.6.0:
+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-23.6.0.tgz#1e0c8d3ba9a581c87bd71fb9bc8862d443425f98"
+  integrity sha512-dgSoOHgmtn/aDGRVFWclQyPDKl2CQRq0hmIEoUAuQs/2rn2NcvCWcSCovm6BLeuB/7EZuLGu2QfnR+qRt5OM4w==
+  dependencies:
+    ansi-styles "^3.2.0"
+    jest-diff "^23.6.0"
+    jest-get-type "^22.1.0"
+    jest-matcher-utils "^23.6.0"
+    jest-message-util "^23.4.0"
+    jest-regex-util "^23.3.0"
+
+expect@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-24.0.0-alpha.6.tgz#55f1edb1d73e1b0b58474b4775331480d50839cd"
+  integrity sha512-FcafdwfuHoDPgzVlBrhRVp7s2y5Qd+Jv4nlHtCAlO5b1BWArhZFwc9n1Jp4M8/q5nINICkbSFoA1bmR6czLg3w==
+  dependencies:
+    ansi-styles "^3.2.0"
+    jest-diff "^24.0.0-alpha.6"
+    jest-get-type "^24.0.0-alpha.6"
+    jest-matcher-utils "^24.0.0-alpha.6"
+    jest-message-util "^24.0.0-alpha.6"
+    jest-regex-util "^24.0.0-alpha.6"
+
+extend-shallow@^1.1.2:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-1.1.4.tgz#19d6bf94dfc09d76ba711f39b872d21ff4dd9071"
+  integrity sha1-Gda/lN/AnXa6cR85uHLSH/TdkHE=
+  dependencies:
+    kind-of "^1.1.0"
+
+extend-shallow@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-2.0.1.tgz#51af7d614ad9a9f610ea1bafbb989d6b1c56890f"
+  integrity sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=
+  dependencies:
+    is-extendable "^0.1.0"
+
+extend-shallow@^3.0.0, extend-shallow@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-3.0.2.tgz#26a71aaf073b39fb2127172746131c2704028db8"
+  integrity sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=
+  dependencies:
+    assign-symbols "^1.0.0"
+    is-extendable "^1.0.1"
+
+extend@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
+  integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
+
+external-editor@^2.0.4, external-editor@^2.1.0:
+  version "2.2.0"
+  resolved "http://registry.npmjs.org/external-editor/-/external-editor-2.2.0.tgz#045511cfd8d133f3846673d1047c154e214ad3d5"
+  integrity sha512-bSn6gvGxKt+b7+6TKEv1ZycHleA7aHhRHyAqJyp5pbUFuYYNIzpZnQDk7AsYckyWdEnTeAnay0aCy2aV6iTk9A==
+  dependencies:
+    chardet "^0.4.0"
+    iconv-lite "^0.4.17"
+    tmp "^0.0.33"
+
+extglob@^0.3.1:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/extglob/-/extglob-0.3.2.tgz#2e18ff3d2f49ab2765cec9023f011daa8d8349a1"
+  integrity sha1-Lhj/PS9JqydlzskCPwEdqo2DSaE=
+  dependencies:
+    is-extglob "^1.0.0"
+
+extglob@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/extglob/-/extglob-2.0.4.tgz#ad00fe4dc612a9232e8718711dc5cb5ab0285543"
+  integrity sha512-Nmb6QXkELsuBr24CJSkilo6UHHgbekK5UiZgfE6UHD3Eb27YC6oD+bhcT+tJ6cl8dmsgdQxnWlcry8ksBIBLpw==
+  dependencies:
+    array-unique "^0.3.2"
+    define-property "^1.0.0"
+    expand-brackets "^2.1.4"
+    extend-shallow "^2.0.1"
+    fragment-cache "^0.2.1"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+extsprintf@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
+  integrity sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=
+
+extsprintf@^1.2.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
+  integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
+
+fancy-log@^1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/fancy-log/-/fancy-log-1.3.2.tgz#f41125e3d84f2e7d89a43d06d958c8f78be16be1"
+  integrity sha1-9BEl49hPLn2JpD0G2VjI94vha+E=
+  dependencies:
+    ansi-gray "^0.1.1"
+    color-support "^1.1.3"
+    time-stamp "^1.0.0"
+
+fast-deep-equal@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz#c053477817c86b51daa853c81e059b733d023614"
+  integrity sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=
+
+fast-deep-equal@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
+  integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
+
+fast-diff@^1.1.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.1.2.tgz#4b62c42b8e03de3f848460b639079920695d0154"
+  integrity sha512-KaJUt+M9t1qaIteSvjc6P3RbMdXsNhK61GRftR6SNxqmhthcd9MGIi4T+o0jD8LUSpSnSKXE20nLtJ3fOHxQig==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
+  integrity sha1-1RQsDK7msRifh9OnYREGT4bIu/I=
+
+fast-levenshtein@~2.0.4:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
+  integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
+
+fb-watchman@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-2.0.0.tgz#54e9abf7dfa2f26cd9b1636c588c1afc05de5d58"
+  integrity sha1-VOmr99+i8mzZsWNsWIwa/AXeXVg=
+  dependencies:
+    bser "^2.0.0"
+
+fbjs-css-vars@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/fbjs-css-vars/-/fbjs-css-vars-1.0.1.tgz#836d876e887d702f45610f5ebd2fbeef649527fc"
+  integrity sha512-IM+v/C40MNZWqsLErc32e0TyIk/NhkkQZL0QmjBh6zi1eXv0/GeVKmKmueQX7nn9SXQBQbTUcB8zuexIF3/88w==
+
+fbjs-scripts@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/fbjs-scripts/-/fbjs-scripts-1.0.1.tgz#7d8d09d76e83308bf3b1fc7b4c9c6fd081c5ef64"
+  integrity sha512-x8bfX7k0z5B24Ue0YqjZq/2QxxaKZUNbkGdX//zbQDElMJFqBRrvRi8O3qds7UNNzs78jYqIYCS32Sk/wu5UJg==
+  dependencies:
+    "@babel/core" "^7.0.0"
+    ansi-colors "^1.0.1"
+    babel-preset-fbjs "^3.0.0"
+    core-js "^2.4.1"
+    cross-spawn "^5.1.0"
+    fancy-log "^1.3.2"
+    object-assign "^4.0.1"
+    plugin-error "^0.1.2"
+    semver "^5.1.0"
+    through2 "^2.0.0"
+
+fbjs@^0.8.9:
+  version "0.8.17"
+  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.17.tgz#c4d598ead6949112653d6588b01a5cdcd9f90fdd"
+  integrity sha1-xNWY6taUkRJlPWWIsBpc3Nn5D90=
+  dependencies:
+    core-js "^1.0.0"
+    isomorphic-fetch "^2.1.1"
+    loose-envify "^1.0.0"
+    object-assign "^4.1.0"
+    promise "^7.1.1"
+    setimmediate "^1.0.5"
+    ua-parser-js "^0.7.18"
+
+fbjs@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-1.0.0.tgz#52c215e0883a3c86af2a7a776ed51525ae8e0a5a"
+  integrity sha512-MUgcMEJaFhCaF1QtWGnmq9ZDRAzECTCRAF7O6UZIlAlkTs1SasiX9aP0Iw7wfD2mJ7wDTNfg2w7u5fSCwJk1OA==
+  dependencies:
+    core-js "^2.4.1"
+    fbjs-css-vars "^1.0.0"
+    isomorphic-fetch "^2.1.1"
+    loose-envify "^1.0.0"
+    object-assign "^4.1.0"
+    promise "^7.1.1"
+    setimmediate "^1.0.5"
+    ua-parser-js "^0.7.18"
+
+figures@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/figures/-/figures-2.0.0.tgz#3ab1a2d2a62c8bfb431a0c94cb797a2fce27c962"
+  integrity sha1-OrGi0qYsi/tDGgyUy3l6L84nyWI=
+  dependencies:
+    escape-string-regexp "^1.0.5"
+
+file-entry-cache@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-2.0.0.tgz#c392990c3e684783d838b8c84a45d8a048458361"
+  integrity sha1-w5KZDD5oR4PYOLjISkXYoEhFg2E=
+  dependencies:
+    flat-cache "^1.2.1"
+    object-assign "^4.0.1"
+
+filename-regex@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
+  integrity sha1-wcS5vuPglyXdsQa3XB4wH+LxiyY=
+
+fileset@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/fileset/-/fileset-2.0.3.tgz#8e7548a96d3cc2327ee5e674168723a333bba2a0"
+  integrity sha1-jnVIqW08wjJ+5eZ0FocjozO7oqA=
+  dependencies:
+    glob "^7.0.3"
+    minimatch "^3.0.3"
+
+fill-range@^2.1.0:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-2.2.4.tgz#eb1e773abb056dcd8df2bfdf6af59b8b3a936565"
+  integrity sha512-cnrcCbj01+j2gTG921VZPnHbjmdAf8oQV/iGeV2kZxGSyfYjjTyY79ErsK1WJWMpw6DaApEX72binqJE+/d+5Q==
+  dependencies:
+    is-number "^2.1.0"
+    isobject "^2.0.0"
+    randomatic "^3.0.0"
+    repeat-element "^1.1.2"
+    repeat-string "^1.5.2"
+
+fill-range@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-4.0.0.tgz#d544811d428f98eb06a63dc402d2403c328c38f7"
+  integrity sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+    to-regex-range "^2.1.0"
+
+finalhandler@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.0.tgz#ce0b6855b45853e791b2fcc680046d88253dd7f5"
+  integrity sha1-zgtoVbRYU+eRsvzGgARtiCU91/U=
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.1"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.2"
+    statuses "~1.3.1"
+    unpipe "~1.0.0"
+
+find-cache-dir@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-1.0.0.tgz#9288e3e9e3cc3748717d39eade17cf71fc30ee6f"
+  integrity sha1-kojj6ePMN0hxfTnq3hfPcfww7m8=
+  dependencies:
+    commondir "^1.0.1"
+    make-dir "^1.0.0"
+    pkg-dir "^2.0.0"
+
+find-up@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
+  integrity sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=
+  dependencies:
+    path-exists "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+find-up@^2.0.0, find-up@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
+  integrity sha1-RdG35QbHF93UgndaK3eSCjwMV6c=
+  dependencies:
+    locate-path "^2.0.0"
+
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
+flat-cache@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-1.3.0.tgz#d3030b32b38154f4e3b7e9c709f490f7ef97c481"
+  integrity sha1-0wMLMrOBVPTjt+nHCfSQ9++XxIE=
+  dependencies:
+    circular-json "^0.3.1"
+    del "^2.0.2"
+    graceful-fs "^4.1.2"
+    write "^0.2.1"
+
+flow-bin@^0.86.0:
+  version "0.86.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.86.0.tgz#153a28722b4dc13b7200c74b644dd4d9f4969a11"
+  integrity sha512-ulRvFH3ewGIYwg+qPk/OJXoe3Nhqi0RyR0wqgK0b1NzUDEC6O99zU39MBTickXvlrr6iwRO6Wm4lVGeDmnzbew==
+
+for-in@^1.0.1, for-in@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
+  integrity sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=
+
+for-own@^0.1.4:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/for-own/-/for-own-0.1.5.tgz#5265c681a4f294dabbf17c9509b6763aa84510ce"
+  integrity sha1-UmXGgaTylNq78XyVCbZ2OqhFEM4=
+  dependencies:
+    for-in "^1.0.1"
+
+forever-agent@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
+  integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
+
+form-data@~2.3.2:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.2.tgz#4970498be604c20c005d4f5c23aecd21d6b49099"
+  integrity sha1-SXBJi+YEwgwAXU9cI67NIda0kJk=
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "1.0.6"
+    mime-types "^2.1.12"
+
+fragment-cache@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
+  integrity sha1-QpD60n8T6Jvn8zeZxrxaCr//DRk=
+  dependencies:
+    map-cache "^0.2.2"
+
+fresh@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
+  integrity sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac=
+
+fs-extra@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-1.0.0.tgz#cd3ce5f7e7cb6145883fcae3191e9877f8587950"
+  integrity sha1-zTzl9+fLYUWIP8rjGR6Yd/hYeVA=
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^2.1.0"
+    klaw "^1.0.0"
+
+fs-extra@^4.0.2:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
+  integrity sha512-q6rbdDd1o2mAnQreO7YADIxf/Whx4AHBiRf6d+/cVT8h44ss+lHgxf1FemcqDnQt9X3ct4McHr+JMGlYSsK7Cg==
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
+fs-minipass@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.5.tgz#06c277218454ec288df77ada54a03b8702aacb9d"
+  integrity sha512-JhBl0skXjUPCFH7x6x61gQxrKyXsxB5gcgePLZCwfyCGGsTISMoIeObbrvVeP6Xmyaudw4TT43qV2Gz+iyd2oQ==
+  dependencies:
+    minipass "^2.2.1"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+fsevents@^1.2.3:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-1.2.4.tgz#f41dcb1af2582af3692da36fc55cbd8e1041c426"
+  integrity sha512-z8H8/diyk76B7q5wg+Ud0+CqzcAF3mBBI/bA5ne5zrRUUIvNkJY//D3BqyH571KuAC4Nr7Rw7CjWX4r0y9DvNg==
+  dependencies:
+    nan "^2.9.2"
+    node-pre-gyp "^0.10.0"
+
+function-bind@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
+
+functional-red-black-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
+  integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
+
+gauge@~1.2.5:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/gauge/-/gauge-1.2.7.tgz#e9cec5483d3d4ee0ef44b60a7d99e4935e136d93"
+  integrity sha1-6c7FSD09TuDvRLYKfZnkk14TbZM=
+  dependencies:
+    ansi "^0.3.0"
+    has-unicode "^2.0.0"
+    lodash.pad "^4.1.0"
+    lodash.padend "^4.1.0"
+    lodash.padstart "^4.1.0"
+
+gauge@~2.7.3:
+  version "2.7.4"
+  resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
+  integrity sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=
+  dependencies:
+    aproba "^1.0.3"
+    console-control-strings "^1.0.0"
+    has-unicode "^2.0.0"
+    object-assign "^4.1.0"
+    signal-exit "^3.0.0"
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+    wide-align "^1.1.0"
+
+get-caller-file@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
+  integrity sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==
+
+get-port@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/get-port/-/get-port-2.1.0.tgz#8783f9dcebd1eea495a334e1a6a251e78887ab1a"
+  integrity sha1-h4P53OvR7qSVozThpqJR54iHqxo=
+  dependencies:
+    pinkie-promise "^2.0.0"
+
+get-stream@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
+  integrity sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=
+
+get-stream@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
+  integrity sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==
+  dependencies:
+    pump "^3.0.0"
+
+get-value@^2.0.3, get-value@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
+  integrity sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=
+
+getpass@^0.1.1:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
+  integrity sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=
+  dependencies:
+    assert-plus "^1.0.0"
+
+glob-base@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/glob-base/-/glob-base-0.3.0.tgz#dbb164f6221b1c0b1ccf82aea328b497df0ea3c4"
+  integrity sha1-27Fk9iIbHAscz4Kuoyi0l98Oo8Q=
+  dependencies:
+    glob-parent "^2.0.0"
+    is-glob "^2.0.0"
+
+glob-parent@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-2.0.0.tgz#81383d72db054fcccf5336daa902f182f6edbb28"
+  integrity sha1-gTg9ctsFT8zPUzbaqQLxgvbtuyg=
+  dependencies:
+    is-glob "^2.0.0"
+
+glob@^6.0.1:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-6.0.4.tgz#0f08860f6a155127b2fadd4f9ce24b1aab6e4d22"
+  integrity sha1-DwiGD2oVUSey+t1PnOJLGqtuTSI=
+  dependencies:
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "2 || 3"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2, glob@^7.1.3:
+  version "7.1.3"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
+  integrity sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+global@^4.3.0:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
+  integrity sha1-52mJJopsdMOJCLEwWxD8DjlOnQ8=
+  dependencies:
+    min-document "^2.19.0"
+    process "~0.5.1"
+
+globals@^11.1.0, globals@^11.7.0:
+  version "11.7.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.7.0.tgz#a583faa43055b1aca771914bf68258e2fc125673"
+  integrity sha512-K8BNSPySfeShBQXsahYB/AbbWruVOTyVpgoIDnl8odPpeSfP2J5QO2oLFFdl2j7GfDCtZj2bMKar2T49itTPCg==
+
+globals@^9.18.0:
+  version "9.18.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
+  integrity sha512-S0nG3CLEQiY/ILxqtztTWH/3iRRdyBLw6KMDxnKMchrtbj2OFmehVh0WUCfW3DUrIgx/qFrJPICrq4Z4sTR9UQ==
+
+globby@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-5.0.0.tgz#ebd84667ca0dbb330b99bcfc68eac2bc54370e0d"
+  integrity sha1-69hGZ8oNuzMLmbz8aOrCvFQ3Dg0=
+  dependencies:
+    array-union "^1.0.1"
+    arrify "^1.0.0"
+    glob "^7.0.3"
+    object-assign "^4.0.1"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.3, graceful-fs@^4.1.6, graceful-fs@^4.1.9:
+  version "4.1.11"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
+  integrity sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=
+
+growly@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
+  integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
+
+handlebars@^4.0.3:
+  version "4.0.12"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.0.12.tgz#2c15c8a96d46da5e266700518ba8cb8d919d5bc5"
+  integrity sha512-RhmTekP+FZL+XNhwS1Wf+bTTZpdLougwt5pcgA1tuz6Jcx0fpH/7z0qd71RKnZHBCxIRBHfBOnio4gViPemNzA==
+  dependencies:
+    async "^2.5.0"
+    optimist "^0.6.1"
+    source-map "^0.6.1"
+  optionalDependencies:
+    uglify-js "^3.1.4"
+
+har-schema@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
+  integrity sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=
+
+har-validator@~5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.0.tgz#44657f5688a22cfd4b72486e81b3a3fb11742c29"
+  integrity sha512-+qnmNjI4OfH2ipQ9VQOw23bBd/ibtfbVdK2fYbY4acTDqKTW/YDp9McimZdDbG8iV9fZizUqQMD5xvriB146TA==
+  dependencies:
+    ajv "^5.3.0"
+    har-schema "^2.0.0"
+
+has-ansi@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
+  integrity sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=
+  dependencies:
+    ansi-regex "^2.0.0"
+
+has-flag@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
+  integrity sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
+has-symbols@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
+  integrity sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=
+
+has-unicode@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
+  integrity sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=
+
+has-value@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-0.3.1.tgz#7b1f58bada62ca827ec0a2078025654845995e1f"
+  integrity sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=
+  dependencies:
+    get-value "^2.0.3"
+    has-values "^0.1.4"
+    isobject "^2.0.0"
+
+has-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-1.0.0.tgz#18b281da585b1c5c51def24c930ed29a0be6b177"
+  integrity sha1-GLKB2lhbHFxR3vJMkw7SmgvmsXc=
+  dependencies:
+    get-value "^2.0.6"
+    has-values "^1.0.0"
+    isobject "^3.0.0"
+
+has-values@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-0.1.4.tgz#6d61de95d91dfca9b9a02089ad384bff8f62b771"
+  integrity sha1-bWHeldkd/Km5oCCJrThL/49it3E=
+
+has-values@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-1.0.0.tgz#95b0b63fec2146619a6fe57fe75628d5a39efe4f"
+  integrity sha1-lbC2P+whRmGab+V/51Yo1aOe/k8=
+  dependencies:
+    is-number "^3.0.0"
+    kind-of "^4.0.0"
+
+has@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
+  integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
+  dependencies:
+    function-bind "^1.1.1"
+
+home-or-tmp@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
+  integrity sha1-42w/LSyufXRqhX440Y1fMqeILbg=
+  dependencies:
+    os-homedir "^1.0.0"
+    os-tmpdir "^1.0.1"
+
+home-or-tmp@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-3.0.0.tgz#57a8fe24cf33cdd524860a15821ddc25c86671fb"
+  integrity sha1-V6j+JM8zzdUkhgoVgh3cJchmcfs=
+
+hosted-git-info@^2.1.4:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
+  integrity sha512-7T/BxH19zbcCTa8XkMlbK5lTo1WtgkFi3GvdWEyNuc4Vex7/9Dqbnpsf4JMydcfj9HCg4zUWFTL3Za6lapg5/w==
+
+html-encoding-sniffer@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/html-encoding-sniffer/-/html-encoding-sniffer-1.0.2.tgz#e70d84b94da53aa375e11fe3a351be6642ca46f8"
+  integrity sha512-71lZziiDnsuabfdYiUeWdCVyKuqwWi23L8YeIgV9jSSZHCtb6wB1BKWooH7L3tn4/FuZJMVWyNaIDr4RGmaSYw==
+  dependencies:
+    whatwg-encoding "^1.0.1"
+
+http-errors@~1.6.2:
+  version "1.6.3"
+  resolved "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz#8b55680bb4be283a0b5bf4ea2e38580be1d9320d"
+  integrity sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.3"
+    setprototypeof "1.1.0"
+    statuses ">= 1.4.0 < 2"
+
+http-signature@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
+  integrity sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=
+  dependencies:
+    assert-plus "^1.0.0"
+    jsprim "^1.2.2"
+    sshpk "^1.7.0"
+
+iconv-lite@0.4.23:
+  version "0.4.23"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.23.tgz#297871f63be507adcfbfca715d0cd0eed84e9a63"
+  integrity sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
+iconv-lite@^0.4.17, iconv-lite@^0.4.4, iconv-lite@~0.4.13:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
+  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
+ignore-walk@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.1.tgz#a83e62e7d272ac0e3b551aaa82831a19b69f82f8"
+  integrity sha512-DTVlMx3IYPe0/JJcYP7Gxg7ttZZu3IInhuEhbchuqneY9wWe5Ojy2mXLBaQFUQmo0AW2r3qG7m1mg86js+gnlQ==
+  dependencies:
+    minimatch "^3.0.4"
+
+ignore@^3.3.3, ignore@^3.3.8:
+  version "3.3.10"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.10.tgz#0a97fb876986e8081c631160f8f9f389157f0043"
+  integrity sha512-Pgs951kaMm5GXP7MOvxERINe3gsaVjUWFm+UZPSq9xYriQAksyhg0csnS0KXSNRD5NmNdapXEpjxG49+AKh/ug==
+
+image-size@^0.6.0:
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/image-size/-/image-size-0.6.3.tgz#e7e5c65bb534bd7cdcedd6cb5166272a85f75fb2"
+  integrity sha512-47xSUiQioGaB96nqtp5/q55m0aBQSQdyIloMOc/x+QVTDZLNmXE892IIDrJ0hM1A5vcNUDD5tDffkSP5lCaIIA==
+
+import-local@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/import-local/-/import-local-2.0.0.tgz#55070be38a5993cf18ef6db7e961f5bee5c5a09d"
+  integrity sha512-b6s04m3O+s3CGSbqDIyP4R6aAwAeYlVq9+WUWep6iHa8ETRf9yei1U48C5MmfJmV9AiLYYBKPMq/W+/WRpQmCQ==
+  dependencies:
+    pkg-dir "^3.0.0"
+    resolve-cwd "^2.0.0"
+
+imurmurhash@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
+  integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2, inherits@2.0.3, inherits@^2.0.3, inherits@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
+
+ini@^1.3.4, ini@~1.3.0:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.5.tgz#eee25f56db1c9ec6085e0c22778083f596abf927"
+  integrity sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==
+
+inquirer@^3.0.6:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-3.3.0.tgz#9dd2f2ad765dcab1ff0443b491442a20ba227dc9"
+  integrity sha512-h+xtnyk4EwKvFWHrUYsWErEVR+igKtLdchu+o0Z1RL7VU/jVMFbYir2bp6bAj8efFNxWqHX0dIss6fJQ+/+qeQ==
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.0"
+    cli-cursor "^2.1.0"
+    cli-width "^2.0.0"
+    external-editor "^2.0.4"
+    figures "^2.0.0"
+    lodash "^4.3.0"
+    mute-stream "0.0.7"
+    run-async "^2.2.0"
+    rx-lite "^4.0.8"
+    rx-lite-aggregates "^4.0.8"
+    string-width "^2.1.0"
+    strip-ansi "^4.0.0"
+    through "^2.3.6"
+
+inquirer@^5.2.0:
+  version "5.2.0"
+  resolved "http://registry.npmjs.org/inquirer/-/inquirer-5.2.0.tgz#db350c2b73daca77ff1243962e9f22f099685726"
+  integrity sha512-E9BmnJbAKLPGonz0HeWHtbKf+EeSP93paWO3ZYoUpq/aowXvYGjjCSuashhXPpzbArIjBbji39THkxTz9ZeEUQ==
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.0"
+    cli-cursor "^2.1.0"
+    cli-width "^2.0.0"
+    external-editor "^2.1.0"
+    figures "^2.0.0"
+    lodash "^4.3.0"
+    mute-stream "0.0.7"
+    run-async "^2.2.0"
+    rxjs "^5.5.2"
+    string-width "^2.1.0"
+    strip-ansi "^4.0.0"
+    through "^2.3.6"
+
+interpret@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.1.0.tgz#7ed1b1410c6a0e0f78cf95d3b8440c63f78b8614"
+  integrity sha1-ftGxQQxqDg94z5XTuEQMY/eLhhQ=
+
+invariant@^2.2.2, invariant@^2.2.4:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
+  integrity sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==
+  dependencies:
+    loose-envify "^1.0.0"
+
+invert-kv@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
+  integrity sha1-EEqOSqym09jNFXqO+L+rLXo//bY=
+
+invert-kv@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-2.0.0.tgz#7393f5afa59ec9ff5f67a27620d11c226e3eec02"
+  integrity sha512-wPVv/y/QQ/Uiirj/vh3oP+1Ww+AWehmi1g5fFWGPF6IpCBCDVrhgHRMvrLfdYcwDh3QJbGXDW4JAuzxElLSqKA==
+
+is-accessor-descriptor@^0.1.6:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz#a9e12cb3ae8d876727eeef3843f8a0897b5c98d6"
+  integrity sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-accessor-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz#169c2f6d3df1f992618072365c9b0ea1f6878656"
+  integrity sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==
+  dependencies:
+    kind-of "^6.0.0"
+
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+  integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
+
+is-buffer@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
+
+is-builtin-module@^1.0.0:
+  version "1.0.0"
+  resolved "http://registry.npmjs.org/is-builtin-module/-/is-builtin-module-1.0.0.tgz#540572d34f7ac3119f8f76c30cbc1b1e037affbe"
+  integrity sha1-VAVy0096wxGfj3bDDLwbHgN6/74=
+  dependencies:
+    builtin-modules "^1.0.0"
+
+is-callable@^1.1.1, is-callable@^1.1.3:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
+  integrity sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==
+
+is-ci@^1.0.10:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-1.2.1.tgz#e3779c8ee17fccf428488f6e281187f2e632841c"
+  integrity sha512-s6tfsaQaQi3JNciBH6shVqEDvhGut0SUXr31ag8Pd8BBbVVlcGfWhpPmEOoM6RJ5TFhbypvf5yyRw/VXW1IiWg==
+  dependencies:
+    ci-info "^1.5.0"
+
+is-data-descriptor@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
+  integrity sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-data-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz#d84876321d0e7add03990406abbbbd36ba9268c7"
+  integrity sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==
+  dependencies:
+    kind-of "^6.0.0"
+
+is-date-object@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"
+  integrity sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY=
+
+is-descriptor@^0.1.0:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
+  integrity sha512-avDYr0SB3DwO9zsMov0gKCESFYqCnE4hq/4z3TdUlukEy5t9C0YRq7HLrsN52NAcqXKaepeCD0n+B0arnVG3Hg==
+  dependencies:
+    is-accessor-descriptor "^0.1.6"
+    is-data-descriptor "^0.1.4"
+    kind-of "^5.0.0"
+
+is-descriptor@^1.0.0, is-descriptor@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-1.0.2.tgz#3b159746a66604b04f8c81524ba365c5f14d86ec"
+  integrity sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==
+  dependencies:
+    is-accessor-descriptor "^1.0.0"
+    is-data-descriptor "^1.0.0"
+    kind-of "^6.0.2"
+
+is-directory@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/is-directory/-/is-directory-0.3.1.tgz#61339b6f2475fc772fd9c9d83f5c8575dc154ae1"
+  integrity sha1-YTObbyR1/Hcv2cnYP1yFddwVSuE=
+
+is-dotfile@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/is-dotfile/-/is-dotfile-1.0.3.tgz#a6a2f32ffd2dfb04f5ca25ecd0f6b83cf798a1e1"
+  integrity sha1-pqLzL/0t+wT1yiXs0Pa4PPeYoeE=
+
+is-equal-shallow@^0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/is-equal-shallow/-/is-equal-shallow-0.1.3.tgz#2238098fc221de0bcfa5d9eac4c45d638aa1c534"
+  integrity sha1-IjgJj8Ih3gvPpdnqxMRdY4qhxTQ=
+  dependencies:
+    is-primitive "^2.0.0"
+
+is-extendable@^0.1.0, is-extendable@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
+  integrity sha1-YrEQ4omkcUGOPsNqYX1HLjAd/Ik=
+
+is-extendable@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-1.0.1.tgz#a7470f9e426733d81bd81e1155264e3a3507cab4"
+  integrity sha512-arnXMxT1hhoKo9k1LZdmlNyJdDDfy2v0fXjFlmok4+i8ul/6WlbVge9bhM74OpNPQPMGUToDtz+KXa1PneJxOA==
+  dependencies:
+    is-plain-object "^2.0.4"
+
+is-extglob@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-1.0.0.tgz#ac468177c4943405a092fc8f29760c6ffc6206c0"
+  integrity sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=
+
+is-finite@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
+  integrity sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=
+  dependencies:
+    number-is-nan "^1.0.0"
+
+is-fullwidth-code-point@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
+  integrity sha1-754xOG8DGn8NZDr4L95QxFfvAMs=
+  dependencies:
+    number-is-nan "^1.0.0"
+
+is-fullwidth-code-point@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
+  integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
+
+is-generator-fn@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-generator-fn/-/is-generator-fn-1.0.0.tgz#969d49e1bb3329f6bb7f09089be26578b2ddd46a"
+  integrity sha1-lp1J4bszKfa7fwkIm+JleLLd1Go=
+
+is-glob@^2.0.0, is-glob@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-2.0.1.tgz#d096f926a3ded5600f3fdfd91198cb0888c2d863"
+  integrity sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=
+  dependencies:
+    is-extglob "^1.0.0"
+
+is-number@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-2.1.0.tgz#01fcbbb393463a548f2f466cce16dece49db908f"
+  integrity sha1-Afy7s5NGOlSPL0ZszhbezknbkI8=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-number@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-3.0.0.tgz#24fd6201a4782cf50561c810276afc7d12d71195"
+  integrity sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=
+  dependencies:
+    kind-of "^3.0.2"
+
+is-number@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-4.0.0.tgz#0026e37f5454d73e356dfe6564699867c6a7f0ff"
+  integrity sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==
+
+is-path-cwd@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-path-cwd/-/is-path-cwd-1.0.0.tgz#d225ec23132e89edd38fda767472e62e65f1106d"
+  integrity sha1-0iXsIxMuie3Tj9p2dHLmLmXxEG0=
+
+is-path-in-cwd@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-path-in-cwd/-/is-path-in-cwd-1.0.1.tgz#5ac48b345ef675339bd6c7a48a912110b241cf52"
+  integrity sha512-FjV1RTW48E7CWM7eE/J2NJvAEEVektecDBVBE5Hh3nM1Jd0kvhHtX68Pr3xsDf857xt3Y4AkwVULK1Vku62aaQ==
+  dependencies:
+    is-path-inside "^1.0.0"
+
+is-path-inside@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-path-inside/-/is-path-inside-1.0.1.tgz#8ef5b7de50437a3fdca6b4e865ef7aa55cb48036"
+  integrity sha1-jvW33lBDej/cprToZe96pVy0gDY=
+  dependencies:
+    path-is-inside "^1.0.1"
+
+is-plain-object@^2.0.1, is-plain-object@^2.0.3, is-plain-object@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-2.0.4.tgz#2c163b3fafb1b606d9d17928f05c2a1c38e07677"
+  integrity sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==
+  dependencies:
+    isobject "^3.0.1"
+
+is-posix-bracket@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
+  integrity sha1-MzTceXdDaOkvAW5vvAqI9c1ua8Q=
+
+is-primitive@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
+  integrity sha1-IHurkWOEmcB7Kt8kCkGochADRXU=
+
+is-promise@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
+  integrity sha1-eaKp7OfwlugPNtKy87wWwf9L8/o=
+
+is-regex@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
+  integrity sha1-VRdIm1RwkbCTDglWVM7SXul+lJE=
+  dependencies:
+    has "^1.0.1"
+
+is-resolvable@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-resolvable/-/is-resolvable-1.1.0.tgz#fb18f87ce1feb925169c9a407c19318a3206ed88"
+  integrity sha512-qgDYXFSR5WvEfuS5dMj6oTMEbrrSaM0CrFk2Yiq/gXnBvD9pMa2jGXxyhGLfvhZpuMZe18CJpFxAt3CRs42NMg==
+
+is-stream@^1.0.1, is-stream@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
+  integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
+
+is-symbol@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
+  integrity sha1-PMWfAAJRlLarLjjbrmaJJWtmBXI=
+
+is-typedarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
+  integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
+
+is-utf8@^0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
+  integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
+
+is-windows@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
+  integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
+
+isarray@1.0.0, isarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+isexe@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
+  integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
+
+isobject@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-2.1.0.tgz#f065561096a3f1da2ef46272f815c840d87e0c89"
+  integrity sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=
+  dependencies:
+    isarray "1.0.0"
+
+isobject@^3.0.0, isobject@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
+  integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
+
+isomorphic-fetch@^2.1.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
+  integrity sha1-YRrhrPFPXoH3KVB0coGf6XM1WKk=
+  dependencies:
+    node-fetch "^1.0.1"
+    whatwg-fetch ">=0.10.0"
+
+isstream@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
+  integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
+
+istanbul-api@^1.3.1:
+  version "1.3.7"
+  resolved "https://registry.yarnpkg.com/istanbul-api/-/istanbul-api-1.3.7.tgz#a86c770d2b03e11e3f778cd7aedd82d2722092aa"
+  integrity sha512-4/ApBnMVeEPG3EkSzcw25wDe4N66wxwn+KKn6b47vyek8Xb3NBAcg4xfuQbS7BqcZuTX4wxfD5lVagdggR3gyA==
+  dependencies:
+    async "^2.1.4"
+    fileset "^2.0.2"
+    istanbul-lib-coverage "^1.2.1"
+    istanbul-lib-hook "^1.2.2"
+    istanbul-lib-instrument "^1.10.2"
+    istanbul-lib-report "^1.1.5"
+    istanbul-lib-source-maps "^1.2.6"
+    istanbul-reports "^1.5.1"
+    js-yaml "^3.7.0"
+    mkdirp "^0.5.1"
+    once "^1.4.0"
+
+istanbul-lib-coverage@^1.2.0, istanbul-lib-coverage@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-1.2.1.tgz#ccf7edcd0a0bb9b8f729feeb0930470f9af664f0"
+  integrity sha512-PzITeunAgyGbtY1ibVIUiV679EFChHjoMNRibEIobvmrCRaIgwLxNucOSimtNWUhEib/oO7QY2imD75JVgCJWQ==
+
+istanbul-lib-hook@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-hook/-/istanbul-lib-hook-1.2.2.tgz#bc6bf07f12a641fbf1c85391d0daa8f0aea6bf86"
+  integrity sha512-/Jmq7Y1VeHnZEQ3TL10VHyb564mn6VrQXHchON9Jf/AEcmQ3ZIiyD1BVzNOKTZf/G3gE+kiGK6SmpF9y3qGPLw==
+  dependencies:
+    append-transform "^0.4.0"
+
+istanbul-lib-instrument@^1.10.1, istanbul-lib-instrument@^1.10.2:
+  version "1.10.2"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-1.10.2.tgz#1f55ed10ac3c47f2bdddd5307935126754d0a9ca"
+  integrity sha512-aWHxfxDqvh/ZlxR8BBaEPVSWDPUkGD63VjGQn3jcw8jCp7sHEMKcrj4xfJn/ABzdMEHiQNyvDQhqm5o8+SQg7A==
+  dependencies:
+    babel-generator "^6.18.0"
+    babel-template "^6.16.0"
+    babel-traverse "^6.18.0"
+    babel-types "^6.18.0"
+    babylon "^6.18.0"
+    istanbul-lib-coverage "^1.2.1"
+    semver "^5.3.0"
+
+istanbul-lib-report@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-report/-/istanbul-lib-report-1.1.5.tgz#f2a657fc6282f96170aaf281eb30a458f7f4170c"
+  integrity sha512-UsYfRMoi6QO/doUshYNqcKJqVmFe9w51GZz8BS3WB0lYxAllQYklka2wP9+dGZeHYaWIdcXUx8JGdbqaoXRXzw==
+  dependencies:
+    istanbul-lib-coverage "^1.2.1"
+    mkdirp "^0.5.1"
+    path-parse "^1.0.5"
+    supports-color "^3.1.2"
+
+istanbul-lib-source-maps@^1.2.4, istanbul-lib-source-maps@^1.2.6:
+  version "1.2.6"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.6.tgz#37b9ff661580f8fca11232752ee42e08c6675d8f"
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+    istanbul-lib-coverage "^1.2.1"
+    mkdirp "^0.5.1"
+    rimraf "^2.6.1"
+    source-map "^0.5.3"
+
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+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/istanbul-reports/-/istanbul-reports-1.5.1.tgz#97e4dbf3b515e8c484caea15d6524eebd3ff4e1a"
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+  dependencies:
+    handlebars "^4.0.3"
+
+jest-changed-files@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-24.0.0-alpha.6.tgz#f3fd2e96f67f3e1e7e2bc74fc7c81c5e53801404"
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+  dependencies:
+    execa "^1.0.0"
+    throat "^4.0.0"
+
+jest-cli@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-24.0.0-alpha.6.tgz#d5e4ee6c39d2912a70ac78352521d8c606ea27b9"
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+    chalk "^2.0.1"
+    exit "^0.1.2"
+    glob "^7.1.2"
+    graceful-fs "^4.1.11"
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+    jest-resolve-dependencies "^24.0.0-alpha.6"
+    jest-runner "^24.0.0-alpha.6"
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+    jest-watcher "^24.0.0-alpha.6"
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+    micromatch "^2.3.11"
+    node-notifier "^5.2.1"
+    prompts "^1.1.0"
+    realpath-native "^1.0.0"
+    rimraf "^2.5.4"
+    slash "^2.0.0"
+    string-length "^2.0.0"
+    strip-ansi "^5.0.0"
+    which "^1.2.12"
+    yargs "^12.0.2"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-23.6.0.tgz#f82546a90ade2d8c7026fbf6ac5207fc22f8eb1d"
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+  dependencies:
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+    babel-jest "^23.6.0"
+    chalk "^2.0.1"
+    glob "^7.1.1"
+    jest-environment-jsdom "^23.4.0"
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+    jest-resolve "^23.6.0"
+    jest-util "^23.4.0"
+    jest-validate "^23.6.0"
+    micromatch "^2.3.11"
+    pretty-format "^23.6.0"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-24.0.0-alpha.6.tgz#63f86a568a4e2135bee93396dedca04c7a2da14b"
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+    babel-jest "^24.0.0-alpha.6"
+    chalk "^2.0.1"
+    glob "^7.1.1"
+    jest-environment-jsdom "^24.0.0-alpha.6"
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+    micromatch "^2.3.11"
+    pretty-format "^24.0.0-alpha.6"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-23.6.0.tgz#1500f3f16e850bb3d71233408089be099f610c7d"
+  integrity sha512-Gz9l5Ov+X3aL5L37IT+8hoCUsof1CVYBb2QEkOupK64XyRR3h+uRpYIm97K7sY8diFxowR8pIGEdyfMKTixo3g==
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+    diff "^3.2.0"
+    jest-get-type "^22.1.0"
+    pretty-format "^23.6.0"
+
+jest-diff@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.0.0-alpha.6.tgz#9770b9d2067d40f3f8ff4001fcaf0eb0e5390f36"
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+    pretty-format "^24.0.0-alpha.6"
+
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+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
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+
+jest-docblock@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-24.0.0-alpha.6.tgz#abb38d04afd624cbfb34e13fa9e0c1053388a333"
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+  dependencies:
+    detect-newline "^2.1.0"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-each/-/jest-each-23.6.0.tgz#ba0c3a82a8054387016139c733a05242d3d71575"
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+  dependencies:
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+    pretty-format "^23.6.0"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-each/-/jest-each-24.0.0-alpha.6.tgz#9f73236c940ec82fca62992435c671cfa9a871eb"
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+    pretty-format "^24.0.0-alpha.6"
+
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+  version "23.4.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-23.4.0.tgz#056a7952b3fea513ac62a140a2c368c79d9e6023"
+  integrity sha1-BWp5UrP+pROsYqFAosNox52eYCM=
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+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-24.0.0-alpha.6.tgz#a829e26120a056a6c0a4dbdf20b7d2bbb6a306bd"
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+    jest-util "^24.0.0-alpha.6"
+    jsdom "^11.5.1"
+
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+  version "23.4.0"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-23.4.0.tgz#57e80ed0841dea303167cce8cd79521debafde10"
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+    jest-util "^23.4.0"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-24.0.0-alpha.6.tgz#81104a599f1db3afc7c2c2c17d1cc2772e3a8870"
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+  dependencies:
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+    jest-util "^24.0.0-alpha.6"
+
+jest-get-type@^22.1.0:
+  version "22.4.3"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.4.3.tgz#e3a8504d8479342dd4420236b322869f18900ce4"
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+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-24.0.0-alpha.6.tgz#23cc13e4e04c61f001356529675a6aec5a2ef53d"
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+
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+  version "24.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-24.0.0-alpha.4.tgz#209c13e79a09b4d380d6c46ab12ecc82f02b84ff"
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+    graceful-fs "^4.1.11"
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-24.0.0-alpha.6.tgz#fb2c785080f391b923db51846b86840d0d773076"
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+    graceful-fs "^4.1.11"
+    invariant "^2.2.4"
+    jest-serializer "^24.0.0-alpha.6"
+    jest-worker "^24.0.0-alpha.6"
+    micromatch "^2.3.11"
+    sane "^3.0.0"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-23.6.0.tgz#840e937f848a6c8638df24360ab869cc718592e0"
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+    chalk "^2.0.1"
+    co "^4.6.0"
+    expect "^23.6.0"
+    is-generator-fn "^1.0.0"
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+    jest-message-util "^23.4.0"
+    jest-snapshot "^23.6.0"
+    jest-util "^23.4.0"
+    pretty-format "^23.6.0"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-24.0.0-alpha.6.tgz#a3ea4ac5e71c366360bfebc96fd2b5a6274b3292"
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+    chalk "^2.0.1"
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+    is-generator-fn "^1.0.0"
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+    jest-snapshot "^24.0.0-alpha.6"
+    jest-util "^24.0.0-alpha.6"
+    pretty-format "^24.0.0-alpha.6"
+
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+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/jest-junit/-/jest-junit-5.2.0.tgz#980401db7aa69999cf117c6d740a8135c22ae379"
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+    jest-validate "^23.0.1"
+    mkdirp "^0.5.1"
+    strip-ansi "^4.0.0"
+    xml "^1.0.1"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-leak-detector/-/jest-leak-detector-24.0.0-alpha.6.tgz#01f95a351f6689f7162224bbdcde3ccdca6b0a8e"
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+  dependencies:
+    pretty-format "^24.0.0-alpha.6"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-23.6.0.tgz#726bcea0c5294261a7417afb6da3186b4b8cac80"
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+    pretty-format "^23.6.0"
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-24.0.0-alpha.6.tgz#124f3363fdf69d3cc940e53ce868156cc8642552"
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+    pretty-format "^24.0.0-alpha.6"
+
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+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-23.4.0.tgz#17610c50942349508d01a3d1e0bda2c079086a9f"
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+    stack-utils "^1.0.1"
+
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+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-24.0.0-alpha.6.tgz#050c9194ca710f8759907e9e12f4c53061ba46fa"
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+  integrity sha1-rRxg8p6HGdR8JuETgJi20YsmETQ=
+
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+
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+  version "23.3.0"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-23.3.0.tgz#5f86729547c2785c4002ceaa8f849fe8ca471bc5"
+  integrity sha1-X4ZylUfCeFxAAs6qj4Sf6MpHG8U=
+
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+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-24.0.0-alpha.6.tgz#290684073641e2be4c0a5ddaaf4450d7956f7b57"
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+
+jest-resolve-dependencies@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-24.0.0-alpha.6.tgz#a345714786dfed646ca0e1d69c03e99f54c7f415"
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+  dependencies:
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+    jest-snapshot "^24.0.0-alpha.6"
+
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+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-23.6.0.tgz#cf1d1a24ce7ee7b23d661c33ba2150f3aebfa0ae"
+  integrity sha512-XyoRxNtO7YGpQDmtQCmZjum1MljDqUCob7XlZ6jy9gsMugHdN2hY4+Acz9Qvjz2mSsOnPSH7skBmDYCHXVZqkA==
+  dependencies:
+    browser-resolve "^1.11.3"
+    chalk "^2.0.1"
+    realpath-native "^1.0.0"
+
+jest-resolve@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-24.0.0-alpha.6.tgz#652abbae048b531311315aa546c5c8ad663ea6a2"
+  integrity sha512-+RFkYvG5DJ6A2R2r8zrJX3Hv9byIM0Ytrib2mpc8FNrLAe5fEEmaC+GdcVx5b0ybh1F7ZPoFNSoEWKZpK9+76A==
+  dependencies:
+    browser-resolve "^1.11.3"
+    chalk "^2.0.1"
+    realpath-native "^1.0.0"
+
+jest-runner@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-24.0.0-alpha.6.tgz#520692dfc07de1cfe4261c806a9b8f0225bd16df"
+  integrity sha512-EeQ4pkfwPakGREYcKi8oJc/OWmfkld7AaNDkClbKuaKUyS0gkGNXUc9YijvlyA8VBXYTDqMRs8E8HoWKsW5LTw==
+  dependencies:
+    exit "^0.1.2"
+    graceful-fs "^4.1.11"
+    jest-config "^24.0.0-alpha.6"
+    jest-docblock "^24.0.0-alpha.6"
+    jest-haste-map "^24.0.0-alpha.6"
+    jest-jasmine2 "^24.0.0-alpha.6"
+    jest-leak-detector "^24.0.0-alpha.6"
+    jest-message-util "^24.0.0-alpha.6"
+    jest-runtime "^24.0.0-alpha.6"
+    jest-util "^24.0.0-alpha.6"
+    jest-worker "^24.0.0-alpha.6"
+    source-map-support "^0.5.6"
+    throat "^4.0.0"
+
+jest-runtime@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-24.0.0-alpha.6.tgz#3c9e5d032324b95360736115a8182639d4120e82"
+  integrity sha512-91VTDRHcrvKFQRI9NeVe2+PfMekV0Bo3fNFArfmISpx3fOLqt96AbFWltAFMVkaLTLuVizyYBkKFXCfYYytQ2Q==
+  dependencies:
+    babel-core "^6.0.0"
+    babel-plugin-istanbul "^4.1.6"
+    chalk "^2.0.1"
+    convert-source-map "^1.4.0"
+    exit "^0.1.2"
+    fast-json-stable-stringify "^2.0.0"
+    glob "^7.1.3"
+    graceful-fs "^4.1.11"
+    jest-config "^24.0.0-alpha.6"
+    jest-haste-map "^24.0.0-alpha.6"
+    jest-message-util "^24.0.0-alpha.6"
+    jest-regex-util "^24.0.0-alpha.6"
+    jest-resolve "^24.0.0-alpha.6"
+    jest-snapshot "^24.0.0-alpha.6"
+    jest-util "^24.0.0-alpha.6"
+    jest-validate "^24.0.0-alpha.6"
+    micromatch "^2.3.11"
+    realpath-native "^1.0.0"
+    slash "^2.0.0"
+    strip-bom "3.0.0"
+    write-file-atomic "^2.1.0"
+    yargs "^12.0.2"
+
+jest-serializer@24.0.0-alpha.4:
+  version "24.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/jest-serializer/-/jest-serializer-24.0.0-alpha.4.tgz#939c31155b95bebc1ef6f76ae34dbf2c06046e52"
+  integrity sha512-g/hO2JM6c96wGzbiQNdbOrLlx8p+cA8W8+EwFkKtUlWcmBCxbsZb8TaIK2FLfvxCTKPwMhBujhw46GM5WppAsQ==
+
+jest-serializer@24.0.0-alpha.6, jest-serializer@^24.0.0-alpha.4, jest-serializer@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-serializer/-/jest-serializer-24.0.0-alpha.6.tgz#27d2fee4b1a85698717a30c3ec2ab80767312597"
+  integrity sha512-IPA5T6/GhlE6dedSk7Cd7YfuORnYjN0VD5iJVFn1Q81RJjpj++Hen5kJbKcg547vXsQ1TddV15qOA/zeIfOCLw==
+
+jest-snapshot@^23.6.0:
+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-23.6.0.tgz#f9c2625d1b18acda01ec2d2b826c0ce58a5aa17a"
+  integrity sha512-tM7/Bprftun6Cvj2Awh/ikS7zV3pVwjRYU2qNYS51VZHgaAMBs5l4o/69AiDHhQrj5+LA2Lq4VIvK7zYk/bswg==
+  dependencies:
+    babel-types "^6.0.0"
+    chalk "^2.0.1"
+    jest-diff "^23.6.0"
+    jest-matcher-utils "^23.6.0"
+    jest-message-util "^23.4.0"
+    jest-resolve "^23.6.0"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    pretty-format "^23.6.0"
+    semver "^5.5.0"
+
+jest-snapshot@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-24.0.0-alpha.6.tgz#89659179ccd8f47e4476850f04e9810e6ea9a425"
+  integrity sha512-TzNqLIwje0rh637ibAoD+BO0rTngznhUnlmM1AcCIxb663oLfxzSjMIhxwcQ4bhATlsrluerNfGeqp07DEWkPQ==
+  dependencies:
+    babel-types "^6.0.0"
+    chalk "^2.0.1"
+    jest-diff "^24.0.0-alpha.6"
+    jest-matcher-utils "^24.0.0-alpha.6"
+    jest-message-util "^24.0.0-alpha.6"
+    jest-resolve "^24.0.0-alpha.6"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    pretty-format "^24.0.0-alpha.6"
+    semver "^5.5.0"
+
+jest-util@^23.4.0:
+  version "23.4.0"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-23.4.0.tgz#4d063cb927baf0a23831ff61bec2cbbf49793561"
+  integrity sha1-TQY8uSe68KI4Mf9hvsLLv0l5NWE=
+  dependencies:
+    callsites "^2.0.0"
+    chalk "^2.0.1"
+    graceful-fs "^4.1.11"
+    is-ci "^1.0.10"
+    jest-message-util "^23.4.0"
+    mkdirp "^0.5.1"
+    slash "^1.0.0"
+    source-map "^0.6.0"
+
+jest-util@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-24.0.0-alpha.6.tgz#974ce25422e1b545d225b90ac0bdcd5453dfd634"
+  integrity sha512-u8iGWbLABtJIJeZ0oB01n0BBUuDQT0iQvNXYN0+9WTKO+pHgv37ItYAbMQNM0NjIZig0l410VoFeWqg1KJyxpw==
+  dependencies:
+    callsites "^2.0.0"
+    chalk "^2.0.1"
+    graceful-fs "^4.1.11"
+    is-ci "^1.0.10"
+    jest-message-util "^24.0.0-alpha.6"
+    mkdirp "^0.5.1"
+    slash "^2.0.0"
+    source-map "^0.6.0"
+
+jest-validate@^23.0.1, jest-validate@^23.6.0:
+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-23.6.0.tgz#36761f99d1ed33fcd425b4e4c5595d62b6597474"
+  integrity sha512-OFKapYxe72yz7agrDAWi8v2WL8GIfVqcbKRCLbRG9PAxtzF9b1SEDdTpytNDN12z2fJynoBwpMpvj2R39plI2A==
+  dependencies:
+    chalk "^2.0.1"
+    jest-get-type "^22.1.0"
+    leven "^2.1.0"
+    pretty-format "^23.6.0"
+
+jest-validate@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-24.0.0-alpha.6.tgz#19f8a9ac395199c9b4965297a159caf7024f4713"
+  integrity sha512-E6N3xiZ0EQais9WW3alpWO3NNGxvrbbwkXGPLimpSKEwpz29ezL93C4XFPnzZ2Xet+7I5SJxrvgOYkFJLreAdQ==
+  dependencies:
+    chalk "^2.0.1"
+    jest-get-type "^24.0.0-alpha.6"
+    leven "^2.1.0"
+    pretty-format "^24.0.0-alpha.6"
+
+jest-watcher@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-watcher/-/jest-watcher-24.0.0-alpha.6.tgz#e54918ae31bfed17581fa3978afbe5cf20e9c512"
+  integrity sha512-CxL49DV+dNa7ET1OAFGoZd0F1Bt8dgdwyycV9znLkB+RJrVm+kh8KPF24LM5p66f5oQyhAfuxO71u6eRPYkSGg==
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.1"
+    string-length "^2.0.0"
+
+jest-worker@24.0.0-alpha.4:
+  version "24.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.0.0-alpha.4.tgz#6766d11b66e7b2d61f79711d159125657084d021"
+  integrity sha512-kZYIxqwkvaQggTBiOnoGoI7pyHAsCgFg+1C9NCSpkaQOLQ/MpEdY6cTPTbLwWdtzSloWnECAAj8p9es2VLQd/Q==
+  dependencies:
+    merge-stream "^1.0.1"
+
+jest-worker@24.0.0-alpha.6, jest-worker@^24.0.0-alpha.4, jest-worker@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.0.0-alpha.6.tgz#463681b92c117c57107135c14b9b9d6cd51d80ce"
+  integrity sha512-iXtH7MR9bjWlNnlnRBcrBRrb4cSVxML96La5vsnmBvDI+mJnkP5uEt6Fgpo5Y8f3z9y2Rd7wuPnKRxqQsiU/dA==
+  dependencies:
+    merge-stream "^1.0.1"
+
+jest@24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/jest/-/jest-24.0.0-alpha.6.tgz#2635f90c5f5deaeb47e9c0f3e4ab3ed290f59bf4"
+  integrity sha512-2mVzUbDspFFZFB0bmT4cEbWmnMqz4CGEY1EiNCngO//NL+OSEqXPLwV/wdFWwLb3QeYm7TSgTE7Mf18ZAHSrhw==
+  dependencies:
+    import-local "^2.0.0"
+    jest-cli "^24.0.0-alpha.6"
+
+"js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
+js-tokens@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
+  integrity sha1-mGbfOVECEw449/mWvOtlRDIJwls=
+
+js-yaml@^3.11.0, js-yaml@^3.7.0, js-yaml@^3.9.0:
+  version "3.12.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.0.tgz#eaed656ec8344f10f527c6bfa1b6e2244de167d1"
+  integrity sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
+jsbn@~0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
+  integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
+
+jsdom@^11.5.1:
+  version "11.12.0"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-11.12.0.tgz#1a80d40ddd378a1de59656e9e6dc5a3ba8657bc8"
+  integrity sha512-y8Px43oyiBM13Zc1z780FrfNLJCXTL40EWlty/LXUtcjykRBNgLlCjWXpfSPBl2iv+N7koQN+dvqszHZgT/Fjw==
+  dependencies:
+    abab "^2.0.0"
+    acorn "^5.5.3"
+    acorn-globals "^4.1.0"
+    array-equal "^1.0.0"
+    cssom ">= 0.3.2 < 0.4.0"
+    cssstyle "^1.0.0"
+    data-urls "^1.0.0"
+    domexception "^1.0.1"
+    escodegen "^1.9.1"
+    html-encoding-sniffer "^1.0.2"
+    left-pad "^1.3.0"
+    nwsapi "^2.0.7"
+    parse5 "4.0.0"
+    pn "^1.1.0"
+    request "^2.87.0"
+    request-promise-native "^1.0.5"
+    sax "^1.2.4"
+    symbol-tree "^3.2.2"
+    tough-cookie "^2.3.4"
+    w3c-hr-time "^1.0.1"
+    webidl-conversions "^4.0.2"
+    whatwg-encoding "^1.0.3"
+    whatwg-mimetype "^2.1.0"
+    whatwg-url "^6.4.1"
+    ws "^5.2.0"
+    xml-name-validator "^3.0.0"
+
+jsesc@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
+  integrity sha1-RsP+yMGJKxKwgz25vHYiF226s0s=
+
+jsesc@^2.5.1:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.1.tgz#e421a2a8e20d6b0819df28908f782526b96dd1fe"
+  integrity sha1-5CGiqOINawgZ3yiQj3glJrlt0f4=
+
+jsesc@~0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
+  integrity sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=
+
+json-parse-better-errors@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
+  integrity sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==
+
+json-schema-traverse@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz#349a6d44c53a51de89b40805c5d5e59b417d3340"
+  integrity sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
+  integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
+
+json-stable-stringify-without-jsonify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
+  integrity sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=
+
+json-stable-stringify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz#9a759d39c5f2ff503fd5300646ed445f88c4f9af"
+  integrity sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=
+  dependencies:
+    jsonify "~0.0.0"
+
+json-stringify-safe@~5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
+  integrity sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=
+
+json5@^0.5.0, json5@^0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
+  integrity sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=
+
+jsonfile@^2.1.0:
+  version "2.4.0"
+  resolved "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
+  integrity sha1-NzaitCi4e72gzIO1P6PWM6NcKug=
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  integrity sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
+jsonify@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
+  integrity sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=
+
+jsprim@^1.2.2:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
+  integrity sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=
+  dependencies:
+    assert-plus "1.0.0"
+    extsprintf "1.3.0"
+    json-schema "0.2.3"
+    verror "1.10.0"
+
+jsx-ast-utils@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/jsx-ast-utils/-/jsx-ast-utils-2.0.1.tgz#e801b1b39985e20fffc87b40e3748080e2dcac7f"
+  integrity sha1-6AGxs5mF4g//yHtA43SAgOLcrH8=
+  dependencies:
+    array-includes "^3.0.3"
+
+kind-of@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-1.1.0.tgz#140a3d2d41a36d2efcfa9377b62c24f8495a5c44"
+  integrity sha1-FAo9LUGjbS78+pN3tiwk+ElaXEQ=
+
+kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
+  integrity sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-4.0.0.tgz#20813df3d712928b207378691a45066fae72dd57"
+  integrity sha1-IIE989cSkosgc3hpGkUGb65y3Vc=
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^5.0.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-5.1.0.tgz#729c91e2d857b7a419a1f9aa65685c4c33f5845d"
+  integrity sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==
+
+kind-of@^6.0.0, kind-of@^6.0.2:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
+  integrity sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==
+
+klaw@^1.0.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/klaw/-/klaw-1.3.1.tgz#4088433b46b3b1ba259d78785d8e96f73ba02439"
+  integrity sha1-QIhDO0azsbolnXh4XY6W9zugJDk=
+  optionalDependencies:
+    graceful-fs "^4.1.9"
+
+kleur@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/kleur/-/kleur-2.0.2.tgz#b704f4944d95e255d038f0cb05fb8a602c55a300"
+  integrity sha512-77XF9iTllATmG9lSlIv0qdQ2BQ/h9t0bJllHlbvsQ0zUWfU7Yi0S8L5JXzPZgkefIiajLmBJJ4BsMJmqcf7oxQ==
+
+lcid@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-1.0.0.tgz#308accafa0bc483a3867b4b6f2b9506251d1b835"
+  integrity sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=
+  dependencies:
+    invert-kv "^1.0.0"
+
+lcid@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-2.0.0.tgz#6ef5d2df60e52f82eb228a4c373e8d1f397253cf"
+  integrity sha512-avPEb8P8EGnwXKClwsNUgryVjllcRqtMYa49NTsbQagYuT1DcXnl1915oxWjoyGrXR6zH/Y0Zc96xWsPcoDKeA==
+  dependencies:
+    invert-kv "^2.0.0"
+
+left-pad@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.3.0.tgz#5b8a3a7765dfe001261dde915589e782f8c94d1e"
+  integrity sha512-XI5MPzVNApjAyhQzphX8BkmKsKUxD4LdyK24iZeQGinBN9yTQT3bFlCBy/aVx2HrNcqQGsdot8ghrjyrvMCoEA==
+
+leven@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/leven/-/leven-2.1.0.tgz#c2e7a9f772094dee9d34202ae8acce4687875580"
+  integrity sha1-wuep93IJTe6dNCAq6KzORoeHVYA=
+
+levn@^0.3.0, levn@~0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
+  integrity sha1-OwmSTt+fCDwEkP3UwLxEIeBHZO4=
+  dependencies:
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+
+load-json-file@^1.0.0:
+  version "1.1.0"
+  resolved "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
+  integrity sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^2.2.0"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+    strip-bom "^2.0.0"
+
+load-json-file@^2.0.0:
+  version "2.0.0"
+  resolved "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz#7947e42149af80d696cbf797bcaabcfe1fe29ca8"
+  integrity sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^2.2.0"
+    pify "^2.0.0"
+    strip-bom "^3.0.0"
+
+locate-path@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
+  integrity sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=
+  dependencies:
+    p-locate "^2.0.0"
+    path-exists "^3.0.0"
+
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
+lodash.pad@^4.1.0:
+  version "4.5.1"
+  resolved "https://registry.yarnpkg.com/lodash.pad/-/lodash.pad-4.5.1.tgz#4330949a833a7c8da22cc20f6a26c4d59debba70"
+  integrity sha1-QzCUmoM6fI2iLMIPaibE1Z3runA=
+
+lodash.padend@^4.1.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.padend/-/lodash.padend-4.6.1.tgz#53ccba047d06e158d311f45da625f4e49e6f166e"
+  integrity sha1-U8y6BH0G4VjTEfRdpiX05J5vFm4=
+
+lodash.padstart@^4.1.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.padstart/-/lodash.padstart-4.6.1.tgz#d2e3eebff0d9d39ad50f5cbd1b52a7bce6bb611b"
+  integrity sha1-0uPuv/DZ05rVD1y9G1KnvOa7YRs=
+
+lodash.sortby@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
+  integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
+
+lodash.throttle@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.throttle/-/lodash.throttle-4.1.1.tgz#c23e91b710242ac70c37f1e1cda9274cc39bf2f4"
+  integrity sha1-wj6RtxAkKscMN/HhzaknTMOb8vQ=
+
+lodash@4.x.x, lodash@^4.13.1, lodash@^4.15.0, lodash@^4.17.10, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.3.0, lodash@^4.6.1:
+  version "4.17.11"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+
+loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
+  integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
+  dependencies:
+    js-tokens "^3.0.0 || ^4.0.0"
+
+lru-cache@^4.0.1:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.3.tgz#a1175cf3496dfc8436c156c334b4955992bce69c"
+  integrity sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==
+  dependencies:
+    pseudomap "^1.0.2"
+    yallist "^2.1.2"
+
+make-dir@^1.0.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-1.3.0.tgz#79c1033b80515bd6d24ec9933e860ca75ee27f0c"
+  integrity sha512-2w31R7SJtieJJnQtGc7RVL2StM2vGYVfqUOvUDxH6bC6aJTxPxTF0GnIgCyu7tjockiUWAYQRbxa7vKn34s5sQ==
+  dependencies:
+    pify "^3.0.0"
+
+makeerror@1.0.x:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/makeerror/-/makeerror-1.0.11.tgz#e01a5c9109f2af79660e4e8b9587790184f5a96c"
+  integrity sha1-4BpckQnyr3lmDk6LlYd5AYT1qWw=
+  dependencies:
+    tmpl "1.0.x"
+
+map-age-cleaner@^0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/map-age-cleaner/-/map-age-cleaner-0.1.2.tgz#098fb15538fd3dbe461f12745b0ca8568d4e3f74"
+  integrity sha512-UN1dNocxQq44IhJyMI4TU8phc2m9BddacHRPRjKGLYaF0jqd3xLz0jS0skpAU9WgYyoR4gHtUpzytNBS385FWQ==
+  dependencies:
+    p-defer "^1.0.0"
+
+map-cache@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
+  integrity sha1-wyq9C9ZSXZsFFkW7TyasXcmKDb8=
+
+map-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
+  integrity sha1-7Nyo8TFE5mDxtb1B8S80edmN+48=
+  dependencies:
+    object-visit "^1.0.0"
+
+math-random@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/math-random/-/math-random-1.0.1.tgz#8b3aac588b8a66e4975e3cdea67f7bb329601fac"
+  integrity sha1-izqsWIuKZuSXXjzepn97sylgH6w=
+
+mem@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
+  integrity sha1-Xt1StIXKHZAP5kiVUFOZoN+kX3Y=
+  dependencies:
+    mimic-fn "^1.0.0"
+
+mem@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-4.0.0.tgz#6437690d9471678f6cc83659c00cbafcd6b0cdaf"
+  integrity sha512-WQxG/5xYc3tMbYLXoXPm81ET2WDULiU5FxbuIoNbJqLOOI8zehXFdZuiUEgfdrU2mVB1pxBZUGlYORSrpuJreA==
+  dependencies:
+    map-age-cleaner "^0.1.1"
+    mimic-fn "^1.0.0"
+    p-is-promise "^1.1.0"
+
+merge-stream@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
+  integrity sha1-QEEgLVCKNCugAXQAjfDCUbjBNeE=
+  dependencies:
+    readable-stream "^2.0.1"
+
+merge@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
+  integrity sha1-dTHjnUlJwoGma4xabgJl6LBYlNo=
+
+metro-babel-register@^0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-babel-register/-/metro-babel-register-0.49.1.tgz#b84d81690d41aab83ab288745863e0e21ad761c3"
+  integrity sha512-hBVAbX5xUPlEy0aKRvGCR4Yn309oGwKl3An6sOLHvtZB4z45eDVbaBSSaMW2q8IGwahdrunYdWtaLVESpBoX6Q==
+  dependencies:
+    "@babel/core" "^7.0.0"
+    "@babel/plugin-proposal-class-properties" "^7.0.0"
+    "@babel/plugin-proposal-nullish-coalescing-operator" "^7.0.0"
+    "@babel/plugin-proposal-object-rest-spread" "^7.0.0"
+    "@babel/plugin-proposal-optional-catch-binding" "^7.0.0"
+    "@babel/plugin-proposal-optional-chaining" "^7.0.0"
+    "@babel/plugin-transform-async-to-generator" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
+    "@babel/plugin-transform-modules-commonjs" "^7.0.0"
+    "@babel/register" "^7.0.0"
+    core-js "^2.2.2"
+    escape-string-regexp "^1.0.5"
+
+metro-babel7-plugin-react-transform@0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-babel7-plugin-react-transform/-/metro-babel7-plugin-react-transform-0.49.1.tgz#eb34c351abe217df942113d95752a0989f4aa38e"
+  integrity sha512-54kIDUaPNC0we/mm4L0xHNcsQOu79ojTIsPZSciiAX2z5fRt7IBxaaV2EaQ/nSDQ5xBzDXQ0kbM7oLliq7IuPw==
+  dependencies:
+    "@babel/helper-module-imports" "^7.0.0"
+
+metro-babel7-plugin-react-transform@0.49.2:
+  version "0.49.2"
+  resolved "https://registry.yarnpkg.com/metro-babel7-plugin-react-transform/-/metro-babel7-plugin-react-transform-0.49.2.tgz#d4c43faa6f2b91cc1b244a36a5d708ae8d39dbb2"
+  integrity sha512-LpJT8UvqF/tvVqEwiLUTMjRPhEGdI8e2dr3424XaRANba3j0nqmrbKdJQsPE8TrcqMWR4RHmfsXk0ti5QrEvJg==
+  dependencies:
+    "@babel/helper-module-imports" "^7.0.0"
+
+metro-cache@0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-cache/-/metro-cache-0.49.1.tgz#eebbf64d1b7711ca311444727e1e7a0d8cf3ebe3"
+  integrity sha512-6+B4E8XLUXocogWfMGg+lEpAxEdSsjzcu6Emr+ORhEnBY7P2nln951SHJ2MXYGGyrW3j85awQoj5xUqZUA44sg==
+  dependencies:
+    jest-serializer "24.0.0-alpha.4"
+    metro-core "0.49.1"
+    mkdirp "^0.5.1"
+    rimraf "^2.5.4"
+
+metro-cache@0.49.2:
+  version "0.49.2"
+  resolved "https://registry.yarnpkg.com/metro-cache/-/metro-cache-0.49.2.tgz#355dd3dba9fbd805a7ca6f55646216d35ca98225"
+  integrity sha512-GFeK4bPQn/U9bbRlVPhu2dYMe/b/GsNOFPEResOxr0kQreHV81rs6Jzcr4pU+9HY7vFiEQ1oggnsLUmANuRyPQ==
+  dependencies:
+    jest-serializer "24.0.0-alpha.6"
+    metro-core "0.49.2"
+    mkdirp "^0.5.1"
+    rimraf "^2.5.4"
+
+metro-config@0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-config/-/metro-config-0.49.1.tgz#4db688461bc9a4bdebc884e1e65e9f22c172aadd"
+  integrity sha512-mFA9TZOayRZWcB1c6qE4HKNsQOnPfBzsc+buNlGW4/eQBZb1GKl7TLMp8izV5Xwzmq0QkNuM5IVxqXIIC3ydHA==
+  dependencies:
+    cosmiconfig "^5.0.5"
+    metro "0.49.1"
+    metro-cache "0.49.1"
+    metro-core "0.49.1"
+    pretty-format "24.0.0-alpha.4"
+
+metro-config@0.49.2, metro-config@^0.49.1:
+  version "0.49.2"
+  resolved "https://registry.yarnpkg.com/metro-config/-/metro-config-0.49.2.tgz#d9dd0cc32fdb9731b4685b0019c98874a6e4443b"
+  integrity sha512-olh50qIMWd+Mj47TQeFnIW9NIquMpfq2g2NT5k+rwI38Xfk+KBnV4BamxtzZuViH7eQI06+Cdyu4NvcZffBXGg==
+  dependencies:
+    cosmiconfig "^5.0.5"
+    metro "0.49.2"
+    metro-cache "0.49.2"
+    metro-core "0.49.2"
+    pretty-format "24.0.0-alpha.6"
+
+metro-core@0.49.1, metro-core@^0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-core/-/metro-core-0.49.1.tgz#552ccbd21273fb4a6ae88b1407a79d84966e47cc"
+  integrity sha512-YcoCqPpKL/5Zto3bG2BM/WFt/P2bP7hVwEFLo50wuX6iE3SHYBjzgPeYCY7oc2IuqT0z6igxqdbHaLLrEqQg7w==
+  dependencies:
+    jest-haste-map "24.0.0-alpha.4"
+    lodash.throttle "^4.1.1"
+    metro-resolver "0.49.1"
+    wordwrap "^1.0.0"
+
+metro-core@0.49.2:
+  version "0.49.2"
+  resolved "https://registry.yarnpkg.com/metro-core/-/metro-core-0.49.2.tgz#e3d7f9f02454863fc047bd75c2e37d5544c72d1a"
+  integrity sha512-kqhvNPOUTUWOqfm4nFF8l0zWMp2BKO1BUx5KY7osFnVTUpDkuq9Iy433FqEFVhA2jUISrmnd0CTIPcDQyFNllQ==
+  dependencies:
+    jest-haste-map "24.0.0-alpha.6"
+    lodash.throttle "^4.1.1"
+    metro-resolver "0.49.2"
+    wordwrap "^1.0.0"
+
+metro-memory-fs@^0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-memory-fs/-/metro-memory-fs-0.49.1.tgz#e1f107c9d6b01492e4bf7d3261e59fa81373dee9"
+  integrity sha512-x7BRfcZ4J9N9BKHnofZq0+BwZ9YLVsiaCb3gC69/ibHpZGIHrfq5y5mEtidnQ00TLyT4t+otnislvsuZRofvxg==
+
+metro-minify-uglify@0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-minify-uglify/-/metro-minify-uglify-0.49.1.tgz#4a06d9c908872a6080ec649e9206c42c20fd5d44"
+  integrity sha512-OqtakK7nEwjoGVhNL5BVxcveHK7DeICrkpI9JYfEVAEwyBC8FkQkvOVWbU4O2yX2Hcz/TuTjnGgeKKkCZI4lGw==
+  dependencies:
+    uglify-es "^3.1.9"
+
+metro-minify-uglify@0.49.2:
+  version "0.49.2"
+  resolved "https://registry.yarnpkg.com/metro-minify-uglify/-/metro-minify-uglify-0.49.2.tgz#f3b8615cb0e9afd714e4952842bcb9f4d71b4822"
+  integrity sha512-LfnR5N2784pnHe5ShioNkLHyUA1unDU6iLivehX2Waxno1oIP3xKYl/u/VTDET4L8AvLwa5HFACE2hbiWjGQ2Q==
+  dependencies:
+    uglify-es "^3.1.9"
+
+metro-react-native-babel-preset@0.49.1:
+  version "0.49.1"
+  resolved "https://registry.yarnpkg.com/metro-react-native-babel-preset/-/metro-react-native-babel-preset-0.49.1.tgz#6df6195599055fe6010b81ad0e5a47c199e6a9c0"
+  integrity sha512-GYg2Sl7uVoRIvU4d3aN6UB65/aHxEU9GmjzFc7NWMQ1zkMZeRvcJaqZ5ijurNQLgN1TyEsIsKrV+3/KV9Xxnog==
+  dependencies:
+    "@babel/plugin-proposal-class-properties" "^7.0.0"
+    "@babel/plugin-proposal-export-default-from" "^7.0.0"
+    "@babel/plugin-proposal-nullish-coalescing-operator" "^7.0.0"
+    "@babel/plugin-proposal-object-rest-spread" "^7.0.0"
+    "@babel/plugin-proposal-optional-catch-binding" "^7.0.0"
+    "@babel/plugin-proposal-optional-chaining" "^7.0.0"
+    "@babel/plugin-syntax-dynamic-import" "^7.0.0"
+    "@babel/plugin-syntax-export-default-from" "^7.0.0"
+    "@babel/plugin-transform-arrow-functions" "^7.0.0"
+    "@babel/plugin-transform-block-scoping" "^7.0.0"
+    "@babel/plugin-transform-classes" "^7.0.0"
+    "@babel/plugin-transform-computed-properties" "^7.0.0"
+    "@babel/plugin-transform-destructuring" "^7.0.0"
+    "@babel/plugin-transform-exponentiation-operator" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
+    "@babel/plugin-transform-for-of" "^7.0.0"
+    "@babel/plugin-transform-function-name" "^7.0.0"
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+  version "2.11.0"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.11.0.tgz#574e360e4d954ab16966ec102c0c049fd961a099"
+  integrity sha512-F4miItu2rGnV2ySkXOQoA8FKz/SR2Q2sWP0sbTxNxz/tuokeC8WxOhPMcwi0qIyGtVn/rrSeLbvVkznqCdwYnw==
+
+nanomatch@^1.2.9:
+  version "1.2.13"
+  resolved "https://registry.yarnpkg.com/nanomatch/-/nanomatch-1.2.13.tgz#b87a8aa4fc0de8fe6be88895b38983ff265bd119"
+  integrity sha512-fpoe2T0RbHwBTBUOftAfBPaDEi06ufaUai0mE6Yn1kacc3SnTErfb/h+X94VXzI64rKFHYImXSvdwGGCmwOqCA==
+  dependencies:
+    arr-diff "^4.0.0"
+    array-unique "^0.3.2"
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    fragment-cache "^0.2.1"
+    is-windows "^1.0.2"
+    kind-of "^6.0.2"
+    object.pick "^1.3.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+natural-compare@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
+  integrity sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=
+
+ncp@~2.0.0:
+  version "2.0.0"
+  resolved "http://registry.npmjs.org/ncp/-/ncp-2.0.0.tgz#195a21d6c46e361d2fb1281ba38b91e9df7bdbb3"
+  integrity sha1-GVoh1sRuNh0vsSgbo4uR6d9727M=
+
+needle@^2.2.1:
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/needle/-/needle-2.2.3.tgz#c1b04da378cd634d8befe2de965dc2cfb0fd65ca"
+  integrity sha512-GPL22d/U9cai87FcCPO6e+MT3vyHS2j+zwotakDc7kE2DtUAqFKMXLJCTtRp+5S75vXIwQPvIxkvlctxf9q4gQ==
+  dependencies:
+    debug "^2.1.2"
+    iconv-lite "^0.4.4"
+    sax "^1.2.4"
+
+negotiator@0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
+  integrity sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk=
+
+nice-try@^1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
+  integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
+
+node-fetch@^1.0.1:
+  version "1.7.3"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
+  integrity sha512-NhZ4CsKx7cYm2vSrBAr2PvFOe6sWDf0UYLRqA6svUYg7+/TSfVAu49jYC4BvQ4Sms9SZgdqGBgroqfDhJdTyKQ==
+  dependencies:
+    encoding "^0.1.11"
+    is-stream "^1.0.1"
+
+node-fetch@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.2.0.tgz#4ee79bde909262f9775f731e3656d0db55ced5b5"
+  integrity sha512-OayFWziIxiHY8bCUyLX6sTpDH8Jsbp4FfYd1j1f7vZyfgkcOnAyM4oQR16f8a0s7Gl/viMGRey8eScYk4V4EZA==
+
+node-int64@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
+  integrity sha1-h6kGXNs1XTGC2PlM4RGIuCXGijs=
+
+node-modules-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+  integrity sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=
+
+node-notifier@^5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/node-notifier/-/node-notifier-5.2.1.tgz#fa313dd08f5517db0e2502e5758d664ac69f9dea"
+  integrity sha512-MIBs+AAd6dJ2SklbbE8RUDRlIVhU8MaNLh1A9SUZDUHPiZkWLFde6UNwG41yQHZEToHgJMXqyVZ9UcS/ReOVTg==
+  dependencies:
+    growly "^1.3.0"
+    semver "^5.4.1"
+    shellwords "^0.1.1"
+    which "^1.3.0"
+
+node-pre-gyp@^0.10.0:
+  version "0.10.3"
+  resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.10.3.tgz#3070040716afdc778747b61b6887bf78880b80fc"
+  integrity sha512-d1xFs+C/IPS8Id0qPTZ4bUT8wWryfR/OzzAFxweG+uLN85oPzyo2Iw6bVlLQ/JOdgNonXLCoRyqDzDWq4iw72A==
+  dependencies:
+    detect-libc "^1.0.2"
+    mkdirp "^0.5.1"
+    needle "^2.2.1"
+    nopt "^4.0.1"
+    npm-packlist "^1.1.6"
+    npmlog "^4.0.2"
+    rc "^1.2.7"
+    rimraf "^2.6.1"
+    semver "^5.3.0"
+    tar "^4"
+
+node-version@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/node-version/-/node-version-1.2.0.tgz#34fde3ffa8e1149bd323983479dda620e1b5060d"
+  integrity sha512-ma6oU4Sk0qOoKEAymVoTvk8EdXEobdS7m/mAGhDJ8Rouugho48crHBORAmy5BoOcv8wraPM6xumapQp5hl4iIQ==
+
+nopt@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-4.0.1.tgz#d0d4685afd5415193c8c7505602d0d17cd64474d"
+  integrity sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=
+  dependencies:
+    abbrev "1"
+    osenv "^0.1.4"
+
+normalize-package-data@^2.3.2:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.4.0.tgz#12f95a307d58352075a04907b84ac8be98ac012f"
+  integrity sha512-9jjUFbTPfEy3R/ad/2oNbKtW9Hgovl5O1FvFWKkKblNXoN/Oou6+9+KKohPK13Yc3/TyunyWhJp6gvRNR/PPAw==
+  dependencies:
+    hosted-git-info "^2.1.4"
+    is-builtin-module "^1.0.0"
+    semver "2 || 3 || 4 || 5"
+    validate-npm-package-license "^3.0.1"
+
+normalize-path@^2.0.1, normalize-path@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.1.1.tgz#1ab28b556e198363a8c1a6f7e6fa20137fe6aed9"
+  integrity sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=
+  dependencies:
+    remove-trailing-separator "^1.0.1"
+
+npm-bundled@^1.0.1:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/npm-bundled/-/npm-bundled-1.0.5.tgz#3c1732b7ba936b3a10325aef616467c0ccbcc979"
+  integrity sha512-m/e6jgWu8/v5niCUKQi9qQl8QdeEduFA96xHDDzFGqly0OOjI7c+60KM/2sppfnUU9JJagf+zs+yGhqSOFj71g==
+
+npm-packlist@^1.1.6:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/npm-packlist/-/npm-packlist-1.1.11.tgz#84e8c683cbe7867d34b1d357d893ce29e28a02de"
+  integrity sha512-CxKlZ24urLkJk+9kCm48RTQ7L4hsmgSVzEk0TLGPzzyuFxD7VNgy5Sl24tOLMzQv773a/NeJ1ce1DKeacqffEA==
+  dependencies:
+    ignore-walk "^3.0.1"
+    npm-bundled "^1.0.1"
+
+npm-run-path@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
+  integrity sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=
+  dependencies:
+    path-key "^2.0.0"
+
+npmlog@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-2.0.4.tgz#98b52530f2514ca90d09ec5b22c8846722375692"
+  integrity sha1-mLUlMPJRTKkNCexbIsiEZyI3VpI=
+  dependencies:
+    ansi "~0.3.1"
+    are-we-there-yet "~1.1.2"
+    gauge "~1.2.5"
+
+npmlog@^4.0.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
+  integrity sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==
+  dependencies:
+    are-we-there-yet "~1.1.2"
+    console-control-strings "~1.1.0"
+    gauge "~2.7.3"
+    set-blocking "~2.0.0"
+
+nullthrows@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/nullthrows/-/nullthrows-1.1.0.tgz#832bb19ef7fedab989f81675c846e2858a3917a2"
+  integrity sha512-YoigDq49JRqVCUlb4XlwZirXQiNCoXdwoyfklXJAEYHN+XKHWgDkrcWxNgxEtP7N+XF9Akp7Lr6wLq8HZxLttw==
+
+number-is-nan@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
+  integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
+
+nwsapi@^2.0.7:
+  version "2.0.9"
+  resolved "https://registry.yarnpkg.com/nwsapi/-/nwsapi-2.0.9.tgz#77ac0cdfdcad52b6a1151a84e73254edc33ed016"
+  integrity sha512-nlWFSCTYQcHk/6A9FFnfhKc14c3aFhfdNBXgo8Qgi9QTBu/qg3Ww+Uiz9wMzXd1T8GFxPc2QIHB6Qtf2XFryFQ==
+
+oauth-sign@~0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
+  integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
+
+object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
+
+object-copy@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/object-copy/-/object-copy-0.1.0.tgz#7e7d858b781bd7c991a41ba975ed3812754e998c"
+  integrity sha1-fn2Fi3gb18mRpBupde04EnVOmYw=
+  dependencies:
+    copy-descriptor "^0.1.0"
+    define-property "^0.2.5"
+    kind-of "^3.0.3"
+
+object-keys@^1.0.12:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.12.tgz#09c53855377575310cca62f55bb334abff7b3ed2"
+  integrity sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag==
+
+object-visit@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
+  integrity sha1-95xEk68MU3e1n+OdOV5BBC3QRbs=
+  dependencies:
+    isobject "^3.0.0"
+
+object.getownpropertydescriptors@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
+  integrity sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.5.1"
+
+object.omit@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/object.omit/-/object.omit-2.0.1.tgz#1a9c744829f39dbb858c76ca3579ae2a54ebd1fa"
+  integrity sha1-Gpx0SCnznbuFjHbKNXmuKlTr0fo=
+  dependencies:
+    for-own "^0.1.4"
+    is-extendable "^0.1.1"
+
+object.pick@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/object.pick/-/object.pick-1.3.0.tgz#87a10ac4c1694bd2e1cbf53591a66141fb5dd747"
+  integrity sha1-h6EKxMFpS9Lhy/U1kaZhQftd10c=
+  dependencies:
+    isobject "^3.0.1"
+
+on-finished@~2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
+  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
+  dependencies:
+    ee-first "1.1.1"
+
+on-headers@~1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-1.0.1.tgz#928f5d0f470d49342651ea6794b0857c100693f7"
+  integrity sha1-ko9dD0cNSTQmUepnlLCFfBAGk/c=
+
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+onetime@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/onetime/-/onetime-2.0.1.tgz#067428230fd67443b2794b22bba528b6867962d4"
+  integrity sha1-BnQoIw/WdEOyeUsiu6UotoZ5YtQ=
+  dependencies:
+    mimic-fn "^1.0.0"
+
+opn@^3.0.2:
+  version "3.0.3"
+  resolved "http://registry.npmjs.org/opn/-/opn-3.0.3.tgz#b6d99e7399f78d65c3baaffef1fb288e9b85243a"
+  integrity sha1-ttmec5n3jWXDuq/+8fsojpuFJDo=
+  dependencies:
+    object-assign "^4.0.1"
+
+optimist@^0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
+  integrity sha1-2j6nRob6IaGaERwybpDrFaAZZoY=
+  dependencies:
+    minimist "~0.0.1"
+    wordwrap "~0.0.2"
+
+optionator@^0.8.1, optionator@^0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"
+  integrity sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=
+  dependencies:
+    deep-is "~0.1.3"
+    fast-levenshtein "~2.0.4"
+    levn "~0.3.0"
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+    wordwrap "~1.0.0"
+
+options@>=0.0.5:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
+  integrity sha1-7CLTEoBrtT5zF3Pnza788cZDEo8=
+
+os-homedir@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
+  integrity sha1-/7xJiDNuDoM94MFox+8VISGqf7M=
+
+os-locale@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-2.1.0.tgz#42bc2900a6b5b8bd17376c8e882b65afccf24bf2"
+  integrity sha512-3sslG3zJbEYcaC4YVAvDorjGxc7tv6KVATnLPZONiljsUncvihe9BQoVCEs0RZ1kmf4Hk9OBqlZfJZWI4GanKA==
+  dependencies:
+    execa "^0.7.0"
+    lcid "^1.0.0"
+    mem "^1.1.0"
+
+os-locale@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-3.0.1.tgz#3b014fbf01d87f60a1e5348d80fe870dc82c4620"
+  integrity sha512-7g5e7dmXPtzcP4bgsZ8ixDVqA7oWYuEz4lOSujeWyliPai4gfVDiFIcwBg3aGCPnmSGfzOKTK3ccPn0CKv3DBw==
+  dependencies:
+    execa "^0.10.0"
+    lcid "^2.0.0"
+    mem "^4.0.0"
+
+os-tmpdir@^1.0.0, os-tmpdir@^1.0.1, os-tmpdir@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
+  integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
+
+osenv@^0.1.4:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.5.tgz#85cdfafaeb28e8677f416e287592b5f3f49ea410"
+  integrity sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==
+  dependencies:
+    os-homedir "^1.0.0"
+    os-tmpdir "^1.0.0"
+
+p-defer@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
+  integrity sha1-n26xgvbJqozXQwBKfU+WsZaw+ww=
+
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+  integrity sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4=
+
+p-is-promise@^1.1.0:
+  version "1.1.0"
+  resolved "http://registry.npmjs.org/p-is-promise/-/p-is-promise-1.1.0.tgz#9c9456989e9f6588017b0434d56097675c3da05e"
+  integrity sha1-nJRWmJ6fZYgBewQ01WCXZ1w9oF4=
+
+p-limit@^1.1.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.3.0.tgz#b86bd5f0c25690911c7590fcbfc2010d54b3ccb8"
+  integrity sha512-vvcXsLAJ9Dr5rQOPk7toZQZJApBl2K4J6dANSsEuh6QI41JYcsS/qhTGa9ErIUUgK3WNQoJYvylxvjqmiqEA9Q==
+  dependencies:
+    p-try "^1.0.0"
+
+p-limit@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.0.0.tgz#e624ed54ee8c460a778b3c9f3670496ff8a57aec"
+  integrity sha512-fl5s52lI5ahKCernzzIyAP0QAZbGIovtVHGwpcu1Jr/EpzLVDI2myISHwGqK7m8uQFugVWSrbxH7XnhGtvEc+A==
+  dependencies:
+    p-try "^2.0.0"
+
+p-locate@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
+  integrity sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=
+  dependencies:
+    p-limit "^1.1.0"
+
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
+p-try@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
+  integrity sha1-y8ec26+P1CKOE/Yh8rGiN8GyB7M=
+
+p-try@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.0.0.tgz#85080bb87c64688fa47996fe8f7dfbe8211760b1"
+  integrity sha512-hMp0onDKIajHfIkdRk3P4CdCmErkYAxxDtP3Wx/4nZ3aGlau2VKh3mZpcuFkH27WQkL/3WBCPOktzA9ZOAnMQQ==
+
+parse-glob@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/parse-glob/-/parse-glob-3.0.4.tgz#b2c376cfb11f35513badd173ef0bb6e3a388391c"
+  integrity sha1-ssN2z7EfNVE7rdFz7wu246OIORw=
+  dependencies:
+    glob-base "^0.3.0"
+    is-dotfile "^1.0.0"
+    is-extglob "^1.0.0"
+    is-glob "^2.0.0"
+
+parse-json@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
+  integrity sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=
+  dependencies:
+    error-ex "^1.2.0"
+
+parse-json@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
+  integrity sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=
+  dependencies:
+    error-ex "^1.3.1"
+    json-parse-better-errors "^1.0.1"
+
+parse5@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-4.0.0.tgz#6d78656e3da8d78b4ec0b906f7c08ef1dfe3f608"
+  integrity sha512-VrZ7eOd3T1Fk4XWNXMgiGBK/z0MG48BWG2uQNU4I72fkQuKUTZpl+u9k+CxEG0twMVzSmXEEz12z5Fnw1jIQFA==
+
+parseurl@~1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
+  integrity sha1-/CidTtiZMRlGDBViUyYs3I3mW/M=
+
+pascalcase@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
+  integrity sha1-s2PlXoAGym/iF4TS2yK9FdeRfxQ=
+
+path-exists@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-2.1.0.tgz#0feb6c64f0fc518d9a754dd5efb62c7022761f4b"
+  integrity sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=
+  dependencies:
+    pinkie-promise "^2.0.0"
+
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
+path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+path-is-inside@^1.0.1, path-is-inside@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
+  integrity sha1-NlQX3t5EQw0cEa9hAn+s8HS9/FM=
+
+path-key@^2.0.0, path-key@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+  integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
+
+path-parse@^1.0.5:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
+path-type@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
+  integrity sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=
+  dependencies:
+    graceful-fs "^4.1.2"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+
+path-type@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-2.0.0.tgz#f012ccb8415b7096fc2daa1054c3d72389594c73"
+  integrity sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=
+  dependencies:
+    pify "^2.0.0"
+
+pegjs@^0.10.0:
+  version "0.10.0"
+  resolved "http://registry.npmjs.org/pegjs/-/pegjs-0.10.0.tgz#cf8bafae6eddff4b5a7efb185269eaaf4610ddbd"
+  integrity sha1-z4uvrm7d/0tafvsYUmnqr0YQ3b0=
+
+performance-now@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
+  integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
+
+pify@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
+  integrity sha1-7RQaasBDqEnqWISY59yosVMw6Qw=
+
+pify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
+  integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
+
+pinkie-promise@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/pinkie-promise/-/pinkie-promise-2.0.1.tgz#2135d6dfa7a358c069ac9b178776288228450ffa"
+  integrity sha1-ITXW36ejWMBprJsXh3YogihFD/o=
+  dependencies:
+    pinkie "^2.0.0"
+
+pinkie@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
+  integrity sha1-clVrgM+g1IqXToDnckjoDtT3+HA=
+
+pirates@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.0.tgz#850b18781b4ac6ec58a43c9ed9ec5fe6796addbd"
+  integrity sha512-8t5BsXy1LUIjn3WWOlOuFDuKswhQb/tkak641lvBgmPOBUQHXveORtlMCp6OdPV1dtuTaEahKA8VNz6uLfKBtA==
+  dependencies:
+    node-modules-regexp "^1.0.0"
+
+pkg-dir@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-2.0.0.tgz#f6d5d1109e19d63edf428e0bd57e12777615334b"
+  integrity sha1-9tXREJ4Z1j7fQo4L1X4Sd3YVM0s=
+  dependencies:
+    find-up "^2.1.0"
+
+pkg-dir@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-3.0.0.tgz#2749020f239ed990881b1f71210d51eb6523bea3"
+  integrity sha512-/E57AYkoeQ25qkxMj5PBOVgF8Kiu/h7cYS30Z5+R7WaiCCBfLq58ZI/dSeaEKb9WVJV5n/03QwrN3IeWIFllvw==
+  dependencies:
+    find-up "^3.0.0"
+
+plist@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/plist/-/plist-2.0.1.tgz#0a32ca9481b1c364e92e18dc55c876de9d01da8b"
+  integrity sha1-CjLKlIGxw2TpLhjcVch23p0B2os=
+  dependencies:
+    base64-js "1.1.2"
+    xmlbuilder "8.2.2"
+    xmldom "0.1.x"
+
+plist@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/plist/-/plist-3.0.1.tgz#a9b931d17c304e8912ef0ba3bdd6182baf2e1f8c"
+  integrity sha512-GpgvHHocGRyQm74b6FWEZZVRroHKE1I0/BTjAmySaohK+cUn+hZpbqXkc3KWgW3gQYkqcQej35FohcT0FRlkRQ==
+  dependencies:
+    base64-js "^1.2.3"
+    xmlbuilder "^9.0.7"
+    xmldom "0.1.x"
+
+plugin-error@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/plugin-error/-/plugin-error-0.1.2.tgz#3b9bb3335ccf00f425e07437e19276967da47ace"
+  integrity sha1-O5uzM1zPAPQl4HQ34ZJ2ln2kes4=
+  dependencies:
+    ansi-cyan "^0.1.1"
+    ansi-red "^0.1.1"
+    arr-diff "^1.0.1"
+    arr-union "^2.0.1"
+    extend-shallow "^1.1.2"
+
+pluralize@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-7.0.0.tgz#298b89df8b93b0221dbf421ad2b1b1ea23fc6777"
+  integrity sha512-ARhBOdzS3e41FbkW/XWrTEtukqqLoK5+Z/4UeDaLuSW+39JPeFgs4gCGqsrJHVZX0fUrx//4OF0K1CUGwlIFow==
+
+pn@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/pn/-/pn-1.1.0.tgz#e2f4cef0e219f463c179ab37463e4e1ecdccbafb"
+  integrity sha512-2qHaIQr2VLRFoxe2nASzsV6ef4yOOH+Fi9FBOVH6cqeSgUnoyySPZkxzLuzd+RYOQTRpROA0ztTMqxROKSb/nA==
+
+posix-character-classes@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
+  integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
+
+prelude-ls@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
+  integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
+
+preserve@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
+  integrity sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks=
+
+prettier@1.13.6:
+  version "1.13.6"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.13.6.tgz#00ae0b777ad92f81a9e7a1df2f0470b6dab0cb44"
+  integrity sha512-p5eqCNiohWZN++7aJXUVj0JgLqHCPLf9GLIcLBHGNWs4Y9FJOPs6+KNO2WT0udJIQJTbeZFrJkjzjcb8fkAYYQ==
+
+pretty-format@24.0.0-alpha.4:
+  version "24.0.0-alpha.4"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-24.0.0-alpha.4.tgz#cc1f7497e2496b71f8ad99f1526096e515fada03"
+  integrity sha512-icvbBt3XlLEVqPHdHwR2Ou9+hezS9Eccd+mA+fXfOU7T9t7ClOpq2HgCwlyw+3WogccCubKWnmzyrA/3ZZ/aOA==
+  dependencies:
+    ansi-regex "^4.0.0"
+    ansi-styles "^3.2.0"
+
+pretty-format@24.0.0-alpha.6, pretty-format@^24.0.0-alpha.6:
+  version "24.0.0-alpha.6"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-24.0.0-alpha.6.tgz#25ad2fa46b342d6278bf241c5d2114d4376fbac1"
+  integrity sha512-zG2m6YJeuzwBFqb5EIdmwYVf30sap+iMRuYNPytOccEXZMAJbPIFGKVJ/U0WjQegmnQbRo9CI7j6j3HtDaifiA==
+  dependencies:
+    ansi-regex "^4.0.0"
+    ansi-styles "^3.2.0"
+
+pretty-format@^23.6.0:
+  version "23.6.0"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-23.6.0.tgz#5eaac8eeb6b33b987b7fe6097ea6a8a146ab5760"
+  integrity sha512-zf9NV1NSlDLDjycnwm6hpFATCGl/K1lt0R/GdkAK2O5LN/rwJoB+Mh93gGJjut4YbmecbfgLWVGSTCr0Ewvvbw==
+  dependencies:
+    ansi-regex "^3.0.0"
+    ansi-styles "^3.2.0"
+
+private@^0.1.6, private@^0.1.8:
+  version "0.1.8"
+  resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
+  integrity sha512-VvivMrbvd2nKkiG38qjULzlc+4Vx4wm/whI9pQD35YrARNnhxeiRktSOhSukRLFNlzg6Br/cJPet5J/u19r/mg==
+
+process-nextick-args@~2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.0.tgz#a37d732f4271b4ab1ad070d35508e8290788ffaa"
+  integrity sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==
+
+process@~0.5.1:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
+  integrity sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8=
+
+progress@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.0.tgz#8a1be366bf8fc23db2bd23f10c6fe920b4389d1f"
+  integrity sha1-ihvjZr+Pwj2yvSPxDG/pILQ4nR8=
+
+promise-polyfill@^6.0.1:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/promise-polyfill/-/promise-polyfill-6.1.0.tgz#dfa96943ea9c121fca4de9b5868cb39d3472e057"
+  integrity sha1-36lpQ+qcEh/KTem1hoyznTRy4Fc=
+
+promise@^7.1.1:
+  version "7.3.1"
+  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
+  integrity sha512-nolQXZ/4L+bP/UGlkfaIujX9BKxGwmQ9OT4mOt5yvy8iK1h3wqTEJCijzGANTCCl9nWjY41juyAn2K3Q1hLLTg==
+  dependencies:
+    asap "~2.0.3"
+
+prompts@^1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/prompts/-/prompts-1.1.1.tgz#c687590e472c08cd84cfa4b8694b1cab5de45144"
+  integrity sha512-lC0+ifgWNKhTNF28Wj41TOXE+gEzrHcDqkCRHMbv39afuGT1ClekTgcVF+r2VuSgNr3Fy2hq6Pu3Mlt43u+QlQ==
+  dependencies:
+    kleur "^2.0.1"
+    sisteransi "^1.0.0"
+
+prop-types@^15.5.8, prop-types@^15.6.0, prop-types@^15.6.2:
+  version "15.6.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.2.tgz#05d5ca77b4453e985d60fc7ff8c859094a497102"
+  integrity sha512-3pboPvLiWD7dkI3qf3KbUe6hKFKa52w+AE0VCqECtf+QHAKgOL37tTaNCnuX1nAAQ4ZhyP+kYVKf8rLmJ/feDQ==
+  dependencies:
+    loose-envify "^1.3.1"
+    object-assign "^4.1.1"
+
+proper-lockfile@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/proper-lockfile/-/proper-lockfile-3.0.2.tgz#d30b3b83ecb157e08fe0d411f2393bc384b77ad1"
+  integrity sha512-SDrSRyuKE1jM9b2kdpL6SA78wgG+M+fZKe2zbWkURsshOzUmoOornXQcasKQRP9hGhMoEILNpSbWcYoymoB5cA==
+  dependencies:
+    graceful-fs "^4.1.11"
+    retry "^0.10.1"
+
+pseudomap@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
+  integrity sha1-8FKijacOYYkX7wqKw0wa5aaChrM=
+
+psl@^1.1.24:
+  version "1.1.29"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.1.29.tgz#60f580d360170bb722a797cc704411e6da850c67"
+  integrity sha512-AeUmQ0oLN02flVHXWh9sSJF7mcdFq0ppid/JkErufc3hGIV/AMa8Fo9VgDo/cT2jFdOWoFvHp90qqBH54W+gjQ==
+
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  integrity sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
+punycode@^1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
+  integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
+
+punycode@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+qs@~6.5.2:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
+  integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
+
+randomatic@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/randomatic/-/randomatic-3.1.0.tgz#36f2ca708e9e567f5ed2ec01949026d50aa10116"
+  integrity sha512-KnGPVE0lo2WoXxIZ7cPR8YBpiol4gsSuOwDSg410oHh80ZMp5EiypNqL2K4Z77vJn6lB5rap7IkAmcUlalcnBQ==
+  dependencies:
+    is-number "^4.0.0"
+    kind-of "^6.0.0"
+    math-random "^1.0.1"
+
+range-parser@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
+  integrity sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4=
+
+rc@^1.2.7:
+  version "1.2.8"
+  resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
+  integrity sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==
+  dependencies:
+    deep-extend "^0.6.0"
+    ini "~1.3.0"
+    minimist "^1.2.0"
+    strip-json-comments "~2.0.1"
+
+react-clone-referenced-element@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/react-clone-referenced-element/-/react-clone-referenced-element-1.1.0.tgz#9cdda7f2aeb54fea791f3ab8c6ab96c7a77d0158"
+  integrity sha512-FKOsfKbBkPxYE8576EM6uAfHC4rnMpLyH6/TJUL4WcHUEB3EUn8AxPjnnV/IiwSSzsClvHYK+sDELKN/EJ0WYg==
+
+react-deep-force-update@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/react-deep-force-update/-/react-deep-force-update-1.1.2.tgz#3d2ae45c2c9040cbb1772be52f8ea1ade6ca2ee1"
+  integrity sha512-WUSQJ4P/wWcusaH+zZmbECOk7H5N2pOIl0vzheeornkIMhu+qrNdGFm0bDZLCb0hSF0jf/kH1SgkNGfBdTc4wA==
+
+react-devtools-core@^3.4.2:
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/react-devtools-core/-/react-devtools-core-3.4.2.tgz#4888b428f1db9a3078fdff66a1da14f71fb1680e"
+  integrity sha512-1pqbxenMeOiVPLf5Fm69woc+Q/pb/lLfWCizJuVJQDm9v7x0fcr76VMcq6Q30Onv3ikkfrlAQgOcOdCk/0t5tA==
+  dependencies:
+    shell-quote "^1.6.1"
+    ws "^3.3.1"
+
+react-is@^16.6.3:
+  version "16.7.0"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.7.0.tgz#c1bd21c64f1f1364c6f70695ec02d69392f41bfa"
+  integrity sha512-Z0VRQdF4NPDoI0tsXVMLkJLiwEBa+RP66g0xDHxgxysxSoCUccSten4RTF/UFvZF1dZvZ9Zu1sx+MDXwcOR34g==
+
+react-native-dummy@0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/react-native-dummy/-/react-native-dummy-0.1.0.tgz#8ec015b814df45acfac458150b67f8a947b36b93"
+  integrity sha512-IVgM7ZtoQPfbduQIj8DrSaDyCkBDZBoiJMLMIqdDl5FJP3hJsakVybl3TvUOycU6bg+kPQY8znu0akugosh/gw==
+
+react-proxy@^1.1.7:
+  version "1.1.8"
+  resolved "https://registry.yarnpkg.com/react-proxy/-/react-proxy-1.1.8.tgz#9dbfd9d927528c3aa9f444e4558c37830ab8c26a"
+  integrity sha1-nb/Z2SdSjDqp9ETkVYw3gwq4wmo=
+  dependencies:
+    lodash "^4.6.1"
+    react-deep-force-update "^1.0.0"
+
+react-test-renderer@16.6.3:
+  version "16.6.3"
+  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.6.3.tgz#5f3a1a7d5c3379d46f7052b848b4b72e47c89f38"
+  integrity sha512-B5bCer+qymrQz/wN03lT0LppbZUDRq6AMfzMKrovzkGzfO81a9T+PWQW6MzkWknbwODQH/qpJno/yFQLX5IWrQ==
+  dependencies:
+    object-assign "^4.1.1"
+    prop-types "^15.6.2"
+    react-is "^16.6.3"
+    scheduler "^0.11.2"
+
+react-transform-hmr@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/react-transform-hmr/-/react-transform-hmr-1.0.4.tgz#e1a40bd0aaefc72e8dfd7a7cda09af85066397bb"
+  integrity sha1-4aQL0Krvxy6N/Xp82gmvhQZjl7s=
+  dependencies:
+    global "^4.3.0"
+    react-proxy "^1.1.7"
+
+react@16.6.3:
+  version "16.6.3"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.6.3.tgz#25d77c91911d6bbdd23db41e70fb094cc1e0871c"
+  integrity sha512-zCvmH2vbEolgKxtqXL2wmGCUxUyNheYn/C+PD1YAjfxHC54+MhdruyhO7QieQrYsYeTxrn93PM2y0jRH1zEExw==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+    prop-types "^15.6.2"
+    scheduler "^0.11.2"
+
+read-pkg-up@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
+  integrity sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=
+  dependencies:
+    find-up "^1.0.0"
+    read-pkg "^1.0.0"
+
+read-pkg-up@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-2.0.0.tgz#6b72a8048984e0c41e79510fd5e9fa99b3b549be"
+  integrity sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=
+  dependencies:
+    find-up "^2.0.0"
+    read-pkg "^2.0.0"
+
+read-pkg@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-1.1.0.tgz#f5ffaa5ecd29cb31c0474bca7d756b6bb29e3f28"
+  integrity sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=
+  dependencies:
+    load-json-file "^1.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^1.0.0"
+
+read-pkg@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-2.0.0.tgz#8ef1c0623c6a6db0dc6713c4bfac46332b2368f8"
+  integrity sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=
+  dependencies:
+    load-json-file "^2.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^2.0.0"
+
+readable-stream@^2.0.1, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2:
+  version "2.3.6"
+  resolved "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
+  integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.3"
+    isarray "~1.0.0"
+    process-nextick-args "~2.0.0"
+    safe-buffer "~5.1.1"
+    string_decoder "~1.1.1"
+    util-deprecate "~1.0.1"
+
+realpath-native@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/realpath-native/-/realpath-native-1.0.2.tgz#cd51ce089b513b45cf9b1516c82989b51ccc6560"
+  integrity sha512-+S3zTvVt9yTntFrBpm7TQmQ3tzpCrnA1a/y+3cUHAc9ZR6aIjG0WNLR+Rj79QpJktY+VeW/TQtFlQ1bzsehI8g==
+  dependencies:
+    util.promisify "^1.0.0"
+
+rechoir@^0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/rechoir/-/rechoir-0.6.2.tgz#85204b54dba82d5742e28c96756ef43af50e3384"
+  integrity sha1-hSBLVNuoLVdC4oyWdW70OvUOM4Q=
+  dependencies:
+    resolve "^1.1.6"
+
+regenerate-unicode-properties@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-7.0.0.tgz#107405afcc4a190ec5ed450ecaa00ed0cafa7a4c"
+  integrity sha512-s5NGghCE4itSlUS+0WUj88G6cfMVMmH8boTPNvABf8od+2dhT9WDlWu8n01raQAJZMOK8Ch6jSexaRO7swd6aw==
+  dependencies:
+    regenerate "^1.4.0"
+
+regenerate@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
+  integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
+
+regenerator-runtime@^0.11.0:
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
+  integrity sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==
+
+regenerator-runtime@^0.12.0:
+  version "0.12.1"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
+  integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
+
+regenerator-transform@^0.13.3:
+  version "0.13.3"
+  resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.13.3.tgz#264bd9ff38a8ce24b06e0636496b2c856b57bcbb"
+  integrity sha512-5ipTrZFSq5vU2YoGoww4uaRVAK4wyYC4TSICibbfEPOruUu8FFP7ErV0BjmbIOEpn3O/k9na9UEdYR/3m7N6uA==
+  dependencies:
+    private "^0.1.6"
+
+regex-cache@^0.4.2:
+  version "0.4.4"
+  resolved "https://registry.yarnpkg.com/regex-cache/-/regex-cache-0.4.4.tgz#75bdc58a2a1496cec48a12835bc54c8d562336dd"
+  integrity sha512-nVIZwtCjkC9YgvWkpM55B5rBhBYRZhAaJbgcFYXXsHnbZ9UZI9nnVWYZpBlCqv9ho2eZryPnWrZGsOdPwVWXWQ==
+  dependencies:
+    is-equal-shallow "^0.1.3"
+
+regex-not@^1.0.0, regex-not@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
+  integrity sha512-J6SDjUgDxQj5NusnOtdFxDwN/+HWykR8GELwctJ7mdqhcyy1xEc4SRFHUXvxTp661YaVKAjfRLZ9cCqS6tn32A==
+  dependencies:
+    extend-shallow "^3.0.2"
+    safe-regex "^1.1.0"
+
+regexp.prototype.flags@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/regexp.prototype.flags/-/regexp.prototype.flags-1.2.0.tgz#6b30724e306a27833eeb171b66ac8890ba37e41c"
+  integrity sha512-ztaw4M1VqgMwl9HlPpOuiYgItcHlunW0He2fE6eNfT6E/CF2FtYi9ofOYe4mKntstYk0Fyh/rDRBdS3AnxjlrA==
+  dependencies:
+    define-properties "^1.1.2"
+
+regexpp@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-1.1.0.tgz#0e3516dd0b7904f413d2d4193dce4618c3a689ab"
+  integrity sha512-LOPw8FpgdQF9etWMaAfG/WRthIdXJGYp4mJ2Jgn/2lpkbod9jPn0t9UqN7AxBOKNfzRbYyVfgc7Vk4t/MpnXgw==
+
+regexpu-core@^4.1.3:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-4.2.0.tgz#a3744fa03806cffe146dea4421a3e73bdcc47b1d"
+  integrity sha512-Z835VSnJJ46CNBttalHD/dB+Sj2ezmY6Xp38npwU87peK6mqOzOpV8eYktdkLTEkzzD+JsTcxd84ozd8I14+rw==
+  dependencies:
+    regenerate "^1.4.0"
+    regenerate-unicode-properties "^7.0.0"
+    regjsgen "^0.4.0"
+    regjsparser "^0.3.0"
+    unicode-match-property-ecmascript "^1.0.4"
+    unicode-match-property-value-ecmascript "^1.0.2"
+
+regjsgen@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.4.0.tgz#c1eb4c89a209263f8717c782591523913ede2561"
+  integrity sha512-X51Lte1gCYUdlwhF28+2YMO0U6WeN0GLpgpA7LK7mbdDnkQYiwvEpmpe0F/cv5L14EbxgrdayAG3JETBv0dbXA==
+
+regjsparser@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.3.0.tgz#3c326da7fcfd69fa0d332575a41c8c0cdf588c96"
+  integrity sha512-zza72oZBBHzt64G7DxdqrOo/30bhHkwMUoT0WqfGu98XLd7N+1tsy5MJ96Bk4MD0y74n629RhmrGW6XlnLLwCA==
+  dependencies:
+    jsesc "~0.5.0"
+
+remove-trailing-separator@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz#c24bce2a283adad5bc3f58e0d48249b92379d8ef"
+  integrity sha1-wkvOKig62tW8P1jg1IJJuSN52O8=
+
+repeat-element@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/repeat-element/-/repeat-element-1.1.3.tgz#782e0d825c0c5a3bb39731f84efee6b742e6b1ce"
+  integrity sha512-ahGq0ZnV5m5XtZLMb+vP76kcAM5nkLqk0lpqAuojSKGgQtn4eRi4ZZGm2olo2zKFH+sMsWaqOCW1dqAnOru72g==
+
+repeat-string@^1.5.2, repeat-string@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
+  integrity sha1-jcrkcOHIirwtYA//Sndihtp15jc=
+
+repeating@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
+  integrity sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=
+  dependencies:
+    is-finite "^1.0.0"
+
+request-promise-core@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/request-promise-core/-/request-promise-core-1.1.1.tgz#3eee00b2c5aa83239cfb04c5700da36f81cd08b6"
+  integrity sha1-Pu4AssWqgyOc+wTFcA2jb4HNCLY=
+  dependencies:
+    lodash "^4.13.1"
+
+request-promise-native@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/request-promise-native/-/request-promise-native-1.0.5.tgz#5281770f68e0c9719e5163fd3fab482215f4fda5"
+  integrity sha1-UoF3D2jgyXGeUWP9P6tIIhX0/aU=
+  dependencies:
+    request-promise-core "1.1.1"
+    stealthy-require "^1.1.0"
+    tough-cookie ">=2.3.3"
+
+request@^2.87.0:
+  version "2.88.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
+  integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.8.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.6"
+    extend "~3.0.2"
+    forever-agent "~0.6.1"
+    form-data "~2.3.2"
+    har-validator "~5.1.0"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.19"
+    oauth-sign "~0.9.0"
+    performance-now "^2.1.0"
+    qs "~6.5.2"
+    safe-buffer "^5.1.2"
+    tough-cookie "~2.4.3"
+    tunnel-agent "^0.6.0"
+    uuid "^3.3.2"
+
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha1-jGStX9MNqxyXbiNE/+f3kqam30I=
+
+require-main-filename@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
+  integrity sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=
+
+require-uncached@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/require-uncached/-/require-uncached-1.0.3.tgz#4e0d56d6c9662fd31e43011c4b95aa49955421d3"
+  integrity sha1-Tg1W1slmL9MeQwEcS5WqSZVUIdM=
+  dependencies:
+    caller-path "^0.1.0"
+    resolve-from "^1.0.0"
+
+resolve-cwd@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-cwd/-/resolve-cwd-2.0.0.tgz#00a9f7387556e27038eae232caa372a6a59b665a"
+  integrity sha1-AKn3OHVW4nA46uIyyqNypqWbZlo=
+  dependencies:
+    resolve-from "^3.0.0"
+
+resolve-from@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
+  integrity sha1-Jsv+k10a7uq7Kbw/5a6wHpPUQiY=
+
+resolve-from@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
+  integrity sha1-six699nWiBvItuZTM17rywoYh0g=
+
+resolve-url@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
+  integrity sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=
+
+resolve@1.1.7:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
+  integrity sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=
+
+resolve@^1.1.6, resolve@^1.3.2, resolve@^1.5.0, resolve@^1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.8.1.tgz#82f1ec19a423ac1fbd080b0bab06ba36e84a7a26"
+  integrity sha512-AicPrAC7Qu1JxPCZ9ZgCZlY35QgFnNqc+0LtbRNxnVw4TXvjQ72wnuL9JQcEBgXkI9JM8MsT9kaQoHcpCRJOYA==
+  dependencies:
+    path-parse "^1.0.5"
+
+restore-cursor@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
+  integrity sha1-n37ih/gv0ybU/RYpI9YhKe7g368=
+  dependencies:
+    onetime "^2.0.0"
+    signal-exit "^3.0.2"
+
+ret@~0.1.10:
+  version "0.1.15"
+  resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
+  integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
+
+retry@^0.10.1:
+  version "0.10.1"
+  resolved "https://registry.yarnpkg.com/retry/-/retry-0.10.1.tgz#e76388d217992c252750241d3d3956fed98d8ff4"
+  integrity sha1-52OI0heZLCUnUCQdPTlW/tmNj/Q=
+
+rimraf@^2.2.8, rimraf@^2.5.4, rimraf@^2.6.1:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
+  integrity sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==
+  dependencies:
+    glob "^7.0.5"
+
+rimraf@~2.2.6:
+  version "2.2.8"
+  resolved "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz#e439be2aaee327321952730f99a8929e4fc50582"
+  integrity sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=
+
+rimraf@~2.4.0:
+  version "2.4.5"
+  resolved "http://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz#ee710ce5d93a8fdb856fb5ea8ff0e2d75934b2da"
+  integrity sha1-7nEM5dk6j9uFb7Xqj/Di11k0sto=
+  dependencies:
+    glob "^6.0.1"
+
+rsvp@^3.3.3:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-3.6.2.tgz#2e96491599a96cde1b515d5674a8f7a91452926a"
+  integrity sha512-OfWGQTb9vnwRjwtA2QwpG2ICclHC3pgXZO5xt8H2EfgDquO0qVdSb5T88L4qJVAEugbS56pAuV4XZM58UX8ulw==
+
+run-async@^2.2.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/run-async/-/run-async-2.3.0.tgz#0371ab4ae0bdd720d4166d7dfda64ff7a445a6c0"
+  integrity sha1-A3GrSuC91yDUFm19/aZP96RFpsA=
+  dependencies:
+    is-promise "^2.1.0"
+
+rx-lite-aggregates@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/rx-lite-aggregates/-/rx-lite-aggregates-4.0.8.tgz#753b87a89a11c95467c4ac1626c4efc4e05c67be"
+  integrity sha1-dTuHqJoRyVRnxKwWJsTvxOBcZ74=
+  dependencies:
+    rx-lite "*"
+
+rx-lite@*, rx-lite@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
+  integrity sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=
+
+rxjs@^5.5.2:
+  version "5.5.12"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.12.tgz#6fa61b8a77c3d793dbaf270bee2f43f652d741cc"
+  integrity sha512-xx2itnL5sBbqeeiVgNPVuQQ1nC8Jp2WfNJhXWHmElW9YmrpS9UVnNzhP3EH3HFqexO5Tlp8GhYY+WEcqcVMvGw==
+  dependencies:
+    symbol-observable "1.0.1"
+
+safe-buffer@5.1.2, safe-buffer@^5.0.1, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+safe-json-stringify@~1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/safe-json-stringify/-/safe-json-stringify-1.2.0.tgz#356e44bc98f1f93ce45df14bcd7c01cda86e0afd"
+  integrity sha512-gH8eh2nZudPQO6TytOvbxnuhYBOvDBBLW52tz5q6X58lJcd/tkmqFR+5Z9adS8aJtURSXWThWy/xJtJwixErvg==
+
+safe-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/safe-regex/-/safe-regex-1.1.0.tgz#40a3669f3b077d1e943d44629e157dd48023bf2e"
+  integrity sha1-QKNmnzsHfR6UPURinhV91IAjvy4=
+  dependencies:
+    ret "~0.1.10"
+
+"safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+sane@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/sane/-/sane-3.1.0.tgz#995193b7dc1445ef1fe41ddfca2faf9f111854c6"
+  integrity sha512-G5GClRRxT1cELXfdAq7UKtUsv8q/ZC5k8lQGmjEm4HcAl3HzBy68iglyNCmw4+0tiXPCBZntslHlRhbnsSws+Q==
+  dependencies:
+    anymatch "^2.0.0"
+    capture-exit "^1.2.0"
+    exec-sh "^0.2.0"
+    execa "^1.0.0"
+    fb-watchman "^2.0.0"
+    micromatch "^3.1.4"
+    minimist "^1.1.1"
+    walker "~1.0.5"
+    watch "~0.18.0"
+  optionalDependencies:
+    fsevents "^1.2.3"
+
+sanitize-filename@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/sanitize-filename/-/sanitize-filename-1.6.1.tgz#612da1c96473fa02dccda92dcd5b4ab164a6772a"
+  integrity sha1-YS2hyWRz+gLczaktzVtKsWSmdyo=
+  dependencies:
+    truncate-utf8-bytes "^1.0.0"
+
+sax@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
+  integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
+
+sax@~1.1.1:
+  version "1.1.6"
+  resolved "http://registry.npmjs.org/sax/-/sax-1.1.6.tgz#5d616be8a5e607d54e114afae55b7eaf2fcc3240"
+  integrity sha1-XWFr6KXmB9VOEUr65Vt+ry/MMkA=
+
+scheduler@^0.11.2:
+  version "0.11.3"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.11.3.tgz#b5769b90cf8b1464f3f3cfcafe8e3cd7555a2d6b"
+  integrity sha512-i9X9VRRVZDd3xZw10NY5Z2cVMbdYg6gqFecfj79USv1CFN+YrJ3gIPRKf1qlY+Sxly4djoKdfx1T+m9dnRB8kQ==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+
+"semver@2 || 3 || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1:
+  version "5.5.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.1.tgz#7dfdd8814bdb7cabc7be0fb1d734cfb66c940477"
+  integrity sha512-PqpAxfrEhlSUWge8dwIp4tZnQ25DIOthpiaHNIthsjEFQD6EvqUKUDM7L8O2rShkFccYo1VjJR0coWfNkCubRw==
+
+send@0.16.2:
+  version "0.16.2"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.16.2.tgz#6ecca1e0f8c156d141597559848df64730a6bbc1"
+  integrity sha512-E64YFPUssFHEFBvpbbjr44NCLtI1AohxQ8ZSiJjQLskAdKuriYEP6VyGEsRDH8ScozGpkaX1BGvhanqCwkcEZw==
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.2"
+    destroy "~1.0.4"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.6.2"
+    mime "1.4.1"
+    ms "2.0.0"
+    on-finished "~2.3.0"
+    range-parser "~1.2.0"
+    statuses "~1.4.0"
+
+serialize-error@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/serialize-error/-/serialize-error-2.1.0.tgz#50b679d5635cdf84667bdc8e59af4e5b81d5f60a"
+  integrity sha1-ULZ51WNc34Rme9yOWa9OW4HV9go=
+
+serve-static@^1.13.1:
+  version "1.13.2"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.13.2.tgz#095e8472fd5b46237db50ce486a43f4b86c6cec1"
+  integrity sha512-p/tdJrO4U387R9oMjb1oj7qSMaMfmOyd4j9hOFoxZe2baQszgHcSWjuya/CiT5kgZZKRudHNOA0pYXOl8rQ5nw==
+  dependencies:
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    parseurl "~1.3.2"
+    send "0.16.2"
+
+set-blocking@^2.0.0, set-blocking@~2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
+  integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
+
+set-value@^0.4.3:
+  version "0.4.3"
+  resolved "https://registry.yarnpkg.com/set-value/-/set-value-0.4.3.tgz#7db08f9d3d22dc7f78e53af3c3bf4666ecdfccf1"
+  integrity sha1-fbCPnT0i3H945Trzw79GZuzfzPE=
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-extendable "^0.1.1"
+    is-plain-object "^2.0.1"
+    to-object-path "^0.3.0"
+
+set-value@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-value/-/set-value-2.0.0.tgz#71ae4a88f0feefbbf52d1ea604f3fb315ebb6274"
+  integrity sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-extendable "^0.1.1"
+    is-plain-object "^2.0.3"
+    split-string "^3.0.1"
+
+setimmediate@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
+  integrity sha1-KQy7Iy4waULX1+qbg3Mqt4VvgoU=
+
+setprototypeof@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.0.tgz#d0bd85536887b6fe7c0d818cb962d9d91c54e656"
+  integrity sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==
+
+shebang-command@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
+  integrity sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=
+  dependencies:
+    shebang-regex "^1.0.0"
+
+shebang-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
+  integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
+
+shell-quote@1.6.1, shell-quote@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.6.1.tgz#f4781949cce402697127430ea3b3c5476f481767"
+  integrity sha1-9HgZSczkAmlxJ0MOo7PFR29IF2c=
+  dependencies:
+    array-filter "~0.0.0"
+    array-map "~0.0.0"
+    array-reduce "~0.0.0"
+    jsonify "~0.0.0"
+
+shell-utils@^1.0.9:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/shell-utils/-/shell-utils-1.0.10.tgz#7fe7b8084f5d6d21323d941267013bc38aed063e"
+  integrity sha512-p1xuqhj3jgcXiV8wGoF1eL/NOvapN9tyGDoObqKwvZTUZn7fIzK75swLTEHfGa7sObeN9vxFplHw/zgYUYRTsg==
+  dependencies:
+    lodash "4.x.x"
+
+shelljs@^0.7.8:
+  version "0.7.8"
+  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.7.8.tgz#decbcf874b0d1e5fb72e14b164a9683048e9acb3"
+  integrity sha1-3svPh0sNHl+3LhSxZKloMEjprLM=
+  dependencies:
+    glob "^7.0.0"
+    interpret "^1.0.0"
+    rechoir "^0.6.2"
+
+shellwords@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/shellwords/-/shellwords-0.1.1.tgz#d6b9181c1a48d397324c84871efbcfc73fc0654b"
+  integrity sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==
+
+signal-exit@^3.0.0, signal-exit@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
+  integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
+
+simple-plist@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/simple-plist/-/simple-plist-0.2.1.tgz#71766db352326928cf3a807242ba762322636723"
+  integrity sha1-cXZts1IyaSjPOoByQrp2IyJjZyM=
+  dependencies:
+    bplist-creator "0.0.7"
+    bplist-parser "0.1.1"
+    plist "2.0.1"
+
+sisteransi@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-1.0.0.tgz#77d9622ff909080f1c19e5f4a1df0c1b0a27b88c"
+  integrity sha512-N+z4pHB4AmUv0SjveWRd6q1Nj5w62m5jodv+GD8lvmbY/83T/rpbJGZOnK5T149OldDj4Db07BSv9xY4K6NTPQ==
+
+slash@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
+  integrity sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU=
+
+slash@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-2.0.0.tgz#de552851a1759df3a8f206535442f5ec4ddeab44"
+  integrity sha512-ZYKh3Wh2z1PpEXWr0MpSBZ0V6mZHAQfYevttO11c51CaWjGTaadiKZ+wVt1PbMlDV5qhMFslpZCemhwOK7C89A==
+
+slice-ansi@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-1.0.0.tgz#044f1a49d8842ff307aad6b505ed178bd950134d"
+  integrity sha512-POqxBK6Lb3q6s047D/XsDVNPnF9Dl8JSaqe9h9lURl0OdNqy/ujDrOiIHtsqXMGbWWTIomRzAMaTyawAU//Reg==
+  dependencies:
+    is-fullwidth-code-point "^2.0.0"
+
+slide@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/slide/-/slide-1.1.6.tgz#56eb027d65b4d2dce6cb2e2d32c4d4afc9e1d707"
+  integrity sha1-VusCfWW00tzmyy4tMsTUr8nh1wc=
+
+snapdragon-node@^2.0.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
+  integrity sha512-O27l4xaMYt/RSQ5TR3vpWCAB5Kb/czIcqUFOM/C4fYcLnbZUc1PkjTAMjof2pBWaSTwOUd6qUHcFGVGj7aIwnw==
+  dependencies:
+    define-property "^1.0.0"
+    isobject "^3.0.0"
+    snapdragon-util "^3.0.1"
+
+snapdragon-util@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-util/-/snapdragon-util-3.0.1.tgz#f956479486f2acd79700693f6f7b805e45ab56e2"
+  integrity sha512-mbKkMdQKsjX4BAL4bRYTj21edOf8cN7XHdYUJEe+Zn99hVEYcMvKPct1IqNe7+AZPirn8BCDOQBHQZknqmKlZQ==
+  dependencies:
+    kind-of "^3.2.0"
+
+snapdragon@^0.8.1:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/snapdragon/-/snapdragon-0.8.2.tgz#64922e7c565b0e14204ba1aa7d6964278d25182d"
+  integrity sha512-FtyOnWN/wCHTVXOMwvSv26d+ko5vWlIDD6zoUJ7LW8vh+ZBC8QdljveRP+crNrtBwioEUWy/4dMtbBjA4ioNlg==
+  dependencies:
+    base "^0.11.1"
+    debug "^2.2.0"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    map-cache "^0.2.2"
+    source-map "^0.5.6"
+    source-map-resolve "^0.5.0"
+    use "^3.1.0"
+
+source-map-resolve@^0.5.0:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.2.tgz#72e2cc34095543e43b2c62b2c4c10d4a9054f259"
+  integrity sha512-MjqsvNwyz1s0k81Goz/9vRBe9SZdB09Bdw+/zYyO+3CuPk6fouTaxscHkgtE8jKvf01kVfl8riHzERQ/kefaSA==
+  dependencies:
+    atob "^2.1.1"
+    decode-uri-component "^0.2.0"
+    resolve-url "^0.2.1"
+    source-map-url "^0.4.0"
+    urix "^0.1.0"
+
+source-map-support@^0.4.15:
+  version "0.4.18"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.18.tgz#0286a6de8be42641338594e97ccea75f0a2c585f"
+  integrity sha512-try0/JqxPLF9nOjvSta7tVondkP5dwgyLDjVoyMDlmjugT2lRZ1OfsrYTkCd2hkDnJTKRbO/Rl3orm8vlsUzbA==
+  dependencies:
+    source-map "^0.5.6"
+
+source-map-support@^0.5.6, source-map-support@^0.5.9:
+  version "0.5.9"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
+  integrity sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map-url@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
+  integrity sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=
+
+source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@^0.5.7:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
+
+source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
+spdx-correct@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-3.0.0.tgz#05a5b4d7153a195bc92c3c425b69f3b2a9524c82"
+  integrity sha512-N19o9z5cEyc8yQQPukRCZ9EUmb4HUpnrmaL/fxS2pBo2jbfcFRVuFZ/oFC+vZz0MNNk0h80iMn5/S6qGZOL5+g==
+  dependencies:
+    spdx-expression-parse "^3.0.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-exceptions@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/spdx-exceptions/-/spdx-exceptions-2.1.0.tgz#2c7ae61056c714a5b9b9b2b2af7d311ef5c78fe9"
+  integrity sha512-4K1NsmrlCU1JJgUrtgEeTVyfx8VaYea9J9LvARxhbHtVtohPs/gFGG5yy49beySjlIMhhXZ4QqujIZEfS4l6Cg==
+
+spdx-expression-parse@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz#99e119b7a5da00e05491c9fa338b7904823b41d0"
+  integrity sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==
+  dependencies:
+    spdx-exceptions "^2.1.0"
+    spdx-license-ids "^3.0.0"
+
+spdx-license-ids@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.1.tgz#e2a303236cac54b04031fa7a5a79c7e701df852f"
+  integrity sha512-TfOfPcYGBB5sDuPn3deByxPhmfegAhpDYKSOXZQN81Oyrrif8ZCodOLzK3AesELnCx03kikhyDwh0pfvvQvF8w==
+
+split-string@^3.0.1, split-string@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"
+  integrity sha512-NzNVhJDYpwceVVii8/Hu6DKfD2G+NrQHlS/V/qgv763EYudVwEcMQNxd2lh+0VrUByXN/oJkl5grOhYWvQUYiw==
+  dependencies:
+    extend-shallow "^3.0.0"
+
+sprintf-js@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+  integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
+
+sshpk@^1.7.0:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.14.2.tgz#c6fc61648a3d9c4e764fd3fcdf4ea105e492ba98"
+  integrity sha1-xvxhZIo9nE52T9P8306hBeSSupg=
+  dependencies:
+    asn1 "~0.2.3"
+    assert-plus "^1.0.0"
+    dashdash "^1.12.0"
+    getpass "^0.1.1"
+    safer-buffer "^2.0.2"
+  optionalDependencies:
+    bcrypt-pbkdf "^1.0.0"
+    ecc-jsbn "~0.1.1"
+    jsbn "~0.1.0"
+    tweetnacl "~0.14.0"
+
+stack-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
+  integrity sha1-1PM6tU6OOHeLDKXP07OvsS22hiA=
+
+stacktrace-parser@^0.1.3:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/stacktrace-parser/-/stacktrace-parser-0.1.4.tgz#01397922e5f62ecf30845522c95c4fe1d25e7d4e"
+  integrity sha1-ATl5IuX2Ls8whFUiyVxP4dJefU4=
+
+static-extend@^0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
+  integrity sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=
+  dependencies:
+    define-property "^0.2.5"
+    object-copy "^0.1.0"
+
+"statuses@>= 1.4.0 < 2":
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
+  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
+
+statuses@~1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
+  integrity sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4=
+
+statuses@~1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.4.0.tgz#bb73d446da2796106efcc1b601a253d6c46bd087"
+  integrity sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew==
+
+stealthy-require@^1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/stealthy-require/-/stealthy-require-1.1.1.tgz#35b09875b4ff49f26a777e509b3090a3226bf24b"
+  integrity sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks=
+
+stream-buffers@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/stream-buffers/-/stream-buffers-2.2.0.tgz#91d5f5130d1cef96dcfa7f726945188741d09ee4"
+  integrity sha1-kdX1Ew0c75bc+n9yaUUYh0HQnuQ=
+
+string-length@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/string-length/-/string-length-2.0.0.tgz#d40dbb686a3ace960c1cffca562bf2c45f8363ed"
+  integrity sha1-1A27aGo6zpYMHP/KVivyxF+DY+0=
+  dependencies:
+    astral-regex "^1.0.0"
+    strip-ansi "^4.0.0"
+
+string-width@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
+  integrity sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=
+  dependencies:
+    code-point-at "^1.0.0"
+    is-fullwidth-code-point "^1.0.0"
+    strip-ansi "^3.0.0"
+
+"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.0, string-width@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
+  integrity sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==
+  dependencies:
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^4.0.0"
+
+string.prototype.matchall@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/string.prototype.matchall/-/string.prototype.matchall-2.0.0.tgz#2af8fe3d2d6dc53ca2a59bd376b089c3c152b3c8"
+  integrity sha512-WoZ+B2ypng1dp4iFLF2kmZlwwlE19gmjgKuhL1FJfDgCREWb3ye3SDVHSzLH6bxfnvYmkCxbzkmWcQZHA4P//Q==
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.10.0"
+    function-bind "^1.1.1"
+    has-symbols "^1.0.0"
+    regexp.prototype.flags "^1.2.0"
+
+string_decoder@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
+  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
+  dependencies:
+    safe-buffer "~5.1.0"
+
+strip-ansi@^3.0.0, strip-ansi@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
+  dependencies:
+    ansi-regex "^2.0.0"
+
+strip-ansi@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
+  integrity sha1-qEeQIusaw2iocTibY1JixQXuNo8=
+  dependencies:
+    ansi-regex "^3.0.0"
+
+strip-ansi@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.0.0.tgz#f78f68b5d0866c20b2c9b8c61b5298508dc8756f"
+  integrity sha512-Uu7gQyZI7J7gn5qLn1Np3G9vcYGTVqB+lFTytnDJv83dd8T22aGH451P3jueT2/QemInJDfxHB5Tde5OzgG1Ow==
+  dependencies:
+    ansi-regex "^4.0.0"
+
+strip-bom@3.0.0, strip-bom@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
+  integrity sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=
+
+strip-bom@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-2.0.0.tgz#6219a85616520491f35788bdbf1447a99c7e6b0e"
+  integrity sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=
+  dependencies:
+    is-utf8 "^0.2.0"
+
+strip-eof@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
+  integrity sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=
+
+strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
+  integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
+
+supports-color@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
+  integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
+
+supports-color@^3.1.2:
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-3.2.3.tgz#65ac0504b3954171d8a64946b2ae3cbb8a5f54f6"
+  integrity sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=
+  dependencies:
+    has-flag "^1.0.0"
+
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
+symbol-observable@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
+  integrity sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=
+
+symbol-tree@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
+  integrity sha1-rifbOPZgp64uHDt9G8KQgZuFGeY=
+
+table@^4.0.3:
+  version "4.0.3"
+  resolved "http://registry.npmjs.org/table/-/table-4.0.3.tgz#00b5e2b602f1794b9acaf9ca908a76386a7813bc"
+  integrity sha512-S7rnFITmBH1EnyKcvxBh1LjYeQMmnZtCXSEbHcH6S0NoKit24ZuFO/T1vDcLdYsLQkM188PVVhQmzKIuThNkKg==
+  dependencies:
+    ajv "^6.0.1"
+    ajv-keywords "^3.0.0"
+    chalk "^2.1.0"
+    lodash "^4.17.4"
+    slice-ansi "1.0.0"
+    string-width "^2.1.1"
+
+tail@^1.2.3:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/tail/-/tail-1.4.0.tgz#884b216220b90804bfe87a4c8174c2efed0e2661"
+  integrity sha512-wjwfZw6wcMFTB1Po7NFUf4TdCDwX8duZjdTMhnHBEC677Q6mFRcVZE7f/nZDhG2Fpf/wEEKOJP9L7/b11/vlHQ==
+
+tar@^4:
+  version "4.4.6"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.6.tgz#63110f09c00b4e60ac8bcfe1bf3c8660235fbc9b"
+  integrity sha512-tMkTnh9EdzxyfW+6GK6fCahagXsnYk6kE6S9Gr9pjVdys769+laCTbodXDhPAjzVtEBazRgP0gYqOjnk9dQzLg==
+  dependencies:
+    chownr "^1.0.1"
+    fs-minipass "^1.2.5"
+    minipass "^2.3.3"
+    minizlib "^1.1.0"
+    mkdirp "^0.5.0"
+    safe-buffer "^5.1.2"
+    yallist "^3.0.2"
+
+telnet-client@0.15.3:
+  version "0.15.3"
+  resolved "https://registry.yarnpkg.com/telnet-client/-/telnet-client-0.15.3.tgz#99ec754e4acf6fa51dc69898f574df3c2550712e"
+  integrity sha512-GSfdzQV0BKIYsmeXq7bJFJ2wHeJud6icaIxCUf6QCGQUD6R0BBGbT1+yLDhq67JRdgRpwyPwUbV7JxFeRrZomQ==
+  dependencies:
+    bluebird "3.5.x"
+
+temp-dir@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/temp-dir/-/temp-dir-1.0.0.tgz#0a7c0ea26d3a39afa7e0ebea9c1fc0bc4daa011d"
+  integrity sha1-CnwOom06Oa+n4OvqnB/AvE2qAR0=
+
+temp@0.8.3:
+  version "0.8.3"
+  resolved "https://registry.yarnpkg.com/temp/-/temp-0.8.3.tgz#e0c6bc4d26b903124410e4fed81103014dfc1f59"
+  integrity sha1-4Ma8TSa5AxJEEOT+2BEDAU38H1k=
+  dependencies:
+    os-tmpdir "^1.0.0"
+    rimraf "~2.2.6"
+
+tempfile@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/tempfile/-/tempfile-2.0.0.tgz#6b0446856a9b1114d1856ffcbe509cccb0977265"
+  integrity sha1-awRGhWqbERTRhW/8vlCczLCXcmU=
+  dependencies:
+    temp-dir "^1.0.0"
+    uuid "^3.0.1"
+
+test-exclude@^4.2.1:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.2.3.tgz#a9a5e64474e4398339245a0a769ad7c2f4a97c20"
+  integrity sha512-SYbXgY64PT+4GAL2ocI3HwPa4Q4TBKm0cwAVeKOt/Aoc0gSpNRjJX8w0pA1LMKZ3LBmd8pYBqApFNQLII9kavA==
+  dependencies:
+    arrify "^1.0.1"
+    micromatch "^2.3.11"
+    object-assign "^4.1.0"
+    read-pkg-up "^1.0.1"
+    require-main-filename "^1.0.1"
+
+text-table@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
+  integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
+
+throat@^4.0.0, throat@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/throat/-/throat-4.1.0.tgz#89037cbc92c56ab18926e6ba4cbb200e15672a6a"
+  integrity sha1-iQN8vJLFarGJJua6TLsgDhVnKmo=
+
+through2@^2.0.0:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/through2/-/through2-2.0.3.tgz#0004569b37c7c74ba39c43f3ced78d1ad94140be"
+  integrity sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=
+  dependencies:
+    readable-stream "^2.1.5"
+    xtend "~4.0.1"
+
+through@^2.3.6:
+  version "2.3.8"
+  resolved "http://registry.npmjs.org/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
+  integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
+
+time-stamp@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/time-stamp/-/time-stamp-1.1.0.tgz#764a5a11af50561921b133f3b44e618687e0f5c3"
+  integrity sha1-dkpaEa9QVhkhsTPztE5hhofg9cM=
+
+tmp@^0.0.33:
+  version "0.0.33"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
+  integrity sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==
+  dependencies:
+    os-tmpdir "~1.0.2"
+
+tmpl@1.0.x:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
+  integrity sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=
+
+to-fast-properties@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
+  integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=
+
+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+  integrity sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=
+
+to-object-path@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"
+  integrity sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=
+  dependencies:
+    kind-of "^3.0.2"
+
+to-regex-range@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-2.1.1.tgz#7c80c17b9dfebe599e27367e0d4dd5590141db38"
+  integrity sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=
+  dependencies:
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+
+to-regex@^3.0.1, to-regex@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/to-regex/-/to-regex-3.0.2.tgz#13cfdd9b336552f30b51f33a8ae1b42a7a7599ce"
+  integrity sha512-FWtleNAtZ/Ki2qtqej2CXTOayOH9bHDQF+Q48VpWyDXjbYxA4Yz8iDB31zXOBUlOHHKidDbqGVrTUvQMPmBGBw==
+  dependencies:
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    regex-not "^1.0.2"
+    safe-regex "^1.1.0"
+
+tough-cookie@>=2.3.3, tough-cookie@^2.3.4, tough-cookie@~2.4.3:
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.4.3.tgz#53f36da3f47783b0925afa06ff9f3b165280f781"
+  integrity sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==
+  dependencies:
+    psl "^1.1.24"
+    punycode "^1.4.1"
+
+tr46@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
+  integrity sha1-qLE/1r/SSJUZZ0zN5VujaTtwbQk=
+  dependencies:
+    punycode "^2.1.0"
+
+trim-right@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
+  integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
+
+truncate-utf8-bytes@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/truncate-utf8-bytes/-/truncate-utf8-bytes-1.0.2.tgz#405923909592d56f78a5818434b0b78489ca5f2b"
+  integrity sha1-QFkjkJWS1W94pYGENLC3hInKXys=
+  dependencies:
+    utf8-byte-length "^1.0.1"
+
+tunnel-agent@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
+  integrity sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=
+  dependencies:
+    safe-buffer "^5.0.1"
+
+tweetnacl@^0.14.3, tweetnacl@~0.14.0:
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
+  integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
+
+type-check@~0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
+  integrity sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=
+  dependencies:
+    prelude-ls "~1.1.2"
+
+typedarray@^0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
+  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
+
+ua-parser-js@^0.7.18:
+  version "0.7.18"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.18.tgz#a7bfd92f56edfb117083b69e31d2aa8882d4b1ed"
+  integrity sha512-LtzwHlVHwFGTptfNSgezHp7WUlwiqb0gA9AALRbKaERfxwJoiX0A73QbTToxteIAuIaFshhgIZfqK8s7clqgnA==
+
+uglify-es@^3.1.9:
+  version "3.3.9"
+  resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.3.9.tgz#0c1c4f0700bed8dbc124cdb304d2592ca203e677"
+  integrity sha512-r+MU0rfv4L/0eeW3xZrd16t4NZfK8Ld4SWVglYBb7ez5uXFWHuVRs6xCTrf1yirs9a4j4Y27nn7SRfO6v67XsQ==
+  dependencies:
+    commander "~2.13.0"
+    source-map "~0.6.1"
+
+uglify-js@^3.1.4:
+  version "3.4.9"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.9.tgz#af02f180c1207d76432e473ed24a28f4a782bae3"
+  integrity sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==
+  dependencies:
+    commander "~2.17.1"
+    source-map "~0.6.1"
+
+ultron@1.0.x:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.0.2.tgz#ace116ab557cd197386a4e88f4685378c8b2e4fa"
+  integrity sha1-rOEWq1V80Zc4ak6I9GhTeMiy5Po=
+
+ultron@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.1.tgz#9fe1536a10a664a65266a1e3ccf85fd36302bc9c"
+  integrity sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og==
+
+unicode-canonical-property-names-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz#2619800c4c825800efdd8343af7dd9933cbe2818"
+  integrity sha512-jDrNnXWHd4oHiTZnx/ZG7gtUTVp+gCcTTKr8L0HjlwphROEW3+Him+IpvC+xcJEFegapiMZyZe02CyuOnRmbnQ==
+
+unicode-match-property-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz#8ed2a32569961bce9227d09cd3ffbb8fed5f020c"
+  integrity sha512-L4Qoh15vTfntsn4P1zqnHulG0LdXgjSO035fEpdtp6YxXhMT51Q6vgM5lYdG/5X3MjS+k/Y9Xw4SFCY9IkR0rg==
+  dependencies:
+    unicode-canonical-property-names-ecmascript "^1.0.4"
+    unicode-property-aliases-ecmascript "^1.0.4"
+
+unicode-match-property-value-ecmascript@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.0.2.tgz#9f1dc76926d6ccf452310564fd834ace059663d4"
+  integrity sha512-Rx7yODZC1L/T8XKo/2kNzVAQaRE88AaMvI1EF/Xnj3GW2wzN6fop9DDWuFAKUVFH7vozkz26DzP0qyWLKLIVPQ==
+
+unicode-property-aliases-ecmascript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.4.tgz#5a533f31b4317ea76f17d807fa0d116546111dd0"
+  integrity sha512-2WSLa6OdYd2ng8oqiGIWnJqyFArvhn+5vgx5GTxMbUYjCYKUcuKS62YLFF0R/BDGlB1yzXjQOLtPAfHsgirEpg==
+
+union-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"
+  integrity sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=
+  dependencies:
+    arr-union "^3.1.0"
+    get-value "^2.0.6"
+    is-extendable "^0.1.1"
+    set-value "^0.4.3"
+
+universalify@^0.1.0:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+  integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
+
+unpipe@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
+  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=
+
+unset-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
+  integrity sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=
+  dependencies:
+    has-value "^0.3.1"
+    isobject "^3.0.0"
+
+uri-js@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
+  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
+  dependencies:
+    punycode "^2.1.0"
+
+urix@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
+  integrity sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=
+
+use@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
+  integrity sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==
+
+utf8-byte-length@^1.0.1:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/utf8-byte-length/-/utf8-byte-length-1.0.4.tgz#f45f150c4c66eee968186505ab93fcbb8ad6bf61"
+  integrity sha1-9F8VDExm7uloGGUFq5P8u4rWv2E=
+
+util-deprecate@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
+util.promisify@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/util.promisify/-/util.promisify-1.0.0.tgz#440f7165a459c9a16dc145eb8e72f35687097030"
+  integrity sha512-i+6qA2MPhvoKLuxnJNpXAGhg7HphQOSUq2LKMZD0m15EiskXUkMvKdF4Uui0WYeCUGea+o2cw/ZuwehtfsrNkA==
+  dependencies:
+    define-properties "^1.1.2"
+    object.getownpropertydescriptors "^2.0.3"
+
+utils-merge@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
+  integrity sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=
+
+uuid@3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.0.1.tgz#6544bba2dfda8c1cf17e629a3a305e2bb1fee6c1"
+  integrity sha1-ZUS7ot/ajBzxfmKaOjBeK7H+5sE=
+
+uuid@^3.0.1, uuid@^3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
+  integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
+
+validate-npm-package-license@^3.0.1:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
+  integrity sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==
+  dependencies:
+    spdx-correct "^3.0.0"
+    spdx-expression-parse "^3.0.0"
+
+vary@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
+  integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=
+
+verror@1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
+  integrity sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=
+  dependencies:
+    assert-plus "^1.0.0"
+    core-util-is "1.0.2"
+    extsprintf "^1.2.0"
+
+w3c-hr-time@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz#82ac2bff63d950ea9e3189a58a65625fedf19045"
+  integrity sha1-gqwr/2PZUOqeMYmlimViX+3xkEU=
+  dependencies:
+    browser-process-hrtime "^0.1.2"
+
+walker@~1.0.5:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"
+  integrity sha1-L3+bj9ENZ3JisYqITijRlhjgKPs=
+  dependencies:
+    makeerror "1.0.x"
+
+watch@~0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/watch/-/watch-0.18.0.tgz#28095476c6df7c90c963138990c0a5423eb4b986"
+  integrity sha1-KAlUdsbffJDJYxOJkMClQj60uYY=
+  dependencies:
+    exec-sh "^0.2.0"
+    minimist "^1.2.0"
+
+webidl-conversions@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
+  integrity sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==
+
+whatwg-encoding@^1.0.1, whatwg-encoding@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-1.0.4.tgz#63fb016b7435b795d9025632c086a5209dbd2621"
+  integrity sha512-vM9KWN6MP2mIHZ86ytcyIv7e8Cj3KTfO2nd2c8PFDqcI4bxFmQp83ibq4wadq7rL9l9sZV6o9B0LTt8ygGAAXg==
+  dependencies:
+    iconv-lite "0.4.23"
+
+whatwg-fetch@>=0.10.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz#fc804e458cc460009b1a2b966bc8817d2578aefb"
+  integrity sha512-9GSJUgz1D4MfyKU7KRqwOjXCXTqWdFNvEr7eUBYchQiVc744mqK/MzXPNR2WsPkmkOa4ywfg8C2n8h+13Bey1Q==
+
+whatwg-mimetype@^2.1.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.2.0.tgz#a3d58ef10b76009b042d03e25591ece89b88d171"
+  integrity sha512-5YSO1nMd5D1hY3WzAQV3PzZL83W3YeyR1yW9PcH26Weh1t+Vzh9B6XkDh7aXm83HBZ4nSMvkjvN2H2ySWIvBgw==
+
+whatwg-url@^6.4.1:
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.5.0.tgz#f2df02bff176fd65070df74ad5ccbb5a199965a8"
+  integrity sha512-rhRZRqx/TLJQWUpQ6bmrt2UV4f0HCQ463yQuONJqC6fO2VoEb1pTYddbe59SkYq87aoM5A3bdhMZiUiVws+fzQ==
+  dependencies:
+    lodash.sortby "^4.7.0"
+    tr46 "^1.0.1"
+    webidl-conversions "^4.0.2"
+
+whatwg-url@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-7.0.0.tgz#fde926fa54a599f3adf82dff25a9f7be02dc6edd"
+  integrity sha512-37GeVSIJ3kn1JgKyjiYNmSLP1yzbpb29jdmwBSgkD9h40/hyrR/OifpVUndji3tmwGgD8qpw7iQu3RSbCrBpsQ==
+  dependencies:
+    lodash.sortby "^4.7.0"
+    tr46 "^1.0.1"
+    webidl-conversions "^4.0.2"
+
+which-module@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
+  integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
+
+which@^1.2.12, which@^1.2.9, which@^1.3.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
+  integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==
+  dependencies:
+    isexe "^2.0.0"
+
+wide-align@^1.1.0:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
+  integrity sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==
+  dependencies:
+    string-width "^1.0.2 || 2"
+
+wordwrap@^1.0.0, wordwrap@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
+  integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
+
+wordwrap@~0.0.2:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
+  integrity sha1-o9XabNXAvAAI03I0u68b7WMFkQc=
+
+wrap-ansi@^2.0.0:
+  version "2.1.0"
+  resolved "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
+  integrity sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=
+  dependencies:
+    string-width "^1.0.1"
+    strip-ansi "^3.0.1"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+write-file-atomic@^1.2.0:
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-1.3.4.tgz#f807a4f0b1d9e913ae7a48112e6cc3af1991b45f"
+  integrity sha1-+Aek8LHZ6ROuekgRLmzDrxmRtF8=
+  dependencies:
+    graceful-fs "^4.1.11"
+    imurmurhash "^0.1.4"
+    slide "^1.1.5"
+
+write-file-atomic@^2.1.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-2.3.0.tgz#1ff61575c2e2a4e8e510d6fa4e243cce183999ab"
+  integrity sha512-xuPeK4OdjWqtfi59ylvVL0Yn35SF3zgcAcv7rBPFHVaEapaDr4GdGgm3j7ckTwH9wHL7fGmgfAnb0+THrHb8tA==
+  dependencies:
+    graceful-fs "^4.1.11"
+    imurmurhash "^0.1.4"
+    signal-exit "^3.0.2"
+
+write@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
+  integrity sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=
+  dependencies:
+    mkdirp "^0.5.1"
+
+ws@^1.1.0, ws@^1.1.1, ws@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.5.tgz#cbd9e6e75e09fc5d2c90015f21f0c40875e0dd51"
+  integrity sha512-o3KqipXNUdS7wpQzBHSe180lBGO60SoK0yVo3CYJgb2MkobuWuBX6dhkYP5ORCLd55y+SaflMOV5fqAB53ux4w==
+  dependencies:
+    options ">=0.0.5"
+    ultron "1.0.x"
+
+ws@^3.3.1:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-3.3.3.tgz#f1cf84fe2d5e901ebce94efaece785f187a228f2"
+  integrity sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==
+  dependencies:
+    async-limiter "~1.0.0"
+    safe-buffer "~5.1.0"
+    ultron "~1.1.0"
+
+ws@^5.2.0:
+  version "5.2.2"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-5.2.2.tgz#dffef14866b8e8dc9133582514d1befaf96e980f"
+  integrity sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==
+  dependencies:
+    async-limiter "~1.0.0"
+
+xcode@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/xcode/-/xcode-1.0.0.tgz#e1f5b1443245ded38c180796df1a10fdeda084ec"
+  integrity sha1-4fWxRDJF3tOMGAeW3xoQ/e2ghOw=
+  dependencies:
+    pegjs "^0.10.0"
+    simple-plist "^0.2.1"
+    uuid "3.0.1"
+
+xml-name-validator@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
+  integrity sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==
+
+xml@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/xml/-/xml-1.0.1.tgz#78ba72020029c5bc87b8a81a3cfcd74b4a2fc1e5"
+  integrity sha1-eLpyAgApxbyHuKgaPPzXS0ovweU=
+
+xmlbuilder@8.2.2:
+  version "8.2.2"
+  resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-8.2.2.tgz#69248673410b4ba42e1a6136551d2922335aa773"
+  integrity sha1-aSSGc0ELS6QuGmE2VR0pIjNap3M=
+
+xmlbuilder@^9.0.7:
+  version "9.0.7"
+  resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-9.0.7.tgz#132ee63d2ec5565c557e20f4c22df9aca686b10d"
+  integrity sha1-Ey7mPS7FVlxVfiD0wi35rKaGsQ0=
+
+xmldoc@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/xmldoc/-/xmldoc-0.4.0.tgz#d257224be8393eaacbf837ef227fd8ec25b36888"
+  integrity sha1-0lciS+g5PqrL+DfvIn/Y7CWzaIg=
+  dependencies:
+    sax "~1.1.1"
+
+xmldom@0.1.x:
+  version "0.1.27"
+  resolved "https://registry.yarnpkg.com/xmldom/-/xmldom-0.1.27.tgz#d501f97b3bdb403af8ef9ecc20573187aadac0e9"
+  integrity sha1-1QH5ezvbQDr4757MIFcxh6rawOk=
+
+xpipe@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/xpipe/-/xpipe-1.0.5.tgz#8dd8bf45fc3f7f55f0e054b878f43a62614dafdf"
+  integrity sha1-jdi/Rfw/f1Xw4FS4ePQ6YmFNr98=
+
+xregexp@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/xregexp/-/xregexp-4.0.0.tgz#e698189de49dd2a18cc5687b05e17c8e43943020"
+  integrity sha512-PHyM+sQouu7xspQQwELlGwwd05mXUFqwFYfqPO0cC7x4fxyHnnuetmQr6CjJiafIDoH4MogHb9dOoJzR/Y4rFg==
+
+xtend@~4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
+  integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=
+
+y18n@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
+  integrity sha1-bRX7qITAhnnA136I53WegR4H+kE=
+
+"y18n@^3.2.1 || ^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
+  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+
+yallist@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
+  integrity sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=
+
+yallist@^3.0.0, yallist@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.2.tgz#8452b4bb7e83c7c188d8041c1a837c773d6d8bb9"
+  integrity sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=
+
+yargs-parser@^10.1.0:
+  version "10.1.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-10.1.0.tgz#7202265b89f7e9e9f2e5765e0fe735a905edbaa8"
+  integrity sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs-parser@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-7.0.0.tgz#8d0ac42f16ea55debd332caf4c4038b3e3f5dfd9"
+  integrity sha1-jQrELxbqVd69MyyvTEA4s+P139k=
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs@^12.0.2:
+  version "12.0.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-12.0.2.tgz#fe58234369392af33ecbef53819171eff0f5aadc"
+  integrity sha512-e7SkEx6N6SIZ5c5H22RTZae61qtn3PYUE8JYbBFlK9sYmh3DMQ6E5ygtaG/2BW0JZi4WGgTR2IV5ChqlqrDGVQ==
+  dependencies:
+    cliui "^4.0.0"
+    decamelize "^2.0.0"
+    find-up "^3.0.0"
+    get-caller-file "^1.0.1"
+    os-locale "^3.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1 || ^4.0.0"
+    yargs-parser "^10.1.0"
+
+yargs@^9.0.0:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-9.0.1.tgz#52acc23feecac34042078ee78c0c007f5085db4c"
+  integrity sha1-UqzCP+7Kw0BCB47njAwAf1CF20w=
+  dependencies:
+    camelcase "^4.1.0"
+    cliui "^3.2.0"
+    decamelize "^1.1.1"
+    get-caller-file "^1.0.1"
+    os-locale "^2.0.0"
+    read-pkg-up "^2.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^7.0.0"